1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Sparx5 SoC temperature sensor driver
38 	u32 val = readl(hwmon->base + TEMP_CFG);  in s5_temp_enable()
39 	u32 clk = clk_get_rate(hwmon->clk) / USEC_PER_SEC;  in s5_temp_enable()
45 	writel(val, hwmon->base + TEMP_CFG);  in s5_temp_enable()
49 		   u32 attr, int channel, long *temp)  in s5_read()  argument
57 		stat = readl_relaxed(hwmon->base + TEMP_STAT);  in s5_read()
59 			return -EAGAIN;  in s5_read()
63 		 * Temp(C) = TEMP_SENSOR_STAT.TEMP / 4096 * 352.2 - 109.4  in s5_read()
65 		value = DIV_ROUND_CLOSEST(value * 3522, 4096) - 1094;  in s5_read()
72 		*temp = value;  in s5_read()
75 		rc = -EOPNOTSUPP;  in s5_read()
98 	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT),
118 	hwmon = devm_kzalloc(&pdev->dev, sizeof(*hwmon), GFP_KERNEL);  in s5_temp_probe()
120 		return -ENOMEM;  in s5_temp_probe()
122 	hwmon->base = devm_platform_ioremap_resource(pdev, 0);  in s5_temp_probe()
123 	if (IS_ERR(hwmon->base))  in s5_temp_probe()
124 		return PTR_ERR(hwmon->base);  in s5_temp_probe()
126 	hwmon->clk = devm_clk_get(&pdev->dev, NULL);  in s5_temp_probe()
127 	if (IS_ERR(hwmon->clk))  in s5_temp_probe()
128 		return PTR_ERR(hwmon->clk);  in s5_temp_probe()
130 	ret = clk_prepare_enable(hwmon->clk);  in s5_temp_probe()
134 	ret = devm_add_action_or_reset(&pdev->dev, s5_temp_clk_disable,  in s5_temp_probe()
135 				       hwmon->clk);  in s5_temp_probe()
141 	hwmon_dev = devm_hwmon_device_register_with_info(&pdev->dev,  in s5_temp_probe()
151 	{ .compatible = "microchip,sparx5-temp" },
159 		.name = "sparx5-temp",
167 MODULE_DESCRIPTION("Sparx5 SoC temperature sensor driver");