10 #include <linux/clk.h>
30 	struct clk *clk;  member
41 	u32 val = readl_relaxed(priv->base + STM32_VREFBUF_CSR);  in stm32_vrefbuf_enable()
45 	writel_relaxed(val, priv->base + STM32_VREFBUF_CSR);  in stm32_vrefbuf_enable()
49 	 * VRR to be set. That means output has reached expected value.  in stm32_vrefbuf_enable()
53 	ret = readl_poll_timeout(priv->base + STM32_VREFBUF_CSR, val,  in stm32_vrefbuf_enable()
56 		dev_err(&rdev->dev, "stm32 vrefbuf timed out!\n");  in stm32_vrefbuf_enable()
57 		val = readl_relaxed(priv->base + STM32_VREFBUF_CSR);  in stm32_vrefbuf_enable()
59 		writel_relaxed(val, priv->base + STM32_VREFBUF_CSR);  in stm32_vrefbuf_enable()
68 	u32 val = readl_relaxed(priv->base + STM32_VREFBUF_CSR);  in stm32_vrefbuf_disable()
71 	writel_relaxed(val, priv->base + STM32_VREFBUF_CSR);  in stm32_vrefbuf_disable()
80 	return readl_relaxed(priv->base + STM32_VREFBUF_CSR) & STM32_ENVR;  in stm32_vrefbuf_is_enabled()
84 					 unsigned sel)  in stm32_vrefbuf_set_voltage_sel()  argument
87 	u32 val = readl_relaxed(priv->base + STM32_VREFBUF_CSR);  in stm32_vrefbuf_set_voltage_sel()
89 	val = (val & ~STM32_VRS) | FIELD_PREP(STM32_VRS, sel);  in stm32_vrefbuf_set_voltage_sel()
90 	writel_relaxed(val, priv->base + STM32_VREFBUF_CSR);  in stm32_vrefbuf_set_voltage_sel()
98 	u32 val = readl_relaxed(priv->base + STM32_VREFBUF_CSR);  in stm32_vrefbuf_get_voltage_sel()
130 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in stm32_vrefbuf_probe()
132 		return -ENOMEM;  in stm32_vrefbuf_probe()
135 	priv->base = devm_ioremap_resource(&pdev->dev, res);  in stm32_vrefbuf_probe()
136 	if (IS_ERR(priv->base))  in stm32_vrefbuf_probe()
137 		return PTR_ERR(priv->base);  in stm32_vrefbuf_probe()
139 	priv->clk = devm_clk_get(&pdev->dev, NULL);  in stm32_vrefbuf_probe()
140 	if (IS_ERR(priv->clk))  in stm32_vrefbuf_probe()
141 		return PTR_ERR(priv->clk);  in stm32_vrefbuf_probe()
143 	ret = clk_prepare_enable(priv->clk);  in stm32_vrefbuf_probe()
145 		dev_err(&pdev->dev, "clk prepare failed with error %d\n", ret);  in stm32_vrefbuf_probe()
149 	config.dev = &pdev->dev;  in stm32_vrefbuf_probe()
151 	config.of_node = pdev->dev.of_node;  in stm32_vrefbuf_probe()
152 	config.init_data = of_get_regulator_init_data(&pdev->dev,  in stm32_vrefbuf_probe()
153 						      pdev->dev.of_node,  in stm32_vrefbuf_probe()
159 		dev_err(&pdev->dev, "register failed with error %d\n", ret);  in stm32_vrefbuf_probe()
167 	clk_disable_unprepare(priv->clk);  in stm32_vrefbuf_probe()
178 	clk_disable_unprepare(priv->clk);  in stm32_vrefbuf_remove()
184 	{ .compatible = "st,stm32-vrefbuf", },
193 		.name  = "stm32-vrefbuf",
202 MODULE_ALIAS("platform:stm32-vrefbuf");