diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-02-28 23:35:52 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-03-05 16:53:33 +0300 |
| commit | c834d03cca61bf88aa8c2f9524360cce484686ac (patch) | |
| tree | b8ad57072feabbb42b4f29aa306bc2a815049c40 /drivers/gpu/drm/i915/intel_pm.c | |
| parent | a7f1e8e45f21a0c8e966a8678fe0391f4196b178 (diff) | |
| download | linux-c834d03cca61bf88aa8c2f9524360cce484686ac.tar.xz | |
drm/i915: Implement display w/a 1140 for glk/cnl
Display w/a #1140 tells us we have to program the transition
watermark to the minimum value on glk/cnl. Let's do that.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200228203552.30273-4-ville.syrjala@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 3501c33e75a8..8375054ba27d 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5120,8 +5120,7 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *crtc_state, { struct drm_device *dev = crtc_state->uapi.crtc->dev; const struct drm_i915_private *dev_priv = to_i915(dev); - u16 trans_min, trans_y_tile_min; - const u16 trans_amount = 10; /* This is configurable amount */ + u16 trans_min, trans_amount, trans_y_tile_min; u16 wm0_sel_res_b, trans_offset_b, res_blocks; /* Transition WM don't make any sense if ipc is disabled */ @@ -5135,9 +5134,16 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *crtc_state, if (IS_GEN9_BC(dev_priv) || IS_BROXTON(dev_priv)) return; - trans_min = 14; if (INTEL_GEN(dev_priv) >= 11) trans_min = 4; + else + trans_min = 14; + + /* Display WA #1140: glk,cnl */ + if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv)) + trans_amount = 0; + else + trans_amount = 10; /* This is configurable amount */ trans_offset_b = trans_min + trans_amount; @@ -5164,7 +5170,6 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *crtc_state, /* WA BUG:1938466 add one block for non y-tile planes */ if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_A0)) res_blocks += 1; - } /* |