diff options
| -rw-r--r-- | drivers/regulator/palmas-regulator.c | 93 | ||||
| -rw-r--r-- | include/linux/mfd/palmas.h | 14 |
2 files changed, 79 insertions, 28 deletions
diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c index 6538b33..3336916 100644 --- a/drivers/regulator/palmas-regulator.c +++ b/drivers/regulator/palmas-regulator.c @@ -187,6 +187,8 @@ static const struct regs_info palmas_regs_info[] = { }, }; +static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500}; + #define SMPS_CTRL_MODE_OFF 0x00 #define SMPS_CTRL_MODE_ON 0x01 #define SMPS_CTRL_MODE_ECO 0x02 @@ -397,6 +399,56 @@ static int palmas_map_voltage_smps(struct regulator_dev *rdev, return ret; } +static int palma_smps_set_voltage_smps_time_sel(struct regulator_dev *rdev, + unsigned int old_selector, unsigned int new_selector) +{ + struct palmas_pmic *pmic = rdev_get_drvdata(rdev); + int id = rdev_get_id(rdev); + int old_uv, new_uv; + unsigned int ramp_delay = pmic->ramp_delay[id]; + + if (!ramp_delay) + return 0; + + old_uv = palmas_list_voltage_smps(rdev, old_selector); + if (old_uv < 0) + return old_uv; + + new_uv = palmas_list_voltage_smps(rdev, new_selector); + if (new_uv < 0) + return new_uv; + + return DIV_ROUND_UP(abs(old_uv - new_uv), ramp_delay); +} + +static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev, + int ramp_delay) +{ + struct palmas_pmic *pmic = rdev_get_drvdata(rdev); + int id = rdev_get_id(rdev); + unsigned int reg = 0; + unsigned int addr = palmas_regs_info[id].tstep_addr; + int ret; + + if (ramp_delay <= 0) + reg = 0; + else if (ramp_delay < 2500) + reg = 3; + else if (ramp_delay < 5000) + reg = 2; + else + reg = 1; + + ret = palmas_smps_write(pmic->palmas, addr, reg); + if (ret < 0) { + dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret); + return ret; + } + + pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg]; + return ret; +} + static struct regulator_ops palmas_ops_smps = { .is_enabled = palmas_is_enabled_smps, .enable = palmas_enable_smps, @@ -407,6 +459,8 @@ static struct regulator_ops palmas_ops_smps = { .set_voltage_sel = regulator_set_voltage_sel_regmap, .list_voltage = palmas_list_voltage_smps, .map_voltage = palmas_map_voltage_smps, + .set_voltage_time_sel = palma_smps_set_voltage_smps_time_sel, + .set_ramp_delay = palmas_smps_set_ramp_delay, }; static struct regulator_ops palmas_ops_smps10 = { @@ -495,16 +549,6 @@ static int palmas_smps_init(struct palmas *palmas, int id, if (ret) return ret; - if (palmas_regs_info[id].tstep_addr && reg_init->tstep) { - addr = palmas_regs_info[id].tstep_addr; - - reg = reg_init->tstep & PALMAS_SMPS12_TSTEP_TSTEP_MASK; - - ret = palmas_smps_write(palmas, addr, reg); - if (ret) - return ret; - } - if (palmas_regs_info[id].vsel_addr && reg_init->vsel) { addr = palmas_regs_info[id].vsel_addr; @@ -686,11 +730,6 @@ static void palmas_dt_to_pdata(struct device *dev, if (!ret) pdata->reg_init[idx]->mode_sleep = prop; - ret = of_property_read_u32(palmas_matches[idx].of_node, - "ti,tstep", &prop); - if (!ret) - pdata->reg_init[idx]->tstep = prop; - ret = of_property_read_bool(palmas_matches[idx].of_node, "ti,smps-range"); if (ret) @@ -752,6 +791,7 @@ static int palmas_regulators_probe(struct platform_device *pdev) config.driver_data = pmic; for (id = 0; id < PALMAS_REG_LDO1; id++) { + bool ramp_delay_support = false; /* * Miss out regulators which are not available due @@ -762,19 +802,42 @@ static int palmas_regulators_probe(struct platform_device *pdev) case PALMAS_REG_SMPS3: if (pmic->smps123) continue; + if (id == PALMAS_REG_SMPS12) + ramp_delay_support = true; break; case PALMAS_REG_SMPS123: if (!pmic->smps123) continue; + ramp_delay_support = true; break; case PALMAS_REG_SMPS45: case PALMAS_REG_SMPS7: if (pmic->smps457) continue; + if (id == PALMAS_REG_SMPS45) + ramp_delay_support = true; break; case PALMAS_REG_SMPS457: if (!pmic->smps457) continue; + ramp_delay_support = true; + break; + } + + if ((id == PALMAS_REG_SMPS6) && (id == PALMAS_REG_SMPS8)) + ramp_delay_support = true; + + if (ramp_delay_support) { + addr = palmas_regs_info[id].tstep_addr; + ret = palmas_smps_read(pmic->palmas, addr, ®); + if (ret < 0) { + dev_err(&pdev->dev, + "reading TSTEP reg failed: %d\n", ret); + goto err_unregister_regulator; + } + pmic->desc[id].ramp_delay = + palmas_smps_ramp_delay[reg & 0x3]; + pmic->ramp_delay[id] = pmic->desc[id].ramp_delay; } /* Initialise sleep/init values from platform data */ diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h index 10daa8c..a58c579 100644 --- a/include/linux/mfd/palmas.h +++ b/include/linux/mfd/palmas.h @@ -109,19 +109,6 @@ struct palmas_reg_init { */ int mode_sleep; - /* tstep is the timestep loaded to the TSTEP register - * - * For SMPS - * - * 0: Jump (no slope control) - * 1: 10mV/us - * 2: 5mV/us - * 3: 2.5mV/us - * - * For LDO unused - */ - int tstep; - /* voltage_sel is the bitfield loaded onto the SMPSX_VOLTAGE * register. Set this is the default voltage set in OTP needs * to be overridden. @@ -339,6 +326,7 @@ struct palmas_pmic { int smps457; int range[PALMAS_REG_SMPS10]; + unsigned int ramp_delay[PALMAS_REG_SMPS10]; }; struct palmas_resource { |
