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ARM: 7158/1: add new MFP implement for NUC900 

This patch is to add new MFP implement in mfp.c,since nuc900 mmc driver
needs this function support.

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
wanzongshun 2011-11-10 07:06:29 +01:00 committed by Russell King
parent a6dc54460e
commit 798681bf21
3 changed files with 45 additions and 8 deletions
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3
arch/arm/mach-w90x900/include/mach/mfp.h
View File

@ -19,6 +19,7 @@
extern void mfp_set_groupf(struct device *dev);
extern void mfp_set_groupc(struct device *dev);
extern void mfp_set_groupi(struct device *dev);
extern void mfp_set_groupg(struct device *dev);
extern void mfp_set_groupg(struct device *dev, const char *subname);
extern void mfp_set_groupd(struct device *dev, const char *subname);
#endif /* __ASM_ARCH_MFP_H */

2
arch/arm/mach-w90x900/include/mach/nuc900_spi.h
View File

@ -14,7 +14,7 @@
#ifndef __ASM_ARCH_SPI_H
#define __ASM_ARCH_SPI_H
extern void mfp_set_groupg(struct device *dev);
extern void mfp_set_groupg(struct device *dev, const char *subname);
struct nuc900_spi_info {
unsigned int num_cs;

48
arch/arm/mach-w90x900/mfp.c
View File

@ -26,10 +26,8 @@
#define REG_MFSEL (W90X900_VA_GCR + 0xC)
#define GPSELF (0x01 << 1)
#define GPSELC (0x03 << 2)
#define ENKPI (0x02 << 2)
#define ENNAND (0x01 << 2)
#define GPSELD (0x0f << 4)
#define GPSELEI0 (0x01 << 26)
#define GPSELEI1 (0x01 << 27)
@ -37,11 +35,16 @@
#define GPIOG0TO1 (0x03 << 14)
#define GPIOG2TO3 (0x03 << 16)
#define GPIOG22TO23 (0x03 << 22)
#define GPIOG18TO20 (0x07 << 18)
#define ENSPI (0x0a << 14)
#define ENI2C0 (0x01 << 14)
#define ENI2C1 (0x01 << 16)
#define ENAC97 (0x02 << 22)
#define ENSD1 (0x02 << 18)
#define ENSD0 (0x0a << 4)
#define ENKPI (0x02 << 2)
#define ENNAND (0x01 << 2)
static DEFINE_MUTEX(mfp_mutex);
@ -127,16 +130,19 @@ void mfp_set_groupi(struct device *dev)
}
EXPORT_SYMBOL(mfp_set_groupi);
void mfp_set_groupg(struct device *dev)
void mfp_set_groupg(struct device *dev, const char *subname)
{
unsigned long mfpen;
const char *dev_id;
BUG_ON(!dev);
BUG_ON((!dev) && (!subname));
mutex_lock(&mfp_mutex);
dev_id = dev_name(dev);
if (subname != NULL)
dev_id = subname;
else
dev_id = dev_name(dev);
mfpen = __raw_readl(REG_MFSEL);
@ -152,6 +158,9 @@ void mfp_set_groupg(struct device *dev)
} else if (strcmp(dev_id, "nuc900-audio") == 0) {
mfpen &= ~(GPIOG22TO23);
mfpen |= ENAC97;/*enable AC97*/
} else if (strcmp(dev_id, "nuc900-mmc-port1") == 0) {
mfpen &= ~(GPIOG18TO20);
mfpen |= (ENSD1 | 0x01);/*enable sd1*/
} else {
mfpen &= ~(GPIOG0TO1 | GPIOG2TO3);/*GPIOG[3:0]*/
}
@ -162,3 +171,30 @@ void mfp_set_groupg(struct device *dev)
}
EXPORT_SYMBOL(mfp_set_groupg);
void mfp_set_groupd(struct device *dev, const char *subname)
{
unsigned long mfpen;
const char *dev_id;
BUG_ON((!dev) && (!subname));
mutex_lock(&mfp_mutex);
if (subname != NULL)
dev_id = subname;
else
dev_id = dev_name(dev);
mfpen = __raw_readl(REG_MFSEL);
if (strcmp(dev_id, "nuc900-mmc-port0") == 0) {
mfpen &= ~GPSELD;/*enable sd0*/
mfpen |= ENSD0;
} else
mfpen &= (~GPSELD);
__raw_writel(mfpen, REG_MFSEL);
mutex_unlock(&mfp_mutex);
}
EXPORT_SYMBOL(mfp_set_groupd);