[Intel-gfx] [PATCH 2/4] drm/i915: support 3 pipes on IVB+

[Jesse Barnes]

Well almost anyway.  IVB has 3 planes, pipes, transcoders, and FDI
interfaces, but only 2 pipe PLLs.  So two of the pipes must use the same
pipe timings (e.g. 2 DP plus one other, or two HDMI with the same mode
and one other, etc.).

Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
---
 drivers/gpu/drm/i915/i915_dma.c      |    4 +++-
 drivers/gpu/drm/i915/i915_drv.h      |    4 ++--
 drivers/gpu/drm/i915/intel_display.c |    7 +++++++
 drivers/gpu/drm/i915/intel_dp.c      |    2 +-
 drivers/gpu/drm/i915/intel_hdmi.c    |    2 +-
 drivers/gpu/drm/i915/intel_lvds.c    |    8 +++++---
 drivers/gpu/drm/i915/intel_sdvo.c    |    2 +-
 7 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 8a3942c..7a2ee0d 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -2035,7 +2035,9 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 	spin_lock_init(&dev_priv->error_lock);
 	spin_lock_init(&dev_priv->rps_lock);
 
-	if (IS_MOBILE(dev) || !IS_GEN2(dev))
+	if (IS_IVYBRIDGE(dev))
+		dev_priv->num_pipe = 3;
+	else if (IS_MOBILE(dev) || !IS_GEN2(dev))
 		dev_priv->num_pipe = 2;
 	else
 		dev_priv->num_pipe = 1;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 7916bd9..e865a3c 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -674,8 +674,8 @@ typedef struct drm_i915_private {
 	u32 pch_pf_pos, pch_pf_size;
 	int panel_t3, panel_t12;
 
-	struct drm_crtc *plane_to_crtc_mapping[2];
-	struct drm_crtc *pipe_to_crtc_mapping[2];
+	struct drm_crtc *plane_to_crtc_mapping[3];
+	struct drm_crtc *pipe_to_crtc_mapping[3];
 	wait_queue_head_t pending_flip_queue;
 	bool flip_pending_is_done;
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index df9d394..0dffb52 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2083,6 +2083,7 @@ static int ironlake_update_plane(struct drm_crtc *crtc,
 	switch (plane) {
 	case 0:
 	case 1:
+	case 2:
 		break;
 	default:
 		DRM_ERROR("Can't update plane %d in SAREA\n", plane);
@@ -2182,6 +2183,10 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
 	case 0:
 	case 1:
 		break;
+	case 2:
+		if (IS_IVYBRIDGE(dev))
+			break;
+		/* fall through otherwise */
 	default:
 		DRM_ERROR("no plane for crtc\n");
 		return -EINVAL;
@@ -2878,6 +2883,8 @@ static void ironlake_pch_enable(struct drm_crtc *crtc)
 			temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
 		else if (pipe == 1 && (temp & TRANSB_DPLL_ENABLE) == 0)
 			temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
+		else if (pipe == 2 && (temp & TRANSC_DPLL_ENABLE) == 0)
+			temp |= (TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL);
 		I915_WRITE(PCH_DPLL_SEL, temp);
 	}
 
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 44fef5e..edc369e 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1996,7 +1996,7 @@ intel_dp_init(struct drm_device *dev, int output_reg)
 	if (is_edp(intel_dp))
 		intel_encoder->clone_mask = (1 << INTEL_EDP_CLONE_BIT);
 
-	intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
+	intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
 	connector->interlace_allowed = true;
 	connector->doublescan_allowed = 0;
 
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 226ba83..11883c9 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -511,7 +511,7 @@ void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
 	connector->polled = DRM_CONNECTOR_POLL_HPD;
 	connector->interlace_allowed = 0;
 	connector->doublescan_allowed = 0;
-	intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
+	intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
 
 	/* Set up the DDC bus. */
 	if (sdvox_reg == SDVOB) {
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 31da77f..42f165a 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -888,9 +888,11 @@ bool intel_lvds_init(struct drm_device *dev)
 	intel_encoder->type = INTEL_OUTPUT_LVDS;
 
 	intel_encoder->clone_mask = (1 << INTEL_LVDS_CLONE_BIT);
-	intel_encoder->crtc_mask = (1 << 1);
-	if (INTEL_INFO(dev)->gen >= 5)
-		intel_encoder->crtc_mask |= (1 << 0);
+	if (HAS_PCH_SPLIT(dev))
+		intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
+	else
+		intel_encoder->crtc_mask = (1 << 1);
+
 	drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs);
 	drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs);
 	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 30fe554..f6853d6 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -2244,7 +2244,7 @@ intel_sdvo_output_setup(struct intel_sdvo *intel_sdvo, uint16_t flags)
 			      bytes[0], bytes[1]);
 		return false;
 	}
-	intel_sdvo->base.crtc_mask = (1 << 0) | (1 << 1);
+	intel_sdvo->base.crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
 
 	return true;
 }
-- 
1.7.4.1