// SPDX-License-Identifier: GPL-2.0+ // // Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved. #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define PFUZE_FLAG_DISABLE_SW BIT(1) #define PFUZE_NUMREGS 128 #define PFUZE100_VOL_OFFSET 0 #define PFUZE100_STANDBY_OFFSET 1 #define PFUZE100_MODE_OFFSET 3 #define PFUZE100_CONF_OFFSET 4 #define PFUZE100_DEVICEID 0x0 #define PFUZE100_REVID 0x3 #define PFUZE100_FABID 0x4 #define PFUZE100_COINVOL 0x1a #define PFUZE100_SW1ABVOL 0x20 #define PFUZE100_SW1CVOL 0x2e #define PFUZE100_SW2VOL 0x35 #define PFUZE100_SW3AVOL 0x3c #define PFUZE100_SW3BVOL 0x43 #define PFUZE100_SW4VOL 0x4a #define PFUZE100_SWBSTCON1 0x66 #define PFUZE100_VREFDDRCON 0x6a #define PFUZE100_VSNVSVOL 0x6b #define PFUZE100_VGEN1VOL 0x6c #define PFUZE100_VGEN2VOL 0x6d #define PFUZE100_VGEN3VOL 0x6e #define PFUZE100_VGEN4VOL 0x6f #define PFUZE100_VGEN5VOL 0x70 #define PFUZE100_VGEN6VOL 0x71 enum chips { PFUZE100, PFUZE200, PFUZE3000 = 3, PFUZE3001 = 0x31, }; struct pfuze_regulator { struct regulator_desc desc; unsigned char stby_reg; unsigned char stby_mask; bool sw_reg; }; struct pfuze_chip { int chip_id; int flags; struct regmap *regmap; struct device *dev; struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR]; struct regulator_dev *regulators[PFUZE100_MAX_REGULATOR]; struct pfuze_regulator *pfuze_regulators; }; static const int pfuze100_swbst[] = { 5000000, 5050000, 5100000, 5150000, }; static const int pfuze100_vsnvs[] = { 1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000, }; static const int pfuze100_coin[] = { 2500000, 2700000, 2800000, 2900000, 3000000, 3100000, 3200000, 3300000, }; static const int pfuze3000_sw1a[] = { 700000, 725000, 750000, 775000, 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, 1800000, 3300000, }; static const int pfuze3000_sw2lo[] = { 1500000, 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, }; static const int pfuze3000_sw2hi[] = { 2500000, 2800000, 2850000, 3000000, 3100000, 3150000, 3200000, 3300000, }; static const struct i2c_device_id pfuze_device_id[] = { {.name = "pfuze100", .driver_data = PFUZE100}, {.name = "pfuze200", .driver_data = PFUZE200}, {.name = "pfuze3000", .driver_data = PFUZE3000}, {.name = "pfuze3001", .driver_data = PFUZE3001}, { } }; MODULE_DEVICE_TABLE(i2c, pfuze_device_id); static const struct of_device_id pfuze_dt_ids[] = { { .compatible = "fsl,pfuze100", .data = (void *)PFUZE100}, { .compatible = "fsl,pfuze200", .data = (void *)PFUZE200}, { .compatible = "fsl,pfuze3000", .data = (void *)PFUZE3000}, { .compatible = "fsl,pfuze3001", .data = (void *)PFUZE3001}, { } }; MODULE_DEVICE_TABLE(of, pfuze_dt_ids); static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) { struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev); int id = rdev_get_id(rdev); bool reg_has_ramp_delay; unsigned int ramp_bits; int ret; switch (pfuze100->chip_id) { case PFUZE3001: /* no dynamic voltage scaling for PF3001 */ reg_has_ramp_delay = false; break; case PFUZE3000: reg_has_ramp_delay = (id < PFUZE3000_SWBST); break; case PFUZE200: reg_has_ramp_delay = (id < PFUZE200_SWBST); break; case PFUZE100: default: reg_has_ramp_delay = (id < PFUZE100_SWBST); break; } if (reg_has_ramp_delay) { ramp_delay = 12500 / ramp_delay; ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3); ret = regmap_update_bits(pfuze100->regmap, rdev->desc->vsel_reg + 4, 0xc0, ramp_bits << 6); if (ret < 0) dev_err(pfuze100->dev, "ramp failed, err %d\n", ret); } else { ret = -EACCES; } return ret; } static const struct regulator_ops pfuze100_ldo_regulator_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_linear, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, }; static const struct regulator_ops pfuze100_fixed_regulator_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_linear, }; static const struct regulator_ops pfuze100_sw_regulator_ops = { .list_voltage = regulator_list_voltage_linear, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, .set_ramp_delay = pfuze100_set_ramp_delay, }; static const struct regulator_ops pfuze100_sw_disable_regulator_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_linear, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, .set_ramp_delay = pfuze100_set_ramp_delay, }; static const struct regulator_ops pfuze100_swb_regulator_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_table, .map_voltage = regulator_map_voltage_ascend, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, }; static const struct regulator_ops pfuze3000_sw_regulator_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_table, .map_voltage = regulator_map_voltage_ascend, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, .set_ramp_delay = pfuze100_set_ramp_delay, }; #define PFUZE100_FIXED_REG(_chip, _name, base, voltage) \ [_chip ## _ ## _name] = { \ .desc = { \ .name = #_name, \ .n_voltages = 1, \ .ops = &pfuze100_fixed_regulator_ops, \ .type = REGULATOR_VOLTAGE, \ .id = _chip ## _ ## _name, \ .owner = THIS_MODULE, \ .min_uV = (voltage), \ .enable_reg = (base), \ .enable_mask = 0x10, \ }, \ } #define PFUZE100_SW_REG(_chip, _name, base, min, max, step) \ [_chip ## _ ## _name] = { \ .desc = { \ .name = #_name,\ .n_voltages = ((max) - (min)) / (step) + 1, \ .ops = &pfuze100_sw_regulator_ops, \ .type = REGULATOR_VOLTAGE, \ .id = _chip ## _ ## _name, \ .owner = THIS_MODULE, \ .min_uV = (min), \ .uV_step = (step), \ .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \ .vsel_mask = 0x3f, \ .enable_reg = (base) + PFUZE100_MODE_OFFSET, \ .enable_mask = 0xf, \ }, \ .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \ .stby_mask = 0x3f, \ .sw_reg = true, \ } #define PFUZE100_SWB_REG(_chip, _name, base, mask, voltages) \ [_chip ## _ ## _name] = { \ .desc = { \ .name = #_name, \ .n_voltages = ARRAY_SIZE(voltages), \ .ops = &pfuze100_swb_regulator_ops, \ .type = REGULATOR_VOLTAGE, \ .id = _chip ## _ ## _name, \ .owner = THIS_MODULE, \ .volt_table = voltages, \ .vsel_reg = (base), \ .vsel_mask = (mask), \ .enable_reg = (base), \ .enable_mask = 0x48, \ }, \ } #define PFUZE100_VGEN_REG(_chip, _name, base, min, max, step) \ [_chip ## _ ## _name] = { \ .desc = { \ .name = #_name, \ .n_voltages = ((max) - (min)) / (step) + 1, \ .ops = &pfuze100_ldo_regulator_ops, \ .type = REGULATOR_VOLTAGE, \ .id = _chip ## _ ## _name, \ .owner = THIS_MODULE, \ .min_uV = (min), \ .uV_step = (step), \ .vsel_reg = (base), \ .vsel_mask = 0xf, \ .enable_reg = (base), \ .enable_mask = 0x10, \ }, \ .stby_reg = (base), \ .stby_mask = 0x20, \ } #define PFUZE100_COIN_REG(_chip, _name, base, mask, voltages) \ [_chip ## _ ## _name] = { \ .desc = { \ .name = #_name, \ .n_voltages = ARRAY_SIZE(voltages), \ .ops = &pfuze100_swb_regulator_ops, \ .type = REGULATOR_VOLTAGE, \ .id = _chip ## _ ## _name, \ .owner = THIS_MODULE, \ .volt_table = voltages, \ .vsel_reg = (base), \ .vsel_mask = (mask), \ .enable_reg = (base), \ .enable_mask = 0x8, \ }, \ } #define PFUZE3000_VCC_REG(_chip, _name, base, min, max, step) { \ .desc = { \ .name = #_name, \ .n_voltages = ((max) - (min)) / (step) + 1, \ .ops = &pfuze100_ldo_regulator_ops, \ .type = REGULATOR_VOLTAGE, \ .id = _chip ## _ ## _name, \ .owner = THIS_MODULE, \ .min_uV = (min), \ .uV_step = (step), \ .vsel_reg = (base), \ .vsel_mask = 0x3, \ .enable_reg = (base), \ .enable_mask = 0x10, \ }, \ .stby_reg = (base), \ .stby_mask = 0x20, \ } /* No linar case for the some switches of PFUZE3000 */ #define PFUZE3000_SW_REG(_chip, _name, base, mask, voltages) \ [_chip ## _ ## _name] = { \ .desc = { \ .name = #_name, \ .n_voltages = ARRAY_SIZE(voltages), \ .ops = &pfuze3000_sw_regulator_ops, \ .type = REGULATOR_VOLTAGE, \ .id = _chip ## _ ## _name, \ .owner = THIS_MODULE, \ .volt_table = voltages, \ .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \ .vsel_mask = (mask), \ .enable_reg = (base) + PFUZE100_MODE_OFFSET, \ .enable_mask = 0xf, \ .enable_val = 0x8, \ .enable_time = 500, \ }, \ .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \ .stby_mask = (mask), \ .sw_reg = true, \ } #define PFUZE3000_SW3_REG(_chip, _name, base, min, max, step) { \ .desc = { \ .name = #_name,\ .n_voltages = ((max) - (min)) / (step) + 1, \ .ops = &pfuze100_sw_regulator_ops, \ .type = REGULATOR_VOLTAGE, \ .id = _chip ## _ ## _name, \ .owner = THIS_MODULE, \ .min_uV = (min), \ .uV_step = (step), \ .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \ .vsel_mask = 0xf, \ }, \ .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \ .stby_mask = 0xf, \ } /* PFUZE100 */ static struct pfuze_regulator pfuze100_regulators[] = { PFUZE100_SW_REG(PFUZE100, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000), PFUZE100_SW_REG(PFUZE100, SW1C, PFUZE100_SW1CVOL, 300000, 1875000, 25000), PFUZE100_SW_REG(PFUZE100, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000), PFUZE100_SW_REG(PFUZE100, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000), PFUZE100_SW_REG(PFUZE100, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000), PFUZE100_SW_REG(PFUZE100, SW4, PFUZE100_SW4VOL, 400000, 1975000, 25000), PFUZE100_SWB_REG(PFUZE100, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst), PFUZE100_SWB_REG(PFUZE100, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), PFUZE100_FIXED_REG(PFUZE100, VREFDDR, PFUZE100_VREFDDRCON, 750000), PFUZE100_VGEN_REG(PFUZE100, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000), PFUZE100_VGEN_REG(PFUZE100, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), PFUZE100_VGEN_REG(PFUZE100, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000), PFUZE100_VGEN_REG(PFUZE100, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000), PFUZE100_VGEN_REG(PFUZE100, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), PFUZE100_VGEN_REG(PFUZE100, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), }; static struct pfuze_regulator pfuze200_regulators[] = { PFUZE100_SW_REG(PFUZE200, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000), PFUZE100_SW_REG(PFUZE200, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000), PFUZE100_SW_REG(PFUZE200, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000), PFUZE100_SW_REG(PFUZE200, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000), PFUZE100_SWB_REG(PFUZE200, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst), PFUZE100_SWB_REG(PFUZE200, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), PFUZE100_FIXED_REG(PFUZE200, VREFDDR, PFUZE100_VREFDDRCON, 750000), PFUZE100_VGEN_REG(PFUZE200, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000), PFUZE100_VGEN_REG(PFUZE200, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), PFUZE100_VGEN_REG(PFUZE200, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000), PFUZE100_VGEN_REG(PFUZE200, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000), PFUZE100_VGEN_REG(PFUZE200, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), PFUZE100_VGEN_REG(PFUZE200, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), PFUZE100_COIN_REG(PFUZE200, COIN, PFUZE100_COINVOL, 0x7, pfuze100_coin), }; static struct pfuze_regulator pfuze3000_regulators[] = { PFUZE3000_SW_REG(PFUZE3000, SW1A, PFUZE100_SW1ABVOL, 0x1f, pfuze3000_sw1a), PFUZE100_SW_REG(PFUZE3000, SW1B, PFUZE100_SW1CVOL, 700000, 1475000, 25000), PFUZE3000_SW_REG(PFUZE3000, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo), PFUZE3000_SW3_REG(PFUZE3000, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000), PFUZE100_SWB_REG(PFUZE3000, SWBST, PFUZE100_SWBSTCON1, 0x3, pfuze100_swbst), PFUZE100_SWB_REG(PFUZE3000, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), PFUZE100_FIXED_REG(PFUZE3000, VREFDDR, PFUZE100_VREFDDRCON, 750000), PFUZE100_VGEN_REG(PFUZE3000, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000), PFUZE100_VGEN_REG(PFUZE3000, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), PFUZE3000_VCC_REG(PFUZE3000, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000), PFUZE3000_VCC_REG(PFUZE3000, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000), PFUZE100_VGEN_REG(PFUZE3000, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), PFUZE100_VGEN_REG(PFUZE3000, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), }; static struct pfuze_regulator pfuze3001_regulators[] = { PFUZE3000_SW_REG(PFUZE3001, SW1, PFUZE100_SW1ABVOL, 0x1f, pfuze3000_sw1a), PFUZE3000_SW_REG(PFUZE3001, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo), PFUZE3000_SW3_REG(PFUZE3001, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000), PFUZE100_SWB_REG(PFUZE3001, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), PFUZE100_VGEN_REG(PFUZE3001, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000), PFUZE100_VGEN_REG(PFUZE3001, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), PFUZE3000_VCC_REG(PFUZE3001, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000), PFUZE3000_VCC_REG(PFUZE3001, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000), PFUZE100_VGEN_REG(PFUZE3001, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), PFUZE100_VGEN_REG(PFUZE3001, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), }; #ifdef CONFIG_OF /* PFUZE100 */ static struct of_regulator_match pfuze100_matches[] = { { .name = "sw1ab", }, { .name = "sw1c", }, { .name = "sw2", }, { .name = "sw3a", }, { .name = "sw3b", }, { .name = "sw4", }, { .name = "swbst", }, { .name = "vsnvs", }, { .name = "vrefddr", }, { .name = "vgen1", }, { .name = "vgen2", }, { .name = "vgen3", }, { .name = "vgen4", }, { .name = "vgen5", }, { .name = "vgen6", }, }; /* PFUZE200 */ static struct of_regulator_match pfuze200_matches[] = { { .name = "sw1ab", }, { .name = "sw2", }, { .name = "sw3a", }, { .name = "sw3b", }, { .name = "swbst", }, { .name = "vsnvs", }, { .name = "vrefddr", }, { .name = "vgen1", }, { .name = "vgen2", }, { .name = "vgen3", }, { .name = "vgen4", }, { .name = "vgen5", }, { .name = "vgen6", }, { .name = "coin", }, }; /* PFUZE3000 */ static struct of_regulator_match pfuze3000_matches[] = { { .name = "sw1a", }, { .name = "sw1b", }, { .name = "sw2", }, { .name = "sw3", }, { .name = "swbst", }, { .name = "vsnvs", }, { .name = "vrefddr", }, { .name = "vldo1", }, { .name = "vldo2", }, { .name = "vccsd", }, { .name = "v33", }, { .name = "vldo3", }, { .name = "vldo4", }, }; /* PFUZE3001 */ static struct of_regulator_match pfuze3001_matches[] = { { .name = "sw1", }, { .name = "sw2", }, { .name = "sw3", }, { .name = "vsnvs", }, { .name = "vldo1", }, { .name = "vldo2", }, { .name = "vccsd", }, { .name = "v33", }, { .name = "vldo3", }, { .name = "vldo4", }, }; static struct of_regulator_match *pfuze_matches; static int pfuze_parse_regulators_dt(struct pfuze_chip *chip) { struct device *dev = chip->dev; struct device_node *np, *parent; int ret; np = of_node_get(dev->of_node); if (!np) return -EINVAL; if (of_property_read_bool(np, "fsl,pfuze-support-disable-sw")) chip->flags |= PFUZE_FLAG_DISABLE_SW; parent = of_get_child_by_name(np, "regulators"); if (!parent) { dev_err(dev, "regulators node not found\n"); return -EINVAL; } switch (chip->chip_id) { case PFUZE3001: pfuze_matches = pfuze3001_matches; ret = of_regulator_match(dev, parent, pfuze3001_matches, ARRAY_SIZE(pfuze3001_matches)); break; case PFUZE3000: pfuze_matches = pfuze3000_matches; ret = of_regulator_match(dev, parent, pfuze3000_matches, ARRAY_SIZE(pfuze3000_matches)); break; case PFUZE200: pfuze_matches = pfuze200_matches; ret = of_regulator_match(dev, parent, pfuze200_matches, ARRAY_SIZE(pfuze200_matches)); break; case PFUZE100: default: pfuze_matches = pfuze100_matches; ret = of_regulator_match(dev, parent, pfuze100_matches, ARRAY_SIZE(pfuze100_matches)); break; } of_node_put(parent); if (ret < 0) { dev_err(dev, "Error parsing regulator init data: %d\n", ret); return ret; } return 0; } static inline struct regulator_init_data *match_init_data(int index) { return pfuze_matches[index].init_data; } static inline struct device_node *match_of_node(int index) { return pfuze_matches[index].of_node; } #else static int pfuze_parse_regulators_dt(struct pfuze_chip *chip) { return 0; } static inline struct regulator_init_data *match_init_data(int index) { return NULL; } static inline struct device_node *match_of_node(int index) { return NULL; } #endif static int pfuze_identify(struct pfuze_chip *pfuze_chip) { unsigned int value; int ret; ret = regmap_read(pfuze_chip->regmap, PFUZE100_DEVICEID, &value); if (ret) return ret; if (((value & 0x0f) == 0x8) && (pfuze_chip->chip_id == PFUZE100)) { /* * Freescale misprogrammed 1-3% of parts prior to week 8 of 2013 * as ID=8 in PFUZE100 */ dev_info(pfuze_chip->dev, "Assuming misprogrammed ID=0x8"); } else if ((value & 0x0f) != pfuze_chip->chip_id && (value & 0xf0) >> 4 != pfuze_chip->chip_id && (value != pfuze_chip->chip_id)) { /* device id NOT match with your setting */ dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value); return -ENODEV; } ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value); if (ret) return ret; dev_info(pfuze_chip->dev, "Full layer: %x, Metal layer: %x\n", (value & 0xf0) >> 4, value & 0x0f); ret = regmap_read(pfuze_chip->regmap, PFUZE100_FABID, &value); if (ret) return ret; dev_info(pfuze_chip->dev, "FAB: %x, FIN: %x\n", (value & 0xc) >> 2, value & 0x3); return 0; } static const struct regmap_config pfuze_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = PFUZE_NUMREGS - 1, .cache_type = REGCACHE_RBTREE, }; static int pfuze100_regulator_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct pfuze_chip *pfuze_chip; struct pfuze_regulator_platform_data *pdata = dev_get_platdata(&client->dev); struct regulator_config config = { }; int i, ret; const struct of_device_id *match; u32 regulator_num; u32 sw_check_start, sw_check_end, sw_hi = 0x40; pfuze_chip = devm_kzalloc(&client->dev, sizeof(*pfuze_chip), GFP_KERNEL); if (!pfuze_chip) return -ENOMEM; if (client->dev.of_node) { match = of_match_device(of_match_ptr(pfuze_dt_ids), &client->dev); if (!match) { dev_err(&client->dev, "Error: No device match found\n"); return -ENODEV; } pfuze_chip->chip_id = (int)(long)match->data; } else if (id) { pfuze_chip->chip_id = id->driver_data; } else { dev_err(&client->dev, "No dts match or id table match found\n"); return -ENODEV; } i2c_set_clientdata(client, pfuze_chip); pfuze_chip->dev = &client->dev; pfuze_chip->regmap = devm_regmap_init_i2c(client, &pfuze_regmap_config); if (IS_ERR(pfuze_chip->regmap)) { ret = PTR_ERR(pfuze_chip->regmap); dev_err(&client->dev, "regmap allocation failed with err %d\n", ret); return ret; } ret = pfuze_identify(pfuze_chip); if (ret) { dev_err(&client->dev, "unrecognized pfuze chip ID!\n"); return ret; } /* use the right regulators after identify the right device */ switch (pfuze_chip->chip_id) { case PFUZE3001: pfuze_chip->pfuze_regulators = pfuze3001_regulators; regulator_num = ARRAY_SIZE(pfuze3001_regulators); sw_check_start = PFUZE3001_SW2; sw_check_end = PFUZE3001_SW2; sw_hi = 1 << 3; break; case PFUZE3000: pfuze_chip->pfuze_regulators = pfuze3000_regulators; regulator_num = ARRAY_SIZE(pfuze3000_regulators); sw_check_start = PFUZE3000_SW2; sw_check_end = PFUZE3000_SW2; sw_hi = 1 << 3; break; case PFUZE200: pfuze_chip->pfuze_regulators = pfuze200_regulators; regulator_num = ARRAY_SIZE(pfuze200_regulators); sw_check_start = PFUZE200_SW2; sw_check_end = PFUZE200_SW3B; break; case PFUZE100: default: pfuze_chip->pfuze_regulators = pfuze100_regulators; regulator_num = ARRAY_SIZE(pfuze100_regulators); sw_check_start = PFUZE100_SW2; sw_check_end = PFUZE100_SW4; break; } dev_info(&client->dev, "pfuze%s found.\n", (pfuze_chip->chip_id == PFUZE100) ? "100" : (((pfuze_chip->chip_id == PFUZE200) ? "200" : ((pfuze_chip->chip_id == PFUZE3000) ? "3000" : "3001")))); memcpy(pfuze_chip->regulator_descs, pfuze_chip->pfuze_regulators, sizeof(pfuze_chip->regulator_descs)); ret = pfuze_parse_regulators_dt(pfuze_chip); if (ret) return ret; for (i = 0; i < regulator_num; i++) { struct regulator_init_data *init_data; struct regulator_desc *desc; int val; desc = &pfuze_chip->regulator_descs[i].desc; if (pdata) init_data = pdata->init_data[i]; else init_data = match_init_data(i); /* SW2~SW4 high bit check and modify the voltage value table */ if (i >= sw_check_start && i <= sw_check_end) { ret = regmap_read(pfuze_chip->regmap, desc->vsel_reg, &val); if (ret) { dev_err(&client->dev, "Fails to read from the register.\n"); return ret; } if (val & sw_hi) { if (pfuze_chip->chip_id == PFUZE3000 || pfuze_chip->chip_id == PFUZE3001) { desc->volt_table = pfuze3000_sw2hi; desc->n_voltages = ARRAY_SIZE(pfuze3000_sw2hi); } else { desc->min_uV = 800000; desc->uV_step = 50000; desc->n_voltages = 51; } } } /* * Allow SW regulators to turn off. Checking it trough a flag is * a workaround to keep the backward compatibility with existing * old dtb's which may relay on the fact that we didn't disable * the switched regulator till yet. */ if (pfuze_chip->flags & PFUZE_FLAG_DISABLE_SW) { if (pfuze_chip->chip_id == PFUZE100 || pfuze_chip->chip_id == PFUZE200) { if (pfuze_chip->regulator_descs[i].sw_reg) { desc->ops = &pfuze100_sw_disable_regulator_ops; desc->enable_val = 0x8; desc->disable_val = 0x0; desc->enable_time = 500; } } } config.dev = &client->dev; config.init_data = init_data; config.driver_data = pfuze_chip; config.of_node = match_of_node(i); pfuze_chip->regulators[i] = devm_regulator_register(&client->dev, desc, &config); if (IS_ERR(pfuze_chip->regulators[i])) { dev_err(&client->dev, "register regulator%s failed\n", pfuze_chip->pfuze_regulators[i].desc.name); return PTR_ERR(pfuze_chip->regulators[i]); } } return 0; } static struct i2c_driver pfuze_driver = { .id_table = pfuze_device_id, .driver = { .name = "pfuze100-regulator", .of_match_table = pfuze_dt_ids, }, .probe = pfuze100_regulator_probe, }; module_i2c_driver(pfuze_driver); MODULE_AUTHOR("Robin Gong "); MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100/200/3000/3001 PMIC"); MODULE_LICENSE("GPL v2");