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178 lines
4.1 KiB
178 lines
4.1 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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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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#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 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 L1310"), |
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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 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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}, |
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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 <[email protected]>"); |
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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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