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Merge tag 'leds_for_4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED updates from Jacek Anaszewski:
"LED class drivers improvements:
leds-pca955x:
- add Device Tree support and bindings
- use devm_led_classdev_register()
- add GPIO support
- prevent crippled LED class device name
- check for I2C errors
leds-gpio:
- add optional retain-state-shutdown DT property
- allow LED to retain state at shutdown
leds-tlc591xx:
- merge conditional tests
- add missing of_node_put
leds-powernv:
- delete an error message for a failed memory allocation in
powernv_led_create()
leds-is31fl32xx.c
- convert to using custom %pOF printf format specifier
Constify attribute_group structures in:
- leds-blinkm
- leds-lm3533
Make several arrays static const in:
- leds-aat1290
- leds-lp5521
- leds-lp5562
- leds-lp8501"
* tag 'leds_for_4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
leds: pca955x: check for I2C errors
leds: gpio: Allow LED to retain state at shutdown
dt-bindings: leds: gpio: Add optional retain-state-shutdown property
leds: powernv: Delete an error message for a failed memory allocation in powernv_led_create()
leds: lp8501: make several arrays static const
leds: lp5562: make several arrays static const
leds: lp5521: make several arrays static const
leds: aat1290: make array max_mm_current_percent static const
leds: pca955x: Prevent crippled LED device name
leds: lm3533: constify attribute_group structure
dt-bindings: leds: add pca955x
leds: pca955x: add GPIO support
leds: pca955x: use devm_led_classdev_register
leds: pca955x: add device tree support
leds: Convert to using %pOF instead of full_name
leds: blinkm: constify attribute_group structures.
leds: tlc591xx: add missing of_node_put
leds: tlc591xx: merge conditional tests
Don't populate the array max_mm_current_percent on the stack, instead
make it static const. Makes the object code smaller by over 280 bytes:
Before:
text data bss dec hex filename
7225 1936 64 9225 2409 ./drivers/leds/leds-aat1290.o
After:
text data bss dec hex filename
6847 2032 64 8943 22ef ./drivers/leds/leds-aat1290.o`
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
The V4L2 flash interface allows controlling multiple LEDs through a single
sub-devices if, and only if, these LEDs are of different types. This
approach scales badly for flash controllers that drive multiple flash LEDs
or for LED specific associations. Essentially, the original assumption of a
LED driver chip that drives a single flash LED and an indicator LED is no
longer valid.
Address the matter by registering one sub-device per LED.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com> (for greybus/light)
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Pass the more generic fwnode_handle to the init function than the
device_node.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The refcount of device_node increases after of_get_next_available_child()
is called. Make sure it is decremented also in case of DT parsing error.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Now the core implements the work queue, remove it from the drivers,
and switch to using brightness_set_blocking op.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
The initial purpose of brightness_set_sync op, introduced along with
the LED flash class extension, was to add a means for setting torch LED
brightness as soon as possible, which couldn't have been guaranteed by
brightness_set op. This patch renames the op to brightness_set_blocking,
which describes its purpose in a more generic way. It is beneficial
in view of the prospective changes in the LED core, aiming at removing
the need for using work queues in LED class drivers that can sleep
or use delays while setting brightness.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.
Signed-off-by: Luis de Bethencourt <luis@debethencourt.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Since 39b2bbe3d7 (gpio: add flags argument to gpiod_get*() functions)
which appeared in v3.17-rc1, the gpiod_get* functions take an additional
parameter that allows to specify direction and initial value for output.
In this case the driver cannot easily be simplified but as the flags
parameter will become mandatory soon this change is necessary
beforehand.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Add support for V4L2 Flash sub-device to the aat1290 LED Flash class
driver. The support allows for V4L2 Flash sub-device to take the control
of the LED Flash class device.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Bryan Wu <cooloney@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
This patch adds a driver for the 1.5A Step-Up Current Regulator
for Flash LEDs. The device is programmed through a Skyworks proprietary
AS2Cwire serial digital interface.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
