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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-03-02 19:14:59 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-03-03 16:50:10 +0200 |
| commit | 4841da51a753ca65909441e561236de82b6b48a5 (patch) | |
| tree | 751fff850e13b7525d96dbe9a23adf7fd76920a5 /drivers/gpu/drm/i915/intel_drv.h | |
| parent | 236c48e692458fb55ec96ac1823a176f2bce09f1 (diff) | |
| download | op-kernel-dev-4841da51a753ca65909441e561236de82b6b48a5.zip op-kernel-dev-4841da51a753ca65909441e561236de82b6b48a5.tar.gz | |
drm/i915: Compute proper intermediate wms for vlv/cvh
Since the watermark registers arent double buffered on VLV/CHV, we'll
need to play around with intermediate watermarks same was as we do on
ILK-BDW.
The watermark registers on VLV/CHV contain inverted values, so to find
the intermediate watermark value we just take the minimum of the
active and optimal values. This also means that, unlike ILK-BDW,
there's no chance that we'd fail to find a working intermediate
watermarks. As long as both the active and optimal watermarks are valid
the intermediate watermarks will come out valid as well.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170302171508.1666-10-ville.syrjala@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_drv.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 1e05da9..9bab612 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -538,6 +538,8 @@ struct intel_crtc_wm_state { struct { /* "raw" watermarks (not inverted) */ struct vlv_pipe_wm raw[NUM_VLV_WM_LEVELS]; + /* intermediate watermarks (inverted) */ + struct vlv_wm_state intermediate; /* optimal watermarks (inverted) */ struct vlv_wm_state optimal; /* display FIFO split */ |
