drivers/thermal/loongson2_thermal.c

1 // SPDX-License-Identifier: GPL-2.0+
3  * Author: zhanghongchen <zhanghongchen@loongson.cn>
4  *         Yinbo Zhu <zhuyinbo@loongson.cn>
5  * Copyright (C) 2022-2023 Loongson Technology Corporation Limited
28 #define LOONGSON2_THSENS_INT_HIGH	BIT(1)
35  * method of the Loongson-2K2000
54 	int reg_off  = data->chip_data->thermal_sensor_sel * 2;  in loongson2_set_ctrl_regs()
59 	writew(reg_ctrl, data->ctrl_reg + ctrl_reg + reg_off);  in loongson2_set_ctrl_regs()
66 	loongson2_set_ctrl_regs(data, clamp(-40, low, high), true, enable);  in loongson2_thermal_set()
79 	val = readl(data->ctrl_reg + LOONGSON2_THSENS_OUT_REG);  in loongson2_2k1000_get_temp()
80 	*temp = ((val & LOONGSON2_THSENS_OUT_MASK) - HECTO) * KILO;  in loongson2_2k1000_get_temp()
90 	val = readl(data->temp_reg);  in loongson2_2k2000_get_temp()
91 	*temp = ((val & 0xffff) * 820 / 0x4000 - 311) * KILO;  in loongson2_2k2000_get_temp()
101 	writeb(LOONGSON2_THSENS_INT_EN, data->ctrl_reg + LOONGSON2_THSENS_STATUS_REG);  in loongson2_thermal_irq_thread()
122 	struct device *dev = &pdev->dev;  in loongson2_thermal_probe()
129 		return -ENOMEM;  in loongson2_thermal_probe()
131 	data->chip_data = device_get_match_data(dev);  in loongson2_thermal_probe()
133 	data->ctrl_reg = devm_platform_ioremap_resource(pdev, 0);  in loongson2_thermal_probe()
134 	if (IS_ERR(data->ctrl_reg))  in loongson2_thermal_probe()
135 		return PTR_ERR(data->ctrl_reg);  in loongson2_thermal_probe()
137 	/* The temperature output register is separate for Loongson-2K2000 */  in loongson2_thermal_probe()
138 	if (data->chip_data->flags & LS2K2000_THSENS_OUT_FLAG) {  in loongson2_thermal_probe()
139 		data->temp_reg = devm_platform_ioremap_resource(pdev, 1);  in loongson2_thermal_probe()
140 		if (IS_ERR(data->temp_reg))  in loongson2_thermal_probe()
141 			return PTR_ERR(data->temp_reg);  in loongson2_thermal_probe()
150 	writeb(LOONGSON2_THSENS_INT_EN, data->ctrl_reg + LOONGSON2_THSENS_STATUS_REG);  in loongson2_thermal_probe()
161 		if (PTR_ERR(tzd) != -ENODEV)  in loongson2_thermal_probe()
189 		.compatible = "loongson,ls2k1000-thermal",
193 		.compatible = "loongson,ls2k2000-thermal",
210 MODULE_AUTHOR("Loongson Technology Corporation Limited");