drm/i915: Fix hpd live status bits for g4x

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / i915 / intel_pm.c

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f091ad12d694a43ebb0dce69b31089ffd4abe366..1e851e037c292881d6d726bcbec5429f53c7e962 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -1789,16 +1789,20 @@ static uint32_t ilk_compute_cur_wm(const struct intel_crtc_state *cstate,
                                   const struct intel_plane_state *pstate,
                                   uint32_t mem_value)
 {
-       int bpp = pstate->base.fb ? pstate->base.fb->bits_per_pixel / 8 : 0;
+       /*
+        * We treat the cursor plane as always-on for the purposes of watermark
+        * calculation.  Until we have two-stage watermark programming merged,
+        * this is necessary to avoid flickering.
+        */
+       int cpp = 4;
+       int width = pstate->visible ? pstate->base.crtc_w : 64;
 
-       if (!cstate->base.active || !pstate->visible)
+       if (!cstate->base.active)
                return 0;
 
        return ilk_wm_method2(ilk_pipe_pixel_rate(cstate),
                              cstate->base.adjusted_mode.crtc_htotal,
-                             drm_rect_width(&pstate->dst),
-                             bpp,
-                             mem_value);
+                             width, cpp, mem_value);
 }
 
 /* Only for WM_LP. */
@@ -3880,6 +3884,8 @@ static void ilk_pipe_wm_get_hw_state(struct drm_crtc *crtc)
        if (IS_HASWELL(dev) || IS_BROADWELL(dev))
                hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe));
 
+       memset(active, 0, sizeof(*active));
+
        active->pipe_enabled = intel_crtc->active;
 
        if (active->pipe_enabled) {
@@ -4520,7 +4526,8 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv)
                else
                        gen6_set_rps(dev_priv->dev, dev_priv->rps.idle_freq);
                dev_priv->rps.last_adj = 0;
-               I915_WRITE(GEN6_PMINTRMSK, 0xffffffff);
+               I915_WRITE(GEN6_PMINTRMSK,
+                          gen6_sanitize_rps_pm_mask(dev_priv, ~0));
        }
        mutex_unlock(&dev_priv->rps.hw_lock);
 
@@ -6620,6 +6627,12 @@ static void broadwell_init_clock_gating(struct drm_device *dev)
        misccpctl = I915_READ(GEN7_MISCCPCTL);
        I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE);
        I915_WRITE(GEN8_L3SQCREG1, BDW_WA_L3SQCREG1_DEFAULT);
+       /*
+        * Wait at least 100 clocks before re-enabling clock gating. See
+        * the definition of L3SQCREG1 in BSpec.
+        */
+       POSTING_READ(GEN8_L3SQCREG1);
+       udelay(1);
        I915_WRITE(GEN7_MISCCPCTL, misccpctl);
 
        /*