diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-26 09:31:09 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-26 09:31:09 -0800 |
| commit | ed5dc2372dba46e0ecd08791b1a0399d313e5cff (patch) | |
| tree | 571319985b59a2963fb7580c24ee2aa1696359e2 | |
| parent | 0512c04a2b5d29a33d96d315e1d14c55f5148aa7 (diff) | |
| parent | 0e786102949d7461859c6ce9f39c2c8d28e42db3 (diff) | |
| download | lwn-ed5dc2372dba46e0ecd08791b1a0399d313e5cff.tar.gz lwn-ed5dc2372dba46e0ecd08791b1a0399d313e5cff.zip | |
Merge tag 'mmc-updates-for-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Pull MMC update from Chris Ball:
"MMC highlights for 3.9:
Core:
- Support for packed commands in eMMC 4.5. (This requires a host
capability to be turned on. It increases write throughput by 20%+,
but may also increase average write latency; more testing needed.)
- Add DT bindings for capability flags.
- Add mmc_of_parse() for shared DT parsing between drivers.
Drivers:
- android-goldfish: New MMC driver for the Android Goldfish emulator.
- mvsdio: Add DT bindings, pinctrl, use slot-gpio for card detection.
- omap_hsmmc: Fix boot hangs with RPMB partitions.
- sdhci-bcm2835: New driver for controller used by Raspberry Pi.
- sdhci-esdhc-imx: Add 8-bit data, auto CMD23 support, use slot-gpio.
- sh_mmcif: Add support for eMMC DDR, bundled MMCIF IRQs.
- tmio_mmc: Add DT bindings, support for vccq regulator"
* tag 'mmc-updates-for-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (92 commits)
mmc: tegra: assume CONFIG_OF, remove platform data
mmc: add DT bindings for more MMC capability flags
mmc: tmio: add support for the VccQ regulator
mmc: tmio: remove unused and deprecated symbols
mmc: sh_mobile_sdhi: use managed resource allocations
mmc: sh_mobile_sdhi: remove unused .pdata field
mmc: tmio-mmc: parse device-tree bindings
mmc: tmio-mmc: define device-tree bindings
mmc: sh_mmcif: use mmc_of_parse() to parse standard MMC DT bindings
mmc: (cosmetic) remove "extern" from function declarations
mmc: provide a standard MMC device-tree binding parser centrally
mmc: detailed definition of CD and WP MMC line polarities in DT
mmc: sdhi, tmio: only check flags in tmio-mmc driver proper
mmc: sdhci: Fix parameter of sdhci_do_start_signal_voltage_switch()
mmc: sdhci: check voltage range only on regulators aware of voltage value
mmc: bcm2835: set SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK
mmc: support packed write command for eMMC4.5 devices
mmc: add packed command feature of eMMC4.5
mmc: rtsx: remove driving adjustment
mmc: use regulator_can_change_voltage() instead of regulator_count_voltages
...
53 files changed, 3064 insertions, 882 deletions
diff --git a/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt new file mode 100644 index 000000000000..59476fbdbfa1 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt @@ -0,0 +1,18 @@ +Broadcom BCM2835 SDHCI controller + +This file documents differences between the core properties described +by mmc.txt and the properties that represent the BCM2835 controller. + +Required properties: +- compatible : Should be "brcm,bcm2835-sdhci". +- clocks : The clock feeding the SDHCI controller. + +Example: + +sdhci: sdhci { + compatible = "brcm,bcm2835-sdhci"; + reg = <0x7e300000 0x100>; + interrupts = <2 30>; + clocks = <&clk_mmc>; + bus-width = <4>; +}; diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index a591c6741d75..85aada2263d5 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -6,23 +6,45 @@ Interpreted by the OF core: - reg: Registers location and length. - interrupts: Interrupts used by the MMC controller. -Required properties: -- bus-width: Number of data lines, can be <1>, <4>, or <8> - Card detection: -If no property below is supplied, standard SDHCI card detect is used. +If no property below is supplied, host native card detect is used. Only one of the properties in this section should be supplied: - broken-cd: There is no card detection available; polling must be used. - cd-gpios: Specify GPIOs for card detection, see gpio binding - non-removable: non-removable slot (like eMMC); assume always present. Optional properties: +- bus-width: Number of data lines, can be <1>, <4>, or <8>. The default + will be <1> if the property is absent. - wp-gpios: Specify GPIOs for write protection, see gpio binding -- cd-inverted: when present, polarity on the cd gpio line is inverted -- wp-inverted: when present, polarity on the wp gpio line is inverted +- cd-inverted: when present, polarity on the CD line is inverted. See the note + below for the case, when a GPIO is used for the CD line +- wp-inverted: when present, polarity on the WP line is inverted. See the note + below for the case, when a GPIO is used for the WP line - max-frequency: maximum operating clock frequency - no-1-8-v: when present, denotes that 1.8v card voltage is not supported on this system, even if the controller claims it is. +- cap-sd-highspeed: SD high-speed timing is supported +- cap-mmc-highspeed: MMC high-speed timing is supported +- cap-power-off-card: powering off the card is safe +- cap-sdio-irq: enable SDIO IRQ signalling on this interface + +*NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line +polarity properties, we have to fix the meaning of the "normal" and "inverted" +line levels. We choose to follow the SDHCI standard, which specifies both those +lines as "active low." Therefore, using the "cd-inverted" property means, that +the CD line is active high, i.e. it is high, when a card is inserted. Similar +logic applies to the "wp-inverted" property. + +CD and WP lines can be implemented on the hardware in one of two ways: as GPIOs, +specified in cd-gpios and wp-gpios properties, or as dedicated pins. Polarity of +dedicated pins can be specified, using *-inverted properties. GPIO polarity can +also be specified using the OF_GPIO_ACTIVE_LOW flag. This creates an ambiguity +in the latter case. We choose to use the XOR logic for GPIO CD and WP lines. +This means, the two properties are "superimposed," for example leaving the +OF_GPIO_ACTIVE_LOW flag clear and specifying the respective *-inverted +property results in a double-inversion and actually means the "normal" line +polarity is in effect. Optional SDIO properties: - keep-power-in-suspend: Preserves card power during a suspend/resume cycle diff --git a/Documentation/devicetree/bindings/mmc/orion-sdio.txt b/Documentation/devicetree/bindings/mmc/orion-sdio.txt new file mode 100644 index 000000000000..84f0ebd67a13 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/orion-sdio.txt @@ -0,0 +1,17 @@ +* Marvell orion-sdio controller + +This file documents differences between the core properties in mmc.txt +and the properties used by the orion-sdio driver. + +- compatible: Should be "marvell,orion-sdio" +- clocks: reference to the clock of the SDIO interface + +Example: + + mvsdio@d00d4000 { + compatible = "marvell,orion-sdio"; + reg = <0xd00d4000 0x200>; + interrupts = <54>; + clocks = <&gateclk 17>; + status = "disabled"; + }; diff --git a/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt index 06cd32d08052..726fd2122a13 100644 --- a/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt +++ b/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt @@ -26,8 +26,16 @@ Required Properties: * bus-width: as documented in mmc core bindings. * wp-gpios: specifies the write protect gpio line. The format of the - gpio specifier depends on the gpio controller. If the write-protect - line is not available, this property is optional. + gpio specifier depends on the gpio controller. If a GPIO is not used + for write-protect, this property is optional. + + * disable-wp: If the wp-gpios property isn't present then (by default) + we'd assume that the write protect is hooked up directly to the + controller's special purpose write protect line (accessible via + the WRTPRT register). However, it's possible that we simply don't + want write protect. In that case specify 'disable-wp'. + NOTE: This property is not required for slots known to always + connect to eMMC or SDIO cards. Optional properties: diff --git a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt new file mode 100644 index 000000000000..df204e18e030 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt @@ -0,0 +1,20 @@ +* Toshiba Mobile IO SD/MMC controller + +The tmio-mmc driver doesn't probe its devices actively, instead its binding to +devices is managed by either MFD drivers or by the sh_mobile_sdhi platform +driver. Those drivers supply the tmio-mmc driver with platform data, that either +describe hardware capabilities, known to them, or are obtained by them from +their own platform data or from their DT information. In the latter case all +compulsory and any optional properties, common to all SD/MMC drivers, as +described in mmc.txt, can be used. Additionally the following tmio_mmc-specific +optional bindings can be used. + +Optional properties: +- toshiba,mmc-wrprotect-disable: write-protect detection is unavailable + +When used with Renesas SDHI hardware, the following compatibility strings +configure various model-specific properties: + +"renesas,sh7372-sdhi": (default) compatible with SH7372 +"renesas,r8a7740-sdhi": compatible with R8A7740: certain MMC/SD commands have to + wait for the interface to become idle. diff --git a/MAINTAINERS b/MAINTAINERS index 870ba56207d7..ec9b7d2aa6ab 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5692,7 +5692,7 @@ S: Maintained F: drivers/mmc/host/omap.c OMAP HS MMC SUPPORT -M: Venkatraman S <svenkatr@ti.com> +M: Balaji T K <balajitk@ti.com> L: linux-mmc@vger.kernel.org L: linux-omap@vger.kernel.org S: Maintained @@ -6804,6 +6804,14 @@ F: include/linux/dw_dmac.h F: drivers/dma/dw_dmac_regs.h F: drivers/dma/dw_dmac.c +SYNOPSYS DESIGNWARE MMC/SD/SDIO DRIVER +M: Seungwon Jeon <tgih.jun@samsung.com> +M: Jaehoon Chung <jh80.chung@samsung.com> +L: linux-mmc@vger.kernel.org +S: Maintained +F: include/linux/mmc/dw_mmc.h +F: drivers/mmc/host/dw_mmc* + TIMEKEEPING, NTP M: John Stultz <john.stultz@linaro.org> M: Thomas Gleixner <tglx@linutronix.de> diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts index 4db9db0a8443..1b8d4106d338 100644 --- a/arch/arm/boot/dts/exynos5250-smdk5250.dts +++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts @@ -151,6 +151,7 @@ reg = <0>; bus-width = <4>; samsung,cd-pinmux-gpio = <&gpc3 2 2 3 3>; + disable-wp; gpios = <&gpc3 0 2 0 3>, <&gpc3 1 2 0 3>, <&gpc3 3 2 3 3>, <&gpc3 4 2 3 3>, <&gpc3 5 2 3 3>, <&gpc3 6 2 3 3>, diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 21056b9ef0a0..5bab73b91c20 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -59,6 +59,12 @@ MODULE_ALIAS("mmc:block"); #define INAND_CMD38_ARG_SECTRIM2 0x88 #define MMC_BLK_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */ +#define mmc_req_rel_wr(req) (((req->cmd_flags & REQ_FUA) || \ + (req->cmd_flags & REQ_META)) && \ + (rq_data_dir(req) == WRITE)) +#define PACKED_CMD_VER 0x01 +#define PACKED_CMD_WR 0x02 + static DEFINE_MUTEX(block_mutex); /* @@ -89,6 +95,7 @@ struct mmc_blk_data { unsigned int flags; #define MMC_BLK_CMD23 (1 << 0) /* Can do SET_BLOCK_COUNT for multiblock */ #define MMC_BLK_REL_WR (1 << 1) /* MMC Reliable write support */ +#define MMC_BLK_PACKED_CMD (1 << 2) /* MMC packed command support */ unsigned int usage; unsigned int read_only; @@ -113,15 +120,10 @@ struct mmc_blk_data { static DEFINE_MUTEX(open_lock); -enum mmc_blk_status { - MMC_BLK_SUCCESS = 0, - MMC_BLK_PARTIAL, - MMC_BLK_CMD_ERR, - MMC_BLK_RETRY, - MMC_BLK_ABORT, - MMC_BLK_DATA_ERR, - MMC_BLK_ECC_ERR, - MMC_BLK_NOMEDIUM, +enum { + MMC_PACKED_NR_IDX = -1, + MMC_PACKED_NR_ZERO, + MMC_PACKED_NR_SINGLE, }; module_param(perdev_minors, int, 0444); @@ -131,6 +133,19 @@ static inline int mmc_blk_part_switch(struct mmc_card *card, struct mmc_blk_data *md); static int get_card_status(struct mmc_card *card, u32 *status, int retries); +static inline void mmc_blk_clear_packed(struct mmc_queue_req *mqrq) +{ + struct mmc_packed *packed = mqrq->packed; + + BUG_ON(!packed); + + mqrq->cmd_type = MMC_PACKED_NONE; + packed->nr_entries = MMC_PACKED_NR_ZERO; + packed->idx_failure = MMC_PACKED_NR_IDX; + packed->retries = 0; + packed->blocks = 0; +} + static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk) { struct mmc_blk_data *md; @@ -1148,12 +1163,78 @@ static int mmc_blk_err_check(struct mmc_card *card, if (!brq->data.bytes_xfered) return MMC_BLK_RETRY; + if (mmc_packed_cmd(mq_mrq->cmd_type)) { + if (unlikely(brq->data.blocks << 9 != brq->data.bytes_xfered)) + return MMC_BLK_PARTIAL; + else + return MMC_BLK_SUCCESS; + } + if (blk_rq_bytes(req) != brq->data.bytes_xfered) return MMC_BLK_PARTIAL; return MMC_BLK_SUCCESS; } +static int mmc_blk_packed_err_check(struct mmc_card *card, + struct mmc_async_req *areq) +{ + struct mmc_queue_req *mq_rq = container_of(areq, struct mmc_queue_req, + mmc_active); + struct request *req = mq_rq->req; + struct mmc_packed *packed = mq_rq->packed; + int err, check, status; + u8 *ext_csd; + + BUG_ON(!packed); + + packed->retries--; + check = mmc_blk_err_check(card, areq); + err = get_card_status(card, &status, 0); + if (err) { + pr_err("%s: error %d sending status command\n", + req->rq_disk->disk_name, err); + return MMC_BLK_ABORT; + } + + if (status & R1_EXCEPTION_EVENT) { + ext_csd = kzalloc(512, GFP_KERNEL); + if (!ext_csd) { + pr_err("%s: unable to allocate buffer for ext_csd\n", + req->rq_disk->disk_name); + return -ENOMEM; + } + + err = mmc_send_ext_csd(card, ext_csd); + if (err) { + pr_err("%s: error %d sending ext_csd\n", + req->rq_disk->disk_name, err); + check = MMC_BLK_ABORT; + goto free; + } + + if ((ext_csd[EXT_CSD_EXP_EVENTS_STATUS] & + EXT_CSD_PACKED_FAILURE) && + (ext_csd[EXT_CSD_PACKED_CMD_STATUS] & + EXT_CSD_PACKED_GENERIC_ERROR)) { + if (ext_csd[EXT_CSD_PACKED_CMD_STATUS] & + EXT_CSD_PACKED_INDEXED_ERROR) { + packed->idx_failure = + ext_csd[EXT_CSD_PACKED_FAILURE_INDEX] - 1; + check = MMC_BLK_PARTIAL; + } + pr_err("%s: packed cmd failed, nr %u, sectors %u, " + "failure index: %d\n", + req->rq_disk->disk_name, packed->nr_entries, + packed->blocks, packed->idx_failure); + } +free: + kfree(ext_csd); + } + + return check; +} + static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, struct mmc_card *card, int disable_multi, @@ -1308,10 +1389,221 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, mmc_queue_bounce_pre(mqrq); } +static inline u8 mmc_calc_packed_hdr_segs(struct request_queue *q, + struct mmc_card *card) +{ + unsigned int hdr_sz = mmc_large_sector(card) ? 4096 : 512; + unsigned int max_seg_sz = queue_max_segment_size(q); + unsigned int len, nr_segs = 0; + + do { + len = min(hdr_sz, max_seg_sz); + hdr_sz -= len; + nr_segs++; + } while (hdr_sz); + + return nr_segs; +} + +static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq, struct request *req) +{ + struct request_queue *q = mq->queue; + struct mmc_card *card = mq->card; + struct request *cur = req, *next = NULL; + struct mmc_blk_data *md = mq->data; + struct mmc_queue_req *mqrq = mq->mqrq_cur; + bool en_rel_wr = card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN; + unsigned int req_sectors = 0, phys_segments = 0; + unsigned int max_blk_count, max_phys_segs; + bool put_back = true; + u8 max_packed_rw = 0; + u8 reqs = 0; + + if (!(md->flags & MMC_BLK_PACKED_CMD)) + goto no_packed; + + if ((rq_data_dir(cur) == WRITE) && + mmc_host_packed_wr(card->host)) + max_packed_rw = card->ext_csd.max_packed_writes; + + if (max_packed_rw == 0) + goto no_packed; + + if (mmc_req_rel_wr(cur) && + (md->flags & MMC_BLK_REL_WR) && !en_rel_wr) + goto no_packed; + + if (mmc_large_sector(card) && + !IS_ALIGNED(blk_rq_sectors(cur), 8)) + goto no_packed; + + mmc_blk_clear_packed(mqrq); + + max_blk_count = min(card->host->max_blk_count, + card->host->max_req_size >> 9); + if (unlikely(max_blk_count > 0xffff)) + max_blk_count = 0xffff; + + max_phys_segs = queue_max_segments(q); + req_sectors += blk_rq_sectors(cur); + phys_segments += cur->nr_phys_segments; + + if (rq_data_dir(cur) == WRITE) { + req_sectors += mmc_large_sector(card) ? 8 : 1; + phys_segments += mmc_calc_packed_hdr_segs(q, card); + } + + do { + if (reqs >= max_packed_rw - 1) { + put_back = false; + break; + } + + spin_lock_irq(q->queue_lock); + next = blk_fetch_request(q); + spin_unlock_irq(q->queue_lock); + if (!next) { + put_back = false; + break; + } + + if (mmc_large_sector(card) && + !IS_ALIGNED(blk_rq_sectors(next), 8)) + break; + + if (next->cmd_flags & REQ_DISCARD || + next->cmd_flags & REQ_FLUSH) + break; + + if (rq_data_dir(cur) != rq_data_dir(next)) + break; + + if (mmc_req_rel_wr(next) && + (md->flags & MMC_BLK_REL_WR) && !en_rel_wr) + break; + + req_sectors += blk_rq_sectors(next); + if (req_sectors > max_blk_count) + break; + + phys_segments += next->nr_phys_segments; + if (phys_segments > max_phys_segs) + break; + + list_add_tail(&next->queuelist, &mqrq->packed->list); + cur = next; + reqs++; + } while (1); + + if (put_back) { + spin_lock_irq(q->queue_lock); + blk_requeue_request(q, next); + spin_unlock_irq(q->queue_lock); + } + + if (reqs > 0) { + list_add(&req->queuelist, &mqrq->packed->list); + mqrq->packed->nr_entries = ++reqs; + mqrq->packed->retries = reqs; + return reqs; + } + +no_packed: + mqrq->cmd_type = MMC_PACKED_NONE; + return 0; +} + +static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq, + struct mmc_card *card, + struct mmc_queue *mq) +{ + struct mmc_blk_request *brq = &mqrq->brq; + struct request *req = mqrq->req; + struct request *prq; + struct mmc_blk_data *md = mq->data; + struct mmc_packed *packed = mqrq->packed; + bool do_rel_wr, do_data_tag; + u32 *packed_cmd_hdr; + u8 hdr_blocks; + u8 i = 1; + + BUG_ON(!packed); + + mqrq->cmd_type = MMC_PACKED_WRITE; + packed->blocks = 0; + packed->idx_failure = MMC_PACKED_NR_IDX; + + packed_cmd_hdr = packed->cmd_hdr; + memset(packed_cmd_hdr, 0, sizeof(packed->cmd_hdr)); + packed_cmd_hdr[0] = (packed->nr_entries << 16) | + (PACKED_CMD_WR << 8) | PACKED_CMD_VER; + hdr_blocks = mmc_large_sector(card) ? 8 : 1; + + /* + * Argument for each entry of packed group + */ + list_for_each_entry(prq, &packed->list, queuelist) { + do_rel_wr = mmc_req_rel_wr(prq) && (md->flags & MMC_BLK_REL_WR); + do_data_tag = (card->ext_csd.data_tag_unit_size) && + (prq->cmd_flags & REQ_META) && + (rq_data_dir(prq) == WRITE) && + ((brq->data.blocks * brq->data.blksz) >= + card->ext_csd.data_tag_unit_size); + /* Argument of CMD23 */ + packed_cmd_hdr[(i * 2)] = + (do_rel_wr ? MMC_CMD23_ARG_REL_WR : 0) | + (do_data_tag ? MMC_CMD23_ARG_TAG_REQ : 0) | + blk_rq_sectors(prq); + /* Argument of CMD18 or CMD25 */ + packed_cmd_hdr[((i * 2)) + 1] = + mmc_card_blockaddr(card) ? + blk_rq_pos(prq) : blk_rq_pos(prq) << 9; + packed->blocks += blk_rq_sectors(prq); + i++; + } + + memset(brq, 0, sizeof(struct mmc_blk_request)); + brq->mrq.cmd = &brq->cmd; + brq->mrq.data = &brq->data; + brq->mrq.sbc = &brq->sbc; + brq->mrq.stop = &brq->stop; + + brq->sbc.opcode = MMC_SET_BLOCK_COUNT; + brq->sbc.arg = MMC_CMD23_ARG_PACKED | (packed->blocks + hdr_blocks); + brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC; + + brq->cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK; + brq->cmd.arg = blk_rq_pos(req); + if (!mmc_card_blockaddr(card)) + brq->cmd.arg <<= 9; + brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; + + brq->data.blksz = 512; + brq->data.blocks = packed->blocks + hdr_blocks; + brq->data.flags |= MMC_DATA_WRITE; + + brq->stop.opcode = MMC_STOP_TRANSMISSION; + brq->stop.arg = 0; + brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; + + mmc_set_data_timeout(&brq->data, card); + + brq->data.sg = mqrq->sg; + brq->data.sg_len = mmc_queue_map_sg(mq, mqrq); + + mqrq->mmc_active.mrq = &brq->mrq; + mqrq->mmc_active.err_check = mmc_blk_packed_err_check; + + mmc_queue_bounce_pre(mqrq); +} + static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card, struct mmc_blk_request *brq, struct request *req, int ret) { + struct mmc_queue_req *mq_rq; + mq_rq = container_of(brq, struct mmc_queue_req, brq); + /* * If this is an SD card and we're writing, we can first * mark the known good sectors as ok. @@ -1328,11 +1620,84 @@ static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card, ret = blk_end_request(req, 0, blocks << 9); } } else { - ret = blk_end_request(req, 0, brq->data.bytes_xfered); + if (!mmc_packed_cmd(mq_rq->cmd_type)) + ret = blk_end_request(req, 0, brq->data.bytes_xfered); } return ret; } +static int mmc_blk_end_packed_req(struct mmc_queue_req *mq_rq) +{ + struct request *prq; + struct mmc_packed *packed = mq_rq->packed; + int idx = packed->idx_failure, i = 0; + int ret = 0; + + BUG_ON(!packed); + + while (!list_empty(&packed->list)) { + prq = list_entry_rq(packed->list.next); + if (idx == i) { + /* retry from error index */ + packed->nr_entries -= idx; + mq_rq->req = prq; + ret = 1; + + if (packed->nr_entries == MMC_PACKED_NR_SINGLE) { + list_del_init(&prq->queuelist); + mmc_blk_clear_packed(mq_rq); + } + return ret; + } + list_del_init(&prq->queuelist); + blk_end_request(prq, 0, blk_rq_bytes(prq)); + i++; + } + + mmc_blk_clear_packed(mq_rq); + return ret; +} + +static void mmc_blk_abort_packed_req(struct mmc_queue_req *mq_rq) +{ + struct request *prq; + struct mmc_packed *packed = mq_rq->packed; + + BUG_ON(!packed); + + while (!list_empty(&packed->list)) { + prq = list_entry_rq(packed->list.next); + list_del_init(&prq->queuelist); + blk_end_request(prq, -EIO, blk_rq_bytes(prq)); + } + + mmc_blk_clear_packed(mq_rq); +} + +static void mmc_blk_revert_packed_req(struct mmc_queue *mq, + struct mmc_queue_req *mq_rq) +{ + struct request *prq; + struct request_queue *q = mq->queue; + struct mmc_packed *packed = mq_rq->packed; + + BUG_ON(!packed); + + while (!list_empty(&packed->list)) { + prq = list_entry_rq(packed->list.prev); + if (prq->queuelist.prev != &packed->list) { + list_del_init(&prq->queuelist); + spin_lock_irq(q->queue_lock); + blk_requeue_request(mq->queue, prq); + spin_unlock_irq(q->queue_lock); + } else { + list_del_init(&prq->queuelist); + } + } + + mmc_blk_clear_packed(mq_rq); +} + static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) { struct mmc_blk_data *md = mq->data; @@ -1343,10 +1708,15 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) struct mmc_queue_req *mq_rq; struct request *req = rqc; struct mmc_async_req *areq; + const u8 packed_nr = 2; + u8 reqs = 0; if (!rqc && !mq->mqrq_prev->req) return 0; + if (rqc) + reqs = mmc_blk_prep_packed_list(mq, rqc); + do { if (rqc) { /* @@ -1357,15 +1727,24 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) (card->ext_csd.data_sector_size == 4096)) { pr_err("%s: Transfer size is not 4KB sector size aligned\n", req->rq_disk->disk_name); + mq_rq = mq->mqrq_cur; goto cmd_abort; } - mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); + + if (reqs >= packed_nr) + mmc_blk_packed_hdr_wrq_prep(mq->mqrq_cur, + card, mq); + else + mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); areq = &mq->mqrq_cur->mmc_active; } else areq = NULL; areq = mmc_start_req(card->host, areq, (int *) &status); - if (!areq) + if (!areq) { + if (status == MMC_BLK_NEW_REQUEST) + mq->flags |= MMC_QUEUE_NEW_REQUEST; return 0; + } mq_rq = container_of(areq, struct mmc_queue_req, mmc_active); brq = &mq_rq->brq; @@ -1380,8 +1759,15 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) * A block was successfully transferred. */ mmc_blk_reset_success(md, type); - ret = blk_end_request(req, 0, + + if (mmc_packed_cmd(mq_rq->cmd_type)) { + ret = mmc_blk_end_packed_req(mq_rq); + break; + } else { + ret = blk_end_request(req, 0, brq->data.bytes_xfered); + } + /* * If the blk_end_request function returns non-zero even * though all data has been transferred and no errors @@ -1414,7 +1800,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) err = mmc_blk_reset(md, card->host, type); if (!err) break; - if (err == -ENODEV) + if (err == -ENODEV || + mmc_packed_cmd(mq_rq->cmd_type)) goto cmd_abort; /* Fall through */ } @@ -1438,30 +1825,62 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) break; case MMC_BLK_NOMEDIUM: goto cmd_abort; + default: + pr_err("%s: Unhandled return value (%d)", + req->rq_disk->disk_name, status); + goto cmd_abort; } if (ret) { - /* - * In case of a incomplete request - * prepare it again and resend. - */ - mmc_blk_rw_rq_prep(mq_rq, card, disable_multi, mq); - mmc_start_req(card->host, &mq_rq->mmc_active, NULL); + if (mmc_packed_cmd(mq_rq->cmd_type)) { + if (!mq_rq->packed->retries) + goto cmd_abort; + mmc_blk_packed_hdr_wrq_prep(mq_rq, card, mq); + mmc_start_req(card->host, + &mq_rq->mmc_active, NULL); + } else { + + /* + * In case of a incomplete request + * prepare it again and resend. + */ + mmc_blk_rw_rq_prep(mq_rq, card, + disable_multi, mq); + mmc_start_req(card->host, + &mq_rq->mmc_active, NULL); + } } } while (ret); return 1; cmd_abort: - if (mmc_card_removed(card)) - req->cmd_flags |= REQ_QUIET; - while (ret) - ret = blk_end_request(req, -EIO, blk_rq_cur_bytes(req)); + if (mmc_packed_cmd(mq_rq->cmd_type)) { + mmc_blk_abort_packed_req(mq_rq); + } else { + if (mmc_card_removed(card)) + req->cmd_flags |= REQ_QUIET; + while (ret) + ret = blk_end_request(req, -EIO, + blk_rq_cur_bytes(req)); + } start_new_req: if (rqc) { - mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); - mmc_start_req(card->host, &mq->mqrq_cur->mmc_active, NULL); + if (mmc_card_removed(card)) { + rqc->cmd_flags |= REQ_QUIET; + blk_end_request_all(rqc, -EIO); + } else { + /* + * If current request is packed, it needs to put back. + */ + if (mmc_packed_cmd(mq->mqrq_cur->cmd_type)) + mmc_blk_revert_packed_req(mq, mq->mqrq_cur); + + mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); + mmc_start_req(card->host, + &mq->mqrq_cur->mmc_active, NULL); + } } return 0; @@ -1472,6 +1891,8 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) int ret; struct mmc_blk_data *md = mq->data; struct mmc_card *card = md->queue.card; + struct mmc_host *host = card->host; + unsigned long flags; if (req && !mq->mqrq_prev->req) /* claim host only for the first request */ @@ -1486,6 +1907,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) goto out; } + mq->flags &= ~MMC_QUEUE_NEW_REQUEST; if (req && req->cmd_flags & REQ_DISCARD) { /* complete ongoing async transfer before issuing discard */ if (card->host->areq) @@ -1501,11 +1923,16 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) mmc_blk_issue_rw_rq(mq, NULL); ret = mmc_blk_issue_flush(mq, req); } else { + if (!req && host->areq) { + spin_lock_irqsave(&host->context_info.lock, flags); + host->context_info.is_waiting_last_req = true; + spin_unlock_irqrestore(&host->context_info.lock, flags); + } ret = mmc_blk_issue_rw_rq(mq, req); } out: - if (!req) + if (!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST)) /* release host only when there are no more requests */ mmc_release_host(card->host); return ret; @@ -1624,6 +2051,14 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA); } + if (mmc_card_mmc(card) && + (area_type == MMC_BLK_DATA_AREA_MAIN) && + (md->flags & MMC_BLK_CMD23) && + card->ext_csd.packed_event_en) { + if (!mmc_packed_init(&md->queue, card)) + md->flags |= MMC_BLK_PACKED_CMD; + } + return md; err_putdisk: @@ -1732,6 +2167,8 @@ static void mmc_blk_remove_req(struct mmc_blk_data *md) /* Then flush out any already in there */ mmc_cleanup_queue(&md->queue); + if (md->flags & MMC_BLK_PACKED_CMD) + mmc_packed_clean(&md->queue); mmc_blk_put(md); } } diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index fadf52eb5d70..fa4e44ee7961 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -22,7 +22,8 @@ #define MMC_QUEUE_BOUNCESZ 65536 -#define MMC_QUEUE_SUSPENDED (1 << 0) + +#define MMC_REQ_SPECIAL_MASK (REQ_DISCARD | REQ_FLUSH) /* * Prepare a MMC request. This just filters out odd stuff. @@ -58,6 +59,7 @@ static int mmc_queue_thread(void *d) do { struct request *req = NULL; struct mmc_queue_req *tmp; + unsigned int cmd_flags = 0; spin_lock_irq(q->queue_lock); set_current_state(TASK_INTERRUPTIBLE); @@ -67,12 +69,23 @@ static int mmc_queue_thread(void *d) if (req || mq->mqrq_prev->req) { set_current_state(TASK_RUNNING); + cmd_flags = req ? req->cmd_flags : 0; mq->issue_fn(mq, req); + if (mq->flags & MMC_QUEUE_NEW_REQUEST) { + mq->flags &= ~MMC_QUEUE_NEW_REQUEST; + continue; /* fetch again */ + } /* * Current request becomes previous request * and vice versa. + * In case of special requests, current request + * has been finished. Do not assign it to previous + * request. */ + if (cmd_flags & MMC_REQ_SPECIAL_MASK) + mq->mqrq_cur->req = NULL; + mq->mqrq_prev->brq.mrq.data = NULL; mq->mqrq_prev->req = NULL; tmp = mq->mqrq_prev; @@ -103,6 +116,8 @@ static void mmc_request_fn(struct request_queue *q) { struct mmc_queue *mq = q->queuedata; struct request *req; + unsigned long flags; + struct mmc_context_info *cntx; if (!mq) { while ((req = blk_fetch_request(q)) != NULL) { @@ -112,7 +127,20 @@ static void mmc_request_fn(struct request_queue *q) return; } - if (!mq->mqrq_cur->req && !mq->mqrq_prev->req) + cntx = &mq->card->host->context_info; + if (!mq->mqrq_cur->req && mq->mqrq_prev->req) { + /* + * New MMC request arrived when MMC thread may be + * blocked on the previous request to be complete + * with no current request fetched + */ + spin_lock_irqsave(&cntx->lock, flags); + if (cntx->is_waiting_last_req) { + cntx->is_new_req = true; + wake_up_interruptible(&cntx->wait); + } + spin_unlock_irqrestore(&cntx->lock, flags); + } else if (!mq->mqrq_cur->req && !mq->mqrq_prev->req) wake_up_process(mq->thread); } @@ -334,6 +362,49 @@ void mmc_cleanup_queue(struct mmc_queue *mq) } EXPORT_SYMBOL(mmc_cleanup_queue); +int mmc_packed_init(struct mmc_queue *mq, struct mmc_card *card) +{ + struct mmc_queue_req *mqrq_cur = &mq->mqrq[0]; + struct mmc_queue_req *mqrq_prev = &mq->mqrq[1]; + int ret = 0; + + + mqrq_cur->packed = kzalloc(sizeof(struct mmc_packed), GFP_KERNEL); + if (!mqrq_cur->packed) { + pr_warn("%s: unable to allocate packed cmd for mqrq_cur\n", + mmc_card_name(card)); + ret = -ENOMEM; + goto out; + } + + mqrq_prev->packed = kzalloc(sizeof(struct mmc_packed), GFP_KERNEL); + if (!mqrq_prev->packed) { + pr_warn("%s: unable to allocate packed cmd for mqrq_prev\n", + mmc_card_name(card)); + kfree(mqrq_cur->packed); + mqrq_cur->packed = NULL; + ret = -ENOMEM; + goto out; + } + + INIT_LIST_HEAD(&mqrq_cur->packed->list); + INIT_LIST_HEAD(&mqrq_prev->packed->list); + +out: + return ret; +} + +void mmc_packed_clean(struct mmc_queue *mq) +{ + struct mmc_queue_req *mqrq_cur = &mq->mqrq[0]; + struct mmc_queue_req *mqrq_prev = &mq->mqrq[1]; + + kfree(mqrq_cur->packed); + mqrq_cur->packed = NULL; + kfree(mqrq_prev->packed); + mqrq_prev->packed = NULL; +} + /** * mmc_queue_suspend - suspend a MMC request queue * @mq: MMC queue to suspend @@ -378,6 +449,41 @@ void mmc_queue_resume(struct mmc_queue *mq) } } +static unsigned int mmc_queue_packed_map_sg(struct mmc_queue *mq, + struct mmc_packed *packed, + struct scatterlist *sg, + enum mmc_packed_type cmd_type) +{ + struct scatterlist *__sg = sg; + unsigned int sg_len = 0; + struct request *req; + + if (mmc_packed_wr(cmd_type)) { + unsigned int hdr_sz = mmc_large_sector(mq->card) ? 4096 : 512; + unsigned int max_seg_sz = queue_max_segment_size(mq->queue); + unsigned int len, remain, offset = 0; + u8 *buf = (u8 *)packed->cmd_hdr; + + remain = hdr_sz; + do { + len = min(remain, max_seg_sz); + sg_set_buf(__sg, buf + offset, len); + offset += len; + remain -= len; + (__sg++)->page_link &= ~0x02; + sg_len++; + } while (remain); + } + + list_for_each_entry(req, &packed->list, queuelist) { + sg_len += blk_rq_map_sg(mq->queue, req, __sg); + __sg = sg + (sg_len - 1); + (__sg++)->page_link &= ~0x02; + } + sg_mark_end(sg + (sg_len - 1)); + return sg_len; +} + /* * Prepare the sg list(s) to be handed of to the host driver */ @@ -386,14 +492,26 @@ unsigned int mmc_queue_map_sg(struct mmc_queue *mq, struct mmc_queue_req *mqrq) unsigned int sg_len; size_t buflen; struct scatterlist *sg; + enum mmc_packed_type cmd_type; int i; - if (!mqrq->bounce_buf) - return blk_rq_map_sg(mq->queue, mqrq->req, mqrq->sg); + cmd_type = mqrq->cmd_type; + + if (!mqrq->bounce_buf) { + if (mmc_packed_cmd(cmd_type)) + return mmc_queue_packed_map_sg(mq, mqrq->packed, + mqrq->sg, cmd_type); + else + return blk_rq_map_sg(mq->queue, mqrq->req, mqrq->sg); + } BUG_ON(!mqrq->bounce_sg); - sg_len = blk_rq_map_sg(mq->queue, mqrq->req, mqrq->bounce_sg); + if (mmc_packed_cmd(cmd_type)) + sg_len = mmc_queue_packed_map_sg(mq, mqrq->packed, + mqrq->bounce_sg, cmd_type); + else + sg_len = blk_rq_map_sg(mq->queue, mqrq->req, mqrq->bounce_sg); mqrq->bounce_sg_len = sg_len; diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h index d2a1eb4b9f9f..031bf6376c99 100644 --- a/drivers/mmc/card/queue.h +++ b/drivers/mmc/card/queue.h @@ -12,6 +12,23 @@ struct mmc_blk_request { struct mmc_data data; }; +enum mmc_packed_type { + MMC_PACKED_NONE = 0, + MMC_PACKED_WRITE, +}; + +#define mmc_packed_cmd(type) ((type) != MMC_PACKED_NONE) +#define mmc_packed_wr(type) ((type) == MMC_PACKED_WRITE) + +struct mmc_packed { + struct list_head list; + u32 cmd_hdr[1024]; + unsigned int blocks; + u8 nr_entries; + u8 retries; + s16 idx_failure; +}; + struct mmc_queue_req { struct request *req; struct mmc_blk_request brq; @@ -20,6 +37,8 @@ struct mmc_queue_req { struct scatterlist *bounce_sg; unsigned int bounce_sg_len; struct mmc_async_req mmc_active; + enum mmc_packed_type cmd_type; + struct mmc_packed *packed; }; struct mmc_queue { @@ -27,6 +46,9 @@ struct mmc_queue { struct task_struct *thread; struct semaphore thread_sem; unsigned int flags; +#define MMC_QUEUE_SUSPENDED (1 << 0) +#define MMC_QUEUE_NEW_REQUEST (1 << 1) + int (*issue_fn)(struct mmc_queue *, struct request *); void *data; struct request_queue *queue; @@ -46,4 +68,7 @@ extern unsigned int mmc_queue_map_sg(struct mmc_queue *, extern void mmc_queue_bounce_pre(struct mmc_queue_req *); extern void mmc_queue_bounce_post(struct mmc_queue_req *); +extern int mmc_packed_init(struct mmc_queue *, struct mmc_card *); +extern void mmc_packed_clean(struct mmc_queue *); + #endif diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index 420cb6753c1e..e219c97a02a4 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -321,6 +321,7 @@ int mmc_add_card(struct mmc_card *card) #ifdef CONFIG_DEBUG_FS mmc_add_card_debugfs(card); #endif + mmc_init_context_info(card->host); ret = device_add(&card->dev); if (ret) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index aaed7687cf09..08a3cf2a7610 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -319,11 +319,45 @@ out: } EXPORT_SYMBOL(mmc_start_bkops); +/* + * mmc_wait_data_done() - done callback for data request + * @mrq: done data request + * + * Wakes up mmc context, passed as a callback to host controller driver + */ +static void mmc_wait_data_done(struct mmc_request *mrq) +{ + mrq->host->context_info.is_done_rcv = true; + wake_up_interruptible(&mrq->host->context_info.wait); +} + static void mmc_wait_done(struct mmc_request *mrq) { complete(&mrq->completion); } +/* + *__mmc_start_data_req() - starts data request + * @host: MMC host to start the request + * @mrq: data request to start + * + * Sets the done callback to be called when request is completed by the card. + * Starts data mmc request execution + */ +static int __mmc_start_data_req(struct mmc_host *host, struct mmc_request *mrq) +{ + mrq->done = mmc_wait_data_done; + mrq->host = host; + if (mmc_card_removed(host->card)) { + mrq->cmd->error = -ENOMEDIUM; + mmc_wait_data_done(mrq); + return -ENOMEDIUM; + } + mmc_start_request(host, mrq); + + return 0; +} + static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq) { init_completion(&mrq->completion); @@ -337,6 +371,62 @@ static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq) return 0; } +/* + * mmc_wait_for_data_req_done() - wait for request completed + * @host: MMC host to prepare the command. + * @mrq: MMC request to wait for + * + * Blocks MMC context till host controller will ack end of data request + * execution or new request notification arrives from the block layer. + * Handles command retries. + * + * Returns enum mmc_blk_status after checking errors. + */ +static int mmc_wait_for_data_req_done(struct mmc_host *host, + struct mmc_request *mrq, + struct mmc_async_req *next_req) +{ + struct mmc_command *cmd; + struct mmc_context_info *context_info = &host->context_info; + int err; + unsigned long flags; + + while (1) { + wait_event_interruptible(context_info->wait, + (context_info->is_done_rcv || + context_info->is_new_req)); + spin_lock_irqsave(&context_info->lock, flags); + context_info->is_waiting_last_req = false; + spin_unlock_irqrestore(&context_info->lock, flags); + if (context_info->is_done_rcv) { + context_info->is_done_rcv = false; + context_info->is_new_req = false; + cmd = mrq->cmd; + if (!cmd->error || !cmd->retries || + mmc_card_removed(host->card)) { + err = host->areq->err_check(host->card, + host->areq); + break; /* return err */ + } else { + pr_info("%s: req failed (CMD%u): %d, retrying...\n", + mmc_hostname(host), + cmd->opcode, cmd->error); + cmd->retries--; + cmd->error = 0; + host->ops->request(host, mrq); + continue; /* wait for done/new event again */ + } + } else if (context_info->is_new_req) { + context_info->is_new_req = false; + if (!next_req) { + err = MMC_BLK_NEW_REQUEST; + break; /* return err */ + } + } + } + return err; +} + static void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq) { @@ -426,8 +516,16 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host, mmc_pre_req(host, areq->mrq, !host->areq); if (host->areq) { - mmc_wait_for_req_done(host, host->areq->mrq); - err = host->areq->err_check(host->card, host->areq); + err = mmc_wait_for_data_req_done(host, host->areq->mrq, areq); + if (err == MMC_BLK_NEW_REQUEST) { + if (error) + *error = err; + /* + * The previous request was not completed, + * nothing to return + */ + return NULL; + } /* * Check BKOPS urgency for each R1 response */ @@ -439,14 +537,14 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host, } if (!err && areq) - start_err = __mmc_start_req(host, areq->mrq); + start_err = __mmc_start_data_req(host, areq->mrq); if (host->areq) mmc_post_req(host, host->areq->mrq, 0); /* Cancel a prepared request if it was not started. */ if ((err || start_err) && areq) - mmc_post_req(host, areq->mrq, -EINVAL); + mmc_post_req(host, areq->mrq, -EINVAL); if (err) host->areq = NULL; @@ -1137,7 +1235,7 @@ int mmc_regulator_set_ocr(struct mmc_host *mmc, */ voltage = regulator_get_voltage(supply); - if (regulator_count_voltages(supply) == 1) + if (!regulator_can_change_voltage(supply)) min_uV = max_uV = voltage; if (voltage < 0) @@ -1219,10 +1317,30 @@ u32 mmc_select_voltage(struct mmc_host *host, u32 ocr) return ocr; } -int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11) +int __mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage) +{ + int err = 0; + int old_signal_voltage = host->ios.signal_voltage; + + host->ios.signal_voltage = signal_voltage; + if (host->ops->start_signal_voltage_switch) { + mmc_host_clk_hold(host); + err = host->ops->start_signal_voltage_switch(host, &host->ios); + mmc_host_clk_release(host); + } + + if (err) + host->ios.signal_voltage = old_signal_voltage; + + return err; + +} + +int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage) { struct mmc_command cmd = {0}; int err = 0; + u32 clock; BUG_ON(!host); @@ -1230,27 +1348,81 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11 * Send CMD11 only if the request is to switch the card to * 1.8V signalling. */ - if ((signal_voltage != MMC_SIGNAL_VOLTAGE_330) && cmd11) { - cmd.opcode = SD_SWITCH_VOLTAGE; - cmd.arg = 0; - cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; + if (signal_voltage == MMC_SIGNAL_VOLTAGE_330) + return __mmc_set_signal_voltage(host, signal_voltage); - err = mmc_wait_for_cmd(host, &cmd, 0); - if (err) - return err; + /* + * If we cannot switch voltages, return failure so the caller + * can continue without UHS mode + */ + if (!host->ops->start_signal_voltage_switch) + return -EPERM; + if (!host->ops->card_busy) + pr_warning("%s: cannot verify signal voltage switch\n", + mmc_hostname(host)); + + cmd.opcode = SD_SWITCH_VOLTAGE; + cmd.arg = 0; + cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; - if (!mmc_host_is_spi(host) && (cmd.resp[0] & R1_ERROR)) - return -EIO; + err = mmc_wait_for_cmd(host, &cmd, 0); + if (err) + return err; + + if (!mmc_host_is_spi(host) && (cmd.resp[0] & R1_ERROR)) + return -EIO; + + mmc_host_clk_hold(host); + /* + * The card should drive cmd and dat[0:3] low immediately + * after the response of cmd11, but wait 1 ms to be sure + */ + mmc_delay(1); + if (host->ops->card_busy && !host->ops->card_busy(host)) { + err = -EAGAIN; + goto power_cycle; } + /* + * During a signal voltage level switch, the clock must be gated + * for 5 ms according to the SD spec + */ + clock = host->ios.clock; + host->ios.clock = 0; + mmc_set_ios(host); - host->ios.signal_voltage = signal_voltage; + if (__mmc_set_signal_voltage(host, signal_voltage)) { + /* + * Voltages may not have been switched, but we've already + * sent CMD11, so a power cycle is required anyway + */ + err = -EAGAIN; + goto power_cycle; + } - if (host->ops->start_signal_voltage_switch) { - mmc_host_clk_hold(host); - err = host->ops->start_signal_voltage_switch(host, &host->ios); - mmc_host_clk_release(host); + /* Keep clock gated for at least 5 ms */ + mmc_delay(5); + host->ios.clock = clock; + mmc_set_ios(host); + + /* Wait for at least 1 ms according to spec */ + mmc_delay(1); + + /* + * Failure to switch is indicated by the card holding + * dat[0:3] low + */ + if (host->ops->card_busy && host->ops->card_busy(host)) + err = -EAGAIN; + +power_cycle: + if (err) { + pr_debug("%s: Signal voltage switch failed, " + "power cycling card\n", mmc_hostname(host)); + mmc_power_cycle(host); } + mmc_host_clk_release(host); + return err; } @@ -1314,7 +1486,7 @@ static void mmc_power_up(struct mmc_host *host) mmc_set_ios(host); /* Set signal voltage to 3.3V */ - mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, false); + __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); /* * This delay should be sufficient to allow the power supply @@ -1372,6 +1544,14 @@ void mmc_power_off(struct mmc_host *host) mmc_host_clk_release(host); } +void mmc_power_cycle(struct mmc_host *host) +{ + mmc_power_off(host); + /* Wait at least 1 ms according to SD spec */ + mmc_delay(1); + mmc_power_up(host); +} + /* * Cleanup when the last reference to the bus operator is dropped. */ @@ -2388,6 +2568,7 @@ EXPORT_SYMBOL(mmc_flush_cache); * Turn the cache ON/OFF. * Turning the cache OFF shall trigger flushing of the data * to the non-volatile storage. + * This function should be called with host claimed */ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) { @@ -2399,7 +2580,6 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) mmc_card_is_removable(host)) return err; - mmc_claim_host(host); if (card && mmc_card_mmc(card) && (card->ext_csd.cache_size > 0)) { enable = !!enable; @@ -2417,7 +2597,6 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) card->ext_csd.cache_ctrl = enable; } } - mmc_release_host(host); return err; } @@ -2436,10 +2615,6 @@ int mmc_suspend_host(struct mmc_host *host) cancel_delayed_work(&host->detect); mmc_flush_scheduled_work(); - err = mmc_cache_ctrl(host, 0); - if (err) - goto out; - mmc_bus_get(host); if (host->bus_ops && !host->bus_dead) { if (host->bus_ops->suspend) { @@ -2581,6 +2756,23 @@ int mmc_pm_notify(struct notifier_block *notify_block, } #endif +/** + * mmc_init_context_info() - init synchronization context + * @host: mmc host + * + * Init struct context_info needed to implement asynchronous + * request mechanism, used by mmc core, host driver and mmc requests + * supplier. + */ +void mmc_init_context_info(struct mmc_host *host) +{ + spin_lock_init(&host->context_info.lock); + host->context_info.is_new_req = false; + host->context_info.is_done_rcv = false; + host->context_info.is_waiting_last_req = false; + init_waitqueue_head(&host->context_info.wait); +} + static int __init mmc_init(void) { int ret; diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index 3bdafbca354f..b9f18a2a8874 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -40,11 +40,12 @@ void mmc_set_ungated(struct mmc_host *host); void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode); void mmc_set_bus_width(struct mmc_host *host, unsigned int width); u32 mmc_select_voltage(struct mmc_host *host, u32 ocr); -int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, - bool cmd11); +int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage); +int __mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage); void mmc_set_timing(struct mmc_host *host, unsigned int timing); void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type); void mmc_power_off(struct mmc_host *host); +void mmc_power_cycle(struct mmc_host *host); static inline void mmc_delay(unsigned int ms) { @@ -76,5 +77,6 @@ void mmc_remove_host_debugfs(struct mmc_host *host); void mmc_add_card_debugfs(struct mmc_card *card); void mmc_remove_card_debugfs(struct mmc_card *card); +void mmc_init_context_info(struct mmc_host *host); #endif diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index ee2e16b17017..821cd8224137 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -15,6 +15,8 @@ #include <linux/device.h> #include <linux/err.h> #include <linux/idr.h> +#include <linux/of.h> +#include <linux/of_gpio.h> #include <linux/pagemap.h> #include <linux/export.h> #include <linux/leds.h> @@ -23,6 +25,7 @@ #include <linux/mmc/host.h> #include <linux/mmc/card.h> +#include <linux/mmc/slot-gpio.h> #include "core.h" #include "host.h" @@ -295,6 +298,126 @@ static inline void mmc_host_clk_sysfs_init(struct mmc_host *host) #endif /** + * mmc_of_parse() - parse host's device-tree node + * @host: host whose node should be parsed. + * + * To keep the rest of the MMC subsystem unaware of whether DT has been + * used to to instantiate and configure this host instance or not, we + * parse the properties and set respective generic mmc-host flags and + * parameters. + */ +void mmc_of_parse(struct mmc_host *host) +{ + struct device_node *np; + u32 bus_width; + bool explicit_inv_wp, gpio_inv_wp = false; + enum of_gpio_flags flags; + int len, ret, gpio; + + if (!host->parent || !host->parent->of_node) + return; + + np = host->parent->of_node; + + /* "bus-width" is translated to MMC_CAP_*_BIT_DATA flags */ + if (of_property_read_u32(np, "bus-width", &bus_width) < 0) { + dev_dbg(host->parent, + "\"bus-width\" property is missing, assuming 1 bit.\n"); + bus_width = 1; + } + + switch (bus_width) { + case 8: + host->caps |= MMC_CAP_8_BIT_DATA; + /* Hosts capable of 8-bit transfers can also do 4 bits */ + case 4: + host->caps |= MMC_CAP_4_BIT_DATA; + break; + case 1: + break; + default: + dev_err(host->parent, + "Invalid \"bus-width\" value %ud!\n", bus_width); + } + + /* f_max is obtained from the optional "max-frequency" property */ + of_property_read_u32(np, "max-frequency", &host->f_max); + + /* + * Configure CD and WP pins. They are both by default active low to + * match the SDHCI spec. If GPIOs are provided for CD and / or WP, the + * mmc-gpio helpers are used to attach, configure and use them. If + * polarity inversion is specified in DT, one of MMC_CAP2_CD_ACTIVE_HIGH + * and MMC_CAP2_RO_ACTIVE_HIGH capability-2 flags is set. If the + * "broken-cd" property is provided, the MMC_CAP_NEEDS_POLL capability + * is set. If the "non-removable" property is found, the + * MMC_CAP_NONREMOVABLE capability is set and no card-detection + * configuration is performed. + */ + + /* Parse Card Detection */ + if (of_find_property(np, "non-removable", &len)) { + host->caps |= MMC_CAP_NONREMOVABLE; + } else { + bool explicit_inv_cd, gpio_inv_cd = false; + + explicit_inv_cd = of_property_read_bool(np, "cd-inverted"); + + if (of_find_property(np, "broken-cd", &len)) + host->caps |= MMC_CAP_NEEDS_POLL; + + gpio = of_get_named_gpio_flags(np, "cd-gpios", 0, &flags); + if (gpio_is_valid(gpio)) { + if (!(flags & OF_GPIO_ACTIVE_LOW)) + gpio_inv_cd = true; + + ret = mmc_gpio_request_cd(host, gpio); + if (ret < 0) + dev_err(host->parent, + "Failed to request CD GPIO #%d: %d!\n", + gpio, ret); + else + dev_info(host->parent, "Got CD GPIO #%d.\n", + gpio); + } + + if (explicit_inv_cd ^ gpio_inv_cd) + host->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; + } + + /* Parse Write Protection */ + explicit_inv_wp = of_property_read_bool(np, "wp-inverted"); + + gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags); + if (gpio_is_valid(gpio)) { + if (!(flags & OF_GPIO_ACTIVE_LOW)) + gpio_inv_wp = true; + + ret = mmc_gpio_request_ro(host, gpio); + if (ret < 0) + dev_err(host->parent, + "Failed to request WP GPIO: %d!\n", ret); + } + if (explicit_inv_wp ^ gpio_inv_wp) + host->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; + + if (of_find_property(np, "cap-sd-highspeed", &len)) + host->caps |= MMC_CAP_SD_HIGHSPEED; + if (of_find_property(np, "cap-mmc-highspeed", &len)) + host->caps |= MMC_CAP_MMC_HIGHSPEED; + if (of_find_property(np, "cap-power-off-card", &len)) + host->caps |= MMC_CAP_POWER_OFF_CARD; + if (of_find_property(np, "cap-sdio-irq", &len)) + host->caps |= MMC_CAP_SDIO_IRQ; + if (of_find_property(np, "keep-power-in-suspend", &len)) + host->pm_caps |= MMC_PM_KEEP_POWER; + if (of_find_property(np, "enable-sdio-wakeup", &len)) + host->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; +} + +EXPORT_SYMBOL(mmc_of_parse); + +/** * mmc_alloc_host - initialise the per-host structure. * @extra: sizeof private data structure * @dev: pointer to host device model structure diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index e6e39111e05b..c8f3d6e0684e 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -496,7 +496,7 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) * RPMB regions are defined in multiples of 128K. */ card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; - if (ext_csd[EXT_CSD_RPMB_MULT]) { + if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, EXT_CSD_PART_CONFIG_ACC_RPMB, "rpmb", 0, false, @@ -538,6 +538,11 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) } else { card->ext_csd.data_tag_unit_size = 0; } + + card->ext_csd.max_packed_writes = + ext_csd[EXT_CSD_MAX_PACKED_WRITES]; + card->ext_csd.max_packed_reads = + ext_csd[EXT_CSD_MAX_PACKED_READS]; } else { card->ext_csd.data_sector_size = 512; } @@ -769,11 +774,11 @@ static int mmc_select_hs200(struct mmc_card *card) if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && host->caps2 & MMC_CAP2_HS200_1_2V_SDR) - err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120, 0); + err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); if (err && card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_8V && host->caps2 & MMC_CAP2_HS200_1_8V_SDR) - err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, 0); + err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); /* If fails try again during next card power cycle */ if (err) @@ -1221,8 +1226,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, * WARNING: eMMC rules are NOT the same as SD DDR */ if (ddr == MMC_1_2V_DDR_MODE) { - err = mmc_set_signal_voltage(host, - MMC_SIGNAL_VOLTAGE_120, 0); + err = __mmc_set_signal_voltage(host, + MMC_SIGNAL_VOLTAGE_120); if (err) goto err; } @@ -1275,6 +1280,29 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, } } + /* + * The mandatory minimum values are defined for packed command. + * read: 5, write: 3 + */ + if (card->ext_csd.max_packed_writes >= 3 && + card->ext_csd.max_packed_reads >= 5 && + host->caps2 & MMC_CAP2_PACKED_CMD) { + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_EXP_EVENTS_CTRL, + EXT_CSD_PACKED_EVENT_EN, + card->ext_csd.generic_cmd6_time); + if (err && err != -EBADMSG) + goto free_card; + if (err) { + pr_warn("%s: Enabling packed event failed\n", + mmc_hostname(card->host)); + card->ext_csd.packed_event_en = 0; + err = 0; + } else { + card->ext_csd.packed_event_en = 1; + } + } + if (!oldcard) host->card = card; @@ -1379,6 +1407,11 @@ static int mmc_suspend(struct mmc_host *host) BUG_ON(!host->card); mmc_claim_host(host); + + err = mmc_cache_ctrl(host, 0); + if (err) + goto out; + if (mmc_can_poweroff_notify(host->card)) err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT); else if (mmc_card_can_sleep(host)) @@ -1386,8 +1419,9 @@ static int mmc_suspend(struct mmc_host *host) else if (!mmc_host_is_spi(host)) err = mmc_deselect_cards(host); host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); - mmc_release_host(host); +out: + mmc_release_host(host); return err; } diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 6d8f7012d73a..49f04bc9d0eb 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -363,6 +363,7 @@ int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd) return mmc_send_cxd_data(card, card->host, MMC_SEND_EXT_CSD, ext_csd, 512); } +EXPORT_SYMBOL_GPL(mmc_send_ext_csd); int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp) { diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 74972c241dff..9e645e19cec6 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -444,8 +444,7 @@ static void sd_update_bus_speed_mode(struct mmc_card *card) * If the host doesn't support any of the UHS-I modes, fallback on * default speed. */ - if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | - MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50))) { + if (!mmc_host_uhs(card->host)) { card->sd_bus_speed = 0; return; } @@ -713,6 +712,14 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) { int err; u32 max_current; + int retries = 10; + +try_again: + if (!retries) { + ocr &= ~SD_OCR_S18R; + pr_warning("%s: Skipping voltage switch\n", + mmc_hostname(host)); + } /* * Since we're changing the OCR value, we seem to @@ -734,10 +741,10 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) /* * If the host supports one of UHS-I modes, request the card - * to switch to 1.8V signaling level. + * to switch to 1.8V signaling level. If the card has failed + * repeatedly to switch however, skip this. */ - if (host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | - MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50)) + if (retries && mmc_host_uhs(host)) ocr |= SD_OCR_S18R; /* @@ -748,7 +755,6 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) if (max_current > 150) ocr |= SD_OCR_XPC; -try_again: err = mmc_send_app_op_cond(host, ocr, rocr); if (err) return err; @@ -759,9 +765,12 @@ try_again: */ if (!mmc_host_is_spi(host) && rocr && ((*rocr & 0x41000000) == 0x41000000)) { - err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, true); - if (err) { - ocr &= ~SD_OCR_S18R; + err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); + if (err == -EAGAIN) { + retries--; + goto try_again; + } else if (err) { + retries = 0; goto try_again; } } @@ -960,16 +969,6 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, /* Card is an ultra-high-speed card */ mmc_card_set_uhs(card); - - /* - * Since initialization is now complete, enable preset - * value registers for UHS-I cards. - */ - if (host->ops->enable_preset_value) { - mmc_host_clk_hold(card->host); - host->ops->enable_preset_value(host, true); - mmc_host_clk_release(card->host); - } } else { /* * Attempt to change to high-speed (if supported) @@ -1148,13 +1147,6 @@ int mmc_attach_sd(struct mmc_host *host) BUG_ON(!host); WARN_ON(!host->claimed); - /* Disable preset value enable if already set since last time */ - if (host->ops->enable_preset_value) { - mmc_host_clk_hold(host); - host->ops->enable_preset_value(host, false); - mmc_host_clk_release(host); - } - err = mmc_send_app_op_cond(host, 0, &ocr); if (err) return err; diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 2273ce6b6c1a..aa0719a4dfd1 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -157,10 +157,7 @@ static int sdio_read_cccr(struct mmc_card *card, u32 ocr) if (ret) goto out; - if (card->host->caps & - (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | - MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | - MMC_CAP_UHS_DDR50)) { + if (mmc_host_uhs(card->host)) { if (data & SDIO_UHS_DDR50) card->sw_caps.sd3_bus_mode |= SD_MODE_UHS_DDR50; @@ -478,8 +475,7 @@ static int sdio_set_bus_speed_mode(struct mmc_card *card) * If the host doesn't support any of the UHS-I modes, fallback on * default speed. */ - if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | - MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50))) + if (!mmc_host_uhs(card->host)) return 0; bus_speed = SDIO_SPEED_SDR12; @@ -489,23 +485,27 @@ static int sdio_set_bus_speed_mode(struct mmc_card *card) bus_speed = SDIO_SPEED_SDR104; timing = MMC_TIMING_UHS_SDR104; card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; + card->sd_bus_speed = UHS_SDR104_BUS_SPEED; } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { bus_speed = SDIO_SPEED_DDR50; timing = MMC_TIMING_UHS_DDR50; card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; + card->sd_bus_speed = UHS_DDR50_BUS_SPEED; } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50)) { bus_speed = SDIO_SPEED_SDR50; timing = MMC_TIMING_UHS_SDR50; card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; + card->sd_bus_speed = UHS_SDR50_BUS_SPEED; } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { bus_speed = SDIO_SPEED_SDR25; timing = MMC_TIMING_UHS_SDR25; card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; + card->sd_bus_speed = UHS_SDR25_BUS_SPEED; } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & @@ -513,6 +513,7 @@ static int sdio_set_bus_speed_mode(struct mmc_card *card) bus_speed = SDIO_SPEED_SDR12; timing = MMC_TIMING_UHS_SDR12; card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; + card->sd_bus_speed = UHS_SDR12_BUS_SPEED; } err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); @@ -583,10 +584,19 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, { struct mmc_card *card; int err; + int retries = 10; BUG_ON(!host); WARN_ON(!host->claimed); +try_again: + if (!retries) { + pr_warning("%s: Skipping voltage switch\n", + mmc_hostname(host)); + ocr &= ~R4_18V_PRESENT; + host->ocr &= ~R4_18V_PRESENT; + } + /* * Inform the card of the voltage */ @@ -645,14 +655,16 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, * systems that claim 1.8v signalling in fact do not support * it. */ - if ((ocr & R4_18V_PRESENT) && - (host->caps & - (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | - MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | - MMC_CAP_UHS_DDR50))) { - err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, - true); - if (err) { + if (!powered_resume && (ocr & R4_18V_PRESENT) && mmc_host_uhs(host)) { + err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); + if (err == -EAGAIN) { + sdio_reset(host); + mmc_go_idle(host); + mmc_send_if_cond(host, host->ocr_avail); + mmc_remove_card(card); + retries--; + goto try_again; + } else if (err) { ocr &= ~R4_18V_PRESENT; host->ocr &= ~R4_18V_PRESENT; } @@ -937,10 +949,12 @@ static int mmc_sdio_resume(struct mmc_host *host) mmc_claim_host(host); /* No need to reinitialize powered-resumed nonremovable cards */ - if (mmc_card_is_removable(host) || !mmc_card_keep_power(host)) + if (mmc_card_is_removable(host) || !mmc_card_keep_power(host)) { + sdio_reset(host); + mmc_go_idle(host); err = mmc_sdio_init_card(host, host->ocr, host->card, mmc_card_keep_power(host)); - else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) { + } else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) { /* We may have switched to 1-bit mode during suspend */ err = sdio_enable_4bit_bus(host->card); if (err > 0) { @@ -1020,6 +1034,10 @@ static int mmc_sdio_power_restore(struct mmc_host *host) goto out; } + if (mmc_host_uhs(host)) + /* to query card if 1.8V signalling is supported */ + host->ocr |= R4_18V_PRESENT; + ret = mmc_sdio_init_card(host, host->ocr, host->card, mmc_card_keep_power(host)); if (!ret && host->sdio_irqs) @@ -1085,6 +1103,10 @@ int mmc_attach_sdio(struct mmc_host *host) /* * Detect and init the card. */ + if (mmc_host_uhs(host)) + /* to query card if 1.8V signalling is supported */ + host->ocr |= R4_18V_PRESENT; + err = mmc_sdio_init_card(host, host->ocr, NULL, 0); if (err) { if (err == -EAGAIN) { diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c index 16a1c0b6f264..324235105519 100644 --- a/drivers/mmc/core/slot-gpio.c +++ b/drivers/mmc/core/slot-gpio.c @@ -92,6 +92,20 @@ int mmc_gpio_get_cd(struct mmc_host *host) } EXPORT_SYMBOL(mmc_gpio_get_cd); +/** + * mmc_gpio_request_ro - request a gpio for write-protection + * @host: mmc host + * @gpio: gpio number requested + * + * As devm_* managed functions are used in mmc_gpio_request_ro(), client + * drivers do not need to explicitly call mmc_gpio_free_ro() for freeing up, + * if the requesting and freeing are only needed at probing and unbinding time + * for once. However, if client drivers do something special like runtime + * switching for write-protection, they are responsible for calling + * mmc_gpio_request_ro() and mmc_gpio_free_ro() as a pair on their own. + * + * Returns zero on success, else an error. + */ int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio) { struct mmc_gpio *ctx; @@ -106,7 +120,8 @@ int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio) ctx = host->slot.handler_priv; - ret = gpio_request_one(gpio, GPIOF_DIR_IN, ctx->ro_label); + ret = devm_gpio_request_one(&host->class_dev, gpio, GPIOF_DIR_IN, + ctx->ro_label); if (ret < 0) return ret; @@ -116,6 +131,20 @@ int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio) } EXPORT_SYMBOL(mmc_gpio_request_ro); +/** + * mmc_gpio_request_cd - request a gpio for card-detection + * @host: mmc host + * @gpio: gpio number requested + * + * As devm_* managed functions are used in mmc_gpio_request_cd(), client + * drivers do not need to explicitly call mmc_gpio_free_cd() for freeing up, + * if the requesting and freeing are only needed at probing and unbinding time + * for once. However, if client drivers do something special like runtime + * switching for card-detection, they are responsible for calling + * mmc_gpio_request_cd() and mmc_gpio_free_cd() as a pair on their own. + * + * Returns zero on success, else an error. + */ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio) { struct mmc_gpio *ctx; @@ -128,7 +157,8 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio) ctx = host->slot.handler_priv; - ret = gpio_request_one(gpio, GPIOF_DIR_IN, ctx->cd_label); + ret = devm_gpio_request_one(&host->class_dev, gpio, GPIOF_DIR_IN, + ctx->cd_label); if (ret < 0) /* * don't bother freeing memory. It might still get used by other @@ -146,7 +176,8 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio) irq = -EINVAL; if (irq >= 0) { - ret = request_threaded_irq(irq, NULL, mmc_gpio_cd_irqt, + ret = devm_request_threaded_irq(&host->class_dev, irq, + NULL, mmc_gpio_cd_irqt, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, ctx->cd_label, host); if (ret < 0) @@ -164,6 +195,13 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio) } EXPORT_SYMBOL(mmc_gpio_request_cd); +/** + * mmc_gpio_free_ro - free the write-protection gpio + * @host: mmc host + * + * It's provided only for cases that client drivers need to manually free + * up the write-protection gpio requested by mmc_gpio_request_ro(). + */ void mmc_gpio_free_ro(struct mmc_host *host) { struct mmc_gpio *ctx = host->slot.handler_priv; @@ -175,10 +213,17 @@ void mmc_gpio_free_ro(struct mmc_host *host) gpio = ctx->ro_gpio; ctx->ro_gpio = -EINVAL; - gpio_free(gpio); + devm_gpio_free(&host->class_dev, gpio); } EXPORT_SYMBOL(mmc_gpio_free_ro); +/** + * mmc_gpio_free_cd - free the card-detection gpio + * @host: mmc host + * + * It's provided only for cases that client drivers need to manually free + * up the card-detection gpio requested by mmc_gpio_request_cd(). + */ void mmc_gpio_free_cd(struct mmc_host *host) { struct mmc_gpio *ctx = host->slot.handler_priv; @@ -188,13 +233,13 @@ void mmc_gpio_free_cd(struct mmc_host *host) return; if (host->slot.cd_irq >= 0) { - free_irq(host->slot.cd_irq, host); + devm_free_irq(&host->class_dev, host->slot.cd_irq, host); host->slot.cd_irq = -EINVAL; } gpio = ctx->cd_gpio; ctx->cd_gpio = -EINVAL; - gpio_free(gpio); + devm_gpio_free(&host->class_dev, gpio); } EXPORT_SYMBOL(mmc_gpio_free_cd); diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 3be8b94d7914..d88219e1d86e 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -238,6 +238,17 @@ config MMC_SDHCI_S3C_DMA YMMV. +config MMC_SDHCI_BCM2835 + tristate "SDHCI platform support for the BCM2835 SD/MMC Controller" + depends on ARCH_BCM2835 + depends on MMC_SDHCI_PLTFM + select MMC_SDHCI_IO_ACCESSORS + help + This selects the BCM2835 SD/MMC controller. If you have a BCM2835 + platform with SD or MMC devices, say Y or M here. + + If unsure, say N. + config MMC_OMAP tristate "TI OMAP Multimedia Card Interface support" depends on ARCH_OMAP @@ -361,6 +372,13 @@ config MMC_DAVINCI If you have an DAVINCI board with a Multimedia Card slot, say Y or M here. If unsure, say N. +config MMC_GOLDFISH + tristate "goldfish qemu Multimedia Card Interface support" + depends on GOLDFISH + help + This selects the Goldfish Multimedia card Interface emulation + found on the Goldfish Android virtual device emulation. + config MMC_SPI tristate "MMC/SD/SDIO over SPI" depends on SPI_MASTER && !HIGHMEM && HAS_DMA diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index e4e218c930bd..c380e3cf0a3b 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -23,6 +23,7 @@ obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o obj-$(CONFIG_MMC_MSM) += msm_sdcc.o obj-$(CONFIG_MMC_MVSDIO) += mvsdio.o obj-$(CONFIG_MMC_DAVINCI) += davinci_mmc.o +obj-$(CONFIG_MMC_GOLDFISH) += android-goldfish.o obj-$(CONFIG_MMC_SPI) += mmc_spi.o ifeq ($(CONFIG_OF),y) obj-$(CONFIG_MMC_SPI) += of_mmc_spi.o @@ -58,6 +59,7 @@ obj-$(CONFIG_MMC_SDHCI_DOVE) += sdhci-dove.o obj-$(CONFIG_MMC_SDHCI_TEGRA) += sdhci-tegra.o obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o +obj-$(CONFIG_MMC_SDHCI_BCM2835) += sdhci-bcm2835.o ifeq ($(CONFIG_CB710_DEBUG),y) CFLAGS-cb710-mmc += -DDEBUG diff --git a/drivers/mmc/host/android-goldfish.c b/drivers/mmc/host/android-goldfish.c new file mode 100644 index 000000000000..ef3aef0f376d --- /dev/null +++ b/drivers/mmc/host/android-goldfish.c @@ -0,0 +1,570 @@ +/* + * Copyright 2007, Google Inc. + * Copyright 2012, Intel Inc. + * + * based on omap.c driver, which was + * Copyright (C) 2004 Nokia Corporation + * Written by Tuukka Tikkanen and Juha Yrjölä <juha.yrjola@nokia.com> + * Misc hacks here and there by Tony Lindgren <tony@atomide.com> + * Other hacks (DMA, SD, etc) by David Brownell + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/major.h> + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/interrupt.h> + +#include <linux/kernel.h> +#include <linux/fs.h> +#include <linux/errno.h> +#include <linux/hdreg.h> +#include <linux/kdev_t.h> +#include <linux/blkdev.h> +#include <linux/mutex.h> +#include <linux/scatterlist.h> +#include <linux/mmc/mmc.h> +#include <linux/mmc/sdio.h> +#include <linux/mmc/host.h> +#include <linux/mmc/card.h> + +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/dma-mapping.h> +#include <linux/delay.h> +#include <linux/spinlock.h> +#include <linux/timer.h> +#include <linux/clk.h> + +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/scatterlist.h> + +#include <asm/types.h> +#include <asm/io.h> +#include <asm/uaccess.h> + +#define DRIVER_NAME "goldfish_mmc" + +#define BUFFER_SIZE 16384 + +#define GOLDFISH_MMC_READ(host, addr) (readl(host->reg_base + addr)) +#define GOLDFISH_MMC_WRITE(host, addr, x) (writel(x, host->reg_base + addr)) + +enum { + /* status register */ + MMC_INT_STATUS = 0x00, + /* set this to enable IRQ */ + MMC_INT_ENABLE = 0x04, + /* set this to specify buffer address */ + MMC_SET_BUFFER = 0x08, + + /* MMC command number */ + MMC_CMD = 0x0C, + + /* MMC argument */ + MMC_ARG = 0x10, + + /* MMC response (or R2 bits 0 - 31) */ + MMC_RESP_0 = 0x14, + + /* MMC R2 response bits 32 - 63 */ + MMC_RESP_1 = 0x18, + + /* MMC R2 response bits 64 - 95 */ + MMC_RESP_2 = 0x1C, + + /* MMC R2 response bits 96 - 127 */ + MMC_RESP_3 = 0x20, + + MMC_BLOCK_LENGTH = 0x24, + MMC_BLOCK_COUNT = 0x28, + + /* MMC state flags */ + MMC_STATE = 0x2C, + + /* MMC_INT_STATUS bits */ + + MMC_STAT_END_OF_CMD = 1U << 0, + MMC_STAT_END_OF_DATA = 1U << 1, + MMC_STAT_STATE_CHANGE = 1U << 2, + MMC_STAT_CMD_TIMEOUT = 1U << 3, + + /* MMC_STATE bits */ + MMC_STATE_INSERTED = 1U << 0, + MMC_STATE_READ_ONLY = 1U << 1, +}; + +/* + * Command types + */ +#define OMAP_MMC_CMDTYPE_BC 0 +#define OMAP_MMC_CMDTYPE_BCR 1 +#define OMAP_MMC_CMDTYPE_AC 2 +#define OMAP_MMC_CMDTYPE_ADTC 3 + + +struct goldfish_mmc_host { + struct mmc_request *mrq; + struct mmc_command *cmd; + struct mmc_data *data; + struct mmc_host *mmc; + struct device *dev; + unsigned char id; /* 16xx chips have 2 MMC blocks */ + void __iomem *virt_base; + unsigned int phys_base; + int irq; + unsigned char bus_mode; + unsigned char hw_bus_mode; + + unsigned int sg_len; + unsigned dma_done:1; + unsigned dma_in_use:1; + + void __iomem *reg_base; +}; + +static inline int +goldfish_mmc_cover_is_open(struct goldfish_mmc_host *host) +{ + return 0; +} + +static ssize_t +goldfish_mmc_show_cover_switch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct goldfish_mmc_host *host = dev_get_drvdata(dev); + + return sprintf(buf, "%s\n", goldfish_mmc_cover_is_open(host) ? "open" : + "closed"); +} + +static DEVICE_ATTR(cover_switch, S_IRUGO, goldfish_mmc_show_cover_switch, NULL); + +static void +goldfish_mmc_start_command(struct goldfish_mmc_host *host, struct mmc_command *cmd) +{ + u32 cmdreg; + u32 resptype; + u32 cmdtype; + + host->cmd = cmd; + + resptype = 0; + cmdtype = 0; + + /* Our hardware needs to know exact type */ + switch (mmc_resp_type(cmd)) { + case MMC_RSP_NONE: + break; + case MMC_RSP_R1: + case MMC_RSP_R1B: + /* resp 1, 1b, 6, 7 */ + resptype = 1; + break; + case MMC_RSP_R2: + resptype = 2; + break; + case MMC_RSP_R3: + resptype = 3; + break; + default: + dev_err(mmc_dev(host->mmc), + "Invalid response type: %04x\n", mmc_resp_type(cmd)); + break; + } + + if (mmc_cmd_type(cmd) == MMC_CMD_ADTC) + cmdtype = OMAP_MMC_CMDTYPE_ADTC; + else if (mmc_cmd_type(cmd) == MMC_CMD_BC) + cmdtype = OMAP_MMC_CMDTYPE_BC; + else if (mmc_cmd_type(cmd) == MMC_CMD_BCR) + cmdtype = OMAP_MMC_CMDTYPE_BCR; + else + cmdtype = OMAP_MMC_CMDTYPE_AC; + + cmdreg = cmd->opcode | (resptype << 8) | (cmdtype << 12); + + if (host->bus_mode == MMC_BUSMODE_OPENDRAIN) + cmdreg |= 1 << 6; + + if (cmd->flags & MMC_RSP_BUSY) + cmdreg |= 1 << 11; + + if (host->data && !(host->data->flags & MMC_DATA_WRITE)) + cmdreg |= 1 << 15; + + GOLDFISH_MMC_WRITE(host, MMC_ARG, cmd->arg); + GOLDFISH_MMC_WRITE(host, MMC_CMD, cmdreg); +} + +static void goldfish_mmc_xfer_done(struct goldfish_mmc_host *host, + struct mmc_data *data) +{ + if (host->dma_in_use) { + enum dma_data_direction dma_data_dir; + + if (data->flags & MMC_DATA_WRITE) + dma_data_dir = DMA_TO_DEVICE; + else + dma_data_dir = DMA_FROM_DEVICE; + + if (dma_data_dir == DMA_FROM_DEVICE) { + /* + * We don't really have DMA, so we need + * to copy from our platform driver buffer + */ + uint8_t *dest = (uint8_t *)sg_virt(data->sg); + memcpy(dest, host->virt_base, data->sg->length); + } + host->data->bytes_xfered += data->sg->length; + dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len, + dma_data_dir); + } + + host->data = NULL; + host->sg_len = 0; + + /* + * NOTE: MMC layer will sometimes poll-wait CMD13 next, issuing + * dozens of requests until the card finishes writing data. + * It'd be cheaper to just wait till an EOFB interrupt arrives... + */ + + if (!data->stop) { + host->mrq = NULL; + mmc_request_done(host->mmc, data->mrq); + return; + } + + goldfish_mmc_start_command(host, data->stop); +} + +static void goldfish_mmc_end_of_data(struct goldfish_mmc_host *host, + struct mmc_data *data) +{ + if (!host->dma_in_use) { + goldfish_mmc_xfer_done(host, data); + return; + } + if (host->dma_done) + goldfish_mmc_xfer_done(host, data); +} + +static void goldfish_mmc_cmd_done(struct goldfish_mmc_host *host, + struct mmc_command *cmd) +{ + host->cmd = NULL; + if (cmd->flags & MMC_RSP_PRESENT) { + if (cmd->flags & MMC_RSP_136) { + /* response type 2 */ + cmd->resp[3] = + GOLDFISH_MMC_READ(host, MMC_RESP_0); + cmd->resp[2] = + GOLDFISH_MMC_READ(host, MMC_RESP_1); + cmd->resp[1] = + GOLDFISH_MMC_READ(host, MMC_RESP_2); + cmd->resp[0] = + GOLDFISH_MMC_READ(host, MMC_RESP_3); + } else { + /* response types 1, 1b, 3, 4, 5, 6 */ + cmd->resp[0] = + GOLDFISH_MMC_READ(host, MMC_RESP_0); + } + } + + if (host->data == NULL || cmd->error) { + host->mrq = NULL; + mmc_request_done(host->mmc, cmd->mrq); + } +} + +static irqreturn_t goldfish_mmc_irq(int irq, void *dev_id) +{ + struct goldfish_mmc_host *host = (struct goldfish_mmc_host *)dev_id; + u16 status; + int end_command = 0; + int end_transfer = 0; + int transfer_error = 0; + int state_changed = 0; + int cmd_timeout = 0; + + while ((status = GOLDFISH_MMC_READ(host, MMC_INT_STATUS)) != 0) { + GOLDFISH_MMC_WRITE(host, MMC_INT_STATUS, status); + + if (status & MMC_STAT_END_OF_CMD) + end_command = 1; + + if (status & MMC_STAT_END_OF_DATA) + end_transfer = 1; + + if (status & MMC_STAT_STATE_CHANGE) + state_changed = 1; + + if (status & MMC_STAT_CMD_TIMEOUT) { + end_command = 0; + cmd_timeout = 1; + } + } + + if (cmd_timeout) { + struct mmc_request *mrq = host->mrq; + mrq->cmd->error = -ETIMEDOUT; + host->mrq = NULL; + mmc_request_done(host->mmc, mrq); + } + + if (end_command) + goldfish_mmc_cmd_done(host, host->cmd); + + if (transfer_error) + goldfish_mmc_xfer_done(host, host->data); + else if (end_transfer) { + host->dma_done = 1; + goldfish_mmc_end_of_data(host, host->data); + } else if (host->data != NULL) { + /* + * WORKAROUND -- after porting this driver from 2.6 to 3.4, + * during device initialization, cases where host->data is + * non-null but end_transfer is false would occur. Doing + * nothing in such cases results in no further interrupts, + * and initialization failure. + * TODO -- find the real cause. + */ + host->dma_done = 1; + goldfish_mmc_end_of_data(host, host->data); + } + + if (state_changed) { + u32 state = GOLDFISH_MMC_READ(host, MMC_STATE); + pr_info("%s: Card detect now %d\n", __func__, + (state & MMC_STATE_INSERTED)); + mmc_detect_change(host->mmc, 0); + } + + if (!end_command && !end_transfer && + !transfer_error && !state_changed && !cmd_timeout) { + status = GOLDFISH_MMC_READ(host, MMC_INT_STATUS); + dev_info(mmc_dev(host->mmc),"spurious irq 0x%04x\n", status); + if (status != 0) { + GOLDFISH_MMC_WRITE(host, MMC_INT_STATUS, status); + GOLDFISH_MMC_WRITE(host, MMC_INT_ENABLE, 0); + } + } + + return IRQ_HANDLED; +} + +static void goldfish_mmc_prepare_data(struct goldfish_mmc_host *host, + struct mmc_request *req) +{ + struct mmc_data *data = req->data; + int block_size; + unsigned sg_len; + enum dma_data_direction dma_data_dir; + + host->data = data; + if (data == NULL) { + GOLDFISH_MMC_WRITE(host, MMC_BLOCK_LENGTH, 0); + GOLDFISH_MMC_WRITE(host, MMC_BLOCK_COUNT, 0); + host->dma_in_use = 0; + return; + } + + block_size = data->blksz; + + GOLDFISH_MMC_WRITE(host, MMC_BLOCK_COUNT, data->blocks - 1); + GOLDFISH_MMC_WRITE(host, MMC_BLOCK_LENGTH, block_size - 1); + + /* + * Cope with calling layer confusion; it issues "single + * block" writes using multi-block scatterlists. + */ + sg_len = (data->blocks == 1) ? 1 : data->sg_len; + + if (data->flags & MMC_DATA_WRITE) + dma_data_dir = DMA_TO_DEVICE; + else + dma_data_dir = DMA_FROM_DEVICE; + + host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg, + sg_len, dma_data_dir); + host->dma_done = 0; + host->dma_in_use = 1; + + if (dma_data_dir == DMA_TO_DEVICE) { + /* + * We don't really have DMA, so we need to copy to our + * platform driver buffer + */ + const uint8_t *src = (uint8_t *)sg_virt(data->sg); + memcpy(host->virt_base, src, data->sg->length); + } +} + +static void goldfish_mmc_request(struct mmc_host *mmc, struct mmc_request *req) +{ + struct goldfish_mmc_host *host = mmc_priv(mmc); + + WARN_ON(host->mrq != NULL); + + host->mrq = req; + goldfish_mmc_prepare_data(host, req); + goldfish_mmc_start_command(host, req->cmd); + + /* + * This is to avoid accidentally being detected as an SDIO card + * in mmc_attach_sdio(). + */ + if (req->cmd->opcode == SD_IO_SEND_OP_COND && + req->cmd->flags == (MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR)) + req->cmd->error = -EINVAL; +} + +static void goldfish_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct goldfish_mmc_host *host = mmc_priv(mmc); + + host->bus_mode = ios->bus_mode; + host->hw_bus_mode = host->bus_mode; +} + +static int goldfish_mmc_get_ro(struct mmc_host *mmc) +{ + uint32_t state; + struct goldfish_mmc_host *host = mmc_priv(mmc); + + state = GOLDFISH_MMC_READ(host, MMC_STATE); + return ((state & MMC_STATE_READ_ONLY) != 0); +} + +static const struct mmc_host_ops goldfish_mmc_ops = { + .request = goldfish_mmc_request, + .set_ios = goldfish_mmc_set_ios, + .get_ro = goldfish_mmc_get_ro, +}; + +static int goldfish_mmc_probe(struct platform_device *pdev) +{ + struct mmc_host *mmc; + struct goldfish_mmc_host *host = NULL; + struct resource *res; + int ret = 0; + int irq; + dma_addr_t buf_addr; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + irq = platform_get_irq(pdev, 0); + if (res == NULL || irq < 0) + return -ENXIO; + + mmc = mmc_alloc_host(sizeof(struct goldfish_mmc_host), &pdev->dev); + if (mmc == NULL) { + ret = -ENOMEM; + goto err_alloc_host_failed; + } + + host = mmc_priv(mmc); + host->mmc = mmc; + + pr_err("mmc: Mapping %lX to %lX\n", (long)res->start, (long)res->end); + host->reg_base = ioremap(res->start, res->end - res->start + 1); + if (host->reg_base == NULL) { + ret = -ENOMEM; + goto ioremap_failed; + } + host->virt_base = dma_alloc_coherent(&pdev->dev, BUFFER_SIZE, + &buf_addr, GFP_KERNEL); + + if (host->virt_base == 0) { + ret = -ENOMEM; + goto dma_alloc_failed; + } + host->phys_base = buf_addr; + + host->id = pdev->id; + host->irq = irq; + + mmc->ops = &goldfish_mmc_ops; + mmc->f_min = 400000; + mmc->f_max = 24000000; + mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; + mmc->caps = MMC_CAP_4_BIT_DATA; + + /* Use scatterlist DMA to reduce per-transfer costs. + * NOTE max_seg_size assumption that small blocks aren't + * normally used (except e.g. for reading SD registers). + */ + mmc->max_segs = 32; + mmc->max_blk_size = 2048; /* MMC_BLOCK_LENGTH is 11 bits (+1) */ + mmc->max_blk_count = 2048; /* MMC_BLOCK_COUNT is 11 bits (+1) */ + mmc->max_req_size = BUFFER_SIZE; + mmc->max_seg_size = mmc->max_req_size; + + ret = request_irq(host->irq, goldfish_mmc_irq, 0, DRIVER_NAME, host); + if (ret) { + dev_err(&pdev->dev, "Failed IRQ Adding goldfish MMC\n"); + goto err_request_irq_failed; + } + + host->dev = &pdev->dev; + platform_set_drvdata(pdev, host); + + ret = device_create_file(&pdev->dev, &dev_attr_cover_switch); + if (ret) + dev_warn(mmc_dev(host->mmc), + "Unable to create sysfs attributes\n"); + + GOLDFISH_MMC_WRITE(host, MMC_SET_BUFFER, host->phys_base); + GOLDFISH_MMC_WRITE(host, MMC_INT_ENABLE, + MMC_STAT_END_OF_CMD | MMC_STAT_END_OF_DATA | + MMC_STAT_STATE_CHANGE | MMC_STAT_CMD_TIMEOUT); + + mmc_add_host(mmc); + return 0; + +err_request_irq_failed: + dma_free_coherent(&pdev->dev, BUFFER_SIZE, host->virt_base, + host->phys_base); +dma_alloc_failed: + iounmap(host->reg_base); +ioremap_failed: + mmc_free_host(host->mmc); +err_alloc_host_failed: + return ret; +} + +static int goldfish_mmc_remove(struct platform_device *pdev) +{ + struct goldfish_mmc_host *host = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + + BUG_ON(host == NULL); + + mmc_remove_host(host->mmc); + free_irq(host->irq, host); + dma_free_coherent(&pdev->dev, BUFFER_SIZE, host->virt_base, host->phys_base); + iounmap(host->reg_base); + mmc_free_host(host->mmc); + return 0; +} + +static struct platform_driver goldfish_mmc_driver = { + .probe = goldfish_mmc_probe, + .remove = goldfish_mmc_remove, + .driver = { + .name = DRIVER_NAME, + }, +}; + +module_platform_driver(goldfish_mmc_driver); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c index 4d50da618166..72fd0f2c9013 100644 --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -175,16 +175,6 @@ static int dw_mci_exynos_setup_bus(struct dw_mci *host, } } - gpio = of_get_named_gpio(slot_np, "wp-gpios", 0); - if (gpio_is_valid(gpio)) { - if (devm_gpio_request(host->dev, gpio, "dw-mci-wp")) - dev_info(host->dev, "gpio [%d] request failed\n", - gpio); - } else { - dev_info(host->dev, "wp gpio not available"); - host->pdata->quirks |= DW_MCI_QUIRK_NO_WRITE_PROTECT; - } - if (host->pdata->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION) return 0; diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 323c5022c2ca..60063ccb4c4b 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -34,6 +34,7 @@ #include <linux/regulator/consumer.h> #include <linux/workqueue.h> #include <linux/of.h> +#include <linux/of_gpio.h> #include "dw_mmc.h" @@ -74,6 +75,8 @@ struct idmac_desc { * struct dw_mci_slot - MMC slot state * @mmc: The mmc_host representing this slot. * @host: The MMC controller this slot is using. + * @quirks: Slot-level quirks (DW_MCI_SLOT_QUIRK_XXX) + * @wp_gpio: If gpio_is_valid() we'll use this to read write protect. * @ctype: Card type for this slot. * @mrq: mmc_request currently being processed or waiting to be * processed, or NULL when the slot is idle. @@ -88,6 +91,9 @@ struct dw_mci_slot { struct mmc_host *mmc; struct dw_mci *host; + int quirks; + int wp_gpio; + u32 ctype; struct mmc_request *mrq; @@ -825,10 +831,12 @@ static int dw_mci_get_ro(struct mmc_host *mmc) struct dw_mci_board *brd = slot->host->pdata; /* Use platform get_ro function, else try on board write protect */ - if (brd->quirks & DW_MCI_QUIRK_NO_WRITE_PROTECT) + if (slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT) read_only = 0; else if (brd->get_ro) read_only = brd->get_ro(slot->id); + else if (gpio_is_valid(slot->wp_gpio)) + read_only = gpio_get_value(slot->wp_gpio); else read_only = mci_readl(slot->host, WRTPRT) & (1 << slot->id) ? 1 : 0; @@ -1785,6 +1793,30 @@ static struct device_node *dw_mci_of_find_slot_node(struct device *dev, u8 slot) return NULL; } +static struct dw_mci_of_slot_quirks { + char *quirk; + int id; +} of_slot_quirks[] = { + { + .quirk = "disable-wp", + .id = DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT, + }, +}; + +static int dw_mci_of_get_slot_quirks(struct device *dev, u8 slot) +{ + struct device_node *np = dw_mci_of_find_slot_node(dev, slot); + int quirks = 0; + int idx; + + /* get quirks */ + for (idx = 0; idx < ARRAY_SIZE(of_slot_quirks); idx++) + if (of_get_property(np, of_slot_quirks[idx].quirk, NULL)) + quirks |= of_slot_quirks[idx].id; + + return quirks; +} + /* find out bus-width for a given slot */ static u32 dw_mci_of_get_bus_wd(struct device *dev, u8 slot) { @@ -1799,7 +1831,34 @@ static u32 dw_mci_of_get_bus_wd(struct device *dev, u8 slot) " as 1\n"); return bus_wd; } + +/* find the write protect gpio for a given slot; or -1 if none specified */ +static int dw_mci_of_get_wp_gpio(struct device *dev, u8 slot) +{ + struct device_node *np = dw_mci_of_find_slot_node(dev, slot); + int gpio; + + if (!np) + return -EINVAL; + + gpio = of_get_named_gpio(np, "wp-gpios", 0); + + /* Having a missing entry is valid; return silently */ + if (!gpio_is_valid(gpio)) + return -EINVAL; + + if (devm_gpio_request(dev, gpio, "dw-mci-wp")) { + dev_warn(dev, "gpio [%d] request failed\n", gpio); + return -EINVAL; + } + + return gpio; +} #else /* CONFIG_OF */ +static int dw_mci_of_get_slot_quirks(struct device *dev, u8 slot) +{ + return 0; +} static u32 dw_mci_of_get_bus_wd(struct device *dev, u8 slot) { return 1; @@ -1808,6 +1867,10 @@ static struct device_node *dw_mci_of_find_slot_node(struct device *dev, u8 slot) { return NULL; } +static int dw_mci_of_get_wp_gpio(struct device *dev, u8 slot) +{ + return -EINVAL; +} #endif /* CONFIG_OF */ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) @@ -1828,6 +1891,8 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) slot->host = host; host->slot[id] = slot; + slot->quirks = dw_mci_of_get_slot_quirks(host->dev, slot->id); + mmc->ops = &dw_mci_ops; mmc->f_min = DIV_ROUND_UP(host->bus_hz, 510); mmc->f_max = host->bus_hz; @@ -1923,6 +1988,8 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) else clear_bit(DW_MMC_CARD_PRESENT, &slot->flags); + slot->wp_gpio = dw_mci_of_get_wp_gpio(host->dev, slot->id); + mmc_add_host(mmc); #if defined(CONFIG_DEBUG_FS) diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c index f8dd36102949..145cdaf000d1 100644 --- a/drivers/mmc/host/mvsdio.c +++ b/drivers/mmc/host/mvsdio.c @@ -21,7 +21,11 @@ #include <linux/irq.h> #include <linux/clk.h> #include <linux/gpio.h> +#include <linux/of_gpio.h> +#include <linux/of_irq.h> #include <linux/mmc/host.h> +#include <linux/mmc/slot-gpio.h> +#include <linux/pinctrl/consumer.h> #include <asm/sizes.h> #include <asm/unaligned.h> @@ -51,8 +55,6 @@ struct mvsd_host { struct mmc_host *mmc; struct device *dev; struct clk *clk; - int gpio_card_detect; - int gpio_write_protect; }; #define mvsd_write(offs, val) writel(val, iobase + (offs)) @@ -538,13 +540,6 @@ static void mvsd_timeout_timer(unsigned long data) mmc_request_done(host->mmc, mrq); } -static irqreturn_t mvsd_card_detect_irq(int irq, void *dev) -{ - struct mvsd_host *host = dev; - mmc_detect_change(host->mmc, msecs_to_jiffies(100)); - return IRQ_HANDLED; -} - static void mvsd_enable_sdio_irq(struct mmc_host *mmc, int enable) { struct mvsd_host *host = mmc_priv(mmc); @@ -564,20 +559,6 @@ static void mvsd_enable_sdio_irq(struct mmc_host *mmc, int enable) spin_unlock_irqrestore(&host->lock, flags); } -static int mvsd_get_ro(struct mmc_host *mmc) -{ - struct mvsd_host *host = mmc_priv(mmc); - - if (host->gpio_write_protect) - return gpio_get_value(host->gpio_write_protect); - - /* - * Board doesn't support read only detection; let the mmc core - * decide what to do. - */ - return -ENOSYS; -} - static void mvsd_power_up(struct mvsd_host *host) { void __iomem *iobase = host->base; @@ -674,7 +655,7 @@ static void mvsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) static const struct mmc_host_ops mvsd_ops = { .request = mvsd_request, - .get_ro = mvsd_get_ro, + .get_ro = mmc_gpio_get_ro, .set_ios = mvsd_set_ios, .enable_sdio_irq = mvsd_enable_sdio_irq, }; @@ -703,17 +684,18 @@ mv_conf_mbus_windows(struct mvsd_host *host, static int __init mvsd_probe(struct platform_device *pdev) { + struct device_node *np = pdev->dev.of_node; struct mmc_host *mmc = NULL; struct mvsd_host *host = NULL; - const struct mvsdio_platform_data *mvsd_data; const struct mbus_dram_target_info *dram; struct resource *r; int ret, irq; + int gpio_card_detect, gpio_write_protect; + struct pinctrl *pinctrl; r = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); - mvsd_data = pdev->dev.platform_data; - if (!r || irq < 0 || !mvsd_data) + if (!r || irq < 0) return -ENXIO; mmc = mmc_alloc_host(sizeof(struct mvsd_host), &pdev->dev); @@ -725,8 +707,43 @@ static int __init mvsd_probe(struct platform_device *pdev) host = mmc_priv(mmc); host->mmc = mmc; host->dev = &pdev->dev; - host->base_clock = mvsd_data->clock / 2; - host->clk = ERR_PTR(-EINVAL); + + pinctrl = devm_pinctrl_get_select_default(&pdev->dev); + if (IS_ERR(pinctrl)) + dev_warn(&pdev->dev, "no pins associated\n"); + + /* + * Some non-DT platforms do not pass a clock, and the clock + * frequency is passed through platform_data. On DT platforms, + * a clock must always be passed, even if there is no gatable + * clock associated to the SDIO interface (it can simply be a + * fixed rate clock). + */ + host->clk = devm_clk_get(&pdev->dev, NULL); + if (!IS_ERR(host->clk)) + clk_prepare_enable(host->clk); + + if (np) { + if (IS_ERR(host->clk)) { + dev_err(&pdev->dev, "DT platforms must have a clock associated\n"); + ret = -EINVAL; + goto out; + } + + host->base_clock = clk_get_rate(host->clk) / 2; + gpio_card_detect = of_get_named_gpio(np, "cd-gpios", 0); + gpio_write_protect = of_get_named_gpio(np, "wp-gpios", 0); + } else { + const struct mvsdio_platform_data *mvsd_data; + mvsd_data = pdev->dev.platform_data; + if (!mvsd_data) { + ret = -ENXIO; + goto out; + } + host->base_clock = mvsd_data->clock / 2; + gpio_card_detect = mvsd_data->gpio_card_detect; + gpio_write_protect = mvsd_data->gpio_write_protect; + } mmc->ops = &mvsd_ops; @@ -765,43 +782,14 @@ static int __init mvsd_probe(struct platform_device *pdev) goto out; } - /* Not all platforms can gate the clock, so it is not - an error if the clock does not exists. */ - host->clk = devm_clk_get(&pdev->dev, NULL); - if (!IS_ERR(host->clk)) - clk_prepare_enable(host->clk); - - if (mvsd_data->gpio_card_detect) { - ret = devm_gpio_request_one(&pdev->dev, - mvsd_data->gpio_card_detect, - GPIOF_IN, DRIVER_NAME " cd"); - if (ret == 0) { - irq = gpio_to_irq(mvsd_data->gpio_card_detect); - ret = devm_request_irq(&pdev->dev, irq, - mvsd_card_detect_irq, - IRQ_TYPE_EDGE_RISING | - IRQ_TYPE_EDGE_FALLING, - DRIVER_NAME " cd", host); - if (ret == 0) - host->gpio_card_detect = - mvsd_data->gpio_card_detect; - else - devm_gpio_free(&pdev->dev, - mvsd_data->gpio_card_detect); - } - } - if (!host->gpio_card_detect) + if (gpio_is_valid(gpio_card_detect)) { + ret = mmc_gpio_request_cd(mmc, gpio_card_detect); + if (ret) + goto out; + } else mmc->caps |= MMC_CAP_NEEDS_POLL; - if (mvsd_data->gpio_write_protect) { - ret = devm_gpio_request_one(&pdev->dev, - mvsd_data->gpio_write_protect, - GPIOF_IN, DRIVER_NAME " wp"); - if (ret == 0) { - host->gpio_write_protect = - mvsd_data->gpio_write_protect; - } - } + mmc_gpio_request_ro(mmc, gpio_write_protect); setup_timer(&host->timer, mvsd_timeout_timer, (unsigned long)host); platform_set_drvdata(pdev, mmc); @@ -811,15 +799,17 @@ static int __init mvsd_probe(struct platform_device *pdev) pr_notice("%s: %s driver initialized, ", mmc_hostname(mmc), DRIVER_NAME); - if (host->gpio_card_detect) + if (!(mmc->caps & MMC_CAP_NEEDS_POLL)) printk("using GPIO %d for card detection\n", - host->gpio_card_detect); + gpio_card_detect); else printk("lacking card detect (fall back to polling)\n"); return 0; out: if (mmc) { + mmc_gpio_free_cd(mmc); + mmc_gpio_free_ro(mmc); if (!IS_ERR(host->clk)) clk_disable_unprepare(host->clk); mmc_free_host(mmc); @@ -834,6 +824,8 @@ static int __exit mvsd_remove(struct platform_device *pdev) struct mvsd_host *host = mmc_priv(mmc); + mmc_gpio_free_cd(mmc); + mmc_gpio_free_ro(mmc); mmc_remove_host(mmc); del_timer_sync(&host->timer); mvsd_power_down(host); @@ -873,12 +865,19 @@ static int mvsd_resume(struct platform_device *dev) #define mvsd_resume NULL #endif +static const struct of_device_id mvsdio_dt_ids[] = { + { .compatible = "marvell,orion-sdio" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, mvsdio_dt_ids); + static struct platform_driver mvsd_driver = { .remove = __exit_p(mvsd_remove), .suspend = mvsd_suspend, .resume = mvsd_resume, .driver = { .name = DRIVER_NAME, + .of_match_table = mvsdio_dt_ids, }, }; diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 5b665551a6f3..4efe3021b217 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -354,7 +354,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host) struct dma_async_tx_descriptor *desc; struct scatterlist *sgl = data->sg, *sg; unsigned int sg_len = data->sg_len; - int i; + unsigned int i; unsigned short dma_data_dir, timeout; enum dma_transfer_direction slave_dirn; @@ -804,3 +804,4 @@ module_platform_driver(mxs_mmc_driver); MODULE_DESCRIPTION("FREESCALE MXS MMC peripheral"); MODULE_AUTHOR("Freescale Semiconductor"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRIVER_NAME); diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c index 1534b582c419..d720b5e05b9c 100644 --- a/drivers/mmc/host/of_mmc_spi.c +++ b/drivers/mmc/host/of_mmc_spi.c @@ -146,7 +146,7 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi) oms->pdata.get_ro = of_mmc_spi_get_ro; oms->detect_irq = irq_of_parse_and_map(np, 0); - if (oms->detect_irq != NO_IRQ) { + if (oms->detect_irq != 0) { oms->pdata.init = of_mmc_spi_init; oms->pdata.exit = of_mmc_spi_exit; } else { diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c index 468c92303167..f981f7d1f6e3 100644 --- a/drivers/mmc/host/rtsx_pci_sdmmc.c +++ b/drivers/mmc/host/rtsx_pci_sdmmc.c @@ -1097,11 +1097,6 @@ static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios) voltage = OUTPUT_1V8; if (voltage == OUTPUT_1V8) { - err = rtsx_pci_write_register(pcr, - SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_B); - if (err < 0) - goto out; - err = sd_wait_voltage_stable_1(host); if (err < 0) goto out; diff --git a/drivers/mmc/host/sdhci-bcm2835.c b/drivers/mmc/host/sdhci-bcm2835.c new file mode 100644 index 000000000000..8ffea05152c6 --- /dev/null +++ b/drivers/mmc/host/sdhci-bcm2835.c @@ -0,0 +1,210 @@ +/* + * BCM2835 SDHCI + * Copyright (C) 2012 Stephen Warren + * Based on U-Boot's MMC driver for the BCM2835 by Oleksandr Tymoshenko & me + * Portions of the code there were obviously based on the Linux kernel at: + * git://github.com/raspberrypi/linux.git rpi-3.6.y + * commit f5b930b "Main bcm2708 linux port" signed-off-by Dom Cobley. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/mmc/host.h> +#include "sdhci-pltfm.h" + +/* + * 400KHz is max freq for card ID etc. Use that as min card clock. We need to + * know the min to enable static calculation of max BCM2835_SDHCI_WRITE_DELAY. + */ +#define MIN_FREQ 400000 + +/* + * The Arasan has a bugette whereby it may lose the content of successive + * writes to registers that are within two SD-card clock cycles of each other + * (a clock domain crossing problem). It seems, however, that the data + * register does not have this problem, which is just as well - otherwise we'd + * have to nobble the DMA engine too. + * + * This should probably be dynamically calculated based on the actual card + * frequency. However, this is the longest we'll have to wait, and doesn't + * seem to slow access down too much, so the added complexity doesn't seem + * worth it for now. + * + * 1/MIN_FREQ is (max) time per tick of eMMC clock. + * 2/MIN_FREQ is time for two ticks. + * Multiply by 1000000 to get uS per two ticks. + * *1000000 for uSecs. + * +1 for hack rounding. + */ +#define BCM2835_SDHCI_WRITE_DELAY (((2 * 1000000) / MIN_FREQ) + 1) + +struct bcm2835_sdhci { + u32 shadow; +}; + +static void bcm2835_sdhci_writel(struct sdhci_host *host, u32 val, int reg) +{ + writel(val, host->ioaddr + reg); + + udelay(BCM2835_SDHCI_WRITE_DELAY); +} + +static inline u32 bcm2835_sdhci_readl(struct sdhci_host *host, int reg) +{ + u32 val = readl(host->ioaddr + reg); + + if (reg == SDHCI_CAPABILITIES) + val |= SDHCI_CAN_VDD_330; + + return val; +} + +static void bcm2835_sdhci_writew(struct sdhci_host *host, u16 val, int reg) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct bcm2835_sdhci *bcm2835_host = pltfm_host->priv; + u32 oldval = (reg == SDHCI_COMMAND) ? bcm2835_host->shadow : + bcm2835_sdhci_readl(host, reg & ~3); + u32 word_num = (reg >> 1) & 1; + u32 word_shift = word_num * 16; + u32 mask = 0xffff << word_shift; + u32 newval = (oldval & ~mask) | (val << word_shift); + + if (reg == SDHCI_TRANSFER_MODE) + bcm2835_host->shadow = newval; + else + bcm2835_sdhci_writel(host, newval, reg & ~3); +} + +static u16 bcm2835_sdhci_readw(struct sdhci_host *host, int reg) +{ + u32 val = bcm2835_sdhci_readl(host, (reg & ~3)); + u32 word_num = (reg >> 1) & 1; + u32 word_shift = word_num * 16; + u32 word = (val >> word_shift) & 0xffff; + + return word; +} + +static void bcm2835_sdhci_writeb(struct sdhci_host *host, u8 val, int reg) +{ + u32 oldval = bcm2835_sdhci_readl(host, reg & ~3); + u32 byte_num = reg & 3; + u32 byte_shift = byte_num * 8; + u32 mask = 0xff << byte_shift; + u32 newval = (oldval & ~mask) | (val << byte_shift); + + bcm2835_sdhci_writel(host, newval, reg & ~3); +} + +static u8 bcm2835_sdhci_readb(struct sdhci_host *host, int reg) +{ + u32 val = bcm2835_sdhci_readl(host, (reg & ~3)); + u32 byte_num = reg & 3; + u32 byte_shift = byte_num * 8; + u32 byte = (val >> byte_shift) & 0xff; + + return byte; +} + +unsigned int bcm2835_sdhci_get_min_clock(struct sdhci_host *host) +{ + return MIN_FREQ; +} + +static struct sdhci_ops bcm2835_sdhci_ops = { + .write_l = bcm2835_sdhci_writel, + .write_w = bcm2835_sdhci_writew, + .write_b = bcm2835_sdhci_writeb, + .read_l = bcm2835_sdhci_readl, + .read_w = bcm2835_sdhci_readw, + .read_b = bcm2835_sdhci_readb, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, + .get_min_clock = bcm2835_sdhci_get_min_clock, +}; + +static struct sdhci_pltfm_data bcm2835_sdhci_pdata = { + .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION | + SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK, + .ops = &bcm2835_sdhci_ops, +}; + +static int bcm2835_sdhci_probe(struct platform_device *pdev) +{ + struct sdhci_host *host; + struct bcm2835_sdhci *bcm2835_host; + struct sdhci_pltfm_host *pltfm_host; + int ret; + + host = sdhci_pltfm_init(pdev, &bcm2835_sdhci_pdata); + if (IS_ERR(host)) + return PTR_ERR(host); + + bcm2835_host = devm_kzalloc(&pdev->dev, sizeof(*bcm2835_host), + GFP_KERNEL); + if (!bcm2835_host) { + dev_err(mmc_dev(host->mmc), + "failed to allocate bcm2835_sdhci\n"); + return -ENOMEM; + } + + pltfm_host = sdhci_priv(host); + pltfm_host->priv = bcm2835_host; + + pltfm_host->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(pltfm_host->clk)) { + ret = PTR_ERR(pltfm_host->clk); + goto err; + } + + return sdhci_add_host(host); + +err: + sdhci_pltfm_free(pdev); + return ret; +} + +static int bcm2835_sdhci_remove(struct platform_device *pdev) +{ + struct sdhci_host *host = platform_get_drvdata(pdev); + int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); + + sdhci_remove_host(host, dead); + sdhci_pltfm_free(pdev); + + return 0; +} + +static const struct of_device_id bcm2835_sdhci_of_match[] = { + { .compatible = "brcm,bcm2835-sdhci" }, + { } +}; +MODULE_DEVICE_TABLE(of, bcm2835_sdhci_of_match); + +static struct platform_driver bcm2835_sdhci_driver = { + .driver = { + .name = "sdhci-bcm2835", + .owner = THIS_MODULE, + .of_match_table = bcm2835_sdhci_of_match, + .pm = SDHCI_PLTFM_PMOPS, + }, + .probe = bcm2835_sdhci_probe, + .remove = bcm2835_sdhci_remove, +}; +module_platform_driver(bcm2835_sdhci_driver); + +MODULE_DESCRIPTION("BCM2835 SDHCI driver"); +MODULE_AUTHOR("Stephen Warren"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index e07df812ff1e..78ac00227c1a 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -21,6 +21,7 @@ #include <linux/mmc/host.h> #include <linux/mmc/mmc.h> #include <linux/mmc/sdio.h> +#include <linux/mmc/slot-gpio.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_gpio.h> @@ -29,12 +30,22 @@ #include "sdhci-pltfm.h" #include "sdhci-esdhc.h" -#define SDHCI_CTRL_D3CD 0x08 +#define ESDHC_CTRL_D3CD 0x08 /* VENDOR SPEC register */ -#define SDHCI_VENDOR_SPEC 0xC0 -#define SDHCI_VENDOR_SPEC_SDIO_QUIRK 0x00000002 -#define SDHCI_WTMK_LVL 0x44 -#define SDHCI_MIX_CTRL 0x48 +#define ESDHC_VENDOR_SPEC 0xc0 +#define ESDHC_VENDOR_SPEC_SDIO_QUIRK (1 << 1) +#define ESDHC_WTMK_LVL 0x44 +#define ESDHC_MIX_CTRL 0x48 +#define ESDHC_MIX_CTRL_AC23EN (1 << 7) +/* Bits 3 and 6 are not SDHCI standard definitions */ +#define ESDHC_MIX_CTRL_SDHCI_MASK 0xb7 + +/* + * Our interpretation of the SDHCI_HOST_CONTROL register + */ +#define ESDHC_CTRL_4BITBUS (0x1 << 1) +#define ESDHC_CTRL_8BITBUS (0x2 << 1) +#define ESDHC_CTRL_BUSWIDTH_MASK (0x3 << 1) /* * There is an INT DMA ERR mis-match between eSDHC and STD SDHC SPEC: @@ -42,7 +53,7 @@ * but bit28 is used as the INT DMA ERR in fsl eSDHC design. * Define this macro DMA error INT for fsl eSDHC */ -#define SDHCI_INT_VENDOR_SPEC_DMA_ERR 0x10000000 +#define ESDHC_INT_VENDOR_SPEC_DMA_ERR (1 << 28) /* * The CMDTYPE of the CMD register (offset 0xE) should be set to @@ -143,23 +154,8 @@ static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, i static u32 esdhc_readl_le(struct sdhci_host *host, int reg) { - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct pltfm_imx_data *imx_data = pltfm_host->priv; - struct esdhc_platform_data *boarddata = &imx_data->boarddata; - - /* fake CARD_PRESENT flag */ u32 val = readl(host->ioaddr + reg); - if (unlikely((reg == SDHCI_PRESENT_STATE) - && gpio_is_valid(boarddata->cd_gpio))) { - if (gpio_get_value(boarddata->cd_gpio)) - /* no card, if a valid gpio says so... */ - val &= ~SDHCI_CARD_PRESENT; - else - /* ... in all other cases assume card is present */ - val |= SDHCI_CARD_PRESENT; - } - if (unlikely(reg == SDHCI_CAPABILITIES)) { /* In FSL esdhc IC module, only bit20 is used to indicate the * ADMA2 capability of esdhc, but this bit is messed up on @@ -175,8 +171,8 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg) } if (unlikely(reg == SDHCI_INT_STATUS)) { - if (val & SDHCI_INT_VENDOR_SPEC_DMA_ERR) { - val &= ~SDHCI_INT_VENDOR_SPEC_DMA_ERR; + if (val & ESDHC_INT_VENDOR_SPEC_DMA_ERR) { + val &= ~ESDHC_INT_VENDOR_SPEC_DMA_ERR; val |= SDHCI_INT_ADMA_ERROR; } } @@ -188,17 +184,9 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct pltfm_imx_data *imx_data = pltfm_host->priv; - struct esdhc_platform_data *boarddata = &imx_data->boarddata; u32 data; if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) { - if (boarddata->cd_type == ESDHC_CD_GPIO) - /* - * These interrupts won't work with a custom - * card_detect gpio (only applied to mx25/35) - */ - val &= ~(SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT); - if (val & SDHCI_INT_CARD_INT) { /* * Clear and then set D3CD bit to avoid missing the @@ -209,9 +197,9 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) * re-sample it by the following steps. */ data = readl(host->ioaddr + SDHCI_HOST_CONTROL); - data &= ~SDHCI_CTRL_D3CD; + data &= ~ESDHC_CTRL_D3CD; writel(data, host->ioaddr + SDHCI_HOST_CONTROL); - data |= SDHCI_CTRL_D3CD; + data |= ESDHC_CTRL_D3CD; writel(data, host->ioaddr + SDHCI_HOST_CONTROL); } } @@ -220,15 +208,15 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) && (reg == SDHCI_INT_STATUS) && (val & SDHCI_INT_DATA_END))) { u32 v; - v = readl(host->ioaddr + SDHCI_VENDOR_SPEC); - v &= ~SDHCI_VENDOR_SPEC_SDIO_QUIRK; - writel(v, host->ioaddr + SDHCI_VENDOR_SPEC); + v = readl(host->ioaddr + ESDHC_VENDOR_SPEC); + v &= ~ESDHC_VENDOR_SPEC_SDIO_QUIRK; + writel(v, host->ioaddr + ESDHC_VENDOR_SPEC); } if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) { if (val & SDHCI_INT_ADMA_ERROR) { val &= ~SDHCI_INT_ADMA_ERROR; - val |= SDHCI_INT_VENDOR_SPEC_DMA_ERR; + val |= ESDHC_INT_VENDOR_SPEC_DMA_ERR; } } @@ -237,15 +225,18 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) static u16 esdhc_readw_le(struct sdhci_host *host, int reg) { + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct pltfm_imx_data *imx_data = pltfm_host->priv; + if (unlikely(reg == SDHCI_HOST_VERSION)) { - u16 val = readw(host->ioaddr + (reg ^ 2)); - /* - * uSDHC supports SDHCI v3.0, but it's encoded as value - * 0x3 in host controller version register, which violates - * SDHCI_SPEC_300 definition. Work it around here. - */ - if ((val & SDHCI_SPEC_VER_MASK) == 3) - return --val; + reg ^= 2; + if (is_imx6q_usdhc(imx_data)) { + /* + * The usdhc register returns a wrong host version. + * Correct it here. + */ + return SDHCI_SPEC_300; + } } return readw(host->ioaddr + reg); @@ -258,20 +249,32 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) switch (reg) { case SDHCI_TRANSFER_MODE: - /* - * Postpone this write, we must do it together with a - * command write that is down below. - */ if ((imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT) && (host->cmd->opcode == SD_IO_RW_EXTENDED) && (host->cmd->data->blocks > 1) && (host->cmd->data->flags & MMC_DATA_READ)) { u32 v; - v = readl(host->ioaddr + SDHCI_VENDOR_SPEC); - v |= SDHCI_VENDOR_SPEC_SDIO_QUIRK; - writel(v, host->ioaddr + SDHCI_VENDOR_SPEC); + v = readl(host->ioaddr + ESDHC_VENDOR_SPEC); + v |= ESDHC_VENDOR_SPEC_SDIO_QUIRK; + writel(v, host->ioaddr + ESDHC_VENDOR_SPEC); + } + + if (is_imx6q_usdhc(imx_data)) { + u32 m = readl(host->ioaddr + ESDHC_MIX_CTRL); + /* Swap AC23 bit */ + if (val & SDHCI_TRNS_AUTO_CMD23) { + val &= ~SDHCI_TRNS_AUTO_CMD23; + val |= ESDHC_MIX_CTRL_AC23EN; + } + m = val | (m & ~ESDHC_MIX_CTRL_SDHCI_MASK); + writel(m, host->ioaddr + ESDHC_MIX_CTRL); + } else { + /* + * Postpone this write, we must do it together with a + * command write that is down below. + */ + imx_data->scratchpad = val; } - imx_data->scratchpad = val; return; case SDHCI_COMMAND: if ((host->cmd->opcode == MMC_STOP_TRANSMISSION || @@ -279,16 +282,12 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT)) val |= SDHCI_CMD_ABORTCMD; - if (is_imx6q_usdhc(imx_data)) { - u32 m = readl(host->ioaddr + SDHCI_MIX_CTRL); - m = imx_data->scratchpad | (m & 0xffff0000); - writel(m, host->ioaddr + SDHCI_MIX_CTRL); + if (is_imx6q_usdhc(imx_data)) writel(val << 16, host->ioaddr + SDHCI_TRANSFER_MODE); - } else { + else writel(val << 16 | imx_data->scratchpad, host->ioaddr + SDHCI_TRANSFER_MODE); - } return; case SDHCI_BLOCK_SIZE: val &= ~SDHCI_MAKE_BLKSZ(0x7, 0); @@ -302,6 +301,7 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct pltfm_imx_data *imx_data = pltfm_host->priv; u32 new_val; + u32 mask; switch (reg) { case SDHCI_POWER_CONTROL: @@ -311,10 +311,8 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) */ return; case SDHCI_HOST_CONTROL: - /* FSL messed up here, so we can just keep those three */ - new_val = val & (SDHCI_CTRL_LED | \ - SDHCI_CTRL_4BITBUS | \ - SDHCI_CTRL_D3CD); + /* FSL messed up here, so we need to manually compose it. */ + new_val = val & SDHCI_CTRL_LED; /* ensure the endianness */ new_val |= ESDHC_HOST_CONTROL_LE; /* bits 8&9 are reserved on mx25 */ @@ -323,7 +321,13 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) new_val |= (val & SDHCI_CTRL_DMA_MASK) << 5; } - esdhc_clrset_le(host, 0xffff, new_val, reg); + /* + * Do not touch buswidth bits here. This is done in + * esdhc_pltfm_bus_width. + */ + mask = 0xffff & ~ESDHC_CTRL_BUSWIDTH_MASK; + + esdhc_clrset_le(host, mask, new_val, reg); return; } esdhc_clrset_le(host, 0xff, val, reg); @@ -336,15 +340,15 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) * circuit relies on. To work around it, we turn the clocks on back * to keep card detection circuit functional. */ - if ((reg == SDHCI_SOFTWARE_RESET) && (val & 1)) + if ((reg == SDHCI_SOFTWARE_RESET) && (val & 1)) { esdhc_clrset_le(host, 0x7, 0x7, ESDHC_SYSTEM_CONTROL); -} - -static unsigned int esdhc_pltfm_get_max_clock(struct sdhci_host *host) -{ - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - - return clk_get_rate(pltfm_host->clk); + /* + * The reset on usdhc fails to clear MIX_CTRL register. + * Do it manually here. + */ + if (is_imx6q_usdhc(imx_data)) + writel(0, host->ioaddr + ESDHC_MIX_CTRL); + } } static unsigned int esdhc_pltfm_get_min_clock(struct sdhci_host *host) @@ -362,8 +366,7 @@ static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host) switch (boarddata->wp_type) { case ESDHC_WP_GPIO: - if (gpio_is_valid(boarddata->wp_gpio)) - return gpio_get_value(boarddata->wp_gpio); + return mmc_gpio_get_ro(host->mmc); case ESDHC_WP_CONTROLLER: return !(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_WRITE_PROTECT); @@ -374,6 +377,28 @@ static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host) return -ENOSYS; } +static int esdhc_pltfm_bus_width(struct sdhci_host *host, int width) +{ + u32 ctrl; + + switch (width) { + case MMC_BUS_WIDTH_8: + ctrl = ESDHC_CTRL_8BITBUS; + break; + case MMC_BUS_WIDTH_4: + ctrl = ESDHC_CTRL_4BITBUS; + break; + default: + ctrl = 0; + break; + } + + esdhc_clrset_le(host, ESDHC_CTRL_BUSWIDTH_MASK, ctrl, + SDHCI_HOST_CONTROL); + + return 0; +} + static struct sdhci_ops sdhci_esdhc_ops = { .read_l = esdhc_readl_le, .read_w = esdhc_readw_le, @@ -381,9 +406,10 @@ static struct sdhci_ops sdhci_esdhc_ops = { .write_w = esdhc_writew_le, .write_b = esdhc_writeb_le, .set_clock = esdhc_set_clock, - .get_max_clock = esdhc_pltfm_get_max_clock, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, .get_min_clock = esdhc_pltfm_get_min_clock, .get_ro = esdhc_pltfm_get_ro, + .platform_bus_width = esdhc_pltfm_bus_width, }; static struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { @@ -394,14 +420,6 @@ static struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { .ops = &sdhci_esdhc_ops, }; -static irqreturn_t cd_irq(int irq, void *data) -{ - struct sdhci_host *sdhost = (struct sdhci_host *)data; - - tasklet_schedule(&sdhost->card_tasklet); - return IRQ_HANDLED; -}; - #ifdef CONFIG_OF static int sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, @@ -429,6 +447,8 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, if (gpio_is_valid(boarddata->wp_gpio)) boarddata->wp_type = ESDHC_WP_GPIO; + of_property_read_u32(np, "bus-width", &boarddata->max_bus_width); + return 0; } #else @@ -512,7 +532,7 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) * to something insane. Change it back here. */ if (is_imx6q_usdhc(imx_data)) - writel(0x08100810, host->ioaddr + SDHCI_WTMK_LVL); + writel(0x08100810, host->ioaddr + ESDHC_WTMK_LVL); boarddata = &imx_data->boarddata; if (sdhci_esdhc_imx_probe_dt(pdev, boarddata) < 0) { @@ -527,37 +547,22 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) /* write_protect */ if (boarddata->wp_type == ESDHC_WP_GPIO) { - err = devm_gpio_request_one(&pdev->dev, boarddata->wp_gpio, - GPIOF_IN, "ESDHC_WP"); + err = mmc_gpio_request_ro(host->mmc, boarddata->wp_gpio); if (err) { - dev_warn(mmc_dev(host->mmc), - "no write-protect pin available!\n"); - boarddata->wp_gpio = -EINVAL; + dev_err(mmc_dev(host->mmc), + "failed to request write-protect gpio!\n"); + goto disable_clk; } - } else { - boarddata->wp_gpio = -EINVAL; + host->mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; } /* card_detect */ - if (boarddata->cd_type != ESDHC_CD_GPIO) - boarddata->cd_gpio = -EINVAL; - switch (boarddata->cd_type) { case ESDHC_CD_GPIO: - err = devm_gpio_request_one(&pdev->dev, boarddata->cd_gpio, - GPIOF_IN, "ESDHC_CD"); + err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio); if (err) { dev_err(mmc_dev(host->mmc), - "no card-detect pin available!\n"); - goto disable_clk; - } - - err = devm_request_irq(&pdev->dev, - gpio_to_irq(boarddata->cd_gpio), cd_irq, - IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, - mmc_hostname(host->mmc), host); - if (err) { - dev_err(mmc_dev(host->mmc), "request irq error\n"); + "failed to request card-detect gpio!\n"); goto disable_clk; } /* fall through */ @@ -575,6 +580,19 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) break; } + switch (boarddata->max_bus_width) { + case 8: + host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_4_BIT_DATA; + break; + case 4: + host->mmc->caps |= MMC_CAP_4_BIT_DATA; + break; + case 1: + default: + host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA; + break; + } + err = sdhci_add_host(host); if (err) goto disable_clk; diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index c7dd0cbc99de..c7ccf3034dad 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -935,7 +935,7 @@ static int sdhci_pci_enable_dma(struct sdhci_host *host) return 0; } -static int sdhci_pci_8bit_width(struct sdhci_host *host, int width) +static int sdhci_pci_bus_width(struct sdhci_host *host, int width) { u8 ctrl; @@ -977,7 +977,7 @@ static void sdhci_pci_hw_reset(struct sdhci_host *host) static struct sdhci_ops sdhci_pci_ops = { .enable_dma = sdhci_pci_enable_dma, - .platform_8bit_width = sdhci_pci_8bit_width, + .platform_bus_width = sdhci_pci_bus_width, .hw_reset = sdhci_pci_hw_reset, }; diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c index d4283ef5917a..3145a780b035 100644 --- a/drivers/mmc/host/sdhci-pltfm.c +++ b/drivers/mmc/host/sdhci-pltfm.c @@ -36,6 +36,14 @@ #endif #include "sdhci-pltfm.h" +unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + + return clk_get_rate(pltfm_host->clk); +} +EXPORT_SYMBOL_GPL(sdhci_pltfm_clk_get_max_clock); + static struct sdhci_ops sdhci_pltfm_ops = { }; diff --git a/drivers/mmc/host/sdhci-pltfm.h b/drivers/mmc/host/sdhci-pltfm.h index 37e0e184a0bb..153b6c509ebe 100644 --- a/drivers/mmc/host/sdhci-pltfm.h +++ b/drivers/mmc/host/sdhci-pltfm.h @@ -98,6 +98,8 @@ extern int sdhci_pltfm_register(struct platform_device *pdev, struct sdhci_pltfm_data *pdata); extern int sdhci_pltfm_unregister(struct platform_device *pdev); +extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host); + #ifdef CONFIG_PM extern const struct dev_pm_ops sdhci_pltfm_pmops; #define SDHCI_PLTFM_PMOPS (&sdhci_pltfm_pmops) diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index ac854aa192a8..eeb7d439db1d 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -111,17 +111,10 @@ static int pxav2_mmc_set_width(struct sdhci_host *host, int width) return 0; } -static u32 pxav2_get_max_clock(struct sdhci_host *host) -{ - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - - return clk_get_rate(pltfm_host->clk); -} - static struct sdhci_ops pxav2_sdhci_ops = { - .get_max_clock = pxav2_get_max_clock, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, .platform_reset_exit = pxav2_set_private_registers, - .platform_8bit_width = pxav2_mmc_set_width, + .platform_bus_width = pxav2_mmc_set_width, }; #ifdef CONFIG_OF diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c index fad0966427fd..a0cdbc570a83 100644 --- a/drivers/mmc/host/sdhci-pxav3.c +++ b/drivers/mmc/host/sdhci-pxav3.c @@ -32,10 +32,14 @@ #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_gpio.h> +#include <linux/pm.h> +#include <linux/pm_runtime.h> #include "sdhci.h" #include "sdhci-pltfm.h" +#define PXAV3_RPM_DELAY_MS 50 + #define SD_CLOCK_BURST_SIZE_SETUP 0x10A #define SDCLK_SEL 0x100 #define SDCLK_DELAY_SHIFT 9 @@ -163,18 +167,11 @@ static int pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs) return 0; } -static u32 pxav3_get_max_clock(struct sdhci_host *host) -{ - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - - return clk_get_rate(pltfm_host->clk); -} - static struct sdhci_ops pxav3_sdhci_ops = { .platform_reset_exit = pxav3_set_private_registers, .set_uhs_signaling = pxav3_set_uhs_signaling, .platform_send_init_74_clocks = pxav3_gen_init_74_clocks, - .get_max_clock = pxav3_get_max_clock, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, }; #ifdef CONFIG_OF @@ -303,20 +300,37 @@ static int sdhci_pxav3_probe(struct platform_device *pdev) sdhci_get_of_property(pdev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, PXAV3_RPM_DELAY_MS); + pm_runtime_use_autosuspend(&pdev->dev); + pm_suspend_ignore_children(&pdev->dev, 1); + pm_runtime_get_noresume(&pdev->dev); + ret = sdhci_add_host(host); if (ret) { dev_err(&pdev->dev, "failed to add host\n"); + pm_runtime_forbid(&pdev->dev); + pm_runtime_disable(&pdev->dev); goto err_add_host; } platform_set_drvdata(pdev, host); + if (pdata->pm_caps & MMC_PM_KEEP_POWER) { + device_init_wakeup(&pdev->dev, 1); + host->mmc->pm_flags |= MMC_PM_WAKE_SDIO_IRQ; + } else { + device_init_wakeup(&pdev->dev, 0); + } + + pm_runtime_put_autosuspend(&pdev->dev); + return 0; err_add_host: clk_disable_unprepare(clk); clk_put(clk); - mmc_gpio_free_cd(host->mmc); err_cd_req: err_clk_get: sdhci_pltfm_free(pdev); @@ -329,16 +343,14 @@ static int sdhci_pxav3_remove(struct platform_device *pdev) struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_pxa *pxa = pltfm_host->priv; - struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data; + pm_runtime_get_sync(&pdev->dev); sdhci_remove_host(host, 1); + pm_runtime_disable(&pdev->dev); clk_disable_unprepare(pltfm_host->clk); clk_put(pltfm_host->clk); - if (gpio_is_valid(pdata->ext_cd_gpio)) - mmc_gpio_free_cd(host->mmc); - sdhci_pltfm_free(pdev); kfree(pxa); @@ -347,6 +359,83 @@ static int sdhci_pxav3_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int sdhci_pxav3_suspend(struct device *dev) +{ + int ret; + struct sdhci_host *host = dev_get_drvdata(dev); + + pm_runtime_get_sync(dev); + ret = sdhci_suspend_host(host); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + return ret; +} + +static int sdhci_pxav3_resume(struct device *dev) +{ + int ret; + struct sdhci_host *host = dev_get_drvdata(dev); + + pm_runtime_get_sync(dev); + ret = sdhci_resume_host(host); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + return ret; +} +#endif + +#ifdef CONFIG_PM_RUNTIME +static int sdhci_pxav3_runtime_suspend(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + unsigned long flags; + + if (pltfm_host->clk) { + spin_lock_irqsave(&host->lock, flags); + host->runtime_suspended = true; + spin_unlock_irqrestore(&host->lock, flags); + + clk_disable_unprepare(pltfm_host->clk); + } + + return 0; +} + +static int sdhci_pxav3_runtime_resume(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + unsigned long flags; + + if (pltfm_host->clk) { + clk_prepare_enable(pltfm_host->clk); + + spin_lock_irqsave(&host->lock, flags); + host->runtime_suspended = false; + spin_unlock_irqrestore(&host->lock, flags); + } + + return 0; +} +#endif + +#ifdef CONFIG_PM +static const struct dev_pm_ops sdhci_pxav3_pmops = { + SET_SYSTEM_SLEEP_PM_OPS(sdhci_pxav3_suspend, sdhci_pxav3_resume) + SET_RUNTIME_PM_OPS(sdhci_pxav3_runtime_suspend, + sdhci_pxav3_runtime_resume, NULL) +}; + +#define SDHCI_PXAV3_PMOPS (&sdhci_pxav3_pmops) + +#else +#define SDHCI_PXAV3_PMOPS NULL +#endif + static struct platform_driver sdhci_pxav3_driver = { .driver = { .name = "sdhci-pxav3", @@ -354,7 +443,7 @@ static struct platform_driver sdhci_pxav3_driver = { .of_match_table = sdhci_pxav3_of_match, #endif .owner = THIS_MODULE, - .pm = SDHCI_PLTFM_PMOPS, + .pm = SDHCI_PXAV3_PMOPS, }, .probe = sdhci_pxav3_probe, .remove = sdhci_pxav3_remove, diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c index a0c621421ee8..7363efe72287 100644 --- a/drivers/mmc/host/sdhci-s3c.c +++ b/drivers/mmc/host/sdhci-s3c.c @@ -332,14 +332,14 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock) } /** - * sdhci_s3c_platform_8bit_width - support 8bit buswidth + * sdhci_s3c_platform_bus_width - support 8bit buswidth * @host: The SDHCI host being queried * @width: MMC_BUS_WIDTH_ macro for the bus width being requested * * We have 8-bit width support but is not a v3 controller. - * So we add platform_8bit_width() and support 8bit width. + * So we add platform_bus_width() and support 8bit width. */ -static int sdhci_s3c_platform_8bit_width(struct sdhci_host *host, int width) +static int sdhci_s3c_platform_bus_width(struct sdhci_host *host, int width) { u8 ctrl; @@ -369,7 +369,7 @@ static struct sdhci_ops sdhci_s3c_ops = { .get_max_clock = sdhci_s3c_get_max_clk, .set_clock = sdhci_s3c_set_clock, .get_min_clock = sdhci_s3c_get_min_clock, - .platform_8bit_width = sdhci_s3c_platform_8bit_width, + .platform_bus_width = sdhci_s3c_platform_bus_width, }; static void sdhci_s3c_notify_change(struct platform_device *dev, int state) diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 3695b2e0cbd2..08b06e9a3a21 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -27,8 +27,6 @@ #include <asm/gpio.h> -#include <linux/platform_data/mmc-sdhci-tegra.h> - #include "sdhci-pltfm.h" /* Tegra SDHOST controller vendor register definitions */ @@ -45,8 +43,11 @@ struct sdhci_tegra_soc_data { }; struct sdhci_tegra { - const struct tegra_sdhci_platform_data *plat; const struct sdhci_tegra_soc_data *soc_data; + int cd_gpio; + int wp_gpio; + int power_gpio; + int is_8bit; }; static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg) @@ -108,12 +109,11 @@ static unsigned int tegra_sdhci_get_ro(struct sdhci_host *host) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_tegra *tegra_host = pltfm_host->priv; - const struct tegra_sdhci_platform_data *plat = tegra_host->plat; - if (!gpio_is_valid(plat->wp_gpio)) + if (!gpio_is_valid(tegra_host->wp_gpio)) return -1; - return gpio_get_value(plat->wp_gpio); + return gpio_get_value(tegra_host->wp_gpio); } static irqreturn_t carddetect_irq(int irq, void *data) @@ -143,15 +143,14 @@ static void tegra_sdhci_reset_exit(struct sdhci_host *host, u8 mask) } } -static int tegra_sdhci_8bit(struct sdhci_host *host, int bus_width) +static int tegra_sdhci_buswidth(struct sdhci_host *host, int bus_width) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_tegra *tegra_host = pltfm_host->priv; - const struct tegra_sdhci_platform_data *plat = tegra_host->plat; u32 ctrl; ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); - if (plat->is_8bit && bus_width == MMC_BUS_WIDTH_8) { + if (tegra_host->is_8bit && bus_width == MMC_BUS_WIDTH_8) { ctrl &= ~SDHCI_CTRL_4BITBUS; ctrl |= SDHCI_CTRL_8BITBUS; } else { @@ -170,7 +169,7 @@ static struct sdhci_ops tegra_sdhci_ops = { .read_l = tegra_sdhci_readl, .read_w = tegra_sdhci_readw, .write_l = tegra_sdhci_writel, - .platform_8bit_width = tegra_sdhci_8bit, + .platform_bus_width = tegra_sdhci_buswidth, .platform_reset_exit = tegra_sdhci_reset_exit, }; @@ -217,31 +216,19 @@ static const struct of_device_id sdhci_tegra_dt_match[] = { }; MODULE_DEVICE_TABLE(of, sdhci_dt_ids); -static struct tegra_sdhci_platform_data *sdhci_tegra_dt_parse_pdata( - struct platform_device *pdev) +static void sdhci_tegra_parse_dt(struct device *dev, + struct sdhci_tegra *tegra_host) { - struct tegra_sdhci_platform_data *plat; - struct device_node *np = pdev->dev.of_node; + struct device_node *np = dev->of_node; u32 bus_width; - if (!np) - return NULL; - - plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL); - if (!plat) { - dev_err(&pdev->dev, "Can't allocate platform data\n"); - return NULL; - } - - plat->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0); - plat->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0); - plat->power_gpio = of_get_named_gpio(np, "power-gpios", 0); + tegra_host->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0); + tegra_host->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0); + tegra_host->power_gpio = of_get_named_gpio(np, "power-gpios", 0); if (of_property_read_u32(np, "bus-width", &bus_width) == 0 && bus_width == 8) - plat->is_8bit = 1; - - return plat; + tegra_host->is_8bit = 1; } static int sdhci_tegra_probe(struct platform_device *pdev) @@ -250,7 +237,6 @@ static int sdhci_tegra_probe(struct platform_device *pdev) const struct sdhci_tegra_soc_data *soc_data; struct sdhci_host *host; struct sdhci_pltfm_host *pltfm_host; - struct tegra_sdhci_platform_data *plat; struct sdhci_tegra *tegra_host; struct clk *clk; int rc; @@ -263,52 +249,40 @@ static int sdhci_tegra_probe(struct platform_device *pdev) host = sdhci_pltfm_init(pdev, soc_data->pdata); if (IS_ERR(host)) return PTR_ERR(host); - pltfm_host = sdhci_priv(host); - plat = pdev->dev.platform_data; - - if (plat == NULL) - plat = sdhci_tegra_dt_parse_pdata(pdev); - - if (plat == NULL) { - dev_err(mmc_dev(host->mmc), "missing platform data\n"); - rc = -ENXIO; - goto err_no_plat; - } - tegra_host = devm_kzalloc(&pdev->dev, sizeof(*tegra_host), GFP_KERNEL); if (!tegra_host) { dev_err(mmc_dev(host->mmc), "failed to allocate tegra_host\n"); rc = -ENOMEM; - goto err_no_plat; + goto err_alloc_tegra_host; } - - tegra_host->plat = plat; tegra_host->soc_data = soc_data; - pltfm_host->priv = tegra_host; - if (gpio_is_valid(plat->power_gpio)) { - rc = gpio_request(plat->power_gpio, "sdhci_power"); + sdhci_tegra_parse_dt(&pdev->dev, tegra_host); + + if (gpio_is_valid(tegra_host->power_gpio)) { + rc = gpio_request(tegra_host->power_gpio, "sdhci_power"); if (rc) { dev_err(mmc_dev(host->mmc), "failed to allocate power gpio\n"); goto err_power_req; } - gpio_direction_output(plat->power_gpio, 1); + gpio_direction_output(tegra_host->power_gpio, 1); } - if (gpio_is_valid(plat->cd_gpio)) { - rc = gpio_request(plat->cd_gpio, "sdhci_cd"); + if (gpio_is_valid(tegra_host->cd_gpio)) { + rc = gpio_request(tegra_host->cd_gpio, "sdhci_cd"); if (rc) { dev_err(mmc_dev(host->mmc), "failed to allocate cd gpio\n"); goto err_cd_req; } - gpio_direction_input(plat->cd_gpio); + gpio_direction_input(tegra_host->cd_gpio); - rc = request_irq(gpio_to_irq(plat->cd_gpio), carddetect_irq, + rc = request_irq(gpio_to_irq(tegra_host->cd_gpio), + carddetect_irq, IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, mmc_hostname(host->mmc), host); @@ -319,14 +293,14 @@ static int sdhci_tegra_probe(struct platform_device *pdev) } - if (gpio_is_valid(plat->wp_gpio)) { - rc = gpio_request(plat->wp_gpio, "sdhci_wp"); + if (gpio_is_valid(tegra_host->wp_gpio)) { + rc = gpio_request(tegra_host->wp_gpio, "sdhci_wp"); if (rc) { dev_err(mmc_dev(host->mmc), "failed to allocate wp gpio\n"); goto err_wp_req; } - gpio_direction_input(plat->wp_gpio); + gpio_direction_input(tegra_host->wp_gpio); } clk = clk_get(mmc_dev(host->mmc), NULL); @@ -338,9 +312,7 @@ static int sdhci_tegra_probe(struct platform_device *pdev) clk_prepare_enable(clk); pltfm_host->clk = clk; - host->mmc->pm_caps = plat->pm_flags; - - if (plat->is_8bit) + if (tegra_host->is_8bit) host->mmc->caps |= MMC_CAP_8_BIT_DATA; rc = sdhci_add_host(host); @@ -353,19 +325,19 @@ err_add_host: clk_disable_unprepare(pltfm_host->clk); clk_put(pltfm_host->clk); err_clk_get: - if (gpio_is_valid(plat->wp_gpio)) - gpio_free(plat->wp_gpio); + if (gpio_is_valid(tegra_host->wp_gpio)) + gpio_free(tegra_host->wp_gpio); err_wp_req: - if (gpio_is_valid(plat->cd_gpio)) - free_irq(gpio_to_irq(plat->cd_gpio), host); + if (gpio_is_valid(tegra_host->cd_gpio)) + free_irq(gpio_to_irq(tegra_host->cd_gpio), host); err_cd_irq_req: - if (gpio_is_valid(plat->cd_gpio)) - gpio_free(plat->cd_gpio); + if (gpio_is_valid(tegra_host->cd_gpio)) + gpio_free(tegra_host->cd_gpio); err_cd_req: - if (gpio_is_valid(plat->power_gpio)) - gpio_free(plat->power_gpio); + if (gpio_is_valid(tegra_host->power_gpio)) + gpio_free(tegra_host->power_gpio); err_power_req: -err_no_plat: +err_alloc_tegra_host: sdhci_pltfm_free(pdev); return rc; } @@ -375,21 +347,20 @@ static int sdhci_tegra_remove(struct platform_device *pdev) struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_tegra *tegra_host = pltfm_host->priv; - const struct tegra_sdhci_platform_data *plat = tegra_host->plat; int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); sdhci_remove_host(host, dead); - if (gpio_is_valid(plat->wp_gpio)) - gpio_free(plat->wp_gpio); + if (gpio_is_valid(tegra_host->wp_gpio)) + gpio_free(tegra_host->wp_gpio); - if (gpio_is_valid(plat->cd_gpio)) { - free_irq(gpio_to_irq(plat->cd_gpio), host); - gpio_free(plat->cd_gpio); + if (gpio_is_valid(tegra_host->cd_gpio)) { + free_irq(gpio_to_irq(tegra_host->cd_gpio), host); + gpio_free(tegra_host->cd_gpio); } - if (gpio_is_valid(plat->power_gpio)) - gpio_free(plat->power_gpio); + if (gpio_is_valid(tegra_host->power_gpio)) + gpio_free(tegra_host->power_gpio); clk_disable_unprepare(pltfm_host->clk); clk_put(pltfm_host->clk); diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 6f0bfc0c8c9c..51bbba486f38 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -53,6 +53,7 @@ static void sdhci_send_command(struct sdhci_host *, struct mmc_command *); static void sdhci_finish_command(struct sdhci_host *); static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); static void sdhci_tuning_timer(unsigned long data); +static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable); #ifdef CONFIG_PM_RUNTIME static int sdhci_runtime_pm_get(struct sdhci_host *host); @@ -1082,6 +1083,37 @@ static void sdhci_finish_command(struct sdhci_host *host) } } +static u16 sdhci_get_preset_value(struct sdhci_host *host) +{ + u16 ctrl, preset = 0; + + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); + + switch (ctrl & SDHCI_CTRL_UHS_MASK) { + case SDHCI_CTRL_UHS_SDR12: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12); + break; + case SDHCI_CTRL_UHS_SDR25: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR25); + break; + case SDHCI_CTRL_UHS_SDR50: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR50); + break; + case SDHCI_CTRL_UHS_SDR104: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR104); + break; + case SDHCI_CTRL_UHS_DDR50: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_DDR50); + break; + default: + pr_warn("%s: Invalid UHS-I mode selected\n", + mmc_hostname(host->mmc)); + preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12); + break; + } + return preset; +} + static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) { int div = 0; /* Initialized for compiler warning */ @@ -1106,35 +1138,43 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) goto out; if (host->version >= SDHCI_SPEC_300) { + if (sdhci_readw(host, SDHCI_HOST_CONTROL2) & + SDHCI_CTRL_PRESET_VAL_ENABLE) { + u16 pre_val; + + clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); + pre_val = sdhci_get_preset_value(host); + div = (pre_val & SDHCI_PRESET_SDCLK_FREQ_MASK) + >> SDHCI_PRESET_SDCLK_FREQ_SHIFT; + if (host->clk_mul && + (pre_val & SDHCI_PRESET_CLKGEN_SEL_MASK)) { + clk = SDHCI_PROG_CLOCK_MODE; + real_div = div + 1; + clk_mul = host->clk_mul; + } else { + real_div = max_t(int, 1, div << 1); + } + goto clock_set; + } + /* * Check if the Host Controller supports Programmable Clock * Mode. */ if (host->clk_mul) { - u16 ctrl; - + for (div = 1; div <= 1024; div++) { + if ((host->max_clk * host->clk_mul / div) + <= clock) + break; + } /* - * We need to figure out whether the Host Driver needs - * to select Programmable Clock Mode, or the value can - * be set automatically by the Host Controller based on - * the Preset Value registers. + * Set Programmable Clock Mode in the Clock + * Control register. */ - ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); - if (!(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) { - for (div = 1; div <= 1024; div++) { - if (((host->max_clk * host->clk_mul) / - div) <= clock) - break; - } - /* - * Set Programmable Clock Mode in the Clock - * Control register. - */ - clk = SDHCI_PROG_CLOCK_MODE; - real_div = div; - clk_mul = host->clk_mul; - div--; - } + clk = SDHCI_PROG_CLOCK_MODE; + real_div = div; + clk_mul = host->clk_mul; + div--; } else { /* Version 3.00 divisors must be a multiple of 2. */ if (host->max_clk <= clock) @@ -1159,6 +1199,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) div >>= 1; } +clock_set: if (real_div) host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div; @@ -1189,6 +1230,15 @@ out: host->clock = clock; } +static inline void sdhci_update_clock(struct sdhci_host *host) +{ + unsigned int clock; + + clock = host->clock; + host->clock = 0; + sdhci_set_clock(host, clock); +} + static int sdhci_set_power(struct sdhci_host *host, unsigned short power) { u8 pwr = 0; @@ -1258,7 +1308,7 @@ static int sdhci_set_power(struct sdhci_host *host, unsigned short power) static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) { struct sdhci_host *host; - bool present; + int present; unsigned long flags; u32 tuning_opcode; @@ -1287,18 +1337,21 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) host->mrq = mrq; - /* If polling, assume that the card is always present. */ - if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) - present = true; - else - present = sdhci_readl(host, SDHCI_PRESENT_STATE) & - SDHCI_CARD_PRESENT; - - /* If we're using a cd-gpio, testing the presence bit might fail. */ - if (!present) { - int ret = mmc_gpio_get_cd(host->mmc); - if (ret > 0) - present = true; + /* + * Firstly check card presence from cd-gpio. The return could + * be one of the following possibilities: + * negative: cd-gpio is not available + * zero: cd-gpio is used, and card is removed + * one: cd-gpio is used, and card is present + */ + present = mmc_gpio_get_cd(host->mmc); + if (present < 0) { + /* If polling, assume that the card is always present. */ + if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) + present = 1; + else + present = sdhci_readl(host, SDHCI_PRESENT_STATE) & + SDHCI_CARD_PRESENT; } if (!present || host->flags & SDHCI_DEVICE_DEAD) { @@ -1364,6 +1417,10 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) sdhci_reinit(host); } + if (host->version >= SDHCI_SPEC_300 && + (ios->power_mode == MMC_POWER_UP)) + sdhci_enable_preset_value(host, false); + sdhci_set_clock(host, ios->clock); if (ios->power_mode == MMC_POWER_OFF) @@ -1383,11 +1440,11 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) /* * If your platform has 8-bit width support but is not a v3 controller, * or if it requires special setup code, you should implement that in - * platform_8bit_width(). + * platform_bus_width(). */ - if (host->ops->platform_8bit_width) - host->ops->platform_8bit_width(host, ios->bus_width); - else { + if (host->ops->platform_bus_width) { + host->ops->platform_bus_width(host, ios->bus_width); + } else { ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); if (ios->bus_width == MMC_BUS_WIDTH_8) { ctrl &= ~SDHCI_CTRL_4BITBUS; @@ -1415,7 +1472,6 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) if (host->version >= SDHCI_SPEC_300) { u16 clk, ctrl_2; - unsigned int clock; /* In case of UHS-I modes, set High Speed Enable */ if ((ios->timing == MMC_TIMING_MMC_HS200) || @@ -1455,9 +1511,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); /* Re-enable SD Clock */ - clock = host->clock; - host->clock = 0; - sdhci_set_clock(host, clock); + sdhci_update_clock(host); } @@ -1487,10 +1541,22 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); } + if (!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN) && + ((ios->timing == MMC_TIMING_UHS_SDR12) || + (ios->timing == MMC_TIMING_UHS_SDR25) || + (ios->timing == MMC_TIMING_UHS_SDR50) || + (ios->timing == MMC_TIMING_UHS_SDR104) || + (ios->timing == MMC_TIMING_UHS_DDR50))) { + u16 preset; + + sdhci_enable_preset_value(host, true); + preset = sdhci_get_preset_value(host); + ios->drv_type = (preset & SDHCI_PRESET_DRV_MASK) + >> SDHCI_PRESET_DRV_SHIFT; + } + /* Re-enable SD Clock */ - clock = host->clock; - host->clock = 0; - sdhci_set_clock(host, clock); + sdhci_update_clock(host); } else sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); @@ -1608,141 +1674,91 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) spin_unlock_irqrestore(&host->lock, flags); } -static int sdhci_do_3_3v_signal_voltage_switch(struct sdhci_host *host, - u16 ctrl) +static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, + struct mmc_ios *ios) { + u16 ctrl; int ret; - /* Set 1.8V Signal Enable in the Host Control2 register to 0 */ - ctrl &= ~SDHCI_CTRL_VDD_180; - sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); - - if (host->vqmmc) { - ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000); - if (ret) { - pr_warning("%s: Switching to 3.3V signalling voltage " - " failed\n", mmc_hostname(host->mmc)); - return -EIO; - } - } - /* Wait for 5ms */ - usleep_range(5000, 5500); + /* + * Signal Voltage Switching is only applicable for Host Controllers + * v3.00 and above. + */ + if (host->version < SDHCI_SPEC_300) + return 0; - /* 3.3V regulator output should be stable within 5 ms */ ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); - if (!(ctrl & SDHCI_CTRL_VDD_180)) - return 0; - pr_warning("%s: 3.3V regulator output did not became stable\n", - mmc_hostname(host->mmc)); + switch (ios->signal_voltage) { + case MMC_SIGNAL_VOLTAGE_330: + /* Set 1.8V Signal Enable in the Host Control2 register to 0 */ + ctrl &= ~SDHCI_CTRL_VDD_180; + sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); - return -EIO; -} + if (host->vqmmc) { + ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000); + if (ret) { + pr_warning("%s: Switching to 3.3V signalling voltage " + " failed\n", mmc_hostname(host->mmc)); + return -EIO; + } + } + /* Wait for 5ms */ + usleep_range(5000, 5500); -static int sdhci_do_1_8v_signal_voltage_switch(struct sdhci_host *host, - u16 ctrl) -{ - u8 pwr; - u16 clk; - u32 present_state; - int ret; + /* 3.3V regulator output should be stable within 5 ms */ + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); + if (!(ctrl & SDHCI_CTRL_VDD_180)) + return 0; - /* Stop SDCLK */ - clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); - clk &= ~SDHCI_CLOCK_CARD_EN; - sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); + pr_warning("%s: 3.3V regulator output did not became stable\n", + mmc_hostname(host->mmc)); + + return -EAGAIN; + case MMC_SIGNAL_VOLTAGE_180: + if (host->vqmmc) { + ret = regulator_set_voltage(host->vqmmc, + 1700000, 1950000); + if (ret) { + pr_warning("%s: Switching to 1.8V signalling voltage " + " failed\n", mmc_hostname(host->mmc)); + return -EIO; + } + } - /* Check whether DAT[3:0] is 0000 */ - present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); - if (!((present_state & SDHCI_DATA_LVL_MASK) >> - SDHCI_DATA_LVL_SHIFT)) { /* * Enable 1.8V Signal Enable in the Host Control2 * register */ - if (host->vqmmc) - ret = regulator_set_voltage(host->vqmmc, - 1700000, 1950000); - else - ret = 0; + ctrl |= SDHCI_CTRL_VDD_180; + sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); - if (!ret) { - ctrl |= SDHCI_CTRL_VDD_180; - sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); + /* Wait for 5ms */ + usleep_range(5000, 5500); - /* Wait for 5ms */ - usleep_range(5000, 5500); + /* 1.8V regulator output should be stable within 5 ms */ + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); + if (ctrl & SDHCI_CTRL_VDD_180) + return 0; - ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); - if (ctrl & SDHCI_CTRL_VDD_180) { - /* Provide SDCLK again and wait for 1ms */ - clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); - clk |= SDHCI_CLOCK_CARD_EN; - sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); - usleep_range(1000, 1500); + pr_warning("%s: 1.8V regulator output did not became stable\n", + mmc_hostname(host->mmc)); - /* - * If DAT[3:0] level is 1111b, then the card - * was successfully switched to 1.8V signaling. - */ - present_state = sdhci_readl(host, - SDHCI_PRESENT_STATE); - if ((present_state & SDHCI_DATA_LVL_MASK) == - SDHCI_DATA_LVL_MASK) - return 0; + return -EAGAIN; + case MMC_SIGNAL_VOLTAGE_120: + if (host->vqmmc) { + ret = regulator_set_voltage(host->vqmmc, 1100000, 1300000); + if (ret) { + pr_warning("%s: Switching to 1.2V signalling voltage " + " failed\n", mmc_hostname(host->mmc)); + return -EIO; } } - } - - /* - * If we are here, that means the switch to 1.8V signaling - * failed. We power cycle the card, and retry initialization - * sequence by setting S18R to 0. - */ - pwr = sdhci_readb(host, SDHCI_POWER_CONTROL); - pwr &= ~SDHCI_POWER_ON; - sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); - if (host->vmmc) - regulator_disable(host->vmmc); - - /* Wait for 1ms as per the spec */ - usleep_range(1000, 1500); - pwr |= SDHCI_POWER_ON; - sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); - if (host->vmmc) - regulator_enable(host->vmmc); - - pr_warning("%s: Switching to 1.8V signalling voltage failed, " - "retrying with S18R set to 0\n", mmc_hostname(host->mmc)); - - return -EAGAIN; -} - -static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, - struct mmc_ios *ios) -{ - u16 ctrl; - - /* - * Signal Voltage Switching is only applicable for Host Controllers - * v3.00 and above. - */ - if (host->version < SDHCI_SPEC_300) return 0; - - /* - * We first check whether the request is to set signalling voltage - * to 3.3V. If so, we change the voltage to 3.3V and return quickly. - */ - ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); - if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) - return sdhci_do_3_3v_signal_voltage_switch(host, ctrl); - else if (!(ctrl & SDHCI_CTRL_VDD_180) && - (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180)) - return sdhci_do_1_8v_signal_voltage_switch(host, ctrl); - else + default: /* No signal voltage switch required */ return 0; + } } static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, @@ -1759,6 +1775,19 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, return err; } +static int sdhci_card_busy(struct mmc_host *mmc) +{ + struct sdhci_host *host = mmc_priv(mmc); + u32 present_state; + + sdhci_runtime_pm_get(host); + /* Check whether DAT[3:0] is 0000 */ + present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); + sdhci_runtime_pm_put(host); + + return !(present_state & SDHCI_DATA_LVL_MASK); +} + static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) { struct sdhci_host *host; @@ -1955,17 +1984,15 @@ out: return err; } -static void sdhci_do_enable_preset_value(struct sdhci_host *host, bool enable) + +static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable) { u16 ctrl; - unsigned long flags; /* Host Controller v3.00 defines preset value registers */ if (host->version < SDHCI_SPEC_300) return; - spin_lock_irqsave(&host->lock, flags); - ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); /* @@ -1981,17 +2008,6 @@ static void sdhci_do_enable_preset_value(struct sdhci_host *host, bool enable) sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); host->flags &= ~SDHCI_PV_ENABLED; } - - spin_unlock_irqrestore(&host->lock, flags); -} - -static void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable) -{ - struct sdhci_host *host = mmc_priv(mmc); - - sdhci_runtime_pm_get(host); - sdhci_do_enable_preset_value(host, enable); - sdhci_runtime_pm_put(host); } static void sdhci_card_event(struct mmc_host *mmc) @@ -2027,8 +2043,8 @@ static const struct mmc_host_ops sdhci_ops = { .enable_sdio_irq = sdhci_enable_sdio_irq, .start_signal_voltage_switch = sdhci_start_signal_voltage_switch, .execute_tuning = sdhci_execute_tuning, - .enable_preset_value = sdhci_enable_preset_value, .card_event = sdhci_card_event, + .card_busy = sdhci_card_busy, }; /*****************************************************************************\ @@ -2080,14 +2096,9 @@ static void sdhci_tasklet_finish(unsigned long param) (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) { /* Some controllers need this kick or reset won't work here */ - if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) { - unsigned int clock; - + if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) /* This is to force an update */ - clock = host->clock; - host->clock = 0; - sdhci_set_clock(host, clock); - } + sdhci_update_clock(host); /* Spec says we should do both at the same time, but Ricoh controllers do not like that. */ @@ -2455,6 +2466,32 @@ out: \*****************************************************************************/ #ifdef CONFIG_PM +void sdhci_enable_irq_wakeups(struct sdhci_host *host) +{ + u8 val; + u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE + | SDHCI_WAKE_ON_INT; + + val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); + val |= mask ; + /* Avoid fake wake up */ + if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) + val &= ~(SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE); + sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); +} +EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups); + +void sdhci_disable_irq_wakeups(struct sdhci_host *host) +{ + u8 val; + u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE + | SDHCI_WAKE_ON_INT; + + val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); + val &= ~mask; + sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); +} +EXPORT_SYMBOL_GPL(sdhci_disable_irq_wakeups); int sdhci_suspend_host(struct sdhci_host *host) { @@ -2484,8 +2521,13 @@ int sdhci_suspend_host(struct sdhci_host *host) return ret; } - free_irq(host->irq, host); - + if (!device_may_wakeup(mmc_dev(host->mmc))) { + sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); + free_irq(host->irq, host); + } else { + sdhci_enable_irq_wakeups(host); + enable_irq_wake(host->irq); + } return ret; } @@ -2500,10 +2542,15 @@ int sdhci_resume_host(struct sdhci_host *host) host->ops->enable_dma(host); } - ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, - mmc_hostname(host->mmc), host); - if (ret) - return ret; + if (!device_may_wakeup(mmc_dev(host->mmc))) { + ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, + mmc_hostname(host->mmc), host); + if (ret) + return ret; + } else { + sdhci_disable_irq_wakeups(host); + disable_irq_wake(host->irq); + } if ((host->mmc->pm_flags & MMC_PM_KEEP_POWER) && (host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) { @@ -2531,17 +2578,6 @@ int sdhci_resume_host(struct sdhci_host *host) } EXPORT_SYMBOL_GPL(sdhci_resume_host); - -void sdhci_enable_irq_wakeups(struct sdhci_host *host) -{ - u8 val; - val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); - val |= SDHCI_WAKE_ON_INT; - sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); -} - -EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups); - #endif /* CONFIG_PM */ #ifdef CONFIG_PM_RUNTIME @@ -2600,8 +2636,12 @@ int sdhci_runtime_resume_host(struct sdhci_host *host) sdhci_do_set_ios(host, &host->mmc->ios); sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios); - if (host_flags & SDHCI_PV_ENABLED) - sdhci_do_enable_preset_value(host, true); + if ((host_flags & SDHCI_PV_ENABLED) && + !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) { + spin_lock_irqsave(&host->lock, flags); + sdhci_enable_preset_value(host, true); + spin_unlock_irqrestore(&host->lock, flags); + } /* Set the re-tuning expiration flag */ if (host->flags & SDHCI_USING_RETUNING_TIMER) @@ -2936,7 +2976,11 @@ int sdhci_add_host(struct sdhci_host *host) } #ifdef CONFIG_REGULATOR - if (host->vmmc) { + /* + * Voltage range check makes sense only if regulator reports + * any voltage value. + */ + if (host->vmmc && regulator_get_voltage(host->vmmc) > 0) { ret = regulator_is_supported_voltage(host->vmmc, 2700000, 3600000); if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330))) @@ -3139,6 +3183,7 @@ int sdhci_add_host(struct sdhci_host *host) #ifdef SDHCI_USE_LEDS_CLASS reset: sdhci_reset(host, SDHCI_RESET_ALL); + sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); free_irq(host->irq, host); #endif untasklet: @@ -3181,6 +3226,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead) if (!dead) sdhci_reset(host, SDHCI_RESET_ALL); + sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); free_irq(host->irq, host); del_timer_sync(&host->timer); diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index a6d69b7bdea2..379e09d9f3c1 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -229,6 +229,18 @@ /* 60-FB reserved */ +#define SDHCI_PRESET_FOR_SDR12 0x66 +#define SDHCI_PRESET_FOR_SDR25 0x68 +#define SDHCI_PRESET_FOR_SDR50 0x6A +#define SDHCI_PRESET_FOR_SDR104 0x6C +#define SDHCI_PRESET_FOR_DDR50 0x6E +#define SDHCI_PRESET_DRV_MASK 0xC000 +#define SDHCI_PRESET_DRV_SHIFT 14 +#define SDHCI_PRESET_CLKGEN_SEL_MASK 0x400 +#define SDHCI_PRESET_CLKGEN_SEL_SHIFT 10 +#define SDHCI_PRESET_SDCLK_FREQ_MASK 0x3FF +#define SDHCI_PRESET_SDCLK_FREQ_SHIFT 0 + #define SDHCI_SLOT_INT_STATUS 0xFC #define SDHCI_HOST_VERSION 0xFE @@ -269,7 +281,7 @@ struct sdhci_ops { unsigned int (*get_max_clock)(struct sdhci_host *host); unsigned int (*get_min_clock)(struct sdhci_host *host); unsigned int (*get_timeout_clock)(struct sdhci_host *host); - int (*platform_8bit_width)(struct sdhci_host *host, + int (*platform_bus_width)(struct sdhci_host *host, int width); void (*platform_send_init_74_clocks)(struct sdhci_host *host, u8 power_mode); diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index 9a4c151067dd..ba76a532ae30 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -56,6 +56,7 @@ #include <linux/mmc/sh_mmcif.h> #include <linux/mmc/slot-gpio.h> #include <linux/mod_devicetable.h> +#include <linux/mutex.h> #include <linux/pagemap.h> #include <linux/platform_device.h> #include <linux/pm_qos.h> @@ -88,6 +89,7 @@ #define CMD_SET_TBIT (1 << 7) /* 1: tran mission bit "Low" */ #define CMD_SET_OPDM (1 << 6) /* 1: open/drain */ #define CMD_SET_CCSH (1 << 5) +#define CMD_SET_DARS (1 << 2) /* Dual Data Rate */ #define CMD_SET_DATW_1 ((0 << 1) | (0 << 0)) /* 1bit */ #define CMD_SET_DATW_4 ((0 << 1) | (1 << 0)) /* 4bit */ #define CMD_SET_DATW_8 ((1 << 1) | (0 << 0)) /* 8bit */ @@ -127,6 +129,10 @@ INT_CCSTO | INT_CRCSTO | INT_WDATTO | \ INT_RDATTO | INT_RBSYTO | INT_RSPTO) +#define INT_ALL (INT_RBSYE | INT_CRSPE | INT_BUFREN | \ + INT_BUFWEN | INT_CMD12DRE | INT_BUFRE | \ + INT_DTRANE | INT_CMD12RBE | INT_CMD12CRE) + /* CE_INT_MASK */ #define MASK_ALL 0x00000000 #define MASK_MCCSDE (1 << 29) @@ -158,6 +164,11 @@ MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO | \ MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO) +#define MASK_CLEAN (INT_ERR_STS | MASK_MRBSYE | MASK_MCRSPE | \ + MASK_MBUFREN | MASK_MBUFWEN | \ + MASK_MCMD12DRE | MASK_MBUFRE | MASK_MDTRANE | \ + MASK_MCMD12RBE | MASK_MCMD12CRE) + /* CE_HOST_STS1 */ #define STS1_CMDSEQ (1 << 31) @@ -195,6 +206,7 @@ enum mmcif_state { STATE_IDLE, STATE_REQUEST, STATE_IOS, + STATE_TIMEOUT, }; enum mmcif_wait_for { @@ -216,6 +228,7 @@ struct sh_mmcif_host { struct clk *hclk; unsigned int clk; int bus_width; + unsigned char timing; bool sd_error; bool dying; long timeout; @@ -230,6 +243,7 @@ struct sh_mmcif_host { int sg_blkidx; bool power; bool card_present; + struct mutex thread_lock; /* DMA support */ struct dma_chan *chan_rx; @@ -253,23 +267,14 @@ static inline void sh_mmcif_bitclr(struct sh_mmcif_host *host, static void mmcif_dma_complete(void *arg) { struct sh_mmcif_host *host = arg; - struct mmc_data *data = host->mrq->data; + struct mmc_request *mrq = host->mrq; dev_dbg(&host->pd->dev, "Command completed\n"); - if (WARN(!data, "%s: NULL data in DMA completion!\n", + if (WARN(!mrq || !mrq->data, "%s: NULL data in DMA completion!\n", dev_name(&host->pd->dev))) return; - if (data->flags & MMC_DATA_READ) - dma_unmap_sg(host->chan_rx->device->dev, - data->sg, data->sg_len, - DMA_FROM_DEVICE); - else - dma_unmap_sg(host->chan_tx->device->dev, - data->sg, data->sg_len, - DMA_TO_DEVICE); - complete(&host->dma_complete); } @@ -423,8 +428,6 @@ static void sh_mmcif_request_dma(struct sh_mmcif_host *host, if (ret < 0) goto ecfgrx; - init_completion(&host->dma_complete); - return; ecfgrx: @@ -520,13 +523,16 @@ static int sh_mmcif_error_manage(struct sh_mmcif_host *host) } if (state2 & STS2_CRC_ERR) { - dev_dbg(&host->pd->dev, ": CRC error\n"); + dev_err(&host->pd->dev, " CRC error: state %u, wait %u\n", + host->state, host->wait_for); ret = -EIO; } else if (state2 & STS2_TIMEOUT_ERR) { - dev_dbg(&host->pd->dev, ": Timeout\n"); + dev_err(&host->pd->dev, " Timeout: state %u, wait %u\n", + host->state, host->wait_for); ret = -ETIMEDOUT; } else { - dev_dbg(&host->pd->dev, ": End/Index error\n"); + dev_dbg(&host->pd->dev, " End/Index error: state %u, wait %u\n", + host->state, host->wait_for); ret = -EIO; } return ret; @@ -549,10 +555,7 @@ static bool sh_mmcif_next_block(struct sh_mmcif_host *host, u32 *p) host->pio_ptr = p; } - if (host->sg_idx == data->sg_len) - return false; - - return true; + return host->sg_idx != data->sg_len; } static void sh_mmcif_single_read(struct sh_mmcif_host *host, @@ -562,7 +565,6 @@ static void sh_mmcif_single_read(struct sh_mmcif_host *host, BLOCK_SIZE_MASK) + 3; host->wait_for = MMCIF_WAIT_FOR_READ; - schedule_delayed_work(&host->timeout_work, host->timeout); /* buf read enable */ sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); @@ -576,6 +578,7 @@ static bool sh_mmcif_read_block(struct sh_mmcif_host *host) if (host->sd_error) { data->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error); return false; } @@ -604,7 +607,7 @@ static void sh_mmcif_multi_read(struct sh_mmcif_host *host, host->sg_idx = 0; host->sg_blkidx = 0; host->pio_ptr = sg_virt(data->sg); - schedule_delayed_work(&host->timeout_work, host->timeout); + sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); } @@ -616,6 +619,7 @@ static bool sh_mmcif_mread_block(struct sh_mmcif_host *host) if (host->sd_error) { data->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error); return false; } @@ -627,7 +631,6 @@ static bool sh_mmcif_mread_block(struct sh_mmcif_host *host) if (!sh_mmcif_next_block(host, p)) return false; - schedule_delayed_work(&host->timeout_work, host->timeout); sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); return true; @@ -640,7 +643,6 @@ static void sh_mmcif_single_write(struct sh_mmcif_host *host, BLOCK_SIZE_MASK) + 3; host->wait_for = MMCIF_WAIT_FOR_WRITE; - schedule_delayed_work(&host->timeout_work, host->timeout); /* buf write enable */ sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); @@ -654,6 +656,7 @@ static bool sh_mmcif_write_block(struct sh_mmcif_host *host) if (host->sd_error) { data->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error); return false; } @@ -682,7 +685,7 @@ static void sh_mmcif_multi_write(struct sh_mmcif_host *host, host->sg_idx = 0; host->sg_blkidx = 0; host->pio_ptr = sg_virt(data->sg); - schedule_delayed_work(&host->timeout_work, host->timeout); + sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); } @@ -694,6 +697,7 @@ static bool sh_mmcif_mwrite_block(struct sh_mmcif_host *host) if (host->sd_error) { data->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error); return false; } @@ -705,7 +709,6 @@ static bool sh_mmcif_mwrite_block(struct sh_mmcif_host *host) if (!sh_mmcif_next_block(host, p)) return false; - schedule_delayed_work(&host->timeout_work, host->timeout); sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); return true; @@ -756,6 +759,7 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host, } switch (opc) { /* RBSY */ + case MMC_SLEEP_AWAKE: case MMC_SWITCH: case MMC_STOP_TRANSMISSION: case MMC_SET_WRITE_PROT: @@ -781,6 +785,17 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host, dev_err(&host->pd->dev, "Unsupported bus width.\n"); break; } + switch (host->timing) { + case MMC_TIMING_UHS_DDR50: + /* + * MMC core will only set this timing, if the host + * advertises the MMC_CAP_UHS_DDR50 capability. MMCIF + * implementations with this capability, e.g. sh73a0, + * will have to set it in their platform data. + */ + tmp |= CMD_SET_DARS; + break; + } } /* DWEN */ if (opc == MMC_WRITE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK) @@ -824,7 +839,7 @@ static int sh_mmcif_data_trans(struct sh_mmcif_host *host, sh_mmcif_single_read(host, mrq); return 0; default: - dev_err(&host->pd->dev, "UNSUPPORTED CMD = d'%08d\n", opc); + dev_err(&host->pd->dev, "Unsupported CMD%d\n", opc); return -EINVAL; } } @@ -838,6 +853,7 @@ static void sh_mmcif_start_cmd(struct sh_mmcif_host *host, switch (opc) { /* response busy check */ + case MMC_SLEEP_AWAKE: case MMC_SWITCH: case MMC_STOP_TRANSMISSION: case MMC_SET_WRITE_PROT: @@ -885,7 +901,6 @@ static void sh_mmcif_stop_cmd(struct sh_mmcif_host *host, } host->wait_for = MMCIF_WAIT_FOR_STOP; - schedule_delayed_work(&host->timeout_work, host->timeout); } static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq) @@ -895,6 +910,7 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq) spin_lock_irqsave(&host->lock, flags); if (host->state != STATE_IDLE) { + dev_dbg(&host->pd->dev, "%s() rejected, state %u\n", __func__, host->state); spin_unlock_irqrestore(&host->lock, flags); mrq->cmd->error = -EAGAIN; mmc_request_done(mmc, mrq); @@ -911,6 +927,7 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq) if ((mrq->cmd->flags & MMC_CMD_MASK) != MMC_CMD_BCR) break; case MMC_APP_CMD: + case SD_IO_RW_DIRECT: host->state = STATE_IDLE; mrq->cmd->error = -ETIMEDOUT; mmc_request_done(mmc, mrq); @@ -957,6 +974,7 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) spin_lock_irqsave(&host->lock, flags); if (host->state != STATE_IDLE) { + dev_dbg(&host->pd->dev, "%s() rejected, state %u\n", __func__, host->state); spin_unlock_irqrestore(&host->lock, flags); return; } @@ -981,7 +999,7 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } } if (host->power) { - pm_runtime_put(&host->pd->dev); + pm_runtime_put_sync(&host->pd->dev); clk_disable(host->hclk); host->power = false; if (ios->power_mode == MMC_POWER_OFF) @@ -1001,6 +1019,7 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) sh_mmcif_clock_control(host, ios->clock); } + host->timing = ios->timing; host->bus_width = ios->bus_width; host->state = STATE_IDLE; } @@ -1038,14 +1057,14 @@ static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host) case MMC_SELECT_CARD: case MMC_APP_CMD: cmd->error = -ETIMEDOUT; - host->sd_error = false; break; default: cmd->error = sh_mmcif_error_manage(host); - dev_dbg(&host->pd->dev, "Cmd(d'%d) error %d\n", - cmd->opcode, cmd->error); break; } + dev_dbg(&host->pd->dev, "CMD%d error %d\n", + cmd->opcode, cmd->error); + host->sd_error = false; return false; } if (!(cmd->flags & MMC_RSP_PRESENT)) { @@ -1058,6 +1077,12 @@ static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host) if (!data) return false; + /* + * Completion can be signalled from DMA callback and error, so, have to + * reset here, before setting .dma_active + */ + init_completion(&host->dma_complete); + if (data->flags & MMC_DATA_READ) { if (host->chan_rx) sh_mmcif_start_dma_rx(host); @@ -1068,34 +1093,47 @@ static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host) if (!host->dma_active) { data->error = sh_mmcif_data_trans(host, host->mrq, cmd->opcode); - if (!data->error) - return true; - return false; + return !data->error; } /* Running in the IRQ thread, can sleep */ time = wait_for_completion_interruptible_timeout(&host->dma_complete, host->timeout); + + if (data->flags & MMC_DATA_READ) + dma_unmap_sg(host->chan_rx->device->dev, + data->sg, data->sg_len, + DMA_FROM_DEVICE); + else + dma_unmap_sg(host->chan_tx->device->dev, + data->sg, data->sg_len, + DMA_TO_DEVICE); + if (host->sd_error) { dev_err(host->mmc->parent, "Error IRQ while waiting for DMA completion!\n"); /* Woken up by an error IRQ: abort DMA */ - if (data->flags & MMC_DATA_READ) - dmaengine_terminate_all(host->chan_rx); - else - dmaengine_terminate_all(host->chan_tx); data->error = sh_mmcif_error_manage(host); } else if (!time) { + dev_err(host->mmc->parent, "DMA timeout!\n"); data->error = -ETIMEDOUT; } else if (time < 0) { + dev_err(host->mmc->parent, + "wait_for_completion_...() error %ld!\n", time); data->error = time; } sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN | BUF_ACC_DMAWEN); host->dma_active = false; - if (data->error) + if (data->error) { data->bytes_xfered = 0; + /* Abort DMA */ + if (data->flags & MMC_DATA_READ) + dmaengine_terminate_all(host->chan_rx); + else + dmaengine_terminate_all(host->chan_tx); + } return false; } @@ -1103,10 +1141,21 @@ static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host) static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) { struct sh_mmcif_host *host = dev_id; - struct mmc_request *mrq = host->mrq; + struct mmc_request *mrq; + bool wait = false; cancel_delayed_work_sync(&host->timeout_work); + mutex_lock(&host->thread_lock); + + mrq = host->mrq; + if (!mrq) { + dev_dbg(&host->pd->dev, "IRQ thread state %u, wait %u: NULL mrq!\n", + host->state, host->wait_for); + mutex_unlock(&host->thread_lock); + return IRQ_HANDLED; + } + /* * All handlers return true, if processing continues, and false, if the * request has to be completed - successfully or not @@ -1114,35 +1163,32 @@ static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) switch (host->wait_for) { case MMCIF_WAIT_FOR_REQUEST: /* We're too late, the timeout has already kicked in */ + mutex_unlock(&host->thread_lock); return IRQ_HANDLED; case MMCIF_WAIT_FOR_CMD: - if (sh_mmcif_end_cmd(host)) - /* Wait for data */ - return IRQ_HANDLED; + /* Wait for data? */ + wait = sh_mmcif_end_cmd(host); break; case MMCIF_WAIT_FOR_MREAD: - if (sh_mmcif_mread_block(host)) - /* Wait for more data */ - return IRQ_HANDLED; + /* Wait for more data? */ + wait = sh_mmcif_mread_block(host); break; case MMCIF_WAIT_FOR_READ: - if (sh_mmcif_read_block(host)) - /* Wait for data end */ - return IRQ_HANDLED; + /* Wait for data end? */ + wait = sh_mmcif_read_block(host); break; case MMCIF_WAIT_FOR_MWRITE: - if (sh_mmcif_mwrite_block(host)) - /* Wait data to write */ - return IRQ_HANDLED; + /* Wait data to write? */ + wait = sh_mmcif_mwrite_block(host); break; case MMCIF_WAIT_FOR_WRITE: - if (sh_mmcif_write_block(host)) - /* Wait for data end */ - return IRQ_HANDLED; + /* Wait for data end? */ + wait = sh_mmcif_write_block(host); break; case MMCIF_WAIT_FOR_STOP: if (host->sd_error) { mrq->stop->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, mrq->stop->error); break; } sh_mmcif_get_cmd12response(host, mrq->stop); @@ -1150,13 +1196,22 @@ static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) break; case MMCIF_WAIT_FOR_READ_END: case MMCIF_WAIT_FOR_WRITE_END: - if (host->sd_error) + if (host->sd_error) { mrq->data->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, mrq->data->error); + } break; default: BUG(); } + if (wait) { + schedule_delayed_work(&host->timeout_work, host->timeout); + /* Wait for more data */ + mutex_unlock(&host->thread_lock); + return IRQ_HANDLED; + } + if (host->wait_for != MMCIF_WAIT_FOR_STOP) { struct mmc_data *data = mrq->data; if (!mrq->cmd->error && data && !data->error) @@ -1165,8 +1220,11 @@ static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) if (mrq->stop && !mrq->cmd->error && (!data || !data->error)) { sh_mmcif_stop_cmd(host, mrq); - if (!mrq->stop->error) + if (!mrq->stop->error) { + schedule_delayed_work(&host->timeout_work, host->timeout); + mutex_unlock(&host->thread_lock); return IRQ_HANDLED; + } } } @@ -1175,6 +1233,8 @@ static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) host->mrq = NULL; mmc_request_done(host->mmc, mrq); + mutex_unlock(&host->thread_lock); + return IRQ_HANDLED; } @@ -1182,56 +1242,22 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id) { struct sh_mmcif_host *host = dev_id; u32 state; - int err = 0; state = sh_mmcif_readl(host->addr, MMCIF_CE_INT); + sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); + sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state & MASK_CLEAN); - if (state & INT_ERR_STS) { - /* error interrupts - process first */ - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state); - err = 1; - } else if (state & INT_RBSYE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, - ~(INT_RBSYE | INT_CRSPE)); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MRBSYE); - } else if (state & INT_CRSPE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_CRSPE); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCRSPE); - } else if (state & INT_BUFREN) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFREN); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); - } else if (state & INT_BUFWEN) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFWEN); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); - } else if (state & INT_CMD12DRE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, - ~(INT_CMD12DRE | INT_CMD12RBE | - INT_CMD12CRE | INT_BUFRE)); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE); - } else if (state & INT_BUFRE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFRE); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFRE); - } else if (state & INT_DTRANE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, - ~(INT_CMD12DRE | INT_CMD12RBE | - INT_CMD12CRE | INT_DTRANE)); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MDTRANE); - } else if (state & INT_CMD12RBE) { - sh_mmcif_writel(host->addr, MMCIF_CE_INT, - ~(INT_CMD12RBE | INT_CMD12CRE)); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE); - } else { - dev_dbg(&host->pd->dev, "Unsupported interrupt: 0x%x\n", state); - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state); - err = 1; - } - if (err) { + if (state & ~MASK_CLEAN) + dev_dbg(&host->pd->dev, "IRQ state = 0x%08x incompletely cleared\n", + state); + + if (state & INT_ERR_STS || state & ~INT_ALL) { host->sd_error = true; - dev_dbg(&host->pd->dev, "int err state = %08x\n", state); + dev_dbg(&host->pd->dev, "int err state = 0x%08x\n", state); } if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) { + if (!host->mrq) + dev_dbg(&host->pd->dev, "NULL IRQ state = 0x%08x\n", state); if (!host->dma_active) return IRQ_WAKE_THREAD; else if (host->sd_error) @@ -1248,11 +1274,24 @@ static void mmcif_timeout_work(struct work_struct *work) struct delayed_work *d = container_of(work, struct delayed_work, work); struct sh_mmcif_host *host = container_of(d, struct sh_mmcif_host, timeout_work); struct mmc_request *mrq = host->mrq; + unsigned long flags; if (host->dying) /* Don't run after mmc_remove_host() */ return; + dev_err(&host->pd->dev, "Timeout waiting for %u on CMD%u\n", + host->wait_for, mrq->cmd->opcode); + + spin_lock_irqsave(&host->lock, flags); + if (host->state == STATE_IDLE) { + spin_unlock_irqrestore(&host->lock, flags); + return; + } + + host->state = STATE_TIMEOUT; + spin_unlock_irqrestore(&host->lock, flags); + /* * Handle races with cancel_delayed_work(), unless * cancel_delayed_work_sync() is used @@ -1306,10 +1345,11 @@ static int sh_mmcif_probe(struct platform_device *pdev) struct sh_mmcif_plat_data *pd = pdev->dev.platform_data; struct resource *res; void __iomem *reg; + const char *name; irq[0] = platform_get_irq(pdev, 0); irq[1] = platform_get_irq(pdev, 1); - if (irq[0] < 0 || irq[1] < 0) { + if (irq[0] < 0) { dev_err(&pdev->dev, "Get irq error\n"); return -ENXIO; } @@ -1329,10 +1369,11 @@ static int sh_mmcif_probe(struct platform_device *pdev) ret = -ENOMEM; goto ealloch; } + mmc_of_parse(mmc); host = mmc_priv(mmc); host->mmc = mmc; host->addr = reg; - host->timeout = 1000; + host->timeout = msecs_to_jiffies(1000); host->pd = pdev; @@ -1341,7 +1382,7 @@ static int sh_mmcif_probe(struct platform_device *pdev) mmc->ops = &sh_mmcif_ops; sh_mmcif_init_ocr(host); - mmc->caps = MMC_CAP_MMC_HIGHSPEED; + mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_WAIT_WHILE_BUSY; if (pd && pd->caps) mmc->caps |= pd->caps; mmc->max_segs = 32; @@ -1374,15 +1415,19 @@ static int sh_mmcif_probe(struct platform_device *pdev) sh_mmcif_sync_reset(host); sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL); - ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:error", host); + name = irq[1] < 0 ? dev_name(&pdev->dev) : "sh_mmc:error"; + ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, name, host); if (ret) { - dev_err(&pdev->dev, "request_irq error (sh_mmc:error)\n"); + dev_err(&pdev->dev, "request_irq error (%s)\n", name); goto ereqirq0; } - ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:int", host); - if (ret) { - dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n"); - goto ereqirq1; + if (irq[1] >= 0) { + ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt, + 0, "sh_mmc:int", host); + if (ret) { + dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n"); + goto ereqirq1; + } } if (pd && pd->use_cd_gpio) { @@ -1391,6 +1436,8 @@ static int sh_mmcif_probe(struct platform_device *pdev) goto erqcd; } + mutex_init(&host->thread_lock); + clk_disable(host->hclk); ret = mmc_add_host(mmc); if (ret < 0) @@ -1404,10 +1451,9 @@ static int sh_mmcif_probe(struct platform_device *pdev) return ret; emmcaddh: - if (pd && pd->use_cd_gpio) - mmc_gpio_free_cd(mmc); erqcd: - free_irq(irq[1], host); + if (irq[1] >= 0) + free_irq(irq[1], host); ereqirq1: free_irq(irq[0], host); ereqirq0: @@ -1427,7 +1473,6 @@ ealloch: static int sh_mmcif_remove(struct platform_device *pdev) { struct sh_mmcif_host *host = platform_get_drvdata(pdev); - struct sh_mmcif_plat_data *pd = pdev->dev.platform_data; int irq[2]; host->dying = true; @@ -1436,9 +1481,6 @@ static int sh_mmcif_remove(struct platform_device *pdev) dev_pm_qos_hide_latency_limit(&pdev->dev); - if (pd && pd->use_cd_gpio) - mmc_gpio_free_cd(host->mmc); - mmc_remove_host(host->mmc); sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL); @@ -1456,7 +1498,8 @@ static int sh_mmcif_remove(struct platform_device *pdev) irq[1] = platform_get_irq(pdev, 1); free_irq(irq[0], host); - free_irq(irq[1], host); + if (irq[1] >= 0) + free_irq(irq[1], host); platform_set_drvdata(pdev, NULL); diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index 524a7f773820..fe90853900b4 100644 --- a/drivers/mmc/host/sh_mobile_sdhi.c +++ b/drivers/mmc/host/sh_mobile_sdhi.c @@ -23,6 +23,7 @@ #include <linux/slab.h> #include <linux/mod_devicetable.h> #include <linux/module.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/mmc/host.h> #include <linux/mmc/sh_mobile_sdhi.h> @@ -32,6 +33,16 @@ #include "tmio_mmc.h" +struct sh_mobile_sdhi_of_data { + unsigned long tmio_flags; +}; + +static const struct sh_mobile_sdhi_of_data sh_mobile_sdhi_of_cfg[] = { + { + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT, + }, +}; + struct sh_mobile_sdhi { struct clk *clk; struct tmio_mmc_data mmc_data; @@ -117,8 +128,18 @@ static const struct sh_mobile_sdhi_ops sdhi_ops = { .cd_wakeup = sh_mobile_sdhi_cd_wakeup, }; +static const struct of_device_id sh_mobile_sdhi_of_match[] = { + { .compatible = "renesas,shmobile-sdhi" }, + { .compatible = "renesas,sh7372-sdhi" }, + { .compatible = "renesas,r8a7740-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, + {}, +}; +MODULE_DEVICE_TABLE(of, sh_mobile_sdhi_of_match); + static int sh_mobile_sdhi_probe(struct platform_device *pdev) { + const struct of_device_id *of_id = + of_match_device(sh_mobile_sdhi_of_match, &pdev->dev); struct sh_mobile_sdhi *priv; struct tmio_mmc_data *mmc_data; struct sh_mobile_sdhi_info *p = pdev->dev.platform_data; @@ -126,7 +147,7 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) int irq, ret, i = 0; bool multiplexed_isr = true; - priv = kzalloc(sizeof(struct sh_mobile_sdhi), GFP_KERNEL); + priv = devm_kzalloc(&pdev->dev, sizeof(struct sh_mobile_sdhi), GFP_KERNEL); if (priv == NULL) { dev_err(&pdev->dev, "kzalloc failed\n"); return -ENOMEM; @@ -135,15 +156,14 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) mmc_data = &priv->mmc_data; if (p) { - p->pdata = mmc_data; if (p->init) { ret = p->init(pdev, &sdhi_ops); if (ret) - goto einit; + return ret; } } - priv->clk = clk_get(&pdev->dev, NULL); + priv->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(priv->clk)) { ret = PTR_ERR(priv->clk); dev_err(&pdev->dev, "cannot get clock: %d\n", ret); @@ -153,10 +173,9 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) mmc_data->clk_enable = sh_mobile_sdhi_clk_enable; mmc_data->clk_disable = sh_mobile_sdhi_clk_disable; mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED; + mmc_data->write16_hook = sh_mobile_sdhi_write16_hook; if (p) { mmc_data->flags = p->tmio_flags; - if (mmc_data->flags & TMIO_MMC_HAS_IDLE_WAIT) - mmc_data->write16_hook = sh_mobile_sdhi_write16_hook; mmc_data->ocr_mask = p->tmio_ocr_mask; mmc_data->capabilities |= p->tmio_caps; mmc_data->capabilities2 |= p->tmio_caps2; @@ -187,6 +206,11 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) */ mmc_data->flags |= TMIO_MMC_SDIO_IRQ; + if (of_id && of_id->data) { + const struct sh_mobile_sdhi_of_data *of_data = of_id->data; + mmc_data->flags |= of_data->tmio_flags; + } + ret = tmio_mmc_host_probe(&host, pdev, mmc_data); if (ret < 0) goto eprobe; @@ -199,33 +223,33 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT); if (irq >= 0) { multiplexed_isr = false; - ret = request_irq(irq, tmio_mmc_card_detect_irq, 0, + ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_card_detect_irq, 0, dev_name(&pdev->dev), host); if (ret) - goto eirq_card_detect; + goto eirq; } irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO); if (irq >= 0) { multiplexed_isr = false; - ret = request_irq(irq, tmio_mmc_sdio_irq, 0, + ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_sdio_irq, 0, dev_name(&pdev->dev), host); if (ret) - goto eirq_sdio; + goto eirq; } irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDCARD); if (irq >= 0) { multiplexed_isr = false; - ret = request_irq(irq, tmio_mmc_sdcard_irq, 0, + ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_sdcard_irq, 0, dev_name(&pdev->dev), host); if (ret) - goto eirq_sdcard; + goto eirq; } else if (!multiplexed_isr) { dev_err(&pdev->dev, "Principal SD-card IRQ is missing among named interrupts\n"); ret = irq; - goto eirq_sdcard; + goto eirq; } if (multiplexed_isr) { @@ -234,15 +258,15 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) if (irq < 0) break; i++; - ret = request_irq(irq, tmio_mmc_irq, 0, + ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_irq, 0, dev_name(&pdev->dev), host); if (ret) - goto eirq_multiplexed; + goto eirq; } /* There must be at least one IRQ source */ if (!i) - goto eirq_multiplexed; + goto eirq; } dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n", @@ -252,28 +276,12 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) return ret; -eirq_multiplexed: - while (i--) { - irq = platform_get_irq(pdev, i); - free_irq(irq, host); - } -eirq_sdcard: - irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO); - if (irq >= 0) - free_irq(irq, host); -eirq_sdio: - irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT); - if (irq >= 0) - free_irq(irq, host); -eirq_card_detect: +eirq: tmio_mmc_host_remove(host); eprobe: - clk_put(priv->clk); eclkget: if (p && p->cleanup) p->cleanup(pdev); -einit: - kfree(priv); return ret; } @@ -281,29 +289,13 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev) { struct mmc_host *mmc = platform_get_drvdata(pdev); struct tmio_mmc_host *host = mmc_priv(mmc); - struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data); struct sh_mobile_sdhi_info *p = pdev->dev.platform_data; - int i = 0, irq; - - if (p) - p->pdata = NULL; tmio_mmc_host_remove(host); - while (1) { - irq = platform_get_irq(pdev, i++); - if (irq < 0) - break; - free_irq(irq, host); - } - - clk_put(priv->clk); - if (p && p->cleanup) p->cleanup(pdev); - kfree(priv); - return 0; } @@ -314,12 +306,6 @@ static const struct dev_pm_ops tmio_mmc_dev_pm_ops = { .runtime_resume = tmio_mmc_host_runtime_resume, }; -static const struct of_device_id sh_mobile_sdhi_of_match[] = { - { .compatible = "renesas,shmobile-sdhi" }, - { } -}; -MODULE_DEVICE_TABLE(of, sh_mobile_sdhi_of_match); - static struct platform_driver sh_mobile_sdhi_driver = { .driver = { .name = "sh_mobile_sdhi", diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index 50bf495a988b..f508ecb5b8a7 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -43,6 +43,7 @@ #include <linux/platform_device.h> #include <linux/pm_qos.h> #include <linux/pm_runtime.h> +#include <linux/regulator/consumer.h> #include <linux/scatterlist.h> #include <linux/spinlock.h> #include <linux/workqueue.h> @@ -155,6 +156,7 @@ static void tmio_mmc_set_clock(struct tmio_mmc_host *host, int new_clock) host->set_clk_div(host->pdev, (clk>>22) & 1); sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, clk & 0x1ff); + msleep(10); } static void tmio_mmc_clk_stop(struct tmio_mmc_host *host) @@ -768,16 +770,48 @@ static int tmio_mmc_clk_update(struct mmc_host *mmc) return ret; } -static void tmio_mmc_set_power(struct tmio_mmc_host *host, struct mmc_ios *ios) +static void tmio_mmc_power_on(struct tmio_mmc_host *host, unsigned short vdd) { struct mmc_host *mmc = host->mmc; + int ret = 0; + + /* .set_ios() is returning void, so, no chance to report an error */ if (host->set_pwr) - host->set_pwr(host->pdev, ios->power_mode != MMC_POWER_OFF); + host->set_pwr(host->pdev, 1); + + if (!IS_ERR(mmc->supply.vmmc)) { + ret = mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd); + /* + * Attention: empiric value. With a b43 WiFi SDIO card this + * delay proved necessary for reliable card-insertion probing. + * 100us were not enough. Is this the same 140us delay, as in + * tmio_mmc_set_ios()? + */ + udelay(200); + } + /* + * It seems, VccQ should be switched on after Vcc, this is also what the + * omap_hsmmc.c driver does. + */ + if (!IS_ERR(mmc->supply.vqmmc) && !ret) { + regulator_enable(mmc->supply.vqmmc); + udelay(200); + } +} + +static void tmio_mmc_power_off(struct tmio_mmc_host *host) +{ + struct mmc_host *mmc = host->mmc; + + if (!IS_ERR(mmc->supply.vqmmc)) + regulator_disable(mmc->supply.vqmmc); + if (!IS_ERR(mmc->supply.vmmc)) - /* Errors ignored... */ - mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, - ios->power_mode ? ios->vdd : 0); + mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0); + + if (host->set_pwr) + host->set_pwr(host->pdev, 0); } /* Set MMC clock / power. @@ -828,18 +862,20 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (!host->power) { tmio_mmc_clk_update(mmc); pm_runtime_get_sync(dev); - host->power = true; } tmio_mmc_set_clock(host, ios->clock); - /* power up SD bus */ - tmio_mmc_set_power(host, ios); + if (!host->power) { + /* power up SD card and the bus */ + tmio_mmc_power_on(host, ios->vdd); + host->power = true; + } /* start bus clock */ tmio_mmc_clk_start(host); } else if (ios->power_mode != MMC_POWER_UP) { - if (ios->power_mode == MMC_POWER_OFF) - tmio_mmc_set_power(host, ios); if (host->power) { struct tmio_mmc_data *pdata = host->pdata; + if (ios->power_mode == MMC_POWER_OFF) + tmio_mmc_power_off(host); tmio_mmc_clk_stop(host); host->power = false; pm_runtime_put(dev); @@ -918,6 +954,17 @@ static void tmio_mmc_init_ocr(struct tmio_mmc_host *host) dev_warn(mmc_dev(mmc), "Platform OCR mask is ignored\n"); } +static void tmio_mmc_of_parse(struct platform_device *pdev, + struct tmio_mmc_data *pdata) +{ + const struct device_node *np = pdev->dev.of_node; + if (!np) + return; + + if (of_get_property(np, "toshiba,mmc-wrprotect-disable", NULL)) + pdata->flags |= TMIO_MMC_WRPROTECT_DISABLE; +} + int tmio_mmc_host_probe(struct tmio_mmc_host **host, struct platform_device *pdev, struct tmio_mmc_data *pdata) @@ -928,6 +975,11 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, int ret; u32 irq_mask = TMIO_MASK_CMD; + tmio_mmc_of_parse(pdev, pdata); + + if (!(pdata->flags & TMIO_MMC_HAS_IDLE_WAIT)) + pdata->write16_hook = NULL; + res_ctl = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res_ctl) return -EINVAL; @@ -936,6 +988,8 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, if (!mmc) return -ENOMEM; + mmc_of_parse(mmc); + pdata->dev = &pdev->dev; _host = mmc_priv(mmc); _host->pdata = pdata; @@ -956,7 +1010,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, } mmc->ops = &tmio_mmc_ops; - mmc->caps = MMC_CAP_4_BIT_DATA | pdata->capabilities; + mmc->caps |= MMC_CAP_4_BIT_DATA | pdata->capabilities; mmc->caps2 = pdata->capabilities2; mmc->max_segs = 32; mmc->max_blk_size = 512; @@ -968,7 +1022,8 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, _host->native_hotplug = !(pdata->flags & TMIO_MMC_USE_GPIO_CD || mmc->caps & MMC_CAP_NEEDS_POLL || - mmc->caps & MMC_CAP_NONREMOVABLE); + mmc->caps & MMC_CAP_NONREMOVABLE || + mmc->slot.cd_irq >= 0); _host->power = false; pm_runtime_enable(&pdev->dev); @@ -1060,16 +1115,8 @@ EXPORT_SYMBOL(tmio_mmc_host_probe); void tmio_mmc_host_remove(struct tmio_mmc_host *host) { struct platform_device *pdev = host->pdev; - struct tmio_mmc_data *pdata = host->pdata; struct mmc_host *mmc = host->mmc; - if (pdata->flags & TMIO_MMC_USE_GPIO_CD) - /* - * This means we can miss a card-eject, but this is anyway - * possible, because of delayed processing of hotplug events. - */ - mmc_gpio_free_cd(mmc); - if (!host->native_hotplug) pm_runtime_get_sync(&pdev->dev); diff --git a/drivers/mmc/host/wmt-sdmmc.c b/drivers/mmc/host/wmt-sdmmc.c index 154f0e8e931c..c6d001509e5a 100644 --- a/drivers/mmc/host/wmt-sdmmc.c +++ b/drivers/mmc/host/wmt-sdmmc.c @@ -1012,7 +1012,7 @@ static const struct dev_pm_ops wmt_mci_pm = { static struct platform_driver wmt_mci_driver = { .probe = wmt_mci_probe, - .remove = __exit_p(wmt_mci_remove), + .remove = wmt_mci_remove, .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h index d83af39815ab..99bf3e665997 100644 --- a/include/linux/mfd/tmio.h +++ b/include/linux/mfd/tmio.h @@ -65,12 +65,6 @@ */ #define TMIO_MMC_SDIO_IRQ (1 << 2) /* - * Some platforms can detect card insertion events with controller powered - * down, using a GPIO IRQ, in which case they have to fill in cd_irq, cd_gpio, - * and cd_flags fields of struct tmio_mmc_data. - */ -#define TMIO_MMC_HAS_COLD_CD (1 << 3) -/* * Some controllers require waiting for the SD bus to become * idle before writing to some registers. */ @@ -117,18 +111,6 @@ struct tmio_mmc_data { }; /* - * This function is deprecated and will be removed soon. Please, convert your - * platform to use drivers/mmc/core/cd-gpio.c - */ -#include <linux/mmc/host.h> -static inline void tmio_mmc_cd_wakeup(struct tmio_mmc_data *pdata) -{ - if (pdata) - mmc_detect_change(dev_get_drvdata(pdata->dev), - msecs_to_jiffies(100)); -} - -/* * data for the NAND controller */ struct tmio_nand_data { diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 5c69315d60cc..61b2c30c903b 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -53,6 +53,9 @@ struct mmc_ext_csd { u8 part_config; u8 cache_ctrl; u8 rst_n_function; + u8 max_packed_writes; + u8 max_packed_reads; + u8 packed_event_en; unsigned int part_time; /* Units: ms */ unsigned int sa_timeout; /* Units: 100ns */ unsigned int generic_cmd6_time; /* Units: 10ms */ @@ -83,7 +86,7 @@ struct mmc_ext_csd { unsigned int data_tag_unit_size; /* DATA TAG UNIT size */ unsigned int boot_ro_lock; /* ro lock support */ bool boot_ro_lockable; - u8 raw_exception_status; /* 53 */ + u8 raw_exception_status; /* 54 */ u8 raw_partition_support; /* 160 */ u8 raw_rpmb_size_mult; /* 168 */ u8 raw_erased_mem_count; /* 181 */ @@ -187,6 +190,18 @@ struct sdio_func_tuple; #define SDIO_MAX_FUNCS 7 +enum mmc_blk_status { + MMC_BLK_SUCCESS = 0, + MMC_BLK_PARTIAL, + MMC_BLK_CMD_ERR, + MMC_BLK_RETRY, + MMC_BLK_ABORT, + MMC_BLK_DATA_ERR, + MMC_BLK_ECC_ERR, + MMC_BLK_NOMEDIUM, + MMC_BLK_NEW_REQUEST, +}; + /* The number of MMC physical partitions. These consist of: * boot partitions (2), general purpose partitions (4) in MMC v4.4. */ @@ -295,6 +310,11 @@ static inline void mmc_part_add(struct mmc_card *card, unsigned int size, card->nr_parts++; } +static inline bool mmc_large_sector(struct mmc_card *card) +{ + return card->ext_csd.data_sector_size == 4096; +} + /* * The world is not perfect and supplies us with broken mmc/sdio devices. * For at least some of these bugs we need a work-around. diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 5bf7c2274fcb..39613b9a6fc5 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -18,6 +18,9 @@ struct mmc_request; struct mmc_command { u32 opcode; u32 arg; +#define MMC_CMD23_ARG_REL_WR (1 << 31) +#define MMC_CMD23_ARG_PACKED ((0 << 31) | (1 << 30)) +#define MMC_CMD23_ARG_TAG_REQ (1 << 29) u32 resp[4]; unsigned int flags; /* expected response type */ #define MMC_RSP_PRESENT (1 << 0) @@ -120,6 +123,7 @@ struct mmc_data { s32 host_cookie; /* host private data */ }; +struct mmc_host; struct mmc_request { struct mmc_command *sbc; /* SET_BLOCK_COUNT for multiblock */ struct mmc_command *cmd; @@ -128,9 +132,9 @@ struct mmc_request { struct completion completion; void (*done)(struct mmc_request *);/* completion function */ + struct mmc_host *host; }; -struct mmc_host; struct mmc_card; struct mmc_async_req; @@ -147,6 +151,7 @@ extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *, extern void mmc_start_bkops(struct mmc_card *card, bool from_exception); extern int __mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int, bool); extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int); +extern int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd); #define MMC_ERASE_ARG 0x00000000 #define MMC_SECURE_ERASE_ARG 0x80000000 diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 34be4f47293c..198f0fa44e9f 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -209,8 +209,10 @@ struct dw_mci_dma_ops { #define DW_MCI_QUIRK_HIGHSPEED BIT(2) /* Unreliable card detection */ #define DW_MCI_QUIRK_BROKEN_CARD_DETECTION BIT(3) -/* Write Protect detection not available */ -#define DW_MCI_QUIRK_NO_WRITE_PROTECT BIT(4) + +/* Slot level quirks */ +/* This slot has no write protect */ +#define DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT BIT(0) struct dma_pdata; diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 61a10c17aabd..d6f20cc6415e 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -131,9 +131,11 @@ struct mmc_host_ops { int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios); + /* Check if the card is pulling dat[0:3] low */ + int (*card_busy)(struct mmc_host *host); + /* The tuning command opcode value is different for SD and eMMC cards */ int (*execute_tuning)(struct mmc_host *host, u32 opcode); - void (*enable_preset_value)(struct mmc_host *host, bool enable); int (*select_drive_strength)(unsigned int max_dtr, int host_drv, int card_drv); void (*hw_reset)(struct mmc_host *host); void (*card_event)(struct mmc_host *host); @@ -170,6 +172,22 @@ struct mmc_slot { void *handler_priv; }; +/** + * mmc_context_info - synchronization details for mmc context + * @is_done_rcv wake up reason was done request + * @is_new_req wake up reason was new request + * @is_waiting_last_req mmc context waiting for single running request + * @wait wait queue + * @lock lock to protect data fields + */ +struct mmc_context_info { + bool is_done_rcv; + bool is_new_req; + bool is_waiting_last_req; + wait_queue_head_t wait; + spinlock_t lock; +}; + struct regulator; struct mmc_supply { @@ -258,6 +276,10 @@ struct mmc_host { #define MMC_CAP2_HC_ERASE_SZ (1 << 9) /* High-capacity erase size */ #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */ #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */ +#define MMC_CAP2_PACKED_RD (1 << 12) /* Allow packed read */ +#define MMC_CAP2_PACKED_WR (1 << 13) /* Allow packed write */ +#define MMC_CAP2_PACKED_CMD (MMC_CAP2_PACKED_RD | \ + MMC_CAP2_PACKED_WR) mmc_pm_flag_t pm_caps; /* supported pm features */ @@ -331,6 +353,7 @@ struct mmc_host { struct dentry *debugfs_root; struct mmc_async_req *areq; /* active async req */ + struct mmc_context_info context_info; /* async synchronization info */ #ifdef CONFIG_FAIL_MMC_REQUEST struct fault_attr fail_mmc_request; @@ -341,10 +364,11 @@ struct mmc_host { unsigned long private[0] ____cacheline_aligned; }; -extern struct mmc_host *mmc_alloc_host(int extra, struct device *); -extern int mmc_add_host(struct mmc_host *); -extern void mmc_remove_host(struct mmc_host *); -extern void mmc_free_host(struct mmc_host *); +struct mmc_host *mmc_alloc_host(int extra, struct device *); +int mmc_add_host(struct mmc_host *); +void mmc_remove_host(struct mmc_host *); +void mmc_free_host(struct mmc_host *); +void mmc_of_parse(struct mmc_host *host); static inline void *mmc_priv(struct mmc_host *host) { @@ -357,16 +381,16 @@ static inline void *mmc_priv(struct mmc_host *host) #define mmc_classdev(x) (&(x)->class_dev) #define mmc_hostname(x) (dev_name(&(x)->class_dev)) -extern int mmc_suspend_host(struct mmc_host *); -extern int mmc_resume_host(struct mmc_host *); +int mmc_suspend_host(struct mmc_host *); +int mmc_resume_host(struct mmc_host *); -extern int mmc_power_save_host(struct mmc_host *host); -extern int mmc_power_restore_host(struct mmc_host *host); +int mmc_power_save_host(struct mmc_host *host); +int mmc_power_restore_host(struct mmc_host *host); -extern void mmc_detect_change(struct mmc_host *, unsigned long delay); -extern void mmc_request_done(struct mmc_host *, struct mmc_request *); +void mmc_detect_change(struct mmc_host *, unsigned long delay); +void mmc_request_done(struct mmc_host *, struct mmc_request *); -extern int mmc_cache_ctrl(struct mmc_host *, u8); +int mmc_cache_ctrl(struct mmc_host *, u8); static inline void mmc_signal_sdio_irq(struct mmc_host *host) { @@ -434,6 +458,19 @@ static inline int mmc_boot_partition_access(struct mmc_host *host) return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC); } +static inline int mmc_host_uhs(struct mmc_host *host) +{ + return host->caps & + (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | + MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | + MMC_CAP_UHS_DDR50); +} + +static inline int mmc_host_packed_wr(struct mmc_host *host) +{ + return host->caps2 & MMC_CAP2_PACKED_WR; +} + #ifdef CONFIG_MMC_CLKGATE void mmc_host_clk_hold(struct mmc_host *host); void mmc_host_clk_release(struct mmc_host *host); diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 94d532e41c61..50bcde3677ca 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -139,7 +139,7 @@ static inline bool mmc_op_multi(u32 opcode) #define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */ #define R1_READY_FOR_DATA (1 << 8) /* sx, a */ #define R1_SWITCH_ERROR (1 << 7) /* sx, c */ -#define R1_EXCEPTION_EVENT (1 << 6) /* sx, a */ +#define R1_EXCEPTION_EVENT (1 << 6) /* sr, a */ #define R1_APP_CMD (1 << 5) /* sr, c */ #define R1_STATE_IDLE 0 @@ -275,7 +275,10 @@ struct _mmc_csd { #define EXT_CSD_FLUSH_CACHE 32 /* W */ #define EXT_CSD_CACHE_CTRL 33 /* R/W */ #define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */ -#define EXT_CSD_EXP_EVENTS_STATUS 54 /* RO */ +#define EXT_CSD_PACKED_FAILURE_INDEX 35 /* RO */ +#define EXT_CSD_PACKED_CMD_STATUS 36 /* RO */ +#define EXT_CSD_EXP_EVENTS_STATUS 54 /* RO, 2 bytes */ +#define EXT_CSD_EXP_EVENTS_CTRL 56 /* R/W, 2 bytes */ #define EXT_CSD_DATA_SECTOR_SIZE 61 /* R */ #define EXT_CSD_GP_SIZE_MULT 143 /* R/W */ #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ @@ -324,6 +327,8 @@ struct _mmc_csd { #define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */ #define EXT_CSD_TAG_UNIT_SIZE 498 /* RO */ #define EXT_CSD_DATA_TAG_SUPPORT 499 /* RO */ +#define EXT_CSD_MAX_PACKED_WRITES 500 /* RO */ +#define EXT_CSD_MAX_PACKED_READS 501 /* RO */ #define EXT_CSD_BKOPS_SUPPORT 502 /* RO */ #define EXT_CSD_HPI_FEATURES 503 /* RO */ @@ -385,6 +390,9 @@ struct _mmc_csd { #define EXT_CSD_PWR_CL_4BIT_MASK 0x0F /* 8 bit PWR CLS */ #define EXT_CSD_PWR_CL_8BIT_SHIFT 4 #define EXT_CSD_PWR_CL_4BIT_SHIFT 0 + +#define EXT_CSD_PACKED_EVENT_EN BIT(3) + /* * EXCEPTION_EVENT_STATUS field */ @@ -393,6 +401,9 @@ struct _mmc_csd { #define EXT_CSD_SYSPOOL_EXHAUSTED BIT(2) #define EXT_CSD_PACKED_FAILURE BIT(3) +#define EXT_CSD_PACKED_GENERIC_ERROR BIT(0) +#define EXT_CSD_PACKED_INDEXED_ERROR BIT(1) + /* * BKOPS status level */ diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 4bbc3301fbbf..b838ffc49e4a 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -94,6 +94,7 @@ struct sdhci_host { #define SDHCI_QUIRK2_HOST_NO_CMD23 (1<<1) /* The system physically doesn't support 1.8v, even if the host does */ #define SDHCI_QUIRK2_NO_1_8_V (1<<2) +#define SDHCI_QUIRK2_PRESET_VALUE_BROKEN (1<<3) int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ diff --git a/include/linux/mmc/sh_mobile_sdhi.h b/include/linux/mmc/sh_mobile_sdhi.h index b65679ffa880..b76bcf0621f6 100644 --- a/include/linux/mmc/sh_mobile_sdhi.h +++ b/include/linux/mmc/sh_mobile_sdhi.h @@ -4,7 +4,6 @@ #include <linux/types.h> struct platform_device; -struct tmio_mmc_data; #define SH_MOBILE_SDHI_IRQ_CARD_DETECT "card_detect" #define SH_MOBILE_SDHI_IRQ_SDCARD "sdcard" @@ -26,7 +25,6 @@ struct sh_mobile_sdhi_info { unsigned long tmio_caps2; u32 tmio_ocr_mask; /* available MMC voltages */ unsigned int cd_gpio; - struct tmio_mmc_data *pdata; void (*set_pwr)(struct platform_device *pdev, int state); int (*get_cd)(struct platform_device *pdev); diff --git a/include/linux/platform_data/mmc-esdhc-imx.h b/include/linux/platform_data/mmc-esdhc-imx.h index aaf97481f413..b4a0521ce411 100644 --- a/include/linux/platform_data/mmc-esdhc-imx.h +++ b/include/linux/platform_data/mmc-esdhc-imx.h @@ -39,5 +39,6 @@ struct esdhc_platform_data { unsigned int cd_gpio; enum wp_types wp_type; enum cd_types cd_type; + int max_bus_width; }; #endif /* __ASM_ARCH_IMX_ESDHC_H */ diff --git a/include/linux/platform_data/mmc-sdhci-tegra.h b/include/linux/platform_data/mmc-sdhci-tegra.h deleted file mode 100644 index 8f8430697686..000000000000 --- a/include/linux/platform_data/mmc-sdhci-tegra.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * Copyright (C) 2009 Palm, Inc. - * Author: Yvonne Yip <y@palm.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ -#ifndef __PLATFORM_DATA_TEGRA_SDHCI_H -#define __PLATFORM_DATA_TEGRA_SDHCI_H - -#include <linux/mmc/host.h> - -struct tegra_sdhci_platform_data { - int cd_gpio; - int wp_gpio; - int power_gpio; - int is_8bit; - int pm_flags; -}; - -#endif |