drm/i915/audio: Remove CL/BLC audio stuff

We don't use the audio code on crestline (CL) since it doesn't
support native HDMI output, and SDVO has it's own way of doing
audio.

And Bearlake-C (BLC) doesn't even exist in the real world, so
no point it trying to deal with it.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-4-ville.syrjala@linux.intel.com

drivers/gpu/drm/i915/display/intel_audio.c

@@ -336,17 +336,11 @@ static void g4x_audio_codec_disable(struct intel_encoder *encoder,
 				    const struct drm_connector_state *old_conn_state)
 {
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	u32 eldv, tmp;
-
-	tmp = intel_de_read(i915, G4X_AUD_VID_DID);
-	if (tmp == INTEL_AUDIO_DEVBLC || tmp == INTEL_AUDIO_DEVCL)
-		eldv = G4X_ELDV_DEVCL_DEVBLC;
-	else
-		eldv = G4X_ELDV_DEVCTG;
+	u32 tmp;
 
 	/* Invalidate ELD */
 	tmp = intel_de_read(i915, G4X_AUD_CNTL_ST);
-	tmp &= ~eldv;
+	tmp &= ~G4X_ELDV;
 	intel_de_write(i915, G4X_AUD_CNTL_ST, tmp);
 }
 
@@ -357,24 +351,17 @@ static void g4x_audio_codec_enable(struct intel_encoder *encoder,
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	struct drm_connector *connector = conn_state->connector;
 	const u8 *eld = connector->eld;
-	u32 eldv;
 	u32 tmp;
 	int len, i;
 
-	tmp = intel_de_read(i915, G4X_AUD_VID_DID);
-	if (tmp == INTEL_AUDIO_DEVBLC || tmp == INTEL_AUDIO_DEVCL)
-		eldv = G4X_ELDV_DEVCL_DEVBLC;
-	else
-		eldv = G4X_ELDV_DEVCTG;
-
 	if (intel_eld_uptodate(connector,
-			       G4X_AUD_CNTL_ST, eldv,
+			       G4X_AUD_CNTL_ST, G4X_ELDV,
 			       G4X_AUD_CNTL_ST, G4X_ELD_ADDR_MASK,
 			       G4X_HDMIW_HDMIEDID))
 		return;
 
 	tmp = intel_de_read(i915, G4X_AUD_CNTL_ST);
-	tmp &= ~(eldv | G4X_ELD_ADDR_MASK);
+	tmp &= ~(G4X_ELDV | G4X_ELD_ADDR_MASK);
 	len = (tmp >> 9) & 0x1f;		/* ELD buffer size */
 	intel_de_write(i915, G4X_AUD_CNTL_ST, tmp);
 
@@ -384,7 +371,7 @@ static void g4x_audio_codec_enable(struct intel_encoder *encoder,
 			       *((const u32 *)eld + i));
 
 	tmp = intel_de_read(i915, G4X_AUD_CNTL_ST);
-	tmp |= eldv;
+	tmp |= G4X_ELDV;
 	intel_de_write(i915, G4X_AUD_CNTL_ST, tmp);
 }
 

drivers/gpu/drm/i915/display/intel_audio_regs.h

@@ -8,14 +8,8 @@
 
 #include "i915_reg_defs.h"
 
-#define G4X_AUD_VID_DID			_MMIO(DISPLAY_MMIO_BASE(i915) + 0x62020)
-#define   INTEL_AUDIO_DEVCL		0x808629FB
-#define   INTEL_AUDIO_DEVBLC		0x80862801
-#define   INTEL_AUDIO_DEVCTG		0x80862802
-
 #define G4X_AUD_CNTL_ST			_MMIO(0x620B4)
-#define   G4X_ELDV_DEVCL_DEVBLC		(1 << 13)
-#define   G4X_ELDV_DEVCTG		(1 << 14)
+#define   G4X_ELDV			(1 << 14)
 #define   G4X_ELD_ADDR_MASK		(0xf << 5)
 #define   G4X_ELD_ACK			(1 << 4)
 #define G4X_HDMIW_HDMIEDID		_MMIO(0x6210C)