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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-16 11:25:32 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-16 11:25:32 -0700 |
commit | 8ef50901d3c619127858b7d7f614fcab45e09d6b (patch) | |
tree | e75a0d48029d4a5857033e4edf1cd572a5a3fc62 /drivers/spi/omap_uwire.c | |
parent | 435263702ef0fc9ffdc6301a71c03b1d9ac0f1e0 (diff) | |
parent | 2502991560dc8244dbe10e48473d85722c1e2ec1 (diff) |
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/omap_uwire.c')
-rw-r--r-- | drivers/spi/omap_uwire.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/spi/omap_uwire.c b/drivers/spi/omap_uwire.c index 5515eb97d7c..bab6ff061e9 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; } |