di: fix wire drawing issue caused by pendulum clock stuck [1/1]

PD#SWPL-7650

Problem:
TL1 have drawing.

Solution:
fine-tuning GMV

Verify:
TL1

Change-Id: Ie50207969a2d7511882552b0adc8baef083300ff
Signed-off-by: Wenfeng Guo <wenfeng.guo@amlogic.com>

drivers/amlogic/media/deinterlace/deinterlace_mtn.c

@@ -647,6 +647,11 @@ void fix_tl1_1080i_sawtooth_patch(void)
 	DI_Wr(0x17af, 0x60020a60);
 }
 
+static int combing_cnt;
+int combing_diff_min = 2000;
+int combing_diff_max = 2000;
+int combing_cnt_thd = 10;
+
 int adaptive_combing_fixing(
 	struct combing_status_s *cmb_status,
 	unsigned int field_diff,
@@ -701,6 +706,13 @@ int adaptive_combing_fixing(
 	glb_mot[2] = glb_mot[1];
 	glb_mot[1] = glb_mot[0];
 	glb_mot[0] = frame_diff;
+	if (glb_mot[0] < combing_diff_min)
+		combing_cnt = combing_cnt + 1;
+	else
+		combing_cnt = 0;
+	if (glb_mot[0] < combing_diff_min && glb_mot[1] > combing_diff_max &&
+		combing_cnt <= combing_cnt_thd)
+		glb_mot[0] = glb_mot[1];
 	glb_mot_avg5 =
 		(glb_mot[0] + glb_mot[1] + glb_mot[2] + glb_mot[3] +
 		 glb_mot[4]) / 5;