177 lines
4.2 KiB
C
177 lines
4.2 KiB
C
/*
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* Support for rfkill on some Fujitsu-Siemens Amilo laptops.
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* Copyright 2011 Ben Hutchings.
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*
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* Based in part on the fsam7440 driver, which is:
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* Copyright 2005 Alejandro Vidal Mata & Javier Vidal Mata.
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* and on the fsaa1655g driver, which is:
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* Copyright 2006 Martin Večeřa.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/dmi.h>
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#include <linux/i8042.h>
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#include <linux/io.h>
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#include <linux/moduleparam.h>
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#include <linux/platform_device.h>
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#include <linux/rfkill.h>
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/*
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* These values were obtained from disassembling and debugging the
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* PM.exe program installed in the Fujitsu-Siemens AMILO A1655G
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*/
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#define A1655_WIFI_COMMAND 0x10C5
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#define A1655_WIFI_ON 0x25
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#define A1655_WIFI_OFF 0x45
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static int amilo_a1655_rfkill_set_block(void *data, bool blocked)
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{
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u8 param = blocked ? A1655_WIFI_OFF : A1655_WIFI_ON;
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int rc;
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i8042_lock_chip();
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rc = i8042_command(¶m, A1655_WIFI_COMMAND);
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i8042_unlock_chip();
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return rc;
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}
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static const struct rfkill_ops amilo_a1655_rfkill_ops = {
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.set_block = amilo_a1655_rfkill_set_block
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};
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/*
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* These values were obtained from disassembling the PM.exe program
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* installed in the Fujitsu-Siemens AMILO M 7440
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*/
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#define M7440_PORT1 0x118f
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#define M7440_PORT2 0x118e
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#define M7440_RADIO_ON1 0x12
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#define M7440_RADIO_ON2 0x80
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#define M7440_RADIO_OFF1 0x10
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#define M7440_RADIO_OFF2 0x00
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static int amilo_m7440_rfkill_set_block(void *data, bool blocked)
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{
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u8 val1 = blocked ? M7440_RADIO_OFF1 : M7440_RADIO_ON1;
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u8 val2 = blocked ? M7440_RADIO_OFF2 : M7440_RADIO_ON2;
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outb(val1, M7440_PORT1);
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outb(val2, M7440_PORT2);
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/* Check whether the state has changed correctly */
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if (inb(M7440_PORT1) != val1 || inb(M7440_PORT2) != val2)
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return -EIO;
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return 0;
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}
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static const struct rfkill_ops amilo_m7440_rfkill_ops = {
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.set_block = amilo_m7440_rfkill_set_block
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};
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static const struct dmi_system_id __devinitconst amilo_rfkill_id_table[] = {
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{
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
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DMI_MATCH(DMI_BOARD_NAME, "AMILO A1655"),
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},
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.driver_data = (void *)&amilo_a1655_rfkill_ops
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},
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{
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
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DMI_MATCH(DMI_BOARD_NAME, "AMILO M7440"),
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},
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.driver_data = (void *)&amilo_m7440_rfkill_ops
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},
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{}
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};
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static struct platform_device *amilo_rfkill_pdev;
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static struct rfkill *amilo_rfkill_dev;
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static int __devinit amilo_rfkill_probe(struct platform_device *device)
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{
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int rc;
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const struct dmi_system_id *system_id =
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dmi_first_match(amilo_rfkill_id_table);
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if (!system_id)
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return -ENXIO;
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amilo_rfkill_dev = rfkill_alloc(KBUILD_MODNAME, &device->dev,
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RFKILL_TYPE_WLAN,
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system_id->driver_data, NULL);
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if (!amilo_rfkill_dev)
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return -ENOMEM;
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rc = rfkill_register(amilo_rfkill_dev);
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if (rc)
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goto fail;
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return 0;
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fail:
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rfkill_destroy(amilo_rfkill_dev);
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return rc;
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}
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static int amilo_rfkill_remove(struct platform_device *device)
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{
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rfkill_unregister(amilo_rfkill_dev);
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rfkill_destroy(amilo_rfkill_dev);
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return 0;
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}
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static struct platform_driver amilo_rfkill_driver = {
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.driver = {
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.name = KBUILD_MODNAME,
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.owner = THIS_MODULE,
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},
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.probe = amilo_rfkill_probe,
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.remove = amilo_rfkill_remove,
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};
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static int __init amilo_rfkill_init(void)
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{
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int rc;
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if (dmi_first_match(amilo_rfkill_id_table) == NULL)
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return -ENODEV;
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rc = platform_driver_register(&amilo_rfkill_driver);
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if (rc)
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return rc;
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amilo_rfkill_pdev = platform_device_register_simple(KBUILD_MODNAME, -1,
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NULL, 0);
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if (IS_ERR(amilo_rfkill_pdev)) {
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rc = PTR_ERR(amilo_rfkill_pdev);
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goto fail;
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}
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return 0;
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fail:
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platform_driver_unregister(&amilo_rfkill_driver);
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return rc;
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}
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static void __exit amilo_rfkill_exit(void)
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{
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platform_device_unregister(amilo_rfkill_pdev);
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platform_driver_unregister(&amilo_rfkill_driver);
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}
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MODULE_AUTHOR("Ben Hutchings <ben@decadent.org.uk>");
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MODULE_LICENSE("GPL");
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MODULE_DEVICE_TABLE(dmi, amilo_rfkill_id_table);
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module_init(amilo_rfkill_init);
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module_exit(amilo_rfkill_exit);
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