^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Regulator driver for RICOH RC5T583 power management chip.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2011-2012, NVIDIA CORPORATION. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author: Laxman dewangan <ldewangan@nvidia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * based on code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) 2011 RICOH COMPANY,LTD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/regulator/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/regulator/machine.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/mfd/rc5t583.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct rc5t583_regulator_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int deepsleep_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* Regulator register address.*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) uint8_t reg_disc_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) uint8_t disc_bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) uint8_t deepsleep_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* Regulator specific turn-on delay and voltage settling time*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) int enable_uv_per_us;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* Used by regulator core */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct regulator_desc desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static int rc5t583_regulator_enable_time(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct rc5t583_regulator_info *reg_info = rdev_get_drvdata(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) int vsel = regulator_get_voltage_sel_regmap(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int curr_uV = regulator_list_voltage_linear(rdev, vsel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return DIV_ROUND_UP(curr_uV, reg_info->enable_uv_per_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static const struct regulator_ops rc5t583_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) .is_enabled = regulator_is_enabled_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) .enable = regulator_enable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) .disable = regulator_disable_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) .enable_time = rc5t583_regulator_enable_time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) .get_voltage_sel = regulator_get_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) .set_voltage_sel = regulator_set_voltage_sel_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) .list_voltage = regulator_list_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .map_voltage = regulator_map_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) .set_voltage_time_sel = regulator_set_voltage_time_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define RC5T583_REG(_id, _en_reg, _en_bit, _disc_reg, _disc_bit, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) _vout_mask, _min_mv, _max_mv, _step_uV, _enable_mv) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .reg_disc_reg = RC5T583_REG_##_disc_reg, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .disc_bit = _disc_bit, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) .deepsleep_reg = RC5T583_REG_##_id##DAC_DS, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .enable_uv_per_us = _enable_mv * 1000, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) .deepsleep_id = RC5T583_DS_##_id, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .desc = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .name = "rc5t583-regulator-"#_id, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .id = RC5T583_REGULATOR_##_id, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) .n_voltages = (_max_mv - _min_mv) * 1000 / _step_uV + 1, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) .ops = &rc5t583_ops, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) .type = REGULATOR_VOLTAGE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) .owner = THIS_MODULE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) .vsel_reg = RC5T583_REG_##_id##DAC, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) .vsel_mask = _vout_mask, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .enable_reg = RC5T583_REG_##_en_reg, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .enable_mask = BIT(_en_bit), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .min_uV = _min_mv * 1000, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .uV_step = _step_uV, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .ramp_delay = 40 * 1000, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static struct rc5t583_regulator_info rc5t583_reg_info[RC5T583_REGULATOR_MAX] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) RC5T583_REG(DC0, DC0CTL, 0, DC0CTL, 1, 0x7F, 700, 1500, 12500, 4),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) RC5T583_REG(DC1, DC1CTL, 0, DC1CTL, 1, 0x7F, 700, 1500, 12500, 14),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) RC5T583_REG(DC2, DC2CTL, 0, DC2CTL, 1, 0x7F, 900, 2400, 12500, 14),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) RC5T583_REG(DC3, DC3CTL, 0, DC3CTL, 1, 0x7F, 900, 2400, 12500, 14),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) RC5T583_REG(LDO0, LDOEN2, 0, LDODIS2, 0, 0x7F, 900, 3400, 25000, 160),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) RC5T583_REG(LDO1, LDOEN2, 1, LDODIS2, 1, 0x7F, 900, 3400, 25000, 160),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) RC5T583_REG(LDO2, LDOEN2, 2, LDODIS2, 2, 0x7F, 900, 3400, 25000, 160),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) RC5T583_REG(LDO3, LDOEN2, 3, LDODIS2, 3, 0x7F, 900, 3400, 25000, 160),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) RC5T583_REG(LDO4, LDOEN2, 4, LDODIS2, 4, 0x3F, 750, 1500, 12500, 133),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) RC5T583_REG(LDO5, LDOEN2, 5, LDODIS2, 5, 0x7F, 900, 3400, 25000, 267),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) RC5T583_REG(LDO6, LDOEN2, 6, LDODIS2, 6, 0x7F, 900, 3400, 25000, 133),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) RC5T583_REG(LDO7, LDOEN2, 7, LDODIS2, 7, 0x7F, 900, 3400, 25000, 233),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) RC5T583_REG(LDO8, LDOEN1, 0, LDODIS1, 0, 0x7F, 900, 3400, 25000, 233),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) RC5T583_REG(LDO9, LDOEN1, 1, LDODIS1, 1, 0x7F, 900, 3400, 25000, 133),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static int rc5t583_regulator_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct rc5t583 *rc5t583 = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct rc5t583_platform_data *pdata = dev_get_platdata(rc5t583->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct regulator_config config = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct regulator_dev *rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct rc5t583_regulator_info *ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (!pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) dev_err(&pdev->dev, "No platform data, exiting...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) for (id = 0; id < RC5T583_REGULATOR_MAX; ++id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) ri = &rc5t583_reg_info[id];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (ri->deepsleep_id == RC5T583_DS_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) goto skip_ext_pwr_config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) ret = rc5t583_ext_power_req_config(rc5t583->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) ri->deepsleep_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) pdata->regulator_ext_pwr_control[id],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) pdata->regulator_deepsleep_slot[id]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * Configuring external control is not a major issue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * just give warning.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) dev_warn(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) "Failed to configure ext control %d\n", id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) skip_ext_pwr_config:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) config.dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) config.init_data = pdata->reg_init_data[id];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) config.driver_data = ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) config.regmap = rc5t583->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (IS_ERR(rdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) dev_err(&pdev->dev, "Failed to register regulator %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) ri->desc.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return PTR_ERR(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static struct platform_driver rc5t583_regulator_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .name = "rc5t583-regulator",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .probe = rc5t583_regulator_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static int __init rc5t583_regulator_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return platform_driver_register(&rc5t583_regulator_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) subsys_initcall(rc5t583_regulator_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static void __exit rc5t583_regulator_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) platform_driver_unregister(&rc5t583_regulator_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) module_exit(rc5t583_regulator_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) MODULE_DESCRIPTION("RC5T583 regulator driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) MODULE_ALIAS("platform:rc5t583-regulator");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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