ASIC3 driver

This is a patch for the Compaq ASIC3 multi function chip, found in many
PDAs (iPAQs, HTCs...).

It is a simplified version of Paul Sokolovsky's first proposal [1].  With
this code, it is basically a GPIO and IRQ expander.  My plan is to add more
features once this patch gets reviewed and accepted.

[1] http://lkml.org/lkml/2007/5/1/46Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Cc: Paul Sokolovsky <pmiscml@gmail.com>
Cc: Ben Dooks <ben@trinity.fluff.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/mfd/Kconfig

@@ -15,6 +15,13 @@ config MFD_SM501
 	  interface. The device may be connected by PCI or local bus with
 	  varying functions enabled.
 
+config MFD_ASIC3
+	bool "Support for Compaq ASIC3"
+	depends on GENERIC_HARDIRQS && ARM
+	 ---help---
+	  This driver supports the ASIC3 multifunction chip found on many
+	  PDAs (mainly iPAQ and HTC based ones)
+
 endmenu
 
 menu "Multimedia Capabilities Port drivers"

drivers/mfd/Makefile

@@ -3,6 +3,7 @@
 #
 
 obj-$(CONFIG_MFD_SM501)		+= sm501.o
+obj-$(CONFIG_MFD_ASIC3)		+= asic3.o
 
 obj-$(CONFIG_MCP)		+= mcp-core.o
 obj-$(CONFIG_MCP_SA11X0)	+= mcp-sa11x0.o