From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/input/misc/cma3000_d0x_i2c.c | 132 +++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 drivers/input/misc/cma3000_d0x_i2c.c (limited to 'drivers/input/misc/cma3000_d0x_i2c.c') diff --git a/drivers/input/misc/cma3000_d0x_i2c.c b/drivers/input/misc/cma3000_d0x_i2c.c new file mode 100644 index 000000000..4fdef98ce --- /dev/null +++ b/drivers/input/misc/cma3000_d0x_i2c.c @@ -0,0 +1,132 @@ +/* + * Implements I2C interface for VTI CMA300_D0x Accelerometer driver + * + * Copyright (C) 2010 Texas Instruments + * Author: Hemanth V + * + * 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 . + */ + +#include +#include +#include +#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 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 "); -- cgit v1.2.3-54-g00ecf