Add a new color ID that is declared as MULTICOLOR as with the
multicolor framework declaring a definitive color is not accurate
as the node can contain multiple colors.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fix checkpatch errors and warnings for the LP5523.c device
driver.
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fix the checkpatch warnings for the use of the file permission macros.
In converting the file permissions to the DEVICE_ATTR_XX macros the
call back function names needed to be updated within the code.
This means that the lp55xx_ needed to be dropped in the name to keep in
harmony with the ABI documentation.
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes. Also, remove unnecessary
function sizeof_gpio_leds_priv().
This code was detected with the help of Coccinelle and, audited and
fixed manually.
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes. Also, remove unnecessary
function sizeof_ns2_led_priv().
This code was detected with the help of Coccinelle and, audited and
fixed manually.
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The leds-gpio driver mixes up the legacy GPIO flags with the
GPIO descriptor flags and passes a legacy flag to
devm_gpiod_get_index().
Fix this by replacing the flags variable with the strict
descriptor flag.
Fixes: 45d4c6de4e ("leds: gpio: Try to lookup gpiod from device")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Sometimes LED won't be turned off by LED_CORE_SUSPENDRESUME flag upon
system suspend.
led_set_brightness_nopm() uses schedule_work() to set LED brightness.
However, there's no guarantee that the scheduled work gets executed
because no one flushes the work.
So flush the scheduled work to make sure LED gets turned off.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Fixes: 81fe8e5b73 ("leds: core: Add led_set_brightness_nosleep{nopm} functions")
Signed-off-by: Pavel Machek <pavel@ucw.cz>
If the GPIO has not been configured yet, writing to inverted will raise
a kernel warning.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This driver provides a GPIO chip, so include <linux/gpio/driver.h>
and not the legacy <linux/gpio.h> header.
Cc: Andrew Jeffery <andrew@aj.id.au>
Cc: Joel Stanley <joel@jms.id.au>
Cc: Matt Spinler <mspinler@linux.vnet.ibm.com>
Cc: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The LP55xx driver is already using the of_gpio() functions to
pick a global GPIO number for "enable" from the device tree and
request the line. Simplify it by just using a GPIO descriptor.
Make sure to keep the enable GPIO line optional, change the
naming from "lp5523_enable" to "LP55xx enable" to reflect that
this is used on all LP55xx LED drivers.
Cc: Milo Kim <milo.kim@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Right now the driver uses only 3 LED modes:
0: On
1: HW Blinking (Interval 1)
3: Off
However, the controller supports a second HW blinking interval, which results
in 4 possible LED modes:
0: On
1: HW Blinking (Interval 1)
2: HW Blinking (Interval 2)
3: Off
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Drop the pointless and needlessly confusing casts of struct-device
pointers.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Several MFD child drivers register their class devices directly under
the parent device. This means you cannot blindly do devres conversions
so that deregistration ends up being tied to the parent device,
something which leads to use-after-free on driver unbind when the class
device is released while still being registered.
Fixes: 8d3b6a4001 ("leds: wm831x-status: Use devm_led_classdev_register")
Cc: stable <stable@vger.kernel.org> # 4.6
Cc: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Several MFD child drivers register their class devices directly under
the parent device. This means you cannot use devres so that
deregistration ends up being tied to the parent device, something which
leads to use-after-free on driver unbind when the class device is
released while still being registered.
Fixes: 11e1bbc116 ("leds: lm36274: Introduce the TI LM36274 LED driver")
Cc: stable <stable@vger.kernel.org> # 5.3
Cc: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Several MFD child drivers register their class devices directly under
the parent device. This means you cannot blindly do devres conversions
so that deregistration ends up being tied to the parent device,
something which leads to use-after-free on driver unbind when the class
device is released while still being registered.
Fixes: 50154e29e5 ("leds: lm3533: Use devm_led_classdev_register")
Cc: stable <stable@vger.kernel.org> # 4.6
Cc: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Several MFD child drivers register their class devices directly under
the parent device. This means you cannot blindly do devres conversions
so that deregistration ends up being tied to the parent device,
something which leads to use-after-free on driver unbind when the class
device is released while still being registered.
Fixes: eed16255d6 ("leds: da903x: Use devm_led_classdev_register")
Cc: stable <stable@vger.kernel.org> # 4.6
Cc: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Several MFD child drivers register their class devices directly under
the parent device. This means you cannot blindly do devres conversions
so that deregistration ends up being tied to the parent device,
something which leads to use-after-free on driver unbind when the class
device is released while still being registered.
Fixes: 375446df95 ("leds: 88pm860x: Use devm_led_classdev_register")
Cc: stable <stable@vger.kernel.org> # 4.6
Cc: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
clang points out that doing arithmetic between diffent enums is usually
a mistake:
drivers/leds/leds-lm355x.c:167:28: warning: bitwise operation between different enumeration types ('enum lm355x_tx2' and 'enum lm355x_ntc') [-Wenum-enum-conversion]
reg_val = pdata->pin_tx2 | pdata->ntc_pin;
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
drivers/leds/leds-lm355x.c:178:28: warning: bitwise operation between different enumeration types ('enum lm355x_tx2' and 'enum lm355x_ntc') [-Wenum-enum-conversion]
reg_val = pdata->pin_tx2 | pdata->ntc_pin | pdata->pass_mode;
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
In this driver, it is intentional, so add a cast to hide the false-positive
warning. It appears to be the only instance of this warning at the moment.
Fixes: b98d13c725 ("leds: Add new LED driver for lm355x chips")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
New drivers: aw2013, sgm3140, some fixes. Nothing much to see here,
next release should be more interesting.
-----BEGIN PGP SIGNATURE-----
iF0EABECAB0WIQRPfPO7r0eAhk010v0w5/Bqldv68gUCXtjlggAKCRAw5/Bqldv6
8mi4AJ9sFTwt9zcnIB3dZcD+C9J/GtCU7ACgwlN9UsQ1qvpEG1xE0mSgLlPvebQ=
=HymN
-----END PGP SIGNATURE-----
Merge tag 'leds-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds
Pull LED updates from Pavel Machek:
"New drivers: aw2013, sgm3140, some fixes
Nothing much to see here, next release should be more interesting"
* tag 'leds-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: add aw2013 driver
dt-bindings: leds: Add binding for aw2013
leds: trigger: remove redundant assignment to variable ret
leds: netxbig: Convert to use GPIO descriptors
leds: add sgm3140 driver
dt-bindings: leds: Add binding for sgm3140
leds: ariel: Add driver for status LEDs on Dell Wyse 3020
leds: pwm: check result of led_pwm_set() in led_pwm_add()
leds: tlc591xxt: hide error on EPROBE_DEFER
leds: tca6507: Include the right header
leds: lt3593: Drop surplus include
leds: lp3952: Include the right header
leds: lm355x: Drop surplus include
This commit adds support for AWINIC AW2013 3-channel LED driver.
The chip supports 3 PWM channels and is controlled with I2C.
Signed-off-by: Nikita Travkin <nikitos.tr@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The variable ret is being assigned with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This converts the NetXbig LED driver to use GPIO descriptors
instead of using the legacy interfaces in <linux/of_gpio.h>
and <linux/gpio.h> to iteratively parse the device tree for
global GPIO numbers.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Tested-by: Simon Guinot <simon.guinot@sequanux.org>
Add a driver for the SGMICRO SGM3140 Buck/Boost Charge Pump LED driver.
This device is controlled by two GPIO pins, one for enabling and the
second one for switching between torch and flash mode.
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This adds support for controlling the LEDs attached to the Embedded
Controller on a Dell Wyse 3020 "Ariel" board.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
led_pwm_set() now returns an error when setting the PWM fails.
Signed-off-by: Denis Osterland-Heim <Denis.Osterland@diehl.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
If devm_led_classdev_register_ext() fails with EPROBE_DEFER, we get:
tlc591xx 0-0040: couldn't register LED (null)
Only print the error if the error is something else than EPROBE_DEFER.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The TCA6507 optionally presents a GPIO controller, so include
<linux/gpio/driver.h> instead of the legacy <linux/gpio.h>.
Cc: NeilBrown <neilb@suse.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This driver is already including and using the proper
<linux/gpio/consumer.h> header, there is no need to include
the legacy <linux/gpio.h> header.
Cc: Daniel Mack <daniel@zonque.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This driver is using the GPIO descriptor API properly
as it should be but is including the legacy GPIO header
<linux/gpio.h>. Fix it by including <linux/gpio/consumer.h>
instead.
Cc: Tony Makkiel <tony.makkiel@daqri.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This driver includes <linux/gpio.h> but does not use
any symbols from that file, so drop the include.
Cc: G.Shark Jeong <gshark.jeong@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The warning message when a led is renamed due to name collition can fail
to show proper original name if init_data is used. Eg:
[ 9.073996] leds-gpio a0040000.leds_0: Led (null) renamed to red_led_1 due to name collision
Fixes: bb4e9af034 ("leds: core: Add support for composing LED class device names")
Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The bitfield 'enabled' should bit unsigned, so make it unsigned.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This member seems to was a way to pass PWM period to the LED.
Since there is no header anymore, this is useless.
Signed-off-by: Denis Osterland-Heim <Denis.Osterland@diehl.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The header is only used by leds_pwm.c, so move contents to leds_pwm.c
and remove it.
Apply minor changes suggested by checkpatch.
Remove deprecated and unused pwm_id member.
Suggested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Denis Osterland-Heim <Denis.Osterland@diehl.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
pwm_config(), pwm_enable() and pwm_disable() should get removed in the
long run. So update the driver to use the atomic API that is here to
stay.
A few side effects:
- led_pwm_set() now returns an error when setting the PWM fails.
- During .probe() the PWM isn't disabled implicitly by pwm_apply_args()
any more.
Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Tested-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
.pwm_period_ns is an unsigned integer. So when led->pwm_period_ns > 0
is false, we now assign 0 to a value that is already 0, so it doesn't
hurt and we can skip checking the actual value.
Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Tested-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This patch implemenets a driver to support the front panel LEDs of
SGI Octane (IP30) workstations.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
There is a spelling mistake in a dev_err message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/leds/leds-bd2802.c: In function 'bd2802_probe':
drivers/leds/leds-bd2802.c:663:35: warning:
variable 'pdata' set but not used [-Wunused-but-set-variable]
commit 4c3718f9d6 ("leds: bd2802: Convert to use GPIO descriptors")
left behind this unused variable.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This converts the NS2 LED driver to use GPIO descriptors.
We take care to request the GPIOs "as is" which is what
the current driver goes to lengths to achieve, then we use
GPIOs throughout.
As the nodes for each LED does not have any corresponding
device, we need to use the DT-specific accessors to get these
GPIO descriptors from the device tree.
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Nothing in the kernel includes the external header
<linux/platform_data/leds-kirkwood-ns2.h> so just push the
contents into the ns2 leds driver. If someone wants to use
platform data or board files to describe this device they
should be able to do so using GPIO machine descriptors but
in any case device tree should be the way forward for these
systems in all cases I can think of, and the driver already
supports that.
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Otherwise there's a noticeable glow even with brightness 0. Also
turning off the regulator can save additional power.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Move the relevant parts out of lm3692x_remove() and call it from
there. No functional change.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This moves lm3692x_init so it can be used from
lm3692x_brightness_set. Rename to lm3692_leds_enable to pair up
with lm3692x_leds_disable. No functional change.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
