drm: buffer flush l2cache

Signed-off-by: changhuang.liang <changhuang.liang@starfivetech.com>

3 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/drm/starfive/starfive_drm_crtc.h b/drivers/gpu/drm/starfive/starfive_drm_crtc.h
index ab81cae24e48..f4810766d1ff 100755
--- a/drivers/gpu/drm/starfive/starfive_drm_crtc.h
+++ b/drivers/gpu/drm/starfive/starfive_drm_crtc.h
@@ -79,6 +79,7 @@ struct starfive_crtc {
 	int			encoder_type;
 	dma_addr_t	dma_addr;
 	bool		dma_addr_change;
+	size_t		size;
 };
 #define to_starfive_crtc(x) container_of(x, struct starfive_crtc, crtc)
 
diff --git a/drivers/gpu/drm/starfive/starfive_drm_plane.c b/drivers/gpu/drm/starfive/starfive_drm_plane.c
index b146d4716a97..864ca67edd88 100755
--- a/drivers/gpu/drm/starfive/starfive_drm_plane.c
+++ b/drivers/gpu/drm/starfive/starfive_drm_plane.c
@@ -123,6 +123,7 @@ static void starfive_plane_atomic_update(struct drm_plane *plane,
 	} else
 		sf_crtc->dma_addr_change = false;
 
+	sf_crtc->size = obj->size;
 }
 
 static int starfive_plane_atomic_async_check(struct drm_plane *plane,
diff --git a/drivers/gpu/drm/starfive/starfive_drm_vpp.c b/drivers/gpu/drm/starfive/starfive_drm_vpp.c
index 5ecdd5e73662..4b6c6b88ba44 100755
--- a/drivers/gpu/drm/starfive/starfive_drm_vpp.c
+++ b/drivers/gpu/drm/starfive/starfive_drm_vpp.c
@@ -9,7 +9,7 @@
 #include <video/starfive_fb.h>
 #include "starfive_drm_vpp.h"
 #include "starfive_drm_crtc.h"
-
+#include <soc/sifive/sifive_l2_cache.h>
 
 //#define SF_PP_DEBUG	1
 #ifdef SF_PP_DEBUG
@@ -588,6 +588,7 @@ irqreturn_t vpp1_isr_handler(int this_irq, void *dev_id)
 
 	intr_status = sf_fb_vppread32(sf_crtc, 1, PP_INT_STATUS);
 	sf_fb_vppwrite32(sf_crtc, 1, PP_INT_CLR, 0xf);
+	sifive_l2_flush64_range(sf_crtc->dma_addr, sf_crtc->size);
 
 	return IRQ_HANDLED;
 }