[media] it913x: endpoint size changes
Previously endpoint had been aligned to packet size (128)
Some early it9135 devices appear to have problems with this.
This patch now aligns with mpeg TS size (188)
With the pid filter off max size is increased to the maxmium
size (348 * 188)
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/dvb-usb/it913x.c b/drivers/media/dvb/dvb-usb/it913x.c
index 9abdaee..24f04b4 100644
--- a/drivers/media/dvb/dvb-usb/it913x.c
+++ b/drivers/media/dvb/dvb-usb/it913x.c
@@ -337,6 +337,13 @@
return ret;
}
+
+#define TS_MPEG_PKT_SIZE 188
+#define EP_LOW 21
+#define TS_BUFFER_SIZE_PID (EP_LOW*TS_MPEG_PKT_SIZE)
+#define EP_HIGH 348
+#define TS_BUFFER_SIZE_MAX (EP_HIGH*TS_MPEG_PKT_SIZE)
+
static int it913x_identify_state(struct usb_device *udev,
struct dvb_usb_device_properties *props,
struct dvb_usb_device_description **desc,
@@ -374,6 +381,17 @@
info("Dual mode=%x Remote=%x Tuner Type=%x", it913x_config.dual_mode
, remote, it913x_config.tuner_id_0);
+ /* Select Stream Buffer Size */
+ if (pid_filter)
+ props->adapter[0].fe[0].stream.u.bulk.buffersize =
+ TS_BUFFER_SIZE_MAX;
+ else
+ props->adapter[0].fe[0].stream.u.bulk.buffersize =
+ TS_BUFFER_SIZE_PID;
+ if (it913x_config.dual_mode)
+ props->adapter[1].fe[0].stream.u.bulk.buffersize =
+ props->adapter[0].fe[0].stream.u.bulk.buffersize;
+
if (firm_no > 0) {
*cold = 0;
return 0;
@@ -511,7 +529,7 @@
struct usb_device *udev = adap->dev->udev;
int ret = 0;
u8 adap_addr = I2C_BASE_ADDR + (adap->id << 5);
- u16 ep_size = adap->props.fe[0].stream.u.bulk.buffersize;
+ u16 ep_size = adap->props.fe[0].stream.u.bulk.buffersize / 4;
u8 pkt_size = 0x80;
if (adap->dev->udev->speed != USB_SPEED_HIGH)
@@ -610,8 +628,8 @@
.endpoint = 0x04,
.u = {/* Keep Low if PID filter on */
.bulk = {
- .buffersize = 3584,
-
+ .buffersize =
+ TS_BUFFER_SIZE_PID,
}
}
}
@@ -635,8 +653,8 @@
.endpoint = 0x05,
.u = {
.bulk = {
- .buffersize = 3584,
-
+ .buffersize =
+ TS_BUFFER_SIZE_PID,
}
}
}