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-rw-r--r--Documentation/ABI/testing/sysfs-class-regulator57
-rw-r--r--MAINTAINERS2
-rw-r--r--drivers/mfd/twl4030-core.c2
-rw-r--r--drivers/mmc/core/core.c100
-rw-r--r--drivers/regulator/Kconfig13
-rw-r--r--drivers/regulator/Makefile1
-rw-r--r--drivers/regulator/bq24022.c3
-rw-r--r--drivers/regulator/core.c386
-rw-r--r--drivers/regulator/da903x.c3
-rw-r--r--drivers/regulator/fixed.c3
-rw-r--r--drivers/regulator/pcf50633-regulator.c3
-rw-r--r--drivers/regulator/twl4030-regulator.c500
-rw-r--r--drivers/regulator/virtual.c14
-rw-r--r--drivers/regulator/wm8350-regulator.c57
-rw-r--r--drivers/regulator/wm8400-regulator.c36
-rw-r--r--include/linux/i2c/twl4030.h47
-rw-r--r--include/linux/mmc/host.h5
-rw-r--r--include/linux/regulator/bq24022.h3
-rw-r--r--include/linux/regulator/consumer.h6
-rw-r--r--include/linux/regulator/driver.h81
-rw-r--r--include/linux/regulator/fixed.h3
-rw-r--r--include/linux/regulator/machine.h12
22 files changed, 1220 insertions, 117 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-regulator b/Documentation/ABI/testing/sysfs-class-regulator
index 873ef1f..e091fa8 100644
--- a/Documentation/ABI/testing/sysfs-class-regulator
+++ b/Documentation/ABI/testing/sysfs-class-regulator
@@ -4,8 +4,8 @@ KernelVersion: 2.6.26
Contact: Liam Girdwood <lrg@slimlogic.co.uk>
Description:
Some regulator directories will contain a field called
- state. This reports the regulator enable status, for
- regulators which can report that value.
+ state. This reports the regulator enable control, for
+ regulators which can report that input value.
This will be one of the following strings:
@@ -14,16 +14,54 @@ Description:
'unknown'
'enabled' means the regulator output is ON and is supplying
- power to the system.
+ power to the system (assuming no error prevents it).
'disabled' means the regulator output is OFF and is not
- supplying power to the system..
+ supplying power to the system (unless some non-Linux
+ control has enabled it).
'unknown' means software cannot determine the state, or
the reported state is invalid.
NOTE: this field can be used in conjunction with microvolts
- and microamps to determine regulator output levels.
+ or microamps to determine configured regulator output levels.
+
+
+What: /sys/class/regulator/.../status
+Description:
+ Some regulator directories will contain a field called
+ "status". This reports the current regulator status, for
+ regulators which can report that output value.
+
+ This will be one of the following strings:
+
+ off
+ on
+ error
+ fast
+ normal
+ idle
+ standby
+
+ "off" means the regulator is not supplying power to the
+ system.
+
+ "on" means the regulator is supplying power to the system,
+ and the regulator can't report a detailed operation mode.
+
+ "error" indicates an out-of-regulation status such as being
+ disabled due to thermal shutdown, or voltage being unstable
+ because of problems with the input power supply.
+
+ "fast", "normal", "idle", and "standby" are all detailed
+ regulator operation modes (described elsewhere). They
+ imply "on", but provide more detail.
+
+ Note that regulator status is a function of many inputs,
+ not limited to control inputs from Linux. For example,
+ the actual load presented may trigger "error" status; or
+ a regulator may be enabled by another user, even though
+ Linux did not enable it.
What: /sys/class/regulator/.../type
@@ -58,7 +96,7 @@ Description:
Some regulator directories will contain a field called
microvolts. This holds the regulator output voltage setting
measured in microvolts (i.e. E-6 Volts), for regulators
- which can report that voltage.
+ which can report the control input for voltage.
NOTE: This value should not be used to determine the regulator
output voltage level as this value is the same regardless of
@@ -73,7 +111,7 @@ Description:
Some regulator directories will contain a field called
microamps. This holds the regulator output current limit
setting measured in microamps (i.e. E-6 Amps), for regulators
- which can report that current.
+ which can report the control input for a current limit.
NOTE: This value should not be used to determine the regulator
output current level as this value is the same regardless of
@@ -87,7 +125,7 @@ Contact: Liam Girdwood <lrg@slimlogic.co.uk>
Description:
Some regulator directories will contain a field called
opmode. This holds the current regulator operating mode,
- for regulators which can report it.
+ for regulators which can report that control input value.
The opmode value can be one of the following strings:
@@ -101,7 +139,8 @@ Description:
NOTE: This value should not be used to determine the regulator
output operating mode as this value is the same regardless of
- whether the regulator is enabled or disabled.
+ whether the regulator is enabled or disabled. A "status"
+ attribute may be available to determine the actual mode.
What: /sys/class/regulator/.../min_microvolts
diff --git a/MAINTAINERS b/MAINTAINERS
index 9082266..6fe6f39 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4847,7 +4847,7 @@ M: lrg@slimlogic.co.uk
P: Mark Brown
M: broonie@opensource.wolfsonmicro.com
W: http://opensource.wolfsonmicro.com/node/15
-W: http://www.slimlogic.co.uk/?page_id=5
+W: http://www.slimlogic.co.uk/?p=48
T: git kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6.git
S: Supported
diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c
index 68826f1..ec90e95 100644
--- a/drivers/mfd/twl4030-core.c
+++ b/drivers/mfd/twl4030-core.c
@@ -592,11 +592,9 @@ add_children(struct twl4030_platform_data *pdata, unsigned long features)
/* maybe add LDOs that are omitted on cost-reduced parts */
if (twl_has_regulator() && !(features & TPS_SUBSET)) {
- /*
child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2);
if (IS_ERR(child))
return PTR_ERR(child);
- */
child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2);
if (IS_ERR(child))
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index df6ce4a..1445ea8 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -21,6 +21,7 @@
#include <linux/leds.h>
#include <linux/scatterlist.h>
#include <linux/log2.h>
+#include <linux/regulator/consumer.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
@@ -523,6 +524,105 @@ u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max)
}
EXPORT_SYMBOL(mmc_vddrange_to_ocrmask);
+#ifdef CONFIG_REGULATOR
+
+/**
+ * mmc_regulator_get_ocrmask - return mask of supported voltages
+ * @supply: regulator to use
+ *
+ * This returns either a negative errno, or a mask of voltages that
+ * can be provided to MMC/SD/SDIO devices using the specified voltage
+ * regulator. This would normally be called before registering the
+ * MMC host adapter.
+ */
+int mmc_regulator_get_ocrmask(struct regulator *supply)
+{
+ int result = 0;
+ int count;
+ int i;
+
+ count = regulator_count_voltages(supply);
+ if (count < 0)
+ return count;
+
+ for (i = 0; i < count; i++) {
+ int vdd_uV;
+ int vdd_mV;
+
+ vdd_uV = regulator_list_voltage(supply, i);
+ if (vdd_uV <= 0)
+ continue;
+
+ vdd_mV = vdd_uV / 1000;
+ result |= mmc_vddrange_to_ocrmask(vdd_mV, vdd_mV);
+ }
+
+ return result;
+}
+EXPORT_SYMBOL(mmc_regulator_get_ocrmask);
+
+/**
+ * mmc_regulator_set_ocr - set regulator to match host->ios voltage
+ * @vdd_bit: zero for power off, else a bit number (host->ios.vdd)
+ * @supply: regulator to use
+ *
+ * Returns zero on success, else negative errno.
+ *
+ * MMC host drivers may use this to enable or disable a regulator using
+ * a particular supply voltage. This would normally be called from the
+ * set_ios() method.
+ */
+int mmc_regulator_set_ocr(struct regulator *supply, unsigned short vdd_bit)
+{
+ int result = 0;
+ int min_uV, max_uV;
+ int enabled;
+
+ enabled = regulator_is_enabled(supply);
+ if (enabled < 0)
+ return enabled;
+
+ if (vdd_bit) {
+ int tmp;
+ int voltage;
+
+ /* REVISIT mmc_vddrange_to_ocrmask() may have set some
+ * bits this regulator doesn't quite support ... don't
+ * be too picky, most cards and regulators are OK with
+ * a 0.1V range goof (it's a small error percentage).
+ */
+ tmp = vdd_bit - ilog2(MMC_VDD_165_195);
+ if (tmp == 0) {
+ min_uV = 1650 * 1000;
+ max_uV = 1950 * 1000;
+ } else {
+ min_uV = 1900 * 1000 + tmp * 100 * 1000;
+ max_uV = min_uV + 100 * 1000;
+ }
+
+ /* avoid needless changes to this voltage; the regulator
+ * might not allow this operation
+ */
+ voltage = regulator_get_voltage(supply);
+ if (voltage < 0)
+ result = voltage;
+ else if (voltage < min_uV || voltage > max_uV)
+ result = regulator_set_voltage(supply, min_uV, max_uV);
+ else
+ result = 0;
+
+ if (result == 0 && !enabled)
+ result = regulator_enable(supply);
+ } else if (enabled) {
+ result = regulator_disable(supply);
+ }
+
+ return result;
+}
+EXPORT_SYMBOL(mmc_regulator_set_ocr);
+
+#endif
+
/*
* Mask off any voltages we don't support and select
* the lowest voltage
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index e7e0cf1..e58c0ce 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -29,8 +29,12 @@ config REGULATOR_DEBUG
Say yes here to enable debugging support.
config REGULATOR_FIXED_VOLTAGE
- tristate
+ 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
+ managed regulators and simple non-configurable regulators.
config REGULATOR_VIRTUAL_CONSUMER
tristate "Virtual regulator consumer support"
@@ -52,6 +56,13 @@ config REGULATOR_BQ24022
charging select between 100 mA and 500 mA charging current
limit.
+config REGULATOR_TWL4030
+ bool "TI TWL4030/TWL5030/TPS695x0 PMIC"
+ depends on TWL4030_CORE
+ help
+ This driver supports the voltage regulators provided by
+ this family of companion chips.
+
config REGULATOR_WM8350
tristate "Wolfson Microelectroncis WM8350 AudioPlus PMIC"
depends on MFD_WM8350
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 61b30c6..bac133a 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_REGULATOR_FIXED_VOLTAGE) += fixed.o
obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o
obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o
+obj-$(CONFIG_REGULATOR_TWL4030) += twl4030-regulator.o
obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o
obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
diff --git a/drivers/regulator/bq24022.c b/drivers/regulator/bq24022.c
index c175e38..7ecb820 100644
--- a/drivers/regulator/bq24022.c
+++ b/drivers/regulator/bq24022.c
@@ -105,7 +105,8 @@ static int __init bq24022_probe(struct platform_device *pdev)
ret = gpio_direction_output(pdata->gpio_iset2, 0);
ret = gpio_direction_output(pdata->gpio_nce, 1);
- bq24022 = regulator_register(&bq24022_desc, &pdev->dev, pdata);
+ bq24022 = regulator_register(&bq24022_desc, &pdev->dev,
+ pdata->init_data, pdata);
if (IS_ERR(bq24022)) {
dev_dbg(&pdev->dev, "couldn't register regulator\n");
ret = PTR_ERR(bq24022);
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index f511a40..01f7702 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -28,33 +28,7 @@
static DEFINE_MUTEX(regulator_list_mutex);
static LIST_HEAD(regulator_list);
static LIST_HEAD(regulator_map_list);
-
-/*
- * struct regulator_dev
- *
- * Voltage / Current regulator class device. One for each regulator.
- */
-struct regulator_dev {
- struct regulator_desc *desc;
- int use_count;
-
- /* lists we belong to */
- struct list_head list; /* list of all regulators */
- struct list_head slist; /* list of supplied regulators */
-
- /* lists we own */
- struct list_head consumer_list; /* consumers we supply */
- struct list_head supply_list; /* regulators we supply */
-
- struct blocking_notifier_head notifier;
- struct mutex mutex; /* consumer lock */
- struct module *owner;
- struct device dev;
- struct regulation_constraints *constraints;
- struct regulator_dev *supply; /* for tree */
-
- void *reg_data; /* regulator_dev data */
-};
+static int has_full_constraints;
/*
* struct regulator_map
@@ -79,7 +53,6 @@ struct regulator {
int uA_load;
int min_uV;
int max_uV;
- int enabled; /* count of client enables */
char *supply_name;
struct device_attribute dev_attr;
struct regulator_dev *rdev;
@@ -312,6 +285,47 @@ static ssize_t regulator_state_show(struct device *dev,
}
static DEVICE_ATTR(state, 0444, regulator_state_show, NULL);
+static ssize_t regulator_status_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct regulator_dev *rdev = dev_get_drvdata(dev);
+ int status;
+ char *label;
+
+ status = rdev->desc->ops->get_status(rdev);
+ if (status < 0)
+ return status;
+
+ switch (status) {
+ case REGULATOR_STATUS_OFF:
+ label = "off";
+ break;
+ case REGULATOR_STATUS_ON:
+ label = "on";
+ break;
+ case REGULATOR_STATUS_ERROR:
+ label = "error";
+ break;
+ case REGULATOR_STATUS_FAST:
+ label = "fast";
+ break;
+ case REGULATOR_STATUS_NORMAL:
+ label = "normal";
+ break;
+ case REGULATOR_STATUS_IDLE:
+ label = "idle";
+ break;
+ case REGULATOR_STATUS_STANDBY:
+ label = "standby";
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ return sprintf(buf, "%s\n", label);
+}
+static DEVICE_ATTR(status, 0444, regulator_status_show, NULL);
+
static ssize_t regulator_min_uA_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -678,6 +692,73 @@ static int set_machine_constraints(struct regulator_dev *rdev,
else
name = "regulator";
+ /* constrain machine-level voltage specs to fit
+ * the actual range supported by this regulator.
+ */
+ if (ops->list_voltage && rdev->desc->n_voltages) {
+ int count = rdev->desc->n_voltages;
+ int i;
+ int min_uV = INT_MAX;
+ int max_uV = INT_MIN;
+ int cmin = constraints->min_uV;
+ int cmax = constraints->max_uV;
+
+ /* it's safe to autoconfigure fixed-voltage supplies */
+ if (count == 1 && !cmin) {
+ cmin = INT_MIN;
+ cmax = INT_MAX;
+ }
+
+ /* voltage constraints are optional */
+ if ((cmin == 0) && (cmax == 0))
+ goto out;
+
+ /* else require explicit machine-level constraints */
+ if (cmin <= 0 || cmax <= 0 || cmax < cmin) {
+ pr_err("%s: %s '%s' voltage constraints\n",
+ __func__, "invalid", name);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* initial: [cmin..cmax] valid, [min_uV..max_uV] not */
+ for (i = 0; i < count; i++) {
+ int value;
+
+ value = ops->list_voltage(rdev, i);
+ if (value <= 0)
+ continue;
+
+ /* maybe adjust [min_uV..max_uV] */
+ if (value >= cmin && value < min_uV)
+ min_uV = value;
+ if (value <= cmax && value > max_uV)
+ max_uV = value;
+ }
+
+ /* final: [min_uV..max_uV] valid iff constraints valid */
+ if (max_uV < min_uV) {
+ pr_err("%s: %s '%s' voltage constraints\n",
+ __func__, "unsupportable", name);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* use regulator's subset of machine constraints */
+ if (constraints->min_uV < min_uV) {
+ pr_debug("%s: override '%s' %s, %d -> %d\n",
+ __func__, name, "min_uV",
+ constraints->min_uV, min_uV);
+ constraints->min_uV = min_uV;
+ }
+ if (constraints->max_uV > max_uV) {
+ pr_debug("%s: override '%s' %s, %d -> %d\n",
+ __func__, name, "max_uV",
+ constraints->max_uV, max_uV);
+ constraints->max_uV = max_uV;
+ }
+ }
+
rdev->constraints = constraints;
/* do we need to apply the constraint voltage */
@@ -695,10 +776,6 @@ static int set_machine_constraints(struct regulator_dev *rdev,
}
}
- /* are we enabled at boot time by firmware / bootloader */
- if (rdev->constraints->boot_on)
- rdev->use_count = 1;
-
/* do we need to setup our suspend state */
if (constraints->initial_state) {
ret = suspend_prepare(rdev, constraints->initial_state);
@@ -710,11 +787,27 @@ static int set_machine_constraints(struct regulator_dev *rdev,
}
}
- /* if always_on is set then turn the regulator on if it's not
- * already on. */
- if (constraints->always_on && ops->enable &&
- ((ops->is_enabled && !ops->is_enabled(rdev)) ||
- (!ops->is_enabled && !constraints->boot_on))) {
+ if (constraints->initial_mode) {
+ if (!ops->set_mode) {
+ printk(KERN_ERR "%s: no set_mode operation for %s\n",
+ __func__, name);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = ops->set_mode(rdev, constraints->initial_mode);
+ if (ret < 0) {
+ printk(KERN_ERR
+ "%s: failed to set initial mode for %s: %d\n",
+ __func__, name, ret);
+ goto out;
+ }
+ }
+
+ /* If the constraints say the regulator should be on at this point
+ * and we have control then make sure it is enabled.
+ */
+ if ((constraints->always_on || constraints->boot_on) && ops->enable) {
ret = ops->enable(rdev);
if (ret < 0) {
printk(KERN_ERR "%s: failed to enable %s\n",
@@ -817,6 +910,19 @@ static void unset_consumer_device_supply(struct regulator_dev *rdev,
}
}
+static void unset_regulator_supplies(struct regulator_dev *rdev)
+{
+ struct regulator_map *node, *n;
+
+ list_for_each_entry_safe(node, n, &regulator_map_list, list) {
+ if (rdev == node->regulator) {
+ list_del(&node->list);
+ kfree(node);
+ return;
+ }
+ }
+}
+
#define REG_STR_SIZE 32
static struct regulator *create_regulator(struct regulator_dev *rdev,
@@ -898,9 +1004,12 @@ overflow_err:
* @id: Supply name or regulator ID.
*
* Returns a struct regulator corresponding to the regulator producer,
- * or IS_ERR() condition containing errno. Use of supply names
- * configured via regulator_set_device_supply() is strongly
- * encouraged.
+ * or IS_ERR() condition containing errno.
+ *
+ * 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(struct device *dev, const char *id)
{
@@ -922,8 +1031,6 @@ struct regulator *regulator_get(struct device *dev, const char *id)
goto found;
}
}
- printk(KERN_ERR "regulator: Unable to get requested regulator: %s\n",
- id);
mutex_unlock(&regulator_list_mutex);
return regulator;
@@ -961,10 +1068,6 @@ void regulator_put(struct regulator *regulator)
mutex_lock(&regulator_list_mutex);
rdev = regulator->rdev;
- if (WARN(regulator->enabled, "Releasing supply %s while enabled\n",
- regulator->supply_name))
- _regulator_disable(rdev);
-
/* remove any sysfs entries */
if (regulator->dev) {
sysfs_remove_link(&rdev->dev.kobj, regulator->supply_name);
@@ -1039,12 +1142,7 @@ int regulator_enable(struct regulator *regulator)
int ret = 0;
mutex_lock(&rdev->mutex);
- if (regulator->enabled == 0)
- ret = _regulator_enable(rdev);
- else if (regulator->enabled < 0)
- ret = -EIO;
- if (ret == 0)
- regulator->enabled++;
+ ret = _regulator_enable(rdev);
mutex_unlock(&rdev->mutex);
return ret;
}
@@ -1055,6 +1153,11 @@ static int _regulator_disable(struct regulator_dev *rdev)
{
int ret = 0;
+ if (WARN(rdev->use_count <= 0,
+ "unbalanced disables for %s\n",
+ rdev->desc->name))
+ return -EIO;
+
/* are we the last user and permitted to disable ? */
if (rdev->use_count == 1 && !rdev->constraints->always_on) {
@@ -1103,16 +1206,7 @@ int regulator_disable(struct regulator *regulator)
int ret = 0;
mutex_lock(&rdev->mutex);
- if (regulator->enabled == 1) {
- ret = _regulator_disable(rdev);
- if (ret == 0)
- regulator->uA_load = 0;
- } else if (WARN(regulator->enabled <= 0,
- "unbalanced disables for supply %s\n",
- regulator->supply_name))
- ret = -EIO;
- if (ret == 0)
- regulator->enabled--;
+ ret = _regulator_disable(rdev);
mutex_unlock(&rdev->mutex);
return ret;
}
@@ -1159,7 +1253,6 @@ int regulator_force_disable(struct regulator *regulator)
int ret;
mutex_lock(&regulator->rdev->mutex);
- regulator->enabled = 0;
regulator->uA_load = 0;
ret = _regulator_force_disable(regulator->rdev);
mutex_unlock(&regulator->rdev->mutex);
@@ -1204,6 +1297,56 @@ int regulator_is_enabled(struct regulator *regulator)
EXPORT_SYMBOL_GPL(regulator_is_enabled);
/**
+ * regulator_count_voltages - count regulator_list_voltage() selectors
+ * @regulator: regulator source
+ *
+ * Returns number of selectors, or negative errno. Selectors are
+ * numbered starting at zero, and typically correspond to bitfields
+ * in hardware registers.
+ */
+int regulator_count_voltages(struct regulator *regulator)
+{
+ struct regulator_dev *rdev = regulator->rdev;
+
+ return rdev->desc->n_voltages ? : -EINVAL;
+}
+EXPORT_SYMBOL_GPL(regulator_count_voltages);
+
+/**
+ * regulator_list_voltage - enumerate supported voltages
+ * @regulator: regulator source
+ * @selector: identify voltage to list
+ * Context: can sleep
+ *
+ * Returns a voltage that can be passed to @regulator_set_voltage(),
+ * zero if this selector code can't be used on this sytem, or a
+ * negative errno.
+ */
+int regulator_list_voltage(struct regulator *regulator, unsigned selector)
+{
+ struct regulator_dev *rdev = regulator->rdev;
+ struct regulator_ops *ops = rdev->desc->ops;
+ int ret;
+
+ if (!ops->list_voltage || selector >= rdev->desc->n_voltages)
+ return -EINVAL;
+
+ mutex_lock(&rdev->mutex);
+ ret = ops->list_voltage(rdev, selector);
+ mutex_unlock(&rdev->mutex);
+
+ if (ret > 0) {
+ if (ret < rdev->constraints->min_uV)
+ ret = 0;
+ else if (ret > rdev->constraints->max_uV)
+ ret = 0;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(regulator_list_voltage);
+
+/**
* regulator_set_voltage - set regulator output voltage
* @regulator: regulator source
* @min_uV: Minimum required voltage in uV
@@ -1243,6 +1386,7 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV)
ret = rdev->desc->ops->set_voltage(rdev, min_uV, max_uV);
out:
+ _notifier_call_chain(rdev, REGULATOR_EVENT_VOLTAGE_CHANGE, NULL);
mutex_unlock(&rdev->mutex);
return ret;
}
@@ -1543,20 +1687,23 @@ int regulator_unregister_notifier(struct regulator *regulator,
}
EXPORT_SYMBOL_GPL(regulator_unregister_notifier);
-/* notify regulator consumers and downstream regulator consumers */
+/* notify regulator consumers and downstream regulator consumers.
+ * Note mutex must be held by caller.
+ */
static void _notifier_call_chain(struct regulator_dev *rdev,
unsigned long event, void *data)
{
struct regulator_dev *_rdev;
/* call rdev chain first */
- mutex_lock(&rdev->mutex);
blocking_notifier_call_chain(&rdev->notifier, event, NULL);
- mutex_unlock(&rdev->mutex);
/* now notify regulator we supply */
- list_for_each_entry(_rdev, &rdev->supply_list, slist)
- _notifier_call_chain(_rdev, event, data);
+ list_for_each_entry(_rdev, &rdev->supply_list, slist) {
+ mutex_lock(&_rdev->mutex);
+ _notifier_call_chain(_rdev, event, data);
+ mutex_unlock(&_rdev->mutex);
+ }
}
/**
@@ -1703,6 +1850,7 @@ EXPORT_SYMBOL_GPL(regulator_bulk_free);
*
* Called by regulator drivers to notify clients a regulator event has
* occurred. We also notify regulator clients downstream.
+ * Note lock must be held by caller.
*/
int regulator_notifier_call_chain(struct regulator_dev *rdev,
unsigned long event, void *data)
@@ -1744,6 +1892,11 @@ static int add_regulator_attributes(struct regulator_dev *rdev)
if (status < 0)
return status;
}
+ if (ops->get_status) {
+ status = device_create_file(dev, &dev_attr_status);
+ if (status < 0)
+ return status;
+ }
/* some attributes are type-specific */
if (rdev->desc->type == REGULATOR_CURRENT) {
@@ -1828,17 +1981,18 @@ static int add_regulator_attributes(struct regulator_dev *rdev)
* regulator_register - register regulator
* @regulator_desc: regulator to register
* @dev: struct device for the regulator
+ * @init_data: platform provided init data, passed through by driver
* @driver_data: private regulator data
*
* Called by regulator drivers to register a regulator.
* Returns 0 on success.
*/
struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
- struct device *dev, void *driver_data)
+ struct device *dev, struct regulator_init_data *init_data,
+ void *driver_data)
{
static atomic_t regulator_no = ATOMIC_INIT(0);
struct regulator_dev *rdev;
- struct regulator_init_data *init_data = dev->platform_data;
int ret, i;
if (regulator_desc == NULL)
@@ -1945,6 +2099,7 @@ void regulator_unregister(struct regulator_dev *rdev)
return;
mutex_lock(&regulator_list_mutex);
+ unset_regulator_supplies(rdev);
list_del(&rdev->list);
if (rdev->supply)
sysfs_remove_link(&rdev->dev.kobj, "supply");
@@ -1989,6 +2144,23 @@ out:
EXPORT_SYMBOL_GPL(regulator_suspend_prepare);
/**
+ * regulator_has_full_constraints - the system has fully specified constraints
+ *
+ * Calling this function will cause the regulator API to disable all
+ * regulators which have a zero use count and don't have an always_on
+ * constraint in a late_initcall.
+ *
+ * The intention is that this will become the default behaviour in a
+ * future kernel release so users are encouraged to use this facility
+ * now.
+ */
+void regulator_has_full_constraints(void)
+{
+ has_full_constraints = 1;
+}
+EXPORT_SYMBOL_GPL(regulator_has_full_constraints);
+
+/**
* rdev_get_drvdata - get rdev regulator driver data
* @rdev: regulator
*
@@ -2055,3 +2227,77 @@ static int __init regulator_init(void)
/* init early to allow our consumers to complete system booting */
core_initcall(regulator_init);
+
+static int __init regulator_init_complete(void)
+{
+ struct regulator_dev *rdev;
+ struct regulator_ops *ops;
+ struct regulation_constraints *c;
+ int enabled, ret;
+ const char *name;
+
+ mutex_lock(&regulator_list_mutex);
+
+ /* If we have a full configuration then disable any regulators
+ * which are not in use or always_on. This will become the
+ * default behaviour in the future.
+ */
+ list_for_each_entry(rdev, &regulator_list, list) {
+ ops = rdev->desc->ops;
+ c = rdev->constraints;
+
+ if (c->name)
+ name = c->name;
+ else if (rdev->desc->name)
+ name = rdev->desc->name;
+ else
+ name = "regulator";
+
+ if (!ops->disable || c->always_on)
+ continue;
+
+ mutex_lock(&rdev->mutex);
+
+ if (rdev->use_count)
+ goto unlock;
+
+ /* If we can't read the status assume it's on. */
+ if (ops->is_enabled)
+ enabled = ops->is_enabled(rdev);
+ else
+ enabled = 1;
+
+ if (!enabled)
+ goto unlock;
+
+ if (has_full_constraints) {
+ /* We log since this may kill the system if it
+ * goes wrong. */
+ printk(KERN_INFO "%s: disabling %s\n",
+ __func__, name);
+ ret = ops->disable(rdev);
+ if (ret != 0) {
+ printk(KERN_ERR
+ "%s: couldn't disable %s: %d\n",
+ __func__, name, ret);
+ }
+ } else {
+ /* The intention is that in future we will
+ * assume that full constraints are provided
+ * so warn even if we aren't going to do
+ * anything here.
+ */
+ printk(KERN_WARNING
+ "%s: incomplete constraints, leaving %s on\n",
+ __func__, name);
+ }
+
+unlock:
+ mutex_unlock(&rdev->mutex);
+ }
+
+ mutex_unlock(&regulator_list_mutex);
+
+ return 0;
+}
+late_initcall(regulator_init_complete);
diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c
index fe77730..72b1549 100644
--- a/drivers/regulator/da903x.c
+++ b/drivers/regulator/da903x.c
@@ -471,7 +471,8 @@ static int __devinit da903x_regulator_probe(struct platform_device *pdev)
if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15)
ri->desc.ops = &da9030_regulator_ldo1_15_ops;
- rdev = regulator_register(&ri->desc, &pdev->dev, ri);
+ rdev = regulator_register(&ri->desc, &pdev->dev,
+ pdev->dev.platform_data, ri);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register regulator %s\n",
ri->desc.name);
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index d31db3e..23d5546 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -73,7 +73,8 @@ static int regulator_fixed_voltage_probe(struct platform_device *pdev)
drvdata->microvolts = config->microvolts;
- drvdata->dev = regulator_register(&drvdata->desc, drvdata);
+ 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;
diff --git a/drivers/regulator/pcf50633-regulator.c b/drivers/regulator/pcf50633-regulator.c
index 4cc85ec..cd761d8 100644
--- a/drivers/regulator/pcf50633-regulator.c
+++ b/drivers/regulator/pcf50633-regulator.c
@@ -284,7 +284,8 @@ static int __devinit pcf50633_regulator_probe(struct platform_device *pdev)
/* Already set by core driver */
pcf = platform_get_drvdata(pdev);
- rdev = regulator_register(&regulators[pdev->id], &pdev->dev, pcf);
+ rdev = regulator_register(&regulators[pdev->id], &pdev->dev,
+ pdev->dev.platform_data, pcf);
if (IS_ERR(rdev))
return PTR_ERR(rdev);
diff --git a/drivers/regulator/twl4030-regulator.c b/drivers/regulator/twl4030-regulator.c
new file mode 100644
index 0000000..e2032fb
--- /dev/null
+++ b/drivers/regulator/twl4030-regulator.c
@@ -0,0 +1,500 @@
+/*
+ * twl4030-regulator.c -- support regulators in twl4030 family chips
+ *
+ * Copyright (C) 2008 David Brownell
+ *
+ * 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 License, or
+ * (at your option) any later version.
+ */
+
+#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/twl4030.h>
+
+
+/*
+ * The TWL4030/TW5030/TPS659x0 family chips include power management, a
+ * USB OTG transceiver, an RTC, ADC, PWM, and lots more. Some versions
+ * include an audio codec, battery charger, and more voltage regulators.
+ * These chips are often used in OMAP-based systems.
+ *
+ * This driver implements software-based resource control for various
+ * voltage regulators. This is usually augmented with state machine
+ * based control.
+ */
+
+struct twlreg_info {
+ /* start of regulator's PM_RECEIVER control register bank */
+ u8 base;
+
+ /* twl4030 resource ID, for resource control state machine */
+ u8 id;
+
+ /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
+ u8 table_len;
+ const u16 *table;
+
+ /* chip constraints on regulator behavior */
+ u16 min_mV;
+
+ /* used by regulator core */
+ struct regulator_desc desc;
+};
+
+
+/* LDO control registers ... offset is from the base of its register bank.
+ * The first three registers of all power resource banks help hardware to
+ * manage the various resource groups.
+ */
+#define VREG_GRP 0
+#define VREG_TYPE 1
+#define VREG_REMAP 2
+#define VREG_DEDICATED 3 /* LDO control */
+
+
+static inline int
+twl4030reg_read(struct twlreg_info *info, unsigned offset)
+{
+ u8 value;
+ int status;
+
+ status = twl4030_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER,
+ &value, info->base + offset);
+ return (status < 0) ? status : value;
+}
+
+static inline int
+twl4030reg_write(struct twlreg_info *info, unsigned offset, u8 value)
+{
+ return twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ value, info->base + offset);
+}
+
+/*----------------------------------------------------------------------*/
+
+/* generic power resource operations, which work on all regulators */
+
+static int twl4030reg_grp(struct regulator_dev *rdev)
+{
+ return twl4030reg_read(rdev_get_drvdata(rdev), VREG_GRP);
+}
+
+/*
+ * Enable/disable regulators by joining/leaving the P1 (processor) group.
+ * We assume nobody else is updating the DEV_GRP registers.
+ */
+
+#define P3_GRP BIT(7) /* "peripherals" */
+#define P2_GRP BIT(6) /* secondary processor, modem, etc */
+#define P1_GRP BIT(5) /* CPU/Linux */
+
+static int twl4030reg_is_enabled(struct regulator_dev *rdev)
+{
+ int state = twl4030reg_grp(rdev);
+
+ if (state < 0)
+ return state;
+
+ return (state & P1_GRP) != 0;
+}
+
+static int twl4030reg_enable(struct regulator_dev *rdev)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+ int grp;
+
+ grp = twl4030reg_read(info, VREG_GRP);
+ if (grp < 0)
+ return grp;
+
+ grp |= P1_GRP;
+ return twl4030reg_write(info, VREG_GRP, grp);
+}
+
+static int twl4030reg_disable(struct regulator_dev *rdev)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+ int grp;
+
+ grp = twl4030reg_read(info, VREG_GRP);
+ if (grp < 0)
+ return grp;
+
+ grp &= ~P1_GRP;
+ return twl4030reg_write(info, VREG_GRP, grp);
+}
+
+static int twl4030reg_get_status(struct regulator_dev *rdev)
+{
+ int state = twl4030reg_grp(rdev);
+
+ if (state < 0)
+ return state;
+ state &= 0x0f;
+
+ /* assume state != WARM_RESET; we'd not be running... */
+ if (!state)
+ return REGULATOR_STATUS_OFF;
+ return (state & BIT(3))
+ ? REGULATOR_STATUS_NORMAL
+ : REGULATOR_STATUS_STANDBY;
+}
+
+static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+ unsigned message;
+ int status;
+
+ /* We can only set the mode through state machine commands... */
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
+ break;
+ case REGULATOR_MODE_STANDBY:
+ message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Ensure the resource is associated with some group */
+ status = twl4030reg_grp(rdev);
+ if (status < 0)
+ return status;
+ if (!(status & (P3_GRP | P2_GRP | P1_GRP)))
+ return -EACCES;
+
+ status = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
+ message >> 8, 0x15 /* PB_WORD_MSB */ );
+ if (status >= 0)
+ return status;
+
+ return twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
+ message, 0x16 /* PB_WORD_LSB */ );
+}
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
+ * select field in its control register. We use tables indexed by VSEL
+ * to record voltages in milliVolts. (Accuracy is about three percent.)
+ *
+ * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
+ * currently handled by listing two slightly different VAUX2 regulators,
+ * only one of which will be configured.
+ *
+ * VSEL values documented as "TI cannot support these values" are flagged
+ * in these tables as UNSUP() values; we normally won't assign them.
+ *
+ * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
+ * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
+ */
+#ifdef CONFIG_TWL4030_ALLOW_UNSUPPORTED
+#define UNSUP_MASK 0x0000
+#else
+#define UNSUP_MASK 0x8000
+#endif
+
+#define UNSUP(x) (UNSUP_MASK | (x))
+#define IS_UNSUP(x) (UNSUP_MASK & (x))
+#define LDO_MV(x) (~UNSUP_MASK & (x))
+
+
+static const u16 VAUX1_VSEL_table[] = {
+ UNSUP(1500), UNSUP(1800), 2500, 2800,
+ 3000, 3000, 3000, 3000,
+};
+static const u16 VAUX2_4030_VSEL_table[] = {
+ UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
+ 1500, 1800, UNSUP(1850), 2500,
+ UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
+ UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
+};
+static const u16 VAUX2_VSEL_table[] = {
+ 1700, 1700, 1900, 1300,
+ 1500, 1800, 2000, 2500,
+ 2100, 2800, 2200, 2300,
+ 2400, 2400, 2400, 2400,
+};
+static const u16 VAUX3_VSEL_table[] = {
+ 1500, 1800, 2500, 2800,
+ 3000, 3000, 3000, 3000,
+};
+static const u16 VAUX4_VSEL_table[] = {
+ 700, 1000, 1200, UNSUP(1300),
+ 1500, 1800, UNSUP(1850), 2500,
+ UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
+ UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
+};
+static const u16 VMMC1_VSEL_table[] = {
+ 1850, 2850, 3000, 3150,
+};
+static const u16 VMMC2_VSEL_table[] = {
+ UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
+ UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
+ 2600, 2800, 2850, 3000,
+ 3150, 3150, 3150, 3150,
+};
+static const u16 VPLL1_VSEL_table[] = {
+ 1000, 1200, 1300, 1800,
+ UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
+};
+static const u16 VPLL2_VSEL_table[] = {
+ 700, 1000, 1200, 1300,
+ UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
+ UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
+ UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
+};
+static const u16 VSIM_VSEL_table[] = {
+ UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
+ 2800, 3000, 3000, 3000,
+};
+static const u16 VDAC_VSEL_table[] = {
+ 1200, 1300, 1800, 1800,
+};
+
+
+static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+ int mV = info->table[index];
+
+ return IS_UNSUP(mV) ? 0 : (LDO_MV(mV) * 1000);
+}
+
+static int
+twl4030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+ int vsel;
+
+ for (vsel = 0; vsel < info->table_len; vsel++) {
+ int mV = info->table[vsel];
+ int uV;
+
+ if (IS_UNSUP(mV))
+ continue;
+ uV = LDO_MV(mV) * 1000;
+
+ /* REVISIT for VAUX2, first match may not be best/lowest */
+
+ /* use the first in-range value */
+ if (min_uV <= uV && uV <= max_uV)
+ return twl4030reg_write(info, VREG_DEDICATED, vsel);
+ }
+
+ return -EDOM;
+}
+
+static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+ int vsel = twl4030reg_read(info, VREG_DEDICATED);
+
+ if (vsel < 0)
+ return vsel;
+
+ vsel &= info->table_len - 1;
+ return LDO_MV(info->table[vsel]) * 1000;
+}
+
+static struct regulator_ops twl4030ldo_ops = {
+ .list_voltage = twl4030ldo_list_voltage,
+
+ .set_voltage = twl4030ldo_set_voltage,
+ .get_voltage = twl4030ldo_get_voltage,
+
+ .enable = twl4030reg_enable,
+ .disable = twl4030reg_disable,
+ .is_enabled = twl4030reg_is_enabled,
+
+ .set_mode = twl4030reg_set_mode,
+
+ .get_status = twl4030reg_get_status,
+};
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * Fixed voltage LDOs don't have a VSEL field to update.
+ */
+static int twl4030fixed_list_voltage(struct regulator_dev *rdev, unsigned index)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+
+ return info->min_mV * 1000;
+}
+
+static int twl4030fixed_get_voltage(struct regulator_dev *rdev)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+
+ return info->min_mV * 1000;
+}
+
+static struct regulator_ops twl4030fixed_ops = {
+ .list_voltage = twl4030fixed_list_voltage,
+
+ .get_voltage = twl4030fixed_get_voltage,
+
+ .enable = twl4030reg_enable,
+ .disable = twl4030reg_disable,
+ .is_enabled = twl4030reg_is_enabled,
+
+ .set_mode = twl4030reg_set_mode,
+
+ .get_status = twl4030reg_get_status,
+};
+
+/*----------------------------------------------------------------------*/
+
+#define TWL_ADJUSTABLE_LDO(label, offset, num) { \
+ .base = offset, \
+ .id = num, \
+ .table_len = ARRAY_SIZE(label##_VSEL_table), \
+ .table = label##_VSEL_table, \
+ .desc = { \
+ .name = #label, \
+ .id = TWL4030_REG_##label, \
+ .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
+ .ops = &twl4030ldo_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ }, \
+ }
+
+#define TWL_FIXED_LDO(label, offset, mVolts, num) { \
+ .base = offset, \
+ .id = num, \
+ .min_mV = mVolts, \
+ .desc = { \
+ .name = #label, \
+ .id = TWL4030_REG_##label, \
+ .n_voltages = 1, \
+ .ops = &twl4030fixed_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ }, \
+ }
+
+/*
+ * We list regulators here if systems need some level of
+ * software control over them after boot.
+ */
+static struct twlreg_info twl4030_regs[] = {
+ TWL_ADJUSTABLE_LDO(VAUX1, 0x17, 1),
+ TWL_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2),
+ TWL_ADJUSTABLE_LDO(VAUX2, 0x1b, 2),
+ TWL_ADJUSTABLE_LDO(VAUX3, 0x1f, 3),
+ TWL_ADJUSTABLE_LDO(VAUX4, 0x23, 4),
+ TWL_ADJUSTABLE_LDO(VMMC1, 0x27, 5),
+ TWL_ADJUSTABLE_LDO(VMMC2, 0x2b, 6),
+ /*
+ TWL_ADJUSTABLE_LDO(VPLL1, 0x2f, 7),
+ */
+ TWL_ADJUSTABLE_LDO(VPLL2, 0x33, 8),
+ TWL_ADJUSTABLE_LDO(VSIM, 0x37, 9),
+ TWL_ADJUSTABLE_LDO(VDAC, 0x3b, 10),
+ /*
+ TWL_ADJUSTABLE_LDO(VINTANA1, 0x3f, 11),
+ TWL_ADJUSTABLE_LDO(VINTANA2, 0x43, 12),
+ TWL_ADJUSTABLE_LDO(VINTDIG, 0x47, 13),
+ TWL_SMPS(VIO, 0x4b, 14),
+ TWL_SMPS(VDD1, 0x55, 15),
+ TWL_SMPS(VDD2, 0x63, 16),
+ */
+ TWL_FIXED_LDO(VUSB1V5, 0x71, 1500, 17),
+ TWL_FIXED_LDO(VUSB1V8, 0x74, 1800, 18),
+ TWL_FIXED_LDO(VUSB3V1, 0x77, 3100, 19),
+ /* VUSBCP is managed *only* by the USB subchip */
+};
+
+static int twl4030reg_probe(struct platform_device *pdev)
+{
+ int i;
+ struct twlreg_info *info;
+ struct regulator_init_data *initdata;
+ struct regulation_constraints *c;
+ struct regulator_dev *rdev;
+
+ for (i = 0, info = NULL; i < ARRAY_SIZE(twl4030_regs); i++) {
+ if (twl4030_regs[i].desc.id != pdev->id)
+ continue;
+ info = twl4030_regs + i;
+ break;
+ }
+ if (!info)
+ return -ENODEV;
+
+ initdata = pdev->dev.platform_data;
+ if (!initdata)
+ return -EINVAL;
+
+ /* Constrain board-specific capabilities according to what
+ * this driver and the chip itself can actually do.
+ */
+ c = &initdata->constraints;
+ c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
+ c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
+ | REGULATOR_CHANGE_MODE
+ | REGULATOR_CHANGE_STATUS;
+
+ rdev = regulator_register(&info->desc, &pdev->dev, initdata, info);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "can't register %s, %ld\n",
+ info->desc.name, PTR_ERR(rdev));
+ return PTR_ERR(rdev);
+ }
+ platform_set_drvdata(pdev, rdev);
+
+ /* NOTE: many regulators support short-circuit IRQs (presentable
+ * as REGULATOR_OVER_CURRENT notifications?) configured via:
+ * - SC_CONFIG
+ * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
+ * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
+ * - IT_CONFIG
+ */
+
+ return 0;
+}
+
+static int __devexit twl4030reg_remove(struct platform_device *pdev)
+{
+ regulator_unregister(platform_get_drvdata(pdev));
+ return 0;
+}
+
+MODULE_ALIAS("platform:twl4030_reg");
+
+static struct platform_driver twl4030reg_driver = {
+ .probe = twl4030reg_probe,
+ .remove = __devexit_p(twl4030reg_remove),
+ /* NOTE: short name, to work around driver model truncation of
+ * "twl4030_regulator.12" (and friends) to "twl4030_regulator.1".
+ */
+ .driver.name = "twl4030_reg",
+ .driver.owner = THIS_MODULE,
+};
+
+static int __init twl4030reg_init(void)
+{
+ return platform_driver_register(&twl4030reg_driver);
+}
+subsys_initcall(twl4030reg_init);
+
+static void __exit twl4030reg_exit(void)
+{
+ platform_driver_unregister(&twl4030reg_driver);
+}
+module_exit(twl4030reg_exit)
+
+MODULE_DESCRIPTION("TWL4030 regulator driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/regulator/virtual.c b/drivers/regulator/virtual.c
index 5ddb464..3d08348 100644
--- a/drivers/regulator/virtual.c
+++ b/drivers/regulator/virtual.c
@@ -226,13 +226,17 @@ static ssize_t set_mode(struct device *dev, struct device_attribute *attr,
unsigned int mode;
int ret;
- if (strncmp(buf, "fast", strlen("fast")) == 0)
+ /*
+ * sysfs_streq() doesn't need the \n's, but we add them so the strings
+ * will be shared with show_mode(), above.
+ */
+ if (sysfs_streq(buf, "fast\n") == 0)
mode = REGULATOR_MODE_FAST;
- else if (strncmp(buf, "normal", strlen("normal")) == 0)
+ else if (sysfs_streq(buf, "normal\n") == 0)
mode = REGULATOR_MODE_NORMAL;
- else if (strncmp(buf, "idle", strlen("idle")) == 0)
+ else if (sysfs_streq(buf, "idle\n") == 0)
mode = REGULATOR_MODE_IDLE;
- else if (strncmp(buf, "standby", strlen("standby")) == 0)
+ else if (sysfs_streq(buf, "standby\n") == 0)
mode = REGULATOR_MODE_STANDBY;
else {
dev_err(dev, "Configuring invalid mode\n");
@@ -256,7 +260,7 @@ static DEVICE_ATTR(min_microamps, 0666, show_min_uA, set_min_uA);
static DEVICE_ATTR(max_microamps, 0666, show_max_uA, set_max_uA);
static DEVICE_ATTR(mode, 0666, show_mode, set_mode);
-struct device_attribute *attributes[] = {
+static struct device_attribute *attributes[] = {
&dev_attr_min_microvolts,
&dev_attr_max_microvolts,
&dev_attr_min_microamps,
diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c
index 5056e23..771eca1 100644
--- a/drivers/regulator/wm8350-regulator.c
+++ b/drivers/regulator/wm8350-regulator.c
@@ -24,6 +24,9 @@
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
+/* Maximum value possible for VSEL */
+#define WM8350_DCDC_MAX_VSEL 0x66
+
/* Microamps */
static const int isink_cur[] = {
4,
@@ -385,6 +388,14 @@ static int wm8350_dcdc_get_voltage(struct regulator_dev *rdev)
return wm8350_dcdc_val_to_mvolts(val) * 1000;
}
+static int wm8350_dcdc_list_voltage(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ if (selector > WM8350_DCDC_MAX_VSEL)
+ return -EINVAL;
+ return wm8350_dcdc_val_to_mvolts(selector) * 1000;
+}
+
static int wm8350_dcdc_set_suspend_voltage(struct regulator_dev *rdev, int uV)
{
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
@@ -775,6 +786,14 @@ static int wm8350_ldo_get_voltage(struct regulator_dev *rdev)
return wm8350_ldo_val_to_mvolts(val) * 1000;
}
+static int wm8350_ldo_list_voltage(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ if (selector > WM8350_LDO1_VSEL_MASK)
+ return -EINVAL;
+ return wm8350_ldo_val_to_mvolts(selector) * 1000;
+}
+
int wm8350_dcdc_set_slot(struct wm8350 *wm8350, int dcdc, u16 start,
u16 stop, u16 fault)
{
@@ -1031,18 +1050,30 @@ static unsigned int wm8350_dcdc_get_mode(struct regulator_dev *rdev)
int dcdc = rdev_get_id(rdev);
u16 mask, sleep, active, force;
int mode = REGULATOR_MODE_NORMAL;
+ int reg;
- if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
- return -EINVAL;
-
- if (dcdc == WM8350_DCDC_2 || dcdc == WM8350_DCDC_5)
+ switch (dcdc) {
+ case WM8350_DCDC_1:
+ reg = WM8350_DCDC1_FORCE_PWM;
+ break;
+ case WM8350_DCDC_3:
+ reg = WM8350_DCDC3_FORCE_PWM;
+ break;
+ case WM8350_DCDC_4:
+ reg = WM8350_DCDC4_FORCE_PWM;
+ break;
+ case WM8350_DCDC_6:
+ reg = WM8350_DCDC6_FORCE_PWM;
+ break;
+ default:
return -EINVAL;
+ }
mask = 1 << (dcdc - WM8350_DCDC_1);
active = wm8350_reg_read(wm8350, WM8350_DCDC_ACTIVE_OPTIONS) & mask;
+ force = wm8350_reg_read(wm8350, reg) & WM8350_DCDC1_FORCE_PWM_ENA;
sleep = wm8350_reg_read(wm8350, WM8350_DCDC_SLEEP_OPTIONS) & mask;
- force = wm8350_reg_read(wm8350, WM8350_DCDC1_FORCE_PWM)
- & WM8350_DCDC1_FORCE_PWM_ENA;
+
dev_dbg(wm8350->dev, "mask %x active %x sleep %x force %x",
mask, active, sleep, force);
@@ -1150,6 +1181,7 @@ static int wm8350_ldo_is_enabled(struct regulator_dev *rdev)
static struct regulator_ops wm8350_dcdc_ops = {
.set_voltage = wm8350_dcdc_set_voltage,
.get_voltage = wm8350_dcdc_get_voltage,
+ .list_voltage = wm8350_dcdc_list_voltage,
.enable = wm8350_dcdc_enable,
.disable = wm8350_dcdc_disable,
.get_mode = wm8350_dcdc_get_mode,
@@ -1173,6 +1205,7 @@ static struct regulator_ops wm8350_dcdc2_5_ops = {
static struct regulator_ops wm8350_ldo_ops = {
.set_voltage = wm8350_ldo_set_voltage,
.get_voltage = wm8350_ldo_get_voltage,
+ .list_voltage = wm8350_ldo_list_voltage,
.enable = wm8350_ldo_enable,
.disable = wm8350_ldo_disable,
.is_enabled = wm8350_ldo_is_enabled,
@@ -1197,6 +1230,7 @@ static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
.ops = &wm8350_dcdc_ops,
.irq = WM8350_IRQ_UV_DC1,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
.owner = THIS_MODULE,
},
{
@@ -1213,6 +1247,7 @@ static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
.ops = &wm8350_dcdc_ops,
.irq = WM8350_IRQ_UV_DC3,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
.owner = THIS_MODULE,
},
{
@@ -1221,6 +1256,7 @@ static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
.ops = &wm8350_dcdc_ops,
.irq = WM8350_IRQ_UV_DC4,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
.owner = THIS_MODULE,
},
{
@@ -1237,6 +1273,7 @@ static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
.ops = &wm8350_dcdc_ops,
.irq = WM8350_IRQ_UV_DC6,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
.owner = THIS_MODULE,
},
{
@@ -1245,6 +1282,7 @@ static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
.ops = &wm8350_ldo_ops,
.irq = WM8350_IRQ_UV_LDO1,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_LDO1_VSEL_MASK + 1,
.owner = THIS_MODULE,
},
{
@@ -1253,6 +1291,7 @@ static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
.ops = &wm8350_ldo_ops,
.irq = WM8350_IRQ_UV_LDO2,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_LDO2_VSEL_MASK + 1,
.owner = THIS_MODULE,
},
{
@@ -1261,6 +1300,7 @@ static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
.ops = &wm8350_ldo_ops,
.irq = WM8350_IRQ_UV_LDO3,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_LDO3_VSEL_MASK + 1,
.owner = THIS_MODULE,
},
{
@@ -1269,6 +1309,7 @@ static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
.ops = &wm8350_ldo_ops,
.irq = WM8350_IRQ_UV_LDO4,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_LDO4_VSEL_MASK + 1,
.owner = THIS_MODULE,
},
{
@@ -1293,6 +1334,7 @@ static void pmic_uv_handler(struct wm8350 *wm8350, int irq, void *data)
{
struct regulator_dev *rdev = (struct regulator_dev *)data;
+ mutex_lock(&rdev->mutex);
if (irq == WM8350_IRQ_CS1 || irq == WM8350_IRQ_CS2)
regulator_notifier_call_chain(rdev,
REGULATOR_EVENT_REGULATION_OUT,
@@ -1301,6 +1343,7 @@ static void pmic_uv_handler(struct wm8350 *wm8350, int irq, void *data)
regulator_notifier_call_chain(rdev,
REGULATOR_EVENT_UNDER_VOLTAGE,
wm8350);
+ mutex_unlock(&rdev->mutex);
}
static int wm8350_regulator_probe(struct platform_device *pdev)
@@ -1333,9 +1376,9 @@ static int wm8350_regulator_probe(struct platform_device *pdev)
break;
}
-
/* register regulator */
rdev = regulator_register(&wm8350_reg[pdev->id], &pdev->dev,
+ pdev->dev.platform_data,
dev_get_drvdata(&pdev->dev));
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register %s\n",
diff --git a/drivers/regulator/wm8400-regulator.c b/drivers/regulator/wm8400-regulator.c
index 56e23d4..1574260 100644
--- a/drivers/regulator/wm8400-regulator.c
+++ b/drivers/regulator/wm8400-regulator.c
@@ -43,6 +43,18 @@ static int wm8400_ldo_disable(struct regulator_dev *dev)
WM8400_LDO1_ENA, 0);
}
+static int wm8400_ldo_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ if (selector > WM8400_LDO1_VSEL_MASK)
+ return -EINVAL;
+
+ if (selector < 15)
+ return 900000 + (selector * 50000);
+ else
+ return 1600000 + ((selector - 14) * 100000);
+}
+
static int wm8400_ldo_get_voltage(struct regulator_dev *dev)
{
struct wm8400 *wm8400 = rdev_get_drvdata(dev);
@@ -51,10 +63,7 @@ static int wm8400_ldo_get_voltage(struct regulator_dev *dev)
val = wm8400_reg_read(wm8400, WM8400_LDO1_CONTROL + rdev_get_id(dev));
val &= WM8400_LDO1_VSEL_MASK;
- if (val < 15)
- return 900000 + (val * 50000);
- else
- return 1600000 + ((val - 14) * 100000);
+ return wm8400_ldo_list_voltage(dev, val);
}
static int wm8400_ldo_set_voltage(struct regulator_dev *dev,
@@ -92,6 +101,7 @@ static struct regulator_ops wm8400_ldo_ops = {
.is_enabled = wm8400_ldo_is_enabled,
.enable = wm8400_ldo_enable,
.disable = wm8400_ldo_disable,
+ .list_voltage = wm8400_ldo_list_voltage,
.get_voltage = wm8400_ldo_get_voltage,
.set_voltage = wm8400_ldo_set_voltage,
};
@@ -124,6 +134,15 @@ static int wm8400_dcdc_disable(struct regulator_dev *dev)
WM8400_DC1_ENA, 0);
}
+static int wm8400_dcdc_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ if (selector > WM8400_DC1_VSEL_MASK)
+ return -EINVAL;
+
+ return 850000 + (selector * 25000);
+}
+
static int wm8400_dcdc_get_voltage(struct regulator_dev *dev)
{
struct wm8400 *wm8400 = rdev_get_drvdata(dev);
@@ -237,6 +256,7 @@ static struct regulator_ops wm8400_dcdc_ops = {
.is_enabled = wm8400_dcdc_is_enabled,
.enable = wm8400_dcdc_enable,
.disable = wm8400_dcdc_disable,
+ .list_voltage = wm8400_dcdc_list_voltage,
.get_voltage = wm8400_dcdc_get_voltage,
.set_voltage = wm8400_dcdc_set_voltage,
.get_mode = wm8400_dcdc_get_mode,
@@ -249,6 +269,7 @@ static struct regulator_desc regulators[] = {
.name = "LDO1",
.id = WM8400_LDO1,
.ops = &wm8400_ldo_ops,
+ .n_voltages = WM8400_LDO1_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -256,6 +277,7 @@ static struct regulator_desc regulators[] = {
.name = "LDO2",
.id = WM8400_LDO2,
.ops = &wm8400_ldo_ops,
+ .n_voltages = WM8400_LDO2_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -263,6 +285,7 @@ static struct regulator_desc regulators[] = {
.name = "LDO3",
.id = WM8400_LDO3,
.ops = &wm8400_ldo_ops,
+ .n_voltages = WM8400_LDO3_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -270,6 +293,7 @@ static struct regulator_desc regulators[] = {
.name = "LDO4",
.id = WM8400_LDO4,
.ops = &wm8400_ldo_ops,
+ .n_voltages = WM8400_LDO4_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -277,6 +301,7 @@ static struct regulator_desc regulators[] = {
.name = "DCDC1",
.id = WM8400_DCDC1,
.ops = &wm8400_dcdc_ops,
+ .n_voltages = WM8400_DC1_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -284,6 +309,7 @@ static struct regulator_desc regulators[] = {
.name = "DCDC2",
.id = WM8400_DCDC2,
.ops = &wm8400_dcdc_ops,
+ .n_voltages = WM8400_DC2_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -294,7 +320,7 @@ static int __devinit wm8400_regulator_probe(struct platform_device *pdev)
struct regulator_dev *rdev;
rdev = regulator_register(&regulators[pdev->id], &pdev->dev,
- pdev->dev.driver_data);
+ pdev->dev.platform_data, pdev->dev.driver_data);
if (IS_ERR(rdev))
return PTR_ERR(rdev);
diff --git a/include/linux/i2c/twl4030.h b/include/linux/i2c/twl4030.h
index 8137f66..0dc80ef 100644
--- a/include/linux/i2c/twl4030.h
+++ b/include/linux/i2c/twl4030.h
@@ -218,6 +218,53 @@ int twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
/*----------------------------------------------------------------------*/
+/* Power bus message definitions */
+
+#define DEV_GRP_NULL 0x0
+#define DEV_GRP_P1 0x1
+#define DEV_GRP_P2 0x2
+#define DEV_GRP_P3 0x4
+
+#define RES_GRP_RES 0x0
+#define RES_GRP_PP 0x1
+#define RES_GRP_RC 0x2
+#define RES_GRP_PP_RC 0x3
+#define RES_GRP_PR 0x4
+#define RES_GRP_PP_PR 0x5
+#define RES_GRP_RC_PR 0x6
+#define RES_GRP_ALL 0x7
+
+#define RES_TYPE2_R0 0x0
+
+#define RES_TYPE_ALL 0x7
+
+#define RES_STATE_WRST 0xF
+#define RES_STATE_ACTIVE 0xE
+#define RES_STATE_SLEEP 0x8
+#define RES_STATE_OFF 0x0
+
+/*
+ * Power Bus Message Format ... these can be sent individually by Linux,
+ * but are usually part of downloaded scripts that are run when various
+ * power events are triggered.
+ *
+ * Broadcast Message (16 Bits):
+ * DEV_GRP[15:13] MT[12] RES_GRP[11:9] RES_TYPE2[8:7] RES_TYPE[6:4]
+ * RES_STATE[3:0]
+ *
+ * Singular Message (16 Bits):
+ * DEV_GRP[15:13] MT[12] RES_ID[11:4] RES_STATE[3:0]
+ */
+
+#define MSG_BROADCAST(devgrp, grp, type, type2, state) \
+ ( (devgrp) << 13 | 1 << 12 | (grp) << 9 | (type2) << 7 \
+ | (type) << 4 | (state))
+
+#define MSG_SINGULAR(devgrp, id, state) \
+ ((devgrp) << 13 | 0 << 12 | (id) << 4 | (state))
+
+/*----------------------------------------------------------------------*/
+
struct twl4030_bci_platform_data {
int *battery_tmp_tbl;
unsigned int tblsize;
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 4e45725..3e7615e 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -192,5 +192,10 @@ static inline void mmc_signal_sdio_irq(struct mmc_host *host)
wake_up_process(host->sdio_irq_thread);
}
+struct regulator;
+
+int mmc_regulator_get_ocrmask(struct regulator *supply);
+int mmc_regulator_set_ocr(struct regulator *supply, unsigned short vdd_bit);
+
#endif
diff --git a/include/linux/regulator/bq24022.h b/include/linux/regulator/bq24022.h
index e84b0a9..a6d0140 100644
--- a/include/linux/regulator/bq24022.h
+++ b/include/linux/regulator/bq24022.h
@@ -10,6 +10,8 @@
*
*/
+struct regulator_init_data;
+
/**
* bq24022_mach_info - platform data for bq24022
* @gpio_nce: GPIO line connected to the nCE pin, used to enable / disable charging
@@ -18,4 +20,5 @@
struct bq24022_mach_info {
int gpio_nce;
int gpio_iset2;
+ struct regulator_init_data *init_data;
};
diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index 801bf77..277f4b9 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -3,7 +3,7 @@
*
* Copyright (C) 2007, 2008 Wolfson Microelectronics PLC.
*
- * Author: Liam Girdwood <lg@opensource.wolfsonmicro.com>
+ * Author: Liam Girdwood <lrg@slimlogic.co.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -88,6 +88,7 @@
* FAIL Regulator output has failed.
* OVER_TEMP Regulator over temp.
* FORCE_DISABLE Regulator shut down by software.
+ * VOLTAGE_CHANGE Regulator voltage changed.
*
* NOTE: These events can be OR'ed together when passed into handler.
*/
@@ -98,6 +99,7 @@
#define REGULATOR_EVENT_FAIL 0x08
#define REGULATOR_EVENT_OVER_TEMP 0x10
#define REGULATOR_EVENT_FORCE_DISABLE 0x20
+#define REGULATOR_EVENT_VOLTAGE_CHANGE 0x40
struct regulator;
@@ -140,6 +142,8 @@ int regulator_bulk_disable(int num_consumers,
void regulator_bulk_free(int num_consumers,
struct regulator_bulk_data *consumers);
+int regulator_count_voltages(struct regulator *regulator);
+int regulator_list_voltage(struct regulator *regulator, unsigned selector);
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 2dae057..4848d8d 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -3,7 +3,7 @@
*
* Copyright (C) 2007, 2008 Wolfson Microelectronics PLC.
*
- * Author: Liam Girdwood <lg@opensource.wolfsonmicro.com>
+ * Author: Liam Girdwood <lrg@slimlogic.co.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -21,25 +21,38 @@
struct regulator_dev;
struct regulator_init_data;
+enum regulator_status {
+ REGULATOR_STATUS_OFF,
+ REGULATOR_STATUS_ON,
+ REGULATOR_STATUS_ERROR,
+ /* fast/normal/idle/standby are flavors of "on" */
+ REGULATOR_STATUS_FAST,
+ REGULATOR_STATUS_NORMAL,
+ REGULATOR_STATUS_IDLE,
+ REGULATOR_STATUS_STANDBY,
+};
+
/**
* struct regulator_ops - regulator operations.
*
- * This struct describes regulator operations which can be implemented by
- * regulator chip drivers.
- *
- * @enable: Enable the regulator.
- * @disable: Disable the regulator.
+ * @enable: Configure the regulator as enabled.
+ * @disable: Configure the regulator as disabled.
* @is_enabled: Return 1 if the regulator is enabled, 0 otherwise.
*
* @set_voltage: Set the voltage for the regulator within the range specified.
* The driver should select the voltage closest to min_uV.
* @get_voltage: Return the currently configured voltage for the regulator.
+ * @list_voltage: Return one of the supported voltages, in microvolts; zero
+ * if the selector indicates a voltage that is unusable on this system;
+ * or negative errno. Selectors range from zero to one less than
+ * regulator_desc.n_voltages. Voltages may be reported in any order.
*
* @set_current_limit: Configure a limit for a current-limited regulator.
- * @get_current_limit: Get the limit for a current-limited regulator.
+ * @get_current_limit: Get the configured limit for a current-limited regulator.
*
- * @set_mode: Set the operating mode for the regulator.
- * @get_mode: Get the current operating mode for the regulator.
+ * @get_mode: Get the configured operating mode for the regulator.
+ * @get_status: Return actual (not as-configured) status of regulator, as a
+ * REGULATOR_STATUS value (or negative errno)
* @get_optimum_mode: Get the most efficient operating mode for the regulator
* when running with the specified parameters.
*
@@ -51,9 +64,15 @@ struct regulator_init_data;
* suspended.
* @set_suspend_mode: Set the operating mode for the regulator when the
* system is suspended.
+ *
+ * This struct describes regulator operations which can be implemented by
+ * regulator chip drivers.
*/
struct regulator_ops {
+ /* enumerate supported voltages */
+ int (*list_voltage) (struct regulator_dev *, unsigned selector);
+
/* get/set regulator voltage */
int (*set_voltage) (struct regulator_dev *, int min_uV, int max_uV);
int (*get_voltage) (struct regulator_dev *);
@@ -72,6 +91,13 @@ struct regulator_ops {
int (*set_mode) (struct regulator_dev *, unsigned int mode);
unsigned int (*get_mode) (struct regulator_dev *);
+ /* report regulator status ... most other accessors report
+ * control inputs, this reports results of combining inputs
+ * from Linux (and other sources) with the actual load.
+ * returns REGULATOR_STATUS_* or negative errno.
+ */
+ int (*get_status)(struct regulator_dev *);
+
/* get most efficient regulator operating mode for load */
unsigned int (*get_optimum_mode) (struct regulator_dev *, int input_uV,
int output_uV, int load_uA);
@@ -106,6 +132,7 @@ enum regulator_type {
*
* @name: Identifying name for the regulator.
* @id: Numerical identifier for the regulator.
+ * @n_voltages: Number of selectors available for ops.list_voltage().
* @ops: Regulator operations table.
* @irq: Interrupt number for the regulator.
* @type: Indicates if the regulator is a voltage or current regulator.
@@ -114,14 +141,48 @@ enum regulator_type {
struct regulator_desc {
const char *name;
int id;
+ unsigned n_voltages;
struct regulator_ops *ops;
int irq;
enum regulator_type type;
struct module *owner;
};
+/*
+ * struct regulator_dev
+ *
+ * Voltage / Current regulator class device. One for each
+ * regulator.
+ *
+ * This should *not* be used directly by anything except the regulator
+ * core and notification injection (which should take the mutex and do
+ * no other direct access).
+ */
+struct regulator_dev {
+ struct regulator_desc *desc;
+ int use_count;
+
+ /* lists we belong to */
+ struct list_head list; /* list of all regulators */
+ struct list_head slist; /* list of supplied regulators */
+
+ /* lists we own */
+ struct list_head consumer_list; /* consumers we supply */
+ struct list_head supply_list; /* regulators we supply */
+
+ struct blocking_notifier_head notifier;
+ struct mutex mutex; /* consumer lock */
+ struct module *owner;
+ struct device dev;
+ struct regulation_constraints *constraints;
+ struct regulator_dev *supply; /* for tree */
+
+ void *reg_data; /* regulator_dev data */
+};
+
struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
- struct device *dev, void *driver_data);
+ struct device *dev, struct regulator_init_data *init_data,
+ void *driver_data);
void regulator_unregister(struct regulator_dev *rdev);
int regulator_notifier_call_chain(struct regulator_dev *rdev,
diff --git a/include/linux/regulator/fixed.h b/include/linux/regulator/fixed.h
index 1387a5d..91b4da3 100644
--- a/include/linux/regulator/fixed.h
+++ b/include/linux/regulator/fixed.h
@@ -14,9 +14,12 @@
#ifndef __REGULATOR_FIXED_H
#define __REGULATOR_FIXED_H
+struct regulator_init_data;
+
struct fixed_voltage_config {
const char *supply_name;
int microvolts;
+ struct regulator_init_data *init_data;
};
#endif
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index 3794773..bac64fa 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -3,7 +3,7 @@
*
* Copyright (C) 2007, 2008 Wolfson Microelectronics PLC.
*
- * Author: Liam Girdwood <lg@opensource.wolfsonmicro.com>
+ * Author: Liam Girdwood <lrg@slimlogic.co.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -73,7 +73,9 @@ struct regulator_state {
*
* @always_on: Set if the regulator should never be disabled.
* @boot_on: Set if the regulator is enabled when the system is initially
- * started.
+ * started. If the regulator is not enabled by the hardware or
+ * bootloader then it will be enabled when the constraints are
+ * applied.
* @apply_uV: Apply the voltage constraint when initialising.
*
* @input_uV: Input voltage for regulator when supplied by another regulator.
@@ -83,6 +85,7 @@ struct regulator_state {
* @state_standby: State for regulator when system is suspended in standby
* mode.
* @initial_state: Suspend state to set by default.
+ * @initial_mode: Mode to set at startup.
*/
struct regulation_constraints {
@@ -111,6 +114,9 @@ struct regulation_constraints {
struct regulator_state state_standby;
suspend_state_t initial_state; /* suspend state to set at init */
+ /* mode to set on startup */
+ unsigned int initial_mode;
+
/* constriant flags */
unsigned always_on:1; /* regulator never off when system is on */
unsigned boot_on:1; /* bootloader/firmware enabled regulator */
@@ -160,4 +166,6 @@ struct regulator_init_data {
int regulator_suspend_prepare(suspend_state_t state);
+void regulator_has_full_constraints(void);
+
#endif
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