diff options
| author | Stefan Eichenberger <eichest@gmail.com> | 2023-11-22 19:16:11 +0100 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2024-01-08 01:17:00 +0100 |
| commit | 2f80de657f83a1f6495e557096847f4626d57164 (patch) | |
| tree | b224b556658594a57d31a63a84580013dbdc603a /drivers/rtc/rtc-rv8803.c | |
| parent | 3628d999e31e2e31b51f78b0f68e91275854c179 (diff) | |
rtc: rv8803: Add power management support
Add power management support to the driver. This allows a SoC to wake
from suspend using the nINT provided by the RTC. Only register it as a
wakeup device if the interrupt is provided and handled.
Signed-off-by: Stefan Eichenberger <eichest@gmail.com>
Link: https://lore.kernel.org/r/20231122181611.164792-1-eichest@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/rtc-rv8803.c')
| -rw-r--r-- | drivers/rtc/rtc-rv8803.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-rv8803.c b/drivers/rtc/rtc-rv8803.c index 1a3ec1bb5b81..11e6b0d31f5d 100644 --- a/drivers/rtc/rtc-rv8803.c +++ b/drivers/rtc/rtc-rv8803.c @@ -17,6 +17,7 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/rtc.h> +#include <linux/pm_wakeirq.h> #define RV8803_I2C_TRY_COUNT 4 @@ -607,6 +608,28 @@ static int rv8803_regs_configure(struct rv8803_data *rv8803) return 0; } +static int rv8803_resume(struct device *dev) +{ + struct rv8803_data *rv8803 = dev_get_drvdata(dev); + + if (rv8803->client->irq > 0 && device_may_wakeup(dev)) + disable_irq_wake(rv8803->client->irq); + + return 0; +} + +static int rv8803_suspend(struct device *dev) +{ + struct rv8803_data *rv8803 = dev_get_drvdata(dev); + + if (rv8803->client->irq > 0 && device_may_wakeup(dev)) + enable_irq_wake(rv8803->client->irq); + + return 0; +} + +static DEFINE_SIMPLE_DEV_PM_OPS(rv8803_pm_ops, rv8803_suspend, rv8803_resume); + static const struct i2c_device_id rv8803_id[] = { { "rv8803", rv_8803 }, { "rv8804", rx_8804 }, @@ -683,6 +706,11 @@ static int rv8803_probe(struct i2c_client *client) if (err) { dev_warn(&client->dev, "unable to request IRQ, alarms disabled\n"); client->irq = 0; + } else { + device_init_wakeup(&client->dev, true); + err = dev_pm_set_wake_irq(&client->dev, client->irq); + if (err) + dev_err(&client->dev, "failed to set wake IRQ\n"); } } if (!client->irq) @@ -737,6 +765,7 @@ static struct i2c_driver rv8803_driver = { .driver = { .name = "rtc-rv8803", .of_match_table = of_match_ptr(rv8803_of_match), + .pm = &rv8803_pm_ops, }, .probe = rv8803_probe, .id_table = rv8803_id, |