ALSA: wm8750: add missing VREF output

[linux-2.6] / drivers / gpio / Kconfig

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index fced1909cbba0dd055c2a01cd73fc5303138750b..dbd42d6c93a701b2a0e52ec4a118f36ed538701e 100644 (file)
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -2,15 +2,40 @@
 # GPIO infrastructure and expanders
 #
 
 # GPIO infrastructure and expanders
 #
 

-config HAVE_GPIO_LIB
+config ARCH_WANT_OPTIONAL_GPIOLIB

        bool
        bool

+       help
+         Select this config option from the architecture Kconfig, if
+         it is possible to use gpiolib on the architecture, but let the
+         user decide whether to actually build it or not.
+         Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
+         not depend on GPIOs being available, but rather let the user
+         decide whether he needs it or not.
+
+config ARCH_REQUIRE_GPIOLIB
+       bool
+       select GPIOLIB

        help
          Platforms select gpiolib if they use this infrastructure
          for all their GPIOs, usually starting with ones integrated
          into SOC processors.
        help
          Platforms select gpiolib if they use this infrastructure
          for all their GPIOs, usually starting with ones integrated
          into SOC processors.

+         Selecting this from the architecture code will cause the gpiolib
+         code to always get built in.
+
+
+
+menuconfig GPIOLIB
+       bool "GPIO Support"
+       depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
+       select GENERIC_GPIO
+       help
+         This enables GPIO support through the generic GPIO library.
+         You only need to enable this, if you also want to enable
+         one or more of the GPIO expansion card drivers below.

 
 

-menu "GPIO Support"
-       depends on HAVE_GPIO_LIB
+         If unsure, say N.
+
+if GPIOLIB

 
 config DEBUG_GPIO
        bool "Debug GPIO calls"
 
 config DEBUG_GPIO
        bool "Debug GPIO calls"


@@ -23,10 +48,44 @@ config DEBUG_GPIO
          slower.  The diagnostics help catch the type of setup errors
          that are most common when setting up new platforms or boards.
 
          slower.  The diagnostics help catch the type of setup errors
          that are most common when setting up new platforms or boards.
 

+config GPIO_SYSFS
+       bool "/sys/class/gpio/... (sysfs interface)"
+       depends on SYSFS && EXPERIMENTAL
+       help
+         Say Y here to add a sysfs interface for GPIOs.
+
+         This is mostly useful to work around omissions in a system's
+         kernel support.  Those are common in custom and semicustom
+         hardware assembled using standard kernels with a minimum of
+         custom patches.  In those cases, userspace code may import
+         a given GPIO from the kernel, if no kernel driver requested it.
+
+         Kernel drivers may also request that a particular GPIO be
+         exported to userspace; this can be useful when debugging.
+

 # put expanders in the right section, in alphabetical order
 
 comment "I2C GPIO expanders:"
 
 # put expanders in the right section, in alphabetical order
 
 comment "I2C GPIO expanders:"
 

+config GPIO_MAX732X
+       tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
+       depends on I2C
+       help
+         Say yes here to support the MAX7319, MAX7320-7327 series of I2C
+         Port Expanders. Each IO port on these chips has a fixed role of
+         Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
+         Input and Output (designed by 'P'). The combinations are listed
+         below:
+
+         8 bits:       max7319 (8I), max7320 (8O), max7321 (8P),
+                       max7322 (4I4O), max7323 (4P4O)
+
+         16 bits:      max7324 (8I8O), max7325 (8P8O),
+                       max7326 (4I12O), max7327 (4P12O)
+
+         Board setup code must specify the model to use, and the start
+         number for these GPIOs.
+

 config GPIO_PCA953X
        tristate "PCA953x, PCA955x, and MAX7310 I/O ports"
        depends on I2C
 config GPIO_PCA953X
        tristate "PCA953x, PCA955x, and MAX7310 I/O ports"
        depends on I2C


@@ -68,6 +127,24 @@ config GPIO_PCF857X
          This driver provides an in-kernel interface to those GPIOs using
          platform-neutral GPIO calls.
 
          This driver provides an in-kernel interface to those GPIOs using
          platform-neutral GPIO calls.
 

+comment "PCI GPIO expanders:"
+
+config GPIO_BT8XX
+       tristate "BT8XX GPIO abuser"
+       depends on PCI && VIDEO_BT848=n
+       help
+         The BT8xx frame grabber chip has 24 GPIO pins than can be abused
+         as a cheap PCI GPIO card.
+
+         This chip can be found on Miro, Hauppauge and STB TV-cards.
+
+         The card needs to be physically altered for using it as a
+         GPIO card. For more information on how to build a GPIO card
+         from a BT8xx TV card, see the documentation file at
+         Documentation/bt8xxgpio.txt
+
+         If unsure, say N.
+

 comment "SPI GPIO expanders:"
 
 config GPIO_MAX7301
 comment "SPI GPIO expanders:"
 
 config GPIO_MAX7301


@@ -83,4 +160,4 @@ config GPIO_MCP23S08
          SPI driver for Microchip MCP23S08 I/O expander.  This provides
          a GPIO interface supporting inputs and outputs.
 
          SPI driver for Microchip MCP23S08 I/O expander.  This provides
          a GPIO interface supporting inputs and outputs.
 

-endmenu
+endif