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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>
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3134bcae4f
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3 changed files with 37 additions and 2 deletions
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@ -37,6 +37,9 @@ Optional nodes:
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ti,smps-range - OTP has the wrong range set for the hardware so override
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0 - low range, 1 - high range.
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- ti,system-power-controller: Telling whether or not this pmic is controlling
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the system power.
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Example:
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#include <dt-bindings/interrupt-controller/irq.h>
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@ -49,6 +52,8 @@ pmic {
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ti,ldo6-vibrator;
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ti,system-power-controller;
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regulators {
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smps12_reg : smps12 {
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regulator-name = "smps12";
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@ -229,6 +229,32 @@ static void palmas_dt_to_pdata(struct i2c_client *i2c,
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PALMAS_POWER_CTRL_ENABLE2_MASK;
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if (i2c->irq)
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palmas_set_pdata_irq_flag(i2c, pdata);
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pdata->pm_off = of_property_read_bool(node,
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"ti,system-power-controller");
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}
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static struct palmas *palmas_dev;
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static void palmas_power_off(void)
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{
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unsigned int addr;
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int ret, slave;
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if (!palmas_dev)
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return;
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slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
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addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_DEV_CTRL);
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ret = regmap_update_bits(
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palmas_dev->regmap[slave],
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addr,
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PALMAS_DEV_CTRL_DEV_ON,
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0);
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if (ret)
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pr_err("%s: Unable to write to DEV_CTRL_DEV_ON: %d\n",
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__func__, ret);
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}
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static unsigned int palmas_features = PALMAS_PMIC_FEATURE_SMPS10_BOOST;
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@ -423,10 +449,13 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
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*/
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if (node) {
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ret = of_platform_populate(node, NULL, NULL, &i2c->dev);
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if (ret < 0)
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if (ret < 0) {
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goto err_irq;
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else
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} else if (pdata->pm_off && !pm_power_off) {
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palmas_dev = palmas;
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pm_power_off = palmas_power_off;
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return ret;
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}
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}
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return ret;
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@ -258,6 +258,7 @@ struct palmas_platform_data {
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*/
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int mux_from_pdata;
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u8 pad1, pad2;
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bool pm_off;
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struct palmas_pmic_platform_data *pmic_pdata;
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struct palmas_gpadc_platform_data *gpadc_pdata;
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