^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2017 Pengutronix, Juergen Borleis <kernel@pengutronix.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "lan9303.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) struct lan9303_i2c {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) struct i2c_client *device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) struct lan9303 chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static const struct regmap_config lan9303_i2c_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) .reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) .val_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) .reg_stride = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) .can_multi_write = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) .max_register = 0x0ff, /* address bits 0..1 are not used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) .reg_format_endian = REGMAP_ENDIAN_LITTLE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) .volatile_table = &lan9303_register_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) .wr_table = &lan9303_register_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) .rd_table = &lan9303_register_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) .cache_type = REGCACHE_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static int lan9303_i2c_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct lan9303_i2c *sw_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) sw_dev = devm_kzalloc(&client->dev, sizeof(struct lan9303_i2c),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (!sw_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) sw_dev->chip.regmap = devm_regmap_init_i2c(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) &lan9303_i2c_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) if (IS_ERR(sw_dev->chip.regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ret = PTR_ERR(sw_dev->chip.regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) dev_err(&client->dev, "Failed to allocate register map: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* link forward and backward */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) sw_dev->device = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) i2c_set_clientdata(client, sw_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) sw_dev->chip.dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) sw_dev->chip.ops = &lan9303_indirect_phy_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) ret = lan9303_probe(&sw_dev->chip, client->dev.of_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) dev_info(&client->dev, "LAN9303 I2C driver loaded successfully\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static int lan9303_i2c_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct lan9303_i2c *sw_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) sw_dev = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if (!sw_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return lan9303_remove(&sw_dev->chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /*-------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static const struct i2c_device_id lan9303_i2c_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) { "lan9303", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) MODULE_DEVICE_TABLE(i2c, lan9303_i2c_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) static const struct of_device_id lan9303_i2c_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) { .compatible = "smsc,lan9303-i2c", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) { /* sentinel */ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) MODULE_DEVICE_TABLE(of, lan9303_i2c_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static struct i2c_driver lan9303_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .name = "LAN9303_I2C",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) .of_match_table = of_match_ptr(lan9303_i2c_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) .probe = lan9303_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) .remove = lan9303_i2c_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) .id_table = lan9303_i2c_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) module_i2c_driver(lan9303_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) MODULE_AUTHOR("Juergen Borleis <kernel@pengutronix.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) MODULE_DESCRIPTION("Driver for SMSC/Microchip LAN9303 three port ethernet switch in I2C managed mode");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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