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Merge remote-tracking branches 'regulator/topic/drivers', 'regulator/topic/enable', 'regulator/topic/fan53555', 'regulator/topic/hi6421' and 'regulator/topic/isl9305' into regulator-next

This commit is contained in:
Mark Brown 2014-09-30 13:50:27 +01:00
parent 95528a55db fdaff15ae6 df11e506d3 e13426bf24 5c5e417bc0 ba441ec225
commit a81bf3c4fc
20 changed files with 2497 additions and 288 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
Documentation/devicetree/bindings/regulator/fan53555.txt Normal file
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@ -0,0 +1,23 @@
Binding for Fairchild FAN53555 regulators
Required properties:
- compatible: one of "fcs,fan53555", "silergy,syr827", "silergy,syr828"
- reg: I2C address
Optional properties:
- fcs,suspend-voltage-selector: declare which of the two available
voltage selector registers should be used for the suspend
voltage. The other one is used for the runtime voltage setting
Possible values are either <0> or <1>
- vin-supply: regulator supplying the vin pin
Example:
regulator@40 {
compatible = "fcs,fan53555";
regulator-name = "fan53555";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1800000>;
vin-supply = <&parent_reg>;
fcs,suspend-voltage-selector = <1>;
};

36
Documentation/devicetree/bindings/regulator/isl9305.txt Normal file
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@ -0,0 +1,36 @@
Intersil ISL9305/ISL9305H voltage regulator
Required properties:
- compatible: "isl,isl9305" or "isl,isl9305h"
- reg: I2C slave address, usually 0x68.
- regulators: A node that houses a sub-node for each regulator within the
device. Each sub-node is identified using the node's name, with valid
values being "dcd1", "dcd2", "ldo1" and "ldo2". The content of each sub-node
is defined by the standard binding for regulators; see regulator.txt.
- VINDCD1-supply: A phandle to a regulator node supplying VINDCD1.
VINDCD2-supply: A phandle to a regulator node supplying VINDCD2.
VINLDO1-supply: A phandle to a regulator node supplying VINLDO1.
VINLDO2-supply: A phandle to a regulator node supplying VINLDO2.
Optional properties:
- Per-regulator optional properties are defined in regulator.txt
Example
pmic: isl9305@68 {
compatible = "isl,isl9305";
reg = <0x68>;
VINDCD1-supply = <&system_power>;
VINDCD2-supply = <&system_power>;
VINLDO1-supply = <&system_power>;
VINLDO2-supply = <&system_power>;
regulators {
dcd1 {
regulator-name = "VDD_DSP";
regulator-always-on;
};
};
};

27
Documentation/devicetree/bindings/regulator/pwm-regulator.txt Normal file
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@ -0,0 +1,27 @@
pwm regulator bindings
Required properties:
- compatible: Should be "pwm-regulator"
- pwms: OF device-tree PWM specification (see PWM binding pwm.txt)
- voltage-table: voltage and duty table, include 2 members in each set of
brackets, first one is voltage(unit: uv), the next is duty(unit: percent)
Any property defined as part of the core regulator binding defined in
regulator.txt can also be used.
Example:
pwm_regulator {
compatible = "pwm-regulator;
pwms = <&pwm1 0 8448 0>;
voltage-table = <1114000 0>,
<1095000 10>,
<1076000 20>,
<1056000 30>,
<1036000 40>,
<1016000 50>;
regulator-min-microvolt = <1016000>;
regulator-max-microvolt = <1114000>;
regulator-name = "vdd_logic";
};

16
Documentation/devicetree/bindings/regulator/sky81452-regulator.txt Normal file
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@ -0,0 +1,16 @@
SKY81452 voltage regulator
Required properties:
- any required generic properties defined in regulator.txt
Optional properties:
- any available generic properties defined in regulator.txt
Example:
regulator {
/* generic regulator properties */
regulator-name = "touch_en";
regulator-min-microvolt = <4500000>;
regulator-max-microvolt = <8000000>;
};

2
Documentation/devicetree/bindings/vendor-prefixes.txt
View File

@ -49,6 +49,7 @@ epson Seiko Epson Corp.
est ESTeem Wireless Modems
eukrea Eukréa Electromatique
excito Excito
fcs Fairchild Semiconductor
fsl Freescale Semiconductor
GEFanuc GE Fanuc Intelligent Platforms Embedded Systems, Inc.
gef GE Fanuc Intelligent Platforms Embedded Systems, Inc.
@ -124,6 +125,7 @@ sil Silicon Image
silabs Silicon Laboratories
simtek
sii Seiko Instruments, Inc.
silergy Silergy Corp.
sirf SiRF Technology, Inc.
smsc Standard Microsystems Corporation
snps Synopsys, Inc.

49
drivers/regulator/Kconfig
View File

@ -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"

6
drivers/regulator/Makefile
View File

@ -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

147
drivers/regulator/core.c
View File

@ -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;

215
drivers/regulator/fan53555.c
View File

@ -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,
@ -146,32 +190,11 @@ 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,
};
/* For 00,01,03,05 options:
* VOUT = 0.60V + NSELx * 10mV, from 0.60 to 1.23V.
* For 04 option:
* VOUT = 0.603V + NSELx * 12.826mV, from 0.603 to 1.411V.
* */
static int fan53555_device_setup(struct fan53555_device_info *di,
struct fan53555_platform_data *pdata)
static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di)
{
unsigned int reg, data, mask;
/* Setup voltage control register */
switch (pdata->sleep_vsel_id) {
case FAN53555_VSEL_ID_0:
di->sleep_reg = FAN53555_VSEL0;
di->vol_reg = FAN53555_VSEL1;
break;
case FAN53555_VSEL_ID_1:
di->sleep_reg = FAN53555_VSEL1;
di->vol_reg = FAN53555_VSEL0;
break;
default:
dev_err(di->dev, "Invalid VSEL ID!\n");
return -EINVAL;
}
/* Init voltage range and step */
switch (di->chip_id) {
case FAN53555_CHIP_ID_00:
@ -187,18 +210,68 @@ static int fan53555_device_setup(struct fan53555_device_info *di,
break;
default:
dev_err(di->dev,
"Chip ID[%d]\n not supported!\n", di->chip_id);
"Chip ID %d not supported!\n", di->chip_id);
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 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:
* VOUT = 0.603V + NSELx * 12.826mV, from 0.603 to 1.411V.
* */
static int fan53555_device_setup(struct fan53555_device_info *di,
struct fan53555_platform_data *pdata)
{
int ret = 0;
/* Setup voltage control register */
switch (pdata->sleep_vsel_id) {
case FAN53555_VSEL_ID_0:
di->sleep_reg = FAN53555_VSEL0;
di->vol_reg = FAN53555_VSEL1;
break;
case FAN53555_VSEL_ID_1:
di->sleep_reg = FAN53555_VSEL1;
di->vol_reg = FAN53555_VSEL0;
break;
default:
dev_err(di->dev, "Invalid VSEL ID!\n");
return -EINVAL;
}
switch (di->vendor) {
case FAN53555_VENDOR_FAIRCHILD:
ret = fan53555_voltages_setup_fairchild(di);
break;
case FAN53555_VENDOR_SILERGY:
ret = fan53555_voltages_setup_silergy(di);
break;
default:
dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
return -EINVAL;
}
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,

634
drivers/regulator/hi6421-regulator.c Normal file
View File

@ -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");

4
drivers/regulator/internal.h
View File

@ -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

207
drivers/regulator/isl9305.c Normal file
View File

@ -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");

11
drivers/regulator/mc13892-regulator.c
View File

@ -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));

51
drivers/regulator/of_regulator.c
View File

@ -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;
}

197
drivers/regulator/pwm-regulator.c Normal file
View File

@ -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");

798
drivers/regulator/qcom_rpm-regulator.c Normal file
View File

@ -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");

130
drivers/regulator/sky81452-regulator.c Normal file
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@ -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");

190
drivers/regulator/st-pwm.c
View File

@ -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");

30
include/linux/platform_data/isl9305.h Normal file
View File

@ -0,0 +1,30 @@
/*
* 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.
*/
#ifndef __ISL9305_H
#define __ISL9305_H
#define ISL9305_DCD1 0
#define ISL9305_DCD2 1
#define ISL9305_LDO1 2
#define ISL9305_LDO2 3
#define ISL9305_MAX_REGULATOR ISL9305_LDO2
struct regulator_init_data;
struct isl9305_pdata {
struct regulator_init_data *init_data[ISL9305_MAX_REGULATOR];
};
#endif

12
include/linux/regulator/driver.h
View File

@ -203,6 +203,8 @@ enum regulator_type {
*
* @name: Identifying name for the regulator.
* @supply_name: Identifying the regulator supply
* @of_match: Name used to identify regulator in DT.
* @regulators_node: Name of node containing regulator definitions in DT.
* @id: Numerical identifier for the regulator.
* @ops: Regulator operations table.
* @irq: Interrupt number for the regulator.
@ -240,14 +242,17 @@ enum regulator_type {
* @bypass_val_off: Disabling value for control when using regmap set_bypass
*
* @enable_time: Time taken for initial enable of regulator (in uS).
* @off_on_delay: guard time (in uS), before re-enabling a regulator
*/
struct regulator_desc {
const char *name;
const char *supply_name;
const char *of_match;
const char *regulators_node;
int id;
bool continuous_voltage_range;
unsigned n_voltages;
struct regulator_ops *ops;
const struct regulator_ops *ops;
int irq;
enum regulator_type type;
struct module *owner;
@ -278,6 +283,8 @@ struct regulator_desc {
unsigned int bypass_val_off;
unsigned int enable_time;
unsigned int off_on_delay;
};
/**
@ -350,6 +357,9 @@ struct regulator_dev {
struct regulator_enable_gpio *ena_pin;
unsigned int ena_gpio_state:1;
/* time when this regulator was disabled last time */
unsigned long last_off_jiffy;
};
struct regulator_dev *