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73 lines
2.0 KiB
Diff
73 lines
2.0 KiB
Diff
From 0ffac4f697e56f9853250674f09bd28c2a43083a Mon Sep 17 00:00:00 2001
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From: Andrey Skvortsov <andrej.skvortzov@gmail.com>
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Date: Mon, 14 Aug 2023 13:27:08 +0300
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Subject: media: gc2145: implement system suspend
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If system was suspended while camera sensor was used, data and
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interrupts were still coming from sensor and that caused unstable
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system. Sometimes system hanged during a resume.
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Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
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---
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drivers/media/i2c/gc2145.c | 37 +++++++++++++++++++++++++++++++++++++
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1 file changed, 37 insertions(+)
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diff --git a/drivers/media/i2c/gc2145.c b/drivers/media/i2c/gc2145.c
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index 749dce832aa0..429d86bf5f01 100644
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--- a/drivers/media/i2c/gc2145.c
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+++ b/drivers/media/i2c/gc2145.c
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@@ -2275,6 +2275,42 @@ static void gc2145_remove(struct i2c_client *client)
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v4l2_ctrl_handler_free(&sensor->ctrls.handler);
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}
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+static int gc2145_sensor_suspend(struct device *dev)
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+{
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+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
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+ struct gc2145_dev *sensor = to_gc2145_dev(sd);
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+
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+ mutex_lock(&sensor->lock);
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+ if (sensor->streaming)
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+ gc2145_set_stream(sensor, false);
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+ mutex_unlock(&sensor->lock);
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+
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+ return 0;
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+}
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+
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+static int gc2145_sensor_resume(struct device *dev)
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+{
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+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
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+ struct gc2145_dev *sensor = to_gc2145_dev(sd);
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+ int ret = 0;
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+
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+ mutex_lock(&sensor->lock);
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+ if (sensor->streaming) {
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+ ret = gc2145_set_stream(sensor, true);
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+ if (ret) {
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+ gc2145_set_stream(sensor, false);
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+ sensor->streaming = false;
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+ }
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+ }
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+ mutex_unlock(&sensor->lock);
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+
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+ return ret;
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+}
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+
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+static const struct dev_pm_ops gc2145_pm_ops = {
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+ SET_SYSTEM_SLEEP_PM_OPS(gc2145_sensor_suspend, gc2145_sensor_resume)
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+};
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+
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static const struct i2c_device_id gc2145_id[] = {
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{"gc2145", 0},
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{},
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@@ -2291,6 +2327,7 @@ static struct i2c_driver gc2145_i2c_driver = {
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.driver = {
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.name = "gc2145",
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.of_match_table = gc2145_dt_ids,
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+ .pm = &gc2145_pm_ops,
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},
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.id_table = gc2145_id,
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.probe = gc2145_probe,
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--
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2.35.3
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