media: starfive: Update flush l2cache interface

Improve l2cache flush performance. And adjust ISP sc buffer size
in pixel format.

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

3 files changed, 18 insertions, 8 deletions

diff --git a/drivers/media/platform/starfive/v4l2_driver/stf_video.c b/drivers/media/platform/starfive/v4l2_driver/stf_video.c
index 603e9282d3eb..b6ef9899ae86 100644
--- a/drivers/media/platform/starfive/v4l2_driver/stf_video.c
+++ b/drivers/media/platform/starfive/v4l2_driver/stf_video.c
@@ -216,6 +216,11 @@ static int __video_try_fmt(struct stfcamss_video *video,
 				pix->height, fi->bpp[0]);
 		st_info(ST_VIDEO, "i = %d, s = 0x%x\n", i, pix->sizeimage);
 	}
+
+	if (stf_vin_map_isp_pad(video->id, STF_ISP_PAD_SRC)
+		== STF_ISP_PAD_SRC_SCD_Y)
+		pix->sizeimage = ISP_SCD_Y_BUFFER_SIZE;
+
 	return 0;
 }
 
@@ -285,11 +290,6 @@ static int video_queue_setup(struct vb2_queue *q,
 		if (!sizes[0])
 			st_err(ST_VIDEO, "%s: error size is zero!!!\n", __func__);
 	}
-	if ((stf_vin_map_isp_pad(video->id, STF_ISP_PAD_SRC)
-		== STF_ISP_PAD_SRC_SCD_Y) &&
-		sizes[0] < ISP_SCD_Y_BUFFER_SIZE) {
-		sizes[0] = ISP_SCD_Y_BUFFER_SIZE;
-	}
 
 	st_info(ST_VIDEO, "%s, planes = %d, size = %d\n",
 			__func__, *num_planes, sizes[0]);
diff --git a/drivers/media/platform/starfive/v4l2_driver/stf_vin.c b/drivers/media/platform/starfive/v4l2_driver/stf_vin.c
index 656096c94008..9cd0a5dc0296 100644
--- a/drivers/media/platform/starfive/v4l2_driver/stf_vin.c
+++ b/drivers/media/platform/starfive/v4l2_driver/stf_vin.c
@@ -362,7 +362,10 @@ static void vin_buf_l2cache_flush(struct vin_output *output)
 
 	if (!list_empty(&output->pending_bufs)) {
 		list_for_each_entry(buffer, &output->pending_bufs, queue) {
-			sifive_l2_flush64_range(buffer->addr[0], buffer->sizeimage);
+			if (buffer->sizeimage > STF_VIN_CRITICAL_CACHE_SIZE)
+				sifive_ccache_flush_entire();
+			else
+				sifive_l2_flush64_range(buffer->addr[0], buffer->sizeimage);
 		}
 	}
 }
@@ -1171,8 +1174,12 @@ static void vin_buffer_done(struct vin_line *line, struct vin_params *params)
 		 * which will not update cache by default.
 		 * Flush L2 cache to make sure data is updated.
 		 */
-		if (ready_buf->vb.vb2_buf.memory == VB2_MEMORY_MMAP)
-			sifive_l2_flush64_range(ready_buf->addr[0], ready_buf->sizeimage);
+		if (ready_buf->vb.vb2_buf.memory == VB2_MEMORY_MMAP) {
+			if (ready_buf->sizeimage > STF_VIN_CRITICAL_CACHE_SIZE)
+				sifive_ccache_flush_entire();
+			else
+				sifive_l2_flush64_range(ready_buf->addr[0], ready_buf->sizeimage);
+		}
 
 		vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
 	}
diff --git a/drivers/media/platform/starfive/v4l2_driver/stf_vin.h b/drivers/media/platform/starfive/v4l2_driver/stf_vin.h
index 6b331b738440..812e7a91ed9f 100644
--- a/drivers/media/platform/starfive/v4l2_driver/stf_vin.h
+++ b/drivers/media/platform/starfive/v4l2_driver/stf_vin.h
@@ -21,6 +21,8 @@
 #define STF_VIN_PAD_SRC    1
 #define STF_VIN_PADS_NUM   2
 
+#define STF_VIN_CRITICAL_CACHE_SIZE 0x80000
+
 struct vin2_format {
 	u32 code;
 	u8 bpp;
@@ -169,6 +171,7 @@ struct stf_vin2_dev {
 };
 
 extern void sifive_l2_flush64_range(unsigned long start, unsigned long len);
+extern void sifive_ccache_flush_entire(void);
 extern int stf_vin_subdev_init(struct stfcamss *stfcamss);
 extern int stf_vin_register(struct stf_vin2_dev *vin_dev,
 		struct v4l2_device *v4l2_dev);