1 files changed, 71 insertions, 124 deletions

diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 08b06e9a3a2..d93a063a36f 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -24,6 +24,7 @@
 #include <linux/gpio.h>
 #include <linux/mmc/card.h>
 #include <linux/mmc/host.h>
+#include <linux/mmc/slot-gpio.h>
 
 #include <asm/gpio.h>
 
@@ -31,38 +32,28 @@
 
 /* Tegra SDHOST controller vendor register definitions */
 #define SDHCI_TEGRA_VENDOR_MISC_CTRL		0x120
+#define SDHCI_MISC_CTRL_ENABLE_SDR104		0x8
+#define SDHCI_MISC_CTRL_ENABLE_SDR50		0x10
 #define SDHCI_MISC_CTRL_ENABLE_SDHCI_SPEC_300	0x20
+#define SDHCI_MISC_CTRL_ENABLE_DDR50		0x200
 
 #define NVQUIRK_FORCE_SDHCI_SPEC_200	BIT(0)
 #define NVQUIRK_ENABLE_BLOCK_GAP_DET	BIT(1)
 #define NVQUIRK_ENABLE_SDHCI_SPEC_300	BIT(2)
+#define NVQUIRK_DISABLE_SDR50		BIT(3)
+#define NVQUIRK_DISABLE_SDR104		BIT(4)
+#define NVQUIRK_DISABLE_DDR50		BIT(5)
 
 struct sdhci_tegra_soc_data {
-	struct sdhci_pltfm_data *pdata;
+	const struct sdhci_pltfm_data *pdata;
 	u32 nvquirks;
 };
 
 struct sdhci_tegra {
 	const struct sdhci_tegra_soc_data *soc_data;
-	int cd_gpio;
-	int wp_gpio;
 	int power_gpio;
-	int is_8bit;
 };
 
-static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg)
-{
-	u32 val;
-
-	if (unlikely(reg == SDHCI_PRESENT_STATE)) {
-		/* Use wp_gpio here instead? */
-		val = readl(host->ioaddr + reg);
-		return val | SDHCI_WRITE_PROTECT;
-	}
-
-	return readl(host->ioaddr + reg);
-}
-
 static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg)
 {
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -107,50 +98,42 @@ static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
 
 static unsigned int tegra_sdhci_get_ro(struct sdhci_host *host)
 {
-	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-	struct sdhci_tegra *tegra_host = pltfm_host->priv;
-
-	if (!gpio_is_valid(tegra_host->wp_gpio))
-		return -1;
-
-	return gpio_get_value(tegra_host->wp_gpio);
+	return mmc_gpio_get_ro(host->mmc);
 }
 
-static irqreturn_t carddetect_irq(int irq, void *data)
-{
-	struct sdhci_host *sdhost = (struct sdhci_host *)data;
-
-	tasklet_schedule(&sdhost->card_tasklet);
-	return IRQ_HANDLED;
-};
-
-static void tegra_sdhci_reset_exit(struct sdhci_host *host, u8 mask)
+static void tegra_sdhci_reset(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;
+	u32 misc_ctrl;
+
+	sdhci_reset(host, mask);
 
 	if (!(mask & SDHCI_RESET_ALL))
 		return;
 
+	misc_ctrl = sdhci_readw(host, SDHCI_TEGRA_VENDOR_MISC_CTRL);
 	/* 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);
+	if (soc_data->nvquirks & NVQUIRK_ENABLE_SDHCI_SPEC_300)
 		misc_ctrl |= SDHCI_MISC_CTRL_ENABLE_SDHCI_SPEC_300;
-		sdhci_writeb(host, misc_ctrl, SDHCI_TEGRA_VENDOR_MISC_CTRL);
-	}
+	/* Don't advertise UHS modes which aren't supported yet */
+	if (soc_data->nvquirks & NVQUIRK_DISABLE_SDR50)
+		misc_ctrl &= ~SDHCI_MISC_CTRL_ENABLE_SDR50;
+	if (soc_data->nvquirks & NVQUIRK_DISABLE_DDR50)
+		misc_ctrl &= ~SDHCI_MISC_CTRL_ENABLE_DDR50;
+	if (soc_data->nvquirks & NVQUIRK_DISABLE_SDR104)
+		misc_ctrl &= ~SDHCI_MISC_CTRL_ENABLE_SDR104;
+	sdhci_writew(host, misc_ctrl, SDHCI_TEGRA_VENDOR_MISC_CTRL);
 }
 
-static int tegra_sdhci_buswidth(struct sdhci_host *host, int bus_width)
+static void tegra_sdhci_set_bus_width(struct sdhci_host *host, int bus_width)
 {
-	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-	struct sdhci_tegra *tegra_host = pltfm_host->priv;
 	u32 ctrl;
 
 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
-	if (tegra_host->is_8bit && bus_width == MMC_BUS_WIDTH_8) {
+	if ((host->mmc->caps & MMC_CAP_8_BIT_DATA) &&
+	    (bus_width == MMC_BUS_WIDTH_8)) {
 		ctrl &= ~SDHCI_CTRL_4BITBUS;
 		ctrl |= SDHCI_CTRL_8BITBUS;
 	} else {
@@ -161,24 +144,25 @@ static int tegra_sdhci_buswidth(struct sdhci_host *host, int bus_width)
 			ctrl &= ~SDHCI_CTRL_4BITBUS;
 	}
 	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
-	return 0;
 }
 
-static struct sdhci_ops tegra_sdhci_ops = {
+static const struct sdhci_ops tegra_sdhci_ops = {
 	.get_ro     = tegra_sdhci_get_ro,
-	.read_l     = tegra_sdhci_readl,
 	.read_w     = tegra_sdhci_readw,
 	.write_l    = tegra_sdhci_writel,
-	.platform_bus_width = tegra_sdhci_buswidth,
-	.platform_reset_exit = tegra_sdhci_reset_exit,
+	.set_clock  = sdhci_set_clock,
+	.set_bus_width = tegra_sdhci_set_bus_width,
+	.reset      = tegra_sdhci_reset,
+	.set_uhs_signaling = sdhci_set_uhs_signaling,
+	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
 };
 
-#ifdef CONFIG_ARCH_TEGRA_2x_SOC
-static struct sdhci_pltfm_data sdhci_tegra20_pdata = {
+static const struct sdhci_pltfm_data sdhci_tegra20_pdata = {
 	.quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
 		  SDHCI_QUIRK_SINGLE_POWER_WRITE |
 		  SDHCI_QUIRK_NO_HISPD_BIT |
-		  SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC,
+		  SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC |
+		  SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
 	.ops  = &tegra_sdhci_ops,
 };
 
@@ -187,48 +171,59 @@ static struct sdhci_tegra_soc_data soc_data_tegra20 = {
 	.nvquirks = NVQUIRK_FORCE_SDHCI_SPEC_200 |
 		    NVQUIRK_ENABLE_BLOCK_GAP_DET,
 };
-#endif
 
-#ifdef CONFIG_ARCH_TEGRA_3x_SOC
-static struct sdhci_pltfm_data sdhci_tegra30_pdata = {
+static const struct sdhci_pltfm_data sdhci_tegra30_pdata = {
 	.quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
 		  SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
 		  SDHCI_QUIRK_SINGLE_POWER_WRITE |
 		  SDHCI_QUIRK_NO_HISPD_BIT |
-		  SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC,
+		  SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC |
+		  SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
 	.ops  = &tegra_sdhci_ops,
 };
 
 static struct sdhci_tegra_soc_data soc_data_tegra30 = {
 	.pdata = &sdhci_tegra30_pdata,
-	.nvquirks = NVQUIRK_ENABLE_SDHCI_SPEC_300,
+	.nvquirks = NVQUIRK_ENABLE_SDHCI_SPEC_300 |
+		    NVQUIRK_DISABLE_SDR50 |
+		    NVQUIRK_DISABLE_SDR104,
+};
+
+static const struct sdhci_pltfm_data sdhci_tegra114_pdata = {
+	.quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
+		  SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
+		  SDHCI_QUIRK_SINGLE_POWER_WRITE |
+		  SDHCI_QUIRK_NO_HISPD_BIT |
+		  SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC |
+		  SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
+	.ops  = &tegra_sdhci_ops,
+};
+
+static struct sdhci_tegra_soc_data soc_data_tegra114 = {
+	.pdata = &sdhci_tegra114_pdata,
+	.nvquirks = NVQUIRK_DISABLE_SDR50 |
+		    NVQUIRK_DISABLE_DDR50 |
+		    NVQUIRK_DISABLE_SDR104,
 };
-#endif
 
 static const struct of_device_id sdhci_tegra_dt_match[] = {
-#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+	{ .compatible = "nvidia,tegra124-sdhci", .data = &soc_data_tegra114 },
+	{ .compatible = "nvidia,tegra114-sdhci", .data = &soc_data_tegra114 },
 	{ .compatible = "nvidia,tegra30-sdhci", .data = &soc_data_tegra30 },
-#endif
-#ifdef CONFIG_ARCH_TEGRA_2x_SOC
 	{ .compatible = "nvidia,tegra20-sdhci", .data = &soc_data_tegra20 },
-#endif
 	{}
 };
-MODULE_DEVICE_TABLE(of, sdhci_dt_ids);
+MODULE_DEVICE_TABLE(of, sdhci_tegra_dt_match);
 
-static void sdhci_tegra_parse_dt(struct device *dev,
-					struct sdhci_tegra *tegra_host)
+static int sdhci_tegra_parse_dt(struct device *dev)
 {
 	struct device_node *np = dev->of_node;
-	u32 bus_width;
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_tegra *tegra_host = pltfm_host->priv;
 
-	tegra_host->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0);
-	tegra_host->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0);
 	tegra_host->power_gpio = of_get_named_gpio(np, "power-gpios", 0);
-
-	if (of_property_read_u32(np, "bus-width", &bus_width) == 0 &&
-	    bus_width == 8)
-		tegra_host->is_8bit = 1;
+	return mmc_of_parse(host->mmc);
 }
 
 static int sdhci_tegra_probe(struct platform_device *pdev)
@@ -246,7 +241,7 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
 		return -EINVAL;
 	soc_data = match->data;
 
-	host = sdhci_pltfm_init(pdev, soc_data->pdata);
+	host = sdhci_pltfm_init(pdev, soc_data->pdata, 0);
 	if (IS_ERR(host))
 		return PTR_ERR(host);
 	pltfm_host = sdhci_priv(host);
@@ -260,7 +255,9 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
 	tegra_host->soc_data = soc_data;
 	pltfm_host->priv = tegra_host;
 
-	sdhci_tegra_parse_dt(&pdev->dev, tegra_host);
+	rc = sdhci_tegra_parse_dt(&pdev->dev);
+	if (rc)
+		goto err_parse_dt;
 
 	if (gpio_is_valid(tegra_host->power_gpio)) {
 		rc = gpio_request(tegra_host->power_gpio, "sdhci_power");
@@ -272,37 +269,6 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
 		gpio_direction_output(tegra_host->power_gpio, 1);
 	}
 
-	if (gpio_is_valid(tegra_host->cd_gpio)) {
-		rc = gpio_request(tegra_host->cd_gpio, "sdhci_cd");
-		if (rc) {
-			dev_err(mmc_dev(host->mmc),
-				"failed to allocate cd gpio\n");
-			goto err_cd_req;
-		}
-		gpio_direction_input(tegra_host->cd_gpio);
-
-		rc = request_irq(gpio_to_irq(tegra_host->cd_gpio),
-				 carddetect_irq,
-				 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
-				 mmc_hostname(host->mmc), host);
-
-		if (rc)	{
-			dev_err(mmc_dev(host->mmc), "request irq error\n");
-			goto err_cd_irq_req;
-		}
-
-	}
-
-	if (gpio_is_valid(tegra_host->wp_gpio)) {
-		rc = gpio_request(tegra_host->wp_gpio, "sdhci_wp");
-		if (rc) {
-			dev_err(mmc_dev(host->mmc),
-				"failed to allocate wp gpio\n");
-			goto err_wp_req;
-		}
-		gpio_direction_input(tegra_host->wp_gpio);
-	}
-
 	clk = clk_get(mmc_dev(host->mmc), NULL);
 	if (IS_ERR(clk)) {
 		dev_err(mmc_dev(host->mmc), "clk err\n");
@@ -312,9 +278,6 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
 	clk_prepare_enable(clk);
 	pltfm_host->clk = clk;
 
-	if (tegra_host->is_8bit)
-		host->mmc->caps |= MMC_CAP_8_BIT_DATA;
-
 	rc = sdhci_add_host(host);
 	if (rc)
 		goto err_add_host;
@@ -325,18 +288,10 @@ err_add_host:
 	clk_disable_unprepare(pltfm_host->clk);
 	clk_put(pltfm_host->clk);
 err_clk_get:
-	if (gpio_is_valid(tegra_host->wp_gpio))
-		gpio_free(tegra_host->wp_gpio);
-err_wp_req:
-	if (gpio_is_valid(tegra_host->cd_gpio))
-		free_irq(gpio_to_irq(tegra_host->cd_gpio), host);
-err_cd_irq_req:
-	if (gpio_is_valid(tegra_host->cd_gpio))
-		gpio_free(tegra_host->cd_gpio);
-err_cd_req:
 	if (gpio_is_valid(tegra_host->power_gpio))
 		gpio_free(tegra_host->power_gpio);
 err_power_req:
+err_parse_dt:
 err_alloc_tegra_host:
 	sdhci_pltfm_free(pdev);
 	return rc;
@@ -351,14 +306,6 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
 
 	sdhci_remove_host(host, dead);
 
-	if (gpio_is_valid(tegra_host->wp_gpio))
-		gpio_free(tegra_host->wp_gpio);
-
-	if (gpio_is_valid(tegra_host->cd_gpio)) {
-		free_irq(gpio_to_irq(tegra_host->cd_gpio), host);
-		gpio_free(tegra_host->cd_gpio);
-	}
-
 	if (gpio_is_valid(tegra_host->power_gpio))
 		gpio_free(tegra_host->power_gpio);