diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2022-10-16 20:49:43 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-11-25 08:17:08 +0000 |
| commit | c5fafbadaeae0303514e194f37347a461577d0fb (patch) | |
| tree | e31a2861796e2df41020a464c5133c3a9a81f2da /drivers/staging | |
| parent | eb314d873a6d7cd0e7ec1e58906035f8cb15d303 (diff) | |
media: atomisp: gc0310: 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 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-gc0310.c | 14 | ||||
| -rw-r--r-- | drivers/staging/media/atomisp/i2c/gc0310.h | 1 |
2 files changed, 13 insertions, 2 deletions
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c b/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c index 783f1b88ebf2..87a634bf9ff5 100644 --- a/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c +++ b/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c @@ -786,8 +786,6 @@ static int gpio_ctrl(struct v4l2_subdev *sd, bool flag) return ret; } -static int power_down(struct v4l2_subdev *sd); - static int power_up(struct v4l2_subdev *sd) { struct gc0310_device *dev = to_gc0310_sensor(sd); @@ -800,6 +798,9 @@ static int power_up(struct v4l2_subdev *sd) return -ENODEV; } + if (dev->power_on) + return 0; /* Already on */ + /* power control */ ret = power_ctrl(sd, 1); if (ret) @@ -820,6 +821,7 @@ static int power_up(struct v4l2_subdev *sd) msleep(100); + dev->power_on = true; return 0; fail_gpio: @@ -844,6 +846,9 @@ static int power_down(struct v4l2_subdev *sd) return -ENODEV; } + if (!dev->power_on) + return 0; /* Already off */ + /* gpio ctrl */ ret = gpio_ctrl(sd, 0); if (ret) { @@ -861,6 +866,7 @@ static int power_down(struct v4l2_subdev *sd) if (ret) dev_err(&client->dev, "vprog failed.\n"); + dev->power_on = false; return ret; } @@ -935,6 +941,9 @@ static int gc0310_set_fmt(struct v4l2_subdev *sd, return 0; } + /* s_power has not been called yet for std v4l2 clients (camorama) */ + power_up(sd); + dev_dbg(&client->dev, "%s: before gc0310_write_reg_array %s\n", __func__, dev->res->desc); ret = startup(sd); @@ -1073,6 +1082,7 @@ static int gc0310_s_config(struct v4l2_subdev *sd, * as first power on by board may not fulfill the * power on sequqence needed by the module */ + dev->power_on = true; /* force power_down() to run */ ret = power_down(sd); if (ret) { dev_err(&client->dev, "gc0310 power-off err.\n"); diff --git a/drivers/staging/media/atomisp/i2c/gc0310.h b/drivers/staging/media/atomisp/i2c/gc0310.h index db643ebc3909..4b9ce681bd93 100644 --- a/drivers/staging/media/atomisp/i2c/gc0310.h +++ b/drivers/staging/media/atomisp/i2c/gc0310.h @@ -152,6 +152,7 @@ struct gc0310_device { int vt_pix_clk_freq_mhz; struct gc0310_resolution *res; u8 type; + bool power_on; }; enum gc0310_tok_type { |