| Commit message (Collapse) | Author | Age | Files | Lines |
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After the last architecture switched to generic hard irqs the config
options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code
for !CONFIG_GENERIC_HARDIRQS can be removed.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Pull MIPS updates from Ralf Baechle:
"This has been sitting in -next for a while with no objections and all
MIPS defconfigs except one are building fine; that one platform got
broken by another patch in your tree and I'm going to submit a patch
separately.
- a handful of fixes that didn't make 3.11
- a few bits of Octeon 3 support with more to come for a later
release
- platform enhancements for Octeon, ath79, Lantiq, Netlogic and
Ralink SOCs
- a GPIO driver for the Octeon
- some dusting off of the DECstation code
- the usual dose of cleanups"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (65 commits)
MIPS: DMA: Fix BUG due to smp_processor_id() in preemptible code
MIPS: kexec: Fix random crashes while loading crashkernel
MIPS: kdump: Skip walking indirection page for crashkernels
MIPS: DECstation HRT calibration bug fixes
MIPS: Export copy_from_user_page() (needed by lustre)
MIPS: Add driver for the built-in PCI controller of the RT3883 SoC
MIPS: DMA: For BMIPS5000 cores flush region just like non-coherent R10000
MIPS: ralink: Add support for reset-controller API
MIPS: ralink: mt7620: Add cpu-feature-override header
MIPS: ralink: mt7620: Add spi clock definition
MIPS: ralink: mt7620: Add wdt clock definition
MIPS: ralink: mt7620: Improve clock frequency detection
MIPS: ralink: mt7620: This SoC has EHCI and OHCI hosts
MIPS: ralink: mt7620: Add verbose ram info
MIPS: ralink: Probe clocksources from OF
MIPS: ralink: Add support for systick timer found on newer ralink SoC
MIPS: ralink: Add support for periodic timer irq
MIPS: Netlogic: Built-in DTB for XLP2xx SoC boards
MIPS: Netlogic: Add support for USB on XLP2xx
MIPS: Netlogic: XLP2xx update for I2C controller
...
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The SOCs in the OCTEON family have 16 (or in some cases 20) on-chip
GPIO pins, this driver handles them all. Configuring the pins as
interrupt sources is handled elsewhere (OCTEON's irq handling code).
Signed-off-by: David Daney <david.daney@cavium.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5633/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Pull device tree core updates from Grant Likely:
"Generally minor changes. A bunch of bug fixes, particularly for
initialization and some refactoring. Most notable change if feeding
the entire flattened tree into the random pool at boot. May not be
significant, but shouldn't hurt either"
Tim Bird questions whether the boot time cost of the random feeding may
be noticeable. And "add_device_randomness()" is definitely not some
speed deamon of a function.
* tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux:
of/platform: add error reporting to of_amba_device_create()
irq/of: Fix comment typo for irq_of_parse_and_map
of: Feed entire flattened device tree into the random pool
of/fdt: Clean up casting in unflattening path
of/fdt: Remove duplicate memory clearing on FDT unflattening
gpio: implement gpio-ranges binding document fix
of: call __of_parse_phandle_with_args from of_parse_phandle
of: introduce of_parse_phandle_with_fixed_args
of: move of_parse_phandle()
of: move documentation of of_parse_phandle_with_args
of: Fix missing memory initialization on FDT unflattening
of: consolidate definition of early_init_dt_alloc_memory_arch()
of: Make of_get_phy_mode() return int i.s.o. const int
include: dt-binding: input: create a DT header defining key codes.
of/platform: Staticize of_platform_device_create_pdata()
of: Specify initrd location using 64-bit
dt: Typo fix
OF: make of_property_for_each_{u32|string}() use parameters if OF is not enabled
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Use the new of_parse_phandle_with_fixed_args() to implement the
corrected gpio-ranges DT property definition.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
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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 v3.12 series:
- A new driver for the TZ1090 PDC which is used on the metag
architecture.
- A new driver for the Kontron ETX or COMexpress GPIO block. This is
found on some ETX x86 devices.
- A new driver for the Fintek Super-I/O chips, used on some x86
boards.
- Added device tree probing on a few select GPIO blocks.
- Drop the Exynos support from the Samsung GPIO driver.
The Samsung maintainers have moved over to use the modernized pin
control driver to provide GPIO for the modern platforms instead.
- The usual bunch of non-critical fixes and cleanups"
* tag 'gpio-v3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (36 commits)
gpio: return -ENOTSUPP if debounce cannot be set
gpio: improve error path in gpiolib
gpio: add GPIO support for F71882FG and F71889F
of: add vendor prefix for Microchip Technology Inc
gpio: mcp23s08: rename the device tree property
gpio: samsung: Drop support for Exynos SoCs
gpio: pcf857x: Remove pdata argument to pcf857x_irq_domain_init()
gpio: pcf857x: Sort headers alphabetically
gpio: max7301: Reverting "Do not force SPI speed when using OF Platform"
gpio: Fix bit masking in Kontron PLD GPIO driver
gpio: pca953x: fix gpio input on gpio offsets >= 8
drivers/gpio: simplify use of devm_ioremap_resource
drivers/gpio/gpio-omap.c: convert comma to semicolon
gpio-lynxpoint: Fix warning about unbalanced pm_runtime_enable
gpio: Fix platform driver name in Kontron PLD GPIO driver
gpio: adnp: Fix segfault if request_threaded_irq fails
gpio: msm: Staticize local variable 'msm_gpio'
gpio: gpiolib-of.c: make error message more meaningful by adding the node name and index
gpio: use dev_get_platdata()
gpio/mxc: add chained_irq_enter/exit() to mx2_gpio_irq_handler
...
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It appears some drivers are using gpio_set_debounce()
opportunistically, i.e. without knowing whether it works or
not. (Example: input/keyboard/gpio_keys.c) to account for
this use case, return -ENOTSUPP and do not print any
warnings in this case.
Took a round over the other gpio_set_debounce() consumers
to make sure that none of them are relying on the returned
error code to be something specific.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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At several places the gpiolib will proceed to handle a GPIO
descriptor even if it's ->chip member is NULL and no gpiochip
is associated.
Fix this by checking that both the descriptor cookie *and*
the chip pointer are valid.
Also bail out earlier with more specific diagnostic messages
on missing operations for setting as input/output or debounce.
ChangeLog v1->v2:
- Also return -EIO on gpiod_set_debounce() with missing
operations in the vtable
- Fix indentations.
Suggested-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Frank Rowand <frank.rowand@sonymobile.com>
Cc: Tim Bird <tim.bird@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch adds support for the GPIOs found on the Fintek super-I/O
chips F71882FG and F71889F.
A super-I/O is a legacy I/O controller embedded on x86 motherboards. It
is used to connect the low-bandwidth devices. Among others functions the
F71882FG/F71889F provides: a parallel port, two serial ports, a keyboard
controller, an hardware monitoring controller and some GPIO pins.
Note that this super-I/Os are embedded on some Atom-based LaCie NASes.
The GPIOs are used to control the LEDs and the hard drive power.
Changes since v3:
- Use request_muxed_region to protect the I/O ports against concurrent
accesses.
Changes since v2:
- Remove useless NULL setters for driver data.
Changes since v1:
- Enhance the commit message by describing what is a Super-I/O.
- Use self-explanatory names for the GPIO register macros.
- Add a comment to explain the platform device and driver registration.
- Fix gpio_get when GPIO is configured in input mode. I only had
the hardware to check this mode recently...
Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The device tree property should be more descriptive.
microchip seems more reasonable than mcp. The old mcp
prefix is still supported but marked as deprecated.
Users of mcp have to switch to the microchip prefix.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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GPIO support on Exynos SoCs is provided by pinctrl-samsung driver,
leaving all the support code in gpio-samsung driver unused. This dead
code can be safely removed and so it is done by this patch.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The argument is not used, remove it. No board registers a pcf857x device
with an IRQ without specifying platform data, IRQ domain registration
behaviour is thus not affected by this change.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This makes checking for duplicates when adding a new #include easier.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch reverts commit 047b93a35961f7a6561e6f5dcb040738f822b892 which breaks
MAX7301 GPIO driver because that commit was dependant on a rejected patch that
was implementing selection of SPI speed from the Device Tree.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch fixes the bit masking within the GPIO driver. The masking is
basically done twice which causes the wrong GPIOs to be addressed.
Signed-off-by: Michael Brunner <michael.brunner@kontron.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This change fixes a regression introduced by commit
f5f0b7aa8 (gpio: pca953x: make the register access by GPIO bank)
When the pca953x driver was converted to using 8-bit reads/writes
the bitmask in pca953x_gpio_get_value wasn't adjusted with a
modulus BANK_SZ and consequently looks at the wrong bits in the
input register.
Signed-off-by: Andrew Ruder <andrew.ruder@elecsyscorp.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Remove unneeded error handling on the result of a call to
platform_get_resource when the value is passed to devm_ioremap_resource.
Move the call to platform_get_resource adjacent to the call to
devm_ioremap_resource to make the connection between them more clear.
A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression pdev,res,n,e,e1;
expression ret != 0;
identifier l;
@@
- res = platform_get_resource(pdev, IORESOURCE_MEM, n);
... when != res
- if (res == NULL) { ... \(goto l;\|return ret;\) }
... when != res
+ res = platform_get_resource(pdev, IORESOURCE_MEM, n);
e = devm_ioremap_resource(e1, res);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Replace a comma between expression statements by a semicolon. This changes
the semantics of the code, but given the current indentation appears to be
what is intended.
A simplified version of the semantic patch that performs this
transformation is as follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r@
expression e1,e2,e;
type T;
identifier i;
@@
e1
-,
+;
e2;
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Missing pm_runtime_disable call in driver remove path caused
an unbalanaced pm_runtime_enable warning when driver was reloaded
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch changes the driver name to be consistent with the name that
is registered as cell name in the MFD driver. Otherwise the driver won't
load.
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Kevin Strasser <strassek@engr.orst.edu>
Signed-off-by: Michael Brunner <michael.brunner@kontron.com>
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In case request_threaded_irq inside adnp_irq_setup fails, the driver
segfaults. This is because irq_domain_remove is called twice with
the same pointer. First time in adnp_irq_setup and then a second time
after leaving adnp_irq_setup in the error path of adnp_i2c_probe
inside adnp_teardown.
This fixes this by removing the call to irq_domain_remove from
adnp_irq_setup.
Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The local variable 'msm_gpio' is used only in this file.
Fix the following sparse warning:
drivers/gpio/gpio-msm-v2.c:109:21: warning: symbol 'msm_gpio' was not declared. Should it be static?
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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name and index
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Similar to commit
0e44b6e (gpio/mxc: add chained_irq_enter/exit() to mx3_gpio_irq_handler())
. It doesn't seem to be critical to make the irqs work, but still it is
more correct.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The call to gpiochip_add made by this driver is capable of auto-selecting a
base if one is not provided. However, it was not called unless there was
already a DT entry or platform data. This patch calls it even if the base is
not already known so that gpiochip_add can attempt to find a usable base.
Signed-off-by: Daniel M. Weeks <dan@danweeks.net>
Acked-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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It seems that the value read back from the PALMAS_GPIO_DATA_IN register
isn't valid if the GPIO direction is out. When that's the case, we can
read back the PALMAS_GPIO_DATA_OUT register to get the proper output value.
Signed-off-by: Andrew Chew <achew@nvidia.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Add of_device_id table for Palma GPIO to be enable the
driver from DT file.
The driver can be registered from DT file as:
palmas: tps65913@58 {
:::::::::::
palmas_gpio: palmas_gpio {
compatible = "ti,palmas-gpio";
gpio-controller;
#gpio-cells = <2>;
};
};
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Commit 8cd73e4e (gpio: gpio-mxc: Use devm functions) causes the following build
error on imx_v4_v7_defconfig:
drivers/gpio/gpio-mxc.c:414:2: error: implicit declaration of function 'IS_ERR' [-Werror=implicit-function-declaration]
drivers/gpio/gpio-mxc.c:415:3: error: implicit declaration of function 'PTR_ERR' [-Werror=implicit-function-declaration]
Note: imx_v6_v7_defconfig does not give this build error, probably due to some
indirect header file inclusion.
Reported-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Commit f87311743 ("ARM: mmp: add more compatible names in gpio driver")
changed the driver logic to determine the number of available GPIOs from
the compatible string, and hence obsoleted the (undocumented) child
nodes that were previously necessary. However, it left some remainder
which can be safely removed now.
Also, this patch makes pxa_gpio_probe_dt() return the correct value in
case irq_alloc_descs() fails.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Register the GPIO pin range, and request and free GPIO pins using the
pinctrl API. The pctl_name platform data member should be used by
platform devices to point out which pinctrl device to use.
Follows same style as "dc3465a gpio-rcar: Add pinctrl support",
by Laurent Pinchart, thanks to him.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Add gpio support for the on-board PLD found on some Kontron embedded modules.
Originally-from: Michael Brunner <michael.brunner@kontron.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Kevin Strasser <kevin.strasser@linux.intel.com>
Acked-by: Darren Hart <dvhart@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The usage of strict_strtol() is not preferred, because
strict_strtol() is obsolete. Thus, kstrtol() should be
used.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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TWL6040 is used only with OMAP4/5 SoCs and they can only boot in in DT mode.
The support for pdata/legacy boot can be removed.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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By using devm functions we can get a simpler code.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Convert gpio-tz1090 driver to use generic irqchips. This allows the
irq_ack, irq_mask, and irq_unmask callbacks and associated helper
functions to be removed. Also switch to using irq_setup_alt_chip() in
the irq_set_type callback instead of using __irq_set_handler_locked().
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Add a GPIO driver for the low-power Powerdown Controller GPIOs in the
TZ1090 SoC.
The driver is instantiated by device tree and supports interrupts for
the SysWake GPIOs only.
Changes in v4:
- fix typos in DT bindings compatible properties
- reference Documentation/devicetree/bindings/gpio/gpio.txt in
gpio-ranges description in DT bindings
- fix gpio-ranges examples in DT bindings (it must now have 3 cells)
Changes in v3:
- separated from irq-imgpdc and removed arch/metag changes to allow
these patches to go upstream separately via the pinctrl[/gpio] trees
(particularly the pinctrl drivers depend on the new pinconf DT
bindings).
- some s/unsigned/unsigned int/.
- gpio-tz1090*: refer to <dt-bindings/gpio/gpio.h> and
<dt-bindings/interrupt-controller/irq.h> flags in bindings.
- gpio-tz1090*: move initcall from postcore to subsys.
Changes in v2:
- gpio-tz1090-pdc: remove references to Linux flags in dt bindings
- gpio-tz1090-pdc: make use of BIT() from linux/bitops.h
- gpio-tz1090-pdc: make register accessors inline to match pinctrl
- gpio-tz1090-pdc: update gpio-ranges to use 3 cells after recent ABI
breakage
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-doc@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Add a GPIO driver for the main GPIOs found in the TZ1090 (Comet) SoC.
This doesn't include low-power GPIOs as they're controlled separately
via the Powerdown Controller (PDC) registers.
The driver is instantiated by device tree and supports interrupts for
all GPIOs.
Changes in v4:
- fix typos in DT bindings compatible properties
- reference Documentation/devicetree/bindings/gpio/gpio.txt in
gpio-ranges description in DT bindings
- fix gpio-ranges examples in DT bindings (it must now have 3 cells)
- gpio-tz1090: use of_property_read_u32 instead of of_get_property
Changes in v3:
- separated from irq-imgpdc and removed arch/metag changes to allow
these patches to go upstream separately via the pinctrl[/gpio] trees
(particularly the pinctrl drivers depend on the new pinconf DT
bindings).
- some s/unsigned/unsigned int/.
- some s/unsigned int/bool/ and use of BIT().
- gpio-tz1090*: refer to <dt-bindings/gpio/gpio.h> and
<dt-bindings/interrupt-controller/irq.h> flags in bindings.
- gpio-tz1090*: move initcall from postcore to subsys.
- gpio-tz1090: add REG_ prefix to some constants for consistency.
- gpio-tz1090: add comment to explain tz1090_gpio_irq_next_edge
cunningness.
Changes in v2:
- gpio-tz1090: remove references to Linux flags in dt bindings
- gpio-tz1090: make use of BIT() from linux/bitops.h
- gpio-tz1090: make register accessors inline to match pinctrl
- gpio-tz1090: update gpio-ranges to use 3 cells after recent ABI
breakage
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-doc@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch moves the pca953x.h header from include/linux/i2c to
include/linux/platform_data and updates existing support accordingly.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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drivers/gpio/gpio-msm-v1.c: In function 'gpio_msm_v1_probe':
drivers/gpio/gpio-msm-v1.c:656:2:
error: implicit declaration of function 'IS_ERR'
[-Werror=implicit-function-declaration]
drivers/gpio/gpio-msm-v1.c:657:3:
error: implicit declaration of function 'PTR_ERR'
[-Werror=implicit-function-declaration]
This driver failed to compile after commit 68515bb
(gpio_msm: Convert to use devm_ioremap_resource,
2013-06-10).
Acked-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This reverts commit 0e970cec05635adbe7b686063e2548a8e4afb8f4.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This reverts commit b4419e1a15905191661ffe75ba2f9e649f5d565e.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This reverts commit 949eb1a4d29dc75e0b5b16b03747886b52ecf854.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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of_property_read_u32 return 0 on success. The check was using a ! to
return error. Fix the if condition.
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Pankaj Jangra <jangra.pankaj9@gmail.com>
Cc: "Bird, Tim" <Tim.Bird@sonymobile.com>
Signed-off-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The OMAP GPIO driver check if the chip has an associated
Device Tree node using the struct gpio_chip of_node member.
But this is only build if CONFIG_OF_GPIO is defined which
leads to the following error when using omap1_defconfig:
linux/drivers/gpio/gpio-omap.c: In function 'omap_gpio_chip_init':
linux/drivers/gpio/gpio-omap.c:1080:17: error: 'struct gpio_chip' has no member named 'of_node'
linux/drivers/gpio/gpio-omap.c: In function 'omap_gpio_irq_map':
linux/drivers/gpio/gpio-omap.c:1116:16: error: 'struct gpio_chip' has no member named 'of_node'
Reported-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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When an OMAP GPIO is used as an IRQ line, a call to gpio_request()
has to be made to initialize the OMAP GPIO bank before a driver
request the IRQ. Otherwise the call to request_irq() fails.
Drives should not be aware of this neither care wether an IRQ line
is a GPIO or not. They should just request the IRQ and this has to
be handled by the irq_chip driver.
With the current OMAP GPIO DT binding, if we define:
gpio6: gpio@49058000 {
compatible = "ti,omap3-gpio";
reg = <0x49058000 0x200>;
interrupts = <34>;
ti,hwmods = "gpio6";
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
};
interrupt-parent = <&gpio6>;
interrupts = <16 8>;
The GPIO is correctly mapped as an IRQ but a call to gpio_request()
is never made. Since a call to the custom IRQ domain .map function
handler is made for each GPIO used as an IRQ, the GPIO can be setup
and configured as input there automatically.
Changes since v3:
- Use bank->chip.of_node instead of_have_populated_dt() to check
DT or legacy boot as suggested by Jean-Christophe PLAGNIOL-VILLARD
- Add a comment that this is just a temporary solution until and
that it has to be removed once is handled by the IRQ core.
Changes since v2:
- Only make the call to gpio_request_one() conditional in the DT
case as suggested by Grant Likely.
Changes since v1:
- Split the irq domain mapping function handler and the GPIO
request in two different patches.
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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When a GPIO is defined as an interrupt line using Device
Tree, a call to irq_create_of_mapping() is made that calls
irq_create_mapping(). So, is not necessary to do the mapping
for all OMAP GPIO lines and explicitly call irq_create_mapping()
on the driver probe() when booting with Device Tree.
Add a custom IRQ domain .map function handler that will be
called by irq_create_mapping() to map the GPIO lines used as IRQ.
This also allows to execute needed setup code such as configuring
a GPIO as input and enabling the GPIO bank.
Changes since v3:
- Use bank->chip.of_node instead of_have_populated_dt() to check
DT or legacy boot as suggested by Jean-Christophe PLAGNIOL-VILLARD
Changes since v2:
- Unconditionally do the IRQ setup in the .map() function and
only call irq_create_mapping() in the gpio chip init to avoid
code duplication as suggested by Grant Likely.
Changes since v1:
- Split the addition of the .map function handler and the
automatic gpio request in two different patches.
- Add GPIO IRQ setup logic to the irq domain mapping function.
- Only call irq_create_mapping for every GPIO on legacy boot.
- Only setup a GPIO IRQ on the .map function for DeviceTree boot.
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael Wysocki:
"This time the total number of ACPI commits is slightly greater than
the number of cpufreq commits, but Viresh Kumar (who works on cpufreq)
remains the most active patch submitter.
To me, the most significant change is the addition of offline/online
device operations to the driver core (with the Greg's blessing) and
the related modifications of the ACPI core hotplug code. Next are the
freezer updates from Colin Cross that should make the freezing of
tasks a bit less heavy weight.
We also have a couple of regression fixes, a number of fixes for
issues that have not been identified as regressions, two new drivers
and a bunch of cleanups all over.
Highlights:
- Hotplug changes to support graceful hot-removal failures.
It sometimes is necessary to fail device hot-removal operations
gracefully if they cannot be carried out completely. For example,
if memory from a memory module being hot-removed has been allocated
for the kernel's own use and cannot be moved elsewhere, it's
desirable to fail the hot-removal operation in a graceful way
rather than to crash the kernel, but currenty a success or a kernel
crash are the only possible outcomes of an attempted memory
hot-removal. Needless to say, that is not a very attractive
alternative and it had to be addressed.
However, in order to make it work for memory, I first had to make
it work for CPUs and for this purpose I needed to modify the ACPI
processor driver. It's been split into two parts, a resident one
handling the low-level initialization/cleanup and a modular one
playing the actual driver's role (but it binds to the CPU system
device objects rather than to the ACPI device objects representing
processors). That's been sort of like a live brain surgery on a
patient who's riding a bike.
So this is a little scary, but since we found and fixed a couple of
regressions it caused to happen during the early linux-next testing
(a month ago), nobody has complained.
As a bonus we remove some duplicated ACPI hotplug code, because the
ACPI-based CPU hotplug is now going to use the common ACPI hotplug
code.
- Lighter weight freezing of tasks.
These changes from Colin Cross and Mandeep Singh Baines are
targeted at making the freezing of tasks a bit less heavy weight
operation. They reduce the number of tasks woken up every time
during the freezing, by using the observation that the freezer
simply doesn't need to wake up some of them and wait for them all
to call refrigerator(). The time needed for the freezer to decide
to report a failure is reduced too.
Also reintroduced is the check causing a lockdep warining to
trigger when try_to_freeze() is called with locks held (which is
generally unsafe and shouldn't happen).
- cpufreq updates
First off, a commit from Srivatsa S Bhat fixes a resume regression
introduced during the 3.10 cycle causing some cpufreq sysfs
attributes to return wrong values to user space after resume. The
fix is kind of fresh, but also it's pretty obvious once Srivatsa
has identified the root cause.
Second, we have a new freqdomain_cpus sysfs attribute for the
acpi-cpufreq driver to provide information previously available via
related_cpus. From Lan Tianyu.
Finally, we fix a number of issues, mostly related to the
CPUFREQ_POSTCHANGE notifier and cpufreq Kconfig options and clean
up some code. The majority of changes from Viresh Kumar with bits
from Jacob Shin, Heiko Stübner, Xiaoguang Chen, Ezequiel Garcia,
Arnd Bergmann, and Tang Yuantian.
- ACPICA update
A usual bunch of updates from the ACPICA upstream.
During the 3.4 cycle we introduced support for ACPI 5 extended
sleep registers, but they are only supposed to be used if the
HW-reduced mode bit is set in the FADT flags and the code attempted
to use them without checking that bit. That caused suspend/resume
regressions to happen on some systems. Fix from Lv Zheng causes
those registers to be used only if the HW-reduced mode bit is set.
Apart from this some other ACPICA bugs are fixed and code cleanups
are made by Bob Moore, Tomasz Nowicki, Lv Zheng, Chao Guan, and
Zhang Rui.
- cpuidle updates
New driver for Xilinx Zynq processors is added by Michal Simek.
Multidriver support simplification, addition of some missing
kerneldoc comments and Kconfig-related fixes come from Daniel
Lezcano.
- ACPI power management updates
Changes to make suspend/resume work correctly in Xen guests from
Konrad Rzeszutek Wilk, sparse warning fix from Fengguang Wu and
cleanups and fixes of the ACPI device power state selection
routine.
- ACPI documentation updates
Some previously missing pieces of ACPI documentation are added by
Lv Zheng and Aaron Lu (hopefully, that will help people to
uderstand how the ACPI subsystem works) and one outdated doc is
updated by Hanjun Guo.
- Assorted ACPI updates
We finally nailed down the IA-64 issue that was the reason for
reverting commit 9f29ab11ddbf ("ACPI / scan: do not match drivers
against objects having scan handlers"), so we can fix it and move
the ACPI scan handler check added to the ACPI video driver back to
the core.
A mechanism for adding CMOS RTC address space handlers is
introduced by Lan Tianyu to allow some EC-related breakage to be
fixed on some systems.
A spec-compliant implementation of acpi_os_get_timer() is added by
Mika Westerberg.
The evaluation of _STA is added to do_acpi_find_child() to avoid
situations in which a pointer to a disabled device object is
returned instead of an enabled one with the same _ADR value. From
Jeff Wu.
Intel BayTrail PCH (Platform Controller Hub) support is added to
the ACPI driver for Intel Low-Power Subsystems (LPSS) and that
driver is modified to work around a couple of known BIOS issues.
Changes from Mika Westerberg and Heikki Krogerus.
The EC driver is fixed by Vasiliy Kulikov to use get_user() and
put_user() instead of dereferencing user space pointers blindly.
Code cleanups are made by Bjorn Helgaas, Nicholas Mazzuca and Toshi
Kani.
- Assorted power management updates
The "runtime idle" helper routine is changed to take the return
values of the callbacks executed by it into account and to call
rpm_suspend() if they return 0, which allows us to reduce the
overall code bloat a bit (by dropping some code that's not
necessary any more after that modification).
The runtime PM documentation is updated by Alan Stern (to reflect
the "runtime idle" behavior change).
New trace points for PM QoS are added by Sahara
(<keun-o.park@windriver.com>).
PM QoS documentation is updated by Lan Tianyu.
Code cleanups are made and minor issues are addressed by Bernie
Thompson, Bjorn Helgaas, Julius Werner, and Shuah Khan.
- devfreq updates
New driver for the Exynos5-bus device from Abhilash Kesavan.
Minor cleanups, fixes and MAINTAINERS update from MyungJoo Ham,
Abhilash Kesavan, Paul Bolle, Rajagopal Venkat, and Wei Yongjun.
- OMAP power management updates
Adaptive Voltage Scaling (AVS) SmartReflex voltage control driver
updates from Andrii Tseglytskyi and Nishanth Menon."
* tag 'pm+acpi-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (162 commits)
cpufreq: Fix cpufreq regression after suspend/resume
ACPI / PM: Fix possible NULL pointer deref in acpi_pm_device_sleep_state()
PM / Sleep: Warn about system time after resume with pm_trace
cpufreq: don't leave stale policy pointer in cdbs->cur_policy
acpi-cpufreq: Add new sysfs attribute freqdomain_cpus
cpufreq: make sure frequency transitions are serialized
ACPI: implement acpi_os_get_timer() according the spec
ACPI / EC: Add HP Folio 13 to ec_dmi_table in order to skip DSDT scan
ACPI: Add CMOS RTC Operation Region handler support
ACPI / processor: Drop unused variable from processor_perflib.c
cpufreq: tegra: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: s3c64xx: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: omap: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: imx6q: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: exynos: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: dbx500: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: davinci: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: arm-big-little: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: powernow-k8: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: pcc: call CPUFREQ_POSTCHANGE notfier in error cases
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The "runtime idle" helper routine, rpm_idle(), currently ignores
return values from .runtime_idle() callbacks executed by it.
However, it turns out that many subsystems use
pm_generic_runtime_idle() which checks the return value of the
driver's callback and executes pm_runtime_suspend() for the device
unless that value is not 0. If that logic is moved to rpm_idle()
instead, pm_generic_runtime_idle() can be dropped and its users
will not need any .runtime_idle() callbacks any more.
Moreover, the PCI, SCSI, and SATA subsystems' .runtime_idle()
routines, pci_pm_runtime_idle(), scsi_runtime_idle(), and
ata_port_runtime_idle(), respectively, as well as a few drivers'
ones may be simplified if rpm_idle() calls rpm_suspend() after 0 has
been returned by the .runtime_idle() callback executed by it.
To reduce overall code bloat, make the changes described above.
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"Here is a batch of GPIO changes for v3.11. I have agreed with Grant
to take care of the pull requests for this development cycle.
No special things are happening in the GPIO tree this time (nice with
some calm) and I have been extra careful to do regression builds and
it's well boiled in -next.
GPIO changes for the v3.11 development cycle:
- Incremental development for the Langwell (Atom SoC), Xilinx, ICH
and RCAR drivers.
- Cleanups from Jingoo Han, Axel Lin, Wei Jongjun, Wolfram Sang,
Tushar Behera, Sachin Kamat and Yijing Wang"
* tag 'gpio-for-v3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (35 commits)
Gpio/trivial: replace numeric with standard PM state macros
gpiolib: remove warnning of allocations with IRQs disabled
gpio: grgpio: Staticize local symbols
gpio-langwell: remove Withney point support
gpio: ich: add GPO_BLINK support
gpio-sta2x11: Convert to use devm_ioremap_resource
gpio_msm: Convert to use devm_ioremap_resource
gpio-rcar: Use OUTDT when reading GPIOs configured as output
gpio-sta2x11: Fix potential NULL pointer dereference
gpio/omap: omap_gpio_init_context stub must be inline
gpio: msm-v1: Remove errant __devinit to fix compile
gpio: devres: make comments proper
GPIO: xilinx: Enable driver for Xilinx zynq
DT: Add documentation for gpio-xilinx
GPIO: xilinx: Use BIT macro
GPIO: xilinx: Use __raw_readl/__raw_writel IO functions
GPIO: xilinx: Add support for dual channel
GPIO: xilinx: Simplify driver probe function
gpio: sx150x: convert to use devm_* functions
MAINTAINERS: add linux-gpio mailing list
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