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path: root/drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c
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Diffstat (limited to 'drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c')
-rw-r--r--drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c b/drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c
index 285221e6b390..ac47b4c94388 100644
--- a/drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c
+++ b/drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c
@@ -208,11 +208,24 @@ static int pb0100_probe(struct sd *sd)
static int pb0100_start(struct sd *sd)
{
- int err;
+ int err, packet_size, max_packet_size;
+ struct usb_host_interface *alt;
+ struct usb_interface *intf;
struct cam *cam = &sd->gspca_dev.cam;
s32 *sensor_settings = sd->sensor_priv;
u32 mode = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
+ intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
+ alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
+ packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
+
+ /* If we don't have enough bandwidth use a lower framerate */
+ max_packet_size = sd->sensor->max_packet_size[sd->gspca_dev.curr_mode];
+ if (packet_size < max_packet_size)
+ stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1));
+ else
+ stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(5)|BIT(3)|BIT(1));
+
/* Setup sensor window */
if (mode & PB0100_CROP_TO_VGA) {
stv06xx_write_sensor(sd, PB_RSTART, 30);
@@ -328,9 +341,6 @@ static int pb0100_init(struct sd *sd)
stv06xx_write_bridge(sd, STV_REG03, 0x45);
stv06xx_write_bridge(sd, STV_REG04, 0x07);
- /* ISO-Size (0x27b: 635... why? - HDCS uses 847) */
- stv06xx_write_bridge(sd, STV_ISO_SIZE_L, 847);
-
/* Scan/timing for the sensor */
stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1));
stv06xx_write_sensor(sd, PB_CFILLIN, 14);