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104 lines
2.3 KiB
104 lines
2.3 KiB
// 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) 2018-2019 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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const struct i2c_device_id *i2c_id) |
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{ |
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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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dev = ksz_switch_alloc(&i2c->dev, i2c); |
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if (!dev) |
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return -ENOMEM; |
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for (i = 0; i < ARRAY_SIZE(ksz9477_regmap_config); 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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ret = PTR_ERR(dev->regmap[i]); |
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dev_err(&i2c->dev, |
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"Failed to initialize regmap%i: %d\n", |
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ksz9477_regmap_config[i].val_bits, ret); |
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return ret; |
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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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ret = ksz9477_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 int 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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ksz_switch_remove(dev); |
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return 0; |
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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 && dev->dev_ops->shutdown) |
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dev->dev_ops->shutdown(dev); |
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} |
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static const struct i2c_device_id ksz9477_i2c_id[] = { |
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{ "ksz9477-switch", 0 }, |
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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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{ .compatible = "microchip,ksz9477" }, |
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{ .compatible = "microchip,ksz9897" }, |
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{ .compatible = "microchip,ksz9893" }, |
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{ .compatible = "microchip,ksz9563" }, |
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{ .compatible = "microchip,ksz9567" }, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(of, ksz9477_dt_ids); |
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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 = of_match_ptr(ksz9477_dt_ids), |
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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 <[email protected]>"); |
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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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