eee16b1471
This patch perform the compatibility check for the device after the chip detect is done. It is to prevent the mismatch between the device compatible specified in the device tree and actual device found during the detect. The ksz9477 device doesn't use any .data in the of_device_id. But the ksz8795_spi uses .data for assigning the regmap between 8830 family and 87xx family switch. Changed the regmap assignment based on the chip_id from the .data. Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
134 lines
2.7 KiB
C
134 lines
2.7 KiB
C
// 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 = ksz9477_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);
|
|
|
|
i2c_set_clientdata(i2c, NULL);
|
|
|
|
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->shutdown)
|
|
dev->dev_ops->shutdown(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,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");
|