1 files changed, 104 insertions, 0 deletions

diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
new file mode 100644
index 000000000000..11e737dbfcf2
--- /dev/null
+++ b/include/linux/regulator/machine.h
@@ -0,0 +1,104 @@
+/*
+ * machine.h -- SoC Regulator support, machine/board driver API.
+ *
+ * Copyright (C) 2007, 2008 Wolfson Microelectronics PLC.
+ *
+ * Author: Liam Girdwood <lg@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Regulator Machine/Board Interface.
+ */
+
+#ifndef __LINUX_REGULATOR_MACHINE_H_
+#define __LINUX_REGULATOR_MACHINE_H_
+
+#include <linux/regulator/consumer.h>
+#include <linux/suspend.h>
+
+struct regulator;
+
+/*
+ * Regulator operation constraint flags. These flags are used to enable
+ * certain regulator operations and can be OR'ed together.
+ *
+ * VOLTAGE:  Regulator output voltage can be changed by software on this
+ *           board/machine.
+ * CURRENT:  Regulator output current can be changed by software on this
+ *           board/machine.
+ * MODE:     Regulator operating mode can be changed by software on this
+ *           board/machine.
+ * STATUS:   Regulator can be enabled and disabled.
+ * DRMS:     Dynamic Regulator Mode Switching is enabled for this regulator.
+ */
+
+#define REGULATOR_CHANGE_VOLTAGE        0x1
+#define REGULATOR_CHANGE_CURRENT        0x2
+#define REGULATOR_CHANGE_MODE           0x4
+#define REGULATOR_CHANGE_STATUS         0x8
+#define REGULATOR_CHANGE_DRMS           0x10
+
+/**
+ * struct regulator_state - regulator state during low power syatem states
+ *
+ * This describes a regulators state during a system wide low power state.
+ */
+struct regulator_state {
+        int uV; /* suspend voltage */
+        unsigned int mode; /* suspend regulator operating mode */
+        int enabled; /* is regulator enabled in this suspend state */
+};
+
+/**
+ * struct regulation_constraints - regulator operating constraints.
+ *
+ * This struct describes regulator and board/machine specific constraints.
+ */
+struct regulation_constraints {
+
+        char *name;
+
+        /* voltage output range (inclusive) - for voltage control */
+        int min_uV;
+        int max_uV;
+
+        /* current output range (inclusive) - for current control */
+        int min_uA;
+        int max_uA;
+
+        /* valid regulator operating modes for this machine */
+        unsigned int valid_modes_mask;
+
+        /* valid operations for regulator on this machine */
+        unsigned int valid_ops_mask;
+
+        /* regulator input voltage - only if supply is another regulator */
+        int input_uV;
+
+        /* regulator suspend states for global PMIC STANDBY/HIBERNATE */
+        struct regulator_state state_disk;
+        struct regulator_state state_mem;
+        struct regulator_state state_standby;
+        suspend_state_t initial_state; /* suspend state to set at init */
+
+        /* constriant flags */
+        unsigned always_on:1;   /* regulator never off when system is on */
+        unsigned boot_on:1;     /* bootloader/firmware enabled regulator */
+        unsigned apply_uV:1;    /* apply uV constraint iff min == max */
+};
+
+int regulator_set_supply(const char *regulator, const char *regulator_supply);
+
+const char *regulator_get_supply(const char *regulator);
+
+int regulator_set_machine_constraints(const char *regulator,
+        struct regulation_constraints *constraints);
+
+int regulator_set_device_supply(const char *regulator, struct device *dev,
+                                const char *supply);
+
+int regulator_suspend_prepare(suspend_state_t state);
+
+#endif