[1/4] usb: dwc3: exynos: Remove dead code

Message ID 20180918081653.314-2-m.szyprowski@samsung.com
State Accepted
Commit 1e041b6f313aaa966612a7e415cfc09c90d6b829
Headers show
Series
  • DWC3: fix system suspend/resume issues on Exynos5433
Related show

Commit Message

Marek Szyprowski Sept. 18, 2018, 8:16 a.m.
All supported Exynos variants provide respective generic PHY framework
based drivers for controlling USB PHYs, so there is no point
creating fake USB PHYs based on platform devices. While removing useless
code, remove calls to runtime PM, which have no effect.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

---
 drivers/usb/dwc3/dwc3-exynos.c | 75 ----------------------------------
 1 file changed, 75 deletions(-)

-- 
2.17.1

Patch

diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index a94fb1ba8f2c..0a946c66c3bb 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -13,15 +13,11 @@ 
 #include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
-#include <linux/usb/otg.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;
-	struct platform_device	*usb3_phy;
 	struct device		*dev;
 
 	struct clk		*clk;
@@ -32,61 +28,6 @@  struct dwc3_exynos {
 	struct regulator	*vdd10;
 };
 
-static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos)
-{
-	struct usb_phy_generic_platform_data pdata;
-	struct platform_device	*pdev;
-	int			ret;
-
-	memset(&pdata, 0x00, sizeof(pdata));
-
-	pdev = platform_device_alloc("usb_phy_generic", PLATFORM_DEVID_AUTO);
-	if (!pdev)
-		return -ENOMEM;
-
-	exynos->usb2_phy = pdev;
-	pdata.type = USB_PHY_TYPE_USB2;
-	pdata.gpio_reset = -1;
-
-	ret = platform_device_add_data(exynos->usb2_phy, &pdata, sizeof(pdata));
-	if (ret)
-		goto err1;
-
-	pdev = platform_device_alloc("usb_phy_generic", PLATFORM_DEVID_AUTO);
-	if (!pdev) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	exynos->usb3_phy = pdev;
-	pdata.type = USB_PHY_TYPE_USB3;
-
-	ret = platform_device_add_data(exynos->usb3_phy, &pdata, sizeof(pdata));
-	if (ret)
-		goto err2;
-
-	ret = platform_device_add(exynos->usb2_phy);
-	if (ret)
-		goto err2;
-
-	ret = platform_device_add(exynos->usb3_phy);
-	if (ret)
-		goto err3;
-
-	return 0;
-
-err3:
-	platform_device_del(exynos->usb2_phy);
-
-err2:
-	platform_device_put(exynos->usb3_phy);
-
-err1:
-	platform_device_put(exynos->usb2_phy);
-
-	return ret;
-}
-
 static int dwc3_exynos_remove_child(struct device *dev, void *unused)
 {
 	struct platform_device *pdev = to_platform_device(dev);
@@ -164,12 +105,6 @@  static int dwc3_exynos_probe(struct platform_device *pdev)
 		goto vdd10_err;
 	}
 
-	ret = dwc3_exynos_register_phys(exynos);
-	if (ret) {
-		dev_err(dev, "couldn't register PHYs\n");
-		goto phys_err;
-	}
-
 	if (node) {
 		ret = of_platform_populate(node, NULL, NULL, dev);
 		if (ret) {
@@ -185,9 +120,6 @@  static int dwc3_exynos_probe(struct platform_device *pdev)
 	return 0;
 
 populate_err:
-	platform_device_unregister(exynos->usb2_phy);
-	platform_device_unregister(exynos->usb3_phy);
-phys_err:
 	regulator_disable(exynos->vdd10);
 vdd10_err:
 	regulator_disable(exynos->vdd33);
@@ -205,8 +137,6 @@  static int dwc3_exynos_remove(struct platform_device *pdev)
 	struct dwc3_exynos	*exynos = platform_get_drvdata(pdev);
 
 	device_for_each_child(&pdev->dev, NULL, dwc3_exynos_remove_child);
-	platform_device_unregister(exynos->usb2_phy);
-	platform_device_unregister(exynos->usb3_phy);
 
 	clk_disable_unprepare(exynos->axius_clk);
 	clk_disable_unprepare(exynos->susp_clk);
@@ -258,11 +188,6 @@  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);
-	pm_runtime_set_active(dev);
-	pm_runtime_enable(dev);
-
 	return 0;
 }