1605 Commits

Author SHA1 Message Date
Ondrej Jirman
f28b72162f leds: sgm3140: Add missing timer cleanup and flash gpio control
[ Upstream commit 205c29887a333ee4b37596e6533373e38cb23947 ]

Enabling strobe and then setting brightness to 0 causes the driver to enter
invalid state after strobe end timer fires. We should cancel strobe mode
resources when changing brightness (aka torch mode).

Fixes: cef8ec8cbd21 ("leds: add sgm3140 driver")
Signed-off-by: Ondrej Jirman <megi@xff.cz>
Link: https://lore.kernel.org/r/20240217191133.1757553-1-megi@xff.cz
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-03-26 18:21:31 -04:00
George Stark
663dea0305 leds: aw2013: Unlock mutex before destroying it
[ Upstream commit 6969d0a2ba1adc9ba6a49b9805f24080896c255c ]

In the probe() callback in case of error mutex is destroyed being locked
which is not allowed so unlock the mutex before destroying.

Fixes: 59ea3c9faf32 ("leds: add aw2013 driver")
Signed-off-by: George Stark <gnstark@salutedevices.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231214173614.2820929-2-gnstark@salutedevices.com
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-03-26 18:21:31 -04:00
Heiner Kallweit
f5010e2892 leds: trigger: panic: Don't register panic notifier if creating the trigger failed
[ Upstream commit afacb21834bb02785ddb0c3ec197208803b74faa ]

It doesn't make sense to register the panic notifier if creating the
panic trigger failed.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/8a61e229-5388-46c7-919a-4d18cc7362b2@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-02-23 08:54:49 +01:00
Dang Huynh
6109ff5ad5 leds: aw2013: Select missing dependency REGMAP_I2C
[ Upstream commit 75469bb0537ad2ab0fc1fb6e534a79cfc03f3b3f ]

The AW2013 driver uses devm_regmap_init_i2c, so REGMAP_I2C needs to
be selected.

Otherwise build process may fail with:
  ld: drivers/leds/leds-aw2013.o: in function `aw2013_probe':
    leds-aw2013.c:345: undefined reference to `__devm_regmap_init_i2c'

Signed-off-by: Dang Huynh <danct12@riseup.net>
Acked-by: Nikita Travkin <nikita@trvn.ru>
Fixes: 59ea3c9faf32 ("leds: add aw2013 driver")
Link: https://lore.kernel.org/r/20231103114203.1108922-1-danct12@riseup.net
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-25 14:52:50 -08:00
Florian Eckert
e62243b353 leds: ledtrig-tty: Free allocated ttyname buffer on deactivate
commit 25054b232681c286fca9c678854f56494d1352cc upstream.

The ttyname buffer for the ledtrig_tty_data struct is allocated in the
sysfs ttyname_store() function. This buffer must be released on trigger
deactivation. This was missing and is thus a memory leak.

While we are at it, the TTY handler in the ledtrig_tty_data struct should
also be returned in case of the trigger deactivation call.

Cc: stable@vger.kernel.org
Fixes: fd4a641ac88f ("leds: trigger: implement a tty trigger")
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20231127081621.774866-1-fe@dev.tdt.de
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-01-25 14:52:32 -08:00
Christophe JAILLET
ca0aae3837 leds: trigger: ledtrig-cpu:: Fix 'output may be truncated' issue for 'cpu'
[ Upstream commit ff50f53276131a3059e8307d11293af388ed2bcd ]

In order to teach the compiler that 'trig->name' will never be truncated,
we need to tell it that 'cpu' is not negative.

When building with W=1, this fixes the following warnings:

  drivers/leds/trigger/ledtrig-cpu.c: In function ‘ledtrig_cpu_init’:
  drivers/leds/trigger/ledtrig-cpu.c:155:56: error: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size 5 [-Werror=format-truncation=]
    155 |                 snprintf(trig->name, MAX_NAME_LEN, "cpu%d", cpu);
        |                                                        ^~
  drivers/leds/trigger/ledtrig-cpu.c:155:52: note: directive argument in the range [-2147483648, 7]
    155 |                 snprintf(trig->name, MAX_NAME_LEN, "cpu%d", cpu);
        |                                                    ^~~~~~~
  drivers/leds/trigger/ledtrig-cpu.c:155:17: note: ‘snprintf’ output between 5 and 15 bytes into a destination of size 8
    155 |                 snprintf(trig->name, MAX_NAME_LEN, "cpu%d", cpu);
        |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: 8f88731d052d ("led-triggers: create a trigger for CPU activity")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/3f4be7a99933cf8566e630da54f6ab913caac432.1695453322.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:25 +01:00
Uwe Kleine-König
206a972511 leds: pwm: Don't disable the PWM when the LED should be off
[ Upstream commit 76fe464c8e64e71b2e4af11edeef0e5d85eeb6aa ]

Disabling a PWM (i.e. calling pwm_apply_state with .enabled = false)
gives no guarantees what the PWM output does. It might freeze where it
currently is, or go in a High-Z state or drive the active or inactive
state, it might even continue to toggle.

To ensure that the LED gets really disabled, don't disable the PWM even
when .duty_cycle is zero.

This fixes disabling a leds-pwm LED on i.MX28. The PWM on this SoC is
one of those that freezes its output on disable, so if you disable an
LED that is full on, it stays on. If you disable a LED with half
brightness it goes off in 50% of the cases and full on in the other 50%.

Fixes: 41c42ff5dbe2 ("leds: simple driver for pwm driven LEDs")
Reported-by: Rogan Dawes <rogan@dawes.za.net>
Reported-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Fabio Estevam <festevam@denx.de>
Link: https://lore.kernel.org/r/20230922192834.1695727-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:25 +01:00
Marek Behún
893eedf596 leds: turris-omnia: Do not use SMBUS calls
[ Upstream commit 6de283b96b31b4890e3ee8c86caca2a3a30d1011 ]

The leds-turris-omnia driver uses three function for I2C access:
- i2c_smbus_write_byte_data() and i2c_smbus_read_byte_data(), which
  cause an emulated SMBUS transfer,
- i2c_master_send(), which causes an ordinary I2C transfer.

The Turris Omnia MCU LED controller is not semantically SMBUS, it
operates as a simple I2C bus. It does not implement any of the SMBUS
specific features, like PEC, or procedure calls, or anything. Moreover
the I2C controller driver also does not implement SMBUS, and so the
emulated SMBUS procedure from drivers/i2c/i2c-core-smbus.c is used for
the SMBUS calls, which gives an unnecessary overhead.

When I first wrote the driver, I was unaware of these facts, and I
simply used the first function that worked.

Drop the I2C SMBUS calls and instead use simple I2C transfers.

Fixes: 089381b27abe ("leds: initial support for Turris Omnia LEDs")
Signed-off-by: Marek Behún <kabel@kernel.org>
Link: https://lore.kernel.org/r/20230918161104.20860-2-kabel@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:24 +01:00
Marek Behún
aec3706971 leds: turris-omnia: Drop unnecessary mutex locking
[ Upstream commit 760b6b7925bf09491aafa4727eef74fc6bf738b0 ]

Do not lock driver mutex in the global LED panel brightness sysfs
accessors brightness_show() and brightness_store().

The mutex locking is unnecessary here. The I2C transfers are guarded by
I2C core locking mechanism, and the LED commands itself do not interfere
with other commands.

Fixes: 089381b27abe ("leds: initial support for Turris Omnia LEDs")
Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230802160748.11208-2-kabel@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
Stable-dep-of: 6de283b96b31 ("leds: turris-omnia: Do not use SMBUS calls")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:24 +01:00
Marek Behún
8869fd166f leds: trigger: tty: Do not use LED_ON/OFF constants, use led_blink_set_oneshot instead
[ Upstream commit 730094577e0c37e1bc40be37cbd41f71b0a8a2a4 ]

The tty LED trigger uses the obsolete LED_ON & LED_OFF constants when
setting LED brightness. This is bad because the LED_ON constant is equal
to 1, and so when activating the tty LED trigger on a LED class device
with max_brightness greater than 1, the LED is dimmer than it can be
(when max_brightness is 255, the LED is very dimm indeed; some devices
translate 1/255 to 0, so the LED is OFF all the time).

Instead of directly setting brightness to a specific value, use the
led_blink_set_oneshot() function from LED core to configure the blink.
This function takes the current configured brightness as blink
brightness if not zero, and max brightness otherwise.

This also changes the behavior of the TTY LED trigger. Previously if
rx/tx stats kept changing, the LED was ON all the time they kept
changing. With this patch the LED will blink on TTY activity.

Fixes: fd4a641ac88f ("leds: trigger: implement a tty trigger")
Signed-off-by: Marek Behún <kabel@kernel.org>
Link: https://lore.kernel.org/r/20230802090753.13611-1-kabel@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-09-19 12:22:49 +02:00
Marek Behún
0f715ea7d3 leds: multicolor: Use rounded division when calculating color components
[ Upstream commit 065d099f1be58187e6629273c50b948a02b7e1bf ]

Given channel intensity, LED brightness and max LED brightness, the
multicolor LED framework helper led_mc_calc_color_components() computes
the color channel brightness as

    chan_brightness = brightness * chan_intensity / max_brightness

Consider the situation when (brightness, intensity, max_brightness) is
for example (16, 15, 255), then chan_brightness is computed to 0
although the fractional divison would give 0.94, which should be rounded
to 1.

Use DIV_ROUND_CLOSEST here for the division to give more realistic
component computation:

    chan_brightness = DIV_ROUND_CLOSEST(brightness * chan_intensity,
                                        max_brightness)

Fixes: 55d5d3b46b08 ("leds: multicolor: Introduce a multicolor class definition")
Signed-off-by: Marek Behún <kabel@kernel.org>
Link: https://lore.kernel.org/r/20230801124931.8661-1-kabel@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-09-19 12:22:48 +02:00
Dan Carpenter
1a68bef237 leds: pwm: Fix error code in led_pwm_create_fwnode()
[ Upstream commit cadb2de2a7fd9e955381307de3eddfcc386c208e ]

Negative -EINVAL was intended, not positive EINVAL.  Fix it.

Fixes: 95138e01275e ("leds: pwm: Make error handling more robust")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/a33b981a-b2c4-4dc2-b00a-626a090d2f11@moroto.mountain
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-09-19 12:22:48 +02:00
Christian Marangi
86b93cbfe1 leds: trigger: netdev: Recheck NETDEV_LED_MODE_LINKUP on dev rename
commit cee4bd16c3195a701be683f7da9e88c6e11acb73 upstream.

Dev can be renamed also while up for supported device. We currently
wrongly clear the NETDEV_LED_MODE_LINKUP flag on NETDEV_CHANGENAME
event.

Fix this by rechecking if the carrier is ok on NETDEV_CHANGENAME and
correctly set the NETDEV_LED_MODE_LINKUP bit.

Fixes: 5f820ed52371 ("leds: trigger: netdev: fix handling on interface rename")
Cc: stable@vger.kernel.org # v5.5+
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230419210743.3594-2-ansuelsmth@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-07-23 13:47:36 +02:00
H. Nikolaus Schaller
8ffa1cb8bc leds: tca6507: Fix error handling of using fwnode_property_read_string
[ Upstream commit c1087c29e96a48e9080377e168d35dcb52fb068b ]

Commit 96f524105b9c ("leds: tca6507: use fwnode API instead of OF")

changed to fwnode API but did not take into account that a missing property
"linux,default-trigger" now seems to return an error and as a side effect
sets value to -1. This seems to be different from of_get_property() which
always returned NULL in any case of error.

Neglecting this side-effect leads to

[   11.201965] Unable to handle kernel paging request at virtual address ffffffff when read

in the strcmp() of led_trigger_set_default() if there is no led-trigger
defined in the DTS.

I don't know if this was recently introduced somewhere in the fwnode lib
or if the effect was missed in initial testing. Anyways it seems to be a
bug to ignore the error return value of an optional value here in the
driver.

Fixes: 96f524105b9c ("leds: tca6507: use fwnode API instead of OF")
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/cbae7617db83113de726fcc423a805ebaa1bfca6.1680433978.git.hns@goldelico.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-05-11 23:00:37 +09:00
Randy Dunlap
332ca024a8 leds: TI_LMU_COMMON: select REGMAP instead of depending on it
[ Upstream commit a61079efc87888587e463afaed82417b162fbd69 ]

REGMAP is a hidden (not user visible) symbol. Users cannot set it
directly thru "make *config", so drivers should select it instead of
depending on it if they need it.

Consistently using "select" or "depends on" can also help reduce
Kconfig circular dependency issues.

Therefore, change the use of "depends on REGMAP" to "select REGMAP".

Fixes: 3fce8e1eb994 ("leds: TI LMU: Add common code for TI LMU devices")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230226053953.4681-5-rdunlap@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-05-11 23:00:37 +09:00
Miaoqian Lin
690efcb582 leds: led-core: Fix refcount leak in of_led_get()
[ Upstream commit da1afe8e6099980fe1e2fd7436dca284af9d3f29 ]

class_find_device_by_of_node() calls class_find_device(), it will take
the reference, use the put_device() to drop the reference when not need
anymore.

Fixes: 699a8c7c4bd3 ("leds: Add of_led_get() and led_put()")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221220121807.1543790-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-10 09:39:32 +01:00
Hans de Goede
13cb7851a5 leds: led-class: Add missing put_device() to led_put()
[ Upstream commit 445110941eb94709216363f9d807d2508e64abd7 ]

led_put() is used to "undo" a successful of_led_get() call,
of_led_get() uses class_find_device_by_of_node() which returns
a reference to the device which must be free-ed with put_device()
when the caller is done with it.

Add a put_device() call to led_put() to free the reference returned
by class_find_device_by_of_node().

And also add a put_device() in the error-exit case of try_module_get()
failing.

Fixes: 699a8c7c4bd3 ("leds: Add of_led_get() and led_put()")
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230120114524.408368-2-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-10 09:39:13 +01:00
Uwe Kleine-König
3d0a101e71 leds: lm3601x: Don't use mutex after it was destroyed
[ Upstream commit 32f7eed0c763a9b89f6b357ec54b48398fc7b99e ]

The mutex might still be in use until the devm cleanup callback
devm_led_classdev_flash_release() is called. This only happens some time
after lm3601x_remove() completed.

Fixes: e63a744871a3 ("leds: lm3601x: Convert class registration to device managed")
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-10-26 12:34:39 +02:00
Merlijn Wajer
b03b18f0d1 leds: lp55xx: initialise output direction from dts
[ Upstream commit 9e87a8da747bf72365abb79e6f64fcca955b4f56 ]

Commit a5d3d1adc95f ("leds: lp55xx: Initialize enable GPIO direction to
output") attempts to fix this, but the fix did not work since at least
for the Nokia N900 the value needs to be set to HIGH, per the device
tree. So rather than hardcoding the value to a potentially invalid value
for some devices, let's set direction in lp55xx_init_device.

Fixes: a5d3d1adc95f ("leds: lp55xx: Initialize enable GPIO direction to output")
Fixes: 92a81562e695 ("leds: lp55xx: Add multicolor framework support to lp55xx")
Fixes: ac219bf3c9bd ("leds: lp55xx: Convert to use GPIO descriptors")
Signed-off-by: Merlijn Wajer <merlijn@wizzup.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-01-27 11:04:21 +01:00
Eddie James
239f32b4f1 leds: pca955x: Switch to i2c probe_new
The deprecated i2c probe functionality doesn't work with OF
compatible strings, as it only checks for the i2c device id. Switch
to the new way of probing and grab the match data to select the
chip type.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-20 11:00:08 +02:00
Eddie James
7c48159292 leds: pca955x: Let the core process the fwnode
Much of the fwnode processing in the PCA955x driver is now in the
LEDs core driver, so pass the fwnode in the init data when
registering the LED device. In order to preserve the existing naming
scheme, check for an empty name and set it to the LED number.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-20 11:00:08 +02:00
Eddie James
e46cb6d0c7 leds: pca955x: Implement the default-state property
In order to retain the LED state after a system reboot, check the
documented default-state device tree property during initialization.
Modify the behavior of the probe according to the property.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-20 11:00:07 +02:00
Eddie James
7086625fde leds: pca955x: Add brightness_get function
Add a function to fetch the state of the hardware LED.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-20 11:00:07 +02:00
Eddie James
2420ae02ce leds: pca955x: Clean up code formatting
Format the code. Add some variables to help shorten lines.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-20 11:00:06 +02:00
Eddie James
419066324e leds: leds-core: Implement the retain-state-shutdown property
Read the retain-state-shutdown device tree property to set the
existing LED_RETAIN_AT_SHUTDOWN flag. Then check the flag when
unregistering, and if set, don't set the brightness to OFF. This
is useful for systems that want to keep the HW state of the LED
across reboots.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-20 11:00:06 +02:00
Lukas Bulwahn
5358680e67 leds: trigger: remove reference to obsolete CONFIG_IDE_GD_ATA
Commit b7fb14d3ac63 ("ide: remove the legacy ide driver") removes the
definition of the config IDE_GD_ATA.

So, remove the obsolete reference in ./drivers/leds/trigger/Kconfig.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-18 08:59:47 +02:00
Jan Kundrát
8b624007e7 leds: lp50xx: Fix chip name in KConfig
The 9-channel one is called LP5009, not LP509.

Signed-off-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-18 08:58:21 +02:00
Denis Osterland-Heim
3d3d65bd27 leds: pwm: add support for default-state device property
This patch adds support for "default-state" devicetree property, which
allows to defer pwm init to first use of led.

This allows to configure the PWM early in bootloader to let the LED
blink until an application in Linux userspace sets something different.

Signed-off-by: Denis Osterland-Heim <Denis.Osterland@diehl.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-18 08:27:31 +02:00
Denis Osterland-Heim
791bc41163 leds: move default_state read from fwnode to core
This patch introduces a new function to read initial
default_state from fwnode.

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>
2021-08-18 08:27:30 +02:00
Pavel Machek
654933ae7d leds: flash: Remove redundant initialization of variable ret
Adjust initialization not to trigger Coverity warnings.

Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-16 08:47:08 +02:00
Andy Shevchenko
9cbc861095 leds: lgm-sso: Propagate error codes from callee to caller
The one of the latest change to the driver reveals the problem that
the error codes from callee aren't propagated to the caller of
__sso_led_dt_parse(). Fix this accordingly.

Fixes: 9999908ca1ab ("leds: lgm-sso: Put fwnode in any case during ->probe()")
Fixes: c3987cd2bca3 ("leds: lgm: Add LED controller driver for LGM SoC")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-07 09:12:45 +02:00
Hans de Goede
64f67b5240 leds: trigger: audio: Add an activate callback to ensure the initial brightness is set
Some 2-in-1s with a detachable (USB) keyboard(dock) have mute-LEDs in
the speaker- and/or mic-mute keys on the keyboard.

Examples of this are the Lenovo Thinkpad10 tablet (with its USB kbd-dock)
and the HP x2 10 series.

The detachable nature of these keyboards means that the keyboard and
thus the mute LEDs may show up after the user (or userspace restoring
old mixer settings) has muted the speaker and/or mic.

Current LED-class devices with a default_trigger of "audio-mute" or
"audio-micmute" initialize the brightness member of led_classdev with
ledtrig_audio_get() before registering the LED.

This makes the software state after attaching the keyboard match the
actual audio mute state, e.g. cat /sys/class/leds/foo/brightness will
show the right value.

But before this commit nothing was actually calling the led_classdev's
brightness_set[_blocking] callback so the value returned by
ledtrig_audio_get() was never actually being sent to the hw, leading
to the mute LEDs staying in their default power-on state, after
attaching the keyboard, even if ledtrig_audio_get() returned a different
state.

This could be fixed by having the individual LED drivers call
brightness_set[_blocking] themselves after registering the LED,
but this really is something which should be done by a led-trigger
activate callback.

Add an activate callback for this, fixing the issue of the
mute LEDs being out of sync after (re)attaching the keyboard.

Cc: Takashi Iwai <tiwai@suse.de>
Fixes: faa2541f5b1a ("leds: trigger: Introduce audio mute LED trigger")
Reviewed-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-03 23:57:17 +02:00
Andy Shevchenko
8aa41952ef leds: rt8515: Put fwnode in any case during ->probe()
fwnode_get_next_available_child_node() bumps a reference counting of
a returned variable. We have to balance it whenever we return to
the caller.

Fixes: e1c6edcbea13 ("leds: rt8515: Add Richtek RT8515 LED driver")
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2021-08-03 23:49:37 +02:00
Andy Shevchenko
7e1baaaa24 leds: lt3593: Put fwnode in any case during ->probe()
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: 8cd7d6daba93 ("leds: lt3593: Add device tree probing glue")
Cc: Daniel Mack <daniel@zonque.org>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-03 23:49:31 +02:00
Andy Shevchenko
d299ae942e leds: lm3697: Make error handling more robust
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>
2021-08-03 23:49:31 +02:00
Andy Shevchenko
3a923639d3 leds: lm3697: Update header block to reflect reality
Currently the headers to be included look rather like a random set.
Update them a bit to reflect the reality.

While at it, drop unneeded dependcy to OF.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-03 23:46:14 +02:00
Andy Shevchenko
690e4f3ad3 leds: lm3692x: Correct headers (of*.h -> mod_devicetable.h)
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>
2021-08-03 23:46:13 +02:00
Andy Shevchenko
3dd34dfb09 leds: lgm-sso: Convert to use list_for_each_entry*() API
Convert to use list_for_each_entry*() API insted of open coded variants.
It saves few lines of code and makes iteasier to read and maintain.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-03 23:46:12 +02:00
Andy Shevchenko
c31ef7004e leds: lgm-sso: Remove explicit managed GPIO resource cleanup
The idea of managed resources is that they will be cleaned up automatically
and in the proper order. Remove explicit GPIO cleanup.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-03 23:46:12 +02:00
Andy Shevchenko
1ed4d05e0a leds: lgm-sso: Don't spam logs when probe is deferred
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().

Fixes: c3987cd2bca3 ("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>
2021-08-03 23:46:11 +02:00
Andy Shevchenko
9999908ca1 leds: lgm-sso: Put fwnode in any case during ->probe()
fwnode_get_next_child_node() bumps a reference counting of a returned variable.
We have to balance it whenever we return to the caller.

All the same in fwnode_for_each_child_node() case.

Fixes: c3987cd2bca3 ("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>
2021-08-03 23:46:10 +02:00
Andy Shevchenko
e06ba23b05 leds: el15203000: Correct headers (of*.h -> mod_devicetable.h)
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>
Reviewed-by: Oleh Kravchenko <oleg@kaa.org.ua>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-08-03 23:46:09 +02:00
Jiapeng Chong
e642197562 leds: is31fl32xx: Fix missing error code in is31fl32xx_parse_dt()
The error code is missing in this code scenario, add the error code
'-EINVAL' to the return value 'ret'.

Eliminate the follow smatch warning:

drivers/leds/leds-is31fl32xx.c:388 is31fl32xx_parse_dt() warn: missing
error code 'ret'.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Fixes: 9d7cffaf99f5 ("leds: Add driver for the ISSI IS31FL32xx family of LED controllers")
Acked-by: David Rivshin <drivshin@allworx.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-07-12 10:30:07 +02:00
Linus Walleij
51f3b2c3d5 leds: ktd2692: Move driver to flash subdirectory
We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.

Cc: Ingi Kim <ingi2.kim@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-07-12 10:30:06 +02:00
Linus Walleij
61fa67a4e5 leds: lm3601x: Move driver to flash subdirectory
We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.

Cc: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-07-12 10:30:06 +02:00
Linus Walleij
9a7c066f6a leds: sgm3140: Move driver to flash subdirectory
We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.

Cc: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-07-12 10:30:06 +02:00
Linus Walleij
eb5a4422e4 leds: max77693: Move driver to flash subdirectory
We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-07-12 10:30:05 +02:00
Linus Walleij
f5d69f6290 leds: as3645a: Move driver to flash subdirectory
We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-07-12 10:30:05 +02:00
Linus Walleij
293fee7f60 leds: aat1290: Move driver to flash subdirectory
We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2021-07-12 10:30:04 +02:00
Linus Torvalds
303392fd5c This contains quite a lot of fixes, with more fixes in my inbox that
did not make it (sorry).
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Merge tag 'leds-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds

Pull LED updates from Pavel Machek:
 "This contains quite a lot of fixes, with more fixes in my inbox that
  did not make it (sorry)"

* tag 'leds-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: (36 commits)
  leds: lgm: Fix up includes
  leds: ktd2692: Fix an error handling path
  leds: as3645a: Fix error return code in as3645a_parse_node()
  leds: turris-omnia: add missing MODULE_DEVICE_TABLE
  leds: lp55xx: Initialize enable GPIO direction to output
  leds: lm36274: Add missed property.h
  leds: el15203000: Make error handling more robust
  leds: pwm: Make error handling more robust
  leds: lt3593: Make use of device properties
  leds: lp50xx: Put fwnode in error case during ->probe()
  leds: lm3697: Don't spam logs when probe is deferred
  leds: lm3692x: Put fwnode in any case during ->probe()
  leds: lm36274: Correct headers (of*.h -> mod_devicetable.h)
  leds: lm36274: Put fwnode in error case during ->probe()
  leds: lm3532: Make error handling more robust
  leds: lm3532: select regmap I2C API
  leds: lgm-sso: Drop duplicate NULL check for GPIO operations
  leds: lgm-sso: Remove unneeded of_match_ptr()
  leds: lgm-sso: Fix clock handling
  leds: el15203000: Introduce to_el15203000_led() helper
  ...
2021-07-03 11:57:42 -07:00