On Wed, Mar 19, 2014 at 06:01:43PM +0800, Li Jun wrote:
> From: Li Jun <b47...@freescale.com>
>
> This patch adds sysfs interface description for chipidea USB OTG HNP and SRP.
>
> Signed-off-by: Li Jun <b47...@freescale.com>
> ---
> .../ABI/testing/sysfs-platform-chipidea-usb-otg | 56
> ++++++++++++++++++++
> 1 file changed, 56 insertions(+)
>
> diff --git a/Documentation/ABI/testing/sysfs-platform-chipidea-usb-otg
> b/Documentation/ABI/testing/sysfs-platform-chipidea-usb-otg
> new file mode 100644
> index 0000000..6498810
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-platform-chipidea-usb-otg
> @@ -0,0 +1,56 @@
> +What: /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_req
> +Date: Feb 2014
> +Contact: Li Jun <b47...@freescale.com>
> +Description:
> + Can be set and read.
> + Set a_bus_req(A-device bus request) input to be 1 if
^ ^
> + the Application running on the A-device wants to use the bus,
> + and to be 0 when the Application no longer wants to use
> + the bus(or wants to work as peripheral). a_bus_req can also
> + be set to 1 by kernel in response to remote wakeup signaling
> + from the B-device, the A-device should decide to resume the bus.
> +
> + Valid values are "1" and "0".
> +
> + Reading: returns 1 if the application running on the A-device
> + is using the bus as host role, otherwise 0.
> +
> +What: /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_drop
> +Date: Feb 2014
> +Contact: Li Jun <b47...@freescale.com>
> +Description:
> + Can be set and read
> + The a_bus_drop(A-device bus drop) input is 1 when the
> + Application running on the A-device wants to power down
> + the bus, and is 0 otherwise, When a_bus_drop is 1, then
> + the a_bus_req shall be 0.
> +
> + Valid values are "1" and "0".
> +
> + Reading: returns 1 if the bus is off(vbus is turned off) by
> + A-device, otherwise 0.
> +
> +What: /sys/bus/platform/devices/ci_hdrc.0/inputs/b_bus_req
> +Date: Feb 2014
> +Contact: Li Jun <b47...@freescale.com>
> +Description:
> + Can be set and read.
> + The b_bus_req(B-device bus request) input is 1 during the time
> + that the Application running on the B-device wants to use the
> + bus as host, and is 0 when the Application no longer wants to
> + work as host and decides to switch back to be peripheral.
> +
> + Valid values are "1" and "0".
> +
> + Reading: returns if the application running on the B device
> + is using the bus as host role, otherwise 0.
> +
> +What: /sys/bus/platform/devices/ci_hdrc.0/inputs/a_clr_err
> +Date: Feb 2014
> +Contact: Li Jun <b47...@freescale.com>
> +Description:
> + Only can be set.
> + The a_clr_err(A-device Vbus error clear) input is used to clear
> + vbus error, then A-device will power down the bus.
> +
> + Valid value is "1"
> --
> 1.7.9.5
>
>
--
Best Regards,
Peter Chen
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