// SPDX-License-Identifier: GPL-2.0-only
/*
 * Implements I2C interface for VTI CMA300_D0x Accelerometer driver
 *
 * Copyright (C) 2010 Texas Instruments
 * Author: Hemanth V <hemanthv@ti.com>
 */

#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)
{
        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 void cma3000_i2c_remove(struct i2c_client *client)
{
        struct cma3000_accl_data *data = i2c_get_clientdata(client);

        cma3000_exit(data);
}

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,
};

static const struct i2c_device_id cma3000_i2c_id[] = {
        { .name = "cma3000_d01" },
        { }
};

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",
                .pm     = pm_sleep_ptr(&cma3000_i2c_pm_ops),
        },
};

module_i2c_driver(cma3000_i2c_driver);

MODULE_DESCRIPTION("CMA3000-D0x Accelerometer I2C Driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Hemanth V <hemanthv@ti.com>");