| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Guodong Xu | 1855 | 91.24% | 2 | 28.57% |
| Axel Lin | 175 | 8.61% | 3 | 42.86% |
| Matti Vaittinen | 2 | 0.10% | 1 | 14.29% |
| Baoyou Xie | 1 | 0.05% | 1 | 14.29% |
| Total | 2033 | 7 |
// SPDX-License-Identifier: GPL-2.0 // // Device driver for regulators in Hi6421 IC // // Copyright (c) <2011-2014> HiSilicon Technologies Co., Ltd. // http://www.hisilicon.com // Copyright (c) <2013-2014> Linaro Ltd. // http://www.linaro.org // // Author: Guodong Xu <guodong.xu@linaro.org> #include <linux/slab.h> #include <linux/device.h> #include <linux/module.h> #include <linux/err.h> #include <linux/platform_device.h> #include <linux/of.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regulator/of_regulator.h> #include <linux/mfd/hi6421-pmic.h> /* * struct hi6421_regulator_pdata - Hi6421 regulator data of platform device * @lock: mutex to serialize regulator enable */ struct hi6421_regulator_pdata { struct mutex lock; }; /* * struct hi6421_regulator_info - hi6421 regulator information * @desc: regulator description * @mode_mask: ECO mode bitmask of LDOs; for BUCKs, this masks sleep * @eco_microamp: eco mode load upper limit (in uA), valid for LDOs only */ struct hi6421_regulator_info { struct regulator_desc desc; u8 mode_mask; u32 eco_microamp; }; /* HI6421 regulators */ enum hi6421_regulator_id { HI6421_LDO0, HI6421_LDO1, HI6421_LDO2, HI6421_LDO3, HI6421_LDO4, HI6421_LDO5, HI6421_LDO6, HI6421_LDO7, HI6421_LDO8, HI6421_LDO9, HI6421_LDO10, HI6421_LDO11, HI6421_LDO12, HI6421_LDO13, HI6421_LDO14, HI6421_LDO15, HI6421_LDO16, HI6421_LDO17, HI6421_LDO18, HI6421_LDO19, HI6421_LDO20, HI6421_LDOAUDIO, HI6421_BUCK0, HI6421_BUCK1, HI6421_BUCK2, HI6421_BUCK3, HI6421_BUCK4, HI6421_BUCK5, HI6421_NUM_REGULATORS, }; /* LDO 0, 4~7, 9~14, 16~20 have same voltage table. */ static const unsigned int ldo_0_voltages[] = { 1500000, 1800000, 2400000, 2500000, 2600000, 2700000, 2850000, 3000000, }; /* LDO 8, 15 have same voltage table. */ static const unsigned int ldo_8_voltages[] = { 1500000, 1800000, 2400000, 2600000, 2700000, 2850000, 3000000, 3300000, }; /* Ranges are sorted in ascending order. */ static const struct linear_range ldo_audio_volt_range[] = { REGULATOR_LINEAR_RANGE(2800000, 0, 3, 50000), REGULATOR_LINEAR_RANGE(3000000, 4, 7, 100000), }; static const unsigned int buck_3_voltages[] = { 950000, 1050000, 1100000, 1117000, 1134000, 1150000, 1167000, 1200000, }; static const unsigned int buck_4_voltages[] = { 1150000, 1200000, 1250000, 1350000, 1700000, 1800000, 1900000, 2000000, }; static const unsigned int buck_5_voltages[] = { 1150000, 1200000, 1250000, 1350000, 1600000, 1700000, 1800000, 1900000, }; static const struct regulator_ops hi6421_ldo_ops; static const struct regulator_ops hi6421_ldo_linear_ops; static const struct regulator_ops hi6421_ldo_linear_range_ops; static const struct regulator_ops hi6421_buck012_ops; static const struct regulator_ops hi6421_buck345_ops; #define HI6421_LDO_ENABLE_TIME (350) /* * _id - LDO id name string * _match - of match name string * v_table - voltage table * vreg - voltage select register * vmask - voltage select mask * ereg - enable register * emask - enable mask * odelay - off/on delay time in uS * ecomask - eco mode mask * ecoamp - eco mode load uppler limit in uA */ #define HI6421_LDO(_id, _match, v_table, vreg, vmask, ereg, emask, \ odelay, ecomask, ecoamp) \ [HI6421_##_id] = { \ .desc = { \ .name = #_id, \ .of_match = of_match_ptr(#_match), \ .regulators_node = of_match_ptr("regulators"), \ .ops = &hi6421_ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .id = HI6421_##_id, \ .owner = THIS_MODULE, \ .n_voltages = ARRAY_SIZE(v_table), \ .volt_table = v_table, \ .vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \ .vsel_mask = vmask, \ .enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \ .enable_mask = emask, \ .enable_time = HI6421_LDO_ENABLE_TIME, \ .off_on_delay = odelay, \ }, \ .mode_mask = ecomask, \ .eco_microamp = ecoamp, \ } /* HI6421 LDO1~3 are linear voltage regulators at fixed uV_step * * _id - LDO id name string * _match - of match name string * _min_uV - minimum voltage supported in uV * n_volt - number of votages available * vstep - voltage increase in each linear step in uV * vreg - voltage select register * vmask - voltage select mask * ereg - enable register * emask - enable mask * odelay - off/on delay time in uS * ecomask - eco mode mask * ecoamp - eco mode load uppler limit in uA */ #define HI6421_LDO_LINEAR(_id, _match, _min_uV, n_volt, vstep, vreg, vmask,\ ereg, emask, odelay, ecomask, ecoamp) \ [HI6421_##_id] = { \ .desc = { \ .name = #_id, \ .of_match = of_match_ptr(#_match), \ .regulators_node = of_match_ptr("regulators"), \ .ops = &hi6421_ldo_linear_ops, \ .type = REGULATOR_VOLTAGE, \ .id = HI6421_##_id, \ .owner = THIS_MODULE, \ .min_uV = _min_uV, \ .n_voltages = n_volt, \ .uV_step = vstep, \ .vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \ .vsel_mask = vmask, \ .enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \ .enable_mask = emask, \ .enable_time = HI6421_LDO_ENABLE_TIME, \ .off_on_delay = odelay, \ }, \ .mode_mask = ecomask, \ .eco_microamp = ecoamp, \ } /* HI6421 LDOAUDIO is a linear voltage regulator with two 4-step ranges * * _id - LDO id name string * _match - of match name string * n_volt - number of votages available * volt_ranges - array of linear_range * vstep - voltage increase in each linear step in uV * vreg - voltage select register * vmask - voltage select mask * ereg - enable register * emask - enable mask * odelay - off/on delay time in uS * ecomask - eco mode mask * ecoamp - eco mode load uppler limit in uA */ #define HI6421_LDO_LINEAR_RANGE(_id, _match, n_volt, volt_ranges, vreg, vmask,\ ereg, emask, odelay, ecomask, ecoamp) \ [HI6421_##_id] = { \ .desc = { \ .name = #_id, \ .of_match = of_match_ptr(#_match), \ .regulators_node = of_match_ptr("regulators"), \ .ops = &hi6421_ldo_linear_range_ops, \ .type = REGULATOR_VOLTAGE, \ .id = HI6421_##_id, \ .owner = THIS_MODULE, \ .n_voltages = n_volt, \ .linear_ranges = volt_ranges, \ .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ .vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \ .vsel_mask = vmask, \ .enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \ .enable_mask = emask, \ .enable_time = HI6421_LDO_ENABLE_TIME, \ .off_on_delay = odelay, \ }, \ .mode_mask = ecomask, \ .eco_microamp = ecoamp, \ } /* HI6421 BUCK0/1/2 are linear voltage regulators at fixed uV_step * * _id - BUCK0/1/2 id name string * _match - of match name string * vreg - voltage select register * vmask - voltage select mask * ereg - enable register * emask - enable mask * sleepmask - mask of sleep mode * etime - enable time * odelay - off/on delay time in uS */ #define HI6421_BUCK012(_id, _match, vreg, vmask, ereg, emask, sleepmask,\ etime, odelay) \ [HI6421_##_id] = { \ .desc = { \ .name = #_id, \ .of_match = of_match_ptr(#_match), \ .regulators_node = of_match_ptr("regulators"), \ .ops = &hi6421_buck012_ops, \ .type = REGULATOR_VOLTAGE, \ .id = HI6421_##_id, \ .owner = THIS_MODULE, \ .min_uV = 700000, \ .n_voltages = 128, \ .uV_step = 7086, \ .vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \ .vsel_mask = vmask, \ .enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \ .enable_mask = emask, \ .enable_time = etime, \ .off_on_delay = odelay, \ }, \ .mode_mask = sleepmask, \ } /* HI6421 BUCK3/4/5 share similar configurations as LDOs, with exception * that it supports SLEEP mode, so has different .ops. * * _id - LDO id name string * _match - of match name string * v_table - voltage table * vreg - voltage select register * vmask - voltage select mask * ereg - enable register * emask - enable mask * odelay - off/on delay time in uS * sleepmask - mask of sleep mode */ #define HI6421_BUCK345(_id, _match, v_table, vreg, vmask, ereg, emask, \ odelay, sleepmask) \ [HI6421_##_id] = { \ .desc = { \ .name = #_id, \ .of_match = of_match_ptr(#_match), \ .regulators_node = of_match_ptr("regulators"), \ .ops = &hi6421_buck345_ops, \ .type = REGULATOR_VOLTAGE, \ .id = HI6421_##_id, \ .owner = THIS_MODULE, \ .n_voltages = ARRAY_SIZE(v_table), \ .volt_table = v_table, \ .vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \ .vsel_mask = vmask, \ .enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \ .enable_mask = emask, \ .enable_time = HI6421_LDO_ENABLE_TIME, \ .off_on_delay = odelay, \ }, \ .mode_mask = sleepmask, \ } /* HI6421 regulator information */ static struct hi6421_regulator_info hi6421_regulator_info[HI6421_NUM_REGULATORS] = { HI6421_LDO(LDO0, hi6421_vout0, ldo_0_voltages, 0x20, 0x07, 0x20, 0x10, 10000, 0x20, 8000), HI6421_LDO_LINEAR(LDO1, hi6421_vout1, 1700000, 4, 100000, 0x21, 0x03, 0x21, 0x10, 10000, 0x20, 5000), HI6421_LDO_LINEAR(LDO2, hi6421_vout2, 1050000, 8, 50000, 0x22, 0x07, 0x22, 0x10, 20000, 0x20, 8000), HI6421_LDO_LINEAR(LDO3, hi6421_vout3, 1050000, 8, 50000, 0x23, 0x07, 0x23, 0x10, 20000, 0x20, 8000), HI6421_LDO(LDO4, hi6421_vout4, ldo_0_voltages, 0x24, 0x07, 0x24, 0x10, 20000, 0x20, 8000), HI6421_LDO(LDO5, hi6421_vout5, ldo_0_voltages, 0x25, 0x07, 0x25, 0x10, 20000, 0x20, 8000), HI6421_LDO(LDO6, hi6421_vout6, ldo_0_voltages, 0x26, 0x07, 0x26, 0x10, 20000, 0x20, 8000), HI6421_LDO(LDO7, hi6421_vout7, ldo_0_voltages, 0x27, 0x07, 0x27, 0x10, 20000, 0x20, 5000), HI6421_LDO(LDO8, hi6421_vout8, ldo_8_voltages, 0x28, 0x07, 0x28, 0x10, 20000, 0x20, 8000), HI6421_LDO(LDO9, hi6421_vout9, ldo_0_voltages, 0x29, 0x07, 0x29, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO10, hi6421_vout10, ldo_0_voltages, 0x2a, 0x07, 0x2a, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO11, hi6421_vout11, ldo_0_voltages, 0x2b, 0x07, 0x2b, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO12, hi6421_vout12, ldo_0_voltages, 0x2c, 0x07, 0x2c, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO13, hi6421_vout13, ldo_0_voltages, 0x2d, 0x07, 0x2d, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO14, hi6421_vout14, ldo_0_voltages, 0x2e, 0x07, 0x2e, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO15, hi6421_vout15, ldo_8_voltages, 0x2f, 0x07, 0x2f, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO16, hi6421_vout16, ldo_0_voltages, 0x30, 0x07, 0x30, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO17, hi6421_vout17, ldo_0_voltages, 0x31, 0x07, 0x31, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO18, hi6421_vout18, ldo_0_voltages, 0x32, 0x07, 0x32, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO19, hi6421_vout19, ldo_0_voltages, 0x33, 0x07, 0x33, 0x10, 40000, 0x20, 8000), HI6421_LDO(LDO20, hi6421_vout20, ldo_0_voltages, 0x34, 0x07, 0x34, 0x10, 40000, 0x20, 8000), HI6421_LDO_LINEAR_RANGE(LDOAUDIO, hi6421_vout_audio, 8, ldo_audio_volt_range, 0x36, 0x70, 0x36, 0x01, 40000, 0x02, 5000), HI6421_BUCK012(BUCK0, hi6421_buck0, 0x0d, 0x7f, 0x0c, 0x01, 0x10, 400, 20000), HI6421_BUCK012(BUCK1, hi6421_buck1, 0x0f, 0x7f, 0x0e, 0x01, 0x10, 400, 20000), HI6421_BUCK012(BUCK2, hi6421_buck2, 0x11, 0x7f, 0x10, 0x01, 0x10, 350, 100), HI6421_BUCK345(BUCK3, hi6421_buck3, buck_3_voltages, 0x13, 0x07, 0x12, 0x01, 20000, 0x10), HI6421_BUCK345(BUCK4, hi6421_buck4, buck_4_voltages, 0x15, 0x07, 0x14, 0x01, 20000, 0x10), HI6421_BUCK345(BUCK5, hi6421_buck5, buck_5_voltages, 0x17, 0x07, 0x16, 0x01, 20000, 0x10), }; static int hi6421_regulator_enable(struct regulator_dev *rdev) { struct hi6421_regulator_pdata *pdata; pdata = dev_get_drvdata(rdev->dev.parent); /* hi6421 spec requires regulator enablement must be serialized: * - Because when BUCK, LDO switching from off to on, it will have * a huge instantaneous current; so you can not turn on two or * more LDO or BUCKs simultaneously, or it may burn the chip. */ mutex_lock(&pdata->lock); /* call regulator regmap helper */ regulator_enable_regmap(rdev); mutex_unlock(&pdata->lock); return 0; } static unsigned int hi6421_regulator_ldo_get_mode(struct regulator_dev *rdev) { struct hi6421_regulator_info *info = rdev_get_drvdata(rdev); u32 reg_val; regmap_read(rdev->regmap, rdev->desc->enable_reg, ®_val); if (reg_val & info->mode_mask) return REGULATOR_MODE_IDLE; return REGULATOR_MODE_NORMAL; } static unsigned int hi6421_regulator_buck_get_mode(struct regulator_dev *rdev) { struct hi6421_regulator_info *info = rdev_get_drvdata(rdev); u32 reg_val; regmap_read(rdev->regmap, rdev->desc->enable_reg, ®_val); if (reg_val & info->mode_mask) return REGULATOR_MODE_STANDBY; return REGULATOR_MODE_NORMAL; } static int hi6421_regulator_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode) { struct hi6421_regulator_info *info = rdev_get_drvdata(rdev); u32 new_mode; switch (mode) { case REGULATOR_MODE_NORMAL: new_mode = 0; break; case REGULATOR_MODE_IDLE: new_mode = info->mode_mask; break; default: return -EINVAL; } /* set mode */ regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, info->mode_mask, new_mode); return 0; } static int hi6421_regulator_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) { struct hi6421_regulator_info *info = rdev_get_drvdata(rdev); u32 new_mode; switch (mode) { case REGULATOR_MODE_NORMAL: new_mode = 0; break; case REGULATOR_MODE_STANDBY: new_mode = info->mode_mask; break; default: return -EINVAL; } /* set mode */ regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, info->mode_mask, new_mode); return 0; } static unsigned int hi6421_regulator_ldo_get_optimum_mode(struct regulator_dev *rdev, int input_uV, int output_uV, int load_uA) { struct hi6421_regulator_info *info = rdev_get_drvdata(rdev); if (load_uA > info->eco_microamp) return REGULATOR_MODE_NORMAL; return REGULATOR_MODE_IDLE; } static const struct regulator_ops hi6421_ldo_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = hi6421_regulator_enable, .disable = regulator_disable_regmap, .list_voltage = regulator_list_voltage_table, .map_voltage = regulator_map_voltage_ascend, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_mode = hi6421_regulator_ldo_get_mode, .set_mode = hi6421_regulator_ldo_set_mode, .get_optimum_mode = hi6421_regulator_ldo_get_optimum_mode, }; static const struct regulator_ops hi6421_ldo_linear_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = hi6421_regulator_enable, .disable = regulator_disable_regmap, .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_mode = hi6421_regulator_ldo_get_mode, .set_mode = hi6421_regulator_ldo_set_mode, .get_optimum_mode = hi6421_regulator_ldo_get_optimum_mode, }; static const struct regulator_ops hi6421_ldo_linear_range_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = hi6421_regulator_enable, .disable = regulator_disable_regmap, .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, .get_mode = hi6421_regulator_ldo_get_mode, .set_mode = hi6421_regulator_ldo_set_mode, .get_optimum_mode = hi6421_regulator_ldo_get_optimum_mode, }; static const struct regulator_ops hi6421_buck012_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = hi6421_regulator_enable, .disable = regulator_disable_regmap, .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_mode = hi6421_regulator_buck_get_mode, .set_mode = hi6421_regulator_buck_set_mode, }; static const struct regulator_ops hi6421_buck345_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = hi6421_regulator_enable, .disable = regulator_disable_regmap, .list_voltage = regulator_list_voltage_table, .map_voltage = regulator_map_voltage_ascend, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_mode = hi6421_regulator_buck_get_mode, .set_mode = hi6421_regulator_buck_set_mode, }; static int hi6421_regulator_probe(struct platform_device *pdev) { struct hi6421_pmic *pmic = dev_get_drvdata(pdev->dev.parent); struct hi6421_regulator_pdata *pdata; struct hi6421_regulator_info *info; struct regulator_config config = { }; struct regulator_dev *rdev; int i; pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; mutex_init(&pdata->lock); platform_set_drvdata(pdev, pdata); for (i = 0; i < ARRAY_SIZE(hi6421_regulator_info); i++) { /* assign per-regulator data */ info = &hi6421_regulator_info[i]; config.dev = pdev->dev.parent; config.driver_data = info; config.regmap = pmic->regmap; rdev = devm_regulator_register(&pdev->dev, &info->desc, &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register regulator %s\n", info->desc.name); return PTR_ERR(rdev); } } return 0; } static const struct platform_device_id hi6421_regulator_table[] = { { .name = "hi6421-regulator" }, {}, }; MODULE_DEVICE_TABLE(platform, hi6421_regulator_table); static struct platform_driver hi6421_regulator_driver = { .id_table = hi6421_regulator_table, .driver = { .name = "hi6421-regulator", }, .probe = hi6421_regulator_probe, }; module_platform_driver(hi6421_regulator_driver); MODULE_AUTHOR("Guodong Xu <guodong.xu@linaro.org>"); MODULE_DESCRIPTION("Hi6421 regulator driver"); MODULE_LICENSE("GPL v2");
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