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Diffstat (limited to 'drivers/media/video/cx18/cx18-av-vbi.c')
-rw-r--r--drivers/media/video/cx18/cx18-av-vbi.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/drivers/media/video/cx18/cx18-av-vbi.c b/drivers/media/video/cx18/cx18-av-vbi.c
deleted file mode 100644
index baa36fbcd4d4..000000000000
--- a/drivers/media/video/cx18/cx18-av-vbi.c
+++ /dev/null
@@ -1,311 +0,0 @@
-/*
- * cx18 ADEC VBI functions
- *
- * Derived from cx25840-vbi.c
- *
- * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
- *
- * 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 "cx18-driver.h"
-
-/*
- * For sliced VBI output, we set up to use VIP-1.1, 8-bit mode,
- * NN counts 1 byte Dwords, an IDID with the VBI line # in it.
- * Thus, according to the VIP-2 Spec, our VBI ancillary data lines
- * (should!) look like:
- * 4 byte EAV code: 0xff 0x00 0x00 0xRP
- * unknown number of possible idle bytes
- * 3 byte Anc data preamble: 0x00 0xff 0xff
- * 1 byte data identifier: ne010iii (parity bits, 010, DID bits)
- * 1 byte secondary data id: nessssss (parity bits, SDID bits)
- * 1 byte data word count: necccccc (parity bits, NN Dword count)
- * 2 byte Internal DID: VBI-line-# 0x80
- * NN data bytes
- * 1 byte checksum
- * Fill bytes needed to fil out to 4*NN bytes of payload
- *
- * The RP codes for EAVs when in VIP-1.1 mode, not in raw mode, &
- * in the vertical blanking interval are:
- * 0xb0 (Task 0 VerticalBlank HorizontalBlank 0 0 0 0)
- * 0xf0 (Task EvenField VerticalBlank HorizontalBlank 0 0 0 0)
- *
- * Since the V bit is only allowed to toggle in the EAV RP code, just
- * before the first active region line and for active lines, they are:
- * 0x90 (Task 0 0 HorizontalBlank 0 0 0 0)
- * 0xd0 (Task EvenField 0 HorizontalBlank 0 0 0 0)
- *
- * The user application DID bytes we care about are:
- * 0x91 (1 0 010 0 !ActiveLine AncDataPresent)
- * 0x55 (0 1 010 2ndField !ActiveLine AncDataPresent)
- *
- */
-static const u8 sliced_vbi_did[2] = { 0x91, 0x55 };
-
-struct vbi_anc_data {
- /* u8 eav[4]; */
- /* u8 idle[]; Variable number of idle bytes */
- u8 preamble[3];
- u8 did;
- u8 sdid;
- u8 data_count;
- u8 idid[2];
- u8 payload[1]; /* data_count of payload */
- /* u8 checksum; */
- /* u8 fill[]; Variable number of fill bytes */
-};
-
-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;
-}
-
-int cx18_av_g_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *svbi)
-{
- struct cx18 *cx = v4l2_get_subdevdata(sd);
- struct cx18_av_state *state = &cx->av_state;
- static const 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 is_pal = !(state->std & V4L2_STD_525_60);
- int i;
-
- memset(svbi, 0, sizeof(*svbi));
- /* we're done if raw VBI is active */
- if ((cx18_av_read(cx, 0x404) & 0x10) == 0)
- return 0;
-
- if (is_pal) {
- for (i = 7; i <= 23; i++) {
- u8 v = cx18_av_read(cx, 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];
- }
- } else {
- for (i = 10; i <= 21; i++) {
- u8 v = cx18_av_read(cx, 0x424 + i - 10);
-
- 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];
- }
- }
- return 0;
-}
-
-int cx18_av_s_raw_fmt(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt)
-{
- struct cx18 *cx = v4l2_get_subdevdata(sd);
- struct cx18_av_state *state = &cx->av_state;
-
- /* Setup standard */
- cx18_av_std_setup(cx);
-
- /* VBI Offset */
- cx18_av_write(cx, 0x47f, state->slicer_line_delay);
- cx18_av_write(cx, 0x404, 0x2e);
- return 0;
-}
-
-int cx18_av_s_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *svbi)
-{
- struct cx18 *cx = v4l2_get_subdevdata(sd);
- struct cx18_av_state *state = &cx->av_state;
- int is_pal = !(state->std & V4L2_STD_525_60);
- int i, x;
- u8 lcr[24];
-
- for (x = 0; x <= 23; x++)
- lcr[x] = 0x00;
-
- /* Setup standard */
- cx18_av_std_setup(cx);
-
- /* Sliced VBI */
- cx18_av_write(cx, 0x404, 0x32); /* Ancillary data */
- cx18_av_write(cx, 0x406, 0x13);
- cx18_av_write(cx, 0x47f, state->slicer_line_delay);
-
- /* Force impossible lines to 0 */
- 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;
- }
-
- /* Build register values for requested service lines */
- 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++)
- cx18_av_write(cx, i, lcr[6 + x]);
- } else {
- for (x = 1, i = 0x424; i <= 0x430; i++, x++)
- cx18_av_write(cx, i, lcr[9 + x]);
- for (i = 0x431; i <= 0x434; i++)
- cx18_av_write(cx, i, 0);
- }
-
- cx18_av_write(cx, 0x43c, 0x16);
- /* Should match vblank set in cx18_av_std_setup() */
- cx18_av_write(cx, 0x474, is_pal ? 38 : 26);
- return 0;
-}
-
-int cx18_av_decode_vbi_line(struct v4l2_subdev *sd,
- struct v4l2_decode_vbi_line *vbi)
-{
- struct cx18 *cx = v4l2_get_subdevdata(sd);
- struct cx18_av_state *state = &cx->av_state;
- struct vbi_anc_data *anc = (struct vbi_anc_data *)vbi->p;
- u8 *p;
- int did, sdid, l, err = 0;
-
- /*
- * Check for the ancillary data header for sliced VBI
- */
- if (anc->preamble[0] ||
- anc->preamble[1] != 0xff || anc->preamble[2] != 0xff ||
- (anc->did != sliced_vbi_did[0] &&
- anc->did != sliced_vbi_did[1])) {
- vbi->line = vbi->type = 0;
- return 0;
- }
-
- did = anc->did;
- sdid = anc->sdid & 0xf;
- l = anc->idid[0] & 0x3f;
- l += state->slicer_line_offset;
- p = anc->payload;
-
- /* Decode the SDID set by the slicer */
- switch (sdid) {
- case 1:
- sdid = V4L2_SLICED_TELETEXT_B;
- break;
- case 4:
- sdid = V4L2_SLICED_WSS_625;
- break;
- case 6:
- sdid = V4L2_SLICED_CAPTION_525;
- err = !odd_parity(p[0]) || !odd_parity(p[1]);
- break;
- case 9:
- sdid = V4L2_SLICED_VPS;
- if (decode_vps(p, p) != 0)
- err = 1;
- break;
- default:
- sdid = 0;
- err = 1;
- break;
- }
-
- vbi->type = err ? 0 : sdid;
- vbi->line = err ? 0 : l;
- vbi->is_second_field = err ? 0 : (did == sliced_vbi_did[1]);
- vbi->p = p;
- return 0;
-}
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