7bf97e1d5a
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
...
517 lines
15 KiB
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517 lines
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#
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# GPIO infrastructure and drivers
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#
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config ARCH_WANT_OPTIONAL_GPIOLIB
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bool
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help
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Select this config option from the architecture Kconfig, if
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it is possible to use gpiolib on the architecture, but let the
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user decide whether to actually build it or not.
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Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
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not depend on GPIOs being available, but rather let the user
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decide whether he needs it or not.
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config ARCH_REQUIRE_GPIOLIB
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bool
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select GPIOLIB
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help
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Platforms select gpiolib if they use this infrastructure
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for all their GPIOs, usually starting with ones integrated
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into SOC processors.
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Selecting this from the architecture code will cause the gpiolib
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code to always get built in.
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menuconfig GPIOLIB
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bool "GPIO Support"
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depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
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select GENERIC_GPIO
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help
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This enables GPIO support through the generic GPIO library.
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You only need to enable this, if you also want to enable
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one or more of the GPIO drivers below.
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If unsure, say N.
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if GPIOLIB
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config DEBUG_GPIO
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bool "Debug GPIO calls"
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depends on DEBUG_KERNEL
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help
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Say Y here to add some extra checks and diagnostics to GPIO calls.
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These checks help ensure that GPIOs have been properly initialized
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before they are used, and that sleeping calls are not made from
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non-sleeping contexts. They can make bitbanged serial protocols
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slower. The diagnostics help catch the type of setup errors
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that are most common when setting up new platforms or boards.
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config GPIO_SYSFS
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bool "/sys/class/gpio/... (sysfs interface)"
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depends on SYSFS && EXPERIMENTAL
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help
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Say Y here to add a sysfs interface for GPIOs.
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This is mostly useful to work around omissions in a system's
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kernel support. Those are common in custom and semicustom
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hardware assembled using standard kernels with a minimum of
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custom patches. In those cases, userspace code may import
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a given GPIO from the kernel, if no kernel driver requested it.
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Kernel drivers may also request that a particular GPIO be
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exported to userspace; this can be useful when debugging.
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config GPIO_GENERIC
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tristate
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# put drivers in the right section, in alphabetical order
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config GPIO_DA9052
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tristate "Dialog DA9052 GPIO"
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depends on PMIC_DA9052 && BROKEN
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help
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Say yes here to enable the GPIO driver for the DA9052 chip.
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config GPIO_MAX730X
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tristate
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comment "Memory mapped GPIO drivers:"
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config GPIO_GENERIC_PLATFORM
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tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
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select GPIO_GENERIC
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help
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Say yes here to support basic platform_device memory-mapped GPIO controllers.
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config GPIO_IT8761E
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tristate "IT8761E GPIO support"
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depends on X86 # unconditional access to IO space.
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help
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Say yes here to support GPIO functionality of IT8761E super I/O chip.
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config GPIO_EP93XX
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def_bool y
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depends on ARCH_EP93XX
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select GPIO_GENERIC
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config GPIO_MPC5200
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def_bool y
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depends on PPC_MPC52xx
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config GPIO_MPC8XXX
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bool "MPC512x/MPC8xxx GPIO support"
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depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
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FSL_SOC_BOOKE || PPC_86xx
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help
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Say Y here if you're going to use hardware that connects to the
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MPC512x/831x/834x/837x/8572/8610 GPIOs.
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config GPIO_MSM_V1
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tristate "Qualcomm MSM GPIO v1"
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depends on GPIOLIB && ARCH_MSM
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help
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Say yes here to support the GPIO interface on ARM v6 based
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Qualcomm MSM chips. Most of the pins on the MSM can be
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selected for GPIO, and are controlled by this driver.
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config GPIO_MSM_V2
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tristate "Qualcomm MSM GPIO v2"
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depends on GPIOLIB && ARCH_MSM
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help
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Say yes here to support the GPIO interface on ARM v7 based
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Qualcomm MSM chips. Most of the pins on the MSM can be
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selected for GPIO, and are controlled by this driver.
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config GPIO_MXC
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def_bool y
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depends on ARCH_MXC
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select GPIO_GENERIC
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select GENERIC_IRQ_CHIP
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config GPIO_MXS
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def_bool y
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depends on ARCH_MXS
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select GPIO_GENERIC
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select GENERIC_IRQ_CHIP
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config GPIO_PL061
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bool "PrimeCell PL061 GPIO support"
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depends on ARM_AMBA
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select GENERIC_IRQ_CHIP
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help
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Say yes here to support the PrimeCell PL061 GPIO device
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config GPIO_PXA
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bool "PXA GPIO support"
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depends on ARCH_PXA || ARCH_MMP
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help
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Say yes here to support the PXA GPIO device
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config GPIO_XILINX
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bool "Xilinx GPIO support"
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depends on PPC_OF || MICROBLAZE
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help
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Say yes here to support the Xilinx FPGA GPIO device
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config GPIO_VR41XX
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tristate "NEC VR4100 series General-purpose I/O Uint support"
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depends on CPU_VR41XX
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help
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Say yes here to support the NEC VR4100 series General-purpose I/O Uint
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config GPIO_SCH
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tristate "Intel SCH/TunnelCreek GPIO"
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depends on PCI && X86
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select MFD_CORE
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select LPC_SCH
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help
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Say yes here to support GPIO interface on Intel Poulsbo SCH
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or Intel Tunnel Creek processor.
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The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
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powered by the core power rail and are turned off during sleep
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modes (S3 and higher). The remaining four GPIOs are powered by
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the Intel SCH suspend power supply. These GPIOs remain
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active during S3. The suspend powered GPIOs can be used to wake the
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system from the Suspend-to-RAM state.
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The Intel Tunnel Creek processor has 5 GPIOs powered by the
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core power rail and 9 from suspend power supply.
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config GPIO_VX855
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tristate "VIA VX855/VX875 GPIO"
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depends on PCI
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select MFD_CORE
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select MFD_VX855
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help
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Support access to the VX855/VX875 GPIO lines through the gpio library.
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This driver provides common support for accessing the device,
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additional drivers must be enabled in order to use the
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functionality of the device.
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config GPIO_GE_FPGA
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bool "GE FPGA based GPIO"
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depends on GE_FPGA
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help
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Support for common GPIO functionality provided on some GE Single Board
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Computers.
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This driver provides basic support (configure as input or output, read
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and write pin state) for GPIO implemented in a number of GE single
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board computers.
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comment "I2C GPIO expanders:"
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config GPIO_MAX7300
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tristate "Maxim MAX7300 GPIO expander"
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depends on I2C
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select GPIO_MAX730X
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help
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GPIO driver for Maxim MAX7301 I2C-based GPIO expander.
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config GPIO_MAX732X
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tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
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depends on I2C
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help
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Say yes here to support the MAX7319, MAX7320-7327 series of I2C
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Port Expanders. Each IO port on these chips has a fixed role of
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Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
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Input and Output (designed by 'P'). The combinations are listed
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below:
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8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
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max7322 (4I4O), max7323 (4P4O)
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16 bits: max7324 (8I8O), max7325 (8P8O),
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max7326 (4I12O), max7327 (4P12O)
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Board setup code must specify the model to use, and the start
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number for these GPIOs.
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config GPIO_MAX732X_IRQ
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bool "Interrupt controller support for MAX732x"
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depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
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help
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Say yes here to enable the max732x to be used as an interrupt
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controller. It requires the driver to be built in the kernel.
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config GPIO_MC9S08DZ60
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bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
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depends on I2C && MACH_MX35_3DS
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help
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Select this to enable the MC9S08DZ60 GPIO driver
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config GPIO_PCA953X
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tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
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depends on I2C
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help
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Say yes here to provide access to several register-oriented
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SMBus I/O expanders, made mostly by NXP or TI. Compatible
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models include:
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4 bits: pca9536, pca9537
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8 bits: max7310, pca9534, pca9538, pca9554, pca9557,
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tca6408
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16 bits: pca9535, pca9539, pca9555, tca6416
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config GPIO_PCA953X_IRQ
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bool "Interrupt controller support for PCA953x"
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depends on GPIO_PCA953X=y
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help
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Say yes here to enable the pca953x to be used as an interrupt
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controller. It requires the driver to be built in the kernel.
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config GPIO_PCF857X
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tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
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depends on I2C
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help
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Say yes here to provide access to most "quasi-bidirectional" I2C
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GPIO expanders used for additional digital outputs or inputs.
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Most of these parts are from NXP, though TI is a second source for
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some of them. Compatible models include:
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8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
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pca9670, pca9672, pca9674, pca9674a,
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max7328, max7329
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16 bits: pcf8575, pcf8575c, pca8575,
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pca9671, pca9673, pca9675
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Your board setup code will need to declare the expanders in
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use, and assign numbers to the GPIOs they expose. Those GPIOs
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can then be used from drivers and other kernel code, just like
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other GPIOs, but only accessible from task contexts.
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This driver provides an in-kernel interface to those GPIOs using
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platform-neutral GPIO calls.
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config GPIO_SX150X
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bool "Semtech SX150x I2C GPIO expander"
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depends on I2C=y
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default n
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help
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Say yes here to provide support for Semtech SX150-series I2C
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GPIO expanders. Compatible models include:
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8 bits: sx1508q
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16 bits: sx1509q
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config GPIO_STMPE
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bool "STMPE GPIOs"
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depends on MFD_STMPE
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help
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This enables support for the GPIOs found on the STMPE I/O
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Expanders.
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config GPIO_TC3589X
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bool "TC3589X GPIOs"
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depends on MFD_TC3589X
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help
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This enables support for the GPIOs found on the TC3589X
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I/O Expander.
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config GPIO_TPS65912
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tristate "TI TPS65912 GPIO"
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depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)
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help
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This driver supports TPS65912 gpio chip
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config GPIO_TWL4030
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tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
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depends on TWL4030_CORE
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help
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Say yes here to access the GPIO signals of various multi-function
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power management chips from Texas Instruments.
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config GPIO_WM831X
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tristate "WM831x GPIOs"
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depends on MFD_WM831X
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help
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Say yes here to access the GPIO signals of WM831x power management
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chips from Wolfson Microelectronics.
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config GPIO_WM8350
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tristate "WM8350 GPIOs"
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depends on MFD_WM8350
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help
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Say yes here to access the GPIO signals of WM8350 power management
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chips from Wolfson Microelectronics.
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config GPIO_WM8994
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tristate "WM8994 GPIOs"
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depends on MFD_WM8994
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help
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Say yes here to access the GPIO signals of WM8994 audio hub
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CODECs from Wolfson Microelectronics.
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config GPIO_ADP5520
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tristate "GPIO Support for ADP5520 PMIC"
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depends on PMIC_ADP5520
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help
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This option enables support for on-chip GPIO found
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on Analog Devices ADP5520 PMICs.
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config GPIO_ADP5588
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tristate "ADP5588 I2C GPIO expander"
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depends on I2C
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help
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This option enables support for 18 GPIOs found
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on Analog Devices ADP5588 GPIO Expanders.
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config GPIO_ADP5588_IRQ
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bool "Interrupt controller support for ADP5588"
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depends on GPIO_ADP5588=y
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help
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Say yes here to enable the adp5588 to be used as an interrupt
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controller. It requires the driver to be built in the kernel.
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comment "PCI GPIO expanders:"
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config GPIO_CS5535
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tristate "AMD CS5535/CS5536 GPIO support"
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depends on PCI && X86 && MFD_CS5535
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help
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The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
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can be used for quite a number of things. The CS5535/6 is found on
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AMD Geode and Lemote Yeeloong devices.
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If unsure, say N.
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config GPIO_BT8XX
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tristate "BT8XX GPIO abuser"
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depends on PCI && VIDEO_BT848=n
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help
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The BT8xx frame grabber chip has 24 GPIO pins than can be abused
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as a cheap PCI GPIO card.
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This chip can be found on Miro, Hauppauge and STB TV-cards.
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The card needs to be physically altered for using it as a
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GPIO card. For more information on how to build a GPIO card
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from a BT8xx TV card, see the documentation file at
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Documentation/bt8xxgpio.txt
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If unsure, say N.
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config GPIO_LANGWELL
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bool "Intel Langwell/Penwell GPIO support"
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depends on PCI && X86
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help
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Say Y here to support Intel Langwell/Penwell GPIO.
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config GPIO_PCH
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tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
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depends on PCI && X86
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select GENERIC_IRQ_CHIP
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help
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This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
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which is an IOH(Input/Output Hub) for x86 embedded processor.
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This driver can access PCH GPIO device.
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This driver also can be used for LAPIS Semiconductor IOH(Input/
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Output Hub), ML7223 and ML7831.
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ML7223 IOH is for MP(Media Phone) use.
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ML7831 IOH is for general purpose use.
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ML7223/ML7831 is companion chip for Intel Atom E6xx series.
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ML7223/ML7831 is completely compatible for Intel EG20T PCH.
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config GPIO_ML_IOH
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tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
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depends on PCI
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select GENERIC_IRQ_CHIP
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help
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ML7213 is companion chip for Intel Atom E6xx series.
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This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
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Hub) which is for IVI(In-Vehicle Infotainment) use.
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This driver can access the IOH's GPIO device.
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config GPIO_SODAVILLE
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bool "Intel Sodaville GPIO support"
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depends on X86 && PCI && OF && BROKEN
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select GPIO_GENERIC
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select GENERIC_IRQ_CHIP
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help
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Say Y here to support Intel Sodaville GPIO.
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config GPIO_TIMBERDALE
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bool "Support for timberdale GPIO IP"
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depends on MFD_TIMBERDALE && HAS_IOMEM
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---help---
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Add support for the GPIO IP in the timberdale FPGA.
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config GPIO_RDC321X
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tristate "RDC R-321x GPIO support"
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depends on PCI
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select MFD_CORE
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select MFD_RDC321X
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help
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Support for the RDC R321x SoC GPIOs over southbridge
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PCI configuration space.
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comment "SPI GPIO expanders:"
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config GPIO_MAX7301
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tristate "Maxim MAX7301 GPIO expander"
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depends on SPI_MASTER
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select GPIO_MAX730X
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help
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GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
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|
|
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config GPIO_MCP23S08
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tristate "Microchip MCP23xxx I/O expander"
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depends on SPI_MASTER || I2C
|
|
help
|
|
SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
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I/O expanders.
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This provides a GPIO interface supporting inputs and outputs.
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|
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config GPIO_MC33880
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|
tristate "Freescale MC33880 high-side/low-side switch"
|
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depends on SPI_MASTER
|
|
help
|
|
SPI driver for Freescale MC33880 high-side/low-side switch.
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This provides GPIO interface supporting inputs and outputs.
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|
|
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config GPIO_74X164
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|
tristate "74x164 serial-in/parallel-out 8-bits shift register"
|
|
depends on SPI_MASTER
|
|
help
|
|
Platform driver for 74x164 compatible serial-in/parallel-out
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|
8-outputs shift registers. This driver can be used to provide access
|
|
to more gpio outputs.
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|
|
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comment "AC97 GPIO expanders:"
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|
|
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config GPIO_UCB1400
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bool "Philips UCB1400 GPIO"
|
|
depends on UCB1400_CORE
|
|
help
|
|
This enables support for the Philips UCB1400 GPIO pins.
|
|
The UCB1400 is an AC97 audio codec.
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|
|
|
comment "MODULbus GPIO expanders:"
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|
|
|
config GPIO_JANZ_TTL
|
|
tristate "Janz VMOD-TTL Digital IO Module"
|
|
depends on MFD_JANZ_CMODIO
|
|
help
|
|
This enables support for the Janz VMOD-TTL Digital IO module.
|
|
This driver provides support for driving the pins in output
|
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mode only. Input mode is not supported.
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|
|
|
config GPIO_AB8500
|
|
bool "ST-Ericsson AB8500 Mixed Signal Circuit gpio functions"
|
|
depends on AB8500_CORE && BROKEN
|
|
help
|
|
Select this to enable the AB8500 IC GPIO driver
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|
|
|
config GPIO_TPS65910
|
|
bool "TPS65910 GPIO"
|
|
depends on MFD_TPS65910
|
|
help
|
|
Select this option to enable GPIO driver for the TPS65910
|
|
chip family.
|
|
endif
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