Lines Matching +full:rcar +full:- +full:gen3 +full:- +full:usb2 +full:- +full:clock +full:- +full:sel

1 // SPDX-License-Identifier: GPL-2.0
3  * Renesas R-Car USB2.0 clock selector
7  * Based on renesas-cpg-mssr.c
13 #include <linux/clk-provider.h>
32 	{ .id = "hs-usb-if", },
47 	u16 val = readw(priv->base + USB20_CLKSET0);  in usb2_clock_sel_enable_extal_only()
50 		 priv->extal, priv->xtal, val);  in usb2_clock_sel_enable_extal_only()
52 	if (priv->extal && !priv->xtal && val != CLKSET0_EXTAL_ONLY)  in usb2_clock_sel_enable_extal_only()
53 		writew(CLKSET0_EXTAL_ONLY, priv->base + USB20_CLKSET0);  in usb2_clock_sel_enable_extal_only()
58 	if (priv->extal && !priv->xtal)  in usb2_clock_sel_disable_extal_only()
59 		writew(CLKSET0_PRIVATE, priv->base + USB20_CLKSET0);  in usb2_clock_sel_disable_extal_only()
67 	ret = reset_control_deassert(priv->rsts);  in usb2_clock_sel_enable()
71 	ret = clk_bulk_prepare_enable(ARRAY_SIZE(priv->clks), priv->clks);  in usb2_clock_sel_enable()
73 		reset_control_assert(priv->rsts);  in usb2_clock_sel_enable()
88 	clk_bulk_disable_unprepare(ARRAY_SIZE(priv->clks), priv->clks);  in usb2_clock_sel_disable()
89 	reset_control_assert(priv->rsts);  in usb2_clock_sel_disable()
95  * If this driver acts as a gate, ehci/ohci-platform drivers don't need
104 	{ .compatible = "renesas,rcar-gen3-usb2-clock-sel" },
130 	struct device *dev = &pdev->dev;  in rcar_usb2_clock_sel_remove()
132 	of_clk_del_provider(dev->of_node);  in rcar_usb2_clock_sel_remove()
141 	struct device *dev = &pdev->dev;  in rcar_usb2_clock_sel_probe()
142 	struct device_node *np = dev->of_node;  in rcar_usb2_clock_sel_probe()
150 		return -ENOMEM;  in rcar_usb2_clock_sel_probe()
152 	priv->base = devm_platform_ioremap_resource(pdev, 0);  in rcar_usb2_clock_sel_probe()
153 	if (IS_ERR(priv->base))  in rcar_usb2_clock_sel_probe()
154 		return PTR_ERR(priv->base);  in rcar_usb2_clock_sel_probe()
156 	memcpy(priv->clks, rcar_usb2_clocks, sizeof(priv->clks));  in rcar_usb2_clock_sel_probe()
157 	ret = devm_clk_bulk_get(dev, ARRAY_SIZE(priv->clks), priv->clks);  in rcar_usb2_clock_sel_probe()
161 	priv->rsts = devm_reset_control_array_get_shared(dev);  in rcar_usb2_clock_sel_probe()
162 	if (IS_ERR(priv->rsts))  in rcar_usb2_clock_sel_probe()
163 		return PTR_ERR(priv->rsts);  in rcar_usb2_clock_sel_probe()
167 		priv->extal = !!clk_get_rate(clk);  in rcar_usb2_clock_sel_probe()
172 		priv->xtal = !!clk_get_rate(clk);  in rcar_usb2_clock_sel_probe()
176 	if (!priv->extal && !priv->xtal) {  in rcar_usb2_clock_sel_probe()
178 		return -ENOENT;  in rcar_usb2_clock_sel_probe()
188 	priv->hw.init = &init;  in rcar_usb2_clock_sel_probe()
190 	ret = devm_clk_hw_register(dev, &priv->hw);  in rcar_usb2_clock_sel_probe()
194 	ret = of_clk_add_hw_provider(np, of_clk_hw_simple_get, &priv->hw);  in rcar_usb2_clock_sel_probe()
213 		.name	= "rcar-usb2-clock-sel",
222 MODULE_DESCRIPTION("Renesas R-Car USB2 clock selector Driver");