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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.c44
1 files changed, 33 insertions, 11 deletions
diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index 3951a65fea04..7bd0a95b2815 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -20,7 +20,6 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
-#include <linux/platform_data/dwc3-exynos.h>
#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/usb/otg.h>
@@ -35,6 +34,9 @@ struct dwc3_exynos {
struct device *dev;
struct clk *clk;
+ struct clk *susp_clk;
+ struct clk *axius_clk;
+
struct regulator *vdd33;
struct regulator *vdd10;
};
@@ -106,7 +108,6 @@ static int dwc3_exynos_remove_child(struct device *dev, void *unused)
static int dwc3_exynos_probe(struct platform_device *pdev)
{
struct dwc3_exynos *exynos;
- struct clk *clk;
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
@@ -133,16 +134,32 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
return ret;
}
- clk = devm_clk_get(dev, "usbdrd30");
- if (IS_ERR(clk)) {
+ exynos->dev = dev;
+
+ exynos->clk = devm_clk_get(dev, "usbdrd30");
+ if (IS_ERR(exynos->clk)) {
dev_err(dev, "couldn't get clock\n");
return -EINVAL;
}
+ clk_prepare_enable(exynos->clk);
- exynos->dev = dev;
- exynos->clk = clk;
+ exynos->susp_clk = devm_clk_get(dev, "usbdrd30_susp_clk");
+ if (IS_ERR(exynos->susp_clk)) {
+ dev_dbg(dev, "no suspend clk specified\n");
+ exynos->susp_clk = NULL;
+ }
+ clk_prepare_enable(exynos->susp_clk);
- clk_prepare_enable(exynos->clk);
+ if (of_device_is_compatible(node, "samsung,exynos7-dwusb3")) {
+ exynos->axius_clk = devm_clk_get(dev, "usbdrd30_axius_clk");
+ if (IS_ERR(exynos->axius_clk)) {
+ dev_err(dev, "no AXI UpScaler clk specified\n");
+ return -ENODEV;
+ }
+ clk_prepare_enable(exynos->axius_clk);
+ } else {
+ exynos->axius_clk = NULL;
+ }
exynos->vdd33 = devm_regulator_get(dev, "vdd33");
if (IS_ERR(exynos->vdd33)) {
@@ -185,7 +202,9 @@ err4:
err3:
regulator_disable(exynos->vdd33);
err2:
- clk_disable_unprepare(clk);
+ clk_disable_unprepare(exynos->axius_clk);
+ clk_disable_unprepare(exynos->susp_clk);
+ clk_disable_unprepare(exynos->clk);
return ret;
}
@@ -197,6 +216,8 @@ static int dwc3_exynos_remove(struct platform_device *pdev)
platform_device_unregister(exynos->usb2_phy);
platform_device_unregister(exynos->usb3_phy);
+ clk_disable_unprepare(exynos->axius_clk);
+ clk_disable_unprepare(exynos->susp_clk);
clk_disable_unprepare(exynos->clk);
regulator_disable(exynos->vdd33);
@@ -205,19 +226,19 @@ static int dwc3_exynos_remove(struct platform_device *pdev)
return 0;
}
-#ifdef CONFIG_OF
static const struct of_device_id exynos_dwc3_match[] = {
{ .compatible = "samsung,exynos5250-dwusb3" },
+ { .compatible = "samsung,exynos7-dwusb3" },
{},
};
MODULE_DEVICE_TABLE(of, exynos_dwc3_match);
-#endif
#ifdef CONFIG_PM_SLEEP
static int dwc3_exynos_suspend(struct device *dev)
{
struct dwc3_exynos *exynos = dev_get_drvdata(dev);
+ clk_disable(exynos->axius_clk);
clk_disable(exynos->clk);
regulator_disable(exynos->vdd33);
@@ -243,6 +264,7 @@ static int dwc3_exynos_resume(struct device *dev)
}
clk_enable(exynos->clk);
+ clk_enable(exynos->axius_clk);
/* runtime set active to reflect active state. */
pm_runtime_disable(dev);
@@ -266,7 +288,7 @@ static struct platform_driver dwc3_exynos_driver = {
.remove = dwc3_exynos_remove,
.driver = {
.name = "exynos-dwc3",
- .of_match_table = of_match_ptr(exynos_dwc3_match),
+ .of_match_table = exynos_dwc3_match,
.pm = DEV_PM_OPS,
},
};