| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Boris Brezillon | 655 | 47.19% | 1 | 14.29% |
| Wenyou Yang | 639 | 46.04% | 1 | 14.29% |
| Claudiu Beznea | 92 | 6.63% | 3 | 42.86% |
| Bhumika Goyal | 1 | 0.07% | 1 | 14.29% |
| Wei Yongjun | 1 | 0.07% | 1 | 14.29% |
| Total | 1388 | 7 |
/* * Voltage regulation driver for active-semi ACT8945A PMIC * * Copyright (C) 2015 Atmel Corporation * * Author: Wenyou Yang <wenyou.yang@atmel.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * */ #include <linux/module.h> #include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <dt-bindings/regulator/active-semi,8945a-regulator.h> /** * ACT8945A Global Register Map. */ #define ACT8945A_SYS_MODE 0x00 #define ACT8945A_SYS_CTRL 0x01 #define ACT8945A_SYS_UNLK_REGS 0x0b #define ACT8945A_DCDC1_VSET1 0x20 #define ACT8945A_DCDC1_VSET2 0x21 #define ACT8945A_DCDC1_CTRL 0x22 #define ACT8945A_DCDC1_SUS 0x24 #define ACT8945A_DCDC2_VSET1 0x30 #define ACT8945A_DCDC2_VSET2 0x31 #define ACT8945A_DCDC2_CTRL 0x32 #define ACT8945A_DCDC2_SUS 0x34 #define ACT8945A_DCDC3_VSET1 0x40 #define ACT8945A_DCDC3_VSET2 0x41 #define ACT8945A_DCDC3_CTRL 0x42 #define ACT8945A_DCDC3_SUS 0x44 #define ACT8945A_LDO1_VSET 0x50 #define ACT8945A_LDO1_CTRL 0x51 #define ACT8945A_LDO1_SUS 0x52 #define ACT8945A_LDO2_VSET 0x54 #define ACT8945A_LDO2_CTRL 0x55 #define ACT8945A_LDO2_SUS 0x56 #define ACT8945A_LDO3_VSET 0x60 #define ACT8945A_LDO3_CTRL 0x61 #define ACT8945A_LDO3_SUS 0x62 #define ACT8945A_LDO4_VSET 0x64 #define ACT8945A_LDO4_CTRL 0x65 #define ACT8945A_LDO4_SUS 0x66 /** * Field Definitions. */ #define ACT8945A_ENA 0x80 /* ON - [7] */ #define ACT8945A_VSEL_MASK 0x3F /* VSET - [5:0] */ /** * ACT8945A Voltage Number */ #define ACT8945A_VOLTAGE_NUM 64 enum { ACT8945A_ID_DCDC1, ACT8945A_ID_DCDC2, ACT8945A_ID_DCDC3, ACT8945A_ID_LDO1, ACT8945A_ID_LDO2, ACT8945A_ID_LDO3, ACT8945A_ID_LDO4, ACT8945A_ID_MAX, }; struct act8945a_pmic { struct regmap *regmap; u32 op_mode[ACT8945A_ID_MAX]; }; static const struct regulator_linear_range act8945a_voltage_ranges[] = { REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000), REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000), REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000), }; static int act8945a_set_suspend_state(struct regulator_dev *rdev, bool enable) { struct regmap *regmap = rdev->regmap; int id = rdev->desc->id, reg, val; switch (id) { case ACT8945A_ID_DCDC1: reg = ACT8945A_DCDC1_SUS; val = 0xa8; break; case ACT8945A_ID_DCDC2: reg = ACT8945A_DCDC2_SUS; val = 0xa8; break; case ACT8945A_ID_DCDC3: reg = ACT8945A_DCDC3_SUS; val = 0xa8; break; case ACT8945A_ID_LDO1: reg = ACT8945A_LDO1_SUS; val = 0xe8; break; case ACT8945A_ID_LDO2: reg = ACT8945A_LDO2_SUS; val = 0xe8; break; case ACT8945A_ID_LDO3: reg = ACT8945A_LDO3_SUS; val = 0xe8; break; case ACT8945A_ID_LDO4: reg = ACT8945A_LDO4_SUS; val = 0xe8; break; default: return -EINVAL; } if (enable) val |= BIT(4); /* * Ask the PMIC to enable/disable this output when entering hibernate * mode. */ return regmap_write(regmap, reg, val); } static int act8945a_set_suspend_enable(struct regulator_dev *rdev) { return act8945a_set_suspend_state(rdev, true); } static int act8945a_set_suspend_disable(struct regulator_dev *rdev) { return act8945a_set_suspend_state(rdev, false); } static unsigned int act8945a_of_map_mode(unsigned int mode) { switch (mode) { case ACT8945A_REGULATOR_MODE_FIXED: case ACT8945A_REGULATOR_MODE_NORMAL: return REGULATOR_MODE_NORMAL; case ACT8945A_REGULATOR_MODE_LOWPOWER: return REGULATOR_MODE_STANDBY; default: return REGULATOR_MODE_INVALID; } } static int act8945a_set_mode(struct regulator_dev *rdev, unsigned int mode) { struct act8945a_pmic *act8945a = rdev_get_drvdata(rdev); struct regmap *regmap = rdev->regmap; int id = rdev->desc->id; int reg, ret, val = 0; switch (id) { case ACT8945A_ID_DCDC1: reg = ACT8945A_DCDC1_CTRL; break; case ACT8945A_ID_DCDC2: reg = ACT8945A_DCDC2_CTRL; break; case ACT8945A_ID_DCDC3: reg = ACT8945A_DCDC3_CTRL; break; case ACT8945A_ID_LDO1: reg = ACT8945A_LDO1_SUS; break; case ACT8945A_ID_LDO2: reg = ACT8945A_LDO2_SUS; break; case ACT8945A_ID_LDO3: reg = ACT8945A_LDO3_SUS; break; case ACT8945A_ID_LDO4: reg = ACT8945A_LDO4_SUS; break; default: return -EINVAL; } switch (mode) { case REGULATOR_MODE_STANDBY: if (rdev->desc->id > ACT8945A_ID_DCDC3) val = BIT(5); break; case REGULATOR_MODE_NORMAL: if (rdev->desc->id <= ACT8945A_ID_DCDC3) val = BIT(5); break; default: return -EINVAL; } ret = regmap_update_bits(regmap, reg, BIT(5), val); if (ret) return ret; act8945a->op_mode[id] = mode; return 0; } static unsigned int act8945a_get_mode(struct regulator_dev *rdev) { struct act8945a_pmic *act8945a = rdev_get_drvdata(rdev); int id = rdev->desc->id; if (id < ACT8945A_ID_DCDC1 || id >= ACT8945A_ID_MAX) return -EINVAL; return act8945a->op_mode[id]; } static const struct regulator_ops act8945a_ops = { .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .set_mode = act8945a_set_mode, .get_mode = act8945a_get_mode, .is_enabled = regulator_is_enabled_regmap, .set_suspend_enable = act8945a_set_suspend_enable, .set_suspend_disable = act8945a_set_suspend_disable, }; #define ACT89xx_REG(_name, _family, _id, _vsel_reg, _supply) \ [_family##_ID_##_id] = { \ .name = _name, \ .supply_name = _supply, \ .of_match = of_match_ptr("REG_"#_id), \ .of_map_mode = act8945a_of_map_mode, \ .regulators_node = of_match_ptr("regulators"), \ .id = _family##_ID_##_id, \ .type = REGULATOR_VOLTAGE, \ .ops = &act8945a_ops, \ .n_voltages = ACT8945A_VOLTAGE_NUM, \ .linear_ranges = act8945a_voltage_ranges, \ .n_linear_ranges = ARRAY_SIZE(act8945a_voltage_ranges), \ .vsel_reg = _family##_##_id##_##_vsel_reg, \ .vsel_mask = ACT8945A_VSEL_MASK, \ .enable_reg = _family##_##_id##_CTRL, \ .enable_mask = ACT8945A_ENA, \ .owner = THIS_MODULE, \ } static const struct regulator_desc act8945a_regulators[] = { ACT89xx_REG("DCDC_REG1", ACT8945A, DCDC1, VSET1, "vp1"), ACT89xx_REG("DCDC_REG2", ACT8945A, DCDC2, VSET1, "vp2"), ACT89xx_REG("DCDC_REG3", ACT8945A, DCDC3, VSET1, "vp3"), ACT89xx_REG("LDO_REG1", ACT8945A, LDO1, VSET, "inl45"), ACT89xx_REG("LDO_REG2", ACT8945A, LDO2, VSET, "inl45"), ACT89xx_REG("LDO_REG3", ACT8945A, LDO3, VSET, "inl67"), ACT89xx_REG("LDO_REG4", ACT8945A, LDO4, VSET, "inl67"), }; static const struct regulator_desc act8945a_alt_regulators[] = { ACT89xx_REG("DCDC_REG1", ACT8945A, DCDC1, VSET2, "vp1"), ACT89xx_REG("DCDC_REG2", ACT8945A, DCDC2, VSET2, "vp2"), ACT89xx_REG("DCDC_REG3", ACT8945A, DCDC3, VSET2, "vp3"), ACT89xx_REG("LDO_REG1", ACT8945A, LDO1, VSET, "inl45"), ACT89xx_REG("LDO_REG2", ACT8945A, LDO2, VSET, "inl45"), ACT89xx_REG("LDO_REG3", ACT8945A, LDO3, VSET, "inl67"), ACT89xx_REG("LDO_REG4", ACT8945A, LDO4, VSET, "inl67"), }; static int act8945a_pmic_probe(struct platform_device *pdev) { struct regulator_config config = { }; const struct regulator_desc *regulators; struct act8945a_pmic *act8945a; struct regulator_dev *rdev; int i, num_regulators; bool voltage_select; act8945a = devm_kzalloc(&pdev->dev, sizeof(*act8945a), GFP_KERNEL); if (!act8945a) return -ENOMEM; act8945a->regmap = dev_get_regmap(pdev->dev.parent, NULL); if (!act8945a->regmap) { dev_err(&pdev->dev, "could not retrieve regmap from parent device\n"); return -EINVAL; } voltage_select = of_property_read_bool(pdev->dev.parent->of_node, "active-semi,vsel-high"); if (voltage_select) { regulators = act8945a_alt_regulators; num_regulators = ARRAY_SIZE(act8945a_alt_regulators); } else { regulators = act8945a_regulators; num_regulators = ARRAY_SIZE(act8945a_regulators); } config.dev = &pdev->dev; config.dev->of_node = pdev->dev.parent->of_node; config.driver_data = act8945a; for (i = 0; i < num_regulators; i++) { rdev = devm_regulator_register(&pdev->dev, ®ulators[i], &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register %s regulator\n", regulators[i].name); return PTR_ERR(rdev); } } platform_set_drvdata(pdev, act8945a); /* Unlock expert registers. */ return regmap_write(act8945a->regmap, ACT8945A_SYS_UNLK_REGS, 0xef); } static int __maybe_unused act8945a_suspend(struct device *pdev) { struct act8945a_pmic *act8945a = dev_get_drvdata(pdev); /* * Ask the PMIC to enter the suspend mode on the next PWRHLD * transition. */ return regmap_write(act8945a->regmap, ACT8945A_SYS_CTRL, 0x42); } static SIMPLE_DEV_PM_OPS(act8945a_pm, act8945a_suspend, NULL); static void act8945a_pmic_shutdown(struct platform_device *pdev) { struct act8945a_pmic *act8945a = platform_get_drvdata(pdev); /* * Ask the PMIC to shutdown everything on the next PWRHLD transition. */ regmap_write(act8945a->regmap, ACT8945A_SYS_CTRL, 0x0); } static struct platform_driver act8945a_pmic_driver = { .driver = { .name = "act8945a-regulator", .pm = &act8945a_pm, }, .probe = act8945a_pmic_probe, .shutdown = act8945a_pmic_shutdown, }; module_platform_driver(act8945a_pmic_driver); MODULE_DESCRIPTION("Active-semi ACT8945A voltage regulator driver"); MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>"); MODULE_LICENSE("GPL");
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