diff options
| author | JinZe.Xu <JinZe.Xu@amd.com> | 2022-03-10 17:20:34 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-03-15 14:41:03 -0400 |
| commit | a0248d543bbf2a977e7e6d9966ce8d96f6e5c358 (patch) | |
| tree | 6e3ae985515b05f3eee0ba0dc257ca5e71d96fb0 /drivers/gpu/drm/amd/display/dc/dc_link.h | |
| parent | 436afdfa35dc8aaf43959593f6c433d0ad29abc3 (diff) | |
drm/amd/display: Add I2C escape to support query device exist.
[How]
1. Search OEM I2C info from BIOS and compare with input parameter.
2. If BIOS doesn't record it, just try to read one byte.
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Signed-off-by: JinZe.Xu <JinZe.Xu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_link.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_link.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index 78e66e4bab5a..aa818bf840eb 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -466,6 +466,11 @@ const struct dc_link_settings *dc_link_get_link_cap( void dc_link_overwrite_extended_receiver_cap( struct dc_link *link); +bool dc_is_oem_i2c_device_present( + struct dc *dc, + size_t slave_address +); + bool dc_submit_i2c( struct dc *dc, uint32_t link_index, |