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| author | Rafał Miłecki <zajec5@gmail.com> | 2013-04-19 19:01:25 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-04-23 18:03:58 -0400 |
| commit | fe214163cc6e6b33253b7ac14bc3dd616e76b513 (patch) | |
| tree | 32c17795c76da99c458c61f71127d4897f82deb3 /include/drm | |
| parent | 205996c0776a229052c33688ee58a605a021740d (diff) | |
| download | lwn-fe214163cc6e6b33253b7ac14bc3dd616e76b513.tar.gz lwn-fe214163cc6e6b33253b7ac14bc3dd616e76b513.zip | |
drm: add drm_edid_to_eld helper extracting SADs from EDID (v2)
Some devices (ATI/AMD cards) don't support passing ELD struct to the
hardware but just require filling specific registers and then the
hardware/firmware does the rest. In such cases we need to read the info
from SAD blocks and put them in the correct registers.
agd5f: note that the returned pointer needs to be kfreed as per
Christian's suggestion.
v2: fix warning
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_edid.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 5da1b4ae7d84..fc481fc17085 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -244,12 +244,21 @@ struct edid { #define EDID_PRODUCT_ID(e) ((e)->prod_code[0] | ((e)->prod_code[1] << 8)) +/* Short Audio Descriptor */ +struct cea_sad { + u8 format; + u8 channels; /* max number of channels - 1 */ + u8 freq; + u8 byte2; /* meaning depends on format */ +}; + struct drm_encoder; struct drm_connector; struct drm_display_mode; struct hdmi_avi_infoframe; void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid); +int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads); int drm_av_sync_delay(struct drm_connector *connector, struct drm_display_mode *mode); struct drm_connector *drm_select_eld(struct drm_encoder *encoder, |