| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Unknown | 1535 | 100.00% | 1 | 100.00% |
| Total | 1535 | 1 |
// SPDX-License-Identifier: GPL-2.0+ // documentation of this device is available at // https://www.nxp.com/docs/en/data-sheet/PF5300.pdf #include <linux/delay.h> #include <linux/err.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> #include <linux/regulator/consumer.h> #include <linux/regulator/machine.h> #include <linux/regulator/of_regulator.h> /* registers */ #define PF530X_DEVICEID 0x00 #define PF530X_REV 0x01 #define PF530X_EMREV 0x02 #define PF530X_PROGID 0x03 #define PF530X_CONFIG1 0x04 #define PF530X_INT_STATUS1 0x05 #define PF530X_INT_SENSE1 0x06 #define PF530X_INT_STATUS2 0x07 #define PF530X_INT_SENSE2 0x08 #define PF530X_BIST_STAT1 0x09 #define PF530X_BIST_CTRL 0x0a #define PF530X_STATE 0x0b #define PF530X_STATE_CTRL 0x0c #define PF530X_SW1_VOLT 0x0d #define PF530X_SW1_STBY_VOLT 0x0e #define PF530X_SW1_CTRL1 0x0f #define PF530X_SW1_CTRL2 0x10 #define PF530X_CLK_CTRL 0x11 #define PF530X_SEQ_CTRL1 0x12 #define PF530X_SEQ_CTRL2 0x13 #define PF530X_RANDOM_CHK 0x14 #define PF530X_RANDOM_GEN 0x15 #define PF530X_WD_CTRL1 0x16 #define PF530X_WD_SEED 0x17 #define PF530X_WD_ANSWER 0x18 #define PF530X_FLT_CNT1 0x19 #define PF530X_FLT_CNT2 0x1a #define PF530X_OTP_MODE 0x2f enum pf530x_states { PF530X_STATE_POF, PF530X_STATE_FUSE_LOAD, PF530X_STATE_LP_OFF, PF530X_STATE_SELF_TEST, PF530X_STATE_POWER_UP, PF530X_STATE_INIT, PF530X_STATE_IO_RELEASE, PF530X_STATE_RUN, PF530X_STATE_STANDBY, PF530X_STATE_FAULT, PF530X_STATE_FAILSAFE, PF530X_STATE_POWER_DOWN, PF530X_STATE_2MS_SELFTEST_RETRY, PF530X_STATE_OFF_DLY, }; #define PF530_FAM 0x50 enum pf530x_devid { PF5300 = 0x3, PF5301 = 0x4, PF5302 = 0x5, }; #define PF530x_FAM 0x50 #define PF530x_DEVICE_FAM_MASK GENMASK(7, 4) #define PF530x_DEVICE_ID_MASK GENMASK(3, 0) #define PF530x_STATE_MASK GENMASK(3, 0) #define PF530x_STATE_RUN 0x07 #define PF530x_STATE_STANDBY 0x08 #define PF530x_STATE_LP_OFF 0x02 #define PF530X_OTP_STBY_MODE GENMASK(3, 2) #define PF530X_OTP_RUN_MODE GENMASK(1, 0) #define PF530X_INT_STATUS_OV BIT(1) #define PF530X_INT_STATUS_UV BIT(2) #define PF530X_INT_STATUS_ILIM BIT(3) #define SW1_ILIM_S BIT(0) #define VMON_UV_S BIT(1) #define VMON_OV_S BIT(2) #define VIN_OVLO_S BIT(3) #define BG_ERR_S BIT(6) #define THERM_155_S BIT(3) #define THERM_140_S BIT(2) #define THERM_125_S BIT(1) #define THERM_110_S BIT(0) struct pf530x_chip { struct regmap *regmap; struct device *dev; }; static const struct regmap_config pf530x_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = PF530X_OTP_MODE, .cache_type = REGCACHE_MAPLE, }; static int pf530x_get_status(struct regulator_dev *rdev) { unsigned int state; int ret; ret = regmap_read(rdev->regmap, PF530X_INT_SENSE1, &state); if (ret != 0) return ret; if ((state & (BG_ERR_S | SW1_ILIM_S | VMON_UV_S | VMON_OV_S | VIN_OVLO_S)) != 0) return REGULATOR_STATUS_ERROR; // no errors, check if what non-error state we're in ret = regmap_read(rdev->regmap, PF530X_STATE, &state); if (ret != 0) return ret; state &= PF530x_STATE_MASK; switch (state) { case PF530x_STATE_RUN: ret = REGULATOR_STATUS_NORMAL; break; case PF530x_STATE_STANDBY: ret = REGULATOR_STATUS_STANDBY; break; case PF530x_STATE_LP_OFF: ret = REGULATOR_STATUS_OFF; break; default: ret = REGULATOR_STATUS_ERROR; break; } return ret; } static int pf530x_get_error_flags(struct regulator_dev *rdev, unsigned int *flags) { unsigned int status; int ret; ret = regmap_read(rdev->regmap, PF530X_INT_STATUS1, &status); if (ret != 0) return ret; *flags = 0; if (status & PF530X_INT_STATUS_OV) *flags |= REGULATOR_ERROR_OVER_VOLTAGE_WARN; if (status & PF530X_INT_STATUS_UV) *flags |= REGULATOR_ERROR_UNDER_VOLTAGE; if (status & PF530X_INT_STATUS_ILIM) *flags |= REGULATOR_ERROR_OVER_CURRENT; ret = regmap_read(rdev->regmap, PF530X_INT_SENSE2, &status); if (ret != 0) return ret; if ((status & (THERM_155_S | THERM_140_S | THERM_125_S | THERM_110_S)) != 0) *flags |= REGULATOR_ERROR_OVER_TEMP_WARN; return 0; } static const struct regulator_ops pf530x_regulator_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .map_voltage = regulator_map_voltage_linear_range, .list_voltage = regulator_list_voltage_linear_range, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .get_status = pf530x_get_status, .get_error_flags = pf530x_get_error_flags, .set_bypass = regulator_set_bypass_regmap, .get_bypass = regulator_get_bypass_regmap, }; static const struct linear_range vrange = REGULATOR_LINEAR_RANGE(500000, 0, 140, 5000); static const struct regulator_desc pf530x_reg_desc = { .name = "SW1", .ops = &pf530x_regulator_ops, .linear_ranges = &vrange, .n_linear_ranges = 1, .type = REGULATOR_VOLTAGE, .id = 0, .owner = THIS_MODULE, .vsel_reg = PF530X_SW1_VOLT, .vsel_mask = 0xFF, .bypass_reg = PF530X_SW1_CTRL2, .bypass_mask = 0x07, .bypass_val_on = 0x07, .bypass_val_off = 0x00, .enable_reg = PF530X_SW1_CTRL1, .enable_mask = GENMASK(5, 2), .enable_val = GENMASK(5, 2), .disable_val = 0, }; static int pf530x_identify(struct pf530x_chip *chip) { unsigned int value; u8 dev_fam, dev_id, full_layer_rev, metal_layer_rev, prog_idh, prog_idl, emrev; const char *name = NULL; int ret; ret = regmap_read(chip->regmap, PF530X_DEVICEID, &value); if (ret) { dev_err(chip->dev, "failed to read chip family\n"); return ret; } dev_fam = value & PF530x_DEVICE_FAM_MASK; switch (dev_fam) { case PF530x_FAM: break; default: dev_err(chip->dev, "Chip 0x%x is not from PF530X family\n", dev_fam); return ret; } dev_id = value & PF530x_DEVICE_ID_MASK; switch (dev_id) { case PF5300: name = "PF5300"; break; case PF5301: name = "PF5301"; break; case PF5302: name = "PF5302"; break; default: dev_err(chip->dev, "Unknown pf530x device id 0x%x\n", dev_id); return -ENODEV; } ret = regmap_read(chip->regmap, PF530X_REV, &value); if (ret) { dev_err(chip->dev, "failed to read chip rev\n"); return ret; } full_layer_rev = ((value & 0xF0) == 0) ? '0' : ((((value & 0xF0) >> 4) - 1) + 'A'); metal_layer_rev = value & 0xF; ret = regmap_read(chip->regmap, PF530X_EMREV, &value); if (ret) { dev_err(chip->dev, "failed to read chip emrev register\n"); return ret; } prog_idh = (value >> 4) + 'A'; // prog_idh skips 'O', per page 96 of the datasheet if (prog_idh >= 'O') prog_idh += 1; emrev = value & 0x7; ret = regmap_read(chip->regmap, PF530X_PROGID, &value); if (ret) { dev_err(chip->dev, "failed to read chip progid register\n"); return ret; } if (value >= 0x22) { dev_err(chip->dev, "invalid value for progid register\n"); return -ENODEV; } else if (value < 10) { prog_idl = value + '0'; } else { prog_idl = (value - 10) + 'A'; // prog_idh skips 'O', per page 97 of the datasheet if (prog_idl >= 'O') prog_idl += 1; } dev_info(chip->dev, "%s Regulator found (Rev %c%d ProgID %c%c EMREV %x).\n", name, full_layer_rev, metal_layer_rev, prog_idh, prog_idl, emrev); return 0; } static int pf530x_i2c_probe(struct i2c_client *client) { struct regulator_config config = { NULL, }; struct pf530x_chip *chip; int ret; struct regulator_dev *rdev; struct regulator_init_data *init_data; chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); if (!chip) return -ENOMEM; i2c_set_clientdata(client, chip); chip->dev = &client->dev; chip->regmap = devm_regmap_init_i2c(client, &pf530x_regmap_config); if (IS_ERR(chip->regmap)) { ret = PTR_ERR(chip->regmap); dev_err(&client->dev, "regmap allocation failed with err %d\n", ret); return ret; } ret = pf530x_identify(chip); if (ret) return ret; init_data = of_get_regulator_init_data(chip->dev, chip->dev->of_node, &pf530x_reg_desc); if (!init_data) return -ENODATA; config.dev = chip->dev; config.of_node = chip->dev->of_node; config.regmap = chip->regmap; config.init_data = init_data; // the config parameter gets copied, it's ok to pass a pointer on the stack here rdev = devm_regulator_register(&client->dev, &pf530x_reg_desc, &config); if (IS_ERR(rdev)) { dev_err(&client->dev, "failed to register %s regulator\n", pf530x_reg_desc.name); return PTR_ERR(rdev); } return 0; } static const struct of_device_id pf530x_dt_ids[] = { { .compatible = "nxp,pf5300",}, { } }; MODULE_DEVICE_TABLE(of, pf530x_dt_ids); static const struct i2c_device_id pf530x_i2c_id[] = { { "pf5300", 0 }, { "pf5301", 0 }, { "pf5302", 0 }, {}, }; MODULE_DEVICE_TABLE(i2c, pf530x_i2c_id); static struct i2c_driver pf530x_regulator_driver = { .id_table = pf530x_i2c_id, .driver = { .name = "pf530x", .of_match_table = pf530x_dt_ids, }, .probe = pf530x_i2c_probe, }; module_i2c_driver(pf530x_regulator_driver); MODULE_AUTHOR("Woodrow Douglass <wdouglass@carnegierobotics.com>"); MODULE_DESCRIPTION("Regulator Driver for NXP's PF5300/PF5301/PF5302 PMIC"); MODULE_LICENSE("GPL");
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