diff options
| author | Bill Huang <bilhuang@nvidia.com> | 2012-08-19 18:07:55 -0700 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-09-14 09:52:14 +0200 |
| commit | 004c15a68076f5bdc343bed92efed81087cecbfb (patch) | |
| tree | 719632562fd71bf6ec24cd0e9a72afbeda8ff6a6 /drivers/mfd/tps6586x.c | |
| parent | 80633f05b0dbf5819ef28f626f2f0b7c885d1f88 (diff) | |
| download | linux-004c15a68076f5bdc343bed92efed81087cecbfb.tar.gz linux-004c15a68076f5bdc343bed92efed81087cecbfb.tar.bz2 linux-004c15a68076f5bdc343bed92efed81087cecbfb.zip | |
mfd: dt: tps6586x: 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/tps6586x.c')
| -rw-r--r-- | drivers/mfd/tps6586x.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c index 5f58370ccf55..95ef40754dd7 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) { @@ -506,6 +520,11 @@ 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: |