Hi kashin,
My webcam was using mode 2 and endpoint 3 and hence I, have cheanged as
below in(Linux) drivers/usb/musb/plat_uds.c
static struct fifo_cfg __initdata mode_2_cfg[] = {
{ .hw_ep_num = 1, .style = FIFO_TX, .maxpacket = 256, .mode = BUF_DOUBLE,},
{ .hw_ep_num = 1, .style = FIFO_RX, .maxpacket = 256, .mode = BUF_DOUBLE, },
{ .hw_ep_num = 2, .style = FIFO_TX, .maxpacket = 512, },
{ .hw_ep_num = 2, .style = FIFO_RX, .maxpacket = 512, },
{ .hw_ep_num = 3, .style = FIFO_RXTX, .maxpacket = 1024,},
{ .hw_ep_num = 4, .style = FIFO_RXTX, .maxpacket = 256, },
};
As overall FIFO Size is only 4KB, I have gave max size of 1024 to EP3 and
rest is distributed to all others.
Let me know the status.
Thanks
Manjunath.AM
-----Original Message-----
From: kashin Lin [mailto:[EMAIL PROTECTED]
Sent: Saturday, November 17, 2007 12:18 AM
To: [EMAIL PROTECTED]
Subject: About "[Spca50x-devs] How to increase the packet size (USB)"
Hi,
i seen your posts on the mailinglist regarding using webcam on Davinci
EVM.
(
http://linux.omap.com/pipermail/davinci-linux-open-source/2007-July/003602.h
tml )
and i think the problem i encounter is the same as yours. so i send this
mail for more
help.
i use 2.6.23(montavista) kernel for my TI-DAVINCI based board,
gspcav1-20070508 as my
webcam driver and spcaview-20061208 as the application to test. i
got -ENOSPC when submit
urb, so it seems FIFO size isn't big enough.
i wonder how you reslove it? how to increase the FIFO size?
i am not familiar with the usb host controller driver. can you show me
detail to achieve it?
p.s. currently, i change ".maxpacket" in fifo mode 2 of ep1 & ep2 RX from
512 -> 1024.
and the ENOSPC error msg disappear but i got " Couldnt get
videopict params with VIDIOCGPICT"
when i use spcaview...
so i think the way i change FIFO size is wrong... so i really need
your help.
Thanks in advance
Best regard,
kashin lin
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