diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2014-10-02 20:29:26 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2014-10-24 09:35:38 +0200 |
| commit | cd82113a98e152b34e727718b729d0c5be44da99 (patch) | |
| tree | e2eb28695b750704420697c1557f0bc28069a1fe /drivers | |
| parent | 7ad3b6aa37ccf3caa5b8d6f7d639f2904009ed1e (diff) | |
| download | blackbird-obmc-uboot-cd82113a98e152b34e727718b729d0c5be44da99.tar.gz blackbird-obmc-uboot-cd82113a98e152b34e727718b729d0c5be44da99.zip | |
sunxi: Add mmc card-detect functionality
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/sunxi_mmc.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c index 8f4b50ba98..b47376a793 100644 --- a/drivers/mmc/sunxi_mmc.c +++ b/drivers/mmc/sunxi_mmc.c @@ -14,7 +14,9 @@ #include <asm/io.h> #include <asm/arch/clock.h> #include <asm/arch/cpu.h> +#include <asm/arch/gpio.h> #include <asm/arch/mmc.h> +#include <asm-generic/gpio.h> struct sunxi_mmc_host { unsigned mmc_no; @@ -346,10 +348,29 @@ out: return error; } +static int sunxi_mmc_getcd(struct mmc *mmc) +{ + struct sunxi_mmc_host *mmchost = mmc->priv; + int cd_pin = -1; + + switch (mmchost->mmc_no) { + case 0: cd_pin = sunxi_name_to_gpio(CONFIG_MMC0_CD_PIN); break; + case 1: cd_pin = sunxi_name_to_gpio(CONFIG_MMC1_CD_PIN); break; + case 2: cd_pin = sunxi_name_to_gpio(CONFIG_MMC2_CD_PIN); break; + case 3: cd_pin = sunxi_name_to_gpio(CONFIG_MMC3_CD_PIN); break; + } + + if (cd_pin == -1) + return 1; + + return !gpio_direction_input(cd_pin); +} + static const struct mmc_ops sunxi_mmc_ops = { .send_cmd = mmc_send_cmd, .set_ios = mmc_set_ios, .init = mmc_core_init, + .getcd = sunxi_mmc_getcd, }; int sunxi_mmc_init(int sdc_no) |
