Greg Kroah-Hartman [Tue, 24 Mar 2015 19:47:24 +0000 (20:47 +0100)]
greybus: es1: allow the debug log to be stopped
If you write 0 to the debugfs file, the log will stop being updated.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 24 Mar 2015 19:45:31 +0000 (20:45 +0100)]
greybus: es1: separate usb_log enable/disable logic into different functions
One function shouldn't do two different things depending on a parameter
passed to it, so split usb_log_enable() into usb_log_disable()
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 24 Mar 2015 19:34:02 +0000 (20:34 +0100)]
greybus: es1: fix checkpatch warning about blank lines needed
Add a blank line in apb1_log_enable_read() to make checkpatch happy.
Oh, and it makes the code more readable too...
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 24 Mar 2015 19:32:40 +0000 (20:32 +0100)]
greybus: es1: move debugfs function to use kstrotoint_from_user()
No need to duplicate built-in functions that the kernel has, so have the
core kernel parse the userspace string. Saves us an allocation and
makes the logic simpler.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 24 Mar 2015 19:10:58 +0000 (20:10 +0100)]
greybus: es1: decimal modes are not what are wanted for debugfs
decimal is not octal, so use the proper mode settings for the debugfs
files.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 24 Mar 2015 19:08:12 +0000 (20:08 +0100)]
greybus: es1: struct file_operations needs to be const
We aren't changing these pointers, so mark them read-only as that is the
preferred way.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 24 Mar 2015 19:06:41 +0000 (20:06 +0100)]
greybus: es1: no need to check for NULL on debugfs_remove()
The function can, and even expects NULL, so don't check.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 24 Mar 2015 19:04:49 +0000 (20:04 +0100)]
greybus: es1: use <linux/uaccess.h> and not <asm/uaccess.h>
Asm is only for when you are doing arch-specific stuff, which we aren't
doing here.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 24 Mar 2015 19:03:39 +0000 (20:03 +0100)]
greybus: es1: fix tiny whitespace issues
No trailing spaces or spaces before tabs are allowed.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 24 Mar 2015 18:55:14 +0000 (19:55 +0100)]
greybus: es1: fix build warning for apb1_log_enable_write
It's "const char __user *buf", not "char __user *buf".
'make check' is your friend.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Alexandre Bailon [Mon, 23 Mar 2015 16:52:37 +0000 (17:52 +0100)]
greybus: Dump log from APB1
On AP module (form factor), we don't have access to APBridge JTAG or UART.
But sometime, we still need to get log from APBridge. Add a new request in control endpoint
to get APBridge logs.
Logs can be accessed using debugfs (greybus/apb1_log).
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Viresh Kumar [Fri, 20 Mar 2015 14:59:13 +0000 (20:29 +0530)]
greybus: core: Don't initialize greybus if it is disabled
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 19 Mar 2015 15:55:23 +0000 (16:55 +0100)]
greybus: gpio: add error messages to callbacks not propagating errors
Add error messages on failures to deactivate, set and get operation
handlers as any errors would not be detected by the upper layers (either
because the callbacks are declared void or expected to return a boolean
value).
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:55:22 +0000 (16:55 +0100)]
greybus: gpio: refuse to set value of input pins
Add warning and refuse to set output value for pin configured as input,
as the result of such an operation is undefined.
Remove incorrect todo-comment suggesting that the driver could
implicitly switch direction as part of the call.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:51:17 +0000 (16:51 +0100)]
greybus: gpio: clean up line-state allocation
Clean up allocation of line-state array.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:51:16 +0000 (16:51 +0100)]
greybus: gpio: use dev_err and dev_warn
Use the more informative dev_err and dev_warn for messages, and make the
messages more uniform.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:51:15 +0000 (16:51 +0100)]
greybus: gpio: fix error handling
Make sure to propagate any errors detected up the call chain.
This specifically means that we will detect failed connection init,
something which is now handled more gracefully by greybus core.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:51:14 +0000 (16:51 +0100)]
greybus: gpio: make gb_gpio_controller pointer naming consistent
Rename all struct gb_gpio_controller-pointer variables "ggc" for
consistency and readability reason.
This also fixes a bunch of lines that exceeded the 80 columns limit.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:51:13 +0000 (16:51 +0100)]
greybus: gpio: remove unnecessary explicit cast
Remove unnecessary explicit cast of line value.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:51:12 +0000 (16:51 +0100)]
greybus: gpio: remove overly defensive argument verification
Remove overly defensive argument verification in gpio-chip callbacks. We
should trust gpiolib to get this right (or we would not even get any
callback) just like the other gpio drivers do.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:51:11 +0000 (16:51 +0100)]
greybus: gpio: remove redundant argument verification
Remove redundant verification of gpio numbers (which have already been
verified in the gpio-chip callbacks) from greybus-operation helpers.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:51:10 +0000 (16:51 +0100)]
greybus: gpio: remove incorrect todo comments
The module reference count is incremented by gpiolib when a gpio is
requested, and the driver callbacks certainly do sleep.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:51:09 +0000 (16:51 +0100)]
greybus: gpio: fix truncated debounce times
Fix set_debounce, which silently truncated the time argument to 255us
even though we support 16-bit values.
Also remove the unnecessary explicit cast when verifying the argument.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:46:19 +0000 (16:46 +0100)]
greybus: operation: remove unnecessary cast
Remove unnecessary cast of the message size in gb_connection_recv.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:46:18 +0000 (16:46 +0100)]
greybus: operation: use dev_err in gb_operation_sync
Use the more informative dev_err in gb_operation_sync, which includes
the connection device name in the error message (which in turn encodes
the module, interface, bundle and cport ids).
Add missing braces to conditional-construct branches while at it.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:46:17 +0000 (16:46 +0100)]
greybus: connection: replace custom error function with dev_err
Remove custom connection error function and replace it with dev_err.
The standard error function provides more information in the message
prefix (e.g. includes the interface id), has a well-known semantics
(e.g. does does not add newlines to messages), and is even somewhat
shorter to type.
Note that some uses of the custom function were already adding double
newlines due to the non-standard semantics.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:46:16 +0000 (16:46 +0100)]
greybus: ap: clean up svc link management error path
Return immediately on bundle-init failure when processing SVC link up.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:46:15 +0000 (16:46 +0100)]
greybus: ap: fix typo in comment
Fix typo in svc_hotplug comment.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:46:14 +0000 (16:46 +0100)]
greybus: ap: fix svc handshake protocol check
Fix incorrect SVC handshake protocol check, which would only bail out if
both major and minor protocol versions supported by the SVC differed.
Since we currently only support one version of the protocol, upgrade the
debug message to warning and bail unless the protocol versions match
perfectly for now.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 19 Mar 2015 15:46:13 +0000 (16:46 +0100)]
greybus: usb: silence compiler warning
This driver is being rewritten, but let's silence a pointer-to-int-cast
compiler warning meanwhile.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Wed, 18 Mar 2015 06:11:39 +0000 (11:41 +0530)]
greybus: hid: don't support OUTPUT report over interrupt channel
There is no interrupt channel as such and so no need to support
->output_report().
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Thu, 19 Mar 2015 11:32:49 +0000 (17:02 +0530)]
greybus: core: place module_{init|exit}() right below the routines
To follow coding guidelines a bit :)
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Thu, 19 Mar 2015 11:32:48 +0000 (17:02 +0530)]
greybus: interface: remove double underscore from fn name
Also bring * closer to gb_interface_get_drvdata :)
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Thu, 19 Mar 2015 11:32:46 +0000 (17:02 +0530)]
greybus: operation: Fix comment mistake
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Thu, 19 Mar 2015 11:32:45 +0000 (17:02 +0530)]
greybus: operation: s/status/result to match field name
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Alexandre Bailon [Wed, 18 Mar 2015 14:42:51 +0000 (15:42 +0100)]
greybus: Export greybus debugfs folder
Add gb_debugfs_get method to access to gb_debug_root dentry,
in order to use it from other greybus modules.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Tue, 17 Mar 2015 17:24:30 +0000 (18:24 +0100)]
greybus: uart: remove packed-attribute from line-coding struct
Remove packed-attribute from line-coding struct, whose members are all
naturally aligned.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Tue, 17 Mar 2015 17:24:29 +0000 (18:24 +0100)]
greybus: pwm: fix config-request alignment
Fix alignment of the duty and period-fields in the config request,
which should follow the which-field without any inserted padding.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Tue, 17 Mar 2015 17:24:28 +0000 (18:24 +0100)]
greybus: gpio: fix set-debounce request alignment
Fix alignment of the usec-field in the set-debounce request, which
should follow the which-field without any inserted padding.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Tue, 17 Mar 2015 09:55:52 +0000 (10:55 +0100)]
greybus: connection: fix oops after failed init
Make sure not to call connection_exit for connections that have never
been initialised (e.g. due to failure to init).
This fixes oopses due to null-dereferences and use-after-free in
connection_exit callbacks (e.g. trying to remove a gpio-chip that has
never been added) when the bundle and interface are ultimately
destroyed.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Tue, 17 Mar 2015 09:55:51 +0000 (10:55 +0100)]
greybus: vibrator: fix memory leak in error path
Fix memory leak in connection_init error path.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Tue, 17 Mar 2015 09:55:50 +0000 (10:55 +0100)]
greybus: pwm: fix memory leak in error path
Fix memory leak in connection_init error path.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Mon, 16 Mar 2015 11:19:37 +0000 (16:49 +0530)]
greybus: hid: add HID class driver
This adds HID transport layer driver for Greybus. Most of the stuff is
implemented, but is untested.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Tue, 10 Mar 2015 09:11:12 +0000 (14:41 +0530)]
greybus: gpb: Fix print mistakes
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Mon, 2 Mar 2015 08:55:26 +0000 (09:55 +0100)]
greybus: connection: fix locking in gb_hd_connection_find
Fix unconditional re-enabling of interrupts in gb_hd_connection_find,
which can be called with local interrupts disabled from the USB
completion handler.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Alexandre Bailon [Mon, 2 Mar 2015 16:32:43 +0000 (17:32 +0100)]
greybus: gpio.c: fix a bad irq number
When it receive an interrupt, the function gb_gpio_request_recv doesn't
use the good gpio number to get the irq number. Then, the expected irq is never fired.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Mon, 2 Mar 2015 11:34:40 +0000 (12:34 +0100)]
greybus: operation: fix locking issues
Fix unconditional re-enabling of interrupts in various operation
functions that can all be called with local interrupts disabled from USB
completion handlers.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Mon, 2 Mar 2015 16:52:07 +0000 (08:52 -0800)]
greybus: es2: fix USB id to not be the same as ES1
We don't want to bind to the ES1 device, that would be bad.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Fri, 13 Feb 2015 06:58:04 +0000 (14:58 +0800)]
greybus: gpio: fix memory leaks at init and exit
Fix three related memory leaks in the init an exit callbacks, where the
gpio-lines array was never freed at all and the controller data wasn't
freed in the init error path.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Matt Porter [Tue, 17 Feb 2015 15:48:23 +0000 (10:48 -0500)]
greybus: gpio: add interrupt handling support
Adds gpio interrupt handling support using an irqchip/irqdomain
instantiation inside the GB GPIO driver. This implementation works
on older kernels such as 3.10 that do not have the gpiolib irqchip
helpers. Any line on a Greybus gpiochip may be configured as an
interrupt. Once configured, IRQ event messages received from a
module fire off the registered interrupt handler.
Signed-off-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Fri, 13 Feb 2015 03:28:09 +0000 (11:28 +0800)]
greybus: bundle: fix sleep-while-atomic in gb_bundle_destroy
Make sure to release the spin lock protecting the interface bundle lists
before tearing down the connections and removing the bundle device,
which are operations that may sleep.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Johan Hovold [Thu, 12 Feb 2015 03:22:47 +0000 (11:22 +0800)]
greybus: connection: fix non-atomic allocations under spin lock
Use GFP_ATOMIC for IDA memory allocations under spin lock, which must
not sleep.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Matt Porter [Tue, 3 Feb 2015 18:17:39 +0000 (13:17 -0500)]
greybus: operation: add missing gb_operation_response_send() export
Export gb_operation_response_send() for other modules
Signed-off-by: Matt Porter <mporter@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Tue, 27 Jan 2015 03:38:04 +0000 (09:08 +0530)]
greybus: spi:fix sparse warnings
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Michael Scott [Tue, 27 Jan 2015 20:14:09 +0000 (12:14 -0800)]
greybus: build: android: Fix script which locates .ko files and moves them into ramdisk
- Fixed incorrect use of $$GREYBUS_SRC_PATH variable
- Added quotes around find pattern to stop shell expansion of "*"
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Fri, 23 Jan 2015 07:37:45 +0000 (13:07 +0530)]
greybus: spi: add bridged-PHY spi protocol driver
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Thu, 22 Jan 2015 13:19:25 +0000 (21:19 +0800)]
greybus: es1.c: wait until the last possible minute to start the svc messages
When initializing the USB device, we were starting up the svc message
queue before the cport urbs were allocated. This might not be an issue
for "slower" machines, but not having any allocated urbs for a cport
might be an issue if we were to handle svc messages.
So wait until everything is properly initialized and allocated before
starting the svc urb.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Thu, 22 Jan 2015 12:33:41 +0000 (20:33 +0800)]
greybus: ap.c: our workqueue should be ordered
SVC messages come in in an "order", so don't mess them up by processing
them out of order. Fix this by making our work queue ordered, which
should keep everything in line.
Reported-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Michael Scott [Fri, 23 Jan 2015 00:22:47 +0000 (16:22 -0800)]
greybus: build: android: add all greybus modules to the build
We now have several modules generated by the greybus build.
Let's add any *.ko files we find to the buid.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Michael Scott [Fri, 23 Jan 2015 00:22:20 +0000 (16:22 -0800)]
greybus: build: android: replace hard-coded build destination with variable
Make sure destination for greybus modules is consistent and easier to maintain
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Fri, 23 Jan 2015 02:06:24 +0000 (10:06 +0800)]
greybus: Revert "protocol: dedup protocol find code"
This reverts commit
241b5fefc54eae95239b0f7dc4e2b0db49457729 as it's
wrong, we want to insert into the correct place in the list.
Reported-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Fri, 23 Jan 2015 02:05:58 +0000 (10:05 +0800)]
greybus: Revert "protocol.c: fix a kernel panic caused by __gb_protocol_register"
This reverts commit
57131bf309d34568dd3b8f8e9da7a7ba25e9495e, it isn't
going to be needed as the patch this fixes will be reverted.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Thu, 22 Jan 2015 06:40:38 +0000 (12:10 +0530)]
greybus: i2c: fix name conflict between function and struct: gb_i2c_transfer_request
'gb_i2c_transfer_request' is the name given to a function and a struct. Though
we don't get any compilation errors/warnings about it, but the names should be
unique.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Thu, 22 Jan 2015 07:12:39 +0000 (12:42 +0530)]
greybus: i2c: fix name conflict between function and struct: gb_i2c_transfer_response
'gb_i2c_transfer_response' is the name given to a function and a struct. Though
we don't get any compilation errors/warnings about it, but the names should be
unique.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Alexandre Bailon [Thu, 22 Jan 2015 07:23:37 +0000 (15:23 +0800)]
greybus: protocol.c: fix a kernel panic caused by __gb_protocol_register
__gb_protocol_register check if the protocol is not already registred,
and then register it. It register in existing->lists but at this point,
existing is always NULL (we exist just before if not).
Use gb_protocols instead.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Wed, 21 Jan 2015 12:42:37 +0000 (18:12 +0530)]
greybus: remove unused version-response structs
These aren't used anymore and so can be removed.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Wed, 21 Jan 2015 12:42:36 +0000 (18:12 +0530)]
greybus: create get_version() routines with the help of a macro
This gets rid of lots of duplication of code.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Wed, 21 Jan 2015 12:42:35 +0000 (18:12 +0530)]
greybus: uart: s/REQ/TYPE
Request type for all other protocols is defined like: GB_<protocol>_TYPE_<operation>,
but for UART is like: GB_<protocol>_REQ_<operation>.
Replace REQ with TYPE to make it consistent. It will also be useful in a later
patch that creates get_version() routines with the help of a macro.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Wed, 21 Jan 2015 10:40:41 +0000 (16:10 +0530)]
greybus: Remove "gb-" prefix from .c files
Some files are still prefixed with "gb-" with the reasoning that the modules
would be named so, i.e. gb-*.ko. But this can be done by playing a bit in
Makefile instead and keep uniform naming of .c files.
Lets try it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Viresh Kumar [Wed, 21 Jan 2015 10:40:40 +0000 (16:10 +0530)]
greybus: Remove "-gb" suffix from .c files
Some files are prefixed with "gb-" and some are suffixed with "-gb". The
rationale behind the first one is that the modules would be named so, i.e.
gb-*.ko. But there is no reason to keep the "-gb" suffix in the second case.
Remove the unnecessary suffix.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Wed, 21 Jan 2015 02:24:15 +0000 (10:24 +0800)]
greybus: es2: add ES2 Greybus Host driver
This is just a copy of ES1 for now, things will start to diverge soon.
Any common functionality will be factored out over time.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Wed, 21 Jan 2015 01:47:21 +0000 (09:47 +0800)]
greybus: es1: no need to assign a variable we return directly
In next_free_urb(), just return usb_alloc_urb(), don't waste the time
assigning it to a local variable that we then return.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Rui Miguel Silva [Tue, 20 Jan 2015 17:26:18 +0000 (17:26 +0000)]
greybus: protocol: dedup protocol find code
in protocol register replace the protocol find code with the call to the already
existing function.
Signed-off-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Rui Miguel Silva [Tue, 20 Jan 2015 16:38:44 +0000 (16:38 +0000)]
greybus: es1: release urb on error path
if error is return when submiting the urb, we need to make sure to release the
urb from the pool, or from the dinamicly allocated. As in it, factor out the free
code and create the free_urb function.
Signed-off-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Rui Miguel Silva [Tue, 20 Jan 2015 16:31:45 +0000 (16:31 +0000)]
greybus: es1: remove useless statement
just return the result of usb_alloc_urb up, no need to rededunt check for NULL
Signed-off-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Perry Hung [Wed, 14 Jan 2015 21:19:27 +0000 (16:19 -0500)]
greybus: gb_operation: drop operation refcount on cancel
An extra reference is taken out on an operation in
gb_operation_request_send(). If the response never arrives, we need to
put back the reference.
Signed-off-by: Perry Hung <perry@leaflabs.com>
Tested-by: Mitchell Tasman <tasman@leaflabs.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Perry Hung [Wed, 14 Jan 2015 21:19:26 +0000 (16:19 -0500)]
greybus: gb_operation: replace timeout workqueue
If an operation is issued and the response never comes back,
gb_operation_timeout() cancels the operation but never wakes up the
waiter in gb_operation_request_send().
This patch removes the timeout workqueue and changes the request wait to
wait_for_completion_interruptible_timeout(), with timeout set to
OPERATION_TIMEOUT_DEFAULT.
Signed-off-by: Perry Hung <perry@leaflabs.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Bill Pemberton [Fri, 16 Jan 2015 18:57:32 +0000 (13:57 -0500)]
greybus: gpio-gb: remove checks for negative offset variable
offset is defined as unsigned so there is no point checking for
negative values of offset.
Signed-off-by: Bill Pemberton <wfp5p@worldbroken.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Bill Pemberton [Fri, 16 Jan 2015 02:18:27 +0000 (21:18 -0500)]
greybus: Add FIXME warnings for possible NULL dereferences
Signed-off-by: Bill Pemberton <wfp5p@worldbroken.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Bill Pemberton [Fri, 16 Jan 2015 02:18:26 +0000 (21:18 -0500)]
greybus: gb-vibrator: remove useless if in timeout_store()
val is an unsigned long so there is no point in checking if it is less
than zero.
Signed-off-by: Bill Pemberton <wfp5p@worldbroken.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Thu, 15 Jan 2015 01:08:03 +0000 (17:08 -0800)]
greybus: Move the es1_ap_desc.c file to Documentation directory
This .c file isn't needed by the kernel driver, it's there for firmware
developers only, so just move it into the Documentation directory to
reduce confusion.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Thu, 15 Jan 2015 01:08:02 +0000 (17:08 -0800)]
greybus: rename es1-ap-usb.ko to gb-es1.ko
Use the "gb-" prefix for the ES1 Host controller driver.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Thu, 15 Jan 2015 01:08:01 +0000 (17:08 -0800)]
greybus: rename battery-gb.c to gb-battery.c
Use the "gb" prefix for module names, not a suffix.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Thu, 15 Jan 2015 01:08:00 +0000 (17:08 -0800)]
greybus: rename vibrator-gb.ko to gb-vibrator.ko
Use the "gb" prefix for module names, not a suffix.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Thu, 15 Jan 2015 01:07:59 +0000 (17:07 -0800)]
greybus: rename gpbridge.ko to gb-phy.ko
This module provides the Bridged PHY protocols, so name the thing
properly.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Wed, 14 Jan 2015 22:55:24 +0000 (14:55 -0800)]
greybus: Makefile: provide install target
Provide an install Makefile target for those that want to install the
kernel modules.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
--
v3: resend to list, somehow this thread got taken private and v2 never
made it there.
v2: add -a option to depmod, thanks to Mitchell
Alexandre Bailon [Wed, 14 Jan 2015 09:23:49 +0000 (10:23 +0100)]
greybus: i2c-gb: fix bad message size in gb_i2c
The data_in_size variable was set to 1 for the status byte.
But now, the status byte has move to header. Then, the status byte
is "allocated" twice and cause bad message size error.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Wed, 24 Dec 2014 00:09:26 +0000 (16:09 -0800)]
greybus: sysfs: put a \n at the end of all sysfs files
Right now some sysfs attributes have \n and some do not, so fix that and
put \n at the end of all of them to make it easier to parse things
properly in userspace.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Wed, 24 Dec 2014 21:12:10 +0000 (13:12 -0800)]
greybus: protocol: fix oops when no protocol is assigned
When removing a connection with no protocol assigned to it, the kernel
oopses as we always thought protocols were always there.
Fix that problem, oopses are bad.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Wed, 24 Dec 2014 21:01:45 +0000 (13:01 -0800)]
greybus: protocol: name protocols.
We want to be able to "blame" a protocol for things at times, so give
them a name we can refer to them by. Announce when they are added or
removed from the system so we have a chance to know what is going on
in the kernel logs.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Wed, 24 Dec 2014 21:01:46 +0000 (13:01 -0800)]
greybus: module: get rid of global list of modules
Use the list that the driver core keeps of our structure, no need to
duplicate it with a local list as well. This gets rid of a static lock
too, always a nice thing to do.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Wed, 24 Dec 2014 21:01:44 +0000 (13:01 -0800)]
greybus: i2c-gb: move i2c protocol into the gpbridge driver
The i2c protocol belongs in the gpbridge driver, so move it
there.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Wed, 24 Dec 2014 21:01:43 +0000 (13:01 -0800)]
greybus: gpb: Create a "GP Bridge" kernel module
This bundles together the existing GP Bridged PHY protocols that were
part of the Greybus core: USB, UART, SDIO, PWM, and GPIO. This is now a
stand-alone kernel module. More logic will be moving here in the future
to handle bridged devices.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Wed, 24 Dec 2014 21:01:42 +0000 (13:01 -0800)]
greybus: battery-gb: move the battery protocol out to a stand-alone module
This moves the battery class protocol to be a stand-alone kernel module.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Wed, 24 Dec 2014 21:01:41 +0000 (13:01 -0800)]
greybus: vibrator-gb: move vibrator protocol to a stand-alone module.
We can't use the gb_protocol_driver() macro here as we need to do some
init and exit logic when loading and removing, so "open code" the module
init and exit functions.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Wed, 24 Dec 2014 21:01:40 +0000 (13:01 -0800)]
greybus: protocol: add a module owner to a protocol
Now that protocols can be in a module, we need to reference count them
to lock them into memory so they can't be removed while in use. So add
a module owner structure, and have it automatically be assigned when
registering the protocol.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Wed, 24 Dec 2014 21:01:39 +0000 (13:01 -0800)]
greybus: bundle: create GB_DEVICE_ID_BAD
Use a "name" for when we don't have a valid device id yet, instead of a
magic value of 0xff.
Reported-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Greg Kroah-Hartman [Tue, 23 Dec 2014 23:16:54 +0000 (15:16 -0800)]
greybus: i2c-gb: split out into a stand-alone kernel module.
This splits the i2c-gb protocol into a stand-alone kernel module.
It's not going to stay in this fashion for long, this was done to test
the "can a protcol be loaded later" logic. Future refactoring is going
to move the gpbridge protocols to a separate kernel module, where this
protocol is going to live.
But for now, split it out, it is good to test with, and shows a bug in
gbsim at the moment.
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 23 Dec 2014 23:16:53 +0000 (15:16 -0800)]
greybus: protocol: split binding of prototcols to connections out of init
When adding a new protocol to the system, walk all bundles and try to
hook up any connections that do not have a protocol already. This sets
the stage to allow for protocols to be loaded at any time, not just
before the device is seen in the system.
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Greg Kroah-Hartman [Tue, 23 Dec 2014 23:16:52 +0000 (15:16 -0800)]
greybus: export needed symbols for protocols
Protocol handlers need some greybus symbols, so export them so that they
can be built outside of the greybus core.
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>