mfd: AB3100 register access change to abx500 API

The interface for the AB3100 is changed to make way for the
ABX500 family of chips: AB3550, AB5500 and future ST-Ericsson
Analog Baseband chips. The register access functions are moved
out to a separate struct abx500_ops. In this way the interface
is moved from the implementation and the sub functionality drivers
can keep their interface intact when chip infrastructure and
communication mechanisms changes. We also define the AB3550
device IDs and the AB3550 platform data struct and convert
the catenated 32bit event to an array of 3 x 8bits.

Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 614fa7b8a054..1c3d737ec406 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -374,9 +374,19 @@ config PCF50633_GPIO
          Say yes here if you want to include support GPIO for pins on
          the PCF50633 chip.
 
+config ABX500_CORE
+        bool "ST-Ericsson ABX500 Mixed Signal Circuit register functions"
+        default y if ARCH_U300
+        help
+          Say yes here if you have the ABX500 Mixed Signal IC family
+          chips. This core driver expose register access functions.
+          Functionality specific drivers using these functions can
+          remain unchanged when IC changes. Binding of the functions to
+          actual register access is done by the IC core driver.
+
 config AB3100_CORE
         bool "ST-Ericsson AB3100 Mixed Signal Circuit core functions"
-        depends on I2C=y
+        depends on I2C=y && ABX500_CORE
         default y if ARCH_U300
         help
           Select this to enable the AB3100 Mixed Signal IC core