Commit 82b599ec authored by Jani Nikula's avatar Jani Nikula
Browse files

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 <hverkuil-cisco@xs4all.nl>
Cc: linux-media@vger.kernel.org
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Reviewed-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: default avatarMaxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/8c6b6403932536b6849e0b44e1ee6e7ebdbe4a69.1692884619.git.jani.nikula@intel.com
parent e1039cde

drivers/gpu/drm/drm_edid.c

+5 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
 */



#include <linux/bitfield.h>

#include <linux/cec.h>

#include <linux/hdmi.h>

#include <linux/i2c.h>

#include <linux/kernel.h>
@@ -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,

include/drm/drm_connector.h

+8 −0
Original line number Diff line number Diff line
@@ -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,