diff options
| author | Bill Huang <bilhuang@nvidia.com> | 2012-08-20 05:07:56 +0400 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-09-14 11:52:14 +0400 |
| commit | b079fa72069ba7f754ba8bdf737335abdb971b67 (patch) | |
| tree | 475ae5a57cddff10d9a3905390ba80a38301250a /drivers/mfd | |
| parent | 004c15a68076f5bdc343bed92efed81087cecbfb (diff) | |
| download | linux-b079fa72069ba7f754ba8bdf737335abdb971b67.tar.xz | |
mfd: dt: tps65910: Add power off control
Add DT property "ti,system-power-controller" telling whether or not this
pmic is in charge of controlling the system power, so the power off
routine can be hooked up to system call "pm_power_off".
Based on the work by:
Dan Willemsen <dwillemsen@nvidia.com>
Signed-off-by: Bill Huang <bilhuang@nvidia.com>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/tps65910.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c index d3ce4d569deb..ca902943cfa9 100644 --- a/drivers/mfd/tps65910.c +++ b/drivers/mfd/tps65910.c @@ -198,6 +198,8 @@ static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client, board_info->irq = client->irq; board_info->irq_base = -1; + board_info->pm_off = of_property_read_bool(np, + "ti,system-power-controller"); return board_info; } @@ -210,6 +212,21 @@ struct tps65910_board *tps65910_parse_dt(struct i2c_client *client, } #endif +static struct i2c_client *tps65910_i2c_client; +static void tps65910_power_off(void) +{ + struct tps65910 *tps65910; + + tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev); + + if (tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL, + DEVCTRL_PWR_OFF_MASK) < 0) + return; + + tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL, + DEVCTRL_DEV_ON_MASK); +} + static __devinit int tps65910_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -267,6 +284,11 @@ static __devinit int tps65910_i2c_probe(struct i2c_client *i2c, tps65910_ck32k_init(tps65910, pmic_plat_data); tps65910_sleepinit(tps65910, pmic_plat_data); + if (pmic_plat_data->pm_off && !pm_power_off) { + tps65910_i2c_client = i2c; + pm_power_off = tps65910_power_off; + } + return ret; } |