drm/edid: Fix DispID tile parsing for override EDID

Currently the DispID tile block gets parsed in drm_get_edid(), which
is an odd place for it considering we parse nothing else there. Also
this doesn't work for override EDIDs since
drm_connector_update_edid_property() refuses to do its job twice
in such cases. Thus we never update the tile property with results
of the DispID tile block parsing during drm_get_edid().

To fix this let's just move the tile block parsing to happen during
drm_connector_update_edid_property(), which is where we parse a bunch
of other stuff as well (and where we update both the EDID and tile
properties).

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200313162054.16009-10-ville.syrjala@linux.intel.com
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 462d8ca..b1099e1 100644 (file)
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -1970,6 +1970,8 @@ int drm_connector_update_edid_property(struct drm_connector *connector,
        else
                drm_reset_display_info(connector);
 
+       drm_update_tile_info(connector, edid);
+
        drm_object_property_set_value(&connector->base,
                                      dev->mode_config.non_desktop_property,
                                      connector->display_info.non_desktop);

diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 16f2413..feba683 100644 (file)
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -278,3 +278,4 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 void drm_mode_fixup_1366x768(struct drm_display_mode *mode);
 void drm_reset_display_info(struct drm_connector *connector);
 u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edid);
+void drm_update_tile_info(struct drm_connector *connector, const struct edid *edid);

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 4cc03bf..43b6ca3 100644 (file)
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1583,8 +1583,6 @@ module_param_named(edid_fixup, edid_fixup, int, 0400);
 MODULE_PARM_DESC(edid_fixup,
                 "Minimum number of valid EDID header bytes (0-8, default 6)");
 
-static void drm_get_displayid(struct drm_connector *connector,
-                             struct edid *edid);
 static int validate_displayid(u8 *displayid, int length, int idx);
 
 static int drm_edid_block_checksum(const u8 *raw_edid)
@@ -2018,18 +2016,13 @@ EXPORT_SYMBOL(drm_probe_ddc);
 struct edid *drm_get_edid(struct drm_connector *connector,
                          struct i2c_adapter *adapter)
 {
-       struct edid *edid;
-
        if (connector->force == DRM_FORCE_OFF)
                return NULL;
 
        if (connector->force == DRM_FORCE_UNSPECIFIED && !drm_probe_ddc(adapter))
                return NULL;
 
-       edid = drm_do_get_edid(connector, drm_do_probe_ddc_edid, adapter);
-       if (edid)
-               drm_get_displayid(connector, edid);
-       return edid;
+       return drm_do_get_edid(connector, drm_do_probe_ddc_edid, adapter);
 }
 EXPORT_SYMBOL(drm_get_edid);
 
@@ -5792,9 +5785,9 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
 EXPORT_SYMBOL(drm_hdmi_vendor_infoframe_from_display_mode);
 
 static int drm_parse_tiled_block(struct drm_connector *connector,
-                                struct displayid_block *block)
+                                const struct displayid_block *block)
 {
-       struct displayid_tiled_block *tile = (struct displayid_tiled_block *)block;
+       const struct displayid_tiled_block *tile = (struct displayid_tiled_block *)block;
        u16 w, h;
        u8 tile_v_loc, tile_h_loc;
        u8 num_v_tile, num_h_tile;
@@ -5845,10 +5838,10 @@ static int drm_parse_tiled_block(struct drm_connector *connector,
        return 0;
 }
 
-static int drm_parse_display_id(struct drm_connector *connector,
-                               u8 *displayid, int length, int idx)
+static int drm_displayid_parse_tiled(struct drm_connector *connector,
+                                    const u8 *displayid, int length, int idx)
 {
-       struct displayid_block *block;
+       const struct displayid_block *block;
        int ret;
 
        idx += sizeof(struct displayid_hdr);
@@ -5862,12 +5855,6 @@ static int drm_parse_display_id(struct drm_connector *connector,
                        if (ret)
                                return ret;
                        break;
-               case DATA_BLOCK_TYPE_1_DETAILED_TIMING:
-                       /* handled in mode gathering code. */
-                       break;
-               case DATA_BLOCK_CTA:
-                       /* handled in the cea parser code. */
-                       break;
                default:
                        DRM_DEBUG_KMS("found DisplayID tag 0x%x, unhandled\n", block->tag);
                        break;
@@ -5876,10 +5863,10 @@ static int drm_parse_display_id(struct drm_connector *connector,
        return 0;
 }
 
-static void drm_get_displayid(struct drm_connector *connector,
-                             struct edid *edid)
+void drm_update_tile_info(struct drm_connector *connector,
+                         const struct edid *edid)
 {
-       void *displayid = NULL;
+       const void *displayid = NULL;
        int length, idx;
        int ret;
 
@@ -5890,7 +5877,7 @@ static void drm_get_displayid(struct drm_connector *connector,
                goto out_drop_ref;
        }
 
-       ret = drm_parse_display_id(connector, displayid, length, idx);
+       ret = drm_displayid_parse_tiled(connector, displayid, length, idx);
        if (ret < 0)
                goto out_drop_ref;
        if (!connector->has_tile)