29 Oct, 2010
5 commits
-
This is needed for supporting the upcoming VX855 camera and OLPC DCON
drivers, as well as the advanced viafb features on non-OLPC hardware
based on this chip.Based on earlier work by Harald Welte.
Signed-off-by: Daniel Drake
Signed-off-by: Samuel Ortiz -
Free allocated memory. Call stmpe_disable() if it was enabled.
Signed-off-by: Vasiliy Kulikov
Acked-by: Wolfram Sang
Acked-by: Rabin Vincent
Signed-off-by: Samuel Ortiz -
This patch removes the requirement that gpio base be supplied in
platform data.Signed-off-by: Virupax Sadashivpetimath
Acked-by: Linus Walleij
Acked-by: Wolfram Sang
Signed-off-by: Samuel Ortiz -
GPIOs on these controller are multi-functional. If you decided to use
some of them e.g. as input channels for the ADC, you surely don't want
those pins to be reassigned as simple GPIOs (which may be triggered even
from userspace via 'export'). Same for the touchscreen controller pins.
Since knowledge about the hardware is needed to decide which GPIOs to
reserve, let this bitmask be inside platform_data and provide some
defines to assist potential users.Signed-off-by: Wolfram Sang
Acked-by: Rabin Vincent
Cc: Linus Walleij
Signed-off-by: Samuel Ortiz -
Not sure where this went.
Signed-off-by: Mark Brown
Signed-off-by: Samuel Ortiz
28 Oct, 2010
7 commits
-
In this case the logic is very similar but the IRQs are not exposed and
the device is not picked up via PCIBased on a separate internal whitney point driver by Yin Kangkai.
Signed-off-by: Alan Cox
Cc: Yin Kangkai
Cc: Alek Du
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Deweird this driver.
Cc: Alek Du
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Topcliff PCH is the platform controller hub that is going to be used in
Intel's upcoming general embedded platform. All IO peripherals in
Topcliff PCH are actually devices sitting on AMBA bus. Topcliff PCH has
GPIO I/F. Using this I/F, it is able to access system devices connected
to GPIO.[akpm@linux-foundation.org: ese DEFINE_PCI_DEVICE_TABLE (per Joe Perches)]
Signed-off-by: Tomoya MORINAGA
Reviewed-by: Mark Brown
Cc: Rabin Vincent
Cc: Samuel Ortiz
Cc: Linus Walleij
Cc: Tomoya MORINAGA
Cc: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Implement irq_chip functionality on ADP5588/5587 GPIO expanders. Only
level sensitive interrupts are supported. Interrupts provided by this
irq_chip must be requested using request_threaded_irq().Signed-off-by: Michael Hennerich
Signed-off-by: Mike Frysinger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for generic 74x164 serial-in/parallel-out 8-bits shift
register. This driver can be used as a GPIO output expander.[akpm@linux-foundation.org: remove unused local `refresh']
Signed-off-by: Miguel Gaio
Signed-off-by: Juhos Gabor
Signed-off-by: Florian Fainelli
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some versions of the hardware can trash the IER register if simultaneous
interrupts occur. This patch works around it by using a local copy of the
register and restoring it after every interrupt.Signed-off-by: Tomas Hallenberg
Acked-by: Richard Röjfors
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The basic GPIO controllers may be found in various on-board FPGA and ASIC
solutions that are used to control board's switches, LEDs, chip-selects,
Ethernet/USB PHY power, etc.These controllers may not provide any means of pin setup
(in/out/open drain).The driver supports:
- 8/16/32/64 bits registers;
- GPIO controllers with clear/set registers;
- GPIO controllers with a single "data" register;
- Big endian bits/GPIOs ordering (mostly used on PowerPC).Signed-off-by: Anton Vorontsov
Reviewed-by: Mark Brown
Cc: David Brownell
Cc: Samuel Ortiz ,
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Oct, 2010
1 commit
-
Our Moorestown platform has two max7315 chips which is covered by pca953x
i2c gpio driver.A while ago this driver got updated with nested irq thread support, and it
broke the compatibity with "request_irq". For example, the gpio_keys.c
driver can not work with this driver now. This patch fixes the issue by
switching to generic_handle_irq.Also fix the irq_base issue: irq_base == 0 is valid, and a "-1" value
should mean invalid. IRQ 0 is not a valid IRQ, irq_base of 0 is valid.Signed-off-by: Alek Du
Signed-off-by: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
25 Oct, 2010
1 commit
-
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
mtd/m25p80: add support to parse the partitions by OF node
of/irq: of_irq.c needs to include linux/irq.h
of/mips: Cleanup some include directives/files.
of/mips: Add device tree support to MIPS
of/flattree: Eliminate need to provide early_init_dt_scan_chosen_arch
of/device: Rework to use common platform_device_alloc() for allocating devices
of/xsysace: Fix OF probing on little-endian systems
of: use __be32 types for big-endian device tree data
of/irq: remove references to NO_IRQ in drivers/of/platform.c
of/promtree: add package-to-path support to pdt
of/promtree: add of_pdt namespace to pdt code
of/promtree: no longer call prom_ functions directly; use an ops structure
of/promtree: make drivers/of/pdt.c no longer sparc-only
sparc: break out some PROM device-tree building code out into drivers/of
of/sparc: convert various prom_* functions to use phandle
sparc: stop exporting openprom.h header
powerpc, of_serial: Endianness issues setting up the serial ports
of: MTD: Fix OF probing on little-endian systems
of: GPIO: Fix OF probing on little-endian systems
19 Oct, 2010
1 commit
-
…x' and 'unwind' into devel
29 Sep, 2010
1 commit
-
DTB is always big-endian that's why is necessary
to convert it.Signed-off-by: Michal Simek
Signed-off-by: Grant Likely
19 Sep, 2010
1 commit
-
For board-specific initialization.
Cc: Samuel Ortiz
Cc: linux-kernel@vger.kernel.org
Acked-by: Linus Walleij
Signed-off-by: Rabin Vincent
Signed-off-by: Russell King
10 Sep, 2010
1 commit
-
Replace the arbitrary software-reset call from the device-probe
method, because:- It is defective. To work correctly, it should be two byte writes,
not a single word write. As it stands, it does nothing.- Some devices with sx150x expanders installed have their NRESET pins
ganged on the same line, so resetting one causes the others to reset -
not a nice thing to do arbitrarily!- The probe, usually taking place at boot, implies a recent hard-reset,
so a software reset at this point is just a waste of energy anyway.Therefore, make it optional, defaulting to off, as this will match the
common case of probing at powerup and also matches the current broken
no-op behavior.Signed-off-by: Gregory Bean
Reviewed-by: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Aug, 2010
2 commits
-
The debounce times are approximate, they can be selected using the two
input functions.Signed-off-by: Mark Brown
Signed-off-by: Samuel Ortiz -
Add support for the GPIOs on STMPE I/O Expanders.
[l.fu@pengutronix.de: fix set direction input]
[l.fu@pengutronix.de: set GPIO alternate function while requesting]
Acked-by: Luotao Fu
Acked-by: Linus Walleij
Signed-off-by: Rabin Vincent
Signed-off-by: Samuel Ortiz
11 Aug, 2010
6 commits
-
Add support for Semtech SX150-series I2C GPIO expanders. Compatible
models include:8 bits: sx1508q
16 bits: sx1509qSigned-off-by: Gregory Bean
Cc: David Brownell
Cc: Jean Delvare
Cc: Trilok Soni
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The pca953x driver requires the use of threaded irqs as its irq
demultiplexer can sleep. Our irq handler can be called from any context,
so use request_any_context_irq to allow threaded irqs as well.Signed-off-by: Daniel Gl?ckner
Reported-by: Ian Jeffray
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
As sysfs_notify_dirent has been made irq safe, there is no reason to not
call it directly from irq. With the work_struct removed, the remaining
element in poll_desc is a sysfs_dirent pointer which may not be NULL. We
can therefore store it directly in the idr and pass it as context to the
irq handler.Most part of the patch deals with renaming defines and variables to
reflect their new use without functional change.I also took the opportunity to initialize the idr statically.
Signed-off-by: Daniel Gl?ckner
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Be more consistent about runtime programming interface abuse warnings,
which can reduce some confusion and trigger bugfixes. Based on an
observation and patch from Jani Nikula.Also update doc to highlight some sleeping-call issues and to match some
recent changes.Signed-off-by: David Brownell
Cc: Jani Nikula
Cc: "Ryan Mallon"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Provide sane defaults for pcf857x, so the driver can be used w/o providing
platform data (and thus can be simply bound via OF tree).Signed-off-by: Dmitry Eremin-Solenikov
Cc: Jean Delvare
Cc: David Brownell
Cc: Grant Likely
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The gpios on the max730x chips have support for internal pullups while in
input mode.This patch adds support for configuring these pullups via platform data.
A new member ("input_pullup_active") to the platform data struct is
introduced. A set bit in this variable activates the pullups while the
respective port is in input mode. This is a compatible enhancement since
unset bits lead to disables pullups which was the default in the original
driver._Note_: the 4 lowest bits in "input_pullup_active" are unused because the
first 4 ports of the controller are not used, too.Signed-off-by: Marc Kleine-Budde
Reviewed-by: Wolfram Sang
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Aug, 2010
1 commit
-
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6: (63 commits)
of/platform: Register of_platform_drivers with an "of:" prefix
of/address: Clean up function declarations
of/spi: call of_register_spi_devices() from spi core code
of: Provide default of_node_to_nid() implementation.
of/device: Make of_device_make_bus_id() usable by other code.
of/irq: Fix endian issues in parsing interrupt specifiers
of: Fix phandle endian issues
of/flattree: fix of_flat_dt_is_compatible() to match the full compatible string
of: remove of_default_bus_ids
of: make of_find_device_by_node generic
microblaze: remove references to of_device and to_of_device
sparc: remove references to of_device and to_of_device
powerpc: remove references to of_device and to_of_device
of/device: Replace of_device with platform_device in includes and core code
of/device: Protect against binding of_platform_drivers to non-OF devices
of: remove asm/of_device.h
of: remove asm/of_platform.h
of/platform: remove all of_bus_type and of_platform_bus_type references
of: Merge of_platform_bus_type with platform_bus_type
drivercore/of: Add OF style matching to platform bus
...Fix up trivial conflicts in arch/microblaze/kernel/Makefile due to just
some obj-y removals by the devicetree branch, while the microblaze
updates added a new file.
31 Jul, 2010
1 commit
-
Conflicts:
arch/arm/mm/init.c
28 Jul, 2010
1 commit
-
When freeing a gpio that has not been exported, gpio_unexport() prints a
debug message when it should just fall through silently.Example spurious message:
gpio_unexport: gpio0 status -22
Signed-off-by: Jon Povey
Cc: David Brownell
Acked-by: Uwe Kleine-K?nig
Cc: Gregory Bean
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Jul, 2010
1 commit
-
Found in the Versatile build:
WARNING: drivers/built-in.o(.data+0x14c): Section mismatch in reference from the variable pl061_gpio_driver to the (unknown reference) .init.data:(unknown)
The variable pl061_gpio_driver references
the (unknown reference) __initdata (unknown)WARNING: drivers/built-in.o(.data+0x40f8): Section mismatch in reference from the variable pl011_driver to the (unknown reference) .init.data:(unknown)
The variable pl011_driver references
the (unknown reference) __initdata (unknown)WARNING: drivers/built-in.o(.data+0x5ab4): Section mismatch in reference from the variable pl031_driver to the (unknown reference) .init.data:(unknown)
The variable pl031_driver references
the (unknown reference) __initdata (unknown)Basically, amba_id structures must not be __initdata. Also fix:
WARNING: drivers/built-in.o(.data+0x138): Section mismatch in reference from the variable pl061_gpio_driver to the function .init.text:pl061_probe()
The variable pl061_gpio_driver references
the function __init pl061_probe()which is an incorrectly annotated probe function. Fix it to reflect
the other AMBA bus probe functions by removing the __init attributation.Signed-off-by: Russell King
24 Jul, 2010
1 commit
-
Conflicts:
arch/sparc/kernel/prom_64.c
21 Jul, 2010
1 commit
-
My Collabora address is no longer enabled - update the MODULE_AUTHOR
fields of drivers to my current email address.Signed-off-by: Andres Salomon
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Jul, 2010
4 commits
-
Implement generic OF gpio hooks and thus make device-enabled GPIO chips
(i.e. the ones that have gpio_chip->dev specified) automatically attach
to the OpenFirmware subsystem. Which means that now we can handle I2C and
SPI GPIO chips almost* transparently.* "Almost" because some chips still require platform data, and for these
chips OF-glue is still needed, though with this change the glue will
be much smaller.Signed-off-by: Anton Vorontsov
Signed-off-by: Grant Likely
Cc: David Brownell
Cc: Bill Gatliff
Cc: Dmitry Eremin-Solenikov
Cc: Benjamin Herrenschmidt
Cc: Jean Delvare
Cc: Andrew Morton
CC: linux-kernel@vger.kernel.org
CC: devicetree-discuss@lists.ozlabs.org -
Currently the kernel uses the struct device_node.data pointer to resolve
a struct gpio_chip pointer from a device tree node. However, the .data
member doesn't provide any type checking and there aren't any rules
enforced on what it should be used for. There's no guarantee that the
data stored in it actually points to an gpio_chip pointer.Instead of relying on the .data pointer, this patch modifies the code
to add a lookup function which scans through the registered gpio_chips
and returns the gpio_chip that has a pointer to the specified
device_node.Signed-off-by: Grant Likely
CC: Andrew Morton
CC: Anton Vorontsov
CC: Grant Likely
CC: David Brownell
CC: Bill Gatliff
CC: Dmitry Eremin-Solenikov
CC: Benjamin Herrenschmidt
CC: Jean Delvare
CC: linux-kernel@vger.kernel.org
CC: devicetree-discuss@lists.ozlabs.org -
The OF gpio infrastructure is great for describing GPIO connections within
the device tree. However, using a GPIO binding still requires changes to
the gpio controller just to add an of_gpio structure. In most cases, the
gpio controller doesn't actually need any special support and the simple
OF gpio mapping function is more than sufficient. Additional, the current
scheme of using of_gpio_chip requires a convoluted scheme to maintain
1:1 mappings between of_gpio_chip and gpio_chip instances.If the struct of_gpio_chip data members were moved into struct gpio_chip,
then it would simplify the processing of OF gpio bindings, and it would
make it trivial to use device tree OF connections on existing gpiolib
controller drivers.This patch eliminates the of_gpio_chip structure and moves the relevant
fields into struct gpio_chip (conditional on CONFIG_OF_GPIO). This move
simplifies the existing code and prepares for adding automatic device tree
support to existing drivers.Signed-off-by: Grant Likely
Cc: Andrew Morton
Cc: Anton Vorontsov
Cc: Grant Likely
Cc: David Brownell
Cc: Bill Gatliff
Cc: Dmitry Eremin-Solenikov
Cc: Benjamin Herrenschmidt
Cc: Jean Delvare -
Hopefully it makes the code look nicer and makes it easier to extend
this function.Signed-off-by: Anton Vorontsov
Signed-off-by: Andrew Morton
Signed-off-by: Grant Likely
CC: devicetree-discuss@lists.ozlabs.org
CC: linux-kernel@vger.kernel.org
30 Jun, 2010
1 commit
-
Update Kconfig and Makefile in drivers/gpio to discourage inappropriate
addition of platform-specific code.[akpm@linux-foundation.org: fix tpyo]
Signed-by: David BrownellSigned-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 May, 2010
3 commits
-
rdc_gpio_set_value_impl has the gpio data registers 1 and 2 inverted, fix this.
Signed-off-by: Bernhard Loos
Signed-off-by: Florian Fainelli
Signed-off-by: Samuel Ortiz -
The rdc321x southbridge PCI device has no MEM PCI resources that we could
pass to mfd_add_devices. Since 33254dd5, mfd_add_device checks for the
mem_base argument that we set to NULL. Changing the resources passed to
our MFD cells from IORESOURCE_MEM to IORESOURCE_IO fixes that. Since we use
those resources as offsets to the PCI configuration space base address of
the southbridge device this is also more adequate.Signed-off-by: Florian Fainelli
Signed-off-by: Samuel Ortiz -
Fix rdc321x-southbridge build: GPIO_RDC321X needs to select
MFD_CORE so that the core is built at the same (or higher)
tristate level.rdc321x-southbridge.c:(.devinit.text+0x6103): undefined reference to `mfd_add_devices'
rdc321x-southbridge.c:(.devexit.text+0xe5f): undefined reference to `mfd_remove_devices'Signed-off-by: Randy Dunlap
Cc: Florian Fainelli
Signed-off-by: Samuel Ortiz
