drm/i915: Pass platform device to LPE audio notifier

This allows the LPE HDMI driver to clean up its global variable
reference.

Also drop to pass the eld pointer because the connection status and
the ELD bytes can be retrieved from the attached pdata.
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

drivers/gpu/drm/i915/intel_lpe_audio.c

@@ -378,8 +378,7 @@ void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
 	}
 
 	if (pdata->notify_audio_lpe)
-		pdata->notify_audio_lpe(
-			(eld != NULL) ? &pdata->eld : NULL);
+		pdata->notify_audio_lpe(dev_priv->lpe_audio.platdev);
 	else
 		pdata->notify_pending = true;
 

include/drm/intel_lpe_audio.h

@@ -27,6 +27,8 @@
 #include <linux/types.h>
 #include <linux/spinlock_types.h>
 
+struct platform_device;
+
 #define HDMI_MAX_ELD_BYTES	128
 
 struct intel_hdmi_lpe_audio_eld {
@@ -42,7 +44,7 @@ struct intel_hdmi_lpe_audio_pdata {
 	bool dp_output;
 	int link_rate;
 	struct intel_hdmi_lpe_audio_eld eld;
-	void (*notify_audio_lpe)(void *audio_ptr);
+	void (*notify_audio_lpe)(struct platform_device *pdev);
 	spinlock_t lpe_audio_slock;
 };
 

sound/x86/intel_hdmi_lpe_audio.c

@@ -439,15 +439,14 @@ static irqreturn_t display_pipe_interrupt_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static void notify_audio_lpe(void *audio_ptr)
+static void notify_audio_lpe(struct platform_device *pdev)
 {
-	struct hdmi_lpe_audio_ctx *ctx = get_hdmi_context();
-	struct intel_hdmi_lpe_audio_pdata *pdata = hlpe_pdev->dev.platform_data;
-	struct intel_hdmi_lpe_audio_eld *eld = audio_ptr;
+	struct hdmi_lpe_audio_ctx *ctx = platform_get_drvdata(pdev);
+	struct intel_hdmi_lpe_audio_pdata *pdata = pdev->dev.platform_data;
 
 	if (pdata->hdmi_connected != true) {
 
-		dev_dbg(&hlpe_pdev->dev, "%s: Event: HAD_NOTIFY_HOT_UNPLUG\n",
+		dev_dbg(&pdev->dev, "%s: Event: HAD_NOTIFY_HOT_UNPLUG\n",
 			__func__);
 
 		if (hlpe_state == hdmi_connector_status_connected) {
@@ -458,10 +457,11 @@ static void notify_audio_lpe(void *audio_ptr)
 			mid_hdmi_audio_signal_event(
 				HAD_EVENT_HOT_UNPLUG);
 		} else
-			dev_dbg(&hlpe_pdev->dev, "%s: Already Unplugged!\n",
+			dev_dbg(&pdev->dev, "%s: Already Unplugged!\n",
 				__func__);
 
-	} else if (eld != NULL) {
+	} else {
+		struct intel_hdmi_lpe_audio_eld *eld = &pdata->eld;
 
 		switch (eld->pipe_id) {
 		case 0:
@@ -474,7 +474,7 @@ static void notify_audio_lpe(void *audio_ptr)
 			ctx->had_config_offset = AUDIO_HDMI_CONFIG_C;
 			break;
 		default:
-			dev_dbg(&hlpe_pdev->dev, "Invalid pipe %d\n",
+			dev_dbg(&pdev->dev, "Invalid pipe %d\n",
 				eld->pipe_id);
 			break;
 		}
@@ -485,7 +485,7 @@ static void notify_audio_lpe(void *audio_ptr)
 
 		hlpe_state = hdmi_connector_status_connected;
 
-		dev_dbg(&hlpe_pdev->dev, "%s: HAD_NOTIFY_ELD : port = %d, tmds = %d\n",
+		dev_dbg(&pdev->dev, "%s: HAD_NOTIFY_ELD : port = %d, tmds = %d\n",
 			__func__, eld->port_id,	pdata->tmds_clock_speed);
 
 		if (pdata->tmds_clock_speed) {
@@ -494,8 +494,7 @@ static void notify_audio_lpe(void *audio_ptr)
 			ctx->link_rate = pdata->link_rate;
 			mid_hdmi_audio_signal_event(HAD_EVENT_MODE_CHANGING);
 		}
-	} else
-		dev_dbg(&hlpe_pdev->dev, "%s: Event: NULL EDID!!\n", __func__);
+	}
 }
 
 /**
@@ -606,7 +605,7 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
 	if (pdata->notify_pending) {
 
 		dev_dbg(&hlpe_pdev->dev, "%s: handle pending notification\n", __func__);
-		notify_audio_lpe(&pdata->eld);
+		notify_audio_lpe(pdev);
 		pdata->notify_pending = false;
 	}
 	spin_unlock_irqrestore(&pdata->lpe_audio_slock, flag_irq);