FROMLIST: media: iris: Add handling for corrupt and drop frames

Firmware attach DATACORRUPT/DROP buffer flags for the frames which
needs to be dropped, handle it by setting VB2_BUF_STATE_ERROR for these
buffers before calling buf_done.

Link: https://lore.kernel.org/linux-arm-msm/20250509-video-iris-hevc-vp9-v5-17-59b4ff7d331c@quicinc.com/
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Acked-by: Vikash Garodia <quic_vgarodia@quicinc.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-HDK
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-HDK
Tested-by: Vikash Garodia <quic_vgarodia@quicinc.com> # on sa8775p-ride
Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com>

Author: Dikshita Agarwal

drivers/media/platform/qcom/iris/iris_buffer.c

@@ -611,10 +611,13 @@ int iris_vb2_buffer_done(struct iris_inst *inst, struct iris_buffer *buf)
 
 	vb2 = &vbuf->vb2_buf;
 
-	if (buf->flags & V4L2_BUF_FLAG_ERROR)
+	if (buf->flags & V4L2_BUF_FLAG_ERROR) {
 		state = VB2_BUF_STATE_ERROR;
-	else
-		state = VB2_BUF_STATE_DONE;
+		vb2_set_plane_payload(vb2, 0, 0);
+		vb2->timestamp = 0;
+		v4l2_m2m_buf_done(vbuf, state);
+		return 0;
+	}
 
 	vbuf->flags |= buf->flags;
 
@@ -634,6 +637,8 @@ int iris_vb2_buffer_done(struct iris_inst *inst, struct iris_buffer *buf)
 			v4l2_m2m_mark_stopped(m2m_ctx);
 		}
 	}
+
+	state = VB2_BUF_STATE_DONE;
 	vb2->timestamp = buf->timestamp;
 	v4l2_m2m_buf_done(vbuf, state);
 

drivers/media/platform/qcom/iris/iris_hfi_gen1_defines.h

@@ -116,6 +116,8 @@
 #define HFI_FRAME_NOTCODED				0x7f002000
 #define HFI_FRAME_YUV					0x7f004000
 #define HFI_UNUSED_PICT					0x10000000
+#define HFI_BUFFERFLAG_DATACORRUPT			0x00000008
+#define HFI_BUFFERFLAG_DROP_FRAME			0x20000000
 
 struct hfi_pkt_hdr {
 	u32 size;

drivers/media/platform/qcom/iris/iris_hfi_gen1_response.c

@@ -483,6 +483,12 @@ static void iris_hfi_gen1_session_ftb_done(struct iris_inst *inst, void *packet)
 	buf->attr |= BUF_ATTR_DEQUEUED;
 	buf->attr |= BUF_ATTR_BUFFER_DONE;
 
+	if (hfi_flags & HFI_BUFFERFLAG_DATACORRUPT)
+		flags |= V4L2_BUF_FLAG_ERROR;
+
+	if (hfi_flags & HFI_BUFFERFLAG_DROP_FRAME)
+		flags |= V4L2_BUF_FLAG_ERROR;
+
 	buf->flags |= flags;
 
 	iris_vb2_buffer_done(inst, buf);