From 3c2777fd2faa5d1c1d5867baa086f2fd8b05479e Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Thu, 26 Jun 2014 17:03:06 +0300 Subject: [PATCH] drm/i915: Add cherryview_update_wm() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit CHV has a third pipe so we need to compute the watermarks for its planes. Add cherryview_update_wm() to do just that. v2: Rebase on top of Imre's cxsr changes v3: Pass crtc to vlv_update_drain_latency() Reviewed-by: Paulo Zanoni Signed-off-by: Ville Syrjälä Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_pm.c | 81 ++++++++++++++++++++++++++++++++- 1 file changed, 80 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 0feeae845f12..da43e30ad60b 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -1399,6 +1399,85 @@ static void valleyview_update_wm(struct drm_crtc *crtc) intel_set_memory_cxsr(dev_priv, true); } +static void cherryview_update_wm(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + static const int sr_latency_ns = 12000; + struct drm_i915_private *dev_priv = dev->dev_private; + int planea_wm, planeb_wm, planec_wm; + int cursora_wm, cursorb_wm, cursorc_wm; + int plane_sr, cursor_sr; + int ignore_plane_sr, ignore_cursor_sr; + unsigned int enabled = 0; + bool cxsr_enabled; + + vlv_update_drain_latency(crtc); + + if (g4x_compute_wm0(dev, PIPE_A, + &valleyview_wm_info, latency_ns, + &valleyview_cursor_wm_info, latency_ns, + &planea_wm, &cursora_wm)) + enabled |= 1 << PIPE_A; + + if (g4x_compute_wm0(dev, PIPE_B, + &valleyview_wm_info, latency_ns, + &valleyview_cursor_wm_info, latency_ns, + &planeb_wm, &cursorb_wm)) + enabled |= 1 << PIPE_B; + + if (g4x_compute_wm0(dev, PIPE_C, + &valleyview_wm_info, latency_ns, + &valleyview_cursor_wm_info, latency_ns, + &planec_wm, &cursorc_wm)) + enabled |= 1 << PIPE_C; + + if (single_plane_enabled(enabled) && + g4x_compute_srwm(dev, ffs(enabled) - 1, + sr_latency_ns, + &valleyview_wm_info, + &valleyview_cursor_wm_info, + &plane_sr, &ignore_cursor_sr) && + g4x_compute_srwm(dev, ffs(enabled) - 1, + 2*sr_latency_ns, + &valleyview_wm_info, + &valleyview_cursor_wm_info, + &ignore_plane_sr, &cursor_sr)) { + cxsr_enabled = true; + } else { + cxsr_enabled = false; + intel_set_memory_cxsr(dev_priv, false); + plane_sr = cursor_sr = 0; + } + + DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, " + "B: plane=%d, cursor=%d, C: plane=%d, cursor=%d, " + "SR: plane=%d, cursor=%d\n", + planea_wm, cursora_wm, + planeb_wm, cursorb_wm, + planec_wm, cursorc_wm, + plane_sr, cursor_sr); + + I915_WRITE(DSPFW1, + (plane_sr << DSPFW_SR_SHIFT) | + (cursorb_wm << DSPFW_CURSORB_SHIFT) | + (planeb_wm << DSPFW_PLANEB_SHIFT) | + (planea_wm << DSPFW_PLANEA_SHIFT)); + I915_WRITE(DSPFW2, + (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | + (cursora_wm << DSPFW_CURSORA_SHIFT)); + I915_WRITE(DSPFW3, + (I915_READ(DSPFW3) & ~DSPFW_CURSOR_SR_MASK) | + (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); + I915_WRITE(DSPFW9_CHV, + (I915_READ(DSPFW9_CHV) & ~(DSPFW_PLANEC_MASK | + DSPFW_CURSORC_MASK)) | + (planec_wm << DSPFW_PLANEC_SHIFT) | + (cursorc_wm << DSPFW_CURSORC_SHIFT)); + + if (cxsr_enabled) + intel_set_memory_cxsr(dev_priv, true); +} + static void g4x_update_wm(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; @@ -7119,7 +7198,7 @@ void intel_init_pm(struct drm_device *dev) else if (INTEL_INFO(dev)->gen == 8) dev_priv->display.init_clock_gating = gen8_init_clock_gating; } else if (IS_CHERRYVIEW(dev)) { - dev_priv->display.update_wm = valleyview_update_wm; + dev_priv->display.update_wm = cherryview_update_wm; dev_priv->display.init_clock_gating = cherryview_init_clock_gating; } else if (IS_VALLEYVIEW(dev)) { -- 2.39.5