diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 52 |
1 files changed, 43 insertions, 9 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 038a81d03b17..eb5fa05cf476 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -66,6 +66,14 @@ static void bxt_init_clock_gating(struct drm_device *dev) */ I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ); + + /* + * Wa: Backlight PWM may stop in the asserted state, causing backlight + * to stay fully on. + */ + if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER)) + I915_WRITE(GEN9_CLKGATE_DIS_0, I915_READ(GEN9_CLKGATE_DIS_0) | + PWM1_GATING_DIS | PWM2_GATING_DIS); } static void i915_pineview_get_mem_freq(struct drm_device *dev) @@ -283,7 +291,7 @@ void intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable) struct drm_device *dev = dev_priv->dev; u32 val; - if (IS_VALLEYVIEW(dev)) { + if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { I915_WRITE(FW_BLC_SELF_VLV, enable ? FW_CSPWRDWNEN : 0); POSTING_READ(FW_BLC_SELF_VLV); dev_priv->wm.vlv.cxsr = enable; @@ -2422,7 +2430,7 @@ static void ilk_wm_merge(struct drm_device *dev, * enabled sometime later. */ if (IS_GEN5(dev) && !merged->fbc_wm_enabled && - intel_fbc_enabled(dev_priv)) { + intel_fbc_is_active(dev_priv)) { for (level = 2; level <= max_level; level++) { struct intel_wm_level *wm = &merged->wm[level]; @@ -3306,7 +3314,7 @@ static void skl_write_wm_values(struct drm_i915_private *dev_priv, struct drm_device *dev = dev_priv->dev; struct intel_crtc *crtc; - list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) { + for_each_intel_crtc(dev, crtc) { int i, level, max_level = ilk_wm_max_level(dev); enum pipe pipe = crtc->pipe; @@ -3515,8 +3523,7 @@ static void skl_update_other_pipe_wm(struct drm_device *dev, * Otherwise, because of this_crtc being freshly enabled/disabled, the * other active pipes need new DDB allocation and WM values. */ - list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list, - base.head) { + for_each_intel_crtc(dev, intel_crtc) { struct skl_pipe_wm pipe_wm = {}; bool wm_changed; @@ -4397,7 +4404,7 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv) mutex_lock(&dev_priv->rps.hw_lock); if (dev_priv->rps.enabled) { - if (IS_VALLEYVIEW(dev)) + if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) vlv_set_rps_idle(dev_priv); else gen6_set_rps(dev_priv->dev, dev_priv->rps.idle_freq); @@ -4450,7 +4457,7 @@ void gen6_rps_boost(struct drm_i915_private *dev_priv, void intel_set_rps(struct drm_device *dev, u8 val) { - if (IS_VALLEYVIEW(dev)) + if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) valleyview_set_rps(dev, val); else gen6_set_rps(dev, val); @@ -4494,7 +4501,7 @@ static void valleyview_disable_rps(struct drm_device *dev) static void intel_print_rc6_info(struct drm_device *dev, u32 mode) { - if (IS_VALLEYVIEW(dev)) { + if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { if (mode & (GEN7_RC_CTL_TO_MODE | GEN6_RC_CTL_EI_MODE(1))) mode = GEN6_RC_CTL_RC6_ENABLE; else @@ -5091,7 +5098,17 @@ static int valleyview_rps_rpe_freq(struct drm_i915_private *dev_priv) static int valleyview_rps_min_freq(struct drm_i915_private *dev_priv) { - return vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM) & 0xff; + u32 val; + + val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM) & 0xff; + /* + * According to the BYT Punit GPU turbo HAS 1.1.6.3 the minimum value + * for the minimum frequency in GPLL mode is 0xc1. Contrary to this on + * a BYT-M B0 the above register contains 0xbf. Moreover when setting + * a frequency Punit will not allow values below 0xc0. Clamp it 0xc0 + * to make sure it matches what Punit accepts. + */ + return max_t(u32, val, 0xc0); } /* Check that the pctx buffer wasn't move under us. */ @@ -5996,7 +6013,17 @@ static void intel_init_emon(struct drm_device *dev) void intel_init_gt_powersave(struct drm_device *dev) { + struct drm_i915_private *dev_priv = dev->dev_private; + i915.enable_rc6 = sanitize_rc6_option(dev, i915.enable_rc6); + /* + * RPM depends on RC6 to save restore the GT HW context, so make RC6 a + * requirement. + */ + if (!i915.enable_rc6) { + DRM_INFO("RC6 disabled, disabling runtime PM support\n"); + intel_runtime_pm_get(dev_priv); + } if (IS_CHERRYVIEW(dev)) cherryview_init_gt_powersave(dev); @@ -6006,10 +6033,15 @@ void intel_init_gt_powersave(struct drm_device *dev) void intel_cleanup_gt_powersave(struct drm_device *dev) { + struct drm_i915_private *dev_priv = dev->dev_private; + if (IS_CHERRYVIEW(dev)) return; else if (IS_VALLEYVIEW(dev)) valleyview_cleanup_gt_powersave(dev); + + if (!i915.enable_rc6) + intel_runtime_pm_put(dev_priv); } static void gen6_suspend_rps(struct drm_device *dev) @@ -7213,4 +7245,6 @@ void intel_pm_setup(struct drm_device *dev) INIT_LIST_HEAD(&dev_priv->rps.mmioflips.link); dev_priv->pm.suspended = false; + atomic_set(&dev_priv->pm.wakeref_count, 0); + atomic_set(&dev_priv->pm.atomic_seq, 0); } |