* [PATCH] media: i2c: imx415: Replace streaming flag with runtime PM check
@ 2023-09-14 17:46 Laurent Pinchart
2023-09-18 12:10 ` Laurent Pinchart
2023-10-02 11:37 ` Michael Riesch
0 siblings, 2 replies; 4+ messages in thread
From: Laurent Pinchart @ 2023-09-14 17:46 UTC (permalink / raw)
To: linux-media; +Cc: Sakari Ailus, Michael Riesch
The streaming flag in the driver private structure is used for the sole
purpose of gating register writes when setting a V4L2 control. This is
better handled by checking if the sensor is powered up using the runtime
PM API. Do so and drop the streaming flag.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
drivers/media/i2c/imx415.c | 32 +++++++++++++++-----------------
1 file changed, 15 insertions(+), 17 deletions(-)
diff --git a/drivers/media/i2c/imx415.c b/drivers/media/i2c/imx415.c
index 3f00172df3cc..346f623c1331 100644
--- a/drivers/media/i2c/imx415.c
+++ b/drivers/media/i2c/imx415.c
@@ -353,8 +353,6 @@ struct imx415 {
const struct imx415_clk_params *clk_params;
- bool streaming;
-
struct v4l2_subdev subdev;
struct media_pad pad;
@@ -542,8 +540,9 @@ static int imx415_s_ctrl(struct v4l2_ctrl *ctrl)
struct v4l2_subdev_state *state;
unsigned int vmax;
unsigned int flip;
+ int ret;
- if (!sensor->streaming)
+ if (!pm_runtime_get_if_in_use(sensor->dev))
return 0;
state = v4l2_subdev_get_locked_active_state(&sensor->subdev);
@@ -554,24 +553,33 @@ static int imx415_s_ctrl(struct v4l2_ctrl *ctrl)
/* clamp the exposure value to VMAX. */
vmax = format->height + sensor->vblank->cur.val;
ctrl->val = min_t(int, ctrl->val, vmax);
- return imx415_write(sensor, IMX415_SHR0, vmax - ctrl->val);
+ ret = imx415_write(sensor, IMX415_SHR0, vmax - ctrl->val);
+ break;
case V4L2_CID_ANALOGUE_GAIN:
/* analogue gain in 0.3 dB step size */
return imx415_write(sensor, IMX415_GAIN_PCG_0, ctrl->val);
+ break;
case V4L2_CID_HFLIP:
case V4L2_CID_VFLIP:
flip = (sensor->hflip->val << IMX415_HREVERSE_SHIFT) |
(sensor->vflip->val << IMX415_VREVERSE_SHIFT);
- return imx415_write(sensor, IMX415_REVERSE, flip);
+ ret = imx415_write(sensor, IMX415_REVERSE, flip);
+ break;
case V4L2_CID_TEST_PATTERN:
- return imx415_set_testpattern(sensor, ctrl->val);
+ ret = imx415_set_testpattern(sensor, ctrl->val);
+ break;
default:
- return -EINVAL;
+ ret = -EINVAL;
+ break;
}
+
+ pm_runtime_put(sensor->dev);
+
+ return ret;
}
static const struct v4l2_ctrl_ops imx415_ctrl_ops = {
@@ -766,8 +774,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
pm_runtime_mark_last_busy(sensor->dev);
pm_runtime_put_autosuspend(sensor->dev);
- sensor->streaming = false;
-
goto unlock;
}
@@ -779,13 +785,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
if (ret)
goto err_pm;
- /*
- * Set streaming to true to ensure __v4l2_ctrl_handler_setup() will set
- * the controls. The flag is reset to false further down if an error
- * occurs.
- */
- sensor->streaming = true;
-
ret = __v4l2_ctrl_handler_setup(&sensor->ctrls);
if (ret < 0)
goto err_pm;
@@ -807,7 +806,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
* likely has no other chance to recover.
*/
pm_runtime_put_sync(sensor->dev);
- sensor->streaming = false;
goto unlock;
}
base-commit: 0bb80ecc33a8fb5a682236443c1e740d5c917d1d
--
Regards,
Laurent Pinchart
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] media: i2c: imx415: Replace streaming flag with runtime PM check
2023-09-14 17:46 [PATCH] media: i2c: imx415: Replace streaming flag with runtime PM check Laurent Pinchart
@ 2023-09-18 12:10 ` Laurent Pinchart
2023-09-18 12:19 ` Sakari Ailus
2023-10-02 11:37 ` Michael Riesch
1 sibling, 1 reply; 4+ messages in thread
From: Laurent Pinchart @ 2023-09-18 12:10 UTC (permalink / raw)
To: linux-media; +Cc: Sakari Ailus, Michael Riesch
On Thu, Sep 14, 2023 at 08:46:00PM +0300, Laurent Pinchart wrote:
> The streaming flag in the driver private structure is used for the sole
> purpose of gating register writes when setting a V4L2 control. This is
> better handled by checking if the sensor is powered up using the runtime
> PM API. Do so and drop the streaming flag.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---
> drivers/media/i2c/imx415.c | 32 +++++++++++++++-----------------
> 1 file changed, 15 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/media/i2c/imx415.c b/drivers/media/i2c/imx415.c
> index 3f00172df3cc..346f623c1331 100644
> --- a/drivers/media/i2c/imx415.c
> +++ b/drivers/media/i2c/imx415.c
> @@ -353,8 +353,6 @@ struct imx415 {
>
> const struct imx415_clk_params *clk_params;
>
> - bool streaming;
> -
> struct v4l2_subdev subdev;
> struct media_pad pad;
>
> @@ -542,8 +540,9 @@ static int imx415_s_ctrl(struct v4l2_ctrl *ctrl)
> struct v4l2_subdev_state *state;
> unsigned int vmax;
> unsigned int flip;
> + int ret;
>
> - if (!sensor->streaming)
> + if (!pm_runtime_get_if_in_use(sensor->dev))
> return 0;
>
> state = v4l2_subdev_get_locked_active_state(&sensor->subdev);
> @@ -554,24 +553,33 @@ static int imx415_s_ctrl(struct v4l2_ctrl *ctrl)
> /* clamp the exposure value to VMAX. */
> vmax = format->height + sensor->vblank->cur.val;
> ctrl->val = min_t(int, ctrl->val, vmax);
> - return imx415_write(sensor, IMX415_SHR0, vmax - ctrl->val);
> + ret = imx415_write(sensor, IMX415_SHR0, vmax - ctrl->val);
> + break;
>
> case V4L2_CID_ANALOGUE_GAIN:
> /* analogue gain in 0.3 dB step size */
> return imx415_write(sensor, IMX415_GAIN_PCG_0, ctrl->val);
This should be
ret = imx415_write(sensor, IMX415_GAIN_PCG_0, ctrl->val);
Sakari, would you like a v2, or would you prefer fixing this locally ?
> + break;
>
> case V4L2_CID_HFLIP:
> case V4L2_CID_VFLIP:
> flip = (sensor->hflip->val << IMX415_HREVERSE_SHIFT) |
> (sensor->vflip->val << IMX415_VREVERSE_SHIFT);
> - return imx415_write(sensor, IMX415_REVERSE, flip);
> + ret = imx415_write(sensor, IMX415_REVERSE, flip);
> + break;
>
> case V4L2_CID_TEST_PATTERN:
> - return imx415_set_testpattern(sensor, ctrl->val);
> + ret = imx415_set_testpattern(sensor, ctrl->val);
> + break;
>
> default:
> - return -EINVAL;
> + ret = -EINVAL;
> + break;
> }
> +
> + pm_runtime_put(sensor->dev);
> +
> + return ret;
> }
>
> static const struct v4l2_ctrl_ops imx415_ctrl_ops = {
> @@ -766,8 +774,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
> pm_runtime_mark_last_busy(sensor->dev);
> pm_runtime_put_autosuspend(sensor->dev);
>
> - sensor->streaming = false;
> -
> goto unlock;
> }
>
> @@ -779,13 +785,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
> if (ret)
> goto err_pm;
>
> - /*
> - * Set streaming to true to ensure __v4l2_ctrl_handler_setup() will set
> - * the controls. The flag is reset to false further down if an error
> - * occurs.
> - */
> - sensor->streaming = true;
> -
> ret = __v4l2_ctrl_handler_setup(&sensor->ctrls);
> if (ret < 0)
> goto err_pm;
> @@ -807,7 +806,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
> * likely has no other chance to recover.
> */
> pm_runtime_put_sync(sensor->dev);
> - sensor->streaming = false;
>
> goto unlock;
> }
>
> base-commit: 0bb80ecc33a8fb5a682236443c1e740d5c917d1d
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] media: i2c: imx415: Replace streaming flag with runtime PM check
2023-09-18 12:10 ` Laurent Pinchart
@ 2023-09-18 12:19 ` Sakari Ailus
0 siblings, 0 replies; 4+ messages in thread
From: Sakari Ailus @ 2023-09-18 12:19 UTC (permalink / raw)
To: Laurent Pinchart; +Cc: linux-media, Michael Riesch
On Mon, Sep 18, 2023 at 03:10:07PM +0300, Laurent Pinchart wrote:
> On Thu, Sep 14, 2023 at 08:46:00PM +0300, Laurent Pinchart wrote:
> > The streaming flag in the driver private structure is used for the sole
> > purpose of gating register writes when setting a V4L2 control. This is
> > better handled by checking if the sensor is powered up using the runtime
> > PM API. Do so and drop the streaming flag.
> >
> > Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > ---
> > drivers/media/i2c/imx415.c | 32 +++++++++++++++-----------------
> > 1 file changed, 15 insertions(+), 17 deletions(-)
> >
> > diff --git a/drivers/media/i2c/imx415.c b/drivers/media/i2c/imx415.c
> > index 3f00172df3cc..346f623c1331 100644
> > --- a/drivers/media/i2c/imx415.c
> > +++ b/drivers/media/i2c/imx415.c
> > @@ -353,8 +353,6 @@ struct imx415 {
> >
> > const struct imx415_clk_params *clk_params;
> >
> > - bool streaming;
> > -
> > struct v4l2_subdev subdev;
> > struct media_pad pad;
> >
> > @@ -542,8 +540,9 @@ static int imx415_s_ctrl(struct v4l2_ctrl *ctrl)
> > struct v4l2_subdev_state *state;
> > unsigned int vmax;
> > unsigned int flip;
> > + int ret;
> >
> > - if (!sensor->streaming)
> > + if (!pm_runtime_get_if_in_use(sensor->dev))
> > return 0;
> >
> > state = v4l2_subdev_get_locked_active_state(&sensor->subdev);
> > @@ -554,24 +553,33 @@ static int imx415_s_ctrl(struct v4l2_ctrl *ctrl)
> > /* clamp the exposure value to VMAX. */
> > vmax = format->height + sensor->vblank->cur.val;
> > ctrl->val = min_t(int, ctrl->val, vmax);
> > - return imx415_write(sensor, IMX415_SHR0, vmax - ctrl->val);
> > + ret = imx415_write(sensor, IMX415_SHR0, vmax - ctrl->val);
> > + break;
> >
> > case V4L2_CID_ANALOGUE_GAIN:
> > /* analogue gain in 0.3 dB step size */
> > return imx415_write(sensor, IMX415_GAIN_PCG_0, ctrl->val);
>
> This should be
>
> ret = imx415_write(sensor, IMX415_GAIN_PCG_0, ctrl->val);
>
> Sakari, would you like a v2, or would you prefer fixing this locally ?
I can fix it here, it's easier that way.
>
> > + break;
> >
> > case V4L2_CID_HFLIP:
> > case V4L2_CID_VFLIP:
> > flip = (sensor->hflip->val << IMX415_HREVERSE_SHIFT) |
> > (sensor->vflip->val << IMX415_VREVERSE_SHIFT);
> > - return imx415_write(sensor, IMX415_REVERSE, flip);
> > + ret = imx415_write(sensor, IMX415_REVERSE, flip);
> > + break;
> >
> > case V4L2_CID_TEST_PATTERN:
> > - return imx415_set_testpattern(sensor, ctrl->val);
> > + ret = imx415_set_testpattern(sensor, ctrl->val);
> > + break;
> >
> > default:
> > - return -EINVAL;
> > + ret = -EINVAL;
> > + break;
> > }
> > +
> > + pm_runtime_put(sensor->dev);
> > +
> > + return ret;
> > }
> >
> > static const struct v4l2_ctrl_ops imx415_ctrl_ops = {
> > @@ -766,8 +774,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
> > pm_runtime_mark_last_busy(sensor->dev);
> > pm_runtime_put_autosuspend(sensor->dev);
> >
> > - sensor->streaming = false;
> > -
> > goto unlock;
> > }
> >
> > @@ -779,13 +785,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
> > if (ret)
> > goto err_pm;
> >
> > - /*
> > - * Set streaming to true to ensure __v4l2_ctrl_handler_setup() will set
> > - * the controls. The flag is reset to false further down if an error
> > - * occurs.
> > - */
> > - sensor->streaming = true;
> > -
> > ret = __v4l2_ctrl_handler_setup(&sensor->ctrls);
> > if (ret < 0)
> > goto err_pm;
> > @@ -807,7 +806,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
> > * likely has no other chance to recover.
> > */
> > pm_runtime_put_sync(sensor->dev);
> > - sensor->streaming = false;
> >
> > goto unlock;
> > }
> >
> > base-commit: 0bb80ecc33a8fb5a682236443c1e740d5c917d1d
>
> --
> Regards,
>
> Laurent Pinchart
--
Sakari Ailus
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] media: i2c: imx415: Replace streaming flag with runtime PM check
2023-09-14 17:46 [PATCH] media: i2c: imx415: Replace streaming flag with runtime PM check Laurent Pinchart
2023-09-18 12:10 ` Laurent Pinchart
@ 2023-10-02 11:37 ` Michael Riesch
1 sibling, 0 replies; 4+ messages in thread
From: Michael Riesch @ 2023-10-02 11:37 UTC (permalink / raw)
To: Laurent Pinchart, linux-media; +Cc: Sakari Ailus
Hi Laurent,
On 9/14/23 19:46, Laurent Pinchart wrote:
> The streaming flag in the driver private structure is used for the sole
> purpose of gating register writes when setting a V4L2 control. This is
> better handled by checking if the sensor is powered up using the runtime
> PM API. Do so and drop the streaming flag.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
LGTM! With the fixup in the V4L2_CID_ANALOGUE_GAIN case you already
mentioned applied
Acked-by: Michael Riesch <michael.riesch@wolfvision.net>
Thanks and regards,
Michael
> ---
> drivers/media/i2c/imx415.c | 32 +++++++++++++++-----------------
> 1 file changed, 15 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/media/i2c/imx415.c b/drivers/media/i2c/imx415.c
> index 3f00172df3cc..346f623c1331 100644
> --- a/drivers/media/i2c/imx415.c
> +++ b/drivers/media/i2c/imx415.c
> @@ -353,8 +353,6 @@ struct imx415 {
>
> const struct imx415_clk_params *clk_params;
>
> - bool streaming;
> -
> struct v4l2_subdev subdev;
> struct media_pad pad;
>
> @@ -542,8 +540,9 @@ static int imx415_s_ctrl(struct v4l2_ctrl *ctrl)
> struct v4l2_subdev_state *state;
> unsigned int vmax;
> unsigned int flip;
> + int ret;
>
> - if (!sensor->streaming)
> + if (!pm_runtime_get_if_in_use(sensor->dev))
> return 0;
>
> state = v4l2_subdev_get_locked_active_state(&sensor->subdev);
> @@ -554,24 +553,33 @@ static int imx415_s_ctrl(struct v4l2_ctrl *ctrl)
> /* clamp the exposure value to VMAX. */
> vmax = format->height + sensor->vblank->cur.val;
> ctrl->val = min_t(int, ctrl->val, vmax);
> - return imx415_write(sensor, IMX415_SHR0, vmax - ctrl->val);
> + ret = imx415_write(sensor, IMX415_SHR0, vmax - ctrl->val);
> + break;
>
> case V4L2_CID_ANALOGUE_GAIN:
> /* analogue gain in 0.3 dB step size */
> return imx415_write(sensor, IMX415_GAIN_PCG_0, ctrl->val);
> + break;
>
> case V4L2_CID_HFLIP:
> case V4L2_CID_VFLIP:
> flip = (sensor->hflip->val << IMX415_HREVERSE_SHIFT) |
> (sensor->vflip->val << IMX415_VREVERSE_SHIFT);
> - return imx415_write(sensor, IMX415_REVERSE, flip);
> + ret = imx415_write(sensor, IMX415_REVERSE, flip);
> + break;
>
> case V4L2_CID_TEST_PATTERN:
> - return imx415_set_testpattern(sensor, ctrl->val);
> + ret = imx415_set_testpattern(sensor, ctrl->val);
> + break;
>
> default:
> - return -EINVAL;
> + ret = -EINVAL;
> + break;
> }
> +
> + pm_runtime_put(sensor->dev);
> +
> + return ret;
> }
>
> static const struct v4l2_ctrl_ops imx415_ctrl_ops = {
> @@ -766,8 +774,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
> pm_runtime_mark_last_busy(sensor->dev);
> pm_runtime_put_autosuspend(sensor->dev);
>
> - sensor->streaming = false;
> -
> goto unlock;
> }
>
> @@ -779,13 +785,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
> if (ret)
> goto err_pm;
>
> - /*
> - * Set streaming to true to ensure __v4l2_ctrl_handler_setup() will set
> - * the controls. The flag is reset to false further down if an error
> - * occurs.
> - */
> - sensor->streaming = true;
> -
> ret = __v4l2_ctrl_handler_setup(&sensor->ctrls);
> if (ret < 0)
> goto err_pm;
> @@ -807,7 +806,6 @@ static int imx415_s_stream(struct v4l2_subdev *sd, int enable)
> * likely has no other chance to recover.
> */
> pm_runtime_put_sync(sensor->dev);
> - sensor->streaming = false;
>
> goto unlock;
> }
>
> base-commit: 0bb80ecc33a8fb5a682236443c1e740d5c917d1d
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-10-02 11:37 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2023-09-14 17:46 [PATCH] media: i2c: imx415: Replace streaming flag with runtime PM check Laurent Pinchart
2023-09-18 12:10 ` Laurent Pinchart
2023-09-18 12:19 ` Sakari Ailus
2023-10-02 11:37 ` Michael Riesch
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