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authorSundar R Iyer <sundar.iyer@stericsson.com>2010-07-21 10:11:07 +0400
committerSamuel Ortiz <sameo@linux.intel.com>2010-08-12 13:28:00 +0400
commit5981f4e65cb455a820b3d07b8e4bac506233f3ea (patch)
tree541a0ba41593bda73d1ce9b3ce004de43dcccd85 /drivers/mfd/stmpe.h
parent3faeb35ccc57e1af70c54b82063fdf4a88846084 (diff)
downloadlinux-5981f4e65cb455a820b3d07b8e4bac506233f3ea.tar.xz
mfd: Add stmpe auto sleep feature
Some STMPE devices support entering sleep mode automatically on a specified timeout of inactivity on the I2C bus with the host system. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Sundar R Iyer <sundar.iyer@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/stmpe.h')
-rw-r--r--drivers/mfd/stmpe.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mfd/stmpe.h b/drivers/mfd/stmpe.h
index 991f0ecbeb34..0dbdc4e8cd77 100644
--- a/drivers/mfd/stmpe.h
+++ b/drivers/mfd/stmpe.h
@@ -49,6 +49,7 @@ struct stmpe_variant_block {
* Called with the I/O lock held.
* @get_altfunc: callback to get the alternate function number for the
* specific block
+ * @enable_autosleep: callback to configure autosleep with specified timeout
*/
struct stmpe_variant_info {
const char *name;
@@ -62,6 +63,7 @@ struct stmpe_variant_info {
int num_irqs;
int (*enable)(struct stmpe *stmpe, unsigned int blocks, bool enable);
int (*get_altfunc)(struct stmpe *stmpe, enum stmpe_block block);
+ int (*enable_autosleep)(struct stmpe *stmpe, int autosleep_timeout);
};
#define STMPE_ICR_LSB_HIGH (1 << 2)
@@ -118,6 +120,7 @@ struct stmpe_variant_info {
#define STMPE1601_NR_INTERNAL_IRQS 9
#define STMPE1601_REG_SYS_CTRL 0x02
+#define STMPE1601_REG_SYS_CTRL2 0x03
#define STMPE1601_REG_ICR_LSB 0x11
#define STMPE1601_REG_IER_LSB 0x13
#define STMPE1601_REG_ISR_MSB 0x14
@@ -137,6 +140,10 @@ struct stmpe_variant_info {
#define STMPE1601_SYS_CTRL_ENABLE_KPC (1 << 1)
#define STMPE1601_SYSCON_ENABLE_SPWM (1 << 0)
+/* The 1601/2403 share the same masks */
+#define STMPE1601_AUTOSLEEP_TIMEOUT_MASK (0x7)
+#define STPME1601_AUTOSLEEP_ENABLE (1 << 3)
+
/*
* STMPE24xx
*/