[Intel-gfx] [BXT MIPI PATCH 2/2] drm/i915: dual link pipe selection for bxt

[Deepak M]

Pipe is assigned based on the port, but it should be
based on current crtc. Correcting the same in this patch.

Signed-off-by: Deepak M <m.deepak at intel.com>
---
 drivers/gpu/drm/i915/intel_dsi.c | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index f5df49b..0654b33 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -898,20 +898,25 @@ static void intel_dsi_prepare(struct intel_encoder *intel_encoder)
 			I915_WRITE(MIPI_CTRL(port), tmp |
 					READ_REQUEST_PRIORITY_HIGH);
 		} else if (IS_BROXTON(dev)) {
-			/*
-			 * FIXME:
-			 * BXT can connect any PIPE to any MIPI port.
-			 * Select the pipe based on the MIPI port read from
-			 * VBT for now. Pick PIPE A for MIPI port A and C
-			 * for port C.
-			 */
+			enum pipe pipe = intel_crtc->pipe;
+
 			tmp = I915_READ(MIPI_CTRL(port));
 			tmp &= ~BXT_PIPE_SELECT_MASK;
 
-			if (port == PORT_A)
+			switch (pipe) {
+			case PIPE_A:
 				tmp |= BXT_PIPE_SELECT_A;
-			else if (port == PORT_C)
+				break;
+			case PIPE_B:
+				tmp |= BXT_PIPE_SELECT_B;
+				break;
+			case PIPE_C:
 				tmp |= BXT_PIPE_SELECT_C;
+				break;
+			default:
+				DRM_ERROR("Unknown pipe used\n");
+				return;
+			}
 
 			I915_WRITE(MIPI_CTRL(port), tmp);
 		}
-- 
1.9.1