[PATCH 04/09] drm/i915: Add "port" field to struct intel_dp

[Paulo Zanoni <przanoni@gmail.com>]

From: Shobhit Kumar <shobhit.kumar@intel.com>

Useful for Haswell, it has a lot of DP registers that have one
instance per port.

Changes from Paulo:
- Completely change the commit message
- Rename "ddi_port" to "port"

Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c  |   10 +++++++---
 drivers/gpu/drm/i915/intel_drv.h |    1 +
 2 files changed, 8 insertions(+), 3 deletions(-)

I believe "port" is better than "ddi_port" since the "port" variable can be
used in the previous gens too...

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index be5c47e..a5aee26 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2477,12 +2477,16 @@ intel_dp_init(struct drm_device *dev, int output_reg)
 
 	connector->polled = DRM_CONNECTOR_POLL_HPD;
 
-	if (output_reg == DP_B || output_reg == PCH_DP_B)
+	if (output_reg == DP_B || output_reg == PCH_DP_B) {
 		intel_encoder->clone_mask = (1 << INTEL_DP_B_CLONE_BIT);
-	else if (output_reg == DP_C || output_reg == PCH_DP_C)
+		intel_dp->port = PORT_B;
+	} else if (output_reg == DP_C || output_reg == PCH_DP_C) {
 		intel_encoder->clone_mask = (1 << INTEL_DP_C_CLONE_BIT);
-	else if (output_reg == DP_D || output_reg == PCH_DP_D)
+		intel_dp->port = PORT_C;
+	} else if (output_reg == DP_D || output_reg == PCH_DP_D) {
 		intel_encoder->clone_mask = (1 << INTEL_DP_D_CLONE_BIT);
+		intel_dp->port = PORT_D;
+	}
 
 	if (is_edp(intel_dp)) {
 		intel_encoder->clone_mask = (1 << INTEL_EDP_CLONE_BIT);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 48a0fcb..1145403 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -316,6 +316,7 @@ struct intel_dp {
 	uint8_t  link_configuration[DP_LINK_CONFIGURATION_SIZE];
 	bool has_audio;
 	enum hdmi_force_audio force_audio;
+	int port;
 	uint32_t color_range;
 	int dpms_mode;
 	uint8_t link_bw;
-- 
1.7.10.2