mfd: pm8xxx-misc: Add pm8xxx smpl based API's
Add APIs to:
1. Configure PMIC to reset/shutdown on a SMPL event
2. Set SMPL delay time
Change-Id: I9e677ebd5b4339b50e7d18e2ba0eb3af694c2d20
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
diff --git a/include/linux/mfd/pm8xxx/misc.h b/include/linux/mfd/pm8xxx/misc.h
index 3c681f0..af0423a 100644
--- a/include/linux/mfd/pm8xxx/misc.h
+++ b/include/linux/mfd/pm8xxx/misc.h
@@ -60,6 +60,13 @@
enum pm8xxx_coincell_chg_resistor resistor;
};
+enum pm8xxx_smpl_delay {
+ PM8XXX_SMPL_DELAY_0p5,
+ PM8XXX_SMPL_DELAY_1p0,
+ PM8XXX_SMPL_DELAY_1p5,
+ PM8XXX_SMPL_DELAY_2p0,
+};
+
#if defined(CONFIG_MFD_PM8XXX_MISC) || defined(CONFIG_MFD_PM8XXX_MISC_MODULE)
/**
@@ -85,6 +92,31 @@
*/
int pm8xxx_coincell_chg_config(struct pm8xxx_coincell_chg *chg_config);
+/**
+ * pm8xxx_smpl_control - enables/disables SMPL detection
+ * @enable: 0 = shutdown PMIC on power loss, 1 = reset PMIC on power loss
+ *
+ * This function enables or disables the Sudden Momentary Power Loss detection
+ * module. If SMPL detection is enabled, then when a sufficiently long power
+ * loss event occurs, the PMIC will automatically reset itself. If SMPL
+ * detection is disabled, then the PMIC will shutdown when power loss occurs.
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_smpl_control(int enable);
+
+/**
+ * pm8xxx_smpl_set_delay - sets the SMPL detection time delay
+ * @delay: enum value corresponding to delay time
+ *
+ * This function sets the time delay of the SMPL detection module. If power
+ * is reapplied within this interval, then the PMIC reset automatically. The
+ * SMPL detection module must be enabled for this delay time to take effect.
+ *
+ * RETURNS: an appropriate -ERRNO error value on error, or zero for success.
+ */
+int pm8xxx_smpl_set_delay(enum pm8xxx_smpl_delay delay);
+
#else
static inline int pm8xxx_reset_pwr_off(int reset)
@@ -101,6 +133,15 @@
{
return -ENODEV;
}
+static inline int pm8xxx_smpl_set_delay(enum pm8xxx_smpl_delay delay)
+{
+ return -ENODEV;
+}
+static inline int pm8xxx_smpl_control(int enable)
+{
+ return -ENODEV;
+}
+
#endif
#endif