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drm/displayid: add separate drm_displayid.c

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We'll be adding more DisplayID specific functions going forward, so
start off by splitting out a few functions to a separate file.

We don't bother with exporting the functions; at least for now they
should be needed solely within drm.ko.

No functional changes.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/07942d5011891b8e8f77245c78b34f4af97a9315.1617024940.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2021-03-29 16:37:16 +03:00
parent 43d16d847e
commit 4cc4f09eaa
5 changed files with 73 additions and 57 deletions
Download patch file Download diff file Expand all files Collapse all files

8
include/drm/drm_displayid.h
View file

@ -22,6 +22,10 @@
#ifndef DRM_DISPLAYID_H
#define DRM_DISPLAYID_H
#include <linux/types.h>
struct edid;
#define DATA_BLOCK_PRODUCT_ID 0x00
#define DATA_BLOCK_DISPLAY_PARAMETERS 0x01
#define DATA_BLOCK_COLOR_CHARACTERISTICS 0x02
@ -100,4 +104,8 @@ struct displayid_detailed_timing_block {
(idx) += sizeof(struct displayid_block) + (block)->num_bytes, \
(block) = (const struct displayid_block *)&(displayid)[idx])
const u8 *drm_find_displayid_extension(const struct edid *edid,
int *length, int *idx,
int *ext_index);
#endif

3
include/drm/drm_edid.h
View file

@ -543,5 +543,8 @@ struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
struct drm_display_mode *
drm_display_mode_from_cea_vic(struct drm_device *dev,
u8 video_code);
const u8 *drm_find_edid_extension(const struct edid *edid,
int ext_id, int *ext_index);
#endif /* __DRM_EDID_H__ */