1 // SPDX-License-Identifier: GPL-2.0
22 #define TRITSR			0x20	/* TMU immediate temp */
36 #define VER2_TEMP_LOW_LIMIT	-40000
61 static int imx8mm_tmu_get_temp(void *data, int *temp)  in imx8mm_tmu_get_temp()  argument
63 	struct tmu_sensor *sensor = data;  in imx8mm_tmu_get_temp()  local
64 	struct imx8mm_tmu *tmu = sensor->priv;  in imx8mm_tmu_get_temp()
67 	val = readl_relaxed(tmu->base + TRITSR) & TRITSR_TEMP0_VAL_MASK;  in imx8mm_tmu_get_temp()
74 	*temp = val * 1000;  in imx8mm_tmu_get_temp()
75 	if (*temp < VER1_TEMP_LOW_LIMIT || *temp > VER2_TEMP_HIGH_LIMIT)  in imx8mm_tmu_get_temp()
76 		return -EAGAIN;  in imx8mm_tmu_get_temp()
81 static int imx8mp_tmu_get_temp(void *data, int *temp)  in imx8mp_tmu_get_temp()  argument
83 	struct tmu_sensor *sensor = data;  in imx8mp_tmu_get_temp()  local
84 	struct imx8mm_tmu *tmu = sensor->priv;  in imx8mp_tmu_get_temp()
88 	val = readl_relaxed(tmu->base + TRITSR);  in imx8mp_tmu_get_temp()
89 	ready = test_bit(probe_status_offset(sensor->hw_id), &val);  in imx8mp_tmu_get_temp()
91 		return -EAGAIN;  in imx8mp_tmu_get_temp()
93 	val = sensor->hw_id ? FIELD_GET(TRITSR_TEMP1_VAL_MASK, val) :  in imx8mp_tmu_get_temp()
98 	*temp = val * 1000;  in imx8mp_tmu_get_temp()
99 	if (*temp < VER2_TEMP_LOW_LIMIT || *temp > VER2_TEMP_HIGH_LIMIT)  in imx8mp_tmu_get_temp()
100 		return -EAGAIN;  in imx8mp_tmu_get_temp()
105 static int tmu_get_temp(void *data, int *temp)  in tmu_get_temp()  argument
107 	struct tmu_sensor *sensor = data;  in tmu_get_temp()  local
108 	struct imx8mm_tmu *tmu = sensor->priv;  in tmu_get_temp()
110 	return tmu->socdata->get_temp(data, temp);  in tmu_get_temp()
121 	val = readl_relaxed(tmu->base + TER);  in imx8mm_tmu_enable()
123 	if (tmu->socdata->version == TMU_VER2)  in imx8mm_tmu_enable()
125 	writel_relaxed(val, tmu->base + TER);  in imx8mm_tmu_enable()
132 	val = readl_relaxed(tmu->base + TPS);  in imx8mm_tmu_probe_sel_all()
134 	writel_relaxed(val, tmu->base + TPS);  in imx8mm_tmu_probe_sel_all()
144 	data = of_device_get_match_data(&pdev->dev);  in imx8mm_tmu_probe()
146 	tmu = devm_kzalloc(&pdev->dev, struct_size(tmu, sensors,  in imx8mm_tmu_probe()
147 			   data->num_sensors), GFP_KERNEL);  in imx8mm_tmu_probe()
149 		return -ENOMEM;  in imx8mm_tmu_probe()
151 	tmu->socdata = data;  in imx8mm_tmu_probe()
153 	tmu->base = devm_platform_ioremap_resource(pdev, 0);  in imx8mm_tmu_probe()
154 	if (IS_ERR(tmu->base))  in imx8mm_tmu_probe()
155 		return PTR_ERR(tmu->base);  in imx8mm_tmu_probe()
157 	tmu->clk = devm_clk_get(&pdev->dev, NULL);  in imx8mm_tmu_probe()
158 	if (IS_ERR(tmu->clk))  in imx8mm_tmu_probe()
159 		return dev_err_probe(&pdev->dev, PTR_ERR(tmu->clk),  in imx8mm_tmu_probe()
162 	ret = clk_prepare_enable(tmu->clk);  in imx8mm_tmu_probe()
164 		dev_err(&pdev->dev, "failed to enable tmu clock: %d\n", ret);  in imx8mm_tmu_probe()
171 	for (i = 0; i < data->num_sensors; i++) {  in imx8mm_tmu_probe()
172 		tmu->sensors[i].priv = tmu;  in imx8mm_tmu_probe()
173 		tmu->sensors[i].tzd =  in imx8mm_tmu_probe()
174 			devm_thermal_zone_of_sensor_register(&pdev->dev, i,  in imx8mm_tmu_probe()
175 							     &tmu->sensors[i],  in imx8mm_tmu_probe()
177 		if (IS_ERR(tmu->sensors[i].tzd)) {  in imx8mm_tmu_probe()
178 			dev_err(&pdev->dev,  in imx8mm_tmu_probe()
179 				"failed to register thermal zone sensor[%d]: %d\n",  in imx8mm_tmu_probe()
181 			return PTR_ERR(tmu->sensors[i].tzd);  in imx8mm_tmu_probe()
183 		tmu->sensors[i].hw_id = i;  in imx8mm_tmu_probe()
189 	if (tmu->socdata->version == TMU_VER2)  in imx8mm_tmu_probe()
205 	clk_disable_unprepare(tmu->clk);  in imx8mm_tmu_remove()
224 	{ .compatible = "fsl,imx8mm-tmu", .data = &imx8mm_tmu_data, },
225 	{ .compatible = "fsl,imx8mp-tmu", .data = &imx8mp_tmu_data, },