linux-kernel - Re: [PATCH 5/5] media: i2c: alvium: Move V4L2_CID_GAIN to V4L2_CID_ANALOG

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Date: Fri, 26 Apr 2024 10:49:59 +0000
From: Sakari Ailus <sakari.ailus@....fi>
To: Tommaso Merciai <tomm.merciai@...il.com>
Cc: martin.hecht@...et.eu, michael.roeder@...et.eu,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] media: i2c: alvium: Move V4L2_CID_GAIN to
 V4L2_CID_ANALOG_GAIN

Hi Tommaso,

On Fri, Apr 26, 2024 at 10:41:36AM +0200, Tommaso Merciai wrote:
> Hi Sakari,
> 
> On Fri, Apr 26, 2024 at 07:13:06AM +0000, Sakari Ailus wrote:
> > Hi Tommaso,
> > 
> > On Fri, Apr 26, 2024 at 09:09:35AM +0200, Tommaso Merciai wrote:
> > > Hi Sakari,
> > > Thanks for your review.
> > > 
> > > On Wed, Apr 24, 2024 at 06:11:26PM +0000, Sakari Ailus wrote:
> > > > Hi Tommaso,
> > > > 
> > > > On Tue, Apr 16, 2024 at 04:19:05PM +0200, Tommaso Merciai wrote:
> > > > > Into alvium cameras REG_BCRM_GAIN_RW control the analog gain.
> > > > > Let's use the right V4L2_CID_ANALOGUE_GAIN ctrl.
> > > > > 
> > > > > Signed-off-by: Tommaso Merciai <tomm.merciai@...il.com>
> > > > > ---
> > > > >  drivers/media/i2c/alvium-csi2.c | 6 +++---
> > > > >  1 file changed, 3 insertions(+), 3 deletions(-)
> > > > > 
> > > > > diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c
> > > > > index 30ef9b905211..56d64f27df72 100644
> > > > > --- a/drivers/media/i2c/alvium-csi2.c
> > > > > +++ b/drivers/media/i2c/alvium-csi2.c
> > > > > @@ -1993,7 +1993,7 @@ static int alvium_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
> > > > >  	int val;
> > > > >  
> > > > >  	switch (ctrl->id) {
> > > > > -	case V4L2_CID_GAIN:
> > > > > +	case V4L2_CID_ANALOGUE_GAIN:
> > > > >  		val = alvium_get_gain(alvium);
> > > > >  		if (val < 0)
> > > > >  			return val;
> > > > > @@ -2025,7 +2025,7 @@ static int alvium_s_ctrl(struct v4l2_ctrl *ctrl)
> > > > >  		return 0;
> > > > >  
> > > > >  	switch (ctrl->id) {
> > > > > -	case V4L2_CID_GAIN:
> > > > > +	case V4L2_CID_ANALOGUE_GAIN:
> > > > >  		ret = alvium_set_ctrl_gain(alvium, ctrl->val);
> > > > >  		break;
> > > > >  	case V4L2_CID_AUTOGAIN:
> > > > > @@ -2154,7 +2154,7 @@ static int alvium_ctrl_init(struct alvium_dev *alvium)
> > > > >  
> > > > >  	if (alvium->avail_ft.gain) {
> > > > >  		ctrls->gain = v4l2_ctrl_new_std(hdl, ops,
> > > > > -						V4L2_CID_GAIN,
> > > > > +						V4L2_CID_ANALOGUE_GAIN,
> > > > >  						alvium->min_gain,
> > > > >  						alvium->max_gain,
> > > > >  						alvium->inc_gain,
> > > > 
> > > > This looks like a bugfix. Shouldn't it be cc'd to stable as well? A Fixes:
> > > > tag would be nice, too.
> > > 
> > > Fully agree.
> > > Plan is to add in v2 Fixes: 0a7af872915e ("media: i2c: Add support for alvium camera")
> > > like you suggest and stable@...r.kernel.org in CC.
> > 
> > Just make sure git send-email won't actually cc the patch to the stable
> > e-mail address. Cc: tag is enough. The git config option is
> > sendemail.suppresscc.
> 
> Sorry, just to clarify.
> You are suggesting just to add sendemail.suppresscc. option right?
> No cc stable@...r.kernel.org

Yes, and adding a Cc: stable@...r.kernel.org tag.

-- 
Regards,

Sakari Ailus