diff options
| -rw-r--r-- | drivers/iio/common/hid-sensors/hid-sensor-trigger.c | 75 | ||||
| -rw-r--r-- | drivers/iio/common/hid-sensors/hid-sensor-trigger.h | 5 |
2 files changed, 78 insertions, 2 deletions
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c index 92068cdbf8c7..2f1d535b94c4 100644 --- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c +++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c @@ -22,16 +22,18 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/slab.h> +#include <linux/delay.h> #include <linux/hid-sensor-hub.h> #include <linux/iio/iio.h> #include <linux/iio/trigger.h> #include <linux/iio/sysfs.h> #include "hid-sensor-trigger.h" -int hid_sensor_power_state(struct hid_sensor_common *st, bool state) +static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state) { int state_val; int report_val; + s32 poll_value = 0; if (state) { if (sensor_hub_device_open(st->hsdev)) @@ -47,6 +49,8 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state) st->report_state.report_id, st->report_state.index, HID_USAGE_SENSOR_PROP_REPORTING_STATE_ALL_EVENTS_ENUM); + + poll_value = hid_sensor_read_poll_value(st); } else { if (!atomic_dec_and_test(&st->data_ready)) return 0; @@ -78,10 +82,36 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state) sensor_hub_get_feature(st->hsdev, st->power_state.report_id, st->power_state.index, &state_val); + if (state && poll_value) + msleep_interruptible(poll_value * 2); + return 0; } EXPORT_SYMBOL(hid_sensor_power_state); +int hid_sensor_power_state(struct hid_sensor_common *st, bool state) +{ +#ifdef CONFIG_PM + int ret; + + if (state) + ret = pm_runtime_get_sync(&st->pdev->dev); + else { + pm_runtime_mark_last_busy(&st->pdev->dev); + ret = pm_runtime_put_autosuspend(&st->pdev->dev); + } + if (ret < 0) { + if (state) + pm_runtime_put_noidle(&st->pdev->dev); + return ret; + } + + return 0; +#else + return _hid_sensor_power_state(st, state); +#endif +} + static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig, bool state) { @@ -125,8 +155,21 @@ int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name, attrb->trigger = trig; indio_dev->trig = iio_trigger_get(trig); - return ret; + ret = pm_runtime_set_active(&indio_dev->dev); + if (ret) + goto error_unreg_trigger; + iio_device_set_drvdata(indio_dev, attrb); + pm_suspend_ignore_children(&attrb->pdev->dev, true); + pm_runtime_enable(&attrb->pdev->dev); + /* Default to 3 seconds, but can be changed from sysfs */ + pm_runtime_set_autosuspend_delay(&attrb->pdev->dev, + 3000); + pm_runtime_use_autosuspend(&attrb->pdev->dev); + + return ret; +error_unreg_trigger: + iio_trigger_unregister(trig); error_free_trig: iio_trigger_free(trig); error_ret: @@ -134,6 +177,34 @@ error_ret: } EXPORT_SYMBOL(hid_sensor_setup_trigger); +#ifdef CONFIG_PM +static int hid_sensor_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct iio_dev *indio_dev = platform_get_drvdata(pdev); + struct hid_sensor_common *attrb = iio_device_get_drvdata(indio_dev); + + return _hid_sensor_power_state(attrb, false); +} + +static int hid_sensor_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct iio_dev *indio_dev = platform_get_drvdata(pdev); + struct hid_sensor_common *attrb = iio_device_get_drvdata(indio_dev); + + return _hid_sensor_power_state(attrb, true); +} + +#endif + +const struct dev_pm_ops hid_sensor_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(hid_sensor_suspend, hid_sensor_resume) + SET_RUNTIME_PM_OPS(hid_sensor_suspend, + hid_sensor_resume, NULL) +}; +EXPORT_SYMBOL(hid_sensor_pm_ops); + MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); MODULE_DESCRIPTION("HID Sensor trigger processing"); MODULE_LICENSE("GPL"); diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.h b/drivers/iio/common/hid-sensors/hid-sensor-trigger.h index 0f8e78c249d3..9f4713f42ecb 100644 --- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.h +++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.h @@ -19,6 +19,11 @@ #ifndef _HID_SENSOR_TRIGGER_H #define _HID_SENSOR_TRIGGER_H +#include <linux/pm.h> +#include <linux/pm_runtime.h> + +extern const struct dev_pm_ops hid_sensor_pm_ops; + int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name, struct hid_sensor_common *attrb); void hid_sensor_remove_trigger(struct hid_sensor_common *attrb); |