From 82b599ece3b8c25fa6d4823086bfa5800a816bf4 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Thu, 24 Aug 2023 16:46:04 +0300 Subject: drm/edid: parse source physical address CEC needs the source physical address. Parsing it is trivial with the existing EDID CEA DB infrastructure. Default to CEC_PHYS_ADDR_INVALID (0xffff) instead of 0 to cater for easier CEC usage. Cc: Hans Verkuil Cc: linux-media@vger.kernel.org Signed-off-by: Jani Nikula Reviewed-by: Hans Verkuil Acked-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/8c6b6403932536b6849e0b44e1ee6e7ebdbe4a69.1692884619.git.jani.nikula@intel.com --- drivers/gpu/drm/drm_edid.c | 5 +++++ include/drm/drm_connector.h | 8 ++++++++ 2 files changed, 13 insertions(+) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 307a414733a4..6ef1f4cdd286 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -29,6 +29,7 @@ */ #include +#include #include #include #include @@ -6205,6 +6206,8 @@ drm_parse_hdmi_vsdb_video(struct drm_connector *connector, const u8 *db) info->is_hdmi = true; + info->source_physical_address = (db[4] << 8) | db[5]; + if (len >= 6) info->dvi_dual = db[6] & 1; if (len >= 7) @@ -6483,6 +6486,8 @@ static void drm_reset_display_info(struct drm_connector *connector) info->vics_len = 0; info->quirks = 0; + + info->source_physical_address = CEC_PHYS_ADDR_INVALID; } static void update_displayid_info(struct drm_connector *connector, diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index d300fde6c1a4..40a5e7acf2fa 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -816,6 +816,14 @@ struct drm_display_info { * @quirks: EDID based quirks. Internal to EDID parsing. */ u32 quirks; + + /** + * @source_physical_address: Source Physical Address from HDMI + * Vendor-Specific Data Block, for CEC usage. + * + * Defaults to CEC_PHYS_ADDR_INVALID (0xffff). + */ + u16 source_physical_address; }; int drm_display_info_set_bus_formats(struct drm_display_info *info, -- cgit v1.2.3