summaryrefslogtreecommitdiffstats
path: root/drivers/regulator
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/Kconfig15
-rw-r--r--drivers/regulator/Makefile2
-rw-r--r--drivers/regulator/arizona-ldo1.c58
-rw-r--r--drivers/regulator/arizona-micsupp.c38
-rw-r--r--drivers/regulator/axp20x-regulator.c286
-rw-r--r--drivers/regulator/bcm590xx-regulator.c92
-rw-r--r--drivers/regulator/core.c58
-rw-r--r--drivers/regulator/devres.c6
-rw-r--r--drivers/regulator/fixed.c13
-rw-r--r--drivers/regulator/ltc3589.c554
-rw-r--r--drivers/regulator/max8649.c4
-rw-r--r--drivers/regulator/of_regulator.c68
-rw-r--r--drivers/regulator/pbias-regulator.c76
-rw-r--r--drivers/regulator/s2mpa01.c1
14 files changed, 1143 insertions, 128 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 903eb37f047..c2fa0b4367b 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -139,6 +139,13 @@ config REGULATOR_AS3722
AS3722 PMIC. This will enable support for all the software
controllable DCDC/LDO regulators.
+config REGULATOR_AXP20X
+ tristate "X-POWERS AXP20X PMIC Regulators"
+ depends on MFD_AXP20X
+ help
+ This driver provides support for the voltage regulators on the
+ AXP20X PMIC.
+
config REGULATOR_BCM590XX
tristate "Broadcom BCM590xx PMU Regulators"
depends on MFD_BCM590XX
@@ -265,6 +272,14 @@ config REGULATOR_LP8788
help
This driver supports LP8788 voltage regulator chip.
+config REGULATOR_LTC3589
+ tristate "LTC3589 8-output voltage regulator"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ This enables support for the LTC3589, LTC3589-1, and LTC3589-2
+ 8-output regulators controlled via I2C.
+
config REGULATOR_MAX14577
tristate "Maxim 14577 regulator"
depends on MFD_MAX14577
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 12ef277a48b..d461110f446 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o
obj-$(CONFIG_REGULATOR_AS3711) += as3711-regulator.o
obj-$(CONFIG_REGULATOR_AS3722) += as3722-regulator.o
+obj-$(CONFIG_REGULATOR_AXP20X) += axp20x-regulator.o
obj-$(CONFIG_REGULATOR_BCM590XX) += bcm590xx-regulator.o
obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
obj-$(CONFIG_REGULATOR_DA9052) += da9052-regulator.o
@@ -37,6 +38,7 @@ obj-$(CONFIG_REGULATOR_LP872X) += lp872x.o
obj-$(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_MAX14577) += max14577.o
obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
obj-$(CONFIG_REGULATOR_MAX8649) += max8649.o
diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c
index b1033d30b50..04f262a836b 100644
--- a/drivers/regulator/arizona-ldo1.c
+++ b/drivers/regulator/arizona-ldo1.c
@@ -16,9 +16,11 @@
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/err.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
#include <linux/gpio.h>
#include <linux/slab.h>
@@ -178,6 +180,42 @@ static const struct regulator_init_data arizona_ldo1_default = {
.num_consumer_supplies = 1,
};
+static int arizona_ldo1_of_get_pdata(struct arizona *arizona,
+ struct regulator_config *config)
+{
+ struct arizona_pdata *pdata = &arizona->pdata;
+ struct arizona_ldo1 *ldo1 = config->driver_data;
+ struct device_node *init_node, *dcvdd_node;
+ struct regulator_init_data *init_data;
+
+ pdata->ldoena = arizona_of_get_named_gpio(arizona, "wlf,ldoena", true);
+
+ init_node = of_get_child_by_name(arizona->dev->of_node, "ldo1");
+ dcvdd_node = of_parse_phandle(arizona->dev->of_node, "DCVDD-supply", 0);
+
+ if (init_node) {
+ config->of_node = init_node;
+
+ init_data = of_get_regulator_init_data(arizona->dev, init_node);
+
+ if (init_data) {
+ init_data->consumer_supplies = &ldo1->supply;
+ init_data->num_consumer_supplies = 1;
+
+ if (dcvdd_node && dcvdd_node != init_node)
+ arizona->external_dcvdd = true;
+
+ pdata->ldo1 = init_data;
+ }
+ } else if (dcvdd_node) {
+ arizona->external_dcvdd = true;
+ }
+
+ of_node_put(dcvdd_node);
+
+ return 0;
+}
+
static int arizona_ldo1_probe(struct platform_device *pdev)
{
struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
@@ -186,6 +224,8 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
struct arizona_ldo1 *ldo1;
int ret;
+ arizona->external_dcvdd = false;
+
ldo1 = devm_kzalloc(&pdev->dev, sizeof(*ldo1), GFP_KERNEL);
if (!ldo1)
return -ENOMEM;
@@ -216,6 +256,15 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
config.dev = arizona->dev;
config.driver_data = ldo1;
config.regmap = arizona->regmap;
+
+ if (IS_ENABLED(CONFIG_OF)) {
+ if (!dev_get_platdata(arizona->dev)) {
+ ret = arizona_ldo1_of_get_pdata(arizona, &config);
+ if (ret < 0)
+ return ret;
+ }
+ }
+
config.ena_gpio = arizona->pdata.ldoena;
if (arizona->pdata.ldo1)
@@ -223,6 +272,13 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
else
config.init_data = &ldo1->init_data;
+ /*
+ * LDO1 can only be used to supply DCVDD so if it has no
+ * consumers then DCVDD is supplied externally.
+ */
+ if (config.init_data->num_consumer_supplies == 0)
+ arizona->external_dcvdd = true;
+
ldo1->regulator = devm_regulator_register(&pdev->dev, desc, &config);
if (IS_ERR(ldo1->regulator)) {
ret = PTR_ERR(ldo1->regulator);
@@ -231,6 +287,8 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
return ret;
}
+ of_node_put(config.of_node);
+
platform_set_drvdata(pdev, ldo1);
return 0;
diff --git a/drivers/regulator/arizona-micsupp.c b/drivers/regulator/arizona-micsupp.c
index 6fdd9bf6927..ce9aca5f8ee 100644
--- a/drivers/regulator/arizona-micsupp.c
+++ b/drivers/regulator/arizona-micsupp.c
@@ -16,9 +16,11 @@
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/err.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
@@ -195,6 +197,32 @@ static const struct regulator_init_data arizona_micsupp_ext_default = {
.num_consumer_supplies = 1,
};
+static int arizona_micsupp_of_get_pdata(struct arizona *arizona,
+ struct regulator_config *config)
+{
+ struct arizona_pdata *pdata = &arizona->pdata;
+ struct arizona_micsupp *micsupp = config->driver_data;
+ struct device_node *np;
+ struct regulator_init_data *init_data;
+
+ np = of_get_child_by_name(arizona->dev->of_node, "micvdd");
+
+ if (np) {
+ config->of_node = np;
+
+ init_data = of_get_regulator_init_data(arizona->dev, np);
+
+ if (init_data) {
+ init_data->consumer_supplies = &micsupp->supply;
+ init_data->num_consumer_supplies = 1;
+
+ pdata->micvdd = init_data;
+ }
+ }
+
+ return 0;
+}
+
static int arizona_micsupp_probe(struct platform_device *pdev)
{
struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
@@ -234,6 +262,14 @@ static int arizona_micsupp_probe(struct platform_device *pdev)
config.driver_data = micsupp;
config.regmap = arizona->regmap;
+ if (IS_ENABLED(CONFIG_OF)) {
+ if (!dev_get_platdata(arizona->dev)) {
+ ret = arizona_micsupp_of_get_pdata(arizona, &config);
+ if (ret < 0)
+ return ret;
+ }
+ }
+
if (arizona->pdata.micvdd)
config.init_data = arizona->pdata.micvdd;
else
@@ -253,6 +289,8 @@ static int arizona_micsupp_probe(struct platform_device *pdev)
return ret;
}
+ of_node_put(config.of_node);
+
platform_set_drvdata(pdev, micsupp);
return 0;
diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
new file mode 100644
index 00000000000..004aadb7bcc
--- /dev/null
+++ b/drivers/regulator/axp20x-regulator.c
@@ -0,0 +1,286 @@
+/*
+ * AXP20x regulators driver.
+ *
+ * Copyright (C) 2013 Carlo Caione <carlo@caione.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * 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/err.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/axp20x.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+
+#define AXP20X_IO_ENABLED 0x03
+#define AXP20X_IO_DISABLED 0x07
+
+#define AXP20X_WORKMODE_DCDC2_MASK BIT(2)
+#define AXP20X_WORKMODE_DCDC3_MASK BIT(1)
+
+#define AXP20X_FREQ_DCDC_MASK 0x0f
+
+#define AXP20X_DESC_IO(_id, _supply, _min, _max, _step, _vreg, _vmask, _ereg, \
+ _emask, _enable_val, _disable_val) \
+ [AXP20X_##_id] = { \
+ .name = #_id, \
+ .supply_name = (_supply), \
+ .type = REGULATOR_VOLTAGE, \
+ .id = AXP20X_##_id, \
+ .n_voltages = (((_max) - (_min)) / (_step) + 1), \
+ .owner = THIS_MODULE, \
+ .min_uV = (_min) * 1000, \
+ .uV_step = (_step) * 1000, \
+ .vsel_reg = (_vreg), \
+ .vsel_mask = (_vmask), \
+ .enable_reg = (_ereg), \
+ .enable_mask = (_emask), \
+ .enable_val = (_enable_val), \
+ .disable_val = (_disable_val), \
+ .ops = &axp20x_ops, \
+ }
+
+#define AXP20X_DESC(_id, _supply, _min, _max, _step, _vreg, _vmask, _ereg, \
+ _emask) \
+ [AXP20X_##_id] = { \
+ .name = #_id, \
+ .supply_name = (_supply), \
+ .type = REGULATOR_VOLTAGE, \
+ .id = AXP20X_##_id, \
+ .n_voltages = (((_max) - (_min)) / (_step) + 1), \
+ .owner = THIS_MODULE, \
+ .min_uV = (_min) * 1000, \
+ .uV_step = (_step) * 1000, \
+ .vsel_reg = (_vreg), \
+ .vsel_mask = (_vmask), \
+ .enable_reg = (_ereg), \
+ .enable_mask = (_emask), \
+ .ops = &axp20x_ops, \
+ }
+
+#define AXP20X_DESC_FIXED(_id, _supply, _volt) \
+ [AXP20X_##_id] = { \
+ .name = #_id, \
+ .supply_name = (_supply), \
+ .type = REGULATOR_VOLTAGE, \
+ .id = AXP20X_##_id, \
+ .n_voltages = 1, \
+ .owner = THIS_MODULE, \
+ .min_uV = (_volt) * 1000, \
+ .ops = &axp20x_ops_fixed \
+ }
+
+#define AXP20X_DESC_TABLE(_id, _supply, _table, _vreg, _vmask, _ereg, _emask) \
+ [AXP20X_##_id] = { \
+ .name = #_id, \
+ .supply_name = (_supply), \
+ .type = REGULATOR_VOLTAGE, \
+ .id = AXP20X_##_id, \
+ .n_voltages = ARRAY_SIZE(_table), \
+ .owner = THIS_MODULE, \
+ .vsel_reg = (_vreg), \
+ .vsel_mask = (_vmask), \
+ .enable_reg = (_ereg), \
+ .enable_mask = (_emask), \
+ .volt_table = (_table), \
+ .ops = &axp20x_ops_table, \
+ }
+
+static const int axp20x_ldo4_data[] = { 1250000, 1300000, 1400000, 1500000, 1600000,
+ 1700000, 1800000, 1900000, 2000000, 2500000,
+ 2700000, 2800000, 3000000, 3100000, 3200000,
+ 3300000 };
+
+static struct regulator_ops axp20x_ops_fixed = {
+ .list_voltage = regulator_list_voltage_linear,
+};
+
+static struct regulator_ops axp20x_ops_table = {
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_table,
+ .map_voltage = regulator_map_voltage_ascend,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+static struct regulator_ops axp20x_ops = {
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+static const struct regulator_desc axp20x_regulators[] = {
+ AXP20X_DESC(DCDC2, "vin2", 700, 2275, 25, AXP20X_DCDC2_V_OUT, 0x3f,
+ AXP20X_PWR_OUT_CTRL, 0x10),
+ AXP20X_DESC(DCDC3, "vin3", 700, 3500, 25, AXP20X_DCDC3_V_OUT, 0x7f,
+ AXP20X_PWR_OUT_CTRL, 0x02),
+ AXP20X_DESC_FIXED(LDO1, "acin", 1300),
+ AXP20X_DESC(LDO2, "ldo24in", 1800, 3300, 100, AXP20X_LDO24_V_OUT, 0xf0,
+ AXP20X_PWR_OUT_CTRL, 0x04),
+ AXP20X_DESC(LDO3, "ldo3in", 700, 3500, 25, AXP20X_LDO3_V_OUT, 0x7f,
+ AXP20X_PWR_OUT_CTRL, 0x40),
+ AXP20X_DESC_TABLE(LDO4, "ldo24in", axp20x_ldo4_data, AXP20X_LDO24_V_OUT, 0x0f,
+ AXP20X_PWR_OUT_CTRL, 0x08),
+ AXP20X_DESC_IO(LDO5, "ldo5in", 1800, 3300, 100, AXP20X_LDO5_V_OUT, 0xf0,
+ AXP20X_GPIO0_CTRL, 0x07, AXP20X_IO_ENABLED,
+ AXP20X_IO_DISABLED),
+};
+
+#define AXP_MATCH(_name, _id) \
+ [AXP20X_##_id] = { \
+ .name = #_name, \
+ .driver_data = (void *) &axp20x_regulators[AXP20X_##_id], \
+ }
+
+static struct of_regulator_match axp20x_matches[] = {
+ AXP_MATCH(dcdc2, DCDC2),
+ AXP_MATCH(dcdc3, DCDC3),
+ AXP_MATCH(ldo1, LDO1),
+ AXP_MATCH(ldo2, LDO2),
+ AXP_MATCH(ldo3, LDO3),
+ AXP_MATCH(ldo4, LDO4),
+ AXP_MATCH(ldo5, LDO5),
+};
+
+static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
+{
+ struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
+
+ if (dcdcfreq < 750) {
+ dcdcfreq = 750;
+ dev_warn(&pdev->dev, "DCDC frequency too low. Set to 750kHz\n");
+ }
+
+ if (dcdcfreq > 1875) {
+ dcdcfreq = 1875;
+ dev_warn(&pdev->dev, "DCDC frequency too high. Set to 1875kHz\n");
+ }
+
+ dcdcfreq = (dcdcfreq - 750) / 75;
+
+ return regmap_update_bits(axp20x->regmap, AXP20X_DCDC_FREQ,
+ AXP20X_FREQ_DCDC_MASK, dcdcfreq);
+}
+
+static int axp20x_regulator_parse_dt(struct platform_device *pdev)
+{
+ struct device_node *np, *regulators;
+ int ret;
+ u32 dcdcfreq;
+
+ np = of_node_get(pdev->dev.parent->of_node);
+ if (!np)
+ return 0;
+
+ regulators = of_get_child_by_name(np, "regulators");
+ if (!regulators) {
+ dev_warn(&pdev->dev, "regulators node not found\n");
+ } else {
+ ret = of_regulator_match(&pdev->dev, regulators, axp20x_matches,
+ ARRAY_SIZE(axp20x_matches));
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Error parsing regulator init data: %d\n", ret);
+ return ret;
+ }
+
+ dcdcfreq = 1500;
+ of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
+ ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
+ return ret;
+ }
+
+ of_node_put(regulators);
+ }
+
+ return 0;
+}
+
+static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
+{
+ unsigned int mask = AXP20X_WORKMODE_DCDC2_MASK;
+
+ if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
+ return -EINVAL;
+
+ if (id == AXP20X_DCDC3)
+ mask = AXP20X_WORKMODE_DCDC3_MASK;
+
+ workmode <<= ffs(mask) - 1;
+
+ return regmap_update_bits(rdev->regmap, AXP20X_DCDC_MODE, mask, workmode);
+}
+
+static int axp20x_regulator_probe(struct platform_device *pdev)
+{
+ struct regulator_dev *rdev;
+ struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
+ struct regulator_config config = { };
+ struct regulator_init_data *init_data;
+ int ret, i;
+ u32 workmode;
+
+ ret = axp20x_regulator_parse_dt(pdev);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < AXP20X_REG_ID_MAX; i++) {
+ init_data = axp20x_matches[i].init_data;
+
+ config.dev = &pdev->dev;
+ config.init_data = init_data;
+ config.regmap = axp20x->regmap;
+ config.of_node = axp20x_matches[i].of_node;
+
+ rdev = devm_regulator_register(&pdev->dev, &axp20x_regulators[i],
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "Failed to register %s\n",
+ axp20x_regulators[i].name);
+
+ return PTR_ERR(rdev);
+ }
+
+ ret = of_property_read_u32(axp20x_matches[i].of_node, "x-powers,dcdc-workmode",
+ &workmode);
+ if (!ret) {
+ if (axp20x_set_dcdc_workmode(rdev, i, workmode))
+ dev_err(&pdev->dev, "Failed to set workmode on %s\n",
+ axp20x_regulators[i].name);
+ }
+ }
+
+ return 0;
+}
+
+static struct platform_driver axp20x_regulator_driver = {
+ .probe = axp20x_regulator_probe,
+ .driver = {
+ .name = "axp20x-regulator",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(axp20x_regulator_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
+MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
diff --git a/drivers/regulator/bcm590xx-regulator.c b/drivers/regulator/bcm590xx-regulator.c
index c3750c5b382..57544e254a7 100644
--- a/drivers/regulator/bcm590xx-regulator.c
+++ b/drivers/regulator/bcm590xx-regulator.c
@@ -22,7 +22,7 @@
#include <linux/regulator/of_regulator.h>
#include <linux/slab.h>
-/* Register defs */
+/* I2C slave 0 registers */
#define BCM590XX_RFLDOPMCTRL1 0x60
#define BCM590XX_IOSR1PMCTRL1 0x7a
#define BCM590XX_IOSR2PMCTRL1 0x7c
@@ -31,13 +31,34 @@
#define BCM590XX_SDSR2PMCTRL1 0x86
#define BCM590XX_MSRPMCTRL1 0x8a
#define BCM590XX_VSRPMCTRL1 0x8e
-#define BCM590XX_REG_ENABLE BIT(7)
-
#define BCM590XX_RFLDOCTRL 0x96
#define BCM590XX_CSRVOUT1 0xc0
+
+/* I2C slave 1 registers */
+#define BCM590XX_GPLDO5PMCTRL1 0x16
+#define BCM590XX_GPLDO6PMCTRL1 0x18
+#define BCM590XX_GPLDO1CTRL 0x1a
+#define BCM590XX_GPLDO2CTRL 0x1b
+#define BCM590XX_GPLDO3CTRL 0x1c
+#define BCM590XX_GPLDO4CTRL 0x1d
+#define BCM590XX_GPLDO5CTRL 0x1e
+#define BCM590XX_GPLDO6CTRL 0x1f
+#define BCM590XX_OTG_CTRL 0x40
+#define BCM590XX_GPLDO1PMCTRL1 0x57
+#define BCM590XX_GPLDO2PMCTRL1 0x59
+#define BCM590XX_GPLDO3PMCTRL1 0x5b
+#define BCM590XX_GPLDO4PMCTRL1 0x5d
+
+#define BCM590XX_REG_ENABLE BIT(7)
+#define BCM590XX_VBUS_ENABLE BIT(2)
#define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3)
#define BCM590XX_SR_VSEL_MASK GENMASK(5, 0)
+/*
+ * RFLDO to VSR regulators are
+ * accessed via I2C slave 0
+ */
+
/* LDO regulator IDs */
#define BCM590XX_REG_RFLDO 0
#define BCM590XX_REG_CAMLDO1 1
@@ -62,9 +83,25 @@
#define BCM590XX_REG_SDSR2 18
#define BCM590XX_REG_VSR 19
-#define BCM590XX_NUM_REGS 20
+/*
+ * GPLDO1 to VBUS regulators are
+ * accessed via I2C slave 1
+ */
+
+#define BCM590XX_REG_GPLDO1 20
+#define BCM590XX_REG_GPLDO2 21
+#define BCM590XX_REG_GPLDO3 22
+#define BCM590XX_REG_GPLDO4 23
+#define BCM590XX_REG_GPLDO5 24
+#define BCM590XX_REG_GPLDO6 25
+#define BCM590XX_REG_VBUS 26
+
+#define BCM590XX_NUM_REGS 27
#define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR)
+#define BCM590XX_REG_IS_GPLDO(n) \
+ ((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS))
+#define BCM590XX_REG_IS_VBUS(n) (n == BCM590XX_REG_VBUS)
struct bcm590xx_board {
struct regulator_init_data *bcm590xx_pmu_init_data[BCM590XX_NUM_REGS];
@@ -149,6 +186,12 @@ static struct bcm590xx_info bcm590xx_regs[] = {
BCM590XX_REG_RANGES(sdsr1, dcdc_sdsr1_ranges),
BCM590XX_REG_RANGES(sdsr2, dcdc_iosr1_ranges),
BCM590XX_REG_RANGES(vsr, dcdc_iosr1_ranges),
+ BCM590XX_REG_TABLE(gpldo1, ldo_a_table),
+ BCM590XX_REG_TABLE(gpldo2, ldo_a_table),
+ BCM590XX_REG_TABLE(gpldo3, ldo_a_table),
+ BCM590XX_REG_TABLE(gpldo4, ldo_a_table),
+ BCM590XX_REG_TABLE(gpldo5, ldo_a_table),
+ BCM590XX_REG_TABLE(gpldo6, ldo_a_table),
};
struct bcm590xx_reg {
@@ -161,6 +204,8 @@ static int bcm590xx_get_vsel_register(int id)
{
if (BCM590XX_REG_IS_LDO(id))
return BCM590XX_RFLDOCTRL + id;
+ else if (BCM590XX_REG_IS_GPLDO(id))
+ return BCM590XX_GPLDO1CTRL + id;
else
return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3;
}
@@ -171,6 +216,8 @@ static int bcm590xx_get_enable_register(int id)
if (BCM590XX_REG_IS_LDO(id))
reg = BCM590XX_RFLDOPMCTRL1 + id * 2;
+ else if (BCM590XX_REG_IS_GPLDO(id))
+ reg = BCM590XX_GPLDO1PMCTRL1 + id * 2;
else
switch (id) {
case BCM590XX_REG_CSR:
@@ -191,8 +238,11 @@ static int bcm590xx_get_enable_register(int id)
case BCM590XX_REG_SDSR2:
reg = BCM590XX_SDSR2PMCTRL1;
break;
+ case BCM590XX_REG_VBUS:
+ reg = BCM590XX_OTG_CTRL;
};
+
return reg;
}
@@ -216,6 +266,12 @@ static struct regulator_ops bcm590xx_ops_dcdc = {
.map_voltage = regulator_map_voltage_linear_range,
};
+static struct regulator_ops bcm590xx_ops_vbus = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+};
+
#define BCM590XX_MATCH(_name, _id) \
{ \
.name = #_name, \
@@ -243,6 +299,13 @@ static struct of_regulator_match bcm590xx_matches[] = {
BCM590XX_MATCH(sdsr1, SDSR1),
BCM590XX_MATCH(sdsr2, SDSR2),
BCM590XX_MATCH(vsr, VSR),
+ BCM590XX_MATCH(gpldo1, GPLDO1),
+ BCM590XX_MATCH(gpldo2, GPLDO2),
+ BCM590XX_MATCH(gpldo3, GPLDO3),
+ BCM590XX_MATCH(gpldo4, GPLDO4),
+ BCM590XX_MATCH(gpldo5, GPLDO5),
+ BCM590XX_MATCH(gpldo6, GPLDO6),
+ BCM590XX_MATCH(vbus, VBUS),
};
static struct bcm590xx_board *bcm590xx_parse_dt_reg_data(
@@ -353,17 +416,23 @@ static int bcm590xx_probe(struct platform_device *pdev)
pmu->desc[i].linear_ranges = info->linear_ranges;
pmu->desc[i].n_linear_ranges = info->n_linear_ranges;
- if (BCM590XX_REG_IS_LDO(i)) {
+ if ((BCM590XX_REG_IS_LDO(i)) || (BCM590XX_REG_IS_GPLDO(i))) {
pmu->desc[i].ops = &bcm590xx_ops_ldo;
pmu->desc[i].vsel_mask = BCM590XX_LDO_VSEL_MASK;
- } else {
+ } else if (BCM590XX_REG_IS_VBUS(i))
+ pmu->desc[i].ops = &bcm590xx_ops_vbus;
+ else {
pmu->desc[i].ops = &bcm590xx_ops_dcdc;
pmu->desc[i].vsel_mask = BCM590XX_SR_VSEL_MASK;
}
- pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i);
- pmu->desc[i].enable_is_inverted = true;
- pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE;
+ if (BCM590XX_REG_IS_VBUS(i))
+ pmu->desc[i].enable_mask = BCM590XX_VBUS_ENABLE;
+ else {
+ pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i);
+ pmu->desc[i].enable_is_inverted = true;
+ pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE;
+ }
pmu->desc[i].enable_reg = bcm590xx_get_enable_register(i);
pmu->desc[i].type = REGULATOR_VOLTAGE;
pmu->desc[i].owner = THIS_MODULE;
@@ -371,7 +440,10 @@ static int bcm590xx_probe(struct platform_device *pdev)
config.dev = bcm590xx->dev;
config.init_data = reg_data;
config.driver_data = pmu;
- config.regmap = bcm590xx->regmap;
+ if (BCM590XX_REG_IS_GPLDO(i) || BCM590XX_REG_IS_VBUS(i))
+ config.regmap = bcm590xx->regmap_sec;
+ else
+ config.regmap = bcm590xx->regmap_pri;
if (bcm590xx_reg_matches)
config.of_node = bcm590xx_reg_matches[i].of_node;
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 9a09f3cdbab..4c1f999041d 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -844,13 +844,22 @@ static int machine_constraints_voltage(struct regulator_dev *rdev,
/* do we need to apply the constraint voltage */
if (rdev->constraints->apply_uV &&
rdev->constraints->min_uV == rdev->constraints->max_uV) {
- ret = _regulator_do_set_voltage(rdev,
- rdev->constraints->min_uV,
- rdev->constraints->max_uV);
- if (ret < 0) {
- rdev_err(rdev, "failed to apply %duV constraint\n",
- rdev->constraints->min_uV);
- return ret;
+ int current_uV = _regulator_get_voltage(rdev);
+ if (current_uV < 0) {
+ rdev_err(rdev, "failed to get the current voltage\n");
+ return current_uV;
+ }
+ if (current_uV < rdev->constraints->min_uV ||
+ current_uV > rdev->constraints->max_uV) {
+ ret = _regulator_do_set_voltage(
+ rdev, rdev->constraints->min_uV,
+ rdev->constraints->max_uV);
+ if (ret < 0) {
+ rdev_err(rdev,
+ "failed to apply %duV constraint\n",
+ rdev->constraints->min_uV);
+ return ret;
+ }
}
}
@@ -1430,9 +1439,9 @@ EXPORT_SYMBOL_GPL(regulator_get);
*
* Returns a struct regulator corresponding to the regulator producer,
* or IS_ERR() condition containing errno. Other consumers will be
- * unable to obtain this reference is held and the use count for the
- * regulator will be initialised to reflect the current state of the
- * regulator.
+ * unable to obtain this regulator while this reference is held and the
+ * use count for the regulator will be initialised to reflect the current
+ * state of the regulator.
*
* This is intended for use by consumers which cannot tolerate shared
* use of the regulator such as those which need to force the
@@ -1456,10 +1465,7 @@ EXPORT_SYMBOL_GPL(regulator_get_exclusive);
* @id: Supply name or regulator ID.
*
* Returns a struct regulator corresponding to the regulator producer,
- * or IS_ERR() condition containing errno. Other consumers will be
- * unable to obtain this reference is held and the use count for the
- * regulator will be initialised to reflect the current state of the
- * regulator.
+ * or IS_ERR() condition containing errno.
*
* This is intended for use by consumers for devices which can have
* some supplies unconnected in normal use, such as some MMC devices.
@@ -1597,9 +1603,10 @@ EXPORT_SYMBOL_GPL(regulator_unregister_supply_alias);
* registered any aliases that were registered will be removed
* before returning to the caller.
*/
-int regulator_bulk_register_supply_alias(struct device *dev, const char **id,
+int regulator_bulk_register_supply_alias(struct device *dev,
+ const char *const *id,
struct device *alias_dev,
- const char **alias_id,
+ const char *const *alias_id,
int num_id)
{
int i;
@@ -1637,7 +1644,7 @@ EXPORT_SYMBOL_GPL(regulator_bulk_register_supply_alias);
* aliases in one operation.
*/
void regulator_bulk_unregister_supply_alias(struct device *dev,
- const char **id,
+ const char *const *id,
int num_id)
{
int i;
@@ -2321,6 +2328,10 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
regulator_list_voltage_linear)
ret = regulator_map_voltage_linear(rdev,
min_uV, max_uV);
+ else if (rdev->desc->ops->list_voltage ==
+ regulator_list_voltage_linear_range)
+ ret = regulator_map_voltage_linear_range(rdev,
+ min_uV, max_uV);
else
ret = regulator_map_voltage_iterate(rdev,
min_uV, max_uV);
@@ -3447,7 +3458,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
/* register with sysfs */
rdev->dev.class = &regulator_class;
- rdev->dev.of_node = config->of_node;
+ 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);
@@ -3589,6 +3600,7 @@ void regulator_unregister(struct regulator_dev *rdev)
list_del(&rdev->list);
kfree(rdev->constraints);
regulator_ena_gpio_free(rdev);
+ of_node_put(rdev->dev.of_node);
device_unregister(&rdev->dev);
mutex_unlock(&regulator_list_mutex);
}
@@ -3819,8 +3831,9 @@ static int __init regulator_init_complete(void)
mutex_lock(&regulator_list_mutex);
/* If we have a full configuration then disable any regulators
- * which are not in use or always_on. This will become the
- * default behaviour in the future.
+ * we have permission to change the status for and which are
+ * not in use or always_on. This is effectively the default
+ * for DT and ACPI as they have full constraints.
*/
list_for_each_entry(rdev, &regulator_list, list) {
ops = rdev->desc->ops;
@@ -3829,6 +3842,9 @@ static int __init regulator_init_complete(void)
if (c && c->always_on)
continue;
+ if (c && !(c->valid_ops_mask & REGULATOR_CHANGE_STATUS))
+ continue;
+
mutex_lock(&rdev->mutex);
if (rdev->use_count)
@@ -3867,4 +3883,4 @@ unlock:
return 0;
}
-late_initcall(regulator_init_complete);
+late_initcall_sync(regulator_init_complete);
diff --git a/drivers/regulator/devres.c b/drivers/regulator/devres.c
index f44818b838d..8f785bc9e51 100644
--- a/drivers/regulator/devres.c
+++ b/drivers/regulator/devres.c
@@ -360,9 +360,9 @@ EXPORT_SYMBOL_GPL(devm_regulator_unregister_supply_alias);
* will be removed before returning to the caller.
*/
int devm_regulator_bulk_register_supply_alias(struct device *dev,
- const char **id,
+ const char *const *id,
struct device *alias_dev,
- const char **alias_id,
+ const char *const *alias_id,
int num_id)
{
int i;
@@ -404,7 +404,7 @@ EXPORT_SYMBOL_GPL(devm_regulator_bulk_register_supply_alias);
* will ensure that the resource is freed.
*/
void devm_regulator_bulk_unregister_supply_alias(struct device *dev,
- const char **id,
+ const char *const *id,
int num_id)
{
int i;
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index c61f7e97e4f..354105eff1f 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -50,7 +50,6 @@ of_get_fixed_voltage_config(struct device *dev)
{
struct fixed_voltage_config *config;
struct device_node *np = dev->of_node;
- const __be32 *delay;
struct regulator_init_data *init_data;
config = devm_kzalloc(dev, sizeof(struct fixed_voltage_config),
@@ -91,15 +90,11 @@ of_get_fixed_voltage_config(struct device *dev)
if ((config->gpio == -ENODEV) || (config->gpio == -EPROBE_DEFER))
return ERR_PTR(-EPROBE_DEFER);
- delay = of_get_property(np, "startup-delay-us", NULL);
- if (delay)
- config->startup_delay = be32_to_cpu(*delay);
+ of_property_read_u32(np, "startup-delay-us", &config->startup_delay);
- if (of_find_property(np, "enable-active-high", NULL))
- config->enable_high = true;
-
- if (of_find_property(np, "gpio-open-drain", NULL))
- config->gpio_is_open_drain = true;
+ config->enable_high = of_property_read_bool(np, "enable-active-high");
+ config->gpio_is_open_drain = of_property_read_bool(np,
+ "gpio-open-drain");
if (of_find_property(np, "vin-supply", NULL))
config->input_supply = "vin";
diff --git a/drivers/regulator/ltc3589.c b/drivers/regulator/ltc3589.c
new file mode 100644
index 00000000000..110a99ee116
--- /dev/null
+++ b/drivers/regulator/ltc3589.c
@@ -0,0 +1,554 @@
+/*
+ * Linear Technology LTC3589,LTC3589-1 regulator support
+ *
+ * Copyright (c) 2014 Philipp Zabel <p.zabel@pengutronix.de>, Pengutronix
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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/of_regulator.h>
+
+#define DRIVER_NAME "ltc3589"
+
+#define LTC3589_IRQSTAT 0x02
+#define LTC3589_SCR1 0x07
+#define LTC3589_OVEN 0x10
+#define LTC3589_SCR2 0x12
+#define LTC3589_PGSTAT 0x13
+#define LTC3589_VCCR 0x20
+#define LTC3589_CLIRQ 0x21
+#define LTC3589_B1DTV1 0x23
+#define LTC3589_B1DTV2 0x24
+#define LTC3589_VRRCR 0x25
+#define LTC3589_B2DTV1 0x26
+#define LTC3589_B2DTV2 0x27
+#define LTC3589_B3DTV1 0x29
+#define LTC3589_B3DTV2 0x2a
+#define LTC3589_L2DTV1 0x32
+#define LTC3589_L2DTV2 0x33
+
+#define LTC3589_IRQSTAT_PGOOD_TIMEOUT BIT(3)
+#define LTC3589_IRQSTAT_UNDERVOLT_WARN BIT(4)
+#define LTC3589_IRQSTAT_UNDERVOLT_FAULT BIT(5)
+#define LTC3589_IRQSTAT_THERMAL_WARN BIT(6)
+#define LTC3589_IRQSTAT_THERMAL_FAULT BIT(7)
+
+#define LTC3589_OVEN_SW1 BIT(0)
+#define LTC3589_OVEN_SW2 BIT(1)
+#define LTC3589_OVEN_SW3 BIT(2)
+#define LTC3589_OVEN_BB_OUT BIT(3)
+#define LTC3589_OVEN_LDO2 BIT(4)
+#define LTC3589_OVEN_LDO3 BIT(5)
+#define LTC3589_OVEN_LDO4 BIT(6)
+#define LTC3589_OVEN_SW_CTRL BIT(7)
+
+#define LTC3589_VCCR_SW1_GO BIT(0)
+#define LTC3589_VCCR_SW2_GO BIT(2)
+#define LTC3589_VCCR_SW3_GO BIT(4)
+#define LTC3589_VCCR_LDO2_GO BIT(6)
+
+enum ltc3589_variant {
+ LTC3589,
+ LTC3589_1,
+ LTC3589_2,
+};
+
+enum ltc3589_reg {
+ LTC3589_SW1,
+ LTC3589_SW2,
+ LTC3589_SW3,
+ LTC3589_BB_OUT,
+ LTC3589_LDO1,
+ LTC3589_LDO2,
+ LTC3589_LDO3,
+ LTC3589_LDO4,
+ LTC3589_NUM_REGULATORS,
+};
+
+struct ltc3589_regulator {
+ struct regulator_desc desc;
+
+ /* External feedback voltage divider */
+ unsigned int r1;
+ unsigned int r2;
+};
+
+struct ltc3589 {
+ struct regmap *regmap;
+ struct device *dev;
+ enum ltc3589_variant variant;
+ struct ltc3589_regulator regulator_descs[LTC3589_NUM_REGULATORS];
+ struct regulator_dev *regulators[LTC3589_NUM_REGULATORS];
+};
+
+static const int ltc3589_ldo4[] = {
+ 2800000, 2500000, 1800000, 3300000,
+};
+
+static const int ltc3589_12_ldo4[] = {
+ 1200000, 1800000, 2500000, 3200000,
+};
+
+static int ltc3589_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
+{
+ struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev);
+ int sel, shift;
+
+ if (unlikely(ramp_delay <= 0))
+ return -EINVAL;
+
+ /* VRRCR slew rate offsets are the same as VCCR go bit offsets */
+ shift = ffs(rdev->desc->apply_bit) - 1;
+
+ /* The slew rate can be set to 0.88, 1.75, 3.5, or 7 mV/uS */
+ for (sel = 0; sel < 4; sel++) {
+ if ((880 << sel) >= ramp_delay) {
+ return regmap_update_bits(ltc3589->regmap,
+ LTC3589_VRRCR,
+ 0x3 << shift, sel << shift);
+ }
+ }
+ return -EINVAL;
+}
+
+static int ltc3589_set_suspend_voltage(struct regulator_dev *rdev, int uV)
+{
+ struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev);
+ int sel;
+
+ sel = regulator_map_voltage_linear(rdev, uV, uV);
+ if (sel < 0)
+ return sel;
+
+ /* DTV2 register follows right after the corresponding DTV1 register */
+ return regmap_update_bits(ltc3589->regmap, rdev->desc->vsel_reg + 1,
+ rdev->desc->vsel_mask, sel);
+}
+
+static int ltc3589_set_suspend_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ struct ltc3589 *ltc3589 = rdev_get_drvdata(rdev);
+ int mask, bit = 0;
+
+ /* VCCR reference selects are right next to the VCCR go bits */
+ mask = rdev->desc->apply_bit << 1;
+
+ if (mode == REGULATOR_MODE_STANDBY)
+ bit = mask; /* Select DTV2 */
+
+ mask |= rdev->desc->apply_bit;
+ bit |= rdev->desc->apply_bit;
+ return regmap_update_bits(ltc3589->regmap, LTC3589_VCCR, mask, bit);
+}
+
+/* SW1, SW2, SW3, LDO2 */
+static struct regulator_ops ltc3589_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_ramp_delay = ltc3589_set_ramp_delay,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+ .set_suspend_voltage = ltc3589_set_suspend_voltage,
+ .set_suspend_mode = ltc3589_set_suspend_mode,
+};
+
+/* BB_OUT, LDO3 */
+static struct regulator_ops ltc3589_fixed_regulator_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+/* LDO1 */
+static struct regulator_ops ltc3589_fixed_standby_regulator_ops = {
+};
+
+/* LDO4 */
+static struct regulator_ops ltc3589_table_regulator_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_table,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+};
+
+
+#define LTC3589_REG(_name, _ops, en_bit, dtv1_reg, dtv_mask, go_bit) \
+ [LTC3589_ ## _name] = { \
+ .desc = { \
+ .name = #_name, \
+ .n_voltages = (dtv_mask) + 1, \
+ .min_uV = (go_bit) ? 362500 : 0, \
+ .uV_step = (go_bit) ? 12500 : 0, \
+ .ramp_delay = (go_bit) ? 1750 : 0, \
+ .fixed_uV = (dtv_mask) ? 0 : 800000, \
+ .ops = &ltc3589_ ## _ops ## _regulator_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = LTC3589_ ## _name, \
+ .owner = THIS_MODULE, \
+ .vsel_reg = (dtv1_reg), \
+ .vsel_mask = (dtv_mask), \
+ .apply_reg = (go_bit) ? LTC3589_VCCR : 0, \
+ .apply_bit = (go_bit), \
+ .enable_reg = (en_bit) ? LTC3589_OVEN : 0, \
+ .enable_mask = (en_bit), \
+ }, \
+ }
+
+#define LTC3589_LINEAR_REG(_name, _dtv1) \
+ LTC3589_REG(_name, linear, LTC3589_OVEN_ ## _name, \
+ LTC3589_ ## _dtv1, 0x1f, \
+ LTC3589_VCCR_ ## _name ## _GO)
+
+#define LTC3589_FIXED_REG(_name) \
+ LTC3589_REG(_name, fixed, LTC3589_OVEN_ ## _name, 0, 0, 0)
+
+static struct ltc3589_regulator ltc3589_regulators[LTC3589_NUM_REGULATORS] = {
+ LTC3589_LINEAR_REG(SW1, B1DTV1),
+ LTC3589_LINEAR_REG(SW2, B2DTV1),
+ LTC3589_LINEAR_REG(SW3, B3DTV1),
+ LTC3589_FIXED_REG(BB_OUT),
+ LTC3589_REG(LDO1, fixed_standby, 0, 0, 0, 0),
+ LTC3589_LINEAR_REG(LDO2, L2DTV1),
+ LTC3589_FIXED_REG(LDO3),
+ LTC3589_REG(LDO4, table, LTC3589_OVEN_LDO4, LTC3589_L2DTV2, 0x60, 0),
+};
+
+#ifdef CONFIG_OF
+static struct of_regulator_match ltc3589_matches[LTC3589_NUM_REGULATORS] = {
+ { .name = "sw1", },
+ { .name = "sw2", },
+ { .name = "sw3", },
+ { .name = "bb-out", },
+ { .name = "ldo1", }, /* standby */
+ { .name = "ldo2", },
+ { .name = "ldo3", },
+ { .name = "ldo4", },
+};
+
+static int ltc3589_parse_regulators_dt(struct ltc3589 *ltc3589)
+{
+ struct device *dev = ltc3589->dev;
+ struct device_node *node;
+ int i, ret;
+
+ node = of_find_node_by_name(dev->of_node, "regulators");
+ if (!node) {
+ dev_err(dev, "regulators node not found\n");
+ return -EINVAL;
+ }
+
+ ret = of_regulator_match(dev, node, ltc3589_matches,
+ ARRAY_SIZE(ltc3589_matches));
+ of_node_put(node);
+ if (ret < 0) {
+ dev_err(dev, "Error parsing regulator init data: %d\n", ret);
+ return ret;
+ }
+ if (ret != LTC3589_NUM_REGULATORS) {
+ dev_err(dev, "Only %d regulators described in device tree\n",
+ ret);
+ return -EINVAL;
+ }
+
+ /* Parse feedback voltage dividers. LDO3 and LDO4 don't have them */
+ for (i = 0; i < LTC3589_LDO3; i++) {
+ struct ltc3589_regulator *desc = &ltc3589->regulator_descs[i];
+ struct device_node *np = ltc3589_matches[i].of_node;
+ u32 vdiv[2];
+
+ ret = of_property_read_u32_array(np, "lltc,fb-voltage-divider",
+ vdiv, 2);
+ if (ret) {
+ dev_err(dev, "Failed to parse voltage divider: %d\n",
+ ret);
+ return ret;
+ }
+
+ desc->r1 = vdiv[0];
+ desc->r2 = vdiv[1];
+ }
+
+ return 0;
+}
+
+static inline struct regulator_init_data *match_init_data(int index)
+{
+ return ltc3589_matches[index].init_data;
+}
+
+static inline struct device_node *match_of_node(int index)
+{
+ return ltc3589_matches[index].of_node;
+}
+#else
+static inline int ltc3589_parse_regulators_dt(struct ltc3589 *ltc3589)
+{
+ return 0;
+}
+
+static inline struct regulator_init_data *match_init_data(int index)
+{
+ return NULL;
+}
+
+static inline struct device_node *match_of_node(int index)
+{
+ return NULL;
+}
+#endif
+
+static bool ltc3589_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case LTC3589_IRQSTAT:
+ case LTC3589_SCR1:
+ case LTC3589_OVEN:
+ case LTC3589_SCR2:
+ case LTC3589_VCCR:
+ case LTC3589_CLIRQ:
+ case LTC3589_B1DTV1:
+ case LTC3589_B1DTV2:
+ case LTC3589_VRRCR:
+ case LTC3589_B2DTV1:
+ case LTC3589_B2DTV2:
+ case LTC3589_B3DTV1:
+ case LTC3589_B3DTV2:
+ case LTC3589_L2DTV1:
+ case LTC3589_L2DTV2:
+ return true;
+ }
+ return false;
+}
+
+static bool ltc3589_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case LTC3589_IRQSTAT:
+ case LTC3589_SCR1:
+ case LTC3589_OVEN:
+ case LTC3589_SCR2:
+ case LTC3589_PGSTAT:
+ case LTC3589_VCCR:
+ case LTC3589_B1DTV1:
+ case LTC3589_B1DTV2:
+ case LTC3589_VRRCR:
+ case LTC3589_B2DTV1:
+ case LTC3589_B2DTV2:
+ case LTC3589_B3DTV1:
+ case LTC3589_B3DTV2:
+ case LTC3589_L2DTV1:
+ case LTC3589_L2DTV2:
+ return true;
+ }
+ return false;
+}
+
+static bool ltc3589_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case LTC3589_IRQSTAT:
+ case LTC3589_PGSTAT:
+ return true;
+ }
+ return false;
+}
+
+struct reg_default ltc3589_reg_defaults[] = {
+ { LTC3589_SCR1, 0x00 },
+ { LTC3589_OVEN, 0x00 },
+ { LTC3589_SCR2, 0x00 },
+ { LTC3589_VCCR, 0x00 },
+ { LTC3589_B1DTV1, 0x19 },
+ { LTC3589_B1DTV2, 0x19 },
+ { LTC3589_VRRCR, 0xff },
+ { LTC3589_B2DTV1, 0x19 },
+ { LTC3589_B2DTV2, 0x19 },
+ { LTC3589_B3DTV1, 0x19 },
+ { LTC3589_B3DTV2, 0x19 },
+ { LTC3589_L2DTV1, 0x19 },
+ { LTC3589_L2DTV2, 0x19 },
+};
+
+static const struct regmap_config ltc3589_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .writeable_reg = ltc3589_writeable_reg,
+ .readable_reg = ltc3589_readable_reg,
+ .volatile_reg = ltc3589_volatile_reg,
+ .max_register = LTC3589_L2DTV2,
+ .reg_defaults = ltc3589_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(ltc3589_reg_defaults),
+ .use_single_rw = true,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+
+static irqreturn_t ltc3589_isr(int irq, void *dev_id)
+{
+ struct ltc3589 *ltc3589 = dev_id;
+ unsigned int i, irqstat, event;
+
+ regmap_read(ltc3589->regmap, LTC3589_IRQSTAT, &irqstat);
+
+ if (irqstat & LTC3589_IRQSTAT_THERMAL_WARN) {
+ event = REGULATOR_EVENT_OVER_TEMP;
+ for (i = 0; i < LTC3589_NUM_REGULATORS; i++)
+ regulator_notifier_call_chain(ltc3589->regulators[i],
+ event, NULL);
+ }
+
+ if (irqstat & LTC3589_IRQSTAT_UNDERVOLT_WARN) {
+ event = REGULATOR_EVENT_UNDER_VOLTAGE;
+ for (i = 0; i < LTC3589_NUM_REGULATORS; i++)
+ regulator_notifier_call_chain(ltc3589->regulators[i],
+ event, NULL);
+ }
+
+ /* Clear warning condition */
+ regmap_write(ltc3589->regmap, LTC3589_CLIRQ, 0);
+
+ return IRQ_HANDLED;
+}
+
+static inline unsigned int ltc3589_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 void ltc3589_apply_fb_voltage_divider(struct ltc3589_regulator *rdesc)
+{
+ struct regulator_desc *desc = &rdesc->desc;
+
+ if (!rdesc->r1 || !rdesc->r2)
+ return;
+
+ desc->min_uV = ltc3589_scale(desc->min_uV, rdesc->r1, rdesc->r2);
+ desc->uV_step = ltc3589_scale(desc->uV_step, rdesc->r1, rdesc->r2);
+ desc->fixed_uV = ltc3589_scale(desc->fixed_uV, rdesc->r1, rdesc->r2);
+}
+
+static int ltc3589_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct ltc3589_regulator *descs;
+ struct ltc3589 *ltc3589;
+ int i, ret;
+
+ ltc3589 = devm_kzalloc(dev, sizeof(*ltc3589), GFP_KERNEL);
+ if (!ltc3589)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, ltc3589);
+ ltc3589->variant = id->driver_data;
+ ltc3589->dev = dev;
+
+ descs = ltc3589->regulator_descs;
+ memcpy(descs, ltc3589_regulators, sizeof(ltc3589_regulators));
+ if (ltc3589->variant == LTC3589) {
+ descs[LTC3589_LDO3].desc.fixed_uV = 1800000;
+ descs[LTC3589_LDO4].desc.volt_table = ltc3589_ldo4;
+ } else {
+ descs[LTC3589_LDO3].desc.fixed_uV = 2800000;
+ descs[LTC3589_LDO4].desc.volt_table = ltc3589_12_ldo4;
+ }
+
+ ltc3589->regmap = devm_regmap_init_i2c(client, &ltc3589_regmap_config);
+ if (IS_ERR(ltc3589->regmap)) {
+ ret = PTR_ERR(ltc3589->regmap);
+ dev_err(dev, "failed to initialize regmap: %d\n", ret);
+ return ret;
+ }
+
+ ret = ltc3589_parse_regulators_dt(ltc3589);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < LTC3589_NUM_REGULATORS; i++) {
+ struct ltc3589_regulator *rdesc = &ltc3589->regulator_descs[i];
+ struct regulator_desc *desc = &rdesc->desc;
+ struct regulator_init_data *init_data;
+ struct regulator_config config = { };
+
+ init_data = match_init_data(i);
+
+ if (i < LTC3589_LDO3)
+ ltc3589_apply_fb_voltage_divider(rdesc);
+
+ config.dev = dev;
+ config.init_data = init_data;
+ config.driver_data = ltc3589;
+ config.of_node = match_of_node(i);
+
+ ltc3589->regulators[i] = devm_regulator_register(dev, desc,
+ &config);
+ if (IS_ERR(ltc3589->regulators[i])) {
+ ret = PTR_ERR(ltc3589->regulators[i]);
+ dev_err(dev, "failed to register regulator %s: %d\n",
+ desc->name, ret);
+ return ret;
+ }
+ }
+
+ ret = devm_request_threaded_irq(dev, client->irq, NULL, ltc3589_isr,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ client->name, ltc3589);
+ if (ret) {
+ dev_err(dev, "Failed to request IRQ: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct i2c_device_id ltc3589_i2c_id[] = {
+ { "ltc3589", LTC3589 },
+ { "ltc3589-1", LTC3589_1 },
+ { "ltc3589-2", LTC3589_2 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ltc3589_i2c_id);
+
+static struct i2c_driver ltc3589_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = ltc3589_probe,
+ .id_table = ltc3589_i2c_id,
+};
+module_i2c_driver(ltc3589_driver);
+
+MODULE_AUTHOR("Philipp Zabel <p.zabel@pengutronix.de>");
+MODULE_DESCRIPTION("Regulator driver for Linear Technology LTC3589(-1,2)");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("i2c:ltc3589");
diff --git a/drivers/regulator/max8649.c b/drivers/regulator/max8649.c
index 3172da847d2..c8bddcc8f91 100644
--- a/drivers/regulator/max8649.c
+++ b/drivers/regulator/max8649.c
@@ -161,10 +161,8 @@ static int max8649_regulator_probe(struct i2c_client *client,
info = devm_kzalloc(&client->dev, sizeof(struct max8649_regulator_info),
GFP_KERNEL);
- if (!info) {
- dev_err(&client->dev, "No enough memory\n");
+ if (!info)
return -ENOMEM;
- }
info->regmap = devm_regmap_init_i2c(client, &max8649_regmap_config);
if (IS_ERR(info->regmap)) {
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index ea4f36f2cbe..ee5e67bc8d5 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -19,9 +19,7 @@
static void of_get_regulation_constraints(struct device_node *np,
struct regulator_init_data **init_data)
{
- const __be32 *min_uV, *max_uV, *uV_offset;
- const __be32 *min_uA, *max_uA, *ramp_delay;
- struct property *prop;
+ const __be32 *min_uV, *max_uV;
struct regulation_constraints *constraints = &(*init_data)->constraints;
int ret;
u32 pval;
@@ -42,36 +40,29 @@ static void of_get_regulation_constraints(struct device_node *np,
if (min_uV && max_uV && constraints->min_uV == constraints->max_uV)
constraints->apply_uV = true;
- uV_offset = of_get_property(np, "regulator-microvolt-offset", NULL);
- if (uV_offset)
- constraints->uV_offset = be32_to_cpu(*uV_offset);
- min_uA = of_get_property(np, "regulator-min-microamp", NULL);
- if (min_uA)
- constraints->min_uA = be32_to_cpu(*min_uA);
- max_uA = of_get_property(np, "regulator-max-microamp", NULL);
- if (max_uA)
- constraints->max_uA = be32_to_cpu(*max_uA);
+ if (!of_property_read_u32(np, "regulator-microvolt-offset", &pval))
+ constraints->uV_offset = pval;
+ if (!of_property_read_u32(np, "regulator-min-microamp", &pval))
+ constraints->min_uA = pval;
+ if (!of_property_read_u32(np, "regulator-max-microamp", &pval))
+ constraints->max_uA = pval;
/* Current change possible? */
if (constraints->min_uA != constraints->max_uA)
constraints->valid_ops_mask |= REGULATOR_CHANGE_CURRENT;
- if (of_find_property(np, "regulator-boot-on", NULL))
- constraints->boot_on = true;
-
- if (of_find_property(np, "regulator-always-on", NULL))
- constraints->always_on = true;
- else /* status change should be possible if not always on. */
+ constraints->boot_on = of_property_read_bool(np, "regulator-boot-on");
+ constraints->always_on = of_property_read_bool(np, "regulator-always-on");
+ if (!constraints->always_on) /* status change should be possible. */
constraints->valid_ops_mask |= REGULATOR_CHANGE_STATUS;
if (of_property_read_bool(np, "regulator-allow-bypass"))
constraints->valid_ops_mask |= REGULATOR_CHANGE_BYPASS;
- prop = of_find_property(np, "regulator-ramp-delay", NULL);
- if (prop && prop->value) {
- ramp_delay = prop->value;
- if (*ramp_delay)
- constraints->ramp_delay = be32_to_cpu(*ramp_delay);
+ ret = of_property_read_u32(np, "regulator-ramp-delay", &pval);
+ if (!ret) {
+ if (pval)
+ constraints->ramp_delay = pval;
else
constraints->ramp_disable = true;
}
@@ -106,6 +97,20 @@ struct regulator_init_data *of_get_regulator_init_data(struct device *dev,
}
EXPORT_SYMBOL_GPL(of_get_regulator_init_data);
+struct devm_of_regulator_matches {
+ struct of_regulator_match *matches;
+ unsigned int num_matches;
+};
+
+static void devm_of_regulator_put_matches(struct device *dev, void *res)
+{
+ struct devm_of_regulator_matches *devm_matches = res;
+ int i;
+
+ for (i = 0; i < devm_matches->num_matches; i++)
+ of_node_put(devm_matches->matches[i].of_node);
+}
+
/**
* of_regulator_match - extract multiple regulator init data from device tree.
* @dev: device requesting the data
@@ -119,7 +124,8 @@ EXPORT_SYMBOL_GPL(of_get_regulator_init_data);
* regulator. The data parsed from a child node will be matched to a regulator
* based on either the deprecated property regulator-compatible if present,
* or otherwise the child node's name. Note that the match table is modified
- * in place.
+ * in place and an additional of_node reference is taken for each matched
+ * regulator.
*
* Returns the number of matches found or a negative error code on failure.
*/
@@ -131,10 +137,22 @@ int of_regulator_match(struct device *dev, struct device_node *node,
unsigned int i;
const char *name;
struct device_node *child;
+ struct devm_of_regulator_matches *devm_matches;
if (!dev || !node)
return -EINVAL;
+ devm_matches = devres_alloc(devm_of_regulator_put_matches,
+ sizeof(struct devm_of_regulator_matches),
+ GFP_KERNEL);
+ if (!devm_matches)
+ return -ENOMEM;
+
+ devm_matches->matches = matches;
+ devm_matches->num_matches = num_matches;
+
+ devres_add(dev, devm_matches);
+
for (i = 0; i < num_matches; i++) {
struct of_regulator_match *match = &matches[i];
match->init_data = NULL;
@@ -162,7 +180,7 @@ int of_regulator_match(struct device *dev, struct device_node *node,
child->name);
return -EINVAL;
}
- match->of_node = child;
+ match->of_node = of_node_get(child);
count++;
break;
}
diff --git a/drivers/regulator/pbias-regulator.c b/drivers/regulator/pbias-regulator.c
index ded3b357420..6d38be3d970 100644
--- a/drivers/regulator/pbias-regulator.c
+++ b/drivers/regulator/pbias-regulator.c
@@ -38,66 +38,24 @@ struct pbias_reg_info {
struct pbias_regulator_data {
struct regulator_desc desc;
void __iomem *pbias_addr;
- unsigned int pbias_reg;
struct regulator_dev *dev;
struct regmap *syscon;
const struct pbias_reg_info *info;
int voltage;
};
-static int pbias_regulator_set_voltage(struct regulator_dev *dev,
- int min_uV, int max_uV, unsigned *selector)
-{
- struct pbias_regulator_data *data = rdev_get_drvdata(dev);
- const struct pbias_reg_info *info = data->info;
- int ret, vmode;
-
- if (min_uV <= 1800000)
- vmode = 0;
- else if (min_uV > 1800000)
- vmode = info->vmode;
-
- ret = regmap_update_bits(data->syscon, data->pbias_reg,
- info->vmode, vmode);
-
- return ret;
-}
-
-static int pbias_regulator_get_voltage(struct regulator_dev *rdev)
-{
- struct pbias_regulator_data *data = rdev_get_drvdata(rdev);
- const struct pbias_reg_info *info = data->info;
- int value, voltage;
-
- regmap_read(data->syscon, data->pbias_reg, &value);
- value &= info->vmode;
-
- voltage = value ? 3000000 : 1800000;
-
- return voltage;
-}
+static const unsigned int pbias_volt_table[] = {
+ 1800000,
+ 3000000
+};
static int pbias_regulator_enable(struct regulator_dev *rdev)
{
struct pbias_regulator_data *data = rdev_get_drvdata(rdev);
const struct pbias_reg_info *info = data->info;
- int ret;
-
- ret = regmap_update_bits(data->syscon, data->pbias_reg,
- info->enable_mask, info->enable);
-
- return ret;
-}
-
-static int pbias_regulator_disable(struct regulator_dev *rdev)
-{
- struct pbias_regulator_data *data = rdev_get_drvdata(rdev);
- const struct pbias_reg_info *info = data->info;
- int ret;
- ret = regmap_update_bits(data->syscon, data->pbias_reg,
- info->enable_mask, 0);
- return ret;
+ return regmap_update_bits(data->syscon, rdev->desc->enable_reg,
+ info->enable_mask, info->enable);
}
static int pbias_regulator_is_enable(struct regulator_dev *rdev)
@@ -106,17 +64,18 @@ static int pbias_regulator_is_enable(struct regulator_dev *rdev)
const struct pbias_reg_info *info = data->info;
int value;
- regmap_read(data->syscon, data->pbias_reg, &value);
+ regmap_read(data->syscon, rdev->desc->enable_reg, &value);
- return (value & info->enable_mask) == info->enable_mask;
+ return (value & info->enable_mask) == info->enable;
}
static struct regulator_ops pbias_regulator_voltage_ops = {
- .set_voltage = pbias_regulator_set_voltage,
- .get_voltage = pbias_regulator_get_voltage,
- .enable = pbias_regulator_enable,
- .disable = pbias_regulator_disable,
- .is_enabled = pbias_regulator_is_enable,
+ .list_voltage = regulator_list_voltage_table,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .enable = pbias_regulator_enable,
+ .disable = regulator_disable_regmap,
+ .is_enabled = pbias_regulator_is_enable,
};
static const struct pbias_reg_info pbias_mmc_omap2430 = {
@@ -192,6 +151,7 @@ static int pbias_regulator_probe(struct platform_device *pdev)
if (IS_ERR(syscon))
return PTR_ERR(syscon);
+ cfg.regmap = syscon;
cfg.dev = &pdev->dev;
for (idx = 0; idx < PBIAS_NUM_REGS && data_idx < count; idx++) {
@@ -207,15 +167,19 @@ static int pbias_regulator_probe(struct platform_device *pdev)
if (!res)
return -EINVAL;
- drvdata[data_idx].pbias_reg = res->start;
drvdata[data_idx].syscon = syscon;
drvdata[data_idx].info = info;
drvdata[data_idx].desc.name = info->name;
drvdata[data_idx].desc.owner = THIS_MODULE;
drvdata[data_idx].desc.type = REGULATOR_VOLTAGE;
drvdata[data_idx].desc.ops = &pbias_regulator_voltage_ops;
+ drvdata[data_idx].desc.volt_table = pbias_volt_table;
drvdata[data_idx].desc.n_voltages = 2;
drvdata[data_idx].desc.enable_time = info->enable_time;
+ drvdata[data_idx].desc.vsel_reg = res->start;
+ drvdata[data_idx].desc.vsel_mask = info->vmode;
+ drvdata[data_idx].desc.enable_reg = res->start;
+ drvdata[data_idx].desc.enable_mask = info->enable_mask;
cfg.init_data = pbias_matches[idx].init_data;
cfg.driver_data = &drvdata[data_idx];
diff --git a/drivers/regulator/s2mpa01.c b/drivers/regulator/s2mpa01.c
index f19a30f0fb4..a52cb1cec57 100644
--- a/drivers/regulator/s2mpa01.c
+++ b/drivers/regulator/s2mpa01.c
@@ -116,7 +116,6 @@ static int s2mpa01_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
ramp_delay = s2mpa01->ramp_delay16;
ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
- ramp_reg = S2MPA01_REG_RAMP1;
break;
case S2MPA01_BUCK2:
enable_shift = S2MPA01_BUCK2_RAMP_EN_SHIFT;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 04:56:16 +0000