diff options
Diffstat (limited to 'drivers/regulator/ltc3589.c')
| -rw-r--r-- | drivers/regulator/ltc3589.c | 73 |
1 files changed, 38 insertions, 35 deletions
diff --git a/drivers/regulator/ltc3589.c b/drivers/regulator/ltc3589.c index 38f7ccb63b52..5e0b669c3a01 100644 --- a/drivers/regulator/ltc3589.c +++ b/drivers/regulator/ltc3589.c @@ -54,6 +54,11 @@ #define LTC3589_VCCR_SW3_GO BIT(4) #define LTC3589_VCCR_LDO2_GO BIT(6) +#define LTC3589_VRRCR_SW1_RAMP_MASK GENMASK(1, 0) +#define LTC3589_VRRCR_SW2_RAMP_MASK GENMASK(3, 2) +#define LTC3589_VRRCR_SW3_RAMP_MASK GENMASK(5, 4) +#define LTC3589_VRRCR_LDO2_RAMP_MASK GENMASK(7, 6) + enum ltc3589_variant { LTC3589, LTC3589_1, @@ -88,27 +93,9 @@ static const int ltc3589_12_ldo4[] = { 1200000, 1800000, 2500000, 3200000, }; -static int ltc3589_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) -{ - struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev); - int sel, shift; - - if (unlikely(ramp_delay <= 0)) - return -EINVAL; - - /* VRRCR slew rate offsets are the same as VCCR go bit offsets */ - shift = ffs(rdev->desc->apply_bit) - 1; - - /* The slew rate can be set to 0.88, 1.75, 3.5, or 7 mV/uS */ - for (sel = 0; sel < 4; sel++) { - if ((880 << sel) >= ramp_delay) { - return regmap_update_bits(ltc3589->regmap, - LTC3589_VRRCR, - 0x3 << shift, sel << shift); - } - } - return -EINVAL; -} +static const unsigned int ltc3589_ramp_table[] = { + 880, 1750, 3500, 7000 +}; static int ltc3589_set_suspend_voltage(struct regulator_dev *rdev, int uV) { @@ -149,7 +136,7 @@ static const struct regulator_ops ltc3589_linear_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_ramp_delay = ltc3589_set_ramp_delay, + .set_ramp_delay = regulator_set_ramp_delay_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, .set_suspend_voltage = ltc3589_set_suspend_voltage, .set_suspend_mode = ltc3589_set_suspend_mode, @@ -218,16 +205,13 @@ static int ltc3589_of_parse_cb(struct device_node *np, return 0; } -#define LTC3589_REG(_name, _of_name, _ops, en_bit, dtv1_reg, dtv_mask, go_bit)\ +#define LTC3589_REG(_name, _of_name, _ops, en_bit, dtv1_reg, dtv_mask) \ [LTC3589_ ## _name] = { \ .name = #_name, \ .of_match = of_match_ptr(#_of_name), \ .regulators_node = of_match_ptr("regulators"), \ .of_parse_cb = ltc3589_of_parse_cb, \ .n_voltages = (dtv_mask) + 1, \ - .min_uV = (go_bit) ? 362500 : 0, \ - .uV_step = (go_bit) ? 12500 : 0, \ - .ramp_delay = (go_bit) ? 1750 : 0, \ .fixed_uV = (dtv_mask) ? 0 : 800000, \ .ops = <c3589_ ## _ops ## _regulator_ops, \ .type = REGULATOR_VOLTAGE, \ @@ -235,30 +219,49 @@ static int ltc3589_of_parse_cb(struct device_node *np, .owner = THIS_MODULE, \ .vsel_reg = (dtv1_reg), \ .vsel_mask = (dtv_mask), \ - .apply_reg = (go_bit) ? LTC3589_VCCR : 0, \ - .apply_bit = (go_bit), \ .enable_reg = (en_bit) ? LTC3589_OVEN : 0, \ .enable_mask = (en_bit), \ } #define LTC3589_LINEAR_REG(_name, _of_name, _dtv1) \ - LTC3589_REG(_name, _of_name, linear, LTC3589_OVEN_ ## _name, \ - LTC3589_ ## _dtv1, 0x1f, \ - LTC3589_VCCR_ ## _name ## _GO) + [LTC3589_ ## _name] = { \ + .name = #_name, \ + .of_match = of_match_ptr(#_of_name), \ + .regulators_node = of_match_ptr("regulators"), \ + .of_parse_cb = ltc3589_of_parse_cb, \ + .n_voltages = 32, \ + .min_uV = 362500, \ + .uV_step = 12500, \ + .ramp_delay = 1750, \ + .ops = <c3589_linear_regulator_ops, \ + .type = REGULATOR_VOLTAGE, \ + .id = LTC3589_ ## _name, \ + .owner = THIS_MODULE, \ + .vsel_reg = LTC3589_ ## _dtv1, \ + .vsel_mask = 0x1f, \ + .apply_reg = LTC3589_VCCR, \ + .apply_bit = LTC3589_VCCR_ ## _name ## _GO, \ + .enable_reg = LTC3589_OVEN, \ + .enable_mask = (LTC3589_OVEN_ ## _name), \ + .ramp_reg = LTC3589_VRRCR, \ + .ramp_mask = LTC3589_VRRCR_ ## _name ## _RAMP_MASK, \ + .ramp_delay_table = ltc3589_ramp_table, \ + .n_ramp_values = ARRAY_SIZE(ltc3589_ramp_table), \ + } + #define LTC3589_FIXED_REG(_name, _of_name) \ - LTC3589_REG(_name, _of_name, fixed, LTC3589_OVEN_ ## _name, 0, 0, 0) + LTC3589_REG(_name, _of_name, fixed, LTC3589_OVEN_ ## _name, 0, 0) static const struct regulator_desc ltc3589_regulators[] = { LTC3589_LINEAR_REG(SW1, sw1, B1DTV1), LTC3589_LINEAR_REG(SW2, sw2, B2DTV1), LTC3589_LINEAR_REG(SW3, sw3, B3DTV1), LTC3589_FIXED_REG(BB_OUT, bb-out), - LTC3589_REG(LDO1, ldo1, fixed_standby, 0, 0, 0, 0), + LTC3589_REG(LDO1, ldo1, fixed_standby, 0, 0, 0), LTC3589_LINEAR_REG(LDO2, ldo2, L2DTV1), LTC3589_FIXED_REG(LDO3, ldo3), - LTC3589_REG(LDO4, ldo4, table, LTC3589_OVEN_LDO4, LTC3589_L2DTV2, - 0x60, 0), + LTC3589_REG(LDO4, ldo4, table, LTC3589_OVEN_LDO4, LTC3589_L2DTV2, 0x60), }; static bool ltc3589_writeable_reg(struct device *dev, unsigned int reg) |