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af998e3688
While being less compact, using named initializers allows to more easily see which members of the structs are assigned which value without having to lookup the declaration of the struct. And it's also more robust against changes to the struct definition. This patch doesn't modify the compiled arrays, only their representation in source form benefits. The former was confirmed with x86 and arm64 builds. While touching these arrays, unify usage of whitespace in the list terminator. Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20260519145722.1590298-2-u.kleine-koenig@baylibre.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
150 lines
3.2 KiB
C
150 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Microchip KSZ9477 series register access through I2C
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*
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* Copyright (C) 2018-2024 Microchip Technology Inc.
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*/
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#include <linux/i2c.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include "ksz_common.h"
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KSZ_REGMAP_TABLE(ksz9477, not_used, 16, 0, 0);
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static int ksz9477_i2c_probe(struct i2c_client *i2c)
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{
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const struct ksz_chip_data *chip;
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struct device *ddev = &i2c->dev;
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struct regmap_config rc;
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struct ksz_device *dev;
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int i, ret;
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chip = device_get_match_data(ddev);
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if (!chip)
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return -EINVAL;
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dev = ksz_switch_alloc(&i2c->dev, chip, i2c);
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if (!dev)
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return -ENOMEM;
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/* Save chip id to do special initialization when probing. */
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dev->chip_id = chip->chip_id;
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for (i = 0; i < __KSZ_NUM_REGMAPS; i++) {
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rc = ksz9477_regmap_config[i];
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rc.lock_arg = &dev->regmap_mutex;
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dev->regmap[i] = devm_regmap_init_i2c(i2c, &rc);
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if (IS_ERR(dev->regmap[i])) {
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return dev_err_probe(&i2c->dev, PTR_ERR(dev->regmap[i]),
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"Failed to initialize regmap%i\n",
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ksz9477_regmap_config[i].val_bits);
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}
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}
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if (i2c->dev.platform_data)
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dev->pdata = i2c->dev.platform_data;
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dev->irq = i2c->irq;
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ret = ksz_switch_register(dev);
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/* Main DSA driver may not be started yet. */
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if (ret)
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return ret;
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i2c_set_clientdata(i2c, dev);
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return 0;
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}
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static void ksz9477_i2c_remove(struct i2c_client *i2c)
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{
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struct ksz_device *dev = i2c_get_clientdata(i2c);
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if (dev)
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ksz_switch_remove(dev);
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}
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static void ksz9477_i2c_shutdown(struct i2c_client *i2c)
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{
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struct ksz_device *dev = i2c_get_clientdata(i2c);
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if (!dev)
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return;
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ksz_switch_shutdown(dev);
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i2c_set_clientdata(i2c, NULL);
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}
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static const struct i2c_device_id ksz9477_i2c_id[] = {
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{ .name = "ksz9477-switch" },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, ksz9477_i2c_id);
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static const struct of_device_id ksz9477_dt_ids[] = {
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{
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.compatible = "microchip,ksz9477",
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.data = &ksz_switch_chips[KSZ9477]
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},
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{
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.compatible = "microchip,ksz9896",
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.data = &ksz_switch_chips[KSZ9896]
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},
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{
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.compatible = "microchip,ksz9897",
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.data = &ksz_switch_chips[KSZ9897]
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},
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{
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.compatible = "microchip,ksz9893",
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.data = &ksz_switch_chips[KSZ9893]
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},
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{
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.compatible = "microchip,ksz9563",
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.data = &ksz_switch_chips[KSZ9563]
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},
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{
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.compatible = "microchip,ksz8563",
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.data = &ksz_switch_chips[KSZ8563]
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},
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{
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.compatible = "microchip,ksz8567",
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.data = &ksz_switch_chips[KSZ8567]
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},
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{
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.compatible = "microchip,ksz9567",
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.data = &ksz_switch_chips[KSZ9567]
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},
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{
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.compatible = "microchip,lan9646",
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.data = &ksz_switch_chips[LAN9646]
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},
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{},
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};
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MODULE_DEVICE_TABLE(of, ksz9477_dt_ids);
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static DEFINE_SIMPLE_DEV_PM_OPS(ksz_i2c_pm_ops,
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ksz_switch_suspend, ksz_switch_resume);
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static struct i2c_driver ksz9477_i2c_driver = {
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.driver = {
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.name = "ksz9477-switch",
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.of_match_table = ksz9477_dt_ids,
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.pm = &ksz_i2c_pm_ops,
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},
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.probe = ksz9477_i2c_probe,
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.remove = ksz9477_i2c_remove,
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.shutdown = ksz9477_i2c_shutdown,
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.id_table = ksz9477_i2c_id,
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};
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module_i2c_driver(ksz9477_i2c_driver);
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MODULE_AUTHOR("Tristram Ha <Tristram.Ha@microchip.com>");
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MODULE_DESCRIPTION("Microchip KSZ9477 Series Switch I2C access Driver");
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MODULE_LICENSE("GPL v2");
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