summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/drm_edid.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-10 23:04:36 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-10 23:04:36 +0400
commit1a464cbb3d483f2f195b614cffa4aa1b910a0440 (patch)
treeaf57dee6436532dbb546b8670e9e1f6910d489b5 /drivers/gpu/drm/drm_edid.c
parentdbe950f201a8edd353b0bd9079e8d536ee4ce37c (diff)
parent095f979a539245a46b9e5d600ec9c720b4d928e5 (diff)
downloadlinux-1a464cbb3d483f2f195b614cffa4aa1b910a0440.tar.xz
Merge branch 'drm-core-next' of git://people.freedesktop.org/~airlied/linux
* 'drm-core-next' of git://people.freedesktop.org/~airlied/linux: (307 commits) drm/nouveau/pm: fix build with HWMON off gma500: silence gcc warnings in mid_get_vbt_data() drm/ttm: fix condition (and vs or) drm/radeon: double lock typo in radeon_vm_bo_rmv() drm/radeon: use after free in radeon_vm_bo_add() drm/sis|via: don't return stack garbage from free_mem ioctl drm/radeon/kms: remove pointless CS flags priority struct drm/radeon/kms: check if vm is supported in VA ioctl drm: introduce drm_can_sleep and use in intel/radeon drivers. (v2) radeon: Fix disabling PCI bus mastering on big endian hosts. ttm: fix agp since ttm tt rework agp: Fix multi-line warning message whitespace drm/ttm/dma: Fix accounting error when calling ttm_mem_global_free_page and don't try to free freed pages. drm/ttm/dma: Only call set_pages_array_wb when the page is not in WB pool. drm/radeon/kms: sync across multiple rings when doing bo moves v3 drm/radeon/kms: Add support for multi-ring sync in CS ioctl (v2) drm/radeon: GPU virtual memory support v22 drm: make DRM_UNLOCKED ioctls with their own mutex drm: no need to hold global mutex for static data drm/radeon/benchmark: common modes sweep ignores 640x480@32 ... Fix up trivial conflicts in radeon/evergreen.c and vmwgfx/vmwgfx_kms.c
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
-rw-r--r--drivers/gpu/drm/drm_edid.c103
1 files changed, 67 insertions, 36 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 3e927ce7557d..ece03fc2d386 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -508,25 +508,10 @@ static void
cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
{
int i, n = 0;
- u8 rev = ext[0x01], d = ext[0x02];
+ u8 d = ext[0x02];
u8 *det_base = ext + d;
- switch (rev) {
- case 0:
- /* can't happen */
- return;
- case 1:
- /* have to infer how many blocks we have, check pixel clock */
- for (i = 0; i < 6; i++)
- if (det_base[18*i] || det_base[18*i+1])
- n++;
- break;
- default:
- /* explicit count */
- n = min(ext[0x03] & 0x0f, 6);
- break;
- }
-
+ n = (127 - d) / 18;
for (i = 0; i < n; i++)
cb((struct detailed_timing *)(det_base + 18 * i), closure);
}
@@ -1319,6 +1304,7 @@ add_detailed_modes(struct drm_connector *connector, struct edid *edid,
#define HDMI_IDENTIFIER 0x000C03
#define AUDIO_BLOCK 0x01
+#define VIDEO_BLOCK 0x02
#define VENDOR_BLOCK 0x03
#define SPEAKER_BLOCK 0x04
#define EDID_BASIC_AUDIO (1 << 6)
@@ -1349,6 +1335,47 @@ u8 *drm_find_cea_extension(struct edid *edid)
}
EXPORT_SYMBOL(drm_find_cea_extension);
+static int
+do_cea_modes (struct drm_connector *connector, u8 *db, u8 len)
+{
+ struct drm_device *dev = connector->dev;
+ u8 * mode, cea_mode;
+ int modes = 0;
+
+ for (mode = db; mode < db + len; mode++) {
+ cea_mode = (*mode & 127) - 1; /* CEA modes are numbered 1..127 */
+ if (cea_mode < drm_num_cea_modes) {
+ struct drm_display_mode *newmode;
+ newmode = drm_mode_duplicate(dev,
+ &edid_cea_modes[cea_mode]);
+ if (newmode) {
+ drm_mode_probed_add(connector, newmode);
+ modes++;
+ }
+ }
+ }
+
+ return modes;
+}
+
+static int
+add_cea_modes(struct drm_connector *connector, struct edid *edid)
+{
+ u8 * cea = drm_find_cea_extension(edid);
+ u8 * db, dbl;
+ int modes = 0;
+
+ if (cea && cea[1] >= 3) {
+ for (db = cea + 4; db < cea + cea[2]; db += dbl + 1) {
+ dbl = db[0] & 0x1f;
+ if (((db[0] & 0xe0) >> 5) == VIDEO_BLOCK)
+ modes += do_cea_modes (connector, db+1, dbl);
+ }
+ }
+
+ return modes;
+}
+
static void
parse_hdmi_vsdb(struct drm_connector *connector, uint8_t *db)
{
@@ -1432,26 +1459,29 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
eld[18] = edid->prod_code[0];
eld[19] = edid->prod_code[1];
- for (db = cea + 4; db < cea + cea[2]; db += dbl + 1) {
- dbl = db[0] & 0x1f;
-
- switch ((db[0] & 0xe0) >> 5) {
- case AUDIO_BLOCK: /* Audio Data Block, contains SADs */
- sad_count = dbl / 3;
- memcpy(eld + 20 + mnl, &db[1], dbl);
- break;
- case SPEAKER_BLOCK: /* Speaker Allocation Data Block */
- eld[7] = db[1];
- break;
- case VENDOR_BLOCK:
- /* HDMI Vendor-Specific Data Block */
- if (db[1] == 0x03 && db[2] == 0x0c && db[3] == 0)
- parse_hdmi_vsdb(connector, db);
- break;
- default:
- break;
+ if (cea[1] >= 3)
+ for (db = cea + 4; db < cea + cea[2]; db += dbl + 1) {
+ dbl = db[0] & 0x1f;
+
+ switch ((db[0] & 0xe0) >> 5) {
+ case AUDIO_BLOCK:
+ /* Audio Data Block, contains SADs */
+ sad_count = dbl / 3;
+ memcpy(eld + 20 + mnl, &db[1], dbl);
+ break;
+ case SPEAKER_BLOCK:
+ /* Speaker Allocation Data Block */
+ eld[7] = db[1];
+ break;
+ case VENDOR_BLOCK:
+ /* HDMI Vendor-Specific Data Block */
+ if (db[1] == 0x03 && db[2] == 0x0c && db[3] == 0)
+ parse_hdmi_vsdb(connector, db);
+ break;
+ default:
+ break;
+ }
}
- }
eld[5] |= sad_count << 4;
eld[2] = (20 + mnl + sad_count * 3 + 3) / 4;
@@ -1722,6 +1752,7 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
num_modes += add_standard_modes(connector, edid);
num_modes += add_established_modes(connector, edid);
num_modes += add_inferred_modes(connector, edid);
+ num_modes += add_cea_modes(connector, edid);
if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
edid_fixup_preferred(connector, quirks);