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path: root/drivers/regulator/max8998.c
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Diffstat (limited to 'drivers/regulator/max8998.c')
-rw-r--r--drivers/regulator/max8998.c583
1 files changed, 225 insertions, 358 deletions
diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c
index 3027e7ce100b..254a77887f66 100644
--- a/drivers/regulator/max8998.c
+++ b/drivers/regulator/max8998.c
@@ -1,35 +1,21 @@
-/*
- * max8998.c - Voltage regulator driver for the Maxim 8998
- *
- * Copyright (C) 2009-2010 Samsung Electronics
- * Kyungmin Park <kyungmin.park@samsung.com>
- * Marek Szyprowski <m.szyprowski@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
+// SPDX-License-Identifier: GPL-2.0+
+//
+// max8998.c - Voltage regulator driver for the Maxim 8998
+//
+// Copyright (C) 2009-2010 Samsung Electronics
+// Kyungmin Park <kyungmin.park@samsung.com>
+// Marek Szyprowski <m.szyprowski@samsung.com>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/err.h>
-#include <linux/gpio.h>
+#include <linux/bits.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/of.h>
-#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
@@ -45,72 +31,13 @@ struct max8998_data {
unsigned int buck1_idx; /* index to last changed voltage */
/* value in a set */
unsigned int buck2_idx;
+ struct gpio_desc *buck1_gpio1;
+ struct gpio_desc *buck1_gpio2;
+ struct gpio_desc *buck2_gpio;
};
-struct voltage_map_desc {
- int min;
- int max;
- int step;
-};
-
-/* Voltage maps in uV*/
-static const struct voltage_map_desc ldo23_voltage_map_desc = {
- .min = 800000, .step = 50000, .max = 1300000,
-};
-static const struct voltage_map_desc ldo456711_voltage_map_desc = {
- .min = 1600000, .step = 100000, .max = 3600000,
-};
-static const struct voltage_map_desc ldo8_voltage_map_desc = {
- .min = 3000000, .step = 100000, .max = 3600000,
-};
-static const struct voltage_map_desc ldo9_voltage_map_desc = {
- .min = 2800000, .step = 100000, .max = 3100000,
-};
-static const struct voltage_map_desc ldo10_voltage_map_desc = {
- .min = 950000, .step = 50000, .max = 1300000,
-};
-static const struct voltage_map_desc ldo1213_voltage_map_desc = {
- .min = 800000, .step = 100000, .max = 3300000,
-};
-static const struct voltage_map_desc ldo1415_voltage_map_desc = {
- .min = 1200000, .step = 100000, .max = 3300000,
-};
-static const struct voltage_map_desc ldo1617_voltage_map_desc = {
- .min = 1600000, .step = 100000, .max = 3600000,
-};
-static const struct voltage_map_desc buck12_voltage_map_desc = {
- .min = 750000, .step = 25000, .max = 1525000,
-};
-static const struct voltage_map_desc buck3_voltage_map_desc = {
- .min = 1600000, .step = 100000, .max = 3600000,
-};
-static const struct voltage_map_desc buck4_voltage_map_desc = {
- .min = 800000, .step = 100000, .max = 2300000,
-};
-
-static const struct voltage_map_desc *ldo_voltage_map[] = {
- NULL,
- NULL,
- &ldo23_voltage_map_desc, /* LDO2 */
- &ldo23_voltage_map_desc, /* LDO3 */
- &ldo456711_voltage_map_desc, /* LDO4 */
- &ldo456711_voltage_map_desc, /* LDO5 */
- &ldo456711_voltage_map_desc, /* LDO6 */
- &ldo456711_voltage_map_desc, /* LDO7 */
- &ldo8_voltage_map_desc, /* LDO8 */
- &ldo9_voltage_map_desc, /* LDO9 */
- &ldo10_voltage_map_desc, /* LDO10 */
- &ldo456711_voltage_map_desc, /* LDO11 */
- &ldo1213_voltage_map_desc, /* LDO12 */
- &ldo1213_voltage_map_desc, /* LDO13 */
- &ldo1415_voltage_map_desc, /* LDO14 */
- &ldo1415_voltage_map_desc, /* LDO15 */
- &ldo1617_voltage_map_desc, /* LDO16 */
- &ldo1617_voltage_map_desc, /* LDO17 */
- &buck12_voltage_map_desc, /* BUCK1 */
- &buck12_voltage_map_desc, /* BUCK2 */
- &buck3_voltage_map_desc, /* BUCK3 */
- &buck4_voltage_map_desc, /* BUCK4 */
+static const unsigned int charger_current_table[] = {
+ 90000, 380000, 475000, 550000, 570000, 600000, 700000, 800000,
};
static int max8998_get_enable_register(struct regulator_dev *rdev,
@@ -143,6 +70,10 @@ static int max8998_get_enable_register(struct regulator_dev *rdev,
*reg = MAX8998_REG_CHGR2;
*shift = 7 - (ldo - MAX8998_ESAFEOUT1);
break;
+ case MAX8998_CHARGER:
+ *reg = MAX8998_REG_CHGR2;
+ *shift = 0;
+ break;
default:
return -EINVAL;
}
@@ -168,6 +99,11 @@ static int max8998_ldo_is_enabled(struct regulator_dev *rdev)
return val & (1 << shift);
}
+static int max8998_ldo_is_enabled_inverted(struct regulator_dev *rdev)
+{
+ return (!max8998_ldo_is_enabled(rdev));
+}
+
static int max8998_ldo_enable(struct regulator_dev *rdev)
{
struct max8998_data *max8998 = rdev_get_drvdata(rdev);
@@ -294,23 +230,22 @@ static int max8998_set_voltage_ldo_sel(struct regulator_dev *rdev,
return ret;
}
-static inline void buck1_gpio_set(int gpio1, int gpio2, int v)
+static inline void buck1_gpio_set(struct gpio_desc *gpio1, struct gpio_desc *gpio2, int v)
{
- gpio_set_value(gpio1, v & 0x1);
- gpio_set_value(gpio2, (v >> 1) & 0x1);
+ gpiod_set_value(gpio1, v & 0x1);
+ gpiod_set_value(gpio2, (v >> 1) & 0x1);
}
-static inline void buck2_gpio_set(int gpio, int v)
+static inline void buck2_gpio_set(struct gpio_desc *gpio, int v)
{
- gpio_set_value(gpio, v & 0x1);
+ gpiod_set_value(gpio, v & 0x1);
}
static int max8998_set_voltage_buck_sel(struct regulator_dev *rdev,
unsigned selector)
{
struct max8998_data *max8998 = rdev_get_drvdata(rdev);
- struct max8998_platform_data *pdata =
- dev_get_platdata(max8998->iodev->dev);
+ struct max8998_platform_data *pdata = max8998->iodev->pdata;
struct i2c_client *i2c = max8998->iodev->i2c;
int buck = rdev_get_id(rdev);
int reg, shift = 0, mask, ret, j;
@@ -328,16 +263,15 @@ static int max8998_set_voltage_buck_sel(struct regulator_dev *rdev,
selector, max8998->buck1_vol[0], max8998->buck1_vol[1],
max8998->buck1_vol[2], max8998->buck1_vol[3]);
- if (gpio_is_valid(pdata->buck1_set1) &&
- gpio_is_valid(pdata->buck1_set2)) {
+ if (max8998->buck1_gpio1 && max8998->buck1_gpio2) {
/* check if requested voltage */
/* value is already defined */
for (j = 0; j < ARRAY_SIZE(max8998->buck1_vol); j++) {
if (max8998->buck1_vol[j] == selector) {
max8998->buck1_idx = j;
- buck1_gpio_set(pdata->buck1_set1,
- pdata->buck1_set2, j);
+ buck1_gpio_set(max8998->buck1_gpio1,
+ max8998->buck1_gpio2, j);
goto buck1_exit;
}
}
@@ -354,13 +288,13 @@ static int max8998_set_voltage_buck_sel(struct regulator_dev *rdev,
&shift,
&mask);
ret = max8998_write_reg(i2c, reg, selector);
- buck1_gpio_set(pdata->buck1_set1,
- pdata->buck1_set2, max8998->buck1_idx);
+ buck1_gpio_set(max8998->buck1_gpio1,
+ max8998->buck1_gpio2, max8998->buck1_idx);
buck1_last_val++;
buck1_exit:
dev_dbg(max8998->dev, "%s: SET1:%d, SET2:%d\n",
- i2c->name, gpio_get_value(pdata->buck1_set1),
- gpio_get_value(pdata->buck1_set2));
+ i2c->name, gpiod_get_value(max8998->buck1_gpio1),
+ gpiod_get_value(max8998->buck1_gpio2));
break;
} else {
ret = max8998_write_reg(i2c, reg, selector);
@@ -371,14 +305,13 @@ buck1_exit:
dev_dbg(max8998->dev,
"BUCK2, selector:%d buck2_vol1:%d, buck2_vol2:%d\n",
selector, max8998->buck2_vol[0], max8998->buck2_vol[1]);
- if (gpio_is_valid(pdata->buck2_set3)) {
-
+ if (max8998->buck2_gpio) {
/* check if requested voltage */
/* value is already defined */
for (j = 0; j < ARRAY_SIZE(max8998->buck2_vol); j++) {
if (max8998->buck2_vol[j] == selector) {
max8998->buck2_idx = j;
- buck2_gpio_set(pdata->buck2_set3, j);
+ buck2_gpio_set(max8998->buck2_gpio, j);
goto buck2_exit;
}
}
@@ -390,10 +323,10 @@ buck1_exit:
&reg, &shift, &mask);
ret = max8998_write_reg(i2c, reg, selector);
max8998->buck2_vol[max8998->buck2_idx] = selector;
- buck2_gpio_set(pdata->buck2_set3, max8998->buck2_idx);
+ buck2_gpio_set(max8998->buck2_gpio, max8998->buck2_idx);
buck2_exit:
dev_dbg(max8998->dev, "%s: SET3:%d\n", i2c->name,
- gpio_get_value(pdata->buck2_set3));
+ gpiod_get_value(max8998->buck2_gpio));
} else {
ret = max8998_write_reg(i2c, reg, selector);
}
@@ -415,7 +348,6 @@ static int max8998_set_voltage_buck_time_sel(struct regulator_dev *rdev,
{
struct max8998_data *max8998 = rdev_get_drvdata(rdev);
struct i2c_client *i2c = max8998->iodev->i2c;
- const struct voltage_map_desc *desc;
int buck = rdev_get_id(rdev);
u8 val = 0;
int difference, ret;
@@ -423,8 +355,6 @@ static int max8998_set_voltage_buck_time_sel(struct regulator_dev *rdev,
if (buck < MAX8998_BUCK1 || buck > MAX8998_BUCK4)
return -EINVAL;
- desc = ldo_voltage_map[buck];
-
/* Voltage stabilization */
ret = max8998_read_reg(i2c, MAX8998_REG_ONOFF4, &val);
if (ret)
@@ -435,14 +365,82 @@ static int max8998_set_voltage_buck_time_sel(struct regulator_dev *rdev,
if (max8998->iodev->type == TYPE_MAX8998 && !(val & MAX8998_ENRAMP))
return 0;
- difference = (new_selector - old_selector) * desc->step / 1000;
+ difference = (new_selector - old_selector) * rdev->desc->uV_step / 1000;
if (difference > 0)
return DIV_ROUND_UP(difference, (val & 0x0f) + 1);
return 0;
}
-static struct regulator_ops max8998_ldo_ops = {
+static int max8998_set_current_limit(struct regulator_dev *rdev,
+ int min_uA, int max_uA)
+{
+ struct max8998_data *max8998 = rdev_get_drvdata(rdev);
+ struct i2c_client *i2c = max8998->iodev->i2c;
+ unsigned int n_currents = rdev->desc->n_current_limits;
+ int i, sel = -1;
+
+ if (n_currents == 0)
+ return -EINVAL;
+
+ if (rdev->desc->curr_table) {
+ const unsigned int *curr_table = rdev->desc->curr_table;
+ bool ascend = curr_table[n_currents - 1] > curr_table[0];
+
+ /* search for closest to maximum */
+ if (ascend) {
+ for (i = n_currents - 1; i >= 0; i--) {
+ if (min_uA <= curr_table[i] &&
+ curr_table[i] <= max_uA) {
+ sel = i;
+ break;
+ }
+ }
+ } else {
+ for (i = 0; i < n_currents; i++) {
+ if (min_uA <= curr_table[i] &&
+ curr_table[i] <= max_uA) {
+ sel = i;
+ break;
+ }
+ }
+ }
+ }
+
+ if (sel < 0)
+ return -EINVAL;
+
+ sel <<= ffs(rdev->desc->csel_mask) - 1;
+
+ return max8998_update_reg(i2c, rdev->desc->csel_reg,
+ sel, rdev->desc->csel_mask);
+}
+
+static int max8998_get_current_limit(struct regulator_dev *rdev)
+{
+ struct max8998_data *max8998 = rdev_get_drvdata(rdev);
+ struct i2c_client *i2c = max8998->iodev->i2c;
+ u8 val;
+ int ret;
+
+ ret = max8998_read_reg(i2c, rdev->desc->csel_reg, &val);
+ if (ret != 0)
+ return ret;
+
+ val &= rdev->desc->csel_mask;
+ val >>= ffs(rdev->desc->csel_mask) - 1;
+
+ if (rdev->desc->curr_table) {
+ if (val >= rdev->desc->n_current_limits)
+ return -EINVAL;
+
+ return rdev->desc->curr_table[val];
+ }
+
+ return -EINVAL;
+}
+
+static const struct regulator_ops max8998_ldo_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.is_enabled = max8998_ldo_is_enabled,
@@ -452,7 +450,7 @@ static struct regulator_ops max8998_ldo_ops = {
.set_voltage_sel = max8998_set_voltage_ldo_sel,
};
-static struct regulator_ops max8998_buck_ops = {
+static const struct regulator_ops max8998_buck_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.is_enabled = max8998_ldo_is_enabled,
@@ -463,195 +461,84 @@ static struct regulator_ops max8998_buck_ops = {
.set_voltage_time_sel = max8998_set_voltage_buck_time_sel,
};
-static struct regulator_ops max8998_others_ops = {
+static const struct regulator_ops max8998_charger_ops = {
+ .set_current_limit = max8998_set_current_limit,
+ .get_current_limit = max8998_get_current_limit,
+ .is_enabled = max8998_ldo_is_enabled_inverted,
+ /* Swapped as register is inverted */
+ .enable = max8998_ldo_disable,
+ .disable = max8998_ldo_enable,
+};
+
+static const struct regulator_ops max8998_others_ops = {
.is_enabled = max8998_ldo_is_enabled,
.enable = max8998_ldo_enable,
.disable = max8998_ldo_disable,
};
-static struct regulator_desc regulators[] = {
- {
- .name = "LDO2",
- .id = MAX8998_LDO2,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO3",
- .id = MAX8998_LDO3,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO4",
- .id = MAX8998_LDO4,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO5",
- .id = MAX8998_LDO5,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO6",
- .id = MAX8998_LDO6,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO7",
- .id = MAX8998_LDO7,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO8",
- .id = MAX8998_LDO8,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO9",
- .id = MAX8998_LDO9,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO10",
- .id = MAX8998_LDO10,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO11",
- .id = MAX8998_LDO11,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO12",
- .id = MAX8998_LDO12,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO13",
- .id = MAX8998_LDO13,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO14",
- .id = MAX8998_LDO14,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO15",
- .id = MAX8998_LDO15,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO16",
- .id = MAX8998_LDO16,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "LDO17",
- .id = MAX8998_LDO17,
- .ops = &max8998_ldo_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "BUCK1",
- .id = MAX8998_BUCK1,
- .ops = &max8998_buck_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "BUCK2",
- .id = MAX8998_BUCK2,
- .ops = &max8998_buck_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "BUCK3",
- .id = MAX8998_BUCK3,
- .ops = &max8998_buck_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "BUCK4",
- .id = MAX8998_BUCK4,
- .ops = &max8998_buck_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "EN32KHz-AP",
- .id = MAX8998_EN32KHZ_AP,
- .ops = &max8998_others_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "EN32KHz-CP",
- .id = MAX8998_EN32KHZ_CP,
- .ops = &max8998_others_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "ENVICHG",
- .id = MAX8998_ENVICHG,
- .ops = &max8998_others_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "ESAFEOUT1",
- .id = MAX8998_ESAFEOUT1,
- .ops = &max8998_others_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "ESAFEOUT2",
- .id = MAX8998_ESAFEOUT2,
- .ops = &max8998_others_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }
-};
-
-static int max8998_pmic_dt_parse_dvs_gpio(struct max8998_dev *iodev,
- struct max8998_platform_data *pdata,
- struct device_node *pmic_np)
-{
- int gpio;
-
- gpio = of_get_named_gpio(pmic_np, "max8998,pmic-buck1-dvs-gpios", 0);
- if (!gpio_is_valid(gpio)) {
- dev_err(iodev->dev, "invalid buck1 gpio[0]: %d\n", gpio);
- return -EINVAL;
+#define MAX8998_LINEAR_REG(_name, _ops, _min, _step, _max) \
+ { \
+ .name = #_name, \
+ .id = MAX8998_##_name, \
+ .ops = _ops, \
+ .min_uV = (_min), \
+ .uV_step = (_step), \
+ .n_voltages = ((_max) - (_min)) / (_step) + 1, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
}
- pdata->buck1_set1 = gpio;
- gpio = of_get_named_gpio(pmic_np, "max8998,pmic-buck1-dvs-gpios", 1);
- if (!gpio_is_valid(gpio)) {
- dev_err(iodev->dev, "invalid buck1 gpio[1]: %d\n", gpio);
- return -EINVAL;
+#define MAX8998_CURRENT_REG(_name, _ops, _table, _reg, _mask) \
+ { \
+ .name = #_name, \
+ .id = MAX8998_##_name, \
+ .ops = _ops, \
+ .curr_table = _table, \
+ .n_current_limits = ARRAY_SIZE(_table), \
+ .csel_reg = _reg, \
+ .csel_mask = _mask, \
+ .type = REGULATOR_CURRENT, \
+ .owner = THIS_MODULE, \
}
- pdata->buck1_set2 = gpio;
- gpio = of_get_named_gpio(pmic_np, "max8998,pmic-buck2-dvs-gpio", 0);
- if (!gpio_is_valid(gpio)) {
- dev_err(iodev->dev, "invalid buck 2 gpio: %d\n", gpio);
- return -EINVAL;
+#define MAX8998_OTHERS_REG(_name, _id) \
+ { \
+ .name = #_name, \
+ .id = _id, \
+ .ops = &max8998_others_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
}
- pdata->buck2_set3 = gpio;
- return 0;
-}
+static const struct regulator_desc regulators[] = {
+ MAX8998_LINEAR_REG(LDO2, &max8998_ldo_ops, 800000, 50000, 1300000),
+ MAX8998_LINEAR_REG(LDO3, &max8998_ldo_ops, 800000, 50000, 1300000),
+ MAX8998_LINEAR_REG(LDO4, &max8998_ldo_ops, 1600000, 100000, 3600000),
+ MAX8998_LINEAR_REG(LDO5, &max8998_ldo_ops, 1600000, 100000, 3600000),
+ MAX8998_LINEAR_REG(LDO6, &max8998_ldo_ops, 1600000, 100000, 3600000),
+ MAX8998_LINEAR_REG(LDO7, &max8998_ldo_ops, 1600000, 100000, 3600000),
+ MAX8998_LINEAR_REG(LDO8, &max8998_ldo_ops, 3000000, 100000, 3600000),
+ MAX8998_LINEAR_REG(LDO9, &max8998_ldo_ops, 2800000, 100000, 3100000),
+ MAX8998_LINEAR_REG(LDO10, &max8998_ldo_ops, 950000, 50000, 1300000),
+ MAX8998_LINEAR_REG(LDO11, &max8998_ldo_ops, 1600000, 100000, 3600000),
+ MAX8998_LINEAR_REG(LDO12, &max8998_ldo_ops, 800000, 100000, 3300000),
+ MAX8998_LINEAR_REG(LDO13, &max8998_ldo_ops, 800000, 100000, 3300000),
+ MAX8998_LINEAR_REG(LDO14, &max8998_ldo_ops, 1200000, 100000, 3300000),
+ MAX8998_LINEAR_REG(LDO15, &max8998_ldo_ops, 1200000, 100000, 3300000),
+ MAX8998_LINEAR_REG(LDO16, &max8998_ldo_ops, 1600000, 100000, 3600000),
+ MAX8998_LINEAR_REG(LDO17, &max8998_ldo_ops, 1600000, 100000, 3600000),
+ MAX8998_LINEAR_REG(BUCK1, &max8998_buck_ops, 750000, 25000, 1525000),
+ MAX8998_LINEAR_REG(BUCK2, &max8998_buck_ops, 750000, 25000, 1525000),
+ MAX8998_LINEAR_REG(BUCK3, &max8998_buck_ops, 1600000, 100000, 3600000),
+ MAX8998_LINEAR_REG(BUCK4, &max8998_buck_ops, 800000, 100000, 2300000),
+ MAX8998_OTHERS_REG(EN32KHz-AP, MAX8998_EN32KHZ_AP),
+ MAX8998_OTHERS_REG(EN32KHz-CP, MAX8998_EN32KHZ_CP),
+ MAX8998_OTHERS_REG(ENVICHG, MAX8998_ENVICHG),
+ MAX8998_OTHERS_REG(ESAFEOUT1, MAX8998_ESAFEOUT1),
+ MAX8998_OTHERS_REG(ESAFEOUT2, MAX8998_ESAFEOUT2),
+ MAX8998_CURRENT_REG(CHARGER, &max8998_charger_ops,
+ charger_current_table, MAX8998_REG_CHGR1, 0x7),
+};
static int max8998_pmic_dt_parse_pdata(struct max8998_dev *iodev,
struct max8998_platform_data *pdata)
@@ -671,8 +558,9 @@ static int max8998_pmic_dt_parse_pdata(struct max8998_dev *iodev,
/* count the number of regulators to be supported in pmic */
pdata->num_regulators = of_get_child_count(regulators_np);
- rdata = devm_kzalloc(iodev->dev, sizeof(*rdata) *
- pdata->num_regulators, GFP_KERNEL);
+ rdata = devm_kcalloc(iodev->dev,
+ pdata->num_regulators, sizeof(*rdata),
+ GFP_KERNEL);
if (!rdata) {
of_node_put(regulators_np);
return -ENOMEM;
@@ -697,12 +585,7 @@ static int max8998_pmic_dt_parse_pdata(struct max8998_dev *iodev,
of_node_put(reg_np);
of_node_put(regulators_np);
- ret = max8998_pmic_dt_parse_dvs_gpio(iodev, pdata, pmic_np);
- if (ret)
- return -EINVAL;
-
- if (of_find_property(pmic_np, "max8998,pmic-buck-voltage-lock", NULL))
- pdata->buck_voltage_lock = true;
+ pdata->buck_voltage_lock = of_property_read_bool(pmic_np, "max8998,pmic-buck-voltage-lock");
ret = of_property_read_u32(pmic_np,
"max8998,pmic-buck1-default-dvs-idx",
@@ -749,6 +632,7 @@ static int max8998_pmic_probe(struct platform_device *pdev)
struct regulator_dev *rdev;
struct max8998_data *max8998;
struct i2c_client *i2c;
+ enum gpiod_flags flags;
int i, ret;
unsigned int v;
@@ -777,42 +661,45 @@ static int max8998_pmic_probe(struct platform_device *pdev)
max8998->buck1_idx = pdata->buck1_default_idx;
max8998->buck2_idx = pdata->buck2_default_idx;
- /* NOTE: */
- /* For unused GPIO NOT marked as -1 (thereof equal to 0) WARN_ON */
- /* will be displayed */
-
/* Check if MAX8998 voltage selection GPIOs are defined */
- if (gpio_is_valid(pdata->buck1_set1) &&
- gpio_is_valid(pdata->buck1_set2)) {
- /* Check if SET1 is not equal to 0 */
- if (!pdata->buck1_set1) {
- dev_err(&pdev->dev,
- "MAX8998 SET1 GPIO defined as 0 !\n");
- WARN_ON(!pdata->buck1_set1);
- return -EIO;
- }
- /* Check if SET2 is not equal to 0 */
- if (!pdata->buck1_set2) {
- dev_err(&pdev->dev,
- "MAX8998 SET2 GPIO defined as 0 !\n");
- WARN_ON(!pdata->buck1_set2);
- return -EIO;
- }
-
- gpio_request(pdata->buck1_set1, "MAX8998 BUCK1_SET1");
- gpio_direction_output(pdata->buck1_set1,
- max8998->buck1_idx & 0x1);
-
-
- gpio_request(pdata->buck1_set2, "MAX8998 BUCK1_SET2");
- gpio_direction_output(pdata->buck1_set2,
- (max8998->buck1_idx >> 1) & 0x1);
-
+ flags = (max8998->buck1_idx & BIT(0)) ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
+ max8998->buck1_gpio1 = devm_gpiod_get_index_optional(iodev->dev,
+ "max8998,pmic-buck1-dvs",
+ 0,
+ flags);
+ if (IS_ERR(max8998->buck1_gpio1))
+ return dev_err_probe(&pdev->dev, PTR_ERR(max8998->buck1_gpio1),
+ "could not get BUCK1 GPIO1\n");
+ gpiod_set_consumer_name(max8998->buck1_gpio1, "MAX8998 BUCK1_SET1");
+
+ flags = (max8998->buck1_idx & BIT(1)) ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
+ max8998->buck1_gpio2 = devm_gpiod_get_index_optional(iodev->dev,
+ "max8998,pmic-buck1-dvs",
+ 1,
+ flags);
+ if (IS_ERR(max8998->buck1_gpio2))
+ return dev_err_probe(&pdev->dev, PTR_ERR(max8998->buck1_gpio2),
+ "could not get BUCK1 GPIO2\n");
+ gpiod_set_consumer_name(max8998->buck1_gpio1, "MAX8998 BUCK1_SET2");
+
+ flags = (max8998->buck2_idx & BIT(0)) ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
+ max8998->buck2_gpio = devm_gpiod_get_index_optional(iodev->dev,
+ "max8998,pmic-buck2-dvs",
+ 0,
+ flags);
+ if (IS_ERR(max8998->buck2_gpio))
+ return dev_err_probe(&pdev->dev, PTR_ERR(max8998->buck2_gpio),
+ "could not get BUCK2 GPIO\n");
+ gpiod_set_consumer_name(max8998->buck1_gpio1, "MAX8998 BUCK2_SET3");
+
+ if (max8998->buck1_gpio1 && max8998->buck1_gpio2) {
/* Set predefined values for BUCK1 registers */
for (v = 0; v < ARRAY_SIZE(pdata->buck1_voltage); ++v) {
+ int index = MAX8998_BUCK1 - MAX8998_LDO2;
+
i = 0;
- while (buck12_voltage_map_desc.min +
- buck12_voltage_map_desc.step*i
+ while (regulators[index].min_uV +
+ regulators[index].uV_step * i
< pdata->buck1_voltage[v])
i++;
@@ -824,23 +711,14 @@ static int max8998_pmic_probe(struct platform_device *pdev)
}
}
- if (gpio_is_valid(pdata->buck2_set3)) {
- /* Check if SET3 is not equal to 0 */
- if (!pdata->buck2_set3) {
- dev_err(&pdev->dev,
- "MAX8998 SET3 GPIO defined as 0 !\n");
- WARN_ON(!pdata->buck2_set3);
- return -EIO;
- }
- gpio_request(pdata->buck2_set3, "MAX8998 BUCK2_SET3");
- gpio_direction_output(pdata->buck2_set3,
- max8998->buck2_idx & 0x1);
-
+ if (max8998->buck2_gpio) {
/* Set predefined values for BUCK2 registers */
for (v = 0; v < ARRAY_SIZE(pdata->buck2_voltage); ++v) {
+ int index = MAX8998_BUCK2 - MAX8998_LDO2;
+
i = 0;
- while (buck12_voltage_map_desc.min +
- buck12_voltage_map_desc.step*i
+ while (regulators[index].min_uV +
+ regulators[index].uV_step * i
< pdata->buck2_voltage[v])
i++;
@@ -853,18 +731,7 @@ static int max8998_pmic_probe(struct platform_device *pdev)
}
for (i = 0; i < pdata->num_regulators; i++) {
- const struct voltage_map_desc *desc;
- int id = pdata->regulators[i].id;
- int index = id - MAX8998_LDO2;
-
- desc = ldo_voltage_map[id];
- if (desc && regulators[index].ops != &max8998_others_ops) {
- int count = (desc->max - desc->min) / desc->step + 1;
-
- regulators[index].n_voltages = count;
- regulators[index].min_uV = desc->min;
- regulators[index].uV_step = desc->step;
- }
+ int index = pdata->regulators[i].id - MAX8998_LDO2;
config.dev = max8998->dev;
config.of_node = pdata->regulators[i].reg_node;
@@ -881,7 +748,6 @@ static int max8998_pmic_probe(struct platform_device *pdev)
}
}
-
return 0;
}
@@ -895,6 +761,7 @@ MODULE_DEVICE_TABLE(platform, max8998_pmic_id);
static struct platform_driver max8998_pmic_driver = {
.driver = {
.name = "max8998-pmic",
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
.probe = max8998_pmic_probe,
.id_table = max8998_pmic_id,
generated by cgit (git 2.34.1) at 2025-12-25 10:00:56 +0000