99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
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/*
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* Based on the TPS65218 driver and the previous TPS65912 driver
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*/
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#include <linux/acpi.h>
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/mfd/pmu-ext.h>
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#include <linux/of.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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static const struct of_device_id pmu_ext_i2c_of_match_table[] = {
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{ .compatible = "ext,tcs4838", .data = (void *)TCS4838_ID },
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{ .compatible = "ext,sy8827g", .data = (void *)SY8827G_ID },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, pmu_ext_i2c_of_match_table);
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static int pmu_ext_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *ids)
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{
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struct pmu_ext_dev *ext;
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int ret;
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ext = devm_kzalloc(&client->dev, sizeof(*ext), GFP_KERNEL);
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if (!ext)
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return -ENOMEM;
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ext->dev = &client->dev;
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dev_set_drvdata(ext->dev, ext);
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ret = pmu_ext_match_device(ext);
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if (ret)
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return ret;
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ext->regmap = devm_regmap_init_i2c(client, ext->regmap_cfg);
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if (IS_ERR(ext->regmap)) {
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dev_err(ext->dev, "Failed to initialize register map\n");
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return PTR_ERR(ext->regmap);
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}
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return pmu_ext_device_init(ext);
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}
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static int pmu_ext_i2c_remove(struct i2c_client *client)
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{
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struct pmu_ext_dev *ext = i2c_get_clientdata(client);
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return pmu_ext_device_exit(ext);
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}
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static const struct i2c_device_id pmu_ext_i2c_id_table[] = {
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(i2c, pmu_ext_i2c_id_table);
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static const struct acpi_device_id pmu_ext_i2c_acpi_match[] = {
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{ },
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};
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MODULE_DEVICE_TABLE(acpi, pmu_ext_i2c_acpi_match);
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static struct i2c_driver pmu_ext_i2c_driver = {
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.driver = {
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.name = "pmu-ext-i2c",
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.of_match_table = of_match_ptr(pmu_ext_i2c_of_match_table),
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.acpi_match_table = ACPI_PTR(pmu_ext_i2c_acpi_match),
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},
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.probe = pmu_ext_i2c_probe,
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.remove = pmu_ext_i2c_remove,
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.id_table = pmu_ext_i2c_id_table,
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};
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static int __init pmu_ext_i2c_init(void)
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{
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int ret;
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ret = i2c_add_driver(&pmu_ext_i2c_driver);
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if (ret != 0) {
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pr_err("pmu_ext i2c registration failed %d\n", ret);
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return ret;
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}
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return 0;
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}
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subsys_initcall(pmu_ext_i2c_init);
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static void __exit pmu_ext_i2c_exit(void)
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{
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i2c_del_driver(&pmu_ext_i2c_driver);
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}
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module_exit(pmu_ext_i2c_exit);
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MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
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MODULE_DESCRIPTION("pmu_ext I2C Interface Driver");
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MODULE_LICENSE("GPL v2");
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