summaryrefslogtreecommitdiff
path: root/drivers/regulator
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/Kconfig8
-rw-r--r--drivers/regulator/Makefile1
-rw-r--r--drivers/regulator/core.c154
-rw-r--r--drivers/regulator/dbx500-prcmu.c18
-rw-r--r--drivers/regulator/devres.c7
-rw-r--r--drivers/regulator/hi6421-regulator.c3
-rw-r--r--drivers/regulator/ltc3676.c420
-rw-r--r--drivers/regulator/max14577-regulator.c4
-rw-r--r--drivers/regulator/max77693-regulator.c4
-rw-r--r--drivers/regulator/pwm-regulator.c10
-rw-r--r--drivers/regulator/qcom_smd-regulator.c30
-rw-r--r--drivers/regulator/rk808-regulator.c3
-rw-r--r--drivers/regulator/tps65218-regulator.c8
-rw-r--r--drivers/regulator/tps65910-regulator.c6
14 files changed, 560 insertions, 116 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 6c88e31c01f7..527bd6a51ef8 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -353,6 +353,14 @@ config REGULATOR_LTC3589
This enables support for the LTC3589, LTC3589-1, and LTC3589-2
8-output regulators controlled via I2C.
+config REGULATOR_LTC3676
+ tristate "LTC3676 8-output voltage regulator"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ This enables support for the LTC3676
+ 8-output regulators controlled via I2C.
+
config REGULATOR_MAX14577
tristate "Maxim 14577/77836 regulator"
depends on MFD_MAX14577
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index f3da9eea9ab6..2142a5d3fc08 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -47,6 +47,7 @@ obj-$(CONFIG_REGULATOR_LP8788) += lp8788-buck.o
obj-$(CONFIG_REGULATOR_LP8788) += lp8788-ldo.o
obj-$(CONFIG_REGULATOR_LP8755) += lp8755.o
obj-$(CONFIG_REGULATOR_LTC3589) += ltc3589.o
+obj-$(CONFIG_REGULATOR_LTC3676) += ltc3676.o
obj-$(CONFIG_REGULATOR_MAX14577) += max14577-regulator.o
obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
obj-$(CONFIG_REGULATOR_MAX77620) += max77620-regulator.o
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index db320e8fa865..67426c0477d3 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -679,24 +679,6 @@ static int drms_uA_update(struct regulator_dev *rdev)
!rdev->desc->ops->set_load)
return -EINVAL;
- /* get output voltage */
- output_uV = _regulator_get_voltage(rdev);
- if (output_uV <= 0) {
- rdev_err(rdev, "invalid output voltage found\n");
- return -EINVAL;
- }
-
- /* get input voltage */
- input_uV = 0;
- if (rdev->supply)
- input_uV = regulator_get_voltage(rdev->supply);
- if (input_uV <= 0)
- input_uV = rdev->constraints->input_uV;
- if (input_uV <= 0) {
- rdev_err(rdev, "invalid input voltage found\n");
- return -EINVAL;
- }
-
/* calc total requested load */
list_for_each_entry(sibling, &rdev->consumer_list, list)
current_uA += sibling->uA_load;
@@ -709,6 +691,24 @@ static int drms_uA_update(struct regulator_dev *rdev)
if (err < 0)
rdev_err(rdev, "failed to set load %d\n", current_uA);
} else {
+ /* get output voltage */
+ output_uV = _regulator_get_voltage(rdev);
+ if (output_uV <= 0) {
+ rdev_err(rdev, "invalid output voltage found\n");
+ return -EINVAL;
+ }
+
+ /* get input voltage */
+ input_uV = 0;
+ if (rdev->supply)
+ input_uV = regulator_get_voltage(rdev->supply);
+ if (input_uV <= 0)
+ input_uV = rdev->constraints->input_uV;
+ if (input_uV <= 0) {
+ rdev_err(rdev, "invalid input voltage found\n");
+ return -EINVAL;
+ }
+
/* now get the optimum mode for our new total regulator load */
mode = rdev->desc->ops->get_optimum_mode(rdev, input_uV,
output_uV, current_uA);
@@ -2743,6 +2743,24 @@ static int _regulator_call_set_voltage_sel(struct regulator_dev *rdev,
return ret;
}
+static int _regulator_set_voltage_time(struct regulator_dev *rdev,
+ int old_uV, int new_uV)
+{
+ unsigned int ramp_delay = 0;
+
+ if (rdev->constraints->ramp_delay)
+ ramp_delay = rdev->constraints->ramp_delay;
+ else if (rdev->desc->ramp_delay)
+ ramp_delay = rdev->desc->ramp_delay;
+
+ if (ramp_delay == 0) {
+ rdev_warn(rdev, "ramp_delay not set\n");
+ return 0;
+ }
+
+ return DIV_ROUND_UP(abs(new_uV - old_uV), ramp_delay);
+}
+
static int _regulator_do_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
@@ -2751,6 +2769,8 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
int best_val = 0;
unsigned int selector;
int old_selector = -1;
+ const struct regulator_ops *ops = rdev->desc->ops;
+ int old_uV = _regulator_get_voltage(rdev);
trace_regulator_set_voltage(rdev_get_name(rdev), min_uV, max_uV);
@@ -2762,29 +2782,28 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
* info to call set_voltage_time_sel().
*/
if (_regulator_is_enabled(rdev) &&
- rdev->desc->ops->set_voltage_time_sel &&
- rdev->desc->ops->get_voltage_sel) {
- old_selector = rdev->desc->ops->get_voltage_sel(rdev);
+ ops->set_voltage_time_sel && ops->get_voltage_sel) {
+ old_selector = ops->get_voltage_sel(rdev);
if (old_selector < 0)
return old_selector;
}
- if (rdev->desc->ops->set_voltage) {
+ if (ops->set_voltage) {
ret = _regulator_call_set_voltage(rdev, min_uV, max_uV,
&selector);
if (ret >= 0) {
- if (rdev->desc->ops->list_voltage)
- best_val = rdev->desc->ops->list_voltage(rdev,
- selector);
+ if (ops->list_voltage)
+ best_val = ops->list_voltage(rdev,
+ selector);
else
best_val = _regulator_get_voltage(rdev);
}
- } else if (rdev->desc->ops->set_voltage_sel) {
+ } else if (ops->set_voltage_sel) {
ret = regulator_map_voltage(rdev, min_uV, max_uV);
if (ret >= 0) {
- best_val = rdev->desc->ops->list_voltage(rdev, ret);
+ best_val = ops->list_voltage(rdev, ret);
if (min_uV <= best_val && max_uV >= best_val) {
selector = ret;
if (old_selector == selector)
@@ -2800,34 +2819,50 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
ret = -EINVAL;
}
- /* Call set_voltage_time_sel if successfully obtained old_selector */
- if (ret == 0 && !rdev->constraints->ramp_disable && old_selector >= 0
- && old_selector != selector) {
+ if (ret)
+ goto out;
- delay = rdev->desc->ops->set_voltage_time_sel(rdev,
- old_selector, selector);
- if (delay < 0) {
- rdev_warn(rdev, "set_voltage_time_sel() failed: %d\n",
- delay);
- delay = 0;
+ if (ops->set_voltage_time_sel) {
+ /*
+ * Call set_voltage_time_sel if successfully obtained
+ * old_selector
+ */
+ if (old_selector >= 0 && old_selector != selector)
+ delay = ops->set_voltage_time_sel(rdev, old_selector,
+ selector);
+ } else {
+ if (old_uV != best_val) {
+ if (ops->set_voltage_time)
+ delay = ops->set_voltage_time(rdev, old_uV,
+ best_val);
+ else
+ delay = _regulator_set_voltage_time(rdev,
+ old_uV,
+ best_val);
}
+ }
- /* Insert any necessary delays */
- if (delay >= 1000) {
- mdelay(delay / 1000);
- udelay(delay % 1000);
- } else if (delay) {
- udelay(delay);
- }
+ if (delay < 0) {
+ rdev_warn(rdev, "failed to get delay: %d\n", delay);
+ delay = 0;
}
- if (ret == 0 && best_val >= 0) {
+ /* Insert any necessary delays */
+ if (delay >= 1000) {
+ mdelay(delay / 1000);
+ udelay(delay % 1000);
+ } else if (delay) {
+ udelay(delay);
+ }
+
+ if (best_val >= 0) {
unsigned long data = best_val;
_notifier_call_chain(rdev, REGULATOR_EVENT_VOLTAGE_CHANGE,
(void *)data);
}
+out:
trace_regulator_set_voltage_complete(rdev_get_name(rdev), best_val);
return ret;
@@ -2998,9 +3033,13 @@ int regulator_set_voltage_time(struct regulator *regulator,
int voltage;
int i;
+ if (ops->set_voltage_time)
+ return ops->set_voltage_time(rdev, old_uV, new_uV);
+ else if (!ops->set_voltage_time_sel)
+ return _regulator_set_voltage_time(rdev, old_uV, new_uV);
+
/* Currently requires operations to do this */
- if (!ops->list_voltage || !ops->set_voltage_time_sel
- || !rdev->desc->n_voltages)
+ if (!ops->list_voltage || !rdev->desc->n_voltages)
return -EINVAL;
for (i = 0; i < rdev->desc->n_voltages; i++) {
@@ -3039,19 +3078,8 @@ int regulator_set_voltage_time_sel(struct regulator_dev *rdev,
unsigned int old_selector,
unsigned int new_selector)
{
- unsigned int ramp_delay = 0;
int old_volt, new_volt;
- if (rdev->constraints->ramp_delay)
- ramp_delay = rdev->constraints->ramp_delay;
- else if (rdev->desc->ramp_delay)
- ramp_delay = rdev->desc->ramp_delay;
-
- if (ramp_delay == 0) {
- rdev_warn(rdev, "ramp_delay not set\n");
- return 0;
- }
-
/* sanity check */
if (!rdev->desc->ops->list_voltage)
return -EINVAL;
@@ -3059,7 +3087,11 @@ int regulator_set_voltage_time_sel(struct regulator_dev *rdev,
old_volt = rdev->desc->ops->list_voltage(rdev, old_selector);
new_volt = rdev->desc->ops->list_voltage(rdev, new_selector);
- return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
+ if (rdev->desc->ops->set_voltage_time)
+ return rdev->desc->ops->set_voltage_time(rdev, old_volt,
+ new_volt);
+ else
+ return _regulator_set_voltage_time(rdev, old_volt, new_volt);
}
EXPORT_SYMBOL_GPL(regulator_set_voltage_time_sel);
@@ -3483,10 +3515,8 @@ int regulator_bulk_get(struct device *dev, int num_consumers,
consumers[i].consumer = NULL;
for (i = 0; i < num_consumers; i++) {
- consumers[i].consumer = _regulator_get(dev,
- consumers[i].supply,
- false,
- !consumers[i].optional);
+ consumers[i].consumer = regulator_get(dev,
+ consumers[i].supply);
if (IS_ERR(consumers[i].consumer)) {
ret = PTR_ERR(consumers[i].consumer);
dev_err(dev, "Failed to get supply '%s': %d\n",
diff --git a/drivers/regulator/dbx500-prcmu.c b/drivers/regulator/dbx500-prcmu.c
index 3963dfad766c..8976141c1438 100644
--- a/drivers/regulator/dbx500-prcmu.c
+++ b/drivers/regulator/dbx500-prcmu.c
@@ -75,24 +75,6 @@ static struct ux500_regulator_debug {
u8 *state_after_suspend;
} rdebug;
-void ux500_regulator_suspend_debug(void)
-{
- int i;
-
- for (i = 0; i < rdebug.num_regulators; i++)
- rdebug.state_before_suspend[i] =
- rdebug.regulator_array[i].is_enabled;
-}
-
-void ux500_regulator_resume_debug(void)
-{
- int i;
-
- for (i = 0; i < rdebug.num_regulators; i++)
- rdebug.state_after_suspend[i] =
- rdebug.regulator_array[i].is_enabled;
-}
-
static int ux500_regulator_power_state_cnt_print(struct seq_file *s, void *p)
{
/* print power state count */
diff --git a/drivers/regulator/devres.c b/drivers/regulator/devres.c
index 6ad8ab4c578d..6ec1d400adae 100644
--- a/drivers/regulator/devres.c
+++ b/drivers/regulator/devres.c
@@ -164,11 +164,8 @@ int devm_regulator_bulk_get(struct device *dev, int num_consumers,
consumers[i].consumer = NULL;
for (i = 0; i < num_consumers; i++) {
- consumers[i].consumer = _devm_regulator_get(dev,
- consumers[i].supply,
- consumers[i].optional ?
- OPTIONAL_GET :
- NORMAL_GET);
+ consumers[i].consumer = devm_regulator_get(dev,
+ consumers[i].supply);
if (IS_ERR(consumers[i].consumer)) {
ret = PTR_ERR(consumers[i].consumer);
dev_err(dev, "Failed to get supply '%s': %d\n",
diff --git a/drivers/regulator/hi6421-regulator.c b/drivers/regulator/hi6421-regulator.c
index 42dc5fb8c899..62c5f5445d44 100644
--- a/drivers/regulator/hi6421-regulator.c
+++ b/drivers/regulator/hi6421-regulator.c
@@ -477,7 +477,8 @@ static int hi6421_regulator_buck_set_mode(struct regulator_dev *rdev,
return 0;
}
-unsigned int hi6421_regulator_ldo_get_optimum_mode(struct regulator_dev *rdev,
+static 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);
diff --git a/drivers/regulator/ltc3676.c b/drivers/regulator/ltc3676.c
new file mode 100644
index 000000000000..e2b476ca2b4d
--- /dev/null
+++ b/drivers/regulator/ltc3676.c
@@ -0,0 +1,420 @@
+/*
+ * Copyright (C) 2016 Gateworks Corporation, Inc. 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
+ * 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/i2c.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/kernel.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>
+
+#define DRIVER_NAME "ltc3676"
+
+/* LTC3676 Registers */
+#define LTC3676_BUCK1 0x01
+#define LTC3676_BUCK2 0x02
+#define LTC3676_BUCK3 0x03
+#define LTC3676_BUCK4 0x04
+#define LTC3676_LDOA 0x05
+#define LTC3676_LDOB 0x06
+#define LTC3676_SQD1 0x07
+#define LTC3676_SQD2 0x08
+#define LTC3676_CNTRL 0x09
+#define LTC3676_DVB1A 0x0A
+#define LTC3676_DVB1B 0x0B
+#define LTC3676_DVB2A 0x0C
+#define LTC3676_DVB2B 0x0D
+#define LTC3676_DVB3A 0x0E
+#define LTC3676_DVB3B 0x0F
+#define LTC3676_DVB4A 0x10
+#define LTC3676_DVB4B 0x11
+#define LTC3676_MSKIRQ 0x12
+#define LTC3676_MSKPG 0x13
+#define LTC3676_USER 0x14
+#define LTC3676_IRQSTAT 0x15
+#define LTC3676_PGSTATL 0x16
+#define LTC3676_PGSTATRT 0x17
+#define LTC3676_HRST 0x1E
+#define LTC3676_CLIRQ 0x1F
+
+#define LTC3676_DVBxA_REF_SELECT BIT(5)
+
+#define LTC3676_IRQSTAT_PGOOD_TIMEOUT BIT(3)
+#define LTC3676_IRQSTAT_UNDERVOLT_WARN BIT(4)
+#define LTC3676_IRQSTAT_UNDERVOLT_FAULT BIT(5)
+#define LTC3676_IRQSTAT_THERMAL_WARN BIT(6)
+#define LTC3676_IRQSTAT_THERMAL_FAULT BIT(7)
+
+enum ltc3676_reg {
+ LTC3676_SW1,
+ LTC3676_SW2,
+ LTC3676_SW3,
+ LTC3676_SW4,
+ LTC3676_LDO1,
+ LTC3676_LDO2,
+ LTC3676_LDO3,
+ LTC3676_LDO4,
+ LTC3676_NUM_REGULATORS,
+};
+
+struct ltc3676 {
+ struct regmap *regmap;
+ struct device *dev;
+ struct regulator_desc regulator_descs[LTC3676_NUM_REGULATORS];
+ struct regulator_dev *regulators[LTC3676_NUM_REGULATORS];
+};
+
+static int ltc3676_set_suspend_voltage(struct regulator_dev *rdev, int uV)
+{
+ struct ltc3676 *ltc3676 = rdev_get_drvdata(rdev);
+ struct device *dev = ltc3676->dev;
+ int dcdc = rdev_get_id(rdev);
+ int sel;
+
+ dev_dbg(dev, "%s id=%d uV=%d\n", __func__, dcdc, uV);
+ sel = regulator_map_voltage_linear(rdev, uV, uV);
+ if (sel < 0)
+ return sel;
+
+ /* DVBB register follows right after the corresponding DVBA register */
+ return regmap_update_bits(ltc3676->regmap, rdev->desc->vsel_reg + 1,
+ rdev->desc->vsel_mask, sel);
+}
+
+static int ltc3676_set_suspend_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ struct ltc3676 *ltc3676= rdev_get_drvdata(rdev);
+ struct device *dev = ltc3676->dev;
+ int mask, val;
+ int dcdc = rdev_get_id(rdev);
+
+ dev_dbg(dev, "%s id=%d mode=%d\n", __func__, dcdc, mode);
+
+ mask = LTC3676_DVBxA_REF_SELECT;
+ switch (mode) {
+ case REGULATOR_MODE_STANDBY:
+ val = 0; /* select DVBxA */
+ break;
+ case REGULATOR_MODE_NORMAL:
+ val = LTC3676_DVBxA_REF_SELECT; /* select DVBxB */
+ break;
+ default:
+ dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n",
+ rdev->desc->name, mode);
+ return -EINVAL;
+ }
+
+ return regmap_update_bits(ltc3676->regmap, rdev->desc->vsel_reg,
+ mask, val);
+}
+
+static inline unsigned int ltc3676_scale(unsigned int uV, u32 r1, u32 r2)
+{
+ uint64_t tmp;
+ if (uV == 0)
+ return 0;
+ tmp = (uint64_t)uV * r1;
+ do_div(tmp, r2);
+ return uV + (unsigned int)tmp;
+}
+
+static int ltc3676_of_parse_cb(struct device_node *np,
+ const struct regulator_desc *desc,
+ struct regulator_config *config)
+{
+ struct ltc3676 *ltc3676 = config->driver_data;
+ struct regulator_desc *rdesc = &ltc3676->regulator_descs[desc->id];
+ u32 r[2];
+ int ret;
+
+ /* LDO3 has a fixed output */
+ if (desc->id == LTC3676_LDO3)
+ return 0;
+
+ ret = of_property_read_u32_array(np, "lltc,fb-voltage-divider", r, 2);
+ if (ret) {
+ dev_err(ltc3676->dev, "Failed to parse voltage divider: %d\n",
+ ret);
+ return ret;
+ }
+
+ rdesc->min_uV = ltc3676_scale(desc->min_uV, r[0], r[1]);
+ rdesc->uV_step = ltc3676_scale(desc->uV_step, r[0], r[1]);
+ rdesc->fixed_uV = ltc3676_scale(desc->fixed_uV, r[0], r[1]);
+
+ return 0;
+}
+
+/* SW1, SW2, SW3, SW4 linear 0.8V-3.3V with scalar via R1/R2 feeback res */
+static struct regulator_ops ltc3676_linear_regulator_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_suspend_voltage = ltc3676_set_suspend_voltage,
+ .set_suspend_mode = ltc3676_set_suspend_mode,
+};
+
+/* LDO1 always on fixed 0.8V-3.3V via scalar via R1/R2 feeback res */
+static struct regulator_ops ltc3676_fixed_standby_regulator_ops = {
+};
+
+/* LDO2, LDO3 fixed (LDO2 has external scalar via R1/R2 feedback res) */
+static struct regulator_ops ltc3676_fixed_regulator_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+#define LTC3676_REG(_id, _name, _ops, en_reg, en_bit, dvba_reg, dvb_mask) \
+ [LTC3676_ ## _id] = { \
+ .name = #_name, \
+ .of_match = of_match_ptr(#_name), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .of_parse_cb = ltc3676_of_parse_cb, \
+ .n_voltages = (dvb_mask) + 1, \
+ .min_uV = (dvba_reg) ? 412500 : 0, \
+ .uV_step = (dvba_reg) ? 12500 : 0, \
+ .ramp_delay = (dvba_reg) ? 800 : 0, \
+ .fixed_uV = (dvb_mask) ? 0 : 725000, \
+ .ops = &ltc3676_ ## _ops ## _regulator_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = LTC3676_ ## _id, \
+ .owner = THIS_MODULE, \
+ .vsel_reg = (dvba_reg), \
+ .vsel_mask = (dvb_mask), \
+ .enable_reg = (en_reg), \
+ .enable_mask = (1 << en_bit), \
+ }
+
+#define LTC3676_LINEAR_REG(_id, _name, _en, _dvba) \
+ LTC3676_REG(_id, _name, linear, \
+ LTC3676_ ## _en, 7, \
+ LTC3676_ ## _dvba, 0x1f)
+
+#define LTC3676_FIXED_REG(_id, _name, _en_reg, _en_bit) \
+ LTC3676_REG(_id, _name, fixed, LTC3676_ ## _en_reg, _en_bit, 0, 0)
+
+static struct regulator_desc ltc3676_regulators[LTC3676_NUM_REGULATORS] = {
+ LTC3676_LINEAR_REG(SW1, sw1, BUCK1, DVB1A),
+ LTC3676_LINEAR_REG(SW2, sw2, BUCK2, DVB2A),
+ LTC3676_LINEAR_REG(SW3, sw3, BUCK3, DVB3A),
+ LTC3676_LINEAR_REG(SW4, sw4, BUCK4, DVB4A),
+ LTC3676_REG(LDO1, ldo1, fixed_standby, 0, 0, 0, 0),
+ LTC3676_FIXED_REG(LDO2, ldo2, LDOA, 2),
+ LTC3676_FIXED_REG(LDO3, ldo3, LDOA, 5),
+ LTC3676_FIXED_REG(LDO4, ldo4, LDOB, 2),
+};
+
+static bool ltc3676_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case LTC3676_IRQSTAT:
+ case LTC3676_BUCK1:
+ case LTC3676_BUCK2:
+ case LTC3676_BUCK3:
+ case LTC3676_BUCK4:
+ case LTC3676_LDOA:
+ case LTC3676_LDOB:
+ case LTC3676_SQD1:
+ case LTC3676_SQD2:
+ case LTC3676_CNTRL:
+ case LTC3676_DVB1A:
+ case LTC3676_DVB1B:
+ case LTC3676_DVB2A:
+ case LTC3676_DVB2B:
+ case LTC3676_DVB3A:
+ case LTC3676_DVB3B:
+ case LTC3676_DVB4A:
+ case LTC3676_DVB4B:
+ case LTC3676_MSKIRQ:
+ case LTC3676_MSKPG:
+ case LTC3676_USER:
+ case LTC3676_HRST:
+ case LTC3676_CLIRQ:
+ return true;
+ }
+ return false;
+}
+
+static bool ltc3676_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case LTC3676_IRQSTAT:
+ case LTC3676_BUCK1:
+ case LTC3676_BUCK2:
+ case LTC3676_BUCK3:
+ case LTC3676_BUCK4:
+ case LTC3676_LDOA:
+ case LTC3676_LDOB:
+ case LTC3676_SQD1:
+ case LTC3676_SQD2:
+ case LTC3676_CNTRL:
+ case LTC3676_DVB1A:
+ case LTC3676_DVB1B:
+ case LTC3676_DVB2A:
+ case LTC3676_DVB2B:
+ case LTC3676_DVB3A:
+ case LTC3676_DVB3B:
+ case LTC3676_DVB4A:
+ case LTC3676_DVB4B:
+ case LTC3676_MSKIRQ:
+ case LTC3676_MSKPG:
+ case LTC3676_USER:
+ case LTC3676_HRST:
+ case LTC3676_CLIRQ:
+ return true;
+ }
+ return false;
+}
+
+static bool ltc3676_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case LTC3676_IRQSTAT:
+ case LTC3676_PGSTATL:
+ case LTC3676_PGSTATRT:
+ return true;
+ }
+ return false;
+}
+
+static const struct regmap_config ltc3676_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .writeable_reg = ltc3676_writeable_reg,
+ .readable_reg = ltc3676_readable_reg,
+ .volatile_reg = ltc3676_volatile_reg,
+ .max_register = LTC3676_CLIRQ,
+ .use_single_rw = true,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static irqreturn_t ltc3676_isr(int irq, void *dev_id)
+{
+ struct ltc3676 *ltc3676 = dev_id;
+ struct device *dev = ltc3676->dev;
+ unsigned int i, irqstat, event;
+
+ regmap_read(ltc3676->regmap, LTC3676_IRQSTAT, &irqstat);
+
+ dev_dbg(dev, "irq%d irqstat=0x%02x\n", irq, irqstat);
+ if (irqstat & LTC3676_IRQSTAT_THERMAL_WARN) {
+ dev_warn(dev, "Over-temperature Warning\n");
+ event = REGULATOR_EVENT_OVER_TEMP;
+ for (i = 0; i < LTC3676_NUM_REGULATORS; i++)
+ regulator_notifier_call_chain(ltc3676->regulators[i],
+ event, NULL);
+ }
+
+ if (irqstat & LTC3676_IRQSTAT_UNDERVOLT_WARN) {
+ dev_info(dev, "Undervoltage Warning\n");
+ event = REGULATOR_EVENT_UNDER_VOLTAGE;
+ for (i = 0; i < LTC3676_NUM_REGULATORS; i++)
+ regulator_notifier_call_chain(ltc3676->regulators[i],
+ event, NULL);
+ }
+
+ /* Clear warning condition */
+ regmap_write(ltc3676->regmap, LTC3676_CLIRQ, 0);
+
+ return IRQ_HANDLED;
+}
+
+static int ltc3676_regulator_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct regulator_init_data *init_data = dev_get_platdata(dev);
+ struct regulator_desc *descs;
+ struct ltc3676 *ltc3676;
+ int i, ret;
+
+ ltc3676 = devm_kzalloc(dev, sizeof(*ltc3676), GFP_KERNEL);
+ if (!ltc3676)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, ltc3676);
+ ltc3676->dev = dev;
+
+ descs = ltc3676->regulator_descs;
+ memcpy(descs, ltc3676_regulators, sizeof(ltc3676_regulators));
+ descs[LTC3676_LDO3].fixed_uV = 1800000; /* LDO3 is fixed 1.8V */
+
+ ltc3676->regmap = devm_regmap_init_i2c(client, &ltc3676_regmap_config);
+ if (IS_ERR(ltc3676->regmap)) {
+ ret = PTR_ERR(ltc3676->regmap);
+ dev_err(dev, "failed to initialize regmap: %d\n", ret);
+ return ret;
+ }
+
+ for (i = 0; i < LTC3676_NUM_REGULATORS; i++) {
+ struct regulator_desc *desc = &ltc3676->regulator_descs[i];
+ struct regulator_config config = { };
+
+ if (init_data)
+ config.init_data = &init_data[i];
+
+ config.dev = dev;
+ config.driver_data = ltc3676;
+
+ ltc3676->regulators[i] = devm_regulator_register(dev, desc,
+ &config);
+ if (IS_ERR(ltc3676->regulators[i])) {
+ ret = PTR_ERR(ltc3676->regulators[i]);
+ dev_err(dev, "failed to register regulator %s: %d\n",
+ desc->name, ret);
+ return ret;
+ }
+ }
+
+ regmap_write(ltc3676->regmap, LTC3676_CLIRQ, 0);
+ if (client->irq) {
+ ret = devm_request_threaded_irq(dev, client->irq, NULL,
+ ltc3676_isr,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ client->name, ltc3676);
+ if (ret) {
+ dev_err(dev, "Failed to request IRQ: %d\n", ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static const struct i2c_device_id ltc3676_i2c_id[] = {
+ { "ltc3676" },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ltc3676_i2c_id);
+
+static struct i2c_driver ltc3676_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ },
+ .probe = ltc3676_regulator_probe,
+ .id_table = ltc3676_i2c_id,
+};
+module_i2c_driver(ltc3676_driver);
+
+MODULE_AUTHOR("Tim Harvey <tharvey@gateworks.com>");
+MODULE_DESCRIPTION("Regulator driver for Linear Technology LTC1376");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/regulator/max14577-regulator.c b/drivers/regulator/max14577-regulator.c
index b2daa6641417..c9ff26199711 100644
--- a/drivers/regulator/max14577-regulator.c
+++ b/drivers/regulator/max14577-regulator.c
@@ -2,7 +2,7 @@
* max14577.c - Regulator driver for the Maxim 14577/77836
*
* Copyright (C) 2013,2014 Samsung Electronics
- * Krzysztof Kozlowski <k.kozlowski@samsung.com>
+ * Krzysztof Kozlowski <krzk@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
@@ -331,7 +331,7 @@ static void __exit max14577_regulator_exit(void)
}
module_exit(max14577_regulator_exit);
-MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>");
+MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>");
MODULE_DESCRIPTION("Maxim 14577/77836 regulator driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:max14577-regulator");
diff --git a/drivers/regulator/max77693-regulator.c b/drivers/regulator/max77693-regulator.c
index de730fd3f8a5..cfbb9512e486 100644
--- a/drivers/regulator/max77693-regulator.c
+++ b/drivers/regulator/max77693-regulator.c
@@ -3,7 +3,7 @@
*
* Copyright (C) 2013-2015 Samsung Electronics
* Jonghwa Lee <jonghwa3.lee@samsung.com>
- * Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
+ * Krzysztof Kozlowski <krzk@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
@@ -314,5 +314,5 @@ module_exit(max77693_pmic_cleanup);
MODULE_DESCRIPTION("MAXIM 77693/77843 regulator driver");
MODULE_AUTHOR("Jonghwa Lee <jonghwa3.lee@samsung.com>");
-MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski.k@gmail.com>");
+MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>");
MODULE_LICENSE("GPL");
diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c
index c24524242da2..1b88e0e15a70 100644
--- a/drivers/regulator/pwm-regulator.c
+++ b/drivers/regulator/pwm-regulator.c
@@ -10,7 +10,6 @@
* published by the Free Software Foundation.
*/
-#include <linux/delay.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
@@ -194,12 +193,10 @@ static int pwm_regulator_set_voltage(struct regulator_dev *rdev,
unsigned int min_uV_duty = drvdata->continuous.min_uV_dutycycle;
unsigned int max_uV_duty = drvdata->continuous.max_uV_dutycycle;
unsigned int duty_unit = drvdata->continuous.dutycycle_unit;
- unsigned int ramp_delay = rdev->constraints->ramp_delay;
int min_uV = rdev->constraints->min_uV;
int max_uV = rdev->constraints->max_uV;
int diff_uV = max_uV - min_uV;
struct pwm_state pstate;
- int old_uV = pwm_regulator_get_voltage(rdev);
unsigned int diff_duty;
unsigned int dutycycle;
int ret;
@@ -233,13 +230,6 @@ static int pwm_regulator_set_voltage(struct regulator_dev *rdev,
return ret;
}
- if ((ramp_delay == 0) || !pwm_regulator_is_enabled(rdev))
- return 0;
-
- /* Ramp delay is in uV/uS. Adjust to uS and delay */
- ramp_delay = DIV_ROUND_UP(abs(req_min_uV - old_uV), ramp_delay);
- usleep_range(ramp_delay, ramp_delay + DIV_ROUND_UP(ramp_delay, 10));
-
return 0;
}
diff --git a/drivers/regulator/qcom_smd-regulator.c b/drivers/regulator/qcom_smd-regulator.c
index 5022fa8d10c6..8ed46a9a55c8 100644
--- a/drivers/regulator/qcom_smd-regulator.c
+++ b/drivers/regulator/qcom_smd-regulator.c
@@ -178,20 +178,21 @@ static const struct regulator_desc pma8084_hfsmps = {
static const struct regulator_desc pma8084_ftsmps = {
.linear_ranges = (struct regulator_linear_range[]) {
REGULATOR_LINEAR_RANGE(350000, 0, 184, 5000),
- REGULATOR_LINEAR_RANGE(700000, 185, 339, 10000),
+ REGULATOR_LINEAR_RANGE(1280000, 185, 261, 10000),
},
.n_linear_ranges = 2,
- .n_voltages = 340,
+ .n_voltages = 262,
.ops = &rpm_smps_ldo_ops,
};
static const struct regulator_desc pma8084_pldo = {
.linear_ranges = (struct regulator_linear_range[]) {
- REGULATOR_LINEAR_RANGE(750000, 0, 30, 25000),
- REGULATOR_LINEAR_RANGE(1500000, 31, 99, 50000),
+ REGULATOR_LINEAR_RANGE( 750000, 0, 63, 12500),
+ REGULATOR_LINEAR_RANGE(1550000, 64, 126, 25000),
+ REGULATOR_LINEAR_RANGE(3100000, 127, 163, 50000),
},
- .n_linear_ranges = 2,
- .n_voltages = 100,
+ .n_linear_ranges = 3,
+ .n_voltages = 164,
.ops = &rpm_smps_ldo_ops,
};
@@ -221,29 +222,30 @@ static const struct regulator_desc pm8x41_hfsmps = {
static const struct regulator_desc pm8841_ftsmps = {
.linear_ranges = (struct regulator_linear_range[]) {
REGULATOR_LINEAR_RANGE(350000, 0, 184, 5000),
- REGULATOR_LINEAR_RANGE(700000, 185, 339, 10000),
+ REGULATOR_LINEAR_RANGE(1280000, 185, 261, 10000),
},
.n_linear_ranges = 2,
- .n_voltages = 340,
+ .n_voltages = 262,
.ops = &rpm_smps_ldo_ops,
};
static const struct regulator_desc pm8941_boost = {
.linear_ranges = (struct regulator_linear_range[]) {
- REGULATOR_LINEAR_RANGE(4000000, 0, 15, 100000),
+ REGULATOR_LINEAR_RANGE(4000000, 0, 30, 50000),
},
.n_linear_ranges = 1,
- .n_voltages = 16,
+ .n_voltages = 31,
.ops = &rpm_smps_ldo_ops,
};
static const struct regulator_desc pm8941_pldo = {
.linear_ranges = (struct regulator_linear_range[]) {
- REGULATOR_LINEAR_RANGE( 750000, 0, 30, 25000),
- REGULATOR_LINEAR_RANGE(1500000, 31, 99, 50000),
+ REGULATOR_LINEAR_RANGE( 750000, 0, 63, 12500),
+ REGULATOR_LINEAR_RANGE(1550000, 64, 126, 25000),
+ REGULATOR_LINEAR_RANGE(3100000, 127, 163, 50000),
},
- .n_linear_ranges = 2,
- .n_voltages = 100,
+ .n_linear_ranges = 3,
+ .n_voltages = 164,
.ops = &rpm_smps_ldo_ops,
};
diff --git a/drivers/regulator/rk808-regulator.c b/drivers/regulator/rk808-regulator.c
index 40d07ba036e7..a6767494d39b 100644
--- a/drivers/regulator/rk808-regulator.c
+++ b/drivers/regulator/rk808-regulator.c
@@ -533,8 +533,7 @@ static int rk808_regulator_probe(struct platform_device *pdev)
static struct platform_driver rk808_regulator_driver = {
.probe = rk808_regulator_probe,
.driver = {
- .name = "rk808-regulator",
- .owner = THIS_MODULE,
+ .name = "rk808-regulator"
},
};
diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c
index d1e631d64a20..eb0f5b13841a 100644
--- a/drivers/regulator/tps65218-regulator.c
+++ b/drivers/regulator/tps65218-regulator.c
@@ -180,6 +180,14 @@ static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
return -EINVAL;
+ /*
+ * Certain revisions of TPS65218 will need to have DCDC3 regulator
+ * enabled always, otherwise an immediate system reboot will occur
+ * during poweroff.
+ */
+ if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1)
+ return 0;
+
if (!tps->info[rid]->strobe) {
if (rid == TPS65218_DCDC_3)
tps->info[rid]->strobe = 3;
diff --git a/drivers/regulator/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c
index fb991ec76423..696116ebdf50 100644
--- a/drivers/regulator/tps65910-regulator.c
+++ b/drivers/regulator/tps65910-regulator.c
@@ -1111,6 +1111,12 @@ static int tps65910_probe(struct platform_device *pdev)
pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
pmic->ext_sleep_control = tps65910_ext_sleep_control;
info = tps65910_regs;
+ /* Work around silicon erratum SWCZ010: output programmed
+ * voltage level can go higher than expected or crash
+ * Workaround: use no synchronization of DCDC clocks
+ */
+ tps65910_reg_clear_bits(pmic->mfd, TPS65910_DCDCCTRL,
+ DCDCCTRL_DCDCCKSYNC_MASK);
break;
case TPS65911:
pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
generated by cgit (git 2.34.1) at 2024-06-10 06:22:21 +0000