Make of_get_named_gpio_flags propagate any error it receives from
of_parse_phandle_with_args instead of inconditionally returning -EINVAL.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This adds a flags field to the gpio specifier for Samsung. I didn't
want to add yet another field in the already quite long specifier, so
I decided to compress it together with the Pull Up/Down settings instead.
This is needed to, for example, have a gpio-keys input that is active low.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The Arizona class devices provide some GPIOs for use in the system. This
driver provides support for these via gpiolib. Currently interrupts are
not supported, normally the GPIOs are outputs only.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
[Fold in WM5110 support patch]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch helps mapping with gpio_to_irq for the GPIOs that are irq enabled.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Tested-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Since LPC32xx is now switched over to devicetree based GPIO, the unused
lpc32xx_gpio_init() can be removed.
Further, the driver title changed since it referred to the wrong file.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This has no practical impact at present since we don't support device tree
so any user must have set an irq_base but this will in future allow a
transition to device tree with minimal invasiveness.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add a driver to use GPIO pins available on several AMD south bridges
(currently only AMD 8111 is supported).
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Should be 'exynos5_xxx' instead of 'exonys5_xxx'.
It happened at the commit 30b842889e ("Merge tag 'soc2' of
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc")
during v3.5 merge window.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
[ My bad - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull MIPS updates from Ralf Baechle:
"The whole series has been sitting in -next for quite a while with no
complaints. The last change to the series was before the weekend the
removal of an SPI patch which Grant - even though previously acked by
himself - appeared to raise objections. So I removed it until the
situation is clarified. Other than that all the patches have the acks
from their respective maintainers, all MIPS and x86 defconfigs are
building fine and I'm not aware of any problems introduced by this
series.
Among the key features for this patch series is a sizable patchset for
Lantiq which among other things introduces support for Lantiq's
flagship product, the FALCON SOC. It also means that the opensource
developers behind this patchset have overtaken Lantiq's competing
inhouse development team that was working behind closed doors.
Less noteworthy the ath79 patchset which adds support for a few more
chip variants, cleanups and fixes. Finally the usual dose of tweaking
of generic code."
Fix up trivial conflicts in arch/mips/lantiq/xway/gpio_{ebu,stp}.c where
printk spelling fixes clashed with file move and eventual removal of the
printk.
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (81 commits)
MIPS: lantiq: remove orphaned code
MIPS: Remove all -Wall and almost all -Werror usage from arch/mips.
MIPS: lantiq: implement support for FALCON soc
MTD: MIPS: lantiq: verify that the NOR interface is available on falcon soc
MTD: MIPS: lantiq: implement OF support
watchdog: MIPS: lantiq: implement OF support and minor fixes
SERIAL: MIPS: lantiq: implement OF support
GPIO: MIPS: lantiq: convert gpio-stp-xway to OF
GPIO: MIPS: lantiq: convert gpio-mm-lantiq to OF and of_mm_gpio
GPIO: MIPS: lantiq: move gpio-stp and gpio-ebu to the subsystem folder
MIPS: pci: convert lantiq driver to OF
MIPS: lantiq: convert dma to platform driver
MIPS: lantiq: implement support for clkdev api
MIPS: lantiq: drop ltq_gpio_request() and gpio_to_irq()
OF: MIPS: lantiq: implement irq_domain support
OF: MIPS: lantiq: implement OF support
MIPS: lantiq: drop mips_machine support
OF: PCI: const usage needed by MIPS
MIPS: Cavium: Remove smp_reserve_lock.
MIPS: Move cache setup to setup_arch().
...
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Merge tag 'mfd-3.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
Pull MFD changes from Samuel Ortiz:
"Besides the usual cleanups, this one brings:
* Support for 5 new chipsets: Intel's ICH LPC and SCH Centerton,
ST-E's STAX211, Samsung's MAX77693 and TI's LM3533.
* Device tree support for the twl6040, tps65910, da9502 and ab8500
drivers.
* Fairly big tps56910, ab8500 and db8500 updates.
* i2c support for mc13xxx.
* Our regular update for the wm8xxx driver from Mark."
Fix up various conflicts with other trees, largely due to ab5500 removal
etc.
* tag 'mfd-3.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (106 commits)
mfd: Fix build break of max77693 by adding REGMAP_I2C option
mfd: Fix twl6040 build failure
mfd: Fix max77693 build failure
mfd: ab8500-core should depend on MFD_DB8500_PRCMU
gpio: tps65910: dt: process gpio specific device node info
mfd: Remove the parsing of dt info for tps65910 gpio
mfd: Save device node parsed platform data for tps65910 sub devices
mfd: Add r_select to lm3533 platform data
gpio: Add Intel Centerton support to gpio-sch
mfd: Emulate active low IRQs as well as active high IRQs for wm831x
mfd: Mark two lm3533 zone registers as volatile
mfd: Fix return type of lm533 attribute is_visible
mfd: Enable Device Tree support in the ab8500-pwm driver
mfd: Enable Device Tree support in the ab8500-sysctrl driver
mfd: Add support for Device Tree to twl6040
mfd: Register the twl6040 child for the ASoC codec unconditionally
mfd: Allocate twl6040 IRQ numbers dynamically
mfd: twl6040 code cleanup in interrupt initialization part
mfd: Enable ab8500-gpadc driver for Device Tree
mfd: Prevent unassigned pointer from being used in ab8500-gpadc driver
...
This adds support for the spear13xx platform, which has first been under
review a long time ago and finally been completed after generic spear
work has gone into the clock, dt and pinctrl branches.
Also a number of updates for the samsung socs are part of this branch.
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Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc: soc specific changes (part 2) from Olof Johansson:
"This adds support for the spear13xx platform, which has first been
under review a long time ago and finally been completed after generic
spear work has gone into the clock, dt and pinctrl branches.
Also a number of updates for the samsung socs are part of this branch."
Fix up trivial conflicts in drivers/gpio/gpio-samsung.c that look much
worse than they are: the exonys5 init code was refactored in commit
fd454997d6 ("gpio: samsung: refactor gpiolib init for exynos4/5"), and
then commit f10590c983 ("ARM: EXYNOS: add GPC4 bank instance") added a
new gpio chip define and did tiny updates to the init code.
So the conflict diff looks like hell, but it's actually a fairly simple
change.
* tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (34 commits)
ARM: exynos: fix building with CONFIG_OF disabled
ARM: EXYNOS: Add AUXDATA for i2c controllers
ARM: dts: Update device tree source files for EXYNOS5250
ARM: EXYNOS: Add device tree support for interrupt combiner
ARM: EXYNOS: Add irq_domain support for interrupt combiner
ARM: EXYNOS: Remove a new bus_type instance for EXYNOS5
ARM: EXYNOS: update irqs for EXYNOS5250 SoC
ARM: EXYNOS: Add pre-divider and fout mux clocks for bpll and mpll
ARM: EXYNOS: add GPC4 bank instance
ARM: EXYNOS: Redefine IRQ_MCT_L0,1 definition
ARM: EXYNOS: Modify the GIC physical address for static io-mapping
ARM: EXYNOS: Add watchdog timer clock instance
pinctrl: SPEAr1310: Fix pin numbers for clcd_high_res
SPEAr: Update MAINTAINERS and Documentation
SPEAr13xx: Add defconfig
SPEAr13xx: Add compilation support
SPEAr13xx: Add dts and dtsi files
pinctrl: Add SPEAr13xx pinctrl drivers
pinctrl: SPEAr: Create macro for declaring GPIO PINS
SPEAr13xx: Add common clock framework support
...
These continue the device tree work from part 1, this set is for the
tegra, mxs and imx platforms, all of which have dependencies on clock
or pinctrl changes submitted earlier.
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc device tree conversions (part 2) from Olof Johansson:
"These continue the device tree work from part 1, this set is for the
tegra, mxs and imx platforms, all of which have dependencies on clock
or pinctrl changes submitted earlier."
Fix up trivial conflicts due to nearby changes in
drivers/{gpio/gpio,i2c/busses/i2c}-mxs.c
* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (73 commits)
ARM: dt: tegra: invert status=disable vs status=okay
ARM: dt: tegra: consistent basic property ordering
ARM: dt: tegra: sort nodes based on bus order
ARM: dt: tegra: remove duplicate device_type property
ARM: dt: tegra: consistenly use lower-case for hex constants
ARM: dt: tegra: format regs properties consistently
ARM: dt: tegra: gpio comment cleanup
ARM: dt: tegra: remove unnecessary unit addresses
ARM: dt: tegra: whitespace cleanup
ARM: dt: tegra cardhu: fix typo in SDHCI node name
ARM: dt: tegra: cardhu: register core regulator tps62361
ARM: dt: tegra30.dtsi: Add SMMU node
ARM: dt: tegra20.dtsi: Add GART node
ARM: dt: tegra30.dtsi: Add Memory Controller(MC) nodes
ARM: dt: tegra20.dtsi: Add Memory Controller(MC) nodes
ARM: dt: tegra: Add device tree support for AHB
ARM: dts: enable audio support for imx28-evk
ARM: dts: enable i2c device for imx28-evk
i2c: mxs: add device tree probe support
ARM: dts: enable mmc for imx28-evk
...
This is a follow-up to ae79c1904 "[PATCH v2] Add support for TCA6424"
merged in the v3.5 merge window. It fixes comments made when the
patch was merged.
- Use 3 byte transfers instead of two separate transfers (2+1 byte)
- An unnecessary cast removed
Signed-off-by: Andreas Schallenberg <Andreas.Schallenberg@3alitytechnica.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Lots of gpio changes, both to core code and drivers. Changes do touch
architecture code to remove the need for separate arm/gpio.h includes
in most architectures. Some new drivers are added, and a number of
gpio drivers are converted to use irq_domains for gpio inputs used as
interrupts. Device tree support has been amended to allow multiple
gpio_chips to use the same device tree node. Remaining changes are
primarily bug fixes.
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Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6
Pull GPIO driver changes from Grant Likely:
"Lots of gpio changes, both to core code and drivers.
Changes do touch architecture code to remove the need for separate
arm/gpio.h includes in most architectures.
Some new drivers are added, and a number of gpio drivers are converted
to use irq_domains for gpio inputs used as interrupts. Device tree
support has been amended to allow multiple gpio_chips to use the same
device tree node.
Remaining changes are primarily bug fixes."
* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6: (33 commits)
gpio/generic: initialize basic_mmio_gpio shadow variables properly
gpiolib: Remove 'const' from data argument of gpiochip_find()
gpio/rc5t583: add gpio driver for RICOH PMIC RC5T583
gpiolib: quiet gpiochip_add boot message noise
gpio: mpc8xxx: Prevent NULL pointer deref in demux handler
gpio/lpc32xx: Add device tree support
gpio: Adjust of_xlate API to support multiple GPIO chips
gpiolib: Implement devm_gpio_request_one()
gpio-mcp23s08: dbg_show: fix pullup configuration display
Add support for TCA6424A
gpio/omap: (re)fix wakeups on level-triggered GPIOs
gpio/omap: fix broken context restore for non-OFF mode transitions
gpio/omap: fix missing check in *_runtime_suspend()
gpio/omap: remove cpu_is_omapxxxx() checks from *_runtime_resume()
gpio/omap: remove suspend/resume callbacks
gpio/omap: remove retrigger variable in gpio_irq_handler
gpio/omap: remove saved_wakeup field from struct gpio_bank
gpio/omap: remove suspend_wakeup field from struct gpio_bank
gpio/omap: remove saved_fallingdetect, saved_risingdetect
gpio/omap: remove virtual_irq_start variable
...
Conflicts:
drivers/gpio/gpio-samsung.c
Here's the driver core, and other driver subsystems, pull request for
the 3.5-rc1 merge window.
Outside of a few minor driver core changes, we ended up with the
following different subsystem and core changes as well, due to
interdependancies on the driver core:
- hyperv driver updates
- drivers/memory being created and some drivers moved into it
- extcon driver subsystem created out of the old Android staging switch
driver code
- dynamic debug updates
- printk rework, and /dev/kmsg changes
All of this has been tested in the linux-next releases for a few weeks
with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg Kroah-Hartman:
"Here's the driver core, and other driver subsystems, pull request for
the 3.5-rc1 merge window.
Outside of a few minor driver core changes, we ended up with the
following different subsystem and core changes as well, due to
interdependancies on the driver core:
- hyperv driver updates
- drivers/memory being created and some drivers moved into it
- extcon driver subsystem created out of the old Android staging
switch driver code
- dynamic debug updates
- printk rework, and /dev/kmsg changes
All of this has been tested in the linux-next releases for a few weeks
with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
Fix up conflicts in drivers/extcon/extcon-max8997.c where git noticed
that a patch to the deleted drivers/misc/max8997-muic.c driver needs to
be applied to this one.
* tag 'driver-core-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (90 commits)
uio_pdrv_genirq: get irq through platform resource if not set otherwise
memory: tegra{20,30}-mc: Remove empty *_remove()
printk() - isolate KERN_CONT users from ordinary complete lines
sysfs: get rid of some lockdep false positives
Drivers: hv: util: Properly handle version negotiations.
Drivers: hv: Get rid of an unnecessary check in vmbus_prep_negotiate_resp()
memory: tegra{20,30}-mc: Use dev_err_ratelimited()
driver core: Add dev_*_ratelimited() family
Driver Core: don't oops with unregistered driver in driver_find_device()
printk() - restore prefix/timestamp printing for multi-newline strings
printk: add stub for prepend_timestamp()
ARM: tegra30: Make MC optional in Kconfig
ARM: tegra20: Make MC optional in Kconfig
ARM: tegra30: MC: Remove unnecessary BUG*()
ARM: tegra20: MC: Remove unnecessary BUG*()
printk: correctly align __log_buf
ARM: tegra30: Add Tegra Memory Controller(MC) driver
ARM: tegra20: Add Tegra Memory Controller(MC) driver
printk() - restore timestamp printing at console output
printk() - do not merge continuation lines of different threads
...
Parse the gpio specific device node information locally.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch adds the Intel Centerton processor device ID for GPIO.
The device ID is defined in include/linux/pci_ids.h
Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
With this, five platforms are moving to the relatively new pinctrl
subsystem for their pin management, replacing the older soc specific
in-kernel interfaces with common code.
There is quite a bit of net addition of code for each platform being
added to the pinctrl subsystem. but the payback comes later when adding
new boards can be done by only providing new device trees instead.
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Merge tag 'pinctrl' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm soc-specific pinctrl changes from Olof Johansson:
"With this, five platforms are moving to the relatively new pinctrl
subsystem for their pin management, replacing the older soc specific
in-kernel interfaces with common code.
There is quite a bit of net addition of code for each platform being
added to the pinctrl subsystem. But the payback comes later when
adding new boards can be done by only providing new device trees
instead."
Fix up trivial conflicts in arch/arm/mach-ux500/{Makefile,board-mop500.c}
* tag 'pinctrl' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (61 commits)
mtd: nand: gpmi: fix compile error caused by pinctrl call
ARM: PRIMA2: select PINCTRL and PINCTRL_SIRF in Kconfig
ARM: nomadik: enable PINCTRL_NOMADIK where needed
ARM: mxs: enable pinctrl support
video: mxsfb: adopt pinctrl support
ASoC: mxs-saif: adopt pinctrl support
i2c: mxs: adopt pinctrl support
mtd: nand: gpmi: adopt pinctrl support
mmc: mxs-mmc: adopt pinctrl support
serial: mxs-auart: adopt pinctrl support
serial: amba-pl011: adopt pinctrl support
spi/imx: adopt pinctrl support
i2c: imx: adopt pinctrl support
can: flexcan: adopt pinctrl support
net: fec: adopt pinctrl support
ARM: ux500: switch MSP to using pinctrl for pins
ARM: ux500: alter MSP registration to return a device pointer
ARM: ux500: switch to using pinctrl for uart0
ARM: ux500: delete custom pin control system
ARM: ux500: switch over to Nomadik pinctrl driver
...
Three new system-on-chip models are supported: the st-ericsson u9540
in ux500, the sam9n12 in at91 and the emma ev2 in shmobile.
Emma is a little bit special because it is completely unrelated to
the classic shmobile models, but the new Renesas rmobile SoCs are a
combination of things from both Emma and shmobile, so it was decided to
have them all live in one directory.
This also contains updates to existing shmobile soc code as well as some
related board changes due to dependencies.
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Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull support for new arm SoCs from Olof Johansson:
"Three new system-on-chip models are supported: the st-ericsson u9540
in ux500, the sam9n12 in at91 and the emma ev2 in shmobile.
Emma is a little bit special because it is completely unrelated to the
classic shmobile models, but the new Renesas rmobile SoCs are a
combination of things from both Emma and shmobile, so it was decided
to have them all live in one directory.
This also contains updates to existing shmobile soc code as well as
some related board changes due to dependencies."
* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (23 commits)
mach-shmobile: Use DT_MACHINE for KZM9D V3
mach-shmobile: Emma Mobile EV2 DT support V3
mach-shmobile: KZM9D board Ethernet support V3
mach-shmobile: Emma Mobile EV2 GPIO support V3
mach-shmobile: Emma Mobile EV2 SMP support V3
mach-shmobile: KZM9D board support V3
mach-shmobile: Emma Mobile EV2 SoC base support V3
gpio: Emma Mobile GPIO driver V2
ARM: mach-shmobile: sh73a0: fixup PINT/IRQ16-IRQ31 irq number conflict
ARM: mach-shmobile: clock-r8a7740: use followparent_recalc on usb24s
ARM: mach-shmobile: clock-r8a7740: add MMCIF clock
ARM: mach-shmobile: clock-r8a7740: add SDHI clock
ARM: mach-shmobile: clock-r8a7740: add USB clock
ARM: mach-shmobile: clock-r8a7740: add FSI clock
ARM: mach-shmobile: r8a7740: cleanup I2C workaround method
ARM: mach-shmobile: r8a7740: add gpio_irq support
ARM: mach-shmobile: sh7372: Add FSI DMAEngine support
ARM / mach-shmobile: Use preset_lpj with calibrate_delay()
ARM: ux500: ioremap differences for DB9540
ARM: ux500: core U9540 support
...
The spear3xx, lpc32xx, shmobile and mmp platforms are joining the game of
booting using device trees, which is a great step forward for them. at91
and spear have pretty much completed this process with a huge amount of
work being put into at91. The other platforms are continuing the process.
We finally start to see the payback on this investment, as new machines
are getting supported purely by adding a .dts source file that can be
completely independent of the kernel source.
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Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull device tree conversions for arm-soc, part 1, from Olof Johansson:
"The spear3xx, lpc32xx, shmobile and mmp platforms are joining the game
of booting using device trees, which is a great step forward for them.
at91 and spear have pretty much completed this process with a huge
amount of work being put into at91. The other platforms are
continuing the process.
We finally start to see the payback on this investment, as new
machines are getting supported purely by adding a .dts source file
that can be completely independent of the kernel source."
Fix up trivial conflict in arch/arm/Kconfig
* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits)
ARM: at91: Add ADC driver to at91sam9260/at91sam9g20 dtsi files
arm/dts: omap4-panda: Add LEDs support
arm/dts: omap4-sdp: Add LEDs support
arm/dts: twl4030: Add twl4030-gpio node
OMAP4: devices: Do not create mcpdm device if the dtb has been provided
OMAP4: devices: Do not create dmic device if the dtb has been provided
Documentation: update docs for mmp dt
ARM: dts: refresh dts file for arch mmp
ARM: mmp: support pxa910 with device tree
ARM: mmp: support mmp2 with device tree
gpio: pxa: parse gpio from DTS file
ARM: mmp: support DT in timer
ARM: mmp: support DT in irq
ARM: mmp: append CONFIG_MACH_MMP2_DT
ARM: mmp: fix build issue on mmp with device tree
ARM: ux500: Enable PRCMU Timer 4 (clocksource) for Device Tree
ARM: ux500: Disable SMSC911x platform code registration when DT is enabled
ARM: ux500: Fork cpu-db8500 platform_devs for sequential DT enablement
ARM: ux500: Do not attempt to register non-existent i2c devices on Snowball
ARM: SPEAr3xx: Correct keyboard data passed from DT
...
Implements OF support and add code to load custom properties from the DT.
The Serial To Parallel (STP) is found on MIPS based Lantiq socs. It is a
peripheral controller used to drive external shift register cascades. At most
3 groups of 8 bits can be driven. The hardware is able to allow the DSL modem
to drive the 2 LSBs of the cascade automatically. Newer socs are also able to
automatically drive some pins via the internal PHYs. The driver currently only
supports output functionality. Patches for the input feature found on newer
generations of the soc will be provided in a later series.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Patchwork: https://patchwork.linux-mips.org/patch/3839/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Implements OF support and convert to of_mm_gpio.
By attaching hardware latches to the External Bus Unit (EBU) on Lantiq SoC, it
is possible to create output only gpios. This driver configures a special
memory address, which when written to, outputs 16 bit to the latches.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Patchwork: https://patchwork.linux-mips.org/patch/3840/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Move the 2 drivers from arch/mips/lantiq/xway/ to the subsystem and make them
buildable.
The following 2 patches will convert the drivers to OF.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Patchwork: https://patchwork.linux-mips.org/patch/3838/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The modern idiom is to use irq_domain to allocate interrupts. This is
useful partly to allow further infrastructure to be based on the domains
and partly because it makes it much easier to allocate virtual interrupts
to devices as we don't need to allocate a contiguous range of interrupt
numbers.
Convert the wm831x driver over to this infrastructure, using a legacy
IRQ mapping if an irq_base is specified in platform data and otherwise
using a linear mapping, always registering the interrupts even if they
won't ever be used. Only boards which need to use the GPIOs as
interrupts should need to use an irq_base.
This means that we can't use the MFD irq_base management since the
unless we're using an explicit irq_base from platform data we can't rely
on a linear mapping of interrupts. Instead we need to map things via
the irq_domain - provide a conveniencem function wm831x_irq() to save a
small amount of typing when doing so. Looking at this I couldn't clearly
see anything the MFD core could do to make this nicer.
Since we're not supporting device tree yet there's no meaningful
advantage if we don't do this conversion in one, the fact that the
interrupt resources are used for repeated IP blocks makes accessor
functions for the irq_domain more trouble to do than they're worth.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Make the gpio-tps65910 as platform driver and register
this from tps65910 core driver as mfd sub device.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This change removes the read/write callback functions in favor of common
regmap accessors inside the header file. This change also makes use of
regmap_read/write for single register access which maps better onto what this
driver actually needs.
Signed-off-by: Rhyland Klein <rklein@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
It fixes the issue in gpio-generic that commit fb14921 (gpio/mxc: add
missing initialization of basic_mmio_gpio shadow variables) manged to
fix in gpio-mxc driver, so that other platform specific drivers do not
suffer from the same problem over and over again.
Changes since v1:
* Turn the last parameter of bgpio_init() "bool big_endian" into
"unsigned long flags" and give those really quirky hardwares a
chance to tell that reg_set and reg_dir are unreadable.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
[grant.likely: Fix big-endian usage to explicitly set BBGPIOF_BIG_ENDIAN]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Commit 3d0f7cf0 "gpio: Adjust of_xlate API to support multiple GPIO
chips" changed the api of gpiochip_find to drop const from the data
parameter of the match hook, but didn't also drop const from data
causing a build warning.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
The PMIC device RC5T583 from RICOH supports 8 gpios.
Adding gpio driver for this device to access the pins
control through gpio library.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
[grant.likely: slight cosmetic changes]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
The pr_info message in gpiochip_add gets displayed for every
gpiochip registered. When first bringing up a system this
information could be helpful but for normal use it's just a
bunch of noise. Change the message to a pr_debug.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
commit cfadd838(powerpc/8xxx: Fix interrupt handling in MPC8xxx GPIO
driver) added an unconditional call of chip->irq_eoi() to the demux
handler.
This leads to a NULL pointer derefernce on MPC512x platforms which use
this driver as well.
Make it conditional.
Reported-by: Thomas Wucher <thwucher@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Felix Radensky <felix@embedded-sol.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: stable@vger.kernel.org
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This patch adds device tree support for gpio-lpc32xx.c.
To register the various GPIO banks as (struct) gpio_chips via the same DT
gpio-controller, we utilize the adjusted of_xlate API to manipulate the
actually used struct gpio_chip.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This patch changes the of_xlate API to make it possible for multiple
gpio_chips to refer to the same device tree node. This is useful for
banked GPIO controllers that use multiple gpio_chips for a single
device. With this change the core code will try calling of_xlate on
each gpio_chip that references the device_node and will return the
gpio number for the first one to return 'true'.
Tested-by: Roland Stigge <stigge@antcom.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Allow drivers to use the modern request and configure idiom together
with devres.
As with plain gpio_request() and gpio_request_one() we can't implement
the old school version in terms of _one() as this would force the
explicit selection of a direction in gpio_request() which could break
systems if we pick the wrong one. Implementing devm_gpio_request_one()
in terms of devm_gpio_request() would needlessly complicate things or
lead to duplication from the unmanaged version depending on how it's
done.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Pullups are enabled when bits are set, not when cleared.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This patch extends the PCA953x driver to support TI's TCA6424A 24 bit I2C I/O expander. The patch is based on code by Michele
Bevilacqua.
Changes in v2:
- Compare ngpio against 24 in both places, not >16
- Larger datatype now u32 instead of uint.
Bit fields not used for struct members since their address is taken.
- Be precise: TCA6424A (untested for older TCA6424)
Signed-off-by: Andreas Schallenberg<Andreas.Schallenberg@3alitytechnica.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
commit 1b1287032 (gpio/omap: fix missing check in *_runtime_suspend())
broke wakeups on level-triggered GPIOs by adding the enabled
non-wakeup GPIO check before the workaround that enables wakeups
on level-triggered IRQs, effectively disabling that workaround.
To fix, move the enabled non-wakeup GPIO check after the
level-triggered IRQ workaround.
Reported-by: Tony Lindgren <tony@atomide.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Tested-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
The fix in commit 1b1287032 (gpio/omap: fix missing check in
*_runtime_suspend()) exposed another bug in the context restore path.
Currently, the per-bank context restore happens whenever the context
loss count is different in runtime suspend and runtime resume *and*
whenever the per-bank contex_loss_count == 0:
if (context_lost_cnt_after != bank->context_loss_count ||
!context_lost_cnt_after) {
omap_gpio_restore_context(bank);
Restoring context when the context_lost_cnt_after == 0 is clearly
wrong, since this will be true until the first off-mode transition
(which could be never, if off-mode is never enabled.) This check
causes the context to be restored on *every* runtime PM transition.
Before commit 1b1287032 (gpio/omap: fix missing check in
*_runtime_suspend()), this code was never executed in non-OFF mode, so
there were never spurious context restores happening. After that
change though, spurious context restores could happen.
To fix, simply remove the !context_lost_cnt_after check. It is not
needed.
This bug was found when noticing that the smc911x NIC on 3530/Overo
was not working, and git bisect tracked it down to this patch. It
seems that the spurious context restore was causing the smsc911x to
not be properly probed on this platform.
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
This patch is V2 of the Emma Mobile GPIO driver. This
driver is designed to be reusable between multiple SoCs
that share the same basic building block, but so far it
has only been used on Emma Mobile EV2.
Each driver instance handles 32 GPIOs with individually
maskable IRQs. The driver operates on two I/O memory
ranges and the 32 GPIOs are hooked up to two interrupts.
In the case of Emma Mobile EV2 this GPIO building block
is used as main external interrupt controller hooking up
159 GPIOS as 159 interrupts via 5 driver instances and
10 interrupts to the GIC and the Cortex-A9 Dual.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Add GPC4 bank instance which is included in rev1 of EXYNOS5.
Signed-off-by: Sangsu Park <sangsu4u.park@samsung.com>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
* 'mxs/dt/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6: (51 commits)
ARM: dts: enable audio support for imx28-evk
ARM: dts: enable i2c device for imx28-evk
i2c: mxs: add device tree probe support
ARM: dts: enable mmc for imx28-evk
ARM: dts: enable mmc for imx23-evk
mmc: mxs-mmc: add device tree support
mmc: mxs-mmc: copy wp_gpio in struct mxs_mmc_host
mmc: mxs-mmc: have dma_channel than dma_res in mxs_mmc_host
mmc: mxs-mmc: use devm_* helper to make cleanup simpler
mmc: mxs-mmc: move header from mach into linux folder
mmc: mxs-mmc: get rid of the use of cpu_is_xxx
mmc: mxs-mmc: let ssp_is_old take host as parameter
mmc: mxs-mmc: use global stmp_device functionality
ARM: mxs: add gpio support for device tree boot
gpio/mxs: add device tree probe
gpio/mxs: get rid of the use of cpu_is_xxx
gpio/mxs: use devm_* helpers to make error handling simple
ARM: mxs: add mxs-dma dt support
ARM: mxs: do not add dma device by default
dma: mxs-dma: add device tree probe support
...
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Merge tag 'ux500-gpio-pins-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/pinctrl
ux500 GPIO and pinctrl changes for kernel 3.5
* tag 'ux500-gpio-pins-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
ARM: ux500: switch MSP to using pinctrl for pins
ARM: ux500: alter MSP registration to return a device pointer
ARM: ux500: switch to using pinctrl for uart0
ARM: ux500: delete custom pin control system
ARM: ux500: switch over to Nomadik pinctrl driver
pinctrl: add sleep state definition
pinctrl/nomadik: implement pin configuration
pinctrl/nomadik: implement pin multiplexing
pinctrl/nomadik: reuse GPIO debug function for pins
pinctrl/nomadik: break out single GPIO debug function
pinctrl/nomadik: basic Nomadik pinctrl interface
pinctrl/nomadik: !CONFIG_OF build error
gpio: move the Nomadik GPIO driver to pinctrl
Context conflicts resolved in drivers/pinctrl/Kconfig and
drivers/pinctrl/Makefile.
Signed-off-by: Olof Johansson <olof@lixom.net>
It removes the use of cpu_is_xxx from gpio-mxs driver and instead use
platform_device_id to identify the device. Accordingly, mxs platform
code is changed to register gpio device with different names, and
the registeration are done in soc specific initialization functions
now, so postcore_initcall(mxs_add_mxs_gpio) gets removed.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
