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LP5521/5523 chip detection functions are replaced with lp55xx common function,
lp55xx_detect_device().
Chip dependent address and values are configurable in each driver.
In init function, chip detection is executed.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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LP5521/5523 reset device functions are moved to lp55xx common driver.
Value of register address and value are chip dependent.
Those are configured in each driver.
In init function, reset command is executed.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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LP5521/5523 platform data functions are moved to lp55xx common driver.
New init function, lp55xx_init_device() is created.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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This patch is a preceding step for making common lp55xx init function.
Return code:
Do not use 'OR' arithmetic for the result.
If some error occurs, just return it.
Remove engine verification code:
To check whether internal engine works or not, many lines of code are executed.
However, this job is unnecessary during the chip initialization because
the engine usage is not mandatory but optional function.
LED engines are enabled when specific LED pattern is loaded.
Therefore, this verification code is removed.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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This patch is a preceding step for making common lp55xx init function.
LP5521_REG_R_CURRENT register code moved:
Chip specific code moved from lp5521_init_device() to lp5521_configure().
Remove engine init function:
LP5521 has internal program engines which are used for running LED patterns.
(blinking, ramp up/down and other emotional visual effects)
Engine initialization is done by reset command in lp5521_init_device().
Remove this duplicate code.
Return code:
Do not use 'OR' arithmetic for the result.
If some error occus, just return it.
Enable latency:
Use explicit named function, lp5521_wait_enable_done().
According to the datasheet, 500us is guaranteed time.
Thus wait time is changed from 1000us to 500us.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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LP5521 and LP5523 data structures have common features.
Use common lp55xx data structures rather than chip specific data.
Legacy code in probe is replaced with this new data structures.
lp55xx_chip : Common data between lp5521_chip and lp5523_chip
lp55xx_led : Common LED structure between lp5521_led and lp5523_led
lp55xx_platform_data : Common platform data between lp5521_platform_data and
lp5523_platform_data
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Change the name of chip data structure and platform data.
This patch is a preceding step for cleaning up lp5521/5523 probe and remove.
These data will be replaced with new lp55xx common data structures
in next patch.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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This patch supports basic common driver code for LP5521, LP5523/55231 devices.
( Driver Structure Data )
lp55xx_led and lp55xx_chip
In lp55xx common driver, two different data structure is used.
o lp55xx_led
control multi output LED channels such as led current, channel index.
o lp55xx_chip
general chip control such like the I2C and platform data.
For example, LP5521 has maximum 3 LED channels.
LP5523/55231 has 9 output channels.
lp55xx_chip for LP5521 ... lp55xx_led #1
lp55xx_led #2
lp55xx_led #3
lp55xx_chip for LP5523 ... lp55xx_led #1
lp55xx_led #2
.
.
lp55xx_led #9
( Platform Data )
LP5521 and LP5523/55231 have own specific platform data.
However, this data can be handled with just one platform data structure.
The lp55xx platform data is declared in the header.
This structure is derived from leds-lp5521.h and leds-lp5523.h
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Chip specific function is configured when the device is initialized.
So _configure() is moved to each device init function.
If chip configuration gets failed, the device is de-initialized in
each _init_device(), not probe().
For compile error fix, function type declarations are added.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Use explicit each driver function rather than raw command.
These function will be merged into the lp55xx common driver.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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To make LED unregistration code simple, new function, _unregister_leds()
is added in each driver.
This patch is a preceding step for lp55xx common driver architecture.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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To make LED initialization code simple, new function, _register_leds()
is added at each driver.
This patch is a preceding step for lp55xx common driver architecture.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Device de-initialization code is moved to _deinit_device() at each driver.
This patch is a preceding step for lp55xx common driver architecture.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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To make _probe() simple, device initialization code is moved to
_init_device() at each driver.
This patch is a preceding step for lp55xx common driver architecture.
leds-lp5521:
When 'lp5521_init_device()' gets failed, error handling should be 'fail1'
rather than 'fail2'.
fail1: releasing platform resource and return code
fail2: releasing allocated LED devices with handling 'fail1'
The 'lp5521_init_device()' is called before creating LED devices.
Thus, 'goto fail1' is proper error handler of this function.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixed the checkpatch warning as below:
WARNING: static const char * array should probably be static const char * const
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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This macro is used to create a struct pci_device_id array.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixed the checkpatch warning as below:
WARNING: suspect code indent for conditional statements (8, 8)
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixed the checkpatch warning as below:
WARNING: Avoid CamelCase: <devAttr>
Rename devAttr to attr.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixed the checkpatch warning as below:
WARNING: Avoid CamelCase: <devAttr>
Rename devAttr to attr.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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I spent a few minutes to understand why the code catching the mismatch case
by checking if k is 0 or not. And the code using "k - 1" as array index is
unusual.
This patch checks acceptable rate from the lowest rate, and then we don't need
to subtract k by 1. This change improves the readability.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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fails
Add lm3530_led_enable() and lm3530_led_disable() helper functions.
This ensures setting drvdata->enable to correct status if regulator_disable
fails.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
Acked-by: Milo Kim <milo.kim@ti.com>
Tested-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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The lp8788-keyled is a platform driver of lp8788-mfd. The platform
device is allocated when mfd_add_devices() is called in lp8788-mfd.
On the other hand, 'lp->dev' is the i2c client device.
Therefore, this 'platform_device' is a proper parent device in case
of resource managed mem alloc, registering led device and device
kernel messages.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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The DT binding for the pwm-leds devices are similar to the gpio-leds type.
LEDs are represented as sub-nodes of the pwm-leds device.
The code for handling the DT boot is based on the code found in the
leds-gpio driver and adapted to use PWMs instead of GPIOs.
To avoid having custom cleanup code in case of DT boot the newly created
devm_of_pwm_get() API is used to get the correct PWM instance.
For usage see:
Documentation/devicetree/bindings/leds/leds-pwm.txt
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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The code looks more nicer if we use:
while (i--)
instead:
if (i > 0)
for (i = i - 1; i >= 0; i--)
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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In order to be able to add device tree support for leds-pwm driver we need
to rearrange the data structures used by the drivers.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Update the driver to use the new API for requesting pwm so we can take
advantage of the pwm_lookup table to find the correct pwm to be used for the
LED functionality.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Support added only for leds (not for gpio's).
(cooloney@gmail.com: fix 2 building errors)
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.
CC: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit a99d76f leds: leds-gpio: use gpio_request_one
changed the leds-gpio driver to use gpio_request_one() instead
of gpio_request() + gpio_direction_output()
Unfortunately, it also made a semantic change that breaks the
leds-gpio driver.
The gpio_request_one() flags parameter was set to:
GPIOF_DIR_OUT | (led_dat->active_low ^ state)
Since GPIOF_DIR_OUT is 0, the final flags value will just be the
XOR'ed value of led_dat->active_low and state.
This value were used to distinguish between HIGH/LOW output initial
level and call gpio_direction_output() accordingly.
With this new semantic gpio_request_one() will take the flags value
of 1 as a configuration of input direction (GPIOF_DIR_IN) and will
call gpio_direction_input() instead of gpio_direction_output().
int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
{
..
if (flags & GPIOF_DIR_IN)
err = gpio_direction_input(gpio);
else
err = gpio_direction_output(gpio,
(flags & GPIOF_INIT_HIGH) ? 1 : 0);
..
}
The right semantic is to evaluate led_dat->active_low ^ state and
set the output initial level explicitly.
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reported-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED subsystem update from Bryan Wu.
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (47 commits)
leds: leds-lp5521: return an error code on error in probe()
leds: leds-clevo-mail: Use pr_* instead of printks
leds: leds-rb532: Fix checkpatch errors
leds: led-triggers: Fix checkpatch warnings
leds: ledtrig-backlight: Fix checkpatch error
leds: leds-wrap: Use <linux/io.h> instead of <asm/io.h>
leds: leds-wm8350: Use dev_err instead of printk
leds: leds-pwm: Fix checkpatch warning
leds: leds-pca955x: Use dev_info instead of printk
leds: leds-net48xx: Use linux/io.h instead of asm/io.h
leds: leds-lt3593: Fix checkpatch warnings
leds: leds-gpio: Use dev_info instead of printk
leds: leds-da903x: Fix checkpatch error and warnings
leds: leds-bd2802: Fix checkpatch warnings
leds: leds-adp5520: Fix checkpatch warnings
leds: led-class: Fix checkpatch warning
leds: leds-ns2: use devm_gpio_request_one
leds: leds-lt3593: use devm_gpio_request_one
leds: leds-gpio: use devm_gpio_request_one
leds: lp3944: Fix return value
...
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Pull ARM SoC board updates from Olof Johansson:
"This branch contains a set of various board updates for ARM platforms.
A few shmobile platforms that are stale have been removed, some
defconfig updates for various boards selecting new features such as
pinctrl subsystem support, and various updates enabling peripherals,
etc."
Fix up conflicts mostly as per Olof.
* tag 'boards' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (58 commits)
ARM: S3C64XX: Add dummy supplies for Glenfarclas LDOs
ARM: S3C64XX: Add registration of WM2200 Bells device on Cragganmore
ARM: kirkwood: Add Plat'Home OpenBlocks A6 support
ARM: Dove: update defconfig
ARM: Kirkwood: update defconfig for new boards
arm: orion5x: add DT related options in defconfig
arm: orion5x: convert 'LaCie Ethernet Disk mini v2' to Device Tree
arm: orion5x: basic Device Tree support
arm: orion5x: mechanical defconfig update
ARM: kirkwood: Add support for the MPL CEC4
arm: kirkwood: add support for ZyXEL NSA310
ARM: Kirkwood: new board USI Topkick
ARM: kirkwood: use gpio-fan DT binding on lsxl
ARM: Kirkwood: add Netspace boards to defconfig
ARM: kirkwood: DT board setup for Network Space Mini v2
ARM: kirkwood: DT board setup for Network Space Lite v2
ARM: kirkwood: DT board setup for Network Space v2 and parents
leds: leds-ns2: add device tree binding
ARM: Kirkwood: Enable the second I2C bus
ARM: mmp: select pinctrl driver
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg Kroah-Hartman:
"Here's the large driver core updates for 3.8-rc1.
The biggest thing here is the various __dev* marking removals. This
is going to be a pain for the merge with different subsystem trees, I
know, but all of the patches included here have been ACKed by their
various subsystem maintainers, as they wanted them to go through here.
If this is too much of a pain, I can pull all of them out of this tree
and just send you one with the other fixes/updates and then, after
3.8-rc1 is out, do the rest of the removals to ensure we catch them
all, it's up to you. The merges should all be trivial, and Stephen
has been doing them all in linux-next for a few weeks now quite
easily.
Other than the __dev* marking removals, there's nothing major here,
some firmware loading updates and other minor things in the driver
core.
All of these have (much to Stephen's annoyance), been in linux-next
for a while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
Fixed up trivial conflicts in drivers/gpio/gpio-{em,stmpe}.c due to gpio
update.
* tag 'driver-core-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (93 commits)
modpost.c: Stop checking __dev* section mismatches
init.h: Remove __dev* sections from the kernel
acpi: remove use of __devinit
PCI: Remove __dev* markings
PCI: Always build setup-bus when PCI is enabled
PCI: Move pci_uevent into pci-driver.c
PCI: Remove CONFIG_HOTPLUG ifdefs
unicore32/PCI: Remove CONFIG_HOTPLUG ifdefs
sh/PCI: Remove CONFIG_HOTPLUG ifdefs
powerpc/PCI: Remove CONFIG_HOTPLUG ifdefs
mips/PCI: Remove CONFIG_HOTPLUG ifdefs
microblaze/PCI: Remove CONFIG_HOTPLUG ifdefs
dma: remove use of __devinit
dma: remove use of __devexit_p
firewire: remove use of __devinitdata
firewire: remove use of __devinit
leds: remove use of __devexit
leds: remove use of __devinit
leds: remove use of __devexit_p
mmc: remove use of __devexit
...
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If "buf" wasn't equal to LP5521_REG_R_CURR_DEFAULT the probe fails but
we still return zero. I've changed it to print an error message and
return -EINVAL.
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Silences checkpatch warnings related to the use of printks.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following issues:
ERROR: code indent should use tabs where possible
WARNING: please, no spaces at the start of a line
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Jan-Simon Moeller <jansimon.moeller@gmx.de>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Jan-Simon Moeller <jansimon.moeller@gmx.de>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Jan-Simon Moeller <jansimon.moeller@gmx.de>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fixes the following type of warnings:
WARNING: Prefer netdev_warn(netdev, ... then dev_warn(dev, ...
then pr_warn(... to printk(KERN_WARNING ...
WARNING: quoted string split across lines
While at it also fix a coding style issue w.r.t braces.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following checkpatch error:
ERROR: space prohibited before that ':' (ctx:WxE)
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following checkpatch warning:
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following type of checkpatch warnings:
WARNING: Prefer netdev_err(netdev, ... then dev_err(dev, ...
then pr_err(... to printk(KERN_ERR ...
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following checkpatch warning:
WARNING: please, no space before tabs
FILE: leds/leds-pwm.c:29:
^Iunsigned int ^I^Iactive_low;$
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following checkpatch warning:
WARNING: Prefer netdev_info(netdev, ... then dev_info(dev, ...
then pr_info(... to printk(KERN_INFO ...
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following checkpatch warning:
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following type of checkpatch warnings:
WARNING: Prefer netdev_info(netdev, ... then dev_info(dev, ...
then pr_info(... to printk(KERN_INFO ...
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following checkpatch warning:
WARNING: Prefer netdev_info(netdev, ... then dev_info(dev, ... then pr_info(... to printk(KERN_INFO ...
FILE: leds/leds-gpio.c:105:
printk(KERN_INFO "Skipping unavailable LED gpio %d (%s)\n",
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following type of checkpatch error and warnings:
WARNING: please, no space before tabs
ERROR: trailing whitespace
WARNING: quoted string split across lines
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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Fixes the following type of checkpatch warnings:
WARNING: please, no space before tabs
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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