Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Regulator driver for LP87565 PMIC
 *
 * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
 */
 
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
 
#include <linux/mfd/lp87565.h>
 
#define LP87565_REGULATOR(_name, _id, _of, _ops, _n, _vr, _vm,		\
<------><------><------>  _er, _em, _ev, _delay, _lr, _cr)		\
<------>[_id] = {							\
<------><------>.desc = {						\
<------><------><------>.name			= _name,		\
<------><------><------>.supply_name		= _of "-in",		\
<------><------><------>.id			= _id,			\
<------><------><------>.of_match		= of_match_ptr(_of),	\
<------><------><------>.regulators_node	= of_match_ptr("regulators"),\
<------><------><------>.ops			= &_ops,		\
<------><------><------>.n_voltages		= _n,			\
<------><------><------>.type			= REGULATOR_VOLTAGE,	\
<------><------><------>.owner			= THIS_MODULE,		\
<------><------><------>.vsel_reg		= _vr,			\
<------><------><------>.vsel_mask		= _vm,			\
<------><------><------>.enable_reg		= _er,			\
<------><------><------>.enable_mask		= _em,			\
<------><------><------>.enable_val		= _ev,			\
<------><------><------>.ramp_delay		= _delay,		\
<------><------><------>.linear_ranges		= _lr,			\
<------><------><------>.n_linear_ranges	= ARRAY_SIZE(_lr),	\
<------><------><------>.curr_table = lp87565_buck_uA,			\
<------><------><------>.n_current_limits = ARRAY_SIZE(lp87565_buck_uA),\
<------><------><------>.csel_reg = (_cr),				\
<------><------><------>.csel_mask = LP87565_BUCK_CTRL_2_ILIM,		\
<------><------>},							\
<------><------>.ctrl2_reg = _cr,					\
<------>}
 
struct lp87565_regulator {
<------>struct regulator_desc desc;
<------>unsigned int ctrl2_reg;
};
 
static const struct lp87565_regulator regulators[];
 
static const struct linear_range buck0_1_2_3_ranges[] = {
<------>REGULATOR_LINEAR_RANGE(600000, 0xA, 0x17, 10000),
<------>REGULATOR_LINEAR_RANGE(735000, 0x18, 0x9d, 5000),
<------>REGULATOR_LINEAR_RANGE(1420000, 0x9e, 0xff, 20000),
};
 
static const unsigned int lp87565_buck_ramp_delay[] = {
<------>30000, 15000, 10000, 7500, 3800, 1900, 940, 470
};
 
/* LP87565 BUCK current limit */
static const unsigned int lp87565_buck_uA[] = {
<------>1500000, 2000000, 2500000, 3000000, 3500000, 4000000, 4500000, 5000000,
};
 
static int lp87565_buck_set_ramp_delay(struct regulator_dev *rdev,
<------><------><------><------>       int ramp_delay)
{
<------>int id = rdev_get_id(rdev);
<------>unsigned int reg;
<------>int ret;
 
<------>if (ramp_delay <= 470)
<------><------>reg = 7;
<------>else if (ramp_delay <= 940)
<------><------>reg = 6;
<------>else if (ramp_delay <= 1900)
<------><------>reg = 5;
<------>else if (ramp_delay <= 3800)
<------><------>reg = 4;
<------>else if (ramp_delay <= 7500)
<------><------>reg = 3;
<------>else if (ramp_delay <= 10000)
<------><------>reg = 2;
<------>else if (ramp_delay <= 15000)
<------><------>reg = 1;
<------>else
<------><------>reg = 0;
 
<------>ret = regmap_update_bits(rdev->regmap, regulators[id].ctrl2_reg,
<------><------><------><------> LP87565_BUCK_CTRL_2_SLEW_RATE,
<------><------><------><------> reg << __ffs(LP87565_BUCK_CTRL_2_SLEW_RATE));
<------>if (ret) {
<------><------>dev_err(&rdev->dev, "SLEW RATE write failed: %d\n", ret);
<------><------>return ret;
<------>}
 
<------>rdev->constraints->ramp_delay = lp87565_buck_ramp_delay[reg];
 
<------>/* Conservatively give a 15% margin */
<------>rdev->constraints->ramp_delay =
<------><------><------><------>rdev->constraints->ramp_delay * 85 / 100;
 
<------>return 0;
}
 
/* Operations permitted on BUCKs */
static const struct regulator_ops lp87565_buck_ops = {
<------>.is_enabled		= regulator_is_enabled_regmap,
<------>.enable			= regulator_enable_regmap,
<------>.disable		= regulator_disable_regmap,
<------>.get_voltage_sel	= regulator_get_voltage_sel_regmap,
<------>.set_voltage_sel	= regulator_set_voltage_sel_regmap,
<------>.list_voltage		= regulator_list_voltage_linear_range,
<------>.map_voltage		= regulator_map_voltage_linear_range,
<------>.set_voltage_time_sel	= regulator_set_voltage_time_sel,
<------>.set_ramp_delay		= lp87565_buck_set_ramp_delay,
<------>.set_current_limit	= regulator_set_current_limit_regmap,
<------>.get_current_limit	= regulator_get_current_limit_regmap,
};
 
static const struct lp87565_regulator regulators[] = {
<------>LP87565_REGULATOR("BUCK0", LP87565_BUCK_0, "buck0", lp87565_buck_ops,
<------><------><------>  256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
<------><------><------>  LP87565_REG_BUCK0_CTRL_1,
<------><------><------>  LP87565_BUCK_CTRL_1_EN |
<------><------><------>  LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
<------><------><------>  LP87565_BUCK_CTRL_1_EN, 3230,
<------><------><------>  buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
<------>LP87565_REGULATOR("BUCK1", LP87565_BUCK_1, "buck1", lp87565_buck_ops,
<------><------><------>  256, LP87565_REG_BUCK1_VOUT, LP87565_BUCK_VSET,
<------><------><------>  LP87565_REG_BUCK1_CTRL_1,
<------><------><------>  LP87565_BUCK_CTRL_1_EN |
<------><------><------>  LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
<------><------><------>  LP87565_BUCK_CTRL_1_EN, 3230,
<------><------><------>  buck0_1_2_3_ranges, LP87565_REG_BUCK1_CTRL_2),
<------>LP87565_REGULATOR("BUCK2", LP87565_BUCK_2, "buck2", lp87565_buck_ops,
<------><------><------>  256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
<------><------><------>  LP87565_REG_BUCK2_CTRL_1,
<------><------><------>  LP87565_BUCK_CTRL_1_EN |
<------><------><------>  LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
<------><------><------>  LP87565_BUCK_CTRL_1_EN, 3230,
<------><------><------>  buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
<------>LP87565_REGULATOR("BUCK3", LP87565_BUCK_3, "buck3", lp87565_buck_ops,
<------><------><------>  256, LP87565_REG_BUCK3_VOUT, LP87565_BUCK_VSET,
<------><------><------>  LP87565_REG_BUCK3_CTRL_1,
<------><------><------>  LP87565_BUCK_CTRL_1_EN |
<------><------><------>  LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
<------><------><------>  LP87565_BUCK_CTRL_1_EN, 3230,
<------><------><------>  buck0_1_2_3_ranges, LP87565_REG_BUCK3_CTRL_2),
<------>LP87565_REGULATOR("BUCK10", LP87565_BUCK_10, "buck10", lp87565_buck_ops,
<------><------><------>  256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
<------><------><------>  LP87565_REG_BUCK0_CTRL_1,
<------><------><------>  LP87565_BUCK_CTRL_1_EN |
<------><------><------>  LP87565_BUCK_CTRL_1_EN_PIN_CTRL |
<------><------><------>  LP87565_BUCK_CTRL_1_FPWM_MP_0_2,
<------><------><------>  LP87565_BUCK_CTRL_1_EN |
<------><------><------>  LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
<------><------><------>  buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
<------>LP87565_REGULATOR("BUCK23", LP87565_BUCK_23, "buck23", lp87565_buck_ops,
<------><------><------>  256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
<------><------><------>  LP87565_REG_BUCK2_CTRL_1,
<------><------><------>  LP87565_BUCK_CTRL_1_EN |
<------><------><------>  LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
<------><------><------>  LP87565_BUCK_CTRL_1_EN, 3230,
<------><------><------>  buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
<------>LP87565_REGULATOR("BUCK3210", LP87565_BUCK_3210, "buck3210",
<------><------><------>  lp87565_buck_ops, 256, LP87565_REG_BUCK0_VOUT,
<------><------><------>  LP87565_BUCK_VSET, LP87565_REG_BUCK0_CTRL_1,
<------><------><------>  LP87565_BUCK_CTRL_1_EN |
<------><------><------>  LP87565_BUCK_CTRL_1_EN_PIN_CTRL |
<------><------><------>  LP87565_BUCK_CTRL_1_FPWM_MP_0_2,
<------><------><------>  LP87565_BUCK_CTRL_1_EN |
<------><------><------>  LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
<------><------><------>  buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
};
 
static int lp87565_regulator_probe(struct platform_device *pdev)
{
<------>struct lp87565 *lp87565 = dev_get_drvdata(pdev->dev.parent);
<------>struct regulator_config config = { };
<------>struct regulator_dev *rdev;
<------>int i, min_idx, max_idx;
 
<------>platform_set_drvdata(pdev, lp87565);
 
<------>config.dev = &pdev->dev;
<------>config.dev->of_node = lp87565->dev->of_node;
<------>config.driver_data = lp87565;
<------>config.regmap = lp87565->regmap;
 
<------>switch (lp87565->dev_type) {
<------>case LP87565_DEVICE_TYPE_LP87565_Q1:
<------><------>min_idx = LP87565_BUCK_10;
<------><------>max_idx = LP87565_BUCK_23;
<------><------>break;
<------>case LP87565_DEVICE_TYPE_LP87561_Q1:
<------><------>min_idx = LP87565_BUCK_3210;
<------><------>max_idx = LP87565_BUCK_3210;
<------><------>break;
<------>default:
<------><------>min_idx = LP87565_BUCK_0;
<------><------>max_idx = LP87565_BUCK_3;
<------><------>break;
<------>}
 
<------>for (i = min_idx; i <= max_idx; i++) {
<------><------>rdev = devm_regulator_register(&pdev->dev, &regulators[i].desc,
<------><------><------><------><------>       &config);
<------><------>if (IS_ERR(rdev)) {
<------><------><------>dev_err(lp87565->dev, "failed to register %s regulator\n",
<------><------><------><------>pdev->name);
<------><------><------>return PTR_ERR(rdev);
<------><------>}
<------>}
 
<------>return 0;
}
 
static const struct platform_device_id lp87565_regulator_id_table[] = {
<------>{ "lp87565-regulator", },
<------>{ "lp87565-q1-regulator", },
<------>{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, lp87565_regulator_id_table);
 
static struct platform_driver lp87565_regulator_driver = {
<------>.driver = {
<------><------>.name = "lp87565-pmic",
<------>},
<------>.probe = lp87565_regulator_probe,
<------>.id_table = lp87565_regulator_id_table,
};
module_platform_driver(lp87565_regulator_driver);
 
MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
MODULE_DESCRIPTION("LP87565 voltage regulator driver");
MODULE_LICENSE("GPL v2");