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>
diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
index d3ce4d5..ca90294 100644
--- a/drivers/mfd/tps65910.c
+++ b/drivers/mfd/tps65910.c
@@ -198,6 +198,8 @@
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 @@
}
#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 @@
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;
}