Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6: (41 commits)
regulator: Add some brief design documentation
regulator: fix voltage range in da9034 ldo12
regulator/driver: be more specific in nanodoc for is_enabled
regulator/lp3971: drop unnecessary initialization
regulator: drop 'default n'
regulator: fix typos
regulator: fix calculation of voltage range in da9034_set_ldo12_voltage()
regulator: update a filename in documentation
drivers/regulator/Kconfig: fix typo (s/Usersapce/Userspace/) in REGULATOR_USERSPACE_CONSUMER description
REGULATOR Handle positive returncode from enable
regulator: tps650xx - build fixes for x86_64
Fix some regulator documentation
Regulator: Adding TPS65023 and TPS6507x in Kconfig and Makefile
Regulator: Add TPS6507x regulator driver
Regulator: Add TPS65023 regulator driver
regulator: userspace: use sysfs_create_group
regulator: Add GPIO enable control to fixed voltage regulator driver
Regulator: Implement list_voltage for pcf50633 regulator driver.
regulator: regulator_enable() permission checking
regulator: Push locking for regulator_is_enabled() out
...
diff --git a/Documentation/power/regulator/design.txt b/Documentation/power/regulator/design.txt
new file mode 100644
index 0000000..f9b56b7
--- /dev/null
+++ b/Documentation/power/regulator/design.txt
@@ -0,0 +1,33 @@
+Regulator API design notes
+==========================
+
+This document provides a brief, partially structured, overview of some
+of the design considerations which impact the regulator API design.
+
+Safety
+------
+
+ - Errors in regulator configuration can have very serious consequences
+ for the system, potentially including lasting hardware damage.
+ - It is not possible to automatically determine the power confugration
+ of the system - software-equivalent variants of the same chip may
+ have different power requirments, and not all components with power
+ requirements are visible to software.
+
+ => The API should make no changes to the hardware state unless it has
+ specific knowledge that these changes are safe to do perform on
+ this particular system.
+
+Consumer use cases
+------------------
+
+ - The overwhelming majority of devices in a system will have no
+ requirement to do any runtime configuration of their power beyond
+ being able to turn it on or off.
+
+ - Many of the power supplies in the system will be shared between many
+ different consumers.
+
+ => The consumer API should be structured so that these use cases are
+ very easy to handle and so that consumers will work with shared
+ supplies without any additional effort.
diff --git a/Documentation/power/regulator/machine.txt b/Documentation/power/regulator/machine.txt
index ce3487d..63728fe 100644
--- a/Documentation/power/regulator/machine.txt
+++ b/Documentation/power/regulator/machine.txt
@@ -87,7 +87,7 @@
},
};
/* register regulator 1 device */
-platform_device_register(&wm8350_regulator_devices[0]);
+platform_device_register(®ulator_devices[0]);
/* register regulator 2 device */
-platform_device_register(&wm8350_regulator_devices[1]);
+platform_device_register(®ulator_devices[1]);
diff --git a/Documentation/power/regulator/overview.txt b/Documentation/power/regulator/overview.txt
index 0cded69..ffd185b 100644
--- a/Documentation/power/regulator/overview.txt
+++ b/Documentation/power/regulator/overview.txt
@@ -29,7 +29,7 @@
o PMIC - Power Management IC. An IC that contains numerous regulators
- and often contains other susbsystems.
+ and often contains other subsystems.
o Consumer - Electronic device that is supplied power by a regulator.
@@ -168,4 +168,4 @@
userspace via sysfs. This could be used to help monitor device power
consumption and status.
- See Documentation/ABI/testing/regulator-sysfs.txt
+ See Documentation/ABI/testing/sysfs-class-regulator
diff --git a/Documentation/power/regulator/regulator.txt b/Documentation/power/regulator/regulator.txt
index 4200acc..3f8b528 100644
--- a/Documentation/power/regulator/regulator.txt
+++ b/Documentation/power/regulator/regulator.txt
@@ -10,8 +10,9 @@
Drivers can register a regulator by calling :-
-struct regulator_dev *regulator_register(struct device *dev,
- struct regulator_desc *regulator_desc);
+struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
+ struct device *dev, struct regulator_init_data *init_data,
+ void *driver_data);
This will register the regulators capabilities and operations to the regulator
core.
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 2dc42bb..bcbb161 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -1,6 +1,5 @@
menuconfig REGULATOR
bool "Voltage and Current Regulator Support"
- default n
help
Generic Voltage and Current Regulator support.
@@ -30,7 +29,6 @@
config REGULATOR_FIXED_VOLTAGE
tristate "Fixed voltage regulator support"
- default n
help
This driver provides support for fixed voltage regulators,
useful for systems which use a combination of software
@@ -38,7 +36,6 @@
config REGULATOR_VIRTUAL_CONSUMER
tristate "Virtual regulator consumer support"
- default n
help
This driver provides a virtual consumer for the voltage and
current regulator API which provides sysfs controls for
@@ -49,17 +46,15 @@
config REGULATOR_USERSPACE_CONSUMER
tristate "Userspace regulator consumer support"
- default n
help
There are some classes of devices that are controlled entirely
- from user space. Usersapce consumer driver provides ability to
+ from user space. Userspace consumer driver provides ability to
control power supplies for such devices.
If unsure, say no.
config REGULATOR_BQ24022
tristate "TI bq24022 Dual Input 1-Cell Li-Ion Charger IC"
- default n
help
This driver controls a TI bq24022 Charger attached via
GPIOs. The provided current regulator can enable/disable
@@ -69,7 +64,6 @@
config REGULATOR_MAX1586
tristate "Maxim 1586/1587 voltage regulator"
depends on I2C
- default n
help
This driver controls a Maxim 1586 or 1587 voltage output
regulator via I2C bus. The provided regulator is suitable
@@ -147,5 +141,21 @@
AB3100 analog baseband dealing with power regulators
for the system.
+config REGULATOR_TPS65023
+ tristate "TI TPS65023 Power regulators"
+ depends on I2C
+ help
+ This driver supports TPS65023 voltage regulator chips. TPS65023 provides
+ three step-down converters and two general-purpose LDO voltage regulators.
+ It supports TI's software based Class-2 SmartReflex implementation.
+
+config REGULATOR_TPS6507X
+ tristate "TI TPS6507X Power regulators"
+ depends on I2C
+ help
+ This driver supports TPS6507X voltage regulator chips. TPS6507X provides
+ three step-down converters and two general-purpose LDO voltage regulators.
+ It supports TI's software based Class-2 SmartReflex implementation.
+
endif
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 768b331..4257a86 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -23,4 +23,7 @@
obj-$(CONFIG_REGULATOR_MC13783) += mc13783.o
obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
+obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
+obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o
+
ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 91ba9bf..744ea1d 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -37,7 +37,7 @@
*/
struct regulator_map {
struct list_head list;
- struct device *dev;
+ const char *dev_name; /* The dev_name() for the consumer */
const char *supply;
struct regulator_dev *regulator;
};
@@ -232,7 +232,7 @@
struct regulator_dev *rdev = dev_get_drvdata(dev);
const char *name;
- if (rdev->constraints->name)
+ if (rdev->constraints && rdev->constraints->name)
name = rdev->constraints->name;
else if (rdev->desc->name)
name = rdev->desc->name;
@@ -280,8 +280,13 @@
struct device_attribute *attr, char *buf)
{
struct regulator_dev *rdev = dev_get_drvdata(dev);
+ ssize_t ret;
- return regulator_print_state(buf, _regulator_is_enabled(rdev));
+ mutex_lock(&rdev->mutex);
+ ret = regulator_print_state(buf, _regulator_is_enabled(rdev));
+ mutex_unlock(&rdev->mutex);
+
+ return ret;
}
static DEVICE_ATTR(state, 0444, regulator_state_show, NULL);
@@ -857,23 +862,39 @@
* set_consumer_device_supply: Bind a regulator to a symbolic supply
* @rdev: regulator source
* @consumer_dev: device the supply applies to
+ * @consumer_dev_name: dev_name() string for device supply applies to
* @supply: symbolic name for supply
*
* Allows platform initialisation code to map physical regulator
* sources to symbolic names for supplies for use by devices. Devices
* should use these symbolic names to request regulators, avoiding the
* need to provide board-specific regulator names as platform data.
+ *
+ * Only one of consumer_dev and consumer_dev_name may be specified.
*/
static int set_consumer_device_supply(struct regulator_dev *rdev,
- struct device *consumer_dev, const char *supply)
+ struct device *consumer_dev, const char *consumer_dev_name,
+ const char *supply)
{
struct regulator_map *node;
+ int has_dev;
+
+ if (consumer_dev && consumer_dev_name)
+ return -EINVAL;
+
+ if (!consumer_dev_name && consumer_dev)
+ consumer_dev_name = dev_name(consumer_dev);
if (supply == NULL)
return -EINVAL;
+ if (consumer_dev_name != NULL)
+ has_dev = 1;
+ else
+ has_dev = 0;
+
list_for_each_entry(node, ®ulator_map_list, list) {
- if (consumer_dev != node->dev)
+ if (consumer_dev_name != node->dev_name)
continue;
if (strcmp(node->supply, supply) != 0)
continue;
@@ -886,30 +907,45 @@
return -EBUSY;
}
- node = kmalloc(sizeof(struct regulator_map), GFP_KERNEL);
+ node = kzalloc(sizeof(struct regulator_map), GFP_KERNEL);
if (node == NULL)
return -ENOMEM;
node->regulator = rdev;
- node->dev = consumer_dev;
node->supply = supply;
+ if (has_dev) {
+ node->dev_name = kstrdup(consumer_dev_name, GFP_KERNEL);
+ if (node->dev_name == NULL) {
+ kfree(node);
+ return -ENOMEM;
+ }
+ }
+
list_add(&node->list, ®ulator_map_list);
return 0;
}
static void unset_consumer_device_supply(struct regulator_dev *rdev,
- struct device *consumer_dev)
+ const char *consumer_dev_name, struct device *consumer_dev)
{
struct regulator_map *node, *n;
+ if (consumer_dev && !consumer_dev_name)
+ consumer_dev_name = dev_name(consumer_dev);
+
list_for_each_entry_safe(node, n, ®ulator_map_list, list) {
- if (rdev == node->regulator &&
- consumer_dev == node->dev) {
- list_del(&node->list);
- kfree(node);
- return;
- }
+ if (rdev != node->regulator)
+ continue;
+
+ if (consumer_dev_name && node->dev_name &&
+ strcmp(consumer_dev_name, node->dev_name))
+ continue;
+
+ list_del(&node->list);
+ kfree(node->dev_name);
+ kfree(node);
+ return;
}
}
@@ -920,6 +956,7 @@
list_for_each_entry_safe(node, n, ®ulator_map_list, list) {
if (rdev == node->regulator) {
list_del(&node->list);
+ kfree(node->dev_name);
kfree(node);
return;
}
@@ -1001,6 +1038,77 @@
return NULL;
}
+/* Internal regulator request function */
+static struct regulator *_regulator_get(struct device *dev, const char *id,
+ int exclusive)
+{
+ struct regulator_dev *rdev;
+ struct regulator_map *map;
+ struct regulator *regulator = ERR_PTR(-ENODEV);
+ const char *devname = NULL;
+ int ret;
+
+ if (id == NULL) {
+ printk(KERN_ERR "regulator: get() with no identifier\n");
+ return regulator;
+ }
+
+ if (dev)
+ devname = dev_name(dev);
+
+ mutex_lock(®ulator_list_mutex);
+
+ list_for_each_entry(map, ®ulator_map_list, list) {
+ /* If the mapping has a device set up it must match */
+ if (map->dev_name &&
+ (!devname || strcmp(map->dev_name, devname)))
+ continue;
+
+ if (strcmp(map->supply, id) == 0) {
+ rdev = map->regulator;
+ goto found;
+ }
+ }
+ mutex_unlock(®ulator_list_mutex);
+ return regulator;
+
+found:
+ if (rdev->exclusive) {
+ regulator = ERR_PTR(-EPERM);
+ goto out;
+ }
+
+ if (exclusive && rdev->open_count) {
+ regulator = ERR_PTR(-EBUSY);
+ goto out;
+ }
+
+ if (!try_module_get(rdev->owner))
+ goto out;
+
+ regulator = create_regulator(rdev, dev, id);
+ if (regulator == NULL) {
+ regulator = ERR_PTR(-ENOMEM);
+ module_put(rdev->owner);
+ }
+
+ rdev->open_count++;
+ if (exclusive) {
+ rdev->exclusive = 1;
+
+ ret = _regulator_is_enabled(rdev);
+ if (ret > 0)
+ rdev->use_count = 1;
+ else
+ rdev->use_count = 0;
+ }
+
+out:
+ mutex_unlock(®ulator_list_mutex);
+
+ return regulator;
+}
+
/**
* regulator_get - lookup and obtain a reference to a regulator.
* @dev: device for regulator "consumer"
@@ -1016,44 +1124,38 @@
*/
struct regulator *regulator_get(struct device *dev, const char *id)
{
- struct regulator_dev *rdev;
- struct regulator_map *map;
- struct regulator *regulator = ERR_PTR(-ENODEV);
-
- if (id == NULL) {
- printk(KERN_ERR "regulator: get() with no identifier\n");
- return regulator;
- }
-
- mutex_lock(®ulator_list_mutex);
-
- list_for_each_entry(map, ®ulator_map_list, list) {
- if (dev == map->dev &&
- strcmp(map->supply, id) == 0) {
- rdev = map->regulator;
- goto found;
- }
- }
- mutex_unlock(®ulator_list_mutex);
- return regulator;
-
-found:
- if (!try_module_get(rdev->owner))
- goto out;
-
- regulator = create_regulator(rdev, dev, id);
- if (regulator == NULL) {
- regulator = ERR_PTR(-ENOMEM);
- module_put(rdev->owner);
- }
-
-out:
- mutex_unlock(®ulator_list_mutex);
- return regulator;
+ return _regulator_get(dev, id, 0);
}
EXPORT_SYMBOL_GPL(regulator_get);
/**
+ * regulator_get_exclusive - obtain exclusive access to a regulator.
+ * @dev: device for regulator "consumer"
+ * @id: Supply name or regulator ID.
+ *
+ * Returns a struct regulator corresponding to the regulator producer,
+ * or IS_ERR() condition containing errno. Other consumers will be
+ * unable to obtain this reference is held and the use count for the
+ * regulator will be initialised to reflect the current state of the
+ * regulator.
+ *
+ * This is intended for use by consumers which cannot tolerate shared
+ * use of the regulator such as those which need to force the
+ * regulator off for correct operation of the hardware they are
+ * controlling.
+ *
+ * Use of supply names configured via regulator_set_device_supply() is
+ * strongly encouraged. It is recommended that the supply name used
+ * should match the name used for the supply and/or the relevant
+ * device pins in the datasheet.
+ */
+struct regulator *regulator_get_exclusive(struct device *dev, const char *id)
+{
+ return _regulator_get(dev, id, 1);
+}
+EXPORT_SYMBOL_GPL(regulator_get_exclusive);
+
+/**
* regulator_put - "free" the regulator source
* @regulator: regulator source
*
@@ -1081,21 +1183,29 @@
list_del(®ulator->list);
kfree(regulator);
+ rdev->open_count--;
+ rdev->exclusive = 0;
+
module_put(rdev->owner);
mutex_unlock(®ulator_list_mutex);
}
EXPORT_SYMBOL_GPL(regulator_put);
+static int _regulator_can_change_status(struct regulator_dev *rdev)
+{
+ if (!rdev->constraints)
+ return 0;
+
+ if (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_STATUS)
+ return 1;
+ else
+ return 0;
+}
+
/* locks held by regulator_enable() */
static int _regulator_enable(struct regulator_dev *rdev)
{
- int ret = -EINVAL;
-
- if (!rdev->constraints) {
- printk(KERN_ERR "%s: %s has no constraints\n",
- __func__, rdev->desc->name);
- return ret;
- }
+ int ret;
/* do we need to enable the supply regulator first */
if (rdev->supply) {
@@ -1108,24 +1218,35 @@
}
/* check voltage and requested load before enabling */
- if (rdev->desc->ops->enable) {
+ if (rdev->constraints &&
+ (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_DRMS))
+ drms_uA_update(rdev);
- if (rdev->constraints &&
- (rdev->constraints->valid_ops_mask &
- REGULATOR_CHANGE_DRMS))
- drms_uA_update(rdev);
+ if (rdev->use_count == 0) {
+ /* The regulator may on if it's not switchable or left on */
+ ret = _regulator_is_enabled(rdev);
+ if (ret == -EINVAL || ret == 0) {
+ if (!_regulator_can_change_status(rdev))
+ return -EPERM;
- ret = rdev->desc->ops->enable(rdev);
- if (ret < 0) {
- printk(KERN_ERR "%s: failed to enable %s: %d\n",
+ if (rdev->desc->ops->enable) {
+ ret = rdev->desc->ops->enable(rdev);
+ if (ret < 0)
+ return ret;
+ } else {
+ return -EINVAL;
+ }
+ } else if (ret < 0) {
+ printk(KERN_ERR "%s: is_enabled() failed for %s: %d\n",
__func__, rdev->desc->name, ret);
return ret;
}
- rdev->use_count++;
- return ret;
+ /* Fallthrough on positive return values - already enabled */
}
- return ret;
+ rdev->use_count++;
+
+ return 0;
}
/**
@@ -1165,7 +1286,8 @@
if (rdev->use_count == 1 && !rdev->constraints->always_on) {
/* we are last user */
- if (rdev->desc->ops->disable) {
+ if (_regulator_can_change_status(rdev) &&
+ rdev->desc->ops->disable) {
ret = rdev->desc->ops->disable(rdev);
if (ret < 0) {
printk(KERN_ERR "%s: failed to disable %s\n",
@@ -1265,20 +1387,11 @@
static int _regulator_is_enabled(struct regulator_dev *rdev)
{
- int ret;
-
- mutex_lock(&rdev->mutex);
-
/* sanity check */
- if (!rdev->desc->ops->is_enabled) {
- ret = -EINVAL;
- goto out;
- }
+ if (!rdev->desc->ops->is_enabled)
+ return -EINVAL;
- ret = rdev->desc->ops->is_enabled(rdev);
-out:
- mutex_unlock(&rdev->mutex);
- return ret;
+ return rdev->desc->ops->is_enabled(rdev);
}
/**
@@ -1295,7 +1408,13 @@
*/
int regulator_is_enabled(struct regulator *regulator)
{
- return _regulator_is_enabled(regulator->rdev);
+ int ret;
+
+ mutex_lock(®ulator->rdev->mutex);
+ ret = _regulator_is_enabled(regulator->rdev);
+ mutex_unlock(®ulator->rdev->mutex);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(regulator_is_enabled);
@@ -1350,6 +1469,35 @@
EXPORT_SYMBOL_GPL(regulator_list_voltage);
/**
+ * regulator_is_supported_voltage - check if a voltage range can be supported
+ *
+ * @regulator: Regulator to check.
+ * @min_uV: Minimum required voltage in uV.
+ * @max_uV: Maximum required voltage in uV.
+ *
+ * Returns a boolean or a negative error code.
+ */
+int regulator_is_supported_voltage(struct regulator *regulator,
+ int min_uV, int max_uV)
+{
+ int i, voltages, ret;
+
+ ret = regulator_count_voltages(regulator);
+ if (ret < 0)
+ return ret;
+ voltages = ret;
+
+ for (i = 0; i < voltages; i++) {
+ ret = regulator_list_voltage(regulator, i);
+
+ if (ret >= min_uV && ret <= max_uV)
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
* regulator_set_voltage - set regulator output voltage
* @regulator: regulator source
* @min_uV: Minimum required voltage in uV
@@ -2091,11 +2239,13 @@
for (i = 0; i < init_data->num_consumer_supplies; i++) {
ret = set_consumer_device_supply(rdev,
init_data->consumer_supplies[i].dev,
+ init_data->consumer_supplies[i].dev_name,
init_data->consumer_supplies[i].supply);
if (ret < 0) {
for (--i; i >= 0; i--)
unset_consumer_device_supply(rdev,
- init_data->consumer_supplies[i].dev);
+ init_data->consumer_supplies[i].dev_name,
+ init_data->consumer_supplies[i].dev);
goto scrub;
}
}
@@ -2130,6 +2280,7 @@
return;
mutex_lock(®ulator_list_mutex);
+ WARN_ON(rdev->open_count);
unset_regulator_supplies(rdev);
list_del(&rdev->list);
if (rdev->supply)
@@ -2277,14 +2428,14 @@
ops = rdev->desc->ops;
c = rdev->constraints;
- if (c->name)
+ if (c && c->name)
name = c->name;
else if (rdev->desc->name)
name = rdev->desc->name;
else
name = "regulator";
- if (!ops->disable || c->always_on)
+ if (!ops->disable || (c && c->always_on))
continue;
mutex_lock(&rdev->mutex);
diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c
index b8b89ef..aa224d9 100644
--- a/drivers/regulator/da903x.c
+++ b/drivers/regulator/da903x.c
@@ -64,6 +64,14 @@
#define DA9034_MDTV2 (0x33)
#define DA9034_MVRC (0x34)
+/* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */
+#define DA9035_OVER3 (0x12)
+#define DA9035_VCC2 (0x1f)
+#define DA9035_3DTV1 (0x2c)
+#define DA9035_3DTV2 (0x2d)
+#define DA9035_3VRC (0x2e)
+#define DA9035_AUTOSKIP (0x2f)
+
struct da903x_regulator_info {
struct regulator_desc desc;
@@ -79,6 +87,10 @@
int enable_bit;
};
+static int da9034_ldo12_data[] = { 1700, 1750, 1800, 1850, 1900, 1950,
+ 2000, 2050, 2700, 2750, 2800, 2850,
+ 2900, 2950, 3000, 3050 };
+
static inline struct device *to_da903x_dev(struct regulator_dev *rdev)
{
return rdev_get_dev(rdev)->parent->parent;
@@ -162,6 +174,17 @@
return !!(reg_val & (1 << info->enable_bit));
}
+static int da903x_list_voltage(struct regulator_dev *rdev, unsigned selector)
+{
+ struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
+ int ret;
+
+ ret = info->min_uV + info->step_uV * selector;
+ if (ret > info->max_uV)
+ return -EINVAL;
+ return ret;
+}
+
/* DA9030 specific operations */
static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
@@ -278,7 +301,7 @@
}
val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
- val = (val > 7 || val < 20) ? 8 : val - 12;
+ val = (val >= 20) ? val - 12 : ((val > 7) ? 8 : val);
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
@@ -305,9 +328,18 @@
return info->min_uV + info->step_uV * val;
}
+static int da9034_list_ldo12_voltage(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ if (selector > ARRAY_SIZE(da9034_ldo12_data))
+ return -EINVAL;
+ return da9034_ldo12_data[selector] * 1000;
+}
+
static struct regulator_ops da903x_regulator_ldo_ops = {
.set_voltage = da903x_set_ldo_voltage,
.get_voltage = da903x_get_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -317,6 +349,7 @@
static struct regulator_ops da9030_regulator_ldo14_ops = {
.set_voltage = da9030_set_ldo14_voltage,
.get_voltage = da9030_get_ldo14_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -326,6 +359,7 @@
static struct regulator_ops da9030_regulator_ldo1_15_ops = {
.set_voltage = da9030_set_ldo1_15_voltage,
.get_voltage = da903x_get_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -334,6 +368,7 @@
static struct regulator_ops da9034_regulator_dvc_ops = {
.set_voltage = da9034_set_dvc_voltage,
.get_voltage = da903x_get_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -343,6 +378,7 @@
static struct regulator_ops da9034_regulator_ldo12_ops = {
.set_voltage = da9034_set_ldo12_voltage,
.get_voltage = da9034_get_ldo12_voltage,
+ .list_voltage = da9034_list_ldo12_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -355,6 +391,7 @@
.ops = &da903x_regulator_ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.id = _pmic##_ID_LDO##_id, \
+ .n_voltages = (step) ? ((max - min) / step + 1) : 1, \
.owner = THIS_MODULE, \
}, \
.min_uV = (min) * 1000, \
@@ -367,24 +404,25 @@
.enable_bit = (ebit), \
}
-#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
+#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
{ \
.desc = { \
.name = #_id, \
.ops = &da9034_regulator_dvc_ops, \
.type = REGULATOR_VOLTAGE, \
- .id = DA9034_ID_##_id, \
+ .id = _pmic##_ID_##_id, \
+ .n_voltages = (step) ? ((max - min) / step + 1) : 1, \
.owner = THIS_MODULE, \
}, \
.min_uV = (min) * 1000, \
.max_uV = (max) * 1000, \
.step_uV = (step) * 1000, \
- .vol_reg = DA9034_##vreg, \
+ .vol_reg = _pmic##_##vreg, \
.vol_shift = (0), \
.vol_nbits = (nbits), \
- .update_reg = DA9034_##ureg, \
+ .update_reg = _pmic##_##ureg, \
.update_bit = (ubit), \
- .enable_reg = DA9034_##ereg, \
+ .enable_reg = _pmic##_##ereg, \
.enable_bit = (ebit), \
}
@@ -394,8 +432,22 @@
#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
+#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
+ DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \
+ ereg, ebit)
+
+#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
+ DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \
+ ereg, ebit)
+
+#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
+ DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \
+ ereg, ebit)
+
static struct da903x_regulator_info da903x_regulator_info[] = {
/* DA9030 */
+ DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0),
+
DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1),
DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2),
DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3),
@@ -417,9 +469,9 @@
DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */
/* DA9034 */
- DA9034_DVC(BUCK1, 725, 1500, 25, ADTV1, 5, VCC1, 0, OVER1, 0),
- DA9034_DVC(BUCK2, 725, 1500, 25, CDTV1, 5, VCC1, 2, OVER1, 1),
- DA9034_DVC(LDO2, 725, 1500, 25, SDTV1, 5, VCC1, 4, OVER1, 2),
+ DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0),
+ DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1),
+ DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2),
DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),
DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5),
@@ -435,6 +487,9 @@
DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),
DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),
DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */
+
+ /* DA9035 */
+ DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3),
};
static inline struct da903x_regulator_info *find_regulator_info(int id)
@@ -462,8 +517,10 @@
}
/* Workaround for the weird LDO12 voltage setting */
- if (ri->desc.id == DA9034_ID_LDO12)
+ if (ri->desc.id == DA9034_ID_LDO12) {
ri->desc.ops = &da9034_regulator_ldo12_ops;
+ ri->desc.n_voltages = ARRAY_SIZE(da9034_ldo12_data);
+ }
if (ri->desc.id == DA9030_ID_LDO14)
ri->desc.ops = &da9030_regulator_ldo14_ops;
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index cdc674f..f8b2957 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -5,6 +5,9 @@
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
+ * Copyright (c) 2009 Nokia Corporation
+ * Roger Quadros <ext-roger.quadros@nokia.com>
+ *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
@@ -20,20 +23,45 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/fixed.h>
+#include <linux/gpio.h>
struct fixed_voltage_data {
struct regulator_desc desc;
struct regulator_dev *dev;
int microvolts;
+ int gpio;
+ unsigned enable_high:1;
+ unsigned is_enabled:1;
};
static int fixed_voltage_is_enabled(struct regulator_dev *dev)
{
- return 1;
+ struct fixed_voltage_data *data = rdev_get_drvdata(dev);
+
+ return data->is_enabled;
}
static int fixed_voltage_enable(struct regulator_dev *dev)
{
+ struct fixed_voltage_data *data = rdev_get_drvdata(dev);
+
+ if (gpio_is_valid(data->gpio)) {
+ gpio_set_value_cansleep(data->gpio, data->enable_high);
+ data->is_enabled = 1;
+ }
+
+ return 0;
+}
+
+static int fixed_voltage_disable(struct regulator_dev *dev)
+{
+ struct fixed_voltage_data *data = rdev_get_drvdata(dev);
+
+ if (gpio_is_valid(data->gpio)) {
+ gpio_set_value_cansleep(data->gpio, !data->enable_high);
+ data->is_enabled = 0;
+ }
+
return 0;
}
@@ -58,6 +86,7 @@
static struct regulator_ops fixed_voltage_ops = {
.is_enabled = fixed_voltage_is_enabled,
.enable = fixed_voltage_enable,
+ .disable = fixed_voltage_disable,
.get_voltage = fixed_voltage_get_voltage,
.list_voltage = fixed_voltage_list_voltage,
};
@@ -70,12 +99,14 @@
drvdata = kzalloc(sizeof(struct fixed_voltage_data), GFP_KERNEL);
if (drvdata == NULL) {
+ dev_err(&pdev->dev, "Failed to allocate device data\n");
ret = -ENOMEM;
goto err;
}
drvdata->desc.name = kstrdup(config->supply_name, GFP_KERNEL);
if (drvdata->desc.name == NULL) {
+ dev_err(&pdev->dev, "Failed to allocate supply name\n");
ret = -ENOMEM;
goto err;
}
@@ -85,12 +116,62 @@
drvdata->desc.n_voltages = 1;
drvdata->microvolts = config->microvolts;
+ drvdata->gpio = config->gpio;
+
+ if (gpio_is_valid(config->gpio)) {
+ drvdata->enable_high = config->enable_high;
+
+ /* FIXME: Remove below print warning
+ *
+ * config->gpio must be set to -EINVAL by platform code if
+ * GPIO control is not required. However, early adopters
+ * not requiring GPIO control may forget to initialize
+ * config->gpio to -EINVAL. This will cause GPIO 0 to be used
+ * for GPIO control.
+ *
+ * This warning will be removed once there are a couple of users
+ * for this driver.
+ */
+ if (!config->gpio)
+ dev_warn(&pdev->dev,
+ "using GPIO 0 for regulator enable control\n");
+
+ ret = gpio_request(config->gpio, config->supply_name);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Could not obtain regulator enable GPIO %d: %d\n",
+ config->gpio, ret);
+ goto err_name;
+ }
+
+ /* set output direction without changing state
+ * to prevent glitch
+ */
+ drvdata->is_enabled = config->enabled_at_boot;
+ ret = drvdata->is_enabled ?
+ config->enable_high : !config->enable_high;
+
+ ret = gpio_direction_output(config->gpio, ret);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Could not configure regulator enable GPIO %d direction: %d\n",
+ config->gpio, ret);
+ goto err_gpio;
+ }
+
+ } else {
+ /* Regulator without GPIO control is considered
+ * always enabled
+ */
+ drvdata->is_enabled = 1;
+ }
drvdata->dev = regulator_register(&drvdata->desc, &pdev->dev,
config->init_data, drvdata);
if (IS_ERR(drvdata->dev)) {
ret = PTR_ERR(drvdata->dev);
- goto err_name;
+ dev_err(&pdev->dev, "Failed to register regulator: %d\n", ret);
+ goto err_gpio;
}
platform_set_drvdata(pdev, drvdata);
@@ -100,6 +181,9 @@
return 0;
+err_gpio:
+ if (gpio_is_valid(config->gpio))
+ gpio_free(config->gpio);
err_name:
kfree(drvdata->desc.name);
err:
@@ -115,6 +199,9 @@
kfree(drvdata->desc.name);
kfree(drvdata);
+ if (gpio_is_valid(drvdata->gpio))
+ gpio_free(drvdata->gpio);
+
return 0;
}
diff --git a/drivers/regulator/lp3971.c b/drivers/regulator/lp3971.c
index a61018a..7803a32 100644
--- a/drivers/regulator/lp3971.c
+++ b/drivers/regulator/lp3971.c
@@ -541,7 +541,7 @@
static int __init lp3971_module_init(void)
{
- int ret = -ENODEV;
+ int ret;
ret = i2c_add_driver(&lp3971_i2c_driver);
if (ret != 0)
diff --git a/drivers/regulator/pcf50633-regulator.c b/drivers/regulator/pcf50633-regulator.c
index 8e14900..0803ffe 100644
--- a/drivers/regulator/pcf50633-regulator.c
+++ b/drivers/regulator/pcf50633-regulator.c
@@ -24,11 +24,12 @@
#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/pmic.h>
-#define PCF50633_REGULATOR(_name, _id) \
+#define PCF50633_REGULATOR(_name, _id, _n) \
{ \
.name = _name, \
.id = _id, \
.ops = &pcf50633_regulator_ops, \
+ .n_voltages = _n, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
}
@@ -149,33 +150,20 @@
return pcf50633_reg_write(pcf, regnr, volt_bits);
}
-static int pcf50633_regulator_get_voltage(struct regulator_dev *rdev)
+static int pcf50633_regulator_voltage_value(enum pcf50633_regulator_id id,
+ u8 bits)
{
- struct pcf50633 *pcf;
- int regulator_id, millivolts, volt_bits;
- u8 regnr;
+ int millivolts;
- pcf = rdev_get_drvdata(rdev);;
-
- regulator_id = rdev_get_id(rdev);
- if (regulator_id >= PCF50633_NUM_REGULATORS)
- return -EINVAL;
-
- regnr = pcf50633_regulator_registers[regulator_id];
-
- volt_bits = pcf50633_reg_read(pcf, regnr);
- if (volt_bits < 0)
- return -1;
-
- switch (regulator_id) {
+ switch (id) {
case PCF50633_REGULATOR_AUTO:
- millivolts = auto_voltage_value(volt_bits);
+ millivolts = auto_voltage_value(bits);
break;
case PCF50633_REGULATOR_DOWN1:
- millivolts = down_voltage_value(volt_bits);
+ millivolts = down_voltage_value(bits);
break;
case PCF50633_REGULATOR_DOWN2:
- millivolts = down_voltage_value(volt_bits);
+ millivolts = down_voltage_value(bits);
break;
case PCF50633_REGULATOR_LDO1:
case PCF50633_REGULATOR_LDO2:
@@ -184,7 +172,7 @@
case PCF50633_REGULATOR_LDO5:
case PCF50633_REGULATOR_LDO6:
case PCF50633_REGULATOR_HCLDO:
- millivolts = ldo_voltage_value(volt_bits);
+ millivolts = ldo_voltage_value(bits);
break;
default:
return -EINVAL;
@@ -193,6 +181,49 @@
return millivolts * 1000;
}
+static int pcf50633_regulator_get_voltage(struct regulator_dev *rdev)
+{
+ struct pcf50633 *pcf;
+ int regulator_id;
+ u8 volt_bits, regnr;
+
+ pcf = rdev_get_drvdata(rdev);
+
+ regulator_id = rdev_get_id(rdev);
+ if (regulator_id >= PCF50633_NUM_REGULATORS)
+ return -EINVAL;
+
+ regnr = pcf50633_regulator_registers[regulator_id];
+
+ volt_bits = pcf50633_reg_read(pcf, regnr);
+
+ return pcf50633_regulator_voltage_value(regulator_id, volt_bits);
+}
+
+static int pcf50633_regulator_list_voltage(struct regulator_dev *rdev,
+ unsigned int index)
+{
+ struct pcf50633 *pcf;
+ int regulator_id;
+
+ pcf = rdev_get_drvdata(rdev);
+
+ regulator_id = rdev_get_id(rdev);
+
+ switch (regulator_id) {
+ case PCF50633_REGULATOR_AUTO:
+ index += 0x2f;
+ break;
+ case PCF50633_REGULATOR_HCLDO:
+ index += 0x01;
+ break;
+ default:
+ break;
+ }
+
+ return pcf50633_regulator_voltage_value(regulator_id, index);
+}
+
static int pcf50633_regulator_enable(struct regulator_dev *rdev)
{
struct pcf50633 *pcf = rdev_get_drvdata(rdev);
@@ -246,6 +277,7 @@
static struct regulator_ops pcf50633_regulator_ops = {
.set_voltage = pcf50633_regulator_set_voltage,
.get_voltage = pcf50633_regulator_get_voltage,
+ .list_voltage = pcf50633_regulator_list_voltage,
.enable = pcf50633_regulator_enable,
.disable = pcf50633_regulator_disable,
.is_enabled = pcf50633_regulator_is_enabled,
@@ -253,27 +285,27 @@
static struct regulator_desc regulators[] = {
[PCF50633_REGULATOR_AUTO] =
- PCF50633_REGULATOR("auto", PCF50633_REGULATOR_AUTO),
+ PCF50633_REGULATOR("auto", PCF50633_REGULATOR_AUTO, 80),
[PCF50633_REGULATOR_DOWN1] =
- PCF50633_REGULATOR("down1", PCF50633_REGULATOR_DOWN1),
+ PCF50633_REGULATOR("down1", PCF50633_REGULATOR_DOWN1, 95),
[PCF50633_REGULATOR_DOWN2] =
- PCF50633_REGULATOR("down2", PCF50633_REGULATOR_DOWN2),
+ PCF50633_REGULATOR("down2", PCF50633_REGULATOR_DOWN2, 95),
[PCF50633_REGULATOR_LDO1] =
- PCF50633_REGULATOR("ldo1", PCF50633_REGULATOR_LDO1),
+ PCF50633_REGULATOR("ldo1", PCF50633_REGULATOR_LDO1, 27),
[PCF50633_REGULATOR_LDO2] =
- PCF50633_REGULATOR("ldo2", PCF50633_REGULATOR_LDO2),
+ PCF50633_REGULATOR("ldo2", PCF50633_REGULATOR_LDO2, 27),
[PCF50633_REGULATOR_LDO3] =
- PCF50633_REGULATOR("ldo3", PCF50633_REGULATOR_LDO3),
+ PCF50633_REGULATOR("ldo3", PCF50633_REGULATOR_LDO3, 27),
[PCF50633_REGULATOR_LDO4] =
- PCF50633_REGULATOR("ldo4", PCF50633_REGULATOR_LDO4),
+ PCF50633_REGULATOR("ldo4", PCF50633_REGULATOR_LDO4, 27),
[PCF50633_REGULATOR_LDO5] =
- PCF50633_REGULATOR("ldo5", PCF50633_REGULATOR_LDO5),
+ PCF50633_REGULATOR("ldo5", PCF50633_REGULATOR_LDO5, 27),
[PCF50633_REGULATOR_LDO6] =
- PCF50633_REGULATOR("ldo6", PCF50633_REGULATOR_LDO6),
+ PCF50633_REGULATOR("ldo6", PCF50633_REGULATOR_LDO6, 27),
[PCF50633_REGULATOR_HCLDO] =
- PCF50633_REGULATOR("hcldo", PCF50633_REGULATOR_HCLDO),
+ PCF50633_REGULATOR("hcldo", PCF50633_REGULATOR_HCLDO, 26),
[PCF50633_REGULATOR_MEMLDO] =
- PCF50633_REGULATOR("memldo", PCF50633_REGULATOR_MEMLDO),
+ PCF50633_REGULATOR("memldo", PCF50633_REGULATOR_MEMLDO, 0),
};
static int __devinit pcf50633_regulator_probe(struct platform_device *pdev)
diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c
new file mode 100644
index 0000000..07fda0a
--- /dev/null
+++ b/drivers/regulator/tps65023-regulator.c
@@ -0,0 +1,632 @@
+/*
+ * tps65023-regulator.c
+ *
+ * Supports TPS65023 Regulator
+ *
+ * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+
+/* Register definitions */
+#define TPS65023_REG_VERSION 0
+#define TPS65023_REG_PGOODZ 1
+#define TPS65023_REG_MASK 2
+#define TPS65023_REG_REG_CTRL 3
+#define TPS65023_REG_CON_CTRL 4
+#define TPS65023_REG_CON_CTRL2 5
+#define TPS65023_REG_DEF_CORE 6
+#define TPS65023_REG_DEFSLEW 7
+#define TPS65023_REG_LDO_CTRL 8
+
+/* PGOODZ bitfields */
+#define TPS65023_PGOODZ_PWRFAILZ BIT(7)
+#define TPS65023_PGOODZ_LOWBATTZ BIT(6)
+#define TPS65023_PGOODZ_VDCDC1 BIT(5)
+#define TPS65023_PGOODZ_VDCDC2 BIT(4)
+#define TPS65023_PGOODZ_VDCDC3 BIT(3)
+#define TPS65023_PGOODZ_LDO2 BIT(2)
+#define TPS65023_PGOODZ_LDO1 BIT(1)
+
+/* MASK bitfields */
+#define TPS65023_MASK_PWRFAILZ BIT(7)
+#define TPS65023_MASK_LOWBATTZ BIT(6)
+#define TPS65023_MASK_VDCDC1 BIT(5)
+#define TPS65023_MASK_VDCDC2 BIT(4)
+#define TPS65023_MASK_VDCDC3 BIT(3)
+#define TPS65023_MASK_LDO2 BIT(2)
+#define TPS65023_MASK_LDO1 BIT(1)
+
+/* REG_CTRL bitfields */
+#define TPS65023_REG_CTRL_VDCDC1_EN BIT(5)
+#define TPS65023_REG_CTRL_VDCDC2_EN BIT(4)
+#define TPS65023_REG_CTRL_VDCDC3_EN BIT(3)
+#define TPS65023_REG_CTRL_LDO2_EN BIT(2)
+#define TPS65023_REG_CTRL_LDO1_EN BIT(1)
+
+/* LDO_CTRL bitfields */
+#define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4)
+#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0xF0 >> ((ldo_id)*4))
+
+/* Number of step-down converters available */
+#define TPS65023_NUM_DCDC 3
+/* Number of LDO voltage regulators available */
+#define TPS65023_NUM_LDO 2
+/* Number of total regulators available */
+#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO)
+
+/* DCDCs */
+#define TPS65023_DCDC_1 0
+#define TPS65023_DCDC_2 1
+#define TPS65023_DCDC_3 2
+/* LDOs */
+#define TPS65023_LDO_1 3
+#define TPS65023_LDO_2 4
+
+#define TPS65023_MAX_REG_ID TPS65023_LDO_2
+
+/* Supported voltage values for regulators */
+static const u16 VDCDC1_VSEL_table[] = {
+ 800, 825, 850, 875,
+ 900, 925, 950, 975,
+ 1000, 1025, 1050, 1075,
+ 1100, 1125, 1150, 1175,
+ 1200, 1225, 1250, 1275,
+ 1300, 1325, 1350, 1375,
+ 1400, 1425, 1450, 1475,
+ 1500, 1525, 1550, 1600,
+};
+
+static const u16 LDO1_VSEL_table[] = {
+ 1000, 1100, 1300, 1800,
+ 2200, 2600, 2800, 3150,
+};
+
+static const u16 LDO2_VSEL_table[] = {
+ 1050, 1200, 1300, 1800,
+ 2500, 2800, 3000, 3300,
+};
+
+static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDC1_VSEL_table),
+ 0, 0, ARRAY_SIZE(LDO1_VSEL_table),
+ ARRAY_SIZE(LDO2_VSEL_table)};
+
+/* Regulator specific details */
+struct tps_info {
+ const char *name;
+ unsigned min_uV;
+ unsigned max_uV;
+ bool fixed;
+ u8 table_len;
+ const u16 *table;
+};
+
+/* PMIC details */
+struct tps_pmic {
+ struct regulator_desc desc[TPS65023_NUM_REGULATOR];
+ struct i2c_client *client;
+ struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
+ const struct tps_info *info[TPS65023_NUM_REGULATOR];
+ struct mutex io_lock;
+};
+
+static inline int tps_65023_read(struct tps_pmic *tps, u8 reg)
+{
+ return i2c_smbus_read_byte_data(tps->client, reg);
+}
+
+static inline int tps_65023_write(struct tps_pmic *tps, u8 reg, u8 val)
+{
+ return i2c_smbus_write_byte_data(tps->client, reg, val);
+}
+
+static int tps_65023_set_bits(struct tps_pmic *tps, u8 reg, u8 mask)
+{
+ int err, data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_65023_read(tps, reg);
+ if (data < 0) {
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+ err = data;
+ goto out;
+ }
+
+ data |= mask;
+ err = tps_65023_write(tps, reg, data);
+ if (err)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+out:
+ mutex_unlock(&tps->io_lock);
+ return err;
+}
+
+static int tps_65023_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask)
+{
+ int err, data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_65023_read(tps, reg);
+ if (data < 0) {
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+ err = data;
+ goto out;
+ }
+
+ data &= ~mask;
+
+ err = tps_65023_write(tps, reg, data);
+ if (err)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+out:
+ mutex_unlock(&tps->io_lock);
+ return err;
+
+}
+
+static int tps_65023_reg_read(struct tps_pmic *tps, u8 reg)
+{
+ int data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_65023_read(tps, reg);
+ if (data < 0)
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+
+ mutex_unlock(&tps->io_lock);
+ return data;
+}
+
+static int tps_65023_reg_write(struct tps_pmic *tps, u8 reg, u8 val)
+{
+ int err;
+
+ mutex_lock(&tps->io_lock);
+
+ err = tps_65023_write(tps, reg, val);
+ if (err < 0)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+ mutex_unlock(&tps->io_lock);
+ return err;
+}
+
+static int tps65023_dcdc_is_enabled(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS65023_NUM_REGULATOR - dcdc;
+ data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL);
+
+ if (data < 0)
+ return data;
+ else
+ return (data & 1<<shift) ? 1 : 0;
+}
+
+static int tps65023_ldo_is_enabled(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ shift = (ldo == TPS65023_LDO_1 ? 1 : 2);
+ data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL);
+
+ if (data < 0)
+ return data;
+ else
+ return (data & 1<<shift) ? 1 : 0;
+}
+
+static int tps65023_dcdc_enable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS65023_NUM_REGULATOR - dcdc;
+ return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
+}
+
+static int tps65023_dcdc_disable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS65023_NUM_REGULATOR - dcdc;
+ return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
+}
+
+static int tps65023_ldo_enable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ shift = (ldo == TPS65023_LDO_1 ? 1 : 2);
+ return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
+}
+
+static int tps65023_ldo_disable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ shift = (ldo == TPS65023_LDO_1 ? 1 : 2);
+ return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
+}
+
+static int tps65023_dcdc_get_voltage(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
+ return -EINVAL;
+
+ if (dcdc == TPS65023_DCDC_1) {
+ data = tps_65023_reg_read(tps, TPS65023_REG_DEF_CORE);
+ if (data < 0)
+ return data;
+ data &= (tps->info[dcdc]->table_len - 1);
+ return tps->info[dcdc]->table[data] * 1000;
+ } else
+ return tps->info[dcdc]->min_uV;
+}
+
+static int tps65023_dcdc_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+ int vsel;
+
+ if (dcdc != TPS65023_DCDC_1)
+ return -EINVAL;
+
+ if (min_uV < tps->info[dcdc]->min_uV
+ || min_uV > tps->info[dcdc]->max_uV)
+ return -EINVAL;
+ if (max_uV < tps->info[dcdc]->min_uV
+ || max_uV > tps->info[dcdc]->max_uV)
+ return -EINVAL;
+
+ for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
+ int mV = tps->info[dcdc]->table[vsel];
+ int uV = mV * 1000;
+
+ /* Break at the first in-range value */
+ if (min_uV <= uV && uV <= max_uV)
+ break;
+ }
+
+ /* write to the register in case we found a match */
+ if (vsel == tps->info[dcdc]->table_len)
+ return -EINVAL;
+ else
+ return tps_65023_reg_write(tps, TPS65023_REG_DEF_CORE, vsel);
+}
+
+static int tps65023_ldo_get_voltage(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL);
+ if (data < 0)
+ return data;
+
+ data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1));
+ data &= (tps->info[ldo]->table_len - 1);
+ return tps->info[ldo]->table[data] * 1000;
+}
+
+static int tps65023_ldo_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, vsel, ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
+ return -EINVAL;
+ if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
+ return -EINVAL;
+
+ for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
+ int mV = tps->info[ldo]->table[vsel];
+ int uV = mV * 1000;
+
+ /* Break at the first in-range value */
+ if (min_uV <= uV && uV <= max_uV)
+ break;
+ }
+
+ if (vsel == tps->info[ldo]->table_len)
+ return -EINVAL;
+
+ data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL);
+ if (data < 0)
+ return data;
+
+ data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1);
+ data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)));
+ return tps_65023_reg_write(tps, TPS65023_REG_LDO_CTRL, data);
+}
+
+static int tps65023_dcdc_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
+ return -EINVAL;
+
+ if (dcdc == TPS65023_DCDC_1) {
+ if (selector >= tps->info[dcdc]->table_len)
+ return -EINVAL;
+ else
+ return tps->info[dcdc]->table[selector] * 1000;
+ } else
+ return tps->info[dcdc]->min_uV;
+}
+
+static int tps65023_ldo_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ if (selector >= tps->info[ldo]->table_len)
+ return -EINVAL;
+ else
+ return tps->info[ldo]->table[selector] * 1000;
+}
+
+/* Operations permitted on VDCDCx */
+static struct regulator_ops tps65023_dcdc_ops = {
+ .is_enabled = tps65023_dcdc_is_enabled,
+ .enable = tps65023_dcdc_enable,
+ .disable = tps65023_dcdc_disable,
+ .get_voltage = tps65023_dcdc_get_voltage,
+ .set_voltage = tps65023_dcdc_set_voltage,
+ .list_voltage = tps65023_dcdc_list_voltage,
+};
+
+/* Operations permitted on LDOx */
+static struct regulator_ops tps65023_ldo_ops = {
+ .is_enabled = tps65023_ldo_is_enabled,
+ .enable = tps65023_ldo_enable,
+ .disable = tps65023_ldo_disable,
+ .get_voltage = tps65023_ldo_get_voltage,
+ .set_voltage = tps65023_ldo_set_voltage,
+ .list_voltage = tps65023_ldo_list_voltage,
+};
+
+static
+int tps_65023_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ static int desc_id;
+ const struct tps_info *info = (void *)id->driver_data;
+ struct regulator_init_data *init_data;
+ struct regulator_dev *rdev;
+ struct tps_pmic *tps;
+ int i;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
+
+ /**
+ * init_data points to array of regulator_init structures
+ * coming from the board-evm file.
+ */
+ init_data = client->dev.platform_data;
+
+ if (!init_data)
+ return -EIO;
+
+ tps = kzalloc(sizeof(*tps), GFP_KERNEL);
+ if (!tps)
+ return -ENOMEM;
+
+ mutex_init(&tps->io_lock);
+
+ /* common for all regulators */
+ tps->client = client;
+
+ for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) {
+ /* Store regulator specific information */
+ tps->info[i] = info;
+
+ tps->desc[i].name = info->name;
+ tps->desc[i].id = desc_id++;
+ tps->desc[i].n_voltages = num_voltages[i];
+ tps->desc[i].ops = (i > TPS65023_DCDC_3 ?
+ &tps65023_ldo_ops : &tps65023_dcdc_ops);
+ tps->desc[i].type = REGULATOR_VOLTAGE;
+ tps->desc[i].owner = THIS_MODULE;
+
+ /* Register the regulators */
+ rdev = regulator_register(&tps->desc[i], &client->dev,
+ init_data, tps);
+ if (IS_ERR(rdev)) {
+ dev_err(&client->dev, "failed to register %s\n",
+ id->name);
+
+ /* Unregister */
+ while (i)
+ regulator_unregister(tps->rdev[--i]);
+
+ tps->client = NULL;
+
+ /* clear the client data in i2c */
+ i2c_set_clientdata(client, NULL);
+ kfree(tps);
+ return PTR_ERR(rdev);
+ }
+
+ /* Save regulator for cleanup */
+ tps->rdev[i] = rdev;
+ }
+
+ i2c_set_clientdata(client, tps);
+
+ return 0;
+}
+
+/**
+ * tps_65023_remove - TPS65023 driver i2c remove handler
+ * @client: i2c driver client device structure
+ *
+ * Unregister TPS driver as an i2c client device driver
+ */
+static int __devexit tps_65023_remove(struct i2c_client *client)
+{
+ struct tps_pmic *tps = i2c_get_clientdata(client);
+ int i;
+
+ for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
+ regulator_unregister(tps->rdev[i]);
+
+ tps->client = NULL;
+
+ /* clear the client data in i2c */
+ i2c_set_clientdata(client, NULL);
+ kfree(tps);
+
+ return 0;
+}
+
+static const struct tps_info tps65023_regs[] = {
+ {
+ .name = "VDCDC1",
+ .min_uV = 800000,
+ .max_uV = 1600000,
+ .table_len = ARRAY_SIZE(VDCDC1_VSEL_table),
+ .table = VDCDC1_VSEL_table,
+ },
+ {
+ .name = "VDCDC2",
+ .min_uV = 3300000,
+ .max_uV = 3300000,
+ .fixed = 1,
+ },
+ {
+ .name = "VDCDC3",
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .fixed = 1,
+ },
+ {
+ .name = "LDO1",
+ .min_uV = 1000000,
+ .max_uV = 3150000,
+ .table_len = ARRAY_SIZE(LDO1_VSEL_table),
+ .table = LDO1_VSEL_table,
+ },
+ {
+ .name = "LDO2",
+ .min_uV = 1050000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(LDO2_VSEL_table),
+ .table = LDO2_VSEL_table,
+ },
+};
+
+static const struct i2c_device_id tps_65023_id[] = {
+ {.name = "tps65023",
+ .driver_data = (unsigned long) tps65023_regs,},
+ { },
+};
+
+MODULE_DEVICE_TABLE(i2c, tps_65023_id);
+
+static struct i2c_driver tps_65023_i2c_driver = {
+ .driver = {
+ .name = "tps65023",
+ .owner = THIS_MODULE,
+ },
+ .probe = tps_65023_probe,
+ .remove = __devexit_p(tps_65023_remove),
+ .id_table = tps_65023_id,
+};
+
+/**
+ * tps_65023_init
+ *
+ * Module init function
+ */
+static int __init tps_65023_init(void)
+{
+ return i2c_add_driver(&tps_65023_i2c_driver);
+}
+subsys_initcall(tps_65023_init);
+
+/**
+ * tps_65023_cleanup
+ *
+ * Module exit function
+ */
+static void __exit tps_65023_cleanup(void)
+{
+ i2c_del_driver(&tps_65023_i2c_driver);
+}
+module_exit(tps_65023_cleanup);
+
+MODULE_AUTHOR("Texas Instruments");
+MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/regulator/tps6507x-regulator.c b/drivers/regulator/tps6507x-regulator.c
new file mode 100644
index 0000000..f8a6dfb
--- /dev/null
+++ b/drivers/regulator/tps6507x-regulator.c
@@ -0,0 +1,714 @@
+/*
+ * tps6507x-regulator.c
+ *
+ * Regulator driver for TPS65073 PMIC
+ *
+ * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+
+/* Register definitions */
+#define TPS6507X_REG_PPATH1 0X01
+#define TPS6507X_REG_INT 0X02
+#define TPS6507X_REG_CHGCONFIG0 0X03
+#define TPS6507X_REG_CHGCONFIG1 0X04
+#define TPS6507X_REG_CHGCONFIG2 0X05
+#define TPS6507X_REG_CHGCONFIG3 0X06
+#define TPS6507X_REG_REG_ADCONFIG 0X07
+#define TPS6507X_REG_TSCMODE 0X08
+#define TPS6507X_REG_ADRESULT_1 0X09
+#define TPS6507X_REG_ADRESULT_2 0X0A
+#define TPS6507X_REG_PGOOD 0X0B
+#define TPS6507X_REG_PGOODMASK 0X0C
+#define TPS6507X_REG_CON_CTRL1 0X0D
+#define TPS6507X_REG_CON_CTRL2 0X0E
+#define TPS6507X_REG_CON_CTRL3 0X0F
+#define TPS6507X_REG_DEFDCDC1 0X10
+#define TPS6507X_REG_DEFDCDC2_LOW 0X11
+#define TPS6507X_REG_DEFDCDC2_HIGH 0X12
+#define TPS6507X_REG_DEFDCDC3_LOW 0X13
+#define TPS6507X_REG_DEFDCDC3_HIGH 0X14
+#define TPS6507X_REG_DEFSLEW 0X15
+#define TPS6507X_REG_LDO_CTRL1 0X16
+#define TPS6507X_REG_DEFLDO2 0X17
+#define TPS6507X_REG_WLED_CTRL1 0X18
+#define TPS6507X_REG_WLED_CTRL2 0X19
+
+/* CON_CTRL1 bitfields */
+#define TPS6507X_CON_CTRL1_DCDC1_ENABLE BIT(4)
+#define TPS6507X_CON_CTRL1_DCDC2_ENABLE BIT(3)
+#define TPS6507X_CON_CTRL1_DCDC3_ENABLE BIT(2)
+#define TPS6507X_CON_CTRL1_LDO1_ENABLE BIT(1)
+#define TPS6507X_CON_CTRL1_LDO2_ENABLE BIT(0)
+
+/* DEFDCDC1 bitfields */
+#define TPS6507X_DEFDCDC1_DCDC1_EXT_ADJ_EN BIT(7)
+#define TPS6507X_DEFDCDC1_DCDC1_MASK 0X3F
+
+/* DEFDCDC2_LOW bitfields */
+#define TPS6507X_DEFDCDC2_LOW_DCDC2_MASK 0X3F
+
+/* DEFDCDC2_HIGH bitfields */
+#define TPS6507X_DEFDCDC2_HIGH_DCDC2_MASK 0X3F
+
+/* DEFDCDC3_LOW bitfields */
+#define TPS6507X_DEFDCDC3_LOW_DCDC3_MASK 0X3F
+
+/* DEFDCDC3_HIGH bitfields */
+#define TPS6507X_DEFDCDC3_HIGH_DCDC3_MASK 0X3F
+
+/* TPS6507X_REG_LDO_CTRL1 bitfields */
+#define TPS6507X_REG_LDO_CTRL1_LDO1_MASK 0X0F
+
+/* TPS6507X_REG_DEFLDO2 bitfields */
+#define TPS6507X_REG_DEFLDO2_LDO2_MASK 0X3F
+
+/* VDCDC MASK */
+#define TPS6507X_DEFDCDCX_DCDC_MASK 0X3F
+
+/* DCDC's */
+#define TPS6507X_DCDC_1 0
+#define TPS6507X_DCDC_2 1
+#define TPS6507X_DCDC_3 2
+/* LDOs */
+#define TPS6507X_LDO_1 3
+#define TPS6507X_LDO_2 4
+
+#define TPS6507X_MAX_REG_ID TPS6507X_LDO_2
+
+/* Number of step-down converters available */
+#define TPS6507X_NUM_DCDC 3
+/* Number of LDO voltage regulators available */
+#define TPS6507X_NUM_LDO 2
+/* Number of total regulators available */
+#define TPS6507X_NUM_REGULATOR (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)
+
+/* Supported voltage values for regulators (in milliVolts) */
+static const u16 VDCDCx_VSEL_table[] = {
+ 725, 750, 775, 800,
+ 825, 850, 875, 900,
+ 925, 950, 975, 1000,
+ 1025, 1050, 1075, 1100,
+ 1125, 1150, 1175, 1200,
+ 1225, 1250, 1275, 1300,
+ 1325, 1350, 1375, 1400,
+ 1425, 1450, 1475, 1500,
+ 1550, 1600, 1650, 1700,
+ 1750, 1800, 1850, 1900,
+ 1950, 2000, 2050, 2100,
+ 2150, 2200, 2250, 2300,
+ 2350, 2400, 2450, 2500,
+ 2550, 2600, 2650, 2700,
+ 2750, 2800, 2850, 2900,
+ 3000, 3100, 3200, 3300,
+};
+
+static const u16 LDO1_VSEL_table[] = {
+ 1000, 1100, 1200, 1250,
+ 1300, 1350, 1400, 1500,
+ 1600, 1800, 2500, 2750,
+ 2800, 3000, 3100, 3300,
+};
+
+static const u16 LDO2_VSEL_table[] = {
+ 725, 750, 775, 800,
+ 825, 850, 875, 900,
+ 925, 950, 975, 1000,
+ 1025, 1050, 1075, 1100,
+ 1125, 1150, 1175, 1200,
+ 1225, 1250, 1275, 1300,
+ 1325, 1350, 1375, 1400,
+ 1425, 1450, 1475, 1500,
+ 1550, 1600, 1650, 1700,
+ 1750, 1800, 1850, 1900,
+ 1950, 2000, 2050, 2100,
+ 2150, 2200, 2250, 2300,
+ 2350, 2400, 2450, 2500,
+ 2550, 2600, 2650, 2700,
+ 2750, 2800, 2850, 2900,
+ 3000, 3100, 3200, 3300,
+};
+
+static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDCx_VSEL_table),
+ ARRAY_SIZE(VDCDCx_VSEL_table),
+ ARRAY_SIZE(VDCDCx_VSEL_table),
+ ARRAY_SIZE(LDO1_VSEL_table),
+ ARRAY_SIZE(LDO2_VSEL_table)};
+
+struct tps_info {
+ const char *name;
+ unsigned min_uV;
+ unsigned max_uV;
+ u8 table_len;
+ const u16 *table;
+};
+
+struct tps_pmic {
+ struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
+ struct i2c_client *client;
+ struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
+ const struct tps_info *info[TPS6507X_NUM_REGULATOR];
+ struct mutex io_lock;
+};
+
+static inline int tps_6507x_read(struct tps_pmic *tps, u8 reg)
+{
+ return i2c_smbus_read_byte_data(tps->client, reg);
+}
+
+static inline int tps_6507x_write(struct tps_pmic *tps, u8 reg, u8 val)
+{
+ return i2c_smbus_write_byte_data(tps->client, reg, val);
+}
+
+static int tps_6507x_set_bits(struct tps_pmic *tps, u8 reg, u8 mask)
+{
+ int err, data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_6507x_read(tps, reg);
+ if (data < 0) {
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+ err = data;
+ goto out;
+ }
+
+ data |= mask;
+ err = tps_6507x_write(tps, reg, data);
+ if (err)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+out:
+ mutex_unlock(&tps->io_lock);
+ return err;
+}
+
+static int tps_6507x_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask)
+{
+ int err, data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_6507x_read(tps, reg);
+ if (data < 0) {
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+ err = data;
+ goto out;
+ }
+
+ data &= ~mask;
+ err = tps_6507x_write(tps, reg, data);
+ if (err)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+out:
+ mutex_unlock(&tps->io_lock);
+ return err;
+}
+
+static int tps_6507x_reg_read(struct tps_pmic *tps, u8 reg)
+{
+ int data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_6507x_read(tps, reg);
+ if (data < 0)
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+
+ mutex_unlock(&tps->io_lock);
+ return data;
+}
+
+static int tps_6507x_reg_write(struct tps_pmic *tps, u8 reg, u8 val)
+{
+ int err;
+
+ mutex_lock(&tps->io_lock);
+
+ err = tps_6507x_write(tps, reg, val);
+ if (err < 0)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+ mutex_unlock(&tps->io_lock);
+ return err;
+}
+
+static int tps6507x_dcdc_is_enabled(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - dcdc;
+ data = tps_6507x_reg_read(tps, TPS6507X_REG_CON_CTRL1);
+
+ if (data < 0)
+ return data;
+ else
+ return (data & 1<<shift) ? 1 : 0;
+}
+
+static int tps6507x_ldo_is_enabled(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - ldo;
+ data = tps_6507x_reg_read(tps, TPS6507X_REG_CON_CTRL1);
+
+ if (data < 0)
+ return data;
+ else
+ return (data & 1<<shift) ? 1 : 0;
+}
+
+static int tps6507x_dcdc_enable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - dcdc;
+ return tps_6507x_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
+}
+
+static int tps6507x_dcdc_disable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - dcdc;
+ return tps_6507x_clear_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
+}
+
+static int tps6507x_ldo_enable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - ldo;
+ return tps_6507x_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
+}
+
+static int tps6507x_ldo_disable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - ldo;
+ return tps_6507x_clear_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
+}
+
+static int tps6507x_dcdc_get_voltage(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, dcdc = rdev_get_id(dev);
+ u8 reg;
+
+ switch (dcdc) {
+ case TPS6507X_DCDC_1:
+ reg = TPS6507X_REG_DEFDCDC1;
+ break;
+ case TPS6507X_DCDC_2:
+ reg = TPS6507X_REG_DEFDCDC2_LOW;
+ break;
+ case TPS6507X_DCDC_3:
+ reg = TPS6507X_REG_DEFDCDC3_LOW;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ data = tps_6507x_reg_read(tps, reg);
+ if (data < 0)
+ return data;
+
+ data &= TPS6507X_DEFDCDCX_DCDC_MASK;
+ return tps->info[dcdc]->table[data] * 1000;
+}
+
+static int tps6507x_dcdc_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, vsel, dcdc = rdev_get_id(dev);
+ u8 reg;
+
+ switch (dcdc) {
+ case TPS6507X_DCDC_1:
+ reg = TPS6507X_REG_DEFDCDC1;
+ break;
+ case TPS6507X_DCDC_2:
+ reg = TPS6507X_REG_DEFDCDC2_LOW;
+ break;
+ case TPS6507X_DCDC_3:
+ reg = TPS6507X_REG_DEFDCDC3_LOW;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (min_uV < tps->info[dcdc]->min_uV
+ || min_uV > tps->info[dcdc]->max_uV)
+ return -EINVAL;
+ if (max_uV < tps->info[dcdc]->min_uV
+ || max_uV > tps->info[dcdc]->max_uV)
+ return -EINVAL;
+
+ for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
+ int mV = tps->info[dcdc]->table[vsel];
+ int uV = mV * 1000;
+
+ /* Break at the first in-range value */
+ if (min_uV <= uV && uV <= max_uV)
+ break;
+ }
+
+ /* write to the register in case we found a match */
+ if (vsel == tps->info[dcdc]->table_len)
+ return -EINVAL;
+
+ data = tps_6507x_reg_read(tps, reg);
+ if (data < 0)
+ return data;
+
+ data &= ~TPS6507X_DEFDCDCX_DCDC_MASK;
+ data |= vsel;
+
+ return tps_6507x_reg_write(tps, reg, data);
+}
+
+static int tps6507x_ldo_get_voltage(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, ldo = rdev_get_id(dev);
+ u8 reg, mask;
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+ else {
+ reg = (ldo == TPS6507X_LDO_1 ?
+ TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
+ mask = (ldo == TPS6507X_LDO_1 ?
+ TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
+ TPS6507X_REG_DEFLDO2_LDO2_MASK);
+ }
+
+ data = tps_6507x_reg_read(tps, reg);
+ if (data < 0)
+ return data;
+
+ data &= mask;
+ return tps->info[ldo]->table[data] * 1000;
+}
+
+static int tps6507x_ldo_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, vsel, ldo = rdev_get_id(dev);
+ u8 reg, mask;
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+ else {
+ reg = (ldo == TPS6507X_LDO_1 ?
+ TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
+ mask = (ldo == TPS6507X_LDO_1 ?
+ TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
+ TPS6507X_REG_DEFLDO2_LDO2_MASK);
+ }
+
+ if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
+ return -EINVAL;
+ if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
+ return -EINVAL;
+
+ for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
+ int mV = tps->info[ldo]->table[vsel];
+ int uV = mV * 1000;
+
+ /* Break at the first in-range value */
+ if (min_uV <= uV && uV <= max_uV)
+ break;
+ }
+
+ if (vsel == tps->info[ldo]->table_len)
+ return -EINVAL;
+
+ data = tps_6507x_reg_read(tps, reg);
+ if (data < 0)
+ return data;
+
+ data &= ~mask;
+ data |= vsel;
+
+ return tps_6507x_reg_write(tps, reg, data);
+}
+
+static int tps6507x_dcdc_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
+ return -EINVAL;
+
+ if (selector >= tps->info[dcdc]->table_len)
+ return -EINVAL;
+ else
+ return tps->info[dcdc]->table[selector] * 1000;
+}
+
+static int tps6507x_ldo_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+
+ if (selector >= tps->info[ldo]->table_len)
+ return -EINVAL;
+ else
+ return tps->info[ldo]->table[selector] * 1000;
+}
+
+/* Operations permitted on VDCDCx */
+static struct regulator_ops tps6507x_dcdc_ops = {
+ .is_enabled = tps6507x_dcdc_is_enabled,
+ .enable = tps6507x_dcdc_enable,
+ .disable = tps6507x_dcdc_disable,
+ .get_voltage = tps6507x_dcdc_get_voltage,
+ .set_voltage = tps6507x_dcdc_set_voltage,
+ .list_voltage = tps6507x_dcdc_list_voltage,
+};
+
+/* Operations permitted on LDOx */
+static struct regulator_ops tps6507x_ldo_ops = {
+ .is_enabled = tps6507x_ldo_is_enabled,
+ .enable = tps6507x_ldo_enable,
+ .disable = tps6507x_ldo_disable,
+ .get_voltage = tps6507x_ldo_get_voltage,
+ .set_voltage = tps6507x_ldo_set_voltage,
+ .list_voltage = tps6507x_ldo_list_voltage,
+};
+
+static
+int tps_6507x_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ static int desc_id;
+ const struct tps_info *info = (void *)id->driver_data;
+ struct regulator_init_data *init_data;
+ struct regulator_dev *rdev;
+ struct tps_pmic *tps;
+ int i;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
+
+ /**
+ * init_data points to array of regulator_init structures
+ * coming from the board-evm file.
+ */
+ init_data = client->dev.platform_data;
+
+ if (!init_data)
+ return -EIO;
+
+ tps = kzalloc(sizeof(*tps), GFP_KERNEL);
+ if (!tps)
+ return -ENOMEM;
+
+ mutex_init(&tps->io_lock);
+
+ /* common for all regulators */
+ tps->client = client;
+
+ for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
+ /* Register the regulators */
+ tps->info[i] = info;
+ tps->desc[i].name = info->name;
+ tps->desc[i].id = desc_id++;
+ tps->desc[i].n_voltages = num_voltages[i];
+ tps->desc[i].ops = (i > TPS6507X_DCDC_3 ?
+ &tps6507x_ldo_ops : &tps6507x_dcdc_ops);
+ tps->desc[i].type = REGULATOR_VOLTAGE;
+ tps->desc[i].owner = THIS_MODULE;
+
+ rdev = regulator_register(&tps->desc[i],
+ &client->dev, init_data, tps);
+ if (IS_ERR(rdev)) {
+ dev_err(&client->dev, "failed to register %s\n",
+ id->name);
+
+ /* Unregister */
+ while (i)
+ regulator_unregister(tps->rdev[--i]);
+
+ tps->client = NULL;
+
+ /* clear the client data in i2c */
+ i2c_set_clientdata(client, NULL);
+
+ kfree(tps);
+ return PTR_ERR(rdev);
+ }
+
+ /* Save regulator for cleanup */
+ tps->rdev[i] = rdev;
+ }
+
+ i2c_set_clientdata(client, tps);
+
+ return 0;
+}
+
+/**
+ * tps_6507x_remove - TPS6507x driver i2c remove handler
+ * @client: i2c driver client device structure
+ *
+ * Unregister TPS driver as an i2c client device driver
+ */
+static int __devexit tps_6507x_remove(struct i2c_client *client)
+{
+ struct tps_pmic *tps = i2c_get_clientdata(client);
+ int i;
+
+ for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
+ regulator_unregister(tps->rdev[i]);
+
+ tps->client = NULL;
+
+ /* clear the client data in i2c */
+ i2c_set_clientdata(client, NULL);
+ kfree(tps);
+
+ return 0;
+}
+
+static const struct tps_info tps6507x_regs[] = {
+ {
+ .name = "VDCDC1",
+ .min_uV = 725000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
+ .table = VDCDCx_VSEL_table,
+ },
+ {
+ .name = "VDCDC2",
+ .min_uV = 725000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
+ .table = VDCDCx_VSEL_table,
+ },
+ {
+ .name = "VDCDC3",
+ .min_uV = 725000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
+ .table = VDCDCx_VSEL_table,
+ },
+ {
+ .name = "LDO1",
+ .min_uV = 1000000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(LDO1_VSEL_table),
+ .table = LDO1_VSEL_table,
+ },
+ {
+ .name = "LDO2",
+ .min_uV = 725000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(LDO2_VSEL_table),
+ .table = LDO2_VSEL_table,
+ },
+};
+
+static const struct i2c_device_id tps_6507x_id[] = {
+ {.name = "tps6507x",
+ .driver_data = (unsigned long) tps6507x_regs,},
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, tps_6507x_id);
+
+static struct i2c_driver tps_6507x_i2c_driver = {
+ .driver = {
+ .name = "tps6507x",
+ .owner = THIS_MODULE,
+ },
+ .probe = tps_6507x_probe,
+ .remove = __devexit_p(tps_6507x_remove),
+ .id_table = tps_6507x_id,
+};
+
+/**
+ * tps_6507x_init
+ *
+ * Module init function
+ */
+static int __init tps_6507x_init(void)
+{
+ return i2c_add_driver(&tps_6507x_i2c_driver);
+}
+subsys_initcall(tps_6507x_init);
+
+/**
+ * tps_6507x_cleanup
+ *
+ * Module exit function
+ */
+static void __exit tps_6507x_cleanup(void)
+{
+ i2c_del_driver(&tps_6507x_i2c_driver);
+}
+module_exit(tps_6507x_cleanup);
+
+MODULE_AUTHOR("Texas Instruments");
+MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/regulator/userspace-consumer.c b/drivers/regulator/userspace-consumer.c
index 06d2fa9..44917da 100644
--- a/drivers/regulator/userspace-consumer.c
+++ b/drivers/regulator/userspace-consumer.c
@@ -93,16 +93,21 @@
static DEVICE_ATTR(name, 0444, reg_show_name, NULL);
static DEVICE_ATTR(state, 0644, reg_show_state, reg_set_state);
-static struct device_attribute *attributes[] = {
- &dev_attr_name,
- &dev_attr_state,
+static struct attribute *attributes[] = {
+ &dev_attr_name.attr,
+ &dev_attr_state.attr,
+ NULL,
+};
+
+static const struct attribute_group attr_group = {
+ .attrs = attributes,
};
static int regulator_userspace_consumer_probe(struct platform_device *pdev)
{
struct regulator_userspace_consumer_data *pdata;
struct userspace_consumer_data *drvdata;
- int ret, i;
+ int ret;
pdata = pdev->dev.platform_data;
if (!pdata)
@@ -125,31 +130,29 @@
goto err_alloc_supplies;
}
- for (i = 0; i < ARRAY_SIZE(attributes); i++) {
- ret = device_create_file(&pdev->dev, attributes[i]);
- if (ret != 0)
- goto err_create_attrs;
- }
+ ret = sysfs_create_group(&pdev->dev.kobj, &attr_group);
+ if (ret != 0)
+ goto err_create_attrs;
- if (pdata->init_on)
+ if (pdata->init_on) {
ret = regulator_bulk_enable(drvdata->num_supplies,
drvdata->supplies);
-
- drvdata->enabled = pdata->init_on;
-
- if (ret) {
- dev_err(&pdev->dev, "Failed to set initial state: %d\n", ret);
- goto err_create_attrs;
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to set initial state: %d\n", ret);
+ goto err_enable;
+ }
}
+ drvdata->enabled = pdata->init_on;
platform_set_drvdata(pdev, drvdata);
return 0;
-err_create_attrs:
- for (i = 0; i < ARRAY_SIZE(attributes); i++)
- device_remove_file(&pdev->dev, attributes[i]);
+err_enable:
+ sysfs_remove_group(&pdev->dev.kobj, &attr_group);
+err_create_attrs:
regulator_bulk_free(drvdata->num_supplies, drvdata->supplies);
err_alloc_supplies:
@@ -160,10 +163,8 @@
static int regulator_userspace_consumer_remove(struct platform_device *pdev)
{
struct userspace_consumer_data *data = platform_get_drvdata(pdev);
- int i;
- for (i = 0; i < ARRAY_SIZE(attributes); i++)
- device_remove_file(&pdev->dev, attributes[i]);
+ sysfs_remove_group(&pdev->dev.kobj, &attr_group);
if (data->enabled)
regulator_bulk_disable(data->num_supplies, data->supplies);
diff --git a/drivers/regulator/virtual.c b/drivers/regulator/virtual.c
index e7db566..addc032 100644
--- a/drivers/regulator/virtual.c
+++ b/drivers/regulator/virtual.c
@@ -27,71 +27,81 @@
unsigned int mode;
};
-static void update_voltage_constraints(struct virtual_consumer_data *data)
+static void update_voltage_constraints(struct device *dev,
+ struct virtual_consumer_data *data)
{
int ret;
if (data->min_uV && data->max_uV
&& data->min_uV <= data->max_uV) {
+ dev_dbg(dev, "Requesting %d-%duV\n",
+ data->min_uV, data->max_uV);
ret = regulator_set_voltage(data->regulator,
- data->min_uV, data->max_uV);
+ data->min_uV, data->max_uV);
if (ret != 0) {
- printk(KERN_ERR "regulator_set_voltage() failed: %d\n",
- ret);
+ dev_err(dev,
+ "regulator_set_voltage() failed: %d\n", ret);
return;
}
}
if (data->min_uV && data->max_uV && !data->enabled) {
+ dev_dbg(dev, "Enabling regulator\n");
ret = regulator_enable(data->regulator);
if (ret == 0)
data->enabled = 1;
else
- printk(KERN_ERR "regulator_enable() failed: %d\n",
+ dev_err(dev, "regulator_enable() failed: %d\n",
ret);
}
if (!(data->min_uV && data->max_uV) && data->enabled) {
+ dev_dbg(dev, "Disabling regulator\n");
ret = regulator_disable(data->regulator);
if (ret == 0)
data->enabled = 0;
else
- printk(KERN_ERR "regulator_disable() failed: %d\n",
+ dev_err(dev, "regulator_disable() failed: %d\n",
ret);
}
}
-static void update_current_limit_constraints(struct virtual_consumer_data
- *data)
+static void update_current_limit_constraints(struct device *dev,
+ struct virtual_consumer_data *data)
{
int ret;
if (data->max_uA
&& data->min_uA <= data->max_uA) {
+ dev_dbg(dev, "Requesting %d-%duA\n",
+ data->min_uA, data->max_uA);
ret = regulator_set_current_limit(data->regulator,
data->min_uA, data->max_uA);
if (ret != 0) {
- pr_err("regulator_set_current_limit() failed: %d\n",
- ret);
+ dev_err(dev,
+ "regulator_set_current_limit() failed: %d\n",
+ ret);
return;
}
}
if (data->max_uA && !data->enabled) {
+ dev_dbg(dev, "Enabling regulator\n");
ret = regulator_enable(data->regulator);
if (ret == 0)
data->enabled = 1;
else
- printk(KERN_ERR "regulator_enable() failed: %d\n",
+ dev_err(dev, "regulator_enable() failed: %d\n",
ret);
}
if (!(data->min_uA && data->max_uA) && data->enabled) {
+ dev_dbg(dev, "Disabling regulator\n");
ret = regulator_disable(data->regulator);
if (ret == 0)
data->enabled = 0;
else
- printk(KERN_ERR "regulator_disable() failed: %d\n",
+ dev_err(dev, "regulator_disable() failed: %d\n",
ret);
}
}
@@ -115,7 +125,7 @@
mutex_lock(&data->lock);
data->min_uV = val;
- update_voltage_constraints(data);
+ update_voltage_constraints(dev, data);
mutex_unlock(&data->lock);
@@ -141,7 +151,7 @@
mutex_lock(&data->lock);
data->max_uV = val;
- update_voltage_constraints(data);
+ update_voltage_constraints(dev, data);
mutex_unlock(&data->lock);
@@ -167,7 +177,7 @@
mutex_lock(&data->lock);
data->min_uA = val;
- update_current_limit_constraints(data);
+ update_current_limit_constraints(dev, data);
mutex_unlock(&data->lock);
@@ -193,7 +203,7 @@
mutex_lock(&data->lock);
data->max_uA = val;
- update_current_limit_constraints(data);
+ update_current_limit_constraints(dev, data);
mutex_unlock(&data->lock);
@@ -276,8 +286,7 @@
drvdata = kzalloc(sizeof(struct virtual_consumer_data), GFP_KERNEL);
if (drvdata == NULL) {
- ret = -ENOMEM;
- goto err;
+ return -ENOMEM;
}
mutex_init(&drvdata->lock);
@@ -285,13 +294,18 @@
drvdata->regulator = regulator_get(&pdev->dev, reg_id);
if (IS_ERR(drvdata->regulator)) {
ret = PTR_ERR(drvdata->regulator);
+ dev_err(&pdev->dev, "Failed to obtain supply '%s': %d\n",
+ reg_id, ret);
goto err;
}
for (i = 0; i < ARRAY_SIZE(attributes); i++) {
ret = device_create_file(&pdev->dev, attributes[i]);
- if (ret != 0)
- goto err;
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to create attr %d: %d\n",
+ i, ret);
+ goto err_regulator;
+ }
}
drvdata->mode = regulator_get_mode(drvdata->regulator);
@@ -300,6 +314,8 @@
return 0;
+err_regulator:
+ regulator_put(drvdata->regulator);
err:
for (i = 0; i < ARRAY_SIZE(attributes); i++)
device_remove_file(&pdev->dev, attributes[i]);
diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c
index 17a00b0..768bd0e 100644
--- a/drivers/regulator/wm8350-regulator.c
+++ b/drivers/regulator/wm8350-regulator.c
@@ -1419,6 +1419,8 @@
{
struct platform_device *pdev;
int ret;
+ if (reg < 0 || reg >= NUM_WM8350_REGULATORS)
+ return -EINVAL;
if (wm8350->pmic.pdev[reg])
return -EBUSY;
diff --git a/include/linux/mfd/da903x.h b/include/linux/mfd/da903x.h
index 115dbe9..c63b65c 100644
--- a/include/linux/mfd/da903x.h
+++ b/include/linux/mfd/da903x.h
@@ -1,7 +1,7 @@
#ifndef __LINUX_PMIC_DA903X_H
#define __LINUX_PMIC_DA903X_H
-/* Unified sub device IDs for DA9030/DA9034 */
+/* Unified sub device IDs for DA9030/DA9034/DA9035 */
enum {
DA9030_ID_LED_1,
DA9030_ID_LED_2,
@@ -57,6 +57,8 @@
DA9034_ID_LDO13,
DA9034_ID_LDO14,
DA9034_ID_LDO15,
+
+ DA9035_ID_BUCK3,
};
/*
diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index 277f4b9..490c5b3 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -125,6 +125,8 @@
/* regulator get and put */
struct regulator *__must_check regulator_get(struct device *dev,
const char *id);
+struct regulator *__must_check regulator_get_exclusive(struct device *dev,
+ const char *id);
void regulator_put(struct regulator *regulator);
/* regulator output control and status */
@@ -144,6 +146,8 @@
int regulator_count_voltages(struct regulator *regulator);
int regulator_list_voltage(struct regulator *regulator, unsigned selector);
+int regulator_is_supported_voltage(struct regulator *regulator,
+ int min_uV, int max_uV);
int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV);
int regulator_get_voltage(struct regulator *regulator);
int regulator_set_current_limit(struct regulator *regulator,
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index ce1be70..31f2055 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -37,7 +37,8 @@
*
* @enable: Configure the regulator as enabled.
* @disable: Configure the regulator as disabled.
- * @is_enabled: Return 1 if the regulator is enabled, 0 otherwise.
+ * @is_enabled: Return 1 if the regulator is enabled, 0 if not.
+ * May also return negative errno.
*
* @set_voltage: Set the voltage for the regulator within the range specified.
* The driver should select the voltage closest to min_uV.
@@ -162,6 +163,8 @@
struct regulator_dev {
struct regulator_desc *desc;
int use_count;
+ int open_count;
+ int exclusive;
/* lists we belong to */
struct list_head list; /* list of all regulators */
diff --git a/include/linux/regulator/fixed.h b/include/linux/regulator/fixed.h
index 91b4da3..e94a4a1 100644
--- a/include/linux/regulator/fixed.h
+++ b/include/linux/regulator/fixed.h
@@ -5,6 +5,9 @@
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
+ * Copyright (c) 2009 Nokia Corporation
+ * Roger Quadros <ext-roger.quadros@nokia.com>
+ *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
@@ -16,9 +19,30 @@
struct regulator_init_data;
+/**
+ * struct fixed_voltage_config - fixed_voltage_config structure
+ * @supply_name: Name of the regulator supply
+ * @microvolts: Output voltage of regulator
+ * @gpio: GPIO to use for enable control
+ * set to -EINVAL if not used
+ * @enable_high: Polarity of enable GPIO
+ * 1 = Active high, 0 = Active low
+ * @enabled_at_boot: Whether regulator has been enabled at
+ * boot or not. 1 = Yes, 0 = No
+ * This is used to keep the regulator at
+ * the default state
+ * @init_data: regulator_init_data
+ *
+ * This structure contains fixed voltage regulator configuration
+ * information that must be passed by platform code to the fixed
+ * voltage regulator driver.
+ */
struct fixed_voltage_config {
const char *supply_name;
int microvolts;
+ int gpio;
+ unsigned enable_high:1;
+ unsigned enabled_at_boot:1;
struct regulator_init_data *init_data;
};
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index bac64fa..87f5f17 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -41,7 +41,7 @@
#define REGULATOR_CHANGE_DRMS 0x10
/**
- * struct regulator_state - regulator state during low power syatem states
+ * struct regulator_state - regulator state during low power system states
*
* This describes a regulators state during a system wide low power state.
*
@@ -117,25 +117,37 @@
/* mode to set on startup */
unsigned int initial_mode;
- /* constriant flags */
+ /* constraint 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 */
+ unsigned apply_uV:1; /* apply uV constraint if min == max */
};
/**
* struct regulator_consumer_supply - supply -> device mapping
*
- * This maps a supply name to a device.
+ * This maps a supply name to a device. Only one of dev or dev_name
+ * can be specified. Use of dev_name allows support for buses which
+ * make struct device available late such as I2C and is the preferred
+ * form.
*
* @dev: Device structure for the consumer.
+ * @dev_name: Result of dev_name() for the consumer.
* @supply: Name for the supply.
*/
struct regulator_consumer_supply {
struct device *dev; /* consumer */
+ const char *dev_name; /* dev_name() for consumer */
const char *supply; /* consumer supply - e.g. "vcc" */
};
+/* Initialize struct regulator_consumer_supply */
+#define REGULATOR_SUPPLY(_name, _dev_name) \
+{ \
+ .supply = _name, \
+ .dev_name = _dev_name, \
+}
+
/**
* struct regulator_init_data - regulator platform initialisation data.
*
@@ -166,6 +178,12 @@
int regulator_suspend_prepare(suspend_state_t state);
+#ifdef CONFIG_REGULATOR
void regulator_has_full_constraints(void);
+#else
+static inline void regulator_has_full_constraints(void)
+{
+}
+#endif
#endif
diff --git a/include/linux/regulator/max1586.h b/include/linux/regulator/max1586.h
index 4456319..de9a7fa 100644
--- a/include/linux/regulator/max1586.h
+++ b/include/linux/regulator/max1586.h
@@ -36,7 +36,7 @@
* max1586_subdev_data - regulator data
* @id: regulator Id (either MAX1586_V3 or MAX1586_V6)
* @name: regulator cute name (example for V3: "vcc_core")
- * @platform_data: regulator init data (contraints, supplies, ...)
+ * @platform_data: regulator init data (constraints, supplies, ...)
*/
struct max1586_subdev_data {
int id;
@@ -46,7 +46,7 @@
/**
* max1586_platform_data - platform data for max1586
- * @num_subdevs: number of regultors used (may be 1 or 2)
+ * @num_subdevs: number of regulators used (may be 1 or 2)
* @subdevs: regulator used
* At most, there will be a regulator for V3 and one for V6 voltages.
* @v3_gain: gain on the V3 voltage output multiplied by 1e6.