diff options
Diffstat (limited to 'drivers/regulator/pfuze100-regulator.c')
| -rw-r--r-- | drivers/regulator/pfuze100-regulator.c | 94 |
1 files changed, 93 insertions, 1 deletions
diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c index cf0b7e6f44e6..640c80b6f8b8 100644 --- a/drivers/regulator/pfuze100-regulator.c +++ b/drivers/regulator/pfuze100-regulator.c @@ -659,7 +659,13 @@ static int pfuze100_regulator_probe(struct i2c_client *client, /* SW2~SW4 high bit check and modify the voltage value table */ if (i >= sw_check_start && i <= sw_check_end) { - regmap_read(pfuze_chip->regmap, desc->vsel_reg, &val); + 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) { desc->volt_table = pfuze3000_sw2hi; @@ -768,6 +774,91 @@ err_ret: } #endif +static void pfuze100_regulator_shutdown(struct i2c_client *client) +{ + struct pfuze_chip *pfuze_chip; + int ret; + + if (!of_machine_is_compatible("toradex,colibri_imx6dl") && + !of_machine_is_compatible("toradex,apalis_imx6q")) + return; + + /* Configure all regulators to off on PMIC standby. For Colibri iMX6 + * we use the PMIC_STBY_REQ after shutdown, as the PMIC_ON_REQ signal + * together with VCC_BATT supplied from a battery leads to a + * nonbooting system. + * After the system has been shutdown with PMIC_ON_REQ it will never + * restart either by RESET or power cycle. + */ + pfuze_chip = i2c_get_clientdata(client); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_SW1ABVOL + PFUZE100_MODE_OFFSET, + 0x0f, 4); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_SW1CVOL + PFUZE100_MODE_OFFSET, + 0x0f, 4); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_SW3AVOL + PFUZE100_MODE_OFFSET, + 0x0f, 4); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_SW3BVOL + PFUZE100_MODE_OFFSET, + 0x0f, 4); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_SWBSTCON1, + 0x60, 0); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_VGEN1VOL, + 0x20, 0x20); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby vgen config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_VGEN2VOL, + 0x20, 0x20); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby vgen config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_VGEN3VOL, + 0x20, 0x20); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby vgen config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_VGEN4VOL, + 0x20, 0x20); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby vgen config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_VGEN5VOL, + 0x20, 0x20); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby vgen config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_VGEN6VOL, + 0x20, 0x20); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby vgen config failed %d\n", ret); +} + static const struct dev_pm_ops pfuze_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(pfuze_suspend, pfuze_resume) }; @@ -780,6 +871,7 @@ static struct i2c_driver pfuze_driver = { .pm = &pfuze_pm_ops, }, .probe = pfuze100_regulator_probe, + .shutdown = pfuze100_regulator_shutdown, }; module_i2c_driver(pfuze_driver); |