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MMC: S3C24XX: Add support to invert write protect line 

Support for inverting the sense of the MMC driver's write
protect detection line.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Ben Dooks 2008-06-30 22:40:30 +01:00 committed by Pierre Ossman
parent edb5a98e43
commit cf0984c8ed
2 changed files with 11 additions and 2 deletions
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11
drivers/mmc/host/s3cmci.c
View File

@ -1083,11 +1083,18 @@ static void s3cmci_reset(struct s3cmci_host *host)
static int s3cmci_get_ro(struct mmc_host *mmc)
{
struct s3cmci_host *host = mmc_priv(mmc);
struct s3c24xx_mci_pdata *pdata = host->pdata;
int ret;
if (host->pdata->gpio_wprotect == 0)
if (pdata->gpio_wprotect == 0)
return 0;
return s3c2410_gpio_getpin(host->pdata->gpio_wprotect);
ret = s3c2410_gpio_getpin(pdata->gpio_wprotect);
if (pdata->wprotect_invert)
ret = !ret;
return ret;
}
static struct mmc_host_ops s3cmci_ops = {

2
include/asm-arm/plat-s3c24xx/mci.h
View File

@ -2,6 +2,8 @@
#define _ARCH_MCI_H
struct s3c24xx_mci_pdata {
unsigned int wprotect_invert : 1;
unsigned int gpio_detect;
unsigned int gpio_wprotect;
unsigned long ocr_avail;