Commit graph

845 commits

Author SHA1 Message Date
Linus Torvalds
670c039dee - Stop using LP855X Platform Data to control regulators
- Move PWM8941 WLED driver into Backlight
  - Remove invalid use of IS_ERR_VALUE() macro
  - Remove duplicate check for NULL data before unregistering
  - Export I2C Device ID structure
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Merge tag 'backlight-for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 - Stop using LP855X Platform Data to control regulators
 - Move PWM8941 WLED driver into Backlight
 - Remove invalid use of IS_ERR_VALUE() macro
 - Remove duplicate check for NULL data before unregistering
 - Export I2C Device ID structure

* tag 'backlight-for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: tosa: Export I2C module alias information
  backlight: lp8788_bl: Delete a check before backlight_device_unregister()
  backlight: sky81452: Remove unneeded use of IS_ERR_VALUE() macro
  backlight: pm8941-wled: Move PM8941 WLED driver to backlight
  backlight: lp855x: Use private data for regulator control
2015-09-04 11:40:40 -07:00
Linus Torvalds
ff474e8ca8 powerpc updates for 4.3
- Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask from Benjamin Herrenschmidt
  - EEH fixes for SRIOV from Gavin
  - Introduce rtas_get_sensor_fast() for IRQ handlers from Thomas Huth
  - Use hardware RNG for arch_get_random_seed_* not arch_get_random_* from Paul Mackerras
  - Seccomp filter support from Michael Ellerman
  - opal_cec_reboot2() handling for HMIs & machine checks from Mahesh Salgaonkar
  - Add powerpc timebase as a trace clock source from Naveen N. Rao
  - Misc cleanups in the xmon, signal & SLB code from Anshuman Khandual
  - Add an inline function to update POWER8 HID0 from Gautham R. Shenoy
  - Fix pte_pagesize_index() crash on 4K w/64K hash from Michael Ellerman
  - Drop support for 64K local store on 4K kernels from Michael Ellerman
  - move dma_get_required_mask() from pnv_phb to pci_controller_ops from Andrew Donnellan
  - Initialize distance lookup table from drconf path from Nikunj A Dadhania
  - Enable RTC class support from Vaibhav Jain
  - Disable automatically blocked PCI config from Gavin Shan
  - Add LEDs driver for PowerNV platform from Vasant Hegde
  - Fix endianness issues in the HVSI driver from Laurent Dufour
  - Kexec endian fixes from Samuel Mendoza-Jonas
  - Fix corrupted pdn list from Gavin Shan
  - Fix fenced PHB caused by eeh_slot_error_detail() from Gavin Shan
 
  - Freescale updates from Scott: Highlights include 32-bit memcpy/memset
    optimizations, checksum optimizations, 85xx config fragments and updates,
    device tree updates, e6500 fixes for non-SMP, and misc cleanup and minor
    fixes.
 
  - A ton of cxl updates & fixes:
   - Add explicit precision specifiers from Rasmus Villemoes
   - use more common format specifier from Rasmus Villemoes
   - Destroy cxl_adapter_idr on module_exit from Johannes Thumshirn
   - Destroy afu->contexts_idr on release of an afu from Johannes Thumshirn
   - Compile with -Werror from Daniel Axtens
   - EEH support from Daniel Axtens
   - Plug irq_bitmap getting leaked in cxl_context from Vaibhav Jain
   - Add alternate MMIO error handling from Ian Munsie
   - Allow release of contexts which have been OPENED but not STARTED from Andrew Donnellan
   - Remove use of macro DEFINE_PCI_DEVICE_TABLE from Vaishali Thakkar
   - Release irqs if memory allocation fails from Vaibhav Jain
   - Remove racy attempt to force EEH invocation in reset from Daniel Axtens
   - Fix + cleanup error paths in cxl_dev_context_init from Ian Munsie
   - Fix force unmapping mmaps of contexts allocated through the kernel api from Ian Munsie
   - Set up and enable PSL Timebase from Philippe Bergheaud
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Merge tag 'powerpc-4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask
   from Benjamin Herrenschmidt

 - EEH fixes for SRIOV from Gavin

 - introduce rtas_get_sensor_fast() for IRQ handlers from Thomas Huth

 - use hardware RNG for arch_get_random_seed_* not arch_get_random_*
   from Paul Mackerras

 - seccomp filter support from Michael Ellerman

 - opal_cec_reboot2() handling for HMIs & machine checks from Mahesh
   Salgaonkar

 - add powerpc timebase as a trace clock source from Naveen N.  Rao

 - misc cleanups in the xmon, signal & SLB code from Anshuman Khandual

 - add an inline function to update POWER8 HID0 from Gautham R.  Shenoy

 - fix pte_pagesize_index() crash on 4K w/64K hash from Michael Ellerman

 - drop support for 64K local store on 4K kernels from Michael Ellerman

 - move dma_get_required_mask() from pnv_phb to pci_controller_ops from
   Andrew Donnellan

 - initialize distance lookup table from drconf path from Nikunj A
   Dadhania

 - enable RTC class support from Vaibhav Jain

 - disable automatically blocked PCI config from Gavin Shan

 - add LEDs driver for PowerNV platform from Vasant Hegde

 - fix endianness issues in the HVSI driver from Laurent Dufour

 - kexec endian fixes from Samuel Mendoza-Jonas

 - fix corrupted pdn list from Gavin Shan

 - fix fenced PHB caused by eeh_slot_error_detail() from Gavin Shan

 - Freescale updates from Scott: Highlights include 32-bit memcpy/memset
   optimizations, checksum optimizations, 85xx config fragments and
   updates, device tree updates, e6500 fixes for non-SMP, and misc
   cleanup and minor fixes.

 - a ton of cxl updates & fixes:
    - add explicit precision specifiers from Rasmus Villemoes
    - use more common format specifier from Rasmus Villemoes
    - destroy cxl_adapter_idr on module_exit from Johannes Thumshirn
    - destroy afu->contexts_idr on release of an afu from Johannes
      Thumshirn
    - compile with -Werror from Daniel Axtens
    - EEH support from Daniel Axtens
    - plug irq_bitmap getting leaked in cxl_context from Vaibhav Jain
    - add alternate MMIO error handling from Ian Munsie
    - allow release of contexts which have been OPENED but not STARTED
      from Andrew Donnellan
    - remove use of macro DEFINE_PCI_DEVICE_TABLE from Vaishali Thakkar
    - release irqs if memory allocation fails from Vaibhav Jain
    - remove racy attempt to force EEH invocation in reset from Daniel
      Axtens
    - fix + cleanup error paths in cxl_dev_context_init from Ian Munsie
    - fix force unmapping mmaps of contexts allocated through the kernel
      api from Ian Munsie
    - set up and enable PSL Timebase from Philippe Bergheaud

* tag 'powerpc-4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (140 commits)
  cxl: Set up and enable PSL Timebase
  cxl: Fix force unmapping mmaps of contexts allocated through the kernel api
  cxl: Fix + cleanup error paths in cxl_dev_context_init
  powerpc/eeh: Fix fenced PHB caused by eeh_slot_error_detail()
  powerpc/pseries: Cleanup on pci_dn_reconfig_notifier()
  powerpc/pseries: Fix corrupted pdn list
  powerpc/powernv: Enable LEDS support
  powerpc/iommu: Set default DMA offset in dma_dev_setup
  cxl: Remove racy attempt to force EEH invocation in reset
  cxl: Release irqs if memory allocation fails
  cxl: Remove use of macro DEFINE_PCI_DEVICE_TABLE
  powerpc/powernv: Fix mis-merge of OPAL support for LEDS driver
  powerpc/powernv: Reset HILE before kexec_sequence()
  powerpc/kexec: Reset secondary cpu endianness before kexec
  powerpc/hvsi: Fix endianness issues in the HVSI driver
  leds/powernv: Add driver for PowerNV platform
  powerpc/powernv: Create LED platform device
  powerpc/powernv: Add OPAL interfaces for accessing and modifying system LED states
  powerpc/powernv: Fix the log message when disabling VF
  cxl: Allow release of contexts which have been OPENED but not STARTED
  ...
2015-09-03 16:41:38 -07:00
Linus Torvalds
edc837da4b Besides the changes in MAINTAINERS we have:
- optimizations and improvements to existing LED class drivers
 - improvements to the common LEDs DT documentation
 - modifications of kirkwood-* dts files, to be in sync with patches for
   leds-ns2 driver, that move LEDs mode mapping outside of the driver
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Merge tag 'leds_for_4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED updates from Jacek Anaszewski:
 "In this merge window we'd like to announce a change on the list of LED
  subsystem maintainers - Bryan Wu decided to step back and handed over
  the maintainership to me (Jacek Anaszewski), which entailed an update
  of LED subsystem git tree URL.

  Besides the changes in MAINTAINERS we have:

   - optimizations and improvements to existing LED class drivers

   - improvements to the common LEDs DT documentation

   - modifications of kirkwood-* dts files, to be in sync with patches
     for leds-ns2 driver, that move LEDs mode mapping outside of the
     driver"

* tag 'leds_for_4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: Export OF module alias information in missing drivers
  leds:lp55xx: use the private data instead of updating I2C device platform data
  leds: syscon: Correct check for syscon_node_to_regmap() errors
  leds: leds-fsg: Use devm_led_classdev_register
  MAINTAINERS: Change LED subsystem git tree URL
  leds/led-class: Add missing put_device()
  ARM: Kirkwood: add modes-map property to ns2-leds nodes
  leds: tlc591xx: Remove redundant I2C_FUNC_SMBUS_BYTE_DATA functionality check
  leds: leds-ns2: depends on MACH_ARMADA_370
  leds: leds-ns2: handle can_sleep GPIOs
  leds: leds-ns2: move LED modes mapping outside of the driver
  leds: lp8860: Constify reg_default tables
  leds: Drop owner assignment from i2c_driver
  leds: Allow compile test of LEDS_AAT1290 and LEDS_KTD2692 if !GPIOLIB
  leds: Allow compile test of GPIO consumers if !GPIOLIB
  DT: leds: Improve description of flash LEDs related properties
2015-08-31 17:08:05 -07:00
Javier Martinez Canillas
4d59ed8545 leds: Export OF module alias information in missing drivers
The I2C core always reports the MODALIAS uevent as "i2c:<modalias>"
regardless of the mechanism that was used to register the device
(i.e: OF or board code) and the table that is used later to match
the driver with the device (i.e: I2C id table or OF match table).

So drivers needs to export the I2C id table and this be built into
the module or udev won't have the necessary information to autoload
the needed driver module when the device is added.

But this means that OF-only drivers needs to have both OF and I2C id
tables that have to be kept in sync and also the dev node compatible
manufacturer prefix is stripped when reporting the MODALIAS. Which can
lead to issues if two vendors use the same I2C device name for example.

To avoid the above, the I2C core behavior may be changed in the future
to not require an SPI device table for OF-only drivers and report the
OF module alias. So, it's better to also export the OF table even when
is unused now to prevent breaking module loading when the core changes.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:30 +02:00
Milo Kim
ed13335204 leds:lp55xx: use the private data instead of updating I2C device platform data
Currently, lp55xx_of_populate_pdata() allocates lp55xx_platform_data if
it's null. And it parses the DT and copies values into the
'client->dev.platform_data'. This may have architectural issue.
Platform data is configurable through the DT or I2C board info inside the
platform area. However, lp55xx common driver changes this configuration
when it is loaded. So 'client->dev.platform_data' is not null anymore.
Eventually, the driver initialization is not identical when it's unloaded
and loaded again.
The lp55xx common driver should use the private data, 'lp55xx_chip->pdata'
instead of changing the original platform data.

So, lp55xx_of_populate_pdata() is modified as follows.
* Do not update 'dev->platform_data'. Return the pointer of new allocated
   lp55xx_platform_data. Then the driver points it to private data,
   'lp55xx_chip->pdata'.
* Each lp55xx driver checks the pointer and handles an error case.

Then, original platform data configuration will be kept regardless of
loading or unloading the driver.
The driver allocates the memory and copies them from the DT if it's NULL.
After the driver is loaded again, 'client->dev.platform_data' is same as
initial load, so the driver is initialized identically.

Cc: Toshi Kikuchi <toshik@chromium.org>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:28 +02:00
Bjorn Andersson
991a3f61fa leds: syscon: Correct check for syscon_node_to_regmap() errors
syscon_node_to_regmap() returns a regmap or an ERR_PTR().

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:25 +02:00
Vaishali Thakkar
c2d4af9370 leds: leds-fsg: Use devm_led_classdev_register
Use resource-managed function devm_led_classdev_register instead
of led_classdev_register to make the error-path simpler.

To be compatible with the change, various gotos are replaced with
direct returns and unneeded labels are dropped. Also, remove
fsg_led_remove as it is now redundant.

Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:23 +02:00
Ricardo Ribalda Delgado
e5b5a61fcb leds/led-class: Add missing put_device()
Devices found by class_find_device must be freed with put_device().
Otherwise the reference count will not work properly.

Fixes: a96aa64cb5 ("leds/led-class: Handle LEDs with the same name")
Reported-by: Alan Tull <delicious.quinoa@gmail.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:19 +02:00
Axel Lin
f3a2a097a3 leds: tlc591xx: Remove redundant I2C_FUNC_SMBUS_BYTE_DATA functionality check
This checking is done by regmap_get_i2c_bus() which is called in
devm_regmap_init_i2c().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:14 +02:00
Simon Guinot
259f5ba308 leds: leds-ns2: depends on MACH_ARMADA_370
The leds-ns2 driver is also used by the n090401 board (Seagate NAS
4-Bay), which is based on the Marvell Armada-370 SoC.

Then this patch allows to select the leds-ns2 driver if MACH_ARMADA_370
is enabled. Additionally, this also updates the Kconfig help message.

Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:12 +02:00
Simon Guinot
4b90432dc1 leds: leds-ns2: handle can_sleep GPIOs
On the board n090401 (Seagate NAS 4-Bay), some of the LEDs are handled
by the leds-ns2 driver. This LEDs are connected to an I2C GPIO expander
(PCA95554PW) which means that GPIO access may sleep. This patch makes
leds-ns2 compatible with such GPIOs by using the *_cansleep() variant of
the GPIO functions. As a drawback this functions can't be used safely in
a timer context (with the timer LED trigger for example). To fix this
issue, a workqueue mechanism (copied from the leds-gpio driver) is used.

Note that this patch also updates slightly the ns2_led_sata_store
function. The LED state is now retrieved from cached values instead of
reading the GPIOs previously. This prevents ns2_led_sata_store from
working with a stale LED state (which may happen when a delayed work
is pending).

Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Vincent Donnefort <vdonnefort@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:09 +02:00
Vincent Donnefort
f7fafd083c leds: leds-ns2: move LED modes mapping outside of the driver
On the board n090401 (Seagate NAS 4-Bay), the LED mode mapping (GPIO
values to LED mode) is different from the one used on other boards
supported by the leds-ns2 driver.

With this patch the hardcoded mapping is removed from leds-ns2. Now,
it must be defined either in the platform data (if an old-fashion board
setup file is used) or in the DT node. In order to allow the later, this
patch also introduces a modes-map property for the leds-ns2 DT binding.

Signed-off-by: Vincent Donnefort <vdonnefort@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:06 +02:00
Axel Lin
de88e71a91 leds: lp8860: Constify reg_default tables
These reg_default tables are not modified after initialized, so make them
const.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:04 +02:00
Krzysztof Kozlowski
44ab901f91 leds: Drop owner assignment from i2c_driver
i2c_driver does not need to set an owner because i2c_register_driver()
will set it.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:02 +02:00
Geert Uytterhoeven
6e3956cd53 leds: Allow compile test of LEDS_AAT1290 and LEDS_KTD2692 if !GPIOLIB
The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.

If COMPILE_TEST is enabled, relax the dependency on GPIOLIB for the
recently introduced symbols LEDS_AAT1290 and LEDS_KTD2692.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:05:59 +02:00
Geert Uytterhoeven
8232274195 leds: Allow compile test of GPIO consumers if !GPIOLIB
The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.

Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where
appropriate.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:05:57 +02:00
Bjorn Andersson
7ddbc2423c backlight: pm8941-wled: Move PM8941 WLED driver to backlight
The Qualcomm PM8941 WLED block is used for backlight and should therefor
be in the backlight framework and not in the LED framework. This moves
the driver and adapts to the backlight api instead.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Tested-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-08-25 08:41:56 +01:00
Michael Ellerman
5d53be7d8c powerpc/powernv: Fix mis-merge of OPAL support for LEDS driver
When I merged the OPAL support for the powernv LEDS driver I missed a
hunk.

This is slightly modified from the original patch, as the original added
code to opal-api.h which is not in the skiboot version, which is
discouraged.

Instead those values are moved into the driver, which is the only place
they are used.

Fixes: 8a8d91817a ("powerpc/powernv: Add OPAL interfaces for accessing and modifying system LED states")
Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-08-22 21:09:12 +10:00
Vasant Hegde
84ad6e5cd3 leds/powernv: Add driver for PowerNV platform
This patch implements LED driver for PowerNV platform using the existing
generic LED class framework.

PowerNV platform has below type of LEDs:
  - System attention
      Indicates there is a problem with the system that needs attention.
  - Identify
      Helps the user locate/identify a particular FRU or resource in the
      system.
  - Fault
      Indicates there is a problem with the FRU or resource at the
      location with which the indicator is associated.

We register classdev structures for all individual LEDs detected on the
system through LED specific device tree nodes. Device tree nodes specify
what all kind of LEDs present on the same location code. It registers
LED classdev structure for each of them.

All the system LEDs can be found in the same regular path /sys/class/leds/.
We don't use LED colors. We use LED node and led-types property to form
LED classdev. Our LEDs have names in this format.

        <location_code>:<attention|identify|fault>

Any positive brightness value would turn on the LED and a zero value would
turn off the LED. The driver will return LED_FULL (255) for any turned on
LED and LED_OFF (0) for any turned off LED.

The platform level implementation of LED get and set state has been
achieved through OPAL calls. These calls are made available for the
driver by exporting from architecture specific codes.

Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Acked-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Tested-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-08-20 18:19:07 +10:00
Krzysztof Kozlowski
61b305cd2a drivers: max77693: Move state container to common header
This prepares for merging some of the drivers between max77693 and
max77843 so the child MFD driver can be attached to any parent MFD main
driver.

Move the state container to common header file. Additionally add
consistent 'i2c' prefixes to its members (of 'struct i2c_client' type).

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 21:39:30 +01:00
Linus Torvalds
13d45f79a2 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED subsystem updates from Bryan Wu:
 "In this cycle, we finished to merge patches for LED Flash class
  driver.

  Other than that we have some bug fixes and new drivers for LED
  controllers"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (33 commits)
  leds:lp55xx: fix firmware loading error
  leds: fix max77693-led build errors
  leds: fix aat1290 build errors
  leds: aat1290: pass flags parameter to devm_gpiod_get
  leds: ktd2692: pass flags parameter to devm_gpiod_get
  drivers/leds: don't use module_init in non-modular leds-cobalt-raq.c
  leds: aat1290: add support for V4L2 Flash sub-device
  DT: aat1290: Document handling external strobe sources
  leds: max77693: add support for V4L2 Flash sub-device
  media: Add registration helpers for V4L2 flash sub-devices
  v4l: async: Add a pointer to of_node to struct v4l2_subdev, match it
  Documentation: leds: Add description of v4l2-flash sub-device
  leds: add BCM6358 LED driver
  leds: add DT binding for BCM6358 LED controller
  leds: fix brightness changing when software blinking is active
  Documentation: leds-lp5523: describe master fader attributes
  leds: lp5523: add master_fader support
  leds: leds-gpio: Allow compile test if !GPIOLIB
  leds: leds-gpio: Add missing #include <linux/of.h>
  gpiolib: Add missing dummies for the unified device properties interface
  ...
2015-07-01 19:09:11 -07:00
Linus Torvalds
5c3950970b Power management and ACPI fixes for v4.2-rc1
- Fix a recently added memory leak in an error path in the ACPI
    resources management code (Dan Carpenter).
 
  - Fix a build warning triggered by an ACPI video header function
    that should be static inline (Borislav Petkov).
 
  - Change names of helper function converting struct fwnode_handle
    pointers to either struct device_node or struct acpi_device
    pointers so they don't conflict with local variable names
    (Alexander Sverdlin).
 
  - Make the hibernate core re-enable nonboot CPUs on failures to
    disable them as expected (Vitaly Kuznetsov).
 
  - Increase the default timeout of the device suspend watchdog to
    prevent it from triggering too early on some systems (Takashi Iwai).
 
  - Prevent the cpuidle powernv driver from registering idle
    states with CPUIDLE_FLAG_TIMER_STOP set if CONFIG_TICK_ONESHOT
    is unset which leads to boot hangs (Preeti U Murthy).
 
 /
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Merge tag 'pm+acpi-4.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "These are fixes that didn't make it to the previous PM+ACPI pull
  request or are fixing issues introduced by it.

  Specifics:

   - Fix a recently added memory leak in an error path in the ACPI
     resources management code (Dan Carpenter)

   - Fix a build warning triggered by an ACPI video header function that
     should be static inline (Borislav Petkov)

   - Change names of helper function converting struct fwnode_handle
     pointers to either struct device_node or struct acpi_device
     pointers so they don't conflict with local variable names
     (Alexander Sverdlin)

   - Make the hibernate core re-enable nonboot CPUs on failures to
     disable them as expected (Vitaly Kuznetsov)

   - Increase the default timeout of the device suspend watchdog to
     prevent it from triggering too early on some systems (Takashi Iwai)

   - Prevent the cpuidle powernv driver from registering idle states
     with CPUIDLE_FLAG_TIMER_STOP set if CONFIG_TICK_ONESHOT is unset
     which leads to boot hangs (Preeti U Murthy)"

* tag 'pm+acpi-4.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  tick/idle/powerpc: Do not register idle states with CPUIDLE_FLAG_TIMER_STOP set in periodic mode
  PM / sleep: Increase default DPM watchdog timeout to 60
  PM / hibernate: re-enable nonboot cpus on disable_nonboot_cpus() failure
  ACPI / OF: Rename of_node() and acpi_node() to to_of_node() and to_acpi_node()
  ACPI / video: Inline acpi_video_set_dmi_backlight_type
  ACPI / resources: free memory on error in add_region_before()
2015-07-01 14:17:44 -07:00
Milo Kim
b67893206f leds:lp55xx: fix firmware loading error
LP55xx driver uses not firmware file but raw data to load program through
the firmware interface.(Documents/leds/leds-lp55xx.txt)

  For example, here is how to run blinking green channel pattern.
  (The second engine is seleted and MUX is mapped to 'RGB' mode)
  echo 2 > /sys/bus/i2c/devices/xxxx/select_engine
  echo "RGB" > /sys/bus/i2c/devices/xxxx/engine_mux
  echo 1 > /sys/class/firmware/lp5562/loading
  echo "4000600040FF6000" > /sys/class/firmware/lp5562/data
  echo 0 > /sys/class/firmware/lp5562/loading
  echo 1 > /sys/bus/i2c/devices/xxxx/run_engine

However, '/sys/class/firmware/<device name>' is not created after the
firmware loader user helper was introduced.
This feature is used in the case below.

  As soon as the firmware download is requested by the driver, firmware
  class subsystem tries to find the binary file.
  If it gets failed, then it just falls back to user helper to load
  raw data manually. Here, you can see the device file under
  /sys/class/firmware/.

To make it happen, LP55xx driver requires two configurations.

  1. Enable CONFIG_FW_LOADER_USER_HELPER_FALLBACK in Kconfig
  2. Set option, 'FW_OPT_USERHELPER' on requesting the firmware data.
     It means the second option should be 'false' in
     request_firmware_nowait().
     This option enables to load firmware data manually by calling
     fw_load_from_user_helper().

Cc: linux-leds@vger.kernel.org
Signed-off-by: Milo Kim <milo.kim@ti.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-06-29 10:10:57 -07:00
Jacek Anaszewski
10c19c9eb2 leds: fix max77693-led build errors
Fix build errors when LEDS_MAX77693=y and V4L2_FLASH_LED_CLASS=m
by restricting LEDS_MAX77693 to =m if V4L2_FLASH_LED_CLASS=m.

drivers/leds/leds-max77693.c:1062: undefined reference to `v4l2_flash_release'
drivers/leds/leds-max77693.c:1068: undefined reference to `v4l2_flash_release'
drivers/built-in.o: In function `max77693_register_led':
drivers/leds/leds-max77693.c:968: undefined reference to `v4l2_flash_init'
drivers/built-in.o: In function `max77693_led_probe':
drivers/leds/leds-max77693.c:1048: undefined reference to `v4l2_flash_release'

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-06-29 10:09:12 -07:00
Randy Dunlap
58d1809b9d leds: fix aat1290 build errors
Fix build errors when LEDS_AAT1290=y and V4L2_FLASH_LED_CLASS=m
by restricting LEDS_AAT1290 to =m if V4L2_FLASH_LED_CLASS=m.

drivers/built-in.o: In function `aat1290_led_remove':
leds-aat1290.c:(.text+0xe5d77): undefined reference to `v4l2_flash_release'
drivers/built-in.o: In function `aat1290_led_probe':
leds-aat1290.c:(.text+0xe6494): undefined reference to `v4l2_flash_init'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-06-29 10:07:45 -07:00
Linus Torvalds
f5dcb68086 ARM: SoC: driver updates for v4.2
Some of these are for drivers/soc, where we're now putting
 SoC-specific drivers these days. Some are for other driver subsystems
 where we have received acks from the appropriate maintainers.
 
 Some highlights:
 
 - simple-mfd: document DT bindings and misc updates
 - migrate mach-berlin to simple-mfd for clock, pinctrl and reset
 - memory: support for Tegra132 SoC
 - memory: introduce tegra EMC driver for scaling memory frequency
 - misc. updates for ARM CCI and CCN busses
 
  Conflicts:
 	arch/arm64/boot/dts/arm/juno-motherboard.dtsi
 
  Trivial add/add conflict with our dt branch.
  Resolution: take both sides.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Kevin Hilman:
 "Some of these are for drivers/soc, where we're now putting
  SoC-specific drivers these days.  Some are for other driver subsystems
  where we have received acks from the appropriate maintainers.

  Some highlights:

   - simple-mfd: document DT bindings and misc updates
   - migrate mach-berlin to simple-mfd for clock, pinctrl and reset
   - memory: support for Tegra132 SoC
   - memory: introduce tegra EMC driver for scaling memory frequency
   - misc. updates for ARM CCI and CCN busses"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (48 commits)
  drivers: soc: sunxi: Introduce SoC driver to map SRAMs
  arm-cci: Add aliases for PMU events
  arm-cci: Add CCI-500 PMU support
  arm-cci: Sanitise CCI400 PMU driver specific code
  arm-cci: Abstract handling for CCI events
  arm-cci: Abstract out the PMU counter details
  arm-cci: Cleanup PMU driver code
  arm-cci: Do not enable CCI-400 PMU by default
  firmware: qcom: scm: Add HDCP Support
  ARM: berlin: add an ADC node for the BG2Q
  ARM: berlin: remove useless chip and system ctrl compatibles
  clk: berlin: drop direct of_iomap of nodes reg property
  ARM: berlin: move BG2Q clock node
  ARM: berlin: move BG2CD clock node
  ARM: berlin: move BG2 clock node
  clk: berlin: prepare simple-mfd conversion
  pinctrl: berlin: drop SoC stub provided regmap
  ARM: berlin: move pinctrl to simple-mfd nodes
  pinctrl: berlin: prepare to use regmap provided by syscon
  reset: berlin: drop arch_initcall initialization
  ...
2015-06-26 11:54:29 -07:00
Rafael J. Wysocki
132c242d95 Merge branches 'acpi-video', 'device-properties', 'pm-sleep' and 'pm-cpuidle'
* acpi-video:
  ACPI / video: Inline acpi_video_set_dmi_backlight_type

* device-properties:
  ACPI / OF: Rename of_node() and acpi_node() to to_of_node() and to_acpi_node()

* pm-sleep:
  PM / sleep: Increase default DPM watchdog timeout to 60
  PM / hibernate: re-enable nonboot cpus on disable_nonboot_cpus() failure

* pm-cpuidle:
  tick/idle/powerpc: Do not register idle states with CPUIDLE_FLAG_TIMER_STOP set in periodic mode
2015-06-26 03:30:37 +02:00
Linus Torvalds
14738e0331 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input subsystem updates from Dmitry Torokhov:
 "Thanks to Samuel Thibault input device (keyboard) LEDs are no longer
  hardwired within the input core but use LED subsystem and so allow use
  of different triggers; Hans de Goede did a large update for the ALPS
  touchpad driver; we have new TI drv2665 haptics driver and DA9063
  OnKey driver, and host of other drivers got various fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (55 commits)
  Input: pixcir_i2c_ts - fix receive error
  MAINTAINERS: remove non existent input mt git tree
  Input: improve usage of gpiod API
  tty/vt/keyboard: define LED triggers for VT keyboard lock states
  tty/vt/keyboard: define LED triggers for VT LED states
  Input: export LEDs as class devices in sysfs
  Input: cyttsp4 - use swap() in cyttsp4_get_touch()
  Input: goodix - do not explicitly set evbits in input device
  Input: goodix - export id and version read from device
  Input: goodix - fix variable length array warning
  Input: goodix - fix alignment issues
  Input: add OnKey driver for DA9063 MFD part
  Input: elan_i2c - add product IDs FW names
  Input: elan_i2c - add support for multi IC type and iap format
  Input: focaltech - report finger width to userspace
  tty: remove platform_sysrq_reset_seq
  Input: synaptics_i2c - use proper boolean values
  Input: psmouse - use true instead of 1 for boolean values
  Input: cyapa - fix a few typos in comments
  Input: stmpe-ts - enforce device tree only mode
  ...
2015-06-24 19:56:58 -07:00
Alexander Sverdlin
c181fb3e72 ACPI / OF: Rename of_node() and acpi_node() to to_of_node() and to_acpi_node()
Commit 8a0662d9 introduced of_node and acpi_node symbols in global namespace
but there were already ~63 of_node local variables or function parameters
(no single acpi_node though, but anyway).

After debugging undefined but used of_node local varible (which turned out
to reference static function of_node() instead) it became clear that the names
for the functions are too short and too generic for global scope.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-06-24 20:03:10 +02:00
Uwe Kleine-König
8a687719d0 leds: aat1290: pass flags parameter to devm_gpiod_get
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>
2015-06-22 13:57:24 -07:00
Uwe Kleine-König
5e324ebf01 leds: ktd2692: pass flags parameter to devm_gpiod_get
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>
2015-06-22 13:57:16 -07:00
Paul Gortmaker
b83fae0c0c drivers/leds: don't use module_init in non-modular leds-cobalt-raq.c
This file is built for a bool Kconfig variable, and hence this
code is either present or absent.  It currently can never be
modular, so using module_init as an alias for __initcall can be
somewhat misleading.

Fix this up now, so that we can relocate module_init from
init.h into module.h in the future.  If we don't do this, we'd
have to add module.h to obviously non-modular code, and that
would be a worse thing.

Note that direct use of __initcall is discouraged, vs. one
of the priority categorized subgroups.  As __initcall gets
mapped onto device_initcall, our use of device_initcall
directly in this change means that the runtime impact is
zero -- it will remain at level 6 in initcall ordering.

And since it can't be modular, we remove all the __exitcall
stuff related to module_exit() -- it is dead code that won't
ever be executed.

Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-06-22 13:57:09 -07:00
Jacek Anaszewski
ac69b9038f leds: aat1290: add support for V4L2 Flash sub-device
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>
2015-06-22 13:56:46 -07:00
Jacek Anaszewski
0b380186a5 leds: max77693: add support for V4L2 Flash sub-device
Add support for V4L2 Flash sub-device to the max77693 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>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-06-22 13:55:17 -07:00
Samuel Thibault
f60c8ba77d Input: export LEDs as class devices in sysfs
This change creates a new input handler called "leds" that exports LEDs on input
devices as standard LED class devices in sysfs and allows controlling their
state via sysfs or via any of the standard LED triggers. This allows to
re-purpose and reassign LDEs on the keyboards to represent states other
than the standard keyboard states (CapsLock, NumLock, etc).

The old API of controlling input LEDs by writing into /dev/input/eventX
devices is still present and will take precedence over accessing via LEDs
subsystem (i.e. it may override state set by a trigger). If input device is
"grabbed" then requests coming through LED subsystem will be ignored.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-06-11 18:18:11 -07:00
Álvaro Fernández Rojas
589fca16c1 leds: add BCM6358 LED driver
This adds support for the LED controller on Broadcom's BCM6358.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-25 13:26:48 -07:00
Stas Sergeev
76931edd54 leds: fix brightness changing when software blinking is active
The following sequence:
echo timer >/sys/class/leds/<name>/trigger
echo 1 >/sys/class/leds/<name>/brightness
should change the ON brightness for blinking.
The function led_set_brightness() was mistakenly initiating the
delayed blink stop procedure, which resulted in no blinking with
the timer trigger still active.

This patch fixes the problem by changing led_set_brightness()
to not initiate the delayed blink stop when brightness is not 0.

CC: Richard Purdie <rpurdie@rpsys.net>
CC: Kyungmin Park <kyungmin.park@samsung.com>
CC: linux-leds@vger.kernel.org
CC: linux-kernel@vger.kernel.org

Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Stas Sergeev <stsp@users.sourceforge.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-25 13:26:47 -07:00
Toshi Kikuchi
52da81eafa leds: lp5523: add master_fader support
This patch introduces 4 new attributes:
  master_fader_leds
  master_fader1
  master_fader2
  master_fader3

Fo example, to map channel 0,6 to master_fader1,
map channel 1,7 to master_fader2,
map channel 2,8 to master_fader3, and
map channel 3,4,5 to none

  echo "123000123" > master_fader_leds

A different factor can be set to each master_fader:

  echo 255 > master_fader1
  echo 100 > master_fader2
  echo 0 > master_fader3

Signed-off-by: Toshi Kikuchi <toshik@chromium.org>
Acked-by: Milo Kim <milo.kim@ti.com>
Tested-by: Milo Kim <milo.kim@ti.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-25 13:26:46 -07:00
Geert Uytterhoeven
9ab1963d83 leds: leds-gpio: Allow compile test if !GPIOLIB
The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.

Relax the dependency of LEDS_GPIO on GPIOLIB if COMPILE_TEST is
enabled.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-25 13:26:46 -07:00
Geert Uytterhoeven
403097f720 leds: leds-gpio: Add missing #include <linux/of.h>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-25 13:26:45 -07:00
Ingi Kim
b7da8c5c72 leds: Add ktd2692 flash LED driver
This patch adds a driver to support the ktd2692 flash LEDs.
ktd2692 can control flash current by ExpressWire interface.

Signed-off-by: Ingi Kim <ingi2.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-25 13:26:44 -07:00
Grygorii Strashko
084609bf72 leds / PM: fix hibernation on arm when gpio-led used with CPU led trigger
Setting a dev_pm_ops suspend/resume pair of callbacks but not a set of
hibernation callbacks means those pm functions will not be
called upon hibernation - that leads to system crash on ARM during
freezing if gpio-led is used in combination with CPU led trigger.
It may happen after freeze_noirq stage (GPIO is suspended)
and before syscore_suspend stage (CPU led trigger is suspended)
- usually when disable_nonboot_cpus() is called.

Log:
  PM: noirq freeze of devices complete after 1.425 msecs
  Disabling non-boot CPUs ...
    ^ system may crash or stuck here with message (TI AM572x)

  WARNING: CPU: 0 PID: 3100 at drivers/bus/omap_l3_noc.c:148 l3_interrupt_handler+0x22c/0x370()
  44000000.ocp:L3 Custom Error: MASTER MPU TARGET L4_PER1_P3 (Idle): Data Access in Supervisor mode during Functional access

  CPU1: shutdown
    ^ or here

Fix this by using SIMPLE_DEV_PM_OPS, which appropriately
assigns the suspend and hibernation callbacks and move
led_suspend/led_resume under CONFIG_PM_SLEEP to avoid
build warnings.

Fixes: 73e1ab41a8 (leds: Convert led class driver from legacy pm ops to dev_pm_ops)
Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: 3.11+ <stable@vger.kernel.org> # 3.11+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-05-12 23:58:24 +02:00
Linus Walleij
a917d4b44a leds: syscon: instantiate from platform device
Currently syscon LEDs will traverse the device tree looking for syscon devices
and if found, traverse any subnodes of these to identify matching children
and from there instantiate LED class devices.

This is not a good use of the Linux device model. Instead we have converted the
device trees to add the "simple-mfd" property to the MFD nexi spawning syscon
LEDs so that these will appear as platform devices in the system and we can
use the proper device probing mechanism.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-11 08:55:03 +02:00
Álvaro Fernández Rojas
fd7b025a23 leds: add BCM6328 LED driver
This adds support for the LED controller on Broadcom's BCM6328.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-04 11:22:28 -07:00
Jacek Anaszewski
49c34b8e0f leds: Add driver for AAT1290 flash LED controller
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>
2015-05-04 11:21:16 -07:00
Jacek Anaszewski
a43f6a86ad leds: Add support for max77693 mfd flash cell
This patch adds led-flash support to Maxim max77693 chipset.
A device can be exposed to user space through LED subsystem
sysfs interface. Device supports up to two leds which can
work in flash and torch mode. The leds can be triggered
externally or by software.

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-04 11:18:48 -07:00
Jacek Anaszewski
20f56758b0 leds: unify the location of led-trigger API
Part of led-trigger API was in the private drivers/leds/leds.h header.
Move it to the include/linux/leds.h header to unify the API location
and announce it as public. It has been already exported from
led-triggers.c with EXPORT_SYMBOL_GPL macro. The no-op definitions are
changed from macros to inline to match the style of the surrounding code.

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-04 11:05:55 -07:00
Jacek Anaszewski
0e14e0bfe8 leds: gpio: Fix error handling for led name null pointer case
Make sure that already registered LEDs will be torn down properly
if the name of the next LED to create is unavailable.

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-04 11:05:55 -07:00
Sebastian Hesselbarth
65c6b7e3ab leds: gpio: Fix device teardown on probe deferral
In gpio_leds_create(), when devm_get_gpiod_from_child() fails with
-EPROBE_DEFER on the second gpio led to be created, the first already
registered led is not torn down properly. This causes create_gpio_led()
to fail for the first led on re-probe().

Fix this misbehaviour by incrementing num_leds only if all
potentially failing calls completed successfully.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-04 11:05:54 -07:00
Andrew Lunn
e370d010a5 leds: tlc591xx: Driver for the TI 8/16 Channel i2c LED driver
The TLC59116 is an I2C bus controlled 16-channel LED driver.  The
TLC59108 is an I2C bus controlled 8-channel LED driver, which is very
similar to the TLC59116. Each LED output has its own 8-bit
fixed-frequency PWM controller to control the brightness of the LED.
The LEDs can also be fixed off and on, making them suitable for use as
GPOs.

This is based on a driver from Belkin, but has been extensively
rewritten and extended to support both 08 and 16 versions.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Imre Kaloz <kaloz@openwrt.org>
Cc: Matthew.Fatheree@belkin.com
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-05-04 11:05:54 -07:00