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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-16 11:25:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-16 11:25:32 -0700
commit8ef50901d3c619127858b7d7f614fcab45e09d6b (patch)
treee75a0d48029d4a5857033e4edf1cd572a5a3fc62 /drivers/spi
parent435263702ef0fc9ffdc6301a71c03b1d9ac0f1e0 (diff)
parent2502991560dc8244dbe10e48473d85722c1e2ec1 (diff)
downloadlwn-8ef50901d3c619127858b7d7f614fcab45e09d6b.tar.gz
lwn-8ef50901d3c619127858b7d7f614fcab45e09d6b.zip
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (51 commits) [ARM] 5308/1: Fix Viper ISA IRQ handling [ARM] 5307/1: pxa: fix CM-X2XX PCMCIA build error [ARM] 5306/1: pxa: fix build error on CM-X270 [ARM] 5302/1: ARM: OMAP: Revert omap3 WDT changes to avoid merge conflict [ARM] 5305/1: ARM: OMAP: Fix compile of McBSP by removing unnecessary check [ARM] 5301/1: ARM: OMAP: Add missing irq defines ARM: OMAP3: Add default kernel config for OMAP LDP ARM: OMAP3: Add basic board support for OMAP LDP ARM: OMAP3: Defconfig for the Gumstix Overo board (rev 3) ARM: OMAP3: Add support for the Gumstix Overo board (rev 3) ARM: OMAP3: Add Beagle defconfig ARM: OMAP3: Add minimal Beagle board support ARM: OMAP3: Add minimal omap3430 support ARM: OMAP2: Fix sparse, checkpatch warnings in OMAP2/3 IRQ code ARM: OMAP: Fixes to omap_mcbsp_request function ARM: OMAP: Add support for OMAP2430 in McBSP ARM: OMAP: Add support for McBSP devices 3 - 5 on 34xx ARM: OMAP: Allocate McBSP devices dynamically Fix sections for omap-mcbsp platform driver [ARM] S3C24XX: Additional include moves ...
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/omap2_mcspi.c18
-rw-r--r--drivers/spi/omap_uwire.c23
2 files changed, 35 insertions, 6 deletions
diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c
index 9d2186fd74aa..454a2712e629 100644
--- a/drivers/spi/omap2_mcspi.c
+++ b/drivers/spi/omap2_mcspi.c
@@ -119,12 +119,14 @@ struct omap2_mcspi {
struct clk *fck;
/* Virtual base address of the controller */
void __iomem *base;
+ unsigned long phys;
/* SPI1 has 4 channels, while SPI2 has 2 */
struct omap2_mcspi_dma *dma_channels;
};
struct omap2_mcspi_cs {
void __iomem *base;
+ unsigned long phys;
int word_len;
};
@@ -233,7 +235,7 @@ omap2_mcspi_txrx_dma(struct spi_device *spi, struct spi_transfer *xfer)
c = count;
word_len = cs->word_len;
- base = (unsigned long) io_v2p(cs->base);
+ base = cs->phys;
tx_reg = base + OMAP2_MCSPI_TX0;
rx_reg = base + OMAP2_MCSPI_RX0;
rx = xfer->rx_buf;
@@ -633,6 +635,7 @@ static int omap2_mcspi_setup(struct spi_device *spi)
if (!cs)
return -ENOMEM;
cs->base = mcspi->base + spi->chip_select * 0x14;
+ cs->phys = mcspi->phys + spi->chip_select * 0x14;
spi->controller_state = cs;
}
@@ -1005,7 +1008,13 @@ static int __init omap2_mcspi_probe(struct platform_device *pdev)
goto err1;
}
- mcspi->base = (void __iomem *) io_p2v(r->start);
+ mcspi->phys = r->start;
+ mcspi->base = ioremap(r->start, r->end - r->start + 1);
+ if (!mcspi->base) {
+ dev_dbg(&pdev->dev, "can't ioremap MCSPI\n");
+ status = -ENOMEM;
+ goto err1aa;
+ }
INIT_WORK(&mcspi->work, omap2_mcspi_work);
@@ -1055,6 +1064,8 @@ err3:
err2:
clk_put(mcspi->ick);
err1a:
+ iounmap(mcspi->base);
+err1aa:
release_mem_region(r->start, (r->end - r->start) + 1);
err1:
spi_master_put(master);
@@ -1067,6 +1078,7 @@ static int __exit omap2_mcspi_remove(struct platform_device *pdev)
struct omap2_mcspi *mcspi;
struct omap2_mcspi_dma *dma_channels;
struct resource *r;
+ void __iomem *base;
master = dev_get_drvdata(&pdev->dev);
mcspi = spi_master_get_devdata(master);
@@ -1078,7 +1090,9 @@ static int __exit omap2_mcspi_remove(struct platform_device *pdev)
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(r->start, (r->end - r->start) + 1);
+ base = mcspi->base;
spi_unregister_master(master);
+ iounmap(base);
kfree(dma_channels);
return 0;
diff --git a/drivers/spi/omap_uwire.c b/drivers/spi/omap_uwire.c
index 5515eb97d7c5..bab6ff061e91 100644
--- a/drivers/spi/omap_uwire.c
+++ b/drivers/spi/omap_uwire.c
@@ -59,7 +59,6 @@
* and irqs should show there too...
*/
#define UWIRE_BASE_PHYS 0xFFFB3000
-#define UWIRE_BASE ((void *__iomem)IO_ADDRESS(UWIRE_BASE_PHYS))
/* uWire Registers: */
#define UWIRE_IO_SIZE 0x20
@@ -103,16 +102,21 @@ struct uwire_state {
};
/* REVISIT compile time constant for idx_shift? */
+/*
+ * Or, put it in a structure which is used throughout the driver;
+ * that avoids having to issue two loads for each bit of static data.
+ */
static unsigned int uwire_idx_shift;
+static void __iomem *uwire_base;
static inline void uwire_write_reg(int idx, u16 val)
{
- __raw_writew(val, UWIRE_BASE + (idx << uwire_idx_shift));
+ __raw_writew(val, uwire_base + (idx << uwire_idx_shift));
}
static inline u16 uwire_read_reg(int idx)
{
- return __raw_readw(UWIRE_BASE + (idx << uwire_idx_shift));
+ return __raw_readw(uwire_base + (idx << uwire_idx_shift));
}
static inline void omap_uwire_configure_mode(u8 cs, unsigned long flags)
@@ -492,6 +496,14 @@ static int __init uwire_probe(struct platform_device *pdev)
return -ENODEV;
uwire = spi_master_get_devdata(master);
+
+ uwire_base = ioremap(UWIRE_BASE_PHYS, UWIRE_IO_SIZE);
+ if (!uwire_base) {
+ dev_dbg(&pdev->dev, "can't ioremap UWIRE\n");
+ spi_master_put(master);
+ return -ENOMEM;
+ }
+
dev_set_drvdata(&pdev->dev, uwire);
uwire->ck = clk_get(&pdev->dev, "armxor_ck");
@@ -520,8 +532,10 @@ static int __init uwire_probe(struct platform_device *pdev)
uwire->bitbang.txrx_bufs = uwire_txrx;
status = spi_bitbang_start(&uwire->bitbang);
- if (status < 0)
+ if (status < 0) {
uwire_off(uwire);
+ iounmap(uwire_base);
+ }
return status;
}
@@ -534,6 +548,7 @@ static int __exit uwire_remove(struct platform_device *pdev)
status = spi_bitbang_stop(&uwire->bitbang);
uwire_off(uwire);
+ iounmap(uwire_base);
return status;
}