[media] s5p-mfc: Skip incomplete frame

Currently, when incomplete frame is received in the middle of
decoding, driver treats it as an error, so src/dst queue and
clock are cleaned. Although it is obviously error case, it is
needed to maintain video decoding in case of necessity. This
patch supports skip incomplete frame to next.

Signed-off-by: Donghwa Lee <[e-mail]>
Signed-off-by: Seung-Woo Kim <[e-mail]>
Signed-off-by: Marek Szyprowski <[e-mail]>
Signed-off-by: Sylwester Nawrocki <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/s5p-mfc/regs-mfc.h

···
 #define S5P_FIMV_REG_CLEAR_COUNT		0
 
 /* Error handling defines */
+#define S5P_FIMV_ERR_NO_VALID_SEQ_HDR		67
+#define S5P_FIMV_ERR_INCOMPLETE_FRAME		124
+#define S5P_FIMV_ERR_TIMEOUT			140
 #define S5P_FIMV_ERR_WARNINGS_START		145
 #define S5P_FIMV_ERR_DEC_MASK			0xFFFF
 #define S5P_FIMV_ERR_DEC_SHIFT			0

drivers/media/platform/s5p-mfc/s5p_mfc.c

···
 	case S5P_MFC_R2H_CMD_ERR_RET:
 		/* An error has occurred */
 		if (ctx->state == MFCINST_RUNNING &&
-			s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) >=
-				dev->warn_start)
+			(s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) >=
+				dev->warn_start ||
+				err == S5P_FIMV_ERR_NO_VALID_SEQ_HDR ||
+				err == S5P_FIMV_ERR_INCOMPLETE_FRAME ||
+				err == S5P_FIMV_ERR_TIMEOUT))
 			s5p_mfc_handle_frame(ctx, reason, err);
 		else
 			s5p_mfc_handle_error(dev, ctx, reason, err);