lwn.git/drivers/gpu/drm/drm_edid.c, branch doc/4.4

drm/edid: Use ARRAY_SIZE in drm_add_modes_noedid

2015-08-11T10:04:16+00:00

Spotted while reading code for random reasons. Reviewed-by: Thierry Reding Signed-off-by: Daniel Vetter

drm: Roll out drm_for_each_connector more

2015-07-22T14:25:47+00:00

Now that we also grab the connection_mutex and so fixed the race with atomic modeset we can use the iterator there too. The other special case is drm_connector_unplug_all which would have a locking inversion with the sysfs store/show functions if we'd grab the mode_config.mutex around the unplug. We could just grab connection_mutex instead, but that's a bit too much a dirty trick for my taste. Also it's only used by udl, which doesn't do any other kind of connector hotplugging, so should be race-free. Hence just stick with a comment for now. Reviewed-by: Maarten Lankhorst Signed-off-by: Daniel Vetter

Merge tag 'topic/drm-misc-2015-05-19' of git://anongit.freedesktop.org/drm-intel into drm-next

2015-05-19T23:19:58+00:00

Scattering of random drm core patches. Bunch of atomic prep work too, but the final bits for blob properties, atomic modesets and lifting the experimental tag on the atomic ioctl are still blocked on Daniel Stone finalizing and testing the weston support for it. I hope that we can get it all ready for 4.2 though. * tag 'topic/drm-misc-2015-05-19' of git://anongit.freedesktop.org/drm-intel: (22 commits) drm/atomic: Allow drivers to subclass drm_atomic_state, v3 drm/atomic: remove duplicated assignment of old_plane_state drm/dp: Fix comment in DP helper drm/atomic: add drm_atomic_get_existing_*_state helpers drm/core: get rid of -Iinclude/drm drm/i915: get rid of -Iinclude/drm drm/atomic-helpers: Export drm_atomic_helper_update_legacy_modeset_state drm/atomic-helpers: Update vblank timestamping constants drm/sysfs: remove unnecessary connector type checks drm/sysfs: split DVI-I and TV-out attributes drm/sysfs: make optional attribute groups per connector type drm/sysfs: add a helper for extracting connector type from kobject drm/edid: Add CEA modes before inferred modes drm/prime: Allow internal imports without import_sg_table drm: Add reference counting to blob properties drm: Introduce blob_lock drm: Introduce helper for replacing blob properties drm: Don't leak path blob property when updating drm/atomic: Don't open-code CRTC state destroy drm/edid: Add DMT modes with ID > 0x50 ...

drm/edid: Add CEA modes before inferred modes

2015-05-12T17:15:39+00:00

Currently we're adding CEA modes after the inferred modes, which means we might get multiple modes that are very close to each other, but slightly different, which seems a bit silly. That's because duplicate mode check that occurs when adding inferred modes would not consider CEA modes as potential duplicates. Reverse the order so that CEA modes get added before inferred modes, and are thus considered potential duplicates. Or as ajax put it on irc: "< ajax> the point of the "pick a timing formula" heuristic was to generate something the sink could _likely_ sink. if it tells us timings it can sink explicitly then second-guessing seems dumb." Cc: Adam Jackson Signed-off-by: Ville Syrjälä Reviewed-by: Adam Jackson Signed-off-by: Daniel Vetter

drm/edid: Kerneldoc for newly added edid_corrupt

2015-05-08T15:26:01+00:00

Also treat it as a proper boolean. Cc: Todd Previte Cc: Paulo Zanoni Cc: dri-devel@lists.freedesktop.org Signed-off-by: Daniel Vetter

drm: Add edid_corrupt flag for Displayport Link CTS 4.2.2.6

2015-05-08T11:03:46+00:00

Displayport compliance test 4.2.2.6 requires that a source device be capable of detecting a corrupt EDID. The test specification states that the sink device sets up the EDID with an invalid checksum. To do this, the sink sets up an invalid EDID header, expecting the source device to generate the checksum and compare it to the value stored in the last byte of the block data. Unfortunately, the DRM EDID reading and parsing functions are actually too good in this case; the header is fixed before the checksum is computed and thus the test never sees the invalid checksum. This results in a failure to pass the compliance test. To correct this issue, when the EDID code detects that the header is invalid, a flag is set to indicate that the EDID is corrupted. In this case, it sets edid_corrupt flag and continues with its fix-up code. This flag is also set in the case of a more seriously damaged header (fixup score less than the threshold). For consistency, the edid_corrupt flag is also set when the checksum is invalid as well. V2: - Removed the static bool global - Added a bool to the drm_connector struct to reaplce the static one for holding the status of raw edid header corruption detection - Modified the function signature of the is_valid function to take an additional parameter to store the corruption detected value - Fixed the other callers of the above is_valid function V3: - Updated the commit message to be more clear about what and why this patch does what it does. - Added comment in code to clarify the operations there - Removed compliance variable and check_link_status update; those have been moved to a later patch - Removed variable assignment from the bottom of the test handler V4: - Removed i915 tag from subject line as the patch is not i915-specific V5: - Moved code causing a compilation error to this patch where the variable is actually declared - Maintained blank lines / spacing so as to not contaminate the patch V6: - Removed extra debug messages - Added documentation to for the added parameter on drm_edid_block_valid - Fixed more whitespace issues in check_link_status - Added a clear of the header_corrupt flag to the end of the test handler in intel_dp.c - Changed the usage of the new function prototype in several places to use NULL where it is not needed by compliance testing V7: - Updated to account for long_pulse flag propagation V8: - Removed clearing of header_corrupt flag from the test handler in intel_dp.c - Added clearing of header_corrupt flag in the drm_edid_block_valid function V9: - Renamed header_corrupt flag to edid_corrupt to more accurately reflect its value and purpose - Updated commit message V10: - Updated for versioning and patch swizzle - Revised the title to more accurately reflect the nature and contents of the patch - Fixed formatting/whitespace problems - Added set flag when computed checksum is invalid Signed-off-by: Todd Previte Cc: dri-devel@lists.freedesktop.org Acked-by: Dave Airlie Reviewed-by: Alex Deucher Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter

drm/edid: Add DMT modes with ID > 0x50

2015-05-07T09:02:21+00:00

DMT Version 1.0, Rev. 13 lists a bunch of new modes we don't currently have in our dmt mode table. So add them. The order may look a bit weird since it's not sorted based on the DMT ID, but this is the order they appear in the standard. I suppose they are ordered by the resolution, pixel clock, or some such factor. I decided that it's perhaps best to keep the same order as the spec. Cc: "liu,lei" Signed-off-by: Ville Syrjälä Reviewed-by: Alex Deucher Signed-off-by: Daniel Vetter

drm/edid: Add the DMT ID in the comments

2015-05-07T09:02:20+00:00

To help with matching things to spec, include the DMT ID in the comments in out DMT mode table. Cc: "liu,lei" Signed-off-by: Ville Syrjälä Reviewed-by: Alex Deucher Signed-off-by: Daniel Vetter

drm/edid: Fix up DMT modes

2015-05-07T09:02:19+00:00

Liu Lei noticed that our 1856x1392@75Hz DMT mode doesn't match the spec. Fix that up, and also fix up a few other inconsistencies I discovered by parsing the spec (DMT version 1.0, revision 13) and comparing the results to our current DMT mode table. Also clean up the indentation mess for the 1024x768i mode. Cc: "liu,lei" Signed-off-by: Ville Syrjälä Reviewed-by: Alex Deucher Signed-off-by: Daniel Vetter

Merge tag 'topic/core-stuff-2014-12-10' of git://anongit.freedesktop.org/drm-intel into drm-next

2014-12-11T00:12:57+00:00

Merge drm core fixes from Daniel. * tag 'topic/core-stuff-2014-12-10' of git://anongit.freedesktop.org/drm-intel: drm: Zero out DRM object memory upon cleanup drm: fix a typo in a comment drm: fix a word repetition in a comment drm: Fix memory leak at error path of drm_read() drm/Documentation: Fix rowspan value in drm-kms-properties drm/edid: Restore kerneldoc consistency drm/edid: new drm_edid_block_checksum helper function V3 drm/edid: shorten log output in case of all zeroes edid block drm/edid: move drm_edid_is_zero to top, make edid argument const