> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Alex
> Deucher
> Sent: Tuesday, January 28, 2020 4:06 AM
> To: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx>
> Cc: Allen Chen <allen.chen@xxxxxxxxxx>; Intel Graphics Development <intel-
> gfx@xxxxxxxxxxxxxxxxxxxxx>; Maling list - DRI developers <dri-
> devel@xxxxxxxxxxxxxxxxxxxxx>
> Subject: Re: [PATCH 3/8] drm/edid: Introduce
> is_detailed_timing_descritor()
>
> On Fri, Jan 24, 2020 at 3:02 PM Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> wrote:
> >
> > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> >
> > Let's introduce is_detailed_timing_descritor() as the opposite
> > counterpart of is_display_descriptor().
> >
> > Cc: Allen Chen <allen.chen@xxxxxxxxxx>
> > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Looks good.
Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
> > ---
> > drivers/gpu/drm/drm_edid.c | 42
> > ++++++++++++++++++++++----------------
> > 1 file changed, 24 insertions(+), 18 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> > index 96ae1fde4ce2..d6bce58b27ac 100644
> > --- a/drivers/gpu/drm/drm_edid.c
> > +++ b/drivers/gpu/drm/drm_edid.c
> > @@ -2202,6 +2202,11 @@ static bool is_display_descriptor(const u8 d[18], u8
> tag)
> > d[2] == 0x00 && d[3] == tag; }
> >
> > +static bool is_detailed_timing_descriptor(const u8 d[18]) {
> > + return d[0] != 0x00 || d[1] != 0x00; }
> > +
> > typedef void detailed_cb(struct detailed_timing *timing, void
> > *closure);
> >
> > static void
> > @@ -3101,27 +3106,28 @@ do_detailed_mode(struct detailed_timing *timing,
> void *c)
> > struct detailed_mode_closure *closure = c;
> > struct drm_display_mode *newmode;
> >
> > - if (timing->pixel_clock) {
> > - newmode = drm_mode_detailed(closure->connector->dev,
> > - closure->edid, timing,
> > - closure->quirks);
> > - if (!newmode)
> > - return;
> > + if (!is_detailed_timing_descriptor((const u8 *)timing))
> > + return;
> > +
> > + newmode = drm_mode_detailed(closure->connector->dev,
> > + closure->edid, timing,
> > + closure->quirks);
> > + if (!newmode)
> > + return;
> >
> > - if (closure->preferred)
> > - newmode->type |= DRM_MODE_TYPE_PREFERRED;
> > + if (closure->preferred)
> > + newmode->type |= DRM_MODE_TYPE_PREFERRED;
> >
> > - /*
> > - * Detailed modes are limited to 10kHz pixel clock resolution,
> > - * so fix up anything that looks like CEA/HDMI mode, but the clock
> > - * is just slightly off.
> > - */
> > - fixup_detailed_cea_mode_clock(newmode);
> > + /*
> > + * Detailed modes are limited to 10kHz pixel clock resolution,
> > + * so fix up anything that looks like CEA/HDMI mode, but the clock
> > + * is just slightly off.
> > + */
> > + fixup_detailed_cea_mode_clock(newmode);
> >
> > - drm_mode_probed_add(closure->connector, newmode);
> > - closure->modes++;
> > - closure->preferred = false;
> > - }
> > + drm_mode_probed_add(closure->connector, newmode);
> > + closure->modes++;
> > + closure->preferred = false;
> > }
> >
> > /*
> > --
> > 2.24.1
> >
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