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