3 // max8997.c - Regulator driver for the Maxim 8997/8966
19 #include <linux/mfd/max8997.h>
20 #include <linux/mfd/max8997-private.h>
49 static inline void max8997_set_gpio(struct max8997_data *max8997)  in max8997_set_gpio()  argument
51 	int set3 = (max8997->buck125_gpioindex) & 0x1;  in max8997_set_gpio()
52 	int set2 = ((max8997->buck125_gpioindex) >> 1) & 0x1;  in max8997_set_gpio()
53 	int set1 = ((max8997->buck125_gpioindex) >> 2) & 0x1;  in max8997_set_gpio()
55 	gpiod_set_value(max8997->buck125_gpiods[0], set1);  in max8997_set_gpio()
56 	gpiod_set_value(max8997->buck125_gpiods[1], set2);  in max8997_set_gpio()
57 	gpiod_set_value(max8997->buck125_gpiods[2], set3);  in max8997_set_gpio()
244 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_reg_is_enabled()  local
245 	struct i2c_client *i2c = max8997->iodev->i2c;  in max8997_reg_is_enabled()
262 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_reg_enable()  local
263 	struct i2c_client *i2c = max8997->iodev->i2c;  in max8997_reg_enable()
275 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_reg_disable()  local
276 	struct i2c_client *i2c = max8997->iodev->i2c;  in max8997_reg_disable()
289 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_get_voltage_register()  local
299 		if (max8997->buck1_gpiodvs)  in max8997_get_voltage_register()
300 			reg += max8997->buck125_gpioindex;  in max8997_get_voltage_register()
304 		if (max8997->buck2_gpiodvs)  in max8997_get_voltage_register()
305 			reg += max8997->buck125_gpioindex;  in max8997_get_voltage_register()
315 		if (max8997->buck5_gpiodvs)  in max8997_get_voltage_register()
316 			reg += max8997->buck125_gpioindex;  in max8997_get_voltage_register()
354 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_get_voltage_sel()  local
355 	struct i2c_client *i2c = max8997->iodev->i2c;  in max8997_get_voltage_sel()
399 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_set_voltage_charger_cv()  local
400 	struct i2c_client *i2c = max8997->iodev->i2c;  in max8997_set_voltage_charger_cv()
451 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_set_voltage_ldobuck()  local
452 	struct i2c_client *i2c = max8997->iodev->i2c;  in max8997_set_voltage_ldobuck()
494 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_set_voltage_buck_time_sel()  local
505 		if (max8997->buck1_gpiodvs)  in max8997_set_voltage_buck_time_sel()
509 		if (max8997->buck2_gpiodvs)  in max8997_set_voltage_buck_time_sel()
513 		if (max8997->buck5_gpiodvs)  in max8997_set_voltage_buck_time_sel()
524 				    max8997->ramp_delay * 1000);  in max8997_set_voltage_buck_time_sel()
541 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_assess_side_effect()  local
565 	buckx_val[0] = max8997->buck1_vol;  in max8997_assess_side_effect()
566 	buckx_val[1] = max8997->buck2_vol;  in max8997_assess_side_effect()
567 	buckx_val[2] = max8997->buck5_vol;  in max8997_assess_side_effect()
568 	buckx_gpiodvs[0] = max8997->buck1_gpiodvs;  in max8997_assess_side_effect()
569 	buckx_gpiodvs[1] = max8997->buck2_gpiodvs;  in max8997_assess_side_effect()
570 	buckx_gpiodvs[2] = max8997->buck5_gpiodvs;  in max8997_assess_side_effect()
589 				(buckx_val[others])[max8997->buck125_gpioindex];  in max8997_assess_side_effect()
618 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_set_voltage_buck()  local
629 		if (max8997->buck1_gpiodvs)  in max8997_set_voltage_buck()
633 		if (max8997->buck2_gpiodvs)  in max8997_set_voltage_buck()
637 		if (max8997->buck5_gpiodvs)  in max8997_set_voltage_buck()
671 	if (max8997->ignore_gpiodvs_side_effect == false)  in max8997_set_voltage_buck()
675 		"MAX8997 GPIO-DVS Side Effect Warning: GPIO SET:  %d -> %d\n",  in max8997_set_voltage_buck()
676 		max8997->buck125_gpioindex, tmp_idx);  in max8997_set_voltage_buck()
682 	max8997->buck125_gpioindex = new_idx;  in max8997_set_voltage_buck()
683 	max8997_set_gpio(max8997);  in max8997_set_voltage_buck()
693 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_set_voltage_safeout_sel()  local
694 	struct i2c_client *i2c = max8997->iodev->i2c;  in max8997_set_voltage_safeout_sel()
710 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);  in max8997_reg_disable_suspend()  local
711 	struct i2c_client *i2c = max8997->iodev->i2c;  in max8997_reg_disable_suspend()
719 	max8997_read_reg(i2c, reg, &max8997->saved_states[rid]);  in max8997_reg_disable_suspend()
730 			rdev->desc->name, max8997->saved_states[rid] & mask,  in max8997_reg_disable_suspend()
926 	pdata->buck1_gpiodvs = of_property_read_bool(pmic_np, "max8997,pmic-buck1-uses-gpio-dvs");  in max8997_pmic_dt_parse_pdata()
927 	pdata->buck2_gpiodvs = of_property_read_bool(pmic_np, "max8997,pmic-buck2-uses-gpio-dvs");  in max8997_pmic_dt_parse_pdata()
928 	pdata->buck5_gpiodvs = of_property_read_bool(pmic_np, "max8997,pmic-buck5-uses-gpio-dvs");  in max8997_pmic_dt_parse_pdata()
933 				"max8997,pmic-buck125-default-dvs-idx",  in max8997_pmic_dt_parse_pdata()
944 			"max8997,pmic-ignore-gpiodvs-side-effect");  in max8997_pmic_dt_parse_pdata()
950 				"max8997,pmic-buck1-dvs-voltage",  in max8997_pmic_dt_parse_pdata()
957 				"max8997,pmic-buck2-dvs-voltage",  in max8997_pmic_dt_parse_pdata()
964 				"max8997,pmic-buck5-dvs-voltage",  in max8997_pmic_dt_parse_pdata()
986 	struct max8997_data *max8997;  in max8997_pmic_probe()  local
1002 	max8997 = devm_kzalloc(&pdev->dev, sizeof(struct max8997_data),  in max8997_pmic_probe()
1004 	if (!max8997)  in max8997_pmic_probe()
1007 	max8997->dev = &pdev->dev;  in max8997_pmic_probe()
1008 	max8997->iodev = iodev;  in max8997_pmic_probe()
1009 	max8997->num_regulators = pdata->num_regulators;  in max8997_pmic_probe()
1010 	platform_set_drvdata(pdev, max8997);  in max8997_pmic_probe()
1011 	i2c = max8997->iodev->i2c;  in max8997_pmic_probe()
1013 	max8997->buck125_gpioindex = pdata->buck125_default_idx;  in max8997_pmic_probe()
1014 	max8997->buck1_gpiodvs = pdata->buck1_gpiodvs;  in max8997_pmic_probe()
1015 	max8997->buck2_gpiodvs = pdata->buck2_gpiodvs;  in max8997_pmic_probe()
1016 	max8997->buck5_gpiodvs = pdata->buck5_gpiodvs;  in max8997_pmic_probe()
1017 	max8997->ignore_gpiodvs_side_effect = pdata->ignore_gpiodvs_side_effect;  in max8997_pmic_probe()
1023 		max8997->buck1_vol[i] = ret =  in max8997_pmic_probe()
1032 		max8997->buck2_vol[i] = ret =  in max8997_pmic_probe()
1041 		max8997->buck5_vol[i] = ret =  in max8997_pmic_probe()
1050 		if (max_buck1 < max8997->buck1_vol[i])  in max8997_pmic_probe()
1051 			max_buck1 = max8997->buck1_vol[i];  in max8997_pmic_probe()
1052 		if (max_buck2 < max8997->buck2_vol[i])  in max8997_pmic_probe()
1053 			max_buck2 = max8997->buck2_vol[i];  in max8997_pmic_probe()
1054 		if (max_buck5 < max8997->buck5_vol[i])  in max8997_pmic_probe()
1055 			max_buck5 = max8997->buck5_vol[i];  in max8997_pmic_probe()
1071 				max8997->buck1_vol[i],  in max8997_pmic_probe()
1074 				max8997->buck2_vol[i],  in max8997_pmic_probe()
1077 				max8997->buck5_vol[i],  in max8997_pmic_probe()
1087 		const char *gpio_names[3] = {"MAX8997 SET1", "MAX8997 SET2", "MAX8997 SET3"};  in max8997_pmic_probe()
1092 			if (max8997->buck125_gpioindex & BIT(2 - i))  in max8997_pmic_probe()
1097 			max8997->buck125_gpiods[i] = devm_gpiod_get_index(iodev->dev,  in max8997_pmic_probe()
1098 									  "max8997,pmic-buck125-dvs",  in max8997_pmic_probe()
1101 			if (IS_ERR(max8997->buck125_gpiods[i])) {  in max8997_pmic_probe()
1102 				ret = PTR_ERR(max8997->buck125_gpiods[i]);  in max8997_pmic_probe()
1106 			gpiod_set_consumer_name(max8997->buck125_gpiods[i], gpio_names[i]);  in max8997_pmic_probe()
1119 	max8997->ramp_delay = 10; /* set 10mV/us, which is the default */  in max8997_pmic_probe()
1137 		config.dev = max8997->dev;  in max8997_pmic_probe()
1139 		config.driver_data = max8997;  in max8997_pmic_probe()
1145 			dev_err(max8997->dev, "regulator init failed for %d\n",  in max8997_pmic_probe()
1155 	{ "max8997-pmic", 0},
1162 		.name = "max8997-pmic",