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![Jean Delvare](/assets/img/avatar_default.png)
Since commit 0166dc11be
("of: make CONFIG_OF user selectable"), it
is possible to test-build any driver which depends on OF on any
architecture by explicitly selecting OF. Therefore depending on
COMPILE_TEST as an alternative is no longer needed.
It is actually better to always build such drivers with OF enabled,
so that the test builds are closer to how each driver will actually be
built on its intended target. Building them without OF may not test
much as the compiler will optimize out potentially large parts of the
code. In the worst case, this could even pop false positive warnings.
Dropping COMPILE_TEST here improves the quality of our testing and
avoids wasting time on non-existent issues.
As a minor optimization, this also lets us drop several occurrences of
of_match_ptr(), __maybe_unused and some ifdef guarding, as we now know
what all of this will resolve to, we might as well save cpp some work.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Icenowy Zheng <icenowy@aosc.io>
Link: https://lore.kernel.org/r/20221124144708.64371b98@endymion.delvare
Signed-off-by: Mark Brown <broonie@kernel.org>
184 lines
4.8 KiB
C
184 lines
4.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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enum fan53880_regulator_ids {
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FAN53880_LDO1,
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FAN53880_LDO2,
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FAN53880_LDO3,
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FAN53880_LDO4,
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FAN53880_BUCK,
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FAN53880_BOOST,
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};
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enum fan53880_registers {
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FAN53880_PRODUCT_ID = 0x00,
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FAN53880_SILICON_REV,
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FAN53880_BUCKVOUT,
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FAN53880_BOOSTVOUT,
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FAN53880_LDO1VOUT,
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FAN53880_LDO2VOUT,
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FAN53880_LDO3VOUT,
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FAN53880_LDO4VOUT,
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FAN53880_IOUT,
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FAN53880_ENABLE,
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FAN53880_ENABLE_BOOST,
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};
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#define FAN53880_ID 0x01
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static const struct regulator_ops fan53880_ops = {
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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};
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#define FAN53880_LDO(_num, _supply, _default) \
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[FAN53880_LDO ## _num] = { \
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.name = "LDO"#_num, \
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.of_match = "LDO"#_num, \
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.regulators_node = "regulators", \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.linear_ranges = (struct linear_range[]) { \
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REGULATOR_LINEAR_RANGE(_default, 0x0, 0x0, 0), \
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REGULATOR_LINEAR_RANGE(800000, 0xf, 0x73, 25000), \
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}, \
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.n_linear_ranges = 2, \
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.n_voltages = 0x74, \
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.vsel_reg = FAN53880_LDO ## _num ## VOUT, \
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.vsel_mask = 0x7f, \
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.enable_reg = FAN53880_ENABLE, \
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.enable_mask = BIT(_num - 1), \
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.enable_time = 150, \
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.supply_name = _supply, \
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.ops = &fan53880_ops, \
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}
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static const struct regulator_desc fan53880_regulators[] = {
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FAN53880_LDO(1, "VIN12", 2800000),
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FAN53880_LDO(2, "VIN12", 2800000),
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FAN53880_LDO(3, "VIN3", 1800000),
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FAN53880_LDO(4, "VIN4", 1800000),
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[FAN53880_BUCK] = {
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.name = "BUCK",
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.of_match = "BUCK",
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.regulators_node = "regulators",
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.linear_ranges = (struct linear_range[]) {
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REGULATOR_LINEAR_RANGE(1100000, 0x0, 0x0, 0),
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REGULATOR_LINEAR_RANGE(600000, 0x1f, 0xf7, 12500),
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},
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.n_linear_ranges = 2,
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.n_voltages = 0xf8,
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.vsel_reg = FAN53880_BUCKVOUT,
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.vsel_mask = 0xff,
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.enable_reg = FAN53880_ENABLE,
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.enable_mask = 0x10,
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.enable_time = 480,
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.supply_name = "PVIN",
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.ops = &fan53880_ops,
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},
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[FAN53880_BOOST] = {
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.name = "BOOST",
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.of_match = "BOOST",
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.regulators_node = "regulators",
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.linear_ranges = (struct linear_range[]) {
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REGULATOR_LINEAR_RANGE(5000000, 0x0, 0x0, 0),
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REGULATOR_LINEAR_RANGE(3000000, 0x4, 0x70, 25000),
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},
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.n_linear_ranges = 2,
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.n_voltages = 0x71,
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.vsel_reg = FAN53880_BOOSTVOUT,
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.vsel_mask = 0x7f,
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.enable_reg = FAN53880_ENABLE_BOOST,
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.enable_mask = 0xff,
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.enable_time = 580,
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.supply_name = "PVIN",
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.ops = &fan53880_ops,
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},
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};
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static const struct regmap_config fan53880_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = FAN53880_ENABLE_BOOST,
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};
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static int fan53880_i2c_probe(struct i2c_client *i2c)
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{
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struct regulator_config config = { };
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struct regulator_dev *rdev;
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struct regmap *regmap;
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int i, ret;
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unsigned int data;
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regmap = devm_regmap_init_i2c(i2c, &fan53880_regmap);
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if (IS_ERR(regmap)) {
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ret = PTR_ERR(regmap);
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dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
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return ret;
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}
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ret = regmap_read(regmap, FAN53880_PRODUCT_ID, &data);
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if (ret < 0) {
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dev_err(&i2c->dev, "Failed to read PRODUCT_ID: %d\n", ret);
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return ret;
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}
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if (data != FAN53880_ID) {
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dev_err(&i2c->dev, "Unsupported device id: 0x%x.\n", data);
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return -ENODEV;
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}
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config.dev = &i2c->dev;
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config.init_data = NULL;
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for (i = 0; i < ARRAY_SIZE(fan53880_regulators); i++) {
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rdev = devm_regulator_register(&i2c->dev,
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&fan53880_regulators[i],
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&config);
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if (IS_ERR(rdev)) {
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ret = PTR_ERR(rdev);
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dev_err(&i2c->dev, "Failed to register %s: %d\n",
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fan53880_regulators[i].name, ret);
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return ret;
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}
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}
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return 0;
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}
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static const struct of_device_id fan53880_dt_ids[] = {
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{ .compatible = "onnn,fan53880", },
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{}
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};
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MODULE_DEVICE_TABLE(of, fan53880_dt_ids);
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static const struct i2c_device_id fan53880_i2c_id[] = {
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{ "fan53880", },
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{}
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};
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MODULE_DEVICE_TABLE(i2c, fan53880_i2c_id);
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static struct i2c_driver fan53880_regulator_driver = {
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.driver = {
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.name = "fan53880",
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.of_match_table = fan53880_dt_ids,
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},
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.probe_new = fan53880_i2c_probe,
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.id_table = fan53880_i2c_id,
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};
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module_i2c_driver(fan53880_regulator_driver);
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MODULE_DESCRIPTION("FAN53880 PMIC voltage regulator driver");
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MODULE_AUTHOR("Christoph Fritz <chf.fritz@googlemail.com>");
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MODULE_LICENSE("GPL");
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