| /* |
| * Implements I2C interface for VTI CMA300_D0x Accelerometer driver |
| * |
| * Copyright (C) 2010 Texas Instruments |
| * Author: Hemanth V <hemanthv@ti.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published by |
| * the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/i2c.h> |
| #include <linux/input/cma3000.h> |
| #include "cma3000_d0x.h" |
| |
| static int cma3000_i2c_set(struct device *dev, |
| u8 reg, u8 val, char *msg) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| int ret; |
| |
| ret = i2c_smbus_write_byte_data(client, reg, val); |
| if (ret < 0) |
| dev_err(&client->dev, |
| "%s failed (%s, %d)\n", __func__, msg, ret); |
| return ret; |
| } |
| |
| static int cma3000_i2c_read(struct device *dev, u8 reg, char *msg) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| int ret; |
| |
| ret = i2c_smbus_read_byte_data(client, reg); |
| if (ret < 0) |
| dev_err(&client->dev, |
| "%s failed (%s, %d)\n", __func__, msg, ret); |
| return ret; |
| } |
| |
| static const struct cma3000_bus_ops cma3000_i2c_bops = { |
| .bustype = BUS_I2C, |
| #define CMA3000_BUSI2C (0 << 4) |
| .ctrl_mod = CMA3000_BUSI2C, |
| .read = cma3000_i2c_read, |
| .write = cma3000_i2c_set, |
| }; |
| |
| static int cma3000_i2c_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| struct cma3000_accl_data *data; |
| |
| data = cma3000_init(&client->dev, client->irq, &cma3000_i2c_bops); |
| if (IS_ERR(data)) |
| return PTR_ERR(data); |
| |
| i2c_set_clientdata(client, data); |
| |
| return 0; |
| } |
| |
| static int __devexit cma3000_i2c_remove(struct i2c_client *client) |
| { |
| struct cma3000_accl_data *data = i2c_get_clientdata(client); |
| |
| cma3000_exit(data); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM |
| static int cma3000_i2c_suspend(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct cma3000_accl_data *data = i2c_get_clientdata(client); |
| |
| cma3000_suspend(data); |
| |
| return 0; |
| } |
| |
| static int cma3000_i2c_resume(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct cma3000_accl_data *data = i2c_get_clientdata(client); |
| |
| cma3000_resume(data); |
| |
| return 0; |
| } |
| |
| static const struct dev_pm_ops cma3000_i2c_pm_ops = { |
| .suspend = cma3000_i2c_suspend, |
| .resume = cma3000_i2c_resume, |
| }; |
| #endif |
| |
| static const struct i2c_device_id cma3000_i2c_id[] = { |
| { "cma3000_d01", 0 }, |
| { }, |
| }; |
| |
| MODULE_DEVICE_TABLE(i2c, cma3000_i2c_id); |
| |
| static struct i2c_driver cma3000_i2c_driver = { |
| .probe = cma3000_i2c_probe, |
| .remove = cma3000_i2c_remove, |
| .id_table = cma3000_i2c_id, |
| .driver = { |
| .name = "cma3000_i2c_accl", |
| .owner = THIS_MODULE, |
| #ifdef CONFIG_PM |
| .pm = &cma3000_i2c_pm_ops, |
| #endif |
| }, |
| }; |
| |
| module_i2c_driver(cma3000_i2c_driver); |
| |
| MODULE_DESCRIPTION("CMA3000-D0x Accelerometer I2C Driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Hemanth V <hemanthv@ti.com>"); |