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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2018-12-21 19:14:28 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-01-30 15:59:43 +0200 |
| commit | b52c273be6876107a9f77987d9d42cee36d0081e (patch) | |
| tree | 89d4fadc3ac61af561c899fb3031c82a19401d0f /drivers | |
| parent | 5b0bd14dcc6bf0d28ad908aa1b8835667f860c84 (diff) | |
| download | linux-b52c273be6876107a9f77987d9d42cee36d0081e.tar.gz | |
drm/i915: Don't ignore level 0 lines watermark for glk+
On glk+ the level 0 lines watermark actually matters. Do not ignore it. And while at it let's change things so that we always program a consistnet 0 to the register when the lines watermarks is ignored by the hardware. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181221171436.8218-2-ville.syrjala@linux.intel.com Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index fdc28a3d2936..e517bdd2c2f9 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4674,6 +4674,15 @@ skl_compute_plane_wm_params(const struct intel_crtc_state *cstate, return 0; } +static bool skl_wm_has_lines(struct drm_i915_private *dev_priv, int level) +{ + if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) + return true; + + /* The number of lines are ignored for the level 0 watermark. */ + return level > 0; +} + static void skl_compute_plane_wm(const struct intel_crtc_state *cstate, const struct intel_plane_state *intel_pstate, int level, @@ -4756,8 +4765,10 @@ static void skl_compute_plane_wm(const struct intel_crtc_state *cstate, } } - /* The number of lines are ignored for the level 0 watermark. */ - if (level > 0 && res_lines > 31) + if (!skl_wm_has_lines(dev_priv, level)) + res_lines = 0; + + if (res_lines > 31) return; /* |