drm_vpu: logo memory manage in drm_vpu

PD#160546: drm_vpu: logo memory manage in drm_vpu

Change-Id: I590caf78301f09f71dc005559a79656e8ff9c206
Signed-off-by: pengcheng chen <pengcheng.chen@amlogic.com>

2 files changed, 54 insertions, 1 deletions

diff --git a/arch/arm64/boot/dts/amlogic/g12a_s905d2_u200_drm_buildroot.dts b/arch/arm64/boot/dts/amlogic/g12a_s905d2_u200_drm_buildroot.dts
index 0896a5c..eeedb01 100644
--- a/arch/arm64/boot/dts/amlogic/g12a_s905d2_u200_drm_buildroot.dts
+++ b/arch/arm64/boot/dts/amlogic/g12a_s905d2_u200_drm_buildroot.dts
@@ -793,6 +793,7 @@
 
 &drm_vpu {
 	status = "okay";
+	logo_addr = "0x7f800000";
 };
 
 &drm_amhdmitx {
diff --git a/drivers/amlogic/drm/am_meson_vpu.c b/drivers/amlogic/drm/am_meson_vpu.c
index 04a3981..41244d0 100644
--- a/drivers/amlogic/drm/am_meson_vpu.c
+++ b/drivers/amlogic/drm/am_meson_vpu.c
@@ -25,6 +25,9 @@
 #include <linux/of_device.h>
 #include <linux/of.h>
 #include <linux/component.h>
+#include <linux/of_reserved_mem.h>
+#include <linux/dma-contiguous.h>
+#include <linux/cma.h>
 #ifdef CONFIG_DRM_MESON_USE_ION
 #include <ion/ion_priv.h>
 #endif
@@ -214,6 +217,10 @@ static struct osd_device_data_s osd_g12a = {
 };
 
 static struct osd_device_data_s osd_meson_dev;
+static u32 logo_memsize;
+static struct page *logo_page;
+static struct delayed_work osd_dwork;
+static struct platform_device *gp_dev;
 
 int am_meson_crtc_dts_info_set(const void *dt_match_data)
 {
@@ -671,6 +678,20 @@ static irqreturn_t am_meson_vpu_irq(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
+static void mem_free_work(struct work_struct *work)
+{
+	if (logo_memsize > 0) {
+#ifdef CONFIG_CMA
+		pr_info("%s, free memory: addr:0x%x\n",
+			__func__, logo_memsize);
+
+		dma_release_from_contiguous(&(gp_dev->dev),
+			logo_page,
+			logo_memsize >> PAGE_SHIFT);
+#endif
+	}
+}
+
 static int am_meson_vpu_bind(struct device *dev,
 				struct device *master, void *data)
 {
@@ -678,7 +699,9 @@ static int am_meson_vpu_bind(struct device *dev,
 	struct drm_device *drm_dev = data;
 	struct meson_drm *private = drm_dev->dev_private;
 	struct am_meson_crtc *amcrtc;
-
+#ifdef CONFIG_CMA
+	struct cma *cma;
+#endif
 	int ret, irq;
 
 	/* Allocate crtc struct */
@@ -708,6 +731,33 @@ static int am_meson_vpu_bind(struct device *dev,
 	/* IRQ is initially disabled; it gets enabled in crtc_enable */
 	disable_irq(amcrtc->irq);
 
+	/* init reserved memory */
+	ret = of_reserved_mem_device_init(&pdev->dev);
+	if (ret != 0)
+		dev_err(dev, "failed to init reserved memory\n");
+	else {
+#ifdef CONFIG_CMA
+		gp_dev = pdev;
+		cma = dev_get_cma_area(&pdev->dev);
+		if (cma) {
+			logo_memsize = cma_get_size(cma);
+			pr_info("reserved memory base:0x%llx, size:0x%x\n",
+				cma_get_base(cma), logo_memsize);
+			if (logo_memsize > 0) {
+				logo_page = dma_alloc_from_contiguous(
+					&pdev->dev,
+					logo_memsize >> PAGE_SHIFT,
+					0);
+				if (!logo_page) {
+					pr_err("allocate buffer failed:%d\n",
+						logo_memsize);
+				}
+			}
+		} else
+			pr_info("------ NO CMA\n");
+#endif
+	}
+
 	ret = am_meson_plane_create(private);
 	if (ret)
 		return ret;
@@ -717,6 +767,8 @@ static int am_meson_vpu_bind(struct device *dev,
 		return ret;
 
 	am_meson_register_crtc_funcs(private->crtc, &meson_private_crtc_funcs);
+	INIT_DELAYED_WORK(&osd_dwork, mem_free_work);
+	schedule_delayed_work(&osd_dwork, msecs_to_jiffies(60 * 1000));
 
 	return 0;
 }