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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(i2c);21 if (!devtype)22 return dev_err_probe(&i2c->dev, -ENODEV, "Failed to match device\n");23 24 memcpy(®cfg, &sc16is7xx_regcfg, sizeof(struct regmap_config));25 26 for (i = 0; i < devtype->nr_uart; i++) {27 regcfg.name = sc16is7xx_regmap_name(i);28 regcfg.read_flag_mask = sc16is7xx_regmap_port_mask(i);29 regcfg.write_flag_mask = sc16is7xx_regmap_port_mask(i);30 regmaps[i] = devm_regmap_init_i2c(i2c, ®cfg);31 }32 33 return sc16is7xx_probe(&i2c->dev, devtype, regmaps, i2c->irq);34}35 36static void sc16is7xx_i2c_remove(struct i2c_client *client)37{38 sc16is7xx_remove(&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