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Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -03001/*
2 * ACPI driver for Topstar notebooks (hotkeys support only)
3 *
4 * Copyright (c) 2009 Herton Ronaldo Krzesinski <herton@mandriva.com.br>
5 *
6 * Implementation inspired by existing x86 platform drivers, in special
7 * asus/eepc/fujitsu-laptop, thanks to their authors
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
15
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/init.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090019#include <linux/slab.h>
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -030020#include <linux/acpi.h>
21#include <linux/input.h>
Dmitry Torokhov97490f12010-08-04 22:29:57 -070022#include <linux/input/sparse-keymap.h>
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -030023
24#define ACPI_TOPSTAR_CLASS "topstar"
25
26struct topstar_hkey {
27 struct input_dev *inputdev;
28};
29
Dmitry Torokhov97490f12010-08-04 22:29:57 -070030static const struct key_entry topstar_keymap[] = {
31 { KE_KEY, 0x80, { KEY_BRIGHTNESSUP } },
32 { KE_KEY, 0x81, { KEY_BRIGHTNESSDOWN } },
33 { KE_KEY, 0x83, { KEY_VOLUMEUP } },
34 { KE_KEY, 0x84, { KEY_VOLUMEDOWN } },
35 { KE_KEY, 0x85, { KEY_MUTE } },
36 { KE_KEY, 0x86, { KEY_SWITCHVIDEOMODE } },
37 { KE_KEY, 0x87, { KEY_F13 } }, /* touchpad enable/disable key */
38 { KE_KEY, 0x88, { KEY_WLAN } },
39 { KE_KEY, 0x8a, { KEY_WWW } },
40 { KE_KEY, 0x8b, { KEY_MAIL } },
41 { KE_KEY, 0x8c, { KEY_MEDIA } },
42
43 /* Known non hotkey events don't handled or that we don't care yet */
Manuel Laussbd038082011-09-26 15:04:54 +020044 { KE_IGNORE, 0x82, }, /* backlight event */
Dmitry Torokhov97490f12010-08-04 22:29:57 -070045 { KE_IGNORE, 0x8e, },
46 { KE_IGNORE, 0x8f, },
47 { KE_IGNORE, 0x90, },
48
49 /*
50 * 'G key' generate two event codes, convert to only
51 * one event/key code for now, consider replacing by
52 * a switch (3G switch - SW_3G?)
53 */
54 { KE_KEY, 0x96, { KEY_F14 } },
55 { KE_KEY, 0x97, { KEY_F14 } },
56
57 { KE_END, 0 }
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -030058};
59
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -030060static void acpi_topstar_notify(struct acpi_device *device, u32 event)
61{
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -030062 static bool dup_evnt[2];
63 bool *dup;
64 struct topstar_hkey *hkey = acpi_driver_data(device);
65
66 /* 0x83 and 0x84 key events comes duplicated... */
67 if (event == 0x83 || event == 0x84) {
68 dup = &dup_evnt[event - 0x83];
69 if (*dup) {
70 *dup = false;
71 return;
72 }
73 *dup = true;
74 }
75
Dmitry Torokhov97490f12010-08-04 22:29:57 -070076 if (!sparse_keymap_report_event(hkey->inputdev, event, 1, true))
77 pr_info("unknown event = 0x%02x\n", event);
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -030078}
79
80static int acpi_topstar_fncx_switch(struct acpi_device *device, bool state)
81{
82 acpi_status status;
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -030083
Zhang Ruia7f64512013-09-03 08:31:55 +080084 status = acpi_execute_simple_method(device->handle, "FNCX",
85 state ? 0x86 : 0x87);
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -030086 if (ACPI_FAILURE(status)) {
87 pr_err("Unable to switch FNCX notifications\n");
88 return -ENODEV;
89 }
90
91 return 0;
92}
93
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -030094static int acpi_topstar_init_hkey(struct topstar_hkey *hkey)
95{
Dmitry Torokhov97490f12010-08-04 22:29:57 -070096 struct input_dev *input;
97 int error;
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -030098
Dmitry Torokhov97490f12010-08-04 22:29:57 -070099 input = input_allocate_device();
Joe Perchesb222cca2013-10-23 12:14:52 -0700100 if (!input)
Dmitry Torokhov97490f12010-08-04 22:29:57 -0700101 return -ENOMEM;
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -0300102
Dmitry Torokhov97490f12010-08-04 22:29:57 -0700103 input->name = "Topstar Laptop extra buttons";
104 input->phys = "topstar/input0";
105 input->id.bustype = BUS_HOST;
106
107 error = sparse_keymap_setup(input, topstar_keymap, NULL);
108 if (error) {
109 pr_err("Unable to setup input device keymap\n");
110 goto err_free_dev;
111 }
112
113 error = input_register_device(input);
114 if (error) {
115 pr_err("Unable to register input device\n");
Michał Kępień3f2e1a32017-03-09 13:11:48 +0100116 goto err_free_dev;
Dmitry Torokhov97490f12010-08-04 22:29:57 -0700117 }
118
119 hkey->inputdev = input;
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -0300120 return 0;
Dmitry Torokhov97490f12010-08-04 22:29:57 -0700121
Dmitry Torokhov97490f12010-08-04 22:29:57 -0700122 err_free_dev:
123 input_free_device(input);
124 return error;
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -0300125}
126
127static int acpi_topstar_add(struct acpi_device *device)
128{
129 struct topstar_hkey *tps_hkey;
130
131 tps_hkey = kzalloc(sizeof(struct topstar_hkey), GFP_KERNEL);
132 if (!tps_hkey)
133 return -ENOMEM;
134
135 strcpy(acpi_device_name(device), "Topstar TPSACPI");
136 strcpy(acpi_device_class(device), ACPI_TOPSTAR_CLASS);
137
138 if (acpi_topstar_fncx_switch(device, true))
139 goto add_err;
140
141 if (acpi_topstar_init_hkey(tps_hkey))
142 goto add_err;
143
144 device->driver_data = tps_hkey;
145 return 0;
146
147add_err:
148 kfree(tps_hkey);
149 return -ENODEV;
150}
151
Rafael J. Wysocki51fac832013-01-24 00:24:48 +0100152static int acpi_topstar_remove(struct acpi_device *device)
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -0300153{
154 struct topstar_hkey *tps_hkey = acpi_driver_data(device);
155
156 acpi_topstar_fncx_switch(device, false);
157
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -0300158 input_unregister_device(tps_hkey->inputdev);
159 kfree(tps_hkey);
160
161 return 0;
162}
163
164static const struct acpi_device_id topstar_device_ids[] = {
165 { "TPSACPI01", 0 },
166 { "", 0 },
167};
168MODULE_DEVICE_TABLE(acpi, topstar_device_ids);
169
170static struct acpi_driver acpi_topstar_driver = {
171 .name = "Topstar laptop ACPI driver",
172 .class = ACPI_TOPSTAR_CLASS,
173 .ids = topstar_device_ids,
174 .ops = {
175 .add = acpi_topstar_add,
176 .remove = acpi_topstar_remove,
177 .notify = acpi_topstar_notify,
178 },
179};
Mika Westerberg15165592012-09-07 10:31:47 +0300180module_acpi_driver(acpi_topstar_driver);
Herton Ronaldo Krzesinski9caeb532009-09-14 21:11:21 -0300181
182MODULE_AUTHOR("Herton Ronaldo Krzesinski");
183MODULE_DESCRIPTION("Topstar Laptop ACPI Extras driver");
184MODULE_LICENSE("GPL");