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V4L/DVB (14006): gscpa_sq905c: Better detection of CIF resolution cameras 

gscpa_sq905c: Better detection of CIF resolution cameras

Signed-off-by: Theodore Kilgore <kilgota@banach.math.auburn.edu>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Theodore Kilgore 2010-01-14 12:07:18 -03:00 committed by Mauro Carvalho Chehab
parent 127f548dbc
commit ed9885aa81
1 changed files with 43 additions and 1 deletions
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44
drivers/media/video/gspca/sq905c.c
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@ -47,6 +47,7 @@ MODULE_LICENSE("GPL");
/* Commands. These go in the "value" slot. */
#define SQ905C_CLEAR 0xa0 /* clear everything */
#define SQ905C_GET_ID 0x14f4 /* Read version number */
#define SQ905C_CAPTURE_LOW 0xa040 /* Starts capture at 160x120 */
#define SQ905C_CAPTURE_MED 0x1440 /* Starts capture at 320x240 */
#define SQ905C_CAPTURE_HI 0x2840 /* Starts capture at 320x240 */
@ -101,6 +102,26 @@ static int sq905c_command(struct gspca_dev *gspca_dev, u16 command, u16 index)
return 0;
}
static int sq905c_read(struct gspca_dev *gspca_dev, u16 command, u16 index,
int size)
{
int ret;
ret = usb_control_msg(gspca_dev->dev,
usb_rcvctrlpipe(gspca_dev->dev, 0),
USB_REQ_SYNCH_FRAME, /* request */
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
command, index, gspca_dev->usb_buf, size,
SQ905C_CMD_TIMEOUT);
if (ret < 0) {
PDEBUG(D_ERR, "%s: usb_control_msg failed (%d)",
__func__, ret);
return ret;
}
return 0;
}
/* This function is called as a workqueue function and runs whenever the camera
* is streaming data. Because it is a workqueue function it is allowed to sleep
* so we can use synchronous USB calls. To avoid possible collisions with other
@ -183,13 +204,34 @@ static int sd_config(struct gspca_dev *gspca_dev,
{
struct cam *cam = &gspca_dev->cam;
struct sd *dev = (struct sd *) gspca_dev;
int i, ret;
PDEBUG(D_PROBE,
"SQ9050 camera detected"
" (vid/pid 0x%04X:0x%04X)", id->idVendor, id->idProduct);
ret = sq905c_command(gspca_dev, SQ905C_GET_ID, 0);
if (ret < 0) {
PDEBUG(D_ERR, "Get version command failed");
return ret;
}
ret = sq905c_read(gspca_dev, 0xf5, 0, 20);
if (ret < 0) {
PDEBUG(D_ERR, "Reading version command failed");
return ret;
}
/* Note we leave out the usb id and the manufacturing date */
PDEBUG(D_PROBE,
"SQ9050 ID string: %02x - %02x %02x %02x %02x %02x %02x",
gspca_dev->usb_buf[3],
gspca_dev->usb_buf[14], gspca_dev->usb_buf[15],
gspca_dev->usb_buf[16], gspca_dev->usb_buf[17],
gspca_dev->usb_buf[18], gspca_dev->usb_buf[19]);
cam->cam_mode = sq905c_mode;
cam->nmodes = 2;
if (id->idProduct == 0x9050)
if (gspca_dev->usb_buf[15] == 0)
cam->nmodes = 1;
/* We don't use the buffer gspca allocates so make it small. */
cam->bulk_size = 32;