diff options
| author | Bill Huang <bilhuang@nvidia.com> | 2013-08-08 04:45:05 -0700 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2013-08-14 18:53:17 +0100 |
| commit | b81eec09a484c588ead035003ce7555ca8a9963a (patch) | |
| tree | b6da5dbb56f0718cd9e67134e14ffda1ce2b0e65 /drivers/mfd/palmas.c | |
| parent | 3134bcae4f70d56df31a5b024c54115d4f504727 (diff) | |
| download | lwn-b81eec09a484c588ead035003ce7555ca8a9963a.tar.gz lwn-b81eec09a484c588ead035003ce7555ca8a9963a.zip | |
mfd: palmas: Add power off control
Hook up "pm_power_off" to palmas power off routine if there is DT
property "ti,system-power-controller" defined, so platform which is
powered by this regulator can be powered off properly.
Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Mallikarjun Kasoju <mkasoju@nvidia.com>
Signed-off-by: Bill Huang <bilhuang@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/palmas.c')
| -rw-r--r-- | drivers/mfd/palmas.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c index e4d1c706df8b..220a34d71f8d 100644 --- a/drivers/mfd/palmas.c +++ b/drivers/mfd/palmas.c @@ -229,6 +229,32 @@ static void palmas_dt_to_pdata(struct i2c_client *i2c, PALMAS_POWER_CTRL_ENABLE2_MASK; if (i2c->irq) palmas_set_pdata_irq_flag(i2c, pdata); + + pdata->pm_off = of_property_read_bool(node, + "ti,system-power-controller"); +} + +static struct palmas *palmas_dev; +static void palmas_power_off(void) +{ + unsigned int addr; + int ret, slave; + + if (!palmas_dev) + return; + + slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE); + addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_DEV_CTRL); + + ret = regmap_update_bits( + palmas_dev->regmap[slave], + addr, + PALMAS_DEV_CTRL_DEV_ON, + 0); + + if (ret) + pr_err("%s: Unable to write to DEV_CTRL_DEV_ON: %d\n", + __func__, ret); } static unsigned int palmas_features = PALMAS_PMIC_FEATURE_SMPS10_BOOST; @@ -423,10 +449,13 @@ no_irq: */ if (node) { ret = of_platform_populate(node, NULL, NULL, &i2c->dev); - if (ret < 0) + if (ret < 0) { goto err_irq; - else + } else if (pdata->pm_off && !pm_power_off) { + palmas_dev = palmas; + pm_power_off = palmas_power_off; return ret; + } } return ret; |