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Message-ID: <3pnxcrz3xzuonilqnkkxrdelwyuu2zr4dacr4snwq666guupty@z3txo76p35ur>
Date: Wed, 30 Apr 2025 11:15:06 +0200
From: Richard Leitner <richard.leitner@...ux.dev>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: Dave Stevenson <dave.stevenson@...pberrypi.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>, Lee Jones <lee@...nel.org>, Pavel Machek <pavel@...nel.org>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>, Hans Verkuil <hverkuil@...all.nl>, linux-media@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-leds@...r.kernel.org
Subject: Re: [PATCH v3 9/9] media: i2c: ov9282: add strobe_source v4l2 control
Hi Sakari,
thanks for your comment!
On Wed, Apr 30, 2025 at 08:39:43AM +0000, Sakari Ailus wrote:
> Hi Richard,
>
> On Tue, Apr 29, 2025 at 02:59:14PM +0200, Richard Leitner wrote:
> > Add read-only V4L2_CID_FLASH_STROBE_SOURCE control. Its value is fixed
> > to V4L2_FLASH_STROBE_SOURCE_EXTERNAL as the camera sensor triggers the
> > strobe based on its register settings.
> >
> > Signed-off-by: Richard Leitner <richard.leitner@...ux.dev>
> > ---
> > drivers/media/i2c/ov9282.c | 8 ++++++++
> > 1 file changed, 8 insertions(+)
> >
> > diff --git a/drivers/media/i2c/ov9282.c b/drivers/media/i2c/ov9282.c
> > index 5ddbfc51586111fbd2e17b739fb3d28bfb0aee1e..34ea903a18dadeeebd497a4a8858abf12b598717 100644
> > --- a/drivers/media/i2c/ov9282.c
> > +++ b/drivers/media/i2c/ov9282.c
> > @@ -1367,6 +1367,7 @@ static int ov9282_init_controls(struct ov9282 *ov9282)
> > struct v4l2_ctrl_handler *ctrl_hdlr = &ov9282->ctrl_handler;
> > const struct ov9282_mode *mode = ov9282->cur_mode;
> > struct v4l2_fwnode_device_properties props;
> > + struct v4l2_ctrl *ctrl;
> > u32 hblank_min;
> > u32 lpfr;
> > int ret;
> > @@ -1446,6 +1447,13 @@ static int ov9282_init_controls(struct ov9282 *ov9282)
> > v4l2_ctrl_new_std(ctrl_hdlr, &ov9282_ctrl_ops, V4L2_CID_FLASH_DURATION,
> > 0, 13900, 1, 8);
> >
> > + ctrl = v4l2_ctrl_new_std_menu(ctrl_hdlr, &ov9282_ctrl_ops,
> > + V4L2_CID_FLASH_STROBE_SOURCE,
> > + V4L2_FLASH_STROBE_SOURCE_EXTERNAL,
> > + ~(1 << V4L2_FLASH_STROBE_SOURCE_EXTERNAL),
> > + V4L2_FLASH_STROBE_SOURCE_EXTERNAL);
> > + ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
>
> Note that v4l2_ctrl_new_std_menu() may return NULL.
Good catch. Thanks! Will add a check in v4.
>
> > +
> > ret = v4l2_fwnode_device_parse(ov9282->dev, &props);
> > if (!ret) {
> > /* Failure sets ctrl_hdlr->error, which we check afterwards anyway */
> >
>
> --
> Sakari Ailus
regards;rl
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