gpio: add bt8xxgpio driver

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / gpio / Kconfig

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index bbd28342e771f415a4b7365653e3383757a398a2..de202dbe53008c2a7c8a5e24cf67256292148658 100644 (file)
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -23,23 +23,44 @@ config DEBUG_GPIO
          slower.  The diagnostics help catch the type of setup errors
          that are most common when setting up new platforms or boards.
 
+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:"
 
 config GPIO_PCA953X
-       tristate "PCA953x I/O ports"
+       tristate "PCA953x, PCA955x, and MAX7310 I/O ports"
        depends on I2C
        help
-         Say yes here to support the PCA9534 (8-bit), PCA9535 (16-bit),
-         PCA9536 (4-bit), PCA9537 (4-bit), PCA9538 (8-bit), and PCA9539
-         (16-bit) I/O ports. These parts are made by NXP and TI.
+         Say yes here to provide access to several register-oriented
+         SMBus I/O expanders, made mostly by NXP or TI.  Compatible
+         models include:
+
+         4 bits:       pca9536, pca9537
+
+         8 bits:       max7310, pca9534, pca9538, pca9554, pca9557
+
+         16 bits:      pca9535, pca9539, pca9555
 
          This driver can also be built as a module.  If so, the module
          will be called pca953x.
 
 config GPIO_PCF857X
-       tristate "PCF857x, PCA857x, and PCA967x I2C GPIO expanders"
+       tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
        depends on I2C
        help
          Say yes here to provide access to most "quasi-bidirectional" I2C
@@ -48,7 +69,8 @@ config GPIO_PCF857X
          some of them.  Compatible models include:
 
          8 bits:   pcf8574, pcf8574a, pca8574, pca8574a,
-                   pca9670, pca9672, pca9674, pca9674a
+                   pca9670, pca9672, pca9674, pca9674a,
+                   max7328, max7329
 
          16 bits:  pcf8575, pcf8575c, pca8575,
                    pca9671, pca9673, pca9675
@@ -61,8 +83,32 @@ config GPIO_PCF857X
          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
+       tristate "Maxim MAX7301 GPIO expander"
+       depends on SPI_MASTER
+       help
+         gpio driver for Maxim MAX7301 SPI GPIO expander.
+
 config GPIO_MCP23S08
        tristate "Microchip MCP23S08 I/O expander"
        depends on SPI_MASTER