diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2009-10-16 07:13:07 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 18:40:44 -0200 |
| commit | a511ba947600ae263f8c29c86020ba66a901d3e5 (patch) | |
| tree | d27d646a98aa45f92a2df78eb66d7cfe0f446ff6 /drivers/media/video/gspca/gspca.c | |
| parent | eea85b0a629970d462481a80e1d45f4d71fe797f (diff) | |
V4L/DVB (13178): gspca: Add support for Winbond W9967CF and W9968CF camera's
This patch adds support to gspca for the Winbond W9967CF and W9968CF
camera's. This is mostly a port of the existing v4l1 driver to gspca
(making it v4l2). But this also features fixes to the bitbanging i2c code
(send a nack not an ack after reading the last byte of a transfer), which
gets rid of the weird errors which were being seen there, and of
the smbus_refresh() hack to get around these errors.
Also the vstart settings have been tweaked to work with different
frequency filter settings.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/gspca/gspca.c')
| -rw-r--r-- | drivers/media/video/gspca/gspca.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index 179cbc14ee51..ebaa2425fb50 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -475,10 +475,18 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev) xfer = gspca_dev->cam.bulk ? USB_ENDPOINT_XFER_BULK : USB_ENDPOINT_XFER_ISOC; i = gspca_dev->alt; /* previous alt setting */ - while (--i >= 0) { - ep = alt_xfer(&intf->altsetting[i], xfer); - if (ep) - break; + if (gspca_dev->cam.reverse_alts) { + while (++i < gspca_dev->nbalt) { + ep = alt_xfer(&intf->altsetting[i], xfer); + if (ep) + break; + } + } else { + while (--i >= 0) { + ep = alt_xfer(&intf->altsetting[i], xfer); + if (ep) + break; + } } if (ep == NULL) { err("no transfer endpoint found"); @@ -599,7 +607,11 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev) /* set the higher alternate setting and * loop until urb submit succeeds */ - gspca_dev->alt = gspca_dev->nbalt; + if (gspca_dev->cam.reverse_alts) + gspca_dev->alt = 0; + else + gspca_dev->alt = gspca_dev->nbalt; + if (gspca_dev->sd_desc->isoc_init) { ret = gspca_dev->sd_desc->isoc_init(gspca_dev); if (ret < 0) |