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author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-14 05:13:22 +0200 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-15 21:25:07 +0200 |
commit | 0c0d06cac63ee327ceaab4b5ffe2206574ab86bd (patch) | |
tree | e759f0dc3185d97f2a0c6b5cd5e32ea6faa74d40 /drivers/media/usb/gspca/sn9c2028.h | |
parent | [media] b2c2: fix driver's build due to the lack of pci DMA code (diff) | |
download | linux-0c0d06cac63ee327ceaab4b5ffe2206574ab86bd.tar.xz linux-0c0d06cac63ee327ceaab4b5ffe2206574ab86bd.zip |
[media] rename most media/video usb drivers to media/usb
Rename all USB drivers with their own directory under
drivers/media/video into drivers/media/usb and update the
building system.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb/gspca/sn9c2028.h')
-rw-r--r-- | drivers/media/usb/gspca/sn9c2028.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/sn9c2028.h b/drivers/media/usb/gspca/sn9c2028.h new file mode 100644 index 000000000000..8fd1d3e05665 --- /dev/null +++ b/drivers/media/usb/gspca/sn9c2028.h @@ -0,0 +1,51 @@ +/* + * SN9C2028 common functions + * + * Copyright (C) 2009 Theodore Kilgore <kilgota@auburn,edu> + * + * Based closely upon the file gspca/pac_common.h + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +static const unsigned char sn9c2028_sof_marker[5] = + { 0xff, 0xff, 0x00, 0xc4, 0xc4 }; + +static unsigned char *sn9c2028_find_sof(struct gspca_dev *gspca_dev, + unsigned char *m, int len) +{ + struct sd *sd = (struct sd *) gspca_dev; + int i; + + /* Search for the SOF marker (fixed part) in the header */ + for (i = 0; i < len; i++) { + if (m[i] == sn9c2028_sof_marker[sd->sof_read]) { + sd->sof_read++; + if (sd->sof_read == sizeof(sn9c2028_sof_marker)) { + PDEBUG(D_FRAM, + "SOF found, bytes to analyze: %u." + " Frame starts at byte #%u", + len, i + 1); + sd->sof_read = 0; + return m + i + 1; + } + } else { + sd->sof_read = 0; + } + } + + return NULL; +} |