diff options
| author | wanzongshun | 2009-07-23 08:52:51 +0100 |
|---|---|---|
| committer | Russell King | 2009-07-23 10:24:31 +0100 |
| commit | 3f3f1d9d8de10a5dad0d22046cdd26dfb93d05c9 (patch) | |
| tree | a783422faf5a356e0b3e047e97c825e44b88d046 | |
| parent | c16d5d5657294e782d505efd00bbf2452d6aa0ca (diff) | |
[ARM] 5619/1: Add spi mfp api for w90p910 spi driver
Add spi mfp api for w90p910 spi driver.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/mach-w90x900/mfp-w90p910.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-w90x900/mfp-w90p910.c b/arch/arm/mach-w90x900/mfp-w90p910.c index 8aec34b044ca..e11a32b6856d 100644 --- a/arch/arm/mach-w90x900/mfp-w90p910.c +++ b/arch/arm/mach-w90x900/mfp-w90p910.c @@ -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); + |