diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mfd/rn5t618.c | 43 |
1 files changed, 33 insertions, 10 deletions
diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c index 232de50562f9..7497edf6ee41 100644 --- a/drivers/mfd/rn5t618.c +++ b/drivers/mfd/rn5t618.c @@ -77,7 +77,7 @@ static const struct regmap_irq_chip rc5t619_irq_chip = { .mask_invert = true, }; -static struct rn5t618 *rn5t618_pm_power_off; +static struct i2c_client *rn5t618_pm_power_off; static struct notifier_block rn5t618_restart_handler; static int rn5t618_irq_init(struct rn5t618 *rn5t618) @@ -110,13 +110,38 @@ static int rn5t618_irq_init(struct rn5t618 *rn5t618) static void rn5t618_trigger_poweroff_sequence(bool repower) { + int ret; + /* disable automatic repower-on */ - regmap_update_bits(rn5t618_pm_power_off->regmap, RN5T618_REPCNT, - RN5T618_REPCNT_REPWRON, - repower ? RN5T618_REPCNT_REPWRON : 0); + ret = i2c_smbus_read_byte_data(rn5t618_pm_power_off, RN5T618_REPCNT); + if (ret < 0) + goto err; + + ret &= ~RN5T618_REPCNT_REPWRON; + if (repower) + ret |= RN5T618_REPCNT_REPWRON; + + ret = i2c_smbus_write_byte_data(rn5t618_pm_power_off, + RN5T618_REPCNT, (u8)ret); + if (ret < 0) + goto err; + /* start power-off sequence */ - regmap_update_bits(rn5t618_pm_power_off->regmap, RN5T618_SLPCNT, - RN5T618_SLPCNT_SWPWROFF, RN5T618_SLPCNT_SWPWROFF); + ret = i2c_smbus_read_byte_data(rn5t618_pm_power_off, RN5T618_SLPCNT); + if (ret < 0) + goto err; + + ret |= RN5T618_SLPCNT_SWPWROFF; + + ret = i2c_smbus_write_byte_data(rn5t618_pm_power_off, + RN5T618_SLPCNT, (u8)ret); + if (ret < 0) + goto err; + + return; + +err: + dev_alert(&rn5t618_pm_power_off->dev, "Failed to shutdown (err = %d)\n", ret); } static void rn5t618_power_off(void) @@ -189,7 +214,7 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c) return ret; } - rn5t618_pm_power_off = priv; + rn5t618_pm_power_off = i2c; if (of_device_is_system_power_controller(i2c->dev.of_node)) { if (!pm_power_off) pm_power_off = rn5t618_power_off; @@ -211,9 +236,7 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c) static int rn5t618_i2c_remove(struct i2c_client *i2c) { - struct rn5t618 *priv = i2c_get_clientdata(i2c); - - if (priv == rn5t618_pm_power_off) { + if (i2c == rn5t618_pm_power_off) { rn5t618_pm_power_off = NULL; pm_power_off = NULL; } |