Alexander Monakov | a265b03 | 2018-03-09 01:53:03 +0300 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | #include <linux/module.h> |
| 3 | #include <linux/i2c.h> |
| 4 | #include <linux/of.h> |
| 5 | #include <linux/regulator/driver.h> |
| 6 | #include <linux/regmap.h> |
| 7 | |
| 8 | static const struct regulator_ops pg86x_ops = { |
| 9 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 10 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 11 | .list_voltage = regulator_list_voltage_linear_range, |
| 12 | }; |
| 13 | |
Matti Vaittinen | 60ab7f4 | 2020-05-08 18:43:36 +0300 | [diff] [blame] | 14 | static const struct linear_range pg86x_buck1_ranges[] = { |
Alexander Monakov | a265b03 | 2018-03-09 01:53:03 +0300 | [diff] [blame] | 15 | REGULATOR_LINEAR_RANGE( 0, 0, 10, 0), |
| 16 | REGULATOR_LINEAR_RANGE(1000000, 11, 34, 25000), |
| 17 | REGULATOR_LINEAR_RANGE(1600000, 35, 47, 50000), |
| 18 | }; |
| 19 | |
Matti Vaittinen | 60ab7f4 | 2020-05-08 18:43:36 +0300 | [diff] [blame] | 20 | static const struct linear_range pg86x_buck2_ranges[] = { |
Alexander Monakov | a265b03 | 2018-03-09 01:53:03 +0300 | [diff] [blame] | 21 | REGULATOR_LINEAR_RANGE( 0, 0, 15, 0), |
| 22 | REGULATOR_LINEAR_RANGE(1000000, 16, 39, 25000), |
| 23 | REGULATOR_LINEAR_RANGE(1600000, 40, 52, 50000), |
| 24 | }; |
| 25 | |
| 26 | static const struct regulator_desc pg86x_regulators[] = { |
| 27 | { |
| 28 | .id = 0, |
| 29 | .type = REGULATOR_VOLTAGE, |
| 30 | .name = "buck1", |
| 31 | .of_match = of_match_ptr("buck1"), |
| 32 | .n_voltages = 11 + 24 + 13, |
| 33 | .linear_ranges = pg86x_buck1_ranges, |
| 34 | .n_linear_ranges = 3, |
| 35 | .vsel_reg = 0x24, |
| 36 | .vsel_mask = 0xff, |
| 37 | .ops = &pg86x_ops, |
| 38 | .owner = THIS_MODULE |
| 39 | }, |
| 40 | { |
| 41 | .id = 1, |
| 42 | .type = REGULATOR_VOLTAGE, |
| 43 | .name = "buck2", |
| 44 | .of_match = of_match_ptr("buck2"), |
| 45 | .n_voltages = 16 + 24 + 13, |
| 46 | .linear_ranges = pg86x_buck2_ranges, |
| 47 | .n_linear_ranges = 3, |
| 48 | .vsel_reg = 0x13, |
| 49 | .vsel_mask = 0xff, |
| 50 | .ops = &pg86x_ops, |
| 51 | .owner = THIS_MODULE |
| 52 | }, |
| 53 | }; |
| 54 | |
| 55 | static const struct regmap_config pg86x_regmap = { |
| 56 | .reg_bits = 8, |
| 57 | .val_bits = 8, |
| 58 | }; |
| 59 | |
| 60 | static int pg86x_i2c_probe(struct i2c_client *i2c) |
| 61 | { |
| 62 | int id, ret; |
| 63 | struct regulator_config config = {.dev = &i2c->dev}; |
| 64 | struct regmap *regmap = devm_regmap_init_i2c(i2c, &pg86x_regmap); |
| 65 | |
| 66 | if (IS_ERR(regmap)) { |
| 67 | ret = PTR_ERR(regmap); |
| 68 | dev_err(&i2c->dev, "regmap init failed: %d\n", ret); |
| 69 | return ret; |
| 70 | } |
| 71 | |
| 72 | for (id = 0; id < ARRAY_SIZE(pg86x_regulators); id++) { |
| 73 | struct regulator_dev *rdev; |
| 74 | rdev = devm_regulator_register(&i2c->dev, |
| 75 | &pg86x_regulators[id], |
| 76 | &config); |
| 77 | if (IS_ERR(rdev)) { |
| 78 | ret = PTR_ERR(rdev); |
| 79 | dev_err(&i2c->dev, "failed to register %s: %d\n", |
| 80 | pg86x_regulators[id].name, ret); |
| 81 | return ret; |
| 82 | } |
| 83 | } |
| 84 | return 0; |
| 85 | } |
| 86 | |
Jisheng Zhang | e11e068 | 2020-08-21 11:12:10 +0800 | [diff] [blame] | 87 | static const struct of_device_id __maybe_unused pg86x_dt_ids[] = { |
Alexander Monakov | a265b03 | 2018-03-09 01:53:03 +0300 | [diff] [blame] | 88 | { .compatible = "marvell,88pg867" }, |
| 89 | { .compatible = "marvell,88pg868" }, |
| 90 | { } |
| 91 | }; |
| 92 | MODULE_DEVICE_TABLE(of, pg86x_dt_ids); |
| 93 | |
| 94 | static const struct i2c_device_id pg86x_i2c_id[] = { |
| 95 | { "88pg867", }, |
| 96 | { "88pg868", }, |
| 97 | { } |
| 98 | }; |
| 99 | MODULE_DEVICE_TABLE(i2c, pg86x_i2c_id); |
| 100 | |
| 101 | static struct i2c_driver pg86x_regulator_driver = { |
| 102 | .driver = { |
| 103 | .name = "88pg86x", |
Douglas Anderson | ed6962c | 2023-03-16 12:54:39 -0700 | [diff] [blame] | 104 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
Alexander Monakov | a265b03 | 2018-03-09 01:53:03 +0300 | [diff] [blame] | 105 | .of_match_table = of_match_ptr(pg86x_dt_ids), |
| 106 | }, |
Uwe Kleine-König | 964e186 | 2023-05-06 00:02:18 +0200 | [diff] [blame] | 107 | .probe = pg86x_i2c_probe, |
Alexander Monakov | a265b03 | 2018-03-09 01:53:03 +0300 | [diff] [blame] | 108 | .id_table = pg86x_i2c_id, |
| 109 | }; |
| 110 | |
| 111 | module_i2c_driver(pg86x_regulator_driver); |
| 112 | |
| 113 | MODULE_DESCRIPTION("Marvell 88PG86X voltage regulator"); |
| 114 | MODULE_AUTHOR("Alexander Monakov <amonakov@gmail.com>"); |
| 115 | MODULE_LICENSE("GPL"); |