drm/i915: Fix drain latency precision multipler for VLV
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 72948a0..91edd47 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -1288,13 +1288,13 @@
entries = (clock / 1000) * pixel_size;
*plane_prec_mult = (entries > 256) ?
- DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16;
+ DRAIN_LATENCY_PRECISION_64 : DRAIN_LATENCY_PRECISION_32;
*plane_dl = (64 * (*plane_prec_mult) * 4) / ((clock / 1000) *
pixel_size);
entries = (clock / 1000) * 4; /* BPP is always 4 for cursor */
*cursor_prec_mult = (entries > 256) ?
- DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16;
+ DRAIN_LATENCY_PRECISION_64 : DRAIN_LATENCY_PRECISION_32;
*cursor_dl = (64 * (*cursor_prec_mult) * 4) / ((clock / 1000) * 4);
return true;
@@ -1320,9 +1320,9 @@
if (vlv_compute_drain_latency(dev, 0, &plane_prec_mult, &planea_dl,
&cursor_prec_mult, &cursora_dl)) {
cursora_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
- DDL_CURSORA_PRECISION_32 : DDL_CURSORA_PRECISION_16;
+ DDL_CURSORA_PRECISION_32 : DDL_CURSORA_PRECISION_64;
planea_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
- DDL_PLANEA_PRECISION_32 : DDL_PLANEA_PRECISION_16;
+ DDL_PLANEA_PRECISION_32 : DDL_PLANEA_PRECISION_64;
I915_WRITE(VLV_DDL1, cursora_prec |
(cursora_dl << DDL_CURSORA_SHIFT) |
@@ -1333,9 +1333,9 @@
if (vlv_compute_drain_latency(dev, 1, &plane_prec_mult, &planeb_dl,
&cursor_prec_mult, &cursorb_dl)) {
cursorb_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
- DDL_CURSORB_PRECISION_32 : DDL_CURSORB_PRECISION_16;
+ DDL_CURSORB_PRECISION_32 : DDL_CURSORB_PRECISION_64;
planeb_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
- DDL_PLANEB_PRECISION_32 : DDL_PLANEB_PRECISION_16;
+ DDL_PLANEB_PRECISION_32 : DDL_PLANEB_PRECISION_64;
I915_WRITE(VLV_DDL2, cursorb_prec |
(cursorb_dl << DDL_CURSORB_SHIFT) |