| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jonghwa Lee | 695 | 42.20% | 1 | 3.23% |
| Yadwinder Singh Brar | 413 | 25.08% | 6 | 19.35% |
| Krzysztof Kozlowski | 357 | 21.68% | 11 | 35.48% |
| Axel Lin | 66 | 4.01% | 5 | 16.13% |
| Linus Walleij | 53 | 3.22% | 2 | 6.45% |
| Thiago Farina | 29 | 1.76% | 1 | 3.23% |
| Joe Perches | 17 | 1.03% | 1 | 3.23% |
| Sachin Kamat | 7 | 0.43% | 1 | 3.23% |
| Dmitry Torokhov | 5 | 0.30% | 1 | 3.23% |
| Bhumika Goyal | 4 | 0.24% | 1 | 3.23% |
| Javier Martinez Canillas | 1 | 0.06% | 1 | 3.23% |
| Total | 1647 | 31 |
// SPDX-License-Identifier: GPL-2.0+ // // max77686.c - Regulator driver for the Maxim 77686 // // 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/gpio/consumer.h> #include <linux/slab.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> #define MAX77686_LDO_MINUV 800000 #define MAX77686_LDO_UVSTEP 50000 #define MAX77686_LDO_LOW_MINUV 800000 #define MAX77686_LDO_LOW_UVSTEP 25000 #define MAX77686_BUCK_MINUV 750000 #define MAX77686_BUCK_UVSTEP 50000 #define MAX77686_BUCK_ENABLE_TIME 40 /* us */ #define MAX77686_DVS_ENABLE_TIME 22 /* us */ #define MAX77686_RAMP_DELAY 100000 /* uV/us */ #define MAX77686_DVS_RAMP_DELAY 27500 /* uV/us */ #define MAX77686_DVS_MINUV 600000 #define MAX77686_DVS_UVSTEP 12500 /* * Value for configuring buck[89] and LDO{20,21,22} as GPIO control. * It is the same as 'off' for other regulators. */ #define MAX77686_GPIO_CONTROL 0x0 /* * Values used for configuring LDOs and bucks. * Forcing low power mode: LDO1, 3-5, 9, 13, 17-26 */ #define MAX77686_LDO_LOWPOWER 0x1 /* * On/off controlled by PWRREQ: * - LDO2, 6-8, 10-12, 14-16 * - buck[1234] */ #define MAX77686_OFF_PWRREQ 0x1 /* Low power mode controlled by PWRREQ: All LDOs */ #define MAX77686_LDO_LOWPOWER_PWRREQ 0x2 /* Forcing low power mode: buck[234] */ #define MAX77686_BUCK_LOWPOWER 0x2 #define MAX77686_NORMAL 0x3 #define MAX77686_OPMODE_SHIFT 6 #define MAX77686_OPMODE_BUCK234_SHIFT 4 #define MAX77686_OPMODE_MASK 0x3 #define MAX77686_VSEL_MASK 0x3F #define MAX77686_DVS_VSEL_MASK 0xFF #define MAX77686_RAMP_RATE_MASK 0xC0 #define MAX77686_REGULATORS MAX77686_REG_MAX #define MAX77686_LDOS 26 struct max77686_data { struct device *dev; DECLARE_BITMAP(gpio_enabled, MAX77686_REGULATORS); /* Array indexed by regulator id */ unsigned int opmode[MAX77686_REGULATORS]; }; static unsigned int max77686_get_opmode_shift(int id) { switch (id) { case MAX77686_BUCK1: case MAX77686_BUCK5 ... MAX77686_BUCK9: return 0; case MAX77686_BUCK2 ... MAX77686_BUCK4: return MAX77686_OPMODE_BUCK234_SHIFT; default: /* all LDOs */ return MAX77686_OPMODE_SHIFT; } } /* * When regulator is configured for GPIO control then it * replaces "normal" mode. Any change from low power mode to normal * should actually change to GPIO control. * Map normal mode to proper value for such regulators. */ static unsigned int max77686_map_normal_mode(struct max77686_data *max77686, int id) { switch (id) { case MAX77686_BUCK8: case MAX77686_BUCK9: case MAX77686_LDO20 ... MAX77686_LDO22: if (test_bit(id, max77686->gpio_enabled)) return MAX77686_GPIO_CONTROL; } return MAX77686_NORMAL; } /* Some BUCKs and LDOs supports Normal[ON/OFF] mode during suspend */ static int max77686_set_suspend_disable(struct regulator_dev *rdev) { unsigned int val, shift; struct max77686_data *max77686 = rdev_get_drvdata(rdev); int ret, id = rdev_get_id(rdev); shift = max77686_get_opmode_shift(id); val = MAX77686_OFF_PWRREQ; ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, rdev->desc->enable_mask, val << shift); if (ret) return ret; max77686->opmode[id] = val; return 0; } /* Some LDOs supports [LPM/Normal]ON mode during suspend state */ static int max77686_set_suspend_mode(struct regulator_dev *rdev, unsigned int mode) { struct max77686_data *max77686 = rdev_get_drvdata(rdev); unsigned int val; int ret, id = rdev_get_id(rdev); /* BUCK[5-9] doesn't support this feature */ if (id >= MAX77686_BUCK5) return 0; switch (mode) { case REGULATOR_MODE_IDLE: /* ON in LP Mode */ val = MAX77686_LDO_LOWPOWER_PWRREQ; break; case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */ val = max77686_map_normal_mode(max77686, id); break; default: pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n", rdev->desc->name, mode); return -EINVAL; } ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, rdev->desc->enable_mask, val << MAX77686_OPMODE_SHIFT); if (ret) return ret; max77686->opmode[id] = val; return 0; } /* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */ static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned int mode) { unsigned int val; struct max77686_data *max77686 = rdev_get_drvdata(rdev); int ret, id = rdev_get_id(rdev); switch (mode) { case REGULATOR_MODE_STANDBY: /* switch off */ val = MAX77686_OFF_PWRREQ; break; case REGULATOR_MODE_IDLE: /* ON in LP Mode */ val = MAX77686_LDO_LOWPOWER_PWRREQ; break; case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */ val = max77686_map_normal_mode(max77686, id); break; default: pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n", rdev->desc->name, mode); return -EINVAL; } ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, rdev->desc->enable_mask, val << MAX77686_OPMODE_SHIFT); if (ret) return ret; max77686->opmode[id] = val; return 0; } static int max77686_enable(struct regulator_dev *rdev) { struct max77686_data *max77686 = rdev_get_drvdata(rdev); unsigned int shift; int id = rdev_get_id(rdev); shift = max77686_get_opmode_shift(id); if (max77686->opmode[id] == MAX77686_OFF_PWRREQ) max77686->opmode[id] = max77686_map_normal_mode(max77686, id); return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, rdev->desc->enable_mask, max77686->opmode[id] << shift); } static int max77686_of_parse_cb(struct device_node *np, const struct regulator_desc *desc, struct regulator_config *config) { struct max77686_data *max77686 = config->driver_data; int ret; switch (desc->id) { case MAX77686_BUCK8: case MAX77686_BUCK9: case MAX77686_LDO20 ... MAX77686_LDO22: config->ena_gpiod = fwnode_gpiod_get_index( of_fwnode_handle(np), "maxim,ena", 0, GPIOD_OUT_HIGH | GPIOD_FLAGS_BIT_NONEXCLUSIVE, "max77686-regulator"); if (IS_ERR(config->ena_gpiod)) config->ena_gpiod = NULL; break; default: return 0; } if (config->ena_gpiod) { set_bit(desc->id, max77686->gpio_enabled); ret = regmap_update_bits(config->regmap, desc->enable_reg, desc->enable_mask, MAX77686_GPIO_CONTROL); if (ret) { gpiod_put(config->ena_gpiod); config->ena_gpiod = NULL; } } return 0; } static const unsigned int max77686_buck_dvs_ramp_table[] = { 13750, 27500, 55000, 100000 }; static const struct regulator_ops max77686_ops = { .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .is_enabled = regulator_is_enabled_regmap, .enable = max77686_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_mode = max77686_set_suspend_mode, }; static const struct regulator_ops max77686_ldo_ops = { .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .is_enabled = regulator_is_enabled_regmap, .enable = max77686_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_mode = max77686_ldo_set_suspend_mode, .set_suspend_disable = max77686_set_suspend_disable, }; static const struct regulator_ops max77686_buck1_ops = { .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .is_enabled = regulator_is_enabled_regmap, .enable = max77686_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 = max77686_set_suspend_disable, }; static const struct regulator_ops max77686_buck_dvs_ops = { .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .is_enabled = regulator_is_enabled_regmap, .enable = max77686_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 = regulator_set_ramp_delay_regmap, .set_suspend_disable = max77686_set_suspend_disable, }; #define regulator_desc_ldo(num) { \ .name = "LDO"#num, \ .of_match = of_match_ptr("LDO"#num), \ .regulators_node = of_match_ptr("voltage-regulators"), \ .of_parse_cb = max77686_of_parse_cb, \ .id = MAX77686_LDO##num, \ .ops = &max77686_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = MAX77686_LDO_MINUV, \ .uV_step = MAX77686_LDO_UVSTEP, \ .ramp_delay = MAX77686_RAMP_DELAY, \ .n_voltages = MAX77686_VSEL_MASK + 1, \ .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ .vsel_mask = MAX77686_VSEL_MASK, \ .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ .enable_mask = MAX77686_OPMODE_MASK \ << MAX77686_OPMODE_SHIFT, \ } #define regulator_desc_lpm_ldo(num) { \ .name = "LDO"#num, \ .of_match = of_match_ptr("LDO"#num), \ .regulators_node = of_match_ptr("voltage-regulators"), \ .id = MAX77686_LDO##num, \ .ops = &max77686_ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = MAX77686_LDO_MINUV, \ .uV_step = MAX77686_LDO_UVSTEP, \ .ramp_delay = MAX77686_RAMP_DELAY, \ .n_voltages = MAX77686_VSEL_MASK + 1, \ .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ .vsel_mask = MAX77686_VSEL_MASK, \ .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ .enable_mask = MAX77686_OPMODE_MASK \ << MAX77686_OPMODE_SHIFT, \ } #define regulator_desc_ldo_low(num) { \ .name = "LDO"#num, \ .of_match = of_match_ptr("LDO"#num), \ .regulators_node = of_match_ptr("voltage-regulators"), \ .id = MAX77686_LDO##num, \ .ops = &max77686_ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = MAX77686_LDO_LOW_MINUV, \ .uV_step = MAX77686_LDO_LOW_UVSTEP, \ .ramp_delay = MAX77686_RAMP_DELAY, \ .n_voltages = MAX77686_VSEL_MASK + 1, \ .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ .vsel_mask = MAX77686_VSEL_MASK, \ .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ .enable_mask = MAX77686_OPMODE_MASK \ << MAX77686_OPMODE_SHIFT, \ } #define regulator_desc_ldo1_low(num) { \ .name = "LDO"#num, \ .of_match = of_match_ptr("LDO"#num), \ .regulators_node = of_match_ptr("voltage-regulators"), \ .id = MAX77686_LDO##num, \ .ops = &max77686_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = MAX77686_LDO_LOW_MINUV, \ .uV_step = MAX77686_LDO_LOW_UVSTEP, \ .ramp_delay = MAX77686_RAMP_DELAY, \ .n_voltages = MAX77686_VSEL_MASK + 1, \ .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ .vsel_mask = MAX77686_VSEL_MASK, \ .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ .enable_mask = MAX77686_OPMODE_MASK \ << MAX77686_OPMODE_SHIFT, \ } #define regulator_desc_buck(num) { \ .name = "BUCK"#num, \ .of_match = of_match_ptr("BUCK"#num), \ .regulators_node = of_match_ptr("voltage-regulators"), \ .of_parse_cb = max77686_of_parse_cb, \ .id = MAX77686_BUCK##num, \ .ops = &max77686_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = MAX77686_BUCK_MINUV, \ .uV_step = MAX77686_BUCK_UVSTEP, \ .ramp_delay = MAX77686_RAMP_DELAY, \ .enable_time = MAX77686_BUCK_ENABLE_TIME, \ .n_voltages = MAX77686_VSEL_MASK + 1, \ .vsel_reg = MAX77686_REG_BUCK5OUT + (num - 5) * 2, \ .vsel_mask = MAX77686_VSEL_MASK, \ .enable_reg = MAX77686_REG_BUCK5CTRL + (num - 5) * 2, \ .enable_mask = MAX77686_OPMODE_MASK, \ } #define regulator_desc_buck1(num) { \ .name = "BUCK"#num, \ .of_match = of_match_ptr("BUCK"#num), \ .regulators_node = of_match_ptr("voltage-regulators"), \ .id = MAX77686_BUCK##num, \ .ops = &max77686_buck1_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = MAX77686_BUCK_MINUV, \ .uV_step = MAX77686_BUCK_UVSTEP, \ .ramp_delay = MAX77686_RAMP_DELAY, \ .enable_time = MAX77686_BUCK_ENABLE_TIME, \ .n_voltages = MAX77686_VSEL_MASK + 1, \ .vsel_reg = MAX77686_REG_BUCK1OUT, \ .vsel_mask = MAX77686_VSEL_MASK, \ .enable_reg = MAX77686_REG_BUCK1CTRL, \ .enable_mask = MAX77686_OPMODE_MASK, \ } #define regulator_desc_buck_dvs(num) { \ .name = "BUCK"#num, \ .of_match = of_match_ptr("BUCK"#num), \ .regulators_node = of_match_ptr("voltage-regulators"), \ .id = MAX77686_BUCK##num, \ .ops = &max77686_buck_dvs_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = MAX77686_DVS_MINUV, \ .uV_step = MAX77686_DVS_UVSTEP, \ .ramp_delay = MAX77686_DVS_RAMP_DELAY, \ .enable_time = MAX77686_DVS_ENABLE_TIME, \ .n_voltages = MAX77686_DVS_VSEL_MASK + 1, \ .vsel_reg = MAX77686_REG_BUCK2DVS1 + (num - 2) * 10, \ .vsel_mask = MAX77686_DVS_VSEL_MASK, \ .enable_reg = MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10, \ .enable_mask = MAX77686_OPMODE_MASK \ << MAX77686_OPMODE_BUCK234_SHIFT, \ .ramp_reg = MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10, \ .ramp_mask = MAX77686_RAMP_RATE_MASK, \ .ramp_delay_table = max77686_buck_dvs_ramp_table, \ .n_ramp_values = ARRAY_SIZE(max77686_buck_dvs_ramp_table), \ } static const struct regulator_desc regulators[] = { regulator_desc_ldo1_low(1), regulator_desc_ldo_low(2), regulator_desc_ldo(3), regulator_desc_ldo(4), regulator_desc_ldo(5), regulator_desc_ldo_low(6), regulator_desc_ldo_low(7), regulator_desc_ldo_low(8), regulator_desc_ldo(9), regulator_desc_lpm_ldo(10), regulator_desc_lpm_ldo(11), regulator_desc_lpm_ldo(12), regulator_desc_ldo(13), regulator_desc_lpm_ldo(14), regulator_desc_ldo_low(15), regulator_desc_lpm_ldo(16), regulator_desc_ldo(17), regulator_desc_ldo(18), regulator_desc_ldo(19), regulator_desc_ldo(20), regulator_desc_ldo(21), regulator_desc_ldo(22), regulator_desc_ldo(23), regulator_desc_ldo(24), regulator_desc_ldo(25), regulator_desc_ldo(26), regulator_desc_buck1(1), regulator_desc_buck_dvs(2), regulator_desc_buck_dvs(3), regulator_desc_buck_dvs(4), regulator_desc_buck(5), regulator_desc_buck(6), regulator_desc_buck(7), regulator_desc_buck(8), regulator_desc_buck(9), }; static int max77686_pmic_probe(struct platform_device *pdev) { struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); struct max77686_data *max77686; int i; struct regulator_config config = { }; dev_dbg(&pdev->dev, "%s\n", __func__); max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data), GFP_KERNEL); if (!max77686) return -ENOMEM; max77686->dev = &pdev->dev; config.dev = iodev->dev; config.regmap = iodev->regmap; config.driver_data = max77686; platform_set_drvdata(pdev, max77686); for (i = 0; i < MAX77686_REGULATORS; i++) { struct regulator_dev *rdev; int id = regulators[i].id; max77686->opmode[id] = MAX77686_NORMAL; rdev = devm_regulator_register(&pdev->dev, ®ulators[i], &config); if (IS_ERR(rdev)) { int 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 max77686_pmic_id[] = { {"max77686-pmic", 0}, { }, }; MODULE_DEVICE_TABLE(platform, max77686_pmic_id); static struct platform_driver max77686_pmic_driver = { .driver = { .name = "max77686-pmic", }, .probe = max77686_pmic_probe, .id_table = max77686_pmic_id, }; module_platform_driver(max77686_pmic_driver); MODULE_DESCRIPTION("MAXIM 77686 Regulator Driver"); MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>"); MODULE_LICENSE("GPL");
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