projects / thirdparty / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| caab277b | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| b029ffaf H |
2 | /* |
| 3 | * Implements I2C interface for VTI CMA300_D0x Accelerometer driver | |
| 4 | * | |
| 5 | * Copyright (C) 2010 Texas Instruments | |
| 6 | * Author: Hemanth V <hemanthv@ti.com> | |
| b029ffaf H |
7 | */ |
| 8 | ||
| 9 | #include <linux/module.h> | |
| 10 | #include <linux/i2c.h> | |
| 11 | #include <linux/input/cma3000.h> | |
| 12 | #include "cma3000_d0x.h" | |
| 13 | ||
| 14 | static int cma3000_i2c_set(struct device *dev, | |
| 15 | u8 reg, u8 val, char *msg) | |
| 16 | { | |
| 17 | struct i2c_client *client = to_i2c_client(dev); | |
| 18 | int ret; | |
| 19 | ||
| 20 | ret = i2c_smbus_write_byte_data(client, reg, val); | |
| 21 | if (ret < 0) | |
| 22 | dev_err(&client->dev, | |
| 23 | "%s failed (%s, %d)\n", __func__, msg, ret); | |
| 24 | return ret; | |
| 25 | } | |
| 26 | ||
| 27 | static int cma3000_i2c_read(struct device *dev, u8 reg, char *msg) | |
| 28 | { | |
| 29 | struct i2c_client *client = to_i2c_client(dev); | |
| 30 | int ret; | |
| 31 | ||
| 32 | ret = i2c_smbus_read_byte_data(client, reg); | |
| 33 | if (ret < 0) | |
| 34 | dev_err(&client->dev, | |
| 35 | "%s failed (%s, %d)\n", __func__, msg, ret); | |
| 36 | return ret; | |
| 37 | } | |
| 38 | ||
| 39 | static const struct cma3000_bus_ops cma3000_i2c_bops = { | |
| 40 | .bustype = BUS_I2C, | |
| 41 | #define CMA3000_BUSI2C (0 << 4) | |
| 42 | .ctrl_mod = CMA3000_BUSI2C, | |
| 43 | .read = cma3000_i2c_read, | |
| 44 | .write = cma3000_i2c_set, | |
| 45 | }; | |
| 46 | ||
| 5298cc4c | 47 | static int cma3000_i2c_probe(struct i2c_client *client, |
| b029ffaf H |
48 | const struct i2c_device_id *id) |
| 49 | { | |
| 50 | struct cma3000_accl_data *data; | |
| 51 | ||
| 52 | data = cma3000_init(&client->dev, client->irq, &cma3000_i2c_bops); | |
| 53 | if (IS_ERR(data)) | |
| 54 | return PTR_ERR(data); | |
| 55 | ||
| 56 | i2c_set_clientdata(client, data); | |
| 57 | ||
| 58 | return 0; | |
| 59 | } | |
| 60 | ||
| e2619cf7 | 61 | static int cma3000_i2c_remove(struct i2c_client *client) |
| b029ffaf H |
62 | { |
| 63 | struct cma3000_accl_data *data = i2c_get_clientdata(client); | |
| 64 | ||
| 65 | cma3000_exit(data); | |
| 66 | ||
| 67 | return 0; | |
| 68 | } | |
| 69 | ||
| 70 | #ifdef CONFIG_PM | |
| 71 | static int cma3000_i2c_suspend(struct device *dev) | |
| 72 | { | |
| 73 | struct i2c_client *client = to_i2c_client(dev); | |
| 74 | struct cma3000_accl_data *data = i2c_get_clientdata(client); | |
| 75 | ||
| 76 | cma3000_suspend(data); | |
| 77 | ||
| 78 | return 0; | |
| 79 | } | |
| 80 | ||
| 81 | static int cma3000_i2c_resume(struct device *dev) | |
| 82 | { | |
| 83 | struct i2c_client *client = to_i2c_client(dev); | |
| 84 | struct cma3000_accl_data *data = i2c_get_clientdata(client); | |
| 85 | ||
| 86 | cma3000_resume(data); | |
| 87 | ||
| 88 | return 0; | |
| 89 | } | |
| 90 | ||
| 91 | static const struct dev_pm_ops cma3000_i2c_pm_ops = { | |
| 92 | .suspend = cma3000_i2c_suspend, | |
| 93 | .resume = cma3000_i2c_resume, | |
| 94 | }; | |
| 95 | #endif | |
| 96 | ||
| 97 | static const struct i2c_device_id cma3000_i2c_id[] = { | |
| 98 | { "cma3000_d01", 0 }, | |
| 99 | { }, | |
| 100 | }; | |
| 101 | ||
| 356c6f65 DT |
102 | MODULE_DEVICE_TABLE(i2c, cma3000_i2c_id); |
| 103 | ||
| b029ffaf H |
104 | static struct i2c_driver cma3000_i2c_driver = { |
| 105 | .probe = cma3000_i2c_probe, | |
| 1cb0aa88 | 106 | .remove = cma3000_i2c_remove, |
| b029ffaf H |
107 | .id_table = cma3000_i2c_id, |
| 108 | .driver = { | |
| 109 | .name = "cma3000_i2c_accl", | |
| b029ffaf H |
110 | #ifdef CONFIG_PM |
| 111 | .pm = &cma3000_i2c_pm_ops, | |
| 112 | #endif | |
| 113 | }, | |
| 114 | }; | |
| 115 | ||
| 1b92c1cf | 116 | module_i2c_driver(cma3000_i2c_driver); |
| b029ffaf H |
117 | |
| 118 | MODULE_DESCRIPTION("CMA3000-D0x Accelerometer I2C Driver"); | |
| 119 | MODULE_LICENSE("GPL"); | |
| 120 | MODULE_AUTHOR("Hemanth V <hemanthv@ti.com>"); |