Reduce the image size. Yes, this is unrelated to the previous patch, but for the coding it is important to have same style for range limit EIDD block. I mean the following: for calculation if mode is in range one style ,but for ranges retrieval another style. I am proposing to follow the style which looks to me closer to the spec. I have attached the screenshot demonstrates those magic numbers. Vitaly -----Original Message----- From: Daniel Vetter [mailto:daniel.vetter@xxxxxxxx] On Behalf Of Daniel Vetter Sent: Tuesday, May 03, 2016 4:26 PM To: Prosyak, Vitaly Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx Subject: Re: [PATCH] drm/edid : calculate vsync and hsync from range limits block according to the EDID 1.4 On Tue, May 03, 2016 at 11:05:25AM -0400, Vitaly Prosyak wrote: > Do calculation of vsync and hsync from range limits EDID block > according to the spec. EDID 1.4. > > Signed-off-by: Vitaly Prosyak <vitaly.prosyak@xxxxxxx> Seems unrelated to the previous patch, please submit in a separate series. > --- > drivers/gpu/drm/drm_edid.c | 16 ++++++++-------- > 1 file changed, 8 insertions(+), 8 deletions(-) > > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c > index 7e49962..601152b 100644 > --- a/drivers/gpu/drm/drm_edid.c > +++ b/drivers/gpu/drm/drm_edid.c > @@ -1977,11 +1977,11 @@ mode_in_hsync_range(const struct drm_display_mode *mode, > int hsync, hmin, hmax; > > hmin = t[7]; > - if (edid->revision >= 4) > - hmin += ((t[4] & 0x04) ? 255 : 0); > + if (edid->revision >= 4 && ((t[4] & 0x0c) == 0x0c)) > + hmin += 255 ; > hmax = t[8]; > - if (edid->revision >= 4) > - hmax += ((t[4] & 0x08) ? 255 : 0); > + if (edid->revision >= 4 && (t[4] & 0x08)) > + hmax += 255; Please don't reshuffle code without functional changes. Same above, for such small bugfixes it's best to only change what you need changed. It might also be useful to introduce symbolic #defines for all these magic constants. -Daniel > hsync = drm_mode_hsync(mode); > > return (hsync <= hmax && hsync >= hmin); @@ -1994,11 +1994,11 @@ > mode_in_vsync_range(const struct drm_display_mode *mode, > int vsync, vmin, vmax; > > vmin = t[5]; > - if (edid->revision >= 4) > - vmin += ((t[4] & 0x01) ? 255 : 0); > + if (edid->revision >= 4 && ((t[4] & 0x03) == 0x03)) > + vmin += 255; > vmax = t[6]; > - if (edid->revision >= 4) > - vmax += ((t[4] & 0x02) ? 255 : 0); > + if (edid->revision >= 4 && (t[4] & 0x02)) > + vmax += 255; > vsync = drm_mode_vrefresh(mode); > > return (vsync <= vmax && vsync >= vmin); > -- > 1.9.1 > > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
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