diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2022-12-03 23:16:25 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2023-02-08 10:24:35 +0300 |
| commit | b3118a942c820c8d94a11ffd3d950660b3566d35 (patch) | |
| tree | 9e706e3a265d76daa83978e546e7c6bbeba333d2 /drivers/staging | |
| parent | 4272fd7ae69aef86aa4c9f7d49a9d15beb50547e (diff) | |
| download | linux-b3118a942c820c8d94a11ffd3d950660b3566d35.tar.xz | |
media: atomisp: ov2722: Power on sensor from set_fmt() callback
Depending on which order userspace makes various v4l2 calls, the sensor
might still be powered down when set_fmt is called.
What should really happen here is delay the writing of the mode-related
registers till streaming is started, but for now use the same quick fix
as the atomisp_ov2680 / atomisp_gc0310 code and call power_up() from
set_fmt() in combination with keeping track of the power-state to avoid
doing the power-up sequence twice.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/media/atomisp/i2c/atomisp-ov2722.c | 12 | ||||
| -rw-r--r-- | drivers/staging/media/atomisp/i2c/ov2722.h | 2 |
2 files changed, 13 insertions, 1 deletions
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c index e09c80d1f9ec..5d2e6e2e72f0 100644 --- a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c +++ b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c @@ -528,6 +528,9 @@ static int power_up(struct v4l2_subdev *sd) return -ENODEV; } + if (dev->power_on == 1) + return 0; /* Already on */ + /* power control */ ret = power_ctrl(sd, 1); if (ret) @@ -552,6 +555,7 @@ static int power_up(struct v4l2_subdev *sd) /* according to DS, 20ms is needed between PWDN and i2c access */ msleep(20); + dev->power_on = 1; return 0; fail_clk: @@ -575,6 +579,9 @@ static int power_down(struct v4l2_subdev *sd) return -ENODEV; } + if (dev->power_on == 0) + return 0; /* Already off */ + ret = dev->platform_data->flisclk_ctrl(sd, 0); if (ret) dev_err(&client->dev, "flisclk failed\n"); @@ -592,6 +599,7 @@ static int power_down(struct v4l2_subdev *sd) if (ret) dev_err(&client->dev, "vprog failed.\n"); + dev->power_on = 0; return ret; } @@ -669,6 +677,9 @@ static int ov2722_set_fmt(struct v4l2_subdev *sd, mutex_lock(&dev->input_lock); + /* s_power has not been called yet for std v4l2 clients (camorama) */ + power_up(sd); + dev->pixels_per_line = dev->res->pixels_per_line; dev->lines_per_frame = dev->res->lines_per_frame; @@ -959,6 +970,7 @@ static int ov2722_probe(struct i2c_client *client) return -ENOMEM; mutex_init(&dev->input_lock); + dev->power_on = -1; dev->res = &ov2722_res_preview[0]; v4l2_i2c_subdev_init(&dev->sd, client, &ov2722_ops); diff --git a/drivers/staging/media/atomisp/i2c/ov2722.h b/drivers/staging/media/atomisp/i2c/ov2722.h index 020743a944c4..640d3ffcaa5c 100644 --- a/drivers/staging/media/atomisp/i2c/ov2722.h +++ b/drivers/staging/media/atomisp/i2c/ov2722.h @@ -198,7 +198,7 @@ struct ov2722_device { struct ov2722_resolution *res; struct camera_sensor_platform_data *platform_data; - int run_mode; + int power_on; u16 pixels_per_line; u16 lines_per_frame; u8 type; |