diff options
Diffstat (limited to 'drivers/regulator/pf8x00-regulator.c')
-rw-r--r-- | drivers/regulator/pf8x00-regulator.c | 278 |
1 files changed, 198 insertions, 80 deletions
diff --git a/drivers/regulator/pf8x00-regulator.c b/drivers/regulator/pf8x00-regulator.c index af9918cd27aa..9b28bd63208d 100644 --- a/drivers/regulator/pf8x00-regulator.c +++ b/drivers/regulator/pf8x00-regulator.c @@ -114,7 +114,6 @@ enum swxilim_bits { #define PF8X00_SWXILIM_SHIFT 3 #define PF8X00_SWXILIM_MASK GENMASK(4, 3) #define PF8X00_SWXPHASE_MASK GENMASK(2, 0) -#define PF8X00_SWXPHASE_DEFAULT 0 #define PF8X00_SWXPHASE_SHIFT 7 enum pf8x00_devid { @@ -126,10 +125,12 @@ enum pf8x00_devid { #define PF8X00_DEVICE_FAM_MASK GENMASK(7, 4) #define PF8X00_DEVICE_ID_MASK GENMASK(3, 0) -struct pf8x00_regulator { +struct pf8x00_regulator_data { struct regulator_desc desc; - u8 ilim; - u8 phase_shift; + unsigned int suspend_enable_reg; + unsigned int suspend_enable_mask; + unsigned int suspend_voltage_reg; + unsigned int suspend_voltage_cache; }; struct pf8x00_chip { @@ -150,35 +151,16 @@ static const int pf8x00_ldo_voltages[] = { 3100000, 3150000, 3200000, 3300000, 3350000, 1650000, 1700000, 5000000, }; -#define SWV(i) (6250 * i + 400000) -#define SWV_LINE(i) SWV(i*8+0), SWV(i*8+1), SWV(i*8+2), SWV(i*8+3), \ - SWV(i*8+4), SWV(i*8+5), SWV(i*8+6), SWV(i*8+7) +/* Output: 2.1A to 4.5A */ +static const unsigned int pf8x00_sw_current_table[] = { + 2100000, 2600000, 3000000, 4500000, +}; /* Output: 0.4V to 1.8V */ -static const int pf8x00_sw1_to_6_voltages[] = { - SWV_LINE(0), - SWV_LINE(1), - SWV_LINE(2), - SWV_LINE(3), - SWV_LINE(4), - SWV_LINE(5), - SWV_LINE(6), - SWV_LINE(7), - SWV_LINE(8), - SWV_LINE(9), - SWV_LINE(10), - SWV_LINE(11), - SWV_LINE(12), - SWV_LINE(13), - SWV_LINE(14), - SWV_LINE(15), - SWV_LINE(16), - SWV_LINE(17), - SWV_LINE(18), - SWV_LINE(19), - SWV_LINE(20), - SWV_LINE(21), - 1500000, 1800000, +#define PF8XOO_SW1_6_VOLTAGE_NUM 0xB2 +static const struct linear_range pf8x00_sw1_to_6_voltages[] = { + REGULATOR_LINEAR_RANGE(400000, 0x00, 0xB0, 6250), + REGULATOR_LINEAR_RANGE(1800000, 0xB1, 0xB1, 0), }; /* Output: 1.0V to 4.1V */ @@ -194,15 +176,10 @@ static const int pf8x00_vsnvs_voltages[] = { 0, 1800000, 3000000, 3300000, }; -static struct pf8x00_regulator *desc_to_regulator(const struct regulator_desc *desc) -{ - return container_of(desc, struct pf8x00_regulator, desc); -} - -static void swxilim_select(const struct regulator_desc *desc, int ilim) +static void swxilim_select(struct pf8x00_chip *chip, int id, int ilim) { - struct pf8x00_regulator *data = desc_to_regulator(desc); u8 ilim_sel; + u8 reg = PF8X00_SW_BASE(id) + SW_CONFIG2; switch (ilim) { case 2100: @@ -222,43 +199,130 @@ static void swxilim_select(const struct regulator_desc *desc, int ilim) break; } - data->ilim = ilim_sel; + regmap_update_bits(chip->regmap, reg, + PF8X00_SWXILIM_MASK, + ilim_sel << PF8X00_SWXILIM_SHIFT); } -static int pf8x00_of_parse_cb(struct device_node *np, +static void handle_ilim_property(struct device_node *np, const struct regulator_desc *desc, struct regulator_config *config) { - struct pf8x00_regulator *data = desc_to_regulator(desc); struct pf8x00_chip *chip = config->driver_data; + int ret; + int val; + + if ((desc->id >= PF8X00_BUCK1) && (desc->id <= PF8X00_BUCK7)) { + ret = of_property_read_u32(np, "nxp,ilim-ma", &val); + if (ret) { + dev_dbg(chip->dev, "unspecified ilim for BUCK%d, use value stored in OTP\n", + desc->id - PF8X00_LDO4); + return; + } + + dev_warn(chip->dev, "nxp,ilim-ma is deprecated, please use regulator-max-microamp\n"); + swxilim_select(chip, desc->id, val); + + } else + dev_warn(chip->dev, "nxp,ilim-ma used with incorrect regulator (%d)\n", desc->id); +} + +static void handle_shift_property(struct device_node *np, + const struct regulator_desc *desc, + struct regulator_config *config) +{ + unsigned char id = desc->id - PF8X00_LDO4; + unsigned char reg = PF8X00_SW_BASE(id) + SW_CONFIG2; + struct pf8x00_chip *chip = config->driver_data; + int phase; int val; int ret; + if ((desc->id >= PF8X00_BUCK1) && (desc->id <= PF8X00_BUCK7)) { + ret = of_property_read_u32(np, "nxp,phase-shift", &val); + if (ret) { + dev_dbg(chip->dev, + "unspecified phase-shift for BUCK%d, using OTP configuration\n", + id); + return; + } - ret = of_property_read_u32(np, "nxp,ilim-ma", &val); - if (ret) - dev_dbg(chip->dev, "unspecified ilim for BUCK%d, use 2100 mA\n", - desc->id - PF8X00_LDO4); + if (val < 0 || val > 315 || val % 45 != 0) { + dev_warn(config->dev, + "invalid phase_shift %d for BUCK%d, using OTP configuration\n", + val, id); + return; + } - swxilim_select(desc, val); + phase = val / 45; - ret = of_property_read_u32(np, "nxp,phase-shift", &val); - if (ret) { - dev_dbg(chip->dev, - "unspecified phase-shift for BUCK%d, use 0 degrees\n", - desc->id - PF8X00_LDO4); - val = PF8X00_SWXPHASE_DEFAULT; + if (phase >= 1) + phase -= 1; + else + phase = PF8X00_SWXPHASE_SHIFT; + + regmap_update_bits(chip->regmap, reg, + PF8X00_SWXPHASE_MASK, + phase); + } else + dev_warn(chip->dev, "nxp,phase-shift used with incorrect regulator (%d)\n", id); + +} + +static int pf8x00_of_parse_cb(struct device_node *np, + const struct regulator_desc *desc, + struct regulator_config *config) +{ + + handle_ilim_property(np, desc, config); + handle_shift_property(np, desc, config); + + return 0; +} + +static int pf8x00_suspend_enable(struct regulator_dev *rdev) +{ + struct pf8x00_regulator_data *regl = rdev_get_drvdata(rdev); + struct regmap *rmap = rdev_get_regmap(rdev); + + return regmap_update_bits(rmap, regl->suspend_enable_reg, + regl->suspend_enable_mask, + regl->suspend_enable_mask); +} + +static int pf8x00_suspend_disable(struct regulator_dev *rdev) +{ + struct pf8x00_regulator_data *regl = rdev_get_drvdata(rdev); + struct regmap *rmap = rdev_get_regmap(rdev); + + return regmap_update_bits(rmap, regl->suspend_enable_reg, + regl->suspend_enable_mask, 0); +} + +static int pf8x00_set_suspend_voltage(struct regulator_dev *rdev, int uV) +{ + struct pf8x00_regulator_data *regl = rdev_get_drvdata(rdev); + int ret; + + if (regl->suspend_voltage_cache == uV) + return 0; + + ret = regulator_map_voltage_iterate(rdev, uV, uV); + if (ret < 0) { + dev_err(rdev_get_dev(rdev), "failed to map %i uV\n", uV); + return ret; } - phase = val / 45; - if ((phase * 45) != val) { - dev_warn(config->dev, - "invalid phase_shift %d for BUCK%d, use 0 degrees\n", - (phase * 45), desc->id - PF8X00_LDO4); - phase = PF8X00_SWXPHASE_SHIFT; + dev_dbg(rdev_get_dev(rdev), "uV: %i, reg: 0x%x, msk: 0x%x, val: 0x%x\n", + uV, regl->suspend_voltage_reg, regl->desc.vsel_mask, ret); + ret = regmap_update_bits(rdev->regmap, regl->suspend_voltage_reg, + regl->desc.vsel_mask, ret); + if (ret < 0) { + dev_err(rdev_get_dev(rdev), "failed to set %i uV\n", uV); + return ret; } - data->phase_shift = (phase >= 1) ? phase - 1 : PF8X00_SWXPHASE_SHIFT; + regl->suspend_voltage_cache = uV; return 0; } @@ -270,15 +334,37 @@ static const struct regulator_ops pf8x00_ldo_ops = { .list_voltage = regulator_list_voltage_table, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_suspend_enable = pf8x00_suspend_enable, + .set_suspend_disable = pf8x00_suspend_disable, + .set_suspend_voltage = pf8x00_set_suspend_voltage, }; -static const struct regulator_ops pf8x00_buck_ops = { + +static const struct regulator_ops pf8x00_buck1_6_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .list_voltage = regulator_list_voltage_linear_range, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .get_current_limit = regulator_get_current_limit_regmap, + .set_current_limit = regulator_set_current_limit_regmap, + .set_suspend_enable = pf8x00_suspend_enable, + .set_suspend_disable = pf8x00_suspend_disable, + .set_suspend_voltage = pf8x00_set_suspend_voltage, +}; + +static const struct regulator_ops pf8x00_buck7_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_table, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, + .get_current_limit = regulator_get_current_limit_regmap, + .set_current_limit = regulator_set_current_limit_regmap, + .set_suspend_enable = pf8x00_suspend_enable, + .set_suspend_disable = pf8x00_suspend_disable, }; static const struct regulator_ops pf8x00_vsnvs_ops = { @@ -310,6 +396,9 @@ static const struct regulator_ops pf8x00_vsnvs_ops = { .disable_val = 0x0, \ .enable_mask = 2, \ }, \ + .suspend_enable_reg = (base) + LDO_CONFIG2, \ + .suspend_enable_mask = 1, \ + .suspend_voltage_reg = (base) + LDO_STBY_VOLT, \ } #define PF8X00BUCK(_id, _name, base, voltages) \ @@ -319,14 +408,54 @@ static const struct regulator_ops pf8x00_vsnvs_ops = { .of_match = _name, \ .regulators_node = "regulators", \ .of_parse_cb = pf8x00_of_parse_cb, \ - .n_voltages = ARRAY_SIZE(voltages), \ - .ops = &pf8x00_buck_ops, \ + .n_voltages = PF8XOO_SW1_6_VOLTAGE_NUM, \ + .ops = &pf8x00_buck1_6_ops, \ .type = REGULATOR_VOLTAGE, \ .id = PF8X00_BUCK ## _id, \ .owner = THIS_MODULE, \ + .ramp_delay = 19000, \ + .linear_ranges = pf8x00_sw1_to_6_voltages, \ + .n_linear_ranges = \ + ARRAY_SIZE(pf8x00_sw1_to_6_voltages), \ + .vsel_reg = (base) + SW_RUN_VOLT, \ + .vsel_mask = 0xff, \ + .curr_table = pf8x00_sw_current_table, \ + .n_current_limits = \ + ARRAY_SIZE(pf8x00_sw_current_table), \ + .csel_reg = (base) + SW_CONFIG2, \ + .csel_mask = PF8X00_SWXILIM_MASK, \ + .enable_reg = (base) + SW_MODE1, \ + .enable_val = 0x3, \ + .disable_val = 0x0, \ + .enable_mask = 0x3, \ + .enable_time = 500, \ + }, \ + .suspend_enable_reg = (base) + SW_MODE1, \ + .suspend_enable_mask = 0xc, \ + .suspend_voltage_reg = (base) + SW_STBY_VOLT, \ + } + +#define PF8X00BUCK7(_name, base, voltages) \ + [PF8X00_BUCK7] = { \ + .desc = { \ + .name = _name, \ + .of_match = _name, \ + .regulators_node = "regulators", \ + .of_parse_cb = pf8x00_of_parse_cb, \ + .n_voltages = ARRAY_SIZE(voltages), \ + .ops = &pf8x00_buck7_ops, \ + .type = REGULATOR_VOLTAGE, \ + .id = PF8X00_BUCK7, \ + .owner = THIS_MODULE, \ + .ramp_delay = 19000, \ .volt_table = voltages, \ .vsel_reg = (base) + SW_RUN_VOLT, \ .vsel_mask = 0xff, \ + .curr_table = pf8x00_sw_current_table, \ + .n_current_limits = \ + ARRAY_SIZE(pf8x00_sw_current_table), \ + .csel_reg = (base) + SW_CONFIG2, \ + .csel_mask = PF8X00_SWXILIM_MASK, \ .enable_reg = (base) + SW_MODE1, \ .enable_val = 0x3, \ .disable_val = 0x0, \ @@ -335,6 +464,7 @@ static const struct regulator_ops pf8x00_vsnvs_ops = { }, \ } + #define PF8X00VSNVS(_name, base, voltages) \ [PF8X00_VSNVS] = { \ .desc = { \ @@ -352,7 +482,7 @@ static const struct regulator_ops pf8x00_vsnvs_ops = { }, \ } -static struct pf8x00_regulator pf8x00_regulators_data[PF8X00_MAX_REGULATORS] = { +static struct pf8x00_regulator_data pf8x00_regs_data[PF8X00_MAX_REGULATORS] = { PF8X00LDO(1, "ldo1", PF8X00_LDO_BASE(PF8X00_LDO1), pf8x00_ldo_voltages), PF8X00LDO(2, "ldo2", PF8X00_LDO_BASE(PF8X00_LDO2), pf8x00_ldo_voltages), PF8X00LDO(3, "ldo3", PF8X00_LDO_BASE(PF8X00_LDO3), pf8x00_ldo_voltages), @@ -363,7 +493,7 @@ static struct pf8x00_regulator pf8x00_regulators_data[PF8X00_MAX_REGULATORS] = { PF8X00BUCK(4, "buck4", PF8X00_SW_BASE(PF8X00_BUCK4), pf8x00_sw1_to_6_voltages), PF8X00BUCK(5, "buck5", PF8X00_SW_BASE(PF8X00_BUCK5), pf8x00_sw1_to_6_voltages), PF8X00BUCK(6, "buck6", PF8X00_SW_BASE(PF8X00_BUCK6), pf8x00_sw1_to_6_voltages), - PF8X00BUCK(7, "buck7", PF8X00_SW_BASE(PF8X00_BUCK7), pf8x00_sw7_voltages), + PF8X00BUCK7("buck7", PF8X00_SW_BASE(PF8X00_BUCK7), pf8x00_sw7_voltages), PF8X00VSNVS("vsnvs", PF8X00_VSNVS_CONFIG1, pf8x00_vsnvs_voltages), }; @@ -399,7 +529,7 @@ static int pf8x00_identify(struct pf8x00_chip *chip) name = "PF8121A"; break; case PF8200: - name = "PF8100"; + name = "PF8200"; break; default: dev_err(chip->dev, "Unknown pf8x00 device id 0x%x\n", dev_id); @@ -437,12 +567,12 @@ static int pf8x00_i2c_probe(struct i2c_client *client) if (ret) return ret; - for (id = 0; id < ARRAY_SIZE(pf8x00_regulators_data); id++) { - struct pf8x00_regulator *data = &pf8x00_regulators_data[id]; + for (id = 0; id < ARRAY_SIZE(pf8x00_regs_data); id++) { + struct pf8x00_regulator_data *data = &pf8x00_regs_data[id]; struct regulator_dev *rdev; config.dev = chip->dev; - config.driver_data = chip; + config.driver_data = data; config.regmap = chip->regmap; rdev = devm_regulator_register(&client->dev, &data->desc, &config); @@ -451,18 +581,6 @@ static int pf8x00_i2c_probe(struct i2c_client *client) "failed to register %s regulator\n", data->desc.name); return PTR_ERR(rdev); } - - if ((id >= PF8X00_BUCK1) && (id <= PF8X00_BUCK7)) { - u8 reg = PF8X00_SW_BASE(id) + SW_CONFIG2; - - regmap_update_bits(chip->regmap, reg, - PF8X00_SWXPHASE_MASK, - data->phase_shift); - - regmap_update_bits(chip->regmap, reg, - PF8X00_SWXILIM_MASK, - data->ilim << PF8X00_SWXILIM_SHIFT); - } } return 0; |