mirror of https://gitee.com/openkylin/linux.git
400 lines
9.9 KiB
C
400 lines
9.9 KiB
C
/* cx25840 VBI functions
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
|
|
#include <linux/videodev2.h>
|
|
#include <linux/i2c.h>
|
|
#include <media/v4l2-common.h>
|
|
#include <media/cx25840.h>
|
|
|
|
#include "cx25840-core.h"
|
|
|
|
static int odd_parity(u8 c)
|
|
{
|
|
c ^= (c >> 4);
|
|
c ^= (c >> 2);
|
|
c ^= (c >> 1);
|
|
|
|
return c & 1;
|
|
}
|
|
|
|
static int decode_vps(u8 * dst, u8 * p)
|
|
{
|
|
static const u8 biphase_tbl[] = {
|
|
0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
|
|
0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
|
|
0xd2, 0x5a, 0x52, 0xd2, 0x96, 0x1e, 0x16, 0x96,
|
|
0x92, 0x1a, 0x12, 0x92, 0xd2, 0x5a, 0x52, 0xd2,
|
|
0xd0, 0x58, 0x50, 0xd0, 0x94, 0x1c, 0x14, 0x94,
|
|
0x90, 0x18, 0x10, 0x90, 0xd0, 0x58, 0x50, 0xd0,
|
|
0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
|
|
0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
|
|
0xe1, 0x69, 0x61, 0xe1, 0xa5, 0x2d, 0x25, 0xa5,
|
|
0xa1, 0x29, 0x21, 0xa1, 0xe1, 0x69, 0x61, 0xe1,
|
|
0xc3, 0x4b, 0x43, 0xc3, 0x87, 0x0f, 0x07, 0x87,
|
|
0x83, 0x0b, 0x03, 0x83, 0xc3, 0x4b, 0x43, 0xc3,
|
|
0xc1, 0x49, 0x41, 0xc1, 0x85, 0x0d, 0x05, 0x85,
|
|
0x81, 0x09, 0x01, 0x81, 0xc1, 0x49, 0x41, 0xc1,
|
|
0xe1, 0x69, 0x61, 0xe1, 0xa5, 0x2d, 0x25, 0xa5,
|
|
0xa1, 0x29, 0x21, 0xa1, 0xe1, 0x69, 0x61, 0xe1,
|
|
0xe0, 0x68, 0x60, 0xe0, 0xa4, 0x2c, 0x24, 0xa4,
|
|
0xa0, 0x28, 0x20, 0xa0, 0xe0, 0x68, 0x60, 0xe0,
|
|
0xc2, 0x4a, 0x42, 0xc2, 0x86, 0x0e, 0x06, 0x86,
|
|
0x82, 0x0a, 0x02, 0x82, 0xc2, 0x4a, 0x42, 0xc2,
|
|
0xc0, 0x48, 0x40, 0xc0, 0x84, 0x0c, 0x04, 0x84,
|
|
0x80, 0x08, 0x00, 0x80, 0xc0, 0x48, 0x40, 0xc0,
|
|
0xe0, 0x68, 0x60, 0xe0, 0xa4, 0x2c, 0x24, 0xa4,
|
|
0xa0, 0x28, 0x20, 0xa0, 0xe0, 0x68, 0x60, 0xe0,
|
|
0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
|
|
0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
|
|
0xd2, 0x5a, 0x52, 0xd2, 0x96, 0x1e, 0x16, 0x96,
|
|
0x92, 0x1a, 0x12, 0x92, 0xd2, 0x5a, 0x52, 0xd2,
|
|
0xd0, 0x58, 0x50, 0xd0, 0x94, 0x1c, 0x14, 0x94,
|
|
0x90, 0x18, 0x10, 0x90, 0xd0, 0x58, 0x50, 0xd0,
|
|
0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
|
|
0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
|
|
};
|
|
|
|
u8 c, err = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < 2 * 13; i += 2) {
|
|
err |= biphase_tbl[p[i]] | biphase_tbl[p[i + 1]];
|
|
c = (biphase_tbl[p[i + 1]] & 0xf) |
|
|
((biphase_tbl[p[i]] & 0xf) << 4);
|
|
dst[i / 2] = c;
|
|
}
|
|
|
|
return err & 0xf0;
|
|
}
|
|
|
|
void cx25840_vbi_setup(struct i2c_client *client)
|
|
{
|
|
struct cx25840_state *state = i2c_get_clientdata(client);
|
|
v4l2_std_id std = cx25840_get_v4lstd(client);
|
|
int hblank,hactive,burst,vblank,vactive,sc,vblank656,src_decimation;
|
|
int luma_lpf,uv_lpf, comb;
|
|
u32 pll_int,pll_frac,pll_post;
|
|
|
|
/* datasheet startup, step 8d */
|
|
if (std & ~V4L2_STD_NTSC) {
|
|
cx25840_write(client, 0x49f, 0x11);
|
|
} else {
|
|
cx25840_write(client, 0x49f, 0x14);
|
|
}
|
|
|
|
if (std & V4L2_STD_625_50) {
|
|
hblank=0x084;
|
|
hactive=0x2d0;
|
|
burst=0x5d;
|
|
vblank=0x024;
|
|
vactive=0x244;
|
|
vblank656=0x28;
|
|
src_decimation=0x21f;
|
|
|
|
luma_lpf=2;
|
|
if (std & V4L2_STD_SECAM) {
|
|
uv_lpf=0;
|
|
comb=0;
|
|
sc=0x0a425f;
|
|
} else {
|
|
uv_lpf=1;
|
|
comb=0x20;
|
|
sc=0x0a8263;
|
|
}
|
|
} else {
|
|
hactive=720;
|
|
hblank=122;
|
|
vactive=487;
|
|
luma_lpf=1;
|
|
uv_lpf=1;
|
|
|
|
src_decimation=0x21f;
|
|
if (std == V4L2_STD_PAL_M) {
|
|
vblank=20;
|
|
vblank656=24;
|
|
burst=0x61;
|
|
comb=0x20;
|
|
|
|
sc=555452;
|
|
} else {
|
|
vblank=26;
|
|
vblank656=26;
|
|
burst=0x5b;
|
|
comb=0x66;
|
|
sc=556063;
|
|
}
|
|
}
|
|
|
|
/* DEBUG: Displays configured PLL frequency */
|
|
pll_int=cx25840_read(client, 0x108);
|
|
pll_frac=cx25840_read4(client, 0x10c)&0x1ffffff;
|
|
pll_post=cx25840_read(client, 0x109);
|
|
v4l_dbg(1, cx25840_debug, client,
|
|
"PLL regs = int: %u, frac: %u, post: %u\n",
|
|
pll_int,pll_frac,pll_post);
|
|
|
|
if (pll_post) {
|
|
int fin, fsc;
|
|
int pll= (28636363L*((((u64)pll_int)<<25L)+pll_frac)) >>25L;
|
|
|
|
pll/=pll_post;
|
|
v4l_dbg(1, cx25840_debug, client, "PLL = %d.%06d MHz\n",
|
|
pll/1000000, pll%1000000);
|
|
v4l_dbg(1, cx25840_debug, client, "PLL/8 = %d.%06d MHz\n",
|
|
pll/8000000, (pll/8)%1000000);
|
|
|
|
fin=((u64)src_decimation*pll)>>12;
|
|
v4l_dbg(1, cx25840_debug, client, "ADC Sampling freq = "
|
|
"%d.%06d MHz\n",
|
|
fin/1000000,fin%1000000);
|
|
|
|
fsc= (((u64)sc)*pll) >> 24L;
|
|
v4l_dbg(1, cx25840_debug, client, "Chroma sub-carrier freq = "
|
|
"%d.%06d MHz\n",
|
|
fsc/1000000,fsc%1000000);
|
|
|
|
v4l_dbg(1, cx25840_debug, client, "hblank %i, hactive %i, "
|
|
"vblank %i , vactive %i, vblank656 %i, src_dec %i,"
|
|
"burst 0x%02x, luma_lpf %i, uv_lpf %i, comb 0x%02x,"
|
|
" sc 0x%06x\n",
|
|
hblank, hactive, vblank, vactive, vblank656,
|
|
src_decimation, burst, luma_lpf, uv_lpf, comb, sc);
|
|
}
|
|
|
|
/* Sets horizontal blanking delay and active lines */
|
|
cx25840_write(client, 0x470, hblank);
|
|
cx25840_write(client, 0x471, 0xff&(((hblank>>8)&0x3)|(hactive <<4)));
|
|
cx25840_write(client, 0x472, hactive>>4);
|
|
|
|
/* Sets burst gate delay */
|
|
cx25840_write(client, 0x473, burst);
|
|
|
|
/* Sets vertical blanking delay and active duration */
|
|
cx25840_write(client, 0x474, vblank);
|
|
cx25840_write(client, 0x475, 0xff&(((vblank>>8)&0x3)|(vactive <<4)));
|
|
cx25840_write(client, 0x476, vactive>>4);
|
|
cx25840_write(client, 0x477, vblank656);
|
|
|
|
/* Sets src decimation rate */
|
|
cx25840_write(client, 0x478, 0xff&src_decimation);
|
|
cx25840_write(client, 0x479, 0xff&(src_decimation>>8));
|
|
|
|
/* Sets Luma and UV Low pass filters */
|
|
cx25840_write(client, 0x47a, luma_lpf<<6|((uv_lpf<<4)&0x30));
|
|
|
|
/* Enables comb filters */
|
|
cx25840_write(client, 0x47b, comb);
|
|
|
|
/* Sets SC Step*/
|
|
cx25840_write(client, 0x47c, sc);
|
|
cx25840_write(client, 0x47d, 0xff&sc>>8);
|
|
cx25840_write(client, 0x47e, 0xff&sc>>16);
|
|
|
|
/* Sets VBI parameters */
|
|
if (std & V4L2_STD_625_50) {
|
|
cx25840_write(client, 0x47f, 0x01);
|
|
state->vbi_line_offset = 5;
|
|
} else {
|
|
cx25840_write(client, 0x47f, 0x00);
|
|
state->vbi_line_offset = 8;
|
|
}
|
|
}
|
|
|
|
int cx25840_vbi(struct i2c_client *client, unsigned int cmd, void *arg)
|
|
{
|
|
struct cx25840_state *state = i2c_get_clientdata(client);
|
|
struct v4l2_format *fmt;
|
|
struct v4l2_sliced_vbi_format *svbi;
|
|
|
|
switch (cmd) {
|
|
case VIDIOC_G_FMT:
|
|
{
|
|
static u16 lcr2vbi[] = {
|
|
0, V4L2_SLICED_TELETEXT_B, 0, /* 1 */
|
|
0, V4L2_SLICED_WSS_625, 0, /* 4 */
|
|
V4L2_SLICED_CAPTION_525, /* 6 */
|
|
0, 0, V4L2_SLICED_VPS, 0, 0, /* 9 */
|
|
0, 0, 0, 0
|
|
};
|
|
int i;
|
|
|
|
fmt = arg;
|
|
if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
|
|
return -EINVAL;
|
|
svbi = &fmt->fmt.sliced;
|
|
memset(svbi, 0, sizeof(*svbi));
|
|
/* we're done if raw VBI is active */
|
|
if ((cx25840_read(client, 0x404) & 0x10) == 0)
|
|
break;
|
|
|
|
for (i = 7; i <= 23; i++) {
|
|
u8 v = cx25840_read(client, 0x424 + i - 7);
|
|
|
|
svbi->service_lines[0][i] = lcr2vbi[v >> 4];
|
|
svbi->service_lines[1][i] = lcr2vbi[v & 0xf];
|
|
svbi->service_set |=
|
|
svbi->service_lines[0][i] | svbi->service_lines[1][i];
|
|
}
|
|
break;
|
|
}
|
|
|
|
case VIDIOC_S_FMT:
|
|
{
|
|
int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_525_60);
|
|
int vbi_offset = is_pal ? 1 : 0;
|
|
int i, x;
|
|
u8 lcr[24];
|
|
|
|
fmt = arg;
|
|
if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
|
|
return -EINVAL;
|
|
svbi = &fmt->fmt.sliced;
|
|
if (svbi->service_set == 0) {
|
|
/* raw VBI */
|
|
memset(svbi, 0, sizeof(*svbi));
|
|
|
|
/* Setup VBI */
|
|
cx25840_vbi_setup(client);
|
|
|
|
/* VBI Offset */
|
|
cx25840_write(client, 0x47f, vbi_offset);
|
|
cx25840_write(client, 0x404, 0x2e);
|
|
break;
|
|
}
|
|
|
|
for (x = 0; x <= 23; x++)
|
|
lcr[x] = 0x00;
|
|
|
|
/* Setup VBI */
|
|
cx25840_vbi_setup(client);
|
|
|
|
/* Sliced VBI */
|
|
cx25840_write(client, 0x404, 0x32); /* Ancillary data */
|
|
cx25840_write(client, 0x406, 0x13);
|
|
cx25840_write(client, 0x47f, vbi_offset);
|
|
|
|
if (is_pal) {
|
|
for (i = 0; i <= 6; i++)
|
|
svbi->service_lines[0][i] =
|
|
svbi->service_lines[1][i] = 0;
|
|
} else {
|
|
for (i = 0; i <= 9; i++)
|
|
svbi->service_lines[0][i] =
|
|
svbi->service_lines[1][i] = 0;
|
|
|
|
for (i = 22; i <= 23; i++)
|
|
svbi->service_lines[0][i] =
|
|
svbi->service_lines[1][i] = 0;
|
|
}
|
|
|
|
for (i = 7; i <= 23; i++) {
|
|
for (x = 0; x <= 1; x++) {
|
|
switch (svbi->service_lines[1-x][i]) {
|
|
case V4L2_SLICED_TELETEXT_B:
|
|
lcr[i] |= 1 << (4 * x);
|
|
break;
|
|
case V4L2_SLICED_WSS_625:
|
|
lcr[i] |= 4 << (4 * x);
|
|
break;
|
|
case V4L2_SLICED_CAPTION_525:
|
|
lcr[i] |= 6 << (4 * x);
|
|
break;
|
|
case V4L2_SLICED_VPS:
|
|
lcr[i] |= 9 << (4 * x);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (is_pal) {
|
|
for (x = 1, i = 0x424; i <= 0x434; i++, x++) {
|
|
cx25840_write(client, i, lcr[6 + x]);
|
|
}
|
|
}
|
|
else {
|
|
for (x = 1, i = 0x424; i <= 0x430; i++, x++) {
|
|
cx25840_write(client, i, lcr[9 + x]);
|
|
}
|
|
for (i = 0x431; i <= 0x434; i++) {
|
|
cx25840_write(client, i, 0);
|
|
}
|
|
}
|
|
|
|
cx25840_write(client, 0x43c, 0x16);
|
|
|
|
if (is_pal) {
|
|
cx25840_write(client, 0x474, 0x2a);
|
|
} else {
|
|
cx25840_write(client, 0x474, 0x22);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case VIDIOC_INT_DECODE_VBI_LINE:
|
|
{
|
|
struct v4l2_decode_vbi_line *vbi = arg;
|
|
u8 *p = vbi->p;
|
|
int id1, id2, l, err = 0;
|
|
|
|
if (p[0] || p[1] != 0xff || p[2] != 0xff ||
|
|
(p[3] != 0x55 && p[3] != 0x91)) {
|
|
vbi->line = vbi->type = 0;
|
|
break;
|
|
}
|
|
|
|
p += 4;
|
|
id1 = p[-1];
|
|
id2 = p[0] & 0xf;
|
|
l = p[2] & 0x3f;
|
|
l += state->vbi_line_offset;
|
|
p += 4;
|
|
|
|
switch (id2) {
|
|
case 1:
|
|
id2 = V4L2_SLICED_TELETEXT_B;
|
|
break;
|
|
case 4:
|
|
id2 = V4L2_SLICED_WSS_625;
|
|
break;
|
|
case 6:
|
|
id2 = V4L2_SLICED_CAPTION_525;
|
|
err = !odd_parity(p[0]) || !odd_parity(p[1]);
|
|
break;
|
|
case 9:
|
|
id2 = V4L2_SLICED_VPS;
|
|
if (decode_vps(p, p) != 0) {
|
|
err = 1;
|
|
}
|
|
break;
|
|
default:
|
|
id2 = 0;
|
|
err = 1;
|
|
break;
|
|
}
|
|
|
|
vbi->type = err ? 0 : id2;
|
|
vbi->line = err ? 0 : l;
|
|
vbi->is_second_field = err ? 0 : (id1 == 0x55);
|
|
vbi->p = p;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|