BMC/Intel-BMC/linux.git/include/drm/drm_crtc.h, branch v3.2

drm: support routines for HDMI/DP ELD

2011-09-21T21:52:41+00:00

ELD (EDID-Like Data) describes to the HDMI/DP audio driver the audio capabilities of the plugged monitor. This adds drm_edid_to_eld() for converting EDID to ELD. The converted ELD will be saved in a new drm_connector.eld[128] data field. This is necessary because the graphics driver will need to fixup some of the data fields (eg. HDMI/DP connection type, AV sync delay) before writing to the hardware ELD buffer. drm_av_sync_delay() will help the graphics drivers dynamically compute the AV sync delay for fixing-up the ELD. ELD selection policy: it's possible for one encoder to be associated with multiple connectors (ie. monitors), in which case the first found ELD will be returned by drm_select_eld(). This policy may not be suitable for all users, but let's start it simple first. The impact of ELD selection policy: assume there are two monitors, one supports stereo playback and the other has 8-channel output; cloned display mode is used, so that the two monitors are associated with the same internal encoder. If only the stereo playback capability is reported, the user won't be able to start 8-channel playback; if the 8-channel ELD is reported, then user space applications may send 8-channel samples down, however the user may actually be listening to the 2-channel monitor and not connecting speakers to the 8-channel monitor. According to James, many TVs will either refuse the display anything or pop-up an OSD warning whenever they receive hdmi audio which they cannot handle. Eventually we will require configurability and/or per-monitor audio control even when the video is cloned. CC: Zhao Yakui CC: Wang Zhenyu CC: Jeremy Bush CC: Christopher White CC: Pierre-Louis Bossart CC: Paul Menzel CC: James Cloos CC: Chris Wilson Signed-off-by: Ben Skeggs Signed-off-by: Wu Fengguang Signed-off-by: Keith Packard

drm: Separate EDID Header Check from EDID Block Check

2011-08-04T13:39:35+00:00

Provides function drm_edid_header_is_valid() for EDID header check and replaces EDID header check part of function drm_edid_block_valid() by a call of drm_edid_header_is_valid(). This is a prerequisite to extend DDC probing, e. g. in function radeon_ddc_probe() for Radeon devices, by a central EDID header check. Tested for kernel 2.6.35, 2.6.38 and 3.0 Cc: Signed-off-by: Thomas Reim Reviewed-by: Alex Deucher Acked-by: Stephen Michaels Signed-off-by: Dave Airlie

drm: track CEA version number if present

2011-08-04T00:43:10+00:00

Drivers need to know the CEA version number in addition to other display info (like whether the display is an HDMI sink) before enabling certain features. So track the CEA version number in the display info structure. Signed-off-by: Jesse Barnes Signed-off-by: Keith Packard

drm/radeon: workaround a hw bug on some radeon chipsets with all-0 EDIDs.

2011-06-16T06:30:54+00:00

Some RS690 chipsets seem to end up with floating connectors, either a DVI connector isn't actually populated, or an add-in HDMI card is available but not installed. In this case we seem to get a NULL byte response for each byte of the i2c transaction, so we detect this case and if we see it we don't do anymore DDC transactions on this connector. I've tested this on my RS690 without the HDMI card installed and it seems to work fine. Signed-off-by: Dave Airlie Reviewed-by: Alex Deucher

drm: parse color format support for digital displays

2011-04-28T04:44:56+00:00

EDID 1.4 digital displays report the color spaces they support in the features block. Add support for grabbing this data and stuffing it into the display_info struct for driver use. Signed-off-by: Jesse Barnes Reviewed-by: Alex Deucher Signed-off-by: Dave Airlie

drm: add bit depth parsing

2011-04-28T04:42:58+00:00

EDID 1.4 digital monitors report the bit depth supported in the input field. Add support for parsing this out and storing the info in the display_info structure for use by drivers. [airlied: tweaked to fix inter-patch dependency] Signed-off-by: Jesse Barnes Reviewed-by: Adam Jackson Signed-off-by: Dave Airlie

Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6

2011-04-07T18:14:49+00:00

* 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6: Fix common misspellings

drm: export drm_find_cea_extension to drivers

2011-04-01T00:16:17+00:00

Nouveau needs access to this structure to build an ELD block for use by the HDA audio codec. Signed-off-by: Ben Skeggs Signed-off-by: Dave Airlie

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi

drm: Mark constant arrays of drm_display_mode const

2011-02-23T01:13:11+00:00

... and fixup some methods to accept the constant argument. Now that constant module arrays are loaded into read-only memory, using const appropriately has some benefits beyond warning the programmer about likely mistakes. Signed-off-by: Chris Wilson Signed-off-by: Dave Airlie