From: Dave Airlie <airlied@xxxxxxxxxx>
This just makes the code easier to follow.
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
---
drivers/gpu/drm/drm_edid.c | 110 ++++++++++++++++++++++++---------------------
1 file changed, 59 insertions(+), 51 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 1a364b3..e4c681f 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -4152,6 +4152,60 @@ 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)
+{
+ 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;
+ struct drm_tile_group *tg;
+
+ w = tile->tile_size[0] | tile->tile_size[1] << 8;
+ h = tile->tile_size[2] | tile->tile_size[3] << 8;
+
+ num_v_tile = (tile->topo[0] & 0xf) | (tile->topo[2] & 0x30);
+ num_h_tile = (tile->topo[0] >> 4) | ((tile->topo[2] >> 2) & 0x30);
+ tile_v_loc = (tile->topo[1] & 0xf) | ((tile->topo[2] & 0x3) << 4);
+ tile_h_loc = (tile->topo[1] >> 4) | (((tile->topo[2] >> 2) & 0x3) << 4);
+
+ connector->has_tile = true;
+ if (tile->tile_cap & 0x80)
+ connector->tile_is_single_monitor = true;
+
+ connector->num_h_tile = num_h_tile + 1;
+ connector->num_v_tile = num_v_tile + 1;
+ connector->tile_h_loc = tile_h_loc;
+ connector->tile_v_loc = tile_v_loc;
+ connector->tile_h_size = w + 1;
+ connector->tile_v_size = h + 1;
+
+ DRM_DEBUG_KMS("tile cap 0x%x\n", tile->tile_cap);
+ DRM_DEBUG_KMS("tile_size %d x %d\n", w + 1, h + 1);
+ DRM_DEBUG_KMS("topo num tiles %dx%d, location %dx%d\n",
+ num_h_tile + 1, num_v_tile + 1, tile_h_loc, tile_v_loc);
+ DRM_DEBUG_KMS("vend %c%c%c\n", tile->topology_id[0], tile->topology_id[1], tile->topology_id[2]);
+
+ tg = drm_mode_get_tile_group(connector->dev, tile->topology_id);
+ if (!tg) {
+ tg = drm_mode_create_tile_group(connector->dev, tile->topology_id);
+ }
+ if (!tg)
+ return -ENOMEM;
+
+ if (connector->tile_group != tg) {
+ /* if we haven't got a pointer,
+ take the reference, drop ref to old tile group */
+ if (connector->tile_group) {
+ drm_mode_put_tile_group(connector->dev, connector->tile_group);
+ }
+ connector->tile_group = tg;
+ } else
+ /* if same tile group, then release the ref we just took. */
+ drm_mode_put_tile_group(connector->dev, tg);
+ return 0;
+}
+
static int drm_parse_display_id(struct drm_connector *connector,
u8 *displayid, int length,
bool is_edid_extension)
@@ -4162,6 +4216,7 @@ static int drm_parse_display_id(struct drm_connector *connector,
struct displayid_block *block;
u8 csum = 0;
int i;
+ int ret;
if (is_edid_extension)
idx = 1;
@@ -4192,57 +4247,10 @@ static int drm_parse_display_id(struct drm_connector *connector,
block->tag, block->rev, block->num_bytes);
switch (block->tag) {
- case DATA_BLOCK_TILED_DISPLAY: {
- 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;
- struct drm_tile_group *tg;
-
- w = tile->tile_size[0] | tile->tile_size[1] << 8;
- h = tile->tile_size[2] | tile->tile_size[3] << 8;
-
- num_v_tile = (tile->topo[0] & 0xf) | (tile->topo[2] & 0x30);
- num_h_tile = (tile->topo[0] >> 4) | ((tile->topo[2] >> 2) & 0x30);
- tile_v_loc = (tile->topo[1] & 0xf) | ((tile->topo[2] & 0x3) << 4);
- tile_h_loc = (tile->topo[1] >> 4) | (((tile->topo[2] >> 2) & 0x3) << 4);
-
- connector->has_tile = true;
- if (tile->tile_cap & 0x80)
- connector->tile_is_single_monitor = true;
-
- connector->num_h_tile = num_h_tile + 1;
- connector->num_v_tile = num_v_tile + 1;
- connector->tile_h_loc = tile_h_loc;
- connector->tile_v_loc = tile_v_loc;
- connector->tile_h_size = w + 1;
- connector->tile_v_size = h + 1;
-
- DRM_DEBUG_KMS("tile cap 0x%x\n", tile->tile_cap);
- DRM_DEBUG_KMS("tile_size %d x %d\n", w + 1, h + 1);
- DRM_DEBUG_KMS("topo num tiles %dx%d, location %dx%d\n",
- num_h_tile + 1, num_v_tile + 1, tile_h_loc, tile_v_loc);
- DRM_DEBUG_KMS("vend %c%c%c\n", tile->topology_id[0], tile->topology_id[1], tile->topology_id[2]);
-
- tg = drm_mode_get_tile_group(connector->dev, tile->topology_id);
- if (!tg) {
- tg = drm_mode_create_tile_group(connector->dev, tile->topology_id);
- }
- if (!tg)
- return -ENOMEM;
-
- if (connector->tile_group != tg) {
- /* if we haven't got a pointer,
- take the reference, drop ref to old tile group */
- if (connector->tile_group) {
- drm_mode_put_tile_group(connector->dev, connector->tile_group);
- }
- connector->tile_group = tg;
- } else
- /* if same tile group, then release the ref we just took. */
- drm_mode_put_tile_group(connector->dev, tg);
- }
+ case DATA_BLOCK_TILED_DISPLAY:
+ ret = drm_parse_tiled_block(connector, block);
+ if (ret)
+ return ret;
break;
default:
DRM_DEBUG_KMS("found DisplayID tag 0x%x, unhandled\n", block->tag);
--
2.5.5
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