1 // SPDX-License-Identifier: GPL-2.0-only
15 #include <linux/nvmem-consumer.h>
103 /* The total number of temperature sensors in the MT8173 */
106 /* The number of banks in the MT8173 */
109 /* The number of sensing points per bank */
112 /* The number of controller in the MT8173 */
119 #define MT8173_TEMP_MIN		-20000
195 /* The total number of temperature sensors in the MT2701 */
198 /* The number of sensing points per bank */
201 /* The number of controller in the MT2701 */
216 /* The total number of temperature sensors in the MT2712 */
219 /* The number of sensing points per bank */
222 /* The number of controller in the MT2712 */
235 /* The maximum number of banks */
252 /* The total number of temperature sensors in the MT8183 */
255 /* The number of banks in the MT8183 */
258 /* The number of sensing points per bank */
261 /* The number of controller in the MT8183 */
270 /* The total number of temperature sensors in the MT7986 */
273 /* The number of banks in the MT7986 */
276 /* The number of sensing points per bank */
282 /* The number of controller in the MT7986 */
472  * The MT8173 thermal controller has four banks. Each bank can read up to
474  * temperature sensors. We use each bank to measure a certain area of the
479  * the bank concept wouldn't be necessary here. However, the SVS (Smart
480  * Voltage Scaling) unit makes its decisions based on the same bank
515  * The MT2701 thermal controller has one bank, which can read up to
519  * The thermal core only gets the maximum temperature of this one bank,
520  * so the bank concept wouldn't be necessary here. However, the SVS (Smart
521  * Voltage Scaling) unit makes its decisions based on the same bank
546  * The MT8365 thermal controller has one bank, which can read up to
550  * The thermal core only gets the maximum temperature of this one bank,
551  * so the bank concept wouldn't be necessary here. However, the SVS (Smart
552  * Voltage Scaling) unit makes its decisions based on the same bank
580  * The MT2712 thermal controller has one bank, which can read up to
584  * The thermal core only gets the maximum temperature of this one bank,
585  * so the bank concept wouldn't be necessary here. However, the SVS (Smart
586  * Voltage Scaling) unit makes its decisions based on the same bank
639  * The MT8183 thermal controller has one bank for the current SW framework.
644  * the bank concept wouldn't be necessary here. However, the SVS (Smart
645  * Voltage Scaling) unit makes its decisions based on the same bank
701  * raw_to_mcelsius_v1 - convert a raw ADC value to mcelsius
703  * @sensno:	sensor number
716 	tmp /= mt->conf->cali_val + mt->o_slope;  in raw_to_mcelsius_v1()
717 	tmp /= 10000 + mt->adc_ge;  in raw_to_mcelsius_v1()
718 	tmp *= raw - mt->vts[sensno] - 3350;  in raw_to_mcelsius_v1()
721 	return mt->degc_cali * 500 - tmp;  in raw_to_mcelsius_v1()
737 	g_gain = 10000 + (((mt->adc_ge - 512) * 10000) >> 12);  in raw_to_mcelsius_v2()
738 	g_oe = mt->adc_oe - 512;  in raw_to_mcelsius_v2()
739 	format_1 = mt->vts[VTS2] + 3105 - g_oe;  in raw_to_mcelsius_v2()
740 	format_2 = (mt->degc_cali * 10) >> 1;  in raw_to_mcelsius_v2()
743 	tmp = (((((raw - g_oe) * 10000) >> 12) * 10000) / g_gain) - g_x_roomt;  in raw_to_mcelsius_v2()
746 	if (mt->o_slope_sign == 0)  in raw_to_mcelsius_v2()
747 		tmp = tmp / (165 - mt->o_slope);  in raw_to_mcelsius_v2()
749 		tmp = tmp / (165 + mt->o_slope);  in raw_to_mcelsius_v2()
751 	return (format_2 - tmp) * 100;  in raw_to_mcelsius_v2()
763 	tmp /= 4096 - 512 + mt->adc_ge;  in raw_to_mcelsius_v3()
765 	tmp *= raw - mt->vts[sensno] - 2900;  in raw_to_mcelsius_v3()
767 	return mt->degc_cali * 500 - tmp;  in raw_to_mcelsius_v3()
771  * mtk_thermal_get_bank - get bank
772  * @bank:	The bank
774  * The bank registers are banked, we have to select a bank in the
777 static void mtk_thermal_get_bank(struct mtk_thermal_bank *bank)  in mtk_thermal_get_bank()  argument
779 	struct mtk_thermal *mt = bank->mt;  in mtk_thermal_get_bank()
782 	if (mt->conf->need_switch_bank) {  in mtk_thermal_get_bank()
783 		mutex_lock(&mt->lock);  in mtk_thermal_get_bank()
785 		val = readl(mt->thermal_base + PTPCORESEL);  in mtk_thermal_get_bank()
787 		val |= bank->id;  in mtk_thermal_get_bank()
788 		writel(val, mt->thermal_base + PTPCORESEL);  in mtk_thermal_get_bank()
793  * mtk_thermal_put_bank - release bank
794  * @bank:	The bank
796  * release a bank previously taken with mtk_thermal_get_bank,
798 static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank)  in mtk_thermal_put_bank()  argument
800 	struct mtk_thermal *mt = bank->mt;  in mtk_thermal_put_bank()
802 	if (mt->conf->need_switch_bank)  in mtk_thermal_put_bank()
803 		mutex_unlock(&mt->lock);  in mtk_thermal_put_bank()
807  * mtk_thermal_bank_temperature - get the temperature of a bank
808  * @bank:	The bank
810  * The temperature of a bank is considered the maximum temperature of
811  * the sensors associated to the bank.
813 static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)  in mtk_thermal_bank_temperature()  argument
815 	struct mtk_thermal *mt = bank->mt;  in mtk_thermal_bank_temperature()
816 	const struct mtk_thermal_data *conf = mt->conf;  in mtk_thermal_bank_temperature()
820 	for (i = 0; i < conf->bank_data[bank->id].num_sensors; i++) {  in mtk_thermal_bank_temperature()
821 		raw = readl(mt->thermal_base + conf->msr[i]);  in mtk_thermal_bank_temperature()
823 		temp = mt->raw_to_mcelsius(  in mtk_thermal_bank_temperature()
824 			mt, conf->bank_data[bank->id].sensors[i], raw);  in mtk_thermal_bank_temperature()
851 	for (i = 0; i < mt->conf->num_banks; i++) {  in mtk_read_temp()
852 		struct mtk_thermal_bank *bank = &mt->banks[i];  in mtk_read_temp()  local
854 		mtk_thermal_get_bank(bank);  in mtk_read_temp()
856 		tempmax = max(tempmax, mtk_thermal_bank_temperature(bank));  in mtk_read_temp()
858 		mtk_thermal_put_bank(bank);  in mtk_read_temp()
874 	struct mtk_thermal_bank *bank = &mt->banks[num];  in mtk_thermal_init_bank()  local
875 	const struct mtk_thermal_data *conf = mt->conf;  in mtk_thermal_init_bank()
878 	int offset = mt->conf->controller_offset[ctrl_id];  in mtk_thermal_init_bank()
879 	void __iomem *controller_base = mt->thermal_base + offset;  in mtk_thermal_init_bank()
881 	bank->id = num;  in mtk_thermal_init_bank()
882 	bank->mt = mt;  in mtk_thermal_init_bank()
884 	mtk_thermal_get_bank(bank);  in mtk_thermal_init_bank()
907 	/* number of interrupts per event, 1 is enough */  in mtk_thermal_init_bank()
924 	writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCMUX);  in mtk_thermal_init_bank()
930 	if (mt->conf->version == MTK_THERMAL_V1) {  in mtk_thermal_init_bank()
937 	writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCEN);  in mtk_thermal_init_bank()
944 	writel(auxadc_phys_base + AUXADC_DATA(conf->auxadc_channel),  in mtk_thermal_init_bank()
948 	writel(auxadc_phys_base + AUXADC_DATA(conf->auxadc_channel),  in mtk_thermal_init_bank()
965 	for (i = 0; i < conf->bank_data[num].num_sensors; i++)  in mtk_thermal_init_bank()
966 		writel(conf->sensor_mux_values[conf->bank_data[num].sensors[i]],  in mtk_thermal_init_bank()
967 		       mt->thermal_base + conf->adcpnp[i]);  in mtk_thermal_init_bank()
969 	writel((1 << conf->bank_data[num].num_sensors) - 1,  in mtk_thermal_init_bank()
976 	mtk_thermal_put_bank(bank);  in mtk_thermal_init_bank()
994 		return -EINVAL;  in mtk_thermal_extract_efuse_v1()
996 	mt->adc_ge = CALIB_BUF1_ADC_GE_V1(buf[1]);  in mtk_thermal_extract_efuse_v1()
998 	for (i = 0; i < mt->conf->num_sensors; i++) {  in mtk_thermal_extract_efuse_v1()
999 		switch (mt->conf->vts_index[i]) {  in mtk_thermal_extract_efuse_v1()
1001 			mt->vts[VTS1] = CALIB_BUF0_VTS_TS1_V1(buf[0]);  in mtk_thermal_extract_efuse_v1()
1004 			mt->vts[VTS2] = CALIB_BUF0_VTS_TS2_V1(buf[0]);  in mtk_thermal_extract_efuse_v1()
1007 			mt->vts[VTS3] = CALIB_BUF1_VTS_TS3_V1(buf[1]);  in mtk_thermal_extract_efuse_v1()
1010 			mt->vts[VTS4] = CALIB_BUF2_VTS_TS4_V1(buf[2]);  in mtk_thermal_extract_efuse_v1()
1013 			mt->vts[VTS5] = CALIB_BUF2_VTS_TS5_V1(buf[2]);  in mtk_thermal_extract_efuse_v1()
1016 			mt->vts[VTSABB] =  in mtk_thermal_extract_efuse_v1()
1024 	mt->degc_cali = CALIB_BUF0_DEGC_CALI_V1(buf[0]);  in mtk_thermal_extract_efuse_v1()
1027 		mt->o_slope = -CALIB_BUF0_O_SLOPE_V1(buf[0]);  in mtk_thermal_extract_efuse_v1()
1029 		mt->o_slope = CALIB_BUF0_O_SLOPE_V1(buf[0]);  in mtk_thermal_extract_efuse_v1()
1037 		return -EINVAL;  in mtk_thermal_extract_efuse_v2()
1039 	mt->adc_oe = CALIB_BUF0_ADC_OE_V2(buf[0]);  in mtk_thermal_extract_efuse_v2()
1040 	mt->adc_ge = CALIB_BUF0_ADC_GE_V2(buf[0]);  in mtk_thermal_extract_efuse_v2()
1041 	mt->degc_cali = CALIB_BUF0_DEGC_CALI_V2(buf[0]);  in mtk_thermal_extract_efuse_v2()
1042 	mt->o_slope = CALIB_BUF0_O_SLOPE_V2(buf[0]);  in mtk_thermal_extract_efuse_v2()
1043 	mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V2(buf[1]);  in mtk_thermal_extract_efuse_v2()
1044 	mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V2(buf[1]);  in mtk_thermal_extract_efuse_v2()
1045 	mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V2(buf[1]);  in mtk_thermal_extract_efuse_v2()
1046 	mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V2(buf[1]);  in mtk_thermal_extract_efuse_v2()
1054 		return -EINVAL;  in mtk_thermal_extract_efuse_v3()
1056 	mt->adc_ge = CALIB_BUF0_ADC_GE_V3(buf[0]);  in mtk_thermal_extract_efuse_v3()
1057 	mt->degc_cali = CALIB_BUF0_DEGC_CALI_V3(buf[0]);  in mtk_thermal_extract_efuse_v3()
1058 	mt->o_slope = CALIB_BUF0_O_SLOPE_V3(buf[0]);  in mtk_thermal_extract_efuse_v3()
1059 	mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V3(buf[1]);  in mtk_thermal_extract_efuse_v3()
1060 	mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V3(buf[1]);  in mtk_thermal_extract_efuse_v3()
1061 	mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V3(buf[1]);  in mtk_thermal_extract_efuse_v3()
1062 	mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V3(buf[1]);  in mtk_thermal_extract_efuse_v3()
1065 		mt->o_slope = 0;  in mtk_thermal_extract_efuse_v3()
1079 	mt->adc_ge = 512;  in mtk_thermal_get_calibration_data()
1080 	mt->adc_oe = 512;  in mtk_thermal_get_calibration_data()
1081 	for (i = 0; i < mt->conf->num_sensors; i++)  in mtk_thermal_get_calibration_data()
1082 		mt->vts[i] = 260;  in mtk_thermal_get_calibration_data()
1083 	mt->degc_cali = 40;  in mtk_thermal_get_calibration_data()
1084 	mt->o_slope = 0;  in mtk_thermal_get_calibration_data()
1086 	cell = nvmem_cell_get(dev, "calibration-data");  in mtk_thermal_get_calibration_data()
1088 		if (PTR_ERR(cell) == -EPROBE_DEFER)  in mtk_thermal_get_calibration_data()
1102 		ret = -EINVAL;  in mtk_thermal_get_calibration_data()
1106 	switch (mt->conf->version) {  in mtk_thermal_get_calibration_data()
1117 		ret = -EINVAL;  in mtk_thermal_get_calibration_data()
1134 		.compatible = "mediatek,mt8173-thermal",
1138 		.compatible = "mediatek,mt2701-thermal",
1142 		.compatible = "mediatek,mt2712-thermal",
1146 		.compatible = "mediatek,mt7622-thermal",
1150 		.compatible = "mediatek,mt7986-thermal",
1154 		.compatible = "mediatek,mt8183-thermal",
1158 		.compatible = "mediatek,mt8365-thermal",
1170 	if (!mt->conf->apmixed_buffer_ctl_reg)  in mtk_thermal_turn_on_buffer()
1173 	tmp = readl(apmixed_base + mt->conf->apmixed_buffer_ctl_reg);  in mtk_thermal_turn_on_buffer()
1174 	tmp &= mt->conf->apmixed_buffer_ctl_mask;  in mtk_thermal_turn_on_buffer()
1175 	tmp |= mt->conf->apmixed_buffer_ctl_set;  in mtk_thermal_turn_on_buffer()
1176 	writel(tmp, apmixed_base + mt->conf->apmixed_buffer_ctl_reg);  in mtk_thermal_turn_on_buffer()
1186 	writel(0x1, mt->thermal_base + TEMP_MONCTL0);  in mtk_thermal_release_periodic_ts()
1187 	tmp = readl(mt->thermal_base + TEMP_MSRCTL1);  in mtk_thermal_release_periodic_ts()
1188 	writel((tmp & (~0x10e)), mt->thermal_base + TEMP_MSRCTL1);  in mtk_thermal_release_periodic_ts()
1194 	struct device_node *auxadc, *apmixedsys, *np = pdev->dev.of_node;  in mtk_thermal_probe()
1200 	mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);  in mtk_thermal_probe()
1202 		return -ENOMEM;  in mtk_thermal_probe()
1204 	mt->conf = of_device_get_match_data(&pdev->dev);  in mtk_thermal_probe()
1206 	mt->thermal_base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);  in mtk_thermal_probe()
1207 	if (IS_ERR(mt->thermal_base))  in mtk_thermal_probe()
1208 		return PTR_ERR(mt->thermal_base);  in mtk_thermal_probe()
1210 	ret = mtk_thermal_get_calibration_data(&pdev->dev, mt);  in mtk_thermal_probe()
1214 	mutex_init(&mt->lock);  in mtk_thermal_probe()
1216 	mt->dev = &pdev->dev;  in mtk_thermal_probe()
1220 		dev_err(&pdev->dev, "missing auxadc node\n");  in mtk_thermal_probe()
1221 		return -ENODEV;  in mtk_thermal_probe()
1230 		dev_err(&pdev->dev, "Can't get auxadc phys address\n");  in mtk_thermal_probe()
1231 		return -EINVAL;  in mtk_thermal_probe()
1236 		dev_err(&pdev->dev, "missing apmixedsys node\n");  in mtk_thermal_probe()
1237 		return -ENODEV;  in mtk_thermal_probe()
1246 		dev_err(&pdev->dev, "Can't get auxadc phys address\n");  in mtk_thermal_probe()
1247 		return -EINVAL;  in mtk_thermal_probe()
1250 	ret = device_reset_optional(&pdev->dev);  in mtk_thermal_probe()
1254 	mt->clk_auxadc = devm_clk_get_enabled(&pdev->dev, "auxadc");  in mtk_thermal_probe()
1255 	if (IS_ERR(mt->clk_auxadc)) {  in mtk_thermal_probe()
1256 		ret = PTR_ERR(mt->clk_auxadc);  in mtk_thermal_probe()
1257 		dev_err(&pdev->dev, "Can't enable auxadc clk: %d\n", ret);  in mtk_thermal_probe()
1261 	mt->clk_peri_therm = devm_clk_get_enabled(&pdev->dev, "therm");  in mtk_thermal_probe()
1262 	if (IS_ERR(mt->clk_peri_therm)) {  in mtk_thermal_probe()
1263 		ret = PTR_ERR(mt->clk_peri_therm);  in mtk_thermal_probe()
1264 		dev_err(&pdev->dev, "Can't enable peri clk: %d\n", ret);  in mtk_thermal_probe()
1270 	if (mt->conf->version != MTK_THERMAL_V1)  in mtk_thermal_probe()
1273 	if (mt->conf->version == MTK_THERMAL_V1)  in mtk_thermal_probe()
1274 		mt->raw_to_mcelsius = raw_to_mcelsius_v1;  in mtk_thermal_probe()
1275 	else if (mt->conf->version == MTK_THERMAL_V2)  in mtk_thermal_probe()
1276 		mt->raw_to_mcelsius = raw_to_mcelsius_v2;  in mtk_thermal_probe()
1278 		mt->raw_to_mcelsius = raw_to_mcelsius_v3;  in mtk_thermal_probe()
1280 	for (ctrl_id = 0; ctrl_id < mt->conf->num_controller ; ctrl_id++)  in mtk_thermal_probe()
1281 		for (i = 0; i < mt->conf->num_banks; i++)  in mtk_thermal_probe()
1285 	tzdev = devm_thermal_of_zone_register(&pdev->dev, 0, mt,  in mtk_thermal_probe()
1290 	ret = devm_thermal_add_hwmon_sysfs(&pdev->dev, tzdev);  in mtk_thermal_probe()
1292 		dev_warn(&pdev->dev, "error in thermal_add_hwmon_sysfs");  in mtk_thermal_probe()
1300 		.name = "mtk-thermal",