3 files changed, 104 insertions, 99 deletions

diff --git a/Documentation/ABI/testing/sysfs-class-regulator b/Documentation/ABI/testing/sysfs-class-regulator
index 79a4a75b2d2c..3731f6f29bcb 100644
--- a/Documentation/ABI/testing/sysfs-class-regulator
+++ b/Documentation/ABI/testing/sysfs-class-regulator
@@ -1,7 +1,7 @@
 What:           /sys/class/regulator/.../state
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 state. This holds the regulator output state.
@@ -27,7 +27,7 @@ Description:
 What:           /sys/class/regulator/.../type
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 type. This holds the regulator type.
@@ -51,7 +51,7 @@ Description:
 What:           /sys/class/regulator/.../microvolts
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 microvolts. This holds the regulator output voltage setting
@@ -65,7 +65,7 @@ Description:
 What:           /sys/class/regulator/.../microamps
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 microamps. This holds the regulator output current limit
@@ -79,7 +79,7 @@ Description:
 What:           /sys/class/regulator/.../opmode
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 opmode. This holds the regulator operating mode setting.
@@ -102,7 +102,7 @@ Description:
 What:           /sys/class/regulator/.../min_microvolts
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 min_microvolts. This holds the minimum safe working regulator
@@ -116,7 +116,7 @@ Description:
 What:           /sys/class/regulator/.../max_microvolts
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 max_microvolts. This holds the maximum safe working regulator
@@ -130,7 +130,7 @@ Description:
 What:           /sys/class/regulator/.../min_microamps
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 min_microamps. This holds the minimum safe working regulator
@@ -145,7 +145,7 @@ Description:
 What:           /sys/class/regulator/.../max_microamps
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 max_microamps. This holds the maximum safe working regulator
@@ -157,10 +157,23 @@ Description:
                 platform code.
 
 
+What:           /sys/class/regulator/.../name
+Date:           October 2008
+KernelVersion:  2.6.28
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+                Each regulator directory will contain a field called
+                name. This holds a string identifying the regulator for
+                display purposes.
+
+                NOTE: this will be empty if no suitable name is provided
+                by platform or regulator drivers.
+
+
 What:           /sys/class/regulator/.../num_users
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 num_users. This holds the number of consumer devices that
@@ -170,7 +183,7 @@ Description:
 What:           /sys/class/regulator/.../requested_microamps
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 requested_microamps. This holds the total requested load
@@ -181,7 +194,7 @@ Description:
 What:           /sys/class/regulator/.../parent
 Date:           April 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Some regulator directories will contain a link called parent.
                 This points to the parent or supply regulator if one exists.
@@ -189,7 +202,7 @@ Description:
 What:           /sys/class/regulator/.../suspend_mem_microvolts
 Date:           May 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 suspend_mem_microvolts. This holds the regulator output
@@ -203,7 +216,7 @@ Description:
 What:           /sys/class/regulator/.../suspend_disk_microvolts
 Date:           May 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 suspend_disk_microvolts. This holds the regulator output
@@ -217,7 +230,7 @@ Description:
 What:           /sys/class/regulator/.../suspend_standby_microvolts
 Date:           May 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 suspend_standby_microvolts. This holds the regulator output
@@ -231,7 +244,7 @@ Description:
 What:           /sys/class/regulator/.../suspend_mem_mode
 Date:           May 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 suspend_mem_mode. This holds the regulator operating mode
@@ -245,7 +258,7 @@ Description:
 What:           /sys/class/regulator/.../suspend_disk_mode
 Date:           May 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 suspend_disk_mode. This holds the regulator operating mode
@@ -258,7 +271,7 @@ Description:
 What:           /sys/class/regulator/.../suspend_standby_mode
 Date:           May 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 suspend_standby_mode. This holds the regulator operating mode
@@ -272,7 +285,7 @@ Description:
 What:           /sys/class/regulator/.../suspend_mem_state
 Date:           May 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 suspend_mem_state. This holds the regulator operating state
@@ -287,7 +300,7 @@ Description:
 What:           /sys/class/regulator/.../suspend_disk_state
 Date:           May 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 suspend_disk_state. This holds the regulator operating state
@@ -302,7 +315,7 @@ Description:
 What:           /sys/class/regulator/.../suspend_standby_state
 Date:           May 2008
 KernelVersion:  2.6.26
-Contact:        Liam Girdwood <lg@opensource.wolfsonmicro.com>
+Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
                 Each regulator directory will contain a field called
                 suspend_standby_state. This holds the regulator operating
diff --git a/Documentation/power/regulator/machine.txt b/Documentation/power/regulator/machine.txt
index c9a35665cf70..ce3487d99abe 100644
--- a/Documentation/power/regulator/machine.txt
+++ b/Documentation/power/regulator/machine.txt
@@ -2,17 +2,8 @@ Regulator Machine Driver Interface
 ===================================
 
 The regulator machine driver interface is intended for board/machine specific
-initialisation code to configure the regulator subsystem. Typical things that
-machine drivers would do are :-
+initialisation code to configure the regulator subsystem.
 
- 1. Regulator -> Device mapping.
- 2. Regulator supply configuration.
- 3. Power Domain constraint setting.
-
-
-
-1. Regulator -> device mapping
-==============================
 Consider the following machine :-
 
   Regulator-1 -+-> Regulator-2 --> [Consumer A @ 1.8 - 2.0V]
@@ -21,81 +12,82 @@ Consider the following machine :-
 
 The drivers for consumers A & B must be mapped to the correct regulator in
 order to control their power supply. This mapping can be achieved in machine
-initialisation code by calling :-
+initialisation code by creating a struct regulator_consumer_supply for
+each regulator.
+
+struct regulator_consumer_supply {
+        struct device *dev;     /* consumer */
+        const char *supply;     /* consumer supply - e.g. "vcc" */
+};
 
-int regulator_set_device_supply(const char *regulator, struct device *dev,
-                                const char *supply);
+e.g. for the machine above
 
-and is shown with the following code :-
+static struct regulator_consumer_supply regulator1_consumers[] = {
+{
+        .dev    = &platform_consumerB_device.dev,
+        .supply = "Vcc",
+},};
 
-regulator_set_device_supply("Regulator-1", devB, "Vcc");
-regulator_set_device_supply("Regulator-2", devA, "Vcc");
+static struct regulator_consumer_supply regulator2_consumers[] = {
+{
+        .dev    = &platform_consumerA_device.dev,
+        .supply = "Vcc",
+},};
 
 This maps Regulator-1 to the 'Vcc' supply for Consumer B and maps Regulator-2
 to the 'Vcc' supply for Consumer A.
 
-
-2. Regulator supply configuration.
-==================================
-Consider the following machine (again) :-
-
-  Regulator-1 -+-> Regulator-2 --> [Consumer A @ 1.8 - 2.0V]
-               |
-               +-> [Consumer B @ 3.3V]
+Constraints can now be registered by defining a struct regulator_init_data
+for each regulator power domain. This structure also maps the consumers
+to their supply regulator :-
+
+static struct regulator_init_data regulator1_data = {
+        .constraints = {
+                .min_uV = 3300000,
+                .max_uV = 3300000,
+                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+        },
+        .num_consumer_supplies = ARRAY_SIZE(regulator1_consumers),
+        .consumer_supplies = regulator1_consumers,
+};
 
 Regulator-1 supplies power to Regulator-2. This relationship must be registered
 with the core so that Regulator-1 is also enabled when Consumer A enables it's
-supply (Regulator-2).
-
-This relationship can be register with the core via :-
-
-int regulator_set_supply(const char *regulator, const char *regulator_supply);
-
-In this example we would use the following code :-
-
-regulator_set_supply("Regulator-2", "Regulator-1");
-
-Relationships can be queried by calling :-
-
-const char *regulator_get_supply(const char *regulator);
-
-
-3. Power Domain constraint setting.
-===================================
-Each power domain within a system has physical constraints on voltage and
-current. This must be defined in software so that the power domain is always
-operated within specifications.
-
-Consider the following machine (again) :-
-
-  Regulator-1 -+-> Regulator-2 --> [Consumer A @ 1.8 - 2.0V]
-               |
-               +-> [Consumer B @ 3.3V]
-
-This gives us two regulators and two power domains:
-
-                   Domain 1: Regulator-2, Consumer B.
-                   Domain 2: Consumer A.
-
-Constraints can be registered by calling :-
-
-int regulator_set_platform_constraints(const char *regulator,
-        struct regulation_constraints *constraints);
-
-The example is defined as follows :-
-
-struct regulation_constraints domain_1 = {
-        .min_uV = 3300000,
-        .max_uV = 3300000,
-        .valid_modes_mask = REGULATOR_MODE_NORMAL,
+supply (Regulator-2). The supply regulator is set by the supply_regulator_dev
+field below:-
+
+static struct regulator_init_data regulator2_data = {
+        .supply_regulator_dev = &platform_regulator1_device.dev,
+        .constraints = {
+                .min_uV = 1800000,
+                .max_uV = 2000000,
+                .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
+                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+        },
+        .num_consumer_supplies = ARRAY_SIZE(regulator2_consumers),
+        .consumer_supplies = regulator2_consumers,
 };
 
-struct regulation_constraints domain_2 = {
-        .min_uV = 1800000,
-        .max_uV = 2000000,
-        .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
-        .valid_modes_mask = REGULATOR_MODE_NORMAL,
+Finally the regulator devices must be registered in the usual manner.
+
+static struct platform_device regulator_devices[] = {
+{
+        .name = "regulator",
+        .id = DCDC_1,
+        .dev = {
+                .platform_data = &regulator1_data,
+        },
+},
+{
+        .name = "regulator",
+        .id = DCDC_2,
+        .dev = {
+                .platform_data = &regulator2_data,
+        },
+},
 };
+/* register regulator 1 device */
+platform_device_register(&wm8350_regulator_devices[0]);
 
-regulator_set_platform_constraints("Regulator-1", &domain_1);
-regulator_set_platform_constraints("Regulator-2", &domain_2);
+/* register regulator 2 device */
+platform_device_register(&wm8350_regulator_devices[1]);
diff --git a/Documentation/power/regulator/regulator.txt b/Documentation/power/regulator/regulator.txt
index a69050143592..4200accb9bba 100644
--- a/Documentation/power/regulator/regulator.txt
+++ b/Documentation/power/regulator/regulator.txt
@@ -10,11 +10,11 @@ Registration
 
 Drivers can register a regulator by calling :-
 
-struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
-                                          void *reg_data);
+struct regulator_dev *regulator_register(struct device *dev,
+        struct regulator_desc *regulator_desc);
 
-This will register the regulators capabilities and operations the regulator
-core. The core does not touch reg_data (private to regulator driver).
+This will register the regulators capabilities and operations to the regulator
+core.
 
 Regulators can be unregistered by calling :-