drm/i915/dsi: call wait_for_dsi_fifo_empty() for each dsi port

Add port parameter to wait_for_dsi_fifo_empty, and call it for each dsi
port.

We can now remove the transitional intel_dsi_pipe_to_port() function.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-By: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_dsi.c

@@ -42,13 +42,11 @@ static const struct intel_dsi_device intel_dsi_devices[] = {
 	},
 };
 
-static void wait_for_dsi_fifo_empty(struct intel_dsi *intel_dsi)
+static void wait_for_dsi_fifo_empty(struct intel_dsi *intel_dsi, enum port port)
 {
 	struct drm_encoder *encoder = &intel_dsi->base.base;
 	struct drm_device *dev = encoder->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
-	enum port port = intel_dsi_pipe_to_port(intel_crtc->pipe);
 	u32 mask;
 
 	mask = LP_CTRL_FIFO_EMPTY | HS_CTRL_FIFO_EMPTY |
@@ -230,7 +228,8 @@ static void intel_dsi_enable(struct intel_encoder *encoder)
 		if (intel_dsi->dev.dev_ops->enable)
 			intel_dsi->dev.dev_ops->enable(&intel_dsi->dev);
 
-		wait_for_dsi_fifo_empty(intel_dsi);
+		for_each_dsi_port(port, intel_dsi->ports)
+			wait_for_dsi_fifo_empty(intel_dsi, port);
 
 		intel_dsi_port_enable(encoder);
 	}
@@ -243,6 +242,7 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder)
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
 	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
 	enum pipe pipe = intel_crtc->pipe;
+	enum port port;
 	u32 tmp;
 
 	DRM_DEBUG_KMS("\n");
@@ -272,7 +272,8 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder)
 	if (intel_dsi->dev.dev_ops->send_otp_cmds)
 		intel_dsi->dev.dev_ops->send_otp_cmds(&intel_dsi->dev);
 
-	wait_for_dsi_fifo_empty(intel_dsi);
+	for_each_dsi_port(port, intel_dsi->ports)
+		wait_for_dsi_fifo_empty(intel_dsi, port);
 
 	/* Enable port in pre-enable phase itself because as per hw team
 	 * recommendation, port should be enabled befor plane & pipe */
@@ -315,7 +316,8 @@ static void intel_dsi_disable(struct intel_encoder *encoder)
 	DRM_DEBUG_KMS("\n");
 
 	if (is_vid_mode(intel_dsi)) {
-		wait_for_dsi_fifo_empty(intel_dsi);
+		for_each_dsi_port(port, intel_dsi->ports)
+			wait_for_dsi_fifo_empty(intel_dsi, port);
 
 		intel_dsi_port_disable(encoder);
 		msleep(2);
@@ -344,7 +346,8 @@ static void intel_dsi_disable(struct intel_encoder *encoder)
 	if (intel_dsi->dev.dev_ops->disable)
 		intel_dsi->dev.dev_ops->disable(&intel_dsi->dev);
 
-	wait_for_dsi_fifo_empty(intel_dsi);
+	for_each_dsi_port(port, intel_dsi->ports)
+		wait_for_dsi_fifo_empty(intel_dsi, port);
 }
 
 static void intel_dsi_clear_device_ready(struct intel_encoder *encoder)

drivers/gpu/drm/i915/intel_dsi.h

@@ -137,18 +137,6 @@ struct intel_dsi {
 	u16 panel_pwr_cycle_delay;
 };
 
-/* XXX: Transitional before dual port configuration */
-static inline enum port intel_dsi_pipe_to_port(enum pipe pipe)
-{
-	if (pipe == PIPE_A)
-		return PORT_A;
-	else if (pipe == PIPE_B)
-		return PORT_C;
-
-	WARN(1, "DSI on pipe %c, assuming port C\n", pipe_name(pipe));
-	return PORT_C;
-}
-
 #define for_each_dsi_port(__port, __ports_mask) \
 	for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++)	\
 		if ((__ports_mask) & (1 << (__port)))