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-rw-r--r--drivers/regulator/Kconfig49
-rw-r--r--drivers/regulator/Makefile6
-rw-r--r--drivers/regulator/core.c147
-rw-r--r--drivers/regulator/fan53555.c195
-rw-r--r--drivers/regulator/hi6421-regulator.c634
-rw-r--r--drivers/regulator/internal.h4
-rw-r--r--drivers/regulator/isl9305.c207
-rw-r--r--drivers/regulator/mc13892-regulator.c11
-rw-r--r--drivers/regulator/of_regulator.c51
-rw-r--r--drivers/regulator/pwm-regulator.c197
-rw-r--r--drivers/regulator/qcom_rpm-regulator.c798
-rw-r--r--drivers/regulator/sky81452-regulator.c130
-rw-r--r--drivers/regulator/st-pwm.c190
13 files changed, 2342 insertions, 277 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 1344aa83b438..40eab775047e 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -241,6 +241,23 @@ config REGULATOR_GPIO
and the platform has to provide a mapping of GPIO-states
to target volts/amps.
+config REGULATOR_HI6421
+ tristate "HiSilicon Hi6421 PMIC voltage regulator support"
+ depends on MFD_HI6421_PMIC && OF
+ help
+ This driver provides support for the voltage regulators on the
+ HiSilicon Hi6421 PMU / Codec IC.
+ Hi6421 is a multi-function device which, on regulator part, provides
+ 21 general purpose LDOs, 3 dedicated LDOs, and 5 BUCKs. All
+ of them come with support to either ECO (idle) or sleep mode.
+
+config REGULATOR_ISL9305
+ tristate "Intersil ISL9305 regulator"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ This driver supports ISL9305 voltage regulator chip.
+
config REGULATOR_ISL6271A
tristate "Intersil ISL6271A Power regulator"
depends on I2C
@@ -450,6 +467,25 @@ config REGULATOR_PFUZE100
Say y here to support the regulators found on the Freescale
PFUZE100/PFUZE200 PMIC.
+config REGULATOR_PWM
+ tristate "PWM voltage regulator"
+ depends on PWM
+ help
+ This driver supports PWM controlled voltage regulators. PWM
+ duty cycle can increase or decrease the voltage.
+
+config REGULATOR_QCOM_RPM
+ tristate "Qualcomm RPM regulator driver"
+ depends on MFD_QCOM_RPM
+ help
+ If you say yes to this option, support will be included for the
+ regulators exposed by the Resource Power Manager found in Qualcomm
+ 8660, 8960 and 8064 based devices.
+
+ Say M here if you want to include support for the regulators on the
+ Qualcomm RPM as a module. The module will be named
+ "qcom_rpm-regulator".
+
config REGULATOR_RC5T583
tristate "RICOH RC5T583 Power regulators"
depends on MFD_RC5T583
@@ -484,11 +520,16 @@ config REGULATOR_S5M8767
via I2C bus. S5M8767A have 9 Bucks and 28 LDOs output and
supports DVS mode with 8bits of output voltage control.
-config REGULATOR_ST_PWM
- tristate "STMicroelectronics PWM voltage regulator"
- depends on ARCH_STI
+config REGULATOR_SKY81452
+ tristate "Skyworks Solutions SKY81452 voltage regulator"
+ depends on SKY81452
help
- This driver supports ST's PWM controlled voltage regulators.
+ This driver supports Skyworks SKY81452 voltage output regulator
+ via I2C bus. SKY81452 has one voltage linear regulator can be
+ programmed from 4.5V to 20V.
+
+ This driver can also be built as a module. If so, the module
+ will be called sky81452-regulator.
config REGULATOR_TI_ABB
tristate "TI Adaptive Body Bias on-chip LDO"
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index aa4a6aa7b558..662834856c37 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -32,7 +32,9 @@ obj-$(CONFIG_REGULATOR_DBX500_PRCMU) += dbx500-prcmu.o
obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o
obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o
obj-$(CONFIG_REGULATOR_GPIO) += gpio-regulator.o
+obj-$(CONFIG_REGULATOR_HI6421) += hi6421-regulator.o
obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o
+obj-$(CONFIG_REGULATOR_ISL9305) += isl9305.o
obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o
obj-$(CONFIG_REGULATOR_LP3972) += lp3972.o
obj-$(CONFIG_REGULATOR_LP872X) += lp872x.o
@@ -55,8 +57,10 @@ obj-$(CONFIG_REGULATOR_MAX77693) += max77693.o
obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o
obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o
obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
+obj-$(CONFIG_REGULATOR_QCOM_RPM) += qcom_rpm-regulator.o
obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o
+obj-$(CONFIG_REGULATOR_PWM) += pwm-regulator.o
obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o
obj-$(CONFIG_REGULATOR_PBIAS) += pbias-regulator.o
obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
@@ -65,7 +69,7 @@ obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o
obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o
obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o
obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
-obj-$(CONFIG_REGULATOR_ST_PWM) += st-pwm.o
+obj-$(CONFIG_REGULATOR_SKY81452) += sky81452-regulator.o
obj-$(CONFIG_REGULATOR_STW481X_VMMC) += stw481x-vmmc.o
obj-$(CONFIG_REGULATOR_TI_ABB) += ti-abb-regulator.o
obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index a3c3785901f5..44b4045b98d8 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -839,7 +839,7 @@ static void print_constraints(struct regulator_dev *rdev)
static int machine_constraints_voltage(struct regulator_dev *rdev,
struct regulation_constraints *constraints)
{
- struct regulator_ops *ops = rdev->desc->ops;
+ const struct regulator_ops *ops = rdev->desc->ops;
int ret;
/* do we need to apply the constraint voltage */
@@ -938,7 +938,7 @@ static int machine_constraints_voltage(struct regulator_dev *rdev,
static int machine_constraints_current(struct regulator_dev *rdev,
struct regulation_constraints *constraints)
{
- struct regulator_ops *ops = rdev->desc->ops;
+ const struct regulator_ops *ops = rdev->desc->ops;
int ret;
if (!constraints->min_uA && !constraints->max_uA)
@@ -982,7 +982,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,
const struct regulation_constraints *constraints)
{
int ret = 0;
- struct regulator_ops *ops = rdev->desc->ops;
+ const struct regulator_ops *ops = rdev->desc->ops;
if (constraints)
rdev->constraints = kmemdup(constraints, sizeof(*constraints),
@@ -1759,6 +1759,45 @@ static int regulator_ena_gpio_ctrl(struct regulator_dev *rdev, bool enable)
return 0;
}
+/**
+ * _regulator_enable_delay - a delay helper function
+ * @delay: time to delay in microseconds
+ *
+ * Delay for the requested amount of time as per the guidelines in:
+ *
+ * Documentation/timers/timers-howto.txt
+ *
+ * The assumption here is that regulators will never be enabled in
+ * atomic context and therefore sleeping functions can be used.
+ */
+static void _regulator_enable_delay(unsigned int delay)
+{
+ unsigned int ms = delay / 1000;
+ unsigned int us = delay % 1000;
+
+ if (ms > 0) {
+ /*
+ * For small enough values, handle super-millisecond
+ * delays in the usleep_range() call below.
+ */
+ if (ms < 20)
+ us += ms * 1000;
+ else
+ msleep(ms);
+ }
+
+ /*
+ * Give the scheduler some room to coalesce with any other
+ * wakeup sources. For delays shorter than 10 us, don't even
+ * bother setting up high-resolution timers and just busy-
+ * loop.
+ */
+ if (us >= 10)
+ usleep_range(us, us + 100);
+ else
+ udelay(us);
+}
+
static int _regulator_do_enable(struct regulator_dev *rdev)
{
int ret, delay;
@@ -1774,6 +1813,31 @@ static int _regulator_do_enable(struct regulator_dev *rdev)
trace_regulator_enable(rdev_get_name(rdev));
+ if (rdev->desc->off_on_delay) {
+ /* if needed, keep a distance of off_on_delay from last time
+ * this regulator was disabled.
+ */
+ unsigned long start_jiffy = jiffies;
+ unsigned long intended, max_delay, remaining;
+
+ max_delay = usecs_to_jiffies(rdev->desc->off_on_delay);
+ intended = rdev->last_off_jiffy + max_delay;
+
+ if (time_before(start_jiffy, intended)) {
+ /* calc remaining jiffies to deal with one-time
+ * timer wrapping.
+ * in case of multiple timer wrapping, either it can be
+ * detected by out-of-range remaining, or it cannot be
+ * detected and we gets a panelty of
+ * _regulator_enable_delay().
+ */
+ remaining = intended - start_jiffy;
+ if (remaining <= max_delay)
+ _regulator_enable_delay(
+ jiffies_to_usecs(remaining));
+ }
+ }
+
if (rdev->ena_pin) {
ret = regulator_ena_gpio_ctrl(rdev, true);
if (ret < 0)
@@ -1792,40 +1856,7 @@ static int _regulator_do_enable(struct regulator_dev *rdev)
* together. */
trace_regulator_enable_delay(rdev_get_name(rdev));
- /*
- * Delay for the requested amount of time as per the guidelines in:
- *
- * Documentation/timers/timers-howto.txt
- *
- * The assumption here is that regulators will never be enabled in
- * atomic context and therefore sleeping functions can be used.
- */
- if (delay) {
- unsigned int ms = delay / 1000;
- unsigned int us = delay % 1000;
-
- if (ms > 0) {
- /*
- * For small enough values, handle super-millisecond
- * delays in the usleep_range() call below.
- */
- if (ms < 20)
- us += ms * 1000;
- else
- msleep(ms);
- }
-
- /*
- * Give the scheduler some room to coalesce with any other
- * wakeup sources. For delays shorter than 10 us, don't even
- * bother setting up high-resolution timers and just busy-
- * loop.
- */
- if (us >= 10)
- usleep_range(us, us + 100);
- else
- udelay(us);
- }
+ _regulator_enable_delay(delay);
trace_regulator_enable_complete(rdev_get_name(rdev));
@@ -1919,6 +1950,12 @@ static int _regulator_do_disable(struct regulator_dev *rdev)
return ret;
}
+ /* cares about last_off_jiffy only if off_on_delay is required by
+ * device.
+ */
+ if (rdev->desc->off_on_delay)
+ rdev->last_off_jiffy = jiffies;
+
trace_regulator_disable_complete(rdev_get_name(rdev));
return 0;
@@ -2208,9 +2245,9 @@ EXPORT_SYMBOL_GPL(regulator_count_voltages);
*/
int regulator_list_voltage(struct regulator *regulator, unsigned selector)
{
- struct regulator_dev *rdev = regulator->rdev;
- struct regulator_ops *ops = rdev->desc->ops;
- int ret;
+ struct regulator_dev *rdev = regulator->rdev;
+ const struct regulator_ops *ops = rdev->desc->ops;
+ int ret;
if (rdev->desc->fixed_uV && rdev->desc->n_voltages == 1 && !selector)
return rdev->desc->fixed_uV;
@@ -2270,8 +2307,8 @@ int regulator_get_hardware_vsel_register(struct regulator *regulator,
unsigned *vsel_reg,
unsigned *vsel_mask)
{
- struct regulator_dev *rdev = regulator->rdev;
- struct regulator_ops *ops = rdev->desc->ops;
+ struct regulator_dev *rdev = regulator->rdev;
+ const struct regulator_ops *ops = rdev->desc->ops;
if (ops->set_voltage_sel != regulator_set_voltage_sel_regmap)
return -EOPNOTSUPP;
@@ -2297,8 +2334,8 @@ EXPORT_SYMBOL_GPL(regulator_get_hardware_vsel_register);
int regulator_list_hardware_vsel(struct regulator *regulator,
unsigned selector)
{
- struct regulator_dev *rdev = regulator->rdev;
- struct regulator_ops *ops = rdev->desc->ops;
+ struct regulator_dev *rdev = regulator->rdev;
+ const struct regulator_ops *ops = rdev->desc->ops;
if (selector >= rdev->desc->n_voltages)
return -EINVAL;
@@ -2572,8 +2609,8 @@ EXPORT_SYMBOL_GPL(regulator_set_voltage);
int regulator_set_voltage_time(struct regulator *regulator,
int old_uV, int new_uV)
{
- struct regulator_dev *rdev = regulator->rdev;
- struct regulator_ops *ops = rdev->desc->ops;
+ struct regulator_dev *rdev = regulator->rdev;
+ const struct regulator_ops *ops = rdev->desc->ops;
int old_sel = -1;
int new_sel = -1;
int voltage;
@@ -3336,9 +3373,9 @@ EXPORT_SYMBOL_GPL(regulator_mode_to_status);
*/
static int add_regulator_attributes(struct regulator_dev *rdev)
{
- struct device *dev = &rdev->dev;
- struct regulator_ops *ops = rdev->desc->ops;
- int status = 0;
+ struct device *dev = &rdev->dev;
+ const struct regulator_ops *ops = rdev->desc->ops;
+ int status = 0;
/* some attributes need specific methods to be displayed */
if ((ops->get_voltage && ops->get_voltage(rdev) >= 0) ||
@@ -3516,12 +3553,17 @@ regulator_register(const struct regulator_desc *regulator_desc,
return ERR_PTR(-EINVAL);
}
- init_data = config->init_data;
-
rdev = kzalloc(sizeof(struct regulator_dev), GFP_KERNEL);
if (rdev == NULL)
return ERR_PTR(-ENOMEM);
+ init_data = regulator_of_get_init_data(dev, regulator_desc,
+ &rdev->dev.of_node);
+ if (!init_data) {
+ init_data = config->init_data;
+ rdev->dev.of_node = of_node_get(config->of_node);
+ }
+
mutex_lock(&regulator_list_mutex);
mutex_init(&rdev->mutex);
@@ -3548,7 +3590,6 @@ regulator_register(const struct regulator_desc *regulator_desc,
/* register with sysfs */
rdev->dev.class = &regulator_class;
- rdev->dev.of_node = of_node_get(config->of_node);
rdev->dev.parent = dev;
dev_set_name(&rdev->dev, "regulator.%d",
atomic_inc_return(&regulator_no) - 1);
@@ -3905,7 +3946,7 @@ core_initcall(regulator_init);
static int __init regulator_init_complete(void)
{
struct regulator_dev *rdev;
- struct regulator_ops *ops;
+ const struct regulator_ops *ops;
struct regulation_constraints *c;
int enabled, ret;
diff --git a/drivers/regulator/fan53555.c b/drivers/regulator/fan53555.c
index 714fd9a89aa1..f8e4257aef92 100644
--- a/drivers/regulator/fan53555.c
+++ b/drivers/regulator/fan53555.c
@@ -18,6 +18,8 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/of_device.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/regmap.h>
@@ -50,6 +52,11 @@
#define FAN53555_NVOLTAGES 64 /* Numbers of voltages */
+enum fan53555_vendor {
+ FAN53555_VENDOR_FAIRCHILD = 0,
+ FAN53555_VENDOR_SILERGY,
+};
+
/* IC Type */
enum {
FAN53555_CHIP_ID_00 = 0,
@@ -60,7 +67,12 @@ enum {
FAN53555_CHIP_ID_05,
};
+enum {
+ SILERGY_SYR82X = 8,
+};
+
struct fan53555_device_info {
+ enum fan53555_vendor vendor;
struct regmap *regmap;
struct device *dev;
struct regulator_desc desc;
@@ -135,6 +147,38 @@ static unsigned int fan53555_get_mode(struct regulator_dev *rdev)
return REGULATOR_MODE_NORMAL;
}
+static int slew_rates[] = {
+ 64000,
+ 32000,
+ 16000,
+ 8000,
+ 4000,
+ 2000,
+ 1000,
+ 500,
+};
+
+static int fan53555_set_ramp(struct regulator_dev *rdev, int ramp)
+{
+ struct fan53555_device_info *di = rdev_get_drvdata(rdev);
+ int regval = -1, i;
+
+ for (i = 0; i < ARRAY_SIZE(slew_rates); i++) {
+ if (ramp <= slew_rates[i])
+ regval = i;
+ else
+ break;
+ }
+
+ if (regval < 0) {
+ dev_err(di->dev, "unsupported ramp value %d\n", ramp);
+ return -EINVAL;
+ }
+
+ return regmap_update_bits(di->regmap, FAN53555_CONTROL,
+ CTL_SLEW_MASK, regval << CTL_SLEW_SHIFT);
+}
+
static struct regulator_ops fan53555_regulator_ops = {
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
@@ -146,8 +190,50 @@ static struct regulator_ops fan53555_regulator_ops = {
.is_enabled = regulator_is_enabled_regmap,
.set_mode = fan53555_set_mode,
.get_mode = fan53555_get_mode,
+ .set_ramp_delay = fan53555_set_ramp,
};
+static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di)
+{
+ /* Init voltage range and step */
+ switch (di->chip_id) {
+ case FAN53555_CHIP_ID_00:
+ case FAN53555_CHIP_ID_01:
+ case FAN53555_CHIP_ID_03:
+ case FAN53555_CHIP_ID_05:
+ di->vsel_min = 600000;
+ di->vsel_step = 10000;
+ break;
+ case FAN53555_CHIP_ID_04:
+ di->vsel_min = 603000;
+ di->vsel_step = 12826;
+ break;
+ default:
+ dev_err(di->dev,
+ "Chip ID %d not supported!\n", di->chip_id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int fan53555_voltages_setup_silergy(struct fan53555_device_info *di)
+{
+ /* Init voltage range and step */
+ switch (di->chip_id) {
+ case SILERGY_SYR82X:
+ di->vsel_min = 712500;
+ di->vsel_step = 12500;
+ break;
+ default:
+ dev_err(di->dev,
+ "Chip ID %d not supported!\n", di->chip_id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
/* For 00,01,03,05 options:
* VOUT = 0.60V + NSELx * 10mV, from 0.60 to 1.23V.
* For 04 option:
@@ -156,7 +242,7 @@ static struct regulator_ops fan53555_regulator_ops = {
static int fan53555_device_setup(struct fan53555_device_info *di,
struct fan53555_platform_data *pdata)
{
- unsigned int reg, data, mask;
+ int ret = 0;
/* Setup voltage control register */
switch (pdata->sleep_vsel_id) {
@@ -172,33 +258,20 @@ static int fan53555_device_setup(struct fan53555_device_info *di,
dev_err(di->dev, "Invalid VSEL ID!\n");
return -EINVAL;
}
- /* Init voltage range and step */
- switch (di->chip_id) {
- case FAN53555_CHIP_ID_00:
- case FAN53555_CHIP_ID_01:
- case FAN53555_CHIP_ID_03:
- case FAN53555_CHIP_ID_05:
- di->vsel_min = 600000;
- di->vsel_step = 10000;
+
+ switch (di->vendor) {
+ case FAN53555_VENDOR_FAIRCHILD:
+ ret = fan53555_voltages_setup_fairchild(di);
break;
- case FAN53555_CHIP_ID_04:
- di->vsel_min = 603000;
- di->vsel_step = 12826;
+ case FAN53555_VENDOR_SILERGY:
+ ret = fan53555_voltages_setup_silergy(di);
break;
default:
- dev_err(di->dev,
- "Chip ID[%d]\n not supported!\n", di->chip_id);
+ dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
return -EINVAL;
}
- /* Init slew rate */
- if (pdata->slew_rate & 0x7)
- di->slew_rate = pdata->slew_rate;
- else
- di->slew_rate = FAN53555_SLEW_RATE_64MV;
- reg = FAN53555_CONTROL;
- data = di->slew_rate << CTL_SLEW_SHIFT;
- mask = CTL_SLEW_MASK;
- return regmap_update_bits(di->regmap, reg, mask, data);
+
+ return ret;
}
static int fan53555_regulator_register(struct fan53555_device_info *di,
@@ -207,6 +280,7 @@ static int fan53555_regulator_register(struct fan53555_device_info *di,
struct regulator_desc *rdesc = &di->desc;
rdesc->name = "fan53555-reg";
+ rdesc->supply_name = "vin";
rdesc->ops = &fan53555_regulator_ops;
rdesc->type = REGULATOR_VOLTAGE;
rdesc->n_voltages = FAN53555_NVOLTAGES;
@@ -227,9 +301,46 @@ static struct regmap_config fan53555_regmap_config = {
.val_bits = 8,
};
+static struct fan53555_platform_data *fan53555_parse_dt(struct device *dev,
+ struct device_node *np)
+{
+ struct fan53555_platform_data *pdata;
+ int ret;
+ u32 tmp;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+
+ pdata->regulator = of_get_regulator_init_data(dev, np);
+
+ ret = of_property_read_u32(np, "fcs,suspend-voltage-selector",
+ &tmp);
+ if (!ret)
+ pdata->sleep_vsel_id = tmp;
+
+ return pdata;
+}
+
+static const struct of_device_id fan53555_dt_ids[] = {
+ {
+ .compatible = "fcs,fan53555",
+ .data = (void *)FAN53555_VENDOR_FAIRCHILD
+ }, {
+ .compatible = "silergy,syr827",
+ .data = (void *)FAN53555_VENDOR_SILERGY,
+ }, {
+ .compatible = "silergy,syr828",
+ .data = (void *)FAN53555_VENDOR_SILERGY,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, fan53555_dt_ids);
+
static int fan53555_regulator_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct device_node *np = client->dev.of_node;
struct fan53555_device_info *di;
struct fan53555_platform_data *pdata;
struct regulator_config config = { };
@@ -237,6 +348,9 @@ static int fan53555_regulator_probe(struct i2c_client *client,
int ret;
pdata = dev_get_platdata(&client->dev);
+ if (!pdata)
+ pdata = fan53555_parse_dt(&client->dev, np);
+
if (!pdata || !pdata->regulator) {
dev_err(&client->dev, "Platform data not found!\n");
return -ENODEV;
@@ -247,13 +361,35 @@ static int fan53555_regulator_probe(struct i2c_client *client,
if (!di)
return -ENOMEM;
+ di->regulator = pdata->regulator;
+ if (client->dev.of_node) {
+ const struct of_device_id *match;
+
+ match = of_match_device(of_match_ptr(fan53555_dt_ids),
+ &client->dev);
+ if (!match)
+ return -ENODEV;
+
+ di->vendor = (unsigned long) match->data;
+ } else {
+ /* if no ramp constraint set, get the pdata ramp_delay */
+ if (!di->regulator->constraints.ramp_delay) {
+ int slew_idx = (pdata->slew_rate & 0x7)
+ ? pdata->slew_rate : 0;
+
+ di->regulator->constraints.ramp_delay
+ = slew_rates[slew_idx];
+ }
+
+ di->vendor = id->driver_data;
+ }
+
di->regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config);
if (IS_ERR(di->regmap)) {
dev_err(&client->dev, "Failed to allocate regmap!\n");
return PTR_ERR(di->regmap);
}
di->dev = &client->dev;
- di->regulator = pdata->regulator;
i2c_set_clientdata(client, di);
/* Get chip ID */
ret = regmap_read(di->regmap, FAN53555_ID1, &val);
@@ -282,6 +418,8 @@ static int fan53555_regulator_probe(struct i2c_client *client,
config.init_data = di->regulator;
config.regmap = di->regmap;
config.driver_data = di;
+ config.of_node = np;
+
ret = fan53555_regulator_register(di, &config);
if (ret < 0)
dev_err(&client->dev, "Failed to register regulator!\n");
@@ -290,13 +428,20 @@ static int fan53555_regulator_probe(struct i2c_client *client,
}
static const struct i2c_device_id fan53555_id[] = {
- {"fan53555", -1},
+ {
+ .name = "fan53555",
+ .driver_data = FAN53555_VENDOR_FAIRCHILD
+ }, {
+ .name = "syr82x",
+ .driver_data = FAN53555_VENDOR_SILERGY
+ },
{ },
};
static struct i2c_driver fan53555_regulator_driver = {
.driver = {
.name = "fan53555-regulator",
+ .of_match_table = of_match_ptr(fan53555_dt_ids),
},
.probe = fan53555_regulator_probe,
.id_table = fan53555_id,
diff --git a/drivers/regulator/hi6421-regulator.c b/drivers/regulator/hi6421-regulator.c
new file mode 100644
index 000000000000..156d0d1a55f1
--- /dev/null
+++ b/drivers/regulator/hi6421-regulator.c
@@ -0,0 +1,634 @@
+/*
+ * Device driver for regulators in Hi6421 IC
+ *
+ * Copyright (c) <2011-2014> HiSilicon Technologies Co., Ltd.
+ * http://www.hisilicon.com
+ * Copyright (c) <2013-2014> Linaro Ltd.
+ * http://www.linaro.org
+ *
+ * Author: Guodong Xu <guodong.xu@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/mfd/hi6421-pmic.h>
+
+/*
+ * struct hi6421_regulator_pdata - Hi6421 regulator data of platform device
+ * @lock: mutex to serialize regulator enable
+ */
+struct hi6421_regulator_pdata {
+ struct mutex lock;
+};
+
+/*
+ * struct hi6421_regulator_info - hi6421 regulator information
+ * @desc: regulator description
+ * @mode_mask: ECO mode bitmask of LDOs; for BUCKs, this masks sleep
+ * @eco_microamp: eco mode load upper limit (in uA), valid for LDOs only
+ */
+struct hi6421_regulator_info {
+ struct regulator_desc desc;
+ u8 mode_mask;
+ u32 eco_microamp;
+};
+
+/* HI6421 regulators */
+enum hi6421_regulator_id {
+ HI6421_LDO0,
+ HI6421_LDO1,
+ HI6421_LDO2,
+ HI6421_LDO3,
+ HI6421_LDO4,
+ HI6421_LDO5,
+ HI6421_LDO6,
+ HI6421_LDO7,
+ HI6421_LDO8,
+ HI6421_LDO9,
+ HI6421_LDO10,
+ HI6421_LDO11,
+ HI6421_LDO12,
+ HI6421_LDO13,
+ HI6421_LDO14,
+ HI6421_LDO15,
+ HI6421_LDO16,
+ HI6421_LDO17,
+ HI6421_LDO18,
+ HI6421_LDO19,
+ HI6421_LDO20,
+ HI6421_LDOAUDIO,
+ HI6421_BUCK0,
+ HI6421_BUCK1,
+ HI6421_BUCK2,
+ HI6421_BUCK3,
+ HI6421_BUCK4,
+ HI6421_BUCK5,
+ HI6421_NUM_REGULATORS,
+};
+
+#define HI6421_REGULATOR_OF_MATCH(_name, id) \
+{ \
+ .name = #_name, \
+ .driver_data = (void *) HI6421_##id, \
+}
+
+static struct of_regulator_match hi6421_regulator_match[] = {
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout0, LDO0),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout1, LDO1),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout2, LDO2),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout3, LDO3),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout4, LDO4),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout5, LDO5),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout6, LDO6),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout7, LDO7),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout8, LDO8),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout9, LDO9),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout10, LDO10),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout11, LDO11),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout12, LDO12),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout13, LDO13),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout14, LDO14),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout15, LDO15),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout16, LDO16),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout17, LDO17),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout18, LDO18),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout19, LDO19),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout20, LDO20),
+ HI6421_REGULATOR_OF_MATCH(hi6421_vout_audio, LDOAUDIO),
+ HI6421_REGULATOR_OF_MATCH(hi6421_buck0, BUCK0),
+ HI6421_REGULATOR_OF_MATCH(hi6421_buck1, BUCK1),
+ HI6421_REGULATOR_OF_MATCH(hi6421_buck2, BUCK2),
+ HI6421_REGULATOR_OF_MATCH(hi6421_buck3, BUCK3),
+ HI6421_REGULATOR_OF_MATCH(hi6421_buck4, BUCK4),
+ HI6421_REGULATOR_OF_MATCH(hi6421_buck5, BUCK5),
+};
+
+/* LDO 0, 4~7, 9~14, 16~20 have same voltage table. */
+static const unsigned int ldo_0_voltages[] = {
+ 1500000, 1800000, 2400000, 2500000,
+ 2600000, 2700000, 2850000, 3000000,
+};
+
+/* LDO 8, 15 have same voltage table. */
+static const unsigned int ldo_8_voltages[] = {
+ 1500000, 1800000, 2400000, 2600000,
+ 2700000, 2850000, 3000000, 3300000,
+};
+
+/* Ranges are sorted in ascending order. */
+static const struct regulator_linear_range ldo_audio_volt_range[] = {
+ REGULATOR_LINEAR_RANGE(2800000, 0, 3, 50000),
+ REGULATOR_LINEAR_RANGE(3000000, 4, 7, 100000),
+};
+
+static const unsigned int buck_3_voltages[] = {
+ 950000, 1050000, 1100000, 1117000,
+ 1134000, 1150000, 1167000, 1200000,
+};
+
+static const unsigned int buck_4_voltages[] = {
+ 1150000, 1200000, 1250000, 1350000,
+ 1700000, 1800000, 1900000, 2000000,
+};
+
+static const unsigned int buck_5_voltages[] = {
+ 1150000, 1200000, 1250000, 1350000,
+ 1600000, 1700000, 1800000, 1900000,
+};
+
+static const struct regulator_ops hi6421_ldo_ops;
+static const struct regulator_ops hi6421_ldo_linear_ops;
+static const struct regulator_ops hi6421_ldo_linear_range_ops;
+static const struct regulator_ops hi6421_buck012_ops;
+static const struct regulator_ops hi6421_buck345_ops;
+
+#define HI6421_LDO_ENABLE_TIME (350)
+/*
+ * _id - LDO id name string
+ * v_table - voltage table
+ * vreg - voltage select register
+ * vmask - voltage select mask
+ * ereg - enable register
+ * emask - enable mask
+ * odelay - off/on delay time in uS
+ * ecomask - eco mode mask
+ * ecoamp - eco mode load uppler limit in uA
+ */
+#define HI6421_LDO(_id, v_table, vreg, vmask, ereg, emask, \
+ odelay, ecomask, ecoamp) \
+ [HI6421_##_id] = { \
+ .desc = { \
+ .name = #_id, \
+ .ops = &hi6421_ldo_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = HI6421_##_id, \
+ .owner = THIS_MODULE, \
+ .n_voltages = ARRAY_SIZE(v_table), \
+ .volt_table = v_table, \
+ .vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \
+ .vsel_mask = vmask, \
+ .enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \
+ .enable_mask = emask, \
+ .enable_time = HI6421_LDO_ENABLE_TIME, \
+ .off_on_delay = odelay, \
+ }, \
+ .mode_mask = ecomask, \
+ .eco_microamp = ecoamp, \
+ }
+
+/* HI6421 LDO1~3 are linear voltage regulators at fixed uV_step
+ *
+ * _id - LDO id name string
+ * _min_uV - minimum voltage supported in uV
+ * n_volt - number of votages available
+ * vstep - voltage increase in each linear step in uV
+ * vreg - voltage select register
+ * vmask - voltage select mask
+ * ereg - enable register
+ * emask - enable mask
+ * odelay - off/on delay time in uS
+ * ecomask - eco mode mask
+ * ecoamp - eco mode load uppler limit in uA
+ */
+#define HI6421_LDO_LINEAR(_id, _min_uV, n_volt, vstep, vreg, vmask, \
+ ereg, emask, odelay, ecomask, ecoamp) \
+ [HI6421_##_id] = { \
+ .desc = { \
+ .name = #_id, \
+ .ops = &hi6421_ldo_linear_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = HI6421_##_id, \
+ .owner = THIS_MODULE, \
+ .min_uV = _min_uV, \
+ .n_voltages = n_volt, \
+ .uV_step = vstep, \
+ .vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \
+ .vsel_mask = vmask, \
+ .enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \
+ .enable_mask = emask, \
+ .enable_time = HI6421_LDO_ENABLE_TIME, \
+ .off_on_delay = odelay, \
+ }, \
+ .mode_mask = ecomask, \
+ .eco_microamp = ecoamp, \
+ }
+
+/* HI6421 LDOAUDIO is a linear voltage regulator with two 4-step ranges
+ *
+ * _id - LDO id name string
+ * n_volt - number of votages available
+ * volt_ranges - array of regulator_linear_range
+ * vstep - voltage increase in each linear step in uV
+ * vreg - voltage select register
+ * vmask - voltage select mask
+ * ereg - enable register
+ * emask - enable mask
+ * odelay - off/on delay time in uS
+ * ecomask - eco mode mask
+ * ecoamp - eco mode load uppler limit in uA
+ */
+#define HI6421_LDO_LINEAR_RANGE(_id, n_volt, volt_ranges, vreg, vmask, \
+ ereg, emask, odelay, ecomask, ecoamp) \
+ [HI6421_##_id] = { \
+ .desc = { \
+ .name = #_id, \
+ .ops = &hi6421_ldo_linear_range_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = HI6421_##_id, \
+ .owner = THIS_MODULE, \
+ .n_voltages = n_volt, \
+ .linear_ranges = volt_ranges, \
+ .n_linear_ranges = ARRAY_SIZE(volt_ranges), \
+ .vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \
+ .vsel_mask = vmask, \
+ .enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \
+ .enable_mask = emask, \
+ .enable_time = HI6421_LDO_ENABLE_TIME, \
+ .off_on_delay = odelay, \
+ }, \
+ .mode_mask = ecomask, \
+ .eco_microamp = ecoamp, \
+ }
+
+/* HI6421 BUCK0/1/2 are linear voltage regulators at fixed uV_step
+ *
+ * _id - BUCK0/1/2 id name string
+ * vreg - voltage select register
+ * vmask - voltage select mask
+ * ereg - enable register
+ * emask - enable mask
+ * sleepmask - mask of sleep mode
+ * etime - enable time
+ * odelay - off/on delay time in uS
+ */
+#define HI6421_BUCK012(_id, vreg, vmask, ereg, emask, sleepmask, \
+ etime, odelay) \
+ [HI6421_##_id] = { \
+ .desc = { \
+ .name = #_id, \
+ .ops = &hi6421_buck012_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = HI6421_##_id, \
+ .owner = THIS_MODULE, \
+ .min_uV = 700000, \
+ .n_voltages = 128, \
+ .uV_step = 7086, \
+ .vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \
+ .vsel_mask = vmask, \
+ .enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \
+ .enable_mask = emask, \
+ .enable_time = etime, \
+ .off_on_delay = odelay, \
+ }, \
+ .mode_mask = sleepmask, \
+ }
+
+/* HI6421 BUCK3/4/5 share similar configurations as LDOs, with exception
+ * that it supports SLEEP mode, so has different .ops.
+ *
+ * _id - LDO id name string
+ * v_table - voltage table
+ * vreg - voltage select register
+ * vmask - voltage select mask
+ * ereg - enable register
+ * emask - enable mask
+ * odelay - off/on delay time in uS
+ * sleepmask - mask of sleep mode
+ */
+#define HI6421_BUCK345(_id, v_table, vreg, vmask, ereg, emask, \
+ odelay, sleepmask) \
+ [HI6421_##_id] = { \
+ .desc = { \
+ .name = #_id, \
+ .ops = &hi6421_buck345_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = HI6421_##_id, \
+ .owner = THIS_MODULE, \
+ .n_voltages = ARRAY_SIZE(v_table), \
+ .volt_table = v_table, \
+ .vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \
+ .vsel_mask = vmask, \
+ .enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \
+ .enable_mask = emask, \
+ .enable_time = HI6421_LDO_ENABLE_TIME, \
+ .off_on_delay = odelay, \
+ }, \
+ .mode_mask = sleepmask, \
+ }
+
+/* HI6421 regulator information */
+static struct hi6421_regulator_info
+ hi6421_regulator_info[HI6421_NUM_REGULATORS] = {
+ HI6421_LDO(LDO0, ldo_0_voltages, 0x20, 0x07, 0x20, 0x10,
+ 10000, 0x20, 8000),
+ HI6421_LDO_LINEAR(LDO1, 1700000, 4, 100000, 0x21, 0x03, 0x21, 0x10,
+ 10000, 0x20, 5000),
+ HI6421_LDO_LINEAR(LDO2, 1050000, 8, 50000, 0x22, 0x07, 0x22, 0x10,
+ 20000, 0x20, 8000),
+ HI6421_LDO_LINEAR(LDO3, 1050000, 8, 50000, 0x23, 0x07, 0x23, 0x10,
+ 20000, 0x20, 8000),
+ HI6421_LDO(LDO4, ldo_0_voltages, 0x24, 0x07, 0x24, 0x10,
+ 20000, 0x20, 8000),
+ HI6421_LDO(LDO5, ldo_0_voltages, 0x25, 0x07, 0x25, 0x10,
+ 20000, 0x20, 8000),
+ HI6421_LDO(LDO6, ldo_0_voltages, 0x26, 0x07, 0x26, 0x10,
+ 20000, 0x20, 8000),
+ HI6421_LDO(LDO7, ldo_0_voltages, 0x27, 0x07, 0x27, 0x10,
+ 20000, 0x20, 5000),
+ HI6421_LDO(LDO8, ldo_8_voltages, 0x28, 0x07, 0x28, 0x10,
+ 20000, 0x20, 8000),
+ HI6421_LDO(LDO9, ldo_0_voltages, 0x29, 0x07, 0x29, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO10, ldo_0_voltages, 0x2a, 0x07, 0x2a, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO11, ldo_0_voltages, 0x2b, 0x07, 0x2b, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO12, ldo_0_voltages, 0x2c, 0x07, 0x2c, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO13, ldo_0_voltages, 0x2d, 0x07, 0x2d, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO14, ldo_0_voltages, 0x2e, 0x07, 0x2e, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO15, ldo_8_voltages, 0x2f, 0x07, 0x2f, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO16, ldo_0_voltages, 0x30, 0x07, 0x30, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO17, ldo_0_voltages, 0x31, 0x07, 0x31, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO18, ldo_0_voltages, 0x32, 0x07, 0x32, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO19, ldo_0_voltages, 0x33, 0x07, 0x33, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO(LDO20, ldo_0_voltages, 0x34, 0x07, 0x34, 0x10,
+ 40000, 0x20, 8000),
+ HI6421_LDO_LINEAR_RANGE(LDOAUDIO, 8, ldo_audio_volt_range, 0x36,
+ 0x70, 0x36, 0x01, 40000, 0x02, 5000),
+ HI6421_BUCK012(BUCK0, 0x0d, 0x7f, 0x0c, 0x01, 0x10, 400, 20000),
+ HI6421_BUCK012(BUCK1, 0x0f, 0x7f, 0x0e, 0x01, 0x10, 400, 20000),
+ HI6421_BUCK012(BUCK2, 0x11, 0x7f, 0x10, 0x01, 0x10, 350, 100),
+ HI6421_BUCK345(BUCK3, buck_3_voltages, 0x13, 0x07, 0x12, 0x01,
+ 20000, 0x10),
+ HI6421_BUCK345(BUCK4, buck_4_voltages, 0x15, 0x07, 0x14, 0x01,
+ 20000, 0x10),
+ HI6421_BUCK345(BUCK5, buck_5_voltages, 0x17, 0x07, 0x16, 0x01,
+ 20000, 0x10),
+};
+
+static int hi6421_regulator_enable(struct regulator_dev *rdev)
+{
+ struct hi6421_regulator_pdata *pdata;
+
+ pdata = dev_get_drvdata(rdev->dev.parent);
+ /* hi6421 spec requires regulator enablement must be serialized:
+ * - Because when BUCK, LDO switching from off to on, it will have
+ * a huge instantaneous current; so you can not turn on two or
+ * more LDO or BUCKs simultaneously, or it may burn the chip.
+ */
+ mutex_lock(&pdata->lock);
+
+ /* call regulator regmap helper */
+ regulator_enable_regmap(rdev);
+
+ mutex_unlock(&pdata->lock);
+ return 0;
+}
+
+static unsigned int hi6421_regulator_ldo_get_mode(struct regulator_dev *rdev)
+{
+ struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
+ u32 reg_val;
+
+ regmap_read(rdev->regmap, rdev->desc->enable_reg, &reg_val);
+ if (reg_val & info->mode_mask)
+ return REGULATOR_MODE_IDLE;
+
+ return REGULATOR_MODE_NORMAL;
+}
+
+static unsigned int hi6421_regulator_buck_get_mode(struct regulator_dev *rdev)
+{
+ struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
+ u32 reg_val;
+
+ regmap_read(rdev->regmap, rdev->desc->enable_reg, &reg_val);
+ if (reg_val & info->mode_mask)
+ return REGULATOR_MODE_STANDBY;
+
+ return REGULATOR_MODE_NORMAL;
+}
+
+static int hi6421_regulator_ldo_set_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
+ u32 new_mode;
+
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ new_mode = 0;
+ break;
+ case REGULATOR_MODE_IDLE:
+ new_mode = info->mode_mask;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* set mode */
+ regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+ info->mode_mask, new_mode);
+
+ return 0;
+}
+
+static int hi6421_regulator_buck_set_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
+ u32 new_mode;
+
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ new_mode = 0;
+ break;
+ case REGULATOR_MODE_STANDBY:
+ new_mode = info->mode_mask;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* set mode */
+ regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+ info->mode_mask, new_mode);
+
+ return 0;
+}
+
+unsigned int hi6421_regulator_ldo_get_optimum_mode(struct regulator_dev *rdev,
+ int input_uV, int output_uV, int load_uA)
+{
+ struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
+
+ if (load_uA > info->eco_microamp)
+ return REGULATOR_MODE_NORMAL;
+
+ return REGULATOR_MODE_IDLE;
+}
+
+static const struct regulator_ops hi6421_ldo_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = hi6421_regulator_enable,
+ .disable = regulator_disable_regmap,
+ .list_voltage = regulator_list_voltage_table,
+ .map_voltage = regulator_map_voltage_ascend,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_mode = hi6421_regulator_ldo_get_mode,
+ .set_mode = hi6421_regulator_ldo_set_mode,
+ .get_optimum_mode = hi6421_regulator_ldo_get_optimum_mode,
+};
+
+static const struct regulator_ops hi6421_ldo_linear_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = hi6421_regulator_enable,
+ .disable = regulator_disable_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_mode = hi6421_regulator_ldo_get_mode,
+ .set_mode = hi6421_regulator_ldo_set_mode,
+ .get_optimum_mode = hi6421_regulator_ldo_get_optimum_mode,
+};
+
+static const struct regulator_ops hi6421_ldo_linear_range_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = hi6421_regulator_enable,
+ .disable = regulator_disable_regmap,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_mode = hi6421_regulator_ldo_get_mode,
+ .set_mode = hi6421_regulator_ldo_set_mode,
+ .get_optimum_mode = hi6421_regulator_ldo_get_optimum_mode,
+};
+
+static const struct regulator_ops hi6421_buck012_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = hi6421_regulator_enable,
+ .disable = regulator_disable_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_mode = hi6421_regulator_buck_get_mode,
+ .set_mode = hi6421_regulator_buck_set_mode,
+};
+
+static const struct regulator_ops hi6421_buck345_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = hi6421_regulator_enable,
+ .disable = regulator_disable_regmap,
+ .list_voltage = regulator_list_voltage_table,
+ .map_voltage = regulator_map_voltage_ascend,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_mode = hi6421_regulator_buck_get_mode,
+ .set_mode = hi6421_regulator_buck_set_mode,
+};
+
+static int hi6421_regulator_register(struct platform_device *pdev,
+ struct regmap *rmap,
+ struct regulator_init_data *init_data,
+ int id, struct device_node *np)
+{
+ struct hi6421_regulator_info *info = NULL;
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+
+ /* assign per-regulator data */
+ info = &hi6421_regulator_info[id];
+
+ config.dev = &pdev->dev;
+ config.init_data = init_data;
+ config.driver_data = info;
+ config.regmap = rmap;
+ config.of_node = np;
+
+ /* register regulator with framework */
+ rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "failed to register regulator %s\n",
+ info->desc.name);
+ return PTR_ERR(rdev);
+ }
+
+ return 0;
+}
+
+static int hi6421_regulator_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np;
+ struct hi6421_pmic *pmic;
+ struct hi6421_regulator_pdata *pdata;
+ int i, ret = 0;
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+ mutex_init(&pdata->lock);
+ platform_set_drvdata(pdev, pdata);
+
+ np = of_get_child_by_name(dev->parent->of_node, "regulators");
+ if (!np)
+ return -ENODEV;
+
+ ret = of_regulator_match(dev, np,
+ hi6421_regulator_match,
+ ARRAY_SIZE(hi6421_regulator_match));
+ of_node_put(np);
+ if (ret < 0) {
+ dev_err(dev, "Error parsing regulator init data: %d\n", ret);
+ return ret;
+ }
+
+ pmic = dev_get_drvdata(dev->parent);
+
+ for (i = 0; i < ARRAY_SIZE(hi6421_regulator_info); i++) {
+ ret = hi6421_regulator_register(pdev, pmic->regmap,
+ hi6421_regulator_match[i].init_data, i,
+ hi6421_regulator_match[i].of_node);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct platform_driver hi6421_regulator_driver = {
+ .driver = {
+ .name = "hi6421-regulator",
+ .owner = THIS_MODULE,
+ },
+ .probe = hi6421_regulator_probe,
+};
+module_platform_driver(hi6421_regulator_driver);
+
+MODULE_AUTHOR("Guodong Xu <guodong.xu@linaro.org>");
+MODULE_DESCRIPTION("Hi6421 regulator driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/regulator/internal.h b/drivers/regulator/internal.h
index 84bbda10c396..a6043ad32ead 100644
--- a/drivers/regulator/internal.h
+++ b/drivers/regulator/internal.h
@@ -35,4 +35,8 @@ struct regulator {
struct dentry *debugfs;
};
+struct regulator_init_data *regulator_of_get_init_data(struct device *dev,
+ const struct regulator_desc *desc,
+ struct device_node **node);
+
#endif
diff --git a/drivers/regulator/isl9305.c b/drivers/regulator/isl9305.c
new file mode 100644
index 000000000000..92fefd98da58
--- /dev/null
+++ b/drivers/regulator/isl9305.c
@@ -0,0 +1,207 @@
+/*
+ * isl9305 - Intersil ISL9305 DCDC regulator
+ *
+ * Copyright 2014 Linaro Ltd
+ *
+ * Author: Mark Brown <broonie@kernel.org>
+ *
+ * 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/err.h>
+#include <linux/i2c.h>
+#include <linux/of.h>
+#include <linux/platform_data/isl9305.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/slab.h>
+
+/*
+ * Registers
+ */
+#define ISL9305_DCD1OUT 0x0
+#define ISL9305_DCD2OUT 0x1
+#define ISL9305_LDO1OUT 0x2
+#define ISL9305_LDO2OUT 0x3
+#define ISL9305_DCD_PARAMETER 0x4
+#define ISL9305_SYSTEM_PARAMETER 0x5
+#define ISL9305_DCD_SRCTL 0x6
+
+#define ISL9305_MAX_REG ISL9305_DCD_SRCTL
+
+/*
+ * DCD_PARAMETER
+ */
+#define ISL9305_DCD_PHASE 0x40
+#define ISL9305_DCD2_ULTRA 0x20
+#define ISL9305_DCD1_ULTRA 0x10
+#define ISL9305_DCD2_BLD 0x08
+#define ISL9305_DCD1_BLD 0x04
+#define ISL9305_DCD2_MODE 0x02
+#define ISL9305_DCD1_MODE 0x01
+
+/*
+ * SYSTEM_PARAMETER
+ */
+#define ISL9305_I2C_EN 0x40
+#define ISL9305_DCDPOR_MASK 0x30
+#define ISL9305_LDO2_EN 0x08
+#define ISL9305_LDO1_EN 0x04
+#define ISL9305_DCD2_EN 0x02
+#define ISL9305_DCD1_EN 0x01
+
+/*
+ * DCD_SRCTL
+ */
+#define ISL9305_DCD2SR_MASK 0xc0
+#define ISL9305_DCD1SR_MASK 0x07
+
+static const struct regulator_ops isl9305_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+};
+
+static const struct regulator_desc isl9305_regulators[] = {
+ [ISL9305_DCD1] = {
+ .name = "DCD1",
+ .of_match = of_match_ptr("dcd1"),
+ .regulators_node = of_match_ptr("regulators"),
+ .n_voltages = 0x70,
+ .min_uV = 825000,
+ .uV_step = 25000,
+ .vsel_reg = ISL9305_DCD1OUT,
+ .vsel_mask = 0x7f,
+ .enable_reg = ISL9305_SYSTEM_PARAMETER,
+ .enable_mask = ISL9305_DCD1_EN,
+ .supply_name = "VINDCD1",
+ .ops = &isl9305_ops,
+ },
+ [ISL9305_DCD2] = {
+ .name = "DCD2",
+ .of_match = of_match_ptr("dcd2"),
+ .regulators_node = of_match_ptr("regulators"),
+ .n_voltages = 0x70,
+ .min_uV = 825000,
+ .uV_step = 25000,
+ .vsel_reg = ISL9305_DCD2OUT,
+ .vsel_mask = 0x7f,
+ .enable_reg = ISL9305_SYSTEM_PARAMETER,
+ .enable_mask = ISL9305_DCD2_EN,
+ .supply_name = "VINDCD2",
+ .ops = &isl9305_ops,
+ },
+ [ISL9305_LDO1] = {
+ .name = "LDO1",
+ .of_match = of_match_ptr("ldo1"),
+ .regulators_node = of_match_ptr("regulators"),
+ .n_voltages = 0x37,
+ .min_uV = 900000,
+ .uV_step = 50000,
+ .vsel_reg = ISL9305_LDO1OUT,
+ .vsel_mask = 0x3f,
+ .enable_reg = ISL9305_SYSTEM_PARAMETER,
+ .enable_mask = ISL9305_LDO1_EN,
+ .supply_name = "VINLDO1",
+ .ops = &isl9305_ops,
+ },
+ [ISL9305_LDO2] = {
+ .name = "LDO2",
+ .of_match = of_match_ptr("ldo2"),
+ .regulators_node = of_match_ptr("regulators"),
+ .n_voltages = 0x37,
+ .min_uV = 900000,
+ .uV_step = 50000,
+ .vsel_reg = ISL9305_LDO2OUT,
+ .vsel_mask = 0x3f,
+ .enable_reg = ISL9305_SYSTEM_PARAMETER,
+ .enable_mask = ISL9305_LDO2_EN,
+ .supply_name = "VINLDO2",
+ .ops = &isl9305_ops,
+ },
+};
+
+static const struct regmap_config isl9305_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = ISL9305_MAX_REG,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int isl9305_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct regulator_config config = { };
+ struct isl9305_pdata *pdata = i2c->dev.platform_data;
+ struct regulator_dev *rdev;
+ struct regmap *regmap;
+ int i, ret;
+
+ regmap = devm_regmap_init_i2c(i2c, &isl9305_regmap);
+ if (IS_ERR(regmap)) {
+ ret = PTR_ERR(regmap);
+ dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
+ return ret;
+ }
+
+ config.dev = &i2c->dev;
+
+ for (i = 0; i < ARRAY_SIZE(isl9305_regulators); i++) {
+ if (pdata)
+ config.init_data = pdata->init_data[i];
+ else
+ config.init_data = NULL;
+
+ rdev = devm_regulator_register(&i2c->dev,
+ &isl9305_regulators[i],
+ &config);
+ if (IS_ERR(rdev)) {
+ ret = PTR_ERR(rdev);
+ dev_err(&i2c->dev, "Failed to register %s: %d\n",
+ isl9305_regulators[i].name, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id isl9305_dt_ids[] = {
+ { .compatible = "isl,isl9305" },
+ { .compatible = "isl,isl9305h" },
+ {},
+};
+#endif
+
+static const struct i2c_device_id isl9305_i2c_id[] = {
+ { "isl9305", },
+ { "isl9305h", },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, isl9305_i2c_id);
+
+static struct i2c_driver isl9305_regulator_driver = {
+ .driver = {
+ .name = "isl9305",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(isl9305_dt_ids),
+ },
+ .probe = isl9305_i2c_probe,
+ .id_table = isl9305_i2c_id,
+};
+
+module_i2c_driver(isl9305_regulator_driver);
+
+MODULE_AUTHOR("Mark Brown");
+MODULE_DESCRIPTION("Intersil ISL9305 DCDC regulator");
+MODULE_LICENSE("GPL");
diff --git a/drivers/regulator/mc13892-regulator.c b/drivers/regulator/mc13892-regulator.c
index f374fa57220f..793b662a1967 100644
--- a/drivers/regulator/mc13892-regulator.c
+++ b/drivers/regulator/mc13892-regulator.c
@@ -526,6 +526,7 @@ static unsigned int mc13892_vcam_get_mode(struct regulator_dev *rdev)
return REGULATOR_MODE_NORMAL;
}
+static struct regulator_ops mc13892_vcam_ops;
static int mc13892_regulator_probe(struct platform_device *pdev)
{
@@ -582,10 +583,12 @@ static int mc13892_regulator_probe(struct platform_device *pdev)
}
mc13xxx_unlock(mc13892);
- mc13892_regulators[MC13892_VCAM].desc.ops->set_mode
- = mc13892_vcam_set_mode;
- mc13892_regulators[MC13892_VCAM].desc.ops->get_mode
- = mc13892_vcam_get_mode;
+ /* update mc13892_vcam ops */
+ memcpy(&mc13892_vcam_ops, mc13892_regulators[MC13892_VCAM].desc.ops,
+ sizeof(struct regulator_ops));
+ mc13892_vcam_ops.set_mode = mc13892_vcam_set_mode,
+ mc13892_vcam_ops.get_mode = mc13892_vcam_get_mode,
+ mc13892_regulators[MC13892_VCAM].desc.ops = &mc13892_vcam_ops;
mc13xxx_data = mc13xxx_parse_regulators_dt(pdev, mc13892_regulators,
ARRAY_SIZE(mc13892_regulators));
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index ee5e67bc8d5b..7a51814abdc5 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -14,8 +14,11 @@
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/regulator/machine.h>
+#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
+#include "internal.h"
+
static void of_get_regulation_constraints(struct device_node *np,
struct regulator_init_data **init_data)
{
@@ -189,3 +192,51 @@ int of_regulator_match(struct device *dev, struct device_node *node,
return count;
}
EXPORT_SYMBOL_GPL(of_regulator_match);
+
+struct regulator_init_data *regulator_of_get_init_data(struct device *dev,
+ const struct regulator_desc *desc,
+ struct device_node **node)
+{
+ struct device_node *search, *child;
+ struct regulator_init_data *init_data = NULL;
+ const char *name;
+
+ if (!dev->of_node || !desc->of_match)
+ return NULL;
+
+ if (desc->regulators_node)
+ search = of_get_child_by_name(dev->of_node,
+ desc->regulators_node);
+ else
+ search = dev->of_node;
+
+ if (!search) {
+ dev_err(dev, "Failed to find regulator container node\n");
+ return NULL;
+ }
+
+ for_each_child_of_node(search, child) {
+ name = of_get_property(child, "regulator-compatible", NULL);
+ if (!name)
+ name = child->name;
+
+ if (strcmp(desc->of_match, name))
+ continue;
+
+ init_data = of_get_regulator_init_data(dev, child);
+ if (!init_data) {
+ dev_err(dev,
+ "failed to parse DT for regulator %s\n",
+ child->name);
+ break;
+ }
+
+ of_node_get(child);
+ *node = child;
+ break;
+ }
+
+ of_node_put(search);
+
+ return init_data;
+}
diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c
new file mode 100644
index 000000000000..d3f55eaea058
--- /dev/null
+++ b/drivers/regulator/pwm-regulator.c
@@ -0,0 +1,197 @@
+/*
+ * Regulator driver for PWM Regulators
+ *
+ * Copyright (C) 2014 - STMicroelectronics Inc.
+ *
+ * Author: Lee Jones <lee.jones@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/pwm.h>
+
+struct pwm_regulator_data {
+ struct regulator_desc desc;
+ struct pwm_voltages *duty_cycle_table;
+ struct pwm_device *pwm;
+ bool enabled;
+ int state;
+};
+
+struct pwm_voltages {
+ unsigned int uV;
+ unsigned int dutycycle;
+};
+
+static int pwm_regulator_get_voltage_sel(struct regulator_dev *dev)
+{
+ struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
+
+ return drvdata->state;
+}
+
+static int pwm_regulator_set_voltage_sel(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
+ unsigned int pwm_reg_period;
+ int dutycycle;
+ int ret;
+
+ pwm_reg_period = pwm_get_period(drvdata->pwm);
+
+ dutycycle = (pwm_reg_period *
+ drvdata->duty_cycle_table[selector].dutycycle) / 100;
+
+ ret = pwm_config(drvdata->pwm, dutycycle, pwm_reg_period);
+ if (ret) {
+ dev_err(&dev->dev, "Failed to configure PWM\n");
+ return ret;
+ }
+
+ drvdata->state = selector;
+
+ if (!drvdata->enabled) {
+ ret = pwm_enable(drvdata->pwm);
+ if (ret) {
+ dev_err(&dev->dev, "Failed to enable PWM\n");
+ return ret;
+ }
+ drvdata->enabled = true;
+ }
+
+ return 0;
+}
+
+static int pwm_regulator_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
+
+ if (selector >= drvdata->desc.n_voltages)
+ return -EINVAL;
+
+ return drvdata->duty_cycle_table[selector].uV;
+}
+
+static struct regulator_ops pwm_regulator_voltage_ops = {
+ .set_voltage_sel = pwm_regulator_set_voltage_sel,
+ .get_voltage_sel = pwm_regulator_get_voltage_sel,
+ .list_voltage = pwm_regulator_list_voltage,
+ .map_voltage = regulator_map_voltage_iterate,
+};
+
+static const struct regulator_desc pwm_regulator_desc = {
+ .name = "pwm-regulator",
+ .ops = &pwm_regulator_voltage_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .supply_name = "pwm",
+};
+
+static int pwm_regulator_probe(struct platform_device *pdev)
+{
+ struct pwm_regulator_data *drvdata;
+ struct property *prop;
+ struct regulator_dev *regulator;
+ struct regulator_config config = { };
+ struct device_node *np = pdev->dev.of_node;
+ int length, ret;
+
+ if (!np) {
+ dev_err(&pdev->dev, "Device Tree node missing\n");
+ return -EINVAL;
+ }
+
+ drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
+ if (!drvdata)
+ return -ENOMEM;
+
+ memcpy(&drvdata->desc, &pwm_regulator_desc, sizeof(pwm_regulator_desc));
+
+ /* determine the number of voltage-table */
+ prop = of_find_property(np, "voltage-table", &length);
+ if (!prop) {
+ dev_err(&pdev->dev, "No voltage-table\n");
+ return -EINVAL;
+ }
+
+ if ((length < sizeof(*drvdata->duty_cycle_table)) ||
+ (length % sizeof(*drvdata->duty_cycle_table))) {
+ dev_err(&pdev->dev, "voltage-table length(%d) is invalid\n",
+ length);
+ return -EINVAL;
+ }
+
+ drvdata->desc.n_voltages = length / sizeof(*drvdata->duty_cycle_table);
+
+ drvdata->duty_cycle_table = devm_kzalloc(&pdev->dev,
+ length, GFP_KERNEL);
+ if (!drvdata->duty_cycle_table)
+ return -ENOMEM;
+
+ /* read voltage table from DT property */
+ ret = of_property_read_u32_array(np, "voltage-table",
+ (u32 *)drvdata->duty_cycle_table,
+ length / sizeof(u32));
+ if (ret < 0) {
+ dev_err(&pdev->dev, "read voltage-table failed\n");
+ return ret;
+ }
+
+ config.init_data = of_get_regulator_init_data(&pdev->dev, np);
+ if (!config.init_data)
+ return -ENOMEM;
+
+ config.of_node = np;
+ config.dev = &pdev->dev;
+ config.driver_data = drvdata;
+
+ drvdata->pwm = devm_pwm_get(&pdev->dev, NULL);
+ if (IS_ERR(drvdata->pwm)) {
+ dev_err(&pdev->dev, "Failed to get PWM\n");
+ return PTR_ERR(drvdata->pwm);
+ }
+
+ regulator = devm_regulator_register(&pdev->dev,
+ &drvdata->desc, &config);
+ if (IS_ERR(regulator)) {
+ dev_err(&pdev->dev, "Failed to register regulator %s\n",
+ drvdata->desc.name);
+ return PTR_ERR(regulator);
+ }
+
+ return 0;
+}
+
+static const struct of_device_id pwm_of_match[] = {
+ { .compatible = "pwm-regulator" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, pwm_of_match);
+
+static struct platform_driver pwm_regulator_driver = {
+ .driver = {
+ .name = "pwm-regulator",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(pwm_of_match),
+ },
+ .probe = pwm_regulator_probe,
+};
+
+module_platform_driver(pwm_regulator_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Lee Jones <lee.jones@linaro.org>");
+MODULE_DESCRIPTION("PWM Regulator Driver");
+MODULE_ALIAS("platform:pwm-regulator");
diff --git a/drivers/regulator/qcom_rpm-regulator.c b/drivers/regulator/qcom_rpm-regulator.c
new file mode 100644
index 000000000000..b55cd5b50ebe
--- /dev/null
+++ b/drivers/regulator/qcom_rpm-regulator.c
@@ -0,0 +1,798 @@
+/*
+ * Copyright (c) 2014, Sony Mobile Communications AB.
+ * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/mfd/qcom_rpm.h>
+
+#include <dt-bindings/mfd/qcom-rpm.h>
+
+#define MAX_REQUEST_LEN 2
+
+struct request_member {
+ int word;
+ unsigned int mask;
+ int shift;
+};
+
+struct rpm_reg_parts {
+ struct request_member mV; /* used if voltage is in mV */
+ struct request_member uV; /* used if voltage is in uV */
+ struct request_member ip; /* peak current in mA */
+ struct request_member pd; /* pull down enable */
+ struct request_member ia; /* average current in mA */
+ struct request_member fm; /* force mode */
+ struct request_member pm; /* power mode */
+ struct request_member pc; /* pin control */
+ struct request_member pf; /* pin function */
+ struct request_member enable_state; /* NCP and switch */
+ struct request_member comp_mode; /* NCP */
+ struct request_member freq; /* frequency: NCP and SMPS */
+ struct request_member freq_clk_src; /* clock source: SMPS */
+ struct request_member hpm; /* switch: control OCP and SS */
+ int request_len;
+};
+
+#define FORCE_MODE_IS_2_BITS(reg) \
+ (((reg)->parts->fm.mask >> (reg)->parts->fm.shift) == 3)
+
+struct qcom_rpm_reg {
+ struct qcom_rpm *rpm;
+
+ struct mutex lock;
+ struct device *dev;
+ struct regulator_desc desc;
+ const struct rpm_reg_parts *parts;
+
+ int resource;
+ u32 val[MAX_REQUEST_LEN];
+
+ int uV;
+ int is_enabled;
+
+ bool supports_force_mode_auto;
+ bool supports_force_mode_bypass;
+};
+
+static const struct rpm_reg_parts rpm8660_ldo_parts = {
+ .request_len = 2,
+ .mV = { 0, 0x00000FFF, 0 },
+ .ip = { 0, 0x00FFF000, 12 },
+ .fm = { 0, 0x03000000, 24 },
+ .pc = { 0, 0x3C000000, 26 },
+ .pf = { 0, 0xC0000000, 30 },
+ .pd = { 1, 0x00000001, 0 },
+ .ia = { 1, 0x00001FFE, 1 },
+};
+
+static const struct rpm_reg_parts rpm8660_smps_parts = {
+ .request_len = 2,
+ .mV = { 0, 0x00000FFF, 0 },
+ .ip = { 0, 0x00FFF000, 12 },
+ .fm = { 0, 0x03000000, 24 },
+ .pc = { 0, 0x3C000000, 26 },
+ .pf = { 0, 0xC0000000, 30 },
+ .pd = { 1, 0x00000001, 0 },
+ .ia = { 1, 0x00001FFE, 1 },
+ .freq = { 1, 0x001FE000, 13 },
+ .freq_clk_src = { 1, 0x00600000, 21 },
+};
+
+static const struct rpm_reg_parts rpm8660_switch_parts = {
+ .request_len = 1,
+ .enable_state = { 0, 0x00000001, 0 },
+ .pd = { 0, 0x00000002, 1 },
+ .pc = { 0, 0x0000003C, 2 },
+ .pf = { 0, 0x000000C0, 6 },
+ .hpm = { 0, 0x00000300, 8 },
+};
+
+static const struct rpm_reg_parts rpm8660_ncp_parts = {
+ .request_len = 1,
+ .mV = { 0, 0x00000FFF, 0 },
+ .enable_state = { 0, 0x00001000, 12 },
+ .comp_mode = { 0, 0x00002000, 13 },
+ .freq = { 0, 0x003FC000, 14 },
+};
+
+static const struct rpm_reg_parts rpm8960_ldo_parts = {
+ .request_len = 2,
+ .uV = { 0, 0x007FFFFF, 0 },
+ .pd = { 0, 0x00800000, 23 },
+ .pc = { 0, 0x0F000000, 24 },
+ .pf = { 0, 0xF0000000, 28 },
+ .ip = { 1, 0x000003FF, 0 },
+ .ia = { 1, 0x000FFC00, 10 },
+ .fm = { 1, 0x00700000, 20 },
+};
+
+static const struct rpm_reg_parts rpm8960_smps_parts = {
+ .request_len = 2,
+ .uV = { 0, 0x007FFFFF, 0 },
+ .pd = { 0, 0x00800000, 23 },
+ .pc = { 0, 0x0F000000, 24 },
+ .pf = { 0, 0xF0000000, 28 },
+ .ip = { 1, 0x000003FF, 0 },
+ .ia = { 1, 0x000FFC00, 10 },
+ .fm = { 1, 0x00700000, 20 },
+ .pm = { 1, 0x00800000, 23 },
+ .freq = { 1, 0x1F000000, 24 },
+ .freq_clk_src = { 1, 0x60000000, 29 },
+};
+
+static const struct rpm_reg_parts rpm8960_switch_parts = {
+ .request_len = 1,
+ .enable_state = { 0, 0x00000001, 0 },
+ .pd = { 0, 0x00000002, 1 },
+ .pc = { 0, 0x0000003C, 2 },
+ .pf = { 0, 0x000003C0, 6 },
+ .hpm = { 0, 0x00000C00, 10 },
+};
+
+static const struct rpm_reg_parts rpm8960_ncp_parts = {
+ .request_len = 1,
+ .uV = { 0, 0x007FFFFF, 0 },
+ .enable_state = { 0, 0x00800000, 23 },
+ .comp_mode = { 0, 0x01000000, 24 },
+ .freq = { 0, 0x3E000000, 25 },
+};
+
+/*
+ * Physically available PMIC regulator voltage ranges
+ */
+static const struct regulator_linear_range pldo_ranges[] = {
+ REGULATOR_LINEAR_RANGE( 750000, 0, 59, 12500),
+ REGULATOR_LINEAR_RANGE(1500000, 60, 123, 25000),
+ REGULATOR_LINEAR_RANGE(3100000, 124, 160, 50000),
+};
+
+static const struct regulator_linear_range nldo_ranges[] = {
+ REGULATOR_LINEAR_RANGE( 750000, 0, 63, 12500),
+};
+
+static const struct regulator_linear_range nldo1200_ranges[] = {
+ REGULATOR_LINEAR_RANGE( 375000, 0, 59, 6250),
+ REGULATOR_LINEAR_RANGE( 750000, 60, 123, 12500),
+};
+
+static const struct regulator_linear_range smps_ranges[] = {
+ REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500),
+ REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500),
+ REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000),
+};
+
+static const struct regulator_linear_range ftsmps_ranges[] = {
+ REGULATOR_LINEAR_RANGE( 350000, 0, 6, 50000),
+ REGULATOR_LINEAR_RANGE( 700000, 7, 63, 12500),
+ REGULATOR_LINEAR_RANGE(1500000, 64, 100, 50000),
+};
+
+static const struct regulator_linear_range ncp_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1500000, 0, 31, 50000),
+};
+
+static int rpm_reg_write(struct qcom_rpm_reg *vreg,
+ const struct request_member *req,
+ const int value)
+{
+ if (WARN_ON((value << req->shift) & ~req->mask))
+ return -EINVAL;
+
+ vreg->val[req->word] &= ~req->mask;
+ vreg->val[req->word] |= value << req->shift;
+
+ return qcom_rpm_write(vreg->rpm,
+ vreg->resource,
+ vreg->val,
+ vreg->parts->request_len);
+}
+
+static int rpm_reg_set_mV_sel(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
+ const struct rpm_reg_parts *parts = vreg->parts;
+ const struct request_member *req = &parts->mV;
+ int ret = 0;
+ int uV;
+
+ if (req->mask == 0)
+ return -EINVAL;
+
+ uV = regulator_list_voltage_linear_range(rdev, selector);
+ if (uV < 0)
+ return uV;
+
+ mutex_lock(&vreg->lock);
+ vreg->uV = uV;
+ if (vreg->is_enabled)
+ ret = rpm_reg_write(vreg, req, vreg->uV / 1000);
+ mutex_unlock(&vreg->lock);
+
+ return ret;
+}
+
+static int rpm_reg_set_uV_sel(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
+ const struct rpm_reg_parts *parts = vreg->parts;
+ const struct request_member *req = &parts->uV;
+ int ret = 0;
+ int uV;
+
+ if (req->mask == 0)
+ return -EINVAL;
+
+ uV = regulator_list_voltage_linear_range(rdev, selector);
+ if (uV < 0)
+ return uV;
+
+ mutex_lock(&vreg->lock);
+ vreg->uV = uV;
+ if (vreg->is_enabled)
+ ret = rpm_reg_write(vreg, req, vreg->uV);
+ mutex_unlock(&vreg->lock);
+
+ return ret;
+}
+
+static int rpm_reg_get_voltage(struct regulator_dev *rdev)
+{
+ struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
+
+ return vreg->uV;
+}
+
+static int rpm_reg_mV_enable(struct regulator_dev *rdev)
+{
+ struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
+ const struct rpm_reg_parts *parts = vreg->parts;
+ const struct request_member *req = &parts->mV;
+ int ret;
+
+ if (req->mask == 0)
+ return -EINVAL;
+
+ mutex_lock(&vreg->lock);
+ ret = rpm_reg_write(vreg, req, vreg->uV / 1000);
+ if (!ret)
+ vreg->is_enabled = 1;
+ mutex_unlock(&vreg->lock);
+
+ return ret;
+}
+
+static int rpm_reg_uV_enable(struct regulator_dev *rdev)
+{
+ struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
+ const struct rpm_reg_parts *parts = vreg->parts;
+ const struct request_member *req = &parts->uV;
+ int ret;
+
+ if (req->mask == 0)
+ return -EINVAL;
+
+ mutex_lock(&vreg->lock);
+ ret = rpm_reg_write(vreg, req, vreg->uV);
+ if (!ret)
+ vreg->is_enabled = 1;
+ mutex_unlock(&vreg->lock);
+
+ return ret;
+}
+
+static int rpm_reg_switch_enable(struct regulator_dev *rdev)
+{
+ struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
+ const struct rpm_reg_parts *parts = vreg->parts;
+ const struct request_member *req = &parts->enable_state;
+ int ret;
+
+ if (req->mask == 0)
+ return -EINVAL;
+
+ mutex_lock(&vreg->lock);
+ ret = rpm_reg_write(vreg, req, 1);
+ if (!ret)
+ vreg->is_enabled = 1;
+ mutex_unlock(&vreg->lock);
+
+ return ret;
+}
+
+static int rpm_reg_mV_disable(struct regulator_dev *rdev)
+{
+ struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
+ const struct rpm_reg_parts *parts = vreg->parts;
+ const struct request_member *req = &parts->mV;
+ int ret;
+
+ if (req->mask == 0)
+ return -EINVAL;
+
+ mutex_lock(&vreg->lock);
+ ret = rpm_reg_write(vreg, req, 0);
+ if (!ret)
+ vreg->is_enabled = 0;
+ mutex_unlock(&vreg->lock);
+
+ return ret;
+}
+
+static int rpm_reg_uV_disable(struct regulator_dev *rdev)
+{
+ struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
+ const struct rpm_reg_parts *parts = vreg->parts;
+ const struct request_member *req = &parts->uV;
+ int ret;
+
+ if (req->mask == 0)
+ return -EINVAL;
+
+ mutex_lock(&vreg->lock);
+ ret = rpm_reg_write(vreg, req, 0);
+ if (!ret)
+ vreg->is_enabled = 0;
+ mutex_unlock(&vreg->lock);
+
+ return ret;
+}
+
+static int rpm_reg_switch_disable(struct regulator_dev *rdev)
+{
+ struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
+ const struct rpm_reg_parts *parts = vreg->parts;
+ const struct request_member *req = &parts->enable_state;
+ int ret;
+
+ if (req->mask == 0)
+ return -EINVAL;
+
+ mutex_lock(&vreg->lock);
+ ret = rpm_reg_write(vreg, req, 0);
+ if (!ret)
+ vreg->is_enabled = 0;
+ mutex_unlock(&vreg->lock);
+
+ return ret;
+}
+
+static int rpm_reg_is_enabled(struct regulator_dev *rdev)
+{
+ struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
+
+ return vreg->is_enabled;
+}
+
+static struct regulator_ops uV_ops = {
+ .list_voltage = regulator_list_voltage_linear_range,
+
+ .set_voltage_sel = rpm_reg_set_uV_sel,
+ .get_voltage = rpm_reg_get_voltage,
+
+ .enable = rpm_reg_uV_enable,
+ .disable = rpm_reg_uV_disable,
+ .is_enabled = rpm_reg_is_enabled,
+};
+
+static struct regulator_ops mV_ops = {
+ .list_voltage = regulator_list_voltage_linear_range,
+
+ .set_voltage_sel = rpm_reg_set_mV_sel,
+ .get_voltage = rpm_reg_get_voltage,
+
+ .enable = rpm_reg_mV_enable,
+ .disable = rpm_reg_mV_disable,
+ .is_enabled = rpm_reg_is_enabled,
+};
+
+static struct regulator_ops switch_ops = {
+ .enable = rpm_reg_switch_enable,
+ .disable = rpm_reg_switch_disable,
+ .is_enabled = rpm_reg_is_enabled,
+};
+
+/*
+ * PM8058 regulators
+ */
+static const struct qcom_rpm_reg pm8058_pldo = {
+ .desc.linear_ranges = pldo_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
+ .desc.n_voltages = 161,
+ .desc.ops = &mV_ops,
+ .parts = &rpm8660_ldo_parts,
+ .supports_force_mode_auto = false,
+ .supports_force_mode_bypass = false,
+};
+
+static const struct qcom_rpm_reg pm8058_nldo = {
+ .desc.linear_ranges = nldo_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
+ .desc.n_voltages = 64,
+ .desc.ops = &mV_ops,
+ .parts = &rpm8660_ldo_parts,
+ .supports_force_mode_auto = false,
+ .supports_force_mode_bypass = false,
+};
+
+static const struct qcom_rpm_reg pm8058_smps = {
+ .desc.linear_ranges = smps_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges),
+ .desc.n_voltages = 154,
+ .desc.ops = &mV_ops,
+ .parts = &rpm8660_smps_parts,
+ .supports_force_mode_auto = false,
+ .supports_force_mode_bypass = false,
+};
+
+static const struct qcom_rpm_reg pm8058_ncp = {
+ .desc.linear_ranges = ncp_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges),
+ .desc.n_voltages = 32,
+ .desc.ops = &mV_ops,
+ .parts = &rpm8660_ncp_parts,
+};
+
+static const struct qcom_rpm_reg pm8058_switch = {
+ .desc.ops = &switch_ops,
+ .parts = &rpm8660_switch_parts,
+};
+
+/*
+ * PM8901 regulators
+ */
+static const struct qcom_rpm_reg pm8901_pldo = {
+ .desc.linear_ranges = pldo_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
+ .desc.n_voltages = 161,
+ .desc.ops = &mV_ops,
+ .parts = &rpm8660_ldo_parts,
+ .supports_force_mode_auto = false,
+ .supports_force_mode_bypass = true,
+};
+
+static const struct qcom_rpm_reg pm8901_nldo = {
+ .desc.linear_ranges = nldo_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
+ .desc.n_voltages = 64,
+ .desc.ops = &mV_ops,
+ .parts = &rpm8660_ldo_parts,
+ .supports_force_mode_auto = false,
+ .supports_force_mode_bypass = true,
+};
+
+static const struct qcom_rpm_reg pm8901_ftsmps = {
+ .desc.linear_ranges = ftsmps_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges),
+ .desc.n_voltages = 101,
+ .desc.ops = &mV_ops,
+ .parts = &rpm8660_smps_parts,
+ .supports_force_mode_auto = true,
+ .supports_force_mode_bypass = false,
+};
+
+static const struct qcom_rpm_reg pm8901_switch = {
+ .desc.ops = &switch_ops,
+ .parts = &rpm8660_switch_parts,
+};
+
+/*
+ * PM8921 regulators
+ */
+static const struct qcom_rpm_reg pm8921_pldo = {
+ .desc.linear_ranges = pldo_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
+ .desc.n_voltages = 161,
+ .desc.ops = &uV_ops,
+ .parts = &rpm8960_ldo_parts,
+ .supports_force_mode_auto = false,
+ .supports_force_mode_bypass = true,
+};
+
+static const struct qcom_rpm_reg pm8921_nldo = {
+ .desc.linear_ranges = nldo_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
+ .desc.n_voltages = 64,
+ .desc.ops = &uV_ops,
+ .parts = &rpm8960_ldo_parts,
+ .supports_force_mode_auto = false,
+ .supports_force_mode_bypass = true,
+};
+
+static const struct qcom_rpm_reg pm8921_nldo1200 = {
+ .desc.linear_ranges = nldo1200_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(nldo1200_ranges),
+ .desc.n_voltages = 124,
+ .desc.ops = &uV_ops,
+ .parts = &rpm8960_ldo_parts,
+ .supports_force_mode_auto = false,
+ .supports_force_mode_bypass = true,
+};
+
+static const struct qcom_rpm_reg pm8921_smps = {
+ .desc.linear_ranges = smps_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges),
+ .desc.n_voltages = 154,
+ .desc.ops = &uV_ops,
+ .parts = &rpm8960_smps_parts,
+ .supports_force_mode_auto = true,
+ .supports_force_mode_bypass = false,
+};
+
+static const struct qcom_rpm_reg pm8921_ftsmps = {
+ .desc.linear_ranges = ftsmps_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges),
+ .desc.n_voltages = 101,
+ .desc.ops = &uV_ops,
+ .parts = &rpm8960_smps_parts,
+ .supports_force_mode_auto = true,
+ .supports_force_mode_bypass = false,
+};
+
+static const struct qcom_rpm_reg pm8921_ncp = {
+ .desc.linear_ranges = ncp_ranges,
+ .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges),
+ .desc.n_voltages = 32,
+ .desc.ops = &uV_ops,
+ .parts = &rpm8960_ncp_parts,
+};
+
+static const struct qcom_rpm_reg pm8921_switch = {
+ .desc.ops = &switch_ops,
+ .parts = &rpm8960_switch_parts,
+};
+
+static const struct of_device_id rpm_of_match[] = {
+ { .compatible = "qcom,rpm-pm8058-pldo", .data = &pm8058_pldo },
+ { .compatible = "qcom,rpm-pm8058-nldo", .data = &pm8058_nldo },
+ { .compatible = "qcom,rpm-pm8058-smps", .data = &pm8058_smps },
+ { .compatible = "qcom,rpm-pm8058-ncp", .data = &pm8058_ncp },
+ { .compatible = "qcom,rpm-pm8058-switch", .data = &pm8058_switch },
+
+ { .compatible = "qcom,rpm-pm8901-pldo", .data = &pm8901_pldo },
+ { .compatible = "qcom,rpm-pm8901-nldo", .data = &pm8901_nldo },
+ { .compatible = "qcom,rpm-pm8901-ftsmps", .data = &pm8901_ftsmps },
+ { .compatible = "qcom,rpm-pm8901-switch", .data = &pm8901_switch },
+
+ { .compatible = "qcom,rpm-pm8921-pldo", .data = &pm8921_pldo },
+ { .compatible = "qcom,rpm-pm8921-nldo", .data = &pm8921_nldo },
+ { .compatible = "qcom,rpm-pm8921-nldo1200", .data = &pm8921_nldo1200 },
+ { .compatible = "qcom,rpm-pm8921-smps", .data = &pm8921_smps },
+ { .compatible = "qcom,rpm-pm8921-ftsmps", .data = &pm8921_ftsmps },
+ { .compatible = "qcom,rpm-pm8921-ncp", .data = &pm8921_ncp },
+ { .compatible = "qcom,rpm-pm8921-switch", .data = &pm8921_switch },
+ { }
+};
+MODULE_DEVICE_TABLE(of, rpm_of_match);
+
+static int rpm_reg_set(struct qcom_rpm_reg *vreg,
+ const struct request_member *req,
+ const int value)
+{
+ if (req->mask == 0 || (value << req->shift) & ~req->mask)
+ return -EINVAL;
+
+ vreg->val[req->word] &= ~req->mask;
+ vreg->val[req->word] |= value << req->shift;
+
+ return 0;
+}
+
+static int rpm_reg_of_parse_freq(struct device *dev, struct qcom_rpm_reg *vreg)
+{
+ static const int freq_table[] = {
+ 19200000, 9600000, 6400000, 4800000, 3840000, 3200000, 2740000,
+ 2400000, 2130000, 1920000, 1750000, 1600000, 1480000, 1370000,
+ 1280000, 1200000,
+
+ };
+ const char *key;
+ u32 freq;
+ int ret;
+ int i;
+
+ key = "qcom,switch-mode-frequency";
+ ret = of_property_read_u32(dev->of_node, key, &freq);
+ if (ret) {
+ dev_err(dev, "regulator requires %s property\n", key);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
+ if (freq == freq_table[i]) {
+ rpm_reg_set(vreg, &vreg->parts->freq, i + 1);
+ return 0;
+ }
+ }
+
+ dev_err(dev, "invalid frequency %d\n", freq);
+ return -EINVAL;
+}
+
+static int rpm_reg_probe(struct platform_device *pdev)
+{
+ struct regulator_init_data *initdata;
+ const struct qcom_rpm_reg *template;
+ const struct of_device_id *match;
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+ struct qcom_rpm_reg *vreg;
+ const char *key;
+ u32 force_mode;
+ bool pwm;
+ u32 val;
+ int ret;
+
+ match = of_match_device(rpm_of_match, &pdev->dev);
+ template = match->data;
+
+ initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node);
+ if (!initdata)
+ return -EINVAL;
+
+ vreg = devm_kmalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL);
+ if (!vreg) {
+ dev_err(&pdev->dev, "failed to allocate vreg\n");
+ return -ENOMEM;
+ }
+ memcpy(vreg, template, sizeof(*vreg));
+ mutex_init(&vreg->lock);
+ vreg->dev = &pdev->dev;
+ vreg->desc.id = -1;
+ vreg->desc.owner = THIS_MODULE;
+ vreg->desc.type = REGULATOR_VOLTAGE;
+ vreg->desc.name = pdev->dev.of_node->name;
+
+ vreg->rpm = dev_get_drvdata(pdev->dev.parent);
+ if (!vreg->rpm) {
+ dev_err(&pdev->dev, "unable to retrieve handle to rpm\n");
+ return -ENODEV;
+ }
+
+ key = "reg";
+ ret = of_property_read_u32(pdev->dev.of_node, key, &val);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to read %s\n", key);
+ return ret;
+ }
+ vreg->resource = val;
+
+ if ((vreg->parts->uV.mask || vreg->parts->mV.mask) &&
+ (!initdata->constraints.min_uV || !initdata->constraints.max_uV)) {
+ dev_err(&pdev->dev, "no voltage specified for regulator\n");
+ return -EINVAL;
+ }
+
+ key = "bias-pull-down";
+ if (of_property_read_bool(pdev->dev.of_node, key)) {
+ ret = rpm_reg_set(vreg, &vreg->parts->pd, 1);
+ if (ret) {
+ dev_err(&pdev->dev, "%s is invalid", key);
+ return ret;
+ }
+ }
+
+ if (vreg->parts->freq.mask) {
+ ret = rpm_reg_of_parse_freq(&pdev->dev, vreg);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (vreg->parts->pm.mask) {
+ key = "qcom,power-mode-hysteretic";
+ pwm = !of_property_read_bool(pdev->dev.of_node, key);
+
+ ret = rpm_reg_set(vreg, &vreg->parts->pm, pwm);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to set power mode\n");
+ return ret;
+ }
+ }
+
+ if (vreg->parts->fm.mask) {
+ force_mode = -1;
+
+ key = "qcom,force-mode";
+ ret = of_property_read_u32(pdev->dev.of_node, key, &val);
+ if (ret == -EINVAL) {
+ val = QCOM_RPM_FORCE_MODE_NONE;
+ } else if (ret < 0) {
+ dev_err(&pdev->dev, "failed to read %s\n", key);
+ return ret;
+ }
+
+ /*
+ * If force-mode is encoded as 2 bits then the
+ * possible register values are:
+ * NONE, LPM, HPM
+ * otherwise:
+ * NONE, LPM, AUTO, HPM, BYPASS
+ */
+ switch (val) {
+ case QCOM_RPM_FORCE_MODE_NONE:
+ force_mode = 0;
+ break;
+ case QCOM_RPM_FORCE_MODE_LPM:
+ force_mode = 1;
+ break;
+ case QCOM_RPM_FORCE_MODE_HPM:
+ if (FORCE_MODE_IS_2_BITS(vreg))
+ force_mode = 2;
+ else
+ force_mode = 3;
+ break;
+ case QCOM_RPM_FORCE_MODE_AUTO:
+ if (vreg->supports_force_mode_auto)
+ force_mode = 2;
+ break;
+ case QCOM_RPM_FORCE_MODE_BYPASS:
+ if (vreg->supports_force_mode_bypass)
+ force_mode = 4;
+ break;
+ }
+
+ if (force_mode < 0) {
+ dev_err(&pdev->dev, "invalid force mode\n");
+ return -EINVAL;
+ }
+
+ ret = rpm_reg_set(vreg, &vreg->parts->fm, force_mode);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to set force mode\n");
+ return ret;
+ }
+ }
+
+ config.dev = &pdev->dev;
+ config.init_data = initdata;
+ config.driver_data = vreg;
+ config.of_node = pdev->dev.of_node;
+ rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "can't register regulator\n");
+ return PTR_ERR(rdev);
+ }
+
+ return 0;
+}
+
+static struct platform_driver rpm_reg_driver = {
+ .probe = rpm_reg_probe,
+ .driver = {
+ .name = "qcom_rpm_reg",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(rpm_of_match),
+ },
+};
+
+static int __init rpm_reg_init(void)
+{
+ return platform_driver_register(&rpm_reg_driver);
+}
+subsys_initcall(rpm_reg_init);
+
+static void __exit rpm_reg_exit(void)
+{
+ platform_driver_unregister(&rpm_reg_driver);
+}
+module_exit(rpm_reg_exit)
+
+MODULE_DESCRIPTION("Qualcomm RPM regulator driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/regulator/sky81452-regulator.c b/drivers/regulator/sky81452-regulator.c
new file mode 100644
index 000000000000..97aff0ccd65f
--- /dev/null
+++ b/drivers/regulator/sky81452-regulator.c
@@ -0,0 +1,130 @@
+/*
+ * sky81452-regulator.c SKY81452 regulator driver
+ *
+ * Copyright 2014 Skyworks Solutions Inc.
+ * Author : Gyungoh Yoo <jack.yoo@skyworksinc.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, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+
+/* registers */
+#define SKY81452_REG1 0x01
+#define SKY81452_REG3 0x03
+
+/* bit mask */
+#define SKY81452_LEN 0x40
+#define SKY81452_LOUT 0x1F
+
+static struct regulator_ops sky81452_reg_ops = {
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+static const struct regulator_linear_range sky81452_reg_ranges[] = {
+ REGULATOR_LINEAR_RANGE(4500000, 0, 14, 250000),
+ REGULATOR_LINEAR_RANGE(9000000, 15, 31, 1000000),
+};
+
+static const struct regulator_desc sky81452_reg = {
+ .name = "LOUT",
+ .ops = &sky81452_reg_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .n_voltages = SKY81452_LOUT + 1,
+ .linear_ranges = sky81452_reg_ranges,
+ .n_linear_ranges = ARRAY_SIZE(sky81452_reg_ranges),
+ .vsel_reg = SKY81452_REG3,
+ .vsel_mask = SKY81452_LOUT,
+ .enable_reg = SKY81452_REG1,
+ .enable_mask = SKY81452_LEN,
+};
+
+#ifdef CONFIG_OF
+static struct regulator_init_data *sky81452_reg_parse_dt(struct device *dev)
+{
+ struct regulator_init_data *init_data;
+ struct device_node *np;
+
+ np = of_get_child_by_name(dev->parent->of_node, "regulator");
+ if (unlikely(!np)) {
+ dev_err(dev, "regulator node not found");
+ return NULL;
+ }
+
+ init_data = of_get_regulator_init_data(dev, np);
+
+ of_node_put(np);
+ return init_data;
+}
+#else
+static struct regulator_init_data *sky81452_reg_parse_dt(struct device *dev)
+{
+ return ERR_PTR(-EINVAL);
+}
+#endif
+
+static int sky81452_reg_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ const struct regulator_init_data *init_data = dev_get_platdata(dev);
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+
+ if (!init_data) {
+ init_data = sky81452_reg_parse_dt(dev);
+ if (IS_ERR(init_data))
+ return PTR_ERR(init_data);
+ }
+
+ config.dev = dev;
+ config.init_data = init_data;
+ config.of_node = dev->of_node;
+ config.regmap = dev_get_drvdata(dev->parent);
+
+ rdev = devm_regulator_register(dev, &sky81452_reg, &config);
+ if (IS_ERR(rdev))
+ return PTR_ERR(rdev);
+
+ platform_set_drvdata(pdev, rdev);
+
+ return 0;
+}
+
+static struct platform_driver sky81452_reg_driver = {
+ .driver = {
+ .name = "sky81452-regulator",
+ },
+ .probe = sky81452_reg_probe,
+};
+
+module_platform_driver(sky81452_reg_driver);
+
+MODULE_DESCRIPTION("Skyworks SKY81452 Regulator driver");
+MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.0");
diff --git a/drivers/regulator/st-pwm.c b/drivers/regulator/st-pwm.c
deleted file mode 100644
index 5ea78df449f8..000000000000
--- a/drivers/regulator/st-pwm.c
+++ /dev/null
@@ -1,190 +0,0 @@
-/*
- * Regulator driver for ST's PWM Regulators
- *
- * Copyright (C) 2014 - STMicroelectronics Inc.
- *
- * Author: Lee Jones <lee.jones@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/regulator/driver.h>
-#include <linux/regulator/machine.h>
-#include <linux/regulator/of_regulator.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/pwm.h>
-
-#define ST_PWM_REG_PERIOD 8448
-
-struct st_pwm_regulator_pdata {
- const struct regulator_desc *desc;
- struct st_pwm_voltages *duty_cycle_table;
-};
-
-struct st_pwm_regulator_data {
- const struct st_pwm_regulator_pdata *pdata;
- struct pwm_device *pwm;
- bool enabled;
- int state;
-};
-
-struct st_pwm_voltages {
- unsigned int uV;
- unsigned int dutycycle;
-};
-
-static int st_pwm_regulator_get_voltage_sel(struct regulator_dev *dev)
-{
- struct st_pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
-
- return drvdata->state;
-}
-
-static int st_pwm_regulator_set_voltage_sel(struct regulator_dev *dev,
- unsigned selector)
-{
- struct st_pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
- int dutycycle;
- int ret;
-
- dutycycle = (ST_PWM_REG_PERIOD / 100) *
- drvdata->pdata->duty_cycle_table[selector].dutycycle;
-
- ret = pwm_config(drvdata->pwm, dutycycle, ST_PWM_REG_PERIOD);
- if (ret) {
- dev_err(&dev->dev, "Failed to configure PWM\n");
- return ret;
- }
-
- drvdata->state = selector;
-
- if (!drvdata->enabled) {
- ret = pwm_enable(drvdata->pwm);
- if (ret) {
- dev_err(&dev->dev, "Failed to enable PWM\n");
- return ret;
- }
- drvdata->enabled = true;
- }
-
- return 0;
-}
-
-static int st_pwm_regulator_list_voltage(struct regulator_dev *dev,
- unsigned selector)
-{
- struct st_pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
-
- if (selector >= dev->desc->n_voltages)
- return -EINVAL;
-
- return drvdata->pdata->duty_cycle_table[selector].uV;
-}
-
-static struct regulator_ops st_pwm_regulator_voltage_ops = {
- .set_voltage_sel = st_pwm_regulator_set_voltage_sel,
- .get_voltage_sel = st_pwm_regulator_get_voltage_sel,
- .list_voltage = st_pwm_regulator_list_voltage,
- .map_voltage = regulator_map_voltage_iterate,
-};
-
-static struct st_pwm_voltages b2105_duty_cycle_table[] = {
- { .uV = 1114000, .dutycycle = 0, },
- { .uV = 1095000, .dutycycle = 10, },
- { .uV = 1076000, .dutycycle = 20, },
- { .uV = 1056000, .dutycycle = 30, },
- { .uV = 1036000, .dutycycle = 40, },
- { .uV = 1016000, .dutycycle = 50, },
- /* WARNING: Values above 50% duty-cycle cause boot failures. */
-};
-
-static const struct regulator_desc b2105_desc = {
- .name = "b2105-pwm-regulator",
- .ops = &st_pwm_regulator_voltage_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- .n_voltages = ARRAY_SIZE(b2105_duty_cycle_table),
- .supply_name = "pwm",
-};
-
-static const struct st_pwm_regulator_pdata b2105_info = {
- .desc = &b2105_desc,
- .duty_cycle_table = b2105_duty_cycle_table,
-};
-
-static const struct of_device_id st_pwm_of_match[] = {
- { .compatible = "st,b2105-pwm-regulator", .data = &b2105_info, },
- { },
-};
-MODULE_DEVICE_TABLE(of, st_pwm_of_match);
-
-static int st_pwm_regulator_probe(struct platform_device *pdev)
-{
- struct st_pwm_regulator_data *drvdata;
- struct regulator_dev *regulator;
- struct regulator_config config = { };
- struct device_node *np = pdev->dev.of_node;
- const struct of_device_id *of_match;
-
- if (!np) {
- dev_err(&pdev->dev, "Device Tree node missing\n");
- return -EINVAL;
- }
-
- drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
- if (!drvdata)
- return -ENOMEM;
-
- of_match = of_match_device(st_pwm_of_match, &pdev->dev);
- if (!of_match) {
- dev_err(&pdev->dev, "failed to match of device\n");
- return -ENODEV;
- }
- drvdata->pdata = of_match->data;
-
- config.init_data = of_get_regulator_init_data(&pdev->dev, np);
- if (!config.init_data)
- return -ENOMEM;
-
- config.of_node = np;
- config.dev = &pdev->dev;
- config.driver_data = drvdata;
-
- drvdata->pwm = devm_pwm_get(&pdev->dev, NULL);
- if (IS_ERR(drvdata->pwm)) {
- dev_err(&pdev->dev, "Failed to get PWM\n");
- return PTR_ERR(drvdata->pwm);
- }
-
- regulator = devm_regulator_register(&pdev->dev,
- drvdata->pdata->desc, &config);
- if (IS_ERR(regulator)) {
- dev_err(&pdev->dev, "Failed to register regulator %s\n",
- drvdata->pdata->desc->name);
- return PTR_ERR(regulator);
- }
-
- return 0;
-}
-
-static struct platform_driver st_pwm_regulator_driver = {
- .driver = {
- .name = "st-pwm-regulator",
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(st_pwm_of_match),
- },
- .probe = st_pwm_regulator_probe,
-};
-
-module_platform_driver(st_pwm_regulator_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Lee Jones <lee.jones@linaro.org>");
-MODULE_DESCRIPTION("ST PWM Regulator Driver");
-MODULE_ALIAS("platform:st_pwm-regulator");
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-18 08:16:11 +0000