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Commit 3f3f1d9d authored by wanzongshun's avatar wanzongshun Committed by Russell King
Browse files

[ARM] 5619/1: Add spi mfp api for w90p910 spi driver 



Add spi mfp api for w90p910 spi driver.

Signed-off-by: default avatarWan ZongShun <mcuos.com@gmail.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent c16d5d56

arch/arm/mach-w90x900/mfp-w90p910.c

+38 −0
Original line number Diff line number Diff line
@@ -34,6 +34,12 @@ 
#define GPSELEI0	(0x01 << 26)

#define GPSELEI1	(0x01 << 27)



#define GPIOG0TO1	(0x03 << 14)

#define GPIOG2TO3	(0x03 << 16)

#define ENSPI		(0x0a << 14)

#define ENI2C0		(0x01 << 14)

#define ENI2C1		(0x01 << 16)



static DECLARE_MUTEX(mfp_sem);



void mfp_set_groupf(struct device *dev)
@@ -118,3 +124,35 @@ void mfp_set_groupi(struct device *dev) 
}

EXPORT_SYMBOL(mfp_set_groupi);



void mfp_set_groupg(struct device *dev)

{

	unsigned long mfpen;

	const char *dev_id;



	BUG_ON(!dev);



	down(&mfp_sem);



	dev_id = dev_name(dev);



	mfpen = __raw_readl(REG_MFSEL);



	if (strcmp(dev_id, "w90p910-spi") == 0) {

		mfpen &= ~(GPIOG0TO1 | GPIOG2TO3);

		mfpen |= ENSPI;/*enable spi*/

	} else if (strcmp(dev_id, "w90p910-i2c0") == 0) {

		mfpen &= ~(GPIOG0TO1);

		mfpen |= ENI2C0;/*enable i2c0*/

	} else if (strcmp(dev_id, "w90p910-i2c1") == 0) {

		mfpen &= ~(GPIOG2TO3);

		mfpen |= ENI2C1;/*enable i2c1*/

	} else {

		mfpen &= ~(GPIOG0TO1 | GPIOG2TO3);/*GPIOG[3:0]*/

	}



	__raw_writel(mfpen, REG_MFSEL);



	up(&mfp_sem);

}

EXPORT_SYMBOL(mfp_set_groupg);