diff options
| author | Takashi Iwai <tiwai@suse.de> | 2012-04-23 17:40:33 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-04-23 17:41:16 +0100 |
| commit | c09dedb7a50e23f0166e0bbae61c75c7ec23cf7f (patch) | |
| tree | b4bbbfb52e681aacfae2cd009d1ef96ef0ce1c6f /drivers/gpu/drm/drm_edid.c | |
| parent | 02809179bb10f73be38cb2d221f3cc9b871daaa5 (diff) | |
drm/edid: Add a workaround for 1366x768 HD panel
HD panel (1366x768) found most commonly on laptops can't be represented
exactly in CVT/DMT expression, which leads to 1368x768 instead, because
1366 can't be divided by 8.
Add a hack to convert to 1366x768 manually as an exception.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index bad2f11aa22..c6366e90041 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1039,6 +1039,19 @@ drm_dmt_modes_for_range(struct drm_connector *connector, struct edid *edid, return modes; } +/* fix up 1366x768 mode from 1368x768; + * GFT/CVT can't express 1366 width which isn't dividable by 8 + */ +static void fixup_mode_1366x768(struct drm_display_mode *mode) +{ + if (mode->hdisplay == 1368 && mode->vdisplay == 768) { + mode->hdisplay = 1366; + mode->hsync_start--; + mode->hsync_end--; + drm_mode_set_name(mode); + } +} + static int drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid, struct detailed_timing *timing) @@ -1053,6 +1066,7 @@ drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid, if (!newmode) return modes; + fixup_mode_1366x768(newmode); if (!mode_in_range(newmode, edid, timing)) { drm_mode_destroy(dev, newmode); continue; @@ -1080,6 +1094,7 @@ drm_cvt_modes_for_range(struct drm_connector *connector, struct edid *edid, if (!newmode) return modes; + fixup_mode_1366x768(newmode); if (!mode_in_range(newmode, edid, timing)) { drm_mode_destroy(dev, newmode); continue; |