Sometimes a usb tree is not popolated after a system reset.
It seems a delay is required after setting the USB ports
for the MX.31 before resetting the ehci controller.
Signed-off-by: Stefano Babic <sbabic@denx.de>
This is a change similar to what is already in the Linux driver. We
should only program the CLRDATATOG bit when the current mode indicates
that it is needed.
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
After gadget reinitializaton (after tftp has been done once)
packet_received may become equal to 1 due to nuking OUT_EP
while disabling it in eth_reset_config.
rx_submit called from usb_eth_init queues rx_req first time.
But the first call of usb_eth_recv from NetLoop queues rx_req
again due to packet_received = 1.
The following flow shows the path of functions calls when
this happens:
net/net.c:NetLoop
|
+-net/eth.c:eth_init
| ether.c:usb_eth_init
| |
| +-udc_driver:usb_gadget_handle_interrupts
| | udc_driver:...
| | ether.c:eth_setup
| | ether.c:eth_set_config
| | ether.c:eth_reset_config
| | udc_driver:usb_ep_disable
| | udc_driver:nuke
| | ether.c:rx_complete
| | ether.c: packet_received = 1;
| |
| +-ether.c:rx_submit
| udc_driver:usb_ep_queue --- The first time when rx_req is queued
|
+-net/eth.c:eth_rx
ether.c:usb_eth_recv
|
+-udc_driver:usb_gadget_handle_interrupts
| udc_driver:... --- no interrupts, returning
+-ether.c: if (packet_received) { ...
ether.c:rx_submit
udc_driver:usb_ep_queue --- The second time!
Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
Remove and fix needless and destructive operations with tx/rx_req.
1) 'req' in rx_complete is always not NULL and always equals to rx_req
2) Free allocated tx_req if rx_req allocation has failed
3) Do not zero out tx/rx_req in usb_eth_init, leave this for
eth_reset_config which will be called at the next use of usb0
4) Additional check in usb_eth_recv is not required
Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
This fixes TIMEOUT with my Kingston 32GB USB3.0 flashdrive, which I experienced
on my PXA270 (USB 1.1) Vpac270 board.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Fixes most of checkpatch warnings and errors in USB gadget stack.
The most frequently encountered problems are:
1) "(foo*)", "foo * bar", "foo* bar"
2) C99 // comments
3) No spaces before/after/around '?', ':', '=', '==', ',', '&', '('
4) Spaces before '['
5) Spaces between function names and '('
6) Block braces in wrong places
7) Spaces before tabs
8) Macros with complex values not enclosed in parenthesis
9) Multiline comments start just after /*
Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
The patch removes an endless loop in the usb_eth_send
if the tx_complete is not called before going
in the loop. The driver interrupt routine is called
allowing the driver to check if the TX is completed.
Signed-off-by: Stefano Babic <sbabic@denx.de>
The buffer for the status request must be word aligned
because it is accessed with 32 bit pointer in the
eth_status_complete function.
Signed-off-by: Stefano Babic <sbabic@denx.de>
The patch is based on commit bb9496c6f7e853e5d4edd5397c9d45f1968d623c
(done by Julia Lawall <julia@diku.dk>) from linux-2.6.git.
Since num is unsigned, it would seem better to use simple_strtoul that
simple_strtol.
Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
Fix potential oops on rare error path.
The patch is based on commit e7b13ec9235b9fded90f826ceeb8c34548631351
(done by David Brownell <david-b@pacbell.net>) from linux-2.6.git.
Description of the issue taken from linux kernel bugzilla:
(https://bugzilla.kernel.org/show_bug.cgi?id=9594)
The potential error can be tracked down as follows:
(1) line 807: let the second conjunct on the "if" statment be false
meaning "dev->status_ep" is null. This means the "if" evaluates
to false.
follow thru the code until...
(2) line 808: usb_ep_disable(dev->status_ep) passes in a null argument,
however "usb_ep_disable" cannot handle that:
(from include/linux/usb/gadget.h)
191 static inline int
192 usb_ep_disable (struct usb_ep *ep)
193 {
194 return ep->ops->disable (ep);
195 }
--
Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
Fix possible oops on stat_req->buf initialization and fix ep0 and
status_ep confusion (last one is just intended for stat_req keeping).
Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
Signed-off-by: Stefano Babic <sbabic@denx.de>
Fix in_ep and out_ep confusion (rx_req was allocated from out_ep, not
from in_ep) and add lost dev->req freeing.
Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
Add lost 'qmult' definition for High Speed devices and make it
configurable through CONFIG_USB_ETH_QMULT.
Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
Prohibit simultaneous usage of both old and new gadget stacks and
allow UDC drivers to be dependent on CONFIG_USB_ETHER.
Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
The MUSB_TXCSR_MODE register setting isn't supported on Blackfin musb
parts, so stub it out to 0. This matches Linux behavior.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The Blackfin implementation of musb has a TXCOUNT register that needs to
be programmed when transmitting data.
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
AM35x supports only 32bit read operations so we need to have
workaround for 8bit and 16bit read operations.
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
This avoids a build warning that you see if anyone in the
header chain has included io.h (which is coming shortly). The previous
code redefined readl/writel; this patch renames it to be specific to
ohci. The defines are also moved from ohci-hcd.c to ohci.h.
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
MUSB PHY on OMAP3EVM Rev >= E uses external Vbus supply to support
500mA of power.We need to program MUSB PHY to use external Vbus
for this purpose.
Adding 'extvbus' member in musb_config structure which should be set
by all the boards where MUSB interface is using external Vbus supply.
Also added ULPI bus control register read/write abstraction for
Blackfin processor as it doesn't have ULPI registers.
CC: Remy Bohmer <linux@bohmer.net>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Changed musb_config initialization for omap3.c, davinci.c
and da8xx.c using name of structure fields. This would cause
the uninitialized field to be null by default and thus would
help in avoiding to init some flags required to be set only
for a few selected platforms.
CC: Remy Bohmer <linux@bohmer.net>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Add USB OHCI support for at91sam9g45ekes/at91sam9m10g45ek boards.
Note that according to errata from Atmel, OHCI is not operational
on the first revision of at91sam9g45 chip. So this patch enables
OHCI support for later revisions.
Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
ehci_submit_async() doesn't really zero out the QH transfer overlay (as the EHCI
specification suggests) which leads to the controller seeing the "token" field
as the previous call has left it, i.e.:
- if a timeout occured on the previous call (Active bit left as 1), controller
incorrectly tries to complete a previous transaction on a newly programmed
endpoint;
- if a halt occured on the previous call (Halted bit set to 1), controller just
ignores the newly programmed TD(s) and the function then keeps returning error
ad infinitum.
This turned out to be caused by the wrong orger of the arguments to the memset()
call in ehci_alloc(), so the allocated TDs weren't cleared either.
While at it, stop needlessly initializing the alternate next TD pointer in the
QH transfer overlay...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Remy Bohmer <linux@bohmer.net>
Add NEC EHCI controller to the list of the supported devices.
Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
drivers/usb/host/ehci-pci.c | 1 +
1 file changed, 1 insertion(+)
Commit b416191a14 (Fix EHCI port reset.) didn't
move the code that checked for successful clearing of the port reset bit from
ehci_submit_root(), relying on wait_ms() call instead. The mentioned code also
erroneously reported port reset state when the reset was already completed.
Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
USB devices on the 2nd port are not detected and I get the following message:
The request port(1) is not configured
That's with default CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS value of 2. 'req->index'
is 1-based, so the comparison in ehci_submit_root() can't be correct.
Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
On little endian machines, EHCI root hub's USB revision is reported as 0.2 --
cpu_to_le16() was missed in the initializer for the 'bcdUSB' descriptor field.
The same should be done for the 'bcdDevice' field.
Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
This patch is part of migrating the AT91 support towards
using C struct for all SOC access.
It removes one more CONFIG_AT91_LEGACY warning.
at91_pmc.h needs cleanup after migration of the drivers
has been done.
Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu>
I executed 'find . -name "*.[chS]" -perm 755 -exec chmod 644 {} \;'
Signed-off-by: Thomas Weber <swirl@gmx.li>
Add some more: neither Makefile nor config.mk need execute permissions.
Signed-off-by: Wolfgang Denk <wd@denx.de>
* add's a warning to all files, which need update to new SoC access
* convert common files in cpu/../at91 and a lot of drivers to use
c stucture SoC access
Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
The conversion from offsets to C structs lost a little padding in the DMA
register map. Accessing endpoints other than ep0 with DMA would fail as
the addresses wouldn't be adjusted correctly.
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
SPEAr SoCs contain a synopsys usb device controller.
USB Device IP can work in 2 modes
- DMA mode
- Slave mode
The driver adds support only for slave mode operation of usb
device IP. This driver is used along with standard USBTTY
driver to obtain a tty interface over USB on the host
Signed-off-by: Vipin <vipin.kumar@st.com>
When referring to PCIe and USB 'endpoint' is the standard naming
convention.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Remy Bohmer <linux@bohmer.net>
For MUSB devices that do not support multipoint (hubs), we have to emulate
a root hub so that we can support core operations like resetting ports.
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Wolfgang Denk
Damien Dusha
Stefano Babic
Bryan Wu
Vitaly Kuzmichev
Marek Vasut
Remy Bohmer
Mike Frysinger
Ajay Kumar Gupta
Steve Sakoman
Becky Bruce
Sergey Matyukevich
Sergei Shtylyov
Ender.Dai
Peter Tyser
Matthias Fuchs
Thomas Weber
Jens Scharsig
Prathap Srinivas
Cliff Cai
Vipin KUMAR
Chris Zhang