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// SPDX-License-Identifier: GPL-2.0
/*
* Microchip KSZ9477 series register access through I2C
*
* Copyright (C) 2018-2019 Microchip Technology Inc.
*/
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include "ksz_common.h"
KSZ_REGMAP_TABLE(ksz9477, not_used, 16, 0, 0);
static int ksz9477_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *i2c_id)
{
struct regmap_config rc;
struct ksz_device *dev;
int i, ret;
dev = ksz_switch_alloc(&i2c->dev, i2c);
if (!dev)
return -ENOMEM;
for (i = 0; i < ARRAY_SIZE(ksz9477_regmap_config); i++) {
rc = ksz9477_regmap_config[i];
rc.lock_arg = &dev->regmap_mutex;
dev->regmap[i] = devm_regmap_init_i2c(i2c, &rc);
if (IS_ERR(dev->regmap[i])) {
ret = PTR_ERR(dev->regmap[i]);
dev_err(&i2c->dev,
"Failed to initialize regmap%i: %d\n",
ksz9477_regmap_config[i].val_bits, ret);
return ret;
}
}
if (i2c->dev.platform_data)
dev->pdata = i2c->dev.platform_data;
ret = ksz_switch_register(dev);
/* Main DSA driver may not be started yet. */
if (ret)
return ret;
i2c_set_clientdata(i2c, dev);
return 0;
}
static int ksz9477_i2c_remove(struct i2c_client *i2c)
{
struct ksz_device *dev = i2c_get_clientdata(i2c);
if (dev)
ksz_switch_remove(dev);
return 0;
}
static void ksz9477_i2c_shutdown(struct i2c_client *i2c)
{
struct ksz_device *dev = i2c_get_clientdata(i2c);
if (!dev)
return;
if (dev->dev_ops->reset)
dev->dev_ops->reset(dev);
dsa_switch_shutdown(dev->ds);
i2c_set_clientdata(i2c, NULL);
}
static const struct i2c_device_id ksz9477_i2c_id[] = {
{ "ksz9477-switch", 0 },
{},
};
MODULE_DEVICE_TABLE(i2c, ksz9477_i2c_id);
static const struct of_device_id ksz9477_dt_ids[] = {
{
.compatible = "microchip,ksz9477",
.data = &ksz_switch_chips[KSZ9477]
},
{
.compatible = "microchip,ksz9896",
.data = &ksz_switch_chips[KSZ9896]
},
{
.compatible = "microchip,ksz9897",
.data = &ksz_switch_chips[KSZ9897]
},
{
.compatible = "microchip,ksz9893",
.data = &ksz_switch_chips[KSZ9893]
},
{
.compatible = "microchip,ksz9563",
.data = &ksz_switch_chips[KSZ9893]
},
{
.compatible = "microchip,ksz8563",
.data = &ksz_switch_chips[KSZ9893]
},
{
.compatible = "microchip,ksz9567",
.data = &ksz_switch_chips[KSZ9567]
},
{},
};
MODULE_DEVICE_TABLE(of, ksz9477_dt_ids);
static struct i2c_driver ksz9477_i2c_driver = {
.driver = {
.name = "ksz9477-switch",
.of_match_table = of_match_ptr(ksz9477_dt_ids),
},
.probe = ksz9477_i2c_probe,
.remove = ksz9477_i2c_remove,
.shutdown = ksz9477_i2c_shutdown,
.id_table = ksz9477_i2c_id,
};
module_i2c_driver(ksz9477_i2c_driver);
MODULE_AUTHOR("Tristram Ha <Tristram.Ha@microchip.com>");
MODULE_DESCRIPTION("Microchip KSZ9477 Series Switch I2C access Driver");
MODULE_LICENSE("GPL v2");
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