1 files changed, 16 insertions, 67 deletions

diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index c9fb432d4cbd..80d1e499a18d 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -141,24 +141,16 @@ struct zynqmp_disp_layer {
  * struct zynqmp_disp - Display controller
  * @dev: Device structure
  * @dpsub: Display subsystem
- * @blend.base: Register I/O base address for the blender
- * @avbuf.base: Register I/O base address for the audio/video buffer manager
- * @audio.base: Registers I/O base address for the audio mixer
+ * @blend: Register I/O base address for the blender
+ * @avbuf: Register I/O base address for the audio/video buffer manager
  * @layers: Layers (planes)
  */
 struct zynqmp_disp {
 	struct device *dev;
 	struct zynqmp_dpsub *dpsub;
 
-	struct {
-		void __iomem *base;
-	} blend;
-	struct {
-		void __iomem *base;
-	} avbuf;
-	struct {
-		void __iomem *base;
-	} audio;
+	void __iomem *blend;
+	void __iomem *avbuf;
 
 	struct zynqmp_disp_layer layers[ZYNQMP_DPSUB_NUM_LAYERS];
 };
@@ -410,12 +402,12 @@ static const struct zynqmp_disp_format avbuf_live_fmts[] = {
 
 static u32 zynqmp_disp_avbuf_read(struct zynqmp_disp *disp, int reg)
 {
-	return readl(disp->avbuf.base + reg);
+	return readl(disp->avbuf + reg);
 }
 
 static void zynqmp_disp_avbuf_write(struct zynqmp_disp *disp, int reg, u32 val)
 {
-	writel(val, disp->avbuf.base + reg);
+	writel(val, disp->avbuf + reg);
 }
 
 static bool zynqmp_disp_layer_is_video(const struct zynqmp_disp_layer *layer)
@@ -651,7 +643,7 @@ static void zynqmp_disp_avbuf_disable(struct zynqmp_disp *disp)
 
 static void zynqmp_disp_blend_write(struct zynqmp_disp *disp, int reg, u32 val)
 {
-	writel(val, disp->blend.base + reg);
+	writel(val, disp->blend + reg);
 }
 
 /*
@@ -872,42 +864,6 @@ static void zynqmp_disp_blend_layer_disable(struct zynqmp_disp *disp,
 }
 
 /* -----------------------------------------------------------------------------
- * Audio Mixer
- */
-
-static void zynqmp_disp_audio_write(struct zynqmp_disp *disp, int reg, u32 val)
-{
-	writel(val, disp->audio.base + reg);
-}
-
-/**
- * zynqmp_disp_audio_enable - Enable the audio mixer
- * @disp: Display controller
- *
- * Enable the audio mixer by de-asserting the soft reset. The audio state is set to
- * default values by the reset, set the default mixer volume explicitly.
- */
-static void zynqmp_disp_audio_enable(struct zynqmp_disp *disp)
-{
-	/* Clear the audio soft reset register as it's an non-reset flop. */
-	zynqmp_disp_audio_write(disp, ZYNQMP_DISP_AUD_SOFT_RESET, 0);
-	zynqmp_disp_audio_write(disp, ZYNQMP_DISP_AUD_MIXER_VOLUME,
-				ZYNQMP_DISP_AUD_MIXER_VOLUME_NO_SCALE);
-}
-
-/**
- * zynqmp_disp_audio_disable - Disable the audio mixer
- * @disp: Display controller
- *
- * Disable the audio mixer by asserting its soft reset.
- */
-static void zynqmp_disp_audio_disable(struct zynqmp_disp *disp)
-{
-	zynqmp_disp_audio_write(disp, ZYNQMP_DISP_AUD_SOFT_RESET,
-				ZYNQMP_DISP_AUD_SOFT_RESET_AUD_SRST);
-}
-
-/* -----------------------------------------------------------------------------
  * ZynqMP Display Layer & DRM Plane
  */
 
@@ -1206,6 +1162,9 @@ static void zynqmp_disp_layer_release_dma(struct zynqmp_disp *disp,
 {
 	unsigned int i;
 
+	if (!layer->info)
+		return;
+
 	for (i = 0; i < layer->info->num_channels; i++) {
 		struct zynqmp_disp_layer_dma *dma = &layer->dmas[i];
 
@@ -1344,8 +1303,6 @@ void zynqmp_disp_enable(struct zynqmp_disp *disp)
 					     disp->dpsub->vid_clk_from_ps);
 	zynqmp_disp_avbuf_enable_channels(disp);
 	zynqmp_disp_avbuf_enable_audio(disp);
-
-	zynqmp_disp_audio_enable(disp);
 }
 
 /**
@@ -1354,8 +1311,6 @@ void zynqmp_disp_enable(struct zynqmp_disp *disp)
  */
 void zynqmp_disp_disable(struct zynqmp_disp *disp)
 {
-	zynqmp_disp_audio_disable(disp);
-
 	zynqmp_disp_avbuf_disable_audio(disp);
 	zynqmp_disp_avbuf_disable_channels(disp);
 	zynqmp_disp_avbuf_disable(disp);
@@ -1412,21 +1367,15 @@ int zynqmp_disp_probe(struct zynqmp_dpsub *dpsub)
 	disp->dev = &pdev->dev;
 	disp->dpsub = dpsub;
 
-	disp->blend.base = devm_platform_ioremap_resource_byname(pdev, "blend");
-	if (IS_ERR(disp->blend.base)) {
-		ret = PTR_ERR(disp->blend.base);
-		goto error;
-	}
-
-	disp->avbuf.base = devm_platform_ioremap_resource_byname(pdev, "av_buf");
-	if (IS_ERR(disp->avbuf.base)) {
-		ret = PTR_ERR(disp->avbuf.base);
+	disp->blend = devm_platform_ioremap_resource_byname(pdev, "blend");
+	if (IS_ERR(disp->blend)) {
+		ret = PTR_ERR(disp->blend);
 		goto error;
 	}
 
-	disp->audio.base = devm_platform_ioremap_resource_byname(pdev, "aud");
-	if (IS_ERR(disp->audio.base)) {
-		ret = PTR_ERR(disp->audio.base);
+	disp->avbuf = devm_platform_ioremap_resource_byname(pdev, "av_buf");
+	if (IS_ERR(disp->avbuf)) {
+		ret = PTR_ERR(disp->avbuf);
 		goto error;
 	}