[v2,17/20] drm/i915/icl: Get DSI transcoder for a given port

Commit Message

Chauhan, Madhav July 3, 2018, 12:47 p.m. UTC

This patch adds a helper function to retrieve DSI
transcoder for a given DSI port using newly defined
enum names for DSI transcoders.

Signed-off-by: Madhav Chauhan <[e-mail]>
---
 drivers/gpu/drm/i915/intel_display.h | 6 ++++--
 drivers/gpu/drm/i915/intel_dsi_new.c | 9 +++++++++
 2 files changed, 13 insertions(+), 2 deletions(-)

Patch

diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h
index a77dd29..8104c410 100644
--- a/drivers/gpu/drm/i915/intel_display.h
+++ b/drivers/gpu/drm/i915/intel_display.h
@@ -43,8 +43,10 @@  enum transcoder {
 	TRANSCODER_B,
 	TRANSCODER_C,
 	TRANSCODER_EDP,
-	TRANSCODER_DSI_A,
-	TRANSCODER_DSI_C,
+	TRANSCODER_DSI_0,
+	TRANSCODER_DSI_1,
+	TRANSCODER_DSI_A = TRANSCODER_DSI_0,	/* legacy DSI */
+	TRANSCODER_DSI_C = TRANSCODER_DSI_1,	/* legacy DSI */
 
 	I915_MAX_TRANSCODERS
 };
diff --git a/drivers/gpu/drm/i915/intel_dsi_new.c b/drivers/gpu/drm/i915/intel_dsi_new.c
index 54077f8..97b9b1e 100644
--- a/drivers/gpu/drm/i915/intel_dsi_new.c
+++ b/drivers/gpu/drm/i915/intel_dsi_new.c
@@ -27,6 +27,15 @@ 
 
 #include "intel_dsi.h"
 
+static enum transcoder __attribute__((unused)) dsi_port_to_transcoder(
+								enum port port)
+{
+	if (port == PORT_A)
+		return TRANSCODER_DSI_0;
+	else
+		return TRANSCODER_DSI_1;
+}
+
 static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);