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| author | Cory Maccarrone <darkstar6262@gmail.com> | 2010-01-19 11:22:45 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2010-03-07 22:17:09 +0100 |
| commit | 6048a3dd2371c58611ea0ab8b306f8f1469399ae (patch) | |
| tree | 961cff65dda1ea4ab5049d01d858c95ee2ac5044 /drivers/mfd/Kconfig | |
| parent | 08ff6f2a9908c87b0adffe6453291be22db3a62f (diff) | |
| download | linux-6048a3dd2371c58611ea0ab8b306f8f1469399ae.tar.gz linux-6048a3dd2371c58611ea0ab8b306f8f1469399ae.tar.bz2 linux-6048a3dd2371c58611ea0ab8b306f8f1469399ae.zip | |
mfd: Add HTCPLD driver
This change introduces a driver for the HTC PLD chip found
on some smartphones, such as the HTC Wizard and HTC Herald.
It works through the I2C bus and acts as a GPIO extender.
Specifically:
* it can have several sub-devices, each with its own I2C
address
* Each sub-device provides 8 output and 8 input pins
* The chip attaches to one GPIO to signal when any of the
input GPIOs change -- at which point all chips must be
scanned for changes
This driver implements the GPIOs throught the kernel's
GPIO and IRQ framework. This allows any GPIO-servicing
drivers to operate on htcpld pins, such as the gpio-keys
and gpio-leds drivers.
Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/Kconfig')
| -rw-r--r-- | drivers/mfd/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index d63ab2eec661..9bcd447e71e2 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -78,6 +78,15 @@ config HTC_PASIC3 HTC Magician devices, respectively. Actual functionality is handled by the leds-pasic3 and ds1wm drivers. +config HTC_I2CPLD + bool "HTC I2C PLD chip support" + depends on I2C=y + help + If you say yes here you get support for the supposed CPLD + found on omap850 HTC devices like the HTC Wizard and HTC Herald. + This device provides input and output GPIOs through an I2C + interface to one or more sub-chips. + config UCB1400_CORE tristate "Philips UCB1400 Core driver" depends on AC97_BUS |