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drm/edid: Introduce is_detailed_timing_descritor()

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Let's introduce is_detailed_timing_descritor() as the opposite
counterpart of is_display_descriptor().

Cc: Allen Chen <allen.chen@ite.com.tw>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200124200231.10517-3-ville.syrjala@linux.intel.com
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
This commit is contained in:
Ville Syrjälä 2020-01-24 22:02:26 +02:00
parent a7a131ac18
commit f447dd1fa3
1 changed files with 24 additions and 18 deletions
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42
drivers/gpu/drm/drm_edid.c
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@ -2218,6 +2218,11 @@ 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
@ -3117,27 +3122,28 @@ 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;
if (closure->preferred)
newmode->type |= DRM_MODE_TYPE_PREFERRED;
newmode = drm_mode_detailed(closure->connector->dev,
closure->edid, timing,
closure->quirks);
if (!newmode)
return;
/*
* 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);
if (closure->preferred)
newmode->type |= DRM_MODE_TYPE_PREFERRED;
drm_mode_probed_add(closure->connector, newmode);
closure->modes++;
closure->preferred = false;
}
/*
* 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;
}
/*