[PATCH 2/7] drm: adv7511: Add max_mode_clock variable to struct adv7511_chip_info

[Biju Das]

Hi Laurent Pinchart,

Thanks for the feedback.

> Subject: Re: [PATCH 2/7] drm: adv7511: Add max_mode_clock variable to
> struct adv7511_chip_info
> 
> Hi Biju,
> 
> Thank you for the patch.
> 
> On Sun, Aug 13, 2023 at 07:05:07PM +0100, Biju Das wrote:
> > The ADV7533 supports a maximum pixel clock of 80MHz whereas it is
> > 148.5MHz for ADV7535.  Add max_mode_clock variable to struct
> > adv7511_chip_info to handle this difference.
> >
> > Signed-off-by: Biju Das <biju.das.jz at bp.renesas.com>
> > ---
> >  drivers/gpu/drm/bridge/adv7511/adv7511.h     | 1 +
> >  drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 6 ++++--
> >  drivers/gpu/drm/bridge/adv7511/adv7533.c     | 2 +-
> >  3 files changed, 6 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h
> > b/drivers/gpu/drm/bridge/adv7511/adv7511.h
> > index 59e8ef10d72e..f8190442ffca 100644
> > --- a/drivers/gpu/drm/bridge/adv7511/adv7511.h
> > +++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h
> > @@ -335,6 +335,7 @@ enum adv7511_type {
> >
> >  struct adv7511_chip_info {
> >  	enum adv7511_type type;
> > +	unsigned long max_mode_clock;
> 
> unsigned int is enough as the clock is expressed in kHz. To make it extra
> clear, you could also name the field max_mode_clock_khz.

Agreed.

Cheers,
Biju

> 
> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
> 
> >  };
> >
> >  struct adv7511 {
> > diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
> > b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
> > index 013d8d640ef4..193b2d5bc7e6 100644
> > --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
> > +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
> > @@ -1371,11 +1371,13 @@ static const struct adv7511_chip_info
> > adv7511_chip_info = {  };
> >
> >  static const struct adv7511_chip_info adv7533_chip_info = {
> > -	.type = ADV7533
> > +	.type = ADV7533,
> > +	.max_mode_clock = 80000
> >  };
> >
> >  static const struct adv7511_chip_info adv7535_chip_info = {
> > -	.type = ADV7535
> > +	.type = ADV7535,
> > +	.max_mode_clock = 148500
> >  };
> >
> >  static const struct i2c_device_id adv7511_i2c_ids[] = { diff --git
> > a/drivers/gpu/drm/bridge/adv7511/adv7533.c
> > b/drivers/gpu/drm/bridge/adv7511/adv7533.c
> > index c452c4dc1c3f..e92b27e0afd1 100644
> > --- a/drivers/gpu/drm/bridge/adv7511/adv7533.c
> > +++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c
> > @@ -108,7 +108,7 @@ enum drm_mode_status adv7533_mode_valid(struct
> adv7511 *adv,
> >  	u8 bpp = mipi_dsi_pixel_format_to_bpp(dsi->format);
> >
> >  	/* Check max clock for either 7533 or 7535 */
> > -	if (mode->clock > (adv->info->type == ADV7533 ? 80000 : 148500))
> > +	if (mode->clock > adv->info->max_mode_clock)
> >  		return MODE_CLOCK_HIGH;
> >
> >  	/* Check max clock for each lane */
> 
> --
> Regards,
> 
> Laurent Pinchart