Commit Graph

1643 Commits

Author SHA1 Message Date
Linus Torvalds c8a684e2e1 LED updates for 5.20: new driver for bcm63138, is31fl319x updates,
fixups for multicolor. Clevo-mail driver got disabled, it needs API
 fix.
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Merge tag 'leds-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds

Pull LED updates from Pavel Machek:
 "A new driver for bcm63138, is31fl319x updates, fixups for multicolor.

  The clevo-mail driver got disabled, it needs an API fix"

* tag 'leds-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: (23 commits)
  leds: is31fl319x: use simple i2c probe function
  leds: is31fl319x: Fix devm vs. non-devm ordering
  leds: is31fl319x: Make use of dev_err_probe()
  leds: is31fl319x: Make use of device properties
  leds: is31fl319x: Cleanup formatting and dev_dbg calls
  leds: is31fl319x: Add support for is31fl319{0,1,3} chips
  leds: is31fl319x: Move chipset-specific values in chipdef struct
  leds: is31fl319x: Use non-wildcard names for vars, structs and defines
  leds: is31fl319x: Add missing si-en compatibles
  dt-bindings: leds: pwm-multicolor: document max-brigthness
  leds: turris-omnia: convert to use dev_groups
  leds: leds-bcm63138: get rid of LED_OFF
  leds: add help info about BCM63138 module name
  dt-bindings: leds: leds-bcm63138: unify full stops in descriptions
  dt-bindings: leds: lp50xx: fix LED children names
  dt-bindings: leds: class-multicolor: reference class directly in multi-led node
  leds: bcm63138: add support for BCM63138 controller
  dt-bindings: leds: add Broadcom's BCM63138 controller
  leds: clevo-mail: Mark as broken pending interface fix
  leds: pwm-multicolor: Support active-low LEDs
  ...
2022-08-08 11:36:21 -07:00
Andy Shevchenko 38ba0bb291 leds: is31fl319x: use simple i2c probe function
The i2c probe functions here don't use the id information provided in
their second argument, so the single-parameter i2c probe function
("probe_new") can be used instead.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-08-02 16:43:31 +02:00
Andy Shevchenko e1af5c8155 leds: is31fl319x: Fix devm vs. non-devm ordering
When non-devm resources are allocated they mustn't be followed by
devm allocations, otherwise it will break the tear down ordering
and might lead to crashes or other bugs during ->remove() stage.
Fix this by wrapping mutex_destroy() call with
devm_add_action_or_reset().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-08-02 16:43:31 +02:00
Andy Shevchenko 0d77252bc4 leds: is31fl319x: Make use of dev_err_probe()
Simplify the error handling in probe function by switching from
dev_err() to dev_err_probe().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-08-02 16:43:30 +02:00
Andy Shevchenko 69a9b172ad leds: is31fl319x: Make use of device properties
Convert the module to be property provider agnostic and allow
it to be used on non-OF platforms.

Add mod_devicetable.h include.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-08-02 16:43:30 +02:00
Vincent Knecht 7742683479 leds: is31fl319x: Cleanup formatting and dev_dbg calls
Fix remaining non-standard place for comments.

Remove remaining dev_dbg after regmap_read in is31fl3196_brightness_set.

Remove __func__ in dev_dbg calls, instead adding "channel" string to
describe the first displayed value.

Change remaining container_of() call to be on one line,
as well as a few others.

Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-08-02 16:43:30 +02:00
Vincent Knecht fa877cf1ab leds: is31fl319x: Add support for is31fl319{0,1,3} chips
Set specific chipset structs values for is31fl319{0,1,3}
so that those chips can actually work.
Datasheets:
https://lumissil.com/assets/pdf/core/IS31FL3190_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3191_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3193_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3196_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3199_DS.pdf

Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-08-02 16:43:30 +02:00
Vincent Knecht bd34266fde leds: is31fl319x: Move chipset-specific values in chipdef struct
Allow setting chips' specifics in chipdef struct by adding fields for:
- the reset register address
- a pointer to a regmap_config struct
- a pointer to a brightness_set function
- current default, min and max values
- a boolean to distinguish 319{0,1,3} and 319{6,9} chips
and use those fields in places where distinction has to be made.

The fields for 319{0,1,3} still point to 319{6,9} values.
No functional change.

Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-08-02 16:43:30 +02:00
Vincent Knecht 8e6dde1b44 leds: is31fl319x: Use non-wildcard names for vars, structs and defines
In order to add real support for is31fl3190, is31fl3191 and is31fl3193,
rename variant-dependent elements to not use 319X where needed.

3190 suffix is used for is31fl3190, is31fl3191 and is31fl3193 circuits.
3196 suffix is used for is31fl3196 and is31fl3199.

Those two groups have different register maps, current settings and even
a different interpretation of the software shutdown bit:
https://lumissil.com/assets/pdf/core/IS31FL3190_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3191_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3193_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3196_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3199_DS.pdf

Rename variables, structures and defines in preparation of the splitting.
No functional nor behaviour change.

Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-08-02 16:43:30 +02:00
Vincent Knecht dc6d28f485 leds: is31fl319x: Add missing si-en compatibles
Add si-en compatibles for all chip variants.

Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-08-02 16:43:30 +02:00
Greg Kroah-Hartman a01633cd86 leds: turris-omnia: convert to use dev_groups
The driver core supports the ability to handle the creation and removal
of device-specific sysfs files in a race-free manner.  Take advantage of
that by converting this driver to use this by moving the sysfs
attributes into a group and assigning the dev_groups pointer to it.

Cc: Pavel Machek <pavel@ucw.cz>
Cc: linux-leds@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-07-30 22:56:58 +02:00
Rafał Miłecki 92cfc71ee2 leds: leds-bcm63138: get rid of LED_OFF
The whole "enum led_brightness" is marked as obsolete. Replace it with a
(non-)zero check.

Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-07-17 14:55:40 +02:00
Rafał Miłecki bcc607cdbb leds: add help info about BCM63138 module name
It's what we do for all other LEDs drivers.

Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-07-17 14:55:40 +02:00
Rafał Miłecki a0ba692072 leds: bcm63138: add support for BCM63138 controller
It's a new controller first introduced in BCM63138 SoC. Later it was
also used in BCM4908, some BCM68xx and some BCM63xxx SoCs.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-07-17 13:35:46 +02:00
Pavel Machek 9b60b67519 leds: clevo-mail: Mark as broken pending interface fix
Setting blink rate using brightness is unusual and should be fixed.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-07-17 13:02:15 +02:00
Emil Renner Berthing 3dd7ed589f leds: pwm-multicolor: Support active-low LEDs
Add support for LEDs wired up to light when the PWM output is low, just
like the regular PWM LEDs.

Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-07-17 13:02:09 +02:00
Emil Renner Berthing 399e7aa821 leds: pwm-multicolor: Don't show -EPROBE_DEFER as errors
When requesting a PWM it might return -EPROBE_DEFER if it hasn't probed
yet. This is not an error, so just propagate the -EPROBE_DEFER without
logging anything. There is already dev_err_probe for exactly this
situation.

Fixes: 9fa2762110 ("leds: Add PWM multicolor driver")
Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-07-17 13:01:43 +02:00
Randy Dunlap 67bce62ac1 leds: clevo-mail: fix Kconfig "its" grammar
Use the possessive "its" instead of the contraction "it's"
where appropriate.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-07-17 10:52:18 +02:00
Henning Schild a6c80bec3c leds: simatic-ipc-leds-gpio: Add GPIO version of Siemens driver
On Apollo Lake the pinctrl drivers will now come up without ACPI. Use
that instead of open coding it.
Create a new driver for that which can later be filled with more GPIO
based models, and which has different dependencies.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee@kernel.org>
2022-07-14 10:50:43 +01:00
Henning Schild 759273c3c4 leds: simatic-ipc-leds: Convert to use P2SB accessor
Since we have a common P2SB accessor in tree we may use it instead of
open coded variants.

Replace custom code by p2sb_bar() call.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee@kernel.org>
2022-07-14 10:50:36 +01:00
Linus Torvalds 96479c0980 ARM: multiplatform changes, part 2
The second part of the multiplatform changes now converts the
 Intel/Marvell PXA platform along with the rest. The patches went through
 several rebases before the merge window as bugs were found, so they
 remained separate.
 
 This has to touch a lot of drivers, in particular the touchscreen,
 pcmcia, sound and clk bits, to detach the driver files from the
 platform and board specific header files.
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Merge tag 'arm-multiplatform-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull more ARM multiplatform updates from Arnd Bergmann:
 "The second part of the multiplatform changes now converts the
  Intel/Marvell PXA platform along with the rest. The patches went
  through several rebases before the merge window as bugs were found, so
  they remained separate.

  This has to touch a lot of drivers, in particular the touchscreen,
  pcmcia, sound and clk bits, to detach the driver files from the
  platform and board specific header files"

* tag 'arm-multiplatform-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (48 commits)
  ARM: pxa/mmp: remove traces of plat-pxa
  ARM: pxa: convert to multiplatform
  ARM: pxa/sa1100: move I/O space to PCI_IOBASE
  ARM: pxa: remove support for MTD_XIP
  ARM: pxa: move mach/*.h to mach-pxa/
  ARM: PXA: fix multi-cpu build of xsc3
  ARM: pxa: move plat-pxa to drivers/soc/
  ARM: mmp: rename pxa_register_device
  ARM: mmp: remove tavorevb board support
  ARM: pxa: remove unused mach/bitfield.h
  ARM: pxa: move clk register definitions to driver
  ARM: pxa: move smemc register access from clk to platform
  cpufreq: pxa3: move clk register access to clk driver
  ARM: pxa: remove get_clk_frequency_khz()
  ARM: pxa: pcmcia: move smemc configuration back to arch
  ASoC: pxa: i2s: use normal MMIO accessors
  ASoC: pxa: ac97: use normal MMIO accessors
  ASoC: pxa: use pdev resource for FIFO regs
  Input: wm97xx - get rid of irq_enable method in wm97xx_mach_ops
  Input: wm97xx - switch to using threaded IRQ
  ...
2022-06-02 15:23:54 -07:00
Bjorn Andersson e98a860f65 leds: qcom-lpg: Require pattern to follow documentation
The leds-trigger-pattern documentation describes how the brightness of
the LED should transition linearly from one brightness value to the
next, over the given delta_t.

But the pattern engine in the Qualcomm LPG hardware only supports
holding the brightness for each entry for the period.
This subset of patterns can be represented in the leds-trigger-pattern
by injecting zero-time transitions after each entry in the pattern,
resulting in a pattern that pattern that can be rendered by the LPG.

Rework LPG pattern interface to require these zero-time transitions, to
make it comply with this subset of patterns and reject the patterns it
can't render.

Fixes: 24e2d05d1b ("leds: Add driver for Qualcomm LPG")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-24 22:08:10 +02:00
Uwe Kleine-König 73bce575ed leds: lp50xx: Remove duplicated error reporting in .remove()
Returning an error value from an i2c remove callback results in an error
message being emitted by the i2c core, but otherwise it doesn't make a
difference. The device goes away anyhow and the devm cleanups are
called.

As stk3310_set_state() already emits an error message on failure and the
additional error message by the i2c core doesn't add any useful
information, don't pass the error value up the stack. Instead continue
to clean up and return 0.

This patch is a preparation for making i2c remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-07 23:20:54 +02:00
Johan Hovold 1d6a1b5e50 leds: qcom-lpg: add missing PWM dependency
The Qualcomm LPG driver fails to probe unless PWM support is enabled so
add the missing Kconfig dependency.

Fixes: 24e2d05d1b ("leds: Add driver for Qualcomm LPG")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-07 23:20:14 +02:00
Markuss Broks 69175786d5 leds: ktd2692: Make aux-gpios optional
Make the AUX pin optional, since it isn't a core part of functionality,
and the device is designed to be operational with only one CTRL pin.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-07 23:12:19 +02:00
Markuss Broks 1d3b5aaaa4 leds: ktd2692: Avoid duplicate error messages on probe deferral
Use dev_err_probe instead of dev_err to avoid duplicate error
messages if the GPIO allocation makes the probe defer.

Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-07 23:12:18 +02:00
Uwe Kleine-König e1347bd4ab leds: is31fl32xx: Improve error reporting in .remove()
Returning an error value in an i2c remove callback results in a generic
error message being emitted by the i2c core, but otherwise it doesn't make
a difference. The device goes away anyhow and the devm cleanups are
called.

So instead of triggering the generic i2c error message, emit a more helpful
message if a problem occurs and return 0 to suppress the generic message.

This patch is a preparation for making i2c remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-07 23:10:22 +02:00
Sven Schwermer 818d03b3d4 leds: Move pwm-multicolor driver into rgb directory
The drivers/leds/rgb subdirectory is relatively fresh, so we move this
new PWM multi-color driver into it.

Signed-off-by: Sven Schwermer <sven.schwermer@disruptive-technologies.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-07 23:09:31 +02:00
Sven Schwermer 9fa2762110 leds: Add PWM multicolor driver
By allowing to group multiple monochrome PWM LEDs into multicolor LEDs,
all involved LEDs can be controlled in-sync. This enables using effects
using triggers, etc.

Signed-off-by: Sven Schwermer <sven.schwermer@disruptive-technologies.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-05 10:04:52 +02:00
Linus Walleij 835fc89e24 leds: regulator: Make probeable from device tree
The regulator LED can easily be adapted to probe from the
device tree.

We switch led_classdev_register() to led_classdev_register_ext()
passing some struct led_init_data init_data that we leave NULL
save the fwnode if platform data isn't present so that it will be
populated from the device tree.

If we have platform data we set up the name from the platform
data but using init_data instead.

Cc: Antonio Ospite <ao2@ao2.it>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-05 10:04:52 +02:00
Linus Walleij 4c350c658f leds: regulator: Add dev helper variable
Instead of repeating the hard to read &pdev->dev just create a
local struct device *dev in probe().

Cc: Antonio Ospite <ao2@ao2.it>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-05 10:04:52 +02:00
Uwe Kleine-König c55f75c4f9 leds: pca9532: Make pca9532_destroy_devices() return void
Up to now pca9532_destroy_devices() returns always zero because it's
always called with data != NULL. Remove the never-taken error path and
make it return void which makes it easier to see in the callers that
there is no error to handle.

Also the return value of i2c remove callbacks is ignored anyway.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-04 19:37:51 +02:00
Satya Priya 96c59c8ba8 leds: Add pm8350c support to Qualcomm LPG driver
Add pm8350c compatible and lpg_data to the driver.

Signed-off-by: Satya Priya <quic_c_skakit@quicinc.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-04 19:31:17 +02:00
Bjorn Andersson 24e2d05d1b leds: Add driver for Qualcomm LPG
The Light Pulse Generator (LPG) is a PWM-block found in a wide range of
PMICs from Qualcomm. These PMICs typically comes with 1-8 LPG instances,
with their output being routed to various other components, such as
current sinks or GPIOs.

Each LPG instance can operate on fixed parameters or based on a shared
lookup-table, altering the duty cycle over time. This provides the means
for hardware assisted transitions of LED brightness.

A typical use case for the fixed parameter mode is to drive a PWM
backlight control signal, the driver therefor allows each LPG instance
to be exposed to the kernel either through the LED framework or the PWM
framework.

A typical use case for the LED configuration is to drive RGB LEDs in
smartphones etc, for which the driver supports multiple channels to be
ganged up to a MULTICOLOR LED. In this configuration the pattern
generators will be synchronized, to allow for multi-color patterns.

The idea of modelling this as a LED driver ontop of a PWM driver was
considered, but setting the properties related to patterns does not fit
in the PWM API. Similarly the idea of just duplicating the lower bits in
a PWM and LED driver separately was considered, but this would not allow
the PWM channels and LEDs to be configured on a per-board basis. The
driver implements the more complex LED interface, and provides a PWM
interface on the side of that, in the same driver.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Luca Weiss <luca@z3ntu.xyz>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Tested-by: Marijn Suijten <marijn.suijten@somainline.org>
[On the Sony Xperia Nile Discovery, SDM630]
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-05-04 09:17:31 +02:00
Arnd Bergmann 08d3df8c81 ARM: pxa: split up mach/hardware.h
The mach/hardware.h is included in lots of places, and it provides
three different things on pxa:

- the cpu_is_pxa* macros
- an indirect inclusion of mach/addr-map.h
- the __REG() and io_pv2() helper macros

Split it up into separate <linux/soc/pxa/cpu.h> and mach/pxa-regs.h
headers, then change all the files that use mach/hardware.h to
include the exact set of those three headers that they actually
need, allowing for further more targeted cleanup.

linux/soc/pxa/cpu.h can remain permanently exported and is now in
a global location along with similar headers. pxa-regs.h and
addr-map.h are only used in a very small number of drivers now
and can be moved to arch/arm/mach-pxa/ directly when those drivers
are to pass the necessary data as resources.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mark Brown <broonie@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: linux-input@vger.kernel.org
Cc: linux-leds@vger.kernel.org
Cc: linux-mmc@vger.kernel.org
Cc: linux-mtd@lists.infradead.org
Cc: linux-rtc@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-fbdev@vger.kernel.org
Cc: linux-watchdog@vger.kernel.org
Cc: alsa-devel@alsa-project.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-04-19 16:27:05 +02:00
Linus Torvalds dfb0a0b715 LED updates for 5.18-rc1. Nothing major here, there are two drivers
that need review and did not make it.
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Merge tag 'leds-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds

Pull LED updates from Pavel Machek:
 "Nothing major here, there are two drivers that need review and did not
  make it into this round"

* tag 'leds-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
  leds: pca955x: Allow zero LEDs to be specified
  leds: pca955x: Make the gpiochip always expose all pins
  leds: simatic-ipc-leds: Don't directly deref ioremap_resource() returned ptr
  leds: simatic-ipc-leds: Make simatic_ipc_led_mem_res static
  leds: lm3692x: Return 0 from remove callback
  leds: sgm3140: Add ocs,ocp8110 compatible
  dt-bindings: vendor-prefixes: Add ocs prefix
  dt-bindings: leds: common: fix unit address in max77693 example
2022-03-27 14:09:48 -07:00
Andrew Jeffery e26557a0aa leds: pca955x: Allow zero LEDs to be specified
It's valid to use the PCA955x devices just for GPIOs and not for LEDs.
In this case, as PCA955X_TYPE_GPIO is now equivalent to
PCA955X_TYPE_NONE, remove the test for whether we have any child nodes
specified in the devicetree.

A consequence of this is it's now possible to bind the driver to a
PCA955x device when dynamically instantiated through the I2C subsystem's
`new_device` interface.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-03-02 09:51:40 +01:00
Andrew Jeffery ca386253ff leds: pca955x: Make the gpiochip always expose all pins
The devicetree binding allows specifying which pins are GPIO vs LED.
Limiting the instantiated gpiochip to just these pins as the driver
currently does requires an arbitrary mapping between pins and GPIOs, but
such a mapping is not implemented by the driver. As a result,
specifying GPIOs in such a way that they don't map 1-to-1 to pin indexes
does not function as expected.

Establishing such a mapping is more complex than not and even if we did,
doing so leads to a slightly hairy userspace experience as the behaviour
of the PCA955x gpiochip would depend on how the pins are assigned in the
devicetree. Instead, always expose all pins via the gpiochip to provide
a stable interface and track which pins are in use.

Specifying a pin as `type = <PCA955X_TYPE_GPIO>;` in the devicetree
becomes a no-op.

I've assessed the impact of this change by looking through all of the
affected devicetrees as of the tag leds-5.15-rc1:

```
$ git grep -l 'pca955[0123]' $(find . -name dts -type d)
arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts
arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
arch/arm/boot/dts/aspeed-bmc-opp-mihawk.dts
arch/arm/boot/dts/aspeed-bmc-opp-mowgli.dts
arch/arm/boot/dts/aspeed-bmc-opp-swift.dts
arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts
arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
```

These are all IBM-associated platforms. I've analysed both the
devicetrees and schematics where necessary to determine whether any
systems hit the hazard of the current broken behaviour. For the most
part, the systems specify the pins as either all LEDs or all GPIOs, or
at least do so in a way such that the broken behaviour isn't exposed.

The main counter-point to this observation is the Everest system whose
devicetree describes a large number of PCA955x devices and in some cases
has pin assignments that hit the hazard. However, there does not seem to
be any use of the affected GPIOs in the userspace associated with
Everest.

Regardless, any use of the hazardous GPIOs in Everest is already broken,
so let's fix the interface and then fix any already broken userspace
with it.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-03-02 09:50:58 +01:00
Hans de Goede 8b43ef06ff leds: simatic-ipc-leds: Don't directly deref ioremap_resource() returned ptr
Sparse (rightly) currently gives the following warning:

drivers/leds/simple/simatic-ipc-leds.c:155:40:
 sparse: sparse: incorrect type in assignment (different address spaces)
 expected void *static [toplevel] simatic_ipc_led_memory
 got void [noderef] __iomem *

Fix this by changing the type of simatic_ipc_led_memory to void __iomem *
and use readl()/writel() to access it.

Cc: Henning Schild <henning.schild@siemens.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Gerd Haeussler <gerd.haeussler.ext@siemens.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-02-17 12:25:30 +01:00
Hans de Goede a8f59497a4 leds: simatic-ipc-leds: Make simatic_ipc_led_mem_res static
simatic_ipc_led_mem_res is not used outside of the driver, make it static.

Cc: Henning Schild <henning.schild@siemens.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-02-17 12:25:09 +01:00
Uwe Kleine-König cf642faef7 leds: lm3692x: Return 0 from remove callback
The only difference between returning zero or a non-zero value is that
for the non-zero case the i2c will print a generic error message
("remove failed (-ESOMETHING), will be ignored").

In this case however the driver itself already emitted a more helpful
error message, so the additional error message isn't helpful at all.

The long-term goal is to make the i2c remove callback return void, making
all implementations return 0 is preparatory work for this change.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-02-12 13:02:50 +01:00
André Apitzsch 77d62fcceb leds: sgm3140: Add ocs,ocp8110 compatible
Orient-Chip's ocp8110 has the same pin configuration as the sgm3140.
The data sheet can be found at:
https://cdn.datasheetspdf.com/pdf-down/O/C/P/OCP8110-OrientChip.pdf

Signed-off-by: André Apitzsch <git@apitzsch.eu>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-02-12 12:27:53 +01:00
Uwe Kleine-König a0386bba70
spi: make remove callback a void function
The value returned by an spi driver's remove function is mostly ignored.
(Only an error message is printed if the value is non-zero that the
error is ignored.)

So change the prototype of the remove function to return no value. This
way driver authors are not tempted to assume that passing an error to
the upper layer is a good idea. All drivers are adapted accordingly.
There is no intended change of behaviour, all callbacks were prepared to
return 0 before.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Claudius Heine <ch@denx.de>
Acked-by: Stefan Schmidt <stefan@datenfreihafen.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC
Acked-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Acked-by: Łukasz Stelmach <l.stelmach@samsung.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220123175201.34839-6-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-02-09 13:00:45 +00:00
Linus Torvalds d9b5941bb5 LED updates for 5.17. Nothing major is happening here.
I had to rebase at last moment to fix wrong author of one
 commit. Sorry about that.
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Merge tag 'leds-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds

Pull LED updates from Pavel Machek:
 "Nothing major is happening here"

* tag 'leds-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
  leds: lp55xx: initialise output direction from dts
  ARM: dts: omap3-n900: Fix lp5523 for multi color
  leds: ktd2692: Drop calling dev_of_node() in ktd2692_parse_dt
  leds: lgm-sso: Get rid of duplicate of_node assignment
  leds: tca6507: Get rid of duplicate of_node assignment
  leds: leds-fsg: Drop FSG3 LED driver
  leds: lp50xx: remove unused variable
  dt-bindings: leds: Replace moonlight with indicator in mt6360 example
  leds: led-core: Update fwnode with device_set_node
  leds: tca6507: use swap() to make code cleaner
  leds: Add mt6360 driver
  dt-bindings: leds: Add bindings for MT6360 LED
2022-01-12 16:59:22 -08:00
Merlijn Wajer 9e87a8da74 leds: lp55xx: initialise output direction from dts
Commit a5d3d1adc9 ("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: a5d3d1adc9 ("leds: lp55xx: Initialize enable GPIO direction to output")
Fixes: 92a81562e6 ("leds: lp55xx: Add multicolor framework support to lp55xx")
Fixes: ac219bf3c9 ("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>
2022-01-12 19:43:15 +01:00
Lad Prabhakar a05f5d0e6a leds: ktd2692: Drop calling dev_of_node() in ktd2692_parse_dt
output of dev_of_node() is already assigned to "np" variable in
ktd2692_parse_dt(). Use "np" variable to check if OF node is NULL
instead of calling dev_of_node() again.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-01-12 19:43:15 +01:00
Andy Shevchenko 2702c9be20 leds: lgm-sso: Get rid of duplicate of_node assignment
GPIO library does copy the of_node from the parent device of
the GPIO chip, there is no need to repeat this in the individual
drivers. Remove assignment here.

For the details one may look into the of_gpio_dev_init() implementation.

Call graph:
   --> sso_gpio_gc_init()
     --> devm_gpiochip_add_data
       --> devm_gpiochip_add_data_with_key
         --> gpiochip_add_data_with_key()
           --> of_gpio_dev_init()

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-01-12 19:43:15 +01:00
Andy Shevchenko 27d1a6210d leds: tca6507: Get rid of duplicate of_node assignment
GPIO library does copy the of_node from the parent device of
the GPIO chip, there is no need to repeat this in the individual
drivers. Remove assignment here.

For the details one may look into the of_gpio_dev_init() implementation.

Call graph:
   --> tca6507_probe_gpios()
     --> gpiochip_add_data()
       --> gpiochip_add_data_with_key()
         --> of_gpio_dev_init()

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-01-12 19:43:15 +01:00
Linus Walleij b7f1ac9bb6 leds: leds-fsg: Drop FSG3 LED driver
The board file using this driver has been deleted and the
FSG3 LEDs can be modeled using a system controller and some
register bit LEDs in the device tree so this driver is no
longer needed.

Reported-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Krzysztof Hałasa <khalasa@piap.pl>
Cc: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-01-12 19:43:15 +01:00
Sven Schuchmann 6212264be7 leds: lp50xx: remove unused variable
During code review this unused variable was found. Remove it.

Signed-off-by: Sven Schuchmann <schuchmann@schleissheimer.de>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
2022-01-12 19:43:14 +01:00