diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-tegra.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-tegra.c | 50 |
1 files changed, 31 insertions, 19 deletions
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 53b26502f6e2..b38d8a78f6a0 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -32,8 +32,13 @@ #include "sdhci-pltfm.h" +/* Tegra SDHOST controller vendor register definitions */ +#define SDHCI_TEGRA_VENDOR_MISC_CTRL 0x120 +#define SDHCI_MISC_CTRL_ENABLE_SDHCI_SPEC_300 0x20 + #define NVQUIRK_FORCE_SDHCI_SPEC_200 BIT(0) #define NVQUIRK_ENABLE_BLOCK_GAP_DET BIT(1) +#define NVQUIRK_ENABLE_SDHCI_SPEC_300 BIT(2) struct sdhci_tegra_soc_data { struct sdhci_pltfm_data *pdata; @@ -120,6 +125,25 @@ static irqreturn_t carddetect_irq(int irq, void *data) return IRQ_HANDLED; }; +static void tegra_sdhci_reset_exit(struct sdhci_host *host, u8 mask) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_tegra *tegra_host = pltfm_host->priv; + const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data; + + if (!(mask & SDHCI_RESET_ALL)) + return; + + /* Erratum: Enable SDHCI spec v3.00 support */ + if (soc_data->nvquirks & NVQUIRK_ENABLE_SDHCI_SPEC_300) { + u32 misc_ctrl; + + misc_ctrl = sdhci_readb(host, SDHCI_TEGRA_VENDOR_MISC_CTRL); + misc_ctrl |= SDHCI_MISC_CTRL_ENABLE_SDHCI_SPEC_300; + sdhci_writeb(host, misc_ctrl, SDHCI_TEGRA_VENDOR_MISC_CTRL); + } +} + static int tegra_sdhci_8bit(struct sdhci_host *host, int bus_width) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); @@ -148,6 +172,7 @@ static struct sdhci_ops tegra_sdhci_ops = { .read_w = tegra_sdhci_readw, .write_l = tegra_sdhci_writel, .platform_8bit_width = tegra_sdhci_8bit, + .platform_reset_exit = tegra_sdhci_reset_exit, }; #ifdef CONFIG_ARCH_TEGRA_2x_SOC @@ -178,6 +203,7 @@ static struct sdhci_pltfm_data sdhci_tegra30_pdata = { static struct sdhci_tegra_soc_data soc_data_tegra30 = { .pdata = &sdhci_tegra30_pdata, + .nvquirks = NVQUIRK_ENABLE_SDHCI_SPEC_300, }; #endif @@ -269,7 +295,6 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev) "failed to allocate power gpio\n"); goto err_power_req; } - tegra_gpio_enable(plat->power_gpio); gpio_direction_output(plat->power_gpio, 1); } @@ -280,7 +305,6 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev) "failed to allocate cd gpio\n"); goto err_cd_req; } - tegra_gpio_enable(plat->cd_gpio); gpio_direction_input(plat->cd_gpio); rc = request_irq(gpio_to_irq(plat->cd_gpio), carddetect_irq, @@ -301,7 +325,6 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev) "failed to allocate wp gpio\n"); goto err_wp_req; } - tegra_gpio_enable(plat->wp_gpio); gpio_direction_input(plat->wp_gpio); } @@ -329,23 +352,17 @@ err_add_host: clk_disable(pltfm_host->clk); clk_put(pltfm_host->clk); err_clk_get: - if (gpio_is_valid(plat->wp_gpio)) { - tegra_gpio_disable(plat->wp_gpio); + if (gpio_is_valid(plat->wp_gpio)) gpio_free(plat->wp_gpio); - } err_wp_req: if (gpio_is_valid(plat->cd_gpio)) free_irq(gpio_to_irq(plat->cd_gpio), host); err_cd_irq_req: - if (gpio_is_valid(plat->cd_gpio)) { - tegra_gpio_disable(plat->cd_gpio); + if (gpio_is_valid(plat->cd_gpio)) gpio_free(plat->cd_gpio); - } err_cd_req: - if (gpio_is_valid(plat->power_gpio)) { - tegra_gpio_disable(plat->power_gpio); + if (gpio_is_valid(plat->power_gpio)) gpio_free(plat->power_gpio); - } err_power_req: err_no_plat: sdhci_pltfm_free(pdev); @@ -362,21 +379,16 @@ static int __devexit sdhci_tegra_remove(struct platform_device *pdev) sdhci_remove_host(host, dead); - if (gpio_is_valid(plat->wp_gpio)) { - tegra_gpio_disable(plat->wp_gpio); + if (gpio_is_valid(plat->wp_gpio)) gpio_free(plat->wp_gpio); - } if (gpio_is_valid(plat->cd_gpio)) { free_irq(gpio_to_irq(plat->cd_gpio), host); - tegra_gpio_disable(plat->cd_gpio); gpio_free(plat->cd_gpio); } - if (gpio_is_valid(plat->power_gpio)) { - tegra_gpio_disable(plat->power_gpio); + if (gpio_is_valid(plat->power_gpio)) gpio_free(plat->power_gpio); - } clk_disable(pltfm_host->clk); clk_put(pltfm_host->clk); |