| // SPDX-License-Identifier: GPL-2.0+ |
| // |
| // max77802.c - Regulator driver for the Maxim 77802 |
| // |
| // Copyright (C) 2013-2014 Google, Inc |
| // Simon Glass <sjg@chromium.org> |
| // |
| // Copyright (C) 2012 Samsung Electronics |
| // Chiwoong Byun <woong.byun@samsung.com> |
| // Jonghwa Lee <jonghwa3.lee@samsung.com> |
| // |
| // This driver is based on max8997.c |
| |
| #include <linux/kernel.h> |
| #include <linux/bug.h> |
| #include <linux/err.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/mfd/max77686.h> |
| #include <linux/mfd/max77686-private.h> |
| #include <dt-bindings/regulator/maxim,max77802.h> |
| |
| /* Default ramp delay in case it is not manually set */ |
| #define MAX77802_RAMP_DELAY 100000 /* uV/us */ |
| |
| #define MAX77802_OPMODE_SHIFT_LDO 6 |
| #define MAX77802_OPMODE_BUCK234_SHIFT 4 |
| #define MAX77802_OPMODE_MASK 0x3 |
| |
| #define MAX77802_VSEL_MASK 0x3F |
| #define MAX77802_DVS_VSEL_MASK 0xFF |
| |
| #define MAX77802_RAMP_RATE_MASK_2BIT 0xC0 |
| #define MAX77802_RAMP_RATE_SHIFT_2BIT 6 |
| #define MAX77802_RAMP_RATE_MASK_4BIT 0xF0 |
| #define MAX77802_RAMP_RATE_SHIFT_4BIT 4 |
| |
| #define MAX77802_STATUS_OFF 0x0 |
| #define MAX77802_OFF_PWRREQ 0x1 |
| #define MAX77802_LP_PWRREQ 0x2 |
| |
| /* MAX77802 has two register formats: 2-bit and 4-bit */ |
| static const unsigned int ramp_table_77802_2bit[] = { |
| 12500, |
| 25000, |
| 50000, |
| 100000, |
| }; |
| |
| static unsigned int ramp_table_77802_4bit[] = { |
| 1000, 2000, 3030, 4000, |
| 5000, 5880, 7140, 8330, |
| 9090, 10000, 11110, 12500, |
| 16670, 25000, 50000, 100000, |
| }; |
| |
| struct max77802_regulator_prv { |
| /* Array indexed by regulator id */ |
| unsigned int opmode[MAX77802_REG_MAX]; |
| }; |
| |
| static inline unsigned int max77802_map_mode(unsigned int mode) |
| { |
| return mode == MAX77802_OPMODE_NORMAL ? |
| REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY; |
| } |
| |
| static int max77802_get_opmode_shift(int id) |
| { |
| if (id == MAX77802_BUCK1 || (id >= MAX77802_BUCK5 && |
| id <= MAX77802_BUCK10)) |
| return 0; |
| |
| if (id >= MAX77802_BUCK2 && id <= MAX77802_BUCK4) |
| return MAX77802_OPMODE_BUCK234_SHIFT; |
| |
| if (id >= MAX77802_LDO1 && id <= MAX77802_LDO35) |
| return MAX77802_OPMODE_SHIFT_LDO; |
| |
| return -EINVAL; |
| } |
| |
| /** |
| * max77802_set_suspend_disable - Disable the regulator during system suspend |
| * @rdev: regulator to mark as disabled |
| * |
| * All regulators expect LDO 1, 3, 20 and 21 support OFF by PWRREQ. |
| * Configure the regulator so the PMIC will turn it OFF during system suspend. |
| */ |
| static int max77802_set_suspend_disable(struct regulator_dev *rdev) |
| { |
| unsigned int val = MAX77802_OFF_PWRREQ; |
| struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
| unsigned int id = rdev_get_id(rdev); |
| int shift = max77802_get_opmode_shift(id); |
| |
| if (WARN_ON_ONCE(id >= ARRAY_SIZE(max77802->opmode))) |
| return -EINVAL; |
| max77802->opmode[id] = val; |
| return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
| rdev->desc->enable_mask, val << shift); |
| } |
| |
| /* |
| * Some LDOs support Low Power Mode while the system is running. |
| * |
| * LDOs 1, 3, 20, 21. |
| */ |
| static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode) |
| { |
| struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
| unsigned int id = rdev_get_id(rdev); |
| unsigned int val; |
| int shift = max77802_get_opmode_shift(id); |
| |
| switch (mode) { |
| case REGULATOR_MODE_STANDBY: |
| val = MAX77802_OPMODE_LP; /* ON in Low Power Mode */ |
| break; |
| case REGULATOR_MODE_NORMAL: |
| val = MAX77802_OPMODE_NORMAL; /* ON in Normal Mode */ |
| break; |
| default: |
| dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", |
| rdev->desc->name, mode); |
| return -EINVAL; |
| } |
| |
| if (WARN_ON_ONCE(id >= ARRAY_SIZE(max77802->opmode))) |
| return -EINVAL; |
| |
| max77802->opmode[id] = val; |
| return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
| rdev->desc->enable_mask, val << shift); |
| } |
| |
| static unsigned max77802_get_mode(struct regulator_dev *rdev) |
| { |
| struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
| unsigned int id = rdev_get_id(rdev); |
| |
| if (WARN_ON_ONCE(id >= ARRAY_SIZE(max77802->opmode))) |
| return -EINVAL; |
| return max77802_map_mode(max77802->opmode[id]); |
| } |
| |
| /** |
| * max77802_set_suspend_mode - set regulator opmode when the system is suspended |
| * @rdev: regulator to change mode |
| * @mode: operating mode to be set |
| * |
| * Will set the operating mode for the regulators during system suspend. |
| * This function is valid for the three different enable control logics: |
| * |
| * Enable Control Logic1 by PWRREQ (BUCK 2-4 and LDOs 2, 4-19, 22-35) |
| * Enable Control Logic2 by PWRREQ (LDOs 1, 20, 21) |
| * Enable Control Logic3 by PWRREQ (LDO 3) |
| * |
| * If setting the regulator mode fails, the function only warns but does |
| * not return an error code to avoid the regulator core to stop setting |
| * the operating mode for the remaining regulators. |
| */ |
| static int max77802_set_suspend_mode(struct regulator_dev *rdev, |
| unsigned int mode) |
| { |
| struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
| unsigned int id = rdev_get_id(rdev); |
| unsigned int val; |
| int shift = max77802_get_opmode_shift(id); |
| |
| if (WARN_ON_ONCE(id >= ARRAY_SIZE(max77802->opmode))) |
| return -EINVAL; |
| |
| /* |
| * If the regulator has been disabled for suspend |
| * then is invalid to try setting a suspend mode. |
| */ |
| if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) { |
| dev_warn(&rdev->dev, "%s: is disabled, mode: 0x%x not set\n", |
| rdev->desc->name, mode); |
| return 0; |
| } |
| |
| switch (mode) { |
| case REGULATOR_MODE_STANDBY: |
| /* |
| * If the regulator opmode is normal then enable |
| * ON in Low Power Mode by PWRREQ. If the mode is |
| * already Low Power then no action is required. |
| */ |
| if (max77802->opmode[id] == MAX77802_OPMODE_NORMAL) |
| val = MAX77802_LP_PWRREQ; |
| else |
| return 0; |
| break; |
| case REGULATOR_MODE_NORMAL: |
| /* |
| * If the regulator operating mode is Low Power then |
| * normal is not a valid opmode in suspend. If the |
| * mode is already normal then no action is required. |
| */ |
| if (max77802->opmode[id] == MAX77802_OPMODE_LP) |
| dev_warn(&rdev->dev, "%s: in Low Power: 0x%x invalid\n", |
| rdev->desc->name, mode); |
| return 0; |
| default: |
| dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", |
| rdev->desc->name, mode); |
| return -EINVAL; |
| } |
| |
| return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
| rdev->desc->enable_mask, val << shift); |
| } |
| |
| static int max77802_enable(struct regulator_dev *rdev) |
| { |
| struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
| unsigned int id = rdev_get_id(rdev); |
| int shift = max77802_get_opmode_shift(id); |
| |
| if (WARN_ON_ONCE(id >= ARRAY_SIZE(max77802->opmode))) |
| return -EINVAL; |
| if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) |
| max77802->opmode[id] = MAX77802_OPMODE_NORMAL; |
| |
| return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
| rdev->desc->enable_mask, |
| max77802->opmode[id] << shift); |
| } |
| |
| static int max77802_find_ramp_value(struct regulator_dev *rdev, |
| const unsigned int limits[], int size, |
| unsigned int ramp_delay) |
| { |
| int i; |
| |
| for (i = 0; i < size; i++) { |
| if (ramp_delay <= limits[i]) |
| return i; |
| } |
| |
| /* Use maximum value for no ramp control */ |
| dev_warn(&rdev->dev, "%s: ramp_delay: %d not supported, setting 100000\n", |
| rdev->desc->name, ramp_delay); |
| return size - 1; |
| } |
| |
| /* Used for BUCKs 2-4 */ |
| static int max77802_set_ramp_delay_2bit(struct regulator_dev *rdev, |
| int ramp_delay) |
| { |
| int id = rdev_get_id(rdev); |
| unsigned int ramp_value; |
| |
| if (id > MAX77802_BUCK4) { |
| dev_warn(&rdev->dev, |
| "%s: regulator: ramp delay not supported\n", |
| rdev->desc->name); |
| return -EINVAL; |
| } |
| ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_2bit, |
| ARRAY_SIZE(ramp_table_77802_2bit), ramp_delay); |
| |
| return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
| MAX77802_RAMP_RATE_MASK_2BIT, |
| ramp_value << MAX77802_RAMP_RATE_SHIFT_2BIT); |
| } |
| |
| /* For BUCK1, 6 */ |
| static int max77802_set_ramp_delay_4bit(struct regulator_dev *rdev, |
| int ramp_delay) |
| { |
| unsigned int ramp_value; |
| |
| ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_4bit, |
| ARRAY_SIZE(ramp_table_77802_4bit), ramp_delay); |
| |
| return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
| MAX77802_RAMP_RATE_MASK_4BIT, |
| ramp_value << MAX77802_RAMP_RATE_SHIFT_4BIT); |
| } |
| |
| /* |
| * LDOs 2, 4-19, 22-35 |
| */ |
| static const struct regulator_ops max77802_ldo_ops_logic1 = { |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = max77802_enable, |
| .disable = regulator_disable_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .set_voltage_time_sel = regulator_set_voltage_time_sel, |
| .set_suspend_disable = max77802_set_suspend_disable, |
| .set_suspend_mode = max77802_set_suspend_mode, |
| }; |
| |
| /* |
| * LDOs 1, 20, 21, 3 |
| */ |
| static const struct regulator_ops max77802_ldo_ops_logic2 = { |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = max77802_enable, |
| .disable = regulator_disable_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .set_voltage_time_sel = regulator_set_voltage_time_sel, |
| .set_mode = max77802_set_mode, |
| .get_mode = max77802_get_mode, |
| .set_suspend_mode = max77802_set_suspend_mode, |
| }; |
| |
| /* BUCKS 1, 6 */ |
| static const struct regulator_ops max77802_buck_16_dvs_ops = { |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = max77802_enable, |
| .disable = regulator_disable_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .set_voltage_time_sel = regulator_set_voltage_time_sel, |
| .set_ramp_delay = max77802_set_ramp_delay_4bit, |
| .set_suspend_disable = max77802_set_suspend_disable, |
| }; |
| |
| /* BUCKs 2-4 */ |
| static const struct regulator_ops max77802_buck_234_ops = { |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = max77802_enable, |
| .disable = regulator_disable_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .set_voltage_time_sel = regulator_set_voltage_time_sel, |
| .set_ramp_delay = max77802_set_ramp_delay_2bit, |
| .set_suspend_disable = max77802_set_suspend_disable, |
| .set_suspend_mode = max77802_set_suspend_mode, |
| }; |
| |
| /* BUCKs 5, 7-10 */ |
| static const struct regulator_ops max77802_buck_dvs_ops = { |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = max77802_enable, |
| .disable = regulator_disable_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .set_voltage_time_sel = regulator_set_voltage_time_sel, |
| .set_ramp_delay = max77802_set_ramp_delay_2bit, |
| .set_suspend_disable = max77802_set_suspend_disable, |
| }; |
| |
| /* LDOs 3-7, 9-14, 18-26, 28, 29, 32-34 */ |
| #define regulator_77802_desc_p_ldo(num, supply, log) { \ |
| .name = "LDO"#num, \ |
| .of_match = of_match_ptr("LDO"#num), \ |
| .regulators_node = of_match_ptr("regulators"), \ |
| .id = MAX77802_LDO##num, \ |
| .supply_name = "inl"#supply, \ |
| .ops = &max77802_ldo_ops_logic##log, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .owner = THIS_MODULE, \ |
| .min_uV = 800000, \ |
| .uV_step = 50000, \ |
| .ramp_delay = MAX77802_RAMP_DELAY, \ |
| .n_voltages = 1 << 6, \ |
| .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ |
| .vsel_mask = MAX77802_VSEL_MASK, \ |
| .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ |
| .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ |
| .of_map_mode = max77802_map_mode, \ |
| } |
| |
| /* LDOs 1, 2, 8, 15, 17, 27, 30, 35 */ |
| #define regulator_77802_desc_n_ldo(num, supply, log) { \ |
| .name = "LDO"#num, \ |
| .of_match = of_match_ptr("LDO"#num), \ |
| .regulators_node = of_match_ptr("regulators"), \ |
| .id = MAX77802_LDO##num, \ |
| .supply_name = "inl"#supply, \ |
| .ops = &max77802_ldo_ops_logic##log, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .owner = THIS_MODULE, \ |
| .min_uV = 800000, \ |
| .uV_step = 25000, \ |
| .ramp_delay = MAX77802_RAMP_DELAY, \ |
| .n_voltages = 1 << 6, \ |
| .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ |
| .vsel_mask = MAX77802_VSEL_MASK, \ |
| .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ |
| .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ |
| .of_map_mode = max77802_map_mode, \ |
| } |
| |
| /* BUCKs 1, 6 */ |
| #define regulator_77802_desc_16_buck(num) { \ |
| .name = "BUCK"#num, \ |
| .of_match = of_match_ptr("BUCK"#num), \ |
| .regulators_node = of_match_ptr("regulators"), \ |
| .id = MAX77802_BUCK##num, \ |
| .supply_name = "inb"#num, \ |
| .ops = &max77802_buck_16_dvs_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .owner = THIS_MODULE, \ |
| .min_uV = 612500, \ |
| .uV_step = 6250, \ |
| .ramp_delay = MAX77802_RAMP_DELAY, \ |
| .n_voltages = 1 << 8, \ |
| .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ |
| .vsel_mask = MAX77802_DVS_VSEL_MASK, \ |
| .enable_reg = MAX77802_REG_BUCK ## num ## CTRL, \ |
| .enable_mask = MAX77802_OPMODE_MASK, \ |
| .of_map_mode = max77802_map_mode, \ |
| } |
| |
| /* BUCKS 2-4 */ |
| #define regulator_77802_desc_234_buck(num) { \ |
| .name = "BUCK"#num, \ |
| .of_match = of_match_ptr("BUCK"#num), \ |
| .regulators_node = of_match_ptr("regulators"), \ |
| .id = MAX77802_BUCK##num, \ |
| .supply_name = "inb"#num, \ |
| .ops = &max77802_buck_234_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .owner = THIS_MODULE, \ |
| .min_uV = 600000, \ |
| .uV_step = 6250, \ |
| .ramp_delay = MAX77802_RAMP_DELAY, \ |
| .n_voltages = 0x91, \ |
| .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ |
| .vsel_mask = MAX77802_DVS_VSEL_MASK, \ |
| .enable_reg = MAX77802_REG_BUCK ## num ## CTRL1, \ |
| .enable_mask = MAX77802_OPMODE_MASK << \ |
| MAX77802_OPMODE_BUCK234_SHIFT, \ |
| .of_map_mode = max77802_map_mode, \ |
| } |
| |
| /* BUCK 5 */ |
| #define regulator_77802_desc_buck5(num) { \ |
| .name = "BUCK"#num, \ |
| .of_match = of_match_ptr("BUCK"#num), \ |
| .regulators_node = of_match_ptr("regulators"), \ |
| .id = MAX77802_BUCK##num, \ |
| .supply_name = "inb"#num, \ |
| .ops = &max77802_buck_dvs_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .owner = THIS_MODULE, \ |
| .min_uV = 750000, \ |
| .uV_step = 50000, \ |
| .ramp_delay = MAX77802_RAMP_DELAY, \ |
| .n_voltages = 1 << 6, \ |
| .vsel_reg = MAX77802_REG_BUCK5OUT, \ |
| .vsel_mask = MAX77802_VSEL_MASK, \ |
| .enable_reg = MAX77802_REG_BUCK5CTRL, \ |
| .enable_mask = MAX77802_OPMODE_MASK, \ |
| .of_map_mode = max77802_map_mode, \ |
| } |
| |
| /* BUCKs 7-10 */ |
| #define regulator_77802_desc_buck7_10(num) { \ |
| .name = "BUCK"#num, \ |
| .of_match = of_match_ptr("BUCK"#num), \ |
| .regulators_node = of_match_ptr("regulators"), \ |
| .id = MAX77802_BUCK##num, \ |
| .supply_name = "inb"#num, \ |
| .ops = &max77802_buck_dvs_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .owner = THIS_MODULE, \ |
| .min_uV = 750000, \ |
| .uV_step = 50000, \ |
| .ramp_delay = MAX77802_RAMP_DELAY, \ |
| .n_voltages = 1 << 6, \ |
| .vsel_reg = MAX77802_REG_BUCK7OUT + (num - 7) * 3, \ |
| .vsel_mask = MAX77802_VSEL_MASK, \ |
| .enable_reg = MAX77802_REG_BUCK7CTRL + (num - 7) * 3, \ |
| .enable_mask = MAX77802_OPMODE_MASK, \ |
| .of_map_mode = max77802_map_mode, \ |
| } |
| |
| static const struct regulator_desc regulators[] = { |
| regulator_77802_desc_16_buck(1), |
| regulator_77802_desc_234_buck(2), |
| regulator_77802_desc_234_buck(3), |
| regulator_77802_desc_234_buck(4), |
| regulator_77802_desc_buck5(5), |
| regulator_77802_desc_16_buck(6), |
| regulator_77802_desc_buck7_10(7), |
| regulator_77802_desc_buck7_10(8), |
| regulator_77802_desc_buck7_10(9), |
| regulator_77802_desc_buck7_10(10), |
| regulator_77802_desc_n_ldo(1, 10, 2), |
| regulator_77802_desc_n_ldo(2, 10, 1), |
| regulator_77802_desc_p_ldo(3, 3, 2), |
| regulator_77802_desc_p_ldo(4, 6, 1), |
| regulator_77802_desc_p_ldo(5, 3, 1), |
| regulator_77802_desc_p_ldo(6, 3, 1), |
| regulator_77802_desc_p_ldo(7, 3, 1), |
| regulator_77802_desc_n_ldo(8, 1, 1), |
| regulator_77802_desc_p_ldo(9, 5, 1), |
| regulator_77802_desc_p_ldo(10, 4, 1), |
| regulator_77802_desc_p_ldo(11, 4, 1), |
| regulator_77802_desc_p_ldo(12, 9, 1), |
| regulator_77802_desc_p_ldo(13, 4, 1), |
| regulator_77802_desc_p_ldo(14, 4, 1), |
| regulator_77802_desc_n_ldo(15, 1, 1), |
| regulator_77802_desc_n_ldo(17, 2, 1), |
| regulator_77802_desc_p_ldo(18, 7, 1), |
| regulator_77802_desc_p_ldo(19, 5, 1), |
| regulator_77802_desc_p_ldo(20, 7, 2), |
| regulator_77802_desc_p_ldo(21, 6, 2), |
| regulator_77802_desc_p_ldo(23, 9, 1), |
| regulator_77802_desc_p_ldo(24, 6, 1), |
| regulator_77802_desc_p_ldo(25, 9, 1), |
| regulator_77802_desc_p_ldo(26, 9, 1), |
| regulator_77802_desc_n_ldo(27, 2, 1), |
| regulator_77802_desc_p_ldo(28, 7, 1), |
| regulator_77802_desc_p_ldo(29, 7, 1), |
| regulator_77802_desc_n_ldo(30, 2, 1), |
| regulator_77802_desc_p_ldo(32, 9, 1), |
| regulator_77802_desc_p_ldo(33, 6, 1), |
| regulator_77802_desc_p_ldo(34, 9, 1), |
| regulator_77802_desc_n_ldo(35, 2, 1), |
| }; |
| |
| static int max77802_pmic_probe(struct platform_device *pdev) |
| { |
| struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); |
| struct max77802_regulator_prv *max77802; |
| int i, val; |
| struct regulator_config config = { }; |
| |
| max77802 = devm_kzalloc(&pdev->dev, |
| sizeof(struct max77802_regulator_prv), |
| GFP_KERNEL); |
| if (!max77802) |
| return -ENOMEM; |
| |
| config.dev = iodev->dev; |
| config.regmap = iodev->regmap; |
| config.driver_data = max77802; |
| platform_set_drvdata(pdev, max77802); |
| |
| for (i = 0; i < MAX77802_REG_MAX; i++) { |
| struct regulator_dev *rdev; |
| unsigned int id = regulators[i].id; |
| int shift = max77802_get_opmode_shift(id); |
| int ret; |
| |
| ret = regmap_read(iodev->regmap, regulators[i].enable_reg, &val); |
| if (ret < 0) { |
| dev_warn(&pdev->dev, |
| "cannot read current mode for %d\n", i); |
| val = MAX77802_OPMODE_NORMAL; |
| } else { |
| val = val >> shift & MAX77802_OPMODE_MASK; |
| } |
| |
| /* |
| * If the regulator is disabled and the system warm rebooted, |
| * the hardware reports OFF as the regulator operating mode. |
| * Default to operating mode NORMAL in that case. |
| */ |
| if (id < ARRAY_SIZE(max77802->opmode)) { |
| if (val == MAX77802_STATUS_OFF) |
| max77802->opmode[id] = MAX77802_OPMODE_NORMAL; |
| else |
| max77802->opmode[id] = val; |
| } |
| |
| rdev = devm_regulator_register(&pdev->dev, |
| ®ulators[i], &config); |
| if (IS_ERR(rdev)) { |
| ret = PTR_ERR(rdev); |
| dev_err(&pdev->dev, |
| "regulator init failed for %d: %d\n", i, ret); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static const struct platform_device_id max77802_pmic_id[] = { |
| {"max77802-pmic", 0}, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(platform, max77802_pmic_id); |
| |
| static struct platform_driver max77802_pmic_driver = { |
| .driver = { |
| .name = "max77802-pmic", |
| }, |
| .probe = max77802_pmic_probe, |
| .id_table = max77802_pmic_id, |
| }; |
| |
| module_platform_driver(max77802_pmic_driver); |
| |
| MODULE_DESCRIPTION("MAXIM 77802 Regulator Driver"); |
| MODULE_AUTHOR("Simon Glass <sjg@chromium.org>"); |
| MODULE_LICENSE("GPL"); |