summaryrefslogtreecommitdiffstats
path: root/drivers/gpio/gpio-pca953x.c
AgeCommit message (Collapse)AuthorFilesLines
2012-12-11Merge tag 'driver-core-3.8-rc1' of ↵Linus Torvalds1-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg Kroah-Hartman: "Here's the large driver core updates for 3.8-rc1. The biggest thing here is the various __dev* marking removals. This is going to be a pain for the merge with different subsystem trees, I know, but all of the patches included here have been ACKed by their various subsystem maintainers, as they wanted them to go through here. If this is too much of a pain, I can pull all of them out of this tree and just send you one with the other fixes/updates and then, after 3.8-rc1 is out, do the rest of the removals to ensure we catch them all, it's up to you. The merges should all be trivial, and Stephen has been doing them all in linux-next for a few weeks now quite easily. Other than the __dev* marking removals, there's nothing major here, some firmware loading updates and other minor things in the driver core. All of these have (much to Stephen's annoyance), been in linux-next for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" Fixed up trivial conflicts in drivers/gpio/gpio-{em,stmpe}.c due to gpio update. * tag 'driver-core-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (93 commits) modpost.c: Stop checking __dev* section mismatches init.h: Remove __dev* sections from the kernel acpi: remove use of __devinit PCI: Remove __dev* markings PCI: Always build setup-bus when PCI is enabled PCI: Move pci_uevent into pci-driver.c PCI: Remove CONFIG_HOTPLUG ifdefs unicore32/PCI: Remove CONFIG_HOTPLUG ifdefs sh/PCI: Remove CONFIG_HOTPLUG ifdefs powerpc/PCI: Remove CONFIG_HOTPLUG ifdefs mips/PCI: Remove CONFIG_HOTPLUG ifdefs microblaze/PCI: Remove CONFIG_HOTPLUG ifdefs dma: remove use of __devinit dma: remove use of __devexit_p firewire: remove use of __devinitdata firewire: remove use of __devinit leds: remove use of __devexit leds: remove use of __devinit leds: remove use of __devexit_p mmc: remove use of __devexit ...
2012-11-28gpio: remove use of __devinitBill Pemberton1-3/+3
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Kevin Hilman <khilman@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-17gpio: pca953x: Add compatible strings to gpio-pca953x driverMaxime Ripard1-0/+29
Even though the device tree binding code was already written, the compatible strings were not yet in the driver. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-11-17gpio: pca953x: Register an IRQ domainMaxime Ripard1-6/+20
The PCA953x used to register no IRQ domain, which made it impossible to use it as an interrupt-parent from the device tree. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-07-17gpio/pca953x: increase variables size to support 24 bit of dataLeed Aguilar1-14/+14
Increase variable size from u16 to u32 to allocate 24 bit of data required for the TCA6424 I/O expander device type. Signed-off-by: Leed Aguilar <leed.aguilar@ti.com> Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-07-17GPIO: PCA953X: Increase size of invert variable to support 24 bitChandrabhanu Mahapatra1-5/+6
TCA6424 is a low voltage 24 bit I2C and SMBus I/O expander of pca953x family similar to its 16 bit predecessor TCA6416. It comes with three 8-bit active Input, Output, Polarity Inversion and Configuration registers each. The polarity of Input ports can be reversed by setting the appropiate bit in Polarity Inversion registers. The variables corresponding to Input, Output and Configuration registers have already been updated to support 24 bit values. This patch thus updates the invert variable of PCA953X platform data to support 24 bit. Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-05-25gpio/tca6424: merge I2C transactions, remove castAndreas Schallenberg1-12/+16
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>
2012-05-18Add support for TCA6424AAndreas Schallenberg1-13/+30
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>
2011-11-21gpio: pca953x: Staticise pca953x_get_altdata()Mark Brown1-2/+2
It's not used outside of the driver so doesn't need to be exported, and sparse notices this and complains about it. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-15Merge branch 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds1-7/+4
* 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6: gpio: pca953x: propagate the errno from the chip_init functions gpio: pca953x: remove unneeded check for chip type gpio/omap: check return value from irq_alloc_generic_chip gpio/omap: replace MOD_REG_BIT macro with static inline
2011-10-29gpio: pca953x: propagate the errno from the chip_init functionsWolfram Sang1-6/+5
Initializing the chips may return with an error, but this error gets dropped in probe(). Propagate this further to the driver core. Also, simplify returning the error in one of the init functions. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-29gpio: pca953x: remove unneeded check for chip typeWolfram Sang1-3/+1
We can assume our own device_id table is correct, so remove checking if the chip type is valid. (The check was bogus anyway: If it found an invalid entry, it returned with 0!) This is in preparation for further cleanups. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-13gpio-pca953x: fix gpio_baseHartmut Knaack1-0/+1
gpio_base was set to 0 if no system platform data or open firmware platform data was provided. This led to conflicts, if any other gpiochip with a gpiobase of 0 was instantiated already. Setting it to -1 will automatically use the first one available. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16gpio/pca953x: Deprecate meaningless device-tree bindingsDavid Jander1-2/+9
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>
2011-06-16gpio/pca953x: Remove dynamic platform data pointerDavid Jander1-49/+28
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>
2011-06-16gpio/pca953x: Fix IRQ support.David Jander1-1/+3
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>
2011-06-08gpio/pca953x: Fix warning of enabled interrupts in handlerDavid Jander1-3/+3
When using nested threaded irqs, use handle_nested_irq(). This function does not call the chip handler, so no handler is set. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-08gpio/pca953x: Interrupt pin is active-lowDavid Jander1-1/+1
The interrupt pin of the PCA953x is active low, and on the rising edge no interrupt should be produced. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-08gpio/pca953x: Fix IRQ support.David Jander1-1/+5
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>
2011-06-06gpio: reorganize driversGrant Likely1-0/+768
Sort the gpio makefile and enforce the naming convention gpio-*.c for gpio drivers. v2: cleaned up filenames in Kconfig and comment blocks v3: fixup use of BASIC_MMIO to GENERIC_GPIO for mxc Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 11:24:55 +0000