diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-av-vbi.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-av-vbi.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/media/video/cx18/cx18-av-vbi.c b/drivers/media/video/cx18/cx18-av-vbi.c index 72325d774a6..b5763372a31 100644 --- a/drivers/media/video/cx18/cx18-av-vbi.c +++ b/drivers/media/video/cx18/cx18-av-vbi.c @@ -25,8 +25,8 @@ #include "cx18-driver.h" /* - * For sliced VBI output, we set up to use VIP-1.1, 10-bit mode, - * NN counts 4 bytes Dwords, an IDID of 0x00 0x80 or one with the VBI line #. + * 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 @@ -35,8 +35,8 @@ * 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: 0x00 0x80 (programmed value) - * 4*NN data bytes + * 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 * @@ -65,7 +65,7 @@ struct vbi_anc_data { u8 sdid; u8 data_count; u8 idid[2]; - u8 payload[1]; /* 4*data_count of payload */ + u8 payload[1]; /* data_count of payload */ /* u8 checksum; */ /* u8 fill[]; Variable number of fill bytes */ }; @@ -215,6 +215,7 @@ int cx18_av_vbi(struct cx18 *cx, unsigned int cmd, void *arg) cx18_av_write(cx, 0x406, 0x13); cx18_av_write(cx, 0x47f, vbi_offset); + /* Force impossible lines to 0 */ if (is_pal) { for (i = 0; i <= 6; i++) svbi->service_lines[0][i] = @@ -229,6 +230,7 @@ int cx18_av_vbi(struct cx18 *cx, unsigned int cmd, void *arg) 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]) { @@ -242,7 +244,7 @@ int cx18_av_vbi(struct cx18 *cx, unsigned int cmd, void *arg) lcr[i] |= 6 << (4 * x); break; case V4L2_SLICED_VPS: - lcr[i] |= 9 << (4 * x); + lcr[i] |= 7 << (4 * x); /*'840 differs*/ break; } } |