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path: root/drivers/media/video/cx25840/cx25840-vbi.c
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Diffstat (limited to 'drivers/media/video/cx25840/cx25840-vbi.c')
-rw-r--r--drivers/media/video/cx25840/cx25840-vbi.c314
1 files changed, 148 insertions, 166 deletions
diff --git a/drivers/media/video/cx25840/cx25840-vbi.c b/drivers/media/video/cx25840/cx25840-vbi.c
index 03f09b288eb8..35f6592f6c47 100644
--- a/drivers/media/video/cx25840/cx25840-vbi.c
+++ b/drivers/media/video/cx25840/cx25840-vbi.c
@@ -82,199 +82,181 @@ static int decode_vps(u8 * dst, u8 * p)
return err & 0xf0;
}
-int cx25840_vbi(struct i2c_client *client, unsigned int cmd, void *arg)
+int cx25840_vbi_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
{
- struct cx25840_state *state = to_state(i2c_get_clientdata(client));
- struct v4l2_format *fmt;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct cx25840_state *state = to_state(sd);
struct v4l2_sliced_vbi_format *svbi;
+ 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;
- 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 is_pal = !(state->std & V4L2_STD_525_60);
- 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;
+ 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)
+ return 0;
- if (is_pal) {
- for (i = 7; i <= 23; i++) {
- u8 v = cx25840_read(client, 0x424 + i - 7);
+ if (is_pal) {
+ 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];
- }
+ 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 = cx25840_read(client, 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];
- }
+ } else {
+ for (i = 10; i <= 21; i++) {
+ u8 v = cx25840_read(client, 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];
}
- break;
}
+ return 0;
+}
- case VIDIOC_S_FMT:
- {
- int is_pal = !(state->std & 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 &&
- fmt->type != V4L2_BUF_TYPE_VBI_CAPTURE)
- return -EINVAL;
- svbi = &fmt->fmt.sliced;
- if (fmt->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
- /* raw VBI */
- memset(svbi, 0, sizeof(*svbi));
-
- /* Setup standard */
- cx25840_std_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;
+int cx25840_vbi_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct cx25840_state *state = to_state(sd);
+ struct v4l2_sliced_vbi_format *svbi;
+ int is_pal = !(state->std & V4L2_STD_525_60);
+ int vbi_offset = is_pal ? 1 : 0;
+ int i, x;
+ u8 lcr[24];
+
+ if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE &&
+ fmt->type != V4L2_BUF_TYPE_VBI_CAPTURE)
+ return -EINVAL;
+ svbi = &fmt->fmt.sliced;
+ if (fmt->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
+ /* raw VBI */
+ memset(svbi, 0, sizeof(*svbi));
/* Setup standard */
cx25840_std_setup(client);
- /* Sliced VBI */
- cx25840_write(client, 0x404, 0x32); /* Ancillary data */
- cx25840_write(client, 0x406, 0x13);
+ /* VBI Offset */
cx25840_write(client, 0x47f, vbi_offset);
+ cx25840_write(client, 0x404, 0x2e);
+ return 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;
- }
-
- 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;
- }
- }
- }
+ for (x = 0; x <= 23; x++)
+ lcr[x] = 0x00;
+
+ /* Setup standard */
+ cx25840_std_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;
+ }
- 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);
+ 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;
}
}
+ }
- cx25840_write(client, 0x43c, 0x16);
-
- if (is_pal) {
- cx25840_write(client, 0x474, 0x2a);
- } else {
- cx25840_write(client, 0x474, 0x22);
- }
- 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);
}
- case VIDIOC_INT_DECODE_VBI_LINE:
- {
- struct v4l2_decode_vbi_line *vbi = arg;
- u8 *p = vbi->p;
- int id1, id2, l, err = 0;
+ cx25840_write(client, 0x43c, 0x16);
+ cx25840_write(client, 0x474, is_pal ? 0x2a : 0x22);
+ return 0;
+}
- if (p[0] || p[1] != 0xff || p[2] != 0xff ||
- (p[3] != 0x55 && p[3] != 0x91)) {
- vbi->line = vbi->type = 0;
- break;
- }
+int cx25840_decode_vbi_line(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi)
+{
+ struct cx25840_state *state = to_state(sd);
+ 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;
+ return 0;
+ }
- p += 4;
- id1 = p[-1];
- id2 = p[0] & 0xf;
- l = p[2] & 0x3f;
- l += state->vbi_line_offset;
- p += 4;
+ 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;
+ 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;
- }
-
- vbi->type = err ? 0 : id2;
- vbi->line = err ? 0 : l;
- vbi->is_second_field = err ? 0 : (id1 == 0x55);
- vbi->p = p;
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;
return 0;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-26 20:06:45 +0000