arm: i.MX/MX1 SDHC implements SD cards read-only switch read-back
The patch enables to define MMC host get_ro() method through platform data.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/arch/arm/mach-imx/mx1ads.c b/arch/arm/mach-imx/mx1ads.c
index da893c8..a9778c1 100644
--- a/arch/arm/mach-imx/mx1ads.c
+++ b/arch/arm/mach-imx/mx1ads.c
@@ -116,7 +116,7 @@
};
#ifdef CONFIG_MMC_IMX
-static int mx1ads_mmc_card_present(void)
+static int mx1ads_mmc_card_present(struct device *dev)
{
/* MMC/SD Card Detect is PB 20 on MX1ADS V1.0.7 */
return (SSR(1) & (1 << 20) ? 0 : 1);
diff --git a/drivers/mmc/host/imxmmc.c b/drivers/mmc/host/imxmmc.c
index e33c123..6ebc41e 100644
--- a/drivers/mmc/host/imxmmc.c
+++ b/drivers/mmc/host/imxmmc.c
@@ -884,9 +884,21 @@
}
}
+static int imxmci_get_ro(struct mmc_host *mmc)
+{
+ struct imxmci_host *host = mmc_priv(mmc);
+
+ if (host->pdata && host->pdata->get_ro)
+ return host->pdata->get_ro(mmc_dev(mmc));
+ /* Host doesn't support read only detection so assume writeable */
+ return 0;
+}
+
+
static const struct mmc_host_ops imxmci_ops = {
.request = imxmci_request,
.set_ios = imxmci_set_ios,
+ .get_ro = imxmci_get_ro,
};
static struct resource *platform_device_resource(struct platform_device *dev, unsigned int mask, int nr)
@@ -913,7 +925,7 @@
{
struct imxmci_host *host = (struct imxmci_host *)data;
- if( host->pdata->card_present() != host->present ) {
+ if( host->pdata->card_present(mmc_dev(host->mmc)) != host->present ) {
host->present ^= 1;
dev_info(mmc_dev(host->mmc), "card %s\n",
host->present ? "inserted" : "removed");
@@ -1022,7 +1034,7 @@
if (ret)
goto out;
- host->present = host->pdata->card_present();
+ host->present = host->pdata->card_present(mmc_dev(mmc));
init_timer(&host->timer);
host->timer.data = (unsigned long)host;
host->timer.function = imxmci_check_status;
diff --git a/include/asm-arm/arch-imx/mmc.h b/include/asm-arm/arch-imx/mmc.h
index 84c7269..4712f35 100644
--- a/include/asm-arm/arch-imx/mmc.h
+++ b/include/asm-arm/arch-imx/mmc.h
@@ -3,8 +3,11 @@
#include <linux/mmc/host.h>
+struct device;
+
struct imxmmc_platform_data {
- int (*card_present)(void);
+ int (*card_present)(struct device *);
+ int (*get_ro)(struct device *);
};
extern void imx_set_mmc_info(struct imxmmc_platform_data *info);