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usb: changes for v4.13 merge window

Browse Source 
This time around we have a total of 57 non-merge commits. A list of
 most important changes follows:
 
 - Improvements to dwc3 tracing interface
 - Initial dual-role support for dwc3
 - Improvements to how we handle DMA resources in dwc3
 - A new f_uac1 implementation which much more flexible
 - Removal of AVR32 bits
 - Improvements to f_mass_storage driver
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Merge tag 'usb-for-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-testing

Felipe writes:

usb: changes for v4.13 merge window

This time around we have a total of 57 non-merge commits. A list of
most important changes follows:

- Improvements to dwc3 tracing interface
- Initial dual-role support for dwc3
- Improvements to how we handle DMA resources in dwc3
- A new f_uac1 implementation which much more flexible
- Removal of AVR32 bits
- Improvements to f_mass_storage driver
This commit is contained in:
Greg Kroah-Hartman 2017-06-20 11:39:34 +08:00
commit 24040a5837
63 changed files with 5127 additions and 2073 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
Documentation/ABI/stable/sysfs-class-udc
View File

@ -55,14 +55,6 @@ Description:
Indicates the maximum USB speed supported by this port.
Users:
What: /sys/class/udc/<udc>/maximum_speed
Date: June 2011
KernelVersion: 3.1
Contact: Felipe Balbi <balbi@kernel.org>
Description:
Indicates the maximum USB speed supported by this port.
Users:
What: /sys/class/udc/<udc>/soft_connect
Date: June 2011
KernelVersion: 3.1
@ -91,3 +83,11 @@ Description:
'configured', and 'suspended'; however not all USB Device
Controllers support reporting all states.
Users:
What: /sys/class/udc/<udc>/function
Date: June 2017
KernelVersion: 4.13
Contact: Felipe Balbi <balbi@kernel.org>
Description:
Prints out name of currently running USB Gadget Driver.
Users:

18
Documentation/ABI/testing/configfs-usb-gadget-uac1
View File

@ -1,12 +1,14 @@
What: /config/usb-gadget/gadget/functions/uac1.name
Date: Sep 2014
KernelVersion: 3.18
Date: June 2017
KernelVersion: 4.14
Description:
The attributes:
audio_buf_size - audio buffer size
fn_cap - capture pcm device file name
fn_cntl - control device file name
fn_play - playback pcm device file name
req_buf_size - ISO OUT endpoint request buffer size
req_count - ISO OUT endpoint request count
c_chmask - capture channel mask
c_srate - capture sampling rate
c_ssize - capture sample size (bytes)
p_chmask - playback channel mask
p_srate - playback sampling rate
p_ssize - playback sample size (bytes)
req_number - the number of pre-allocated request
for both capture and playback

12
Documentation/ABI/testing/configfs-usb-gadget-uac1_legacy Normal file
View File

@ -0,0 +1,12 @@
What: /config/usb-gadget/gadget/functions/uac1_legacy.name
Date: Sep 2014
KernelVersion: 3.18
Description:
The attributes:
audio_buf_size - audio buffer size
fn_cap - capture pcm device file name
fn_cntl - control device file name
fn_play - playback pcm device file name
req_buf_size - ISO OUT endpoint request buffer size
req_count - ISO OUT endpoint request count

2
Documentation/devicetree/bindings/usb/dwc3.txt
View File

@ -45,6 +45,8 @@ Optional properties:
a free-running PHY clock.
- snps,dis-del-phy-power-chg-quirk: when set core will change PHY power
from P0 to P1/P2/P3 without delay.
- snps,dis-tx-ipgap-linecheck-quirk: when set, disable u2mac linestate check
during HS transmit.
- snps,is-utmi-l1-suspend: true when DWC3 asserts output signal
utmi_l1_suspend_n, false when asserts utmi_sleep_n
- snps,hird-threshold: HIRD threshold

21
Documentation/devicetree/bindings/usb/iproc-udc.txt Normal file
View File

@ -0,0 +1,21 @@
Broadcom IPROC USB Device controller.
The device node is used for UDCs integrated into Broadcom's
iProc family (Northstar2, Cygnus) of SoCs'. The UDC is based
on Synopsys Designware Cores AHB Subsystem Device Controller
IP.
Required properties:
- compatible: Add the compatibility strings for supported platforms.
For Broadcom NS2 platform, add "brcm,ns2-udc","brcm,iproc-udc".
For Broadcom Cygnus platform, add "brcm,cygnus-udc", "brcm,iproc-udc".
- reg: Offset and length of UDC register set
- interrupts: description of interrupt line
- phys: phandle to phy node.
Example:
udc_dwc: usb@664e0000 {
compatible = "brcm,ns2-udc", "brcm,iproc-udc";
reg = <0x664e0000 0x2000>;
interrupts = <GIC_SPI 424 IRQ_TYPE_LEVEL_HIGH>;
phys = <&usbdrd_phy>;

712
Documentation/driver-api/usb/dwc3.rst Normal file
View File

@ -0,0 +1,712 @@
===============================================================
Synopsys DesignWare Core SuperSpeed USB 3.0 Controller
===============================================================
:Author: Felipe Balbi <felipe.balbi@linux.intel.com>
:Date: April 2017
Introduction
============
The *Synopsys DesignWare Core SuperSpeed USB 3.0 Controller*
(hereinafter referred to as *DWC3*) is a USB SuperSpeed compliant
controller which can be configured in one of 4 ways:
1. Peripheral-only configuration
2. Host-only configuration
3. Dual-Role configuration
4. Hub configuration
Linux currently supports several versions of this controller. In all
likelyhood, the version in your SoC is already supported. At the time
of this writing, known tested versions range from 2.02a to 3.10a. As a
rule of thumb, anything above 2.02a should work reliably well.
Currently, we have many known users for this driver. In alphabetical
order:
1. Cavium
2. Intel Corporation
3. Qualcomm
4. Rockchip
5. ST
6. Samsung
7. Texas Instruments
8. Xilinx
Summary of Features
======================
For details about features supported by your version of DWC3, consult
your IP team and/or *Synopsys DesignWare Core SuperSpeed USB 3.0
Controller Databook*. Following is a list of features supported by the
driver at the time of this writing:
1. Up to 16 bidirectional endpoints (including the control
pipe - ep0)
2. Flexible endpoint configuration
3. Simultaneous IN and OUT transfer support
4. Scatter-list support
5. Up to 256 TRBs [#trb]_ per endpoint
6. Support for all transfer types (*Control*, *Bulk*,
*Interrupt*, and *Isochronous*)
7. SuperSpeed Bulk Streams
8. Link Power Management
9. Trace Events for debugging
10. DebugFS [#debugfs]_ interface
These features have all been exercised with many of the **in-tree**
gadget drivers. We have verified both *ConfigFS* [#configfs]_ and
legacy gadget drivers.
Driver Design
==============
The DWC3 driver sits on the *drivers/usb/dwc3/* directory. All files
related to this driver are in this one directory. This makes it easy
for new-comers to read the code and understand how it behaves.
Because of DWC3's configuration flexibility, the driver is a little
complex in some places but it should be rather straightforward to
understand.
The biggest part of the driver refers to the Gadget API.
Known Limitations
===================
Like any other HW, DWC3 has its own set of limitations. To avoid
constant questions about such problems, we decided to document them
here and have a single location to where we could point users.
OUT Transfer Size Requirements
---------------------------------
According to Synopsys Databook, all OUT transfer TRBs [#trb]_ must
have their *size* field set to a value which is integer divisible by
the endpoint's *wMaxPacketSize*. This means that *e.g.* in order to
receive a Mass Storage *CBW* [#cbw]_, req->length must either be set
to a value that's divisible by *wMaxPacketSize* (1024 on SuperSpeed,
512 on HighSpeed, etc), or DWC3 driver must add a Chained TRB pointing
to a throw-away buffer for the remaining length. Without this, OUT
transfers will **NOT** start.
Note that as of this writing, this won't be a problem because DWC3 is
fully capable of appending a chained TRB for the remaining length and
completely hide this detail from the gadget driver. It's still worth
mentioning because this seems to be the largest source of queries
about DWC3 and *non-working transfers*.
TRB Ring Size Limitation
-------------------------
We, currently, have a hard limit of 256 TRBs [#trb]_ per endpoint,
with the last TRB being a Link TRB [#link_trb]_ pointing back to the
first. This limit is arbitrary but it has the benefit of adding up to
exactly 4096 bytes, or 1 Page.
DWC3 driver will try its best to cope with more than 255 requests and,
for the most part, it should work normally. However this is not
something that has been exercised very frequently. If you experience
any problems, see section **Reporting Bugs** below.
Reporting Bugs
================
Whenever you encounter a problem with DWC3, first and foremost you
should make sure that:
1. You're running latest tag from `Linus' tree`_
2. You can reproduce the error without any out-of-tree changes
to DWC3
3. You have checked that it's not a fault on the host machine
After all these are verified, then here's how to capture enough
information so we can be of any help to you.
Required Information
---------------------
DWC3 relies exclusively on Trace Events for debugging. Everything is
exposed there, with some extra bits being exposed to DebugFS
[#debugfs]_.
In order to capture DWC3's Trace Events you should run the following
commands **before** plugging the USB cable to a host machine:
.. code-block:: sh
# mkdir -p /d
# mkdir -p /t
# mount -t debugfs none /d
# mount -t tracefs none /t
# echo 81920 > /t/buffer_size_kb
# echo 1 > /t/events/dwc3/enable
After this is done, you can connect your USB cable and reproduce the
problem. As soon as the fault is reproduced, make a copy of files
``trace`` and ``regdump``, like so:
.. code-block:: sh
# cp /t/trace /root/trace.txt
# cat /d/*dwc3*/regdump > /root/regdump.txt
Make sure to compress ``trace.txt`` and ``regdump.txt`` in a tarball
and email it to `me`_ with `linux-usb`_ in Cc. If you want to be extra
sure that I'll help you, write your subject line in the following
format:
**[BUG REPORT] usb: dwc3: Bug while doing XYZ**
On the email body, make sure to detail what you doing, which gadget
driver you were using, how to reproduce the problem, what SoC you're
using, which OS (and its version) was running on the Host machine.
With all this information, we should be able to understand what's
going on and be helpful to you.
Debugging
===========
First and foremost a disclaimer::
DISCLAIMER: The information available on DebugFS and/or TraceFS can
change at any time at any Major Linux Kernel Release. If writing
scripts, do **NOT** assume information to be available in the
current format.
With that out of the way, let's carry on.
If you're willing to debug your own problem, you deserve a round of
applause :-)
Anyway, there isn't much to say here other than Trace Events will be
really helpful in figuring out issues with DWC3. Also, access to
Synopsys Databook will be **really** valuable in this case.
A USB Sniffer can be helpful at times but it's not entirely required,
there's a lot that can be understood without looking at the wire.
Feel free to email `me`_ and Cc `linux-usb`_ if you need any help.
``DebugFS``
-------------
``DebugFS`` is very good for gathering snapshots of what's going on
with DWC3 and/or any endpoint.
On DWC3's ``DebugFS`` directory, you will find the following files and
directories:
``ep[0..15]{in,out}/``
``link_state``
``regdump``
``testmode``
``link_state``
``````````````
When read, ``link_state`` will print out one of ``U0``, ``U1``,
``U2``, ``U3``, ``SS.Disabled``, ``RX.Detect``, ``SS.Inactive``,
``Polling``, ``Recovery``, ``Hot Reset``, ``Compliance``,
``Loopback``, ``Reset``, ``Resume`` or ``UNKNOWN link state``.
This file can also be written to in order to force link to one of the
states above.
``regdump``
`````````````
File name is self-explanatory. When read, ``regdump`` will print out a
register dump of DWC3. Note that this file can be grepped to find the
information you want.
``testmode``
``````````````
When read, ``testmode`` will print out a name of one of the specified
USB 2.0 Testmodes (``test_j``, ``test_k``, ``test_se0_nak``,
``test_packet``, ``test_force_enable``) or the string ``no test`` in
case no tests are currently being executed.
In order to start any of these test modes, the same strings can be
written to the file and DWC3 will enter the requested test mode.
``ep[0..15]{in,out}``
``````````````````````
For each endpoint we expose one directory following the naming
convention ``ep$num$dir`` *(ep0in, ep0out, ep1in, ...)*. Inside each
of these directories you will find the following files:
``descriptor_fetch_queue``
``event_queue``
``rx_fifo_queue``
``rx_info_queue``
``rx_request_queue``
``transfer_type``
``trb_ring``
``tx_fifo_queue``
``tx_request_queue``
With access to Synopsys Databook, you can decode the information on
them.
``transfer_type``
~~~~~~~~~~~~~~~~~~
When read, ``transfer_type`` will print out one of ``control``,
``bulk``, ``interrupt`` or ``isochronous`` depending on what the
endpoint descriptor says. If the endpoint hasn't been enabled yet, it
will print ``--``.
``trb_ring``
~~~~~~~~~~~~~
When read, ``trb_ring`` will print out details about all TRBs on the
ring. It will also tell you where our enqueue and dequeue pointers are
located in the ring:
.. code-block:: sh
buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo
000000002c754000,481,normal,1,0,1,0,0,0
000000002c75c000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c78c000,481,normal,1,0,1,0,0,0
000000002c754000,481,normal,1,0,1,0,0,0
000000002c75c000,481,normal,1,0,1,0,0,0
000000002c784000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c78c000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c784000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c78c000,481,normal,1,0,1,0,0,0
000000002c754000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c784000,481,normal,1,0,1,0,0,0
000000002c78c000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c78c000,481,normal,1,0,1,0,0,0
000000002c784000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c78c000,481,normal,1,0,1,0,0,0
000000002c754000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c78c000,481,normal,1,0,1,0,0,0
000000002c75c000,481,normal,1,0,1,0,0,0
000000002c78c000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c754000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c754000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c78c000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c754000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c75c000,481,normal,1,0,1,0,0,0
000000002c780000,481,normal,1,0,1,0,0,0
000000002c784000,481,normal,1,0,1,0,0,0
000000002c788000,481,normal,1,0,1,0,0,0
000000002c78c000,481,normal,1,0,1,0,0,0
000000002c790000,481,normal,1,0,1,0,0,0
000000002c754000,481,normal,1,0,1,0,0,0
000000002c758000,481,normal,1,0,1,0,0,0
000000002c75c000,512,normal,1,0,1,0,0,1 D
0000000000000000,0,UNKNOWN,0,0,0,0,0,0 E
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
0000000000000000,0,UNKNOWN,0,0,0,0,0,0
00000000381ab000,0,link,0,0,0,0,0,1
Trace Events
-------------
DWC3 also provides several trace events which help us gathering
information about the behavior of the driver during runtime.
In order to use these events, you must enable ``CONFIG_FTRACE`` in
your kernel config.
For details about how enable DWC3 events, see section **Reporting
Bugs**.
The following subsections will give details about each Event Class and
each Event defined by DWC3.
MMIO
```````
It is sometimes useful to look at every MMIO access when looking for
bugs. Because of that, DWC3 offers two Trace Events (one for
dwc3_readl() and one for dwc3_writel()). ``TP_printk`` follows::
TP_printk("addr %p value %08x", __entry->base + __entry->offset,
__entry->value)
Interrupt Events
````````````````
Every IRQ event can be logged and decoded into a human readable
string. Because every event will be different, we don't give an
example other than the ``TP_printk`` format used::
TP_printk("event (%08x): %s", __entry->event,
dwc3_decode_event(__entry->event, __entry->ep0state))
Control Request
`````````````````
Every USB Control Request can be logged to the trace buffer. The
output format is::
TP_printk("%s", dwc3_decode_ctrl(__entry->bRequestType,
__entry->bRequest, __entry->wValue,
__entry->wIndex, __entry->wLength)
)
Note that Standard Control Requests will be decoded into
human-readable strings with their respective arguments. Class and
Vendor requests will be printed out a sequence of 8 bytes in hex
format.
Lifetime of a ``struct usb_request``
```````````````````````````````````````
The entire lifetime of a ``struct usb_request`` can be tracked on the
trace buffer. We have one event for each of allocation, free,
queueing, dequeueing, and giveback. Output format is::
TP_printk("%s: req %p length %u/%u %s%s%s ==> %d",
__get_str(name), __entry->req, __entry->actual, __entry->length,
__entry->zero ? "Z" : "z",
__entry->short_not_ok ? "S" : "s",
__entry->no_interrupt ? "i" : "I",
__entry->status
)
Generic Commands
````````````````````
We can log and decode every Generic Command with its completion
code. Format is::
TP_printk("cmd '%s' [%x] param %08x --> status: %s",
dwc3_gadget_generic_cmd_string(__entry->cmd),
__entry->cmd, __entry->param,
dwc3_gadget_generic_cmd_status_string(__entry->status)
)
Endpoint Commands
````````````````````
Endpoints commands can also be logged together with completion
code. Format is::
TP_printk("%s: cmd '%s' [%d] params %08x %08x %08x --> status: %s",
__get_str(name), dwc3_gadget_ep_cmd_string(__entry->cmd),
__entry->cmd, __entry->param0,
__entry->param1, __entry->param2,
dwc3_ep_cmd_status_string(__entry->cmd_status)
)
Lifetime of a ``TRB``
``````````````````````
A ``TRB`` Lifetime is simple. We are either preparing a ``TRB`` or
completing it. With these two events, we can see how a ``TRB`` changes
over time. Format is::
TP_printk("%s: %d/%d trb %p buf %08x%08x size %s%d ctrl %08x (%c%c%c%c:%c%c:%s)",
__get_str(name), __entry->queued, __entry->allocated,
__entry->trb, __entry->bph, __entry->bpl,
({char *s;
int pcm = ((__entry->size >> 24) & 3) + 1;
switch (__entry->type) {
case USB_ENDPOINT_XFER_INT:
case USB_ENDPOINT_XFER_ISOC:
switch (pcm) {
case 1:
s = "1x ";
break;
case 2:
s = "2x ";
break;
case 3:
s = "3x ";
break;
}
default:
s = "";
} s; }),
DWC3_TRB_SIZE_LENGTH(__entry->size), __entry->ctrl,
__entry->ctrl & DWC3_TRB_CTRL_HWO ? 'H' : 'h',
__entry->ctrl & DWC3_TRB_CTRL_LST ? 'L' : 'l',
__entry->ctrl & DWC3_TRB_CTRL_CHN ? 'C' : 'c',
__entry->ctrl & DWC3_TRB_CTRL_CSP ? 'S' : 's',
__entry->ctrl & DWC3_TRB_CTRL_ISP_IMI ? 'S' : 's',
__entry->ctrl & DWC3_TRB_CTRL_IOC ? 'C' : 'c',
dwc3_trb_type_string(DWC3_TRBCTL_TYPE(__entry->ctrl))
)
Lifetime of an Endpoint
```````````````````````
And endpoint's lifetime is summarized with enable and disable
operations, both of which can be traced. Format is::
TP_printk("%s: mps %d/%d streams %d burst %d ring %d/%d flags %c:%c%c%c%c%c:%c:%c",
__get_str(name), __entry->maxpacket,
__entry->maxpacket_limit, __entry->max_streams,
__entry->maxburst, __entry->trb_enqueue,
__entry->trb_dequeue,
__entry->flags & DWC3_EP_ENABLED ? 'E' : 'e',
__entry->flags & DWC3_EP_STALL ? 'S' : 's',
__entry->flags & DWC3_EP_WEDGE ? 'W' : 'w',
__entry->flags & DWC3_EP_BUSY ? 'B' : 'b',
__entry->flags & DWC3_EP_PENDING_REQUEST ? 'P' : 'p',
__entry->flags & DWC3_EP_MISSED_ISOC ? 'M' : 'm',
__entry->flags & DWC3_EP_END_TRANSFER_PENDING ? 'E' : 'e',
__entry->direction ? '<' : '>'
)
Structures, Methods and Definitions
====================================
.. kernel-doc:: drivers/usb/dwc3/core.h
:doc: main data structures
:internal:
.. kernel-doc:: drivers/usb/dwc3/gadget.h
:doc: gadget-only helpers
:internal:
.. kernel-doc:: drivers/usb/dwc3/gadget.c
:doc: gadget-side implementation
:internal:
.. kernel-doc:: drivers/usb/dwc3/core.c
:doc: core driver (probe, PM, etc)
:internal:
.. [#trb] Transfer Request Block
.. [#link_trb] Transfer Request Block pointing to another Transfer
Request Block.
.. [#debugfs] The Debug File System
.. [#configfs] The Config File System
.. [#cbw] Command Block Wrapper
.. _Linus' tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
.. _me: felipe.balbi@linux.intel.com
.. _linux-usb: linux-usb@vger.kernel.org

3
Documentation/driver-api/usb/index.rst
View File

@ -16,7 +16,10 @@ Linux USB API
persist
error-codes
writing_usb_driver
dwc3
writing_musb_glue_layer
typec
usb3-debug-port
.. only:: subproject and html

0
Documentation/usb/typec.rst → Documentation/driver-api/usb/typec.rst
View File

0
Documentation/usb/usb3-debug-port.rst → Documentation/driver-api/usb/usb3-debug-port.rst
View File

53
Documentation/usb/gadget-testing.txt
View File

@ -16,10 +16,11 @@ provided by gadgets.
13. RNDIS function
14. SERIAL function
15. SOURCESINK function
16. UAC1 function
16. UAC1 function (legacy implementation)
17. UAC2 function
18. UVC function
19. PRINTER function
20. UAC1 function (new API)
1. ACM function
@ -589,15 +590,16 @@ device: run the gadget
host: test-usb (tools/usb/testusb.c)
16. UAC1 function
16. UAC1 function (legacy implementation)
=================
The function is provided by usb_f_uac1.ko module.
The function is provided by usb_f_uac1_legacy.ko module.
Function-specific configfs interface
------------------------------------
The function name to use when creating the function directory is "uac1".
The function name to use when creating the function directory
is "uac1_legacy".
The uac1 function provides these attributes in its function directory:
audio_buf_size - audio buffer size
@ -772,3 +774,46 @@ host:
More advanced testing can be done with the prn_example
described in Documentation/usb/gadget-printer.txt.
20. UAC1 function (virtual ALSA card, using u_audio API)
=================
The function is provided by usb_f_uac1.ko module.
It will create a virtual ALSA card and the audio streams are simply
sinked to and sourced from it.
Function-specific configfs interface
------------------------------------
The function name to use when creating the function directory is "uac1".
The uac1 function provides these attributes in its function directory:
c_chmask - capture channel mask
c_srate - capture sampling rate
c_ssize - capture sample size (bytes)
p_chmask - playback channel mask
p_srate - playback sampling rate
p_ssize - playback sample size (bytes)
req_number - the number of pre-allocated request for both capture
and playback
The attributes have sane default values.
Testing the UAC1 function
-------------------------
device: run the gadget
host: aplay -l # should list our USB Audio Gadget
This function does not require real hardware support, it just
sends a stream of audio data to/from the host. In order to
actually hear something at the device side, a command similar
to this must be used at the device side:
$ arecord -f dat -t wav -D hw:2,0 | aplay -D hw:0,0 &
e.g.:
$ arecord -f dat -t wav -D hw:CARD=UAC1Gadget,DEV=0 | \
aplay -D default:CARD=OdroidU3

57
drivers/usb/dwc3/core.c
View File

@ -151,11 +151,24 @@ static void __dwc3_set_mode(struct work_struct *work)
switch (dwc->desired_dr_role) {
case DWC3_GCTL_PRTCAP_HOST:
ret = dwc3_host_init(dwc);
if (ret)
if (ret) {
dev_err(dwc->dev, "failed to initialize host\n");
} else {
if (dwc->usb2_phy)
otg_set_vbus(dwc->usb2_phy->otg, true);
if (dwc->usb2_generic_phy)
phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST);
}
break;
case DWC3_GCTL_PRTCAP_DEVICE:
dwc3_event_buffers_setup(dwc);
if (dwc->usb2_phy)
otg_set_vbus(dwc->usb2_phy->otg, false);
if (dwc->usb2_generic_phy)
phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);
ret = dwc3_gadget_init(dwc);
if (ret)
dev_err(dwc->dev, "failed to initialize peripheral\n");
@ -721,6 +734,8 @@ static void dwc3_core_setup_global_control(struct dwc3 *dwc)
dwc3_writel(dwc->regs, DWC3_GCTL, reg);
}
static int dwc3_core_get_phy(struct dwc3 *dwc);
/**
* dwc3_core_init - Low-level initialization of DWC3 Core
* @dwc: Pointer to our controller context structure
@ -759,6 +774,10 @@ static int dwc3_core_init(struct dwc3 *dwc)
if (ret)
goto err0;
ret = dwc3_core_get_phy(dwc);
if (ret)
goto err0;
dwc3_core_setup_global_control(dwc);
dwc3_core_num_eps(dwc);
@ -796,13 +815,19 @@ static int dwc3_core_init(struct dwc3 *dwc)
dwc3_writel(dwc->regs, DWC3_GUCTL2, reg);
}
/*
* Enable hardware control of sending remote wakeup in HS when
* the device is in the L1 state.
*/
if (dwc->revision >= DWC3_REVISION_290A) {
if (dwc->revision >= DWC3_REVISION_250A) {
reg = dwc3_readl(dwc->regs, DWC3_GUCTL1);
reg |= DWC3_GUCTL1_DEV_L1_EXIT_BY_HW;
/*
* Enable hardware control of sending remote wakeup
* in HS when the device is in the L1 state.
*/
if (dwc->revision >= DWC3_REVISION_290A)
reg |= DWC3_GUCTL1_DEV_L1_EXIT_BY_HW;
if (dwc->dis_tx_ipgap_linecheck_quirk)
reg |= DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS;
dwc3_writel(dwc->regs, DWC3_GUCTL1, reg);
}
@ -903,6 +928,12 @@ static int dwc3_core_init_mode(struct dwc3 *dwc)
switch (dwc->dr_mode) {
case USB_DR_MODE_PERIPHERAL:
dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE);
if (dwc->usb2_phy)
otg_set_vbus(dwc->usb2_phy->otg, false);
if (dwc->usb2_generic_phy)
phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);
ret = dwc3_gadget_init(dwc);
if (ret) {
if (ret != -EPROBE_DEFER)
@ -912,6 +943,12 @@ static int dwc3_core_init_mode(struct dwc3 *dwc)
break;
case USB_DR_MODE_HOST:
dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST);
if (dwc->usb2_phy)
otg_set_vbus(dwc->usb2_phy->otg, true);
if (dwc->usb2_generic_phy)
phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST);
ret = dwc3_host_init(dwc);
if (ret) {
if (ret != -EPROBE_DEFER)
@ -1023,6 +1060,8 @@ static void dwc3_get_properties(struct dwc3 *dwc)
"snps,dis-u2-freeclk-exists-quirk");
dwc->dis_del_phy_power_chg_quirk = device_property_read_bool(dev,
"snps,dis-del-phy-power-chg-quirk");
dwc->dis_tx_ipgap_linecheck_quirk = device_property_read_bool(dev,
"snps,dis-tx-ipgap-linecheck-quirk");
dwc->tx_de_emphasis_quirk = device_property_read_bool(dev,
"snps,tx_de_emphasis_quirk");
@ -1148,10 +1187,6 @@ static int dwc3_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, dwc);
dwc3_cache_hwparams(dwc);
ret = dwc3_core_get_phy(dwc);
if (ret)
goto err0;
spin_lock_init(&dwc->lock);
pm_runtime_set_active(dev);

48
drivers/usb/dwc3/core.h
View File

@ -1,4 +1,4 @@
/**
/*
* core.h - DesignWare USB3 DRD Core Header
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
@ -204,6 +204,7 @@
#define DWC3_GCTL_DSBLCLKGTNG BIT(0)
/* Global User Control 1 Register */
#define DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS BIT(28)
#define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW BIT(24)
/* Global USB2 PHY Configuration Register */
@ -522,7 +523,6 @@ struct dwc3_event_buffer {
* @trb_pool_dma: dma address of @trb_pool
* @trb_enqueue: enqueue 'pointer' into TRB array
* @trb_dequeue: dequeue 'pointer' into TRB array
* @desc: usb_endpoint_descriptor pointer
* @dwc: pointer to DWC controller
* @saved_state: ep state saved during hibernation
* @flags: endpoint flags (wedged, stalled, ...)
@ -664,7 +664,7 @@ enum dwc3_link_state {
* @bpl: DW0-3
* @bph: DW4-7
* @size: DW8-B
* @trl: DWC-F
* @ctrl: DWC-F
*/
struct dwc3_trb {
u32 bpl;
@ -674,16 +674,16 @@ struct dwc3_trb {
} __packed;
/**
* dwc3_hwparams - copy of HWPARAMS registers
* @hwparams0 - GHWPARAMS0
* @hwparams1 - GHWPARAMS1
* @hwparams2 - GHWPARAMS2
* @hwparams3 - GHWPARAMS3
* @hwparams4 - GHWPARAMS4
* @hwparams5 - GHWPARAMS5
* @hwparams6 - GHWPARAMS6
* @hwparams7 - GHWPARAMS7
* @hwparams8 - GHWPARAMS8
* struct dwc3_hwparams - copy of HWPARAMS registers
* @hwparams0: GHWPARAMS0
* @hwparams1: GHWPARAMS1
* @hwparams2: GHWPARAMS2
* @hwparams3: GHWPARAMS3
* @hwparams4: GHWPARAMS4
* @hwparams5: GHWPARAMS5
* @hwparams6: GHWPARAMS6
* @hwparams7: GHWPARAMS7
* @hwparams8: GHWPARAMS8
*/
struct dwc3_hwparams {
u32 hwparams0;
@ -730,7 +730,8 @@ struct dwc3_hwparams {
* @unaligned: true for OUT endpoints with length not divisible by maxp
* @direction: IN or OUT direction flag
* @mapped: true when request has been dma-mapped
* @queued: true when request has been queued to HW
* @started: request is started
* @zero: wants a ZLP
*/
struct dwc3_request {
struct usb_request request;
@ -761,17 +762,23 @@ struct dwc3_scratchpad_array {
/**
* struct dwc3 - representation of our controller
* @drd_work - workqueue used for role swapping
* @drd_work: workqueue used for role swapping
* @ep0_trb: trb which is used for the ctrl_req
* @bounce: address of bounce buffer
* @scratchbuf: address of scratch buffer
* @setup_buf: used while precessing STD USB requests
* @ep0_trb: dma address of ep0_trb
* @ep0_trb_addr: dma address of @ep0_trb
* @bounce_addr: dma address of @bounce
* @ep0_usb_req: dummy req used while handling STD USB requests
* @scratch_addr: dma address of scratchbuf
* @ep0_in_setup: one control transfer is completed and enter setup phase
* @lock: for synchronizing
* @dev: pointer to our struct device
* @sysdev: pointer to the DMA-capable device
* @xhci: pointer to our xHCI child
* @event_buffer_list: a list of event buffers
* @xhci_resources: struct resources for our @xhci child
* @ev_buf: struct dwc3_event_buffer pointer
* @eps: endpoint array
* @gadget: device side representation of the peripheral controller
* @gadget_driver: pointer to the gadget driver
* @regs: base address for our registers
@ -795,8 +802,6 @@ struct dwc3_scratchpad_array {
* @usb2_generic_phy: pointer to USB2 PHY
* @usb3_generic_phy: pointer to USB3 PHY
* @ulpi: pointer to ulpi interface
* @dcfg: saved contents of DCFG register
* @gctl: saved contents of GCTL register
* @isoch_delay: wValue from Set Isochronous Delay request;
* @u2sel: parameter from Set SEL request.
* @u2pel: parameter from Set SEL request.
@ -830,7 +835,6 @@ struct dwc3_scratchpad_array {
* @pending_events: true when we have pending IRQs to be handled
* @pullups_connected: true when Run/Stop bit is set
* @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround
* @start_config_issued: true when StartConfig command has been issued
* @three_stage_setup: set if we perform a three phase setup
* @usb3_lpm_capable: set if hadrware supports Link Power Management
* @disable_scramble_quirk: set if we enable the disable scramble quirk
@ -845,11 +849,14 @@ struct dwc3_scratchpad_array {
* @dis_u2_susphy_quirk: set if we disable usb2 suspend phy
* @dis_enblslpm_quirk: set if we clear enblslpm in GUSB2PHYCFG,
* disabling the suspend signal to the PHY.
* @dis_rxdet_inp3_quirk: set if we disable Rx.Detect in P3
* @dis_u2_freeclk_exists_quirk : set if we clear u2_freeclk_exists
* in GUSB2PHYCFG, specify that USB2 PHY doesn't
* provide a free-running PHY clock.
* @dis_del_phy_power_chg_quirk: set if we disable delay phy power
* change quirk.
* @dis_tx_ipgap_linecheck_quirk: set if we disable u2mac linestate
* check during HS transmit.
* @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk
* @tx_de_emphasis: Tx de-emphasis value
* 0 - -6dB de-emphasis
@ -1004,6 +1011,7 @@ struct dwc3 {
unsigned dis_rxdet_inp3_quirk:1;
unsigned dis_u2_freeclk_exists_quirk:1;
unsigned dis_del_phy_power_chg_quirk:1;
unsigned dis_tx_ipgap_linecheck_quirk:1;
unsigned tx_de_emphasis_quirk:1;
unsigned tx_de_emphasis:2;

247
drivers/usb/dwc3/debug.h
View File

@ -173,9 +173,8 @@ static inline const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
* @event: the event code
*/
static inline const char *
dwc3_gadget_event_string(const struct dwc3_event_devt *event)
dwc3_gadget_event_string(char *str, const struct dwc3_event_devt *event)
{
static char str[256];
enum dwc3_link_state state = event->event_info & DWC3_LINK_STATE_MASK;
switch (event->type) {
@ -223,15 +222,249 @@ dwc3_gadget_event_string(const struct dwc3_event_devt *event)
return str;
}
static inline void dwc3_decode_get_status(__u8 t, __u16 i, __u16 l, char *str)
{
switch (t & USB_RECIP_MASK) {
case USB_RECIP_INTERFACE:
sprintf(str, "Get Interface Status(Intf = %d, Length = %d)",
i, l);
break;
case USB_RECIP_ENDPOINT:
sprintf(str, "Get Endpoint Status(ep%d%s)",
i & ~USB_DIR_IN,
i & USB_DIR_IN ? "in" : "out");
break;
}
}
static inline void dwc3_decode_set_clear_feature(__u8 t, __u8 b, __u16 v,
__u16 i, char *str)
{
switch (t & USB_RECIP_MASK) {
case USB_RECIP_DEVICE:
sprintf(str, "%s Device Feature(%s%s)",
b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
({char *s;
switch (v) {
case USB_DEVICE_SELF_POWERED:
s = "Self Powered";
break;
case USB_DEVICE_REMOTE_WAKEUP:
s = "Remote Wakeup";
break;
case USB_DEVICE_TEST_MODE:
s = "Test Mode";
break;
default:
s = "UNKNOWN";
} s; }),
v == USB_DEVICE_TEST_MODE ?
({ char *s;
switch (i) {
case TEST_J:
s = ": TEST_J";
break;
case TEST_K:
s = ": TEST_K";
break;
case TEST_SE0_NAK:
s = ": TEST_SE0_NAK";
break;
case TEST_PACKET:
s = ": TEST_PACKET";
break;
case TEST_FORCE_EN:
s = ": TEST_FORCE_EN";
break;
default:
s = ": UNKNOWN";
} s; }) : "");
break;
case USB_RECIP_INTERFACE:
sprintf(str, "%s Interface Feature(%s)",
b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
v == USB_INTRF_FUNC_SUSPEND ?
"Function Suspend" : "UNKNOWN");
break;
case USB_RECIP_ENDPOINT:
sprintf(str, "%s Endpoint Feature(%s ep%d%s)",
b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
v == USB_ENDPOINT_HALT ? "Halt" : "UNKNOWN",
i & ~USB_DIR_IN,
i & USB_DIR_IN ? "in" : "out");
break;
}
}
static inline void dwc3_decode_set_address(__u16 v, char *str)
{
sprintf(str, "Set Address(Addr = %02x)", v);
}
static inline void dwc3_decode_get_set_descriptor(__u8 t, __u8 b, __u16 v,
__u16 i, __u16 l, char *str)
{
sprintf(str, "%s %s Descriptor(Index = %d, Length = %d)",
b == USB_REQ_GET_DESCRIPTOR ? "Get" : "Set",
({ char *s;
switch (v >> 8) {
case USB_DT_DEVICE:
s = "Device";
break;
case USB_DT_CONFIG:
s = "Configuration";
break;
case USB_DT_STRING:
s = "String";
break;
case USB_DT_INTERFACE:
s = "Interface";
break;
case USB_DT_ENDPOINT:
s = "Endpoint";
break;
case USB_DT_DEVICE_QUALIFIER:
s = "Device Qualifier";
break;
case USB_DT_OTHER_SPEED_CONFIG:
s = "Other Speed Config";
break;
case USB_DT_INTERFACE_POWER:
s = "Interface Power";
break;
case USB_DT_OTG:
s = "OTG";
break;
case USB_DT_DEBUG:
s = "Debug";
break;
case USB_DT_INTERFACE_ASSOCIATION:
s = "Interface Association";
break;
case USB_DT_BOS:
s = "BOS";
break;
case USB_DT_DEVICE_CAPABILITY:
s = "Device Capability";
break;
case USB_DT_PIPE_USAGE:
s = "Pipe Usage";
break;
case USB_DT_SS_ENDPOINT_COMP:
s = "SS Endpoint Companion";
break;
case USB_DT_SSP_ISOC_ENDPOINT_COMP:
s = "SSP Isochronous Endpoint Companion";
break;
default:
s = "UNKNOWN";
break;
} s; }), v & 0xff, l);
}
static inline void dwc3_decode_get_configuration(__u16 l, char *str)
{
sprintf(str, "Get Configuration(Length = %d)", l);
}
static inline void dwc3_decode_set_configuration(__u8 v, char *str)
{
sprintf(str, "Set Configuration(Config = %d)", v);
}
static inline void dwc3_decode_get_intf(__u16 i, __u16 l, char *str)
{
sprintf(str, "Get Interface(Intf = %d, Length = %d)", i, l);
}
static inline void dwc3_decode_set_intf(__u8 v, __u16 i, char *str)
{
sprintf(str, "Set Interface(Intf = %d, Alt.Setting = %d)", i, v);
}
static inline void dwc3_decode_synch_frame(__u16 i, __u16 l, char *str)
{
sprintf(str, "Synch Frame(Endpoint = %d, Length = %d)", i, l);
}
static inline void dwc3_decode_set_sel(__u16 l, char *str)
{
sprintf(str, "Set SEL(Length = %d)", l);
}
static inline void dwc3_decode_set_isoch_delay(__u8 v, char *str)
{
sprintf(str, "Set Isochronous Delay(Delay = %d ns)", v);
}
/**
* dwc3_decode_ctrl - returns a string represetion of ctrl request
*/
static inline const char *dwc3_decode_ctrl(char *str, __u8 bRequestType,
__u8 bRequest, __u16 wValue, __u16 wIndex, __u16 wLength)
{
switch (bRequest) {
case USB_REQ_GET_STATUS:
dwc3_decode_get_status(bRequestType, wIndex, wLength, str);
break;
case USB_REQ_CLEAR_FEATURE:
case USB_REQ_SET_FEATURE:
dwc3_decode_set_clear_feature(bRequestType, bRequest, wValue,
wIndex, str);
break;
case USB_REQ_SET_ADDRESS:
dwc3_decode_set_address(wValue, str);
break;
case USB_REQ_GET_DESCRIPTOR:
case USB_REQ_SET_DESCRIPTOR:
dwc3_decode_get_set_descriptor(bRequestType, bRequest, wValue,
wIndex, wLength, str);
break;
case USB_REQ_GET_CONFIGURATION:
dwc3_decode_get_configuration(wLength, str);
break;
case USB_REQ_SET_CONFIGURATION:
dwc3_decode_set_configuration(wValue, str);
break;
case USB_REQ_GET_INTERFACE:
dwc3_decode_get_intf(wIndex, wLength, str);
break;
case USB_REQ_SET_INTERFACE:
dwc3_decode_set_intf(wValue, wIndex, str);
break;
case USB_REQ_SYNCH_FRAME:
dwc3_decode_synch_frame(wIndex, wLength, str);
break;
case USB_REQ_SET_SEL:
dwc3_decode_set_sel(wLength, str);
break;
case USB_REQ_SET_ISOCH_DELAY:
dwc3_decode_set_isoch_delay(wValue, str);
break;
default:
sprintf(str, "%02x %02x %02x %02x %02x %02x %02x %02x",
bRequestType, bRequest,
cpu_to_le16(wValue) & 0xff,
cpu_to_le16(wValue) >> 8,
cpu_to_le16(wIndex) & 0xff,
cpu_to_le16(wIndex) >> 8,
cpu_to_le16(wLength) & 0xff,
cpu_to_le16(wLength) >> 8);
}
return str;
}
/**
* dwc3_ep_event_string - returns event name
* @event: then event code
*/
static inline const char *
dwc3_ep_event_string(const struct dwc3_event_depevt *event, u32 ep0state)
dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event,
u32 ep0state)
{
u8 epnum = event->endpoint_number;
static char str[256];
size_t len;
int status;
int ret;
@ -332,14 +565,14 @@ static inline const char *dwc3_gadget_event_type_string(u8 event)
}
}
static inline const char *dwc3_decode_event(u32 event, u32 ep0state)
static inline const char *dwc3_decode_event(char *str, u32 event, u32 ep0state)
{
const union dwc3_event evt = (union dwc3_event) event;
if (evt.type.is_devspec)
return dwc3_gadget_event_string(&evt.devt);
return dwc3_gadget_event_string(str, &evt.devt);
else
return dwc3_ep_event_string(&evt.depevt, ep0state);
return dwc3_ep_event_string(str, &evt.depevt, ep0state);
}
static inline const char *dwc3_ep_cmd_status_string(int status)

9
drivers/usb/dwc3/debugfs.c
View File

@ -653,16 +653,13 @@ static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused)
goto out;
}
seq_printf(s, "enqueue pointer %d\n", dep->trb_enqueue);
seq_printf(s, "dequeue pointer %d\n", dep->trb_dequeue);
seq_printf(s, "\n--------------------------------------------------\n\n");
seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n");
for (i = 0; i < DWC3_TRB_NUM; i++) {
struct dwc3_trb *trb = &dep->trb_pool[i];
unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl);
seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d\n",
seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d %c%c\n",
trb->bph, trb->bpl, trb->size,
dwc3_trb_type_string(type),
!!(trb->ctrl & DWC3_TRB_CTRL_IOC),
@ -670,7 +667,9 @@ static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused)
!!(trb->ctrl & DWC3_TRB_CTRL_CSP),
!!(trb->ctrl & DWC3_TRB_CTRL_CHN),
!!(trb->ctrl & DWC3_TRB_CTRL_LST),
!!(trb->ctrl & DWC3_TRB_CTRL_HWO));
!!(trb->ctrl & DWC3_TRB_CTRL_HWO),
dep->trb_enqueue == i ? 'E' : ' ',
dep->trb_dequeue == i ? 'D' : ' ');
}
out:

13
drivers/usb/dwc3/dwc3-exynos.c
View File

@ -125,12 +125,16 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
dev_err(dev, "couldn't get clock\n");
return -EINVAL;
}
clk_prepare_enable(exynos->clk);
ret = clk_prepare_enable(exynos->clk);
if (ret)
return ret;
exynos->susp_clk = devm_clk_get(dev, "usbdrd30_susp_clk");
if (IS_ERR(exynos->susp_clk))
exynos->susp_clk = NULL;
clk_prepare_enable(exynos->susp_clk);
ret = clk_prepare_enable(exynos->susp_clk);
if (ret)
goto susp_clk_err;
if (of_device_is_compatible(node, "samsung,exynos7-dwusb3")) {
exynos->axius_clk = devm_clk_get(dev, "usbdrd30_axius_clk");
@ -139,7 +143,9 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
ret = -ENODEV;
goto axius_clk_err;
}
clk_prepare_enable(exynos->axius_clk);
ret = clk_prepare_enable(exynos->axius_clk);
if (ret)
goto axius_clk_err;
} else {
exynos->axius_clk = NULL;
}
@ -197,6 +203,7 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
clk_disable_unprepare(exynos->axius_clk);
axius_clk_err:
clk_disable_unprepare(exynos->susp_clk);
susp_clk_err:
clk_disable_unprepare(exynos->clk);
return ret;
}

2
drivers/usb/dwc3/dwc3-st.c
View File

@ -230,7 +230,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
dwc3_data->syscfg_reg_off = res->start;
dev_vdbg(&pdev->dev, "glue-logic addr 0x%p, syscfg-reg offset 0x%x\n",
dev_vdbg(&pdev->dev, "glue-logic addr 0x%pK, syscfg-reg offset 0x%x\n",
dwc3_data->glue_base, dwc3_data->syscfg_reg_off);
dwc3_data->rstc_pwrdn =

8
drivers/usb/dwc3/ep0.c
View File

@ -1,4 +1,4 @@
/**
/*
* ep0.c - DesignWare USB3 DRD Controller Endpoint 0 Handling
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
@ -319,10 +319,16 @@ static int dwc3_ep0_handle_status(struct dwc3 *dwc,
{
struct dwc3_ep *dep;
u32 recip;
u32 value;
u32 reg;
u16 usb_status = 0;
__le16 *response_pkt;
/* We don't support PTM_STATUS */
value = le16_to_cpu(ctrl->wValue);
if (value != 0)
return -EINVAL;
recip = ctrl->bRequestType & USB_RECIP_MASK;
switch (recip) {
case USB_RECIP_DEVICE:

299
drivers/usb/dwc3/gadget.c
View File

@ -1,4 +1,4 @@
/**
/*
* gadget.c - DesignWare USB3 DRD Controller Gadget Framework Link
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
@ -36,13 +36,12 @@
#include "io.h"
/**
* dwc3_gadget_set_test_mode - Enables USB2 Test Modes
* dwc3_gadget_set_test_mode - enables usb2 test modes
* @dwc: pointer to our context structure
* @mode: the mode to set (J, K SE0 NAK, Force Enable)
*
* Caller should take care of locking. This function will
* return 0 on success or -EINVAL if wrong Test Selector
* is passed
* Caller should take care of locking. This function will return 0 on
* success or -EINVAL if wrong Test Selector is passed.
*/
int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode)
{
@ -69,7 +68,7 @@ int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode)
}
/**
* dwc3_gadget_get_link_state - Gets current state of USB Link
* dwc3_gadget_get_link_state - gets current state of usb link
* @dwc: pointer to our context structure
*
* Caller should take care of locking. This function will
@ -85,7 +84,7 @@ int dwc3_gadget_get_link_state(struct dwc3 *dwc)
}
/**
* dwc3_gadget_set_link_state - Sets USB Link to a particular State
* dwc3_gadget_set_link_state - sets usb link to a particular state
* @dwc: pointer to our context structure
* @state: the state to put link into
*
@ -143,8 +142,8 @@ int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state)
}
/**
* dwc3_ep_inc_trb() - Increment a TRB index.
* @index - Pointer to the TRB index to increment.
* dwc3_ep_inc_trb - increment a trb index.
* @index: Pointer to the TRB index to increment.
*
* The index should never point to the link TRB. After incrementing,
* if it is point to the link TRB, wrap around to the beginning. The
@ -157,16 +156,34 @@ static void dwc3_ep_inc_trb(u8 *index)
*index = 0;
}
/**
* dwc3_ep_inc_enq - increment endpoint's enqueue pointer
* @dep: The endpoint whose enqueue pointer we're incrementing
*/
static void dwc3_ep_inc_enq(struct dwc3_ep *dep)
{
dwc3_ep_inc_trb(&dep->trb_enqueue);
}
/**
* dwc3_ep_inc_deq - increment endpoint's dequeue pointer
* @dep: The endpoint whose enqueue pointer we're incrementing
*/
static void dwc3_ep_inc_deq(struct dwc3_ep *dep)
{
dwc3_ep_inc_trb(&dep->trb_dequeue);
}
/**
* dwc3_gadget_giveback - call struct usb_request's ->complete callback
* @dep: The endpoint to whom the request belongs to
* @req: The request we're giving back
* @status: completion code for the request
*
* Must be called with controller's lock held and interrupts disabled. This
* function will unmap @req and call its ->complete() callback to notify upper
* layers that it has completed.
*/
void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
int status)
{
@ -193,6 +210,15 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
pm_runtime_put(dwc->dev);
}
/**
* dwc3_send_gadget_generic_command - issue a generic command for the controller
* @dwc: pointer to the controller context
* @cmd: the command to be issued
* @param: command parameter
*
* Caller should take care of locking. Issue @cmd with a given @param to @dwc
* and wait for its completion.
*/
int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned cmd, u32 param)
{
u32 timeout = 500;
@ -225,6 +251,15 @@ int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned cmd, u32 param)
static int __dwc3_gadget_wakeup(struct dwc3 *dwc);
/**
* dwc3_send_gadget_ep_cmd - issue an endpoint command
* @dep: the endpoint to which the command is going to be issued
* @cmd: the command to be issued
* @params: parameters to the command
*
* Caller should handle locking. This function will issue @cmd with given
* @params to @dep and wait for its completion.
*/
int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned cmd,
struct dwc3_gadget_ep_cmd_params *params)
{
@ -422,36 +457,38 @@ static void dwc3_free_trb_pool(struct dwc3_ep *dep)
static int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep);
/**
* dwc3_gadget_start_config - Configure EP resources
* dwc3_gadget_start_config - configure ep resources
* @dwc: pointer to our controller context structure
* @dep: endpoint that is being enabled
*
* The assignment of transfer resources cannot perfectly follow the
* data book due to the fact that the controller driver does not have
* all knowledge of the configuration in advance. It is given this
* information piecemeal by the composite gadget framework after every
* SET_CONFIGURATION and SET_INTERFACE. Trying to follow the databook
* programming model in this scenario can cause errors. For two
* reasons:
* Issue a %DWC3_DEPCMD_DEPSTARTCFG command to @dep. After the command's
* completion, it will set Transfer Resource for all available endpoints.
*
* 1) The databook says to do DEPSTARTCFG for every SET_CONFIGURATION
* and SET_INTERFACE (8.1.5). This is incorrect in the scenario of
* multiple interfaces.
* The assignment of transfer resources cannot perfectly follow the data book
* due to the fact that the controller driver does not have all knowledge of the
* configuration in advance. It is given this information piecemeal by the
* composite gadget framework after every SET_CONFIGURATION and
* SET_INTERFACE. Trying to follow the databook programming model in this
* scenario can cause errors. For two reasons:
*
* 2) The databook does not mention doing more DEPXFERCFG for new
* 1) The databook says to do %DWC3_DEPCMD_DEPSTARTCFG for every
* %USB_REQ_SET_CONFIGURATION and %USB_REQ_SET_INTERFACE (8.1.5). This is
* incorrect in the scenario of multiple interfaces.
*
* 2) The databook does not mention doing more %DWC3_DEPCMD_DEPXFERCFG for new
* endpoint on alt setting (8.1.6).
*
* The following simplified method is used instead:
*
* All hardware endpoints can be assigned a transfer resource and this
* setting will stay persistent until either a core reset or
* hibernation. So whenever we do a DEPSTARTCFG(0) we can go ahead and
* do DEPXFERCFG for every hardware endpoint as well. We are
* All hardware endpoints can be assigned a transfer resource and this setting
* will stay persistent until either a core reset or hibernation. So whenever we
* do a %DWC3_DEPCMD_DEPSTARTCFG(0) we can go ahead and do
* %DWC3_DEPCMD_DEPXFERCFG for every hardware endpoint as well. We are
* guaranteed that there are as many transfer resources as endpoints.
*
* This function is called for each endpoint when it is being enabled
* but is triggered only when called for EP0-out, which always happens
* first, and which should only happen in one of the above conditions.
* This function is called for each endpoint when it is being enabled but is
* triggered only when called for EP0-out, which always happens first, and which
* should only happen in one of the above conditions.
*/
static int dwc3_gadget_start_config(struct dwc3 *dwc, struct dwc3_ep *dep)
{
@ -569,11 +606,13 @@ static int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep)
}
/**
* __dwc3_gadget_ep_enable - Initializes a HW endpoint
* __dwc3_gadget_ep_enable - initializes a hw endpoint
* @dep: endpoint to be initialized
* @desc: USB Endpoint Descriptor
* @modify: if true, modify existing endpoint configuration
* @restore: if true, restore endpoint configuration from scratch buffer
*
* Caller should take care of locking
* Caller should take care of locking. Execute all necessary commands to
* initialize a HW endpoint so it can be used by a gadget driver.
*/
static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
bool modify, bool restore)
@ -685,11 +724,13 @@ static void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep)
}
/**
* __dwc3_gadget_ep_disable - Disables a HW endpoint
* __dwc3_gadget_ep_disable - disables a hw endpoint
* @dep: the endpoint to disable
*
* This function also removes requests which are currently processed ny the
* hardware and those which are not yet scheduled.
* This function undoes what __dwc3_gadget_ep_enable did and also removes
* requests which are currently being processed by the hardware and those which
* are not yet scheduled.
*
* Caller should take care of locking.
*/
static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep)
@ -932,7 +973,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
}
/**
* dwc3_ep_prev_trb() - Returns the previous TRB in the ring
* dwc3_ep_prev_trb - returns the previous TRB in the ring
* @dep: The endpoint with the TRB ring
* @index: The index of the current TRB in the ring
*
@ -953,7 +994,6 @@ static struct dwc3_trb *dwc3_ep_prev_trb(struct dwc3_ep *dep, u8 index)
static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep)
{
struct dwc3_trb *tmp;
struct dwc3 *dwc = dep->dwc;
u8 trbs_left;
/*
@ -965,8 +1005,7 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep)
*/
if (dep->trb_enqueue == dep->trb_dequeue) {
tmp = dwc3_ep_prev_trb(dep, dep->trb_enqueue);
if (dev_WARN_ONCE(dwc->dev, tmp->ctrl & DWC3_TRB_CTRL_HWO,
"%s No TRBS left\n", dep->name))
if (tmp->ctrl & DWC3_TRB_CTRL_HWO)
return 0;
return DWC3_TRB_NUM - 1;
@ -1101,6 +1140,17 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep)
}
list_for_each_entry_safe(req, n, &dep->pending_list, list) {
struct dwc3 *dwc = dep->dwc;
int ret;
ret = usb_gadget_map_request_by_dev(dwc->sysdev, &req->request,
dep->direction);
if (ret)
return;
req->sg = req->request.sg;
req->num_pending_sgs = req->request.num_mapped_sgs;
if (req->num_pending_sgs > 0)
dwc3_prepare_one_trb_sg(dep, req);
else
@ -1207,7 +1257,7 @@ static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
{
struct dwc3 *dwc = dep->dwc;
int ret;
int ret = 0;
if (!dep->endpoint.desc) {
dev_err(dwc->dev, "%s: can't queue to disabled endpoint\n",
@ -1215,12 +1265,9 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
return -ESHUTDOWN;
}
if (WARN(req->dep != dep, "request %p belongs to '%s'\n",
&req->request, req->dep->name)) {
dev_err(dwc->dev, "%s: request %p belongs to '%s'\n",
dep->name, &req->request, req->dep->name);
if (WARN(req->dep != dep, "request %pK belongs to '%s'\n",
&req->request, req->dep->name))
return -EINVAL;
}
pm_runtime_get(dwc->dev);
@ -1231,14 +1278,6 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
trace_dwc3_ep_queue(req);
ret = usb_gadget_map_request_by_dev(dwc->sysdev, &req->request,
dep->direction);
if (ret)
return ret;
req->sg = req->request.sg;
req->num_pending_sgs = req->request.num_mapped_sgs;
list_add_tail(&req->list, &dep->pending_list);
/*
@ -1396,7 +1435,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,
}
goto out1;
}
dev_err(dwc->dev, "request %p was not queued to %s\n",
dev_err(dwc->dev, "request %pK was not queued to %s\n",
request, ep->name);
ret = -EINVAL;
goto out0;
@ -1741,8 +1780,8 @@ static irqreturn_t dwc3_interrupt(int irq, void *_dwc);
static irqreturn_t dwc3_thread_interrupt(int irq, void *_dwc);
/**
* dwc3_gadget_setup_nump - Calculate and initialize NUMP field of DCFG
* dwc: pointer to our context structure
* dwc3_gadget_setup_nump - calculate and initialize NUMP field of %DWC3_DCFG
* @dwc: pointer to our context structure
*
* The following looks like complex but it's actually very simple. In order to
* calculate the number of packets we can burst at once on OUT transfers, we're
@ -1798,49 +1837,6 @@ static int __dwc3_gadget_start(struct dwc3 *dwc)
dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), 0);
}
reg = dwc3_readl(dwc->regs, DWC3_DCFG);
reg &= ~(DWC3_DCFG_SPEED_MASK);
/**
* WORKAROUND: DWC3 revision < 2.20a have an issue
* which would cause metastability state on Run/Stop
* bit if we try to force the IP to USB2-only mode.
*
* Because of that, we cannot configure the IP to any
* speed other than the SuperSpeed
*
* Refers to:
*
* STAR#9000525659: Clock Domain Crossing on DCTL in
* USB 2.0 Mode
*/
if (dwc->revision < DWC3_REVISION_220A) {
reg |= DWC3_DCFG_SUPERSPEED;
} else {
switch (dwc->maximum_speed) {
case USB_SPEED_LOW:
reg |= DWC3_DCFG_LOWSPEED;
break;
case USB_SPEED_FULL:
reg |= DWC3_DCFG_FULLSPEED;
break;
case USB_SPEED_HIGH:
reg |= DWC3_DCFG_HIGHSPEED;
break;
case USB_SPEED_SUPER_PLUS:
reg |= DWC3_DCFG_SUPERSPEED_PLUS;
break;
default:
dev_err(dwc->dev, "invalid dwc->maximum_speed (%d)\n",
dwc->maximum_speed);
/* fall through */
case USB_SPEED_SUPER:
reg |= DWC3_DCFG_SUPERSPEED;
break;
}
}
dwc3_writel(dwc->regs, DWC3_DCFG, reg);
/*
* We are telling dwc3 that we want to use DCFG.NUMP as ACK TP's NUMP
* field instead of letting dwc3 itself calculate that automatically.
@ -1972,6 +1968,63 @@ static int dwc3_gadget_stop(struct usb_gadget *g)
return 0;
}
static void dwc3_gadget_set_speed(struct usb_gadget *g,
enum usb_device_speed speed)
{
struct dwc3 *dwc = gadget_to_dwc(g);
unsigned long flags;
u32 reg;
spin_lock_irqsave(&dwc->lock, flags);
reg = dwc3_readl(dwc->regs, DWC3_DCFG);
reg &= ~(DWC3_DCFG_SPEED_MASK);
/*
* WORKAROUND: DWC3 revision < 2.20a have an issue
* which would cause metastability state on Run/Stop
* bit if we try to force the IP to USB2-only mode.
*
* Because of that, we cannot configure the IP to any
* speed other than the SuperSpeed
*
* Refers to:
*
* STAR#9000525659: Clock Domain Crossing on DCTL in
* USB 2.0 Mode
*/
if (dwc->revision < DWC3_REVISION_220A) {
reg |= DWC3_DCFG_SUPERSPEED;
} else {
switch (speed) {
case USB_SPEED_LOW:
reg |= DWC3_DCFG_LOWSPEED;
break;
case USB_SPEED_FULL:
reg |= DWC3_DCFG_FULLSPEED;
break;
case USB_SPEED_HIGH:
reg |= DWC3_DCFG_HIGHSPEED;
break;
case USB_SPEED_SUPER:
reg |= DWC3_DCFG_SUPERSPEED;
break;
case USB_SPEED_SUPER_PLUS:
reg |= DWC3_DCFG_SUPERSPEED_PLUS;
break;
default:
dev_err(dwc->dev, "invalid speed (%d)\n", speed);
if (dwc->revision & DWC3_REVISION_IS_DWC31)
reg |= DWC3_DCFG_SUPERSPEED_PLUS;
else
reg |= DWC3_DCFG_SUPERSPEED;
}
}
dwc3_writel(dwc->regs, DWC3_DCFG, reg);
spin_unlock_irqrestore(&dwc->lock, flags);
}
static const struct usb_gadget_ops dwc3_gadget_ops = {
.get_frame = dwc3_gadget_get_frame,
.wakeup = dwc3_gadget_wakeup,
@ -1979,19 +2032,21 @@ static const struct usb_gadget_ops dwc3_gadget_ops = {
.pullup = dwc3_gadget_pullup,
.udc_start = dwc3_gadget_start,
.udc_stop = dwc3_gadget_stop,
.udc_set_speed = dwc3_gadget_set_speed,
};
/* -------------------------------------------------------------------------- */
static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 num)
static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 total)
{
struct dwc3_ep *dep;
u8 epnum;
INIT_LIST_HEAD(&dwc->gadget.ep_list);
for (epnum = 0; epnum < num; epnum++) {
for (epnum = 0; epnum < total; epnum++) {
bool direction = epnum & 1;
u8 num = epnum >> 1;
dep = kzalloc(sizeof(*dep), GFP_KERNEL);
if (!dep)
@ -2003,7 +2058,7 @@ static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 num)
dep->regs = dwc->regs + DWC3_DEP_BASE(epnum);
dwc->eps[epnum] = dep;
snprintf(dep->name, sizeof(dep->name), "ep%d%s", epnum >> 1,
snprintf(dep->name, sizeof(dep->name), "ep%u%s", num,
direction ? "in" : "out");
dep->endpoint.name = dep->name;
@ -2015,39 +2070,39 @@ static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 num)
spin_lock_init(&dep->lock);
if (epnum == 0 || epnum == 1) {
if (num == 0) {
usb_ep_set_maxpacket_limit(&dep->endpoint, 512);
dep->endpoint.maxburst = 1;
dep->endpoint.ops = &dwc3_gadget_ep0_ops;
if (!epnum)
if (!direction)
dwc->gadget.ep0 = &dep->endpoint;
} else if (direction) {
int mdwidth;
int kbytes;
int size;
int ret;
int num;
mdwidth = DWC3_MDWIDTH(dwc->hwparams.hwparams0);
/* MDWIDTH is represented in bits, we need it in bytes */
mdwidth /= 8;
size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(epnum >> 1));
size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(num));
size = DWC3_GTXFIFOSIZ_TXFDEF(size);
/* FIFO Depth is in MDWDITH bytes. Multiply */
size *= mdwidth;
num = size / 1024;
if (num == 0)
num = 1;
kbytes = size / 1024;
if (kbytes == 0)
kbytes = 1;
/*
* FIFO sizes account an extra MDWIDTH * (num + 1) bytes for
* FIFO sizes account an extra MDWIDTH * (kbytes + 1) bytes for
* internal overhead. We don't really know how these are used,
* but documentation say it exists.
*/
size -= mdwidth * (num + 1);
size /= num;
size -= mdwidth * (kbytes + 1);
size /= kbytes;
usb_ep_set_maxpacket_limit(&dep->endpoint, size);
@ -2073,7 +2128,7 @@ static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 num)
return ret;
}
if (epnum == 0 || epnum == 1) {
if (num == 0) {
dep->endpoint.caps.type_control = true;
} else {
dep->endpoint.caps.type_iso = true;
@ -2871,7 +2926,7 @@ static void dwc3_gadget_hibernation_interrupt(struct dwc3 *dwc,
{
unsigned int is_ss = evtinfo & BIT(4);
/**
/*
* WORKAROUND: DWC3 revison 2.20a with hibernation support
* have a known issue which can cause USB CV TD.9.23 to fail
* randomly.
@ -2943,20 +2998,12 @@ static void dwc3_process_event_entry(struct dwc3 *dwc,
{
trace_dwc3_event(event->raw, dwc);
/* Endpoint IRQ, handle it and return early */
if (event->type.is_devspec == 0) {
/* depevt */
return dwc3_endpoint_interrupt(dwc, &event->depevt);
}
switch (event->type.type) {
case DWC3_EVENT_TYPE_DEV:
if (!event->type.is_devspec)
dwc3_endpoint_interrupt(dwc, &event->depevt);
else if (event->type.type == DWC3_EVENT_TYPE_DEV)
dwc3_gadget_interrupt(dwc, &event->devt);
break;
/* REVISIT what to do with Carkit and I2C events ? */
default:
else
dev_err(dwc->dev, "UNKNOWN IRQ type %d\n", event->raw);
}
}
static irqreturn_t dwc3_process_event_buf(struct dwc3_event_buffer *evt)
@ -3110,7 +3157,7 @@ static int dwc3_gadget_get_irq(struct dwc3 *dwc)
}
/**
* dwc3_gadget_init - Initializes gadget related registers
* dwc3_gadget_init - initializes gadget related registers
* @dwc: pointer to our controller context structure
*
* Returns 0 on success otherwise negative errno.

22
drivers/usb/dwc3/gadget.h
View File

@ -1,4 +1,4 @@
/**
/*
* gadget.h - DesignWare USB3 DRD Gadget Header
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
@ -60,11 +60,25 @@ struct dwc3;
#define to_dwc3_request(r) (container_of(r, struct dwc3_request, request))
/**
* next_request - gets the next request on the given list
* @list: the request list to operate on
*
* Caller should take care of locking. This function return %NULL or the first
* request available on @list.
*/
static inline struct dwc3_request *next_request(struct list_head *list)
{
return list_first_entry_or_null(list, struct dwc3_request, list);
}
/**
* dwc3_gadget_move_started_request - move @req to the started_list
* @req: the request to be moved
*
* Caller should take care of locking. This function will move @req from its
* current list to the endpoint's started_list.
*/
static inline void dwc3_gadget_move_started_request(struct dwc3_request *req)
{
struct dwc3_ep *dep = req->dep;
@ -87,10 +101,10 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol);
/**
* dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
* @dwc: DesignWare USB3 Pointer
* @number: DWC endpoint number
* @dep: dwc3 endpoint
*
* Caller should take care of locking
* Caller should take care of locking. Returns the transfer resource
* index for a given endpoint.
*/
static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3_ep *dep)
{

28
drivers/usb/dwc3/trace.h
View File

@ -60,13 +60,15 @@ DECLARE_EVENT_CLASS(dwc3_log_event,
TP_STRUCT__entry(
__field(u32, event)
__field(u32, ep0state)
__dynamic_array(char, str, DWC3_MSG_MAX)
),
TP_fast_assign(
__entry->event = event;
__entry->ep0state = dwc->ep0state;
),
TP_printk("event (%08x): %s", __entry->event,
dwc3_decode_event(__entry->event, __entry->ep0state))
dwc3_decode_event(__get_str(str), __entry->event,
__entry->ep0state))
);
DEFINE_EVENT(dwc3_log_event, dwc3_event,
@ -83,6 +85,7 @@ DECLARE_EVENT_CLASS(dwc3_log_ctrl,
__field(__u16, wValue)
__field(__u16, wIndex)
__field(__u16, wLength)
__dynamic_array(char, str, DWC3_MSG_MAX)
),
TP_fast_assign(
__entry->bRequestType = ctrl->bRequestType;
@ -91,10 +94,9 @@ DECLARE_EVENT_CLASS(dwc3_log_ctrl,
__entry->wIndex = le16_to_cpu(ctrl->wIndex);
__entry->wLength = le16_to_cpu(ctrl->wLength);
),
TP_printk("bRequestType %02x bRequest %02x wValue %04x wIndex %04x wLength %d",
__entry->bRequestType, __entry->bRequest,
__entry->wValue, __entry->wIndex,
__entry->wLength
TP_printk("%s", dwc3_decode_ctrl(__get_str(str), __entry->bRequestType,
__entry->bRequest, __entry->wValue,
__entry->wIndex, __entry->wLength)
)
);
@ -107,7 +109,7 @@ DECLARE_EVENT_CLASS(dwc3_log_request,
TP_PROTO(struct dwc3_request *req),
TP_ARGS(req),
TP_STRUCT__entry(
__dynamic_array(char, name, DWC3_MSG_MAX)
__string(name, req->dep->name)
__field(struct dwc3_request *, req)
__field(unsigned, actual)
__field(unsigned, length)
@ -117,7 +119,7 @@ DECLARE_EVENT_CLASS(dwc3_log_request,
__field(int, no_interrupt)
),
TP_fast_assign(
snprintf(__get_str(name), DWC3_MSG_MAX, "%s", req->dep->name);
__assign_str(name, req->dep->name);
__entry->req = req;
__entry->actual = req->request.actual;
__entry->length = req->request.length;
@ -190,7 +192,7 @@ DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd,
struct dwc3_gadget_ep_cmd_params *params, int cmd_status),
TP_ARGS(dep, cmd, params, cmd_status),
TP_STRUCT__entry(
__dynamic_array(char, name, DWC3_MSG_MAX)
__string(name, dep->name)
__field(unsigned int, cmd)
__field(u32, param0)
__field(u32, param1)
@ -198,7 +200,7 @@ DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd,
__field(int, cmd_status)
),
TP_fast_assign(
snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name);
__assign_str(name, dep->name);
__entry->cmd = cmd;
__entry->param0 = params->param0;
__entry->param1 = params->param1;
@ -223,7 +225,7 @@ DECLARE_EVENT_CLASS(dwc3_log_trb,
TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb),
TP_ARGS(dep, trb),
TP_STRUCT__entry(
__dynamic_array(char, name, DWC3_MSG_MAX)
__string(name, dep->name)
__field(struct dwc3_trb *, trb)
__field(u32, allocated)
__field(u32, queued)
@ -234,7 +236,7 @@ DECLARE_EVENT_CLASS(dwc3_log_trb,
__field(u32, type)
),
TP_fast_assign(
snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name);
__assign_str(name, dep->name);
__entry->trb = trb;
__entry->allocated = dep->allocated_requests;
__entry->queued = dep->queued_requests;
@ -291,7 +293,7 @@ DECLARE_EVENT_CLASS(dwc3_log_ep,
TP_PROTO(struct dwc3_ep *dep),
TP_ARGS(dep),
TP_STRUCT__entry(
__dynamic_array(char, name, DWC3_MSG_MAX)
__string(name, dep->name)
__field(unsigned, maxpacket)
__field(unsigned, maxpacket_limit)
__field(unsigned, max_streams)
@ -302,7 +304,7 @@ DECLARE_EVENT_CLASS(dwc3_log_ep,
__field(u8, trb_dequeue)
),
TP_fast_assign(
snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name);
__assign_str(name, dep->name);
__entry->maxpacket = dep->endpoint.maxpacket;
__entry->maxpacket_limit = dep->endpoint.maxpacket_limit;
__entry->max_streams = dep->endpoint.max_streams;

12
drivers/usb/dwc3/ulpi.c
View File

@ -41,6 +41,12 @@ static int dwc3_ulpi_read(struct device *dev, u8 addr)
u32 reg;
int ret;
reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
if (reg & DWC3_GUSB2PHYCFG_SUSPHY) {
reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
}
reg = DWC3_GUSB2PHYACC_NEWREGREQ | DWC3_ULPI_ADDR(addr);
dwc3_writel(dwc->regs, DWC3_GUSB2PHYACC(0), reg);
@ -58,6 +64,12 @@ static int dwc3_ulpi_write(struct device *dev, u8 addr, u8 val)
struct dwc3 *dwc = dev_get_drvdata(dev);
u32 reg;
reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
if (reg & DWC3_GUSB2PHYCFG_SUSPHY) {
reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
}
reg = DWC3_GUSB2PHYACC_NEWREGREQ | DWC3_ULPI_ADDR(addr);
reg |= DWC3_GUSB2PHYACC_WRITE | val;
dwc3_writel(dwc->regs, DWC3_GUSB2PHYACC(0), reg);

31
drivers/usb/gadget/Kconfig
View File

@ -41,7 +41,7 @@ menuconfig USB_GADGET
don't have this kind of hardware (except maybe inside Linux PDAs).
For more information, see <http://www.linux-usb.org/gadget> and
the kernel DocBook documentation for this API.
the kernel documentation for this API.
if USB_GADGET
@ -158,6 +158,9 @@ config USB_U_SERIAL
config USB_U_ETHER
tristate
config USB_U_AUDIO
tristate
config USB_F_SERIAL
tristate
@ -191,6 +194,9 @@ config USB_F_FS
config USB_F_UAC1
tristate
config USB_F_UAC1_LEGACY
tristate
config USB_F_UAC2
tristate
@ -368,12 +374,30 @@ config USB_CONFIGFS_F_UAC1
depends on SND
select USB_LIBCOMPOSITE
select SND_PCM
select USB_U_AUDIO
select USB_F_UAC1
help
This Audio function implements 1 AudioControl interface,
1 AudioStreaming Interface each for USB-OUT and USB-IN.
This driver requires a real Audio codec to be present
on the device.
This driver doesn't expect any real Audio codec to be present
on the device - the audio streams are simply sinked to and
sourced from a virtual ALSA sound card created. The user-space
application may choose to do whatever it wants with the data
received from the USB Host and choose to provide whatever it
wants as audio data to the USB Host.
config USB_CONFIGFS_F_UAC1_LEGACY
bool "Audio Class 1.0 (legacy implementation)"
depends on USB_CONFIGFS
depends on SND
select USB_LIBCOMPOSITE
select SND_PCM
select USB_F_UAC1_LEGACY
help
This Audio function implements 1 AudioControl interface,
1 AudioStreaming Interface each for USB-OUT and USB-IN.
This is a legacy driver and requires a real Audio codec
to be present on the device.
config USB_CONFIGFS_F_UAC2
bool "Audio Class 2.0"
@ -381,6 +405,7 @@ config USB_CONFIGFS_F_UAC2
depends on SND
select USB_LIBCOMPOSITE
select SND_PCM
select USB_U_AUDIO
select USB_F_UAC2
help
This Audio function is compatible with USB Audio Class

57
drivers/usb/gadget/composite.c
View File

@ -610,7 +610,6 @@ static int count_configs(struct usb_composite_dev *cdev, unsigned type)
static int bos_desc(struct usb_composite_dev *cdev)
{
struct usb_ext_cap_descriptor *usb_ext;
struct usb_ss_cap_descriptor *ss_cap;
struct usb_dcd_config_params dcd_config_params;
struct usb_bos_descriptor *bos = cdev->req->buf;
@ -636,29 +635,35 @@ static int bos_desc(struct usb_composite_dev *cdev)
* The Superspeed USB Capability descriptor shall be implemented by all
* SuperSpeed devices.
*/
ss_cap = cdev->req->buf + le16_to_cpu(bos->wTotalLength);
bos->bNumDeviceCaps++;
le16_add_cpu(&bos->wTotalLength, USB_DT_USB_SS_CAP_SIZE);
ss_cap->bLength = USB_DT_USB_SS_CAP_SIZE;
ss_cap->bDescriptorType = USB_DT_DEVICE_CAPABILITY;
ss_cap->bDevCapabilityType = USB_SS_CAP_TYPE;
ss_cap->bmAttributes = 0; /* LTM is not supported yet */
ss_cap->wSpeedSupported = cpu_to_le16(USB_LOW_SPEED_OPERATION |
USB_FULL_SPEED_OPERATION |
USB_HIGH_SPEED_OPERATION |
USB_5GBPS_OPERATION);
ss_cap->bFunctionalitySupport = USB_LOW_SPEED_OPERATION;
if (gadget_is_superspeed(cdev->gadget)) {
struct usb_ss_cap_descriptor *ss_cap;
/* Get Controller configuration */
if (cdev->gadget->ops->get_config_params)
cdev->gadget->ops->get_config_params(&dcd_config_params);
else {
dcd_config_params.bU1devExitLat = USB_DEFAULT_U1_DEV_EXIT_LAT;
dcd_config_params.bU2DevExitLat =
cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT);
ss_cap = cdev->req->buf + le16_to_cpu(bos->wTotalLength);
bos->bNumDeviceCaps++;
le16_add_cpu(&bos->wTotalLength, USB_DT_USB_SS_CAP_SIZE);
ss_cap->bLength = USB_DT_USB_SS_CAP_SIZE;
ss_cap->bDescriptorType = USB_DT_DEVICE_CAPABILITY;
ss_cap->bDevCapabilityType = USB_SS_CAP_TYPE;
ss_cap->bmAttributes = 0; /* LTM is not supported yet */
ss_cap->wSpeedSupported = cpu_to_le16(USB_LOW_SPEED_OPERATION |
USB_FULL_SPEED_OPERATION |
USB_HIGH_SPEED_OPERATION |
USB_5GBPS_OPERATION);
ss_cap->bFunctionalitySupport = USB_LOW_SPEED_OPERATION;
/* Get Controller configuration */
if (cdev->gadget->ops->get_config_params) {
cdev->gadget->ops->get_config_params(
&dcd_config_params);
} else {
dcd_config_params.bU1devExitLat =
USB_DEFAULT_U1_DEV_EXIT_LAT;
dcd_config_params.bU2DevExitLat =
cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT);
}
ss_cap->bU1devExitLat = dcd_config_params.bU1devExitLat;
ss_cap->bU2DevExitLat = dcd_config_params.bU2DevExitLat;
}
ss_cap->bU1devExitLat = dcd_config_params.bU1devExitLat;
ss_cap->bU2DevExitLat = dcd_config_params.bU2DevExitLat;
/* The SuperSpeedPlus USB Device Capability descriptor */
if (gadget_is_superspeed_plus(cdev->gadget)) {
@ -1602,7 +1607,10 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
cdev->desc.bcdUSB = cpu_to_le16(0x0210);
}
} else {
cdev->desc.bcdUSB = cpu_to_le16(0x0200);
if (gadget->lpm_capable)
cdev->desc.bcdUSB = cpu_to_le16(0x0201);
else
cdev->desc.bcdUSB = cpu_to_le16(0x0200);
}
value = min(w_length, (u16) sizeof cdev->desc);
@ -1633,7 +1641,8 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
value = min(w_length, (u16) value);
break;
case USB_DT_BOS:
if (gadget_is_superspeed(gadget)) {
if (gadget_is_superspeed(gadget) ||
gadget->lpm_capable) {
value = bos_desc(cdev);
value = min(w_length, (u16) value);
}

14
drivers/usb/gadget/configfs.c
View File

@ -738,7 +738,7 @@ static inline struct gadget_info *os_desc_item_to_gadget_info(
static ssize_t os_desc_use_show(struct config_item *item, char *page)
{
return sprintf(page, "%d",
return sprintf(page, "%d\n",
os_desc_item_to_gadget_info(item)->use_os_desc);
}
@ -762,7 +762,7 @@ static ssize_t os_desc_use_store(struct config_item *item, const char *page,
static ssize_t os_desc_b_vendor_code_show(struct config_item *item, char *page)
{
return sprintf(page, "%d",
return sprintf(page, "0x%02x\n",
os_desc_item_to_gadget_info(item)->b_vendor_code);
}
@ -787,9 +787,13 @@ static ssize_t os_desc_b_vendor_code_store(struct config_item *item,
static ssize_t os_desc_qw_sign_show(struct config_item *item, char *page)
{
struct gadget_info *gi = os_desc_item_to_gadget_info(item);
int res;
memcpy(page, gi->qw_sign, OS_STRING_QW_SIGN_LEN);
return OS_STRING_QW_SIGN_LEN;
res = utf16s_to_utf8s((wchar_t *) gi->qw_sign, OS_STRING_QW_SIGN_LEN,
UTF16_LITTLE_ENDIAN, page, PAGE_SIZE - 1);
page[res++] = '\n';
return res;
}
static ssize_t os_desc_qw_sign_store(struct config_item *item, const char *page,
@ -900,7 +904,7 @@ static inline struct usb_os_desc_ext_prop
static ssize_t ext_prop_type_show(struct config_item *item, char *page)
{
return sprintf(page, "%d", to_usb_os_desc_ext_prop(item)->type);
return sprintf(page, "%d\n", to_usb_os_desc_ext_prop(item)->type);
}
static ssize_t ext_prop_type_store(struct config_item *item,

5
drivers/usb/gadget/function/Makefile
View File

@ -32,8 +32,11 @@ usb_f_mass_storage-y := f_mass_storage.o storage_common.o
obj-$(CONFIG_USB_F_MASS_STORAGE)+= usb_f_mass_storage.o
usb_f_fs-y := f_fs.o
obj-$(CONFIG_USB_F_FS) += usb_f_fs.o
usb_f_uac1-y := f_uac1.o u_uac1.o
obj-$(CONFIG_USB_U_AUDIO) += u_audio.o
usb_f_uac1-y := f_uac1.o
obj-$(CONFIG_USB_F_UAC1) += usb_f_uac1.o
usb_f_uac1_legacy-y := f_uac1_legacy.o u_uac1_legacy.o
obj-$(CONFIG_USB_F_UAC1_LEGACY) += usb_f_uac1_legacy.o
usb_f_uac2-y := f_uac2.o
obj-$(CONFIG_USB_F_UAC2) += usb_f_uac2.o
usb_f_uvc-y := f_uvc.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_configfs.o

110
drivers/usb/gadget/function/f_fs.c
View File

@ -127,7 +127,6 @@ struct ffs_ep {
struct ffs_epfile {
/* Protects ep->ep and ep->req. */
struct mutex mutex;
wait_queue_head_t wait;
struct ffs_data *ffs;
struct ffs_ep *ep; /* P: ffs->eps_lock */
@ -889,7 +888,8 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
if (file->f_flags & O_NONBLOCK)
return -EAGAIN;
ret = wait_event_interruptible(epfile->wait, (ep = epfile->ep));
ret = wait_event_interruptible(
epfile->ffs->wait, (ep = epfile->ep));
if (ret)
return -EINTR;
}
@ -1189,6 +1189,7 @@ static long ffs_epfile_ioctl(struct file *file, unsigned code,
unsigned long value)
{
struct ffs_epfile *epfile = file->private_data;
struct ffs_ep *ep;
int ret;
ENTER();
@ -1196,50 +1197,65 @@ static long ffs_epfile_ioctl(struct file *file, unsigned code,
if (WARN_ON(epfile->ffs->state != FFS_ACTIVE))
return -ENODEV;
/* Wait for endpoint to be enabled */
ep = epfile->ep;
if (!ep) {
if (file->f_flags & O_NONBLOCK)
return -EAGAIN;
ret = wait_event_interruptible(
epfile->ffs->wait, (ep = epfile->ep));
if (ret)
return -EINTR;
}
spin_lock_irq(&epfile->ffs->eps_lock);
if (likely(epfile->ep)) {
switch (code) {
case FUNCTIONFS_FIFO_STATUS:
ret = usb_ep_fifo_status(epfile->ep->ep);
break;
case FUNCTIONFS_FIFO_FLUSH:
usb_ep_fifo_flush(epfile->ep->ep);
ret = 0;
break;
case FUNCTIONFS_CLEAR_HALT:
ret = usb_ep_clear_halt(epfile->ep->ep);
break;
case FUNCTIONFS_ENDPOINT_REVMAP:
ret = epfile->ep->num;
break;
case FUNCTIONFS_ENDPOINT_DESC:
{
int desc_idx;
struct usb_endpoint_descriptor *desc;
switch (epfile->ffs->gadget->speed) {
case USB_SPEED_SUPER:
desc_idx = 2;
break;
case USB_SPEED_HIGH:
desc_idx = 1;
break;
default:
desc_idx = 0;
}
desc = epfile->ep->descs[desc_idx];
/* In the meantime, endpoint got disabled or changed. */
if (epfile->ep != ep) {
spin_unlock_irq(&epfile->ffs->eps_lock);
return -ESHUTDOWN;
}
spin_unlock_irq(&epfile->ffs->eps_lock);
ret = copy_to_user((void *)value, desc, desc->bLength);
if (ret)
ret = -EFAULT;
return ret;
}
switch (code) {
case FUNCTIONFS_FIFO_STATUS:
ret = usb_ep_fifo_status(epfile->ep->ep);
break;
case FUNCTIONFS_FIFO_FLUSH:
usb_ep_fifo_flush(epfile->ep->ep);
ret = 0;
break;
case FUNCTIONFS_CLEAR_HALT:
ret = usb_ep_clear_halt(epfile->ep->ep);
break;
case FUNCTIONFS_ENDPOINT_REVMAP:
ret = epfile->ep->num;
break;
case FUNCTIONFS_ENDPOINT_DESC:
{
int desc_idx;
struct usb_endpoint_descriptor *desc;
switch (epfile->ffs->gadget->speed) {
case USB_SPEED_SUPER:
desc_idx = 2;
break;
case USB_SPEED_HIGH:
desc_idx = 1;
break;
default:
ret = -ENOTTY;
desc_idx = 0;
}
} else {
ret = -ENODEV;
desc = epfile->ep->descs[desc_idx];
spin_unlock_irq(&epfile->ffs->eps_lock);
ret = copy_to_user((void *)value, desc, desc->bLength);
if (ret)
ret = -EFAULT;
return ret;
}
default:
ret = -ENOTTY;
}
spin_unlock_irq(&epfile->ffs->eps_lock);
@ -1593,7 +1609,8 @@ static void ffs_data_put(struct ffs_data *ffs)
pr_info("%s(): freeing\n", __func__);
ffs_data_clear(ffs);
BUG_ON(waitqueue_active(&ffs->ev.waitq) ||
waitqueue_active(&ffs->ep0req_completion.wait));
waitqueue_active(&ffs->ep0req_completion.wait) ||
waitqueue_active(&ffs->wait));
kfree(ffs->dev_name);
kfree(ffs);
}
@ -1640,6 +1657,7 @@ static struct ffs_data *ffs_data_new(void)
mutex_init(&ffs->mutex);
spin_lock_init(&ffs->eps_lock);
init_waitqueue_head(&ffs->ev.waitq);
init_waitqueue_head(&ffs->wait);
init_completion(&ffs->ep0req_completion);
/* XXX REVISIT need to update it in some places, or do we? */
@ -1761,7 +1779,6 @@ static int ffs_epfiles_create(struct ffs_data *ffs)
for (i = 1; i <= count; ++i, ++epfile) {
epfile->ffs = ffs;
mutex_init(&epfile->mutex);
init_waitqueue_head(&epfile->wait);
if (ffs->user_flags & FUNCTIONFS_VIRTUAL_ADDR)
sprintf(epfile->name, "ep%02x", ffs->eps_addrmap[i]);
else
@ -1786,8 +1803,7 @@ static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count)
ENTER();
for (; count; --count, ++epfile) {
BUG_ON(mutex_is_locked(&epfile->mutex) ||
waitqueue_active(&epfile->wait));
BUG_ON(mutex_is_locked(&epfile->mutex));
if (epfile->dentry) {
d_delete(epfile->dentry);
dput(epfile->dentry);
@ -1874,11 +1890,11 @@ static int ffs_func_eps_enable(struct ffs_function *func)
break;
}
wake_up(&epfile->wait);
++ep;
++epfile;
}
wake_up_interruptible(&ffs->wait);
spin_unlock_irqrestore(&func->ffs->eps_lock, flags);
return ret;

448
drivers/usb/gadget/function/f_mass_storage.c
View File

@ -260,12 +260,13 @@ struct fsg_common {
struct usb_gadget *gadget;
struct usb_composite_dev *cdev;
struct fsg_dev *fsg, *new_fsg;
wait_queue_head_t io_wait;
wait_queue_head_t fsg_wait;
/* filesem protects: backing files in use */
struct rw_semaphore filesem;
/* lock protects: state, all the req_busy's */
/* lock protects: state and thread_task */
spinlock_t lock;
struct usb_ep *ep0; /* Copy of gadget->ep0 */
@ -303,7 +304,6 @@ struct fsg_common {
unsigned int running:1;
unsigned int sysfs:1;
int thread_wakeup_needed;
struct completion thread_notifier;
struct task_struct *thread_task;
@ -355,7 +355,7 @@ typedef void (*fsg_routine_t)(struct fsg_dev *);
static int exception_in_progress(struct fsg_common *common)
{
return common->state > FSG_STATE_IDLE;
return common->state > FSG_STATE_NORMAL;
}
/* Make bulk-out requests be divisible by the maxpacket size */
@ -393,20 +393,6 @@ static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep)
/* These routines may be called in process context or in_irq */
/* Caller must hold fsg->lock */
static void wakeup_thread(struct fsg_common *common)
{
/*
* Ensure the reading of thread_wakeup_needed
* and the writing of bh->state are completed
*/
smp_mb();
/* Tell the main thread that something has happened */
common->thread_wakeup_needed = 1;
if (common->thread_task)
wake_up_process(common->thread_task);
}
static void raise_exception(struct fsg_common *common, enum fsg_state new_state)
{
unsigned long flags;
@ -460,13 +446,9 @@ static void bulk_in_complete(struct usb_ep *ep, struct usb_request *req)
if (req->status == -ECONNRESET) /* Request was cancelled */
usb_ep_fifo_flush(ep);
/* Hold the lock while we update the request and buffer states */
smp_wmb();
spin_lock(&common->lock);
bh->inreq_busy = 0;
bh->state = BUF_STATE_EMPTY;
wakeup_thread(common);
spin_unlock(&common->lock);
/* Synchronize with the smp_load_acquire() in sleep_thread() */
smp_store_release(&bh->state, BUF_STATE_EMPTY);
wake_up(&common->io_wait);
}
static void bulk_out_complete(struct usb_ep *ep, struct usb_request *req)
@ -481,13 +463,9 @@ static void bulk_out_complete(struct usb_ep *ep, struct usb_request *req)
if (req->status == -ECONNRESET) /* Request was cancelled */
usb_ep_fifo_flush(ep);
/* Hold the lock while we update the request and buffer states */
smp_wmb();
spin_lock(&common->lock);
bh->outreq_busy = 0;
bh->state = BUF_STATE_FULL;
wakeup_thread(common);
spin_unlock(&common->lock);
/* Synchronize with the smp_load_acquire() in sleep_thread() */
smp_store_release(&bh->state, BUF_STATE_FULL);
wake_up(&common->io_wait);
}
static int _fsg_common_get_max_lun(struct fsg_common *common)
@ -532,7 +510,7 @@ static int fsg_setup(struct usb_function *f,
* and reinitialize our state.
*/
DBG(fsg, "bulk reset request\n");
raise_exception(fsg->common, FSG_STATE_RESET);
raise_exception(fsg->common, FSG_STATE_PROTOCOL_RESET);
return USB_GADGET_DELAYED_STATUS;
case US_BULK_GET_MAX_LUN:
@ -563,43 +541,39 @@ static int fsg_setup(struct usb_function *f,
/* All the following routines run in process context */
/* Use this for bulk or interrupt transfers, not ep0 */
static void start_transfer(struct fsg_dev *fsg, struct usb_ep *ep,
struct usb_request *req, int *pbusy,
enum fsg_buffer_state *state)
static int start_transfer(struct fsg_dev *fsg, struct usb_ep *ep,
struct usb_request *req)
{
int rc;
if (ep == fsg->bulk_in)
dump_msg(fsg, "bulk-in", req->buf, req->length);
spin_lock_irq(&fsg->common->lock);
*pbusy = 1;
*state = BUF_STATE_BUSY;
spin_unlock_irq(&fsg->common->lock);
rc = usb_ep_queue(ep, req, GFP_KERNEL);
if (rc == 0)
return; /* All good, we're done */
if (rc) {
*pbusy = 0;
*state = BUF_STATE_EMPTY;
/* We can't do much more than wait for a reset */
req->status = rc;
/* We can't do much more than wait for a reset */
/*
* Note: currently the net2280 driver fails zero-length
* submissions if DMA is enabled.
*/
if (rc != -ESHUTDOWN && !(rc == -EOPNOTSUPP && req->length == 0))
WARNING(fsg, "error in submission: %s --> %d\n", ep->name, rc);
/*
* Note: currently the net2280 driver fails zero-length
* submissions if DMA is enabled.
*/
if (rc != -ESHUTDOWN &&
!(rc == -EOPNOTSUPP && req->length == 0))
WARNING(fsg, "error in submission: %s --> %d\n",
ep->name, rc);
}
return rc;
}
static bool start_in_transfer(struct fsg_common *common, struct fsg_buffhd *bh)
{
if (!fsg_is_set(common))
return false;
start_transfer(common->fsg, common->fsg->bulk_in,
bh->inreq, &bh->inreq_busy, &bh->state);
bh->state = BUF_STATE_SENDING;
if (start_transfer(common->fsg, common->fsg->bulk_in, bh->inreq))
bh->state = BUF_STATE_EMPTY;
return true;
}
@ -607,37 +581,31 @@ static bool start_out_transfer(struct fsg_common *common, struct fsg_buffhd *bh)
{
if (!fsg_is_set(common))
return false;
start_transfer(common->fsg, common->fsg->bulk_out,
bh->outreq, &bh->outreq_busy, &bh->state);
bh->state = BUF_STATE_RECEIVING;
if (start_transfer(common->fsg, common->fsg->bulk_out, bh->outreq))
bh->state = BUF_STATE_FULL;
return true;
}
static int sleep_thread(struct fsg_common *common, bool can_freeze)
static int sleep_thread(struct fsg_common *common, bool can_freeze,
struct fsg_buffhd *bh)
{
int rc = 0;
int rc;
/* Wait until a signal arrives or we are woken up */
for (;;) {
if (can_freeze)
try_to_freeze();
set_current_state(TASK_INTERRUPTIBLE);
if (signal_pending(current)) {
rc = -EINTR;
break;
}
if (common->thread_wakeup_needed)
break;
schedule();
}
__set_current_state(TASK_RUNNING);
common->thread_wakeup_needed = 0;
/*
* Ensure the writing of thread_wakeup_needed
* and the reading of bh->state are completed
*/
smp_mb();
return rc;
/* Wait until a signal arrives or bh is no longer busy */
if (can_freeze)
/*
* synchronize with the smp_store_release(&bh->state) in
* bulk_in_complete() or bulk_out_complete()
*/
rc = wait_event_freezable(common->io_wait,
bh && smp_load_acquire(&bh->state) >=
BUF_STATE_EMPTY);
else
rc = wait_event_interruptible(common->io_wait,
bh && smp_load_acquire(&bh->state) >=
BUF_STATE_EMPTY);
return rc ? -EINTR : 0;
}
@ -697,11 +665,9 @@ static int do_read(struct fsg_common *common)
/* Wait for the next buffer to become available */
bh = common->next_buffhd_to_fill;
while (bh->state != BUF_STATE_EMPTY) {
rc = sleep_thread(common, false);
if (rc)
return rc;
}
rc = sleep_thread(common, false, bh);
if (rc)
return rc;
/*
* If we were asked to read past the end of file,
@ -878,84 +844,80 @@ static int do_write(struct fsg_common *common)
bh = common->next_buffhd_to_drain;
if (bh->state == BUF_STATE_EMPTY && !get_some_more)
break; /* We stopped early */
if (bh->state == BUF_STATE_FULL) {
smp_rmb();
common->next_buffhd_to_drain = bh->next;
bh->state = BUF_STATE_EMPTY;
/* Did something go wrong with the transfer? */
if (bh->outreq->status != 0) {
curlun->sense_data = SS_COMMUNICATION_FAILURE;
curlun->sense_data_info =
file_offset >> curlun->blkbits;
curlun->info_valid = 1;
break;
}
amount = bh->outreq->actual;
if (curlun->file_length - file_offset < amount) {
LERROR(curlun,
"write %u @ %llu beyond end %llu\n",
amount, (unsigned long long)file_offset,
(unsigned long long)curlun->file_length);
amount = curlun->file_length - file_offset;
}
/* Don't accept excess data. The spec doesn't say
* what to do in this case. We'll ignore the error.
*/
amount = min(amount, bh->bulk_out_intended_length);
/* Don't write a partial block */
amount = round_down(amount, curlun->blksize);
if (amount == 0)
goto empty_write;
/* Perform the write */
file_offset_tmp = file_offset;
nwritten = vfs_write(curlun->filp,
(char __user *)bh->buf,
amount, &file_offset_tmp);
VLDBG(curlun, "file write %u @ %llu -> %d\n", amount,
(unsigned long long)file_offset, (int)nwritten);
if (signal_pending(current))
return -EINTR; /* Interrupted! */
if (nwritten < 0) {
LDBG(curlun, "error in file write: %d\n",
(int)nwritten);
nwritten = 0;
} else if (nwritten < amount) {
LDBG(curlun, "partial file write: %d/%u\n",
(int)nwritten, amount);
nwritten = round_down(nwritten, curlun->blksize);
}
file_offset += nwritten;
amount_left_to_write -= nwritten;
common->residue -= nwritten;
/* If an error occurred, report it and its position */
if (nwritten < amount) {
curlun->sense_data = SS_WRITE_ERROR;
curlun->sense_data_info =
file_offset >> curlun->blkbits;
curlun->info_valid = 1;
break;
}
empty_write:
/* Did the host decide to stop early? */
if (bh->outreq->actual < bh->bulk_out_intended_length) {
common->short_packet_received = 1;
break;
}
continue;
}
/* Wait for something to happen */
rc = sleep_thread(common, false);
/* Wait for the data to be received */
rc = sleep_thread(common, false, bh);
if (rc)
return rc;
common->next_buffhd_to_drain = bh->next;
bh->state = BUF_STATE_EMPTY;
/* Did something go wrong with the transfer? */
if (bh->outreq->status != 0) {
curlun->sense_data = SS_COMMUNICATION_FAILURE;
curlun->sense_data_info =
file_offset >> curlun->blkbits;
curlun->info_valid = 1;
break;
}
amount = bh->outreq->actual;
if (curlun->file_length - file_offset < amount) {
LERROR(curlun, "write %u @ %llu beyond end %llu\n",
amount, (unsigned long long)file_offset,
(unsigned long long)curlun->file_length);
amount = curlun->file_length - file_offset;
}
/*
* Don't accept excess data. The spec doesn't say
* what to do in this case. We'll ignore the error.
*/
amount = min(amount, bh->bulk_out_intended_length);
/* Don't write a partial block */
amount = round_down(amount, curlun->blksize);
if (amount == 0)
goto empty_write;
/* Perform the write */
file_offset_tmp = file_offset;
nwritten = vfs_write(curlun->filp, (char __user *)bh->buf,
amount, &file_offset_tmp);
VLDBG(curlun, "file write %u @ %llu -> %d\n", amount,
(unsigned long long)file_offset, (int)nwritten);
if (signal_pending(current))
return -EINTR; /* Interrupted! */
if (nwritten < 0) {
LDBG(curlun, "error in file write: %d\n",
(int) nwritten);
nwritten = 0;
} else if (nwritten < amount) {
LDBG(curlun, "partial file write: %d/%u\n",
(int) nwritten, amount);
nwritten = round_down(nwritten, curlun->blksize);
}
file_offset += nwritten;
amount_left_to_write -= nwritten;
common->residue -= nwritten;
/* If an error occurred, report it and its position */
if (nwritten < amount) {
curlun->sense_data = SS_WRITE_ERROR;
curlun->sense_data_info =
file_offset >> curlun->blkbits;
curlun->info_valid = 1;
break;
}
empty_write:
/* Did the host decide to stop early? */
if (bh->outreq->actual < bh->bulk_out_intended_length) {
common->short_packet_received = 1;
break;
}
}
return -EIO; /* No default reply */
@ -1480,7 +1442,7 @@ static int wedge_bulk_in_endpoint(struct fsg_dev *fsg)
static int throw_away_data(struct fsg_common *common)
{
struct fsg_buffhd *bh;
struct fsg_buffhd *bh, *bh2;
u32 amount;
int rc;
@ -1488,26 +1450,10 @@ static int throw_away_data(struct fsg_common *common)
bh->state != BUF_STATE_EMPTY || common->usb_amount_left > 0;
bh = common->next_buffhd_to_drain) {
/* Throw away the data in a filled buffer */
if (bh->state == BUF_STATE_FULL) {
smp_rmb();
bh->state = BUF_STATE_EMPTY;
common->next_buffhd_to_drain = bh->next;
/* A short packet or an error ends everything */
if (bh->outreq->actual < bh->bulk_out_intended_length ||
bh->outreq->status != 0) {
raise_exception(common,
FSG_STATE_ABORT_BULK_OUT);
return -EINTR;
}
continue;
}
/* Try to submit another request if we need one */
bh = common->next_buffhd_to_fill;
if (bh->state == BUF_STATE_EMPTY
&& common->usb_amount_left > 0) {
bh2 = common->next_buffhd_to_fill;
if (bh2->state == BUF_STATE_EMPTY &&
common->usb_amount_left > 0) {
amount = min(common->usb_amount_left, FSG_BUFLEN);
/*
@ -1515,19 +1461,30 @@ static int throw_away_data(struct fsg_common *common)
* equal to the buffer size, which is divisible by
* the bulk-out maxpacket size.
*/
set_bulk_out_req_length(common, bh, amount);
if (!start_out_transfer(common, bh))
set_bulk_out_req_length(common, bh2, amount);
if (!start_out_transfer(common, bh2))
/* Dunno what to do if common->fsg is NULL */
return -EIO;
common->next_buffhd_to_fill = bh->next;
common->next_buffhd_to_fill = bh2->next;
common->usb_amount_left -= amount;
continue;
}
/* Otherwise wait for something to happen */
rc = sleep_thread(common, true);
/* Wait for the data to be received */
rc = sleep_thread(common, false, bh);
if (rc)
return rc;
/* Throw away the data in a filled buffer */
bh->state = BUF_STATE_EMPTY;
common->next_buffhd_to_drain = bh->next;
/* A short packet or an error ends everything */
if (bh->outreq->actual < bh->bulk_out_intended_length ||
bh->outreq->status != 0) {
raise_exception(common, FSG_STATE_ABORT_BULK_OUT);
return -EINTR;
}
}
return 0;
}
@ -1634,7 +1591,7 @@ static int finish_reply(struct fsg_common *common)
return rc;
}
static int send_status(struct fsg_common *common)
static void send_status(struct fsg_common *common)
{
struct fsg_lun *curlun = common->curlun;
struct fsg_buffhd *bh;
@ -1645,11 +1602,9 @@ static int send_status(struct fsg_common *common)
/* Wait for the next buffer to become available */
bh = common->next_buffhd_to_fill;
while (bh->state != BUF_STATE_EMPTY) {
rc = sleep_thread(common, true);
if (rc)
return rc;
}
rc = sleep_thread(common, false, bh);
if (rc)
return;
if (curlun) {
sd = curlun->sense_data;
@ -1683,10 +1638,10 @@ static int send_status(struct fsg_common *common)
bh->inreq->zero = 0;
if (!start_in_transfer(common, bh))
/* Don't know what to do if common->fsg is NULL */
return -EIO;
return;
common->next_buffhd_to_fill = bh->next;
return 0;
return;
}
@ -1848,11 +1803,10 @@ static int do_scsi_command(struct fsg_common *common)
/* Wait for the next buffer to become available for data or status */
bh = common->next_buffhd_to_fill;
common->next_buffhd_to_drain = bh;
while (bh->state != BUF_STATE_EMPTY) {
rc = sleep_thread(common, true);
if (rc)
return rc;
}
rc = sleep_thread(common, false, bh);
if (rc)
return rc;
common->phase_error = 0;
common->short_packet_received = 0;
@ -2195,11 +2149,9 @@ static int get_next_command(struct fsg_common *common)
/* Wait for the next buffer to become available */
bh = common->next_buffhd_to_fill;
while (bh->state != BUF_STATE_EMPTY) {
rc = sleep_thread(common, true);
if (rc)
return rc;
}
rc = sleep_thread(common, true, bh);
if (rc)
return rc;
/* Queue a request to read a Bulk-only CBW */
set_bulk_out_req_length(common, bh, US_BULK_CB_WRAP_LEN);
@ -2214,12 +2166,10 @@ static int get_next_command(struct fsg_common *common)
*/
/* Wait for the CBW to arrive */
while (bh->state != BUF_STATE_FULL) {
rc = sleep_thread(common, true);
if (rc)
return rc;
}
smp_rmb();
rc = sleep_thread(common, true, bh);
if (rc)
return rc;
rc = fsg_is_set(common) ? received_cbw(common->fsg, bh) : -EIO;
bh->state = BUF_STATE_EMPTY;
@ -2371,9 +2321,11 @@ static void handle_exception(struct fsg_common *common)
if (!sig)
break;
if (sig != SIGUSR1) {
spin_lock_irq(&common->lock);
if (common->state < FSG_STATE_EXIT)
DBG(common, "Main thread exiting on signal\n");
raise_exception(common, FSG_STATE_EXIT);
common->state = FSG_STATE_EXIT;
spin_unlock_irq(&common->lock);
}
}
@ -2381,23 +2333,14 @@ static void handle_exception(struct fsg_common *common)
if (likely(common->fsg)) {
for (i = 0; i < common->fsg_num_buffers; ++i) {
bh = &common->buffhds[i];
if (bh->inreq_busy)
if (bh->state == BUF_STATE_SENDING)
usb_ep_dequeue(common->fsg->bulk_in, bh->inreq);
if (bh->outreq_busy)
if (bh->state == BUF_STATE_RECEIVING)
usb_ep_dequeue(common->fsg->bulk_out,
bh->outreq);
}
/* Wait until everything is idle */
for (;;) {
int num_active = 0;
for (i = 0; i < common->fsg_num_buffers; ++i) {
bh = &common->buffhds[i];
num_active += bh->inreq_busy + bh->outreq_busy;
}
if (num_active == 0)
break;
if (sleep_thread(common, true))
/* Wait for a transfer to become idle */
if (sleep_thread(common, false, bh))
return;
}
@ -2422,10 +2365,9 @@ static void handle_exception(struct fsg_common *common)
common->next_buffhd_to_drain = &common->buffhds[0];
exception_req_tag = common->exception_req_tag;
old_state = common->state;
common->state = FSG_STATE_NORMAL;
if (old_state == FSG_STATE_ABORT_BULK_OUT)
common->state = FSG_STATE_STATUS_PHASE;
else {
if (old_state != FSG_STATE_ABORT_BULK_OUT) {
for (i = 0; i < ARRAY_SIZE(common->luns); ++i) {
curlun = common->luns[i];
if (!curlun)
@ -2436,21 +2378,19 @@ static void handle_exception(struct fsg_common *common)
curlun->sense_data_info = 0;
curlun->info_valid = 0;
}
common->state = FSG_STATE_IDLE;
}
spin_unlock_irq(&common->lock);
/* Carry out any extra actions required for the exception */
switch (old_state) {
case FSG_STATE_ABORT_BULK_OUT:
send_status(common);
spin_lock_irq(&common->lock);
if (common->state == FSG_STATE_STATUS_PHASE)
common->state = FSG_STATE_IDLE;
spin_unlock_irq(&common->lock);
case FSG_STATE_NORMAL:
break;
case FSG_STATE_RESET:
case FSG_STATE_ABORT_BULK_OUT:
send_status(common);
break;
case FSG_STATE_PROTOCOL_RESET:
/*
* In case we were forced against our will to halt a
* bulk endpoint, clear the halt now. (The SuperH UDC
@ -2483,19 +2423,13 @@ static void handle_exception(struct fsg_common *common)
break;
case FSG_STATE_EXIT:
case FSG_STATE_TERMINATED:
do_set_interface(common, NULL); /* Free resources */
spin_lock_irq(&common->lock);
common->state = FSG_STATE_TERMINATED; /* Stop the thread */
spin_unlock_irq(&common->lock);
break;
case FSG_STATE_INTERFACE_CHANGE:
case FSG_STATE_DISCONNECT:
case FSG_STATE_COMMAND_PHASE:
case FSG_STATE_DATA_PHASE:
case FSG_STATE_STATUS_PHASE:
case FSG_STATE_IDLE:
case FSG_STATE_TERMINATED:
break;
}
}
@ -2534,33 +2468,17 @@ static int fsg_main_thread(void *common_)
}
if (!common->running) {
sleep_thread(common, true);
sleep_thread(common, true, NULL);
continue;
}
if (get_next_command(common))
if (get_next_command(common) || exception_in_progress(common))
continue;
spin_lock_irq(&common->lock);
if (!exception_in_progress(common))
common->state = FSG_STATE_DATA_PHASE;
spin_unlock_irq(&common->lock);
if (do_scsi_command(common) || finish_reply(common))
if (do_scsi_command(common) || exception_in_progress(common))
continue;
spin_lock_irq(&common->lock);
if (!exception_in_progress(common))
common->state = FSG_STATE_STATUS_PHASE;
spin_unlock_irq(&common->lock);
if (send_status(common))
if (finish_reply(common) || exception_in_progress(common))
continue;
spin_lock_irq(&common->lock);
if (!exception_in_progress(common))
common->state = FSG_STATE_IDLE;
spin_unlock_irq(&common->lock);
send_status(common);
}
spin_lock_irq(&common->lock);
@ -2680,6 +2598,7 @@ static struct fsg_common *fsg_common_setup(struct fsg_common *common)
spin_lock_init(&common->lock);
kref_init(&common->ref);
init_completion(&common->thread_notifier);
init_waitqueue_head(&common->io_wait);
init_waitqueue_head(&common->fsg_wait);
common->state = FSG_STATE_TERMINATED;
memset(common->luns, 0, sizeof(common->luns));
@ -2981,7 +2900,6 @@ static void fsg_common_release(struct kref *ref)
if (common->state != FSG_STATE_TERMINATED) {
raise_exception(common, FSG_STATE_EXIT);
wait_for_completion(&common->thread_notifier);
common->thread_task = NULL;
}
for (i = 0; i < ARRAY_SIZE(common->luns); ++i) {
@ -3030,11 +2948,11 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
}
if (!common->thread_task) {
common->state = FSG_STATE_IDLE;
common->state = FSG_STATE_NORMAL;
common->thread_task =
kthread_create(fsg_main_thread, common, "file-storage");
if (IS_ERR(common->thread_task)) {
int ret = PTR_ERR(common->thread_task);
ret = PTR_ERR(common->thread_task);
common->thread_task = NULL;
common->state = FSG_STATE_TERMINATED;
return ret;

912
drivers/usb/gadget/function/f_uac1.c
View File

File diff suppressed because it is too large Load Diff

1021
drivers/usb/gadget/function/f_uac1_legacy.c Normal file
View File

File diff suppressed because it is too large Load Diff

805
drivers/usb/gadget/function/f_uac2.c
View File

File diff suppressed because it is too large Load Diff

18
drivers/usb/gadget/function/storage_common.h
View File

@ -133,9 +133,10 @@ static inline bool fsg_lun_is_open(struct fsg_lun *curlun)
#define FSG_MAX_LUNS 16
enum fsg_buffer_state {
BUF_STATE_SENDING = -2,
BUF_STATE_RECEIVING,
BUF_STATE_EMPTY = 0,
BUF_STATE_FULL,
BUF_STATE_BUSY
BUF_STATE_FULL
};
struct fsg_buffhd {
@ -151,23 +152,14 @@ struct fsg_buffhd {
unsigned int bulk_out_intended_length;
struct usb_request *inreq;
int inreq_busy;
struct usb_request *outreq;
int outreq_busy;
};
enum fsg_state {
/* This one isn't used anywhere */
FSG_STATE_COMMAND_PHASE = -10,
FSG_STATE_DATA_PHASE,
FSG_STATE_STATUS_PHASE,
FSG_STATE_IDLE = 0,
FSG_STATE_NORMAL,
FSG_STATE_ABORT_BULK_OUT,
FSG_STATE_RESET,
FSG_STATE_INTERFACE_CHANGE,
FSG_STATE_PROTOCOL_RESET,
FSG_STATE_CONFIG_CHANGE,
FSG_STATE_DISCONNECT,
FSG_STATE_EXIT,
FSG_STATE_TERMINATED
};

662
drivers/usb/gadget/function/u_audio.c Normal file
View File

@ -0,0 +1,662 @@
/*
* u_audio.c -- interface to USB gadget "ALSA sound card" utilities
*
* Copyright (C) 2016
* Author: Ruslan Bilovol <ruslan.bilovol@gmail.com>
*
* Sound card implementation was cut-and-pasted with changes
* from f_uac2.c and has:
* Copyright (C) 2011
* Yadwinder Singh (yadi.brar01@gmail.com)
* Jaswinder Singh (jaswinder.singh@linaro.org)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include "u_audio.h"
#define BUFF_SIZE_MAX (PAGE_SIZE * 16)
#define PRD_SIZE_MAX PAGE_SIZE
#define MIN_PERIODS 4
struct uac_req {
struct uac_rtd_params *pp; /* parent param */
struct usb_request *req;
};
/* Runtime data params for one stream */
struct uac_rtd_params {
struct snd_uac_chip *uac; /* parent chip */
bool ep_enabled; /* if the ep is enabled */
/* Size of the ring buffer */
size_t dma_bytes;
unsigned char *dma_area;
struct snd_pcm_substream *ss;
/* Ring buffer */
ssize_t hw_ptr;
void *rbuf;
size_t period_size;
unsigned max_psize; /* MaxPacketSize of endpoint */
struct uac_req *ureq;
spinlock_t lock;
};
struct snd_uac_chip {
struct g_audio *audio_dev;
struct uac_rtd_params p_prm;
struct uac_rtd_params c_prm;
struct snd_card *card;
struct snd_pcm *pcm;
/* timekeeping for the playback endpoint */
unsigned int p_interval;
unsigned int p_residue;
/* pre-calculated values for playback iso completion */
unsigned int p_pktsize;
unsigned int p_pktsize_residue;
unsigned int p_framesize;
};
static struct snd_pcm_hardware uac_pcm_hardware = {
.info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER
| SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID
| SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
.rates = SNDRV_PCM_RATE_CONTINUOUS,
.periods_max = BUFF_SIZE_MAX / PRD_SIZE_MAX,
.buffer_bytes_max = BUFF_SIZE_MAX,
.period_bytes_max = PRD_SIZE_MAX,
.periods_min = MIN_PERIODS,
};
static void u_audio_iso_complete(struct usb_ep *ep, struct usb_request *req)
{
unsigned pending;
unsigned long flags;
unsigned int hw_ptr;
bool update_alsa = false;
int status = req->status;
struct uac_req *ur = req->context;
struct snd_pcm_substream *substream;
struct uac_rtd_params *prm = ur->pp;
struct snd_uac_chip *uac = prm->uac;
/* i/f shutting down */
if (!prm->ep_enabled || req->status == -ESHUTDOWN)
return;
/*
* We can't really do much about bad xfers.
* Afterall, the ISOCH xfers could fail legitimately.
*/
if (status)
pr_debug("%s: iso_complete status(%d) %d/%d\n",
__func__, status, req->actual, req->length);
substream = prm->ss;
/* Do nothing if ALSA isn't active */
if (!substream)
goto exit;
spin_lock_irqsave(&prm->lock, flags);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
/*
* For each IN packet, take the quotient of the current data
* rate and the endpoint's interval as the base packet size.
* If there is a residue from this division, add it to the
* residue accumulator.
*/
req->length = uac->p_pktsize;
uac->p_residue += uac->p_pktsize_residue;
/*
* Whenever there are more bytes in the accumulator than we
* need to add one more sample frame, increase this packet's
* size and decrease the accumulator.
*/
if (uac->p_residue / uac->p_interval >= uac->p_framesize) {
req->length += uac->p_framesize;
uac->p_residue -= uac->p_framesize *
uac->p_interval;
}
req->actual = req->length;
}
pending = prm->hw_ptr % prm->period_size;
pending += req->actual;
if (pending >= prm->period_size)
update_alsa = true;
hw_ptr = prm->hw_ptr;
prm->hw_ptr = (prm->hw_ptr + req->actual) % prm->dma_bytes;
spin_unlock_irqrestore(&prm->lock, flags);
/* Pack USB load in ALSA ring buffer */
pending = prm->dma_bytes - hw_ptr;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (unlikely(pending < req->actual)) {
memcpy(req->buf, prm->dma_area + hw_ptr, pending);
memcpy(req->buf + pending, prm->dma_area,
req->actual - pending);
} else {
memcpy(req->buf, prm->dma_area + hw_ptr, req->actual);
}
} else {
if (unlikely(pending < req->actual)) {
memcpy(prm->dma_area + hw_ptr, req->buf, pending);
memcpy(prm->dma_area, req->buf + pending,
req->actual - pending);
} else {
memcpy(prm->dma_area + hw_ptr, req->buf, req->actual);
}
}
exit:
if (usb_ep_queue(ep, req, GFP_ATOMIC))
dev_err(uac->card->dev, "%d Error!\n", __LINE__);
if (update_alsa)
snd_pcm_period_elapsed(substream);
}
static int uac_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_uac_chip *uac = snd_pcm_substream_chip(substream);
struct uac_rtd_params *prm;
struct g_audio *audio_dev;
struct uac_params *params;
unsigned long flags;
int err = 0;
audio_dev = uac->audio_dev;
params = &audio_dev->params;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
prm = &uac->p_prm;
else
prm = &uac->c_prm;
spin_lock_irqsave(&prm->lock, flags);
/* Reset */
prm->hw_ptr = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
prm->ss = substream;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
prm->ss = NULL;
break;
default:
err = -EINVAL;
}
spin_unlock_irqrestore(&prm->lock, flags);
/* Clear buffer after Play stops */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && !prm->ss)
memset(prm->rbuf, 0, prm->max_psize * params->req_number);
return err;
}
static snd_pcm_uframes_t uac_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_uac_chip *uac = snd_pcm_substream_chip(substream);
struct uac_rtd_params *prm;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
prm = &uac->p_prm;
else
prm = &uac->c_prm;
return bytes_to_frames(substream->runtime, prm->hw_ptr);
}
static int uac_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_uac_chip *uac = snd_pcm_substream_chip(substream);
struct uac_rtd_params *prm;
int err;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
prm = &uac->p_prm;
else
prm = &uac->c_prm;
err = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
if (err >= 0) {
prm->dma_bytes = substream->runtime->dma_bytes;
prm->dma_area = substream->runtime->dma_area;
prm->period_size = params_period_bytes(hw_params);
}
return err;
}
static int uac_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_uac_chip *uac = snd_pcm_substream_chip(substream);
struct uac_rtd_params *prm;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
prm = &uac->p_prm;
else
prm = &uac->c_prm;
prm->dma_area = NULL;
prm->dma_bytes = 0;
prm->period_size = 0;
return snd_pcm_lib_free_pages(substream);
}
static int uac_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_uac_chip *uac = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct g_audio *audio_dev;
struct uac_params *params;
int p_ssize, c_ssize;
int p_srate, c_srate;
int p_chmask, c_chmask;
audio_dev = uac->audio_dev;
params = &audio_dev->params;
p_ssize = params->p_ssize;
c_ssize = params->c_ssize;
p_srate = params->p_srate;
c_srate = params->c_srate;
p_chmask = params->p_chmask;
c_chmask = params->c_chmask;
uac->p_residue = 0;
runtime->hw = uac_pcm_hardware;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
spin_lock_init(&uac->p_prm.lock);
runtime->hw.rate_min = p_srate;
switch (p_ssize) {
case 3:
runtime->hw.formats = SNDRV_PCM_FMTBIT_S24_3LE;
break;
case 4:
runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE;
break;
default:
runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
break;
}
runtime->hw.channels_min = num_channels(p_chmask);
runtime->hw.period_bytes_min = 2 * uac->p_prm.max_psize
/ runtime->hw.periods_min;
} else {
spin_lock_init(&uac->c_prm.lock);
runtime->hw.rate_min = c_srate;
switch (c_ssize) {
case 3:
runtime->hw.formats = SNDRV_PCM_FMTBIT_S24_3LE;
break;
case 4:
runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE;
break;
default:
runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
break;
}
runtime->hw.channels_min = num_channels(c_chmask);
runtime->hw.period_bytes_min = 2 * uac->c_prm.max_psize
/ runtime->hw.periods_min;
}
runtime->hw.rate_max = runtime->hw.rate_min;
runtime->hw.channels_max = runtime->hw.channels_min;
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
return 0;
}
/* ALSA cries without these function pointers */
static int uac_pcm_null(struct snd_pcm_substream *substream)
{
return 0;
}
static struct snd_pcm_ops uac_pcm_ops = {
.open = uac_pcm_open,
.close = uac_pcm_null,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = uac_pcm_hw_params,
.hw_free = uac_pcm_hw_free,
.trigger = uac_pcm_trigger,
.pointer = uac_pcm_pointer,
.prepare = uac_pcm_null,
};
static inline void free_ep(struct uac_rtd_params *prm, struct usb_ep *ep)
{
struct snd_uac_chip *uac = prm->uac;
struct g_audio *audio_dev;
struct uac_params *params;
int i;
if (!prm->ep_enabled)
return;
prm->ep_enabled = false;
audio_dev = uac->audio_dev;
params = &audio_dev->params;
for (i = 0; i < params->req_number; i++) {
if (prm->ureq[i].req) {
usb_ep_dequeue(ep, prm->ureq[i].req);
usb_ep_free_request(ep, prm->ureq[i].req);
prm->ureq[i].req = NULL;
}
}
if (usb_ep_disable(ep))
dev_err(uac->card->dev, "%s:%d Error!\n", __func__, __LINE__);
}
int u_audio_start_capture(struct g_audio *audio_dev)
{
struct snd_uac_chip *uac = audio_dev->uac;
struct usb_gadget *gadget = audio_dev->gadget;
struct device *dev = &gadget->dev;
struct usb_request *req;
struct usb_ep *ep;
struct uac_rtd_params *prm;
struct uac_params *params = &audio_dev->params;
int req_len, i;
ep = audio_dev->out_ep;
prm = &uac->c_prm;
config_ep_by_speed(gadget, &audio_dev->func, ep);
req_len = prm->max_psize;
prm->ep_enabled = true;
usb_ep_enable(ep);
for (i = 0; i < params->req_number; i++) {
if (!prm->ureq[i].req) {
req = usb_ep_alloc_request(ep, GFP_ATOMIC);
if (req == NULL)
return -ENOMEM;
prm->ureq[i].req = req;
prm->ureq[i].pp = prm;
req->zero = 0;
req->context = &prm->ureq[i];
req->length = req_len;
req->complete = u_audio_iso_complete;
req->buf = prm->rbuf + i * prm->max_psize;
}
if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC))
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
}
return 0;
}
EXPORT_SYMBOL_GPL(u_audio_start_capture);
void u_audio_stop_capture(struct g_audio *audio_dev)
{
struct snd_uac_chip *uac = audio_dev->uac;
free_ep(&uac->c_prm, audio_dev->out_ep);
}
EXPORT_SYMBOL_GPL(u_audio_stop_capture);
int u_audio_start_playback(struct g_audio *audio_dev)
{
struct snd_uac_chip *uac = audio_dev->uac;
struct usb_gadget *gadget = audio_dev->gadget;
struct device *dev = &gadget->dev;
struct usb_request *req;
struct usb_ep *ep;
struct uac_rtd_params *prm;
struct uac_params *params = &audio_dev->params;
unsigned int factor, rate;
const struct usb_endpoint_descriptor *ep_desc;
int req_len, i;
ep = audio_dev->in_ep;
prm = &uac->p_prm;
config_ep_by_speed(gadget, &audio_dev->func, ep);
ep_desc = ep->desc;
/* pre-calculate the playback endpoint's interval */
if (gadget->speed == USB_SPEED_FULL)
factor = 1000;
else
factor = 8000;
/* pre-compute some values for iso_complete() */
uac->p_framesize = params->p_ssize *
num_channels(params->p_chmask);
rate = params->p_srate * uac->p_framesize;
uac->p_interval = factor / (1 << (ep_desc->bInterval - 1));
uac->p_pktsize = min_t(unsigned int, rate / uac->p_interval,
prm->max_psize);
if (uac->p_pktsize < prm->max_psize)
uac->p_pktsize_residue = rate % uac->p_interval;
else
uac->p_pktsize_residue = 0;
req_len = uac->p_pktsize;
uac->p_residue = 0;
prm->ep_enabled = true;
usb_ep_enable(ep);
for (i = 0; i < params->req_number; i++) {
if (!prm->ureq[i].req) {
req = usb_ep_alloc_request(ep, GFP_ATOMIC);
if (req == NULL)
return -ENOMEM;
prm->ureq[i].req = req;
prm->ureq[i].pp = prm;
req->zero = 0;
req->context = &prm->ureq[i];
req->length = req_len;
req->complete = u_audio_iso_complete;
req->buf = prm->rbuf + i * prm->max_psize;
}
if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC))
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
}
return 0;
}
EXPORT_SYMBOL_GPL(u_audio_start_playback);
void u_audio_stop_playback(struct g_audio *audio_dev)
{
struct snd_uac_chip *uac = audio_dev->uac;
free_ep(&uac->p_prm, audio_dev->in_ep);
}
EXPORT_SYMBOL_GPL(u_audio_stop_playback);
int g_audio_setup(struct g_audio *g_audio, const char *pcm_name,
const char *card_name)
{
struct snd_uac_chip *uac;
struct snd_card *card;
struct snd_pcm *pcm;
struct uac_params *params;
int p_chmask, c_chmask;
int err;
if (!g_audio)
return -EINVAL;
uac = kzalloc(sizeof(*uac), GFP_KERNEL);
if (!uac)
return -ENOMEM;
g_audio->uac = uac;
uac->audio_dev = g_audio;
params = &g_audio->params;
p_chmask = params->p_chmask;
c_chmask = params->c_chmask;
if (c_chmask) {
struct uac_rtd_params *prm = &uac->c_prm;
uac->c_prm.uac = uac;
prm->max_psize = g_audio->out_ep_maxpsize;
prm->ureq = kcalloc(params->req_number, sizeof(struct uac_req),
GFP_KERNEL);
if (!prm->ureq) {
err = -ENOMEM;
goto fail;
}
prm->rbuf = kcalloc(params->req_number, prm->max_psize,
GFP_KERNEL);
if (!prm->rbuf) {
prm->max_psize = 0;
err = -ENOMEM;
goto fail;
}
}
if (p_chmask) {
struct uac_rtd_params *prm = &uac->p_prm;
uac->p_prm.uac = uac;
prm->max_psize = g_audio->in_ep_maxpsize;
prm->ureq = kcalloc(params->req_number, sizeof(struct uac_req),
GFP_KERNEL);
if (!prm->ureq) {
err = -ENOMEM;
goto fail;
}
prm->rbuf = kcalloc(params->req_number, prm->max_psize,
GFP_KERNEL);
if (!prm->rbuf) {
prm->max_psize = 0;
err = -ENOMEM;
goto fail;
}
}
/* Choose any slot, with no id */
err = snd_card_new(&g_audio->gadget->dev,
-1, NULL, THIS_MODULE, 0, &card);
if (err < 0)
goto fail;
uac->card = card;
/*
* Create first PCM device
* Create a substream only for non-zero channel streams
*/
err = snd_pcm_new(uac->card, pcm_name, 0,
p_chmask ? 1 : 0, c_chmask ? 1 : 0, &pcm);
if (err < 0)
goto snd_fail;
strcpy(pcm->name, pcm_name);
pcm->private_data = uac;
uac->pcm = pcm;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &uac_pcm_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &uac_pcm_ops);
strcpy(card->driver, card_name);
strcpy(card->shortname, card_name);
sprintf(card->longname, "%s %i", card_name, card->dev->id);
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL), 0, BUFF_SIZE_MAX);
err = snd_card_register(card);
if (!err)
return 0;
snd_fail:
snd_card_free(card);
fail:
kfree(uac->p_prm.ureq);
kfree(uac->c_prm.ureq);
kfree(uac->p_prm.rbuf);
kfree(uac->c_prm.rbuf);
kfree(uac);
return err;
}
EXPORT_SYMBOL_GPL(g_audio_setup);
void g_audio_cleanup(struct g_audio *g_audio)
{
struct snd_uac_chip *uac;
struct snd_card *card;
if (!g_audio || !g_audio->uac)
return;
uac = g_audio->uac;
card = uac->card;
if (card)
snd_card_free(card);
kfree(uac->p_prm.ureq);
kfree(uac->c_prm.ureq);
kfree(uac->p_prm.rbuf);
kfree(uac->c_prm.rbuf);
kfree(uac);
}
EXPORT_SYMBOL_GPL(g_audio_cleanup);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("USB gadget \"ALSA sound card\" utilities");
MODULE_AUTHOR("Ruslan Bilovol");

95
drivers/usb/gadget/function/u_audio.h Normal file
View File

@ -0,0 +1,95 @@
/*
* u_audio.h -- interface to USB gadget "ALSA sound card" utilities
*
* Copyright (C) 2016
* Author: Ruslan Bilovol <ruslan.bilovol@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef __U_AUDIO_H
#define __U_AUDIO_H
#include <linux/usb/composite.h>
struct uac_params {
/* playback */
int p_chmask; /* channel mask */
int p_srate; /* rate in Hz */
int p_ssize; /* sample size */
/* capture */
int c_chmask; /* channel mask */
int c_srate; /* rate in Hz */
int c_ssize; /* sample size */
int req_number; /* number of preallocated requests */
};
struct g_audio {
struct usb_function func;
struct usb_gadget *gadget;
struct usb_ep *in_ep;
struct usb_ep *out_ep;
/* Max packet size for all in_ep possible speeds */
unsigned int in_ep_maxpsize;
/* Max packet size for all out_ep possible speeds */
unsigned int out_ep_maxpsize;
/* The ALSA Sound Card it represents on the USB-Client side */
struct snd_uac_chip *uac;
struct uac_params params;
};
static inline struct g_audio *func_to_g_audio(struct usb_function *f)
{
return container_of(f, struct g_audio, func);
}
static inline uint num_channels(uint chanmask)
{
uint num = 0;
while (chanmask) {
num += (chanmask & 1);
chanmask >>= 1;
}
return num;
}
/*
* g_audio_setup - initialize one virtual ALSA sound card
* @g_audio: struct with filled params, in_ep_maxpsize, out_ep_maxpsize
* @pcm_name: the id string for a PCM instance of this sound card
* @card_name: name of this soundcard
*
* This sets up the single virtual ALSA sound card that may be exported by a
* gadget driver using this framework.
*
* Context: may sleep
*
* Returns zero on success, or a negative error on failure.
*/
int g_audio_setup(struct g_audio *g_audio, const char *pcm_name,
const char *card_name);
void g_audio_cleanup(struct g_audio *g_audio);
int u_audio_start_capture(struct g_audio *g_audio);
void u_audio_stop_capture(struct g_audio *g_audio);
int u_audio_start_playback(struct g_audio *g_audio);
void u_audio_stop_playback(struct g_audio *g_audio);
#endif /* __U_AUDIO_H */

3
drivers/usb/gadget/function/u_fs.h
View File

@ -216,6 +216,9 @@ struct ffs_data {
#define FFS_FL_CALL_CLOSED_CALLBACK 0
#define FFS_FL_BOUND 1
/* For waking up blocked threads when function is enabled. */
wait_queue_head_t wait;
/* Active function */
struct ffs_function *func;

87
drivers/usb/gadget/function/u_uac1.h
View File

@ -1,82 +1,41 @@
/*
* u_uac1.h -- interface to USB gadget "ALSA AUDIO" utilities
* u_uac1.h - Utility definitions for UAC1 function
*
* Copyright (C) 2008 Bryan Wu <cooloney@kernel.org>
* Copyright (C) 2008 Analog Devices, Inc
* Copyright (C) 2016 Ruslan Bilovol <ruslan.bilovol@gmail.com>
*
* Enter bugs at http://blackfin.uclinux.org/
*
* Licensed under the GPL-2 or later.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __U_AUDIO_H
#define __U_AUDIO_H
#ifndef __U_UAC1_H
#define __U_UAC1_H
#include <linux/device.h>
#include <linux/err.h>
#include <linux/usb/audio.h>
#include <linux/usb/composite.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#define FILE_PCM_PLAYBACK "/dev/snd/pcmC0D0p"
#define FILE_PCM_CAPTURE "/dev/snd/pcmC0D0c"
#define FILE_CONTROL "/dev/snd/controlC0"
#define UAC1_OUT_EP_MAX_PACKET_SIZE 200
#define UAC1_REQ_COUNT 256
#define UAC1_AUDIO_BUF_SIZE 48000
#define UAC1_DEF_CCHMASK 0x3
#define UAC1_DEF_CSRATE 48000
#define UAC1_DEF_CSSIZE 2
#define UAC1_DEF_PCHMASK 0x3
#define UAC1_DEF_PSRATE 48000
#define UAC1_DEF_PSSIZE 2
#define UAC1_DEF_REQ_NUM 2
/*
* This represents the USB side of an audio card device, managed by a USB
* function which provides control and stream interfaces.
*/
struct gaudio_snd_dev {
struct gaudio *card;
struct file *filp;
struct snd_pcm_substream *substream;
int access;
int format;
int channels;
int rate;
};
struct gaudio {
struct usb_function func;
struct usb_gadget *gadget;
/* ALSA sound device interfaces */
struct gaudio_snd_dev control;
struct gaudio_snd_dev playback;
struct gaudio_snd_dev capture;
/* TODO */
};
struct f_uac1_opts {
struct usb_function_instance func_inst;
int req_buf_size;
int req_count;
int audio_buf_size;
char *fn_play;
char *fn_cap;
char *fn_cntl;
int c_chmask;
int c_srate;
int c_ssize;
int p_chmask;
int p_srate;
int p_ssize;
int req_number;
unsigned bound:1;
unsigned fn_play_alloc:1;
unsigned fn_cap_alloc:1;
unsigned fn_cntl_alloc:1;
struct mutex lock;
int refcnt;
};
int gaudio_setup(struct gaudio *card);
void gaudio_cleanup(struct gaudio *the_card);
size_t u_audio_playback(struct gaudio *card, void *buf, size_t count);
int u_audio_get_playback_channels(struct gaudio *card);
int u_audio_get_playback_rate(struct gaudio *card);
#endif /* __U_AUDIO_H */
#endif /* __U_UAC1_H */

7
drivers/usb/gadget/function/u_uac1.c → drivers/usb/gadget/function/u_uac1_legacy.c
View File

@ -18,7 +18,7 @@
#include <linux/random.h>
#include <linux/syscalls.h>
#include "u_uac1.h"
#include "u_uac1_legacy.h"
/*
* This component encapsulates the ALSA devices for USB audio gadget
@ -205,10 +205,11 @@ static int gaudio_open_snd_dev(struct gaudio *card)
{
struct snd_pcm_file *pcm_file;
struct gaudio_snd_dev *snd;
struct f_uac1_opts *opts;
struct f_uac1_legacy_opts *opts;
char *fn_play, *fn_cap, *fn_cntl;
opts = container_of(card->func.fi, struct f_uac1_opts, func_inst);
opts = container_of(card->func.fi, struct f_uac1_legacy_opts,
func_inst);
fn_play = opts->fn_play;
fn_cap = opts->fn_cap;
fn_cntl = opts->fn_cntl;

82
drivers/usb/gadget/function/u_uac1_legacy.h Normal file
View File

@ -0,0 +1,82 @@
/*
* u_uac1.h -- interface to USB gadget "ALSA AUDIO" utilities
*
* Copyright (C) 2008 Bryan Wu <cooloney@kernel.org>
* Copyright (C) 2008 Analog Devices, Inc
*
* Enter bugs at http://blackfin.uclinux.org/
*
* Licensed under the GPL-2 or later.
*/
#ifndef __U_UAC1_LEGACY_H
#define __U_UAC1_LEGACY_H
#include <linux/device.h>
#include <linux/err.h>
#include <linux/usb/audio.h>
#include <linux/usb/composite.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#define FILE_PCM_PLAYBACK "/dev/snd/pcmC0D0p"
#define FILE_PCM_CAPTURE "/dev/snd/pcmC0D0c"
#define FILE_CONTROL "/dev/snd/controlC0"
#define UAC1_OUT_EP_MAX_PACKET_SIZE 200
#define UAC1_REQ_COUNT 256
#define UAC1_AUDIO_BUF_SIZE 48000
/*
* This represents the USB side of an audio card device, managed by a USB
* function which provides control and stream interfaces.
*/
struct gaudio_snd_dev {
struct gaudio *card;
struct file *filp;
struct snd_pcm_substream *substream;
int access;
int format;
int channels;
int rate;
};
struct gaudio {
struct usb_function func;
struct usb_gadget *gadget;
/* ALSA sound device interfaces */
struct gaudio_snd_dev control;
struct gaudio_snd_dev playback;
struct gaudio_snd_dev capture;
/* TODO */
};
struct f_uac1_legacy_opts {
struct usb_function_instance func_inst;
int req_buf_size;
int req_count;
int audio_buf_size;
char *fn_play;
char *fn_cap;
char *fn_cntl;
unsigned bound:1;
unsigned fn_play_alloc:1;
unsigned fn_cap_alloc:1;
unsigned fn_cntl_alloc:1;
struct mutex lock;
int refcnt;
};
int gaudio_setup(struct gaudio *card);
void gaudio_cleanup(struct gaudio *the_card);
size_t u_audio_playback(struct gaudio *card, void *buf, size_t count);
int u_audio_get_playback_channels(struct gaudio *card);
int u_audio_get_playback_rate(struct gaudio *card);
#endif /* __U_UAC1_LEGACY_H */

15
drivers/usb/gadget/legacy/Kconfig
View File

@ -54,8 +54,10 @@ config USB_AUDIO
depends on SND
select USB_LIBCOMPOSITE
select SND_PCM
select USB_F_UAC1 if GADGET_UAC1
select USB_F_UAC1 if (GADGET_UAC1 && !GADGET_UAC1_LEGACY)
select USB_F_UAC1_LEGACY if (GADGET_UAC1 && GADGET_UAC1_LEGACY)
select USB_F_UAC2 if !GADGET_UAC1
select USB_U_AUDIO if (USB_F_UAC2 || USB_F_UAC1)
help
This Gadget Audio driver is compatible with USB Audio Class
specification 2.0. It implements 1 AudioControl interface,
@ -73,10 +75,17 @@ config USB_AUDIO
dynamically linked module called "g_audio".
config GADGET_UAC1
bool "UAC 1.0 (Legacy)"
bool "UAC 1.0"
depends on USB_AUDIO
help
If you instead want older UAC Spec-1.0 driver that also has audio
If you instead want older USB Audio Class specification 1.0 support
with similar driver capabilities.
config GADGET_UAC1_LEGACY
bool "UAC 1.0 (Legacy)"
depends on GADGET_UAC1
help
If you instead want legacy UAC Spec-1.0 driver that also has audio
paths hardwired to the Audio codec chip on-board and doesn't work
without one.

55
drivers/usb/gadget/legacy/audio.c
View File

@ -53,8 +53,41 @@ static int c_ssize = UAC2_DEF_CSSIZE;
module_param(c_ssize, uint, S_IRUGO);
MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)");
#else
#ifndef CONFIG_GADGET_UAC1_LEGACY
#include "u_uac1.h"
/* Playback(USB-IN) Default Stereo - Fl/Fr */
static int p_chmask = UAC1_DEF_PCHMASK;
module_param(p_chmask, uint, S_IRUGO);
MODULE_PARM_DESC(p_chmask, "Playback Channel Mask");
/* Playback Default 48 KHz */
static int p_srate = UAC1_DEF_PSRATE;
module_param(p_srate, uint, S_IRUGO);
MODULE_PARM_DESC(p_srate, "Playback Sampling Rate");
/* Playback Default 16bits/sample */
static int p_ssize = UAC1_DEF_PSSIZE;
module_param(p_ssize, uint, S_IRUGO);
MODULE_PARM_DESC(p_ssize, "Playback Sample Size(bytes)");
/* Capture(USB-OUT) Default Stereo - Fl/Fr */
static int c_chmask = UAC1_DEF_CCHMASK;
module_param(c_chmask, uint, S_IRUGO);
MODULE_PARM_DESC(c_chmask, "Capture Channel Mask");
/* Capture Default 48 KHz */
static int c_srate = UAC1_DEF_CSRATE;
module_param(c_srate, uint, S_IRUGO);
MODULE_PARM_DESC(c_srate, "Capture Sampling Rate");
/* Capture Default 16bits/sample */
static int c_ssize = UAC1_DEF_CSSIZE;
module_param(c_ssize, uint, S_IRUGO);
MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)");
#else /* CONFIG_GADGET_UAC1_LEGACY */
#include "u_uac1_legacy.h"
static char *fn_play = FILE_PCM_PLAYBACK;
module_param(fn_play, charp, S_IRUGO);
MODULE_PARM_DESC(fn_play, "Playback PCM device file name");
@ -78,6 +111,7 @@ MODULE_PARM_DESC(req_count, "ISO OUT endpoint request count");
static int audio_buf_size = UAC1_AUDIO_BUF_SIZE;
module_param(audio_buf_size, int, S_IRUGO);
MODULE_PARM_DESC(audio_buf_size, "Audio buffer size");
#endif /* CONFIG_GADGET_UAC1_LEGACY */
#endif
/* string IDs are assigned dynamically */
@ -125,7 +159,7 @@ static struct usb_device_descriptor device_desc = {
/* .bcdUSB = DYNAMIC */
#ifdef CONFIG_GADGET_UAC1
#ifdef CONFIG_GADGET_UAC1_LEGACY
.bDeviceClass = USB_CLASS_PER_INTERFACE,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
@ -207,7 +241,11 @@ static int audio_bind(struct usb_composite_dev *cdev)
#ifndef CONFIG_GADGET_UAC1
struct f_uac2_opts *uac2_opts;
#else
#ifndef CONFIG_GADGET_UAC1_LEGACY
struct f_uac1_opts *uac1_opts;
#else
struct f_uac1_legacy_opts *uac1_opts;
#endif
#endif
int status;
@ -216,7 +254,11 @@ static int audio_bind(struct usb_composite_dev *cdev)
if (IS_ERR(fi_uac2))
return PTR_ERR(fi_uac2);
#else
#ifndef CONFIG_GADGET_UAC1_LEGACY
fi_uac1 = usb_get_function_instance("uac1");
#else
fi_uac1 = usb_get_function_instance("uac1_legacy");
#endif
if (IS_ERR(fi_uac1))
return PTR_ERR(fi_uac1);
#endif
@ -231,13 +273,24 @@ static int audio_bind(struct usb_composite_dev *cdev)
uac2_opts->c_ssize = c_ssize;
uac2_opts->req_number = UAC2_DEF_REQ_NUM;
#else
#ifndef CONFIG_GADGET_UAC1_LEGACY
uac1_opts = container_of(fi_uac1, struct f_uac1_opts, func_inst);
uac1_opts->p_chmask = p_chmask;
uac1_opts->p_srate = p_srate;
uac1_opts->p_ssize = p_ssize;
uac1_opts->c_chmask = c_chmask;
uac1_opts->c_srate = c_srate;
uac1_opts->c_ssize = c_ssize;
uac1_opts->req_number = UAC1_DEF_REQ_NUM;
#else /* CONFIG_GADGET_UAC1_LEGACY */
uac1_opts = container_of(fi_uac1, struct f_uac1_legacy_opts, func_inst);
uac1_opts->fn_play = fn_play;
uac1_opts->fn_cap = fn_cap;
uac1_opts->fn_cntl = fn_cntl;
uac1_opts->req_buf_size = req_buf_size;
uac1_opts->req_count = req_count;
uac1_opts->audio_buf_size = audio_buf_size;
#endif /* CONFIG_GADGET_UAC1_LEGACY */
#endif
status = usb_string_ids_tab(cdev, strings_dev);

8
drivers/usb/gadget/legacy/mass_storage.c
View File

@ -210,7 +210,6 @@ static int msg_bind(struct usb_composite_dev *cdev)
usb_composite_overwrite_options(cdev, &coverwrite);
dev_info(&cdev->gadget->dev,
DRIVER_DESC ", version: " DRIVER_VERSION "\n");
set_bit(0, &msg_registered);
return 0;
fail_otg_desc:
@ -257,7 +256,12 @@ MODULE_LICENSE("GPL");
static int __init msg_init(void)
{
return usb_composite_probe(&msg_driver);
int ret;
ret = usb_composite_probe(&msg_driver);
set_bit(0, &msg_registered);
return ret;
}
module_init(msg_init);

18
drivers/usb/gadget/udc/Kconfig
View File

@ -55,7 +55,7 @@ config USB_LPC32XX
config USB_ATMEL_USBA
tristate "Atmel USBA"
depends on ((AVR32 && !OF) || ARCH_AT91)
depends on ARCH_AT91
help
USBA is the integrated high-speed USB Device controller on
the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
@ -256,7 +256,7 @@ config USB_MV_U3D
controller, which support super speed USB peripheral.
config USB_SNP_CORE
depends on USB_AMD5536UDC
depends on (USB_AMD5536UDC || USB_SNP_UDC_PLAT)
tristate
help
This enables core driver support for Synopsys USB 2.0 Device
@ -269,6 +269,20 @@ config USB_SNP_CORE
This IP is different to the High Speed OTG IP that can be enabled
by selecting USB_DWC2 or USB_DWC3 options.
config USB_SNP_UDC_PLAT
tristate "Synopsys USB 2.0 Device controller"
depends on (USB_GADGET && OF)
select USB_GADGET_DUALSPEED
select USB_SNP_CORE
default ARCH_BCM_IPROC
help
This adds Platform Device support for Synopsys Designware core
AHB subsystem USB2.0 Device Controller (UDC).
This driver works with UDCs integrated into Broadcom's Northstar2
and Cygnus SoCs.
If unsure, say N.
#
# Controllers available in both integrated and discrete versions
#

3
drivers/usb/gadget/udc/Makefile
View File

@ -10,7 +10,7 @@ obj-$(CONFIG_USB_GADGET) += udc-core.o
obj-$(CONFIG_USB_DUMMY_HCD) += dummy_hcd.o
obj-$(CONFIG_USB_NET2272) += net2272.o
obj-$(CONFIG_USB_NET2280) += net2280.o
obj-$(CONFIG_USB_SNP_CORE) += amd5536udc.o
obj-$(CONFIG_USB_SNP_CORE) += snps_udc_core.o
obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc_pci.o
obj-$(CONFIG_USB_PXA25X) += pxa25x_udc.o
obj-$(CONFIG_USB_PXA27X) += pxa27x_udc.o
@ -37,4 +37,5 @@ obj-$(CONFIG_USB_FOTG210_UDC) += fotg210-udc.o
obj-$(CONFIG_USB_MV_U3D) += mv_u3d_core.o
obj-$(CONFIG_USB_GR_UDC) += gr_udc.o
obj-$(CONFIG_USB_GADGET_XILINX) += udc-xilinx.o
obj-$(CONFIG_USB_SNP_UDC_PLAT) += snps_udc_plat.o
obj-$(CONFIG_USB_BDC_UDC) += bdc/

18
drivers/usb/gadget/udc/amd5536udc.h
View File

@ -16,6 +16,7 @@
/* debug control */
/* #define UDC_VERBOSE */
#include <linux/extcon.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
@ -28,6 +29,9 @@
#define UDC_HSA0_REV 1
#define UDC_HSB1_REV 2
/* Broadcom chip rev. */
#define UDC_BCM_REV 10
/*
* SETUP usb commands
* needed, because some SETUP's are handled in hw, but must be passed to
@ -112,6 +116,7 @@
#define UDC_DEVCTL_BRLEN_MASK 0x00ff0000
#define UDC_DEVCTL_BRLEN_OFS 16
#define UDC_DEVCTL_SRX_FLUSH 14
#define UDC_DEVCTL_CSR_DONE 13
#define UDC_DEVCTL_DEVNAK 12
#define UDC_DEVCTL_SD 10
@ -563,6 +568,16 @@ struct udc {
u16 cur_config;
u16 cur_intf;
u16 cur_alt;
/* for platform device and extcon support */
struct device *dev;
struct phy *udc_phy;
struct extcon_dev *edev;
struct extcon_specific_cable_nb extcon_nb;
struct notifier_block nb;
struct delayed_work drd_work;
struct workqueue_struct *drd_wq;
u32 conn_type;
};
#define to_amd5536_udc(g) (container_of((g), struct udc, gadget))
@ -578,6 +593,7 @@ int udc_enable_dev_setup_interrupts(struct udc *dev);
int udc_mask_unused_interrupts(struct udc *dev);
irqreturn_t udc_irq(int irq, void *pdev);
void gadget_release(struct device *pdev);
void empty_req_queue(struct udc_ep *ep);
void udc_basic_init(struct udc *dev);
void free_dma_pools(struct udc *dev);
int init_dma_pools(struct udc *dev);
@ -639,7 +655,7 @@ MODULE_PARM_DESC(use_fullspeed, "true for fullspeed only");
/* debug macros ------------------------------------------------------------*/
#define DBG(udc , args...) dev_dbg(&(udc)->pdev->dev, args)
#define DBG(udc , args...) dev_dbg(udc->dev, args)
#ifdef UDC_VERBOSE
#define VDBG DBG

1
drivers/usb/gadget/udc/amd5536udc_pci.c
View File

@ -168,6 +168,7 @@ static int udc_pci_probe(
dev->phys_addr = resource;
dev->irq = pdev->irq;
dev->pdev = pdev;
dev->dev = &pdev->dev;
/* general probing */
if (udc_probe(dev)) {

4
drivers/usb/gadget/udc/atmel_usba_udc.c
View File

@ -152,7 +152,7 @@ static int regs_dbg_open(struct inode *inode, struct file *file)
spin_lock_irq(&udc->lock);
for (i = 0; i < inode->i_size / 4; i++)
data[i] = usba_io_readl(udc->regs + i * 4);
data[i] = readl_relaxed(udc->regs + i * 4);
spin_unlock_irq(&udc->lock);
file->private_data = data;
@ -1369,7 +1369,7 @@ static int handle_ep0_setup(struct usba_udc *udc, struct usba_ep *ep,
if (crq->wLength != cpu_to_le16(sizeof(status)))
goto stall;
ep->state = DATA_STAGE_IN;
usba_io_writew(status, ep->fifo);
writew_relaxed(status, ep->fifo);
usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
break;
}

27
drivers/usb/gadget/udc/atmel_usba_udc.h
View File

@ -43,13 +43,8 @@
#define USBA_REMOTE_WAKE_UP (1 << 10)
#define USBA_PULLD_DIS (1 << 11)
#if defined(CONFIG_AVR32)
#define USBA_ENABLE_MASK USBA_EN_USBA
#define USBA_DISABLE_MASK 0
#elif defined(CONFIG_ARCH_AT91)
#define USBA_ENABLE_MASK (USBA_EN_USBA | USBA_PULLD_DIS)
#define USBA_DISABLE_MASK USBA_DETACH
#endif /* CONFIG_ARCH_AT91 */
/* Bitfields in FNUM */
#define USBA_MICRO_FRAME_NUM_OFFSET 0
@ -191,28 +186,18 @@
| USBA_BF(name, value))
/* Register access macros */
#ifdef CONFIG_AVR32
#define usba_io_readl __raw_readl
#define usba_io_writel __raw_writel
#define usba_io_writew __raw_writew
#else
#define usba_io_readl readl_relaxed
#define usba_io_writel writel_relaxed
#define usba_io_writew writew_relaxed
#endif
#define usba_readl(udc, reg) \
usba_io_readl((udc)->regs + USBA_##reg)
readl_relaxed((udc)->regs + USBA_##reg)
#define usba_writel(udc, reg, value) \
usba_io_writel((value), (udc)->regs + USBA_##reg)
writel_relaxed((value), (udc)->regs + USBA_##reg)
#define usba_ep_readl(ep, reg) \
usba_io_readl((ep)->ep_regs + USBA_EPT_##reg)
readl_relaxed((ep)->ep_regs + USBA_EPT_##reg)
#define usba_ep_writel(ep, reg, value) \
usba_io_writel((value), (ep)->ep_regs + USBA_EPT_##reg)
writel_relaxed((value), (ep)->ep_regs + USBA_EPT_##reg)
#define usba_dma_readl(ep, reg) \
usba_io_readl((ep)->dma_regs + USBA_DMA_##reg)
readl_relaxed((ep)->dma_regs + USBA_DMA_##reg)
#define usba_dma_writel(ep, reg, value) \
usba_io_writel((value), (ep)->dma_regs + USBA_DMA_##reg)
writel_relaxed((value), (ep)->dma_regs + USBA_DMA_##reg)
/* Calculate base address for a given endpoint or DMA controller */
#define USBA_EPT_BASE(x) (0x100 + (x) * 0x20)

2
drivers/usb/gadget/udc/bdc/bdc_core.c
View File

@ -475,7 +475,7 @@ static int bdc_probe(struct platform_device *pdev)
bdc->dev = dev;
dev_dbg(bdc->dev, "bdc->regs: %p irq=%d\n", bdc->regs, bdc->irq);
temp = bdc_readl(bdc->regs, BDC_BDCSC);
temp = bdc_readl(bdc->regs, BDC_BDCCAP1);
if ((temp & BDC_P64) &&
!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) {
dev_dbg(bdc->dev, "Using 64-bit address\n");

37
drivers/usb/gadget/udc/core.c
View File

@ -140,10 +140,8 @@ int usb_ep_disable(struct usb_ep *ep)
goto out;
ret = ep->ops->disable(ep);
if (ret) {
ret = ret;
if (ret)
goto out;
}
ep->enabled = false;
@ -1066,6 +1064,23 @@ static inline void usb_gadget_udc_stop(struct usb_udc *udc)
udc->gadget->ops->udc_stop(udc->gadget);
}
/**
* usb_gadget_udc_set_speed - tells usb device controller speed supported by
* current driver
* @udc: The device we want to set maximum speed
* @speed: The maximum speed to allowed to run
*
* This call is issued by the UDC Class driver before calling
* usb_gadget_udc_start() in order to make sure that we don't try to
* connect on speeds the gadget driver doesn't support.
*/
static inline void usb_gadget_udc_set_speed(struct usb_udc *udc,
enum usb_device_speed speed)
{
if (udc->gadget->ops->udc_set_speed)
udc->gadget->ops->udc_set_speed(udc->gadget, speed);
}
/**
* usb_udc_release - release the usb_udc struct
* @dev: the dev member within usb_udc
@ -1299,6 +1314,9 @@ static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *dri
udc->dev.driver = &driver->driver;
udc->gadget->dev.driver = &driver->driver;
if (driver->max_speed < udc->gadget->max_speed)
usb_gadget_udc_set_speed(udc, driver->max_speed);
ret = driver->bind(udc->gadget, driver);
if (ret)
goto err1;
@ -1451,6 +1469,18 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr,
}
static DEVICE_ATTR_RO(state);
static ssize_t function_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
struct usb_gadget_driver *drv = udc->driver;
if (!drv || !drv->function)
return 0;
return scnprintf(buf, PAGE_SIZE, "%s\n", drv->function);
}
static DEVICE_ATTR_RO(function);
#define USB_UDC_SPEED_ATTR(name, param) \
ssize_t name##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
@ -1486,6 +1516,7 @@ static struct attribute *usb_udc_attrs[] = {
&dev_attr_srp.attr,
&dev_attr_soft_connect.attr,
&dev_attr_state.attr,
&dev_attr_function.attr,
&dev_attr_current_speed.attr,
&dev_attr_maximum_speed.attr,

39
drivers/usb/gadget/udc/dummy_hcd.c
View File

@ -881,22 +881,6 @@ static int dummy_pullup(struct usb_gadget *_gadget, int value)
unsigned long flags;
dum = gadget_dev_to_dummy(&_gadget->dev);
if (value && dum->driver) {
if (mod_data.is_super_speed)
dum->gadget.speed = dum->driver->max_speed;
else if (mod_data.is_high_speed)
dum->gadget.speed = min_t(u8, USB_SPEED_HIGH,
dum->driver->max_speed);
else
dum->gadget.speed = USB_SPEED_FULL;
dummy_udc_update_ep0(dum);
if (dum->gadget.speed < dum->driver->max_speed)
dev_dbg(udc_dev(dum), "This device can perform faster"
" if you connect it to a %s port...\n",
usb_speed_string(dum->driver->max_speed));
}
dum_hcd = gadget_to_dummy_hcd(_gadget);
spin_lock_irqsave(&dum->lock, flags);
@ -908,6 +892,28 @@ static int dummy_pullup(struct usb_gadget *_gadget, int value)
return 0;
}
static void dummy_udc_set_speed(struct usb_gadget *_gadget,
enum usb_device_speed speed)
{
struct dummy *dum;
dum = gadget_dev_to_dummy(&_gadget->dev);
if (mod_data.is_super_speed)
dum->gadget.speed = min_t(u8, USB_SPEED_SUPER, speed);
else if (mod_data.is_high_speed)
dum->gadget.speed = min_t(u8, USB_SPEED_HIGH, speed);
else
dum->gadget.speed = USB_SPEED_FULL;
dummy_udc_update_ep0(dum);
if (dum->gadget.speed < speed)
dev_dbg(udc_dev(dum), "This device can perform faster"
" if you connect it to a %s port...\n",
usb_speed_string(speed));
}
static int dummy_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
static int dummy_udc_stop(struct usb_gadget *g);
@ -919,6 +925,7 @@ static const struct usb_gadget_ops dummy_ops = {
.pullup = dummy_pullup,
.udc_start = dummy_udc_start,
.udc_stop = dummy_udc_stop,
.udc_set_speed = dummy_udc_set_speed,
};
/*-------------------------------------------------------------------------*/

9
drivers/usb/gadget/udc/mv_udc_core.c
View File

@ -960,9 +960,9 @@ static const struct usb_ep_ops mv_ep_ops = {
.fifo_flush = mv_ep_fifo_flush, /* flush fifo */
};
static void udc_clock_enable(struct mv_udc *udc)
static int udc_clock_enable(struct mv_udc *udc)
{
clk_prepare_enable(udc->clk);
return clk_prepare_enable(udc->clk);
}
static void udc_clock_disable(struct mv_udc *udc)
@ -1070,7 +1070,10 @@ static int mv_udc_enable_internal(struct mv_udc *udc)
return 0;
dev_dbg(&udc->dev->dev, "enable udc\n");
udc_clock_enable(udc);
retval = udc_clock_enable(udc);
if (retval)
return retval;
if (udc->pdata->phy_init) {
retval = udc->pdata->phy_init(udc->phy_regs);
if (retval) {

5
drivers/usb/gadget/udc/net2280.c
View File

@ -3566,7 +3566,6 @@ static void net2280_remove(struct pci_dev *pdev)
BUG_ON(dev->driver);
/* then clean up the resources we allocated during probe() */
net2280_led_shutdown(dev);
if (dev->requests) {
int i;
for (i = 1; i < 5; i++) {
@ -3581,8 +3580,10 @@ static void net2280_remove(struct pci_dev *pdev)
free_irq(pdev->irq, dev);
if (dev->quirks & PLX_PCIE)
pci_disable_msi(pdev);
if (dev->regs)
if (dev->regs) {
net2280_led_shutdown(dev);
iounmap(dev->regs);
}
if (dev->region)
release_mem_region(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));

392
drivers/usb/gadget/udc/renesas_usb3.c
View File

@ -9,6 +9,7 @@
*/
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/err.h>
#include <linux/extcon.h>
#include <linux/interrupt.h>
@ -27,6 +28,8 @@
#define USB3_AXI_INT_ENA 0x00c
#define USB3_DMA_INT_STA 0x010
#define USB3_DMA_INT_ENA 0x014
#define USB3_DMA_CH0_CON(n) (0x030 + ((n) - 1) * 0x10) /* n = 1 to 4 */
#define USB3_DMA_CH0_PRD_ADR(n) (0x034 + ((n) - 1) * 0x10) /* n = 1 to 4 */
#define USB3_USB_COM_CON 0x200
#define USB3_USB20_CON 0x204
#define USB3_USB30_CON 0x208
@ -64,6 +67,22 @@
/* AXI_INT_ENA and AXI_INT_STA */
#define AXI_INT_DMAINT BIT(31)
#define AXI_INT_EPCINT BIT(30)
/* PRD's n = from 1 to 4 */
#define AXI_INT_PRDEN_CLR_STA_SHIFT(n) (16 + (n) - 1)
#define AXI_INT_PRDERR_STA_SHIFT(n) (0 + (n) - 1)
#define AXI_INT_PRDEN_CLR_STA(n) (1 << AXI_INT_PRDEN_CLR_STA_SHIFT(n))
#define AXI_INT_PRDERR_STA(n) (1 << AXI_INT_PRDERR_STA_SHIFT(n))
/* DMA_INT_ENA and DMA_INT_STA */
#define DMA_INT(n) BIT(n)
/* DMA_CH0_CONn */
#define DMA_CON_PIPE_DIR BIT(15) /* 1: In Transfer */
#define DMA_CON_PIPE_NO_SHIFT 8
#define DMA_CON_PIPE_NO_MASK GENMASK(12, DMA_CON_PIPE_NO_SHIFT)
#define DMA_COM_PIPE_NO(n) (((n) << DMA_CON_PIPE_NO_SHIFT) & \
DMA_CON_PIPE_NO_MASK)
#define DMA_CON_PRD_EN BIT(0)
/* LCLKSEL */
#define LCLKSEL_LSEL BIT(18)
@ -231,8 +250,50 @@
#define USB3_EP0_BUF_SIZE 8
#define USB3_MAX_NUM_PIPES 30
#define USB3_WAIT_US 3
#define USB3_DMA_NUM_SETTING_AREA 4
/*
* To avoid double-meaning of "0" (xferred 65536 bytes or received zlp if
* buffer size is 65536), this driver uses the maximum size per a entry is
* 32768 bytes.
*/
#define USB3_DMA_MAX_XFER_SIZE 32768
#define USB3_DMA_PRD_SIZE 4096
struct renesas_usb3;
/* Physical Region Descriptor Table */
struct renesas_usb3_prd {
u32 word1;
#define USB3_PRD1_E BIT(30) /* the end of chain */
#define USB3_PRD1_U BIT(29) /* completion of transfer */
#define USB3_PRD1_D BIT(28) /* Error occurred */
#define USB3_PRD1_INT BIT(27) /* Interrupt occurred */
#define USB3_PRD1_LST BIT(26) /* Last Packet */
#define USB3_PRD1_B_INC BIT(24)
#define USB3_PRD1_MPS_8 0
#define USB3_PRD1_MPS_16 BIT(21)
#define USB3_PRD1_MPS_32 BIT(22)
#define USB3_PRD1_MPS_64 (BIT(22) | BIT(21))
#define USB3_PRD1_MPS_512 BIT(23)
#define USB3_PRD1_MPS_1024 (BIT(23) | BIT(21))
#define USB3_PRD1_MPS_RESERVED (BIT(23) | BIT(22) | BIT(21))
#define USB3_PRD1_SIZE_MASK GENMASK(15, 0)
u32 bap;
};
#define USB3_DMA_NUM_PRD_ENTRIES (USB3_DMA_PRD_SIZE / \
sizeof(struct renesas_usb3_prd))
#define USB3_DMA_MAX_XFER_SIZE_ALL_PRDS (USB3_DMA_PRD_SIZE / \
sizeof(struct renesas_usb3_prd) * \
USB3_DMA_MAX_XFER_SIZE)
struct renesas_usb3_dma {
struct renesas_usb3_prd *prd;
dma_addr_t prd_dma;
int num; /* Setting area number (from 1 to 4) */
bool used;
};
struct renesas_usb3_request {
struct usb_request req;
struct list_head queue;
@ -242,6 +303,7 @@ struct renesas_usb3_request {
struct renesas_usb3_ep {
struct usb_ep ep;
struct renesas_usb3 *usb3;
struct renesas_usb3_dma *dma;
int num;
char ep_name[USB3_EP_NAME_SIZE];
struct list_head queue;
@ -270,6 +332,8 @@ struct renesas_usb3 {
struct renesas_usb3_ep *usb3_ep;
int num_usb3_eps;
struct renesas_usb3_dma dma[USB3_DMA_NUM_SETTING_AREA];
spinlock_t lock;
int disabled_count;
@ -298,8 +362,18 @@ struct renesas_usb3 {
(i) < (usb3)->num_usb3_eps; \
(i)++, usb3_ep = usb3_get_ep(usb3, (i)))
#define usb3_get_dma(usb3, i) (&(usb3)->dma[i])
#define usb3_for_each_dma(usb3, dma, i) \
for ((i) = 0, dma = usb3_get_dma((usb3), (i)); \
(i) < USB3_DMA_NUM_SETTING_AREA; \
(i)++, dma = usb3_get_dma((usb3), (i)))
static const char udc_name[] = "renesas_usb3";
static bool use_dma = 1;
module_param(use_dma, bool, 0644);
MODULE_PARM_DESC(use_dma, "use dedicated DMAC");
static void usb3_write(struct renesas_usb3 *usb3, u32 data, u32 offs)
{
iowrite32(data, usb3->reg + offs);
@ -1059,6 +1133,273 @@ static void usb3_start_pipe0(struct renesas_usb3_ep *usb3_ep,
usb3_p0_xfer(usb3_ep, usb3_req);
}
static void usb3_enable_dma_pipen(struct renesas_usb3 *usb3)
{
usb3_set_bit(usb3, PN_CON_DATAIF_EN, USB3_PN_CON);
}
static void usb3_disable_dma_pipen(struct renesas_usb3 *usb3)
{
usb3_clear_bit(usb3, PN_CON_DATAIF_EN, USB3_PN_CON);
}
static void usb3_enable_dma_irq(struct renesas_usb3 *usb3, int num)
{
usb3_set_bit(usb3, DMA_INT(num), USB3_DMA_INT_ENA);
}
static void usb3_disable_dma_irq(struct renesas_usb3 *usb3, int num)
{
usb3_clear_bit(usb3, DMA_INT(num), USB3_DMA_INT_ENA);
}
static u32 usb3_dma_mps_to_prd_word1(struct renesas_usb3_ep *usb3_ep)
{
switch (usb3_ep->ep.maxpacket) {
case 8:
return USB3_PRD1_MPS_8;
case 16:
return USB3_PRD1_MPS_16;
case 32:
return USB3_PRD1_MPS_32;
case 64:
return USB3_PRD1_MPS_64;
case 512:
return USB3_PRD1_MPS_512;
case 1024:
return USB3_PRD1_MPS_1024;
default:
return USB3_PRD1_MPS_RESERVED;
}
}
static bool usb3_dma_get_setting_area(struct renesas_usb3_ep *usb3_ep,
struct renesas_usb3_request *usb3_req)
{
struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
struct renesas_usb3_dma *dma;
int i;
bool ret = false;
if (usb3_req->req.length > USB3_DMA_MAX_XFER_SIZE_ALL_PRDS) {
dev_dbg(usb3_to_dev(usb3), "%s: the length is too big (%d)\n",
__func__, usb3_req->req.length);
return false;
}
/* The driver doesn't handle zero-length packet via dmac */
if (!usb3_req->req.length)
return false;
if (usb3_dma_mps_to_prd_word1(usb3_ep) == USB3_PRD1_MPS_RESERVED)
return false;
usb3_for_each_dma(usb3, dma, i) {
if (dma->used)
continue;
if (usb_gadget_map_request(&usb3->gadget, &usb3_req->req,
usb3_ep->dir_in) < 0)
break;
dma->used = true;
usb3_ep->dma = dma;
ret = true;
break;
}
return ret;
}
static void usb3_dma_put_setting_area(struct renesas_usb3_ep *usb3_ep,
struct renesas_usb3_request *usb3_req)
{
struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
int i;
struct renesas_usb3_dma *dma;
usb3_for_each_dma(usb3, dma, i) {
if (usb3_ep->dma == dma) {
usb_gadget_unmap_request(&usb3->gadget, &usb3_req->req,
usb3_ep->dir_in);
dma->used = false;
usb3_ep->dma = NULL;
break;
}
}
}
static void usb3_dma_fill_prd(struct renesas_usb3_ep *usb3_ep,
struct renesas_usb3_request *usb3_req)
{
struct renesas_usb3_prd *cur_prd = usb3_ep->dma->prd;
u32 remain = usb3_req->req.length;
u32 dma = usb3_req->req.dma;
u32 len;
int i = 0;
do {
len = min_t(u32, remain, USB3_DMA_MAX_XFER_SIZE) &
USB3_PRD1_SIZE_MASK;
cur_prd->word1 = usb3_dma_mps_to_prd_word1(usb3_ep) |
USB3_PRD1_B_INC | len;
cur_prd->bap = dma;
remain -= len;
dma += len;
if (!remain || (i + 1) < USB3_DMA_NUM_PRD_ENTRIES)
break;
cur_prd++;
i++;
} while (1);
cur_prd->word1 |= USB3_PRD1_E | USB3_PRD1_INT;
if (usb3_ep->dir_in)
cur_prd->word1 |= USB3_PRD1_LST;
}
static void usb3_dma_kick_prd(struct renesas_usb3_ep *usb3_ep)
{
struct renesas_usb3_dma *dma = usb3_ep->dma;
struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
u32 dma_con = DMA_COM_PIPE_NO(usb3_ep->num) | DMA_CON_PRD_EN;
if (usb3_ep->dir_in)
dma_con |= DMA_CON_PIPE_DIR;
wmb(); /* prd entries should be in system memory here */
usb3_write(usb3, 1 << usb3_ep->num, USB3_DMA_INT_STA);
usb3_write(usb3, AXI_INT_PRDEN_CLR_STA(dma->num) |
AXI_INT_PRDERR_STA(dma->num), USB3_AXI_INT_STA);
usb3_write(usb3, dma->prd_dma, USB3_DMA_CH0_PRD_ADR(dma->num));
usb3_write(usb3, dma_con, USB3_DMA_CH0_CON(dma->num));
usb3_enable_dma_irq(usb3, usb3_ep->num);
}
static void usb3_dma_stop_prd(struct renesas_usb3_ep *usb3_ep)
{
struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
struct renesas_usb3_dma *dma = usb3_ep->dma;
usb3_disable_dma_irq(usb3, usb3_ep->num);
usb3_write(usb3, 0, USB3_DMA_CH0_CON(dma->num));
}
static int usb3_dma_update_status(struct renesas_usb3_ep *usb3_ep,
struct renesas_usb3_request *usb3_req)
{
struct renesas_usb3_prd *cur_prd = usb3_ep->dma->prd;
struct usb_request *req = &usb3_req->req;
u32 remain, len;
int i = 0;
int status = 0;
rmb(); /* The controller updated prd entries */
do {
if (cur_prd->word1 & USB3_PRD1_D)
status = -EIO;
if (cur_prd->word1 & USB3_PRD1_E)
len = req->length % USB3_DMA_MAX_XFER_SIZE;
else
len = USB3_DMA_MAX_XFER_SIZE;
remain = cur_prd->word1 & USB3_PRD1_SIZE_MASK;
req->actual += len - remain;
if (cur_prd->word1 & USB3_PRD1_E ||
(i + 1) < USB3_DMA_NUM_PRD_ENTRIES)
break;
cur_prd++;
i++;
} while (1);
return status;
}
static bool usb3_dma_try_start(struct renesas_usb3_ep *usb3_ep,
struct renesas_usb3_request *usb3_req)
{
struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
if (!use_dma)
return false;
if (usb3_dma_get_setting_area(usb3_ep, usb3_req)) {
usb3_pn_stop(usb3);
usb3_enable_dma_pipen(usb3);
usb3_dma_fill_prd(usb3_ep, usb3_req);
usb3_dma_kick_prd(usb3_ep);
usb3_pn_start(usb3);
return true;
}
return false;
}
static int usb3_dma_try_stop(struct renesas_usb3_ep *usb3_ep,
struct renesas_usb3_request *usb3_req)
{
struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
unsigned long flags;
int status = 0;
spin_lock_irqsave(&usb3->lock, flags);
if (!usb3_ep->dma)
goto out;
if (!usb3_pn_change(usb3, usb3_ep->num))
usb3_disable_dma_pipen(usb3);
usb3_dma_stop_prd(usb3_ep);
status = usb3_dma_update_status(usb3_ep, usb3_req);
usb3_dma_put_setting_area(usb3_ep, usb3_req);
out:
spin_unlock_irqrestore(&usb3->lock, flags);
return status;
}
static int renesas_usb3_dma_free_prd(struct renesas_usb3 *usb3,
struct device *dev)
{
int i;
struct renesas_usb3_dma *dma;
usb3_for_each_dma(usb3, dma, i) {
if (dma->prd) {
dma_free_coherent(dev, USB3_DMA_MAX_XFER_SIZE,
dma->prd, dma->prd_dma);
dma->prd = NULL;
}
}
return 0;
}
static int renesas_usb3_dma_alloc_prd(struct renesas_usb3 *usb3,
struct device *dev)
{
int i;
struct renesas_usb3_dma *dma;
if (!use_dma)
return 0;
usb3_for_each_dma(usb3, dma, i) {
dma->prd = dma_alloc_coherent(dev, USB3_DMA_PRD_SIZE,
&dma->prd_dma, GFP_KERNEL);
if (!dma->prd) {
renesas_usb3_dma_free_prd(usb3, dev);
return -ENOMEM;
}
dma->num = i + 1;
}
return 0;
}
static void usb3_start_pipen(struct renesas_usb3_ep *usb3_ep,
struct renesas_usb3_request *usb3_req)
{
@ -1078,6 +1419,10 @@ static void usb3_start_pipen(struct renesas_usb3_ep *usb3_ep,
goto out;
usb3_ep->started = true;
if (usb3_dma_try_start(usb3_ep, usb3_req))
goto out;
usb3_pn_start(usb3);
if (usb3_ep->dir_in) {
@ -1603,12 +1948,49 @@ static void usb3_irq_epc(struct renesas_usb3 *usb3)
}
}
static void usb3_irq_dma_int(struct renesas_usb3 *usb3, u32 dma_sta)
{
struct renesas_usb3_ep *usb3_ep;
struct renesas_usb3_request *usb3_req;
int i, status;
for (i = 0; i < usb3->num_usb3_eps; i++) {
if (!(dma_sta & DMA_INT(i)))
continue;
usb3_ep = usb3_get_ep(usb3, i);
if (!(usb3_read(usb3, USB3_AXI_INT_STA) &
AXI_INT_PRDEN_CLR_STA(usb3_ep->dma->num)))
continue;
usb3_req = usb3_get_request(usb3_ep);
status = usb3_dma_try_stop(usb3_ep, usb3_req);
usb3_request_done_pipen(usb3, usb3_ep, usb3_req, status);
}
}
static void usb3_irq_dma(struct renesas_usb3 *usb3)
{
u32 dma_sta = usb3_read(usb3, USB3_DMA_INT_STA);
dma_sta &= usb3_read(usb3, USB3_DMA_INT_ENA);
if (dma_sta) {
usb3_write(usb3, dma_sta, USB3_DMA_INT_STA);
usb3_irq_dma_int(usb3, dma_sta);
}
}
static irqreturn_t renesas_usb3_irq(int irq, void *_usb3)
{
struct renesas_usb3 *usb3 = _usb3;
irqreturn_t ret = IRQ_NONE;
u32 axi_int_sta = usb3_read(usb3, USB3_AXI_INT_STA);
if (axi_int_sta & AXI_INT_DMAINT) {
usb3_irq_dma(usb3);
ret = IRQ_HANDLED;
}
if (axi_int_sta & AXI_INT_EPCINT) {
usb3_irq_epc(usb3);
ret = IRQ_HANDLED;
@ -1708,6 +2090,7 @@ static int renesas_usb3_ep_disable(struct usb_ep *_ep)
usb3_req = usb3_get_request(usb3_ep);
if (!usb3_req)
break;
usb3_dma_try_stop(usb3_ep, usb3_req);
usb3_request_done(usb3_ep, usb3_req, -ESHUTDOWN);
} while (1);
@ -1755,6 +2138,7 @@ static int renesas_usb3_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
dev_dbg(usb3_to_dev(usb3), "ep_dequeue: ep%2d, %u\n", usb3_ep->num,
_req->length);
usb3_dma_try_stop(usb3_ep, usb3_req);
usb3_request_done_pipen(usb3, usb3_ep, usb3_req, -ECONNRESET);
return 0;
@ -1917,6 +2301,7 @@ static int renesas_usb3_remove(struct platform_device *pdev)
device_remove_file(&pdev->dev, &dev_attr_role);
usb_del_gadget_udc(&usb3->gadget);
renesas_usb3_dma_free_prd(usb3, &pdev->dev);
__renesas_usb3_ep_free_request(usb3->ep0_req);
@ -2111,6 +2496,10 @@ static int renesas_usb3_probe(struct platform_device *pdev)
if (!usb3->ep0_req)
return -ENOMEM;
ret = renesas_usb3_dma_alloc_prd(usb3, &pdev->dev);
if (ret < 0)
goto err_alloc_prd;
ret = usb_add_gadget_udc(&pdev->dev, &usb3->gadget);
if (ret < 0)
goto err_add_udc;
@ -2129,6 +2518,9 @@ static int renesas_usb3_probe(struct platform_device *pdev)
usb_del_gadget_udc(&usb3->gadget);
err_add_udc:
renesas_usb3_dma_free_prd(usb3, &pdev->dev);
err_alloc_prd:
__renesas_usb3_ep_free_request(usb3->ep0_req);
return ret;

80
drivers/usb/gadget/udc/amd5536udc.c → drivers/usb/gadget/udc/snps_udc_core.c
View File

@ -41,7 +41,6 @@
#include "amd5536udc.h"
static void udc_tasklet_disconnect(unsigned long);
static void empty_req_queue(struct udc_ep *);
static void udc_setup_endpoints(struct udc *dev);
static void udc_soft_reset(struct udc *dev);
static struct udc_request *udc_alloc_bna_dummy(struct udc_ep *ep);
@ -209,18 +208,18 @@ static void print_regs(struct udc *dev)
if (use_dma && use_dma_ppb && !use_dma_ppb_du) {
DBG(dev, "DMA mode = PPBNDU (packet per buffer "
"WITHOUT desc. update)\n");
dev_info(&dev->pdev->dev, "DMA mode (%s)\n", "PPBNDU");
dev_info(dev->dev, "DMA mode (%s)\n", "PPBNDU");
} else if (use_dma && use_dma_ppb && use_dma_ppb_du) {
DBG(dev, "DMA mode = PPBDU (packet per buffer "
"WITH desc. update)\n");
dev_info(&dev->pdev->dev, "DMA mode (%s)\n", "PPBDU");
dev_info(dev->dev, "DMA mode (%s)\n", "PPBDU");
}
if (use_dma && use_dma_bufferfill_mode) {
DBG(dev, "DMA mode = BF (buffer fill mode)\n");
dev_info(&dev->pdev->dev, "DMA mode (%s)\n", "BF");
dev_info(dev->dev, "DMA mode (%s)\n", "BF");
}
if (!use_dma)
dev_info(&dev->pdev->dev, "FIFO mode\n");
dev_info(dev->dev, "FIFO mode\n");
DBG(dev, "-------------------------------------------------------\n");
}
@ -1244,7 +1243,7 @@ udc_queue(struct usb_ep *usbep, struct usb_request *usbreq, gfp_t gfp)
}
/* Empty request queue of an endpoint; caller holds spinlock */
static void empty_req_queue(struct udc_ep *ep)
void empty_req_queue(struct udc_ep *ep)
{
struct udc_request *req;
@ -1256,6 +1255,7 @@ static void empty_req_queue(struct udc_ep *ep)
complete_req(ep, req, -ESHUTDOWN);
}
}
EXPORT_SYMBOL_GPL(empty_req_queue);
/* Dequeues a request packet, called by gadget driver */
static int udc_dequeue(struct usb_ep *usbep, struct usb_request *usbreq)
@ -1623,8 +1623,11 @@ static void udc_setup_endpoints(struct udc *dev)
/* Bringup after Connect event, initial bringup to be ready for ep0 events */
static void usb_connect(struct udc *dev)
{
/* Return if already connected */
if (dev->connected)
return;
dev_info(&dev->pdev->dev, "USB Connect\n");
dev_info(dev->dev, "USB Connect\n");
dev->connected = 1;
@ -1641,8 +1644,11 @@ static void usb_connect(struct udc *dev)
*/
static void usb_disconnect(struct udc *dev)
{
/* Return if already disconnected */
if (!dev->connected)
return;
dev_info(&dev->pdev->dev, "USB Disconnect\n");
dev_info(dev->dev, "USB Disconnect\n");
dev->connected = 0;
@ -1715,11 +1721,15 @@ static void udc_soft_reset(struct udc *dev)
/* device int. status reset */
writel(UDC_DEV_MSK_DISABLE, &dev->regs->irqsts);
spin_lock_irqsave(&udc_irq_spinlock, flags);
writel(AMD_BIT(UDC_DEVCFG_SOFTRESET), &dev->regs->cfg);
readl(&dev->regs->cfg);
spin_unlock_irqrestore(&udc_irq_spinlock, flags);
/* Don't do this for Broadcom UDC since this is a reserved
* bit.
*/
if (dev->chiprev != UDC_BCM_REV) {
spin_lock_irqsave(&udc_irq_spinlock, flags);
writel(AMD_BIT(UDC_DEVCFG_SOFTRESET), &dev->regs->cfg);
readl(&dev->regs->cfg);
spin_unlock_irqrestore(&udc_irq_spinlock, flags);
}
}
/* RDE timer callback to set RDE bit */
@ -2106,7 +2116,7 @@ static irqreturn_t udc_data_out_isr(struct udc *dev, int ep_ix)
}
/* HE event ? */
if (tmp & AMD_BIT(UDC_EPSTS_HE)) {
dev_err(&dev->pdev->dev, "HE ep%dout occurred\n", ep->num);
dev_err(dev->dev, "HE ep%dout occurred\n", ep->num);
/* clear HE */
writel(tmp | AMD_BIT(UDC_EPSTS_HE), &ep->regs->sts);
@ -2305,7 +2315,7 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix)
if (use_dma) {
/* BNA ? */
if (epsts & AMD_BIT(UDC_EPSTS_BNA)) {
dev_err(&dev->pdev->dev,
dev_err(dev->dev,
"BNA ep%din occurred - DESPTR = %08lx\n",
ep->num,
(unsigned long) readl(&ep->regs->desptr));
@ -2318,7 +2328,7 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix)
}
/* HE event ? */
if (epsts & AMD_BIT(UDC_EPSTS_HE)) {
dev_err(&dev->pdev->dev,
dev_err(dev->dev,
"HE ep%dn occurred - DESPTR = %08lx\n",
ep->num, (unsigned long) readl(&ep->regs->desptr));
@ -2956,7 +2966,7 @@ __acquires(dev->lock)
/* link up all endpoints */
udc_setup_endpoints(dev);
dev_info(&dev->pdev->dev, "Connect: %s\n",
dev_info(dev->dev, "Connect: %s\n",
usb_speed_string(dev->gadget.speed));
/* init ep 0 */
@ -3097,7 +3107,7 @@ int init_dma_pools(struct udc *dev)
}
/* DMA setup */
dev->data_requests = dma_pool_create("data_requests", NULL,
dev->data_requests = dma_pool_create("data_requests", dev->dev,
sizeof(struct udc_data_dma), 0, 0);
if (!dev->data_requests) {
DBG(dev, "can't get request data pool\n");
@ -3108,7 +3118,7 @@ int init_dma_pools(struct udc *dev)
dev->ep[UDC_EP0IN_IX].dma = &dev->regs->ctl;
/* dma desc for setup data */
dev->stp_requests = dma_pool_create("setup requests", NULL,
dev->stp_requests = dma_pool_create("setup requests", dev->dev,
sizeof(struct udc_stp_dma), 0, 0);
if (!dev->stp_requests) {
DBG(dev, "can't get stp request pool\n");
@ -3168,24 +3178,30 @@ int udc_probe(struct udc *dev)
/* init registers, interrupts, ... */
startup_registers(dev);
dev_info(&dev->pdev->dev, "%s\n", mod_desc);
dev_info(dev->dev, "%s\n", mod_desc);
snprintf(tmp, sizeof(tmp), "%d", dev->irq);
dev_info(&dev->pdev->dev,
"irq %s, pci mem %08lx, chip rev %02x(Geode5536 %s)\n",
tmp, dev->phys_addr, dev->chiprev,
(dev->chiprev == UDC_HSA0_REV) ? "A0" : "B1");
strcpy(tmp, UDC_DRIVER_VERSION_STRING);
if (dev->chiprev == UDC_HSA0_REV) {
dev_err(&dev->pdev->dev, "chip revision is A0; too old\n");
retval = -ENODEV;
goto finished;
/* Print this device info for AMD chips only*/
if (dev->chiprev == UDC_HSA0_REV ||
dev->chiprev == UDC_HSB1_REV) {
dev_info(dev->dev, "irq %s, pci mem %08lx, chip rev %02x(Geode5536 %s)\n",
tmp, dev->phys_addr, dev->chiprev,
(dev->chiprev == UDC_HSA0_REV) ?
"A0" : "B1");
strcpy(tmp, UDC_DRIVER_VERSION_STRING);
if (dev->chiprev == UDC_HSA0_REV) {
dev_err(dev->dev, "chip revision is A0; too old\n");
retval = -ENODEV;
goto finished;
}
dev_info(dev->dev,
"driver version: %s(for Geode5536 B1)\n", tmp);
}
dev_info(&dev->pdev->dev,
"driver version: %s(for Geode5536 B1)\n", tmp);
udc = dev;
retval = usb_add_gadget_udc_release(&udc->pdev->dev, &dev->gadget,
retval = usb_add_gadget_udc_release(udc->dev, &dev->gadget,
gadget_release);
if (retval)
goto finished;

344
drivers/usb/gadget/udc/snps_udc_plat.c Normal file
View File

@ -0,0 +1,344 @@
/*
* snps_udc_plat.c - Synopsys UDC Platform Driver
*
* Copyright (C) 2016 Broadcom
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/extcon.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/phy/phy.h>
#include <linux/module.h>
#include <linux/dmapool.h>
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include "amd5536udc.h"
/* description */
#define UDC_MOD_DESCRIPTION "Synopsys UDC platform driver"
void start_udc(struct udc *udc)
{
if (udc->driver) {
dev_info(udc->dev, "Connecting...\n");
udc_enable_dev_setup_interrupts(udc);
udc_basic_init(udc);
udc->connected = 1;
}
}
void stop_udc(struct udc *udc)
{
int tmp;
u32 reg;
spin_lock(&udc->lock);
/* Flush the receieve fifo */
reg = readl(&udc->regs->ctl);
reg |= AMD_BIT(UDC_DEVCTL_SRX_FLUSH);
writel(reg, &udc->regs->ctl);
reg = readl(&udc->regs->ctl);
reg &= ~(AMD_BIT(UDC_DEVCTL_SRX_FLUSH));
writel(reg, &udc->regs->ctl);
dev_dbg(udc->dev, "ep rx queue flushed\n");
/* Mask interrupts. Required more so when the
* UDC is connected to a DRD phy.
*/
udc_mask_unused_interrupts(udc);
/* Disconnect gadget driver */
if (udc->driver) {
spin_unlock(&udc->lock);
udc->driver->disconnect(&udc->gadget);
spin_lock(&udc->lock);
/* empty queues */
for (tmp = 0; tmp < UDC_EP_NUM; tmp++)
empty_req_queue(&udc->ep[tmp]);
}
udc->connected = 0;
spin_unlock(&udc->lock);
dev_info(udc->dev, "Device disconnected\n");
}
void udc_drd_work(struct work_struct *work)
{
struct udc *udc;
udc = container_of(to_delayed_work(work),
struct udc, drd_work);
if (udc->conn_type) {
dev_dbg(udc->dev, "idle -> device\n");
start_udc(udc);
} else {
dev_dbg(udc->dev, "device -> idle\n");
stop_udc(udc);
}
}
static int usbd_connect_notify(struct notifier_block *self,
unsigned long event, void *ptr)
{
struct udc *udc = container_of(self, struct udc, nb);
dev_dbg(udc->dev, "%s: event: %lu\n", __func__, event);
udc->conn_type = event;
schedule_delayed_work(&udc->drd_work, 0);
return NOTIFY_OK;
}
static int udc_plat_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
struct udc *udc;
int ret;
udc = devm_kzalloc(dev, sizeof(*udc), GFP_KERNEL);
if (!udc)
return -ENOMEM;
spin_lock_init(&udc->lock);
udc->dev = dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
udc->virt_addr = devm_ioremap_resource(dev, res);
if (IS_ERR(udc->regs))
return PTR_ERR(udc->regs);
/* udc csr registers base */
udc->csr = udc->virt_addr + UDC_CSR_ADDR;
/* dev registers base */
udc->regs = udc->virt_addr + UDC_DEVCFG_ADDR;
/* ep registers base */
udc->ep_regs = udc->virt_addr + UDC_EPREGS_ADDR;
/* fifo's base */
udc->rxfifo = (u32 __iomem *)(udc->virt_addr + UDC_RXFIFO_ADDR);
udc->txfifo = (u32 __iomem *)(udc->virt_addr + UDC_TXFIFO_ADDR);
udc->phys_addr = (unsigned long)res->start;
udc->irq = irq_of_parse_and_map(dev->of_node, 0);
if (udc->irq <= 0) {
dev_err(dev, "Can't parse and map interrupt\n");
return -EINVAL;
}
udc->udc_phy = devm_of_phy_get_by_index(dev, dev->of_node, 0);
if (IS_ERR(udc->udc_phy)) {
dev_err(dev, "Failed to obtain phy from device tree\n");
return PTR_ERR(udc->udc_phy);
}
ret = phy_init(udc->udc_phy);
if (ret) {
dev_err(dev, "UDC phy init failed");
return ret;
}
ret = phy_power_on(udc->udc_phy);
if (ret) {
dev_err(dev, "UDC phy power on failed");
phy_exit(udc->udc_phy);
return ret;
}
/* Register for extcon if supported */
if (of_get_property(dev->of_node, "extcon", NULL)) {
udc->edev = extcon_get_edev_by_phandle(dev, 0);
if (IS_ERR(udc->edev)) {
if (PTR_ERR(udc->edev) == -EPROBE_DEFER)
return -EPROBE_DEFER;
dev_err(dev, "Invalid or missing extcon\n");
ret = PTR_ERR(udc->edev);
goto exit_phy;
}
udc->nb.notifier_call = usbd_connect_notify;
ret = extcon_register_notifier(udc->edev, EXTCON_USB,
&udc->nb);
if (ret < 0) {
dev_err(dev, "Can't register extcon device\n");
goto exit_phy;
}
ret = extcon_get_cable_state_(udc->edev, EXTCON_USB);
if (ret < 0) {
dev_err(dev, "Can't get cable state\n");
goto exit_extcon;
} else if (ret) {
udc->conn_type = ret;
}
INIT_DELAYED_WORK(&udc->drd_work, udc_drd_work);
}
/* init dma pools */
if (use_dma) {
ret = init_dma_pools(udc);
if (ret != 0)
goto exit_extcon;
}
ret = devm_request_irq(dev, udc->irq, udc_irq, IRQF_SHARED,
"snps-udc", udc);
if (ret < 0) {
dev_err(dev, "Request irq %d failed for UDC\n", udc->irq);
goto exit_dma;
}
platform_set_drvdata(pdev, udc);
udc->chiprev = UDC_BCM_REV;
if (udc_probe(udc)) {
ret = -ENODEV;
goto exit_dma;
}
dev_info(dev, "Synopsys UDC platform driver probe successful\n");
return 0;
exit_dma:
if (use_dma)
free_dma_pools(udc);
exit_extcon:
if (udc->edev)
extcon_unregister_notifier(udc->edev, EXTCON_USB, &udc->nb);
exit_phy:
if (udc->udc_phy) {
phy_power_off(udc->udc_phy);
phy_exit(udc->udc_phy);
}
return ret;
}
static int udc_plat_remove(struct platform_device *pdev)
{
struct udc *dev;
dev = platform_get_drvdata(pdev);
usb_del_gadget_udc(&dev->gadget);
/* gadget driver must not be registered */
if (WARN_ON(dev->driver))
return 0;
/* dma pool cleanup */
free_dma_pools(dev);
udc_remove(dev);
platform_set_drvdata(pdev, NULL);
if (dev->drd_wq) {
flush_workqueue(dev->drd_wq);
destroy_workqueue(dev->drd_wq);
}
phy_power_off(dev->udc_phy);
phy_exit(dev->udc_phy);
extcon_unregister_notifier(dev->edev, EXTCON_USB, &dev->nb);
dev_info(&pdev->dev, "Synopsys UDC platform driver removed\n");
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int udc_plat_suspend(struct device *dev)
{
struct udc *udc;
udc = dev_get_drvdata(dev);
stop_udc(udc);
if (extcon_get_cable_state_(udc->edev, EXTCON_USB) > 0) {
dev_dbg(udc->dev, "device -> idle\n");
stop_udc(udc);
}
phy_power_off(udc->udc_phy);
phy_exit(udc->udc_phy);
return 0;
}
static int udc_plat_resume(struct device *dev)
{
struct udc *udc;
int ret;
udc = dev_get_drvdata(dev);
ret = phy_init(udc->udc_phy);
if (ret) {
dev_err(udc->dev, "UDC phy init failure");
return ret;
}
ret = phy_power_on(udc->udc_phy);
if (ret) {
dev_err(udc->dev, "UDC phy power on failure");
phy_exit(udc->udc_phy);
return ret;
}
if (extcon_get_cable_state_(udc->edev, EXTCON_USB) > 0) {
dev_dbg(udc->dev, "idle -> device\n");
start_udc(udc);
}
return 0;
}
static const struct dev_pm_ops udc_plat_pm_ops = {
.suspend = udc_plat_suspend,
.resume = udc_plat_resume,
};
#endif
#if defined(CONFIG_OF)
static const struct of_device_id of_udc_match[] = {
{ .compatible = "brcm,ns2-udc", },
{ .compatible = "brcm,cygnus-udc", },
{ .compatible = "brcm,iproc-udc", },
{ }
};
MODULE_DEVICE_TABLE(of, of_udc_match);
#endif
static struct platform_driver udc_plat_driver = {
.probe = udc_plat_probe,
.remove = udc_plat_remove,
.driver = {
.name = "snps-udc-plat",
.of_match_table = of_match_ptr(of_udc_match),
#ifdef CONFIG_PM_SLEEP
.pm = &udc_plat_pm_ops,
#endif
},
};
module_platform_driver(udc_plat_driver);
MODULE_DESCRIPTION(UDC_MOD_DESCRIPTION);
MODULE_AUTHOR("Broadcom");
MODULE_LICENSE("GPL v2");

2
drivers/usb/gadget/udc/udc-xilinx.c
View File

@ -1151,7 +1151,7 @@ static int xudc_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
break;
}
if (&req->usb_req != _req) {
spin_unlock_irqrestore(&ep->udc->lock, flags);
spin_unlock_irqrestore(&udc->lock, flags);
return -EINVAL;
}
xudc_done(ep, req, -ECONNRESET);

6
drivers/usb/phy/Kconfig
View File

@ -4,6 +4,7 @@
menu "USB Physical Layer drivers"
config USB_PHY
select EXTCON
def_bool n
#
@ -109,7 +110,7 @@ config OMAP_OTG
config TAHVO_USB
tristate "Tahvo USB transceiver driver"
depends on MFD_RETU && EXTCON
depends on MFD_RETU
depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y'
select USB_PHY
help
@ -141,7 +142,6 @@ config USB_MSM_OTG
depends on (USB || USB_GADGET) && (ARCH_QCOM || COMPILE_TEST)
depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y'
depends on RESET_CONTROLLER
depends on EXTCON
select USB_PHY
help
Enable this to support the USB OTG transceiver on Qualcomm chips. It
@ -155,7 +155,7 @@ config USB_MSM_OTG
config USB_QCOM_8X16_PHY
tristate "Qualcomm APQ8016/MSM8916 on-chip USB PHY controller support"
depends on ARCH_QCOM || COMPILE_TEST
depends on RESET_CONTROLLER && EXTCON
depends on RESET_CONTROLLER
select USB_PHY
select USB_ULPI_VIEWPORT
help

85
drivers/usb/phy/phy-msm-usb.c
View File

@ -145,17 +145,6 @@ struct msm_otg_platform_data {
void (*setup_gpio)(enum usb_otg_state state);
};
/**
* struct msm_usb_cable - structure for exteternal connector cable
* state tracking
* @nb: hold event notification callback
* @conn: used for notification registration
*/
struct msm_usb_cable {
struct notifier_block nb;
struct extcon_dev *extcon;
};
/**
* struct msm_otg: OTG driver data. Shared by HCD and DCD.
* @otg: USB OTG Transceiver structure.
@ -215,9 +204,6 @@ struct msm_otg {
bool manual_pullup;
struct msm_usb_cable vbus;
struct msm_usb_cable id;
struct gpio_desc *switch_gpio;
struct notifier_block reboot;
};
@ -1612,8 +1598,8 @@ MODULE_DEVICE_TABLE(of, msm_otg_dt_match);
static int msm_otg_vbus_notifier(struct notifier_block *nb, unsigned long event,
void *ptr)
{
struct msm_usb_cable *vbus = container_of(nb, struct msm_usb_cable, nb);
struct msm_otg *motg = container_of(vbus, struct msm_otg, vbus);
struct usb_phy *usb_phy = container_of(nb, struct usb_phy, vbus_nb);
struct msm_otg *motg = container_of(usb_phy, struct msm_otg, phy);
if (event)
set_bit(B_SESS_VLD, &motg->inputs);
@ -1636,8 +1622,8 @@ static int msm_otg_vbus_notifier(struct notifier_block *nb, unsigned long event,
static int msm_otg_id_notifier(struct notifier_block *nb, unsigned long event,
void *ptr)
{
struct msm_usb_cable *id = container_of(nb, struct msm_usb_cable, nb);
struct msm_otg *motg = container_of(id, struct msm_otg, id);
struct usb_phy *usb_phy = container_of(nb, struct usb_phy, id_nb);
struct msm_otg *motg = container_of(usb_phy, struct msm_otg, phy);
if (event)
clear_bit(ID, &motg->inputs);
@ -1652,7 +1638,6 @@ static int msm_otg_id_notifier(struct notifier_block *nb, unsigned long event,
static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg)
{
struct msm_otg_platform_data *pdata;
struct extcon_dev *ext_id, *ext_vbus;
struct device_node *node = pdev->dev.of_node;
struct property *prop;
int len, ret, words;
@ -1708,54 +1693,6 @@ static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg)
if (IS_ERR(motg->switch_gpio))
return PTR_ERR(motg->switch_gpio);
ext_id = ERR_PTR(-ENODEV);
ext_vbus = ERR_PTR(-ENODEV);
if (of_property_read_bool(node, "extcon")) {
/* Each one of them is not mandatory */
ext_vbus = extcon_get_edev_by_phandle(&pdev->dev, 0);
if (IS_ERR(ext_vbus) && PTR_ERR(ext_vbus) != -ENODEV)
return PTR_ERR(ext_vbus);
ext_id = extcon_get_edev_by_phandle(&pdev->dev, 1);
if (IS_ERR(ext_id) && PTR_ERR(ext_id) != -ENODEV)
return PTR_ERR(ext_id);
}
if (!IS_ERR(ext_vbus)) {
motg->vbus.extcon = ext_vbus;
motg->vbus.nb.notifier_call = msm_otg_vbus_notifier;
ret = devm_extcon_register_notifier(&pdev->dev, ext_vbus,
EXTCON_USB, &motg->vbus.nb);
if (ret < 0) {
dev_err(&pdev->dev, "register VBUS notifier failed\n");
return ret;
}
ret = extcon_get_state(ext_vbus, EXTCON_USB);
if (ret)
set_bit(B_SESS_VLD, &motg->inputs);
else
clear_bit(B_SESS_VLD, &motg->inputs);
}
if (!IS_ERR(ext_id)) {
motg->id.extcon = ext_id;
motg->id.nb.notifier_call = msm_otg_id_notifier;
ret = devm_extcon_register_notifier(&pdev->dev, ext_id,
EXTCON_USB_HOST, &motg->id.nb);
if (ret < 0) {
dev_err(&pdev->dev, "register ID notifier failed\n");
return ret;
}
ret = extcon_get_state(ext_id, EXTCON_USB_HOST);
if (ret)
clear_bit(ID, &motg->inputs);
else
set_bit(ID, &motg->inputs);
}
prop = of_find_property(node, "qcom,phy-init-sequence", &len);
if (!prop || !len)
return 0;
@ -1932,6 +1869,8 @@ static int msm_otg_probe(struct platform_device *pdev)
phy->init = msm_phy_init;
phy->notify_disconnect = msm_phy_notify_disconnect;
phy->type = USB_PHY_TYPE_USB2;
phy->vbus_nb.notifier_call = msm_otg_vbus_notifier;
phy->id_nb.notifier_call = msm_otg_id_notifier;
phy->io_ops = &msm_otg_io_ops;
@ -1947,6 +1886,18 @@ static int msm_otg_probe(struct platform_device *pdev)
goto disable_ldo;
}
ret = extcon_get_state(phy->edev, EXTCON_USB);
if (ret)
set_bit(B_SESS_VLD, &motg->inputs);
else
clear_bit(B_SESS_VLD, &motg->inputs);
ret = extcon_get_state(phy->id_edev, EXTCON_USB_HOST);
if (ret)
clear_bit(ID, &motg->inputs);
else
set_bit(ID, &motg->inputs);
platform_set_drvdata(pdev, motg);
device_init_wakeup(&pdev->dev, 1);

20
drivers/usb/phy/phy-qcom-8x16-usb.c
View File

@ -69,9 +69,6 @@ struct phy_8x16 {
struct reset_control *phy_reset;
struct extcon_dev *vbus_edev;
struct notifier_block vbus_notify;
struct gpio_desc *switch_gpio;
struct notifier_block reboot_notify;
};
@ -131,7 +128,8 @@ static int phy_8x16_vbus_off(struct phy_8x16 *qphy)
static int phy_8x16_vbus_notify(struct notifier_block *nb, unsigned long event,
void *ptr)
{
struct phy_8x16 *qphy = container_of(nb, struct phy_8x16, vbus_notify);
struct usb_phy *usb_phy = container_of(nb, struct usb_phy, vbus_nb);
struct phy_8x16 *qphy = container_of(usb_phy, struct phy_8x16, phy);
if (event)
phy_8x16_vbus_on(qphy);
@ -187,7 +185,7 @@ static int phy_8x16_init(struct usb_phy *phy)
val = ULPI_PWR_OTG_COMP_DISABLE;
usb_phy_io_write(phy, val, ULPI_SET(ULPI_PWR_CLK_MNG_REG));
state = extcon_get_state(qphy->vbus_edev, EXTCON_USB);
state = extcon_get_state(qphy->phy.edev, EXTCON_USB);
if (state)
phy_8x16_vbus_on(qphy);
else
@ -289,15 +287,13 @@ static int phy_8x16_probe(struct platform_device *pdev)
phy->io_priv = qphy->regs + HSPHY_ULPI_VIEWPORT;
phy->io_ops = &ulpi_viewport_access_ops;
phy->type = USB_PHY_TYPE_USB2;
phy->vbus_nb.notifier_call = phy_8x16_vbus_notify;
phy->id_nb.notifier_call = NULL;
ret = phy_8x16_read_devicetree(qphy);
if (ret < 0)
return ret;
qphy->vbus_edev = extcon_get_edev_by_phandle(phy->dev, 0);
if (IS_ERR(qphy->vbus_edev))
return PTR_ERR(qphy->vbus_edev);
ret = clk_set_rate(qphy->core_clk, INT_MAX);
if (ret < 0)
dev_dbg(phy->dev, "Can't boost core clock\n");
@ -315,12 +311,6 @@ static int phy_8x16_probe(struct platform_device *pdev)
if (WARN_ON(ret))
goto off_clks;
qphy->vbus_notify.notifier_call = phy_8x16_vbus_notify;
ret = devm_extcon_register_notifier(&pdev->dev, qphy->vbus_edev,
EXTCON_USB, &qphy->vbus_notify);
if (ret < 0)
goto off_power;
ret = usb_add_phy_dev(&qphy->phy);
if (ret)
goto off_power;

57
drivers/usb/phy/phy.c
View File

@ -100,6 +100,54 @@ static int devm_usb_phy_match(struct device *dev, void *res, void *match_data)
return *phy == match_data;
}
static int usb_add_extcon(struct usb_phy *x)
{
int ret;
if (of_property_read_bool(x->dev->of_node, "extcon")) {
x->edev = extcon_get_edev_by_phandle(x->dev, 0);
if (IS_ERR(x->edev))
return PTR_ERR(x->edev);
x->id_edev = extcon_get_edev_by_phandle(x->dev, 1);
if (IS_ERR(x->id_edev)) {
x->id_edev = NULL;
dev_info(x->dev, "No separate ID extcon device\n");
}
if (x->vbus_nb.notifier_call) {
ret = devm_extcon_register_notifier(x->dev, x->edev,
EXTCON_USB,
&x->vbus_nb);
if (ret < 0) {
dev_err(x->dev,
"register VBUS notifier failed\n");
return ret;
}
}
if (x->id_nb.notifier_call) {
struct extcon_dev *id_ext;
if (x->id_edev)
id_ext = x->id_edev;
else
id_ext = x->edev;
ret = devm_extcon_register_notifier(x->dev, id_ext,
EXTCON_USB_HOST,
&x->id_nb);
if (ret < 0) {
dev_err(x->dev,
"register ID notifier failed\n");
return ret;
}
}
}
return 0;
}
/**
* devm_usb_get_phy - find the USB PHY
* @dev - device that requests this phy
@ -388,6 +436,10 @@ int usb_add_phy(struct usb_phy *x, enum usb_phy_type type)
return -EINVAL;
}
ret = usb_add_extcon(x);
if (ret)
return ret;
ATOMIC_INIT_NOTIFIER_HEAD(&x->notifier);
spin_lock_irqsave(&phy_lock, flags);
@ -422,12 +474,17 @@ int usb_add_phy_dev(struct usb_phy *x)
{
struct usb_phy_bind *phy_bind;
unsigned long flags;
int ret;
if (!x->dev) {
dev_err(x->dev, "no device provided for PHY\n");
return -EINVAL;
}
ret = usb_add_extcon(x);
if (ret)
return ret;
ATOMIC_INIT_NOTIFIER_HEAD(&x->notifier);
spin_lock_irqsave(&phy_lock, flags);

4
include/linux/usb/gadget.h
View File

@ -304,6 +304,7 @@ struct usb_gadget_ops {
int (*udc_start)(struct usb_gadget *,
struct usb_gadget_driver *);
int (*udc_stop)(struct usb_gadget *);
void (*udc_set_speed)(struct usb_gadget *, enum usb_device_speed);
struct usb_ep *(*match_ep)(struct usb_gadget *,
struct usb_endpoint_descriptor *,
struct usb_ss_ep_comp_descriptor *);
@ -352,6 +353,8 @@ struct usb_gadget_ops {
* @deactivated: True if gadget is deactivated - in deactivated state it cannot
* be connected.
* @connected: True if gadget is connected.
* @lpm_capable: If the gadget max_speed is FULL or HIGH, this flag
* indicates that it supports LPM as per the LPM ECN & errata.
*
* Gadgets have a mostly-portable "gadget driver" implementing device
* functions, handling all usb configurations and interfaces. Gadget
@ -404,6 +407,7 @@ struct usb_gadget {
unsigned is_selfpowered:1;
unsigned deactivated:1;
unsigned connected:1;
unsigned lpm_capable:1;
};
#define work_to_gadget(w) (container_of((w), struct usb_gadget, work))

7
include/linux/usb/phy.h
View File

@ -9,6 +9,7 @@
#ifndef __LINUX_USB_PHY_H
#define __LINUX_USB_PHY_H
#include <linux/extcon.h>
#include <linux/notifier.h>
#include <linux/usb.h>
@ -85,6 +86,12 @@ struct usb_phy {
struct usb_phy_io_ops *io_ops;
void __iomem *io_priv;
/* to support extcon device */
struct extcon_dev *edev;
struct extcon_dev *id_edev;
struct notifier_block vbus_nb;
struct notifier_block id_nb;
/* for notification of usb_phy_events */
struct atomic_notifier_head notifier;

7
include/uapi/linux/usb/functionfs.h
View File

@ -275,13 +275,14 @@ struct usb_functionfs_event {
#define FUNCTIONFS_INTERFACE_REVMAP _IO('g', 128)
/*
* Returns real bEndpointAddress of an endpoint. If function is not
* active returns -ENODEV.
* Returns real bEndpointAddress of an endpoint. If endpoint shuts down
* during the call, returns -ESHUTDOWN.
*/
#define FUNCTIONFS_ENDPOINT_REVMAP _IO('g', 129)
/*
* Returns endpoint descriptor. If function is not active returns -ENODEV.
* Returns endpoint descriptor. If endpoint shuts down during the call,
* returns -ESHUTDOWN.
*/
#define FUNCTIONFS_ENDPOINT_DESC _IOR('g', 130, \
struct usb_endpoint_descriptor)

16
tools/usb/testusb.c
View File

@ -387,15 +387,17 @@ int main (int argc, char **argv)
/* pick defaults that works with all speeds, without short packets.
*
* Best per-frame data rates:
* high speed, bulk 512 * 13 * 8 = 53248
* interrupt 1024 * 3 * 8 = 24576
* full speed, bulk/intr 64 * 19 = 1216
* interrupt 64 * 1 = 64
* low speed, interrupt 8 * 1 = 8
* super speed,bulk 1024 * 16 * 8 = 131072
* interrupt 1024 * 3 * 8 = 24576
* high speed, bulk 512 * 13 * 8 = 53248
* interrupt 1024 * 3 * 8 = 24576
* full speed, bulk/intr 64 * 19 = 1216
* interrupt 64 * 1 = 64
* low speed, interrupt 8 * 1 = 8
*/
param.iterations = 1000;
param.length = 1024;
param.vary = 512;
param.vary = 1024;
param.sglen = 32;
/* for easy use when hotplugging */
@ -457,7 +459,7 @@ int main (int argc, char **argv)
"\t-c iterations default 1000\n"
"\t-s transfer length default 1024\n"
"\t-g sglen default 32\n"
"\t-v vary default 512\n",
"\t-v vary default 1024\n",
argv[0]);
return 1;
}