Commit Graph

613 Commits

Author SHA1 Message Date
Stephen Warren 4a3398ee9d gpio: tegra: Iterate over the correct number of banks
When Tegra30 support was added to the Tegra GPIO driver, a few places
which iterated over all banks were not converted to use the variable
tegra_gpio_bank_count rather than hard-coding the bank count. Fix this.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Olof Johansson <olof@lixom.net>
2012-04-04 13:13:18 -06:00
Stephen Warren 5c1e2c9dc6 gpio: tegra: fix register address calculations for Tegra30
Tegra20 and Tegra30 share the same register layout within registers, but
the addresses of the registers is a little different. Fix the driver to
cope with this.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Olof Johansson <olof@lixom.net>
2012-04-04 13:13:13 -06:00
Linus Torvalds 12679a2d7e Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull more ARM updates from Russell King.

This got a fair number of conflicts with the <asm/system.h> split, but
also with some other sparse-irq and header file include cleanups.  They
all looked pretty trivial, though.

* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (59 commits)
  ARM: fix Kconfig warning for HAVE_BPF_JIT
  ARM: 7361/1: provide XIP_VIRT_ADDR for no-MMU builds
  ARM: 7349/1: integrator: convert to sparse irqs
  ARM: 7259/3: net: JIT compiler for packet filters
  ARM: 7334/1: add jump label support
  ARM: 7333/2: jump label: detect %c support for ARM
  ARM: 7338/1: add support for early console output via semihosting
  ARM: use set_current_blocked() and block_sigmask()
  ARM: exec: remove redundant set_fs(USER_DS)
  ARM: 7332/1: extract out code patch function from kprobes
  ARM: 7331/1: extract out insn generation code from ftrace
  ARM: 7330/1: ftrace: use canonical Thumb-2 wide instruction format
  ARM: 7351/1: ftrace: remove useless memory checks
  ARM: 7316/1: kexec: EOI active and mask all interrupts in kexec crash path
  ARM: Versatile Express: add NO_IOPORT
  ARM: get rid of asm/irq.h in asm/prom.h
  ARM: 7319/1: Print debug info for SIGBUS in user faults
  ARM: 7318/1: gic: refactor irq_start assignment
  ARM: 7317/1: irq: avoid NULL check in for_each_irq_desc loop
  ARM: 7315/1: perf: add support for the Cortex-A7 PMU
  ...
2012-03-29 16:53:48 -07:00
Linus Torvalds 7bf97e1d5a GPIO changes for v3.4
Primarily gpio device driver changes with some minor side effects
 under arch/arm and arch/x86.  Also includes a few core changes such as
 explicitly supporting (electrical) open source and open drain outputs
 and some help for parsing gpio devicetree properties.
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Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6

Pull GPIO changes for v3.4 from Grant Likely:
 "Primarily gpio device driver changes with some minor side effects
  under arch/arm and arch/x86.  Also includes a few core changes such as
  explicitly supporting (electrical) open source and open drain outputs
  and some help for parsing gpio devicetree properties."

Fix up context conflict due to Laxman Dewangan adding sleep control for
the tps65910 driver separately for gpio's and regulators.

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6: (34 commits)
  gpio/ep93xx: Remove unused inline function and useless pr_err message
  gpio/sodaville: Mark broken due to core irqdomain migration
  gpio/omap: fix redundant decoding of gpio offset
  gpio/omap: fix incorrect update to context.irqenable1
  gpio/omap: fix incorrect context restore logic in omap_gpio_runtime_*
  gpio/omap: fix missing dataout context save in _set_gpio_dataout_reg
  gpio/omap: fix _set_gpio_irqenable implementation
  gpio/omap: fix trigger type to unsigned
  gpio/omap: fix wakeup_en register update in _set_gpio_wakeup()
  gpio: tegra: tegra_gpio_config shouldn't be __init
  gpio/davinci: fix enabling unbanked GPIO IRQs
  gpio/davinci: fix oops on unbanked gpio irq request
  gpio/omap: Fix section warning for omap_mpuio_alloc_gc()
  ARM: tegra: export tegra_gpio_{en,dis}able
  gpio/gpio-stmpe: Fix the value returned by _get_value routine
  Documentation/gpio.txt: Explain expected pinctrl interaction
  GPIO: LPC32xx: Add output reading to GPO P3
  GPIO: LPC32xx: Fix missing bit selection mask
  gpio/omap: fix wakeups on level-triggered GPIOs
  gpio/omap: Fix IRQ handling for SPARSE_IRQ
  ...
2012-03-28 14:08:46 -07:00
Linus Torvalds 30304e5a79 MFD changes for 3.4
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Merge tag 'mfd_3.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6

Pull MFD changes from Samuel Ortiz:
 - 4 new drivers: Freescale i.MX on-chip Anatop, Ricoh's RC5T583 and
   TI's TPS65090 and TPS65217.
 - New variants support (8420, 8520 ab9540), cleanups and bug fixes for
   the abx500 and db8500 ST-E chipsets.
 - Some minor fixes and update for the wm8994 from Mark.
 - The beginning of a long term TWL cleanup effort coming from the TI
   folks.
 - Various fixes and cleanups for the s5m, TPS659xx, pm860x, and MAX8997
   drivers.

Fix up trivial conflicts due to duplicate patches and header file
cleanups (<linux/device.h> removal etc).

* tag 'mfd_3.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (97 commits)
  gpio/twl: Add DT support to gpio-twl4030 driver
  gpio/twl: Allocate irq_desc dynamically for SPARSE_IRQ support
  mfd: Detach twl6040 from the pmic mfd driver
  mfd: Replace twl-* pr_ macros by the dev_ equivalent and do various cleanups
  mfd: Micro-optimization on twl4030 IRQ handler
  mfd: Make twl4030 SIH SPARSE_IRQ capable
  mfd: Move twl-core IRQ allocation into twl[4030|6030]-irq files
  mfd: Remove references already defineid in header file from twl-core
  mfd: Remove unneeded header from twl-core
  mfd: Make twl-core not depend on pdata->irq_base/end
  ARM: OMAP2+: board-omap4-*: Do not use anymore TWL6030_IRQ_BASE in board files
  mfd: Return twl6030_mmc_card_detect IRQ for board setup
  Revert "mfd: Add platform data for MAX8997 haptic driver"
  mfd: Add support for TPS65090
  mfd: Add some da9052-i2c section annotations
  mfd: Build rtc5t583 only if I2C config is selected to y.
  mfd: Add anatop mfd driver
  mfd: Fix compilation error in tps65910.h
  mfd: Add 8420 variant to db8500-prcmu
  mfd: Add 8520 PRCMU variant to db8500-prcmu
  ...
2012-03-28 13:56:35 -07:00
Linus Torvalds ff877c498e ARM: More SoC driver updates
This branch contains a handful of driver updates, mostly to
 the LPC32xx platform but also for Samsung EXYNOS and Davinci.
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Merge tag 'drivers2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: More SoC driver updates" from Olof Johansson:
 "This branch contains a handful of driver updates, mostly to the
  LPC32xx platform but also for Samsung EXYNOS and Davinci.

  It had a few context conflicts against patches already merged through
  fixes-non-critical.  We should have resolved this early during the
  development cycle by pulling them in as a dependency, instead I did it
  after the fact this time."

* tag 'drivers2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  gpio/samsung: use ioremap() for EXYNOS4 GPIOlib
  gpio/samsung: add support GPIOlib for EXYNOS5250
  ARM: EXYNOS: add support GPIO for EXYNOS5250
  ARM: LPC32xx: Ethernet support
  ARM: LPC32xx: USB Support
  ARM: davinci: dm644x evm: add support for VPBE display
  ARM: davinci: dm644x: add support for v4l2 video display
  ARM: EXYNOS: Hook up JPEG PD to generic PD infrastructure
  ARM: EXYNOS: Hook up G2D PD to generic PD infrastructure
  arm: lpc32xx: phy3250: add rtc & touch device
  ARM: LPC32xx: clock.c: Clock registration fixes
  ARM: LPC32xx: clock.c: jiffies wrapping
  ARM: LPC32xx: clock.c: Missing header file
  ARM: LPC32XX: Remove broken non-static declaration
  ARM: LPC32xx: clock.c: Fix mutex lock issues
  ARM: LPC32xx: clock.c: warning fix
  ARM: LPC32xx: Added lpc32xx_defconfig
2012-03-28 12:17:06 -07:00
Linus Torvalds 9e4db1c3ee Merge branch 'platforms' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM platform updates from Russell King:
 "This covers platform stuff for platforms I have a direct interest in
  (iow, I have the hardware).  Essentially:
   - as we no longer support any other Acorn platforms other than RiscPC
     anymore, we can collect all that code into mach-rpc.
   - convert Acorn expansion card stuff to use IRQ allocation functions,
     and get rid of NO_IRQ from there.
   - cleanups to the ebsa110 platform to move some private stuff out of
     its header files.
   - large amount of SA11x0 updates:
   - conversion of private DMA implementation to DMA engine support
     (this actually gives us greater flexibility in drivers over the old
     API.)
   - re-worked ucb1x00 updates - convert to genirq, remove sa11x0
     dependencies, fix various minor issues
   - move platform specific sa11x0 framebuffer data into platform files
     in arch/arm instead of keeping this in the driver itself
   - update sa11x0 IrDA driver for DMA engine, and allow it to use DMA
     for SIR transmissions as well as FIR
   - rework sa1111 support for genirq, and irq allocation
   - fix sa1111 IRQ support so it works again
   - use sparse IRQ support

  After this, I have one more pull request remaining from my current
  set, which I think is going to be the most problematical as it
  generates 8 conflicts."

Fixed up the trivial conflict in arch/arm/mach-rpc/Makefile as per
Russell.

* 'platforms' of git://git.linaro.org/people/rmk/linux-arm: (125 commits)
  ARM: 7343/1: sa11x0: convert to sparse IRQ
  ARM: 7342/2: sa1100: prepare for sparse irq conversion
  ARM: 7341/1: input: prepare jornada720 keyboard and ts for sa11x0 sparse irq
  ARM: 7340/1: rtc: sa1100: include mach/irqs.h instead of asm/irq.h
  ARM: sa11x0: remove unused DMA controller definitions
  ARM: sa11x0: remove old SoC private DMA driver
  USB: sa1111: add hcd .reset method
  USB: sa1111: add OHCI shutdown methods
  USB: sa1111: reorganize ohci-sa1111.c
  USB: sa1111: get rid of nasty printk(KERN_DEBUG "%s: ...", __FILE__)
  USB: sa1111: sparse and checkpatch cleanups
  ARM: sa11x0: don't static map sa1111
  ARM: sa1111: use dev_err() rather than printk()
  ARM: sa1111: cleanup sub-device registration and unregistration
  ARM: sa1111: only setup DMA for DMA capable devices
  ARM: sa1111: register sa1111 devices with dmabounce in bus notifier
  ARM: sa1111: move USB interface register definitions to ohci-sa1111.c
  ARM: sa1111: move PCMCIA interface register definitions to sa1111_generic.c
  ARM: sa1111: move PS/2 interface register definitions to sa1111p2.c
  ARM: sa1111: delete unused physical GPIO register definitions
  ...
2012-03-27 18:17:02 -07:00
Linus Torvalds 34800598b2 ARM: driver specific updates
These are all specific to some driver. They are typically the platform
 side of a change in the drivers directory, such as adding a new driver
 or extending the interface to the platform. In cases where there is no
 maintainer for the driver, or the maintainer prefers to have the
 platform changes in the same branch as the driver changes, the patches
 to the drivers are included as well.
 
 A much smaller set of driver updates that depend on other branches
 getting merged first will be sent later.
 
 The new export of tegra_chip_uid conflicts with other changes in fuse.c.
 In rtc-sa1100.c, the global removal of IRQF_DISABLED conflicts with
 the cleanup of the interrupt handling of that driver.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: driver specific updates" from Arnd Bergmann:
 "These are all specific to some driver.  They are typically the
  platform side of a change in the drivers directory, such as adding a
  new driver or extending the interface to the platform.  In cases where
  there is no maintainer for the driver, or the maintainer prefers to
  have the platform changes in the same branch as the driver changes,
  the patches to the drivers are included as well.

  A much smaller set of driver updates that depend on other branches
  getting merged first will be sent later.

  The new export of tegra_chip_uid conflicts with other changes in
  fuse.c.  In rtc-sa1100.c, the global removal of IRQF_DISABLED
  conflicts with the cleanup of the interrupt handling of that driver.

  Signed-off-by: Arnd Bergmann <arnd@arndb.de>"

Fixed up aforementioned trivial conflicts.

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (94 commits)
  ARM: SAMSUNG: change the name from s3c-sdhci to exynos4-sdhci
  mmc: sdhci-s3c: add platform data for the second capability
  ARM: SAMSUNG: support the second capability for samsung-soc
  ARM: EXYNOS: add support DMA for EXYNOS4X12 SoC
  ARM: EXYNOS: Add apb_pclk clkdev entry for mdma1
  ARM: EXYNOS: Enable MDMA driver
  regulator: Remove bq24022 regulator driver
  rtc: sa1100: add OF support
  pxa: magician/hx4700: Convert to gpio-regulator from bq24022
  ARM: OMAP3+: SmartReflex: fix error handling
  ARM: OMAP3+: SmartReflex: fix the use of debugfs_create_* API
  ARM: OMAP3+: SmartReflex: micro-optimization for sanity check
  ARM: OMAP3+: SmartReflex: misc cleanups
  ARM: OMAP3+: SmartReflex: move late_initcall() closer to its argument
  ARM: OMAP3+: SmartReflex: add missing platform_set_drvdata()
  ARM: OMAP3+: hwmod: add SmartReflex IRQs
  ARM: OMAP3+: SmartReflex: clear ERRCONFIG_VPBOUNDINTST only on a need
  ARM: OMAP3+: SmartReflex: Fix status masking in ERRCONFIG register
  ARM: OMAP3+: SmartReflex: Add a shutdown hook
  ARM: OMAP3+: SmartReflex Class3: disable errorgen before disable VP
  ...

Conflicts:
	arch/arm/mach-tegra/Makefile
	arch/arm/mach-tegra/fuse.c
	drivers/rtc/rtc-sa1100.c
2012-03-27 16:41:24 -07:00
Linus Torvalds d61b7a572b ARM: global cleanups
Quite a bit of code gets removed, and some stuff moved around, mostly
 the old samsung s3c24xx stuff. There should be no functional changes
 in this series otherwise. Some cleanups have dependencies on other
 arm-soc branches and will be sent in the second round.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: global cleanups" from Arnd Bergmann:
 "Quite a bit of code gets removed, and some stuff moved around, mostly
  the old samsung s3c24xx stuff.  There should be no functional changes
  in this series otherwise.  Some cleanups have dependencies on other
  arm-soc branches and will be sent in the second round.

  Signed-off-by: Arnd Bergmann <arnd@arndb.de>"

Fixed up trivial conflicts mainly due to #include's being changes on
both sides.

* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (121 commits)
  ep93xx: Remove unnecessary includes of ep93xx-regs.h
  ep93xx: Move EP93XX_SYSCON defines to SoC private header
  ep93xx: Move crunch code to mach-ep93xx directory
  ep93xx: Make syscon access functions private to SoC
  ep93xx: Configure GPIO ports in core code
  ep93xx: Move peripheral defines to local SoC header
  ep93xx: Convert the watchdog driver into a platform device.
  ep93xx: Use ioremap for backlight driver
  ep93xx: Move GPIO defines to gpio-ep93xx.h
  ep93xx: Don't use system controller defines in audio drivers
  ep93xx: Move PHYS_BASE defines to local SoC header file
  ARM: EXYNOS: Add clock register addresses for EXYNOS4X12 bus devfreq driver
  ARM: EXYNOS: add clock registers for exynos4x12-cpufreq
  PM / devfreq: update the name of EXYNOS clock registers that were omitted
  PM / devfreq: update the name of EXYNOS clock register
  ARM: EXYNOS: change the prefix S5P_ to EXYNOS4_ for clock
  ARM: EXYNOS: use static declaration on regarding clock
  ARM: EXYNOS: replace clock.c for other new EXYNOS SoCs
  ARM: OMAP2+: Fix build error after merge
  ARM: S3C24XX: remove call to s3c24xx_setup_clocks
  ...
2012-03-27 16:03:32 -07:00
H Hartley Sweeten c77c8a6fd3 gpio/ep93xx: Remove unused inline function and useless pr_err message
Minor removal of an unused inline function and a useless pr_err message.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-25 21:25:56 -07:00
Rob Herring f314f33be7 ARM: 7342/2: sa1100: prepare for sparse irq conversion
In preparation to convert SA1100 to sparse irq, set .nr_irqs for each machine
and explicitly include mach/irqs.h as needed.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-25 23:57:20 +01:00
Grant Likely 8194c7c4d5 gpio/sodaville: Mark broken due to core irqdomain migration
The sodaville driver doesn't build anymore due to the transition to
common irq_domain in the core code.  It needs to be reworked, but
the rework isn't trivial.  Since this is a new driver anyway for
v3.4, mark it as broken now and a fixup patch can re-enable it when
the rework change has been tested.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-23 08:56:10 +00:00
Grant Likely 5430528b8b Merge branch 'for_3.4/fixes/gpio-2' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into gpio/next 2012-03-23 08:48:06 +00:00
Benoit Cousson b8589e2a80 gpio/twl: Add DT support to gpio-twl4030 driver
Add the DT support for the I2C GPIO expander inside the twl4030.

Note: The pdata parameters still have to be properly adapted using
dedicated bindings.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:05:55 +01:00
Benoit Cousson 2d9dd99b44 gpio/twl: Allocate irq_desc dynamically for SPARSE_IRQ support
Do not use the board pdata for irq_base, but allocate them dynamically
to allow a proper support of SPARSE_IRQ.

Fix an unneeded line wrap.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:05:53 +01:00
Benoit Cousson f01b1f90bf mfd: Make twl4030 SIH SPARSE_IRQ capable
twl4030 is using a two level irq controllers infrastruture.
So far, only the first level was using dynamic irq_desc allocation
to be able to have irq_domain support for device tree.
There is a need to allocate separate irq_descs for the SIH too to
avoid hacking the first level with interrupts from the second level.

Add an irq_base parameter to allow the caller to provide the base from
pdata or from dynamic allocation.

Affect TWL4030_NR_IRQS to the twl-core IRQs only.

Moreover that will allow the extraction of the of_node pointer for further
Device Tree conversion.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:04:54 +01:00
Linus Torvalds 5375871d43 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc merge from Benjamin Herrenschmidt:
 "Here's the powerpc batch for this merge window.  It is going to be a
  bit more nasty than usual as in touching things outside of
  arch/powerpc mostly due to the big iSeriesectomy :-) We finally got
  rid of the bugger (legacy iSeries support) which was a PITA to
  maintain and that nobody really used anymore.

  Here are some of the highlights:

   - Legacy iSeries is gone.  Thanks Stephen ! There's still some bits
     and pieces remaining if you do a grep -ir series arch/powerpc but
     they are harmless and will be removed in the next few weeks
     hopefully.

   - The 'fadump' functionality (Firmware Assisted Dump) replaces the
     previous (equivalent) "pHyp assisted dump"...  it's a rewrite of a
     mechanism to get the hypervisor to do crash dumps on pSeries, the
     new implementation hopefully being much more reliable.  Thanks
     Mahesh Salgaonkar.

   - The "EEH" code (pSeries PCI error handling & recovery) got a big
     spring cleaning, motivated by the need to be able to implement a
     new backend for it on top of some new different type of firwmare.

     The work isn't complete yet, but a good chunk of the cleanups is
     there.  Note that this adds a field to struct device_node which is
     not very nice and which Grant objects to.  I will have a patch soon
     that moves that to a powerpc private data structure (hopefully
     before rc1) and we'll improve things further later on (hopefully
     getting rid of the need for that pointer completely).  Thanks Gavin
     Shan.

   - I dug into our exception & interrupt handling code to improve the
     way we do lazy interrupt handling (and make it work properly with
     "edge" triggered interrupt sources), and while at it found & fixed
     a wagon of issues in those areas, including adding support for page
     fault retry & fatal signals on page faults.

   - Your usual random batch of small fixes & updates, including a bunch
     of new embedded boards, both Freescale and APM based ones, etc..."

I fixed up some conflicts with the generalized irq-domain changes from
Grant Likely, hopefully correctly.

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (141 commits)
  powerpc/ps3: Do not adjust the wrapper load address
  powerpc: Remove the rest of the legacy iSeries include files
  powerpc: Remove the remaining CONFIG_PPC_ISERIES pieces
  init: Remove CONFIG_PPC_ISERIES
  powerpc: Remove FW_FEATURE ISERIES from arch code
  tty/hvc_vio: FW_FEATURE_ISERIES is no longer selectable
  powerpc/spufs: Fix double unlocks
  powerpc/5200: convert mpc5200 to use of_platform_populate()
  powerpc/mpc5200: add options to mpc5200_defconfig
  powerpc/mpc52xx: add a4m072 board support
  powerpc/mpc5200: update mpc5200_defconfig to fit for charon board
  Documentation/powerpc/mpc52xx.txt: Checkpatch cleanup
  powerpc/44x: Add additional device support for APM821xx SoC and Bluestone board
  powerpc/44x: Add support PCI-E for APM821xx SoC and Bluestone board
  MAINTAINERS: Update PowerPC 4xx tree
  powerpc/44x: The bug fixed support for APM821xx SoC and Bluestone board
  powerpc: document the FSL MPIC message register binding
  powerpc: add support for MPIC message register API
  powerpc/fsl: Added aliased MSIIR register address to MSI node in dts
  powerpc/85xx: mpc8548cds - add 36-bit dts
  ...
2012-03-21 18:55:10 -07:00
Tarun Kanti DebBarma 7fcca715de gpio/omap: fix redundant decoding of gpio offset
In gpio_get(), _get_gpio_datain() and _get_gpio_dataout() get rid of
un-necessary operation to compute gpio mask. The gpio offset passed
to gpio_get() is sufficient to do that.

Here is Russell's original comment:
Can someone explain to me this:

static int _get_gpio_datain(struct gpio_bank *bank, int gpio)
{
       void __iomem *reg = bank->base + bank->regs->datain;

       return (__raw_readl(reg) & GPIO_BIT(bank, gpio)) != 0;
}

static int gpio_get(struct gpio_chip *chip, unsigned offset)
{
       struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip);
       void __iomem *reg = bank->base;
       int gpio = chip->base + offset;
       u32 mask = GPIO_BIT(bank, gpio);

       if (gpio_is_input(bank, mask))
               return _get_gpio_datain(bank, gpio);
       else
               return _get_gpio_dataout(bank, gpio);
}

Given that bank->width on OMAP is either 32 or 16, and GPIO numbers for
any GPIO chip are always aligned to 32 or 16, why does this code bother
adding the chips base gpio number and then modulo the width?

Surely this means if - for argument sake - you registered a GPIO chip
with 8 lines followed by one with 16 lines, GPIO0..7 would be chip 0
bit 0..7, GPIO8..15 would be chip 1 bit 8..15, GPIO16..23 would be
chip 1 bit 0..7.

However, if you registered a GPIO chip with 16 lines first, it would
mean GPIO0..15 would be chip 0 bit 0..15, and GPIO16..31 would be
chip 1 bit 0..15.

Surely this kind of behaviour is not intended?

Is there a reason why the bitmask can't just be (1 << offset) where
offset is passed into these functions as GPIO number - chip->base ?

Reported-by: Russell King - ARM Linux <linux@arm.linux.org.uk>
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-21 10:21:24 +05:30
Tarun Kanti DebBarma 2a900eb74c gpio/omap: fix incorrect update to context.irqenable1
In _enable_gpio_irqbank() when bank->regs->set_irqenable is TRUE,
gpio_mask can be directly set by writing to set_irqenable register
without overwriting current value. In order to ensure the same is
stored in context.irqenable1, we must avoid overwriting it with
gpio_mask at the end of the function. Instead, update irqenable1
appropriately by OR'ing with gpio_mask.
For the case where bank->regs->set_irqenable is FALSE, irqenable1
can be directly overwritten with 'l' which holds correct computed
value.
        if (bank->regs->set_irqenable) {
                reg += bank->regs->set_irqenable;
                l = gpio_mask;
        } else {
                reg += bank->regs->irqenable;
                l = __raw_readl(reg);
                if (bank->regs->irqenable_inv)
                        l &= ~gpio_mask;
                else
                        l |= gpio_mask;
        }

Make similar change for _disable_gpio_irqbank().

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-21 10:18:54 +05:30
Tarun Kanti DebBarma 960edffe29 gpio/omap: fix incorrect context restore logic in omap_gpio_runtime_*
In omap_gpio_runtime_suspend/resume() the context save/restore should
be independent of bank->enabled_non_wakeup_gpios. This was preventing
context restore of GPIO lines which are not wakeup enabled.

Reported-by: Govindraj Raja <govindraj.raja@ti.com>
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-20 15:32:46 +05:30
Tarun Kanti DebBarma 2c836f7ea5 gpio/omap: fix missing dataout context save in _set_gpio_dataout_reg
There are two functions, _set_gpio_dataout_reg() and _set_gpio_dataout_mask()
which writes to dataout register and the dataout context must be saved.
It is missing in the first function, _set_gpio_dataout_reg(). Fix this.

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-20 15:29:52 +05:30
Tarun Kanti DebBarma 8276536cec gpio/omap: fix _set_gpio_irqenable implementation
This function should be capable of both enabling and disabling interrupts
based upon the *enable* parameter. Right now the function only enables
the interrupt and *enable* is not used at all. So add the interrupt
disable capability also using the parameter.

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-20 15:29:09 +05:30
Tarun Kanti DebBarma 00ece7e482 gpio/omap: fix trigger type to unsigned
The GPIO trigger parameter is of type unsigned.
enum {
        IRQ_TYPE_NONE           = 0x00000000,
        IRQ_TYPE_EDGE_RISING    = 0x00000001,
        IRQ_TYPE_EDGE_FALLING   = 0x00000002,
        IRQ_TYPE_EDGE_BOTH      = (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING),
        IRQ_TYPE_LEVEL_HIGH     = 0x00000004,
        IRQ_TYPE_LEVEL_LOW      = 0x00000008,
        IRQ_TYPE_LEVEL_MASK     = (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH),
        IRQ_TYPE_SENSE_MASK     = 0x0000000f,

        IRQ_TYPE_PROBE          = 0x00000010,
...
};
Even though gpio_irq_type(struct irq_data *d, unsigned type) has the right type
of parameter, the subsequent called functions set_gpio_triggering() and
set_gpio_trigger() wrongly makes it signed integer. Fix this.

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-20 15:29:04 +05:30
Tarun Kanti DebBarma 381a752f29 gpio/omap: fix wakeup_en register update in _set_gpio_wakeup()
There are two ways through which wakeup_en register can be programmed
using gpiolib APIs as shown below. It is seen that in the second case
in _set_gpio_wakeup(), even though bank->suspend_wakeup is updated
correctly, its value is not programmed in wakeup_en register. Fix this.

irq_set_type()->gpio_irq_type()->_set_gpio_triggering()->set_gpio_trigger()
irq_set_wake()->gpio_wake_enable()->_set_gpio_wakeup()

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-03-20 15:28:58 +05:30
Stephen Warren b0092f2665 gpio: tegra: tegra_gpio_config shouldn't be __init
This function is called from non-__init context, just like
tegra_gpio_enable()/disable(). Remove the __init annotation to avoid
section mismatch warnings during compile.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-19 21:49:41 +00:00
Martyn Welch e041013ac0 powerpc/85xx: Board support for GE IMP3A
Initial board support for the GE IMP3A, a 3U compactPCI card with a p2020
processor.

Signed-off-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-03-16 11:15:48 -05:00
Martyn Welch 6518bb69f4 gpio: Move GE GPIO driver to reside within GPIO subsystem
The GE GPIO driver provides basic support (set direction, read/write state)
for the GPIO provided on some GE single board computers. This patch moves
the driver from the 86xx specific platform directrory to the GPIO subsystem
so that it can be used on non-86xx boards.

Signed-off-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-03-16 11:08:08 -05:00
Arnd Bergmann 4788d72ce6 Merge branch 'next/soc-exynos5250-gpio' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers
* 'next/soc-exynos5250-gpio' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (201 commits)
  gpio/samsung: use ioremap() for EXYNOS4 GPIOlib
  gpio/samsung: add support GPIOlib for EXYNOS5250
  ARM: EXYNOS: add support GPIO for EXYNOS5250
(update to v3.3-rc7)

Conflicts:
	arch/arm/mach-pxa/pxa25x.c
	arch/arm/mach-pxa/pxa27x.c

The dummy clock for the pxa rtc in those files keeps getting added and
removed in various trees. Apparently removing is the correct solution.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-03-15 20:50:16 +00:00
Arnd Bergmann f4e2467bad Merge branch 'ep93xx-for-arm-soc' of git://github.com/RyanMallon/linux-2.6 into next/cleanup
* 'ep93xx-for-arm-soc' of git://github.com/RyanMallon/linux-2.6:
  ep93xx: Remove unnecessary includes of ep93xx-regs.h
  ep93xx: Move EP93XX_SYSCON defines to SoC private header
  ep93xx: Move crunch code to mach-ep93xx directory
  ep93xx: Make syscon access functions private to SoC
  ep93xx: Configure GPIO ports in core code
  ep93xx: Move peripheral defines to local SoC header
  ep93xx: Convert the watchdog driver into a platform device.
  ep93xx: Use ioremap for backlight driver
  ep93xx: Move GPIO defines to gpio-ep93xx.h
  ep93xx: Don't use system controller defines in audio drivers
  ep93xx: Move PHYS_BASE defines to local SoC header file

(update to v3.3-rc7)

Conflicts:
	arch/arm/mach-s3c2440/common.h
2012-03-15 15:20:07 +00:00
Sangsu Park d39c815278 gpio/samsung: use ioremap() for EXYNOS4 GPIOlib
This patch changes to use ioremap() for EXYNOS4210
so that we can drop the static mapping for EXYNOS
SoCs.

Note: Will be updated for all of Samsung GPIOlibs
to use ioremap() next time.

Signed-off-by: Sangsu Park <sangsu4u.park@samsung.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-14 06:51:35 -07:00
Sangsu Park a9696d840e gpio/samsung: add support GPIOlib for EXYNOS5250
This patch adds gpio_chips for EXYNOS5250 and replaces
exynos4_xxx() with exynos_xxx() and variables to support
exynos4 and exynos5 together.
In addition, use ioreamp() for base address of gpios.

Signed-off-by: Sangsu Park <sangsu4u.park@samsung.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-14 06:51:29 -07:00
Ryan Mallon 08932d8196 ep93xx: Configure GPIO ports in core code
Move the pinmux setting of the EP93xx GPIOs to the core code. This
removes the need for the GPIO driver to have access to the system
controller registers.

Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Mika Westerberg <mika.westerberg@iki.fi>
Acked-by: Hartley Sweeten <hsweeten@visionengravers.com>
2012-03-14 11:42:30 +11:00
Sekhar Nori 81b279d80a gpio/davinci: fix enabling unbanked GPIO IRQs
Unbanked GPIO IRQ handling code made a copy of just
the irq_chip structure for GPIO IRQ lines which caused
problems after the generic IRQ chip conversion because
there was no valid irq_chip_type structure with the
right "regs" populated. irq_gc_mask_set_bit() was
therefore accessing random addresses.

Fix it by making a copy of irq_chip_type structure
instead. This will ensure sane register offsets.

Cc: <stable@vger.kernel.org> # v3.0.x+
Reported-by: Jon Povey <Jon.Povey@racelogic.co.uk>
Tested-by: Jon Povey <Jon.Povey@racelogic.co.uk>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-12 11:53:33 -06:00
Sekhar Nori ab2dde9924 gpio/davinci: fix oops on unbanked gpio irq request
Unbanked GPIO irq setup code was overwriting chip_data leading
to the following oops on request_irq()

Unable to handle kernel paging request at virtual address febfffff
pgd = c22dc000
[febfffff] *pgd=00000000
Internal error: Oops: 801 [#1] PREEMPT
Modules linked in: mcu(+) edmak irqk cmemk
CPU: 0    Not tainted  (3.0.0-rc7+ #93)
PC is at irq_gc_mask_set_bit+0x68/0x7c
LR is at vprintk+0x22c/0x484
pc : [<c0080c0c>]    lr : [<c00457e0>]    psr: 60000093
sp : c33e3ba0  ip : c33e3af0  fp : c33e3bc4
r10: c04555bc  r9 : c33d4340  r8 : 60000013
r7 : 0000002d  r6 : c04555bc  r5 : fec67010  r4 : 00000000
r3 : c04734c8  r2 : fec00000  r1 : ffffffff  r0 : 00000026
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 0005317f  Table: 822dc000  DAC: 00000015
Process modprobe (pid: 526, stack limit = 0xc33e2270)
Stack: (0xc33e3ba0 to 0xc33e4000)
3ba0: 00000000 c007d3d4 c33e3bcc c04555bc c04555bc c33d4340 c33e3bdc c33e3bc8
3bc0: c007f5f8 c0080bb4 00000000 c04555bc c33e3bf4 c33e3be0 c007f654 c007f5c0
3be0: 00000000 c04555bc c33e3c24 c33e3bf8 c007e6e8 c007f618 c01f2284 c0350af8
3c00: c0405214 bf016c98 00000001 00000000 c33dc008 0000002d c33e3c54 c33e3c28
3c20: c007e888 c007e408 00000001 c23ef880 c33dc000 00000000 c33dc080 c25caa00
3c40: c0487498 bf017078 c33e3c94 c33e3c58 bf016b44 c007e7d4 bf017078 c33dc008
3c60: c25caa08 c33dc008 c33e3c84 bf017484 c25caa00 c25caa00 c01f5f48 c25caa08
3c80: c0496d60 bf017484 c33e3ca4 c33e3c98 c022a698 bf01692c c33e3cd4 c33e3ca8
3ca0: c01f5d88 c022a688 00000000 bf017484 c25caa00 c25caa00 c01f5f48 c25caa08
3cc0: c0496d60 00000000 c33e3cec c33e3cd8 c01f5f8c c01f5d10 00000000 c33e3cf0
3ce0: c33e3d14 c33e3cf0 c01f5210 c01f5f58 c303cb48 c25ecf94 c25caa00 c25caa00
3d00: c25caa34 c33e3dd8 c33e3d34 c33e3d18 c01f6044 c01f51b8 c0496d3c c25caa00
3d20: c044e918 c33e3dd8 c33e3d44 c33e3d38 c01f4ff4 c01f5fcc c33e3d94 c33e3d48
3d40: c01f3d10 c01f4fd8 00000000 c044e918 00000000 00000000 c01f52c0 c034d570
3d60: c33e3d84 c33e3d70 c022bf84 c25caa00 00000000 c044e918 c33e3dd8 c25c2e00
3d80: c0496d60 bf01763c c33e3db4 c33e3d98 c022b1a0 c01f384c c25caa00 c33e3dd8
3da0: 00000000 c33e3dd8 c33e3dd4 c33e3db8 c022b27c c022b0e8 00000000 bf01763c
3dc0: c0451c80 c33e3dd8 c33e3e34 c33e3dd8 bf016f60 c022b210 5f75636d 746e6f63
3de0: 006c6f72 00000000 00000000 00000000 00000000 00000000 00000000 bf0174bc
3e00: 00000000 00989680 00000000 00000020 c0451c80 c0451c80 bf0174dc c01f5eb0
3e20: c33f0f00 bf0174dc c33e3e44 c33e3e38 c01f72f4 bf016e2c c33e3e74 c33e3e48
3e40: c01f5d88 c01f72e4 00000000 c0451c80 c0451cb4 bf0174dc c01f5eb0 c33f0f00
3e60: c0473100 00000000 c33e3e94 c33e3e78 c01f5f44 c01f5d10 00000000 c33e3e98
3e80: bf0174dc c01f5eb0 c33e3ebc c33e3e98 c01f5534 c01f5ec0 c303c038 c3061c30
3ea0: 00003cd8 00098258 bf0174dc c0462ac8 c33e3ecc c33e3ec0 c01f5bec c01f54dc
3ec0: c33e3efc c33e3ed0 c01f4d30 c01f5bdc bf0173a0 c33e2000 00003cd8 00098258
3ee0: bf0174dc c33e2000 c00301a4 bf019000 c33e3f1c c33e3f00 c01f6588 c01f4c8c
3f00: 00003cd8 00098258 00000000 c33e2000 c33e3f2c c33e3f20 c01f777c c01f6524
3f20: c33e3f3c c33e3f30 bf019014 c01f7740 c33e3f7c c33e3f40 c002f3ec bf019010
3f40: 00000000 00003cd8 00098258 bf017518 00000000 00003cd8 00098258 bf017518
3f60: 00000000 c00301a4 c33e2000 00000000 c33e3fa4 c33e3f80 c007b934 c002f3c4
3f80: c00b307c c00b2f48 00003cd8 00000000 00000003 00000080 00000000 c33e3fa8
3fa0: c0030020 c007b8b8 00003cd8 00000000 00098288 00003cd8 00098258 00098240
3fc0: 00003cd8 00000000 00000003 00000080 00098008 00098028 00098288 00000001
3fe0: be892998 be892988 00013d7c 40178740 60000010 00098288 09089041 00200845
Backtrace:
[<c0080ba4>] (irq_gc_mask_set_bit+0x0/0x7c) from [<c007f5f8>] (irq_enable+0x48/0x58)
 r6:c33d4340 r5:c04555bc r4:c04555bc
[<c007f5b0>] (irq_enable+0x0/0x58) from [<c007f654>] (irq_startup+0x4c/0x54)
 r5:c04555bc r4:00000000
[<c007f608>] (irq_startup+0x0/0x54) from [<c007e6e8>] (__setup_irq+0x2f0/0x3cc)
 r5:c04555bc r4:00000000
[<c007e3f8>] (__setup_irq+0x0/0x3cc) from [<c007e888>] (request_threaded_irq+0xc4/0x110)
 r8:0000002d r7:c33dc008 r6:00000000 r5:00000001 r4:bf016c98
[<c007e7c4>] (request_threaded_irq+0x0/0x110) from [<bf016b44>] (mcu_spi_probe+0x228/0x37c [mcu])
[<bf01691c>] (mcu_spi_probe+0x0/0x37c [mcu]) from [<c022a698>] (spi_drv_probe+0x20/0x24)
[<c022a678>] (spi_drv_probe+0x0/0x24) from [<c01f5d88>] (driver_probe_device+0x88/0x1b0)
[<c01f5d00>] (driver_probe_device+0x0/0x1b0) from [<c01f5f8c>] (__device_attach+0x44/0x48)
[<c01f5f48>] (__device_attach+0x0/0x48) from [<c01f5210>] (bus_for_each_drv+0x68/0x94)
 r5:c33e3cf0 r4:00000000
[<c01f51a8>] (bus_for_each_drv+0x0/0x94) from [<c01f6044>] (device_attach+0x88/0xa0)
 r7:c33e3dd8 r6:c25caa34 r5:c25caa00 r4:c25caa00
[<c01f5fbc>] (device_attach+0x0/0xa0) from [<c01f4ff4>] (bus_probe_device+0x2c/0x4c)
 r7:c33e3dd8 r6:c044e918 r5:c25caa00 r4:c0496d3c
[<c01f4fc8>] (bus_probe_device+0x0/0x4c) from [<c01f3d10>] (device_add+0x4d4/0x648)
[<c01f383c>] (device_add+0x0/0x648) from [<c022b1a0>] (spi_add_device+0xc8/0x128)
[<c022b0d8>] (spi_add_device+0x0/0x128) from [<c022b27c>] (spi_new_device+0x7c/0xb4)
 r7:c33e3dd8 r6:00000000 r5:c33e3dd8 r4:c25caa00
[<c022b200>] (spi_new_device+0x0/0xb4) from [<bf016f60>] (mcu_probe+0x144/0x224 [mcu])
 r7:c33e3dd8 r6:c0451c80 r5:bf01763c r4:00000000
[<bf016e1c>] (mcu_probe+0x0/0x224 [mcu]) from [<c01f72f4>] (platform_drv_probe+0x20/0x24)
[<c01f72d4>] (platform_drv_probe+0x0/0x24) from [<c01f5d88>] (driver_probe_device+0x88/0x1b0)
[<c01f5d00>] (driver_probe_device+0x0/0x1b0) from [<c01f5f44>] (__driver_attach+0x94/0x98)
[<c01f5eb0>] (__driver_attach+0x0/0x98) from [<c01f5534>] (bus_for_each_dev+0x68/0x94)
 r7:c01f5eb0 r6:bf0174dc r5:c33e3e98 r4:00000000
[<c01f54cc>] (bus_for_each_dev+0x0/0x94) from [<c01f5bec>] (driver_attach+0x20/0x28)
 r7:c0462ac8 r6:bf0174dc r5:00098258 r4:00003cd8
[<c01f5bcc>] (driver_attach+0x0/0x28) from [<c01f4d30>] (bus_add_driver+0xb4/0x258)
[<c01f4c7c>] (bus_add_driver+0x0/0x258) from [<c01f6588>] (driver_register+0x74/0x158)
[<c01f6514>] (driver_register+0x0/0x158) from [<c01f777c>] (platform_driver_register+0x4c/0x60)
 r7:c33e2000 r6:00000000 r5:00098258 r4:00003cd8
[<c01f7730>] (platform_driver_register+0x0/0x60) from [<bf019014>] (mcu_init+0x14/0x20 [mcu])
[<bf019000>] (mcu_init+0x0/0x20 [mcu]) from [<c002f3ec>] (do_one_initcall+0x38/0x170)
[<c002f3b4>] (do_one_initcall+0x0/0x170) from [<c007b934>] (sys_init_module+0x8c/0x1a4)
[<c007b8a8>] (sys_init_module+0x0/0x1a4) from [<c0030020>] (ret_fast_syscall+0x0/0x2c)
 r7:00000080 r6:00000003 r5:00000000 r4:00003cd8
Code: e1844003 e585400c e596300c e5932064 (e7814002)

Fix the issue.

Cc: <stable@vger.kernel.org> # v3.0.x+
Reported-by: Jon Povey <Jon.Povey@racelogic.co.uk>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-12 11:49:33 -06:00
Tony Lindgren 8805f410e4 gpio/omap: Fix section warning for omap_mpuio_alloc_gc()
Make omap_mpuio_alloc_gc() __devinit as omap_gpio_chip_init()
is __devinit. Otherwise we get:

WARNING: vmlinux.o(.devinit.text+0xa10): Section mismatch in reference
from the function omap_gpio_chip_init() to the function .init.text:omap_mpuio_alloc_gc()
The function __devinit omap_gpio_chip_init() references
a function __init omap_mpuio_alloc_gc().
If omap_mpuio_alloc_gc is only used by omap_gpio_chip_init then
annotate omap_mpuio_alloc_gc with a matching annotation.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-12 11:44:46 -06:00
Arnd Bergmann 691e06c0ff ARM: tegra: export tegra_gpio_{en,dis}able
These two functions are used in drivers that can be
modules, so they need to be exported.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alan Ott <alan@signal11.us>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-12 11:42:49 -06:00
Bhupesh Sharma 7535b8bef0 gpio/gpio-stmpe: Fix the value returned by _get_value routine
The present _get_value routine returns the contents of the GPIO Monitor Pin
Status Register(GPMR) starting from the bit whose value is requested to BIT 0
(irrelevant bits are replace by 0).

For e.g. if we request the value of GPIO 6 in the earlier implementation the
value returned is:

	BIT6 followed by 6 0's

whereas it should just return BIT6.

This patch addresses the same.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Reviewed-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-12 11:36:38 -06:00
Roland Stigge 46158aad96 GPIO: LPC32xx: Add output reading to GPO P3
The chip offers the function to detect the current state of output of the GPO
P3 pins. Useful for reading GPIO output state in Linux' GPIO API, e.g. via
sysfs.

Please note that this only reads back the currently programmed output state,
not the actual electrical level in terms of a GPI function. Finally, GPO3 is
still just an output.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-12 11:25:30 -06:00
Roland Stigge 8e5fb37b98 GPIO: LPC32xx: Fix missing bit selection mask
Add missing mask to pin bit selection in gpio-lpc32xx.c
(#define GPIO3_PIN_IN_SEL)

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-12 11:25:30 -06:00
Kevin Hilman 68942edb09 gpio/omap: fix wakeups on level-triggered GPIOs
While both level- and edge-triggered GPIOs are capable of generating
interrupts, only edge-triggered GPIOs are capable of generating a
module-level wakeup to the PRCM (c.f. 34xx NDA TRM section 25.5.3.2.)

In order to ensure that devices using level-triggered GPIOs as
interrupts can also cause wakeups (e.g. from idle), this patch enables
edge-triggering for wakeup-enabled, level-triggered GPIOs when a GPIO
bank is runtime-suspended (which also happens during idle.)

This fixes a problem found in GPMC-connected network cards with GPIO
interrupts (e.g. smsc911x on Zoom3, Overo, ...) where network booting
with NFSroot was very slow since the GPIO IRQs used by the NIC were
not generating PRCM wakeups, and thus not waking the system from idle.
NOTE: until v3.3, this boot-time problem was somewhat masked because
the UART init prevented WFI during boot until the full serial driver
was available.  Preventing WFI allowed regular GPIO interrupts to fire
and this problem was not seen.  After the UART runtime PM cleanups, we
no longer avoid WFI during boot, so GPIO IRQs that were not causing
wakeups resulted in very slow IRQ response times.

Tested on platforms using level-triggered GPIOs for network IRQs using
the SMSC911x NIC: 3530/Overo and 3630/Zoom3.

Reported-by: Tony Lindgren <tony@atomide.com>
Tested-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-12 10:16:11 -06:00
Chris Blair 38040c858c gpio: Support no-irq stmpe mode
Adds support for boards which have an STMPE GPIO device without the
interrupt pin connected. This means that no interrupt can be received
but the GPIO pins can still be driven and read.

Cc: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Viresh Kumar <viresh.kumar@st.com>
Tested-by: Michel Jaouen <michel.jaouen@stericsson.com>
Signed-off-by: Chris Blair <chris.blair@stericsson.com>
Acked-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:38 +01:00
Benoit Cousson 25db711df3 gpio/omap: Fix IRQ handling for SPARSE_IRQ
The driver is still relying on internal OMAP IRQ defines that
are not relevant anymore if OMAP is built with SPARSE_IRQ.

Replace the defines with the proper IRQ base number.
Clean some comment style issue.
Remove some hidden and ugly cpu_class_is_omap1() inside the
gpio header.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Tested-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
2012-03-05 23:02:53 +01:00
Benoit Cousson 384ebe1c28 gpio/omap: Add DT support to GPIO driver
Adapt the GPIO driver to retrieve information from a DT file.

Allocate the irq_base dynamically and rename bank->virtual_irq_start
to bank->irq_base.
Change irq_base type to int instead of u16 to match irq_alloc_descs
output.

Add documentation for GPIO properties specific to OMAP.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
2012-03-05 23:02:53 +01:00
Benoit Cousson 96751fcbe5 gpio/omap: Use devm_ API and add request_mem_region
Replace the regular kzalloc and ioremap with the devm_ equivalent
to simplify error handling.

Add the missing devm_request_mem_region to reserve the region used
by the driver.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Tarun Kanti DebBarma <tarun.kanti@ti.com>
2012-03-05 23:02:52 +01:00
Benoit Cousson 862ff64011 gpio/omap: Remove bank->id information and misc cleanup
The driver does not need anymore any id to identify the GPIO instance.
Remove every occurence of the bank->id inside the driver.

Remove two trailing spaces.
Add a dev variable for better readability in probe.
Remove unused variable bank->pbase.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
2012-03-05 23:02:51 +01:00
Arnd Bergmann 3a70b7e05f Merge branch 'depends/irqdomain' into next/drivers
This is needed in order for the tegra/soc-drivers branch
to work.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-03-05 16:58:11 +00:00
Mark Brown e4e449e828 gpiolib: Add comments explaining the _cansleep() WARN_ON()s
I've seen users getting very confused by the WARN_ON()s for can_sleep
GPIOs in the atomic-safe paths, the discoverability of the non-atomic
version of the API seems to be hampered by the fact that it's defined
in a header file not the .c file where the warnings are.

Add a couple of comments next to the warnings to help people on their
way.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-05 08:05:08 -07:00
Laxman Dewangan 25553ff075 gpio: gpiolib: Support for open source/emitter gpios
Adding support for the open source gpio on which client
can specify the open source property through GPIO flag
GPIOF_OPEN_SOURCE at the time of gpio request.
The open source pins are normally pulled low and it
cannot be driven to output with value of 0 and so
when client request for setting the pin to LOW, the
gpio will be set to input direction to make pin in tristate
and hence PULL-DOWN on pins will make the state to LOW.
The open source pin can be driven to HIGH by setting output
with value of 1.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-05 07:49:44 -07:00
Laxman Dewangan aca5ce14eb gpio: gpiolib: Support for open drain/collector gpios
Adding support for the open drain gpio on which client
can specify the open drain property through GPIO flag
GPIOF_OPEN_DRAIN at the time of gpio request.
The open drain pins are normally pulled high and it
cannot be driven to output with value of 1 and so
when client request for setting the pin to HIGH, the
gpio will be set to input direction to make pin in tristate
and hence PULL-UP on pins will make the state to HIGH.
The open drain pin can be driven to LOW by setting output
with value of 0.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-05 07:49:44 -07:00
Arnd Bergmann 7cb7f82611 Merge tag 'tegra-soc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra into tegra/soc-drivers
Tegra SoC driver support.

Some device tree conversions, some new drivers. and a fix for an issue
introduced in Grant Likely's irq_domain conversion in his tree. Because
of that, this branch depends on his branch to build (but not to merge):

git://git.secretlab.ca/git/linux-2.6.git irqdomain/next

* tag 'tegra-soc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra: (34 commits)
  ARM: tegra: uncompress.h: Don't depend on kernel headers
  gpio: tegra: Fix build issue due to irq_domain rework.
  ARM: tegra: Remove duplicate PMU interrupt inversion code
  ARM: tegra: Add a simple PMC driver
  ARM: tegra: dma: not required to move requestor when stopping.
  ARM: tegra: Fix EMC pdata initialization from registers
  gpio: tegra: Parameterize the number of banks
  gpio: tegra: Dynamically allocate IRQ base, and support DT
  ARM: tegra: Remove use of TEGRA_GPIO_TO_IRQ
  ARM: tegra: Pass uncompress.h UART selection to DEBUG_LL
  ARM: tegra: uncompress.h: Choose a UART at runtime
  ARM: tegra: uncompress.h: Store UART address in a variable
  ARM: tegra: Introduce define DEBUG_UART_SHIFT
  ARM: tegra: Support Tegra30 in decompressor UART setup
  ARM: tegra: Pause DMA when reading transfer count
  ARM: tegra: emc: device tree support
  ARM: tegra: emc: convert tegra2_emc to a platform driver
  ARM: tegra: fuse: add bct strapping reading
  ARM: tegra: fuse: add functions to access chip revision
  ARM: tegra: fuse: use apbio dma for register access
  ...

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-03-04 21:03:30 +00:00