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| 2 | |
| 3 | * MP2629 parent driver for ADC and battery charger
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| 4 | *
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| 5 | * Copyright 2020 Monolithic Power Systems, Inc
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| 6 | *
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| 7 | * Author: Saravanan Sekar <[email protected]>
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| 8 |
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| 9 |
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| 10 | #include <linux/i2c.h>
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| 11 | #include <linux/kernel.h>
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| 12 | #include <linux/mfd/core.h>
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| 13 | #include <linux/mfd/mp2629.h>
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| 14 | #include <linux/module.h>
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| 15 | #include <linux/platform_device.h>
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| 16 | #include <linux/regmap.h>
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| 17 | #include <linux/slab.h>
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| 18 |
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| 19 | static const struct mfd_cell mp2629_cell[] = {
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| 20 | {
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| 21 | .name = "mp2629_adc",
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| 22 | .of_compatible = "mps,mp2629_adc",
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| 23 | },
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| 24 | {
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| 25 | .name = "mp2629_charger",
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| 26 | .of_compatible = "mps,mp2629_charger",
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| 27 | }
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| 28 | };
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| 29 |
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| 30 | static const struct regmap_config mp2629_regmap_config = {
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| 31 | .reg_bits = 8,
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| 32 | .val_bits = 8,
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| 33 | .max_register = 0x17,
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| 34 | };
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| 35 |
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| 36 | static int mp2629_probe(struct i2c_client *client)
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| 37 | {
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| 38 | struct mp2629_data *ddata;
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| 39 | int ret;
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| 40 |
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| 41 | ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL);
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| 42 | if (!ddata)
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| 43 | return -ENOMEM;
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| 44 |
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| 45 | ddata->dev = &client->dev;
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| 46 | i2c_set_clientdata(client, ddata);
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| 47 |
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| 48 | ddata->regmap = devm_regmap_init_i2c(client, &mp2629_regmap_config);
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| 49 | if (IS_ERR(ddata->regmap)) {
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| 50 | dev_err(ddata->dev, "Failed to allocate regmap\n");
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| 51 | return PTR_ERR(ddata->regmap);
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| 52 | }
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| 53 |
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| 54 | ret = devm_mfd_add_devices(ddata->dev, PLATFORM_DEVID_AUTO, mp2629_cell,
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| 55 | ARRAY_SIZE(mp2629_cell), NULL, 0, NULL);
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| 56 | if (ret)
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| 57 | dev_err(ddata->dev, "Failed to register sub-devices %d\n", ret);
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| 58 |
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| 59 | return ret;
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| 60 | }
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| 61 |
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| 62 | static const struct of_device_id mp2629_of_match[] = {
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| 63 | { .compatible = "mps,mp2629"},
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| 64 | { }
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| 65 | };
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| 66 | MODULE_DEVICE_TABLE(of, mp2629_of_match);
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| 67 |
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| 68 | static struct i2c_driver mp2629_driver = {
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| 69 | .driver = {
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| 70 | .name = "mp2629",
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| 71 | .of_match_table = mp2629_of_match,
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| 72 | },
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| 73 | .probe = mp2629_probe,
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| 74 | };
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| 75 | module_i2c_driver(mp2629_driver);
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| 76 |
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| 77 | MODULE_AUTHOR("Saravanan Sekar <[email protected]>");
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| 78 | MODULE_DESCRIPTION("MP2629 Battery charger parent driver");
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| 79 | MODULE_LICENSE("GPL");
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