media: camss: vfe: Format conversion support using PIX interface

Use VFE PIX input interface and do format conversion in VFE.

Supported input format is UYVY (single plane YUV 4:2:2) and
its different sample order variations.

Supported output formats are:
- NV12/NV21 (two plane YUV 4:2:0)
- NV16/NV61 (two plane YUV 4:2:2)
Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/qcom/camss-8x16/camss-ispif.c

@@ -1003,6 +1003,8 @@ static enum ispif_intf ispif_get_intf(enum vfe_line_id line_id)
 		return RDI1;
 	case (VFE_LINE_RDI2):
 		return RDI2;
+	case (VFE_LINE_PIX):
+		return PIX0;
 	default:
 		return RDI0;
 	}

drivers/media/platform/qcom/camss-8x16/camss-vfe.h

@@ -30,8 +30,9 @@
 #define MSM_VFE_PAD_SRC 1
 #define MSM_VFE_PADS_NUM 2
 
-#define MSM_VFE_LINE_NUM 3
+#define MSM_VFE_LINE_NUM 4
 #define MSM_VFE_IMAGE_MASTERS_NUM 7
+#define MSM_VFE_COMPOSITE_IRQ_NUM 4
 
 #define MSM_VFE_VFE0_UB_SIZE 1023
 #define MSM_VFE_VFE0_UB_SIZE_RDI (MSM_VFE_VFE0_UB_SIZE / 3)
@@ -51,11 +52,13 @@ enum vfe_line_id {
 	VFE_LINE_NONE = -1,
 	VFE_LINE_RDI0 = 0,
 	VFE_LINE_RDI1 = 1,
-	VFE_LINE_RDI2 = 2
+	VFE_LINE_RDI2 = 2,
+	VFE_LINE_PIX = 3
 };
 
 struct vfe_output {
-	u8 wm_idx;
+	u8 wm_num;
+	u8 wm_idx[3];
 
 	int active_buf;
 	struct camss_buffer *buf[2];
@@ -66,6 +69,10 @@ struct vfe_output {
 
 	enum vfe_output_state state;
 	unsigned int sequence;
+	int wait_sof;
+	int wait_reg_update;
+	struct completion sof;
+	struct completion reg_update;
 };
 
 struct vfe_line {

drivers/media/platform/qcom/camss-8x16/camss-video.h

@@ -29,7 +29,7 @@
 
 struct camss_buffer {
 	struct vb2_v4l2_buffer vb;
-	dma_addr_t addr;
+	dma_addr_t addr[3];
 	struct list_head queue;
 };
 
@@ -41,6 +41,8 @@ struct camss_video_ops {
 			     enum vb2_buffer_state state);
 };
 
+struct camss_format_info;
+
 struct camss_video {
 	struct camss *camss;
 	struct vb2_queue vb2_q;
@@ -52,12 +54,14 @@ struct camss_video {
 	const struct camss_video_ops *ops;
 	struct mutex lock;
 	struct mutex q_lock;
+	const struct camss_format_info *formats;
+	unsigned int nformats;
 };
 
 void msm_video_stop_streaming(struct camss_video *video);
 
 int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
-		       const char *name);
+		       const char *name, int is_pix);
 
 void msm_video_unregister(struct camss_video *video);