Some of the gpio chips of exynos4 are assigned a default gpio config without
the exynos4 specific pull up/down callbacks which resulted in incorrect
setting of pull up/down configuration.
Fix this by adding two new exynos4 specific entries in the array of default
configs with set_pull and get_pull callbacks set to exynos4 specific callbacks
The new default gpio configs can then be used for exynos4 gpio chips.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Only register gpio banks provided by SoC instead of the maximum possible
to lessen confusion, get rid of a warning from gpiolib and stop it from
eating into the extra gpios for configs with S3C24XX_GPIO_EXTRA != 0.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Commit 1b39d5f2cc introduced new common gpio driver for all Samsung GPIO
SoCs. The new driver use wrong configuration setup for all gpio pins on
S5PC100 and S5PV210 SoCs and external interrupt lines on Exynos4 SoCs.
This patch fixes this issue.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Commit 1b39d5f2cc introduced new common gpio driver for all Samsung GPIO
SoCs. The new driver doesn't correctly register GPIO interrupts on
Samsung Exynos4 SoCs. This is caused by a typo in define name. This
patch fixes this issue.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Commit 1b39d5f2cc introduced new common gpio driver for all Samsung GPIO
SoCs. The new driver doesn't work correctly on Samsung Exynos4 SoC. It
fails to set configuration for all but external interrupt pins. This
patch fixes this issue.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch adds support for Samsung GPIOs with one gpio driver
and removes old GPIO drivers which are drivers/gpio-s3c24xx.c,
gpio-s3c64xx.c, gpio-s5p64x0.c, gpio-s5pc100.c, gpio-s5pv210.c,
gpio-exynos4.c, gpio-plat-samsung.c, plat-samsung/gpio-config.c
and gpio.c to support each Samsung SoCs before. Because the
gpio-samsung.c can replace old Samsung GPIO drivers.
Basically, the gpio-samsung.c has been made by their merging
and removing duplicated definitions.
Note: gpio-samsung.c includes some SoC dependent codes and it
will be replaced next time.
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
[kgene.kim@samsung.com: squash the removing and adding patches]
[kgene.kim@samsung.com: fixes bug during to register of gpio_chips]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Building a kernel with hotplug disabled results in a link failure:
`bgpio_remove' referenced in section `___ksymtab_gpl+bgpio_remove' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
This is because of bgpio_remove() is exported. It is illegal to export
symbols which are discarded either at link time or as part of an
init/exit section.
Fix this by dropping the __devexit attributation from bgpio_remove().
Also drop the __devinit attributation from bgpio_init().
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Migrate the driver for the v7-based MSM chips into drivers/gpio. The
driver is unchanged, only moved.
Change-Id: I810db5b50b71cdca4e869aa0d0310f7f48781a55
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Migrate the driver for the v6-based MSM chips into drivers/gpio. The
driver is unchanged, only moved.
Change-Id: I03ba597b95b4d62b42da112a8efac88d67aa40f9
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
TPS65912 has five GPIOs that can be configured for different
purposes.
Signed-off-by: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf (platform: prefix MODALIAS
with "platform:"), the platform modalias is prefixed with "platform:".
This patch changes the MODULE_ALIAS to "platform:ab8500-gpio".
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits)
fs: Merge split strings
treewide: fix potentially dangerous trailing ';' in #defined values/expressions
uwb: Fix misspelling of neighbourhood in comment
net, netfilter: Remove redundant goto in ebt_ulog_packet
trivial: don't touch files that are removed in the staging tree
lib/vsprintf: replace link to Draft by final RFC number
doc: Kconfig: `to be' -> `be'
doc: Kconfig: Typo: square -> squared
doc: Konfig: Documentation/power/{pm => apm-acpi}.txt
drivers/net: static should be at beginning of declaration
drivers/media: static should be at beginning of declaration
drivers/i2c: static should be at beginning of declaration
XTENSA: static should be at beginning of declaration
SH: static should be at beginning of declaration
MIPS: static should be at beginning of declaration
ARM: static should be at beginning of declaration
rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check
Update my e-mail address
PCIe ASPM: forcedly -> forcibly
gma500: push through device driver tree
...
Fix up trivial conflicts:
- arch/arm/mach-ep93xx/dma-m2p.c (deleted)
- drivers/gpio/gpio-ep93xx.c (renamed and context nearby)
- drivers/net/r8169.c (just context changes)
* 'gpio/next' of git://git.secretlab.ca/git/linux-2.6: (61 commits)
gpio/mxc/mxs: fix build error introduced by the irq_gc_ack() renaming
mcp23s08: add i2c support
mcp23s08: isolate spi specific parts
mcp23s08: get rid of setup/teardown callbacks
gpio/tegra: dt: add binding for gpio polarity
mcp23s08: remove unused work queue
gpio/da9052: remove a redundant assignment for gpio->da9052
gpio/mxc: add device tree probe support
ARM: mxc: use ARCH_NR_GPIOS to define gpio number
gpio/mxc: get rid of the uses of cpu_is_mx()
gpio/mxc: add missing initialization of basic_mmio_gpio shadow variables
gpio: Move mpc5200 gpio driver to drivers/gpio
GPIO: DA9052 GPIO module v3
gpio/tegra: Use engineering names in DT compatible property
of/gpio: Add new method for getting gpios under different property names
gpio/dt: Refine GPIO device tree binding
gpio/ml-ioh: fix off-by-one for displaying variable i in dev_err
gpio/pca953x: Deprecate meaningless device-tree bindings
gpio/pca953x: Remove dynamic platform data pointer
gpio/pca953x: Fix IRQ support.
...
The following commit renames irq_gc_ack() to irq_gc_ack_set_bit(),
and makes gpio-mxc and gpio-mxs fail to build.
659fb32d1b67476f4ade25e9ea0e2642a5b9c4b5
genirq: replace irq_gc_ack() with {set,clr}_bit variants (fwd)
The patch fixed a couple of typo of comma to semicolon.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Add i2c bindings for the mcp230xx devices. This is quite a lot simpler
than the spi one as there's no funky sub addressing done (one struct
i2c_client per struct gpio_chip).
The mcp23s08_platform_data structure is reused for i2c, even though
only a single mcp23s08_chip_info structure is needed.
To use, simply fill out a platform_data structure and pass it in
i2c_board_info, E.G.:
static const struct mcp23s08_platform_data mcp23017_data = {
.chip[0] = {
.pullups = 0x00ff,
},
.base = 240,
};
static struct i2c_board_info __initdata i2c_devs[] = {
{ I2C_BOARD_INFO("mcp23017", 0x20),
.platform_data = &smartview_mcp23017_data, },
...
};
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Change spi member of struct mcp23s08 to be a ops-specific opaque data
pointer, and move spi specific knowledge out of mcp23s08_probe_one().
No functional change, but is needed to add i2c support.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
There's no in-tree users, and bus notifiers are more generic anyway.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
The patch adds device tree probe support for gpio-mxc driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
The patch removes all the uses of cpu_is_mx(). Instead, it utilizes
platform_device_id to distinguish the different gpio types, IMX1_GPIO
on i.mx1, IMX21_GPIO on i.mx21 and i.mx27, IMX31_GPIO on all other
i.mx SoCs.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
The wrong bit was masked when acking langwell gpio interrupts.
Reason for maskig the wrong bit was probably because__ffs() and ffs() functions
return bit indexes differently (0..31 vs 1..32)
This fixes langwell based devices from hanging when a gpio interrupt is
triggered and undoes the breakage which occurred in change set
732063b92bb727b27e61580ce278dddefe31c6ad
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
The bgpio_init() function does not initialise the shadow register for
the GPIO direction register. Thus, when configuring the first GPIO with
gpio_set_direction() all other GPIOs of the same bank will be
configured as inputs. Since the bgpio layer cannot know whether the
register is readable, the initialisation should be done by the caller
of bgpio_init().
Also, the 'data' shadow variable that is used inside basic_mmio_gpio
to cache the current value of the GPIO_DR register is initialised from
the GPIO_PSR register within bgpio_init(). Thus when setting the
output value of a certain GPIO, the other GPIO outputs of the same
bank will be set or cleared depending on the pin state of the GPIO
inputs during bgpio_init().
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
GPIO drivers are getting consolidated into drivers/gpio. While at it,
change the driver name to mpc5200-gpio* to avoid collisions.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
DA9052 PMIC has 16 bit GPIO bus for peripheral control.
This patch add support for the GPIO pins on the DA9052.
Signed-off-by: David Dajun Chen <dchen@diasemi.com>
Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Engineering names are more stable than marketing names. Hence, use them
for Device Tree compatible properties instead.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Many stupid corrections of duplicated includes based on the output of
scripts/checkincludes.pl.
Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
with the "for (; i != 0; i--)" sytax, i-- will be executed after the iteration.
thus dev_err shows wrong i value.
Switch to "while(--i >= 0)" which is better in readability.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
The property 'polarity' is handled by the GPIO core, and the 'gpio-base'
should be assigned automatically. It is meaningless in the device-tree,
since GPIO's are identified by the "chip-name"/offset pair.
This way, the whole pca953x_get_alt_pdata() can hopefully soon go away.
We still need to check whether we really want GPIO-interrupt functionality
by simply looking if the I2C node has an interrupts property defined, since
this property is not used for anything else.
Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
In the case that we obtain device-tree data to fill in platform_data, the new
platform data struct was dynamically allocated, but the pointer to it was not
used everywhere it should. It seems easier to fix this issue by removing the
dynamic allocation altogether since its data is only used during driver
probing.
Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
It seems that in the normal case, IRQ_NOREQUEST needs to be explicitly
cleared, otherwise claiming the interrupt fails.
In the case of sparse interrupts, the descriptor needs to be allocated
first.
Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Remove cpu_is_* checks from gpio_show_revision() by passing in the
revision address offset from platform data. SoCs with no revision
register (15xx, 7xx, and all MPUIOs) use -1 (actually, USHRT_MAX) to
signify no register.
While here, all GPIO banks are assumed to be the same revision, so fix
show_revision() to only show the revision for the first bank it finds.
This removes duplicate GPIO revision prints during boot.
Thanks to Charulatha V <charu@ti.com> for finding/fixing a few -1s
that were missed in the original patch.
Signed-off-by: Kevin Hilman <khilman@ti.com>
Make _set_gpio_wakeup() generic by removing ifdefs. Code for the
various SoCs/bank-methods was already the same, except for the
non-wakeup GPIO checking. But that flag is set on a per-SoC basis, so
can be used for all SoCs.
While here, use dev_err() and remove GPIO bank calculation assumption
based on subtracting bank pointers.
Signed-off-by: Kevin Hilman <khilman@ti.com>
These functions are useless. They are only called in a few places,
and where they are called, the GPIO has already been converted from an
IRQ or masked, so these functions will never fail.
Signed-off-by: Kevin Hilman <khilman@ti.com>
MPUIO banks have their own dedicated IRQ chip interface, separate from
the "normal" GPIO banks. Convert the MPUIO IRQ chip over to using
the new generic IRQ chip interface.
Signed-off-by: Kevin Hilman <khilman@ti.com>
Cleanup GPIO IRQ enable/disable handling by removing SoC-specific
Also split enable/disable IRQ into separate functions for better
readability and also facilitate potentially moving to generic irq_chip
in the future.
Signed-off-by: Kevin Hilman <khilman@ti.com>
Cleanup IRQ status handling by passing IRQ status register offsets
via platform data.
Cleans up clearing of GPIO IRQ status and GPIO ISR handler.
Signed-off-by: Kevin Hilman <khilman@ti.com>
Add register offset fields to GPIO platform_data for registers.
This patch adds registers that control direction, input and output
data. Using these register offsets in the common driver allows
removal of #ifdefs and greatly improves readability.
Also create dedicated data out functions: one for banks with dedicated
set/clear registers, and another for banks with a single mask
register.
Signed-off-by: Kevin Hilman <khilman@ti.com>
