In function rh_call_control , there is no support for
HUB_CLEAR_TT_BUFFER hub request.
Suppose if we are connecting low/full speed devices to a USB 2.0 EHCI
, host controller., through a HUB , which has a transaction translator
. Then the following function usb_hub_tt_clear_buffer will be called
Hi all,
Has any body in this list worked wiht ARC-USB High Speed OTG
controller with an ULPI interface to an ULPI Transceiver(external).
I put the ARC OTG in HOST MODE.
I am observing that for HOST Mode, the controller is not able to
detect the Device connects when i connect self power devices
Hi all,
Did any one work on the USB EHCI driver on a ARM platform (embedded).
Is the present EHCI driver code working on ARM platform where the
processor is in Big-Endian mode, and the USB-EHCI controller is put to
work in ltttle-endian mode.
Our problem is that the control transfers are not
me if my observation is wrong
Thanks
rak
On 6/15/06, David Brownell [EMAIL PROTECTED] wrote:
On Thursday 15 June 2006 8:29 am, rakesh kn wrote:
Hi,
The ARM processor is in BIG-ENDIAN mode. I have executed a program
to check in whcih mode is the processor.
And to repeat a previous
Hi all,
In Function qtd_fill() (FILE - ehci-q.c) , we get the DMA'able buffer
address, but when we fill the qTD, we convert the buffer address to
Little Endian. and assigning it as follows
qtd-hw_buf [0] = cpu_to_le32 ((u32)addr);
qtd-hw_buf_hi [0] = cpu_to_le32 ((u32)(addr 32));
If my
of DMA address to little endian from native
endian (big-endian), would solve the problem..
Thanks
On 6/15/06, David Brownell [EMAIL PROTECTED] wrote:
On Thursday 15 June 2006 4:14 am, rakesh kn wrote:
Hi all,
Let me repeat my earlier multiple requests to you that you not send
me private email
Hi ,
i am testing the ehci-hcd river for ARC HS OTG controller. I have the
following observations
when i try connecting devices.
After the probe, the POTRSCx values are 0x8c001000 for ARC controller
whcih is EHCI complaint.
COMMAND: 0x80b01
MODE: 0x7
STATUS: 0x88
INTERRUPT: 0x37
SET INTR
] wrote:
On Thursday 08 June 2006 12:50 am, rakesh kn wrote:
1) When a OTG hard disk(Self Powered) was connected, there was no
interrupt and my ehci_irq interrupt handler was not invoked.
When i power on the device i get a DISCONNECT event from the device and the
PORTSCx value changes
Hi ,
i am testing the ehci-hcd river for ARC HS OTG controller. I have the
following observations
when i try connecting devices.
After the probe, the POTRSCx values are 0x8c001000 for ARC controller
whcih is EHCI complaint.
COMMAND: 0x80b01
MODE: 0x7
STATUS: 0x88
INTERRUPT: 0x37
SET INTR
Hi all,
Port Reset and Port Suspend is done on ports on which device is connected.
\What is the difference between PORT SUSPEND, PORT RESET done using the
a ) SetPortFeature with Feature PORT_SUSPEND, PORT_RESUME as in USB
2.0 document in section 11.24.2.13.
b) Using the PORTSCx register in
Hi All,
Our team is developing a USB OTG Controller driver for Linux 2.6.16.11
kernel on a board which runs on ARM Core . The driver is for ARC USB
OTG Controller.
There are three modules involved viz
Host Controller Driver
Device
Hi all,
We are testing EHCI driver for ARC-OTG based controller core on a ARM 926 board.
The platform glue has been written. The driver is compiled to the
kernel . When the kernel boots up , the driver is loaded.
We have enabled USB_DEBUG and then going through the prints, its is
observed that
Hi all,
We are testing EHCI driver for ARC based controller core on a ARM 926 board.
The platform glue has been written. The driver is compiled to the
kernel . When the kernel boots up , the driver is loaded.
We have enabled USB_DEBUG and then going through the prints, its is
observed that the
Hi ,
If i set the hcd-power_budget field in the usb_hcd structure to 8mA
hcd-power_budget = 8mA,
then in the register_root_hub() function , the following line would
restrict the root hub power budget to each child to
rhdev-bus_mA = min(500u, hcd-power_budget) = 8mA,
Now when i connect a device
Hi ,
I have written the platform glue for ARC - EHCI controller. I provided
the suspend/resume call backs in struct platform_driver with CONFIG_PM
and CONFIG_USB_SUSPEND for selecti ve suspend/resume enabled.
My kernel is compile to be monolithic. So once the kernel boots up,
the driver is
Hi,
The OTG driver would consist of 3 kernel modules ,
Host driver module, Device driver module, and OTG transceiver driver module.
We have a SPH(Single Port Host) ARC Controller.
Since each of these modules have IRQ handlers and are requested to USB
IRQ with SH_IRQ and SA_INTERRUPT flags , we
-- Forwarded message --
From: rakesh kn [EMAIL PROTECTED]
Date: Apr 21, 2006 1:50 PM
Subject: Testing HCD SUSPEND/RESUME in non-PCI bus based (ARC) controllers
To: David Brownell [EMAIL PROTECTED]
Hi,
The struct hc_driver in 2.6.16 provides 2 methods for power management
Hi,
I have Linux 2.6.11 linux source with me which has the BSP stuff to
get to run on a ARM platform . For this a separate directory is there
in arch/ where the BSP stuff is written .
I am required to move to 2.6.16 . My primary aim is to write the USB
Controller driver for the ARC chip present
Hi All,
We are working in 2.6.11 kernel. We are supposed to test the linux
host controller driver for ARC-EHCI controller residing on a non-PCI
based bus.
All the basic functionality of EHCI driver for ARC can be tested using
usbtest.c kernel-mode test driver. We have to test suspend/resume
Hi ,
Please Help me with this issue.
To test the EHCI- HCD driver , i was referring to the site
http://www.linux-usb.org/usbtest/
It was told that the usbtest.c, driver test module, testusb.c
userland software is used.
Also the peripheral used is anything using a full speed Cypress EZ-USB
Hi,
I am trying to test the working of ehci-hcd with a generic usb-device.
I downloaded usbtest.c from linux-usb-test site.
i am using kernel 2.6.11 .
I compiled the test driver (usbtest.ko) and insmod it.
when i run the test program ./testusb -a , it says usbfs files are missing.
When i went
Hi,
For testing USB HCD driver , there is a kernel mode driver
usbtest.c , which comprises of 16 different tests.
I could get the first 2 tests.
Test 1 - Simple non-queued bulk Sink (IN) I/O tests
Test 2 - Simple non-queued bulk Source (OUT) I/O tests
How does the Test 3 and Test 4 work.?
Hi,
Those who have done USB HCD Testing for ehci ,
Please suggest the USB2.0 Card Reader that u have
used , which was successfully tested using usbtest.c.
The card reader should be using a Cypress EX-USB chip.
Please mention the Product Name and if possible the manufacturers.
Please suggest Card
Hi,
Can any one explain what does the function hub_set_power_budget in
file hub.h does.?
I can see from the code that it sets the power_budget to a minimum of
250 mA (= 500 /2)or 4 mA (if OTG , power = 8 /2) ..?
I have an ARC controller, with an embedded TT , also it is an OTG controller.
For
H i
ARC controller Core is having the ULPI interface as its
Transceiver. I have a some deviations in USBSTS, PORTSCx,OTGSC
registers for programming ULPI transceiver select, clocking etc.
Can u provide some help on general issues, on how the transceiver must
be approached while programming.
a)
Hi david,
The ehci_irq() function in struct hc_driver is the irq handler for the
EHCI host controller.
The EHCI specification section 4.15 specifies the different types of interrupts.
1) Transaction based interrupts
2)Host controller events (Port change events, etc.), and
3) Host Controller
Hi ,
Does the implementation of INTERRUPT handler or ISR routine of EHCI
controller driver
ehci_irq() handle the port change events mentioned in section
4.15.2.1 in ehci-r1.0 specification.
What should be the handling for the following status bit changes..
1)connect status change
2)port
Hi all,
Linux 2.6.16-rc6 has ehci-au1xxx.c file which is the EHCI host
controller driver for au1xxx .
Keeping the above framework which is a driver for a non-PCI EHCI
controller driver..
Can any one help me on how to provide OTG support to the above
framework. Please provide someinformation on
Hi,
I am relatively a newbie at USB development.
My doubts are simple . Can any one shed some lights on these.
1) What is the relevance of suspend and resume call backs that we
find in struct device_driver.? There are also the same call backs in
struct hc_driver?. What are they used for. ? Are
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