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| author | Mark Brown <broonie@sirena.org.uk> | 2008-08-26 18:40:57 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-09-09 16:32:52 +0100 |
| commit | 63bef5473892ae683a9e989975180a5754b0ae33 (patch) | |
| tree | d3362f0cdbe205fbb094f0edaed19a3c28a731fe /arch/arm/mach-pxa/include/mach/ssp.h | |
| parent | e7d48fa2b5fbc7f74bb7ef4a8d7e080b0e831ef0 (diff) | |
| download | lwn-63bef5473892ae683a9e989975180a5754b0ae33.tar.gz lwn-63bef5473892ae683a9e989975180a5754b0ae33.zip | |
[ARM] 5224/2: PXA SSP: Introduce register accessors
Introduce accessors for the SSP registers so that drivers don't need to
open code offsets from the MMIO base.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa/include/mach/ssp.h')
| -rw-r--r-- | arch/arm/mach-pxa/include/mach/ssp.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/include/mach/ssp.h b/arch/arm/mach-pxa/include/mach/ssp.h index a012882c9ee6..cb5cb766f0f1 100644 --- a/arch/arm/mach-pxa/include/mach/ssp.h +++ b/arch/arm/mach-pxa/include/mach/ssp.h @@ -20,6 +20,7 @@ #define __ASM_ARCH_SSP_H #include <linux/list.h> +#include <linux/io.h> enum pxa_ssp_type { SSP_UNDEFINED = 0, @@ -78,6 +79,29 @@ int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags); int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed); void ssp_exit(struct ssp_dev *dev); +/** + * ssp_write_reg - Write to a SSP register + * + * @dev: SSP device to access + * @reg: Register to write to + * @val: Value to be written. + */ +static inline void ssp_write_reg(struct ssp_device *dev, u32 reg, u32 val) +{ + __raw_writel(val, dev->mmio_base + reg); +} + +/** + * ssp_read_reg - Read from a SSP register + * + * @dev: SSP device to access + * @reg: Register to read from + */ +static inline u32 ssp_read_reg(struct ssp_device *dev, u32 reg) +{ + return __raw_readl(dev->mmio_base + reg); +} + struct ssp_device *ssp_request(int port, const char *label); void ssp_free(struct ssp_device *); #endif /* __ASM_ARCH_SSP_H */ |