119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2017 Pengutronix, Juergen Borleis <kernel@pengutronix.de>
|
||
|
|
*/
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/i2c.h>
|
||
|
|
#include <linux/of.h>
|
||
|
|
|
||
|
|
#include "lan9303.h"
|
||
|
|
|
||
|
|
struct lan9303_i2c {
|
||
|
|
struct i2c_client *device;
|
||
|
|
struct lan9303 chip;
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct regmap_config lan9303_i2c_regmap_config = {
|
||
|
|
.reg_bits = 8,
|
||
|
|
.val_bits = 32,
|
||
|
|
.reg_stride = 1,
|
||
|
|
.can_multi_write = true,
|
||
|
|
.max_register = 0x0ff, /* address bits 0..1 are not used */
|
||
|
|
.reg_format_endian = REGMAP_ENDIAN_LITTLE,
|
||
|
|
|
||
|
|
.volatile_table = &lan9303_register_set,
|
||
|
|
.wr_table = &lan9303_register_set,
|
||
|
|
.rd_table = &lan9303_register_set,
|
||
|
|
|
||
|
|
.cache_type = REGCACHE_NONE,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int lan9303_i2c_probe(struct i2c_client *client,
|
||
|
|
const struct i2c_device_id *id)
|
||
|
|
{
|
||
|
|
struct lan9303_i2c *sw_dev;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
sw_dev = devm_kzalloc(&client->dev, sizeof(struct lan9303_i2c),
|
||
|
|
GFP_KERNEL);
|
||
|
|
if (!sw_dev)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
sw_dev->chip.regmap = devm_regmap_init_i2c(client,
|
||
|
|
&lan9303_i2c_regmap_config);
|
||
|
|
if (IS_ERR(sw_dev->chip.regmap)) {
|
||
|
|
ret = PTR_ERR(sw_dev->chip.regmap);
|
||
|
|
dev_err(&client->dev, "Failed to allocate register map: %d\n",
|
||
|
|
ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* link forward and backward */
|
||
|
|
sw_dev->device = client;
|
||
|
|
i2c_set_clientdata(client, sw_dev);
|
||
|
|
sw_dev->chip.dev = &client->dev;
|
||
|
|
|
||
|
|
sw_dev->chip.ops = &lan9303_indirect_phy_ops;
|
||
|
|
|
||
|
|
ret = lan9303_probe(&sw_dev->chip, client->dev.of_node);
|
||
|
|
if (ret != 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
dev_info(&client->dev, "LAN9303 I2C driver loaded successfully\n");
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lan9303_i2c_remove(struct i2c_client *client)
|
||
|
|
{
|
||
|
|
struct lan9303_i2c *sw_dev = i2c_get_clientdata(client);
|
||
|
|
|
||
|
|
if (!sw_dev)
|
||
|
|
return;
|
||
|
|
|
||
|
|
lan9303_remove(&sw_dev->chip);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lan9303_i2c_shutdown(struct i2c_client *client)
|
||
|
|
{
|
||
|
|
struct lan9303_i2c *sw_dev = i2c_get_clientdata(client);
|
||
|
|
|
||
|
|
if (!sw_dev)
|
||
|
|
return;
|
||
|
|
|
||
|
|
lan9303_shutdown(&sw_dev->chip);
|
||
|
|
|
||
|
|
i2c_set_clientdata(client, NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*-------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
static const struct i2c_device_id lan9303_i2c_id[] = {
|
||
|
|
{ "lan9303", 0 },
|
||
|
|
{ /* sentinel */ }
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(i2c, lan9303_i2c_id);
|
||
|
|
|
||
|
|
static const struct of_device_id lan9303_i2c_of_match[] = {
|
||
|
|
{ .compatible = "smsc,lan9303-i2c", },
|
||
|
|
{ /* sentinel */ },
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(of, lan9303_i2c_of_match);
|
||
|
|
|
||
|
|
static struct i2c_driver lan9303_i2c_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "LAN9303_I2C",
|
||
|
|
.of_match_table = of_match_ptr(lan9303_i2c_of_match),
|
||
|
|
},
|
||
|
|
.probe = lan9303_i2c_probe,
|
||
|
|
.remove = lan9303_i2c_remove,
|
||
|
|
.shutdown = lan9303_i2c_shutdown,
|
||
|
|
.id_table = lan9303_i2c_id,
|
||
|
|
};
|
||
|
|
module_i2c_driver(lan9303_i2c_driver);
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Juergen Borleis <kernel@pengutronix.de>");
|
||
|
|
MODULE_DESCRIPTION("Driver for SMSC/Microchip LAN9303 three port ethernet switch in I2C managed mode");
|
||
|
|
MODULE_LICENSE("GPL v2");
|