From 891348b2bf08d8946e0621bec49802897b28c1c4 Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Mon, 6 May 2013 19:37:36 -0300 Subject: [PATCH] drm/i915: Enable FBC at Haswell. MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This patch introduce Frame Buffer Compression (FBC) support for HSW. FBC is tied to primary plane A in HSW. v2: Ville pointed out docs say FBC must be disabled before disabling the plane on HSW. v3: Really enabling it by default at HSW. Reviewed-by: Ville Syrjälä Signed-off-by: Rodrigo Vivi Tested-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.c | 1 + drivers/gpu/drm/i915/intel_display.c | 5 +++-- drivers/gpu/drm/i915/intel_pm.c | 21 ++++++++++++--------- 3 files changed, 16 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index cd84f774aace..a1a936fd34e0 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -319,6 +319,7 @@ static const struct intel_device_info intel_haswell_m_info = { .is_mobile = 1, .has_ddi = 1, .has_fpga_dbg = 1, + .has_fbc = 1, }; static const struct pci_device_id pciidlist[] = { /* aka */ diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index a14fec3a6740..50814ce84a9f 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3518,11 +3518,12 @@ static void haswell_crtc_disable(struct drm_crtc *crtc) drm_vblank_off(dev, pipe); intel_crtc_update_cursor(crtc, false); - intel_disable_plane(dev_priv, plane, pipe); - + /* FBC must be disabled before disabling the plane on HSW. */ if (dev_priv->cfb_plane == plane) intel_disable_fbc(dev); + intel_disable_plane(dev_priv, plane, pipe); + if (intel_crtc->config.has_pch_encoder) intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_A, false); intel_disable_pipe(dev_priv, pipe); diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index fdc2839448a0..10f788b62fa8 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -274,12 +274,14 @@ static void gen7_enable_fbc(struct drm_crtc *crtc, unsigned long interval) IVB_DPFC_CTL_FENCE_EN | intel_crtc->plane << IVB_DPFC_CTL_PLANE_SHIFT); - /* WaFbcAsynchFlipDisableFbcQueue */ - I915_WRITE(ILK_DISPLAY_CHICKEN1, ILK_FBCQ_DIS); - /* WaFbcDisableDpfcClockGating */ - I915_WRITE(ILK_DSPCLK_GATE_D, - I915_READ(ILK_DSPCLK_GATE_D) | - ILK_DPFCUNIT_CLOCK_GATE_DISABLE); + if (IS_IVYBRIDGE(dev)) { + /* WaFbcAsynchFlipDisableFbcQueue */ + I915_WRITE(ILK_DISPLAY_CHICKEN1, ILK_FBCQ_DIS); + /* WaFbcDisableDpfcClockGating */ + I915_WRITE(ILK_DSPCLK_GATE_D, + I915_READ(ILK_DSPCLK_GATE_D) | + ILK_DPFCUNIT_CLOCK_GATE_DISABLE); + } I915_WRITE(SNB_DPFC_CTL_SA, SNB_CPU_FENCE_ENABLE | obj->fence_reg); @@ -476,7 +478,7 @@ void intel_update_fbc(struct drm_device *dev) if (enable_fbc < 0) { DRM_DEBUG_KMS("fbc set to per-chip default\n"); enable_fbc = 1; - if (INTEL_INFO(dev)->gen <= 7) + if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev)) enable_fbc = 0; } if (!enable_fbc) { @@ -497,7 +499,8 @@ void intel_update_fbc(struct drm_device *dev) dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE; goto out_disable; } - if ((IS_I915GM(dev) || IS_I945GM(dev)) && intel_crtc->plane != 0) { + if ((IS_I915GM(dev) || IS_I945GM(dev) || IS_HASWELL(dev)) && + intel_crtc->plane != 0) { DRM_DEBUG_KMS("plane not 0, disabling compression\n"); dev_priv->no_fbc_reason = FBC_BAD_PLANE; goto out_disable; @@ -4544,7 +4547,7 @@ void intel_init_pm(struct drm_device *dev) if (I915_HAS_FBC(dev)) { if (HAS_PCH_SPLIT(dev)) { dev_priv->display.fbc_enabled = ironlake_fbc_enabled; - if (IS_IVYBRIDGE(dev)) + if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) dev_priv->display.enable_fbc = gen7_enable_fbc; else -- 2.34.1