Commit 63bef547 authored by Mark Brown's avatar Mark Brown Committed by Russell King
Browse files

[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: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: default avatarEric Miao <eric.miao@marvell.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent e7d48fa2

arch/arm/mach-pxa/include/mach/ssp.h

+24 −0
Original line number Diff line number Diff line
@@ -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 */

CRA Git | Maintained and supported by SUSTech CRA and CCSE