[ARM] 4506/1: HP Jornada 7XX: Addition of SSP Platform Driver

These patches add full SSP/MCU support for the HP Jornada 720
machine.  Its needed to handle keyboard, touchscreen, battery
and backlight/lcd.

The main driver exports functions and the header file exports
the command values. When talking to the MCU the general procedure
is to start MCU, send command (using ssp_inout(command)), the
proper reply is always TXDUMMY.  After receiving TXDUMMY you can
send the value you wish pushed (for example brightness level).
End with ssp_end() so the spinlock gets unlocked.

Drivers using this havent been implemented yet, but will shortly.

Signed-off-by: Kristoffer Ericson <Kristoffer.ericson@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 11 insertions, 2 deletions

diff --git a/arch/arm/mach-sa1100/Kconfig b/arch/arm/mach-sa1100/Kconfig
index cd67ab1b217b..f99d9013905f 100644
--- a/arch/arm/mach-sa1100/Kconfig
+++ b/arch/arm/mach-sa1100/Kconfig
@@ -101,6 +101,16 @@ config SA1100_JORNADA720
           handheld computer.  See <http://www.hp.com/jornada/products/720>
           for details.
 
+config SA1100_JORNADA720_SSP
+        bool "HP Jornada 720 Extended SSP driver"
+        select SA1100_SSP
+        depends on SA1100_JORNADA720
+        help
+          Say Y here if you have a HP Jornada 7xx handheld computer and you
+          want to access devices connected to the MCU. Those include the
+          keyboard, touchscreen, backlight and battery. This driver also activates
+          the generic SSP which it extends.
+
 config SA1100_HACKKIT
         bool "HackKit Core CPU Board"
         help
@@ -145,8 +155,7 @@ config SA1100_SSP
         help
           Say Y here to enable support for the generic PIO SSP driver.
           This isn't for audio support, but for attached sensors and
-          other devices, eg for BadgePAD 4 sensor support, or Jornada
-          720 touchscreen support.
+          other devices, eg for BadgePAD 4 sensor support.
 
 config H3600_SLEEVE
         tristate "Compaq iPAQ Handheld sleeve support"