Merge tag 'v4.15-rc1' into next-seccomp

Linux 4.15-rc1

1 files changed, 30 insertions, 14 deletions

diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c
index fe414e7a9c78..c4a4d7bd2766 100644
--- a/drivers/usb/dwc3/dwc3-of-simple.c
+++ b/drivers/usb/dwc3/dwc3-of-simple.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /**
  * dwc3-of-simple.c - OF glue layer for simple integrations
  *
@@ -5,15 +6,6 @@
  *
  * Author: Felipe Balbi <balbi@ti.com>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2  of
- * the License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * This is a combination of the old dwc3-qcom.c by Ivan T. Ivanov
  * <iivanov@mm-sol.com> and the original patch adding support for Xilinx' SoC
  * by Subbaraya Sundeep Bhatta <subbaraya.sundeep.bhatta@xilinx.com>
@@ -25,15 +17,16 @@
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/clk.h>
-#include <linux/clk-provider.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/pm_runtime.h>
+#include <linux/reset.h>
 
 struct dwc3_of_simple {
 	struct device		*dev;
 	struct clk		**clks;
 	int			num_clocks;
+	struct reset_control	*resets;
 };
 
 static int dwc3_of_simple_clk_init(struct dwc3_of_simple *simple, int count)
@@ -96,9 +89,21 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, simple);
 	simple->dev = dev;
 
-	ret = dwc3_of_simple_clk_init(simple, of_clk_get_parent_count(np));
-	if (ret)
+	simple->resets = of_reset_control_array_get_optional_exclusive(np);
+	if (IS_ERR(simple->resets)) {
+		ret = PTR_ERR(simple->resets);
+		dev_err(dev, "failed to get device resets, err=%d\n", ret);
 		return ret;
+	}
+
+	ret = reset_control_deassert(simple->resets);
+	if (ret)
+		goto err_resetc_put;
+
+	ret = dwc3_of_simple_clk_init(simple, of_count_phandle_with_args(np,
+						"clocks", "#clock-cells"));
+	if (ret)
+		goto err_resetc_assert;
 
 	ret = of_platform_populate(np, NULL, NULL, dev);
 	if (ret) {
@@ -107,7 +112,7 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
 			clk_put(simple->clks[i]);
 		}
 
-		return ret;
+		goto err_resetc_assert;
 	}
 
 	pm_runtime_set_active(dev);
@@ -115,6 +120,13 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
 	pm_runtime_get_sync(dev);
 
 	return 0;
+
+err_resetc_assert:
+	reset_control_assert(simple->resets);
+
+err_resetc_put:
+	reset_control_put(simple->resets);
+	return ret;
 }
 
 static int dwc3_of_simple_remove(struct platform_device *pdev)
@@ -123,12 +135,15 @@ static int dwc3_of_simple_remove(struct platform_device *pdev)
 	struct device		*dev = &pdev->dev;
 	int			i;
 
+	of_platform_depopulate(dev);
+
 	for (i = 0; i < simple->num_clocks; i++) {
 		clk_disable_unprepare(simple->clks[i]);
 		clk_put(simple->clks[i]);
 	}
 
-	of_platform_depopulate(dev);
+	reset_control_assert(simple->resets);
+	reset_control_put(simple->resets);
 
 	pm_runtime_put_sync(dev);
 	pm_runtime_disable(dev);
@@ -177,6 +192,7 @@ static const struct of_device_id of_dwc3_simple_match[] = {
 	{ .compatible = "rockchip,rk3399-dwc3" },
 	{ .compatible = "xlnx,zynqmp-dwc3" },
 	{ .compatible = "cavium,octeon-7130-usb-uctl" },
+	{ .compatible = "sprd,sc9860-dwc3" },
 	{ /* Sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, of_dwc3_simple_match);