diff options
| author | Henry Chen | 2015-08-10 21:10:45 +0800 |
|---|---|---|
| committer | Lee Jones | 2015-08-11 15:09:11 +0100 |
| commit | f3151ab4a7320ce3f48955fe796bd90dd00881ab (patch) | |
| tree | 9360da8758a53b9975831988047648c316f7af4d /drivers/mfd | |
| parent | d9c93f5de8c84ccbb58fd88a530b730643fbb129 (diff) | |
mfd: mt6397: Implement wake handler and suspend/resume to handle wake up event
Implement .irq_set_wake() to get who is wakeup source and setup on suspend/reumse. Enable
mt6393_irq as wake up source properly to pinctrl by enable_irq_wake()/enable_irq_wake().
Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/mt6397-core.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c index 9ca290fec003..1749c1c9f405 100644 --- a/drivers/mfd/mt6397-core.c +++ b/drivers/mfd/mt6397-core.c @@ -93,12 +93,31 @@ static void mt6397_irq_enable(struct irq_data *data) mt6397->irq_masks_cur[reg] |= BIT(shift); } +#ifdef CONFIG_PM_SLEEP +static int mt6397_irq_set_wake(struct irq_data *irq_data, unsigned int on) +{ + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(irq_data); + int shift = irq_data->hwirq & 0xf; + int reg = irq_data->hwirq >> 4; + + if (on) + mt6397->wake_mask[reg] |= BIT(shift); + else + mt6397->wake_mask[reg] &= ~BIT(shift); + + return 0; +} +#else +#define mt6397_irq_set_wake NULL +#endif + static struct irq_chip mt6397_irq_chip = { .name = "mt6397-irq", .irq_bus_lock = mt6397_irq_lock, .irq_bus_sync_unlock = mt6397_irq_sync_unlock, .irq_enable = mt6397_irq_enable, .irq_disable = mt6397_irq_disable, + .irq_set_wake = mt6397_irq_set_wake, }; static void mt6397_irq_handle_reg(struct mt6397_chip *mt6397, int reg, @@ -179,6 +198,35 @@ static int mt6397_irq_init(struct mt6397_chip *mt6397) return 0; } +#ifdef CONFIG_PM_SLEEP +static int mt6397_irq_suspend(struct device *dev) +{ + struct mt6397_chip *chip = dev_get_drvdata(dev); + + regmap_write(chip->regmap, MT6397_INT_CON0, chip->wake_mask[0]); + regmap_write(chip->regmap, MT6397_INT_CON1, chip->wake_mask[1]); + + enable_irq_wake(chip->irq); + + return 0; +} + +static int mt6397_irq_resume(struct device *dev) +{ + struct mt6397_chip *chip = dev_get_drvdata(dev); + + regmap_write(chip->regmap, MT6397_INT_CON0, chip->irq_masks_cur[0]); + regmap_write(chip->regmap, MT6397_INT_CON1, chip->irq_masks_cur[1]); + + disable_irq_wake(chip->irq); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(mt6397_pm_ops, mt6397_irq_suspend, + mt6397_irq_resume); + static int mt6397_probe(struct platform_device *pdev) { int ret; @@ -233,6 +281,7 @@ static struct platform_driver mt6397_driver = { .driver = { .name = "mt6397", .of_match_table = of_match_ptr(mt6397_of_match), + .pm = &mt6397_pm_ops, }, }; |