V4L/DVB (14006): gscpa_sq905c: Better detection of CIF resolution cameras
Theodore Kilgore [Thu, 14 Jan 2010 15:07:18 +0000 (12:07 -0300)]
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>

drivers/media/video/gspca/sq905c.c

index d70b156..bbfaf83 100644 (file)
@@ -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;