4 files changed, 37 insertions, 7 deletions
diff --git a/drivers/gpu/drm/kmb/kmb_drv.c b/drivers/gpu/drm/kmb/kmb_drv.c
index 96ea1a2c11dd..f54392ec4fab 100644
--- a/drivers/gpu/drm/kmb/kmb_drv.c
+++ b/drivers/gpu/drm/kmb/kmb_drv.c
@@ -203,6 +203,7 @@ static irqreturn_t handle_lcd_irq(struct drm_device *dev)
 	unsigned long status, val, val1;
 	int plane_id, dma0_state, dma1_state;
 	struct kmb_drm_private *kmb = to_kmb(dev);
+	u32 ctrl = 0;
 
 	status = kmb_read_lcd(kmb, LCD_INT_STATUS);
 
@@ -227,6 +228,19 @@ static irqreturn_t handle_lcd_irq(struct drm_device *dev)
 				kmb_clr_bitmask_lcd(kmb, LCD_CONTROL,
 						    kmb->plane_status[plane_id].ctrl);
 
+				ctrl = kmb_read_lcd(kmb, LCD_CONTROL);
+				if (!(ctrl & (LCD_CTRL_VL1_ENABLE |
+				    LCD_CTRL_VL2_ENABLE |
+				    LCD_CTRL_GL1_ENABLE |
+				    LCD_CTRL_GL2_ENABLE))) {
+					/* If no LCD layers are using DMA,
+					 * then disable DMA pipelined AXI read
+					 * transactions.
+					 */
+					kmb_clr_bitmask_lcd(kmb, LCD_CONTROL,
+							    LCD_CTRL_PIPELINE_DMA);
+				}
+
 				kmb->plane_status[plane_id].disable = false;
 			}
 		}
@@ -411,10 +425,10 @@ static const struct drm_driver kmb_driver = {
 	.fops = &fops,
 	DRM_GEM_CMA_DRIVER_OPS_VMAP,
 	.name = "kmb-drm",
-	.desc = "KEEMBAY DISPLAY DRIVER ",
-	.date = "20201008",
-	.major = 1,
-	.minor = 0,
+	.desc = "KEEMBAY DISPLAY DRIVER",
+	.date = DRIVER_DATE,
+	.major = DRIVER_MAJOR,
+	.minor = DRIVER_MINOR,
 };
 
 static int kmb_remove(struct platform_device *pdev)
diff --git a/drivers/gpu/drm/kmb/kmb_drv.h b/drivers/gpu/drm/kmb/kmb_drv.h
index 02e806712a64..ebbaa5f422d5 100644
--- a/drivers/gpu/drm/kmb/kmb_drv.h
+++ b/drivers/gpu/drm/kmb/kmb_drv.h
@@ -15,6 +15,11 @@
 #define KMB_MAX_HEIGHT			1080 /*Max height in pixels */
 #define KMB_MIN_WIDTH                   1920 /*Max width in pixels */
 #define KMB_MIN_HEIGHT                  1080 /*Max height in pixels */
+
+#define DRIVER_DATE			"20210223"
+#define DRIVER_MAJOR			1
+#define DRIVER_MINOR			1
+
 #define KMB_LCD_DEFAULT_CLK		200000000
 #define KMB_SYS_CLK_MHZ			500
 
diff --git a/drivers/gpu/drm/kmb/kmb_plane.c b/drivers/gpu/drm/kmb/kmb_plane.c
index d5b6195856d1..ecee6782612d 100644
--- a/drivers/gpu/drm/kmb/kmb_plane.c
+++ b/drivers/gpu/drm/kmb/kmb_plane.c
@@ -427,8 +427,14 @@ static void kmb_plane_atomic_update(struct drm_plane *plane,
 
 	kmb_set_bitmask_lcd(kmb, LCD_CONTROL, ctrl);
 
-	/* FIXME no doc on how to set output format,these values are
-	 * taken from the Myriadx tests
+	/* Enable pipeline AXI read transactions for the DMA
+	 * after setting graphics layers. This must be done
+	 * in a separate write cycle.
+	 */
+	kmb_set_bitmask_lcd(kmb, LCD_CONTROL, LCD_CTRL_PIPELINE_DMA);
+
+	/* FIXME no doc on how to set output format, these values are taken
+	 * from the Myriadx tests
 	 */
 	out_format |= LCD_OUTF_FORMAT_RGB888;
 
@@ -526,6 +532,11 @@ struct kmb_plane *kmb_plane_init(struct drm_device *drm)
 		plane->id = i;
 	}
 
+	/* Disable pipeline AXI read transactions for the DMA
+	 * prior to setting graphics layers
+	 */
+	kmb_clr_bitmask_lcd(kmb, LCD_CONTROL, LCD_CTRL_PIPELINE_DMA);
+
 	return primary;
 cleanup:
 	drmm_kfree(drm, plane);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index d1cef3b69e9d..5652d982b1ce 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -492,7 +492,7 @@ struct vmw_private {
 	resource_size_t vram_start;
 	resource_size_t vram_size;
 	resource_size_t prim_bb_mem;
-	void __iomem *rmmio;
+	u32 __iomem *rmmio;
 	u32 *fifo_mem;
 	resource_size_t fifo_mem_size;
 	uint32_t fb_max_width;