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| author | Pavel Pisa <ppisa4lists@pikron.com> | 2007-09-23 22:59:01 +0200 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2007-09-24 19:33:14 +0200 |
| commit | faf39ede5e6325d3e91b6e4e0017d27fbecb6022 (patch) | |
| tree | 52c99935cda486c982f1ff6c238ceb12b7601498 | |
| parent | af8350c756cb48a738474738f7bf8c0e572fa057 (diff) | |
| download | kernel_samsung_tuna-faf39ede5e6325d3e91b6e4e0017d27fbecb6022.zip kernel_samsung_tuna-faf39ede5e6325d3e91b6e4e0017d27fbecb6022.tar.gz kernel_samsung_tuna-faf39ede5e6325d3e91b6e4e0017d27fbecb6022.tar.bz2 | |
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>
| -rw-r--r-- | arch/arm/mach-imx/mx1ads.c | 2 | ||||
| -rw-r--r-- | drivers/mmc/host/imxmmc.c | 16 | ||||
| -rw-r--r-- | include/asm-arm/arch-imx/mmc.h | 5 |
3 files changed, 19 insertions, 4 deletions
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 @@ static struct platform_device *devices[] __initdata = { }; #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 void imxmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } } +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 @@ static void imxmci_check_status(unsigned long data) { 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 @@ static int imxmci_probe(struct platform_device *pdev) 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); |