Commit Graph

1064 Commits

Author SHA1 Message Date
Linus Torvalds 4f5dfdd290 LED updates for 4.13
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Merge tag 'leds_for_4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED updates from Jacek Anaszewski:
 "This time we're removing more than adding:

  Removed drivers:

    leds-versatile:
      - all users of the Versatile LED driver are deleted and replaced
        with the very generic leds-syscon

    leds-sead3:
      - SEAD3 is using the generic leds-syscon & regmap based
        register-bit-led driver

  LED class drivers improvements:

    ledtrig-gpio:
      - use threaded IRQ, which both simplifies the code because we can
        drop the workqueue indirection, and it enables using the trigger
        for GPIOs that work with threaded IRQs themselves
      - refresh LED state after GPIO change since the new GPIO may have
        a different state than the old one

    leds-lp55xx:
      - make various arrays static const

    leds-pca963x:
      - add bindings to invert polarity"

* tag 'leds_for_4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: lp55xx: make various arrays static const
  leds: Remove SEAD-3 driver
  leds: trigger: gpio: Use threaded IRQ
  leds: trigger: gpio: Refresh LED state after GPIO change
  leds: Delete obsolete Versatile driver
  leds: pca963x: Add bindings to invert polarity
2017-07-06 11:32:40 -07:00
Colin Ian King 4d1707c1c6 leds: lp55xx: make various arrays static const
Several arrays are currently on-stack and instead should be made
static const.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-06-30 23:15:44 +02:00
Mauro Carvalho Chehab ff6ccad361 Linux 4.12-rc6
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Merge tag 'v4.12-rc6' into patchwork

Linux 4.12-rc6

* tag 'v4.12-rc6': (813 commits)
  Linux 4.12-rc6
  mm: larger stack guard gap, between vmas
  virtio_balloon: disable VIOMMU support
  mm: correct the comment when reclaimed pages exceed the scanned pages
  userfaultfd: shmem: handle coredumping in handle_userfault()
  mm: numa: avoid waiting on freed migrated pages
  swap: cond_resched in swap_cgroup_prepare()
  mm/memory-failure.c: use compound_head() flags for huge pages
  perf unwind: Report module before querying isactivation in dwfl unwind
  fs: pass on flags in compat_writev
  objtool: Add fortify_panic as __noreturn function
  powerpc/debug: Add missing warn flag to WARN_ON's non-builtin path
  USB: gadgetfs, dummy-hcd, net2280: fix locking for callbacks
  drm: mxsfb_crtc: Reset the eLCDIF controller
  drm/mgag200: Fix to always set HiPri for G200e4 V2
  i2c: ismt: fix wrong device address when unmap the data buffer
  i2c: rcar: use correct length when unmapping DMA
  powerpc/xive: Fix offset for store EOI MMIOs
  drm/tegra: Correct idr_alloc() minimum id
  drm/tegra: Fix lockup on a use of staging API
  ...

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-06-20 08:51:56 -03:00
Paul Burton 64601cb134 leds: Remove SEAD-3 driver
SEAD3 is using the generic syscon & regmap based register-bit-led
driver as of commit c764583f40 ("MIPS: SEAD3: Use register-bit-led
driver via DT for LEDs") merged in the v4.9 cycle. As such the custom
SEAD-3 LED driver is now unused, so remove it.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: linux-leds@vger.kernel.org
Cc: linux-mips@linux-mips.org
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-06-19 20:56:47 +02:00
Linus Torvalds 374d801522 LED fixes for 4.12-rc6
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Merge tag 'led_fixes_for_4.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED fixes from Jacek Anaszewski:
 "Two LED fixes:

   - fix signal source assignment for leds-bcm6328

   - revert patch that intended to fix LED behavior on suspend but it
     had a side effect preventing suspend at all due to uevent being
     sent on trigger removal"

* tag 'led_fixes_for_4.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  Revert "leds: handle suspend/resume in heartbeat trigger"
  leds: bcm6328: fix signal source assignment for leds 4 to 7
2017-06-18 08:51:35 +09:00
Zhang Bo 436c4c45b5 Revert "leds: handle suspend/resume in heartbeat trigger"
This reverts commit 5ab92a7cb8.

System cannot enter suspend mode because of heartbeat led trigger.
In autosleep_wq, try_to_suspend function will try to enter suspend
mode in specific period. it will get wakeup_count then call pm_notifier
chain callback function and freeze processes.
Heartbeat_pm_notifier is called and it call led_trigger_unregister to
change the trigger of led device to none. It will send uevent message
and the wakeup source count changed. As wakeup_count changed, suspend
will abort.

Fixes: 5ab92a7cb8 ("leds: handle suspend/resume in heartbeat trigger")
Signed-off-by: Zhang Bo <bo.zhang@nxp.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-06-13 20:37:01 +02:00
Jonas Gorski 4f02b50ece leds: bcm6328: fix signal source assignment for leds 4 to 7
Each nibble represents 4 LEDs, and in case of the higher register, bit 0
represents LED 4, so we need to use modulus for the LED number as well.

Fixes: fd7b025a23 ("leds: add BCM6328 LED driver")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-06-13 20:36:56 +02:00
Mauro Carvalho Chehab 42654ebad0 media fixes for v4.12-rc4
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Merge tag 'media/v4.12-2' into patchwork

media fixes for v4.12-rc4

* tag 'media/v4.12-2': (598 commits)
  [media] rc-core: race condition during ir_raw_event_register()
  [media] cec: drop MEDIA_CEC_DEBUG
  [media] cec: rename MEDIA_CEC_NOTIFIER to CEC_NOTIFIER
  [media] cec: select CEC_CORE instead of depend on it
  [media] rainshadow-cec: ensure exit_loop is intialized
  [media] atomisp: don't treat warnings as errors
  Linux 4.12-rc3
  x86/ftrace: Make sure that ftrace trampolines are not RWX
  x86/mm/ftrace: Do not bug in early boot on irqs_disabled in cpu_flush_range()
  selftests/ftrace: Add a testcase for many kprobe events
  kprobes/x86: Fix to set RWX bits correctly before releasing trampoline
  ftrace: Fix memory leak in ftrace_graph_release()
  ipv4: add reference counting to metrics
  net: ethernet: ax88796: don't call free_irq without request_irq first
  ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets
  sctp: fix ICMP processing if skb is non-linear
  net: llc: add lock_sock in llc_ui_bind to avoid a race condition
  PCI/msi: fix the pci_alloc_irq_vectors_affinity stub
  blk-mq: Only register debugfs attributes for blk-mq queues
  x86/timers: Move simple_udelay_calibration past init_hypervisor_platform
  ...

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-06-07 07:50:49 -03:00
Sakari Ailus 048ea05b4f [media] v4l: flash led class: Use fwnode_handle instead of device_node in init
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>
2017-06-06 09:27:51 -03:00
Jan Kiszka 71c17b06ef leds: trigger: gpio: Use threaded IRQ
This both simplifies the code because we can drop the workqueue
indirection, and it enables using the trigger for GPIOs that work with
threaded IRQs themselves.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-05-29 21:55:58 +02:00
Jan Kiszka 71afe3cb1e leds: trigger: gpio: Refresh LED state after GPIO change
The new GPIO may have a different state than the old one.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-05-29 21:55:04 +02:00
Tin Huynh aace34c0bb leds: pca955x: Correct I2C Functionality
The driver checks an incorrect flag of functionality of adapter.
When a driver requires i2c_smbus_read_byte_data and
i2c_smbus_write_byte_data, it should check I2C_FUNC_SMBUS_BYTE_DATA
instead I2C_FUNC_I2C.
This patch fixes the problem.

Signed-off-by: Tin Huynh <tnhuynh@apm.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-05-22 21:12:44 +02:00
Linus Walleij 7678da8ee6 leds: Delete obsolete Versatile driver
All users of the Versatile LED driver are deleted and replaced
with the very generic leds-syscon. Delete the old driver.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-05-14 13:01:29 +02:00
Anders Darander bb29b9cccd leds: pca963x: Add bindings to invert polarity
Add a new DT property, nxp,inverted-out, to invert the polarity
of the output.

Tested on PCA9634.

Signed-off-by: Anders Darander <anders@chargestorm.se>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-05-14 13:01:29 +02:00
Stephen Boyd d1b7c9344b scripts/spelling.txt: add "memory" pattern and fix typos
Fix typos and add the following to the scripts/spelling.txt:

      momery||memory

Link: http://lkml.kernel.org/r/20170317011131.6881-1-sboyd@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-08 17:15:13 -07:00
Felix Brack 28c5fe9901 leds: pca9532: Extend pca9532 device tree support
This patch extends the device tree support for the pca9532 by adding
the leds 'default-state' property.

Signed-off-by: Felix Brack <fb@ltec.ch>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-04-19 20:27:50 +02:00
Sebastian Reichel cd3b0b0532 leds: cpcap: new driver
Motorola CPCAP is a PMIC (power management integrated circuit) found
in multiple smartphones. This driver adds support for the chip's LED
controllers. This introduces support for all controllers used by the
Droid 4. According to Motorola's driver (no datasheets available)
there a couple of more LED controllers. I did not add support for
them, since I cannot verify that they work with my modifications.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-29 21:02:27 +02:00
Andy Shevchenko f4363d8107 leds: lp3952: Use 'if (ret)' pattern
Instead of unusual "if (!ret)" use "if (ret)" in lp3952_get_label().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-23 20:33:59 +01:00
Andy Shevchenko 9696217847 leds: lp3952: Remove ACPI support for lp3952
In ACPI world any ID should be carefully chosen and registered
officially. The discussion [1] as I read it gets to wilful assignment
an ID for non-existing real DSDT example.

Rafael already told [2] how this device would be enumerated using
compatible string. To be more precise look at the possible DSDT excerpt
below:

	Device (LDX0) {
		Name (_HID, "PRP0001")
		Name (_DDN, "TI LP3952 compatible led driver")
		...
	})

	Name (_DSD, Package () {
		ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
		Package () {
			Package () {"compatible", "ti,lp3952"},
			...
		}
	})

Based on above, remove non-official ACPI IDs and enumeration from the
driver.

Note: currently driver has no compatible strings at all, to make above
working one should add at least one.

[1] https://e2e.ti.com/support/power_management/led_driver/f/192/t/524926
[2] https://www.spinics.net/lists/linux-acpi/msg67125.html

Cc: Tony Makkiel <tony.makkiel@daqri.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-23 20:33:51 +01:00
Dan Carpenter ac57245215 leds: mt6323: Fix an off by one bug in probe
It should be ">= MT6323_MAX_LEDS" instead of ">".  Also "reg" is a u32
so it can't be negative and we can remove the test for negative values.

Fixes: 216ec6cc4c ("leds: Add LED support for MT6323 PMIC")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-23 20:23:57 +01:00
Sean Wang 216ec6cc4c leds: Add LED support for MT6323 PMIC
MT6323 PMIC is a multi-function device that includes LED function.
It allows attaching up to 4 LEDs which can either be on, off or dimmed
and/or blinked with the controller.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-21 20:13:19 +01:00
Rafał Miłecki 7ea79ae86c leds: gpio: use OF variant of LED registering function
In leds-gpio we support LEDs specified in DT so we should use
(devm_)of_led_classdev_register. This allows passing DT node as argument
for use by the LED subsystem.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-08 21:10:02 +01:00
Rafał Miłecki 442c609830 leds: core: add OF variants of LED registering functions
These new functions allow passing an additional device_node argument
that will be internally set for created LED device. Thanks to this LED
core code and triggers will be able to access DT node for reading extra
info.

The easiest solution for achieving this was reworking old functions to
more generic ones & adding simple defines for API compatibility.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-08 21:10:01 +01:00
Michał Kępień 7a3319c1cd dell-led: move driver to drivers/platform/x86/dell-wmi-led.c
The dell-led driver handles a specific WMI GUID present on some Dell
laptops and as such it belongs in the x86 platform driver subsystem.
Source code is moved along with the relevant Kconfig and Makefile
entries, with some minor modifications:

  - Kconfig option is renamed from CONFIG_LEDS_DELL_NETBOOKS to
    CONFIG_DELL_WMI_LED,

  - the X86 Kconfig dependency is removed as the whole
    drivers/platform/x86 menu depends on it, so there is no need to
    duplicate it,

  - the name of the module's source file is removed from the header
    comment to avoid the need to update it in the future.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Tested-by: Alex Hung <alex.hung@canonical.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-06 22:07:09 +01:00
Michał Kępień e5aa482a8a dell-led: remove code related to mic mute LED
With dell_micmute_led_set() moved to drivers/platform/x86/dell-laptop.c,
all remnants of the mic mute LED handling code can be removed from
drivers/leds/dell-led.c, restoring it back to the state it was in before
commit db6d8cc007 ("dell-led: add mic mute led interface").

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Tested-by: Alex Hung <alex.hung@canonical.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-06 22:07:07 +01:00
Michał Kępień 44319ab7e0 platform/x86: dell-laptop: import dell_micmute_led_set() from drivers/leds/dell-led.c
To ensure all users of dell-smbios are in drivers/platform/x86, move the
dell_micmute_led_set() method from drivers/leds/dell-led.c to
drivers/platform/x86/dell-laptop.c.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Tested-by: Alex Hung <alex.hung@canonical.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-06 22:07:04 +01:00
Michał Kępień fa5923cea8 ALSA: hda - use dell_micmute_led_set() instead of dell_app_wmi_led_set()
The dell_app_wmi_led_set() method introduced in commit db6d8cc007
("dell-led: add mic mute led interface") was implemented as an easily
extensible entry point for other modules to set the state of various
LEDs.  However, almost three years later it is still only used to
control the mic mute LED, so it will be replaced with direct calls to
dell_micmute_led_set().

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Tested-by: Alex Hung <alex.hung@canonical.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-06 22:06:59 +01:00
Michał Kępień 6dbea8535d dell-led: remove GUID check from dell_micmute_led_set()
As dell_micmute_led_set() no longer uses the dell_wmi_perform_query()
method, which was removed in commit 0c41a08e13 ("dell-led: use
dell_smbios_send_request() for performing SMBIOS calls"), the
DELL_APP_GUID check is redundant and thus can be safely removed.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Tested-by: Alex Hung <alex.hung@canonical.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-06 22:06:54 +01:00
Paulo Costa 0b88b71c77 leds/trigger/cpu: Add LED trigger for all CPUs aggregated
Currently there is one CPU led trigger per cpu ('cpu0', 'cpu1', ...)

This patch adds a new trigger, 'cpu', with brightness proportional to
the number of active CPUs.

If multiple brightness levels aren't supported on the LED,
it effectively indicates if there is any CPU active.

This is particularly useful on tiny linux boards with more CPU cores than LED pins.

Signed-off-by: Paulo Costa <me@paulo.costa.nom.br>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-03-06 22:06:47 +01:00
Ingo Molnar 4f17722c72 sched/headers: Prepare for new header dependencies before moving code to <linux/sched/loadavg.h>
We are going to split <linux/sched/loadavg.h> out of <linux/sched.h>, which
will have to be picked up from a couple of .c files.

Create a trivial placeholder <linux/sched/topology.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.

Include the new header in the files that are going to need it.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:27 +01:00
Linus Torvalds 545b2820c4 pwm: Changes for v4.11-rc1
This set contains mostly fixes to existing drivers as well as cleanup of
 code that's not been in active use for a while.
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Merge tag 'pwm/for-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "This set contains mostly fixes to existing drivers as well as cleanup
  of code that's not been in active use for a while"

* tag 'pwm/for-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (27 commits)
  acpi: lpss: call pwm_add_table() for BSW PWM device
  pwm: Try to load modules during pwm_get()
  pwm: Don't hold pwm_lookup_lock longer than necessary
  pwm: Make the PWM_POLARITY flag in DTB optional
  pwm: Print error messages with pr_err() instead of pr_debug()
  pwm: imx: Add polarity inversion support to i.MX's PWMv2
  pwm: imx: doc: Update imx-pwm.txt documentation entry
  pwm: imx: Remove redundant i.MX PWMv2 code
  pwm: imx: Provide atomic PWM support for i.MX PWMv2
  pwm: imx: Move PWMv2 wait for fifo slot code to a separate function
  pwm: imx: Move PWMv2 software reset code to a separate function
  pwm: imx: Rewrite v1 code to facilitate switch to atomic PWM
  pwm: imx: Add separate set of PWM ops for v1 and v2
  pwm: imx: Remove ipg clock and enable per clock when required
  pwm: lpss: Add Intel Gemini Lake PCI ID
  pwm: lpss: Do not export board infos for different PWM types
  pwm: lpss: Avoid reconfiguring while UPDATE bit is still enabled
  pwm: lpss: Switch to new atomic API
  pwm: lpss: Allow duty cycle to be 0
  pwm: lpss: Avoid potential overflow of base_unit
  ...
2017-03-01 09:46:02 -08:00
Linus Torvalds 1ec5c1867a This is the bulk of GPIO changes for the v4.11 cycle
Core changes:
 
 - Augment fwnode_get_named_gpiod() to configure the GPIO pin
   immediately after requesting it like all other APIs do.
   This is a treewide change also updating all users.
 
 - Pass a GPIO label down to gpiod_request() from
   fwnode_get_named_gpiod(). This makes debugfs and the userspace
   ABI correctly reflect the current in-kernel consumer of a pin
   taken using this abstraction. This is a treewide change also
   updating all users.
 
 - Rename devm_get_gpiod_from_child() to
   devm_fwnode_get_gpiod_from_child() to reflect the fact that this
   function is operating on a fwnode object. This is a treewide
   change also updating all users.
 
 - Make it possible to take multiple GPIOs in a single hog of device
   tree hogs.
 
 - The refactorings switching GPIO chips to use the .set_config()
   callback using standard pin control properties and providing
   a backend into the pin control subsystem that were also merged
   into the pin control tree naturally appear here too.
 
 Testing instrumentation:
 
 - A whole slew of cleanups and improvements to the mockup GPIO
   driver. We now have an extended userspace test exercising the
   subsystem, and we can inject interrupts etc from userspace
   to fully test the core GPIO functionality.
 
 New drivers:
 
 - New driver for the Cortina Systems Gemini GPIO controller.
 
 - New driver for the Exar XR17V352/354/358 chips.
 
 - New driver for the ACCES PCI-IDIO-16 PCI GPIO card.
 
 Driver changes:
 
 - RCAR: set the irqchip parent device, add fine-grained runtime
   PM support.
 
 - pca953x: support optional RESET control line on the chip.
 
 - DaVinci: cleanups and simplifications. Add support for multiple
   instances.
 
 - .set_multiple() and naming of lines on more or less all of the
   ISA/PCI GPIO controllers.
 
 - mcp23s08: refactored to use regmap as a first step to further
   rewrites and modernizations.
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Merge tag 'gpio-v4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v4.11 cycle

  Core changes:

   - Augment fwnode_get_named_gpiod() to configure the GPIO pin
     immediately after requesting it like all other APIs do. This is a
     treewide change also updating all users.

   - Pass a GPIO label down to gpiod_request() from
     fwnode_get_named_gpiod(). This makes debugfs and the userspace ABI
     correctly reflect the current in-kernel consumer of a pin taken
     using this abstraction. This is a treewide change also updating all
     users.

   - Rename devm_get_gpiod_from_child() to
     devm_fwnode_get_gpiod_from_child() to reflect the fact that this
     function is operating on a fwnode object. This is a treewide change
     also updating all users.

   - Make it possible to take multiple GPIOs in a single hog of device
     tree hogs.

   - The refactorings switching GPIO chips to use the .set_config()
     callback using standard pin control properties and providing a
     backend into the pin control subsystem that were also merged into
     the pin control tree naturally appear here too.

  Testing instrumentation:

   - A whole slew of cleanups and improvements to the mockup GPIO
     driver. We now have an extended userspace test exercising the
     subsystem, and we can inject interrupts etc from userspace to fully
     test the core GPIO functionality.

  New drivers:

   - New driver for the Cortina Systems Gemini GPIO controller.

   - New driver for the Exar XR17V352/354/358 chips.

   - New driver for the ACCES PCI-IDIO-16 PCI GPIO card.

  Driver changes:

   - RCAR: set the irqchip parent device, add fine-grained runtime PM
     support.

   - pca953x: support optional RESET control line on the chip.

   - DaVinci: cleanups and simplifications. Add support for multiple
     instances.

   - .set_multiple() and naming of lines on more or less all of the
     ISA/PCI GPIO controllers.

   - mcp23s08: refactored to use regmap as a first step to further
     rewrites and modernizations"

* tag 'gpio-v4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (61 commits)
  gpio: reintroduce devm_get_gpiod_from_child()
  gpio: pci-idio-16: Fix PCI BAR index
  gpio: pci-idio-16: Fix PCI device ID code
  gpio: mockup: implement event injecting over debugfs
  gpio: mockup: add a dummy irqchip
  gpio: mockup: implement naming the lines
  gpio: mockup: code shrink
  gpio: mockup: readability tweaks
  gpio: Add GPIO support for the ACCES PCI-IDIO-16
  gpio: Add the devm_fwnode_get_index_gpiod_from_child() helper
  gpio: Rename devm_get_gpiod_from_child()
  gpio: mcp23s08: Select REGMAP/REGMAP_I2C to fix build error
  gpio: ws16c48: Add support for GPIO names
  gpio: gpio-mm: Add support for GPIO names
  gpio: 104-idio-16: Add support for GPIO names
  gpio: 104-idi-48: Add support for GPIO names
  gpio: 104-dio-48e: Add support for GPIO names
  gpio: ws16c48: Remove unnecessary driver_data set
  gpio: gpio-mm: Remove unnecessary driver_data set
  gpio: 104-idio-16: Remove unnecessary driver_data set
  ...
2017-02-23 08:46:04 -08:00
Jacek Anaszewski fb3d769173 leds: ledtrig-heartbeat: Make top brightness adjustable
LED class heartbeat trigger allowed only for blinking with max_brightness
value. This patch adds more flexibility by exploiting part of LED core
software blink infrastructure.

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
2017-02-14 22:20:24 +01:00
Boris Brezillon 4b0947974e gpio: Rename devm_get_gpiod_from_child()
Rename devm_get_gpiod_from_child() into
devm_fwnode_get_gpiod_from_child() to reflect the fact that this
function is operating on a fwnode object.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-02-04 21:27:26 +01:00
Hans de Goede 0cb8eb30d4 leds: class: Add new optional brightness_hw_changed attribute
Some LEDs may have their brightness level changed autonomously
(outside of kernel control) by hardware / firmware. This commit
adds support for an optional brightness_hw_changed attribute to
signal such changes to userspace (if a driver can detect them):

What:		/sys/class/leds/<led>/brightness_hw_changed
Date:		January 2017
KernelVersion:	4.11
Description:
		Last hardware set brightness level for this LED. Some LEDs
		may be changed autonomously by hardware/firmware. Only LEDs
		where this happens and the driver can detect this, will
		have this file.

		This file supports poll() to detect when the hardware
		changes the brightness.

		Reading this file will return the last brightness level set
		by the hardware, this may be different from the current
		brightness.

Drivers which want to support this, simply add LED_BRIGHT_HW_CHANGED to
their flags field and call led_classdev_notify_brightness_hw_changed()
with the hardware set brightness when they detect a hardware / firmware
triggered brightness change.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-01-29 19:59:42 +01:00
Arnd Bergmann cbe99c538d leds: ktd2692: avoid harmless maybe-uninitialized warning
gcc gets confused about the control flow in ktd2692_parse_dt(), causing
it to warn about what seems like a potential bug:

drivers/leds/leds-ktd2692.c: In function 'ktd2692_probe':
drivers/leds/leds-ktd2692.c:244:15: error: '*((void *)&led_cfg+8)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/leds/leds-ktd2692.c:225:7: error: 'led_cfg.flash_max_microamp' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/leds/leds-ktd2692.c:232:3: error: 'led_cfg.movie_max_microamp' may be used uninitialized in this function [-Werror=maybe-uninitialized]

The code is fine, and slightly reworking it in an equivalent way lets
gcc figure that out too, which gets rid of the warning.

Fixes: 77e7915b15 ("leds: ktd2692: Add missing of_node_put")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2017-01-26 21:16:38 +01:00
Alexander Stein b2987d7438 gpio: Pass GPIO label down to gpiod_request
Currently all users of fwnode_get_named_gpiod() have no way to
specify a label for the GPIO. So GPIOs listed in debugfs are shown
with label "?". With this change a proper label is used.

Also adjust all users so they can pass a label, properly retrieved
from device tree properties.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-26 09:59:52 +01:00
Andy Shevchenko a264d10ff4 gpiolib: Convert fwnode_get_named_gpiod() to configure GPIO
Make fwnode_get_named_gpiod() consistent with the rest of
gpiod_get() like API, i.e. configure GPIO pin immediately after
request.

Besides obvious clean up it will help to configure pins based
on firmware provided resources.

Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-26 09:59:32 +01:00
Thierry Reding 247bde13b9 leds: pwm: Remove atomic code paths
PWM devices have all been marked as "might sleep" since v4.5. It no
longer makes sense to keep the alternative code paths around because
it is effectively dead code.

Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2017-01-04 09:37:56 +01:00
Thomas Gleixner 73c1b41e63 cpu/hotplug: Cleanup state names
When the state names got added a script was used to add the extra argument
to the calls. The script basically converted the state constant to a
string, but the cleanup to convert these strings into meaningful ones did
not happen.

Replace all the useless strings with 'subsys/xxx/yyy:state' strings which
are used in all the other places already.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Link: http://lkml.kernel.org/r/20161221192112.085444152@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-12-25 10:47:44 +01:00
Tin Huynh 44b3e31d54 leds: pca955x: Add ACPI support
This patch enables ACPI support for leds-pca955x driver.

Signed-off-by: Tin Huynh <tnhuynh@apm.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2016-12-02 09:31:50 +01:00
Javier Martinez Canillas 825fe38a09 leds: netxbig: fix module autoload for OF registration
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.

Export the module alias information using the MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/leds//leds-netxbig.ko | grep alias
alias:          platform:leds-netxbig

After this patch:

$ modinfo drivers/leds//leds-netxbig.ko | grep alias
alias:          platform:leds-netxbig
alias:          of:N*T*Clacie,netxbig-ledsC*
alias:          of:N*T*Clacie,netxbig-leds

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2016-11-30 11:10:27 +01:00
Tin Huynh f26dab9fc7 leds: pca963x: Add ACPI support
This patch enables ACPI support for leds-pca963x driver.

Signed-off-by: Tin Huynh <tnhuynh@apm.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2016-11-30 11:10:09 +01:00
Geliang Tang cee0122de3 leds: leds-cobalt-raq: use builtin_platform_driver
Use builtin_platform_driver() helper to simplify the code.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2016-11-23 16:38:01 +01:00
Jacek Anaszewski 2a4f8114f2 Immutable branch between MFD, ARM and LED due for the v4.10 merge window
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Merge tag 'ib-mfd-arm-leds-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into linux-leds/for-next

Pull PM8XXX namespace cleanup from Lee Jones.

* tag 'ib-mfd-arm-leds-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
  mfd: qcom-pm8xxx: Clean up PM8XXX namespace
2016-11-22 13:52:06 +01:00
Hans de Goede eb1610b4c2 led: core: Fix blink_brightness setting race
All 3 of led_timer_func, led_set_brightness and led_set_software_blink
set blink_brightness. If led_timer_func or led_set_software_blink race
with led_set_brightness they may end up overwriting the new
blink_brightness. The new atomic work_flags does not protect against
this as it just protects the flags and not blink_brightness.

This commit introduces a new new_blink_brightness value which gets
set by led_set_brightness and read by led_timer_func on LED on, fixing
this.

Dealing with the new brightness at LED on time, makes the new
brightness apply sooner, which also fixes a led_set_brightness which
happens while a oneshot blink which ends in LED on is running not
getting applied.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2016-11-22 12:07:05 +01:00
Hans de Goede a9c6ce57ec led: core: Use atomic bit-field for the blink-flags
All the LED_BLINK* flags are accessed read-modify-write from e.g.
led_set_brightness and led_blink_set_oneshot while both
set_brightness_work and the blink_timer may be running.

If these race then the modify step done by one of them may be lost,
switch the LED_BLINK* flags to a new atomic work_flags bit-field
to avoid this race.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2016-11-22 12:07:05 +01:00
Hui Chun Ong 8338eab50f leds: Add user LED driver for NIC78bx device
Add the driver to support User LEDs on PXI Embedded Controller.

Signed-off-by: Hui Chun Ong <hui.chun.ong@ni.com>
Signed-off-by: Brad Mouring <brad.mouring@ni.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2016-11-22 12:07:04 +01:00
Vadim Pasternak dca897e28f leds: verify vendor and change license in mlxcpld driver
Verify that vendor is Mellanox as the first step of initialization.
If it is not - return ENODEV.
Change module license from "GPL v2" to "Dual BSD/GPL".

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2016-11-22 12:07:04 +01:00
Matt Ranostay a8c170b015 leds: pca963x: enable low-power state
Allow chip to enter low power state when no LEDs are being lit or in
blink mode.

Cc: Peter Meerwald <p.meerwald@bct-electronic.com>,
Cc: Ricardo Ribalda <ricardo.ribalda@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2016-11-22 12:07:04 +01:00