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 13 static 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 36 static void sc16is7xx_i2c_remove(struct i2c_client *client) 37 { 38 sc16is7xx_remove(&client->dev); 39 } 40 41 static 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 }; 51 MODULE_DEVICE_TABLE(i2c, sc16is7xx_i2c_id_table); 52 53 static 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 63 module_i2c_driver(sc16is7xx_i2c_driver); 64 65 MODULE_LICENSE("GPL"); 66 MODULE_DESCRIPTION("SC16IS7xx I2C interface driver"); 67 MODULE_IMPORT_NS(SERIAL_NXP_SC16IS7XX); 68