firefly-linux-kernel-4.4.55.git
8 years agocpufreq: interactive: fixup trace of string params
Todd Poynor [Fri, 11 May 2012 18:06:09 +0000 (11:06 -0700)]
cpufreq: interactive: fixup trace of string params

Change-Id: Iac47f62437e61b13724afbbf9df1a0729f58f236
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: restart above_hispeed_delay at each hispeed load
Todd Poynor [Fri, 11 May 2012 06:28:06 +0000 (23:28 -0700)]
cpufreq: interactive: restart above_hispeed_delay at each hispeed load

Change-Id: I2e5b91d45e8806b0ab94ca2301ed671c9af9ab13
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq-interactive: Compile fixup
John Stultz [Tue, 1 May 2012 21:10:31 +0000 (14:10 -0700)]
cpufreq-interactive: Compile fixup

Looks like AOSP has a compile bug. Fix it up.

Signed-off-by: John Stultz <john.stultz@linaro.org>
8 years agocpufreq: interactive: add boost pulse interface
Todd Poynor [Thu, 3 May 2012 07:16:55 +0000 (00:16 -0700)]
cpufreq: interactive: add boost pulse interface

Change-Id: Icf1e86d2065cc8f0816ba9c6b065eb056d4e8249
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: set floor for boosted speed
Todd Poynor [Fri, 27 Apr 2012 04:41:40 +0000 (21:41 -0700)]
cpufreq: interactive: set floor for boosted speed

Allow speed to drop to flooor frequency but not below, don't pin
to speed at last boost.

Change-Id: I0147c2b7a2e61ba16820605af6baaf09570be787
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: Add sysfs boost interface for hints from userspace
Todd Poynor [Tue, 24 Apr 2012 03:42:41 +0000 (20:42 -0700)]
cpufreq: interactive: Add sysfs boost interface for hints from userspace

The explicit hint on/off version.

Change-Id: Ibf62b6d45bf6fb8c9c055b9bdaf074ce9374c04f
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: remove unused target_validate_time_in_idle
Todd Poynor [Tue, 24 Apr 2012 04:22:45 +0000 (21:22 -0700)]
cpufreq: interactive: remove unused target_validate_time_in_idle

Change-Id: I37c5085b91318242612440dfd775ad762996612f
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: Boost frequency on touchscreen input
Todd Poynor [Tue, 3 Apr 2012 00:17:14 +0000 (17:17 -0700)]
cpufreq: interactive: Boost frequency on touchscreen input

Based on previous patches by Tero Kristo <tero.kristo@nokia.com>,
Brian Steuer <bsteuer@codeaurora.org>,
David Ng <dave@codeaurora.org>,
Antti P Miettinen <amiettinen@nvidia.com>, and
Thomas Renninger <trenn@suse.de>

Change-Id: Ic55fedcf6f9310f43a7022fb88e23b0392122769
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: Separate speed target revalidate time and initial set time
Todd Poynor [Fri, 20 Apr 2012 20:18:32 +0000 (13:18 -0700)]
cpufreq: interactive: Separate speed target revalidate time and initial set time

Allow speed drop after min_sample_time elapses from last time
the current speed was last re-validated as appropriate for
current load / input boost.

Allow speed bump after min_sample_time (or above_hispeed_delay)
elapses from the time the current speed was originally set.

Change-Id: Ic25687a7a53d25e6544c30c47d7ab6f27a47bee8
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: base hispeed bump on target freq, not actual
Todd Poynor [Thu, 19 Apr 2012 19:52:48 +0000 (12:52 -0700)]
cpufreq: interactive: base hispeed bump on target freq, not actual

For systems that set a common speed for all CPUs, checking current
speed here could bypass the intermediate hispeed bump decision for
this CPU when another CPU was already at hispeed.  This could
result in an overly high setting (for all CPUs) in situations
where all CPUs were about to drop to load levels that map to
hispeed or below.

Change-Id: I186f23dcfc5e2b6336cab8b0327f0c8a9a4482bc
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: adjust code and documentation to match
Todd Poynor [Wed, 18 Apr 2012 00:39:34 +0000 (17:39 -0700)]
cpufreq: interactive: adjust code and documentation to match

Change-Id: If59c668d514a29febe5c35404fd9d01df8548eb1
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: configurable delay before raising above hispeed
Todd Poynor [Sat, 14 Apr 2012 03:18:02 +0000 (20:18 -0700)]
cpufreq: interactive: configurable delay before raising above hispeed

Change-Id: I4d6ac40b23a3790d48e30c37408284e9f955e8fa
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: don't drop speed if recently at higher load
Todd Poynor [Sat, 7 Apr 2012 02:59:36 +0000 (19:59 -0700)]
cpufreq: interactive: don't drop speed if recently at higher load

Apply min_sample_time to the last time the current target speed
was originally requested or re-validated as appropriate for the
current load, not to the time since the current speed was
originally set.  Avoids periodic dips in speed during bursty
loads.

Change-Id: I250bda657985de60373f9897cc41f480664d51a1
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: set at least hispeed when above hispeed load
Todd Poynor [Sat, 7 Apr 2012 02:50:12 +0000 (19:50 -0700)]
cpufreq: interactive: set at least hispeed when above hispeed load

If load is above go_hispeed_load, always go to at least hispeed_freq,
even when reducing speed from a higher speed, not just when jumping
up from minimum speed.  Avoids running at a lower than intended
speed after a burst of even higher load.

Change-Id: I5b9d2a15ba25ce609b21bac7c724265cf6838dee
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: apply intermediate load to max speed not current
Todd Poynor [Fri, 6 Apr 2012 08:13:09 +0000 (01:13 -0700)]
cpufreq: interactive: apply intermediate load to max speed not current

Evaluate spikes in load (below go_hispeed_load) against the maximum
speed supported by the device, not the current speed (which tends to
make it too difficult to raise speed to intermediate levels until
very busy).

Change-Id: Ib937006abf8bedb60891a739acd733e89b732ae0
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq interactive governor: event tracing
Todd Poynor [Fri, 17 Feb 2012 00:27:59 +0000 (16:27 -0800)]
cpufreq interactive governor: event tracing

Change-Id: Ic13614a3da2faa2d4bd215ca3eb7191614f0cf66
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpufreq: interactive: New 'interactive' governor
Mike Chan [Tue, 22 Jun 2010 18:26:45 +0000 (11:26 -0700)]
cpufreq: interactive: New 'interactive' governor

This governor is designed for latency-sensitive workloads, such as
interactive user interfaces.  The interactive governor aims to be
significantly more responsive to ramp CPU quickly up when CPU-intensive
activity begins.

Existing governors sample CPU load at a particular rate, typically
every X ms.  This can lead to under-powering UI threads for the period of
time during which the user begins interacting with a previously-idle system
until the next sample period happens.

The 'interactive' governor uses a different approach. Instead of sampling
the CPU at a specified rate, the governor will check whether to scale the
CPU frequency up soon after coming out of idle.  When the CPU comes out of
idle, a timer is configured to fire within 1-2 ticks.  If the CPU is very
busy from exiting idle to when the timer fires then we assume the CPU is
underpowered and ramp to MAX speed.

If the CPU was not sufficiently busy to immediately ramp to MAX speed, then
the governor evaluates the CPU load since the last speed adjustment,
choosing the highest value between that longer-term load or the short-term
load since idle exit to determine the CPU speed to ramp to.

A realtime thread is used for scaling up, giving the remaining tasks the
CPU performance benefit, unlike existing governors which are more likely to
schedule rampup work to occur after your performance starved tasks have
completed.

The tuneables for this governor are:
/sys/devices/system/cpu/cpufreq/interactive/min_sample_time:
The minimum amount of time to spend at the current frequency before
ramping down. This is to ensure that the governor has seen enough
historic CPU load data to determine the appropriate workload.
Default is 80000 uS.
/sys/devices/system/cpu/cpufreq/interactive/go_maxspeed_load
The CPU load at which to ramp to max speed.  Default is 85.

Change-Id: Ib2b362607c62f7c56d35f44a9ef3280f98c17585
Signed-off-by: Mike Chan <mike@android.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Bug: 3152864

8 years agoARM: Call idle notifiers
Todd Poynor [Thu, 16 Jun 2011 00:44:50 +0000 (17:44 -0700)]
ARM: Call idle notifiers

Change-Id: Id833e61c13baa1783705ac9e9046d1f0cc90c95e
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agoMove x86_64 idle notifiers to generic
Todd Poynor [Thu, 16 Jun 2011 00:21:57 +0000 (17:21 -0700)]
Move x86_64 idle notifiers to generic

Move the x86_64 idle notifiers originally by Andi Kleen and Venkatesh
Pallipadi to generic.

Change-Id: Idf29cda15be151f494ff245933c12462643388d5
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agocpuidle: governor: menu: don't use loadavg
Colin Cross [Mon, 19 Sep 2011 23:42:44 +0000 (16:42 -0700)]
cpuidle: governor: menu: don't use loadavg

get_loadavg doesn't work as intended.  According to the comments, it
should be returning an average over a few seconds, but it is actually
reading the instantaneous load.  It is almost always returning 0, but
can sometimes, depending on workload, spike very high into the hundreds
even when the average cpu load is under 10%.  Disable it for now.

Change-Id: I63ed100af1cf9463549939b8113ed83676db5f86
Signed-off-by: Colin Cross <ccross@android.com>
8 years agosched: add sched blocked tracepoint which dumps out context of sleep.
Riley Andrews [Fri, 2 Oct 2015 07:39:53 +0000 (00:39 -0700)]
sched: add sched blocked tracepoint which dumps out context of sleep.

Decare war on uninterruptible sleep. Add a tracepoint which
walks the kernel stack and dumps the first non-scheduler function
called before the scheduler is invoked.

Change-Id: I19e965d5206329360a92cbfe2afcc8c30f65c229
Signed-off-by: Riley Andrews <riandrews@google.com>
8 years agosched: Enable might_sleep before initializing drivers.
Arve Hjønnevåg [Thu, 11 Dec 2008 04:06:28 +0000 (20:06 -0800)]
sched: Enable might_sleep before initializing drivers.

This allows detection of init bugs in built-in drivers.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agofiq_debugger: Build fixes for 4.1
John Stultz [Fri, 4 Dec 2015 19:32:21 +0000 (11:32 -0800)]
fiq_debugger: Build fixes for 4.1

Small build updates for 4.1

Signed-off-by: John Stultz <john.stultz@linaro.org>
8 years agofiq_debugger: Add fiq_watchdog_triggered api
Arve Hjønnevåg [Sat, 3 May 2014 03:31:07 +0000 (20:31 -0700)]
fiq_debugger: Add fiq_watchdog_triggered api

Dumps registers and stacktrace into console-ramoops when called
from a watchdog fiq.

Change-Id: Ib6fab5a52f670db18e64214d5e4890e8292a749c
Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agofiq_debugger: Call fiq_debugger_printf through a function pointer from cpu specific...
Arve Hjønnevåg [Sat, 3 May 2014 02:52:54 +0000 (19:52 -0700)]
fiq_debugger: Call fiq_debugger_printf through a function pointer from cpu specific code

This allows the output from the register and stack trace code to be
sent elsewhere.

Change-Id: I41bb0d5a25e1b9ca55feef5dbd675818b2f832d5
Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agofiq_debugger: add ARM64 support
Colin Cross [Thu, 3 Apr 2014 01:49:39 +0000 (18:49 -0700)]
fiq_debugger: add ARM64 support

Add fiq_debugger_arm64.c that implements the platform-specific
functions.

Change-Id: I4d8b96777bb8503a93d4eb47bbde8e018740a5bf
Signed-off-by: Colin Cross <ccross@android.com>
8 years agofiq_debugger: split arm support into fiq_debugger_arm.c
Colin Cross [Thu, 3 Apr 2014 01:42:13 +0000 (18:42 -0700)]
fiq_debugger: split arm support into fiq_debugger_arm.c

Split arm support into a separate .c file that is only built for
CONFIG_ARM.

Change-Id: Iba16f4d51608bf9c3e5c8acefefcd38fead9797c
Signed-off-by: Colin Cross <ccross@android.com>
8 years agofiq_debugger: use pt_regs for registers
Colin Cross [Sat, 5 Apr 2014 00:05:19 +0000 (17:05 -0700)]
fiq_debugger: use pt_regs for registers

IRQ mode already passes in a struct pt_regs from get_irq_regs().
FIQ mode passes in something similar but not identical to a
struct pt_regs - FIQ mode stores the spsr of the interrupted mode
in slot 17, while pt_regs expects orig_r0.

Replace the existing mixture of void *regs, unsigned *regs, and
struct pt_regs * const with const struct pt_regs *.  Modify
dump_regs not to print the spsr since it won't be there in a
struct pt_regs anyways.  Modify dump_allregs to highlight the
mode that was interrupted, making spsr easy to find there.

Change-Id: Ibfe1723d702306c7605fd071737d7be9ee9d8c12
Signed-off-by: Colin Cross <ccross@android.com>
8 years agofiq_debugger: allow compiling without CONFIG_FIQ_GLUE
Colin Cross [Thu, 3 Apr 2014 01:37:29 +0000 (18:37 -0700)]
fiq_debugger: allow compiling without CONFIG_FIQ_GLUE

Allow compiling fiq_debugger.c without CONFIG_FIQ_GLUE for
platforms that don't support FIQs.

Change-Id: Iabdfd790d24fa9d47b29d2f850c567af2dcad78f
Signed-off-by: Colin Cross <ccross@android.com>
8 years agofiq_debugger: rename debug->fiq_debugger
Colin Cross [Sat, 5 Apr 2014 05:58:23 +0000 (22:58 -0700)]
fiq_debugger: rename debug->fiq_debugger

Rename variables and functions in the global namespace to avoid
future collisions.

Change-Id: Ic23a304b0f794efc94cc6d086fddd63231d99c98
Signed-off-by: Colin Cross <ccross@android.com>
8 years agofiq_debugger: move into drivers/staging/android/fiq_debugger/
Colin Cross [Thu, 3 Apr 2014 01:30:04 +0000 (18:30 -0700)]
fiq_debugger: move into drivers/staging/android/fiq_debugger/

Move fiq_debugger into drivers/staging/android/fiq_debugger/ to
allow for sharing between ARM and ARM64.

Change-Id: I6ca5e8b7e3d000f57da3234260261c5592cef2a8
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoARM: fiq_glue: Add custom fiq return handler api.
Arve Hjønnevåg [Tue, 25 Jun 2013 01:02:05 +0000 (18:02 -0700)]
ARM: fiq_glue: Add custom fiq return handler api.

Change-Id: I5ff2764e85151ca0a88576542fda07c2d33dd065
Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agoARM: kgdb: ignore breakpoint instructions from user mode
Todd Poynor [Wed, 3 Jul 2013 22:48:04 +0000 (15:48 -0700)]
ARM: kgdb: ignore breakpoint instructions from user mode

Avoid conflicts with user mode usage of the same instructions, as with
Clang -ftrapv.

Change-Id: I12d1c6d8f94376bfd2503cb0be843d7e478fb6ea
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agoARM: fiq_debugger: Update tty code for 3.9
Arve Hjønnevåg [Tue, 15 Jan 2013 23:10:31 +0000 (15:10 -0800)]
ARM: fiq_debugger: Update tty code for 3.9

Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agoARM: fiq_debugger: Use kmsg_dumper to dump kernel logs
Arve Hjønnevåg [Tue, 27 Nov 2012 04:05:37 +0000 (20:05 -0800)]
ARM: fiq_debugger: Use kmsg_dumper to dump kernel logs

Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agoARM: fiq_debugger: Fix to compile on 3.7
Arve Hjønnevåg [Tue, 27 Nov 2012 00:23:33 +0000 (16:23 -0800)]
ARM: fiq_debugger: Fix to compile on 3.7

Use for_each_irq_desc in arch/arm/common/fiq_debugger.c

Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agoARM: fiq_debugger: fix uninitialised spin_lock.
Mars [Sat, 3 Nov 2012 04:15:38 +0000 (12:15 +0800)]
ARM: fiq_debugger: fix uninitialised spin_lock.

Backtrace:
[<c0045ea0>] (dump_backtrace+0x0/0x10c) from [<c0575c60>] (dump_stack+0x1)
 r6:c07a489c r5:c0c9b9dc r4:00000002 r3:271aed3b
[<c0575c48>] (dump_stack+0x0/0x1c) from [<c00b1b00>] (__lock_acquire+0x93)
[<c00b11c8>] (__lock_acquire+0x0/0xad4) from [<c00b219c>] (lock_acquire+0)
[<c00b210c>] (lock_acquire+0x0/0xa4) from [<c057e544>] (_raw_spin_lock_ir)
[<c057e4f8>] (_raw_spin_lock_irq+0x0/0x5c) from [<c005297c>] (fiq_tty_wri)
 r5:e30f0000 r4:e36f0c00
[<c005293c>] (fiq_tty_write+0x0/0x80) from [<c023168c>] (n_tty_write+0x18)
 r8:e370fc40 r7:e378a000 r6:e3572d1c r5:e36f0c00 r4:00000002
r3:c005293c
[<c0231500>] (n_tty_write+0x0/0x440) from [<c022d4a4>] (tty_write+0x100/0)
[<c022d3a4>] (tty_write+0x0/0x2a8) from [<c0100b80>] (vfs_write+0xa4/0x14)
[<c0100adc>] (vfs_write+0x0/0x148) from [<c0100cdc>] (sys_write+0x40/0x78)
 r8:00000002 r7:4076d2c4 r6:e370fc40 r5:00000000 r4:00000000
[<c0100c9c>] (sys_write+0x0/0x78) from [<c0041740>] (ret_fast_syscall+0x0)
 r8:c0041908 r7:00000004 r6:00000002 r5:00000000 r4:4007cbe0

[ccross: moved spin_lock_init into existing #ifdef]
Change-Id: If400d084eb20433c126ea1dd027a6be7f2ebb1f6
Signed-off-by: Mars <caoziqiang@meizu.com>
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoARM: fiq_debugger: lock between tty and console writes
Colin Cross [Thu, 1 Nov 2012 00:41:39 +0000 (17:41 -0700)]
ARM: fiq_debugger: lock between tty and console writes

debug_console_write calls debug_uart_flush, which will usually wait
until the serial port fifo empties.  If another thread is continuously
calling fiq_tty_write, the fifo will constantly be refilled and
debug_uart_flush might never return.

Add a spinlock that is locked in debug_console_write and fiq_tty_write
to ensure they can't run at the same time.  This has an extra advantage
of preventing lines from the console and tty from being mixed together.

Also reduce the size returned by fiq_tty_write_room to keep the time
spent with the spinlock held to a reasonable value.

In addition, make sure fiq context can't loop forever by never calling
debug_uart_flush when the console is enabled.

Change-Id: I5712b01f740ca0c84f680d2032c9fa16b7656939
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoARM: fiq_debugger: add process context reboot command
Colin Cross [Fri, 20 Jul 2012 01:40:04 +0000 (18:40 -0700)]
ARM: fiq_debugger: add process context reboot command

kernel_restart cannot be called from interrupt context.  Add support for
commands called from a work function, and implement the "reboot" command
there.  Also rename the existing irq-mode command to "reset" and change
it to use machine_restart instead of kernel_restart.

Change-Id: I3c423147c01db03d89e95a5b99096ca89462079f
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoARM: fiq_debugger: fix multiple consoles and make it a preferred console
Colin Cross [Sun, 18 Mar 2012 22:25:55 +0000 (15:25 -0700)]
ARM: fiq_debugger: fix multiple consoles and make it a preferred console

Fix setting up consoles on multiple fiq debugger devices by
splitting the tty driver init into the initcall, and initializing
the single tty device during probe.  Has the side effect of moving
the tty device node to /dev/ttyFIQx, where x is the platform device
id, which should normally match the serial port.

To avoid having to pass a different console=/dev/ttyFIQx for every
device, make the fiq debugger a preferred console that will be used
by default if no console was passed on the command line.

Change-Id: I6cc2670628a41e84615859bc96adba189966d647
Signed-off-by: Colin Cross <ccross@android.com>
8 years agokdb: support new lines without carriage returns
Colin Cross [Thu, 15 Mar 2012 02:26:53 +0000 (19:26 -0700)]
kdb: support new lines without carriage returns

kdb expects carriage returns through the serial port to terminate
commands.  Modify it to accept the first seen carriage return or
new line as a terminator, but not treat \r\n as two terminators.

Change-Id: I06166017e7703d24310eefcb71c3a7d427088db7
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoARM: fiq_debugger: add support for kgdb
Colin Cross [Thu, 15 Mar 2012 02:23:29 +0000 (19:23 -0700)]
ARM: fiq_debugger: add support for kgdb

Adds polling tty ops to the fiq debugger console tty, which allows
kgdb to run against an fiq debugger console.

Add a check in do_sysrq to prevent enabling kgdb from the fiq
debugger unless a flag (writable only by root) has been set. This
should make it safe to enable KGDB on a production device.

Also add a shortcut to enable the console and kgdb together, to
allow kgdb to be enabled when the shell on the console is not
responding.

Change-Id: Ifc65239ca96c9887431a6a36b9b44a539002f544
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoARM: fiq_debugger: add debug_putc
Colin Cross [Thu, 15 Mar 2012 19:57:20 +0000 (12:57 -0700)]
ARM: fiq_debugger: add debug_putc

Convert all the calls to state->pdata->uart_putc to a debug_putc
helper.

Change-Id: Idc007bd170ff1b51d0325e238105ae0c86d23777
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoARM: fiq_debugger: add support for reboot commands
Colin Cross [Wed, 14 Mar 2012 23:29:47 +0000 (16:29 -0700)]
ARM: fiq_debugger: add support for reboot commands

Pass the rest of the reboot command to kernel_restart to allow
reboot bootloader to work from FIQ debugger.

Change-Id: I4e7b366a69268dda17ffcf4c84f2373d15cb1271
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoARM: fiq_debugger: fix compiling for v3.3
Colin Cross [Wed, 14 Mar 2012 23:28:45 +0000 (16:28 -0700)]
ARM: fiq_debugger: fix compiling for v3.3

Call kernel_restart instead of arch_reset, the ARM reset handling
has changed.

Remove localtimer irq printing, they now show up in the regular
irq stats.

Change-Id: I523da343b292c5711f3e1cbfd766d32eea2da84e
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoARM: Add generic fiq serial debugger
Iliyan Malchev [Sun, 6 Jun 2010 00:36:24 +0000 (17:36 -0700)]
ARM: Add generic fiq serial debugger

Change-Id: Ibb536c88f0dbaf4766d0599296907e35e42cbfd6
Signed-off-by: Iliyan Malchev <malchev@google.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agoARM: Add fiq_glue
Arve Hjønnevåg [Tue, 28 Sep 2010 00:50:00 +0000 (17:50 -0700)]
ARM: Add fiq_glue

Change-Id: I27d2554e07d9de204e0a06696d38db51608d9f6b
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
8 years agofix false disconnect due to a signal sent to the reading process
keunyoung [Wed, 29 Jan 2014 20:41:50 +0000 (12:41 -0800)]
fix false disconnect due to a signal sent to the reading process

- In the current implementation, when a signal is sent to the reading process,
  read is cancelled by calling usb_ep_dequeue, which lead into calling
  acc_complete_out with ECONNRESET, but the current logic treats it as
  disconnection, which makes the device inaccessible until cable is actually
  disconnected.
- The fix calls disconnect only when ESHUTDOWN error is passed.
- If data has already arrived while trying cancelling, the data is marked
  as available, and it will be read out on the next read. This is necessary
  as USB bulk is assumed to guarantee no data loss.

Signed-off-by: keunyoung <keunyoung@google.com>
8 years agousb: gadget: u_ether: use %z format specifier for size_t
Amit Pundir [Fri, 8 Jan 2016 14:06:02 +0000 (19:36 +0530)]
usb: gadget: u_ether: use %z format specifier for size_t

Use '%zd' format specifier for size_t type instead
of '%d' to fix build warnings like:

drivers/usb/gadget/function/u_ether.c: In function ‘rx_submit’:
drivers/usb/gadget/function/u_ether.c:244:2: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘size_t’ [-Wformat=]
  DBG(dev, "%s: size: %d\n", __func__, size);
  ^

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agousb: gadget: rndis: fix broken build for 4.4
Amit Pundir [Mon, 21 Dec 2015 08:33:15 +0000 (14:03 +0530)]
usb: gadget: rndis: fix broken build for 4.4

Use rndis_params instead of configNr to align with
changes from mainline commit 83210e59ee15
"usb: gadget: rndis: use rndis_params instead of configNr".

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agousb: gadget: rndis: fix broken data aggregation build
Amit Pundir [Mon, 21 Dec 2015 08:45:58 +0000 (14:15 +0530)]
usb: gadget: rndis: fix broken data aggregation build

Declare "cdev" to fix broken AOSP commit
"RNDIS: Add Data aggregation (multi packet) support",
otherwise we run into following build failure:

  CC      drivers/usb/gadget/function/f_rndis.o
drivers/usb/gadget/function/f_rndis.c: In function ‘rndis_command_complete’:
drivers/usb/gadget/function/f_rndis.c:479:3: error: ‘cdev’ undeclared (first use in this function)
drivers/usb/gadget/function/f_rndis.c:479:3: note: each undeclared identifier is reported only once for each function it appears in
make[4]: *** [drivers/usb/gadget/function/f_rndis.o] Error 1

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agousb: gadget: rndis: use %z format specifier for size_t
Amit Pundir [Tue, 29 Dec 2015 21:35:44 +0000 (03:05 +0530)]
usb: gadget: rndis: use %z format specifier for size_t

Use '%z' format specifier for sizeof operator instead
of '%u' to fix build warnings like:

    warning: format '%u' expects type 'unsigned int', but argument 3 has type 'long unsigned int'

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agousb: gadget: cleanup: fix unused variable and function warnings
Amit Pundir [Tue, 25 Aug 2015 07:39:31 +0000 (13:09 +0530)]
usb: gadget: cleanup: fix unused variable and function warnings

Remove unused variables and functions to fix following
build warnings:

  CC      drivers/usb/gadget/configfs.o
drivers/usb/gadget/configfs.c: In function ‘gadgets_make’:
drivers/usb/gadget/configfs.c:1710:6: warning: unused variable ‘err’ [-Wunused-variable]
  int err;
      ^
drivers/usb/gadget/configfs.c:1709:27: warning: unused variable ‘attr’ [-Wunused-variable]
  struct device_attribute *attr;
                           ^
drivers/usb/gadget/configfs.c:1708:28: warning: unused variable ‘attrs’ [-Wunused-variable]
  struct device_attribute **attrs;
                            ^
drivers/usb/gadget/configfs.c: In function ‘gadgets_drop’:
drivers/usb/gadget/configfs.c:1774:27: warning: unused variable ‘attr’ [-Wunused-variable]
  struct device_attribute *attr;
                           ^
drivers/usb/gadget/configfs.c:1773:28: warning: unused variable ‘attrs’ [-Wunused-variable]
  struct device_attribute **attrs;
                            ^
<snip>...
  CC      drivers/usb/gadget/function/f_mtp.o
drivers/usb/gadget/function/f_mtp.c:1219:12: warning: ‘mtp_bind_config’ defined but not used [-Wunused-function]
 static int mtp_bind_config(struct usb_configuration *c, bool ptp_config)
            ^
drivers/usb/gadget/function/f_mtp.c:1300:12: warning: ‘mtp_setup’ defined but not used [-Wunused-function]
 static int mtp_setup(void)
            ^
<snip>...
  CC      drivers/usb/gadget/function/f_accessory.o
drivers/usb/gadget/function/f_accessory.c:969:1: warning: ‘acc_function_bind’ defined but not used [-Wunused-function]
 acc_function_bind(struct usb_configuration *c, struct usb_function *f) {
 ^
drivers/usb/gadget/function/f_accessory.c:1172:12: warning: ‘acc_bind_config’ defined but not used [-Wunused-function]
 static int acc_bind_config(struct usb_configuration *c)
            ^

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agousb: gadget: build audio_source function only if SND is enabled
Amit Pundir [Thu, 29 Oct 2015 21:30:20 +0000 (03:00 +0530)]
usb: gadget: build audio_source function only if SND is enabled

Also select SND_PCM while building f_audio_source
otherwise we run into following build error:

  LD      init/built-in.o
drivers/built-in.o: In function `audio_data_complete':
/linaro/android/kernel/linaro-android/drivers/usb/gadget/function/f_audio_source.c:458: undefined reference to `snd_pcm_period_elapsed'
drivers/built-in.o: In function `audio_pcm_hw_free':
/linaro/android/kernel/linaro-android/drivers/usb/gadget/function/f_audio_source.c:770: undefined reference to `snd_pcm_lib_free_vmalloc_buffer'
drivers/built-in.o: In function `snd_pcm_lib_alloc_vmalloc_buffer':
/linaro/android/kernel/linaro-android/include/sound/pcm.h:1179: undefined reference to `_snd_pcm_lib_alloc_vmalloc_buffer'
drivers/built-in.o: In function `audio_pcm_open':
/linaro/android/kernel/linaro-android/drivers/usb/gadget/function/f_audio_source.c:734: undefined reference to `snd_pcm_limit_hw_rates'
drivers/built-in.o: In function `snd_card_setup':
/linaro/android/kernel/linaro-android/drivers/usb/gadget/function/f_audio_source.c:888: undefined reference to `snd_pcm_new'
/linaro/android/kernel/linaro-android/drivers/usb/gadget/function/f_audio_source.c:898: undefined reference to `snd_pcm_set_ops'
/linaro/android/kernel/linaro-android/drivers/usb/gadget/function/f_audio_source.c:899: undefined reference to `snd_pcm_lib_preallocate_pages_for_all'
drivers/built-in.o:(.data+0x1fd28): undefined reference to `snd_pcm_lib_ioctl'
make: *** [vmlinux] Error 1

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agousb: gadget: configfs: handle gadget reset request for android
Amit Pundir [Tue, 6 Oct 2015 15:23:27 +0000 (20:53 +0530)]
usb: gadget: configfs: handle gadget reset request for android

There is this new mandatory UDC->reset API in v3.18+ kernels,
commit ef979a26 "usb: gadget: add reset API at usb_gadget_driver".

Let android_disconnect handle that for Android, similar to
how composite_disconnect is handling the generic ConfigFS
gadget reset request.

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agoANDROID: usb: gadget: create F_midi device
Badhri Jagan Sridharan [Thu, 3 Sep 2015 05:49:10 +0000 (22:49 -0700)]
ANDROID: usb: gadget: create F_midi device

Android frameworks relies on the alsa
config reported by the f_midi device.

Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I0695e00b166fd953f50acea93802245b0d5a5240

8 years agousb: gadget: Add device attribute to determine gadget state
Badhri Jagan Sridharan [Sun, 9 Aug 2015 22:12:50 +0000 (15:12 -0700)]
usb: gadget: Add device attribute to determine gadget state

Android frameworks (UsbDeviceManager) relies on gadget state exported
through device attributes.  This CL adds the device attribute to export
USB gadget state.

Change-Id: Id0391810d75b58c579610fbec6e37ab22f28886d
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
8 years agousb: phy: fix dual role sysfs build if kernel modules are supported
Amit Pundir [Wed, 2 Sep 2015 11:08:31 +0000 (16:38 +0530)]
usb: phy: fix dual role sysfs build if kernel modules are supported

Add a missing ";" after EXPORT_SYMBOL() otherwise we run
into following build error if Kernel Modules are supported:
----------
  CC      drivers/usb/phy/class-dual-role.o
drivers/usb/phy/class-dual-role.c:91:1: error: expected ',' or ';' before 'int'
 int dual_role_get_property(struct dual_role_phy_instance *dual_role,
 ^
make[3]: *** [drivers/usb/phy/class-dual-role.o] Error 1
----------

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agousb: phy: Dual role sysfs class definition
Badhri Jagan Sridharan [Tue, 1 Sep 2015 04:36:07 +0000 (21:36 -0700)]
usb: phy: Dual role sysfs class definition

This CL adds a new class to monitor and change
dual role usb ports from userspace. The usb
phy drivers can register to the dual_role_usb
class and expose the capabilities of the ports.
The phy drivers can decide on whether a specific
attribute can be changed from userspace by
choosing to implement the appropriate callback.

Cherry-picked from
https://android-review.googlesource.com/#/c/167310/

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Bug: 21615151
Change-Id: Id1c4aaa97e898264d7006381a7badd029b5d9789

8 years agousb: gadget: fix NULL ptr derefer while symlinking PTP func
Amit Pundir [Fri, 31 Jul 2015 21:56:51 +0000 (03:26 +0530)]
usb: gadget: fix NULL ptr derefer while symlinking PTP func

Fix NULL pointer dereference while trying to link PTP
function to a gadget configuration without creating
MTP function.

PTP piggyback on MTP function so make sure we have
MTP function created beforehand. Otherwise we run
into following kernel panic:
-----------------------
[   70.329957] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[   70.330738] pgd = dd8ec000
[   70.330916] [00000000] *pgd=00000000
[   70.331663] Internal error: Oops: 805 [#1] SMP THUMB2
[   70.332155] CPU: 0 PID: 2067 Comm: ln Not tainted 3.18.0-00587-gdfa582e #1
[   70.332511] task: dd9c92c0 ti: dd822000 task.ti: dd822000
[   70.333094] PC is at function_alloc_mtp_ptp+0xe/0x68
[   70.333311] LR is at usb_get_function+0x11/0x1c
[   70.333489] pc : [<c034ec12>]    lr : [<c033cce9>]    psr: 60070033
<..snip..>
[   70.384111] 3fc0: bec14ae4 00000004 bec14c0a 00000053 00000004 b6f0422d 00000000 bec14adc
[   70.384369] 3fe0: bec14af8 bec14a98 b6f071f3 b6e8977c 20070010 bec14c0d 00000000 00000000
[   70.384832] [<c034ec12>] (function_alloc_mtp_ptp) from [<c033cce9>] (usb_get_function+0x11/0x1c)
[   70.385146] [<c033cce9>] (usb_get_function) from [<c033da9b>] (config_usb_cfg_link+0x87/0xa8)
[   70.385421] [<c033da9b>] (config_usb_cfg_link) from [<c011f417>] (configfs_symlink+0xb7/0x1c8)
[   70.385696] [<c011f417>] (configfs_symlink) from [<c00dcd8d>] (vfs_symlink+0x85/0xc0)
[   70.386010] [<c00dcd8d>] (vfs_symlink) from [<c00dce0b>] (SyS_symlinkat+0x43/0x70)
[   70.386261] [<c00dce0b>] (SyS_symlinkat) from [<c000ce41>] (ret_fast_syscall+0x1/0x5c)
[   70.386610] Code: eb04 4a0f 6e03 480f (e883) 0005
[   70.387346] ---[ end trace 8dba7c552e02f8fa ]---
[   70.387647] Kernel panic - not syncing: Fatal exception
[   70.387980] ---[ end Kernel panic - not syncing: Fatal exception
-----------------------

Steps to reproduce the kernel panic:

mount -t configfs none /config
mkdir /config/usb_gadget/g1
cd /config/usb_gadget/g1
echo 0x18d1 > idVendor
echo 0x4e26 > idProduct
mkdir strings/0x409
echo 0123459876 > strings/0x409/serialnumber
echo Asus > strings/0x409/manufacturer
echo Nexus7 > strings/0x409/product
mkdir configs/c.1
mkdir configs/c.1/strings/0x409
echo "Conf 1" > configs/c.1/strings/0x409/configuration
echo 120 > configs/c.1/MaxPower
mkdir functions/ptp.ptp
ln -s functions/ptp.ptp configs/c.1/ptp.ptp

Also MTP and PTP are mutually exclusive functions
so make sure we have only one of it linked to a
configuration at a time. Otherwise it opens up
another set of bug(s?).

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agousb:gadget:Add "state" attribute to android_device
Badhri Jagan Sridharan [Tue, 14 Jul 2015 22:46:11 +0000 (15:46 -0700)]
usb:gadget:Add "state" attribute to android_device

Added a device attribute to android_device to
determine USB_GADGET's state

Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I17f8903120df96bf2f4bf441940b53a87b818230

8 years agousb: gadget: Do not disconnect unregistered dev
Badhri Jagan Sridharan [Wed, 6 May 2015 20:40:15 +0000 (13:40 -0700)]
usb: gadget: Do not disconnect unregistered dev

configfs_composite_unbind sets the gadget data
to null. Therefore, add check in disconnect
function to make sure that cdev is not NULL.
Prints a WARN message if the driver tries to
redundantly disconnect a gadget.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Change-Id: I248cb7175d0dd9a51c18053dd39475d8b3284f6d

8 years agousb: gadget: Relocate f_accessory
Badhri Jagan Sridharan [Mon, 30 Mar 2015 22:32:22 +0000 (15:32 -0700)]
usb: gadget: Relocate f_accessory

3.18 kernel has reorganized drivers/usb/gadget
directory. Moving accessory gadget driver from
drivers/usb/gadget to drivers/usb/gadget/function

Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: If73c6df0537c4b1f51338ed3b0db817e51f06b4a

8 years agousb: gadget: Accessory:Migrate to USB_FUNCTION API
Badhri Jagan Sridharan [Mon, 24 Nov 2014 01:21:22 +0000 (17:21 -0800)]
usb: gadget: Accessory:Migrate to USB_FUNCTION API

This patch adds support to use Android accessory
gadget function through the
DECLARE_USB_FUNCTION_INIT interface.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Change-Id: Ib352752d5bc905fa1df9049b53eabf1294930db7

8 years agousb: gadget: Move gadget functions code
Badhri Jagan Sridharan [Fri, 27 Mar 2015 21:49:55 +0000 (14:49 -0700)]
usb: gadget: Move gadget functions code

3.18 kernel has reorganized drivers/usb/gadget
directory. Moving gadget functions drivers from
drivers/usb/gadget to drivers/usb/gadget/function

Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I1eab0190f8d42e3be1b4e91ad3bc3a2dc853b0ef

8 years agousb:gadget:audio_source: Move to USB_FUNCTION API
Badhri Jagan Sridharan [Sun, 23 Nov 2014 21:51:28 +0000 (13:51 -0800)]
usb:gadget:audio_source: Move to USB_FUNCTION API

This patch adds support to use audio_source
gadget function through DECLARE_USB_FUNCTION_INIT
interface.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Change-Id: I1fc6c9ea07105ae4eb785eebd3bb925bfdd8bc6b

8 years agousb: gadget: Add function devices to the parent
Badhri Jagan Sridharan [Fri, 27 Mar 2015 21:15:19 +0000 (14:15 -0700)]
usb: gadget: Add function devices to the parent

Added create_function_device to create child
function devices for USB gadget functions.
Android UsbDeviceManager relies on communicating
to the devices created by the gadget functions
to implement functions such as audio_source.

Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I0df9ad86ac32d8cdacdea164e9fed49891b45fc2

8 years agousb: gadget: f_audio_source:replace deprecated API
Badhri Jagan Sridharan [Wed, 25 Mar 2015 21:37:23 +0000 (14:37 -0700)]
usb: gadget: f_audio_source:replace deprecated API

Replace snd_card_create with snd_card_new.
snd_card_create depcrecated starting form v3.15

Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I76f7d753812963d595055bce7d3e6518163482f5

8 years agousb: gadget: check for accessory device before disconnecting HIDs
Amit Pundir [Fri, 16 Jan 2015 00:11:10 +0000 (05:41 +0530)]
usb: gadget: check for accessory device before disconnecting HIDs

While disabling ConfigFS Android gadget, android_disconnect() calls
kill_all_hid_devices(), if CONFIG_USB_CONFIGFS_F_ACC is enabled, to free
the registered HIDs without checking whether the USB accessory device
really exist or not. If USB accessory device doesn't exist then we run into
following kernel panic:
----8<----
[  136.724761] Unable to handle kernel NULL pointer dereference at virtual address 00000064
[  136.724809] pgd = c0204000
[  136.731924] [00000064] *pgd=00000000
[  136.737830] Internal error: Oops: 5 [#1] SMP ARM
[  136.738108] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.0-rc4-00400-gf75300e-dirty #76
[  136.742788] task: c0fb19d8 ti: c0fa4000 task.ti: c0fa4000
[  136.750890] PC is at _raw_spin_lock_irqsave+0x24/0x60
[  136.756246] LR is at kill_all_hid_devices+0x24/0x114
---->8----

This patch adds a test to check if USB Accessory device exists before freeing HIDs.

Change-Id: Ie229feaf0de3f4f7a151fcaa9a994e34e15ff73b
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
8 years agousb: u_ether: Fix compile errors
Praneeth Bajjuri [Thu, 22 Jan 2015 22:38:56 +0000 (16:38 -0600)]
usb: u_ether: Fix compile errors

commit f1a1823ff24fa4e3412b5078f20021cf40834946
usb: gadget: u_ether: convert into module

changes qlen function definition. and this has to be fixed
accordingly in current u_ether driver.

This patch fixes following compile error in u_ether caused by commit.

drivers/usb/gadget/u_ether.c: In function 'rx_fill':
drivers/usb/gadget/u_ether.c:416:3: error: too few arguments to function 'qlen'
   if (++req_cnt > qlen(dev->gadget))
   ^

drivers/usb/gadget/u_ether.c: In function 'eth_start_xmit':
drivers/usb/gadget/u_ether.c:738:24: error: 'qmult' undeclared (first use in this function)
   if (dev->tx_qlen == (qmult/2)) {

which was caused by commits
commit 79467317949e1621240f632acfb7453783bec2e7
USB: gadget: u_ether: Fix data stall issue in RNDIS tethering mode

commit 68b91e8c54f5c091986c5719631893b10eab760a
usb: u_ether: Add workqueue as bottom half handler for rx data path

Change-Id: Ic4e5a1e08cb688e5a606c7c1895f869d8f887b9f
Signed-off-by: Praneeth Bajjuri <praneeth@ti.com>
8 years agousb: gadget: Add Uevent to notify userspace
Badhri Jagan Sridharan [Mon, 15 Dec 2014 18:44:47 +0000 (10:44 -0800)]
usb: gadget: Add Uevent to notify userspace

Android userspace UsbDeviceManager relies on the
uevents generated by the composition driver to
generate user notifications. This CL adds uevents
to be generated whenever USB changes its state
i.e. connected, disconnected, configured.

This CL also intercepts the setup requests from
the usb_core anb routes it to the specific
usb function if required.

Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: Ib3d3a78255a532f7449dac286f776c2966caf8c1

8 years agousb: gadget: configfs: Add usb_function ptr to fi struct
Badhri Jagan Sridharan [Tue, 16 Dec 2014 00:42:27 +0000 (16:42 -0800)]
usb: gadget: configfs: Add usb_function ptr to fi struct

Add a pointer to the usb_function inside the
usb_function_instance structure to service
functions specific setup requests even before
the function gets added to the usb_gadget

Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I6f457006f6c5516cc6986ec2acdf5b1ecf259d0c

8 years agousb: gadget: mtp/ptp: Migrate functions to the USB_FUNCTION interface
Badhri Jagan Sridharan [Tue, 18 Nov 2014 05:11:23 +0000 (21:11 -0800)]
usb: gadget: mtp/ptp: Migrate functions to the USB_FUNCTION interface

This patch adds support to use mtp/ptp gadget functions
through the DECLARE_USB_FUNCTION_INIT interface.

enabling USB_CONFIGFS_F_MTP config compiles f_mtp.c
thereby providing support for MTP gadget

enabling USB_CONFIGFS_F_PTP config compiles f_ptp.c
thereby providing support for PTP gadget

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Change-Id: I38d7b570e8886d155ef10cd2c839b2232dcb3158

8 years agoUSB: gadget: rndis: Add module parameter for DL max packets per xfer
xerox_lin [Thu, 4 Sep 2014 08:01:59 +0000 (16:01 +0800)]
USB: gadget: rndis: Add module parameter for DL max packets per xfer

Currently DL aggregation is supported in RNDIS driver and is set to
3 by default. And there is no support to change downlink maximum
packets per transfer at runtime through module parameter. Hence add
module parameter for DL maximum packets per transfer to change it at
runtime.

echo 6 > /sys/module/g_android/parameters/rndis_dl_max_pkt_per_xfer

To disable DL aggregation during runtime,

echo 1 > /sys/module/g_android/parameters/rndis_dl_max_pkt_per_xfer

Change-Id: I3a1d0bc97358e2b6f233df7ae8725fb507de50db
Signed-off-by: Xerox Lin <xerox_lin@htc.com>
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
8 years agondis: Add debug support to disable RNDIS Multipacket Feature
Badhri Jagan Sridharan [Thu, 18 Sep 2014 17:48:48 +0000 (10:48 -0700)]
ndis: Add debug support to disable RNDIS Multipacket Feature

This change adds module param which allows to disable RNDIS
Multi-packet Feature (Aggregation support in Downlink path)
as this feature is enabled by default.

To disable use this param before moving to RNDIS Composition:
echo 1 > /sys/module/g_android/parameters/rndis_multipacket_dl_disable

Also counts errors as Rx errors if received RNDIS packets are
not following RNDIS message format as those packets are being
discarded.

Change-Id: I764430da78f2204af92e14bb279c11b24c7e4c67
Signed-off-by: Mayank Rana <mrana@codeaurora.org>
8 years agoRNDIS: Add Data aggregation (multi packet) support
Badhri Jagan Sridharan [Thu, 18 Sep 2014 17:46:08 +0000 (10:46 -0700)]
RNDIS: Add Data aggregation (multi packet) support

Add data aggregation support using RNDIS Multi Packet feature
to achieve better UDP Downlink throughput. Max 3 RNDIS Packets
aggregated into one RNDIS Packet with this implementation.

With this change, seeing UDP Downlink throughput increase
from 90 Mbps to above 100 Mbps when using Iperf and sending
data more than 100 Mbps.

Change-Id: I21c39482718944bb1b1068bdd02f626531e58f08
Signed-off-by: Mayank Rana <mrana@codeaurora.org>
Signed-off-by: Rajkumar Raghupathy <raghup@codeaurora.org>
8 years agoUSB: gadget: u_ether: Fix data stall issue in RNDIS tethering mode
Badhri Jagan Sridharan [Thu, 18 Sep 2014 17:42:41 +0000 (10:42 -0700)]
USB: gadget: u_ether: Fix data stall issue in RNDIS tethering mode

For dual speed gadget, with current no. of request(10), there is
possibility of corner case occurence where all 10 reuqests are queued
to HW without setting IOC bit, which could lead to data stall in
RNDIS tethering and RNDIS local networking.

With this patch, counter will be incremented before queueing request to
HW and sets IOC bit for every nth request due to which the corner case
of all requests queued to HW without IOC bit set will be avoided.

Change-Id: I26515bfd9bbc8f7af38be7835692143f7093118a
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
8 years agousb: gadget: prevent change of Host MAC address of 'usb0' interface
taeju.park [Fri, 14 Sep 2012 05:09:03 +0000 (14:09 +0900)]
usb: gadget: prevent change of Host MAC address of 'usb0' interface

On windows 7 platform, previously allocated ip address is maintained.
However, Host MAC address of 'usb0' interface is changed when the
tethering driver re-enumerated. Thus, the tethering network driver
can't be allocated ip address from dhcp. It causes connection delay
between host and phone for usb tethering.

This patch prevents from changing Host MAC address of 'usb0' interface.
In other words, this patch maintains the Host MAC address allocated when
first tethering driver although the driver is re-enumerated. However,
after reboot, the Host MAC address can be changed.

Change-Id: I43add9925e9d6d90c56cffbd3ed999104448f818
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
8 years agousb: u_ether: Add workqueue as bottom half handler for rx data path
Badhri Jagan Sridharan [Thu, 25 Sep 2014 01:58:23 +0000 (18:58 -0700)]
usb: u_ether: Add workqueue as bottom half handler for rx data path

u_ether driver passes rx data to network layer and resubmits the
request back to usb hardware in interrupt context. Network layer
processes rx data by scheduling tasklet. For high throughput
scenarios on rx data path driver is spending lot of time in interrupt
context due to rx data processing by tasklet and continuous completion
and re-submission of the usb requests which results in watchdog bark.
Hence move the rx data processing and usb request submission to a
workqueue bottom half handler.

Change-Id: I316de8e267997137ac189a8b7b2846fa325f4a5a
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
8 years agousb: Add support for rndis uplink aggregation
xerox_lin [Thu, 14 Aug 2014 06:48:44 +0000 (14:48 +0800)]
usb: Add support for rndis uplink aggregation

RNDIS protocol supports data aggregation on uplink and can help
reduce mips by reducing number of interrupts on device. Throughput
also improved by 20-30%. Aggregation is disabled by setting
aggregation packet size to 1. To help better UL throughput, set
as ul aggregation support to 3 rndis packets by default. It can be
configured via module parameter: rndis_ul_max_pkt_per_xfer.

Change-Id: I0b62a21a5c3ceb6b04933d0d6da33301dbafe493
Signed-off-by: Vamsi Krishna <vskrishn@codeaurora.org>
Signed-off-by: Xerox Lin <xerox_lin@htc.com>
8 years agoUSB: rndis: Free the rndis response queue during REMOTE_NDIS_RESET_MSG
xerox_lin [Mon, 18 Aug 2014 13:54:23 +0000 (21:54 +0800)]
USB: rndis: Free the rndis response queue during REMOTE_NDIS_RESET_MSG

When rndis data transfer is in progress, some Windows7 Host PC is not
sending the GET_ENCAPSULATED_RESPONSE command for receiving the response
for the previous SEND_ENCAPSULATED_COMMAND processed.

The rndis function driver appends each response for the
SEND_ENCAPSULATED_COMMAND in a queue. As the above process got corrupted,
the Host sends a REMOTE_NDIS_RESET_MSG command to do a soft-reset.
As the rndis response queue is not freed, the previous response is sent
as a part of this REMOTE_NDIS_RESET_MSG's reset response and the Host
blocks any more Rndis transfers.

Hence free the rndis response queue as a part of this soft-reset so that
the current response for REMOTE_NDIS_RESET_MSG is sent properly during the
response command.

Change-Id: I8eff3849db452fe01b7d1fe4140ef1f1ad3f4fd4
Signed-off-by: Rajkumar Raghupathy <raghup@codeaurora.org>
Signed-off-by: Xerox Lin <xerox_lin@htc.com>
8 years agousb: gadget: f_audio_source: Fixed USB Audio Class Interface Descriptor
Anson Jacob [Mon, 23 Jun 2014 11:14:01 +0000 (19:14 +0800)]
usb: gadget: f_audio_source: Fixed USB Audio Class Interface Descriptor

Fixed Android Issue #56549.

When both Vendor Class and Audio Class are activated for AOA 2.0,
the baInterfaceNr of the AudioControl Interface Descriptor points
to wrong interface numbers. They should be pointing to
Audio Control Device and Audio Streaming interfaces.

Replaced baInterfaceNr with the correct value.

Change-Id: Iaa083f3d97c1f0fc9481bf87852b2b51278a6351
Signed-off-by: Anson Jacob <ansonkuzhumbil@gmail.com>
8 years agousb: gadget: f_audio_source: change max ISO packet size
Anson Jacob [Tue, 1 Jul 2014 10:17:20 +0000 (18:17 +0800)]
usb: gadget: f_audio_source: change max ISO packet size

Re-applying from
https://gitorious.org/shr/linux/commit/eb4c9d2db894c3492c0a848581bd4f6790f93d5f

Most USB-AUDIO devices are limited to 256 byte for max iso buffer size.
If a IN_EP_MAX_PACKET_SIZE is bigger than a USB-AUDIO device's max iso
buffer size, it will cause noise. This patch will prevent this case as
possibe by reducing packet size. When using 44.1khz, 2ch, 16bit audio
data, if max packet size is bigger than 176 bytes, it's no problem.

Credits to: Iliyan Malchev <malchev@google.com>

Change-Id: Ic2a1c19ea65d5fb42bf12926b51b255b465d7215
Signed-off-by: Anson Jacob <ansonkuzhumbil@gmail.com>
8 years agousb: gadget: f_accessory: Enabled Zero Length Packet (ZLP) for acc_write
Anson Jacob [Mon, 23 Jun 2014 11:07:44 +0000 (19:07 +0800)]
usb: gadget: f_accessory: Enabled Zero Length Packet (ZLP) for acc_write

Accessory connected to Android Device requires
Zero Length Packet (ZLP) to be written when data
transferred out from the Android device are multiples
of wMaxPacketSize (64bytes (Full-Speed) / 512bytes (High-Speed))
to end the transfer.

Change-Id: Ib2c2c0ab98ef9afa10e74a720142deca5c0ed476
Signed-off-by: Anson Jacob <ansonkuzhumbil@gmail.com>
8 years agodrivers: usb: gadget: 64-bit related type fixes
Greg Hackmann [Mon, 24 Feb 2014 18:19:13 +0000 (10:19 -0800)]
drivers: usb: gadget: 64-bit related type fixes

Change-Id: I2f9b12e1e0cdfe64ffe20db78d319a6221821184
Signed-off-by: Greg Hackmann <ghackmann@google.com>
8 years agousb: gadget: f_accessory: move userspace interface to uapi
Colin Cross [Thu, 7 Nov 2013 21:08:39 +0000 (13:08 -0800)]
usb: gadget: f_accessory: move userspace interface to uapi

Move the entire contents of linux/usb/f_accessory.h header to uapi,
it only contains a userspace interface.

Change-Id: Ieb5547da449588ae554988a201c0e6b4e3afc531
Signed-off-by: Colin Cross <ccross@android.com>
8 years agousb: gadget: f_mtp: move userspace interface to uapi
Colin Cross [Thu, 7 Nov 2013 21:08:15 +0000 (13:08 -0800)]
usb: gadget: f_mtp: move userspace interface to uapi

Move the most of linux/usb/f_mtp.h header to uapi.  Move the only
remaining structure definition into f_mtp.c, the only place that
uses it.

Change-Id: I952c1a9dc15c36bf295a0eb4d74b6b1ad912ed03
Signed-off-by: Colin Cross <ccross@android.com>
8 years agoUSB: remove duplicate out endpoint creation in MTP mode
Peter Oh [Thu, 12 Sep 2013 01:42:18 +0000 (01:42 +0000)]
USB: remove duplicate out endpoint creation in MTP mode

Android MTP gadget uses 3 endpoints which are 1 in endpoint,
1 out endpoint, and 1 interrupt endpoint. However when MTP
gadget creates its endpoints, it creates the out endpoint twice
and overwrites the first created out endpoint with the second one,
so that it causes a leak of endpoint resources.

Change-Id: Iba82950095610b26b362f4b10a67cedfb1fee366
Signed-off-by: Peter Oh <poh@broadcom.com>
Reviewed-on: http://mps-gerrit.broadcom.com/37744
Reviewed-by: Graham Williams <gwilli@broadcom.com>
Reviewed-by: John Garry <jgarry@broadcom.com>
Branch-Open: Branch Status <branch_status_noreply@broadcom.com>
Reviewed-by: Checkpatch Status <checkpatch_status_noreply@broadcom.com>
Reviewed-by: Joyjit Nath <joyjit@broadcom.com>
Tested-by: AutoSubmit Status <autosubmit_status_noreply@broadcom.com>
8 years agousb: gadget: Fix android gadget driver build
Benoit Goby [Tue, 6 Nov 2012 02:47:08 +0000 (18:47 -0800)]
usb: gadget: Fix android gadget driver build

Removed obsolete f_adb function

Change-Id: Idfb4110429bc0ea63f493c68ad667f49ca471987
Signed-off-by: Benoit Goby <benoit@android.com>
8 years agousb: gadget: android: Fixes and hacks to make android usb gadget compile on 3.8
Arve Hjønnevåg [Wed, 28 Nov 2012 03:29:04 +0000 (19:29 -0800)]
usb: gadget: android: Fixes and hacks to make android usb gadget compile on 3.8

Change-Id: I332a6802dbd49b4018b9318b8621d26ed94c955d
Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agousb: otg: otg-wakelock: Fix build for 3.7
Arve Hjønnevåg [Tue, 27 Nov 2012 00:09:13 +0000 (16:09 -0800)]
usb: otg: otg-wakelock: Fix build for 3.7

Signed-off-by: Arve Hjønnevåg <arve@android.com>
8 years agousb: gadget: accessory: Fix section mismatch (again)
Todd Poynor [Wed, 28 Nov 2012 21:03:40 +0000 (13:03 -0800)]
usb: gadget: accessory: Fix section mismatch (again)

create_bulk_endpoints should not be __init since it is called when
accessory is enabled.

Change-Id: Iac6e9f29d53c93760e926efd8e7603432632acb4
Signed-off-by: Todd Poynor <toddpoynor@google.com>
8 years agoUSB: gadget: f_audio_source: New gadget driver for audio output
Mike Lockwood [Fri, 11 May 2012 16:01:08 +0000 (09:01 -0700)]
USB: gadget: f_audio_source: New gadget driver for audio output

This driver presents a standard USB audio class interface to the host
and an ALSA PCM device to userspace

Change-Id: If16b14a5ff27045f9cb2daaf1ae9195c5eeab7d0
Signed-off-by: Mike Lockwood <lockwood@google.com>
8 years agoUSB: gadget: f_accessory: Add support for HID input devices
Mike Lockwood [Mon, 26 Mar 2012 18:03:55 +0000 (11:03 -0700)]
USB: gadget: f_accessory: Add support for HID input devices

Change-Id: I4f1452db32508382df52acdc47c0eb395ae328c7
Signed-off-by: Mike Lockwood <lockwood@google.com>
8 years agoUSB: gadget: Add ACCESSORY_SET_AUDIO_MODE control request and ioctl
Mike Lockwood [Fri, 11 May 2012 16:00:40 +0000 (09:00 -0700)]
USB: gadget: Add ACCESSORY_SET_AUDIO_MODE control request and ioctl

The control request will be used by the host to enable/disable USB audio
and the ioctl will be used by userspace to read the audio mode

Change-Id: I81c38611b588451e80eacdccc417ca6e11c60cab
Signed-off-by: Mike Lockwood <lockwood@google.com>
8 years agousb: gadget: accessory: Fix section mismatch
Benoit Goby [Sat, 23 Jun 2012 01:17:10 +0000 (18:17 -0700)]
usb: gadget: accessory: Fix section mismatch

create_bulk_endpoints should not be __init since it is called when
accessory is enabled

Change-Id: If827a4531f0f6c15af938345163923186368e2a5
Signed-off-by: Benoit Goby <benoit@android.com>
8 years agousb: otg: otg-wakelock: Fix build for 3.4
Benoit Goby [Thu, 10 May 2012 23:41:40 +0000 (16:41 -0700)]
usb: otg: otg-wakelock: Fix build for 3.4

Change-Id: I97e21e9e6645bf18522675039e512f85fe836794
Signed-off-by: Benoit Goby <benoit@android.com>
8 years agousb: gadget: adb: Only enable the gadget when adbd is ready
Benoit Goby [Tue, 20 Mar 2012 01:56:52 +0000 (18:56 -0700)]
usb: gadget: adb: Only enable the gadget when adbd is ready

When adb is enabled, only connect the gadget when adbd is ready. If adbd
dies or is restarted (e.g. "adb root"), the gadget is disconnected when
the adb device is close, and it is re-connected once adb re-open the
device.

- Add callbacks to adb, similar to FunctionFs callbacks, to notify the
  gadget when the daemon is ready or closed.
- Refcount calls to android_enable/android_disable to enable the gadget
  only once all the function daemons are ready.
- Add enable/disble to android_usb_function to notify the function when
  it is added/removed from the list of enabled functions.

Change-Id: Id54ff85aec9cf8715c94b4f9bd6137a79ad58bfc
Signed-off-by: Benoit Goby <benoit@android.com>
8 years agousb: gadget: adb: do not set error flag when dequeuing req
Colin Cross [Fri, 9 Mar 2012 01:57:51 +0000 (17:57 -0800)]
usb: gadget: adb: do not set error flag when dequeuing req

When an ep_out req is dequeued because of userspace freezing,
don't set the error flag.

Change-Id: I680f1a1059b8ac2244aaa069e7d42dc44abf98e9
Signed-off-by: Colin Cross <ccross@android.com>
8 years agousb: gadget: adb: allow freezing in adb_read
Colin Cross [Mon, 5 Mar 2012 21:29:45 +0000 (13:29 -0800)]
usb: gadget: adb: allow freezing in adb_read

wait_event_interruptible in adb_read might return -ERESTARTSYS if
userspace is frozen during adb_read or another signal is delivered
to adb.  If so, don't set dev->error to avoid resetting the adb
connection.

Change-Id: I5a7baa013a9a3a3b5305de7e6a0d18546a560018
Signed-off-by: Colin Cross <ccross@android.com>