[Intel-gfx] [PATCH] drm/i915/bxt: Added identifier for MIPI transcoder.

[Animesh Manna]

Changes done:
- Added identifier for Mipi transcoder A and C.
- Added power domain identifier for newly added mipi trancoder.
- Initialized transcoder for mipi during compute config.

v1: Initial RFC version.

v2: Rebased on tot.

Cc: Jani Nikula <jani.nikula at intel.com>
Signed-off-by: Animesh Manna <animesh.manna at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h         | 4 ++++
 drivers/gpu/drm/i915/intel_dsi.c        | 8 ++++++++
 drivers/gpu/drm/i915/intel_runtime_pm.c | 6 ++++++
 3 files changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 65a2cd0..c484df8 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -122,6 +122,8 @@ enum transcoder {
 	TRANSCODER_B,
 	TRANSCODER_C,
 	TRANSCODER_EDP,
+	TRANSCODER_MIPI_A,
+	TRANSCODER_MIPI_C,
 	I915_MAX_TRANSCODERS
 };
 #define transcoder_name(t) ((t) + 'A')
@@ -176,6 +178,8 @@ enum intel_display_power_domain {
 	POWER_DOMAIN_TRANSCODER_B,
 	POWER_DOMAIN_TRANSCODER_C,
 	POWER_DOMAIN_TRANSCODER_EDP,
+	POWER_DOMAIN_TRANSCODER_MIPI_A,
+	POWER_DOMAIN_TRANSCODER_MIPI_C,
 	POWER_DOMAIN_PORT_DDI_A_LANES,
 	POWER_DOMAIN_PORT_DDI_B_LANES,
 	POWER_DOMAIN_PORT_DDI_C_LANES,
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 91cef35..4f2b513 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -273,6 +273,7 @@ static bool intel_dsi_compute_config(struct intel_encoder *encoder,
 	struct intel_connector *intel_connector = intel_dsi->attached_connector;
 	struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode;
 	struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
+	struct drm_device *dev = intel_connector->base.dev;
 
 	DRM_DEBUG_KMS("\n");
 
@@ -284,6 +285,13 @@ static bool intel_dsi_compute_config(struct intel_encoder *encoder,
 	/* DSI uses short packets for sync events, so clear mode flags for DSI */
 	adjusted_mode->flags = 0;
 
+	if (IS_BROXTON(dev)) {
+		if (intel_dsi->ports & (1 << PORT_A))
+			pipe_config->cpu_transcoder = TRANSCODER_MIPI_A;
+		else
+			pipe_config->cpu_transcoder = TRANSCODER_MIPI_C;
+	}
+
 	return true;
 }
 
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index bbca527..611dc1e 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -87,6 +87,10 @@ intel_display_power_domain_str(enum intel_display_power_domain domain)
 		return "TRANSCODER_B";
 	case POWER_DOMAIN_TRANSCODER_C:
 		return "TRANSCODER_C";
+	case POWER_DOMAIN_TRANSCODER_MIPI_A:
+		return "TRANSCODER_MIPI_A";
+	case POWER_DOMAIN_TRANSCODER_MIPI_C:
+		return "TRANSCODER_MIPI_C";
 	case POWER_DOMAIN_TRANSCODER_EDP:
 		return "TRANSCODER_EDP";
 	case POWER_DOMAIN_PORT_DDI_A_LANES:
@@ -403,6 +407,8 @@ static void hsw_set_power_well(struct drm_i915_private *dev_priv,
 	BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS |		\
 	BIT(POWER_DOMAIN_PIPE_A) |			\
 	BIT(POWER_DOMAIN_TRANSCODER_EDP) |		\
+	BIT(POWER_DOMAIN_TRANSCODER_MIPI_A) |		\
+	BIT(POWER_DOMAIN_TRANSCODER_MIPI_C) |		\
 	BIT(POWER_DOMAIN_PIPE_A_PANEL_FITTER) |		\
 	BIT(POWER_DOMAIN_PORT_DDI_A_LANES) |		\
 	BIT(POWER_DOMAIN_AUX_A) |			\
-- 
2.0.2