mfd: palmas: Add support for external control configuration
Some of Palmas resources like clock, SMPSs, LDOs etc can be controlled
by external pins ENABLE1, ENABLE2 or NSLEEP.
Add support to configure these resources to externally controlled.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index 1a8dd7a..d2fca1c 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -183,6 +183,50 @@
PALMAS_NUM_REGS,
};
+/* External controll signal name */
+enum {
+ PALMAS_EXT_CONTROL_ENABLE1 = 0x1,
+ PALMAS_EXT_CONTROL_ENABLE2 = 0x2,
+ PALMAS_EXT_CONTROL_NSLEEP = 0x4,
+};
+
+/*
+ * Palmas device resources can be controlled externally for
+ * enabling/disabling it rather than register write through i2c.
+ * Add the external controlled requestor ID for different resources.
+ */
+enum palmas_external_requestor_id {
+ PALMAS_EXTERNAL_REQSTR_ID_REGEN1,
+ PALMAS_EXTERNAL_REQSTR_ID_REGEN2,
+ PALMAS_EXTERNAL_REQSTR_ID_SYSEN1,
+ PALMAS_EXTERNAL_REQSTR_ID_SYSEN2,
+ PALMAS_EXTERNAL_REQSTR_ID_CLK32KG,
+ PALMAS_EXTERNAL_REQSTR_ID_CLK32KGAUDIO,
+ PALMAS_EXTERNAL_REQSTR_ID_REGEN3,
+ PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
+ PALMAS_EXTERNAL_REQSTR_ID_SMPS3,
+ PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
+ PALMAS_EXTERNAL_REQSTR_ID_SMPS6,
+ PALMAS_EXTERNAL_REQSTR_ID_SMPS7,
+ PALMAS_EXTERNAL_REQSTR_ID_SMPS8,
+ PALMAS_EXTERNAL_REQSTR_ID_SMPS9,
+ PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
+ PALMAS_EXTERNAL_REQSTR_ID_LDO1,
+ PALMAS_EXTERNAL_REQSTR_ID_LDO2,
+ PALMAS_EXTERNAL_REQSTR_ID_LDO3,
+ PALMAS_EXTERNAL_REQSTR_ID_LDO4,
+ PALMAS_EXTERNAL_REQSTR_ID_LDO5,
+ PALMAS_EXTERNAL_REQSTR_ID_LDO6,
+ PALMAS_EXTERNAL_REQSTR_ID_LDO7,
+ PALMAS_EXTERNAL_REQSTR_ID_LDO8,
+ PALMAS_EXTERNAL_REQSTR_ID_LDO9,
+ PALMAS_EXTERNAL_REQSTR_ID_LDOLN,
+ PALMAS_EXTERNAL_REQSTR_ID_LDOUSB,
+
+ /* Last entry */
+ PALMAS_EXTERNAL_REQSTR_ID_MAX,
+};
+
struct palmas_pmic_platform_data {
/* An array of pointers to regulator init data indexed by regulator
* ID
@@ -2866,4 +2910,9 @@
return regmap_irq_get_virq(palmas->irq_data, irq);
}
+
+int palmas_ext_control_req_config(struct palmas *palmas,
+ enum palmas_external_requestor_id ext_control_req_id,
+ int ext_ctrl, bool enable);
+
#endif /* __LINUX_MFD_PALMAS_H */