gpio: Add Tunnel Creek support to sch_gpio
Almost the same driver for both Poulsbo and Tunnel Creek.
The difference is in quantity of GPIOs powered by the core power
rail and by suspend power supply, default values for some GPIOs, etc.
Detect actual hardware by platform device ID assigned in lpc_sch
and set configuration accordingly.
Signed-off-by: Denis Turischev <denis@compulab.co.il>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index b46442d..d8d0cda 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -100,18 +100,21 @@
Say yes here to support the NEC VR4100 series General-purpose I/O Uint
config GPIO_SCH
- tristate "Intel SCH GPIO"
+ tristate "Intel SCH/TunnelCreek GPIO"
depends on GPIOLIB && PCI && X86
select MFD_CORE
select LPC_SCH
help
- Say yes here to support GPIO interface on Intel Poulsbo SCH.
+ Say yes here to support GPIO interface on Intel Poulsbo SCH
+ or Intel Tunnel Creek processor.
The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
powered by the core power rail and are turned off during sleep
modes (S3 and higher). The remaining four GPIOs are powered by
the Intel SCH suspend power supply. These GPIOs remain
active during S3. The suspend powered GPIOs can be used to wake the
system from the Suspend-to-RAM state.
+ The Intel Tunnel Creek processor has 5 GPIOs powered by the
+ core power rail and 9 from suspend power supply.
This driver can also be built as a module. If so, the module
will be called sch-gpio.