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path: root/drivers/usb/dwc3/dwc3-exynos.c
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Diffstat (limited to 'drivers/usb/dwc3/dwc3-exynos.c')
-rw-r--r--drivers/usb/dwc3/dwc3-exynos.c71
1 files changed, 58 insertions, 13 deletions
diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index 28c8ad79f5e6..f9fb8adb785b 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -24,9 +24,10 @@
#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/usb/otg.h>
-#include <linux/usb/usb_phy_gen_xceiv.h>
+#include <linux/usb/usb_phy_generic.h>
#include <linux/of.h>
#include <linux/of_platform.h>
+#include <linux/regulator/consumer.h>
struct dwc3_exynos {
struct platform_device *usb2_phy;
@@ -34,17 +35,19 @@ struct dwc3_exynos {
struct device *dev;
struct clk *clk;
+ struct regulator *vdd33;
+ struct regulator *vdd10;
};
static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos)
{
- struct usb_phy_gen_xceiv_platform_data pdata;
+ struct usb_phy_generic_platform_data pdata;
struct platform_device *pdev;
int ret;
memset(&pdata, 0x00, sizeof(pdata));
- pdev = platform_device_alloc("usb_phy_gen_xceiv", PLATFORM_DEVID_AUTO);
+ pdev = platform_device_alloc("usb_phy_generic", PLATFORM_DEVID_AUTO);
if (!pdev)
return -ENOMEM;
@@ -56,7 +59,7 @@ static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos)
if (ret)
goto err1;
- pdev = platform_device_alloc("usb_phy_gen_xceiv", PLATFORM_DEVID_AUTO);
+ pdev = platform_device_alloc("usb_phy_generic", PLATFORM_DEVID_AUTO);
if (!pdev) {
ret = -ENOMEM;
goto err1;
@@ -107,12 +110,12 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
- int ret = -ENOMEM;
+ int ret;
exynos = devm_kzalloc(dev, sizeof(*exynos), GFP_KERNEL);
if (!exynos) {
dev_err(dev, "not enough memory\n");
- goto err1;
+ return -ENOMEM;
}
/*
@@ -122,21 +125,20 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
*/
ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (ret)
- goto err1;
+ return ret;
platform_set_drvdata(pdev, exynos);
ret = dwc3_exynos_register_phys(exynos);
if (ret) {
dev_err(dev, "couldn't register PHYs\n");
- goto err1;
+ return ret;
}
clk = devm_clk_get(dev, "usbdrd30");
if (IS_ERR(clk)) {
dev_err(dev, "couldn't get clock\n");
- ret = -EINVAL;
- goto err1;
+ return -EINVAL;
}
exynos->dev = dev;
@@ -144,23 +146,48 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
clk_prepare_enable(exynos->clk);
+ exynos->vdd33 = devm_regulator_get(dev, "vdd33");
+ if (IS_ERR(exynos->vdd33)) {
+ ret = PTR_ERR(exynos->vdd33);
+ goto err2;
+ }
+ ret = regulator_enable(exynos->vdd33);
+ if (ret) {
+ dev_err(dev, "Failed to enable VDD33 supply\n");
+ goto err2;
+ }
+
+ exynos->vdd10 = devm_regulator_get(dev, "vdd10");
+ if (IS_ERR(exynos->vdd10)) {
+ ret = PTR_ERR(exynos->vdd10);
+ goto err3;
+ }
+ ret = regulator_enable(exynos->vdd10);
+ if (ret) {
+ dev_err(dev, "Failed to enable VDD10 supply\n");
+ goto err3;
+ }
+
if (node) {
ret = of_platform_populate(node, NULL, NULL, dev);
if (ret) {
dev_err(dev, "failed to add dwc3 core\n");
- goto err2;
+ goto err4;
}
} else {
dev_err(dev, "no device node, failed to add dwc3 core\n");
ret = -ENODEV;
- goto err2;
+ goto err4;
}
return 0;
+err4:
+ regulator_disable(exynos->vdd10);
+err3:
+ regulator_disable(exynos->vdd33);
err2:
clk_disable_unprepare(clk);
-err1:
return ret;
}
@@ -174,6 +201,9 @@ static int dwc3_exynos_remove(struct platform_device *pdev)
clk_disable_unprepare(exynos->clk);
+ regulator_disable(exynos->vdd33);
+ regulator_disable(exynos->vdd10);
+
return 0;
}
@@ -192,12 +222,27 @@ static int dwc3_exynos_suspend(struct device *dev)
clk_disable(exynos->clk);
+ regulator_disable(exynos->vdd33);
+ regulator_disable(exynos->vdd10);
+
return 0;
}
static int dwc3_exynos_resume(struct device *dev)
{
struct dwc3_exynos *exynos = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regulator_enable(exynos->vdd33);
+ if (ret) {
+ dev_err(dev, "Failed to enable VDD33 supply\n");
+ return ret;
+ }
+ ret = regulator_enable(exynos->vdd10);
+ if (ret) {
+ dev_err(dev, "Failed to enable VDD10 supply\n");
+ return ret;
+ }
clk_enable(exynos->clk);