diff options
Diffstat (limited to 'sound/soc/sh')
| -rw-r--r-- | sound/soc/sh/Kconfig | 7 | ||||
| -rw-r--r-- | sound/soc/sh/Makefile | 3 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/Makefile | 2 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/adg.c | 234 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/core.c | 861 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/gen.c | 280 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/rsnd.h | 302 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/scu.c | 236 | ||||
| -rw-r--r-- | sound/soc/sh/rcar/ssi.c | 728 |
9 files changed, 2653 insertions, 0 deletions
diff --git a/sound/soc/sh/Kconfig b/sound/soc/sh/Kconfig index 6bcb1164d599..56d8ff6a402d 100644 --- a/sound/soc/sh/Kconfig +++ b/sound/soc/sh/Kconfig @@ -34,6 +34,13 @@ config SND_SOC_SH4_SIU select SH_DMAE select FW_LOADER +config SND_SOC_RCAR + tristate "R-Car series SRU/SCU/SSIU/SSI support" + select SND_SIMPLE_CARD + select RCAR_CLK_ADG + help + This option enables R-Car SUR/SCU/SSIU/SSI sound support + ## ## Boards ## diff --git a/sound/soc/sh/Makefile b/sound/soc/sh/Makefile index 849b387d17d9..aaf3dcd1ee2a 100644 --- a/sound/soc/sh/Makefile +++ b/sound/soc/sh/Makefile @@ -12,6 +12,9 @@ obj-$(CONFIG_SND_SOC_SH4_SSI) += snd-soc-ssi.o obj-$(CONFIG_SND_SOC_SH4_FSI) += snd-soc-fsi.o obj-$(CONFIG_SND_SOC_SH4_SIU) += snd-soc-siu.o +## audio units for R-Car +obj-$(CONFIG_SND_SOC_RCAR) += rcar/ + ## boards snd-soc-sh7760-ac97-objs := sh7760-ac97.o snd-soc-migor-objs := migor.o diff --git a/sound/soc/sh/rcar/Makefile b/sound/soc/sh/rcar/Makefile new file mode 100644 index 000000000000..0ff492df7929 --- /dev/null +++ b/sound/soc/sh/rcar/Makefile @@ -0,0 +1,2 @@ +snd-soc-rcar-objs := core.o gen.o scu.o adg.o ssi.o +obj-$(CONFIG_SND_SOC_RCAR) += snd-soc-rcar.o
\ No newline at end of file diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c new file mode 100644 index 000000000000..d80deb7ccf13 --- /dev/null +++ b/sound/soc/sh/rcar/adg.c @@ -0,0 +1,234 @@ +/* + * Helper routines for R-Car sound ADG. + * + * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <linux/sh_clk.h> +#include <mach/clock.h> +#include "rsnd.h" + +#define CLKA 0 +#define CLKB 1 +#define CLKC 2 +#define CLKI 3 +#define CLKMAX 4 + +struct rsnd_adg { + struct clk *clk[CLKMAX]; + + int rate_of_441khz_div_6; + int rate_of_48khz_div_6; +}; + +#define for_each_rsnd_clk(pos, adg, i) \ + for (i = 0, (pos) = adg->clk[i]; \ + i < CLKMAX; \ + i++, (pos) = adg->clk[i]) +#define rsnd_priv_to_adg(priv) ((struct rsnd_adg *)(priv)->adg) + +static enum rsnd_reg rsnd_adg_ssi_reg_get(int id) +{ + enum rsnd_reg reg; + + /* + * SSI 8 is not connected to ADG. + * it works with SSI 7 + */ + if (id == 8) + return RSND_REG_MAX; + + if (0 <= id && id <= 3) + reg = RSND_REG_AUDIO_CLK_SEL0; + else if (4 <= id && id <= 7) + reg = RSND_REG_AUDIO_CLK_SEL1; + else + reg = RSND_REG_AUDIO_CLK_SEL2; + + return reg; +} + +int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + enum rsnd_reg reg; + int id; + + /* + * "mod" = "ssi" here. + * we can get "ssi id" from mod + */ + id = rsnd_mod_id(mod); + reg = rsnd_adg_ssi_reg_get(id); + + rsnd_write(priv, mod, reg, 0); + + return 0; +} + +int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct rsnd_adg *adg = rsnd_priv_to_adg(priv); + struct device *dev = rsnd_priv_to_dev(priv); + struct clk *clk; + enum rsnd_reg reg; + int id, shift, i; + u32 data; + int sel_table[] = { + [CLKA] = 0x1, + [CLKB] = 0x2, + [CLKC] = 0x3, + [CLKI] = 0x0, + }; + + dev_dbg(dev, "request clock = %d\n", rate); + + /* + * find suitable clock from + * AUDIO_CLKA/AUDIO_CLKB/AUDIO_CLKC/AUDIO_CLKI. + */ + data = 0; + for_each_rsnd_clk(clk, adg, i) { + if (rate == clk_get_rate(clk)) { + data = sel_table[i]; + goto found_clock; + } + } + + /* + * find 1/6 clock from BRGA/BRGB + */ + if (rate == adg->rate_of_441khz_div_6) { + data = 0x10; + goto found_clock; + } + + if (rate == adg->rate_of_48khz_div_6) { + data = 0x20; + goto found_clock; + } + + return -EIO; + +found_clock: + + /* + * This "mod" = "ssi" here. + * we can get "ssi id" from mod + */ + id = rsnd_mod_id(mod); + reg = rsnd_adg_ssi_reg_get(id); + + dev_dbg(dev, "ADG: ssi%d selects clk%d = %d", id, i, rate); + + /* + * Enable SSIx clock + */ + shift = (id % 4) * 8; + + rsnd_bset(priv, mod, reg, + 0xFF << shift, + data << shift); + + return 0; +} + +static void rsnd_adg_ssi_clk_init(struct rsnd_priv *priv, struct rsnd_adg *adg) +{ + struct clk *clk; + unsigned long rate; + u32 ckr; + int i; + int brg_table[] = { + [CLKA] = 0x0, + [CLKB] = 0x1, + [CLKC] = 0x4, + [CLKI] = 0x2, + }; + + /* + * This driver is assuming that AUDIO_CLKA/AUDIO_CLKB/AUDIO_CLKC + * have 44.1kHz or 48kHz base clocks for now. + * + * SSI itself can divide parent clock by 1/1 - 1/16 + * So, BRGA outputs 44.1kHz base parent clock 1/32, + * and, BRGB outputs 48.0kHz base parent clock 1/32 here. + * see + * rsnd_adg_ssi_clk_try_start() + */ + ckr = 0; + adg->rate_of_441khz_div_6 = 0; + adg->rate_of_48khz_div_6 = 0; + for_each_rsnd_clk(clk, adg, i) { + rate = clk_get_rate(clk); + + if (0 == rate) /* not used */ + continue; + + /* RBGA */ + if (!adg->rate_of_441khz_div_6 && (0 == rate % 44100)) { + adg->rate_of_441khz_div_6 = rate / 6; + ckr |= brg_table[i] << 20; + } + + /* RBGB */ + if (!adg->rate_of_48khz_div_6 && (0 == rate % 48000)) { + adg->rate_of_48khz_div_6 = rate / 6; + ckr |= brg_table[i] << 16; + } + } + + rsnd_priv_bset(priv, SSICKR, 0x00FF0000, ckr); + rsnd_priv_write(priv, BRRA, 0x00000002); /* 1/6 */ + rsnd_priv_write(priv, BRRB, 0x00000002); /* 1/6 */ +} + +int rsnd_adg_probe(struct platform_device *pdev, + struct rcar_snd_info *info, + struct rsnd_priv *priv) +{ + struct rsnd_adg *adg; + struct device *dev = rsnd_priv_to_dev(priv); + struct clk *clk; + int i; + + adg = devm_kzalloc(dev, sizeof(*adg), GFP_KERNEL); + if (!adg) { + dev_err(dev, "ADG allocate failed\n"); + return -ENOMEM; + } + + adg->clk[CLKA] = clk_get(NULL, "audio_clk_a"); + adg->clk[CLKB] = clk_get(NULL, "audio_clk_b"); + adg->clk[CLKC] = clk_get(NULL, "audio_clk_c"); + adg->clk[CLKI] = clk_get(NULL, "audio_clk_internal"); + for_each_rsnd_clk(clk, adg, i) { + if (IS_ERR(clk)) { + dev_err(dev, "Audio clock failed\n"); + return -EIO; + } + } + + rsnd_adg_ssi_clk_init(priv, adg); + + priv->adg = adg; + + dev_dbg(dev, "adg probed\n"); + + return 0; +} + +void rsnd_adg_remove(struct platform_device *pdev, + struct rsnd_priv *priv) +{ + struct rsnd_adg *adg = priv->adg; + struct clk *clk; + int i; + + for_each_rsnd_clk(clk, adg, i) + clk_put(clk); +} diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c new file mode 100644 index 000000000000..a35706028514 --- /dev/null +++ b/sound/soc/sh/rcar/core.c @@ -0,0 +1,861 @@ +/* + * Renesas R-Car SRU/SCU/SSIU/SSI support + * + * Copyright (C) 2013 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * Based on fsi.c + * Kuninori Morimoto <morimoto.kuninori@renesas.com> + * + * 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. + */ + +/* + * Renesas R-Car sound device structure + * + * Gen1 + * + * SRU : Sound Routing Unit + * - SRC : Sampling Rate Converter + * - CMD + * - CTU : Channel Count Conversion Unit + * - MIX : Mixer + * - DVC : Digital Volume and Mute Function + * - SSI : Serial Sound Interface + * + * Gen2 + * + * SCU : Sampling Rate Converter Unit + * - SRC : Sampling Rate Converter + * - CMD + * - CTU : Channel Count Conversion Unit + * - MIX : Mixer + * - DVC : Digital Volume and Mute Function + * SSIU : Serial Sound Interface Unit + * - SSI : Serial Sound Interface + */ + +/* + * driver data Image + * + * rsnd_priv + * | + * | ** this depends on Gen1/Gen2 + * | + * +- gen + * | + * | ** these depend on data path + * | ** gen and platform data control it + * | + * +- rdai[0] + * | | sru ssiu ssi + * | +- playback -> [mod] -> [mod] -> [mod] -> ... + * | | + * | | sru ssiu ssi + * | +- capture -> [mod] -> [mod] -> [mod] -> ... + * | + * +- rdai[1] + * | | sru ssiu ssi + * | +- playback -> [mod] -> [mod] -> [mod] -> ... + * | | + * | | sru ssiu ssi + * | +- capture -> [mod] -> [mod] -> [mod] -> ... + * ... + * | + * | ** these control ssi + * | + * +- ssi + * | | + * | +- ssi[0] + * | +- ssi[1] + * | +- ssi[2] + * | ... + * | + * | ** these control scu + * | + * +- scu + * | + * +- scu[0] + * +- scu[1] + * +- scu[2] + * ... + * + * + * for_each_rsnd_dai(xx, priv, xx) + * rdai[0] => rdai[1] => rdai[2] => ... + * + * for_each_rsnd_mod(xx, rdai, xx) + * [mod] => [mod] => [mod] => ... + * + * rsnd_dai_call(xxx, fn ) + * [mod]->fn() -> [mod]->fn() -> [mod]->fn()... + * + */ +#include <linux/pm_runtime.h> +#include "rsnd.h" + +#define RSND_RATES SNDRV_PCM_RATE_8000_96000 +#define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE) + +/* + * rsnd_platform functions + */ +#define rsnd_platform_call(priv, dai, func, param...) \ + (!(priv->info->func) ? -ENODEV : \ + priv->info->func(param)) + + +/* + * basic function + */ +u32 rsnd_read(struct rsnd_priv *priv, + struct rsnd_mod *mod, enum rsnd_reg reg) +{ + void __iomem *base = rsnd_gen_reg_get(priv, mod, reg); + + BUG_ON(!base); + + return ioread32(base); +} + +void rsnd_write(struct rsnd_priv *priv, + struct rsnd_mod *mod, + enum rsnd_reg reg, u32 data) +{ + void __iomem *base = rsnd_gen_reg_get(priv, mod, reg); + struct device *dev = rsnd_priv_to_dev(priv); + + BUG_ON(!base); + + dev_dbg(dev, "w %p : %08x\n", base, data); + + iowrite32(data, base); +} + +void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, + enum rsnd_reg reg, u32 mask, u32 data) +{ + void __iomem *base = rsnd_gen_reg_get(priv, mod, reg); + struct device *dev = rsnd_priv_to_dev(priv); + u32 val; + + BUG_ON(!base); + + val = ioread32(base); + val &= ~mask; + val |= data & mask; + iowrite32(val, base); + + dev_dbg(dev, "s %p : %08x\n", base, val); +} + +/* + * rsnd_mod functions + */ +char *rsnd_mod_name(struct rsnd_mod *mod) +{ + if (!mod || !mod->ops) + return "unknown"; + + return mod->ops->name; +} + +void rsnd_mod_init(struct rsnd_priv *priv, + struct rsnd_mod *mod, + struct rsnd_mod_ops *ops, + int id) +{ + mod->priv = priv; + mod->id = id; + mod->ops = ops; + INIT_LIST_HEAD(&mod->list); +} + +/* + * rsnd_dma functions + */ +static void rsnd_dma_continue(struct rsnd_dma *dma) +{ + /* push next A or B plane */ + dma->submit_loop = 1; + schedule_work(&dma->work); +} + +void rsnd_dma_start(struct rsnd_dma *dma) +{ + /* push both A and B plane*/ + dma->submit_loop = 2; + schedule_work(&dma->work); +} + +void rsnd_dma_stop(struct rsnd_dma *dma) +{ + dma->submit_loop = 0; + cancel_work_sync(&dma->work); + dmaengine_terminate_all(dma->chan); +} + +static void rsnd_dma_complete(void *data) +{ + struct rsnd_dma *dma = (struct rsnd_dma *)data; + struct rsnd_priv *priv = dma->priv; + unsigned long flags; + + rsnd_lock(priv, flags); + + dma->complete(dma); + + if (dma->submit_loop) + rsnd_dma_continue(dma); + + rsnd_unlock(priv, flags); +} + +static void rsnd_dma_do_work(struct work_struct *work) +{ + struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work); + struct rsnd_priv *priv = dma->priv; + struct device *dev = rsnd_priv_to_dev(priv); + struct dma_async_tx_descriptor *desc; + dma_addr_t buf; + size_t len; + int i; + + for (i = 0; i < dma->submit_loop; i++) { + + if (dma->inquiry(dma, &buf, &len) < 0) + return; + + desc = dmaengine_prep_slave_single( + dma->chan, buf, len, dma->dir, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!desc) { + dev_err(dev, "dmaengine_prep_slave_sg() fail\n"); + return; + } + + desc->callback = rsnd_dma_complete; + desc->callback_param = dma; + + if (dmaengine_submit(desc) < 0) { + dev_err(dev, "dmaengine_submit() fail\n"); + return; + } + + } + + dma_async_issue_pending(dma->chan); +} + +int rsnd_dma_available(struct rsnd_dma *dma) +{ + return !!dma->chan; +} + +static bool rsnd_dma_filter(struct dma_chan *chan, void *param) +{ + chan->private = param; + + return true; +} + +int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, + int is_play, int id, + int (*inquiry)(struct rsnd_dma *dma, + dma_addr_t *buf, int *len), + int (*complete)(struct rsnd_dma *dma)) +{ + struct device *dev = rsnd_priv_to_dev(priv); + dma_cap_mask_t mask; + + if (dma->chan) { + dev_err(dev, "it already has dma channel\n"); + return -EIO; + } + + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + + dma->slave.shdma_slave.slave_id = id; + + dma->chan = dma_request_channel(mask, rsnd_dma_filter, + &dma->slave.shdma_slave); + if (!dma->chan) { + dev_err(dev, "can't get dma channel\n"); + return -EIO; + } + + dma->dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE; + dma->priv = priv; + dma->inquiry = inquiry; + dma->complete = complete; + INIT_WORK(&dma->work, rsnd_dma_do_work); + + return 0; +} + +void rsnd_dma_quit(struct rsnd_priv *priv, + struct rsnd_dma *dma) +{ + if (dma->chan) + dma_release_channel(dma->chan); + + dma->chan = NULL; +} + +/* + * rsnd_dai functions + */ +#define rsnd_dai_call(rdai, io, fn) \ +({ \ + struct rsnd_mod *mod, *n; \ + int ret = 0; \ + for_each_rsnd_mod(mod, n, io) { \ + ret = rsnd_mod_call(mod, fn, rdai, io); \ + if (ret < 0) \ + break; \ + } \ + ret; \ +}) + +int rsnd_dai_connect(struct rsnd_dai *rdai, + struct rsnd_mod *mod, + struct rsnd_dai_stream *io) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + + if (!mod) { + dev_err(dev, "NULL mod\n"); + return -EIO; + } + + if (!list_empty(&mod->list)) { + dev_err(dev, "%s%d is not empty\n", + rsnd_mod_name(mod), + rsnd_mod_id(mod)); + return -EIO; + } + + list_add_tail(&mod->list, &io->head); + + return 0; +} + +int rsnd_dai_disconnect(struct rsnd_mod *mod) +{ + list_del_init(&mod->list); + + return 0; +} + +int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai) +{ + int id = rdai - priv->rdai; + + if ((id < 0) || (id >= rsnd_dai_nr(priv))) + return -EINVAL; + + return id; +} + +struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id) +{ + return priv->rdai + id; +} + +static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) +{ + struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai); + + return rsnd_dai_get(priv, dai->id); +} + +int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io) +{ + return &rdai->playback == io; +} + +/* + * rsnd_soc_dai functions + */ +int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) +{ + struct snd_pcm_substream *substream = io->substream; + struct snd_pcm_runtime *runtime = substream->runtime; + int pos = io->byte_pos + additional; + + pos %= (runtime->periods * io->byte_per_period); + + return pos; +} + +void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) +{ + io->byte_pos += byte; + + if (io->byte_pos >= io->next_period_byte) { + struct snd_pcm_substream *substream = io->substream; + struct snd_pcm_runtime *runtime = substream->runtime; + + io->period_pos++; + io->next_period_byte += io->byte_per_period; + + if (io->period_pos >= runtime->periods) { + io->byte_pos = 0; + io->period_pos = 0; + io->next_period_byte = io->byte_per_period; + } + + snd_pcm_period_elapsed(substream); + } +} + +static int rsnd_dai_stream_init(struct rsnd_dai_stream *io, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + if (!list_empty(&io->head)) + return -EIO; + + INIT_LIST_HEAD(&io->head); + io->substream = substream; + io->byte_pos = 0; + io->period_pos = 0; + io->byte_per_period = runtime->period_size * + runtime->channels * + samples_to_bytes(runtime, 1); + io->next_period_byte = io->byte_per_period; + + return 0; +} + +static +struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + + return rtd->cpu_dai; +} + +static +struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, + struct snd_pcm_substream *substream) +{ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + return &rdai->playback; + else + return &rdai->capture; +} + +static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai); + struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); + struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); + struct rsnd_mod *mod = rsnd_ssi_mod_get_frm_dai(priv, + rsnd_dai_id(priv, rdai), + rsnd_dai_is_play(rdai, io)); + int ssi_id = rsnd_mod_id(mod); + int ret; + unsigned long flags; + + rsnd_lock(priv, flags); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + ret = rsnd_dai_stream_init(io, substream); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_platform_call(priv, dai, start, ssi_id); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_gen_path_init(priv, rdai, io); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_dai_call(rdai, io, init); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_dai_call(rdai, io, start); + if (ret < 0) + goto dai_trigger_end; + break; + case SNDRV_PCM_TRIGGER_STOP: + ret = rsnd_dai_call(rdai, io, stop); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_dai_call(rdai, io, quit); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_gen_path_exit(priv, rdai, io); + if (ret < 0) + goto dai_trigger_end; + + ret = rsnd_platform_call(priv, dai, stop, ssi_id); + if (ret < 0) + goto dai_trigger_end; + break; + default: + ret = -EINVAL; + } + +dai_trigger_end: + rsnd_unlock(priv, flags); + + return ret; +} + +static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); + + /* set master/slave audio interface */ + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + rdai->clk_master = 1; + break; + case SND_SOC_DAIFMT_CBS_CFS: + rdai->clk_master = 0; + break; + default: + return -EINVAL; + } + + /* set clock inversion */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_IF: + rdai->bit_clk_inv = 0; + rdai->frm_clk_inv = 1; + break; + case SND_SOC_DAIFMT_IB_NF: + rdai->bit_clk_inv = 1; + rdai->frm_clk_inv = 0; + break; + case SND_SOC_DAIFMT_IB_IF: + rdai->bit_clk_inv = 1; + rdai->frm_clk_inv = 1; + break; + case SND_SOC_DAIFMT_NB_NF: + default: + rdai->bit_clk_inv = 0; + rdai->frm_clk_inv = 0; + break; + } + + /* set format */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + rdai->sys_delay = 0; + rdai->data_alignment = 0; + break; + case SND_SOC_DAIFMT_LEFT_J: + rdai->sys_delay = 1; + rdai->data_alignment = 0; + break; + case SND_SOC_DAIFMT_RIGHT_J: + rdai->sys_delay = 1; + rdai->data_alignment = 1; + break; + } + + return 0; +} + +static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { + .trigger = rsnd_soc_dai_trigger, + .set_fmt = rsnd_soc_dai_set_fmt, +}; + +static int rsnd_dai_probe(struct platform_device *pdev, + struct rcar_snd_info *info, + struct rsnd_priv *priv) +{ + struct snd_soc_dai_driver *drv; + struct rsnd_dai *rdai; + struct rsnd_mod *pmod, *cmod; + struct device *dev = rsnd_priv_to_dev(priv); + int dai_nr; + int i; + + /* get max dai nr */ + for (dai_nr = 0; dai_nr < 32; dai_nr++) { + pmod = rsnd_ssi_mod_get_frm_dai(priv, dai_nr, 1); + cmod = rsnd_ssi_mod_get_frm_dai(priv, dai_nr, 0); + + if (!pmod && !cmod) + break; + } + + if (!dai_nr) { + dev_err(dev, "no dai\n"); + return -EIO; + } + + drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL); + rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL); + if (!drv || !rdai) { + dev_err(dev, "dai allocate failed\n"); + return -ENOMEM; + } + + for (i = 0; i < dai_nr; i++) { + + pmod = rsnd_ssi_mod_get_frm_dai(priv, i, 1); + cmod = rsnd_ssi_mod_get_frm_dai(priv, i, 0); + + /* + * init rsnd_dai + */ + INIT_LIST_HEAD(&rdai[i].playback.head); + INIT_LIST_HEAD(&rdai[i].capture.head); + + snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i); + + /* + * init snd_soc_dai_driver + */ + drv[i].name = rdai[i].name; + drv[i].ops = &rsnd_soc_dai_ops; + if (pmod) { + drv[i].playback.rates = RSND_RATES; + drv[i].playback.formats = RSND_FMTS; + drv[i].playback.channels_min = 2; + drv[i].playback.channels_max = 2; + } + if (cmod) { + drv[i].capture.rates = RSND_RATES; + drv[i].capture.formats = RSND_FMTS; + drv[i].capture.channels_min = 2; + drv[i].capture.channels_max = 2; + } + + dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name, + pmod ? "play" : " -- ", + cmod ? "capture" : " -- "); + } + + priv->dai_nr = dai_nr; + priv->daidrv = drv; + priv->rdai = rdai; + + return 0; +} + +static void rsnd_dai_remove(struct platform_device *pdev, + struct rsnd_priv *priv) +{ +} + +/* + * pcm ops + */ +static struct snd_pcm_hardware rsnd_pcm_hardware = { + .info = SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE, + .formats = RSND_FMTS, + .rates = RSND_RATES, + .rate_min = 8000, + .rate_max = 192000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = 64 * 1024, + .period_bytes_min = 32, + .period_bytes_max = 8192, + .periods_min = 1, + .periods_max = 32, + .fifo_size = 256, +}; + +static int rsnd_pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + int ret = 0; + + snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); + + ret = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + + return ret; +} + +static int rsnd_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + return snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); +} + +static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); + struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); + struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); + + return bytes_to_frames(runtime, io->byte_pos); +} + +static struct snd_pcm_ops rsnd_pcm_ops = { + .open = rsnd_pcm_open, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = rsnd_hw_params, + .hw_free = snd_pcm_lib_free_pages, + .pointer = rsnd_pointer, +}; + +/* + * snd_soc_platform + */ + +#define PREALLOC_BUFFER (32 * 1024) +#define PREALLOC_BUFFER_MAX (32 * 1024) + +static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) +{ + return snd_pcm_lib_preallocate_pages_for_all( + rtd->pcm, + SNDRV_DMA_TYPE_DEV, + rtd->card->snd_card->dev, + PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); +} + +static void rsnd_pcm_free(struct snd_pcm *pcm) +{ + snd_pcm_lib_preallocate_free_for_all(pcm); +} + +static struct snd_soc_platform_driver rsnd_soc_platform = { + .ops = &rsnd_pcm_ops, + .pcm_new = rsnd_pcm_new, + .pcm_free = rsnd_pcm_free, +}; + +static const struct snd_soc_component_driver rsnd_soc_component = { + .name = "rsnd", +}; + +/* + * rsnd probe + */ +static int rsnd_probe(struct platform_device *pdev) +{ + struct rcar_snd_info *info; + struct rsnd_priv *priv; + struct device *dev = &pdev->dev; + int ret; + + info = pdev->dev.platform_data; + if (!info) { + dev_err(dev, "driver needs R-Car sound information\n"); + return -ENODEV; + } + + /* + * init priv data + */ + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) { + dev_err(dev, "priv allocate failed\n"); + return -ENODEV; + } + + priv->dev = dev; + priv->info = info; + spin_lock_init(&priv->lock); + + /* + * init each module + */ + ret = rsnd_gen_probe(pdev, info, priv); + if (ret < 0) + return ret; + + ret = rsnd_scu_probe(pdev, info, priv); + if (ret < 0) + return ret; + + ret = rsnd_adg_probe(pdev, info, priv); + if (ret < 0) + return ret; + + ret = rsnd_ssi_probe(pdev, info, priv); + if (ret < 0) + return ret; + + ret = rsnd_dai_probe(pdev, info, priv); + if (ret < 0) + return ret; + + /* + * asoc register + */ + ret = snd_soc_register_platform(dev, &rsnd_soc_platform); + if (ret < 0) { + dev_err(dev, "cannot snd soc register\n"); + return ret; + } + + ret = snd_soc_register_component(dev, &rsnd_soc_component, + priv->daidrv, rsnd_dai_nr(priv)); + if (ret < 0) { + dev_err(dev, "cannot snd dai register\n"); + goto exit_snd_soc; + } + + dev_set_drvdata(dev, priv); + + pm_runtime_enable(dev); + + dev_info(dev, "probed\n"); + return ret; + +exit_snd_soc: + snd_soc_unregister_platform(dev); + + return ret; +} + +static int rsnd_remove(struct platform_device *pdev) +{ + struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); + + pm_runtime_disable(&pdev->dev); + + /* + * remove each module + */ + rsnd_ssi_remove(pdev, priv); + rsnd_adg_remove(pdev, priv); + rsnd_scu_remove(pdev, priv); + rsnd_dai_remove(pdev, priv); + rsnd_gen_remove(pdev, priv); + + return 0; +} + +static struct platform_driver rsnd_driver = { + .driver = { + .name = "rcar_sound", + }, + .probe = rsnd_probe, + .remove = rsnd_remove, +}; +module_platform_driver(rsnd_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Renesas R-Car audio driver"); +MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); +MODULE_ALIAS("platform:rcar-pcm-audio"); diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c new file mode 100644 index 000000000000..babb203b43b7 --- /dev/null +++ b/sound/soc/sh/rcar/gen.c @@ -0,0 +1,280 @@ +/* + * Renesas R-Car Gen1 SRU/SSI support + * + * Copyright (C) 2013 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * 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 "rsnd.h" + +struct rsnd_gen_ops { + int (*path_init)(struct rsnd_priv *priv, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io); + int (*path_exit)(struct rsnd_priv *priv, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io); +}; + +struct rsnd_gen_reg_map { + int index; /* -1 : not supported */ + u32 offset_id; /* offset of ssi0, ssi1, ssi2... */ + u32 offset_adr; /* offset of SSICR, SSISR, ... */ +}; + +struct rsnd_gen { + void __iomem *base[RSND_BASE_MAX]; + + struct rsnd_gen_reg_map reg_map[RSND_REG_MAX]; + struct rsnd_gen_ops *ops; +}; + +#define rsnd_priv_to_gen(p) ((struct rsnd_gen *)(p)->gen) + +/* + * Gen2 + * will be filled in the future + */ + +/* + * Gen1 + */ +static int rsnd_gen1_path_init(struct rsnd_priv *priv, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_mod *mod; + int ret; + int id; + + /* + * Gen1 is created by SRU/SSI, and this SRU is base module of + * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU) + * + * Easy image is.. + * Gen1 SRU = Gen2 SCU + SSIU + etc + * + * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is + * using fixed path. + * + * Then, SSI id = SCU id here + */ + + /* get SSI's ID */ + mod = rsnd_ssi_mod_get_frm_dai(priv, + rsnd_dai_id(priv, rdai), + rsnd_dai_is_play(rdai, io)); + id = rsnd_mod_id(mod); + + /* SSI */ + mod = rsnd_ssi_mod_get(priv, id); + ret = rsnd_dai_connect(rdai, mod, io); + if (ret < 0) + return ret; + + /* SCU */ + mod = rsnd_scu_mod_get(priv, id); + ret = rsnd_dai_connect(rdai, mod, io); + + return ret; +} + +static int rsnd_gen1_path_exit(struct rsnd_priv *priv, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_mod *mod, *n; + int ret = 0; + + /* + * remove all mod from rdai + */ + for_each_rsnd_mod(mod, n, io) + ret |= rsnd_dai_disconnect(mod); + + return ret; +} + +static struct rsnd_gen_ops rsnd_gen1_ops = { + .path_init = rsnd_gen1_path_init, + .path_exit = rsnd_gen1_path_exit, +}; + +#define RSND_GEN1_REG_MAP(g, s, i, oi, oa) \ + do { \ + (g)->reg_map[RSND_REG_##i].index = RSND_GEN1_##s; \ + (g)->reg_map[RSND_REG_##i].offset_id = oi; \ + (g)->reg_map[RSND_REG_##i].offset_adr = oa; \ + } while (0) + +static void rsnd_gen1_reg_map_init(struct rsnd_gen *gen) +{ + RSND_GEN1_REG_MAP(gen, SRU, SRC_ROUTE_SEL, 0x0, 0x00); + RSND_GEN1_REG_MAP(gen, SRU, SRC_TMG_SEL0, 0x0, 0x08); + RSND_GEN1_REG_MAP(gen, SRU, SRC_TMG_SEL1, 0x0, 0x0c); + RSND_GEN1_REG_MAP(gen, SRU, SRC_TMG_SEL2, 0x0, 0x10); + RSND_GEN1_REG_MAP(gen, SRU, SRC_CTRL, 0x0, 0xc0); + RSND_GEN1_REG_MAP(gen, SRU, SSI_MODE0, 0x0, 0xD0); + RSND_GEN1_REG_MAP(gen, SRU, SSI_MODE1, 0x0, 0xD4); + RSND_GEN1_REG_MAP(gen, SRU, BUSIF_MODE, 0x4, 0x20); + RSND_GEN1_REG_MAP(gen, SRU, BUSIF_ADINR, 0x40, 0x214); + + RSND_GEN1_REG_MAP(gen, ADG, BRRA, 0x0, 0x00); + RSND_GEN1_REG_MAP(gen, ADG, BRRB, 0x0, 0x04); + RSND_GEN1_REG_MAP(gen, ADG, SSICKR, 0x0, 0x08); + RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL0, 0x0, 0x0c); + RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL1, 0x0, 0x10); + RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL3, 0x0, 0x18); + RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL4, 0x0, 0x1c); + RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL5, 0x0, 0x20); + + RSND_GEN1_REG_MAP(gen, SSI, SSICR, 0x40, 0x00); + RSND_GEN1_REG_MAP(gen, SSI, SSISR, 0x40, 0x04); + RSND_GEN1_REG_MAP(gen, SSI, SSITDR, 0x40, 0x08); + RSND_GEN1_REG_MAP(gen, SSI, SSIRDR, 0x40, 0x0c); + RSND_GEN1_REG_MAP(gen, SSI, SSIWSR, 0x40, 0x20); +} + +static int rsnd_gen1_probe(struct platform_device *pdev, + struct rcar_snd_info *info, + struct rsnd_priv *priv) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_gen *gen = rsnd_priv_to_gen(priv); + struct resource *sru_res; + struct resource *adg_res; + struct resource *ssi_res; + + /* + * map address + */ + sru_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SRU); + adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_ADG); + ssi_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SSI); + + gen->base[RSND_GEN1_SRU] = devm_ioremap_resource(dev, sru_res); + gen->base[RSND_GEN1_ADG] = devm_ioremap_resource(dev, adg_res); + gen->base[RSND_GEN1_SSI] = devm_ioremap_resource(dev, ssi_res); + if (IS_ERR(gen->base[RSND_GEN1_SRU]) || + IS_ERR(gen->base[RSND_GEN1_ADG]) || + IS_ERR(gen->base[RSND_GEN1_SSI])) + return -ENODEV; + + gen->ops = &rsnd_gen1_ops; + rsnd_gen1_reg_map_init(gen); + + dev_dbg(dev, "Gen1 device probed\n"); + dev_dbg(dev, "SRU : %08x => %p\n", sru_res->start, + gen->base[RSND_GEN1_SRU]); + dev_dbg(dev, "ADG : %08x => %p\n", adg_res->start, + gen->base[RSND_GEN1_ADG]); + dev_dbg(dev, "SSI : %08x => %p\n", ssi_res->start, + gen->base[RSND_GEN1_SSI]); + + return 0; + +} + +static void rsnd_gen1_remove(struct platform_device *pdev, + struct rsnd_priv *priv) +{ +} + +/* + * Gen + */ +int rsnd_gen_path_init(struct rsnd_priv *priv, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_gen *gen = rsnd_priv_to_gen(priv); + + return gen->ops->path_init(priv, rdai, io); +} + +int rsnd_gen_path_exit(struct rsnd_priv *priv, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_gen *gen = rsnd_priv_to_gen(priv); + + return gen->ops->path_exit(priv, rdai, io); +} + +void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv, + struct rsnd_mod *mod, + enum rsnd_reg reg) +{ + struct rsnd_gen *gen = rsnd_priv_to_gen(priv); + struct device *dev = rsnd_priv_to_dev(priv); + int index; + u32 offset_id, offset_adr; + + if (reg >= RSND_REG_MAX) { + dev_err(dev, "rsnd_reg reg error\n"); + return NULL; + } + + index = gen->reg_map[reg].index; + offset_id = gen->reg_map[reg].offset_id; + offset_adr = gen->reg_map[reg].offset_adr; + + if (index < 0) { + dev_err(dev, "unsupported reg access %d\n", reg); + return NULL; + } + + if (offset_id && mod) + offset_id *= rsnd_mod_id(mod); + + /* + * index/offset were set on gen1/gen2 + */ + + return gen->base[index] + offset_id + offset_adr; +} + +int rsnd_gen_probe(struct platform_device *pdev, + struct rcar_snd_info *info, + struct rsnd_priv *priv) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_gen *gen; + int i; + + gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL); + if (!gen) { + dev_err(dev, "GEN allocate failed\n"); + return -ENOMEM; + } + + priv->gen = gen; + + /* + * see + * rsnd_reg_get() + * rsnd_gen_probe() + */ + for (i = 0; i < RSND_REG_MAX; i++) + gen->reg_map[i].index = -1; + + /* + * init each module + */ + if (rsnd_is_gen1(priv)) + return rsnd_gen1_probe(pdev, info, priv); + + dev_err(dev, "unknown generation R-Car sound device\n"); + + return -ENODEV; +} + +void rsnd_gen_remove(struct platform_device *pdev, + struct rsnd_priv *priv) +{ + if (rsnd_is_gen1(priv)) + rsnd_gen1_remove(pdev, priv); +} diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h new file mode 100644 index 000000000000..9cc6986a8cfb --- /dev/null +++ b/sound/soc/sh/rcar/rsnd.h @@ -0,0 +1,302 @@ +/* + * Renesas R-Car + * + * Copyright (C) 2013 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * 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. + */ +#ifndef RSND_H +#define RSND_H + +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/io.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/sh_dma.h> +#include <linux/workqueue.h> +#include <sound/rcar_snd.h> +#include <sound/soc.h> +#include <sound/pcm_params.h> + +/* + * pseudo register + * + * The register address offsets SRU/SCU/SSIU on Gen1/Gen2 are very different. + * This driver uses pseudo register in order to hide it. + * see gen1/gen2 for detail + */ +enum rsnd_reg { + /* SRU/SCU */ + RSND_REG_SRC_ROUTE_SEL, + RSND_REG_SRC_TMG_SEL0, + RSND_REG_SRC_TMG_SEL1, + RSND_REG_SRC_TMG_SEL2, + RSND_REG_SRC_CTRL, + RSND_REG_SSI_MODE0, + RSND_REG_SSI_MODE1, + RSND_REG_BUSIF_MODE, + RSND_REG_BUSIF_ADINR, + + /* ADG */ + RSND_REG_BRRA, + RSND_REG_BRRB, + RSND_REG_SSICKR, + RSND_REG_AUDIO_CLK_SEL0, + RSND_REG_AUDIO_CLK_SEL1, + RSND_REG_AUDIO_CLK_SEL2, + RSND_REG_AUDIO_CLK_SEL3, + RSND_REG_AUDIO_CLK_SEL4, + RSND_REG_AUDIO_CLK_SEL5, + + /* SSI */ + RSND_REG_SSICR, + RSND_REG_SSISR, + RSND_REG_SSITDR, + RSND_REG_SSIRDR, + RSND_REG_SSIWSR, + + RSND_REG_MAX, +}; + +struct rsnd_priv; +struct rsnd_mod; +struct rsnd_dai; +struct rsnd_dai_stream; + +/* + * R-Car basic functions + */ +#define rsnd_mod_read(m, r) \ + rsnd_read(rsnd_mod_to_priv(m), m, RSND_REG_##r) +#define rsnd_mod_write(m, r, d) \ + rsnd_write(rsnd_mod_to_priv(m), m, RSND_REG_##r, d) +#define rsnd_mod_bset(m, r, s, d) \ + rsnd_bset(rsnd_mod_to_priv(m), m, RSND_REG_##r, s, d) + +#define rsnd_priv_read(p, r) rsnd_read(p, NULL, RSND_REG_##r) +#define rsnd_priv_write(p, r, d) rsnd_write(p, NULL, RSND_REG_##r, d) +#define rsnd_priv_bset(p, r, s, d) rsnd_bset(p, NULL, RSND_REG_##r, s, d) + +u32 rsnd_read(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg); +void rsnd_write(struct rsnd_priv *priv, struct rsnd_mod *mod, + enum rsnd_reg reg, u32 data); +void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg, + u32 mask, u32 data); + +/* + * R-Car DMA + */ +struct rsnd_dma { + struct rsnd_priv *priv; + struct sh_dmae_slave slave; + struct work_struct work; + struct dma_chan *chan; + enum dma_data_direction dir; + int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len); + int (*complete)(struct rsnd_dma *dma); + + int submit_loop; +}; + +void rsnd_dma_start(struct rsnd_dma *dma); +void rsnd_dma_stop(struct rsnd_dma *dma); +int rsnd_dma_available(struct rsnd_dma *dma); +int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, + int is_play, int id, + int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len), + int (*complete)(struct rsnd_dma *dma)); +void rsnd_dma_quit(struct rsnd_priv *priv, + struct rsnd_dma *dma); + + +/* + * R-Car sound mod + */ + +struct rsnd_mod_ops { + char *name; + int (*init)(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io); + int (*quit)(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io); + int (*start)(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io); + int (*stop)(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io); +}; + +struct rsnd_mod { + int id; + struct rsnd_priv *priv; + struct rsnd_mod_ops *ops; + struct list_head list; /* connect to rsnd_dai playback/capture */ + struct rsnd_dma dma; +}; + +#define rsnd_mod_to_priv(mod) ((mod)->priv) +#define rsnd_mod_to_dma(mod) (&(mod)->dma) +#define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma) +#define rsnd_mod_id(mod) ((mod)->id) +#define for_each_rsnd_mod(pos, n, io) \ + list_for_each_entry_safe(pos, n, &(io)->head, list) +#define rsnd_mod_call(mod, func, rdai, io) \ + (!(mod) ? -ENODEV : \ + !((mod)->ops->func) ? 0 : \ + (mod)->ops->func(mod, rdai, io)) + +void rsnd_mod_init(struct rsnd_priv *priv, + struct rsnd_mod *mod, + struct rsnd_mod_ops *ops, + int id); +char *rsnd_mod_name(struct rsnd_mod *mod); + +/* + * R-Car sound DAI + */ +#define RSND_DAI_NAME_SIZE 16 +struct rsnd_dai_stream { + struct list_head head; /* head of rsnd_mod list */ + struct snd_pcm_substream *substream; + int byte_pos; + int period_pos; + int byte_per_period; + int next_period_byte; +}; + +struct rsnd_dai { + char name[RSND_DAI_NAME_SIZE]; + struct rsnd_dai_platform_info *info; /* rcar_snd.h */ + struct rsnd_dai_stream playback; + struct rsnd_dai_stream capture; + + int clk_master:1; + int bit_clk_inv:1; + int frm_clk_inv:1; + int sys_delay:1; + int data_alignment:1; +}; + +#define rsnd_dai_nr(priv) ((priv)->dai_nr) +#define for_each_rsnd_dai(rdai, priv, i) \ + for (i = 0, (rdai) = rsnd_dai_get(priv, i); \ + i < rsnd_dai_nr(priv); \ + i++, (rdai) = rsnd_dai_get(priv, i)) + +struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id); +int rsnd_dai_disconnect(struct rsnd_mod *mod); +int rsnd_dai_connect(struct rsnd_dai *rdai, struct rsnd_mod *mod, + struct rsnd_dai_stream *io); +int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io); +int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai); +#define rsnd_dai_get_platform_info(rdai) ((rdai)->info) +#define rsnd_io_to_runtime(io) ((io)->substream->runtime) + +void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int cnt); +int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional); + +/* + * R-Car Gen1/Gen2 + */ +int rsnd_gen_probe(struct platform_device *pdev, + struct rcar_snd_info *info, + struct rsnd_priv *priv); +void rsnd_gen_remove(struct platform_device *pdev, + struct rsnd_priv *priv); +int rsnd_gen_path_init(struct rsnd_priv *priv, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io); +int rsnd_gen_path_exit(struct rsnd_priv *priv, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io); +void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv, + struct rsnd_mod *mod, + enum rsnd_reg reg); +#define rsnd_is_gen1(s) ((s)->info->flags & RSND_GEN1) +#define rsnd_is_gen2(s) ((s)->info->flags & RSND_GEN2) + +/* + * R-Car ADG + */ +int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod); +int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate); +int rsnd_adg_probe(struct platform_device *pdev, + struct rcar_snd_info *info, + struct rsnd_priv *priv); +void rsnd_adg_remove(struct platform_device *pdev, + struct rsnd_priv *priv); + +/* + * R-Car sound priv + */ +struct rsnd_priv { + + struct device *dev; + struct rcar_snd_info *info; + spinlock_t lock; + + /* + * below value will be filled on rsnd_gen_probe() + */ + void *gen; + + /* + * below value will be filled on rsnd_scu_probe() + */ + void *scu; + int scu_nr; + + /* + * below value will be filled on rsnd_adg_probe() + */ + void *adg; + + /* + * below value will be filled on rsnd_ssi_probe() + */ + void *ssiu; + + /* + * below value will be filled on rsnd_dai_probe() + */ + struct snd_soc_dai_driver *daidrv; + struct rsnd_dai *rdai; + int dai_nr; +}; + +#define rsnd_priv_to_dev(priv) ((priv)->dev) +#define rsnd_lock(priv, flags) spin_lock_irqsave(&priv->lock, flags) +#define rsnd_unlock(priv, flags) spin_unlock_irqrestore(&priv->lock, flags) + +/* + * R-Car SCU + */ +int rsnd_scu_probe(struct platform_device *pdev, + struct rcar_snd_info *info, + struct rsnd_priv *priv); +void rsnd_scu_remove(struct platform_device *pdev, + struct rsnd_priv *priv); +struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id); +#define rsnd_scu_nr(priv) ((priv)->scu_nr) + +/* + * R-Car SSI + */ +int rsnd_ssi_probe(struct platform_device *pdev, + struct rcar_snd_info *info, + struct rsnd_priv *priv); +void rsnd_ssi_remove(struct platform_device *pdev, + struct rsnd_priv *priv); +struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id); +struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv, + int dai_id, int is_play); + +#endif diff --git a/sound/soc/sh/rcar/scu.c b/sound/soc/sh/rcar/scu.c new file mode 100644 index 000000000000..184d9008cecd --- /dev/null +++ b/sound/soc/sh/rcar/scu.c @@ -0,0 +1,236 @@ +/* + * Renesas R-Car SCU support + * + * Copyright (C) 2013 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * 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 "rsnd.h" + +struct rsnd_scu { + struct rsnd_scu_platform_info *info; /* rcar_snd.h */ + struct rsnd_mod mod; +}; + +#define rsnd_scu_mode_flags(p) ((p)->info->flags) + +/* + * ADINR + */ +#define OTBL_24 (0 << 16) +#define OTBL_22 (2 << 16) +#define OTBL_20 (4 << 16) +#define OTBL_18 (6 << 16) +#define OTBL_16 (8 << 16) + + +#define rsnd_mod_to_scu(_mod) \ + container_of((_mod), struct rsnd_scu, mod) + +#define for_each_rsnd_scu(pos, priv, i) \ + for ((i) = 0; \ + ((i) < rsnd_scu_nr(priv)) && \ + ((pos) = (struct rsnd_scu *)(priv)->scu + i); \ + i++) + +static int rsnd_scu_set_route(struct rsnd_priv *priv, + struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct scu_route_config { + u32 mask; + int shift; + } routes[] = { + { 0xF, 0, }, /* 0 */ + { 0xF, 4, }, /* 1 */ + { 0xF, 8, }, /* 2 */ + { 0x7, 12, }, /* 3 */ + { 0x7, 16, }, /* 4 */ + { 0x7, 20, }, /* 5 */ + { 0x7, 24, }, /* 6 */ + { 0x3, 28, }, /* 7 */ + { 0x3, 30, }, /* 8 */ + }; + + u32 mask; + u32 val; + int shift; + int id; + + /* + * Gen1 only + */ + if (!rsnd_is_gen1(priv)) + return 0; + + id = rsnd_mod_id(mod); + if (id < 0 || id > ARRAY_SIZE(routes)) + return -EIO; + + /* + * SRC_ROUTE_SELECT + */ + val = rsnd_dai_is_play(rdai, io) ? 0x1 : 0x2; + val = val << routes[id].shift; + mask = routes[id].mask << routes[id].shift; + + rsnd_mod_bset(mod, SRC_ROUTE_SEL, mask, val); + + /* + * SRC_TIMING_SELECT + */ + shift = (id % 4) * 8; + mask = 0x1F << shift; + if (8 == id) /* SRU8 is very special */ + val = id << shift; + else + val = (id + 1) << shift; + + switch (id / 4) { + case 0: + rsnd_mod_bset(mod, SRC_TMG_SEL0, mask, val); + break; + case 1: + rsnd_mod_bset(mod, SRC_TMG_SEL1, mask, val); + break; + case 2: + rsnd_mod_bset(mod, SRC_TMG_SEL2, mask, val); + break; + } + + return 0; +} + +static int rsnd_scu_set_mode(struct rsnd_priv *priv, + struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + int id = rsnd_mod_id(mod); + u32 val; + + if (rsnd_is_gen1(priv)) { + val = (1 << id); + rsnd_mod_bset(mod, SRC_CTRL, val, val); + } + + return 0; +} + +static int rsnd_scu_set_hpbif(struct rsnd_priv *priv, + struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + u32 adinr = runtime->channels; + + switch (runtime->sample_bits) { + case 16: + adinr |= OTBL_16; + break; + case 32: + adinr |= OTBL_24; + break; + default: + return -EIO; + } + + rsnd_mod_write(mod, BUSIF_MODE, 1); + rsnd_mod_write(mod, BUSIF_ADINR, adinr); + + return 0; +} + +static int rsnd_scu_start(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct rsnd_scu *scu = rsnd_mod_to_scu(mod); + struct device *dev = rsnd_priv_to_dev(priv); + u32 flags = rsnd_scu_mode_flags(scu); + int ret; + + /* + * SCU will be used if it has RSND_SCU_USB_HPBIF flags + */ + if (!(flags & RSND_SCU_USB_HPBIF)) { + /* it use PIO transter */ + dev_dbg(dev, "%s%d is not used\n", + rsnd_mod_name(mod), rsnd_mod_id(mod)); + + return 0; + } + + /* it use DMA transter */ + ret = rsnd_scu_set_route(priv, mod, rdai, io); + if (ret < 0) + return ret; + + ret = rsnd_scu_set_mode(priv, mod, rdai, io); + if (ret < 0) + return ret; + + ret = rsnd_scu_set_hpbif(priv, mod, rdai, io); + if (ret < 0) + return ret; + + dev_dbg(dev, "%s%d start\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); + + return 0; +} + +static struct rsnd_mod_ops rsnd_scu_ops = { + .name = "scu", + .start = rsnd_scu_start, +}; + +struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id) +{ + BUG_ON(id < 0 || id >= rsnd_scu_nr(priv)); + + return &((struct rsnd_scu *)(priv->scu) + id)->mod; +} + +int rsnd_scu_probe(struct platform_device *pdev, + struct rcar_snd_info *info, + struct rsnd_priv *priv) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_scu *scu; + int i, nr; + + /* + * init SCU + */ + nr = info->scu_info_nr; + scu = devm_kzalloc(dev, sizeof(*scu) * nr, GFP_KERNEL); + if (!scu) { + dev_err(dev, "SCU allocate failed\n"); + return -ENOMEM; + } + + priv->scu_nr = nr; + priv->scu = scu; + + for_each_rsnd_scu(scu, priv, i) { + rsnd_mod_init(priv, &scu->mod, + &rsnd_scu_ops, i); + scu->info = &info->scu_info[i]; + + dev_dbg(dev, "SCU%d probed\n", i); + } + dev_dbg(dev, "scu probed\n"); + + return 0; +} + +void rsnd_scu_remove(struct platform_device *pdev, + struct rsnd_priv *priv) +{ +} diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c new file mode 100644 index 000000000000..fae26d3f79d2 --- /dev/null +++ b/sound/soc/sh/rcar/ssi.c @@ -0,0 +1,728 @@ +/* + * Renesas R-Car SSIU/SSI support + * + * Copyright (C) 2013 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * Based on fsi.c + * Kuninori Morimoto <morimoto.kuninori@renesas.com> + * + * 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/delay.h> +#include "rsnd.h" +#define RSND_SSI_NAME_SIZE 16 + +/* + * SSICR + */ +#define FORCE (1 << 31) /* Fixed */ +#define DMEN (1 << 28) /* DMA Enable */ +#define UIEN (1 << 27) /* Underflow Interrupt Enable */ +#define OIEN (1 << 26) /* Overflow Interrupt Enable */ +#define IIEN (1 << 25) /* Idle Mode Interrupt Enable */ +#define DIEN (1 << 24) /* Data Interrupt Enable */ + +#define DWL_8 (0 << 19) /* Data Word Length */ +#define DWL_16 (1 << 19) /* Data Word Length */ +#define DWL_18 (2 << 19) /* Data Word Length */ +#define DWL_20 (3 << 19) /* Data Word Length */ +#define DWL_22 (4 << 19) /* Data Word Length */ +#define DWL_24 (5 << 19) /* Data Word Length */ +#define DWL_32 (6 << 19) /* Data Word Length */ + +#define SWL_32 (3 << 16) /* R/W System Word Length */ +#define SCKD (1 << 15) /* Serial Bit Clock Direction */ +#define SWSD (1 << 14) /* Serial WS Direction */ +#define SCKP (1 << 13) /* Serial Bit Clock Polarity */ +#define SWSP (1 << 12) /* Serial WS Polarity */ +#define SDTA (1 << 10) /* Serial Data Alignment */ +#define DEL (1 << 8) /* Serial Data Delay */ +#define CKDV(v) (v << 4) /* Serial Clock Division Ratio */ +#define TRMD (1 << 1) /* Transmit/Receive Mode Select */ +#define EN (1 << 0) /* SSI Module Enable */ + +/* + * SSISR + */ +#define UIRQ (1 << 27) /* Underflow Error Interrupt Status */ +#define OIRQ (1 << 26) /* Overflow Error Interrupt Status */ +#define IIRQ (1 << 25) /* Idle Mode Interrupt Status */ +#define DIRQ (1 << 24) /* Data Interrupt Status Flag */ + +/* + * SSIWSR + */ +#define CONT (1 << 8) /* WS Continue Function */ + +struct rsnd_ssi { + struct clk *clk; + struct rsnd_ssi_platform_info *info; /* rcar_snd.h */ + struct rsnd_ssi *parent; + struct rsnd_mod mod; + + struct rsnd_dai *rdai; + struct rsnd_dai_stream *io; + u32 cr_own; + u32 cr_clk; + u32 cr_etc; + int err; + int dma_offset; + unsigned int usrcnt; + unsigned int rate; +}; + +struct rsnd_ssiu { + u32 ssi_mode0; + u32 ssi_mode1; + + int ssi_nr; + struct rsnd_ssi *ssi; +}; + +#define for_each_rsnd_ssi(pos, priv, i) \ + for (i = 0; \ + (i < rsnd_ssi_nr(priv)) && \ + ((pos) = ((struct rsnd_ssiu *)((priv)->ssiu))->ssi + i); \ + i++) + +#define rsnd_ssi_nr(priv) (((struct rsnd_ssiu *)((priv)->ssiu))->ssi_nr) +#define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod) +#define rsnd_dma_to_ssi(dma) rsnd_mod_to_ssi(rsnd_dma_to_mod(dma)) +#define rsnd_ssi_pio_available(ssi) ((ssi)->info->pio_irq > 0) +#define rsnd_ssi_dma_available(ssi) \ + rsnd_dma_available(rsnd_mod_to_dma(&(ssi)->mod)) +#define rsnd_ssi_clk_from_parent(ssi) ((ssi)->parent) +#define rsnd_rdai_is_clk_master(rdai) ((rdai)->clk_master) +#define rsnd_ssi_mode_flags(p) ((p)->info->flags) +#define rsnd_ssi_dai_id(ssi) ((ssi)->info->dai_id) +#define rsnd_ssi_to_ssiu(ssi)\ + (((struct rsnd_ssiu *)((ssi) - rsnd_mod_id(&(ssi)->mod))) - 1) + +static void rsnd_ssi_mode_init(struct rsnd_priv *priv, + struct rsnd_ssiu *ssiu) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_ssi *ssi; + u32 flags; + u32 val; + int i; + + /* + * SSI_MODE0 + */ + ssiu->ssi_mode0 = 0; + for_each_rsnd_ssi(ssi, priv, i) { + flags = rsnd_ssi_mode_flags(ssi); + + /* see also BUSIF_MODE */ + if (!(flags & RSND_SSI_DEPENDENT)) { + ssiu->ssi_mode0 |= (1 << i); + dev_dbg(dev, "SSI%d uses INDEPENDENT mode\n", i); + } else { + dev_dbg(dev, "SSI%d uses DEPENDENT mode\n", i); + } + } + + /* + * SSI_MODE1 + */ +#define ssi_parent_set(p, sync, adg, ext) \ + do { \ + ssi->parent = ssiu->ssi + p; \ + if (flags & RSND_SSI_CLK_FROM_ADG) \ + val = adg; \ + else \ + val = ext; \ + if (flags & RSND_SSI_SYNC) \ + val |= sync; \ + } while (0) + + ssiu->ssi_mode1 = 0; + for_each_rsnd_ssi(ssi, priv, i) { + flags = rsnd_ssi_mode_flags(ssi); + + if (!(flags & RSND_SSI_CLK_PIN_SHARE)) + continue; + + val = 0; + switch (i) { + case 1: + ssi_parent_set(0, (1 << 4), (0x2 << 0), (0x1 << 0)); + break; + case 2: + ssi_parent_set(0, (1 << 4), (0x2 << 2), (0x1 << 2)); + break; + case 4: + ssi_parent_set(3, (1 << 20), (0x2 << 16), (0x1 << 16)); + break; + case 8: + ssi_parent_set(7, 0, 0, 0); + break; + } + + ssiu->ssi_mode1 |= val; + } +} + +static void rsnd_ssi_mode_set(struct rsnd_ssi *ssi) +{ + struct rsnd_ssiu *ssiu = rsnd_ssi_to_ssiu(ssi); + + rsnd_mod_write(&ssi->mod, SSI_MODE0, ssiu->ssi_mode0); + rsnd_mod_write(&ssi->mod, SSI_MODE1, ssiu->ssi_mode1); +} + +static void rsnd_ssi_status_check(struct rsnd_mod *mod, + u32 bit) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + u32 status; + int i; + + for (i = 0; i < 1024; i++) { + status = rsnd_mod_read(mod, SSISR); + if (status & bit) + return; + + udelay(50); + } + + dev_warn(dev, "status check failed\n"); +} + +static int rsnd_ssi_master_clk_start(struct rsnd_ssi *ssi, + unsigned int rate) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); + struct device *dev = rsnd_priv_to_dev(priv); + int i, j, ret; + int adg_clk_div_table[] = { + 1, 6, /* see adg.c */ + }; + int ssi_clk_mul_table[] = { + 1, 2, 4, 8, 16, 6, 12, + }; + unsigned int main_rate; + + /* + * Find best clock, and try to start ADG + */ + for (i = 0; i < ARRAY_SIZE(adg_clk_div_table); i++) { + for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) { + + /* + * this driver is assuming that + * system word is 64fs (= 2 x 32bit) + * see rsnd_ssi_start() + */ + main_rate = rate / adg_clk_div_table[i] + * 32 * 2 * ssi_clk_mul_table[j]; + + ret = rsnd_adg_ssi_clk_try_start(&ssi->mod, main_rate); + if (0 == ret) { + ssi->rate = rate; + ssi->cr_clk = FORCE | SWL_32 | + SCKD | SWSD | CKDV(j); + + dev_dbg(dev, "ssi%d outputs %u Hz\n", + rsnd_mod_id(&ssi->mod), rate); + + return 0; + } + } + } + + dev_err(dev, "unsupported clock rate\n"); + return -EIO; +} + +static void rsnd_ssi_master_clk_stop(struct rsnd_ssi *ssi) +{ + ssi->rate = 0; + ssi->cr_clk = 0; + rsnd_adg_ssi_clk_stop(&ssi->mod); +} + +static void rsnd_ssi_hw_start(struct rsnd_ssi *ssi, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); + struct device *dev = rsnd_priv_to_dev(priv); + u32 cr; + + if (0 == ssi->usrcnt) { + clk_enable(ssi->clk); + + if (rsnd_rdai_is_clk_master(rdai)) { + struct snd_pcm_runtime *runtime; + + runtime = rsnd_io_to_runtime(io); + + if (rsnd_ssi_clk_from_parent(ssi)) + rsnd_ssi_hw_start(ssi->parent, rdai, io); + else + rsnd_ssi_master_clk_start(ssi, runtime->rate); + } + } + + cr = ssi->cr_own | + ssi->cr_clk | + ssi->cr_etc | + EN; + + rsnd_mod_write(&ssi->mod, SSICR, cr); + + ssi->usrcnt++; + + dev_dbg(dev, "ssi%d hw started\n", rsnd_mod_id(&ssi->mod)); +} + +static void rsnd_ssi_hw_stop(struct rsnd_ssi *ssi, + struct rsnd_dai *rdai) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); + struct device *dev = rsnd_priv_to_dev(priv); + u32 cr; + + if (0 == ssi->usrcnt) /* stop might be called without start */ + return; + + ssi->usrcnt--; + + if (0 == ssi->usrcnt) { + /* + * disable all IRQ, + * and, wait all data was sent + */ + cr = ssi->cr_own | + ssi->cr_clk; + + rsnd_mod_write(&ssi->mod, SSICR, cr | EN); + rsnd_ssi_status_check(&ssi->mod, DIRQ); + + /* + * disable SSI, + * and, wait idle state + */ + rsnd_mod_write(&ssi->mod, SSICR, cr); /* disabled all */ + rsnd_ssi_status_check(&ssi->mod, IIRQ); + + if (rsnd_rdai_is_clk_master(rdai)) { + if (rsnd_ssi_clk_from_parent(ssi)) + rsnd_ssi_hw_stop(ssi->parent, rdai); + else + rsnd_ssi_master_clk_stop(ssi); + } + + clk_disable(ssi->clk); + } + + dev_dbg(dev, "ssi%d hw stopped\n", rsnd_mod_id(&ssi->mod)); +} + +/* + * SSI mod common functions + */ +static int rsnd_ssi_init(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + u32 cr; + + cr = FORCE; + + /* + * always use 32bit system word for easy clock calculation. + * see also rsnd_ssi_master_clk_enable() + */ + cr |= SWL_32; + + /* + * init clock settings for SSICR + */ + switch (runtime->sample_bits) { + case 16: + cr |= DWL_16; + break; + case 32: + cr |= DWL_24; + break; + default: + return -EIO; + } + + if (rdai->bit_clk_inv) + cr |= SCKP; + if (rdai->frm_clk_inv) + cr |= SWSP; + if (rdai->data_alignment) + cr |= SDTA; + if (rdai->sys_delay) + cr |= DEL; + if (rsnd_dai_is_play(rdai, io)) + cr |= TRMD; + + /* + * set ssi parameter + */ + ssi->rdai = rdai; + ssi->io = io; + ssi->cr_own = cr; + ssi->err = -1; /* ignore 1st error */ + + rsnd_ssi_mode_set(ssi); + + dev_dbg(dev, "%s.%d init\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); + + return 0; +} + +static int rsnd_ssi_quit(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + + dev_dbg(dev, "%s.%d quit\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); + + if (ssi->err > 0) + dev_warn(dev, "ssi under/over flow err = %d\n", ssi->err); + + ssi->rdai = NULL; + ssi->io = NULL; + ssi->cr_own = 0; + ssi->err = 0; + + return 0; +} + +static void rsnd_ssi_record_error(struct rsnd_ssi *ssi, u32 status) +{ + /* under/over flow error */ + if (status & (UIRQ | OIRQ)) { + ssi->err++; + + /* clear error status */ + rsnd_mod_write(&ssi->mod, SSISR, 0); + } +} + +/* + * SSI PIO + */ +static irqreturn_t rsnd_ssi_pio_interrupt(int irq, void *data) +{ + struct rsnd_ssi *ssi = data; + struct rsnd_dai_stream *io = ssi->io; + u32 status = rsnd_mod_read(&ssi->mod, SSISR); + irqreturn_t ret = IRQ_NONE; + + if (io && (status & DIRQ)) { + struct rsnd_dai *rdai = ssi->rdai; + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + u32 *buf = (u32 *)(runtime->dma_area + + rsnd_dai_pointer_offset(io, 0)); + + rsnd_ssi_record_error(ssi, status); + + /* + * 8/16/32 data can be assesse to TDR/RDR register + * directly as 32bit data + * see rsnd_ssi_init() + */ + if (rsnd_dai_is_play(rdai, io)) + rsnd_mod_write(&ssi->mod, SSITDR, *buf); + else + *buf = rsnd_mod_read(&ssi->mod, SSIRDR); + + rsnd_dai_pointer_update(io, sizeof(*buf)); + + ret = IRQ_HANDLED; + } + + return ret; +} + +static int rsnd_ssi_pio_start(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + struct device *dev = rsnd_priv_to_dev(priv); + + /* enable PIO IRQ */ + ssi->cr_etc = UIEN | OIEN | DIEN; + + rsnd_ssi_hw_start(ssi, rdai, io); + + dev_dbg(dev, "%s.%d start\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); + + return 0; +} + +static int rsnd_ssi_pio_stop(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + + dev_dbg(dev, "%s.%d stop\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); + + ssi->cr_etc = 0; + + rsnd_ssi_hw_stop(ssi, rdai); + + return 0; +} + +static struct rsnd_mod_ops rsnd_ssi_pio_ops = { + .name = "ssi (pio)", + .init = rsnd_ssi_init, + .quit = rsnd_ssi_quit, + .start = rsnd_ssi_pio_start, + .stop = rsnd_ssi_pio_stop, +}; + +static int rsnd_ssi_dma_inquiry(struct rsnd_dma *dma, dma_addr_t *buf, int *len) +{ + struct rsnd_ssi *ssi = rsnd_dma_to_ssi(dma); + struct rsnd_dai_stream *io = ssi->io; + struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + + *len = io->byte_per_period; + *buf = runtime->dma_addr + + rsnd_dai_pointer_offset(io, ssi->dma_offset + *len); + ssi->dma_offset = *len; /* it cares A/B plane */ + + return 0; +} + +static int rsnd_ssi_dma_complete(struct rsnd_dma *dma) +{ + struct rsnd_ssi *ssi = rsnd_dma_to_ssi(dma); + struct rsnd_dai_stream *io = ssi->io; + u32 status = rsnd_mod_read(&ssi->mod, SSISR); + + rsnd_ssi_record_error(ssi, status); + + rsnd_dai_pointer_update(ssi->io, io->byte_per_period); + + return 0; +} + +static int rsnd_ssi_dma_start(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + struct rsnd_dma *dma = rsnd_mod_to_dma(&ssi->mod); + + /* enable DMA transfer */ + ssi->cr_etc = DMEN; + ssi->dma_offset = 0; + + rsnd_dma_start(dma); + + rsnd_ssi_hw_start(ssi, ssi->rdai, io); + + /* enable WS continue */ + if (rsnd_rdai_is_clk_master(rdai)) + rsnd_mod_write(&ssi->mod, SSIWSR, CONT); + + return 0; +} + +static int rsnd_ssi_dma_stop(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + struct rsnd_dma *dma = rsnd_mod_to_dma(&ssi->mod); + + ssi->cr_etc = 0; + + rsnd_ssi_hw_stop(ssi, rdai); + + rsnd_dma_stop(dma); + + return 0; +} + +static struct rsnd_mod_ops rsnd_ssi_dma_ops = { + .name = "ssi (dma)", + .init = rsnd_ssi_init, + .quit = rsnd_ssi_quit, + .start = rsnd_ssi_dma_start, + .stop = rsnd_ssi_dma_stop, +}; + +/* + * Non SSI + */ +static int rsnd_ssi_non(struct rsnd_mod *mod, + struct rsnd_dai *rdai, + struct rsnd_dai_stream *io) +{ + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + + dev_dbg(dev, "%s\n", __func__); + + return 0; +} + +static struct rsnd_mod_ops rsnd_ssi_non_ops = { + .name = "ssi (non)", + .init = rsnd_ssi_non, + .quit = rsnd_ssi_non, + .start = rsnd_ssi_non, + .stop = rsnd_ssi_non, +}; + +/* + * ssi mod function + */ +struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv, + int dai_id, int is_play) +{ + struct rsnd_ssi *ssi; + int i, has_play; + + is_play = !!is_play; + + for_each_rsnd_ssi(ssi, priv, i) { + if (rsnd_ssi_dai_id(ssi) != dai_id) + continue; + + has_play = !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_PLAY); + + if (is_play == has_play) + return &ssi->mod; + } + + return NULL; +} + +struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id) +{ + BUG_ON(id < 0 || id >= rsnd_ssi_nr(priv)); + + return &(((struct rsnd_ssiu *)(priv->ssiu))->ssi + id)->mod; +} + +int rsnd_ssi_probe(struct platform_device *pdev, + struct rcar_snd_info *info, + struct rsnd_priv *priv) +{ + struct rsnd_ssi_platform_info *pinfo; + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_mod_ops *ops; + struct clk *clk; + struct rsnd_ssiu *ssiu; + struct rsnd_ssi *ssi; + char name[RSND_SSI_NAME_SIZE]; + int i, nr, ret; + + /* + * init SSI + */ + nr = info->ssi_info_nr; + ssiu = devm_kzalloc(dev, sizeof(*ssiu) + (sizeof(*ssi) * nr), + GFP_KERNEL); + if (!ssiu) { + dev_err(dev, "SSI allocate failed\n"); + return -ENOMEM; + } + + priv->ssiu = ssiu; + ssiu->ssi = (struct rsnd_ssi *)(ssiu + 1); + ssiu->ssi_nr = nr; + + for_each_rsnd_ssi(ssi, priv, i) { + pinfo = &info->ssi_info[i]; + + snprintf(name, RSND_SSI_NAME_SIZE, "ssi.%d", i); + + clk = clk_get(dev, name); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + ssi->info = pinfo; + ssi->clk = clk; + + ops = &rsnd_ssi_non_ops; + + /* + * SSI DMA case + */ + if (pinfo->dma_id > 0) { + ret = rsnd_dma_init( + priv, rsnd_mod_to_dma(&ssi->mod), + (rsnd_ssi_mode_flags(ssi) & RSND_SSI_PLAY), + pinfo->dma_id, + rsnd_ssi_dma_inquiry, + rsnd_ssi_dma_complete); + if (ret < 0) + dev_info(dev, "SSI DMA failed. try PIO transter\n"); + else + ops = &rsnd_ssi_dma_ops; + + dev_dbg(dev, "SSI%d use DMA transfer\n", i); + } + + /* + * SSI PIO case + */ + if (!rsnd_ssi_dma_available(ssi) && + rsnd_ssi_pio_available(ssi)) { + ret = devm_request_irq(dev, pinfo->pio_irq, + &rsnd_ssi_pio_interrupt, + IRQF_SHARED, + dev_name(dev), ssi); + if (ret) { + dev_err(dev, "SSI request interrupt failed\n"); + return ret; + } + + ops = &rsnd_ssi_pio_ops; + + dev_dbg(dev, "SSI%d use PIO transfer\n", i); + } + + rsnd_mod_init(priv, &ssi->mod, ops, i); + } + + rsnd_ssi_mode_init(priv, ssiu); + + dev_dbg(dev, "ssi probed\n"); + + return 0; +} + +void rsnd_ssi_remove(struct platform_device *pdev, + struct rsnd_priv *priv) +{ + struct rsnd_ssi *ssi; + int i; + + for_each_rsnd_ssi(ssi, priv, i) { + clk_put(ssi->clk); + if (rsnd_ssi_dma_available(ssi)) + rsnd_dma_quit(priv, rsnd_mod_to_dma(&ssi->mod)); + } + +} |