diff options
| author | Nikita Kiryanov | 2012-12-03 02:19:44 +0000 |
|---|---|---|
| committer | Tom Rini | 2013-03-08 16:41:13 -0500 |
| commit | e874d5b001e9d7ea0fc7596ef0fe6dd520ed8ec6 (patch) | |
| tree | 986ee326891b81627b807faaa381dff0fea1a8d2 /drivers | |
| parent | cc22b0c0122cee0ab59dcc3c06c52835b38e8791 (diff) | |
omap_hsmmc: implement driver check for card detection
Implement driver check for card detection.
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/omap_hsmmc.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c index 0fdbac39126..cb1a7bdd654 100644 --- a/drivers/mmc/omap_hsmmc.c +++ b/drivers/mmc/omap_hsmmc.c @@ -30,6 +30,7 @@ #include <twl4030.h> #include <twl6030.h> #include <twl6035.h> +#include <asm/gpio.h> #include <asm/io.h> #include <asm/arch/mmc_host_def.h> #include <asm/arch/sys_proto.h> @@ -40,6 +41,7 @@ struct omap_hsmmc_data { struct hsmmc *base_addr; + int cd_gpio; }; /* If we fail after 1 second wait, something is really bad */ @@ -51,6 +53,36 @@ static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, static struct mmc hsmmc_dev[3]; static struct omap_hsmmc_data hsmmc_dev_data[3]; +#if (defined(CONFIG_OMAP_GPIO) && !defined(CONFIG_SPL_BUILD)) || \ + (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT)) +static int omap_mmc_setup_gpio_in(int gpio, const char *label) +{ + if (!gpio_is_valid(gpio)) + return -1; + + if (gpio_request(gpio, label) < 0) + return -1; + + if (gpio_direction_input(gpio) < 0) + return -1; + + return gpio; +} + +static int omap_mmc_getcd(struct mmc *mmc) +{ + int cd_gpio = ((struct omap_hsmmc_data *)mmc->priv)->cd_gpio; + return gpio_get_value(cd_gpio); +} +#else +static inline int omap_mmc_setup_gpio_in(int gpio, const char *label) +{ + return -1; +} + +#define omap_mmc_getcd NULL +#endif + #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER) static void omap4_vmmc_pbias_config(struct mmc *mmc) { @@ -548,7 +580,7 @@ static void mmc_set_ios(struct mmc *mmc) writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); } -int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max) +int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio) { struct mmc *mmc = &hsmmc_dev[dev_index]; struct omap_hsmmc_data *priv_data = &hsmmc_dev_data[dev_index]; @@ -557,7 +589,7 @@ int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max) mmc->send_cmd = mmc_send_cmd; mmc->set_ios = mmc_set_ios; mmc->init = mmc_init_setup; - mmc->getcd = NULL; + mmc->getcd = omap_mmc_getcd; mmc->priv = priv_data; switch (dev_index) { @@ -578,6 +610,7 @@ int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max) priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE; return 1; } + priv_data->cd_gpio = omap_mmc_setup_gpio_in(cd_gpio, "mmc_cd"); mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; mmc->host_caps = (MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_HC) & ~host_caps_mask; |