1// SPDX-License-Identifier: GPL-2.0+
2/* SC16IS7xx I2C interface driver */
3
4#include <linux/dev_printk.h>
5#include <linux/i2c.h>
6#include <linux/mod_devicetable.h>
7#include <linux/module.h>
8#include <linux/regmap.h>
9#include <linux/string.h>
10
11#include "sc16is7xx.h"
12
13static int sc16is7xx_i2c_probe(struct i2c_client *i2c)
14{
15 const struct sc16is7xx_devtype *devtype;
16 struct regmap *regmaps[SC16IS7XX_MAX_PORTS];
17 struct regmap_config regcfg;
18 unsigned int i;
19
20 devtype = i2c_get_match_data(client: i2c);
21 if (!devtype)
22 return dev_err_probe(dev: &i2c->dev, err: -ENODEV, fmt: "Failed to match device\n");
23
24 memcpy(&regcfg, &sc16is7xx_regcfg, sizeof(struct regmap_config));
25
26 for (i = 0; i < devtype->nr_uart; i++) {
27 regcfg.name = sc16is7xx_regmap_name(port_id: i);
28 regcfg.read_flag_mask = sc16is7xx_regmap_port_mask(port_id: i);
29 regcfg.write_flag_mask = sc16is7xx_regmap_port_mask(port_id: i);
30 regmaps[i] = devm_regmap_init_i2c(i2c, &regcfg);
31 }
32
33 return sc16is7xx_probe(dev: &i2c->dev, devtype, regmaps, irq: i2c->irq);
34}
35
36static void sc16is7xx_i2c_remove(struct i2c_client *client)
37{
38 sc16is7xx_remove(dev: &client->dev);
39}
40
41static const struct i2c_device_id sc16is7xx_i2c_id_table[] = {
42 { "sc16is74x", (kernel_ulong_t)&sc16is74x_devtype, },
43 { "sc16is740", (kernel_ulong_t)&sc16is74x_devtype, },
44 { "sc16is741", (kernel_ulong_t)&sc16is74x_devtype, },
45 { "sc16is750", (kernel_ulong_t)&sc16is750_devtype, },
46 { "sc16is752", (kernel_ulong_t)&sc16is752_devtype, },
47 { "sc16is760", (kernel_ulong_t)&sc16is760_devtype, },
48 { "sc16is762", (kernel_ulong_t)&sc16is762_devtype, },
49 { }
50};
51MODULE_DEVICE_TABLE(i2c, sc16is7xx_i2c_id_table);
52
53static struct i2c_driver sc16is7xx_i2c_driver = {
54 .driver = {
55 .name = SC16IS7XX_NAME,
56 .of_match_table = sc16is7xx_dt_ids,
57 },
58 .probe = sc16is7xx_i2c_probe,
59 .remove = sc16is7xx_i2c_remove,
60 .id_table = sc16is7xx_i2c_id_table,
61};
62
63module_i2c_driver(sc16is7xx_i2c_driver);
64
65MODULE_LICENSE("GPL");
66MODULE_DESCRIPTION("SC16IS7xx I2C interface driver");
67MODULE_IMPORT_NS("SERIAL_NXP_SC16IS7XX");
68

source code of linux/drivers/tty/serial/sc16is7xx_i2c.c