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drm/edid: don't modify EDID while parsing

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We'll want to keep the EDID immutable while parsing. Stop modifying the
EDID because of the quirks.

In theory, this does have userspace implications, but the userspace is
supposed to use the modes exposed via KMS API, not by parsing the EDID
directly.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/45d5cf067eaad49b321ac82836090d9de524374e.1648477901.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula
2022-03-28 17:34:22 +03:00
parent 8b917cbe38
commit faacff8e6a
1 changed files with 9 additions and 9 deletions
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18
drivers/gpu/drm/drm_edid.c
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@@ -2740,9 +2740,9 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
return NULL;
if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH)
timing->pixel_clock = cpu_to_le16(1088);
mode->clock = le16_to_cpu(timing->pixel_clock) * 10;
mode->clock = 1088 * 10;
else
mode->clock = le16_to_cpu(timing->pixel_clock) * 10;
mode->hdisplay = hactive;
mode->hsync_start = mode->hdisplay + hsync_offset;
@@ -2763,14 +2763,14 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
drm_mode_do_interlace_quirk(mode, pt);
if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) {
pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE;
mode->flags |= DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC;
} else {
mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ?
DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ?
DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
}
mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ?
DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ?
DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
set_size:
mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4;
mode->height_mm = pt->height_mm_lo | (pt->width_height_mm_hi & 0xf) << 8;