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mfd: support stmpe1801 18 bits enhanced port expander

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Provides support for 1801 variant of stmpe gpio port expanders.
This chip has 18 gpios configurable as GPI, GPO, keypad matrix,
special key or dedicated key function.

Note that special/dedicated key function is not supported yet.

Signed-off-by: Jean-Nicolas Graux <jean-nicolas.graux@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Jean-Nicolas Graux 2013-04-09 10:35:19 +02:00 • committed by Samuel Ortiz
parent e65ad41e3b
commit 230f13a503
5 changed files with 150 additions and 1 deletions
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3
include/linux/mfd/stmpe.h
View file

@ -26,6 +26,7 @@ enum stmpe_partnum {
STMPE801,
STMPE811,
STMPE1601,
STMPE1801,
STMPE2401,
STMPE2403,
STMPE_NBR_PARTS
@ -39,6 +40,7 @@ enum {
STMPE_IDX_CHIP_ID,
STMPE_IDX_ICR_LSB,
STMPE_IDX_IER_LSB,
STMPE_IDX_ISR_LSB,
STMPE_IDX_ISR_MSB,
STMPE_IDX_GPMR_LSB,
STMPE_IDX_GPSR_LSB,
@ -49,6 +51,7 @@ enum {
STMPE_IDX_GPFER_LSB,
STMPE_IDX_GPAFR_U_MSB,
STMPE_IDX_IEGPIOR_LSB,
STMPE_IDX_ISGPIOR_LSB,
STMPE_IDX_ISGPIOR_MSB,
STMPE_IDX_MAX,
};