kernel/dw_mmc-rockchip.diff at release-4.4 · masafumiohta/kernel · GitHub

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diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c
old mode 100644
new mode 100755
index 1b4b62c4f91f..c3420990ae24
--- a/drivers/mmc/host/dw_mmc-rockchip.c
+++ b/drivers/mmc/host/dw_mmc-rockchip.c
@@ -13,11 +13,19 @@
 #include <linux/mmc/host.h>
 #include <linux/mmc/dw_mmc.h>
 #include <linux/of_address.h>
+#include <linux/regulator/consumer.h>
 #include <linux/slab.h>
+#include <linux/delay.h>

 #include "dw_mmc.h"
 #include "dw_mmc-pltfm.h"

+#include <dt-bindings/gpio/gpio.h>
+#ifdef CONFIG_OF
+#include <linux/of_gpio.h>
+#endif
+
+
 #define RK3288_CLKGEN_DIV       2

 struct dw_mci_rockchip_priv_data {
@@ -146,7 +154,7 @@ static int dw_mci_rk3288_execute_tuning(struct dw_mci_slot *slot, u32 opcode)
 	}

 	if (range_count == 0) {
-		dev_warn_ratelimited(host->dev, "All phases bad!");
+		dev_warn(host->dev, "All phases bad!");
 		ret = -EIO;
 		goto free;
 	}
@@ -230,16 +238,26 @@ static int dw_mci_rk3288_parse_dt(struct dw_mci *host)

 static int dw_mci_rockchip_init(struct dw_mci *host)
 {
+	struct device_node *np = host->dev->of_node;
+	int gpio;
+	enum of_gpio_flags flags;
+
 	/* It is slot 8 on Rockchip SoCs */
 	host->sdio_id0 = 8;

 	/* It needs this quirk on all Rockchip SoCs */
 	host->pdata->quirks |= DW_MCI_QUIRK_BROKEN_DTO;

-	if (of_device_is_compatible(host->dev->of_node,
-				    "rockchip,rk3308-dw-mshc"))
-		host->pdata->quirks |= DW_MCI_QUIRK_BROKEN_XFER;
+	gpio = of_get_named_gpio_flags(np, "maskrom_gpio", 0, &flags);

+	if (gpio_is_valid(gpio)) {
+		if(!gpio_request(gpio, "maskrom_gpio")) {
+			gpio_direction_output(gpio, (flags==GPIO_ACTIVE_HIGH)?1:0);
+			gpio_free(gpio);
+			mdelay(10);
+			dev_info(host->dev, "set maskrom gpio to enable emmc\n");
+		}
+	}
 	return 0;
 }

@@ -289,6 +307,21 @@ static int dw_mci_rockchip_probe(struct platform_device *pdev)
 	return dw_mci_pltfm_register(pdev, drv_data);
 }

+static void dw_mci_rockchip_platfm_shutdown(struct platform_device *pdev)
+{
+	struct dw_mci *host = platform_get_drvdata(pdev);
+	struct mmc_host *mmc = host->slot[0]->mmc;
+	int ret;
+
+	mdelay(20);
+
+	if (!IS_ERR(mmc->supply.vmmc))
+		ret = regulator_enable(mmc->supply.vmmc);
+
+	if (!IS_ERR(mmc->supply.vqmmc))
+		regulator_set_voltage(mmc->supply.vqmmc, 3000000, 3300000);
+}
+
 #ifdef CONFIG_PM_SLEEP
 static int dw_mci_rockchip_suspend(struct device *dev)
 {
@@ -312,6 +345,7 @@ static SIMPLE_DEV_PM_OPS(dw_mci_rockchip_pmops,
 static struct platform_driver dw_mci_rockchip_pltfm_driver = {
 	.probe		= dw_mci_rockchip_probe,
 	.remove		= dw_mci_pltfm_remove,
+	.shutdown	= dw_mci_rockchip_platfm_shutdown,
 	.driver		= {
 		.name		= "dwmmc_rockchip",
 		.of_match_table	= dw_mci_rockchip_match,