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HID RTC: Open sensor hub open close 

Open sensor hub when module is loaded and close when module is removed.
This helps saving power by opening HID transport only when there is an
user.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
hifive-unleashed-5.1
Srinivas Pandruvada 2013-10-01 17:22:00 +01:00 committed by Jonathan Cameron
parent 0a440ee9b6
commit 476b9547e8
1 changed files with 14 additions and 1 deletions
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15
drivers/rtc/rtc-hid-sensor-time.c
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@ -275,6 +275,12 @@ static int hid_time_probe(struct platform_device *pdev)
return ret;
}
ret = sensor_hub_device_open(hsdev);
if (ret) {
dev_err(&pdev->dev, "failed to open sensor hub device!\n");
goto err_open;
}
time_state->rtc = devm_rtc_device_register(&pdev->dev,
"hid-sensor-time", &hid_time_rtc_ops,
THIS_MODULE);
@ -282,17 +288,24 @@ static int hid_time_probe(struct platform_device *pdev)
if (IS_ERR_OR_NULL(time_state->rtc)) {
ret = time_state->rtc ? PTR_ERR(time_state->rtc) : -ENODEV;
time_state->rtc = NULL;
sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TIME);
dev_err(&pdev->dev, "rtc device register failed!\n");
goto err_rtc;
}
return ret;
err_rtc:
sensor_hub_device_close(hsdev);
err_open:
sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TIME);
return ret;
}
static int hid_time_remove(struct platform_device *pdev)
{
struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
sensor_hub_device_close(hsdev);
sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TIME);
return 0;