drm/i915: Remove hdmi_connected from LPE audio pdata

We can determine that the pipe was shut down from pipe<0, so there's
no point in duplicating that information as 'hdmi_connected'.

v2: Use pipe<0 instead of port<0 as we'll want to do per-port
    PCM devices later
    Initialize pipe to -1 to inidicate inactive initial state

Cc: Takashi Iwai <tiwai@suse.de>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170427160231.13337-7-ville.syrjala@linux.intel.com
Reviewed-by: Takashi Iwai <tiwai@suse.de>

drivers/gpu/drm/i915/intel_lpe_audio.c

@@ -111,6 +111,7 @@ lpe_audio_platdev_create(struct drm_i915_private *dev_priv)
 	pinfo.size_data = sizeof(*pdata);
 	pinfo.dma_mask = DMA_BIT_MASK(32);
 
+	pdata->pipe = -1;
 	spin_lock_init(&pdata->lpe_audio_slock);
 
 	platdev = platform_device_register_full(&pinfo);
@@ -332,12 +333,12 @@ void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
 
 	audio_enable = I915_READ(VLV_AUD_PORT_EN_DBG(port));
 
+	pdata->eld.port_id = port;
+
 	if (eld != NULL) {
 		memcpy(pdata->eld.eld_data, eld,
 			HDMI_MAX_ELD_BYTES);
-		pdata->eld.port_id = port;
-		pdata->eld.pipe_id = pipe;
-		pdata->hdmi_connected = true;
+		pdata->pipe = pipe;
 		pdata->ls_clock = ls_clock;
 		pdata->dp_output = dp_output;
 
@@ -348,7 +349,7 @@ void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
 	} else {
 		memset(pdata->eld.eld_data, 0,
 			HDMI_MAX_ELD_BYTES);
-		pdata->hdmi_connected = false;
+		pdata->pipe = -1;
 		pdata->ls_clock = 0;
 		pdata->dp_output = false;
 

include/drm/intel_lpe_audio.h

@@ -33,13 +33,12 @@ struct platform_device;
 
 struct intel_hdmi_lpe_audio_eld {
 	int port_id;
-	int pipe_id;
 	unsigned char eld_data[HDMI_MAX_ELD_BYTES];
 };
 
 struct intel_hdmi_lpe_audio_pdata {
+	int pipe;
 	int ls_clock;
-	bool hdmi_connected;
 	bool dp_output;
 	struct intel_hdmi_lpe_audio_eld eld;
 	void (*notify_audio_lpe)(struct platform_device *pdev);

sound/x86/intel_hdmi_audio.c

@@ -1559,7 +1559,7 @@ static void had_audio_wq(struct work_struct *work)
 
 	pm_runtime_get_sync(ctx->dev);
 	mutex_lock(&ctx->mutex);
-	if (!pdata->hdmi_connected) {
+	if (pdata->pipe < 0) {
 		dev_dbg(ctx->dev, "%s: Event: HAD_NOTIFY_HOT_UNPLUG\n",
 			__func__);
 		memset(ctx->eld, 0, sizeof(ctx->eld)); /* clear the old ELD */
@@ -1568,9 +1568,9 @@ static void had_audio_wq(struct work_struct *work)
 		struct intel_hdmi_lpe_audio_eld *eld = &pdata->eld;
 
 		dev_dbg(ctx->dev, "%s: HAD_NOTIFY_ELD : port = %d, tmds = %d\n",
-			__func__, eld->port_id,	pdata->ls_clock);
+			__func__, eld->port_id, pdata->ls_clock);
 
-		switch (eld->pipe_id) {
+		switch (pdata->pipe) {
 		case 0:
 			ctx->had_config_offset = AUDIO_HDMI_CONFIG_A;
 			break;
@@ -1582,7 +1582,7 @@ static void had_audio_wq(struct work_struct *work)
 			break;
 		default:
 			dev_dbg(ctx->dev, "Invalid pipe %d\n",
-				eld->pipe_id);
+				pdata->pipe);
 			break;
 		}