| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Cyril Chemparathy | 2856 | 93.18% | 1 | 7.14% |
| Axel Lin | 174 | 5.68% | 9 | 64.29% |
| Mark Brown | 27 | 0.88% | 2 | 14.29% |
| Jingoo Han | 8 | 0.26% | 2 | 14.29% |
| Total | 3065 | 14 |
/* * Regulator driver for TPS6524x PMIC * * Copyright (C) 2010 Texas Instruments * * 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 version 2. * * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, * whether express or implied; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/err.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/spi/spi.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #define REG_LDO_SET 0x0 #define LDO_ILIM_MASK 1 /* 0 = 400-800, 1 = 900-1500 */ #define LDO_VSEL_MASK 0x0f #define LDO2_ILIM_SHIFT 12 #define LDO2_VSEL_SHIFT 4 #define LDO1_ILIM_SHIFT 8 #define LDO1_VSEL_SHIFT 0 #define REG_BLOCK_EN 0x1 #define BLOCK_MASK 1 #define BLOCK_LDO1_SHIFT 0 #define BLOCK_LDO2_SHIFT 1 #define BLOCK_LCD_SHIFT 2 #define BLOCK_USB_SHIFT 3 #define REG_DCDC_SET 0x2 #define DCDC_VDCDC_MASK 0x1f #define DCDC_VDCDC1_SHIFT 0 #define DCDC_VDCDC2_SHIFT 5 #define DCDC_VDCDC3_SHIFT 10 #define REG_DCDC_EN 0x3 #define DCDCDCDC_EN_MASK 0x1 #define DCDCDCDC1_EN_SHIFT 0 #define DCDCDCDC1_PG_MSK BIT(1) #define DCDCDCDC2_EN_SHIFT 2 #define DCDCDCDC2_PG_MSK BIT(3) #define DCDCDCDC3_EN_SHIFT 4 #define DCDCDCDC3_PG_MSK BIT(5) #define REG_USB 0x4 #define USB_ILIM_SHIFT 0 #define USB_ILIM_MASK 0x3 #define USB_TSD_SHIFT 2 #define USB_TSD_MASK 0x3 #define USB_TWARN_SHIFT 4 #define USB_TWARN_MASK 0x3 #define USB_IWARN_SD BIT(6) #define USB_FAST_LOOP BIT(7) #define REG_ALARM 0x5 #define ALARM_LDO1 BIT(0) #define ALARM_DCDC1 BIT(1) #define ALARM_DCDC2 BIT(2) #define ALARM_DCDC3 BIT(3) #define ALARM_LDO2 BIT(4) #define ALARM_USB_WARN BIT(5) #define ALARM_USB_ALARM BIT(6) #define ALARM_LCD BIT(9) #define ALARM_TEMP_WARM BIT(10) #define ALARM_TEMP_HOT BIT(11) #define ALARM_NRST BIT(14) #define ALARM_POWERUP BIT(15) #define REG_INT_ENABLE 0x6 #define INT_LDO1 BIT(0) #define INT_DCDC1 BIT(1) #define INT_DCDC2 BIT(2) #define INT_DCDC3 BIT(3) #define INT_LDO2 BIT(4) #define INT_USB_WARN BIT(5) #define INT_USB_ALARM BIT(6) #define INT_LCD BIT(9) #define INT_TEMP_WARM BIT(10) #define INT_TEMP_HOT BIT(11) #define INT_GLOBAL_EN BIT(15) #define REG_INT_STATUS 0x7 #define STATUS_LDO1 BIT(0) #define STATUS_DCDC1 BIT(1) #define STATUS_DCDC2 BIT(2) #define STATUS_DCDC3 BIT(3) #define STATUS_LDO2 BIT(4) #define STATUS_USB_WARN BIT(5) #define STATUS_USB_ALARM BIT(6) #define STATUS_LCD BIT(9) #define STATUS_TEMP_WARM BIT(10) #define STATUS_TEMP_HOT BIT(11) #define REG_SOFTWARE_RESET 0xb #define REG_WRITE_ENABLE 0xd #define REG_REV_ID 0xf #define N_DCDC 3 #define N_LDO 2 #define N_SWITCH 2 #define N_REGULATORS (N_DCDC + N_LDO + N_SWITCH) #define CMD_READ(reg) ((reg) << 6) #define CMD_WRITE(reg) (BIT(5) | (reg) << 6) #define STAT_CLK BIT(3) #define STAT_WRITE BIT(2) #define STAT_INVALID BIT(1) #define STAT_WP BIT(0) struct field { int reg; int shift; int mask; }; struct supply_info { const char *name; int n_voltages; const unsigned int *voltages; int n_ilimsels; const unsigned int *ilimsels; struct field enable, voltage, ilimsel; }; struct tps6524x { struct device *dev; struct spi_device *spi; struct mutex lock; struct regulator_desc desc[N_REGULATORS]; struct regulator_dev *rdev[N_REGULATORS]; }; static int __read_reg(struct tps6524x *hw, int reg) { int error = 0; u16 cmd = CMD_READ(reg), in; u8 status; struct spi_message m; struct spi_transfer t[3]; spi_message_init(&m); memset(t, 0, sizeof(t)); t[0].tx_buf = &cmd; t[0].len = 2; t[0].bits_per_word = 12; spi_message_add_tail(&t[0], &m); t[1].rx_buf = ∈ t[1].len = 2; t[1].bits_per_word = 16; spi_message_add_tail(&t[1], &m); t[2].rx_buf = &status; t[2].len = 1; t[2].bits_per_word = 4; spi_message_add_tail(&t[2], &m); error = spi_sync(hw->spi, &m); if (error < 0) return error; dev_dbg(hw->dev, "read reg %d, data %x, status %x\n", reg, in, status); if (!(status & STAT_CLK) || (status & STAT_WRITE)) return -EIO; if (status & STAT_INVALID) return -EINVAL; return in; } static int read_reg(struct tps6524x *hw, int reg) { int ret; mutex_lock(&hw->lock); ret = __read_reg(hw, reg); mutex_unlock(&hw->lock); return ret; } static int __write_reg(struct tps6524x *hw, int reg, int val) { int error = 0; u16 cmd = CMD_WRITE(reg), out = val; u8 status; struct spi_message m; struct spi_transfer t[3]; spi_message_init(&m); memset(t, 0, sizeof(t)); t[0].tx_buf = &cmd; t[0].len = 2; t[0].bits_per_word = 12; spi_message_add_tail(&t[0], &m); t[1].tx_buf = &out; t[1].len = 2; t[1].bits_per_word = 16; spi_message_add_tail(&t[1], &m); t[2].rx_buf = &status; t[2].len = 1; t[2].bits_per_word = 4; spi_message_add_tail(&t[2], &m); error = spi_sync(hw->spi, &m); if (error < 0) return error; dev_dbg(hw->dev, "wrote reg %d, data %x, status %x\n", reg, out, status); if (!(status & STAT_CLK) || !(status & STAT_WRITE)) return -EIO; if (status & (STAT_INVALID | STAT_WP)) return -EINVAL; return error; } static int __rmw_reg(struct tps6524x *hw, int reg, int mask, int val) { int ret; ret = __read_reg(hw, reg); if (ret < 0) return ret; ret &= ~mask; ret |= val; ret = __write_reg(hw, reg, ret); return (ret < 0) ? ret : 0; } static int rmw_protect(struct tps6524x *hw, int reg, int mask, int val) { int ret; mutex_lock(&hw->lock); ret = __write_reg(hw, REG_WRITE_ENABLE, 1); if (ret) { dev_err(hw->dev, "failed to set write enable\n"); goto error; } ret = __rmw_reg(hw, reg, mask, val); if (ret) dev_err(hw->dev, "failed to rmw register %d\n", reg); ret = __write_reg(hw, REG_WRITE_ENABLE, 0); if (ret) { dev_err(hw->dev, "failed to clear write enable\n"); goto error; } error: mutex_unlock(&hw->lock); return ret; } static int read_field(struct tps6524x *hw, const struct field *field) { int tmp; tmp = read_reg(hw, field->reg); if (tmp < 0) return tmp; return (tmp >> field->shift) & field->mask; } static int write_field(struct tps6524x *hw, const struct field *field, int val) { if (val & ~field->mask) return -EOVERFLOW; return rmw_protect(hw, field->reg, field->mask << field->shift, val << field->shift); } static const unsigned int dcdc1_voltages[] = { 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000, 1525000, 1550000, 1575000, }; static const unsigned int dcdc2_voltages[] = { 1400000, 1450000, 1500000, 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, 2800000, 2850000, 2900000, 2950000, }; static const unsigned int dcdc3_voltages[] = { 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, 2800000, 2850000, 2900000, 2950000, 3000000, 3050000, 3100000, 3150000, 3200000, 3250000, 3300000, 3350000, 3400000, 3450000, 3500000, 3550000, 3600000, }; static const unsigned int ldo1_voltages[] = { 4300000, 4350000, 4400000, 4450000, 4500000, 4550000, 4600000, 4650000, 4700000, 4750000, 4800000, 4850000, 4900000, 4950000, 5000000, 5050000, }; static const unsigned int ldo2_voltages[] = { 1100000, 1150000, 1200000, 1250000, 1300000, 1700000, 1750000, 1800000, 1850000, 1900000, 3150000, 3200000, 3250000, 3300000, 3350000, 3400000, }; static const unsigned int fixed_5000000_voltage[] = { 5000000 }; static const unsigned int ldo_ilimsel[] = { 400000, 1500000 }; static const unsigned int usb_ilimsel[] = { 200000, 400000, 800000, 1000000 }; static const unsigned int fixed_2400000_ilimsel[] = { 2400000 }; static const unsigned int fixed_1200000_ilimsel[] = { 1200000 }; static const unsigned int fixed_400000_ilimsel[] = { 400000 }; #define __MK_FIELD(_reg, _mask, _shift) \ { .reg = (_reg), .mask = (_mask), .shift = (_shift), } static const struct supply_info supply_info[N_REGULATORS] = { { .name = "DCDC1", .n_voltages = ARRAY_SIZE(dcdc1_voltages), .voltages = dcdc1_voltages, .n_ilimsels = ARRAY_SIZE(fixed_2400000_ilimsel), .ilimsels = fixed_2400000_ilimsel, .enable = __MK_FIELD(REG_DCDC_EN, DCDCDCDC_EN_MASK, DCDCDCDC1_EN_SHIFT), .voltage = __MK_FIELD(REG_DCDC_SET, DCDC_VDCDC_MASK, DCDC_VDCDC1_SHIFT), }, { .name = "DCDC2", .n_voltages = ARRAY_SIZE(dcdc2_voltages), .voltages = dcdc2_voltages, .n_ilimsels = ARRAY_SIZE(fixed_1200000_ilimsel), .ilimsels = fixed_1200000_ilimsel, .enable = __MK_FIELD(REG_DCDC_EN, DCDCDCDC_EN_MASK, DCDCDCDC2_EN_SHIFT), .voltage = __MK_FIELD(REG_DCDC_SET, DCDC_VDCDC_MASK, DCDC_VDCDC2_SHIFT), }, { .name = "DCDC3", .n_voltages = ARRAY_SIZE(dcdc3_voltages), .voltages = dcdc3_voltages, .n_ilimsels = ARRAY_SIZE(fixed_1200000_ilimsel), .ilimsels = fixed_1200000_ilimsel, .enable = __MK_FIELD(REG_DCDC_EN, DCDCDCDC_EN_MASK, DCDCDCDC3_EN_SHIFT), .voltage = __MK_FIELD(REG_DCDC_SET, DCDC_VDCDC_MASK, DCDC_VDCDC3_SHIFT), }, { .name = "LDO1", .n_voltages = ARRAY_SIZE(ldo1_voltages), .voltages = ldo1_voltages, .n_ilimsels = ARRAY_SIZE(ldo_ilimsel), .ilimsels = ldo_ilimsel, .enable = __MK_FIELD(REG_BLOCK_EN, BLOCK_MASK, BLOCK_LDO1_SHIFT), .voltage = __MK_FIELD(REG_LDO_SET, LDO_VSEL_MASK, LDO1_VSEL_SHIFT), .ilimsel = __MK_FIELD(REG_LDO_SET, LDO_ILIM_MASK, LDO1_ILIM_SHIFT), }, { .name = "LDO2", .n_voltages = ARRAY_SIZE(ldo2_voltages), .voltages = ldo2_voltages, .n_ilimsels = ARRAY_SIZE(ldo_ilimsel), .ilimsels = ldo_ilimsel, .enable = __MK_FIELD(REG_BLOCK_EN, BLOCK_MASK, BLOCK_LDO2_SHIFT), .voltage = __MK_FIELD(REG_LDO_SET, LDO_VSEL_MASK, LDO2_VSEL_SHIFT), .ilimsel = __MK_FIELD(REG_LDO_SET, LDO_ILIM_MASK, LDO2_ILIM_SHIFT), }, { .name = "USB", .n_voltages = ARRAY_SIZE(fixed_5000000_voltage), .voltages = fixed_5000000_voltage, .n_ilimsels = ARRAY_SIZE(usb_ilimsel), .ilimsels = usb_ilimsel, .enable = __MK_FIELD(REG_BLOCK_EN, BLOCK_MASK, BLOCK_USB_SHIFT), .ilimsel = __MK_FIELD(REG_USB, USB_ILIM_MASK, USB_ILIM_SHIFT), }, { .name = "LCD", .n_voltages = ARRAY_SIZE(fixed_5000000_voltage), .voltages = fixed_5000000_voltage, .n_ilimsels = ARRAY_SIZE(fixed_400000_ilimsel), .ilimsels = fixed_400000_ilimsel, .enable = __MK_FIELD(REG_BLOCK_EN, BLOCK_MASK, BLOCK_LCD_SHIFT), }, }; static int set_voltage_sel(struct regulator_dev *rdev, unsigned selector) { const struct supply_info *info; struct tps6524x *hw; hw = rdev_get_drvdata(rdev); info = &supply_info[rdev_get_id(rdev)]; if (rdev->desc->n_voltages == 1) return -EINVAL; return write_field(hw, &info->voltage, selector); } static int get_voltage_sel(struct regulator_dev *rdev) { const struct supply_info *info; struct tps6524x *hw; int ret; hw = rdev_get_drvdata(rdev); info = &supply_info[rdev_get_id(rdev)]; if (rdev->desc->n_voltages == 1) return 0; ret = read_field(hw, &info->voltage); if (ret < 0) return ret; if (WARN_ON(ret >= info->n_voltages)) return -EIO; return ret; } static int set_current_limit(struct regulator_dev *rdev, int min_uA, int max_uA) { const struct supply_info *info; struct tps6524x *hw; int i; hw = rdev_get_drvdata(rdev); info = &supply_info[rdev_get_id(rdev)]; if (info->n_ilimsels == 1) return -EINVAL; for (i = info->n_ilimsels - 1; i >= 0; i--) { if (min_uA <= info->ilimsels[i] && max_uA >= info->ilimsels[i]) return write_field(hw, &info->ilimsel, i); } return -EINVAL; } static int get_current_limit(struct regulator_dev *rdev) { const struct supply_info *info; struct tps6524x *hw; int ret; hw = rdev_get_drvdata(rdev); info = &supply_info[rdev_get_id(rdev)]; if (info->n_ilimsels == 1) return info->ilimsels[0]; ret = read_field(hw, &info->ilimsel); if (ret < 0) return ret; if (WARN_ON(ret >= info->n_ilimsels)) return -EIO; return info->ilimsels[ret]; } static int enable_supply(struct regulator_dev *rdev) { const struct supply_info *info; struct tps6524x *hw; hw = rdev_get_drvdata(rdev); info = &supply_info[rdev_get_id(rdev)]; return write_field(hw, &info->enable, 1); } static int disable_supply(struct regulator_dev *rdev) { const struct supply_info *info; struct tps6524x *hw; hw = rdev_get_drvdata(rdev); info = &supply_info[rdev_get_id(rdev)]; return write_field(hw, &info->enable, 0); } static int is_supply_enabled(struct regulator_dev *rdev) { const struct supply_info *info; struct tps6524x *hw; hw = rdev_get_drvdata(rdev); info = &supply_info[rdev_get_id(rdev)]; return read_field(hw, &info->enable); } static struct regulator_ops regulator_ops = { .is_enabled = is_supply_enabled, .enable = enable_supply, .disable = disable_supply, .get_voltage_sel = get_voltage_sel, .set_voltage_sel = set_voltage_sel, .list_voltage = regulator_list_voltage_table, .map_voltage = regulator_map_voltage_ascend, .set_current_limit = set_current_limit, .get_current_limit = get_current_limit, }; static int pmic_probe(struct spi_device *spi) { struct tps6524x *hw; struct device *dev = &spi->dev; const struct supply_info *info = supply_info; struct regulator_init_data *init_data; struct regulator_config config = { }; int i; init_data = dev_get_platdata(dev); if (!init_data) { dev_err(dev, "could not find regulator platform data\n"); return -EINVAL; } hw = devm_kzalloc(&spi->dev, sizeof(struct tps6524x), GFP_KERNEL); if (!hw) return -ENOMEM; spi_set_drvdata(spi, hw); memset(hw, 0, sizeof(struct tps6524x)); hw->dev = dev; hw->spi = spi; mutex_init(&hw->lock); for (i = 0; i < N_REGULATORS; i++, info++, init_data++) { hw->desc[i].name = info->name; hw->desc[i].id = i; hw->desc[i].n_voltages = info->n_voltages; hw->desc[i].volt_table = info->voltages; hw->desc[i].ops = ®ulator_ops; hw->desc[i].type = REGULATOR_VOLTAGE; hw->desc[i].owner = THIS_MODULE; config.dev = dev; config.init_data = init_data; config.driver_data = hw; hw->rdev[i] = devm_regulator_register(dev, &hw->desc[i], &config); if (IS_ERR(hw->rdev[i])) return PTR_ERR(hw->rdev[i]); } return 0; } static struct spi_driver pmic_driver = { .probe = pmic_probe, .driver = { .name = "tps6524x", }, }; module_spi_driver(pmic_driver); MODULE_DESCRIPTION("TPS6524X PMIC Driver"); MODULE_AUTHOR("Cyril Chemparathy"); MODULE_LICENSE("GPL"); MODULE_ALIAS("spi:tps6524x");
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