From 4f771f1055da08bc71a36dfdd0a2bde5beb666a4 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Tue, 23 Oct 2012 18:29:51 -0200 Subject: [PATCH] drm/i915: fork a Haswell version of ironlake_crtc_{enable, disable} The way we enable and disable the PCH on Haswell changed considerably since now we have only one PCH transcoder, so we can't keep the same asserts and we also can't just unconditionally disable the PCH transcoder for non-PCH outputs. So let's fork a Haswell version. These new functions look exactly the same as the ironlake versions. The next patches will introduce the differences. Signed-off-by: Paulo Zanoni Reviewed-by: Rodrigo Vivi Reviewed-by: Jani Nikula Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 183 ++++++++++++++++++++++++++- 1 file changed, 181 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 0fb55429bb9..eb4dba61703 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3283,6 +3283,99 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc) intel_wait_for_vblank(dev, intel_crtc->pipe); } +static void haswell_crtc_enable(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + struct intel_encoder *encoder; + int pipe = intel_crtc->pipe; + int plane = intel_crtc->plane; + u32 temp; + bool is_pch_port; + + WARN_ON(!crtc->enabled); + + if (intel_crtc->active) + return; + + intel_crtc->active = true; + intel_update_watermarks(dev); + + if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) { + temp = I915_READ(PCH_LVDS); + if ((temp & LVDS_PORT_EN) == 0) + I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN); + } + + is_pch_port = intel_crtc_driving_pch(crtc); + + if (is_pch_port) { + ironlake_fdi_pll_enable(intel_crtc); + } else { + assert_fdi_tx_disabled(dev_priv, pipe); + assert_fdi_rx_disabled(dev_priv, pipe); + } + + for_each_encoder_on_crtc(dev, crtc, encoder) + if (encoder->pre_enable) + encoder->pre_enable(encoder); + + if (IS_HASWELL(dev)) + intel_ddi_enable_pipe_clock(intel_crtc); + + /* Enable panel fitting for LVDS */ + if (dev_priv->pch_pf_size && + (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) || HAS_eDP)) { + /* Force use of hard-coded filter coefficients + * as some pre-programmed values are broken, + * e.g. x201. + */ + I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3); + I915_WRITE(PF_WIN_POS(pipe), dev_priv->pch_pf_pos); + I915_WRITE(PF_WIN_SZ(pipe), dev_priv->pch_pf_size); + } + + /* + * On ILK+ LUT must be loaded before the pipe is running but with + * clocks enabled + */ + intel_crtc_load_lut(crtc); + + if (IS_HASWELL(dev)) { + intel_ddi_set_pipe_settings(crtc); + intel_ddi_enable_pipe_func(crtc); + } + + intel_enable_pipe(dev_priv, pipe, is_pch_port); + intel_enable_plane(dev_priv, plane, pipe); + + if (is_pch_port) + ironlake_pch_enable(crtc); + + mutex_lock(&dev->struct_mutex); + intel_update_fbc(dev); + mutex_unlock(&dev->struct_mutex); + + intel_crtc_update_cursor(crtc, true); + + for_each_encoder_on_crtc(dev, crtc, encoder) + encoder->enable(encoder); + + if (HAS_PCH_CPT(dev)) + intel_cpt_verify_modeset(dev, intel_crtc->pipe); + + /* + * There seems to be a race in PCH platform hw (at least on some + * outputs) where an enabled pipe still completes any pageflip right + * away (as if the pipe is off) instead of waiting for vblank. As soon + * as the first vblank happend, everything works as expected. Hence just + * wait for one vblank before returning to avoid strange things + * happening. + */ + intel_wait_for_vblank(dev, intel_crtc->pipe); +} + static void ironlake_crtc_disable(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; @@ -3369,6 +3462,92 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc) mutex_unlock(&dev->struct_mutex); } +static void haswell_crtc_disable(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + struct intel_encoder *encoder; + int pipe = intel_crtc->pipe; + int plane = intel_crtc->plane; + u32 reg, temp; + + + if (!intel_crtc->active) + return; + + for_each_encoder_on_crtc(dev, crtc, encoder) + encoder->disable(encoder); + + intel_crtc_wait_for_pending_flips(crtc); + drm_vblank_off(dev, pipe); + intel_crtc_update_cursor(crtc, false); + + intel_disable_plane(dev_priv, plane, pipe); + + if (dev_priv->cfb_plane == plane) + intel_disable_fbc(dev); + + intel_disable_pipe(dev_priv, pipe); + + if (IS_HASWELL(dev)) + intel_ddi_disable_pipe_func(dev_priv, pipe); + + /* Disable PF */ + I915_WRITE(PF_CTL(pipe), 0); + I915_WRITE(PF_WIN_SZ(pipe), 0); + + if (IS_HASWELL(dev)) + intel_ddi_disable_pipe_clock(intel_crtc); + + for_each_encoder_on_crtc(dev, crtc, encoder) + if (encoder->post_disable) + encoder->post_disable(encoder); + + ironlake_fdi_disable(crtc); + + intel_disable_transcoder(dev_priv, pipe); + + if (HAS_PCH_CPT(dev)) { + /* disable TRANS_DP_CTL */ + reg = TRANS_DP_CTL(pipe); + temp = I915_READ(reg); + temp &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK); + temp |= TRANS_DP_PORT_SEL_NONE; + I915_WRITE(reg, temp); + + /* disable DPLL_SEL */ + temp = I915_READ(PCH_DPLL_SEL); + switch (pipe) { + case 0: + temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLB_SEL); + break; + case 1: + temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL); + break; + case 2: + /* C shares PLL A or B */ + temp &= ~(TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL); + break; + default: + BUG(); /* wtf */ + } + I915_WRITE(PCH_DPLL_SEL, temp); + } + + /* disable PCH DPLL */ + intel_disable_pch_pll(intel_crtc); + + ironlake_fdi_pll_disable(intel_crtc); + + intel_crtc->active = false; + intel_update_watermarks(dev); + + mutex_lock(&dev->struct_mutex); + intel_update_fbc(dev); + mutex_unlock(&dev->struct_mutex); +} + static void ironlake_crtc_off(struct drm_crtc *crtc) { struct intel_crtc *intel_crtc = to_intel_crtc(crtc); @@ -8109,8 +8288,8 @@ static void intel_init_display(struct drm_device *dev) /* We always want a DPMS function */ if (IS_HASWELL(dev)) { dev_priv->display.crtc_mode_set = haswell_crtc_mode_set; - dev_priv->display.crtc_enable = ironlake_crtc_enable; - dev_priv->display.crtc_disable = ironlake_crtc_disable; + dev_priv->display.crtc_enable = haswell_crtc_enable; + dev_priv->display.crtc_disable = haswell_crtc_disable; dev_priv->display.off = haswell_crtc_off; dev_priv->display.update_plane = ironlake_update_plane; } else if (HAS_PCH_SPLIT(dev)) { -- 2.46.0