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| author | Antti Palosaari <crope@iki.fi> | 2009-09-12 13:35:29 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-09-18 23:47:53 -0300 |
| commit | 9c863278097a4905a78ee0d70d417641aecfac2e (patch) | |
| tree | 46e41f245dd5aa74c57cb9b660049ae1839af7a1 /drivers/media/dvb/dvb-usb/af9015.c | |
| parent | 353330c3ebf01c8f436b41690d95ec1548b6f364 (diff) | |
| download | lwn-9c863278097a4905a78ee0d70d417641aecfac2e.tar.gz lwn-9c863278097a4905a78ee0d70d417641aecfac2e.zip | |
V4L/DVB (12754): af9015: [2/2] fix USB TS configuration
Fix wrongly configured USB1.1 TS EP.
Patch serie also increases USB URB size to reduce wakeups.
USB1.1 URB size from 64 to 940 bytes
USB2.0 URB size from 512 to 16356 bytes
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/dvb-usb/af9015.c')
| -rw-r--r-- | drivers/media/dvb/dvb-usb/af9015.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/media/dvb/dvb-usb/af9015.c b/drivers/media/dvb/dvb-usb/af9015.c index 03838e629e06..fdfa0f54291c 100644 --- a/drivers/media/dvb/dvb-usb/af9015.c +++ b/drivers/media/dvb/dvb-usb/af9015.c @@ -369,12 +369,14 @@ static int af9015_init_endpoint(struct dvb_usb_device *d) u8 packet_size; deb_info("%s: USB speed:%d\n", __func__, d->udev->speed); + /* Windows driver uses packet count 21 for USB1.1 and 348 for USB2.0. + We use smaller - about 1/4 from the original, 5 and 87. */ #define TS_PACKET_SIZE 188 -#define TS_USB20_PACKET_COUNT 348 +#define TS_USB20_PACKET_COUNT 87 #define TS_USB20_FRAME_SIZE (TS_PACKET_SIZE*TS_USB20_PACKET_COUNT) -#define TS_USB11_PACKET_COUNT 21 +#define TS_USB11_PACKET_COUNT 5 #define TS_USB11_FRAME_SIZE (TS_PACKET_SIZE*TS_USB11_PACKET_COUNT) #define TS_USB20_MAX_PACKET_SIZE 512 @@ -868,7 +870,7 @@ static int af9015_read_config(struct usb_device *udev) /* USB1.1 set smaller buffersize and disable 2nd adapter */ if (udev->speed == USB_SPEED_FULL) { af9015_properties[i].adapter[0].stream.u.bulk.buffersize - = TS_USB11_MAX_PACKET_SIZE; + = TS_USB11_FRAME_SIZE; /* disable 2nd adapter because we don't have PID-filters */ af9015_config.dual_mode = 0; |