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-rw-r--r--drivers/regulator/Kconfig27
-rw-r--r--drivers/regulator/Makefile3
-rw-r--r--drivers/regulator/core.c5
-rw-r--r--drivers/regulator/gpio-regulator.c100
-rw-r--r--drivers/regulator/max8925-regulator.c72
-rw-r--r--drivers/regulator/tps51632-regulator.c332
-rw-r--r--drivers/regulator/tps65090-regulator.c247
-rw-r--r--drivers/regulator/tps80031-regulator.c793
-rw-r--r--drivers/regulator/vexpress.c147
9 files changed, 1660 insertions, 66 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 67d47b59a66..0ae658f048e 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -335,6 +335,17 @@ config REGULATOR_PALMAS
on the muxing. This is handled automatically in the driver by
reading the mux info from OTP.
+config REGULATOR_TPS51632
+ tristate "TI TPS51632 Power Regulator"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ This driver supports TPS51632 voltage regulator chip.
+ The TPS51632 is 3-2-1 Phase D-Cap+ Step Down Driverless Controller
+ with Serial VID control and DVFS.
+ The voltage output can be configure through I2C interface or PWM
+ interface.
+
config REGULATOR_TPS6105X
tristate "TI TPS6105X Power regulators"
depends on TPS6105X
@@ -415,6 +426,15 @@ config REGULATOR_TPS65912
help
This driver supports TPS65912 voltage regulator chip.
+config REGULATOR_TPS80031
+ tristate "TI TPS80031/TPS80032 power regualtor driver"
+ depends on MFD_TPS80031
+ help
+ TPS80031/ TPS80032 Fully Integrated Power Management with Power
+ Path and Battery Charger. It has 5 configurable step-down
+ converters, 11 general purpose LDOs, VBUS generator and digital
+ output to control regulators.
+
config REGULATOR_TWL4030
bool "TI TWL4030/TWL5030/TWL6030/TPS659x0 PMIC"
depends on TWL4030_CORE
@@ -422,6 +442,13 @@ config REGULATOR_TWL4030
This driver supports the voltage regulators provided by
this family of companion chips.
+config REGULATOR_VEXPRESS
+ tristate "Versatile Express regulators"
+ depends on VEXPRESS_CONFIG
+ help
+ This driver provides support for voltage regulators available
+ on the ARM Ltd's Versatile Express platform.
+
config REGULATOR_WM831X
tristate "Wolfson Microelectronics WM831x PMIC regulators"
depends on MFD_WM831X
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index e431eed8a87..6166d122d12 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -41,6 +41,7 @@ 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_PALMAS) += palmas-regulator.o
+obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o
obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o
@@ -56,7 +57,9 @@ obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o
+obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o
obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o
+obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress.o
obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o
obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o
obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index e872c8be080..3db1e011d22 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1985,6 +1985,11 @@ int regulator_is_supported_voltage(struct regulator *regulator,
return ret;
}
+ /* Any voltage within constrains range is fine? */
+ if (rdev->desc->continuous_voltage_range)
+ return min_uV >= rdev->constraints->min_uV &&
+ max_uV <= rdev->constraints->max_uV;
+
ret = regulator_count_voltages(regulator);
if (ret < 0)
return ret;
diff --git a/drivers/regulator/gpio-regulator.c b/drivers/regulator/gpio-regulator.c
index 8b5944f2d7d..dc9260545b8 100644
--- a/drivers/regulator/gpio-regulator.c
+++ b/drivers/regulator/gpio-regulator.c
@@ -28,9 +28,12 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
#include <linux/regulator/gpio-regulator.h>
#include <linux/gpio.h>
#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
struct gpio_regulator_data {
struct regulator_desc desc;
@@ -129,6 +132,89 @@ static struct regulator_ops gpio_regulator_voltage_ops = {
.list_voltage = gpio_regulator_list_voltage,
};
+struct gpio_regulator_config *
+of_get_gpio_regulator_config(struct device *dev, struct device_node *np)
+{
+ struct gpio_regulator_config *config;
+ struct property *prop;
+ const char *regtype;
+ int proplen, gpio, i;
+
+ config = devm_kzalloc(dev,
+ sizeof(struct gpio_regulator_config),
+ GFP_KERNEL);
+ if (!config)
+ return ERR_PTR(-ENOMEM);
+
+ config->init_data = of_get_regulator_init_data(dev, np);
+ if (!config->init_data)
+ return ERR_PTR(-EINVAL);
+
+ config->supply_name = config->init_data->constraints.name;
+
+ if (of_property_read_bool(np, "enable-active-high"))
+ config->enable_high = true;
+
+ if (of_property_read_bool(np, "enable-at-boot"))
+ config->enabled_at_boot = true;
+
+ of_property_read_u32(np, "startup-delay-us", &config->startup_delay);
+
+ config->enable_gpio = of_get_named_gpio(np, "enable-gpio", 0);
+
+ /* Fetch GPIOs. */
+ for (i = 0; ; i++)
+ if (of_get_named_gpio(np, "gpios", i) < 0)
+ break;
+ config->nr_gpios = i;
+
+ config->gpios = devm_kzalloc(dev,
+ sizeof(struct gpio) * config->nr_gpios,
+ GFP_KERNEL);
+ if (!config->gpios)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; config->nr_gpios; i++) {
+ gpio = of_get_named_gpio(np, "gpios", i);
+ if (gpio < 0)
+ break;
+ config->gpios[i].gpio = gpio;
+ }
+
+ /* Fetch states. */
+ prop = of_find_property(np, "states", NULL);
+ if (!prop) {
+ dev_err(dev, "No 'states' property found\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ proplen = prop->length / sizeof(int);
+
+ config->states = devm_kzalloc(dev,
+ sizeof(struct gpio_regulator_state)
+ * (proplen / 2),
+ GFP_KERNEL);
+ if (!config->states)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < proplen / 2; i++) {
+ config->states[i].value =
+ be32_to_cpup((int *)prop->value + (i * 2));
+ config->states[i].gpios =
+ be32_to_cpup((int *)prop->value + (i * 2 + 1));
+ }
+ config->nr_states = i;
+
+ of_property_read_string(np, "regulator-type", &regtype);
+
+ if (!strncmp("voltage", regtype, 7))
+ config->type = REGULATOR_VOLTAGE;
+ else if (!strncmp("current", regtype, 7))
+ config->type = REGULATOR_CURRENT;
+
+ return config;
+}
+
static struct regulator_ops gpio_regulator_current_ops = {
.get_current_limit = gpio_regulator_get_value,
.set_current_limit = gpio_regulator_set_current_limit,
@@ -137,10 +223,17 @@ static struct regulator_ops gpio_regulator_current_ops = {
static int __devinit gpio_regulator_probe(struct platform_device *pdev)
{
struct gpio_regulator_config *config = pdev->dev.platform_data;
+ struct device_node *np = pdev->dev.of_node;
struct gpio_regulator_data *drvdata;
struct regulator_config cfg = { };
int ptr, ret, state;
+ if (np) {
+ config = of_get_gpio_regulator_config(&pdev->dev, np);
+ if (IS_ERR(config))
+ return PTR_ERR(config);
+ }
+
drvdata = devm_kzalloc(&pdev->dev, sizeof(struct gpio_regulator_data),
GFP_KERNEL);
if (drvdata == NULL) {
@@ -215,6 +308,7 @@ static int __devinit gpio_regulator_probe(struct platform_device *pdev)
cfg.dev = &pdev->dev;
cfg.init_data = config->init_data;
cfg.driver_data = drvdata;
+ cfg.of_node = np;
if (config->enable_gpio >= 0)
cfg.ena_gpio = config->enable_gpio;
@@ -270,12 +364,18 @@ static int __devexit gpio_regulator_remove(struct platform_device *pdev)
return 0;
}
+static const struct of_device_id regulator_gpio_of_match[] __devinitconst = {
+ { .compatible = "regulator-gpio", },
+ {},
+};
+
static struct platform_driver gpio_regulator_driver = {
.probe = gpio_regulator_probe,
.remove = __devexit_p(gpio_regulator_remove),
.driver = {
.name = "gpio-regulator",
.owner = THIS_MODULE,
+ .of_match_table = regulator_gpio_of_match,
},
};
diff --git a/drivers/regulator/max8925-regulator.c b/drivers/regulator/max8925-regulator.c
index 9bb0be37495..2b549791c97 100644
--- a/drivers/regulator/max8925-regulator.c
+++ b/drivers/regulator/max8925-regulator.c
@@ -17,6 +17,8 @@
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/max8925.h>
+#include <linux/of.h>
+#include <linux/regulator/of_regulator.h>
#define SD1_DVM_VMIN 850000
#define SD1_DVM_VMAX 1000000
@@ -187,6 +189,34 @@ static struct regulator_ops max8925_regulator_ldo_ops = {
.enable_reg = MAX8925_LDOCTL##_id, \
}
+#ifdef CONFIG_OF
+static struct of_regulator_match max8925_regulator_matches[] = {
+ { .name = "SDV1",},
+ { .name = "SDV2",},
+ { .name = "SDV3",},
+ { .name = "LDO1",},
+ { .name = "LDO2",},
+ { .name = "LDO3",},
+ { .name = "LDO4",},
+ { .name = "LDO5",},
+ { .name = "LDO6",},
+ { .name = "LDO7",},
+ { .name = "LDO8",},
+ { .name = "LDO9",},
+ { .name = "LDO10",},
+ { .name = "LDO11",},
+ { .name = "LDO12",},
+ { .name = "LDO13",},
+ { .name = "LDO14",},
+ { .name = "LDO15",},
+ { .name = "LDO16",},
+ { .name = "LDO17",},
+ { .name = "LDO18",},
+ { .name = "LDO19",},
+ { .name = "LDO20",},
+};
+#endif
+
static struct max8925_regulator_info max8925_regulator_info[] = {
MAX8925_SDV(1, 637.5, 1425, 12.5),
MAX8925_SDV(2, 650, 2225, 25),
@@ -214,6 +244,36 @@ static struct max8925_regulator_info max8925_regulator_info[] = {
MAX8925_LDO(20, 750, 3900, 50),
};
+#ifdef CONFIG_OF
+static int max8925_regulator_dt_init(struct platform_device *pdev,
+ struct max8925_regulator_info *info,
+ struct regulator_config *config,
+ int ridx)
+{
+ struct device_node *nproot, *np;
+ int rcount;
+ nproot = pdev->dev.parent->of_node;
+ if (!nproot)
+ return -ENODEV;
+ np = of_find_node_by_name(nproot, "regulators");
+ if (!np) {
+ dev_err(&pdev->dev, "failed to find regulators node\n");
+ return -ENODEV;
+ }
+
+ rcount = of_regulator_match(&pdev->dev, np,
+ &max8925_regulator_matches[ridx], 1);
+ if (rcount < 0)
+ return -ENODEV;
+ config->init_data = max8925_regulator_matches[ridx].init_data;
+ config->of_node = max8925_regulator_matches[ridx].of_node;
+
+ return 0;
+}
+#else
+#define max8925_regulator_dt_init(w, x, y, z) (-1)
+#endif
+
static int __devinit max8925_regulator_probe(struct platform_device *pdev)
{
struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
@@ -222,7 +282,7 @@ static int __devinit max8925_regulator_probe(struct platform_device *pdev)
struct max8925_regulator_info *ri;
struct resource *res;
struct regulator_dev *rdev;
- int i;
+ int i, regulator_idx;
res = platform_get_resource(pdev, IORESOURCE_REG, 0);
if (!res) {
@@ -231,9 +291,12 @@ static int __devinit max8925_regulator_probe(struct platform_device *pdev)
}
for (i = 0; i < ARRAY_SIZE(max8925_regulator_info); i++) {
ri = &max8925_regulator_info[i];
- if (ri->vol_reg == res->start)
+ if (ri->vol_reg == res->start) {
+ regulator_idx = i;
break;
+ }
}
+
if (i == ARRAY_SIZE(max8925_regulator_info)) {
dev_err(&pdev->dev, "Failed to find regulator %llu\n",
(unsigned long long)res->start);
@@ -243,9 +306,12 @@ static int __devinit max8925_regulator_probe(struct platform_device *pdev)
ri->chip = chip;
config.dev = &pdev->dev;
- config.init_data = pdata;
config.driver_data = ri;
+ if (max8925_regulator_dt_init(pdev, ri, &config, regulator_idx))
+ if (pdata)
+ config.init_data = pdata;
+
rdev = regulator_register(&ri->desc, &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register regulator %s\n",
diff --git a/drivers/regulator/tps51632-regulator.c b/drivers/regulator/tps51632-regulator.c
new file mode 100644
index 00000000000..34603640d6d
--- /dev/null
+++ b/drivers/regulator/tps51632-regulator.c
@@ -0,0 +1,332 @@
+/*
+ * tps51632-regulator.c -- TI TPS51632
+ *
+ * Regulator driver for TPS51632 3-2-1 Phase D-Cap Step Down Driverless
+ * Controller with serial VID control and DVFS.
+ *
+ * Copyright (c) 2012, NVIDIA Corporation.
+ *
+ * Author: Laxman Dewangan <ldewangan@nvidia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307, USA
+ */
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/tps51632-regulator.h>
+#include <linux/slab.h>
+
+/* Register definitions */
+#define TPS51632_VOLTAGE_SELECT_REG 0x0
+#define TPS51632_VOLTAGE_BASE_REG 0x1
+#define TPS51632_OFFSET_REG 0x2
+#define TPS51632_IMON_REG 0x3
+#define TPS51632_VMAX_REG 0x4
+#define TPS51632_DVFS_CONTROL_REG 0x5
+#define TPS51632_POWER_STATE_REG 0x6
+#define TPS51632_SLEW_REGS 0x7
+#define TPS51632_FAULT_REG 0x14
+
+#define TPS51632_MAX_REG 0x15
+
+#define TPS51632_VOUT_MASK 0x7F
+#define TPS51632_VOUT_OFFSET_MASK 0x1F
+#define TPS51632_VMAX_MASK 0x7F
+#define TPS51632_VMAX_LOCK 0x80
+
+/* TPS51632_DVFS_CONTROL_REG */
+#define TPS51632_DVFS_PWMEN 0x1
+#define TPS51632_DVFS_STEP_20 0x2
+#define TPS51632_DVFS_VMAX_PG 0x4
+#define TPS51632_DVFS_PWMRST 0x8
+#define TPS51632_DVFS_OCA_EN 0x10
+#define TPS51632_DVFS_FCCM 0x20
+
+/* TPS51632_POWER_STATE_REG */
+#define TPS51632_POWER_STATE_MASK 0x03
+#define TPS51632_POWER_STATE_MULTI_PHASE_CCM 0x0
+#define TPS51632_POWER_STATE_SINGLE_PHASE_CCM 0x1
+#define TPS51632_POWER_STATE_SINGLE_PHASE_DCM 0x2
+
+#define TPS51632_MIN_VOLATGE 500000
+#define TPS51632_MAX_VOLATGE 1520000
+#define TPS51632_VOLATGE_STEP_10mV 10000
+#define TPS51632_VOLATGE_STEP_20mV 20000
+#define TPS51632_MAX_VSEL 0x7F
+#define TPS51632_MIN_VSEL 0x19
+#define TPS51632_DEFAULT_RAMP_DELAY 6000
+#define TPS51632_VOLT_VSEL(uV) \
+ (DIV_ROUND_UP(uV - TPS51632_MIN_VOLATGE, \
+ TPS51632_VOLATGE_STEP_10mV) + \
+ TPS51632_MIN_VSEL)
+
+/* TPS51632 chip information */
+struct tps51632_chip {
+ struct device *dev;
+ struct regulator_desc desc;
+ struct regulator_dev *rdev;
+ struct regmap *regmap;
+ bool enable_pwm_dvfs;
+};
+
+static int tps51632_dcdc_get_voltage_sel(struct regulator_dev *rdev)
+{
+ struct tps51632_chip *tps = rdev_get_drvdata(rdev);
+ unsigned int data;
+ int ret;
+ unsigned int reg = TPS51632_VOLTAGE_SELECT_REG;
+ int vsel;
+
+ if (tps->enable_pwm_dvfs)
+ reg = TPS51632_VOLTAGE_BASE_REG;
+
+ ret = regmap_read(tps->regmap, reg, &data);
+ if (ret < 0) {
+ dev_err(tps->dev, "reg read failed, err %d\n", ret);
+ return ret;
+ }
+
+ vsel = data & TPS51632_VOUT_MASK;
+
+ if (vsel < TPS51632_MIN_VSEL)
+ return 0;
+ else
+ return vsel - TPS51632_MIN_VSEL;
+}
+
+static int tps51632_dcdc_set_voltage_sel(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ struct tps51632_chip *tps = rdev_get_drvdata(rdev);
+ int vsel;
+ int ret;
+ unsigned int reg = TPS51632_VOLTAGE_SELECT_REG;
+
+ if (tps->enable_pwm_dvfs)
+ reg = TPS51632_VOLTAGE_BASE_REG;
+
+ vsel = selector + TPS51632_MIN_VSEL;
+ if (vsel > TPS51632_MAX_VSEL)
+ return -EINVAL;
+
+ ret = regmap_write(tps->regmap, TPS51632_VOLTAGE_SELECT_REG, vsel);
+ if (ret < 0)
+ dev_err(tps->dev, "reg write failed, err %d\n", ret);
+ return ret;
+}
+
+static int tps51632_dcdc_set_ramp_delay(struct regulator_dev *rdev,
+ int ramp_delay)
+{
+ struct tps51632_chip *tps = rdev_get_drvdata(rdev);
+ int bit = ramp_delay/6000;
+ int ret;
+
+ if (bit)
+ bit--;
+ ret = regmap_write(tps->regmap, TPS51632_SLEW_REGS, BIT(bit));
+ if (ret < 0)
+ dev_err(tps->dev, "SLEW reg write failed, err %d\n", ret);
+ return ret;
+}
+
+static struct regulator_ops tps51632_dcdc_ops = {
+ .get_voltage_sel = tps51632_dcdc_get_voltage_sel,
+ .set_voltage_sel = tps51632_dcdc_set_voltage_sel,
+ .list_voltage = regulator_list_voltage_linear,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+ .set_ramp_delay = tps51632_dcdc_set_ramp_delay,
+};
+
+static int __devinit tps51632_init_dcdc(struct tps51632_chip *tps,
+ struct tps51632_regulator_platform_data *pdata)
+{
+ int ret;
+ uint8_t control = 0;
+ int vsel;
+
+ if (!pdata->enable_pwm_dvfs)
+ goto skip_pwm_config;
+
+ control |= TPS51632_DVFS_PWMEN;
+ tps->enable_pwm_dvfs = pdata->enable_pwm_dvfs;
+ vsel = TPS51632_VOLT_VSEL(pdata->base_voltage_uV);
+ ret = regmap_write(tps->regmap, TPS51632_VOLTAGE_BASE_REG, vsel);
+ if (ret < 0) {
+ dev_err(tps->dev, "BASE reg write failed, err %d\n", ret);
+ return ret;
+ }
+
+ if (pdata->dvfs_step_20mV)
+ control |= TPS51632_DVFS_STEP_20;
+
+ if (pdata->max_voltage_uV) {
+ unsigned int vmax;
+ /**
+ * TPS51632 hw behavior: VMAX register can be write only
+ * once as it get locked after first write. The lock get
+ * reset only when device is power-reset.
+ * Write register only when lock bit is not enabled.
+ */
+ ret = regmap_read(tps->regmap, TPS51632_VMAX_REG, &vmax);
+ if (ret < 0) {
+ dev_err(tps->dev, "VMAX read failed, err %d\n", ret);
+ return ret;
+ }
+ if (!(vmax & TPS51632_VMAX_LOCK)) {
+ vsel = TPS51632_VOLT_VSEL(pdata->max_voltage_uV);
+ ret = regmap_write(tps->regmap, TPS51632_VMAX_REG,
+ vsel);
+ if (ret < 0) {
+ dev_err(tps->dev,
+ "VMAX write failed, err %d\n", ret);
+ return ret;
+ }
+ }
+ }
+
+skip_pwm_config:
+ ret = regmap_write(tps->regmap, TPS51632_DVFS_CONTROL_REG, control);
+ if (ret < 0)
+ dev_err(tps->dev, "DVFS reg write failed, err %d\n", ret);
+ return ret;
+}
+
+static bool rd_wr_reg(struct device *dev, unsigned int reg)
+{
+ if ((reg >= 0x8) && (reg <= 0x10))
+ return false;
+ return true;
+}
+
+static const struct regmap_config tps51632_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .writeable_reg = rd_wr_reg,
+ .readable_reg = rd_wr_reg,
+ .max_register = TPS51632_MAX_REG - 1,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int __devinit tps51632_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tps51632_regulator_platform_data *pdata;
+ struct regulator_dev *rdev;
+ struct tps51632_chip *tps;
+ int ret;
+ struct regulator_config config = { };
+
+ pdata = client->dev.platform_data;
+ if (!pdata) {
+ dev_err(&client->dev, "No Platform data\n");
+ return -EINVAL;
+ }
+
+ tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
+ if (!tps) {
+ dev_err(&client->dev, "Memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ tps->dev = &client->dev;
+ tps->desc.name = id->name;
+ tps->desc.id = 0;
+ tps->desc.ramp_delay = TPS51632_DEFAULT_RAMP_DELAY;
+ tps->desc.min_uV = TPS51632_MIN_VOLATGE;
+ tps->desc.uV_step = TPS51632_VOLATGE_STEP_10mV;
+ tps->desc.n_voltages = (TPS51632_MAX_VSEL - TPS51632_MIN_VSEL) + 1;
+ tps->desc.ops = &tps51632_dcdc_ops;
+ tps->desc.type = REGULATOR_VOLTAGE;
+ tps->desc.owner = THIS_MODULE;
+
+ tps->regmap = devm_regmap_init_i2c(client, &tps51632_regmap_config);
+ if (IS_ERR(tps->regmap)) {
+ ret = PTR_ERR(tps->regmap);
+ dev_err(&client->dev, "regmap init failed, err %d\n", ret);
+ return ret;
+ }
+ i2c_set_clientdata(client, tps);
+
+ ret = tps51632_init_dcdc(tps, pdata);
+ if (ret < 0) {
+ dev_err(tps->dev, "Init failed, err = %d\n", ret);
+ return ret;
+ }
+
+ /* Register the regulators */
+ config.dev = &client->dev;
+ config.init_data = pdata->reg_init_data;
+ config.driver_data = tps;
+ config.regmap = tps->regmap;
+ config.of_node = client->dev.of_node;
+
+ rdev = regulator_register(&tps->desc, &config);
+ if (IS_ERR(rdev)) {
+ dev_err(tps->dev, "regulator register failed\n");
+ return PTR_ERR(rdev);
+ }
+
+ tps->rdev = rdev;
+ return 0;
+}
+
+static int __devexit tps51632_remove(struct i2c_client *client)
+{
+ struct tps51632_chip *tps = i2c_get_clientdata(client);
+
+ regulator_unregister(tps->rdev);
+ return 0;
+}
+
+static const struct i2c_device_id tps51632_id[] = {
+ {.name = "tps51632",},
+ {},
+};
+
+MODULE_DEVICE_TABLE(i2c, tps51632_id);
+
+static struct i2c_driver tps51632_i2c_driver = {
+ .driver = {
+ .name = "tps51632",
+ .owner = THIS_MODULE,
+ },
+ .probe = tps51632_probe,
+ .remove = __devexit_p(tps51632_remove),
+ .id_table = tps51632_id,
+};
+
+static int __init tps51632_init(void)
+{
+ return i2c_add_driver(&tps51632_i2c_driver);
+}
+subsys_initcall(tps51632_init);
+
+static void __exit tps51632_cleanup(void)
+{
+ i2c_del_driver(&tps51632_i2c_driver);
+}
+module_exit(tps51632_cleanup);
+
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+MODULE_DESCRIPTION("TPS51632 voltage regulator driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c
index 001ad554ac6..412413838e1 100644
--- a/drivers/regulator/tps65090-regulator.c
+++ b/drivers/regulator/tps65090-regulator.c
@@ -18,67 +18,124 @@
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/tps65090.h>
-#include <linux/regulator/tps65090-regulator.h>
struct tps65090_regulator {
- int id;
- /* used by regulator core */
- struct regulator_desc desc;
-
- /* Device */
struct device *dev;
+ struct regulator_desc *desc;
+ struct regulator_dev *rdev;
+};
+
+static struct regulator_ops tps65090_ext_control_ops = {
+};
+
+static struct regulator_ops tps65090_reg_contol_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
};
-static struct regulator_ops tps65090_ops = {
- .enable = regulator_enable_regmap,
- .disable = regulator_disable_regmap,
- .is_enabled = regulator_is_enabled_regmap,
+static struct regulator_ops tps65090_ldo_ops = {
};
-#define tps65090_REG(_id) \
+#define tps65090_REG_DESC(_id, _sname, _en_reg, _ops) \
{ \
- .id = TPS65090_ID_##_id, \
- .desc = { \
- .name = tps65090_rails(_id), \
- .id = TPS65090_ID_##_id, \
- .ops = &tps65090_ops, \
- .type = REGULATOR_VOLTAGE, \
- .owner = THIS_MODULE, \
- .enable_reg = (TPS65090_ID_##_id) + 12, \
- .enable_mask = BIT(0), \
- }, \
+ .name = "TPS65090_RAILS"#_id, \
+ .supply_name = _sname, \
+ .id = TPS65090_REGULATOR_##_id, \
+ .ops = &_ops, \
+ .enable_reg = _en_reg, \
+ .enable_mask = BIT(0), \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
}
-static struct tps65090_regulator TPS65090_regulator[] = {
- tps65090_REG(DCDC1),
- tps65090_REG(DCDC2),
- tps65090_REG(DCDC3),
- tps65090_REG(FET1),
- tps65090_REG(FET2),
- tps65090_REG(FET3),
- tps65090_REG(FET4),
- tps65090_REG(FET5),
- tps65090_REG(FET6),
- tps65090_REG(FET7),
+static struct regulator_desc tps65090_regulator_desc[] = {
+ tps65090_REG_DESC(DCDC1, "vsys1", 0x0C, tps65090_reg_contol_ops),
+ tps65090_REG_DESC(DCDC2, "vsys2", 0x0D, tps65090_reg_contol_ops),
+ tps65090_REG_DESC(DCDC3, "vsys3", 0x0E, tps65090_reg_contol_ops),
+ tps65090_REG_DESC(FET1, "infet1", 0x0F, tps65090_reg_contol_ops),
+ tps65090_REG_DESC(FET2, "infet2", 0x10, tps65090_reg_contol_ops),
+ tps65090_REG_DESC(FET3, "infet3", 0x11, tps65090_reg_contol_ops),
+ tps65090_REG_DESC(FET4, "infet4", 0x12, tps65090_reg_contol_ops),
+ tps65090_REG_DESC(FET5, "infet5", 0x13, tps65090_reg_contol_ops),
+ tps65090_REG_DESC(FET6, "infet6", 0x14, tps65090_reg_contol_ops),
+ tps65090_REG_DESC(FET7, "infet7", 0x15, tps65090_reg_contol_ops),
+ tps65090_REG_DESC(LDO1, "vsys_l1", 0, tps65090_ldo_ops),
+ tps65090_REG_DESC(LDO2, "vsys_l2", 0, tps65090_ldo_ops),
};
-static inline struct tps65090_regulator *find_regulator_info(int id)
+static inline bool is_dcdc(int id)
{
- struct tps65090_regulator *ri;
- int i;
+ switch (id) {
+ case TPS65090_REGULATOR_DCDC1:
+ case TPS65090_REGULATOR_DCDC2:
+ case TPS65090_REGULATOR_DCDC3:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int __devinit tps65090_config_ext_control(
+ struct tps65090_regulator *ri, bool enable)
+{
+ int ret;
+ struct device *parent = ri->dev->parent;
+ unsigned int reg_en_reg = ri->desc->enable_reg;
+
+ if (enable)
+ ret = tps65090_set_bits(parent, reg_en_reg, 1);
+ else
+ ret = tps65090_clr_bits(parent, reg_en_reg, 1);
+ if (ret < 0)
+ dev_err(ri->dev, "Error in updating reg 0x%x\n", reg_en_reg);
+ return ret;
+}
+
+static int __devinit tps65090_regulator_disable_ext_control(
+ struct tps65090_regulator *ri,
+ struct tps65090_regulator_plat_data *tps_pdata)
+{
+ int ret = 0;
+ struct device *parent = ri->dev->parent;
+ unsigned int reg_en_reg = ri->desc->enable_reg;
+
+ /*
+ * First enable output for internal control if require.
+ * And then disable external control.
+ */
+ if (tps_pdata->reg_init_data->constraints.always_on ||
+ tps_pdata->reg_init_data->constraints.boot_on) {
+ ret = tps65090_set_bits(parent, reg_en_reg, 0);
+ if (ret < 0) {
+ dev_err(ri->dev, "Error in set reg 0x%x\n", reg_en_reg);
+ return ret;
+ }
+ }
+ return tps65090_config_ext_control(ri, false);
+}
+
+static void __devinit tps65090_configure_regulator_config(
+ struct tps65090_regulator_plat_data *tps_pdata,
+ struct regulator_config *config)
+{
+ if (gpio_is_valid(tps_pdata->gpio)) {
+ int gpio_flag = GPIOF_OUT_INIT_LOW;
+
+ if (tps_pdata->reg_init_data->constraints.always_on ||
+ tps_pdata->reg_init_data->constraints.boot_on)
+ gpio_flag = GPIOF_OUT_INIT_HIGH;
- for (i = 0; i < ARRAY_SIZE(TPS65090_regulator); i++) {
- ri = &TPS65090_regulator[i];
- if (ri->desc.id == id)
- return ri;
+ config->ena_gpio = tps_pdata->gpio;
+ config->ena_gpio_flags = gpio_flag;
}
- return NULL;
}
static int __devinit tps65090_regulator_probe(struct platform_device *pdev)
@@ -87,46 +144,110 @@ static int __devinit tps65090_regulator_probe(struct platform_device *pdev)
struct tps65090_regulator *ri = NULL;
struct regulator_config config = { };
struct regulator_dev *rdev;
- struct tps65090_regulator_platform_data *tps_pdata;
- int id = pdev->id;
+ struct tps65090_regulator_plat_data *tps_pdata;
+ struct tps65090_regulator *pmic;
+ struct tps65090_platform_data *tps65090_pdata;
+ int num;
+ int ret;
- dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
+ dev_dbg(&pdev->dev, "Probing regulator\n");
- ri = find_regulator_info(id);
- if (ri == NULL) {
- dev_err(&pdev->dev, "invalid regulator ID specified\n");
+ tps65090_pdata = dev_get_platdata(pdev->dev.parent);
+ if (!tps65090_pdata) {
+ dev_err(&pdev->dev, "Platform data missing\n");
return -EINVAL;
}
- tps_pdata = pdev->dev.platform_data;
- ri->dev = &pdev->dev;
-
- config.dev = &pdev->dev;
- config.init_data = &tps_pdata->regulator;
- config.driver_data = ri;
- config.regmap = tps65090_mfd->rmap;
-
- rdev = regulator_register(&ri->desc, &config);
- if (IS_ERR(rdev)) {
- dev_err(&pdev->dev, "failed to register regulator %s\n",
- ri->desc.name);
- return PTR_ERR(rdev);
+
+ pmic = devm_kzalloc(&pdev->dev, TPS65090_REGULATOR_MAX * sizeof(*pmic),
+ GFP_KERNEL);
+ if (!pmic) {
+ dev_err(&pdev->dev, "mem alloc for pmic failed\n");
+ return -ENOMEM;
+ }
+
+ for (num = 0; num < TPS65090_REGULATOR_MAX; num++) {
+ tps_pdata = tps65090_pdata->reg_pdata[num];
+
+ ri = &pmic[num];
+ ri->dev = &pdev->dev;
+ ri->desc = &tps65090_regulator_desc[num];
+
+ /*
+ * TPS5090 DCDC support the control from external digital input.
+ * Configure it as per platform data.
+ */
+ if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data) {
+ if (tps_pdata->enable_ext_control) {
+ tps65090_configure_regulator_config(
+ tps_pdata, &config);
+ ri->desc->ops = &tps65090_ext_control_ops;
+ } else {
+ ret = tps65090_regulator_disable_ext_control(
+ ri, tps_pdata);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "failed disable ext control\n");
+ goto scrub;
+ }
+ }
+ }
+
+ config.dev = &pdev->dev;
+ config.driver_data = ri;
+ config.regmap = tps65090_mfd->rmap;
+ if (tps_pdata)
+ config.init_data = tps_pdata->reg_init_data;
+ else
+ config.init_data = NULL;
+
+ rdev = regulator_register(ri->desc, &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "failed to register regulator %s\n",
+ ri->desc->name);
+ ret = PTR_ERR(rdev);
+ goto scrub;
+ }
+ ri->rdev = rdev;
+
+ /* Enable external control if it is require */
+ if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data &&
+ tps_pdata->enable_ext_control) {
+ ret = tps65090_config_ext_control(ri, true);
+ if (ret < 0) {
+ /* Increment num to get unregister rdev */
+ num++;
+ goto scrub;
+ }
+ }
}
- platform_set_drvdata(pdev, rdev);
+ platform_set_drvdata(pdev, pmic);
return 0;
+
+scrub:
+ while (--num >= 0) {
+ ri = &pmic[num];
+ regulator_unregister(ri->rdev);
+ }
+ return ret;
}
static int __devexit tps65090_regulator_remove(struct platform_device *pdev)
{
- struct regulator_dev *rdev = platform_get_drvdata(pdev);
+ struct tps65090_regulator *pmic = platform_get_drvdata(pdev);
+ struct tps65090_regulator *ri;
+ int num;
- regulator_unregister(rdev);
+ for (num = 0; num < TPS65090_REGULATOR_MAX; ++num) {
+ ri = &pmic[num];
+ regulator_unregister(ri->rdev);
+ }
return 0;
}
static struct platform_driver tps65090_regulator_driver = {
.driver = {
- .name = "tps65090-regulator",
+ .name = "tps65090-pmic",
.owner = THIS_MODULE,
},
.probe = tps65090_regulator_probe,
diff --git a/drivers/regulator/tps80031-regulator.c b/drivers/regulator/tps80031-regulator.c
new file mode 100644
index 00000000000..a37ede80abb
--- /dev/null
+++ b/drivers/regulator/tps80031-regulator.c
@@ -0,0 +1,793 @@
+/*
+ * tps80031-regulator.c -- TI TPS80031 regulator driver.
+ *
+ * Regulator driver for TITPS80031/TPS80032 Fully Integrated Power
+ * Management with Power Path and Battery Charger.
+ *
+ * Copyright (c) 2012, NVIDIA Corporation.
+ *
+ * Author: Laxman Dewangan <ldewangan@nvidia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307, USA
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/mfd/tps80031.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/slab.h>
+
+/* Flags for DCDC Voltage reading */
+#define DCDC_OFFSET_EN BIT(0)
+#define DCDC_EXTENDED_EN BIT(1)
+#define TRACK_MODE_ENABLE BIT(2)
+
+#define SMPS_MULTOFFSET_VIO BIT(1)
+#define SMPS_MULTOFFSET_SMPS1 BIT(3)
+#define SMPS_MULTOFFSET_SMPS2 BIT(4)
+#define SMPS_MULTOFFSET_SMPS3 BIT(6)
+#define SMPS_MULTOFFSET_SMPS4 BIT(0)
+
+#define SMPS_CMD_MASK 0xC0
+#define SMPS_VSEL_MASK 0x3F
+#define LDO_VSEL_MASK 0x1F
+#define LDO_TRACK_VSEL_MASK 0x3F
+
+#define MISC2_LDOUSB_IN_VSYS BIT(4)
+#define MISC2_LDOUSB_IN_PMID BIT(3)
+#define MISC2_LDOUSB_IN_MASK 0x18
+
+#define MISC2_LDO3_SEL_VIB_VAL BIT(0)
+#define MISC2_LDO3_SEL_VIB_MASK 0x1
+
+#define BOOST_HW_PWR_EN BIT(5)
+#define BOOST_HW_PWR_EN_MASK BIT(5)
+
+#define OPA_MODE_EN BIT(6)
+#define OPA_MODE_EN_MASK BIT(6)
+
+#define USB_VBUS_CTRL_SET 0x04
+#define USB_VBUS_CTRL_CLR 0x05
+#define VBUS_DISCHRG 0x20
+
+struct tps80031_regulator_info {
+ /* Regulator register address.*/
+ u8 trans_reg;
+ u8 state_reg;
+ u8 force_reg;
+ u8 volt_reg;
+ u8 volt_id;
+
+ /*Power request bits */
+ int preq_bit;
+
+ /* used by regulator core */
+ struct regulator_desc desc;
+
+};
+
+struct tps80031_regulator {
+ struct device *dev;
+ struct regulator_dev *rdev;
+ struct tps80031_regulator_info *rinfo;
+
+ u8 device_flags;
+ unsigned int config_flags;
+ unsigned int ext_ctrl_flag;
+};
+
+static inline struct device *to_tps80031_dev(struct regulator_dev *rdev)
+{
+ return rdev_get_dev(rdev)->parent->parent;
+}
+
+static int tps80031_reg_is_enabled(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ u8 reg_val;
+ int ret;
+
+ if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ)
+ return true;
+
+ ret = tps80031_read(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg,
+ &reg_val);
+ if (ret < 0) {
+ dev_err(&rdev->dev, "Reg 0x%02x read failed, err = %d\n",
+ ri->rinfo->state_reg, ret);
+ return ret;
+ }
+ return ((reg_val & TPS80031_STATE_MASK) == TPS80031_STATE_ON);
+}
+
+static int tps80031_reg_enable(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret;
+
+ if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ)
+ return 0;
+
+ ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg,
+ TPS80031_STATE_ON, TPS80031_STATE_MASK);
+ if (ret < 0) {
+ dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n",
+ ri->rinfo->state_reg, ret);
+ return ret;
+ }
+ return ret;
+}
+
+static int tps80031_reg_disable(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret;
+
+ if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ)
+ return 0;
+
+ ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg,
+ TPS80031_STATE_OFF, TPS80031_STATE_MASK);
+ if (ret < 0)
+ dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n",
+ ri->rinfo->state_reg, ret);
+ return ret;
+}
+
+/* DCDC voltages for the selector of 58 to 63 */
+static int tps80031_dcdc_voltages[4][5] = {
+ { 1350, 1500, 1800, 1900, 2100},
+ { 1350, 1500, 1800, 1900, 2100},
+ { 2084, 2315, 2778, 2932, 3241},
+ { 4167, 2315, 2778, 2932, 3241},
+};
+
+static int tps80031_dcdc_list_voltage(struct regulator_dev *rdev, unsigned sel)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ int volt_index = ri->device_flags & 0x3;
+
+ if (sel == 0)
+ return 0;
+ else if (sel < 58)
+ return regulator_list_voltage_linear(rdev, sel - 1);
+ else
+ return tps80031_dcdc_voltages[volt_index][sel - 58] * 1000;
+}
+
+static int tps80031_dcdc_set_voltage_sel(struct regulator_dev *rdev,
+ unsigned vsel)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret;
+ u8 reg_val;
+
+ if (ri->rinfo->force_reg) {
+ ret = tps80031_read(parent, ri->rinfo->volt_id,
+ ri->rinfo->force_reg, &reg_val);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ ri->rinfo->force_reg, ret);
+ return ret;
+ }
+ if (!(reg_val & SMPS_CMD_MASK)) {
+ ret = tps80031_update(parent, ri->rinfo->volt_id,
+ ri->rinfo->force_reg, vsel, SMPS_VSEL_MASK);
+ if (ret < 0)
+ dev_err(ri->dev,
+ "reg 0x%02x update failed, e = %d\n",
+ ri->rinfo->force_reg, ret);
+ return ret;
+ }
+ }
+ ret = tps80031_update(parent, ri->rinfo->volt_id,
+ ri->rinfo->volt_reg, vsel, SMPS_VSEL_MASK);
+ if (ret < 0)
+ dev_err(ri->dev, "reg 0x%02x update failed, e = %d\n",
+ ri->rinfo->volt_reg, ret);
+ return ret;
+}
+
+static int tps80031_dcdc_get_voltage_sel(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ uint8_t vsel = 0;
+ int ret;
+
+ if (ri->rinfo->force_reg) {
+ ret = tps80031_read(parent, ri->rinfo->volt_id,
+ ri->rinfo->force_reg, &vsel);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ ri->rinfo->force_reg, ret);
+ return ret;
+ }
+
+ if (!(vsel & SMPS_CMD_MASK))
+ return vsel & SMPS_VSEL_MASK;
+ }
+ ret = tps80031_read(parent, ri->rinfo->volt_id,
+ ri->rinfo->volt_reg, &vsel);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ ri->rinfo->volt_reg, ret);
+ return ret;
+ }
+ return vsel & SMPS_VSEL_MASK;
+}
+
+static int tps80031_ldo_set_voltage_sel(struct regulator_dev *rdev,
+ unsigned sel)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret;
+
+ /* Check for valid setting for TPS80031 or TPS80032-ES1.0 */
+ if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) &&
+ (ri->device_flags & TRACK_MODE_ENABLE)) {
+ unsigned nvsel = (sel) & 0x1F;
+ if (((tps80031_get_chip_info(parent) == TPS80031) ||
+ ((tps80031_get_chip_info(parent) == TPS80032) &&
+ (tps80031_get_pmu_version(parent) == 0x0))) &&
+ ((nvsel == 0x0) || (nvsel >= 0x19 && nvsel <= 0x1F))) {
+ dev_err(ri->dev,
+ "Invalid sel %d in track mode LDO2\n",
+ nvsel);
+ return -EINVAL;
+ }
+ }
+
+ ret = tps80031_write(parent, ri->rinfo->volt_id,
+ ri->rinfo->volt_reg, sel);
+ if (ret < 0)
+ dev_err(ri->dev, "Error in writing reg 0x%02x, e = %d\n",
+ ri->rinfo->volt_reg, ret);
+ return ret;
+}
+
+static int tps80031_ldo_get_voltage_sel(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ uint8_t vsel;
+ int ret;
+
+ ret = tps80031_read(parent, ri->rinfo->volt_id,
+ ri->rinfo->volt_reg, &vsel);
+ if (ret < 0) {
+ dev_err(ri->dev, "Error in writing the Voltage register\n");
+ return ret;
+ }
+ return vsel & rdev->desc->vsel_mask;
+}
+
+static int tps80031_ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
+{
+ if (sel == 0)
+ return 0;
+ else
+ return regulator_list_voltage_linear(rdev, sel - 1);
+}
+
+static int tps80031_vbus_is_enabled(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret = -EIO;
+ uint8_t ctrl1 = 0;
+ uint8_t ctrl3 = 0;
+
+ ret = tps80031_read(parent, TPS80031_SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL1, &ctrl1);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL1, ret);
+ return ret;
+ }
+ ret = tps80031_read(parent, TPS80031_SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL3, &ctrl3);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL1, ret);
+ return ret;
+ }
+ if ((ctrl1 & OPA_MODE_EN) && (ctrl3 & BOOST_HW_PWR_EN))
+ return 1;
+ return ret;
+}
+
+static int tps80031_vbus_enable(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret;
+
+ ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL1, ret);
+ return ret;
+ }
+
+ ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL3, ret);
+ return ret;
+ }
+ return ret;
+}
+
+static int tps80031_vbus_disable(struct regulator_dev *rdev)
+{
+ struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
+ struct device *parent = to_tps80031_dev(rdev);
+ int ret = 0;
+
+ if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) {
+ ret = tps80031_write(parent, TPS80031_SLAVE_ID2,
+ USB_VBUS_CTRL_SET, VBUS_DISCHRG);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n",
+ USB_VBUS_CTRL_SET, ret);
+ return ret;
+ }
+ }
+
+ ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL1, ret);
+ return ret;
+ }
+
+ ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2,
+ TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n",
+ TPS80031_CHARGERUSB_CTRL3, ret);
+ return ret;
+ }
+
+ mdelay(DIV_ROUND_UP(ri->rinfo->desc.enable_time, 1000));
+ if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) {
+ ret = tps80031_write(parent, TPS80031_SLAVE_ID2,
+ USB_VBUS_CTRL_CLR, VBUS_DISCHRG);
+ if (ret < 0) {
+ dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n",
+ USB_VBUS_CTRL_CLR, ret);
+ return ret;
+ }
+ }
+ return ret;
+}
+
+static struct regulator_ops tps80031_dcdc_ops = {
+ .list_voltage = tps80031_dcdc_list_voltage,
+ .set_voltage_sel = tps80031_dcdc_set_voltage_sel,
+ .get_voltage_sel = tps80031_dcdc_get_voltage_sel,
+ .enable = tps80031_reg_enable,
+ .disable = tps80031_reg_disable,
+ .is_enabled = tps80031_reg_is_enabled,
+};
+
+static struct regulator_ops tps80031_ldo_ops = {
+ .list_voltage = tps80031_ldo_list_voltage,
+ .set_voltage_sel = tps80031_ldo_set_voltage_sel,
+ .get_voltage_sel = tps80031_ldo_get_voltage_sel,
+ .enable = tps80031_reg_enable,
+ .disable = tps80031_reg_disable,
+ .is_enabled = tps80031_reg_is_enabled,
+};
+
+static struct regulator_ops tps80031_vbus_sw_ops = {
+ .enable = tps80031_vbus_enable,
+ .disable = tps80031_vbus_disable,
+ .is_enabled = tps80031_vbus_is_enabled,
+};
+
+static struct regulator_ops tps80031_vbus_hw_ops = {
+};
+
+static struct regulator_ops tps80031_ext_reg_ops = {
+ .enable = tps80031_reg_enable,
+ .disable = tps80031_reg_disable,
+ .is_enabled = tps80031_reg_is_enabled,
+};
+
+/* Non-exiting default definition for some register */
+#define TPS80031_SMPS3_CFG_FORCE 0
+#define TPS80031_SMPS4_CFG_FORCE 0
+
+#define TPS80031_VBUS_CFG_TRANS 0
+#define TPS80031_VBUS_CFG_STATE 0
+
+#define TPS80031_REG_SMPS(_id, _volt_id, _pbit) \
+{ \
+ .trans_reg = TPS80031_##_id##_CFG_TRANS, \
+ .state_reg = TPS80031_##_id##_CFG_STATE, \
+ .force_reg = TPS80031_##_id##_CFG_FORCE, \
+ .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \
+ .volt_id = TPS80031_SLAVE_##_volt_id, \
+ .preq_bit = _pbit, \
+ .desc = { \
+ .name = "tps80031_"#_id, \
+ .id = TPS80031_REGULATOR_##_id, \
+ .n_voltages = 63, \
+ .ops = &tps80031_dcdc_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .enable_time = 500, \
+ }, \
+}
+
+#define TPS80031_REG_LDO(_id, _preq_bit) \
+{ \
+ .trans_reg = TPS80031_##_id##_CFG_TRANS, \
+ .state_reg = TPS80031_##_id##_CFG_STATE, \
+ .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \
+ .volt_id = TPS80031_SLAVE_ID1, \
+ .preq_bit = _preq_bit, \
+ .desc = { \
+ .owner = THIS_MODULE, \
+ .name = "tps80031_"#_id, \
+ .id = TPS80031_REGULATOR_##_id, \
+ .ops = &tps80031_ldo_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .min_uV = 1000000, \
+ .uV_step = 100000, \
+ .n_voltages = 25, \
+ .vsel_mask = LDO_VSEL_MASK, \
+ .enable_time = 500, \
+ }, \
+}
+
+#define TPS80031_REG_FIXED(_id, max_mV, _ops, _delay, _pbit) \
+{ \
+ .trans_reg = TPS80031_##_id##_CFG_TRANS, \
+ .state_reg = TPS80031_##_id##_CFG_STATE, \
+ .volt_id = TPS80031_SLAVE_ID1, \
+ .preq_bit = _pbit, \
+ .desc = { \
+ .name = "tps80031_"#_id, \
+ .id = TPS80031_REGULATOR_##_id, \
+ .n_voltages = 2, \
+ .ops = &_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .enable_time = _delay, \
+ }, \
+}
+
+static struct tps80031_regulator_info tps80031_rinfo[TPS80031_REGULATOR_MAX] = {
+ TPS80031_REG_SMPS(VIO, ID0, 4),
+ TPS80031_REG_SMPS(SMPS1, ID0, 0),
+ TPS80031_REG_SMPS(SMPS2, ID0, 1),
+ TPS80031_REG_SMPS(SMPS3, ID1, 2),
+ TPS80031_REG_SMPS(SMPS4, ID1, 3),
+ TPS80031_REG_LDO(VANA, -1),
+ TPS80031_REG_LDO(LDO1, 8),
+ TPS80031_REG_LDO(LDO2, 9),
+ TPS80031_REG_LDO(LDO3, 10),
+ TPS80031_REG_LDO(LDO4, 11),
+ TPS80031_REG_LDO(LDO5, 12),
+ TPS80031_REG_LDO(LDO6, 13),
+ TPS80031_REG_LDO(LDO7, 14),
+ TPS80031_REG_LDO(LDOLN, 15),
+ TPS80031_REG_LDO(LDOUSB, 5),
+ TPS80031_REG_FIXED(VBUS, 5000, tps80031_vbus_hw_ops, 100000, -1),
+ TPS80031_REG_FIXED(REGEN1, 3300, tps80031_ext_reg_ops, 0, 16),
+ TPS80031_REG_FIXED(REGEN2, 3300, tps80031_ext_reg_ops, 0, 17),
+ TPS80031_REG_FIXED(SYSEN, 3300, tps80031_ext_reg_ops, 0, 18),
+};
+
+static int tps80031_power_req_config(struct device *parent,
+ struct tps80031_regulator *ri,
+ struct tps80031_regulator_platform_data *tps80031_pdata)
+{
+ int ret = 0;
+
+ if (ri->rinfo->preq_bit < 0)
+ goto skip_pwr_req_config;
+
+ ret = tps80031_ext_power_req_config(parent, ri->ext_ctrl_flag,
+ ri->rinfo->preq_bit, ri->rinfo->state_reg,
+ ri->rinfo->trans_reg);
+ if (ret < 0) {
+ dev_err(ri->dev, "ext powerreq config failed, err = %d\n", ret);
+ return ret;
+ }
+
+skip_pwr_req_config:
+ if (tps80031_pdata->ext_ctrl_flag & TPS80031_PWR_ON_ON_SLEEP) {
+ ret = tps80031_update(parent, TPS80031_SLAVE_ID1,
+ ri->rinfo->trans_reg, TPS80031_TRANS_SLEEP_ON,
+ TPS80031_TRANS_SLEEP_MASK);
+ if (ret < 0) {
+ dev_err(ri->dev, "Reg 0x%02x update failed, e %d\n",
+ ri->rinfo->trans_reg, ret);
+ return ret;
+ }
+ }
+ return ret;
+}
+
+static int tps80031_regulator_config(struct device *parent,
+ struct tps80031_regulator *ri,
+ struct tps80031_regulator_platform_data *tps80031_pdata)
+{
+ int ret = 0;
+
+ switch (ri->rinfo->desc.id) {
+ case TPS80031_REGULATOR_LDOUSB:
+ if (ri->config_flags & (TPS80031_USBLDO_INPUT_VSYS |
+ TPS80031_USBLDO_INPUT_PMID)) {
+ unsigned val = 0;
+ if (ri->config_flags & TPS80031_USBLDO_INPUT_VSYS)
+ val = MISC2_LDOUSB_IN_VSYS;
+ else
+ val = MISC2_LDOUSB_IN_PMID;
+
+ ret = tps80031_update(parent, TPS80031_SLAVE_ID1,
+ TPS80031_MISC2, val,
+ MISC2_LDOUSB_IN_MASK);
+ if (ret < 0) {
+ dev_err(ri->dev,
+ "LDOUSB config failed, e= %d\n", ret);
+ return ret;
+ }
+ }
+ break;
+
+ case TPS80031_REGULATOR_LDO3:
+ if (ri->config_flags & TPS80031_LDO3_OUTPUT_VIB) {
+ ret = tps80031_update(parent, TPS80031_SLAVE_ID1,
+ TPS80031_MISC2, MISC2_LDO3_SEL_VIB_VAL,
+ MISC2_LDO3_SEL_VIB_MASK);
+ if (ret < 0) {
+ dev_err(ri->dev,
+ "LDO3 config failed, e = %d\n", ret);
+ return ret;
+ }
+ }
+ break;
+
+ case TPS80031_REGULATOR_VBUS:
+ /* Provide SW control Ops if VBUS is SW control */
+ if (!(ri->config_flags & TPS80031_VBUS_SW_ONLY))
+ ri->rinfo->desc.ops = &tps80031_vbus_sw_ops;
+ break;
+ default:
+ break;
+ }
+
+ /* Configure Active state to ON, SLEEP to OFF and OFF_state to OFF */
+ ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->trans_reg,
+ TPS80031_TRANS_ACTIVE_ON | TPS80031_TRANS_SLEEP_OFF |
+ TPS80031_TRANS_OFF_OFF, TPS80031_TRANS_ACTIVE_MASK |
+ TPS80031_TRANS_SLEEP_MASK | TPS80031_TRANS_OFF_MASK);
+ if (ret < 0) {
+ dev_err(ri->dev, "trans reg update failed, e %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int check_smps_mode_mult(struct device *parent,
+ struct tps80031_regulator *ri)
+{
+ int mult_offset;
+ int ret;
+ u8 smps_offset;
+ u8 smps_mult;
+
+ ret = tps80031_read(parent, TPS80031_SLAVE_ID1,
+ TPS80031_SMPS_OFFSET, &smps_offset);
+ if (ret < 0) {
+ dev_err(parent, "Error in reading smps offset register\n");
+ return ret;
+ }
+
+ ret = tps80031_read(parent, TPS80031_SLAVE_ID1,
+ TPS80031_SMPS_MULT, &smps_mult);
+ if (ret < 0) {
+ dev_err(parent, "Error in reading smps mult register\n");
+ return ret;
+ }
+
+ switch (ri->rinfo->desc.id) {
+ case TPS80031_REGULATOR_VIO:
+ mult_offset = SMPS_MULTOFFSET_VIO;
+ break;
+ case TPS80031_REGULATOR_SMPS1:
+ mult_offset = SMPS_MULTOFFSET_SMPS1;
+ break;
+ case TPS80031_REGULATOR_SMPS2:
+ mult_offset = SMPS_MULTOFFSET_SMPS2;
+ break;
+ case TPS80031_REGULATOR_SMPS3:
+ mult_offset = SMPS_MULTOFFSET_SMPS3;
+ break;
+ case TPS80031_REGULATOR_SMPS4:
+ mult_offset = SMPS_MULTOFFSET_SMPS4;
+ break;
+ case TPS80031_REGULATOR_LDO2:
+ ri->device_flags = smps_mult & BIT(5) ? TRACK_MODE_ENABLE : 0;
+ /* TRACK mode the ldo2 varies from 600mV to 1300mV */
+ if (ri->device_flags & TRACK_MODE_ENABLE) {
+ ri->rinfo->desc.min_uV = 600000;
+ ri->rinfo->desc.uV_step = 12500;
+ ri->rinfo->desc.n_voltages = 57;
+ ri->rinfo->desc.vsel_mask = LDO_TRACK_VSEL_MASK;
+ }
+ return 0;
+ default:
+ return 0;
+ }
+
+ ri->device_flags = (smps_offset & mult_offset) ? DCDC_OFFSET_EN : 0;
+ ri->device_flags |= (smps_mult & mult_offset) ? DCDC_EXTENDED_EN : 0;
+ switch (ri->device_flags) {
+ case 0:
+ ri->rinfo->desc.min_uV = 607700;
+ ri->rinfo->desc.uV_step = 12660;
+ break;
+ case DCDC_OFFSET_EN:
+ ri->rinfo->desc.min_uV = 700000;
+ ri->rinfo->desc.uV_step = 12500;
+ break;
+ case DCDC_EXTENDED_EN:
+ ri->rinfo->desc.min_uV = 1852000;
+ ri->rinfo->desc.uV_step = 38600;
+ break;
+ case DCDC_OFFSET_EN | DCDC_EXTENDED_EN:
+ ri->rinfo->desc.min_uV = 2161000;
+ ri->rinfo->desc.uV_step = 38600;
+ break;
+ }
+ return 0;
+}
+
+static int __devinit tps80031_regulator_probe(struct platform_device *pdev)
+{
+ struct tps80031_platform_data *pdata;
+ struct tps80031_regulator_platform_data *tps_pdata;
+ struct tps80031_regulator_info *rinfo;
+ struct tps80031_regulator *ri;
+ struct tps80031_regulator *pmic;
+ struct regulator_dev *rdev;
+ struct regulator_config config = { };
+ int ret;
+ int num;
+
+ pdata = dev_get_platdata(pdev->dev.parent);
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "No platform data\n");
+ return -EINVAL;
+ }
+
+ pmic = devm_kzalloc(&pdev->dev,
+ TPS80031_REGULATOR_MAX * sizeof(*pmic), GFP_KERNEL);
+ if (!pmic) {
+ dev_err(&pdev->dev, "mem alloc for pmic failed\n");
+ return -ENOMEM;
+ }
+
+ for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) {
+ tps_pdata = pdata->regulator_pdata[num];
+ rinfo = &tps80031_rinfo[num];
+ ri = &pmic[num];
+ ri->rinfo = rinfo;
+ ri->dev = &pdev->dev;
+
+ check_smps_mode_mult(pdev->dev.parent, ri);
+ config.dev = &pdev->dev;
+ config.init_data = NULL;
+ config.driver_data = ri;
+ if (tps_pdata) {
+ config.init_data = tps_pdata->reg_init_data;
+ ri->config_flags = tps_pdata->config_flags;
+ ri->ext_ctrl_flag = tps_pdata->ext_ctrl_flag;
+ ret = tps80031_regulator_config(pdev->dev.parent,
+ ri, tps_pdata);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "regulator config failed, e %d\n", ret);
+ goto fail;
+ }
+
+ ret = tps80031_power_req_config(pdev->dev.parent,
+ ri, tps_pdata);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "pwr_req config failed, err %d\n", ret);
+ goto fail;
+ }
+ }
+ rdev = regulator_register(&ri->rinfo->desc, &config);
+ if (IS_ERR_OR_NULL(rdev)) {
+ dev_err(&pdev->dev,
+ "register regulator failed %s\n",
+ ri->rinfo->desc.name);
+ ret = PTR_ERR(rdev);
+ goto fail;
+ }
+ ri->rdev = rdev;
+ }
+
+ platform_set_drvdata(pdev, pmic);
+ return 0;
+fail:
+ while (--num >= 0) {
+ ri = &pmic[num];
+ regulator_unregister(ri->rdev);
+ }
+ return ret;
+}
+
+static int __devexit tps80031_regulator_remove(struct platform_device *pdev)
+{
+ struct tps80031_regulator *pmic = platform_get_drvdata(pdev);
+ struct tps80031_regulator *ri = NULL;
+ int num;
+
+ for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) {
+ ri = &pmic[num];
+ regulator_unregister(ri->rdev);
+ }
+ return 0;
+}
+
+static struct platform_driver tps80031_regulator_driver = {
+ .driver = {
+ .name = "tps80031-pmic",
+ .owner = THIS_MODULE,
+ },
+ .probe = tps80031_regulator_probe,
+ .remove = __devexit_p(tps80031_regulator_remove),
+};
+
+static int __init tps80031_regulator_init(void)
+{
+ return platform_driver_register(&tps80031_regulator_driver);
+}
+subsys_initcall(tps80031_regulator_init);
+
+static void __exit tps80031_regulator_exit(void)
+{
+ platform_driver_unregister(&tps80031_regulator_driver);
+}
+module_exit(tps80031_regulator_exit);
+
+MODULE_ALIAS("platform:tps80031-regulator");
+MODULE_DESCRIPTION("Regulator Driver for TI TPS80031 PMIC");
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/regulator/vexpress.c b/drivers/regulator/vexpress.c
new file mode 100644
index 00000000000..1d558111d60
--- /dev/null
+++ b/drivers/regulator/vexpress.c
@@ -0,0 +1,147 @@
+/*
+ * 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.
+ *
+ * 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.
+ *
+ * Copyright (C) 2012 ARM Limited
+ */
+
+#define DRVNAME "vexpress-regulator"
+#define pr_fmt(fmt) DRVNAME ": " fmt
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/vexpress.h>
+
+struct vexpress_regulator {
+ struct regulator_desc desc;
+ struct regulator_dev *regdev;
+ struct vexpress_config_func *func;
+};
+
+static int vexpress_regulator_get_voltage(struct regulator_dev *regdev)
+{
+ struct vexpress_regulator *reg = rdev_get_drvdata(regdev);
+ u32 uV;
+ int err = vexpress_config_read(reg->func, 0, &uV);
+
+ return err ? err : uV;
+}
+
+static int vexpress_regulator_set_voltage(struct regulator_dev *regdev,
+ int min_uV, int max_uV, unsigned *selector)
+{
+ struct vexpress_regulator *reg = rdev_get_drvdata(regdev);
+
+ return vexpress_config_write(reg->func, 0, min_uV);
+}
+
+static struct regulator_ops vexpress_regulator_ops_ro = {
+ .get_voltage = vexpress_regulator_get_voltage,
+};
+
+static struct regulator_ops vexpress_regulator_ops = {
+ .get_voltage = vexpress_regulator_get_voltage,
+ .set_voltage = vexpress_regulator_set_voltage,
+};
+
+static int vexpress_regulator_probe(struct platform_device *pdev)
+{
+ int err;
+ struct vexpress_regulator *reg;
+ struct regulator_init_data *init_data;
+ struct regulator_config config = { };
+
+ reg = devm_kzalloc(&pdev->dev, sizeof(*reg), GFP_KERNEL);
+ if (!reg) {
+ err = -ENOMEM;
+ goto error_kzalloc;
+ }
+
+ reg->func = vexpress_config_func_get_by_dev(&pdev->dev);
+ if (!reg->func) {
+ err = -ENXIO;
+ goto error_get_func;
+ }
+
+ reg->desc.name = dev_name(&pdev->dev);
+ reg->desc.type = REGULATOR_VOLTAGE;
+ reg->desc.owner = THIS_MODULE;
+ reg->desc.continuous_voltage_range = true;
+
+ init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node);
+ if (!init_data) {
+ err = -EINVAL;
+ goto error_get_regulator_init_data;
+ }
+
+ init_data->constraints.apply_uV = 0;
+ if (init_data->constraints.min_uV && init_data->constraints.max_uV)
+ reg->desc.ops = &vexpress_regulator_ops;
+ else
+ reg->desc.ops = &vexpress_regulator_ops_ro;
+
+ config.dev = &pdev->dev;
+ config.init_data = init_data;
+ config.driver_data = reg;
+ config.of_node = pdev->dev.of_node;
+
+ reg->regdev = regulator_register(&reg->desc, &config);
+ if (IS_ERR(reg->regdev)) {
+ err = PTR_ERR(reg->regdev);
+ goto error_regulator_register;
+ }
+
+ platform_set_drvdata(pdev, reg);
+
+ return 0;
+
+error_regulator_register:
+error_get_regulator_init_data:
+ vexpress_config_func_put(reg->func);
+error_get_func:
+error_kzalloc:
+ return err;
+}
+
+static int __devexit vexpress_regulator_remove(struct platform_device *pdev)
+{
+ struct vexpress_regulator *reg = platform_get_drvdata(pdev);
+
+ vexpress_config_func_put(reg->func);
+ regulator_unregister(reg->regdev);
+
+ return 0;
+}
+
+static struct of_device_id vexpress_regulator_of_match[] = {
+ { .compatible = "arm,vexpress-volt", },
+ { }
+};
+
+static struct platform_driver vexpress_regulator_driver = {
+ .probe = vexpress_regulator_probe,
+ .remove = __devexit_p(vexpress_regulator_remove),
+ .driver = {
+ .name = DRVNAME,
+ .owner = THIS_MODULE,
+ .of_match_table = vexpress_regulator_of_match,
+ },
+};
+
+module_platform_driver(vexpress_regulator_driver);
+
+MODULE_AUTHOR("Pawel Moll <pawel.moll@arm.com>");
+MODULE_DESCRIPTION("Versatile Express regulator");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:vexpress-regulator");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-23 23:55:47 +0000