clk: renesas: rcar-usb2-clock-sel: Add reset_control (1ab4f439) · Commits · 戴 / test

drivers/clk/renesas/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -161,6 +161,7 @@ config CLK_RCAR_GEN3_CPG
		config CLK_RCAR_USB2_CLOCK_SEL
		bool "Renesas R-Car USB2 clock selector support"
		depends on ARCH_RENESAS \|\| COMPILE_TEST
		select RESET_CONTROLLER
		help
		This is a driver for R-Car USB2 clock selector

+14 −1

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@
		#include <linux/platform_device.h>
		#include <linux/pm.h>
		#include <linux/pm_runtime.h>
		#include <linux/reset.h>
		#include <linux/slab.h>

		#define USB20_CLKSET0 0x00
		@@ -35,6 +36,7 @@ struct usb2_clock_sel_priv {
		void __iomem *base;
		struct clk_hw hw;
		struct clk_bulk_data clks[ARRAY_SIZE(rcar_usb2_clocks)];
		struct reset_control *rsts;
		bool extal;
		bool xtal;
		};
		@@ -62,10 +64,16 @@ static int usb2_clock_sel_enable(struct clk_hw *hw)
		struct usb2_clock_sel_priv *priv = to_priv(hw);
		int ret;

		ret = clk_bulk_prepare_enable(ARRAY_SIZE(priv->clks), priv->clks);
		ret = reset_control_deassert(priv->rsts);
		if (ret)
		return ret;

		ret = clk_bulk_prepare_enable(ARRAY_SIZE(priv->clks), priv->clks);
		if (ret) {
		reset_control_assert(priv->rsts);
		return ret;
		}

		usb2_clock_sel_enable_extal_only(priv);

		return 0;
		@@ -78,6 +86,7 @@ static void usb2_clock_sel_disable(struct clk_hw *hw)
		usb2_clock_sel_disable_extal_only(priv);

		clk_bulk_disable_unprepare(ARRAY_SIZE(priv->clks), priv->clks);
		reset_control_assert(priv->rsts);
		}

		/*
		@@ -151,6 +160,10 @@ static int rcar_usb2_clock_sel_probe(struct platform_device *pdev)
		if (ret < 0)
		return ret;

		priv->rsts = devm_reset_control_array_get(dev, true, false);
		if (IS_ERR(priv->rsts))
		return PTR_ERR(priv->rsts);

		pm_runtime_enable(dev);
		pm_runtime_get_sync(dev);