Source of spi-sc18is602.c - linux-imx - PHYTEC BitBucket (Stash)

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 * GNU General Public License for more details.
 */
​
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/pm_runtime.h>
#include <linux/of_device.h>
#include <linux/of.h>
#include <linux/platform_data/sc18is602.h>
#include <linux/gpio/consumer.h>
​
enum chips { sc18is602, sc18is602b, sc18is603 };
​
#define SC18IS602_BUFSIZ        200
#define SC18IS602_CLOCK         7372000
​
#define SC18IS602_MODE_CPHA     BIT(2)
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    hw->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
    if (IS_ERR(hw->reset))
        return PTR_ERR(hw->reset);
    gpiod_set_value_cansleep(hw->reset, 0);
​
    hw->master = master;
    hw->client = client;
    hw->dev = dev;
    hw->ctrl = 0xff;
​
    hw->id = id->driver_data;
    if (client->dev.of_node)
        hw->id = (enum chips)of_device_get_match_data(&client->dev);
    else
        hw->id = id->driver_data;
​
    switch (hw->id) {
    case sc18is602:
    case sc18is602b:
        master->num_chipselect = 4;
        hw->freq = SC18IS602_CLOCK;
        break;
    case sc18is603:
        master->num_chipselect = 2;
        if (pdata) {
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}
​
static const struct i2c_device_id sc18is602_id[] = {
    { "sc18is602", sc18is602 },
    { "sc18is602b", sc18is602b },
    { "sc18is603", sc18is603 },
    { }
};
MODULE_DEVICE_TABLE(i2c, sc18is602_id);
​
static const struct of_device_id sc18is602_of_match[] = {
    {
        .compatible = "nxp,sc18is602",
        .data = (void *)sc18is602
    },
    {
        .compatible = "nxp,sc18is602b",
        .data = (void *)sc18is602b
    },
    {
        .compatible = "nxp,sc18is603",
        .data = (void *)sc18is603
    },
    { },
};
MODULE_DEVICE_TABLE(of, sc18is602_of_match);
​
static struct i2c_driver sc18is602_driver = {
    .driver = {
        .name = "sc18is602",
        .of_match_table = of_match_ptr(sc18is602_of_match),
    },
    .probe = sc18is602_probe,
    .id_table = sc18is602_id,
};
​
module_i2c_driver(sc18is602_driver);
​
MODULE_DESCRIPTION("SC18IC602/603 SPI Master Driver");
MODULE_AUTHOR("Guenter Roeck");
MODULE_LICENSE("GPL");