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@xxxxxxxxxx> Signed-off-by: Bill Huang <bilhuang@xxxxxxxxxx> Tested-by: Stephen Warren <swarren@xxxxxxxxxxxxx> --- .../devicetree/bindings/regulator/tps6586x.txt | 6 ++++++ drivers/mfd/tps6586x.c | 19 +++++++++++++++++++ include/linux/mfd/tps6586x.h | 1 + 3 files changed, 26 insertions(+), 0 deletions(-) diff --git a/Documentation/devicetree/bindings/regulator/tps6586x.txt b/Documentation/devicetree/bindings/regulator/tps6586x.txt index d156e1b..03dfa4e 100644 --- a/Documentation/devicetree/bindings/regulator/tps6586x.txt +++ b/Documentation/devicetree/bindings/regulator/tps6586x.txt @@ -18,6 +18,10 @@ Required properties: - vinldo678-supply: The input supply for the LDO6, LDO7 and LDO8 - vinldo9-supply: The input supply for the LDO9 +Optional properties: +- ti,system-power-controller: Telling whether or not this pmic is controlling + the system power. + Each regulator is defined using the standard binding for regulators. Example: @@ -30,6 +34,8 @@ Example: #gpio-cells = <2>; gpio-controller; + ti,system-power-controller; + sm0-supply = <&some_reg>; sm1-supply = <&some_reg>; sm2-supply = <&some_reg>; diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c index 353c348..d08f59c 100644 --- a/drivers/mfd/tps6586x.c +++ b/drivers/mfd/tps6586x.c @@ -29,6 +29,10 @@ #include <linux/mfd/core.h> #include <linux/mfd/tps6586x.h> +#define TPS6586X_SUPPLYENE 0x14 +#define EXITSLREQ_BIT BIT(1) +#define SLEEP_MODE_BIT BIT(3) + /* interrupt control registers */ #define TPS6586X_INT_ACK1 0xb5 #define TPS6586X_INT_ACK2 0xb6 @@ -409,6 +413,7 @@ static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *clien pdata->subdevs = devs; pdata->gpio_base = -1; pdata->irq_base = -1; + pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller"); return pdata; } @@ -441,6 +446,15 @@ static const struct regmap_config tps6586x_regmap_config = { .cache_type = REGCACHE_RBTREE, }; +static struct device *tps6586x_dev; +static void tps6586x_power_off(void) +{ + if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT)) + return; + + tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT); +} + static int __devinit tps6586x_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -505,6 +519,11 @@ static int __devinit tps6586x_i2c_probe(struct i2c_client *client, goto err_add_devs; } + if (pdata->pm_off && !pm_power_off) { + tps6586x_dev = &client->dev; + pm_power_off = tps6586x_power_off; + } + return 0; err_add_devs: diff --git a/include/linux/mfd/tps6586x.h b/include/linux/mfd/tps6586x.h index f350fd0..08f109f 100644 --- a/include/linux/mfd/tps6586x.h +++ b/include/linux/mfd/tps6586x.h @@ -77,6 +77,7 @@ struct tps6586x_platform_data { int gpio_base; int irq_base; + bool pm_off; }; /* -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html