diff options
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 6e38325d04a..9d9835a4fee 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -66,6 +66,8 @@ #define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5) /* use +hsync +vsync for detailed mode */ #define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6) +/* Force reduced-blanking timings for detailed modes */ +#define EDID_QUIRK_FORCE_REDUCED_BLANKING (1 << 7) struct detailed_mode_closure { struct drm_connector *connector; @@ -120,6 +122,9 @@ static struct edid_quirk { /* Samsung SyncMaster 22[5-6]BW */ { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 }, { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 }, + + /* ViewSonic VA2026w */ + { "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING }, }; /*** DDC fetch and block validation ***/ @@ -852,12 +857,19 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev, "Wrong Hsync/Vsync pulse width\n"); return NULL; } + + if (quirks & EDID_QUIRK_FORCE_REDUCED_BLANKING) { + mode = drm_cvt_mode(dev, hactive, vactive, 60, true, false, false); + if (!mode) + return NULL; + + goto set_size; + } + mode = drm_mode_create(dev); if (!mode) return NULL; - mode->type = DRM_MODE_TYPE_DRIVER; - if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH) timing->pixel_clock = cpu_to_le16(1088); @@ -881,8 +893,6 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev, drm_mode_do_interlace_quirk(mode, pt); - drm_mode_set_name(mode); - if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) { pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE; } @@ -892,6 +902,7 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev, 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; @@ -905,6 +916,9 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev, mode->height_mm = edid->height_cm * 10; } + mode->type = DRM_MODE_TYPE_DRIVER; + drm_mode_set_name(mode); + return mode; } |