diff options
Diffstat (limited to 'recipes/linux/linux/acern30/n30-mmc-wprotect.patch')
| -rw-r--r-- | recipes/linux/linux/acern30/n30-mmc-wprotect.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/recipes/linux/linux/acern30/n30-mmc-wprotect.patch b/recipes/linux/linux/acern30/n30-mmc-wprotect.patch new file mode 100644 index 0000000000..e319432c6c --- /dev/null +++ b/recipes/linux/linux/acern30/n30-mmc-wprotect.patch @@ -0,0 +1,54 @@ +This adds support for the write protect switch on the n30. + +It also adds some code to the generic s3c2410sdi driver so that the +write protect switch actually does something. + +But I'm not sure if I want to add support for the write protect switch +since it really protect against anything. Using the switch is +entirely up to software, and saying that the card is write protected +when it really isn't sounds like a bad idea. "Secure" Digital indeed. + +Index: linux-2.6.14/arch/arm/mach-s3c2410/mach-n30.c +=================================================================== +--- linux-2.6.14.orig/arch/arm/mach-s3c2410/mach-n30.c ++++ linux-2.6.14/arch/arm/mach-s3c2410/mach-n30.c +@@ -270,6 +270,7 @@ static void n30_mmc_set_power(unsigned i + + static struct s3c24xx_mmc_platdata n30_mmc_cfg = { + .gpio_detect = S3C2410_GPF1, ++ .gpio_wprotect = S3C2410_GPG10, + .set_power = n30_mmc_set_power, + .f_max = 3000000, + .ocr_avail = MMC_VDD_32_33, +Index: linux-2.6.14/drivers/mmc/s3c2410mci.c +=================================================================== +--- linux-2.6.14.orig/drivers/mmc/s3c2410mci.c ++++ linux-2.6.14/drivers/mmc/s3c2410mci.c +@@ -515,6 +515,17 @@ static void s3c2410sdi_set_ios(struct mm + + } + ++static int s3c2410sdi_get_ro(struct mmc_host* mmc) ++{ ++ struct s3c2410sdi_host *host = mmc_priv(mmc); ++ int r; ++ ++ r = s3c2410_gpio_getpin(host->pdata->gpio_wprotect); ++ if (host->pdata->wprotect_polarity) ++ r = !r; ++ return r; ++} ++ + static struct mmc_host_ops s3c2410sdi_ops = { + .request = s3c2410sdi_request, + .set_ios = s3c2410sdi_set_ios, +@@ -643,6 +654,9 @@ static int s3c2410sdi_probe(struct devic + mmc->f_max = clk_get_rate(host->clk) / 2; + mmc->caps = MMC_CAP_4_BIT_DATA; + ++ if (host->pdata->gpio_wprotect) ++ mmc->ops->get_ro = s3c2410sdi_get_ro; ++ + /* HACK: There seems to be a hardware bug in TomTom GO. */ + /*if(mmc->f_max>3000000) mmc->f_max=3000000;*/ + |