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path: root/drivers/gpu/drm/drm_edid.c
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2022-05-13drm/edid: add drm_edid helper for drm_detect_monitor_audio()Jani Nikula1-15/+22
We'll need to propagate drm_edid everywhere. v2: Handle NULL EDID pointer (Ville, CI) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/ea33244c473ace1bc72a7e87f97580f00705a683.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: add drm_edid helper for drm_detect_hdmi_monitor()Jani Nikula1-13/+20
We'll need to propagate drm_edid everywhere. v2: Handle NULL EDID pointer (Ville, CI) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/2fbee0d7b544b44ef0866bb154beefac5d260bec.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: add drm_edid helper for drm_edid_to_speaker_allocation()Jani Nikula1-14/+23
We'll need to propagate drm_edid everywhere.' v2: Handle NULL EDID pointer (Ville, CI) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/770d095c93274969c4b86480e07044e16a7b5760.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: add drm_edid helper for drm_edid_to_sad()Jani Nikula1-13/+21
We'll need to propagate drm_edid everywhere. v2: Handle NULL EDID pointer (Ville, CI) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/14aa1e44caa2e9c1b54c2f2a471d2fd7d3f62d5d.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert drm_for_each_detailed_block() to drm_edidJani Nikula1-18/+18
We'll need to propagate drm_edid everywhere. v2: Fix checkpatch warning on superfluous parens Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/bfd06d64235393012b2f3626d5764350de5f5321.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert get_monitor_name() to drm_edidJani Nikula1-8/+16
We'll need to propagate drm_edid everywhere. v2: Drop incorrect NULL name check (Dan Carpenter) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/c940aad14f323ef3a7907a0fb534011deb1589a9.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert mode_in_range() and drm_monitor_supports_rb() to drm_edidJani Nikula1-13/+14
We'll need to propagate drm_edid everywhere. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/aac7dd14ce8c266491e9dfae12cad00fecdcd2e3.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert drm_mode_std() and children to drm_edidJani Nikula1-25/+27
We'll need to propagate drm_edid everywhere. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/9fb970d108a8bb666b87a590c74f480e0fd81cc8.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert drm_cvt_modes_for_range() to drm_edidJani Nikula1-6/+6
We'll need to propagate drm_edid everywhere. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/c2c251a504933debacf78e1382ae665ae490ed40.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert drm_gtf_modes_for_range() to drm_edidJani Nikula1-5/+5
We'll need to propagate drm_edid everywhere. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/b50377ce67fd3cee6628ea5865c80fa0fa7da990.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert drm_dmt_modes_for_range() to drm_edidJani Nikula1-5/+5
We'll need to propagate drm_edid everywhere. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/a8f393263225321e74f1e2884e81b3346d1adf20.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert drm_mode_detailed() to drm_edidJani Nikula1-4/+4
We'll need to propagate drm_edid everywhere. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/6e4625d529ee4bfb2f6ebbfef5fb707d65a0554d.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert struct detailed_mode_closure to drm_edidJani Nikula1-14/+13
We'll need to propagate drm_edid everywhere. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/da4c927cd973766568a79ef044254fff20317e7f.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert drm_edid_connector_update() to drm_edid fullyJani Nikula1-50/+47
We'll need to propagate drm_edid everywhere. v3: s/edid/drm_edid/ in comment too (Ankit) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220511092650.4193330-1-jani.nikula@intel.com
2022-05-13drm/edid: propagate drm_edid to drm_edid_to_eld()Jani Nikula1-10/+10
We'll need to propagate drm_edid everywhere. v3: Rebase Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220511092349.4186498-1-jani.nikula@intel.com
2022-05-13drm/edid: keep propagating drm_edid to display infoJani Nikula1-20/+30
We'll need to propagate drm_edid everywhere. v3: Update comment to refer to update_display_info() (Ankit) v2: Use drm_edid_legacy_init() Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220511092104.4179637-1-jani.nikula@intel.com
2022-05-13drm/edid: start propagating drm_edid to lower levelsJani Nikula1-3/+27
We'll need to propagate drm_edid everywhere. This is a clunky start, but a start nonetheless. We'll eventually convert all of the EDID parsing to struct drm_edid. Initially, we'll just create the struct drm_edid in stack. This will be the compat layer for legacy struct edid code. In the future, we'll have EDID read return drm_edid objects. v2: Add legacy init helper. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/000452fddedbaf7f473ac25d4dde2502e60b8e39.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: add struct drm_edid containerJani Nikula1-0/+9
Introduce new opaque type struct drm_edid to encapsulate the EDID data and the size allocated for it. The contents will be private to drm_edid.c. There are a number of reasons for adding a container around struct edid: * struct edid is a raw blob pointer to data that usually originates outside of the kernel. Its size is contained within the structure. * There's no way to attach meta information (such as allocated memory size) to struct edid. * Validation of the EDID blob and its size become crucial, and it's spread all over the subsystem, with varying levels of accuracy. * HDMI Forum has introduced an HF-EEODB extension that defines an override EDID size within an EDID extension. The size allocated for an EDID depends on whether the allocator understands the HF-EEODB extension. Given a struct edid *, it's impossible to know how much memory was actually allocated for it. There are also some reasons for making the container type struct drm_edid opaque and private to drm_edid.c: * Have only one place for creating and parsing the EDID, to avoid duplicating bugs. * Prepare for reading a pure DisplayID 2.0 from its own DDC address, and adding it within the same struct drm_edid container, transparently, and for all drivers. * With the idea that the drm_edid objects are immutable during their lifetimes, it will be possible to refcount them and reduce EDID copying everywhere (this is left for future work). Initially, just add the type. In follow-up, we'll start converting the guts of drm_edid.c to use it, and finally add interfaces around it. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/f3ecabd8a219aea678ad00f7bcdecf77b27b3c78.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: convert drm_for_each_detailed_block() to edid iterJani Nikula1-3/+5
We have an iterator for this, use it. It does include the base block, but its tag is 0 and will be skipped. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/a68718819a3dbfbdaaaddca7f73afa5ac6b33d07.1652097712.git.jani.nikula@intel.com
2022-05-13drm/edid: use else-if in CTA extension parsingJani Nikula1-6/+6
Only one of the conditions can be true. Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/3a7ba2217134b0ab4c4c72e4333231a4e0616e88.1652097712.git.jani.nikula@intel.com
2022-05-05drm/edid: sunset drm_find_cea_extension()Jani Nikula1-10/+9
Convert drm_find_cea_extension() to a predicate function to check if the EDID has a CTA extension or a DisplayID CTA data block. This is mainly to avoid adding new users that only find the first CTA extension. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/a5bf228942e6bd0fc70d5cf7a14c249a14a7afcd.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: skip CTA extension scan in drm_edid_to_eld() just for CTA revJani Nikula1-10/+5
The DisplayID CTA data block version does not necessarily match the CTA revision. Simplify by postponing drm_edid_to_eld() slightly, and reusing the CTA revision extracted by drm_parse_cea_ext(). By not bailing out early in drm_edid_to_eld() we may end up filling meaningless data to the ELD. However, the main decision for audio is not the ELD, but rather drm_detect_monitor_audio() called by drivers. (Arguably a future cleanup could do that in drm_add_edid_modes() and cache the result in the connector.) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/163ebbfd765066acbfc267256fb3b67fc711a78d.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: detect color formats and CTA revision in all CTA extensionsJani Nikula1-8/+13
Convert drm_find_cea_extension() to EDID block iterator in color format and CTA revision detection. Detect them in all CTA extensions. Also parse CTA Data Blocks in DisplayID even if there's no CTA EDID extension. v2: - Don't assume DRM_COLOR_FORMAT_RGB444 support if there's only DisplayID CTA Data Blocks (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220505105242.1198521-1-jani.nikula@intel.com
2022-05-05drm/edid: detect basic audio in all CEA extensionsJani Nikula1-6/+10
Convert drm_find_cea_extension() to EDID block iterator in basic audio detection. Detect basic audio in all CEA extensions. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/59481d0397de4b91b3e6ea665882334e92538f40.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: restore some type safety to cea_db_*() functionsJani Nikula1-12/+9
During the transition, we accepted a void pointer for a poor C programmer's version of polymorphism. Switch the functions to use struct cea_db * to regain some more type safety. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/c6ad496cdadea1bb598711a65ef536f4a43b74a7.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: sunset the old unused cea data block iteratorsJani Nikula1-45/+0
All CTA data block iteration has now been converted to the new cea db iterators. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/a5b35ed0e711bd874f76ae87ee0b70150d0a77c4.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: convert drm_edid_to_eld() to use cea db iterJani Nikula1-35/+29
Iterate through all CTA data blocks across all CTA extensions and DisplayID data blocks. This may gather more data than before, and if there's duplicated data, some is overwritten by whichever comes last. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/8bdc67aa731857111eddd08a9c192d41d40b5f5a.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: convert drm_parse_cea_ext() to use cea db iterJani Nikula1-12/+13
Iterate through all CTA data blocks across all CTA Extensions and DisplayID data blocks. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/7400792525c13f58652f288b891d6057637ed4c8.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: convert drm_detect_monitor_audio() to use cea db iterJani Nikula1-10/+13
Iterate through all CEA data blocks. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/a7f0c380da9526f8dd6f758d7a748bca7b4da6ce.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: convert drm_detect_hdmi_monitor() to use cea db iterJani Nikula1-14/+11
Iterate through all CTA data blocks, not just the first CTA extension. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/b867e7b628189d2f8fa7eac5b9aa701892724711.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: convert drm_edid_to_sad() to use cea db iterJani Nikula1-25/+9
Use the cea db iterator for short audio descriptors. We'll still stop at the first audio data block, but not at the first CTA Extension if that doesn't have the info. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/237e4b1de1567903d37ce1d1bb830020b8fd6690.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: convert drm_edid_to_speaker_allocation() to use cea db iterJani Nikula1-32/+15
Use the cea db iterator for speaker allocation. We'll still stop at the first speaker data block, but not at the first CTA extension if that doesn't have the info. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/0b9e7f136854055a14b826097160fe0b43b9f3d1.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: convert add_cea_modes() to use cea db iterJani Nikula1-36/+31
Iterate through all CTA EDID extension blocks and DisplayID CTA data blocks to add CEA modes. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/dfa2d79db61d5eea543bef7aca7d80da3e71f99d.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: clean up cea_db_is_*() functionsJani Nikula1-87/+40
Abstract helpers for matching vendor data blocks and extended tags, and use them to simplify all the cea_db_is_*() functions. Take void pointer as parameter to allow transitional use for both u8 * and struct cea_db *. v2: Remove superfluous parens (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/b6bb813afc35c763e744c6cdb4a787da3adf910b.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: add iterator for CTA data blocksJani Nikula1-12/+190
Add an iterator for CTA Data Blocks across EDID CTA Extensions and DisplayID CTA Data Blocks. v2: Update references, note why we can trust displayid ranges (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/37fdd2d9eabc73aaa9f95c56246dc47aea0e8e4e.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: add iterator for EDID base and extension blocksJani Nikula1-0/+48
Add an iterator abstraction for going through all the EDID blocks. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/ce02778b353b906c928268de9d7569d493a9be5d.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: clean up CTA data block tag definitionsJani Nikula1-30/+35
Add prefixed names, group, sort, add references. v2: - Updated references to CTA-861-H - s/CEA/CTA/ in data block macros Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/c66cc3adeb375f5e60d1a8f91b41580d8ab67442.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: rename HDMI Forum VSDB to SCDSJani Nikula1-20/+21
The HDMI spec talks about SCDS, Sink Capability Data Structure, exposed via HF-VSDB or HF-SCDB. Rename VSDB to SCDS. Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/f8230e1893400e9a9c5829041a8ab36349182a54.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: check for HF-SCDB blockLee Shawn C1-1/+17
Find HF-SCDB information in CEA extensions block. And retrieve Max_TMDS_Character_Rate that support by sink device. v2: HF-SCDB and HF-VSDBS carry the same SCDS data. Reuse drm_parse_hdmi_forum_vsdb() to parse this packet. Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Cc: intel-gfx <intel-gfx@lists.freedesktop.org> Signed-off-by: Lee Shawn C <shawn.c.lee@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/2bf7110cdb56d5dda311480787faf472c9802de4.1651569697.git.jani.nikula@intel.com
2022-05-05drm/edid: reset display info in drm_add_edid_modes() for NULL edidJani Nikula1-0/+1
If a NULL edid gets passed to drm_add_edid_modes(), we should probably also reset the display info. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/2ac1c55f94a08d5e72c0b518d956a11002ec85c1.1651569697.git.jani.nikula@intel.com
2022-04-29drm/edid: drop kernel-doc for static functionsJani Nikula1-40/+17
Drop the kernel-doc for static functions, it's excessive, but retain the info in plain comments. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Simon Ser <contact@emersion.fr> Link: https://patchwork.freedesktop.org/patch/msgid/20220426091913.1339941-2-jani.nikula@intel.com
2022-04-29drm/edid: fix kernel-doc parameter name mismatchesJani Nikula1-4/+4
Fix the below drm/edid kernel-doc warnings: drivers/gpu/drm/drm_edid.c:1589: warning: Function parameter or member '_edid' not described in 'drm_edid_header_is_valid' drivers/gpu/drm/drm_edid.c:1589: warning: Excess function parameter 'raw_edid' description in 'drm_edid_header_is_valid' drivers/gpu/drm/drm_edid.c:1737: warning: Function parameter or member '_block' not described in 'drm_edid_block_valid' drivers/gpu/drm/drm_edid.c:1737: warning: Excess function parameter 'raw_edid' description in 'drm_edid_block_valid' drivers/gpu/drm/drm_edid.c:2136: warning: Function parameter or member 'read_block' not described in 'drm_do_get_edid' drivers/gpu/drm/drm_edid.c:2136: warning: Function parameter or member 'context' not described in 'drm_do_get_edid' drivers/gpu/drm/drm_edid.c:2136: warning: Excess function parameter 'get_edid_block' description in 'drm_do_get_edid' drivers/gpu/drm/drm_edid.c:2136: warning: Excess function parameter 'data' description in 'drm_do_get_edid' Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> References: https://lore.kernel.org/r/20220406154431.567414c3@canb.auug.org.au References: https://lore.kernel.org/r/20220420162431.2b28ddea@canb.auug.org.au Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Simon Ser <contact@emersion.fr> Link: https://patchwork.freedesktop.org/patch/msgid/20220426091913.1339941-1-jani.nikula@intel.com
2022-04-25drm/display: Move SCDC helpers into display-helper libraryThomas Zimmermann1-1/+0
SCDC is the Status and Control Data Channel for HDMI. Move the SCDC helpers into display/ and split the header into files for core and helpers. Update all affected drivers. No functional changes. To avoid the proliferation of Kconfig options, SCDC is part of DRM's support for HDMI. If necessary, a new option could make SCDC an independent feature. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220421073108.19226-9-tzimmermann@suse.de
2022-04-25drm/display: Move HDMI helpers into display-helper moduleThomas Zimmermann1-159/+0
Move DRM's HMDI helpers into the display/ subdirectoy and add it to DRM's display helpers. Update all affected drivers. No functional changes. The HDMI helpers were implemented in the EDID and connector code, but are actually unrelated. With the move to the display-helper library, we can remove the dependency on drm_edid.{c,h} in some driver's HDMI source files. Several of the HDMI helpers remain in EDID code because both share parts of their implementation internally. With better refractoring of the EDID code, those HDMI helpers could be moved into the display-helper library as well. v3: * fix Kconfig dependencies (Javier) v2: * reduce HDMI helpers to avoid exporting functions (Jani) * fix include statements (Jani, Javier) * update Kconfig symbols Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220421073108.19226-8-tzimmermann@suse.de
2022-04-14drm/edid: add EDID block count and size helpersJani Nikula1-23/+57
Add some helpers to figure out the EDID extension block count, block count, size, pointers to blocks. Unfortunately, we'll need to cast away the const in a few places where we actually need to access the data. v3: fix (!edid_extension_block_count(edid) == 0) (kernel test robot) v2: fix s/j/i/ introduced in a rebase Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/dc7b0850293d837439fb3914c8a9d81e39018b4b.1649685475.git.jani.nikula@intel.com
2022-04-14drm/edid: add single point of return to drm_do_get_edid()Jani Nikula1-7/+8
This will be useful in the future. Use fail label for fail exit. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/8e564e9415baa4dc9dc3127e4200b2618a8a3ba0.1649685475.git.jani.nikula@intel.com
2022-04-14drm/edid: drop extra local varJani Nikula1-4/+4
We don't need override as a variable for anything. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/4d249173b34758e1d6c4a74eb98518d180f0a8ae.1649685475.git.jani.nikula@intel.com
2022-04-14drm/edid: convert extension block read to EDID block read helperJani Nikula1-8/+7
Use the EDID block read helper also for extension block reads, making edid_block_read() the only place with the read retry logic. Note: We observe that drm_do_get_edid() does not use invalid extension blocks to flag the EDID as corrupt. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/a6328b898db40235b85ad4635374bc0768b5a970.1649685475.git.jani.nikula@intel.com
2022-04-14drm/edid: use EDID block read helper in drm_do_get_edid()Jani Nikula1-39/+23
Convert drm_do_get_edit() from the base block read helper to the generic block read helper. There's quite a bit going on here, as the corrupt and null EDID information is moved back to the caller. As we see, they were not all that clear to begin with, and this change underlines that. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/3bcf98453770757ee93386da0cfbc6552d42a312.1649685475.git.jani.nikula@intel.com
2022-04-14drm/edid: abstract an EDID block read helperJani Nikula1-7/+51
We have an abstraction for the EDID base block read, yet duplicating the retries and error handling for extension block reads. Introduce a more generic EDID block read helper. Switch to the helper piecemeal, starting with drm_edid_get_panel_id(), which doesn't need or have access to the connector anyway. The subtle change is switching from drm_edid_block_valid() to edid_block_check(). We also status print once, not for every attempt. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/47560f7530e4a7b32b56cb9038178244fe30a4af.1649685475.git.jani.nikula@intel.com
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-29 00:59:55 +0300