bad:
if (raw_edid) {
- DRM_ERROR("Raw EDID:\n");
+ printk(KERN_ERR "Raw EDID:\n");
print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
- printk("\n");
+ printk(KERN_ERR "\n");
}
return 0;
}
return ret == 2 ? 0 : -1;
}
+static bool drm_edid_is_zero(u8 *in_edid, int length)
+{
+ int i;
+ u32 *raw_edid = (u32 *)in_edid;
+
+ for (i = 0; i < length / 4; i++)
+ if (*(raw_edid + i) != 0)
+ return false;
+ return true;
+}
+
static u8 *
drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
{
goto out;
if (drm_edid_block_valid(block))
break;
+ if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) {
+ connector->null_edid_counter++;
+ goto carp;
+ }
}
if (i == 4)
goto carp;
static void drm_add_display_info(struct edid *edid,
struct drm_display_info *info)
{
+ u8 *edid_ext;
+
info->width_mm = edid->width_cm * 10;
info->height_mm = edid->height_cm * 10;
info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
info->color_formats = DRM_COLOR_FORMAT_YCRCB422;
+
+ /* Get data from CEA blocks if present */
+ edid_ext = drm_find_cea_extension(edid);
+ if (!edid_ext)
+ return;
+
+ info->cea_rev = edid_ext[1];
}
/**