docs: usb: rename files to .rst and add them to drivers-api

While there are a mix of things here, most of the stuff
were written from Kernel developer's PoV. So, add them to
the driver-api book.

A follow up for this patch would be to move documents from
there that are specific to sysadmins, adding them to the
admin-guide.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 133 deletions

diff --git a/Documentation/usb/chipidea.txt b/Documentation/usb/chipidea.txt
deleted file mode 100644
index 68473abe2823..000000000000
--- a/Documentation/usb/chipidea.txt
+++ /dev/null
@@ -1,133 +0,0 @@
-==============================================
-ChipIdea Highspeed Dual Role Controller Driver
-==============================================
-
-1. How to test OTG FSM(HNP and SRP)
------------------------------------
-
-To show how to demo OTG HNP and SRP functions via sys input files
-with 2 Freescale i.MX6Q sabre SD boards.
-
-1.1 How to enable OTG FSM
--------------------------
-
-1.1.1 Select CONFIG_USB_OTG_FSM in menuconfig, rebuild kernel
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Image and modules. If you want to check some internal
-variables for otg fsm, mount debugfs, there are 2 files
-which can show otg fsm variables and some controller registers value::
-
-        cat /sys/kernel/debug/ci_hdrc.0/otg
-        cat /sys/kernel/debug/ci_hdrc.0/registers
-
-1.1.2 Add below entries in your dts file for your controller node
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-::
-
-        otg-rev = <0x0200>;
-        adp-disable;
-
-1.2 Test operations
--------------------
-
-1) Power up 2 Freescale i.MX6Q sabre SD boards with gadget class driver loaded
-   (e.g. g_mass_storage).
-
-2) Connect 2 boards with usb cable with one end is micro A plug, the other end
-   is micro B plug.
-
-   The A-device(with micro A plug inserted) should enumerate B-device.
-
-3) Role switch
-
-   On B-device::
-
-        echo 1 > /sys/bus/platform/devices/ci_hdrc.0/inputs/b_bus_req
-
-   B-device should take host role and enumerate A-device.
-
-4) A-device switch back to host.
-
-   On B-device::
-
-        echo 0 > /sys/bus/platform/devices/ci_hdrc.0/inputs/b_bus_req
-
-   or, by introducing HNP polling, B-Host can know when A-peripheral wish
-   to be host role, so this role switch also can be trigged in A-peripheral
-   side by answering the polling from B-Host, this can be done on A-device::
-
-        echo 1 > /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_req
-
-   A-device should switch back to host and enumerate B-device.
-
-5) Remove B-device(unplug micro B plug) and insert again in 10 seconds,
-   A-device should enumerate B-device again.
-
-6) Remove B-device(unplug micro B plug) and insert again after 10 seconds,
-   A-device should NOT enumerate B-device.
-
-   if A-device wants to use bus:
-
-   On A-device::
-
-        echo 0 > /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_drop
-        echo 1 > /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_req
-
-   if B-device wants to use bus:
-
-   On B-device::
-
-        echo 1 > /sys/bus/platform/devices/ci_hdrc.0/inputs/b_bus_req
-
-7) A-device power down the bus.
-
-   On A-device::
-
-        echo 1 > /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_drop
-
-   A-device should disconnect with B-device and power down the bus.
-
-8) B-device does data pulse for SRP.
-
-   On B-device::
-
-        echo 1 > /sys/bus/platform/devices/ci_hdrc.0/inputs/b_bus_req
-
-   A-device should resume usb bus and enumerate B-device.
-
-1.3 Reference document
-----------------------
-"On-The-Go and Embedded Host Supplement to the USB Revision 2.0 Specification
-July 27, 2012 Revision 2.0 version 1.1a"
-
-2. How to enable USB as system wakeup source
---------------------------------------------
-Below is the example for how to enable USB as system wakeup source
-at imx6 platform.
-
-2.1 Enable core's wakeup::
-
-        echo enabled > /sys/bus/platform/devices/ci_hdrc.0/power/wakeup
-
-2.2 Enable glue layer's wakeup::
-
-        echo enabled > /sys/bus/platform/devices/2184000.usb/power/wakeup
-
-2.3 Enable PHY's wakeup (optional)::
-
-        echo enabled > /sys/bus/platform/devices/20c9000.usbphy/power/wakeup
-
-2.4 Enable roothub's wakeup::
-
-        echo enabled > /sys/bus/usb/devices/usb1/power/wakeup
-
-2.5 Enable related device's wakeup::
-
-        echo enabled > /sys/bus/usb/devices/1-1/power/wakeup
-
-If the system has only one usb port, and you want usb wakeup at this port, you
-can use below script to enable usb wakeup::
-
-        for i in $(find /sys -name wakeup | grep usb);do echo enabled > $i;done;