kernel/linux.git/include/drm/drm_edid.h, branch v6.12.91

drm/edid: add DRM_EDID_IDENT_INIT() to initialize struct drm_edid_ident

2026-01-08T09:14:53+00:00

commit 8b61583f993589a64c061aa91b44f5bd350d90a5 upstream. Add a convenience helper for initializing struct drm_edid_ident. Cc: Tiago Martins Araújo Acked-by: Alex Deucher Tested-by: Tiago Martins Araújo Cc: stable@vger.kernel.org Link: https://patch.msgid.link/710b2ac6a211606ec1f90afa57b79e8c7375a27e.1761681968.git.jani.nikula@intel.com Signed-off-by: Jani Nikula Signed-off-by: Greg Kroah-Hartman

drm/edid: make drm_edid_block_valid() static

2024-08-14T09:16:34+00:00

drm_edid_block_valid() is no longer used outside of drm_edid.c. Make it static. Acked-by: Zhi Wang Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20240812142849.1588006-2-jani.nikula@intel.com Signed-off-by: Jani Nikula

drm/edid: remove drm_do_get_edid()

2024-05-14T07:30:15+00:00

All users of drm_do_get_edid() have been converted to drm_edid_read_custom(). Remove the unused function to prevent new users from creeping in. Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20240513202723.261440-1-jani.nikula@intel.com Signed-off-by: Jani Nikula

drm/edid: make drm_edid_are_equal() static

2024-04-17T13:11:36+00:00

drm_edid_are_equal() is only used within drm_edid.c. Make it static. Do not encourage more uses of struct edid. Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/aa79be9a5d0b08c71b82b86b5a8ff0f332e13c6a.1713259151.git.jani.nikula@intel.com Signed-off-by: Jani Nikula

drm/edid: group struct drm_edid based declarations together

2024-04-17T13:11:22+00:00

Keep the declarations for struct drm_edid based functions together. Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/2634de73734dfbf0a772511a80eab966c8206cf2.1713259151.git.jani.nikula@intel.com Signed-off-by: Jani Nikula

drm/edid: move all internal declarations to drm_crtc_internal.h

2024-04-17T13:11:17+00:00

The declarations for internal EDID functions are a bit scattered. Put them all in drm_crtc_internal.h. Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/9ae137ea51f9cc2ccb3899b0acda553e6a8ce2db.1713259151.git.jani.nikula@intel.com Signed-off-by: Jani Nikula

drm/edid: add drm_edid_print_product_id()

2024-04-15T12:42:49+00:00

Add a function to print a decoded EDID vendor and product id to a drm printer, optionally with the raw data. v2: - refactor date printing - use seq_buf to avoid kasprintf() (Ville) - handle week == 0 (Ville) - use be16_to_cpu() on manufacturer_name Cc: Ville Syrjälä Acked-by: Melissa Wen # v1 Reviewed-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/32bbc83ee6557809ef6d7a5edb1bc8ef4d56d10f.1712655867.git.jani.nikula@intel.com Signed-off-by: Jani Nikula

drm/edid: add drm_edid_get_product_id()

2024-04-15T12:42:40+00:00

Add a struct drm_edid based function to get the vendor and product ID from an EDID. Add a separate struct for defining this part of the EDID, with defined byte order for manufacturer name, product code and serial number. v2: Define manufacturer_name as __be16 instead of u8[2] (Ville) Cc: Ville Syrjälä Acked-by: Melissa Wen Reviewed-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/df0e7dedbf7f2c190039d6e6eae3e126eba113c9.1712655867.git.jani.nikula@intel.com Signed-off-by: Jani Nikula

drm/edid: Add a function to match EDID with identity

2024-03-14T15:22:57+00:00

Create a type drm_edid_ident as the identity of an EDID. Currently it contains panel id and monitor name. Create a function that can match a given EDID and an identity: 1. Reject if the panel id doesn't match. 2. If name is not null in identity, try to match it in the detailed timing blocks. Note that some panel vendors put the monitor name after EDID_DETAIL_MONITOR_STRING. Signed-off-by: Hsin-Yi Wang Reviewed-by: Douglas Anderson Reviewed-by: Jani Nikula Signed-off-by: Douglas Anderson Link: https://patchwork.freedesktop.org/patch/msgid/20240307230653.1807557-3-hsinyi@chromium.org

drm_edid: Add a function to get EDID base block

2024-03-14T15:20:26+00:00

It's found that some panels have variants that they share the same panel id although their EDID and names are different. Besides panel id, now we need more information from the EDID base block to distinguish these panel variants. Add drm_edid_read_base_block() to return the EDID base block, which is wrapped in struct drm_edid. Caller can further use it to get panel id or check if the block contains certain strings, such as panel name. Merge drm_edid_get_panel_id() and edid_extract_panel_id() into one function. Signed-off-by: Hsin-Yi Wang Reviewed-by: Douglas Anderson Reviewed-by: Jani Nikula Signed-off-by: Douglas Anderson Link: https://patchwork.freedesktop.org/patch/msgid/20240307230653.1807557-2-hsinyi@chromium.org