1 // SPDX-License-Identifier: GPL-2.0
3  * Renesas RZ/G2L TSU Thermal Sensor Driver
67 	return ioread32(priv->base + reg);  in rzg2l_thermal_read()
73 	iowrite32(data, priv->base + reg);  in rzg2l_thermal_write()
84 		 * TSU repeats measurement at 20 microseconds intervals and  in rzg2l_thermal_get_temp()
109 	val = ((dsensor - priv->calib1) * (MCELSIUS(165) /  in rzg2l_thermal_get_temp()
110 		(priv->calib0 - priv->calib1))) - MCELSIUS(40);  in rzg2l_thermal_get_temp()
129 	 * Before setting the START bit, TSU should be in normal operating  in rzg2l_thermal_init()
130 	 * mode. As per the HW manual, it will take 60 µs to place the TSU  in rzg2l_thermal_init()
139 	return readl_poll_timeout(priv->base + TSU_SS, reg_val,  in rzg2l_thermal_init()
146 	struct rzg2l_thermal_priv *priv = dev_get_drvdata(&pdev->dev);  in rzg2l_thermal_reset_assert_pm_disable_put()
148 	pm_runtime_put(&pdev->dev);  in rzg2l_thermal_reset_assert_pm_disable_put()
149 	pm_runtime_disable(&pdev->dev);  in rzg2l_thermal_reset_assert_pm_disable_put()
150 	reset_control_assert(priv->rstc);  in rzg2l_thermal_reset_assert_pm_disable_put()
155 	struct rzg2l_thermal_priv *priv = dev_get_drvdata(&pdev->dev);  in rzg2l_thermal_remove()
157 	thermal_remove_hwmon_sysfs(priv->zone);  in rzg2l_thermal_remove()
165 	struct device *dev = &pdev->dev;  in rzg2l_thermal_probe()
170 		return -ENOMEM;  in rzg2l_thermal_probe()
172 	priv->base = devm_platform_ioremap_resource(pdev, 0);  in rzg2l_thermal_probe()
173 	if (IS_ERR(priv->base))  in rzg2l_thermal_probe()
174 		return PTR_ERR(priv->base);  in rzg2l_thermal_probe()
176 	priv->dev = dev;  in rzg2l_thermal_probe()
177 	priv->rstc = devm_reset_control_get_exclusive(dev, NULL);  in rzg2l_thermal_probe()
178 	if (IS_ERR(priv->rstc))  in rzg2l_thermal_probe()
179 		return dev_err_probe(dev, PTR_ERR(priv->rstc),  in rzg2l_thermal_probe()
182 	ret = reset_control_deassert(priv->rstc);  in rzg2l_thermal_probe()
189 	priv->calib0 = rzg2l_thermal_read(priv, OTPTSUTRIM_REG(0));  in rzg2l_thermal_probe()
190 	if (priv->calib0 & OTPTSUTRIM_EN_MASK)  in rzg2l_thermal_probe()
191 		priv->calib0 &= OTPTSUTRIM_MASK;  in rzg2l_thermal_probe()
193 		priv->calib0 = SW_CALIB0_VAL;  in rzg2l_thermal_probe()
195 	priv->calib1 = rzg2l_thermal_read(priv, OTPTSUTRIM_REG(1));  in rzg2l_thermal_probe()
196 	if (priv->calib1 & OTPTSUTRIM_EN_MASK)  in rzg2l_thermal_probe()
197 		priv->calib1 &= OTPTSUTRIM_MASK;  in rzg2l_thermal_probe()
199 		priv->calib1 = SW_CALIB1_VAL;  in rzg2l_thermal_probe()
204 		dev_err(dev, "Failed to start TSU");  in rzg2l_thermal_probe()
216 	priv->zone = zone;  in rzg2l_thermal_probe()
217 	ret = thermal_add_hwmon_sysfs(priv->zone);  in rzg2l_thermal_probe()
221 	dev_dbg(dev, "TSU probed with %s calibration values",  in rzg2l_thermal_probe()
232 	{ .compatible = "renesas,rzg2l-tsu", },
247 MODULE_DESCRIPTION("Renesas RZ/G2L TSU Thermal Sensor Driver");