修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/clk/renesas/rcar-usb2-clock-sel.c
..
..
@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0
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2
 /*
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  * Renesas R-Car USB2.0 clock selector
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  *
..
..
@@ -6,21 +7,19 @@
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  * Based on renesas-cpg-mssr.c
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  *
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  * Copyright (C) 2015 Glider bvba
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; version 2 of the License.
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  */
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11
 
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 #include <linux/clk.h>
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13
 #include <linux/clk-provider.h>
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14
 #include <linux/device.h>
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 #include <linux/init.h>
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+#include <linux/io.h>
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 #include <linux/module.h>
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 #include <linux/of_device.h>
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 #include <linux/platform_device.h>
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 #include <linux/pm.h>
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 #include <linux/pm_runtime.h>
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+#include <linux/reset.h>
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 #include <linux/slab.h>
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24
 
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 #define USB20_CLKSET0		0x00
..
..
@@ -28,9 +27,16 @@
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 #define CLKSET0_PRIVATE		BIT(0)
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 #define CLKSET0_EXTAL_ONLY	(CLKSET0_INTCLK_EN | CLKSET0_PRIVATE)
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29
 
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+static const struct clk_bulk_data rcar_usb2_clocks[] = {
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+	{ .id = "ehci_ohci", },
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+	{ .id = "hs-usb-if", },
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+};
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+
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 struct usb2_clock_sel_priv {
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36
 	void __iomem *base;
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 	struct clk_hw hw;
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+	struct clk_bulk_data clks[ARRAY_SIZE(rcar_usb2_clocks)];
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+	struct reset_control *rsts;
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 	bool extal;
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 	bool xtal;
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42
 };
..
..
@@ -55,14 +61,32 @@
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61
 
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 static int usb2_clock_sel_enable(struct clk_hw *hw)
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 {
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-	usb2_clock_sel_enable_extal_only(to_priv(hw));
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+	struct usb2_clock_sel_priv *priv = to_priv(hw);
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+	int ret;
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+
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+	ret = reset_control_deassert(priv->rsts);
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+	if (ret)
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+		return ret;
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+
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+	ret = clk_bulk_prepare_enable(ARRAY_SIZE(priv->clks), priv->clks);
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+	if (ret) {
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+		reset_control_assert(priv->rsts);
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+		return ret;
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+	}
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+
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+	usb2_clock_sel_enable_extal_only(priv);
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78
 
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 	return 0;
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80
 }
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81
 
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 static void usb2_clock_sel_disable(struct clk_hw *hw)
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 {
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-	usb2_clock_sel_disable_extal_only(to_priv(hw));
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+	struct usb2_clock_sel_priv *priv = to_priv(hw);
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+
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+	usb2_clock_sel_disable_extal_only(priv);
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+
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+	clk_bulk_disable_unprepare(ARRAY_SIZE(priv->clks), priv->clks);
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+	reset_control_assert(priv->rsts);
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90
 }
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91
 
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 /*
..
..
@@ -104,10 +128,8 @@
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 static int rcar_usb2_clock_sel_remove(struct platform_device *pdev)
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 {
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 	struct device *dev = &pdev->dev;
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-	struct usb2_clock_sel_priv *priv = platform_get_drvdata(pdev);
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131
 
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 	of_clk_del_provider(dev->of_node);
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-	clk_hw_unregister(&priv->hw);
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133
 	pm_runtime_put(dev);
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 	pm_runtime_disable(dev);
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135
 
..
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@@ -119,21 +141,26 @@
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 	struct device *dev = &pdev->dev;
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 	struct device_node *np = dev->of_node;
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 	struct usb2_clock_sel_priv *priv;
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-	struct resource *res;
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 	struct clk *clk;
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-	struct clk_init_data init = {};
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+	struct clk_init_data init;
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+	int ret;
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147
 
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 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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 	if (!priv)
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 		return -ENOMEM;
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151
 
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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-	priv->base = devm_ioremap_resource(dev, res);
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+	priv->base = devm_platform_ioremap_resource(pdev, 0);
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 	if (IS_ERR(priv->base))
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 		return PTR_ERR(priv->base);
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-	pm_runtime_enable(dev);
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-	pm_runtime_get_sync(dev);
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+	memcpy(priv->clks, rcar_usb2_clocks, sizeof(priv->clks));
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+	ret = devm_clk_bulk_get(dev, ARRAY_SIZE(priv->clks), priv->clks);
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+	if (ret < 0)
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+		return ret;
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+
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+	priv->rsts = devm_reset_control_array_get(dev, true, false);
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+	if (IS_ERR(priv->rsts))
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+		return PTR_ERR(priv->rsts);
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 	clk = devm_clk_get(dev, "usb_extal");
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 	if (!IS_ERR(clk) && !clk_prepare_enable(clk)) {
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@@ -151,6 +178,8 @@
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 		return -ENOENT;
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 	}
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+	pm_runtime_enable(dev);
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+	pm_runtime_get_sync(dev);
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 	platform_set_drvdata(pdev, priv);
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 	dev_set_drvdata(dev, priv);
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185
 
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@@ -161,11 +190,20 @@
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 	init.num_parents = 0;
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 	priv->hw.init = &init;
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192
 
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-	clk = clk_register(NULL, &priv->hw);
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-	if (IS_ERR(clk))
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-		return PTR_ERR(clk);
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+	ret = devm_clk_hw_register(dev, &priv->hw);
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+	if (ret)
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+		goto pm_put;
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-	return of_clk_add_hw_provider(np, of_clk_hw_simple_get, &priv->hw);
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+	ret = of_clk_add_hw_provider(np, of_clk_hw_simple_get, &priv->hw);
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+	if (ret)
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+		goto pm_put;
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+
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+	return 0;
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+
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+pm_put:
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+	pm_runtime_put(dev);
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+	pm_runtime_disable(dev);
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+	return ret;
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 }
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 static const struct dev_pm_ops rcar_usb2_clock_sel_pm_ops = {