device_get_next_child_node() bumps a reference counting of a returned variable.
We have to balance it whenever we return to the caller.
Fixes: 9a5c1c64ac ("leds: lm3692x: Change DT calls to fwnode calls")
Cc: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
There is no user of of*.h headers, but mod_devicetable.h.
Update header block accordingly.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
device_get_next_child_node() bumps a reference counting of a returned variable.
We have to balance it whenever we return to the caller.
In the older code the same is implied with device_for_each_child_node().
Fixes: 11e1bbc116 ("leds: lm36274: Introduce the TI LM36274 LED driver")
Fixes: a448fcf19c ("leds: lm36274: don't iterate through children since there is only one")
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
It's easy to miss necessary clean up, e.g. firmware node reference counting,
during error path in ->probe(). Make it more robust by moving to a single
point of return.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Regmap APIs should be selected, otherwise link can fail
ERROR: modpost: "__devm_regmap_init_i2c" [drivers/leds/leds-lm3532.ko] undefined!
Fixes: bc1b8492c7 ("leds: lm3532: Introduce the lm3532 LED driver")
Cc: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Since GPIO operations are NULL-aware, we don't need to duplicate
this check. Remove it and fold the rest of the code.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
LGM SSO is an OF dependent driver, so of_match_ptr() can be safely
removed.
Remove the unneeded of_match_ptr().
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The clock handling has a few issues:
- when getting second clock fails, the first one left prepared and enabled
- on ->remove() clocks are unprepared and disabled twice
Fix all these by converting to use bulk clock operations since both clocks
are mandatory.
Fixes: c3987cd2bc ("leds: lgm: Add LED controller driver for LGM SoC")
Cc: Amireddy Mallikarjuna reddy <mallikarjunax.reddy@linux.intel.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Introduce a helper to replace open coded container_of() calls.
At the same time move ldev member to be first in the struct el15203000_led,
that makes container_of() effectivelly a no-op.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Drop the bogus error code and let of_led_get() to take care about absent
of_node.
Fixes: e389240ad9 ("leds: Add managed API to get a LED from a device driver")
Cc: Jean-Jacques Hiblot <jjhiblot@ti.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-lp8860.c:105: warning: Function parameter or member 'lock' not described in 'lp8860_led'
drivers/leds/leds-lp8860.c:105: warning: Function parameter or member 'client' not described in 'lp8860_led'
drivers/leds/leds-lp8860.c:105: warning: Function parameter or member 'led_dev' not described in 'lp8860_led'
drivers/leds/leds-lp8860.c:105: warning: Function parameter or member 'regmap' not described in 'lp8860_led'
drivers/leds/leds-lp8860.c:105: warning: Function parameter or member 'eeprom_regmap' not described in 'lp8860_led'
drivers/leds/leds-lp8860.c:105: warning: Function parameter or member 'enable_gpio' not described in 'lp8860_led'
drivers/leds/leds-lp8860.c:105: warning: Function parameter or member 'regulator' not described in 'lp8860_led'
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-mlxreg.c:42: warning: Function parameter or member 'led_cdev' not described in 'mlxreg_led_data'
drivers/leds/leds-mlxreg.c:42: warning: Function parameter or member 'led_cdev_name' not described in 'mlxreg_led_data'
Cc: Vadim Pasternak <vadimp@nvidia.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-lm3697.c:60: warning: Function parameter or member 'enabled' not described in 'lm3697_led'
drivers/leds/leds-lm3697.c:60: warning: Function parameter or member 'num_leds' not described in 'lm3697_led'
drivers/leds/leds-lm3697.c:84: warning: Function parameter or member 'bank_cfg' not described in 'lm3697'
drivers/leds/leds-lm3697.c:84: warning: Function parameter or member 'num_banks' not described in 'lm3697'
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'lock' not described in 'lm3692x_led'
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'client' not described in 'lm3692x_led'
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'led_dev' not described in 'lm3692x_led'
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'regmap' not described in 'lm3692x_led'
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'enable_gpio' not described in 'lm3692x_led'
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'regulator' not described in 'lm3692x_led'
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'led_enable' not described in 'lm3692x_led'
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'model_id' not described in 'lm3692x_led'
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'boost_ctrl' not described in 'lm3692x_led'
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'brightness_ctrl' not described in 'lm3692x_led'
drivers/leds/leds-lm3692x.c:121: warning: Function parameter or member 'enabled' not described in 'lm3692x_led'
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-lm3530.c:113: warning: Function parameter or member 'brightness' not described in 'lm3530_data'
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Kumar SAHU <shreshthakumar.sahu@stericsson.com>
Cc: Dan Murphy <D.Murphy@motorola.com>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-lp3944.c:95: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
drivers/leds/leds-lp3944.c:126: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
drivers/leds/leds-lp3944.c:158: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Antonio Ospite <ospite@studenti.unina.it>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-is31fl32xx.c:85: warning: Function parameter or member 'sw_shutdown_func' not described in 'is31fl32xx_chipdef'
Cc: Pavel Machek <pavel@ucw.cz>
Cc: David Rivshin <drivshin@allworx.com>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Function returns void anyway.
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-blinkm.c: In function ‘blinkm_init_hw’:
drivers/leds/leds-blinkm.c:483:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
Cc: Jan-Simon Moeller <jansimon.moeller@gmx.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Jan-Simon Möller" <dl9pf@gmx.de>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-as3645a.c:198: warning: expecting prototype for as3645a_set_config(). Prototype was for as3645a_set_current() instead
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-bcm6328.c:97: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Fernández Rojas" <noltari@gmail.com>
Cc: Jonas Gorski <jogo@openwrt.org>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/led-class.c:521: warning: Function parameter or member 'dev' not described in 'devm_led_classdev_unregister'
drivers/leds/led-class.c:521: warning: Excess function parameter 'parent' description in 'devm_led_classdev_unregister'
Cc: Pavel Machek <pavel@ucw.cz>
Cc: John Lenz <lenz@cs.wisc.edu>
Cc: Richard Purdie <rpurdie@openedhand.com>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/leds-gpio-register.c:24: warning: Function parameter or member 'id' not described in 'gpio_led_register_device'
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fixes the following W=1 kernel build warning(s):
drivers/leds/trigger/ledtrig-cpu.c:52: warning: Function parameter or member 'ledevt' not described in 'ledtrig_cpu'
drivers/leds/trigger/ledtrig-cpu.c:52: warning: Excess function parameter 'evt' description in 'ledtrig_cpu'
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Check return value of lp5xx_read and if non-zero, jump to code at end of
the function, causing lp5523_stop_all_engines to be executed before
returning the error value up the call chain. This fixes the original
commit (248b57015f) which was reverted due to the University of Minnesota
problems.
Cc: stable <stable@vger.kernel.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210503115736.2104747-10-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 248b57015f.
Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.
Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted. It will be fixed up "correctly" in a
later kernel change.
The original commit does not properly unwind if there is an error
condition so it needs to be reverted at this point in time.
Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Cc: stable <stable@vger.kernel.org>
Fixes: 248b57015f ("leds: lp5523: fix a missing check of return value of lp55xx_read")
Link: https://lore.kernel.org/r/20210503115736.2104747-9-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
After device_get_match_data(), tlc591xx is not checked, add
check for it and also check np after dev_of_node.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This modifies MAINTAINER's file to remove Dan Murphy's email that is
bouncing (and does it globally). I hope that does not conflict too badly.
-----BEGIN PGP SIGNATURE-----
iF0EABECAB0WIQRPfPO7r0eAhk010v0w5/Bqldv68gUCYI8hzwAKCRAw5/Bqldv6
8ou+AKCujY+zj+9DYHXzdHgbS4RK9Y0gkgCgw/aMAou9/JopBqFNxAGeLkntR+U=
=BM1B
-----END PGP SIGNATURE-----
Merge tag 'leds-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds
Pull LED updates from Pavel Machek:
"Nothing too exciting here, just some fixes"
* tag 'leds-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: pca9532: Assign gpio base dynamically
leds: trigger: pattern: Switch to using the new API kobj_to_dev()
leds: LEDS_BLINK_LGM should depend on X86
leds: lgm: Fix spelling mistake "prepate" -> "prepare"
MAINTAINERS: Remove Dan Murphy's bouncing email
leds-lm3642: convert comma to semicolon
leds: rt4505: Add support for Richtek RT4505 flash LED controller
leds: rt4505: Add DT binding document for Richtek RT4505
leds: Kconfig: LEDS_CLASS is usually selected.
leds: lgm: Improve Kconfig help
leds: lgm: fix gpiolib dependency
When using devicetree, gpio_base holds its initial zero value which can
lead to a rejection if another gpio controller already occupies this
base. To prevent that collision let the gpio base be assigned dynamically.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Switch to using the new API kobj_to_dev() to fix the below warnning:
./drivers/leds/trigger/ledtrig-pattern.c:336:60-61: WARNING opportunity
for kobj_to_dev()
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The Intel Lightning Mountain (LGM) Serial Shift Output controller (SSO)
is only present on Intel Lightning Mountain SoCs. Hence add a
dependency on X86, to prevent asking the user about this driver when
configuring a kernel without Intel Lightning Mountain platform support.
While at it, merge the other dependencies into a single statement.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
There is a spelling mistake in a dev_err error message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Replace a comma between expression statements by a semicolon.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Change my e-mail address to kabel@kernel.org, and fix my name in
non-code parts (add diacritical mark).
Link: https://lkml.kernel.org/r/20210325171123.28093-2-kabel@kernel.org
Signed-off-by: Marek Behún <kabel@kernel.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jassi Brar <jassisinghbrar@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add support for RT4505 flash LED controller. It can support up to 1.5A
flash current with hardware timeout and low input voltage protection.
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Remove unnecessary Kconfig symbol LEDS_BLINK
Improve Kconfig help text to make it more useful.
Signed-off-by: Rahul Tanwar <rtanwar@maxlinear.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
led_set_brightness() involves scheduling a workqueue. As here the led's
brightness setting is done in context of the trigger's workqueue this is
unjustified overhead and it's more sensible to use
led_set_brightness_sync().
Fixes: fd4a641ac8 ("leds: trigger: implement a tty trigger")
Reported-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210219133307.4840-3-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ttyname is allocated before the mutex is taken, so it must not be
unlocked in the error path.
Fixes: fd4a641ac8 ("leds: trigger: implement a tty trigger")
Reported-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210219133307.4840-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Without gpiolib, the driver fails to build:
drivers/leds/blink/leds-lgm-sso.c:123:19: error: field has incomplete type 'struct gpio_chip'
struct gpio_chip chip;
^
include/linux/gpio.h:107:8: note: forward declaration of 'struct gpio_chip'
struct gpio_chip;
^
drivers/leds/blink/leds-lgm-sso.c:263:3: error: implicit declaration of function 'gpiod_set_value' [-Werror,-Wimplicit-function-declaration]
gpiod_set_value(led->gpiod, val);
^
drivers/leds/blink/leds-lgm-sso.c:263:3: note: did you mean 'gpio_set_value'?
include/linux/gpio.h:168:20: note: 'gpio_set_value' declared here
static inline void gpio_set_value(unsigned gpio, int value)
^
drivers/leds/blink/leds-lgm-sso.c:345:3: error: implicit declaration of function 'gpiod_set_value' [-Werror,-Wimplicit-function-declaration]
gpiod_set_value(led->gpiod, 1);
^
Add the dependency in Kconfig.
Fixes: c3987cd2bc ("leds: lgm: Add LED controller driver for LGM SoC")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
changing CLASS_FLASH to return success to make it easier to work with
V4L2 stuff disabled, and we are getting rid of enum that should have
been plain integer long time ago. I'm slightly nervous about potential
warnings, but it needed to be fixed at some point.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iEYEABECAAYFAmA2ETMACgkQMOfwapXb+vI0MQCgrQMf02DV2hvyJm2Oj4Vx6WKd
5VYAn0J/8OKSj4BHiW82s4H4tuP8e1TD
=GYC4
-----END PGP SIGNATURE-----
Merge tag 'leds-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds
Pull LED updates from Pavel Machek:
"Besides the usual fixes and new drivers, we are changing CLASS_FLASH
to return success to make it easier to work with V4L2 stuff disabled,
and we are getting rid of enum that should have been plain integer
long time ago. I'm slightly nervous about potential warnings, but it
needed to be fixed at some point"
* tag 'leds-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: lp50xx: Get rid of redundant explicit casting
leds: lp50xx: Update headers block to reflect reality
leds: lp50xx: Get rid of redundant check in lp50xx_enable_disable()
leds: lp50xx: Reduce level of dereferences
leds: lp50xx: Switch to new style i2c-driver probe function
leds: lp50xx: Don't spam logs when probe is deferred
leds: apu: extend support for PC Engines APU1 with newer firmware
leds: flash: Fix multicolor no-ops registration by return 0
leds: flash: Add flash registration with undefined CONFIG_LEDS_CLASS_FLASH
leds: lgm: Add LED controller driver for LGM SoC
dt-bindings: leds: Add bindings for Intel LGM SoC
leds: led-core: Get rid of enum led_brightness
leds: gpio: Set max brightness to 1
leds: lm3533: Switch to using the new API kobj_to_dev()
leds: ss4200: simplify the return expression of register_nasgpio_led()
leds: Use DEVICE_ATTR_{RW, RO, WO} macros
Here is the big set of tty/serial driver changes for 5.12-rc1.
Nothing huge, just lots of good cleanups and additions:
- Your n_tty line discipline cleanups
- vt core cleanups and reworks to make the code more "modern"
- stm32 driver additions
- tty led support added to the tty core and led layer
- minor serial driver fixups and additions
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYCqgqw8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ymJYQCgnxHmkhzJ2VarTDR3cWm1gu0NU7AAoNe5wWUh
4TQbhB9LSNo78HnIVze0
=Chcg
-----END PGP SIGNATURE-----
Merge tag 'tty-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver updates from Greg KH:
"Here is the big set of tty/serial driver changes for 5.12-rc1.
Nothing huge, just lots of good cleanups and additions:
- n_tty line discipline cleanups
- vt core cleanups and reworks to make the code more "modern"
- stm32 driver additions
- tty led support added to the tty core and led layer
- minor serial driver fixups and additions
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (54 commits)
serial: core: Remove BUG_ON(in_interrupt()) check
vt_ioctl: Remove in_interrupt() check
dt-bindings: serial: imx: Switch to my personal address
vt: keyboard, use new API for keyboard_tasklet
serial: stm32: improve platform_get_irq condition handling in init_port
serial: ifx6x60: Remove driver for deprecated platform
tty: fix up iterate_tty_read() EOVERFLOW handling
tty: fix up hung_up_tty_read() conversion
tty: fix up hung_up_tty_write() conversion
tty: teach the n_tty ICANON case about the new "cookie continuations" too
tty: teach n_tty line discipline about the new "cookie continuations"
tty: clean up legacy leftovers from n_tty line discipline
tty: implement read_iter
tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer
serial: remove sirf prima/atlas driver
serial: mxs-auart: Remove <asm/cacheflush.h>
serial: mxs-auart: Remove serial_mxs_probe_dt()
serial: fsl_lpuart: Use of_device_get_match_data()
dt-bindings: serial: renesas,hscif: Add r8a779a0 support
tty: serial: Drop unused efm32 serial driver
...
In the line like
u32 bar = ...;
u8 foo = (u8)(bar >> 8) & 0xff;
is no need to have neither explicit casting nor ' & 0xff' part.
Get rid of them.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The OF is not used in the driver, thus the OF headers are not needed,
but mod_devicetable.h is missed.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Since GPIO is optional the API is NULL aware and will check descriptor anyway.
Remove duplicate redundant check in lp50xx_enable_disable().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The priv->dev is effectively the same as &priv->client->dev.
So, drop the latter for the former.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Switch to the new style i2c-driver probe_new probe function.
Note we do not have any old style board files using this but
user still has a possibility to instantiate device from sysfs.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
When requesting GPIO line the probe can be deferred.
In such case don't spam logs with an error message.
This can be achieved by switching to dev_err_probe().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The DMI_PRODUCT_NAME entry on current firmware of PC Engines APU1 changed
from "APU" to "apu1"
This modification adds the missing DMI data and thereby the LED support for
the PC Engines APU1 with firmware versions >= 4.6.8.
Signed-off-by: Andreas Eberlein <foodeas@aeberlein.de>
Tested-by: Zbyněk Kocur <zbynek.kocur@fel.cvut.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Parallel to serial conversion, which is also called SSO controller,
can drive external shift register for LED outputs, reset or
general purpose outputs.
This driver enables LED support for Serial Shift Output Controller (SSO).
Signed-off-by: Amireddy Mallikarjuna reddy <mallikarjunax.reddy@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This gets rid of enum led_brightness in the main led files,
because it is deprecated, and an unsigned int can be used instead.
We can get rid of led_brightness completely and
patches can also be supplied for the other drivers' files.
Signed-off-by: Abanoub Sameh <abanoubsameh@protonmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The leds-rt8515 driver can optionall use the v4l2 flash led class,
but it causes a link error when that class is in a loadable module
and the rt8515 driver itself is built-in:
ld.lld: error: undefined symbol: v4l2_flash_init
>>> referenced by leds-rt8515.c
>>> leds/flash/leds-rt8515.o:(rt8515_probe) in archive
drivers/built-in.a
Adding 'depends on V4L2_FLASH_LED_CLASS' in Kconfig would avoid that,
but it would make it impossible to use the driver without the
v4l2 support.
Add the same dependency that the other users of this class have
instead, which just prevents the broken configuration.
Fixes: e1c6edcbea ("leds: rt8515: Add Richtek RT8515 LED driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
GPIO LEDs only know 2 states: ON or OFF and do not have PWM capabilities.
However, the max brightness is reported as 255.
This patch sets the max brightness value of a GPIO controlled LED to 1.
Tested on my PinePhone 1.2.
Signed-off-by: Dylan Van Assche <me@dylanvanassche.be>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
fixed the following coccicheck:
drivers/leds/leds-lm3533.c:611:60-61: WARNING opportunity for kobj_to_dev().
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This adds a driver for the Richtek RT8515 dual channel
torch/flash white LED driver.
This LED driver is found in some mobile phones from
Samsung such as the GT-S7710 and GT-I8190.
A V4L interface is added.
We do not have a proper datasheet for the RT8515 but
it turns out that RT9387A has a public datasheet and
is essentially the same chip. We designed the driver
in accordance with this datasheet. The day someone
needs to drive a RT9387A this driver can probably
easily be augmented to handle that chip too.
Sakari Ailus, Pavel Machek and Andy Shevchenko helped
significantly in getting this driver right.
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: newbytee@protonmail.com
Cc: Stephan Gerhold <stephan@gerhold.net>
Cc: linux-media@vger.kernel.org
Cc: phone-devel@vger.kernel.org
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
We have the following potential deadlock condition:
========================================================
WARNING: possible irq lock inversion dependency detected
5.10.0-rc2+ #25 Not tainted
--------------------------------------------------------
swapper/3/0 just changed the state of lock:
ffff8880063bd618 (&host->lock){-...}-{2:2}, at: ata_bmdma_interrupt+0x27/0x200
but this lock took another, HARDIRQ-READ-unsafe lock in the past:
(&trig->leddev_list_lock){.+.?}-{2:2}
and interrupts could create inverse lock ordering between them.
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&trig->leddev_list_lock);
local_irq_disable();
lock(&host->lock);
lock(&trig->leddev_list_lock);
<Interrupt>
lock(&host->lock);
*** DEADLOCK ***
no locks held by swapper/3/0.
the shortest dependencies between 2nd lock and 1st lock:
-> (&trig->leddev_list_lock){.+.?}-{2:2} ops: 46 {
HARDIRQ-ON-R at:
lock_acquire+0x15f/0x420
_raw_read_lock+0x42/0x90
led_trigger_event+0x2b/0x70
rfkill_global_led_trigger_worker+0x94/0xb0
process_one_work+0x240/0x560
worker_thread+0x58/0x3d0
kthread+0x151/0x170
ret_from_fork+0x1f/0x30
IN-SOFTIRQ-R at:
lock_acquire+0x15f/0x420
_raw_read_lock+0x42/0x90
led_trigger_event+0x2b/0x70
kbd_bh+0x9e/0xc0
tasklet_action_common.constprop.0+0xe9/0x100
tasklet_action+0x22/0x30
__do_softirq+0xcc/0x46d
run_ksoftirqd+0x3f/0x70
smpboot_thread_fn+0x116/0x1f0
kthread+0x151/0x170
ret_from_fork+0x1f/0x30
SOFTIRQ-ON-R at:
lock_acquire+0x15f/0x420
_raw_read_lock+0x42/0x90
led_trigger_event+0x2b/0x70
rfkill_global_led_trigger_worker+0x94/0xb0
process_one_work+0x240/0x560
worker_thread+0x58/0x3d0
kthread+0x151/0x170
ret_from_fork+0x1f/0x30
INITIAL READ USE at:
lock_acquire+0x15f/0x420
_raw_read_lock+0x42/0x90
led_trigger_event+0x2b/0x70
rfkill_global_led_trigger_worker+0x94/0xb0
process_one_work+0x240/0x560
worker_thread+0x58/0x3d0
kthread+0x151/0x170
ret_from_fork+0x1f/0x30
}
... key at: [<ffffffff83da4c00>] __key.0+0x0/0x10
... acquired at:
_raw_read_lock+0x42/0x90
led_trigger_blink_oneshot+0x3b/0x90
ledtrig_disk_activity+0x3c/0xa0
ata_qc_complete+0x26/0x450
ata_do_link_abort+0xa3/0xe0
ata_port_freeze+0x2e/0x40
ata_hsm_qc_complete+0x94/0xa0
ata_sff_hsm_move+0x177/0x7a0
ata_sff_pio_task+0xc7/0x1b0
process_one_work+0x240/0x560
worker_thread+0x58/0x3d0
kthread+0x151/0x170
ret_from_fork+0x1f/0x30
-> (&host->lock){-...}-{2:2} ops: 69 {
IN-HARDIRQ-W at:
lock_acquire+0x15f/0x420
_raw_spin_lock_irqsave+0x52/0xa0
ata_bmdma_interrupt+0x27/0x200
__handle_irq_event_percpu+0xd5/0x2b0
handle_irq_event+0x57/0xb0
handle_edge_irq+0x8c/0x230
asm_call_irq_on_stack+0xf/0x20
common_interrupt+0x100/0x1c0
asm_common_interrupt+0x1e/0x40
native_safe_halt+0xe/0x10
arch_cpu_idle+0x15/0x20
default_idle_call+0x59/0x1c0
do_idle+0x22c/0x2c0
cpu_startup_entry+0x20/0x30
start_secondary+0x11d/0x150
secondary_startup_64_no_verify+0xa6/0xab
INITIAL USE at:
lock_acquire+0x15f/0x420
_raw_spin_lock_irqsave+0x52/0xa0
ata_dev_init+0x54/0xe0
ata_link_init+0x8b/0xd0
ata_port_alloc+0x1f1/0x210
ata_host_alloc+0xf1/0x130
ata_host_alloc_pinfo+0x14/0xb0
ata_pci_sff_prepare_host+0x41/0xa0
ata_pci_bmdma_prepare_host+0x14/0x30
piix_init_one+0x21f/0x600
local_pci_probe+0x48/0x80
pci_device_probe+0x105/0x1c0
really_probe+0x221/0x490
driver_probe_device+0xe9/0x160
device_driver_attach+0xb2/0xc0
__driver_attach+0x91/0x150
bus_for_each_dev+0x81/0xc0
driver_attach+0x1e/0x20
bus_add_driver+0x138/0x1f0
driver_register+0x91/0xf0
__pci_register_driver+0x73/0x80
piix_init+0x1e/0x2e
do_one_initcall+0x5f/0x2d0
kernel_init_freeable+0x26f/0x2cf
kernel_init+0xe/0x113
ret_from_fork+0x1f/0x30
}
... key at: [<ffffffff83d9fdc0>] __key.6+0x0/0x10
... acquired at:
__lock_acquire+0x9da/0x2370
lock_acquire+0x15f/0x420
_raw_spin_lock_irqsave+0x52/0xa0
ata_bmdma_interrupt+0x27/0x200
__handle_irq_event_percpu+0xd5/0x2b0
handle_irq_event+0x57/0xb0
handle_edge_irq+0x8c/0x230
asm_call_irq_on_stack+0xf/0x20
common_interrupt+0x100/0x1c0
asm_common_interrupt+0x1e/0x40
native_safe_halt+0xe/0x10
arch_cpu_idle+0x15/0x20
default_idle_call+0x59/0x1c0
do_idle+0x22c/0x2c0
cpu_startup_entry+0x20/0x30
start_secondary+0x11d/0x150
secondary_startup_64_no_verify+0xa6/0xab
This lockdep splat is reported after:
commit e918188611 ("locking: More accurate annotations for read_lock()")
To clarify:
- read-locks are recursive only in interrupt context (when
in_interrupt() returns true)
- after acquiring host->lock in CPU1, another cpu (i.e. CPU2) may call
write_lock(&trig->leddev_list_lock) that would be blocked by CPU0
that holds trig->leddev_list_lock in read-mode
- when CPU1 (ata_ac_complete()) tries to read-lock
trig->leddev_list_lock, it would be blocked by the write-lock waiter
on CPU2 (because we are not in interrupt context, so the read-lock is
not recursive)
- at this point if an interrupt happens on CPU0 and
ata_bmdma_interrupt() is executed it will try to acquire host->lock,
that is held by CPU1, that is currently blocked by CPU2, so:
* CPU0 blocked by CPU1
* CPU1 blocked by CPU2
* CPU2 blocked by CPU0
*** DEADLOCK ***
The deadlock scenario is better represented by the following schema
(thanks to Boqun Feng <boqun.feng@gmail.com> for the schema and the
detailed explanation of the deadlock condition):
CPU 0: CPU 1: CPU 2:
----- ----- -----
led_trigger_event():
read_lock(&trig->leddev_list_lock);
<workqueue>
ata_hsm_qc_complete():
spin_lock_irqsave(&host->lock);
write_lock(&trig->leddev_list_lock);
ata_port_freeze():
ata_do_link_abort():
ata_qc_complete():
ledtrig_disk_activity():
led_trigger_blink_oneshot():
read_lock(&trig->leddev_list_lock);
// ^ not in in_interrupt() context, so could get blocked by CPU 2
<interrupt>
ata_bmdma_interrupt():
spin_lock_irqsave(&host->lock);
Fix by using read_lock_irqsave/irqrestore() in led_trigger_event(), so
that no interrupt can happen in between, preventing the deadlock
condition.
Apply the same change to led_trigger_blink_setup() as well, since the
same deadlock scenario can also happen in power_supply_update_bat_leds()
-> led_trigger_blink() -> led_trigger_blink_setup() (workqueue context),
and potentially prevent other similar usages.
Link: https://lore.kernel.org/lkml/20201101092614.GB3989@xps-13-7390/
Fixes: eb25cb9956 ("leds: convert IDE trigger to common disk trigger")
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Replace a comma between expression statements by a semicolon.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Reviewed-by: Alexander Dahl <ada@thorsis.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Replace a comma between expression statements by a semicolon.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Usage is as follows:
myled=ledname
tty=ttyS0
echo tty > /sys/class/leds/$myled/trigger
echo $tty > /sys/class/leds/$myled/ttyname
. When this new trigger is active it periodically checks the tty's
statistics and when it changed since the last check the led is flashed
once.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210113173018.bq2fkea2o3yp6rf6@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Instead of open coding DEVICE_ATTR() defines, use the
DEVICE_ATTR_RW(), DEVICE_ATTR_WO(), and DEVICE_ATTR_RO()
macros.
This required a few functions to be renamed, but the functionality
itself is unchanged.
Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
LED core does not allow LED_COLOR_ID_MULTI for now and instead for RGB
LEDs prefers LED_COLOR_ID_RGB.
Signed-off-by: Marek Behún <kabel@kernel.org>
Fixes: 77dce3a22e ("leds: disallow /sys/class/leds/*:multi:* for now")
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Although checkpatch changed the max-line-length default to 100 columns,
we still prefer 80 columns somewhere.
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Use integer constants directly when building I2C messages for LED color
change command, instead of macros. The command is simple enough to
understand what is going on even without these names.
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
In case of memory allocation failure, we must release some resources as
done in all other error handling paths of the function.
'goto child_out' instead of a direct return so that 'fwnode_handle_put()'
is called when we break out of a 'device_for_each_child_node' loop.
Fixes: 242b81170f ("leds: lp50xx: Add the LP50XX family of the RGB LED driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
if of_find_device_by_node() succeed, netxbig_leds_get_of_pdata() doesn't
have a corresponding put_device(). Thus add jump target to fix the
exception handling for this function implementation.
Fixes: 2976b17989 ("leds: netxbig: add device tree binding")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Since commit 141f15c66d ("leds: pwm: remove header") that platform
interface is not usable from outside and there seems to be no in tree
user anymore. All in-tree users of the leds-pwm driver seem to use DT
currently. Getting rid of the old platform interface allows the
leds-pwm driver to switch over from 'devm_led_classdev_register()' to
'devm_led_classdev_register_ext()'.
Signed-off-by: Alexander Dahl <post@lespocky.de>
Cc: Denis Osterland-Heim <denis.osterland@diehl.com>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
If both LED banks aren't used in device tree, an out-of-bounds
condition in lm3697_init occurs because of the for loop assuming that
all the banks are used. Fix it by adding a variable that contains the
number of used banks.
Signed-off-by: Gabriel David <ultracoolguy@tutanota.com>
[removed extra rename, minor tweaks]
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Cc: stable@kernel.org
Do not match OF match pointer with of_match_ptr, so that even if
CONFIG_OF is disabled, the driver can still be bound via another method.
Move definition of of_ns2_leds_match just before ns2_led_driver
definition, since it is not needed sooner.
Signed-off-by: Marek Behún <kabel@kernel.org>
Tested-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Convert from OF api to fwnode API, so that it is possible to bind this
driver without device-tree.
The fwnode API does not expose a function to read a specific element of
an array. We therefore change the types of the ns2_led_modval structure
so that we can read the whole modval array with one fwnode call.
Signed-off-by: Marek Behún <kabel@kernel.org>
Tested-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
In one of the error paths of the for_each_child_of_node loop in
tlc591xx_probe, add missing call to of_node_put.
Fixes: 1ab4531ad1 ("leds: tlc591xx: simplify driver by using the managed led API")
Signed-off-by: Tobias Jordan <kernel@cdqe.de>
Reviewed-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using struct led_init_data when registering we do not need to parse
`label` DT property. Moreover `label` is deprecated and if it is not
present but `color` and `function` are, LED core will compose a name
from these properties instead.
Previously if the `label` DT property was not present, the code composed
name for the LED in the form
"pca963x:%d:%.2x:%u"
For backwards compatibility we therefore set init_data->default_label
to this value so that the LED will not get a different name if `label`
property is not present, nor are `color` and `function`.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Peter Meerwald <p.meerwald@bct-electronic.com>
Cc: Ricardo Ribalda <ribalda@kernel.org>
Cc: Zahari Petkov <zahari@balena.io>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Register LEDs immediately after parsing their properties.
This allows us to get rid of platdata, and since no one in tree uses
header linux/platform_data/leds-pca963x.h, remove it.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Peter Meerwald <p.meerwald@bct-electronic.com>
Cc: Ricardo Ribalda <ribalda@kernel.org>
Cc: Zahari Petkov <zahari@balena.io>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Remove the binding comment at the beginning. The information for
platdata is now obsolete and DT binding is documented in device-tree
bindings.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: NeilBrown <neilb@suse.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Use helper variable dev instead of always writing &client->dev.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: NeilBrown <neilb@suse.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Do not set GPIO names. Let gpiolib determine GPIO names from the DT
property `gpio-line-names`.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: NeilBrown <neilb@suse.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Some machines have thousands of CPUs... and trigger mechanisms was not
really meant for thousands of triggers. I doubt anyone uses this
trigger on many-CPU machine; but if they do, they'll need to do it
properly.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
While the two pca9532 pwms can be configured in the platform data
struct, there was no corresponding dt binding. Users need to configure
the pwm if some leds should blink or continue blinking during boot.
Signed-off-by: Markus Moll <mmoll@de.pepperl-fuchs.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Each led setting occupies two bits in a corresponding led register.
Accessing these bits requires shifting and masking, which was
implemented incorrectly in pca9532_getled. Two new helper macros
concentrate the computation of those masks in one place.
Signed-off-by: Markus Moll <mmoll@de.pepperl-fuchs.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fix warnings for undefined parameters when building with W=1.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fix warnings for undefined parameters when W=1 is used.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Instead of doing two allocations, allocate only once, by utilizing
flexible array members.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Peter Meerwald <p.meerwald@bct-electronic.com>
Cc: Ricardo Ribalda <ribalda@kernel.org>
Cc: Zahari Petkov <zahari@balena.io>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Rename variable of type struct pca963x_led from pca963x to simple led.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Peter Meerwald <p.meerwald@bct-electronic.com>
Cc: Ricardo Ribalda <ribalda@kernel.org>
Cc: Zahari Petkov <zahari@balena.io>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Rename variables chip and pca963x_chip to chipdef and chip,
respectively, so that their names correspond to the names of their
types.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Peter Meerwald <p.meerwald@bct-electronic.com>
Cc: Ricardo Ribalda <ribalda@kernel.org>
Cc: Zahari Petkov <zahari@balena.io>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using devres version of LED registering function we can remove the
.remove method from this driver. The probe method also gets simpler.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Peter Meerwald <p.meerwald@bct-electronic.com>
Cc: Ricardo Ribalda <ribalda@kernel.org>
Cc: Zahari Petkov <zahari@balena.io>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Use helper variables: instead of writing &client->dev at many places,
write only dev. The same with pca963x->chip->chipdef,
pca963x->chip->client).
Use helper variable u8 val for i2c_smbus_write_byte_data, for better
indentation.
Indent better on various places.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Peter Meerwald <p.meerwald@bct-electronic.com>
Cc: Ricardo Ribalda <ribalda@kernel.org>
Cc: Zahari Petkov <zahari@balena.io>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Fix potential ERR_PTR(0).
Signed-off-by: Marek Behún <kabel@kernel.org>
Fixes: d78b10f5713d9 ("leds: tca6507: use fwnode API instead of OF")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Convert to use fwnode API instead of OF. It is more generic and if
someone wants to use this driver without device-tree yet still, they
will be able to via swnode fwnodes.
Remove the gpio setup function from platdata.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: NeilBrown <neilb@suse.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Tested-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The only in-tree usage of this driver is via device-tree. No on else
includes linux/leds-tca6507.h, so absorb the definition of platdata
structure.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: NeilBrown <neilb@suse.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Do the parsing of `linux,default-trigger` DT property to LED core.
Currently it is done in many different drivers and the code is repeated.
This patch removes the parsing from 23 drivers:
an30259a, aw2013, bcm6328, bcm6358, cr0014114, el15203000, gpio,
is31fl32xx, lm3532, lm36274, lm3692x, lm3697, lp50xx, lp8860, lt3593,
max77650, mt6323, ns2, pm8058, pwm, syscon, tlc591xx and turris-omnia.
There is one driver in drivers/input which parses this property on it's
own. I shall send a separate patch there after this is applied.
There are still 8 drivers that parse this property on their own because
they do not pass the led_init_data structure to the registering
function. I will try to refactor those in the future.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using struct led_init_data when registering we do not need to parse
`label` DT property. Moreover `label` is deprecated and if it is not
present but `color` and `function` are, LED core will compose a name
from these properties instead.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This driver uses extended LED registration, so we do not need to parse
the `label` DT property on our own.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Now that the potential use-after-free issue is resolved we can use
devres for LED registration in this driver.
By using devres version of LED registering function we can remove the
.remove method from this driver.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Tested-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Instead of registering LED under the MFD device, this driver sets the
parent of the LED it is registering to the parent of the MFD device (the
I2C client device).
Because of this we cannot use devres for LED registration, since it can
result in use-after-free, see commit
a0972fff09 ("leds: lm36274: fix use-after-free on unbind").
The only other in-tree driver that also registers under the MFD device
(drivers/regulator/lm363x-regulator.c) sets the parent to the MFD
device.
Set the parent of this LED to the MFD device, instead of the I2C client
device.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Tested-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
These settings are not parsed from DT and therefore semantically should
not be set in function with a name lm36274_parse_dt.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Tested-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using struct led_init_data when registering we do not need to parse
`label` DT property. Moreover `label` is deprecated and if it is not
present but `color` and `function` are, LED core will compose a name
from these properties instead.
Previously if the `label` DT property was not present, the code composed
name for the LED in the form
"parent_name::"
For backwards compatibility we therefore set
init_data->default_label = ":";
so that the LED will not get a different name if `label` property is not
present, nor are `color` and `function`.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Tested-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Do not use device_for_each_child_node. Since this driver works only with
once child node present, use device_get_next_child_node instead.
This also saves one level of indentation.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Rename this variable so that it is easier to read and easier to write in
80 columns. Also rename variable of this type in lm36274_brightness_set
from led to chip, to be consistent.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Tested-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Acer Iconia Tab A500 is an Android tablet device which has two LEDs
embedded into the Power Button. Orange LED indicates "battery charging"
status and white LED indicates "wake-up/charge-done" status. The new LED
driver provides control over both LEDs to userspace.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using struct led_init_data when registering we do not need to parse
`label` DT property. Moreover `label` is deprecated and if it is not
present but `color` and `function` are, LED core will compose a name
from these properties instead.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
No need to use variable found, we can determine whether the mode was
found by comparing iterator variable to its limit.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Register each LED immediately after parsing OF properties. This
simplifies the driver.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Use helper variable dev instead of always writing &pdev->dev.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Return directly instead of setting result and breaking.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Rename variable led_dat to led in various functions.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This drivers leaks GPIO descriptors on driver removal. Use devres API
function devm_gpiod_get_from_of_node instead of gpiod_get_from_of_node
to avoid this.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Not-for-stable
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Move parsing of DT properties of one LED into separate function. This
saves indentation level and is nicer to read.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Move forward from platform data to device tree only.
Since commit c7896490dd ("leds: ns2: Absorb platform data") the
platform data structure is absorbed into the driver, because nothing
else in the source tree uses it. Since nobody complained and all usage
of this driver is via device tree, change the code to work with device
tree only. As Linus Walleij wrote, the device tree should be the
preferred way forward anyway.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Since .remove method is not needed now that we use devres, there is no
need to remember the number of LEDs in struct ns2_led_priv. Alloc simple
array of ns2_led_data structs.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using devres version of LED registering function we can remove the
.remove method from this driver. The probe method also gets simpler.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using struct led_init_data when registering we do not need to parse
`label` DT property. Moreover `label` is deprecated and if it is not
present but `color` and `function` are, LED core will compose a name
from these properties instead.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Cc: David Rivshin <drivshin@allworx.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
We can return the last ret value.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Use helper variable dev instead of always writing &pdev->dev.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using struct led_init_data when registering we do not need to parse
`label` DT property. Moreover `label` is deprecated and if it is not
present but `color` and `function` are, LED core will compose a name
from these properties instead.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Use helper variable dev instead of always writing &pdev->dev.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: John Crispin <john@phrozen.org>
Cc: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using struct led_init_data when registering we do not need to parse
`label` DT property. Moreover `label` is deprecated and if it is not
present but `color` and `function` are, LED core will compose a name
from these properties instead.
Since init_data is passed with fwnode handle, we do not need to set
the of_node member of the newly created LED classdev.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: John Crispin <john@phrozen.org>
Cc: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using struct led_init_data when registering we do not need to parse
`label` DT property. Moreover `label` is deprecated and if it is not
present but `color` and `function` are, LED core will compose a name
from these properties instead.
Previously if the `label` DT property was not present, the code composed
name for the LED in the form
"max77650::"
For backwards compatibility we therefore set
init_data->default_label = ":";
so that the LED will not get a different name if `label` property is not
present.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Use helper variable dev instead of always writing &client->dev, or
&priv->client->dev, or even &led->priv->client->dev.
With one more line moved reverse christmas tree is also achieved.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using struct led_init_data when registering we do not need to parse
`label` DT property. Moreover `label` is deprecated and if it is not
present but `color` and `function` are, LED core will compose a name
from these properties instead.
Previously if the `label` DT property was not present, the code composed
name for the LED in the form
"parent_name::"
For backwards compatibility we therefore set
init_data->default_label = ":";
so that the LED will not get a different name if `label` property is not
present.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
By using struct led_init_data when registering we do not need to parse
`label` DT property. Moreover `label` is deprecated and if it is not
present but `color` and `function` are, LED core will compose a name
from these properties instead.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Álvaro Fernández Rojas <noltari@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Jaedon Shin <jaedon.shin@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
These two drivers do not provide remove method and use devres for
allocation of other resources, yet they use led_classdev_register
instead of the devres variant, devm_led_classdev_register.
Fix this.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Álvaro Fernández Rojas <noltari@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Jaedon Shin <jaedon.shin@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Cc: stable@kernel.org
Fix OF node leaks by calling of_node_put in
for_each_available_child_of_node when the cycle breaks or returns.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Nikita Travkin <nikitos.tr@gmail.com>
Cc: Milo Kim <milo.kim@ti.com>
Cc: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Not-for-stable: untested, theoretical, insignificant leaks
Various drivers count and iterate over OF children nodes via
of_get_child_count and for_each_child_of_node. Instead they should use
of_get_available_child_count and for_each_available_child_of_node, so
that if a given node has the `status` property set to `disabled`, the
child will be ignored.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Andrey Utkin <andrey_utkin@fastmail.com>
Cc: Baolin Wang <baolin.wang7@gmail.com>
Cc: Baolin Wang <baolin.wang@linaro.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Christian Mauderer <oss@c-mauderer.de>
Cc: Chunyan Zhang <zhang.lyra@gmail.com>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: David Rivshin <drivshin@allworx.com>
Cc: Haojian Zhuang <haojian.zhuang@marvell.com>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Milo Kim <milo.kim@ti.com>
Cc: NeilBrown <neilb@suse.de>
Cc: Nikita Travkin <nikitos.tr@gmail.com>
Cc: Orson Zhai <orsonzhai@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Philippe Retornaz <philippe.retornaz@epfl.ch>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Simon Guinot <sguinot@lacie.com>
Cc: Simon Shields <simon@lineageos.org>
Cc: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Cc: Xiaotong Lu <xiaotong.lu@spreadtrum.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The devm_led_classdev_register_ext is given init_data with fwnode set,
so the LED core sets .of_node of the new LED classdev correctly.
Do not rewrite this value to parent of_node.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The dev_of_node function should be preferred.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Orson Zhai <orsonzhai@gmail.com>
Cc: Baolin Wang <baolin.wang7@gmail.com>
Cc: Chunyan Zhang <zhang.lyra@gmail.com>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Simply use device_get_match_data instead of matching against the match
table again.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Cc: David Rivshin <drivshin@allworx.com>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Christian Mauderer <oss@c-mauderer.de>
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This driver can be compiled on other platforms with small change if
COMPILE_TEST=y.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
These drivers can be compiled without modification when COMPILE_TEST=y:
cobalt-qube, cobalt-raq, netxbig, ns2 and s3c24xx
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
If LEDs are configured through device tree and the property 'label' is
omitted, the label is supposed to be generated from the properties
'function' and 'color' if present. While this works fine for e.g. the
'leds-gpio' driver, it did not for 'leds-pwm'.
The reason is, you get this label naming magic only if you add a LED
device through 'devm_led_classdev_register_ext()' and pass a pointer to
the current device tree node.
For the following node from dts the LED appeared as 'led-5' in sysfs
before and as 'red:debug' after this change.
pwm_leds {
compatible = "pwm-leds";
led-5 {
function = LED_FUNCTION_DEBUG;
color = <LED_COLOR_ID_RED>;
pwms = <&pwm0 2 10000000 0>;
max-brightness = <127>;
linux,default-trigger = "heartbeat";
panic-indicator;
};
};
Signed-off-by: Alexander Dahl <post@lespocky.de>
Cc: Marek Behún <marek.behun@nic.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Common pattern of handling deferred probe can be simplified with
dev_err_probe(). Less code and also it prints the error value.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Common pattern of handling deferred probe can be simplified with
dev_err_probe(). Less code and also it prints the error value.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Common pattern of handling deferred probe can be simplified with
dev_err_probe(). Less code and also it prints the error value.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Common pattern of handling deferred probe can be simplified with
dev_err_probe(). Less code and also it prints the error value.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
generate a 5ms low pulse on shutdown pin when startup, then the chip
becomes more stable in the complex EM environment.
Signed-off-by: Grant Feng <von81@163.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Introduce the LP5036/30/24/18/12/9 RGB LED driver.
The difference in these parts are the number of
LED outputs where the:
LP5036 can control 36 LEDs
LP5030 can control 30 LEDs
LP5024 can control 24 LEDs
LP5018 can control 18 LEDs
LP5012 can control 12 LEDs
LP5009 can control 9 LEDs
The device has the ability to group LED outputs into control banks
so that multiple LED banks can be controlled with the same mixing and
brightness. Or the LED outputs can also be controlled independently.
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
With these kernel configs:
CONFIG_LEDS_CLASS=m
# CONFIG_LEDS_CLASS_MULTICOLOR is not set
CONFIG_LEDS_LP55XX_COMMON=y
CONFIG_LEDS_LP5521=m
CONFIG_LEDS_LP5562=m
leds-lp55xx-common.c has a build error because it is builtin and
calls an interface that is built as a loadable module (due to
LEDS_CLASS=m). By making LEDS_LP55XX_COMMON depend on LEDS_CLASS,
this config combination cannot happen, thus preventing the build error.
ld: drivers/leds/leds-lp55xx-common.o: in function `lp55xx_register_leds':
leds-lp55xx-common.c:(.text+0xc5f): undefined reference to `devm_led_classdev_register_ext'
Fixes: 33b3a561f4 ("leds: support new LP8501 device - another LP55xx common")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Milo Kim <milo.kim@ti.com>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Pavel Machek <pavel@ucw.cz>
IBM created an implementation of the PCA9552 on a PIC16F
microcontroller. The I2C device addresses are different from the
hardware PCA9552, so add a new compatible string and associated
platform data to be able to probe this device.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
clang static analysis reports this problem
leds-mt6323.c:275:12: warning: Division by zero
duty_hw = MT6323_CAL_HW_DUTY(*delay_on, period);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This is because period can be 0.
period = *delay_on + *delay_off;
There is a later check that *delay_on/off are valid.
if (!*delay_on && !*delay_off) {
*delay_on = 500;
*delay_off = 500;
}
Setting the delay_on/off means period needs to be recalculated
anyway. So move the period statements after this check.
Fixes: 216ec6cc4c ("leds: Add LED support for MT6323 PMIC")
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
The driver includes machine header for GPIO registers but actually does
not use them.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Okay, so... this one is interesting. RGB LEDs are very common, and we
need to have some kind of support for them. Multicolor is for
arbitrary set of LEDs in one package, RGB is for LEDs that can produce
full range of colors. We do not have real multicolor LED that is not
RGB in the pipeline, so that one is disabled for now.
You can expect this saga to continue with next pull requests.
-----BEGIN PGP SIGNATURE-----
iF0EABECAB0WIQRPfPO7r0eAhk010v0w5/Bqldv68gUCXyskqQAKCRAw5/Bqldv6
8ge0AJ9JRTa/0Xkl7JuKUpC93jAnvjpK+ACgsDijb77H5zmtwC8xa0kXiDsbh3E=
=aSJX
-----END PGP SIGNATURE-----
Merge tag 'leds-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds
Pull LED updates from Pavel Machek:
"Okay, so... this one is interesting. RGB LEDs are very common, and we
need to have some kind of support for them. Multicolor is for
arbitrary set of LEDs in one package, RGB is for LEDs that can produce
full range of colors. We do not have real multicolor LED that is not
RGB in the pipeline, so that one is disabled for now.
You can expect this saga to continue with next pull requests"
* tag 'leds-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: (37 commits)
MAINTAINERS: Remove myself as LED subsystem maintainer
leds: disallow /sys/class/leds/*:multi:* for now
leds: add RGB color option, as that is different from multicolor.
Make LEDS_LP55XX_COMMON depend on I2C to fix build errors:
Documentation: ABI: leds-turris-omnia: document sysfs attribute
leds: initial support for Turris Omnia LEDs
dt-bindings: leds: add cznic,turris-omnia-leds binding
leds: pattern trigger -- check pattern for validity
leds: Replace HTTP links with HTTPS ones
leds: trigger: add support for LED-private device triggers
leds: lp5521: Add multicolor framework multicolor brightness support
leds: lp5523: Update the lp5523 code to add multicolor brightness function
leds: lp55xx: Add multicolor framework support to lp55xx
leds: lp55xx: Convert LED class registration to devm_*
dt-bindings: leds: Convert leds-lp55xx to yaml
leds: multicolor: Introduce a multicolor class definition
leds: Add multicolor ID to the color ID list
dt: bindings: Add multicolor class dt bindings documention
leds: lp5523: Fix various formatting issues in the code
leds: lp55xx: Fix file permissions to use DEVICE_ATTR macros
...
All the LEDs in the queue are RGB, so they should not use multi for
their color.
Make sure we don't add such LED by mistake (and make it part of ABI).
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Multicolor is a bit too abstract. Yes, we can have
Green-Magenta-Ultraviolet LED, but so far all the LEDs we support are
RGB, and not even RGB-White or RGB-Yellow variants emerged.
Multicolor is not a good fit for RGB LED. It does not really know
about LED color. In particular, there's no way to make LED "white".
Userspace is interested in knowing "this LED can produce arbitrary
color", which not all multicolor LEDs can.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
leds-lp55xx-common.c:(.text+0x9d): undefined reference to `i2c_smbus_read_byte_data'
leds-lp55xx-common.c:(.text+0x8fc): undefined reference to `i2c_smbus_write_byte_data'
These errors happened when I2C=m and LEDS_LP55XX_COMMON=y, so
prevent that from being possible.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: linux-leds@vger.kernel.org
Cc: Milo Kim <milo.kim@ti.com>
Cc: Mathias Nyman <mathias.nyman@nokia.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This adds basic support for LEDs on the front side of CZ.NIC's Turris
Omnia router.
There are 12 RGB LEDs. The controller supports HW triggering mode for
the LEDs, but this driver does not support it yet, and sets all the LEDs
defined in device-tree into SW mode upon probe.
This driver uses the multicolor LED framework.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Andy Shevchenko