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cvbsout: fix cgms bit mistake for NTSC [1/1]

Browse Source 
PD#OTT-5683

Problem:
NTSC cgms data bit is incorrect

Solution:
fix cgms bit mistake

Verify:
u212

Change-Id: If1d26714eeed9061773c25871715713b122d9980
Signed-off-by: Evoke Zhang <evoke.zhang@amlogic.com>
This commit is contained in:
Evoke Zhang
2019-10-09 10:52:38 +08:00
committed by Luan Yuan
parent fa60ca407e
commit f3af1e8108
2 changed files with 11 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/amlogic/media/vout/cvbs/wss.c
View File

@@ -35,6 +35,7 @@ static const char * const wss_480i_cmd[] = {"ar", "cgms", "psp",
"prerec", "CC", "off"};
static const char * const wss_576i_cmd[] = {"ar", "mode", "coding", "helper",
"ttxsubt", "opensubt", "surrsnd", "cgms", "full", "CC", "off"};
static unsigned int cgms_ntsc_crc[] = {0x0, 0x5, 0xa, 0xf};
static void wss_set_output(unsigned int cmd, unsigned int mode,
unsigned int line, unsigned int data,
@@ -60,15 +61,14 @@ static void wss_set_output(unsigned int cmd, unsigned int mode,
cvbs_out_reg_setb(ENCI_VBI_SETTING, 0x1, 0, 2);
break;
case WSS_480I_CMD_CGMS_A:
value = cvbs_out_reg_read(ENCI_VBI_CGMSDT_L);
value |= (cvbs_out_reg_read(ENCI_VBI_CGMSDT_H) << 16);
value = ((value & (~(((1L << length) - 1) << start))) |
((data & ((1L << length) - 1)) << start));
data = (data > 3) ? 0 : data;
value = ((data << start) | (cgms_ntsc_crc[data] << 14));
cvbs_out_reg_write(ENCI_VBI_CGMSDT_L, (value & 0xffff));
cvbs_out_reg_write(ENCI_VBI_CGMSDT_H, ((value >> 16) & 0xff));
cvbs_out_reg_write(ENCI_VBI_CGMS_LN, (line - 4));
/* bit[7:0] even, bit[15:8] odd */
cvbs_out_reg_write(ENCI_VBI_CGMS_LN,
((line - 4) | (line - 3) << 8));
cvbs_out_reg_setb(ENCI_VBI_SETTING, 0x3, 4, 2);
/*480i, enable even field for line 20*/
/*enable odd field for line 283 */
@@ -94,7 +94,10 @@ static void wss_set_output(unsigned int cmd, unsigned int mode,
static void wss_close_output(unsigned int mode)
{
pr_info("[%s] close mode = %d\n", __func__, mode);
cvbs_out_reg_setb(ENCI_VBI_SETTING, 0x0, 2, 2);
if (mode == 480)
cvbs_out_reg_setb(ENCI_VBI_SETTING, 0x0, 2, 4);
else
cvbs_out_reg_setb(ENCI_VBI_SETTING, 0x0, 2, 2);
}
/* for 576i, according to <ETSI EN 300294 V1.4.1> */

2
drivers/amlogic/media/vout/cvbs/wss.h
View File

@@ -98,7 +98,7 @@
#define WSS_480I_AR_BITS_169 0x2
#define WSS_480I_AR_BITS_RESERVED 0x3
#define WSS_480I_CGMS_A_START 0x7
#define WSS_480I_CGMS_A_START 0x6
#define WSS_480I_CGMS_A_LENGTH 0x2
#define WSS_480I_CGMS_A_MASK 0x3
#define WSS_480I_CGMS_A_PERMITTED 0x0