drm/i915: Clean up the LPE audio platform data

Split the LPE audio platform data into a port specific
chunk and device specific chunk. Eventually we'll have
a port specific chunk for each port, but for now we'll
stick to just one.

We'll also get rid of the intel_hdmi_lpe_audio_eld structure
which doesn't seem to have any real reason to exist.

v2: Organize per port instead of per pipe

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/20170427160231.13337-9-ville.syrjala@linux.intel.com
Reviewed-by: Takashi Iwai <tiwai@suse.de>

drivers/gpu/drm/i915/intel_lpe_audio.c

@@ -111,7 +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;
+	pdata->port.pipe = -1;
 	spin_lock_init(&pdata->lpe_audio_slock);
 
 	platdev = platform_device_register_full(&pinfo);
@@ -320,38 +320,36 @@ void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
 			    const void *eld, int ls_clock, bool dp_output)
 {
 	unsigned long irq_flags;
-	struct intel_hdmi_lpe_audio_pdata *pdata = NULL;
+	struct intel_hdmi_lpe_audio_pdata *pdata;
+	struct intel_hdmi_lpe_audio_port_pdata *ppdata;
 	u32 audio_enable;
 
 	if (!HAS_LPE_AUDIO(dev_priv))
 		return;
 
-	pdata = dev_get_platdata(
-		&(dev_priv->lpe_audio.platdev->dev));
+	pdata = dev_get_platdata(&dev_priv->lpe_audio.platdev->dev);
+	ppdata = &pdata->port;
 
 	spin_lock_irqsave(&pdata->lpe_audio_slock, irq_flags);
 
 	audio_enable = I915_READ(VLV_AUD_PORT_EN_DBG(port));
 
-	pdata->eld.port_id = port;
+	ppdata->port = port;
 
 	if (eld != NULL) {
-		memcpy(pdata->eld.eld_data, eld,
-			HDMI_MAX_ELD_BYTES);
-		pdata->pipe = pipe;
-		pdata->ls_clock = ls_clock;
-		pdata->dp_output = dp_output;
+		memcpy(ppdata->eld, eld, HDMI_MAX_ELD_BYTES);
+		ppdata->pipe = pipe;
+		ppdata->ls_clock = ls_clock;
+		ppdata->dp_output = dp_output;
 
 		/* Unmute the amp for both DP and HDMI */
 		I915_WRITE(VLV_AUD_PORT_EN_DBG(port),
 			   audio_enable & ~VLV_AMP_MUTE);
-
 	} else {
-		memset(pdata->eld.eld_data, 0,
-			HDMI_MAX_ELD_BYTES);
-		pdata->pipe = -1;
-		pdata->ls_clock = 0;
-		pdata->dp_output = false;
+		memset(ppdata->eld, 0, HDMI_MAX_ELD_BYTES);
+		ppdata->pipe = -1;
+		ppdata->ls_clock = 0;
+		ppdata->dp_output = false;
 
 		/* Mute the amp for both DP and HDMI */
 		I915_WRITE(VLV_AUD_PORT_EN_DBG(port),

include/drm/intel_lpe_audio.h

@@ -31,16 +31,17 @@ struct platform_device;
 
 #define HDMI_MAX_ELD_BYTES	128
 
-struct intel_hdmi_lpe_audio_eld {
-	int port_id;
-	unsigned char eld_data[HDMI_MAX_ELD_BYTES];
-};
-
-struct intel_hdmi_lpe_audio_pdata {
+struct intel_hdmi_lpe_audio_port_pdata {
+	u8 eld[HDMI_MAX_ELD_BYTES];
+	int port;
 	int pipe;
 	int ls_clock;
 	bool dp_output;
-	struct intel_hdmi_lpe_audio_eld eld;
+};
+
+struct intel_hdmi_lpe_audio_pdata {
+	struct intel_hdmi_lpe_audio_port_pdata port;
+
 	void (*notify_audio_lpe)(struct platform_device *pdev);
 	spinlock_t lpe_audio_slock;
 };

sound/x86/intel_hdmi_audio.c

@@ -1556,21 +1556,20 @@ static void had_audio_wq(struct work_struct *work)
 	struct snd_intelhad *ctx =
 		container_of(work, struct snd_intelhad, hdmi_audio_wq);
 	struct intel_hdmi_lpe_audio_pdata *pdata = ctx->dev->platform_data;
+	struct intel_hdmi_lpe_audio_port_pdata *ppdata = &pdata->port;
 
 	pm_runtime_get_sync(ctx->dev);
 	mutex_lock(&ctx->mutex);
-	if (pdata->pipe < 0) {
+	if (ppdata->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 */
 		had_process_hot_unplug(ctx);
 	} else {
-		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__, ppdata->port, ppdata->ls_clock);
 
-		switch (pdata->pipe) {
+		switch (ppdata->pipe) {
 		case 0:
 			ctx->had_config_offset = AUDIO_HDMI_CONFIG_A;
 			break;
@@ -1582,18 +1581,18 @@ static void had_audio_wq(struct work_struct *work)
 			break;
 		default:
 			dev_dbg(ctx->dev, "Invalid pipe %d\n",
-				pdata->pipe);
+				ppdata->pipe);
 			break;
 		}
 
-		memcpy(ctx->eld, eld->eld_data, sizeof(ctx->eld));
+		memcpy(ctx->eld, ppdata->eld, sizeof(ctx->eld));
 
-		ctx->dp_output = pdata->dp_output;
+		ctx->dp_output = ppdata->dp_output;
 		if (ctx->dp_output) {
 			ctx->tmds_clock_speed = 0;
-			ctx->link_rate = pdata->ls_clock;
+			ctx->link_rate = ppdata->ls_clock;
 		} else {
-			ctx->tmds_clock_speed = pdata->ls_clock;
+			ctx->tmds_clock_speed = ppdata->ls_clock;
 			ctx->link_rate = 0;
 		}