--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 Starfive Technology Co., Ltd.
+ * Author: Kevin Xie <kevin.xie@starfivetech.com>
+ */
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/regulator/axp15060.h>
+#include <linux/slab.h>
+#include <linux/regulator/consumer.h>
+
+#define AXP15060_ON_OFF_CTRL_1 0x10
+#define AXP15060_ON_OFF_CTRL_2 0x11
+#define AXP15060_ON_OFF_CTRL_3 0x12
+#define AXP15060_VOL_CTRL_DCDC_1 0x13
+#define AXP15060_VOL_CTRL_DCDC_2 0x14
+#define AXP15060_VOL_CTRL_DCDC_3 0x15
+#define AXP15060_VOL_CTRL_DCDC_4 0x16
+#define AXP15060_VOL_CTRL_DCDC_5 0x17
+#define AXP15060_VOL_CTRL_DCDC_6 0x18
+#define AXP15060_VOL_CTRL_ALDO_1 0x19
+#define AXP15060_DCDC_MODE_CTRL_1 0x1A
+#define AXP15060_DCDC_MODE_CTRL_2 0x1B
+
+#define AXP15060_OUTPUT_MONITOR_OFF_DISCHARGE 0x1E
+#define AXP15060_IRQ_PWROK_VOFF_SETTING 0x1F
+#define AXP15060_VOL_CTRL_ALDO_2 0x20
+#define AXP15060_VOL_CTRL_ALDO_3 0x21
+#define AXP15060_VOL_CTRL_ALDO_4 0x22
+#define AXP15060_VOL_CTRL_ALDO_5 0x23
+#define AXP15060_VOL_CTRL_BLDO_1 0x24
+#define AXP15060_VOL_CTRL_BLDO_2 0x25
+#define AXP15060_VOL_CTRL_BLDO_3 0x26
+#define AXP15060_VOL_CTRL_BLDO_4 0x27
+#define AXP15060_VOL_CTRL_BLDO_5 0x28
+#define AXP15060_VOL_CTRL_CLDO_1 0x29
+#define AXP15060_VOL_CTRL_CLDO_2 0x2A
+/* CLDO3 voltage ctrl and CLDO3/GPIO1/Wakeup ctrl */
+#define AXP15060_VOL_CTRL_CLDO_3 0x2B
+#define AXP15060_CLDO_4_GPIO_2_CTRL 0x2C
+#define AXP15060_VOL_CTRL_CLDO_4 0x2D
+#define AXP15060_VOL_CTRL_CPUSLDO 0x2E
+
+#define AXP15060_PWR_WAKEUP_CTRL 0x31
+/* Power disable and power down sequence */
+#define AXP15060_PWR_DISABLE 0x32
+
+#define AXP15060_POK_SETTING 0x36
+
+#define AXP15060_INTERFACE_MODE_SEL 0x3E
+
+#define AXP15060_IRQ_ENABLE_1 0x40
+#define AXP15060_IRQ_ENABLE_2 0x41
+
+#define AXP15060_IRQ_STATUS_1 0x48
+#define AXP15060_IRQ_STATUS_2 0x49
+
+/* AXP15060_ON_OFF_CTRL_1 */
+#define AXP15060_PWR_OUT_DCDC1_MASK BIT(0)
+#define AXP15060_PWR_OUT_DCDC2_MASK BIT(1)
+#define AXP15060_PWR_OUT_DCDC3_MASK BIT(2)
+#define AXP15060_PWR_OUT_DCDC4_MASK BIT(3)
+#define AXP15060_PWR_OUT_DCDC5_MASK BIT(4)
+#define AXP15060_PWR_OUT_DCDC6_MASK BIT(5)
+
+/* AXP15060_ON_OFF_CTRL_2 */
+#define AXP15060_PWR_OUT_ALDO1_MASK BIT(0)
+#define AXP15060_PWR_OUT_ALDO2_MASK BIT(1)
+#define AXP15060_PWR_OUT_ALDO3_MASK BIT(2)
+#define AXP15060_PWR_OUT_ALDO4_MASK BIT(3)
+#define AXP15060_PWR_OUT_ALDO5_MASK BIT(4)
+#define AXP15060_PWR_OUT_BLDO1_MASK BIT(5)
+#define AXP15060_PWR_OUT_BLDO2_MASK BIT(6)
+#define AXP15060_PWR_OUT_BLDO3_MASK BIT(7)
+
+/* AXP15060_ON_OFF_CTRL_3 */
+#define AXP15060_PWR_OUT_BLDO4_MASK BIT(0)
+#define AXP15060_PWR_OUT_BLDO5_MASK BIT(1)
+#define AXP15060_PWR_OUT_CLDO1_MASK BIT(2)
+#define AXP15060_PWR_OUT_CLDO2_MASK BIT(3)
+#define AXP15060_PWR_OUT_CLDO3_MASK BIT(4)
+#define AXP15060_PWR_OUT_CLDO4_MASK BIT(5)
+#define AXP15060_PWR_OUT_CPULDO_MASK BIT(6)
+#define AXP15060_PWR_OUT_SWITCH_MASK BIT(7)
+
+#define AXP15060_ALDO1_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_ALDO2_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_ALDO3_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_ALDO4_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_ALDO5_V_OUT_MASK GENMASK(4, 0)
+
+#define AXP15060_BLDO1_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_BLDO2_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_BLDO3_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_BLDO4_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_BLDO5_V_OUT_MASK GENMASK(4, 0)
+
+#define AXP15060_CLDO1_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_CLDO2_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_CLDO3_V_OUT_MASK GENMASK(4, 0)
+#define AXP15060_CLDO4_V_OUT_MASK GENMASK(5, 0)
+#define AXP15060_CPUSLDO_V_OUT_MASK GENMASK(3, 0)
+
+#define AXP15060_DCDC1_V_OUT_MASK GENMASK(4, 0)
+/* DCDC2 bit7 is set by fw, which is different from datasheet desc. */
+#define AXP15060_DCDC2_V_OUT_MASK GENMASK(7, 0)
+#define AXP15060_DCDC3_V_OUT_MASK GENMASK(6, 0)
+#define AXP15060_DCDC4_V_OUT_MASK GENMASK(6, 0)
+#define AXP15060_DCDC5_V_OUT_MASK GENMASK(6, 0)
+#define AXP15060_DCDC6_V_OUT_MASK GENMASK(4, 0)
+
+#define AXP15060_DCDC2_V_OUT_RANGE1_7bit_500mV_START 0x00
+#define AXP15060_DCDC2_V_OUT_RANGE1_7bit_1200mV_END 0x46
+#define AXP15060_DCDC2_V_OUT_RANGE2_7bit_1220mV_START 0x47
+#define AXP15060_DCDC2_V_OUT_RANGE2_7bit_1540mV_END 0x57
+#define AXP15060_DCDC2_V_OUT_RANGE1_500mV_START 0x80
+#define AXP15060_DCDC2_V_OUT_RANGE1_1200mV_END 0xC6
+#define AXP15060_DCDC2_V_OUT_RANGE2_1220mV_START 0xC7
+#define AXP15060_DCDC2_V_OUT_RANGE2_1540mV_END 0xD7
+#define AXP15060_DCDC2_NUM_VOLTAGES \
+ (AXP15060_DCDC2_V_OUT_RANGE2_1540mV_END + 1)
+
+static const struct linear_range axp15060_dcdc2_ranges[] = {
+ REGULATOR_LINEAR_RANGE(500000,
+ AXP15060_DCDC2_V_OUT_RANGE1_7bit_500mV_START,
+ AXP15060_DCDC2_V_OUT_RANGE1_7bit_1200mV_END,
+ 10000),
+ REGULATOR_LINEAR_RANGE(1220000,
+ AXP15060_DCDC2_V_OUT_RANGE2_7bit_1220mV_START,
+ AXP15060_DCDC2_V_OUT_RANGE2_7bit_1540mV_END,
+ 20000),
+ REGULATOR_LINEAR_RANGE(500000,
+ AXP15060_DCDC2_V_OUT_RANGE1_500mV_START,
+ AXP15060_DCDC2_V_OUT_RANGE1_1200mV_END,
+ 10000),
+ REGULATOR_LINEAR_RANGE(1220000,
+ AXP15060_DCDC2_V_OUT_RANGE2_1220mV_START,
+ AXP15060_DCDC2_V_OUT_RANGE2_1540mV_END,
+ 20000),
+};
+
+static const struct regmap_range axp15060_writeable_ranges[] = {
+ regmap_reg_range(AXP15060_ON_OFF_CTRL_1, AXP15060_DCDC_MODE_CTRL_2),
+ regmap_reg_range(AXP15060_OUTPUT_MONITOR_OFF_DISCHARGE,
+ AXP15060_VOL_CTRL_CPUSLDO),
+ regmap_reg_range(AXP15060_PWR_WAKEUP_CTRL, AXP15060_PWR_DISABLE),
+ regmap_reg_range(AXP15060_POK_SETTING, AXP15060_POK_SETTING),
+ regmap_reg_range(AXP15060_INTERFACE_MODE_SEL, AXP15060_INTERFACE_MODE_SEL),
+ regmap_reg_range(AXP15060_IRQ_ENABLE_1, AXP15060_IRQ_ENABLE_2),
+ regmap_reg_range(AXP15060_IRQ_STATUS_1, AXP15060_IRQ_STATUS_2),
+};
+
+static const struct regmap_access_table axp15060_writeable_table = {
+ .yes_ranges = axp15060_writeable_ranges,
+ .n_yes_ranges = ARRAY_SIZE(axp15060_writeable_ranges),
+};
+
+static const struct regmap_config axp15060_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .wr_table = &axp15060_writeable_table,
+ .max_register = AXP15060_IRQ_STATUS_2,
+ .cache_type = REGCACHE_NONE,
+};
+
+static const struct regulator_ops axp15060_fixed_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+};
+
+static const struct regulator_ops axp15060_sw_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+static const struct regulator_ops axp15060_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_ops axp15060_range_ops = {
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+#define AXP15060_DESC_FIXED(_id, _match, _volt) \
+ { \
+ .name = (_match), \
+ .of_match = of_match_ptr(_match), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .type = REGULATOR_VOLTAGE, \
+ .id = AXP15060_ID_##_id, \
+ .n_voltages = 1, \
+ .owner = THIS_MODULE, \
+ .min_uV = (_volt) * 1000, \
+ .ops = &axp15060_fixed_ops, \
+ }
+
+#define AXP_DESC_SW(_id, _match, _ereg, _emask) \
+ { \
+ .name = (_match), \
+ .of_match = of_match_ptr(_match), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .type = REGULATOR_VOLTAGE, \
+ .id = AXP15060_ID_##_id, \
+ .owner = THIS_MODULE, \
+ .enable_reg = (_ereg), \
+ .enable_mask = (_emask), \
+ .ops = &axp15060_sw_ops, \
+ }
+
+#define AXP15060_DESC(_id, _match, _min, _max, _step, _vreg, \
+ _vmask, _ereg, _emask) \
+ { \
+ .name = (_match), \
+ .of_match = of_match_ptr(_match), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .type = REGULATOR_VOLTAGE, \
+ .id = AXP15060_ID_##_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 = &axp15060_ops, \
+ }
+
+#define AXP15060_DESC_RANGES(_id, _match, _ranges, _n_voltages,\
+ _vreg, _vmask, _ereg, _emask) \
+ { \
+ .name = (_match), \
+ .of_match = of_match_ptr(_match), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .type = REGULATOR_VOLTAGE, \
+ .id = AXP15060_ID_##_id, \
+ .n_voltages = (_n_voltages), \
+ .owner = THIS_MODULE, \
+ .vsel_reg = (_vreg), \
+ .vsel_mask = (_vmask), \
+ .enable_reg = (_ereg), \
+ .enable_mask = (_emask), \
+ .linear_ranges = (_ranges), \
+ .n_linear_ranges = ARRAY_SIZE(_ranges), \
+ .ops = &axp15060_range_ops, \
+ }
+/* Only register the regulators that needed to be controlled(onoff/vol) */
+static const struct regulator_desc axp15060_regulators[] = {
+ AXP15060_DESC(ALDO1, "mipi_0p9", 700, 3300, 100,
+ AXP15060_VOL_CTRL_ALDO_1, AXP15060_ALDO1_V_OUT_MASK,
+ AXP15060_ON_OFF_CTRL_2, AXP15060_PWR_OUT_ALDO1_MASK),
+
+ AXP15060_DESC(ALDO3, "hdmi_1p8", 700, 3300, 100,
+ AXP15060_VOL_CTRL_ALDO_3, AXP15060_ALDO3_V_OUT_MASK,
+ AXP15060_ON_OFF_CTRL_2, AXP15060_PWR_OUT_ALDO3_MASK),
+
+ AXP15060_DESC(ALDO4, "sdio_vdd", 700, 3300, 100,
+ AXP15060_VOL_CTRL_ALDO_4, AXP15060_ALDO4_V_OUT_MASK,
+ AXP15060_ON_OFF_CTRL_2, AXP15060_PWR_OUT_ALDO4_MASK),
+
+ AXP15060_DESC(ALDO5, "hdmi_0p9", 700, 3300, 100,
+ AXP15060_VOL_CTRL_ALDO_5, AXP15060_ALDO5_V_OUT_MASK,
+ AXP15060_ON_OFF_CTRL_2, AXP15060_PWR_OUT_ALDO5_MASK),
+
+ AXP15060_DESC_RANGES(DCDC2, "cpu_vdd_0p9",
+ axp15060_dcdc2_ranges, AXP15060_DCDC2_NUM_VOLTAGES,
+ AXP15060_VOL_CTRL_DCDC_2, AXP15060_DCDC2_V_OUT_MASK,
+ AXP15060_ON_OFF_CTRL_1, AXP15060_PWR_OUT_DCDC2_MASK),
+};
+
+static struct of_regulator_match axp15060_matches[] = {
+ { .name = "mipi_0p9", },
+ { .name = "hdmi_1p8", },
+ { .name = "sdio_vdd", },
+ { .name = "hdmi_0p9", },
+ { .name = "cpu_vdd_0p9", },
+};
+
+static int axp15060_i2c_probe(struct i2c_client *i2c)
+{
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+ struct device_node *np, *regulators;
+ struct regmap *regmap;
+ int i, ret;
+
+ np = of_node_get(i2c->dev.of_node);
+ if (!np)
+ return -EINVAL;
+
+ regulators = of_get_child_by_name(np, "regulators");
+ if (!regulators) {
+ dev_err(&i2c->dev, "Regulators node not found\n");
+ return -EINVAL;
+ }
+
+ i = of_regulator_match(&i2c->dev, regulators, axp15060_matches,
+ ARRAY_SIZE(axp15060_matches));
+ of_node_put(i2c->dev.of_node);
+ if (i < 0) {
+ dev_err(&i2c->dev, "Failed to match regulators\n");
+ return -EINVAL;
+ }
+
+ regmap = devm_regmap_init_i2c(i2c, &axp15060_regmap_config);
+ if (IS_ERR(regmap)) {
+ ret = PTR_ERR(regmap);
+ dev_err(&i2c->dev, "Failed to allocate register map: %d\n", ret);
+ return ret;
+ }
+
+ for (i = 0; i < AXP15060_MAX_REGULATORS; i++) {
+ config.dev = &i2c->dev;
+ config.regmap = regmap;
+ config.init_data = axp15060_matches[i].init_data;
+
+ rdev = devm_regulator_register(&i2c->dev,
+ &axp15060_regulators[i], &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&i2c->dev,
+ "Failed to register AXP15060 regulator\n");
+ return PTR_ERR(rdev);
+ }
+ dev_info(&i2c->dev, "Register %s done! vol range:%d ~ %d mV\n",
+ rdev->desc->name,
+ (rdev->constraints->min_uV) / 1000,
+ (rdev->constraints->max_uV) / 1000);
+ }
+
+ return 0;
+}
+
+static const struct i2c_device_id axp15060_i2c_id[] = {
+ {"axp15060_reg", 0},
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, axp15060_i2c_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id axp15060_dt_ids[] = {
+ { .compatible = "stf,axp15060-regulator",
+ .data = &axp15060_i2c_id[0] },
+ {},
+};
+MODULE_DEVICE_TABLE(of, axp15060_dt_ids);
+#endif
+
+static struct i2c_driver axp15060_regulator_driver = {
+ .driver = {
+ .name = "axp15060-regulator",
+ .of_match_table = of_match_ptr(axp15060_dt_ids),
+ },
+ .probe_new = axp15060_i2c_probe,
+ .id_table = axp15060_i2c_id,
+};
+
+module_i2c_driver(axp15060_regulator_driver);
+
+MODULE_AUTHOR("Kevin Xie <kevin.xie@starfivetech.com>");
+MODULE_DESCRIPTION("Regulator device driver for X-Powers AXP15060");
+MODULE_LICENSE("GPL v2");
projects / platform / kernel / linux-starfive.git / commitdiff