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drm/amd/display: Parse scanline registers

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They could differ between ASIC generations

Signed-off-by: Sylvia Tsai <sylvia.tsai@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sylvia Tsai
2017-04-11 15:15:28 -04:00
committed by Alex Deucher
parent 1ce71fcd5d
commit 81c509633a
7 changed files with 89 additions and 66 deletions
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15
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -103,6 +103,8 @@ static u32 dm_vblank_get_counter(struct amdgpu_device *adev, int crtc)
static int dm_crtc_get_scanoutpos(struct amdgpu_device *adev, int crtc,
u32 *vbl, u32 *position)
{
uint32_t v_blank_start, v_blank_end, h_position, v_position;
if ((crtc < 0) || (crtc >= adev->mode_info.num_crtc))
return -EINVAL;
else {
@@ -113,7 +115,18 @@ static int dm_crtc_get_scanoutpos(struct amdgpu_device *adev, int crtc,
return 0;
}
return dc_stream_get_scanoutpos(acrtc->stream, vbl, position);
/*
* TODO rework base driver to use values directly.
* for now parse it back into reg-format
*/
dc_stream_get_scanoutpos(acrtc->stream,
&v_blank_start,
&v_blank_end,
&h_position,
&v_position);
*position = (v_position) || (h_position << 16);
*vbl = (v_blank_start) || (v_blank_end << 16);
}
return 0;