Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 1 | /* |
| 2 | * quickstart.c - ACPI Direct App Launch driver |
| 3 | * |
| 4 | * |
| 5 | * Copyright (C) 2007-2010 Angelo Arrifano <miknix@gmail.com> |
| 6 | * |
Szymon Janc | 5c9ed5b | 2012-01-11 23:22:36 +0100 | [diff] [blame] | 7 | * Information gathered from disassembled dsdt and from here: |
Timo von Holtz | f94fdea | 2011-02-08 20:41:19 +0100 | [diff] [blame] | 8 | * <http://www.microsoft.com/whdc/system/platform/firmware/DirAppLaunch.mspx> |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 23 | * |
| 24 | */ |
| 25 | |
Szymon Janc | af5728e | 2012-02-10 21:05:44 +0100 | [diff] [blame] | 26 | #define QUICKSTART_VERSION "1.04" |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 27 | |
Szymon Janc | 74eabe4 | 2012-01-22 19:50:13 +0100 | [diff] [blame] | 28 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 29 | |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 30 | #include <linux/kernel.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/types.h> |
| 34 | #include <acpi/acpi_drivers.h> |
| 35 | #include <linux/platform_device.h> |
| 36 | #include <linux/input.h> |
| 37 | |
| 38 | MODULE_AUTHOR("Angelo Arrifano"); |
| 39 | MODULE_DESCRIPTION("ACPI Direct App Launch driver"); |
| 40 | MODULE_LICENSE("GPL"); |
| 41 | |
Szymon Janc | 5c9ed5b | 2012-01-11 23:22:36 +0100 | [diff] [blame] | 42 | #define QUICKSTART_ACPI_DEVICE_NAME "quickstart" |
| 43 | #define QUICKSTART_ACPI_CLASS "quickstart" |
| 44 | #define QUICKSTART_ACPI_HID "PNP0C32" |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 45 | |
Szymon Janc | 5c9ed5b | 2012-01-11 23:22:36 +0100 | [diff] [blame] | 46 | #define QUICKSTART_PF_DRIVER_NAME "quickstart" |
| 47 | #define QUICKSTART_PF_DEVICE_NAME "quickstart" |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 48 | |
Szymon Janc | 5c9ed5b | 2012-01-11 23:22:36 +0100 | [diff] [blame] | 49 | /* |
| 50 | * There will be two events: |
| 51 | * 0x02 - A hot button was pressed while device was off/sleeping. |
| 52 | * 0x80 - A hot button was pressed while device was up. |
| 53 | */ |
| 54 | #define QUICKSTART_EVENT_WAKE 0x02 |
| 55 | #define QUICKSTART_EVENT_RUNTIME 0x80 |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 56 | |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 57 | struct quickstart_button { |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 58 | char *name; |
| 59 | unsigned int id; |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 60 | struct list_head list; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 61 | }; |
| 62 | |
Szymon Janc | 605926ef | 2012-01-11 23:22:38 +0100 | [diff] [blame] | 63 | struct quickstart_acpi { |
| 64 | struct acpi_device *device; |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 65 | struct quickstart_button *button; |
Szymon Janc | 605926ef | 2012-01-11 23:22:38 +0100 | [diff] [blame] | 66 | }; |
| 67 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 68 | static LIST_HEAD(buttons); |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 69 | static struct quickstart_button *pressed; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 70 | |
Szymon Janc | 1692caa | 2012-01-11 23:22:39 +0100 | [diff] [blame] | 71 | static struct input_dev *quickstart_input; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 72 | |
Szymon Janc | 5c9ed5b | 2012-01-11 23:22:36 +0100 | [diff] [blame] | 73 | /* Platform driver functions */ |
Greg Kroah-Hartman | 3b7cf04 | 2013-08-24 10:34:53 -0700 | [diff] [blame] | 74 | static ssize_t buttons_show(struct device *dev, struct device_attribute *attr, |
| 75 | char *buf) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 76 | { |
| 77 | int count = 0; |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 78 | struct quickstart_button *b; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 79 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 80 | if (list_empty(&buttons)) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 81 | return snprintf(buf, PAGE_SIZE, "none"); |
| 82 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 83 | list_for_each_entry(b, &buttons, list) { |
Szymon Janc | 21c1ddf | 2012-01-11 23:22:48 +0100 | [diff] [blame] | 84 | count += snprintf(buf + count, PAGE_SIZE - count, "%u\t%s\n", |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 85 | b->id, b->name); |
| 86 | |
| 87 | if (count >= PAGE_SIZE) { |
| 88 | count = PAGE_SIZE; |
| 89 | break; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 90 | } |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | return count; |
| 94 | } |
| 95 | |
Greg Kroah-Hartman | 3b7cf04 | 2013-08-24 10:34:53 -0700 | [diff] [blame] | 96 | static ssize_t pressed_button_show(struct device *dev, |
| 97 | struct device_attribute *attr, char *buf) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 98 | { |
Szymon Janc | e66912a | 2012-02-10 21:05:42 +0100 | [diff] [blame] | 99 | return scnprintf(buf, PAGE_SIZE, "%s\n", |
Szymon Janc | 3991eae | 2012-01-11 23:22:46 +0100 | [diff] [blame] | 100 | (pressed ? pressed->name : "none")); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | |
Greg Kroah-Hartman | 3b7cf04 | 2013-08-24 10:34:53 -0700 | [diff] [blame] | 104 | static ssize_t pressed_button_store(struct device *dev, |
| 105 | struct device_attribute *attr, |
| 106 | const char *buf, size_t count) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 107 | { |
| 108 | if (count < 2) |
| 109 | return -EINVAL; |
| 110 | |
| 111 | if (strncasecmp(buf, "none", 4) != 0) |
| 112 | return -EINVAL; |
| 113 | |
Szymon Janc | 3991eae | 2012-01-11 23:22:46 +0100 | [diff] [blame] | 114 | pressed = NULL; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 115 | return count; |
| 116 | } |
| 117 | |
Szymon Janc | 5c9ed5b | 2012-01-11 23:22:36 +0100 | [diff] [blame] | 118 | /* Helper functions */ |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 119 | static struct quickstart_button *quickstart_buttons_add(void) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 120 | { |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 121 | struct quickstart_button *b; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 122 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 123 | b = kzalloc(sizeof(*b), GFP_KERNEL); |
| 124 | if (!b) |
| 125 | return NULL; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 126 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 127 | list_add_tail(&b->list, &buttons); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 128 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 129 | return b; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 130 | } |
| 131 | |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 132 | static void quickstart_button_del(struct quickstart_button *data) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 133 | { |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 134 | if (!data) |
| 135 | return; |
| 136 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 137 | list_del(&data->list); |
| 138 | kfree(data->name); |
| 139 | kfree(data); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 140 | } |
| 141 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 142 | static void quickstart_buttons_free(void) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 143 | { |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 144 | struct quickstart_button *b, *n; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 145 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 146 | list_for_each_entry_safe(b, n, &buttons, list) |
| 147 | quickstart_button_del(b); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | /* ACPI Driver functions */ |
| 151 | static void quickstart_acpi_notify(acpi_handle handle, u32 event, void *data) |
| 152 | { |
| 153 | struct quickstart_acpi *quickstart = data; |
| 154 | |
| 155 | if (!quickstart) |
| 156 | return; |
| 157 | |
Szymon Janc | 55e4036 | 2012-01-11 23:22:44 +0100 | [diff] [blame] | 158 | switch (event) { |
| 159 | case QUICKSTART_EVENT_WAKE: |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 160 | pressed = quickstart->button; |
Szymon Janc | 55e4036 | 2012-01-11 23:22:44 +0100 | [diff] [blame] | 161 | break; |
| 162 | case QUICKSTART_EVENT_RUNTIME: |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 163 | input_report_key(quickstart_input, quickstart->button->id, 1); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 164 | input_sync(quickstart_input); |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 165 | input_report_key(quickstart_input, quickstart->button->id, 0); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 166 | input_sync(quickstart_input); |
Szymon Janc | 55e4036 | 2012-01-11 23:22:44 +0100 | [diff] [blame] | 167 | break; |
| 168 | default: |
Szymon Janc | 74eabe4 | 2012-01-22 19:50:13 +0100 | [diff] [blame] | 169 | pr_err("Unexpected ACPI event notify (%u)\n", event); |
Szymon Janc | 55e4036 | 2012-01-11 23:22:44 +0100 | [diff] [blame] | 170 | break; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 171 | } |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 172 | } |
| 173 | |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 174 | static int quickstart_acpi_ghid(struct quickstart_acpi *quickstart) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 175 | { |
| 176 | acpi_status status; |
| 177 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 178 | int ret = 0; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 179 | |
Szymon Janc | 5c9ed5b | 2012-01-11 23:22:36 +0100 | [diff] [blame] | 180 | /* |
| 181 | * This returns a buffer telling the button usage ID, |
| 182 | * and triggers pending notify events (The ones before booting). |
| 183 | */ |
| 184 | status = acpi_evaluate_object(quickstart->device->handle, "GHID", NULL, |
| 185 | &buffer); |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 186 | if (ACPI_FAILURE(status)) { |
Szymon Janc | 74eabe4 | 2012-01-22 19:50:13 +0100 | [diff] [blame] | 187 | pr_err("%s GHID method failed\n", quickstart->button->name); |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 188 | return -EINVAL; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 189 | } |
| 190 | |
Szymon Janc | 5c9ed5b | 2012-01-11 23:22:36 +0100 | [diff] [blame] | 191 | /* |
| 192 | * <<The GHID method can return a BYTE, WORD, or DWORD. |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 193 | * The value must be encoded in little-endian byte |
Szymon Janc | 5c9ed5b | 2012-01-11 23:22:36 +0100 | [diff] [blame] | 194 | * order (least significant byte first).>> |
| 195 | */ |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 196 | switch (buffer.length) { |
| 197 | case 1: |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 198 | quickstart->button->id = *(uint8_t *)buffer.pointer; |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 199 | break; |
| 200 | case 2: |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 201 | quickstart->button->id = *(uint16_t *)buffer.pointer; |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 202 | break; |
| 203 | case 4: |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 204 | quickstart->button->id = *(uint32_t *)buffer.pointer; |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 205 | break; |
| 206 | case 8: |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 207 | quickstart->button->id = *(uint64_t *)buffer.pointer; |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 208 | break; |
| 209 | default: |
Szymon Janc | 5f01f7f | 2012-02-10 21:05:43 +0100 | [diff] [blame] | 210 | pr_err("%s GHID method returned buffer of unexpected length %lu\n", |
| 211 | quickstart->button->name, |
| 212 | (unsigned long)buffer.length); |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 213 | ret = -EINVAL; |
| 214 | break; |
| 215 | } |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 216 | |
| 217 | kfree(buffer.pointer); |
Szymon Janc | 2ac1696 | 2012-01-11 23:22:40 +0100 | [diff] [blame] | 218 | |
| 219 | return ret; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 220 | } |
| 221 | |
Szymon Janc | ffe1c05 | 2012-01-11 23:22:43 +0100 | [diff] [blame] | 222 | static int quickstart_acpi_config(struct quickstart_acpi *quickstart) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 223 | { |
Szymon Janc | ffe1c05 | 2012-01-11 23:22:43 +0100 | [diff] [blame] | 224 | char *bid = acpi_device_bid(quickstart->device); |
| 225 | char *name; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 226 | |
Szymon Janc | ffe1c05 | 2012-01-11 23:22:43 +0100 | [diff] [blame] | 227 | name = kmalloc(strlen(bid) + 1, GFP_KERNEL); |
| 228 | if (!name) |
| 229 | return -ENOMEM; |
| 230 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 231 | /* Add new button to list */ |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 232 | quickstart->button = quickstart_buttons_add(); |
| 233 | if (!quickstart->button) { |
Szymon Janc | ffe1c05 | 2012-01-11 23:22:43 +0100 | [diff] [blame] | 234 | kfree(name); |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 235 | return -ENOMEM; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 236 | } |
Szymon Janc | ffe1c05 | 2012-01-11 23:22:43 +0100 | [diff] [blame] | 237 | |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 238 | quickstart->button->name = name; |
| 239 | strcpy(quickstart->button->name, bid); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 240 | |
| 241 | return 0; |
| 242 | } |
| 243 | |
| 244 | static int quickstart_acpi_add(struct acpi_device *device) |
| 245 | { |
Szymon Janc | f27a551 | 2012-01-11 23:22:42 +0100 | [diff] [blame] | 246 | int ret; |
| 247 | acpi_status status; |
| 248 | struct quickstart_acpi *quickstart; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 249 | |
| 250 | if (!device) |
| 251 | return -EINVAL; |
| 252 | |
Szymon Janc | f27a551 | 2012-01-11 23:22:42 +0100 | [diff] [blame] | 253 | quickstart = kzalloc(sizeof(*quickstart), GFP_KERNEL); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 254 | if (!quickstart) |
| 255 | return -ENOMEM; |
| 256 | |
| 257 | quickstart->device = device; |
Szymon Janc | f27a551 | 2012-01-11 23:22:42 +0100 | [diff] [blame] | 258 | |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 259 | strcpy(acpi_device_name(device), QUICKSTART_ACPI_DEVICE_NAME); |
| 260 | strcpy(acpi_device_class(device), QUICKSTART_ACPI_CLASS); |
| 261 | device->driver_data = quickstart; |
| 262 | |
| 263 | /* Add button to list and initialize some stuff */ |
Szymon Janc | ffe1c05 | 2012-01-11 23:22:43 +0100 | [diff] [blame] | 264 | ret = quickstart_acpi_config(quickstart); |
Szymon Janc | f27a551 | 2012-01-11 23:22:42 +0100 | [diff] [blame] | 265 | if (ret < 0) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 266 | goto fail_config; |
| 267 | |
Szymon Janc | f27a551 | 2012-01-11 23:22:42 +0100 | [diff] [blame] | 268 | status = acpi_install_notify_handler(device->handle, ACPI_ALL_NOTIFY, |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 269 | quickstart_acpi_notify, |
| 270 | quickstart); |
| 271 | if (ACPI_FAILURE(status)) { |
Szymon Janc | 74eabe4 | 2012-01-22 19:50:13 +0100 | [diff] [blame] | 272 | pr_err("Notify handler install error\n"); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 273 | ret = -ENODEV; |
| 274 | goto fail_installnotify; |
| 275 | } |
| 276 | |
Szymon Janc | f27a551 | 2012-01-11 23:22:42 +0100 | [diff] [blame] | 277 | ret = quickstart_acpi_ghid(quickstart); |
| 278 | if (ret < 0) |
| 279 | goto fail_ghid; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 280 | |
| 281 | return 0; |
| 282 | |
Szymon Janc | f27a551 | 2012-01-11 23:22:42 +0100 | [diff] [blame] | 283 | fail_ghid: |
| 284 | acpi_remove_notify_handler(device->handle, ACPI_ALL_NOTIFY, |
| 285 | quickstart_acpi_notify); |
| 286 | |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 287 | fail_installnotify: |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 288 | quickstart_button_del(quickstart->button); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 289 | |
| 290 | fail_config: |
| 291 | |
| 292 | kfree(quickstart); |
| 293 | |
| 294 | return ret; |
| 295 | } |
| 296 | |
Rafael J. Wysocki | 51fac83 | 2013-01-24 00:24:48 +0100 | [diff] [blame] | 297 | static int quickstart_acpi_remove(struct acpi_device *device) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 298 | { |
Szymon Janc | 60955f1 | 2012-01-11 23:22:41 +0100 | [diff] [blame] | 299 | acpi_status status; |
| 300 | struct quickstart_acpi *quickstart; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 301 | |
Szymon Janc | 60955f1 | 2012-01-11 23:22:41 +0100 | [diff] [blame] | 302 | if (!device) |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 303 | return -EINVAL; |
| 304 | |
| 305 | quickstart = acpi_driver_data(device); |
Szymon Janc | 60955f1 | 2012-01-11 23:22:41 +0100 | [diff] [blame] | 306 | if (!quickstart) |
| 307 | return -EINVAL; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 308 | |
Szymon Janc | 5c9ed5b | 2012-01-11 23:22:36 +0100 | [diff] [blame] | 309 | status = acpi_remove_notify_handler(device->handle, ACPI_ALL_NOTIFY, |
| 310 | quickstart_acpi_notify); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 311 | if (ACPI_FAILURE(status)) |
Szymon Janc | 74eabe4 | 2012-01-22 19:50:13 +0100 | [diff] [blame] | 312 | pr_err("Error removing notify handler\n"); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 313 | |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 314 | kfree(quickstart); |
| 315 | |
| 316 | return 0; |
| 317 | } |
| 318 | |
Szymon Janc | 605926ef | 2012-01-11 23:22:38 +0100 | [diff] [blame] | 319 | /* Platform driver structs */ |
Greg Kroah-Hartman | 3b7cf04 | 2013-08-24 10:34:53 -0700 | [diff] [blame] | 320 | static DEVICE_ATTR_RW(pressed_button); |
| 321 | static DEVICE_ATTR_RO(buttons); |
Szymon Janc | 605926ef | 2012-01-11 23:22:38 +0100 | [diff] [blame] | 322 | static struct platform_device *pf_device; |
| 323 | static struct platform_driver pf_driver = { |
| 324 | .driver = { |
| 325 | .name = QUICKSTART_PF_DRIVER_NAME, |
| 326 | .owner = THIS_MODULE, |
| 327 | } |
| 328 | }; |
| 329 | |
| 330 | static const struct acpi_device_id quickstart_device_ids[] = { |
| 331 | {QUICKSTART_ACPI_HID, 0}, |
| 332 | {"", 0}, |
| 333 | }; |
| 334 | |
| 335 | static struct acpi_driver quickstart_acpi_driver = { |
| 336 | .name = "quickstart", |
| 337 | .class = QUICKSTART_ACPI_CLASS, |
| 338 | .ids = quickstart_device_ids, |
| 339 | .ops = { |
| 340 | .add = quickstart_acpi_add, |
| 341 | .remove = quickstart_acpi_remove, |
| 342 | }, |
| 343 | }; |
| 344 | |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 345 | /* Module functions */ |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 346 | static void quickstart_exit(void) |
| 347 | { |
| 348 | input_unregister_device(quickstart_input); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 349 | |
| 350 | device_remove_file(&pf_device->dev, &dev_attr_pressed_button); |
| 351 | device_remove_file(&pf_device->dev, &dev_attr_buttons); |
| 352 | |
| 353 | platform_device_unregister(pf_device); |
| 354 | |
| 355 | platform_driver_unregister(&pf_driver); |
| 356 | |
| 357 | acpi_bus_unregister_driver(&quickstart_acpi_driver); |
| 358 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 359 | quickstart_buttons_free(); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | static int __init quickstart_init_input(void) |
| 363 | { |
Szymon Janc | 3c92e38 | 2012-01-11 23:22:49 +0100 | [diff] [blame] | 364 | struct quickstart_button *b; |
Dan Carpenter | ebba26f | 2010-11-12 08:04:43 +0300 | [diff] [blame] | 365 | int ret; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 366 | |
| 367 | quickstart_input = input_allocate_device(); |
| 368 | |
| 369 | if (!quickstart_input) |
| 370 | return -ENOMEM; |
| 371 | |
| 372 | quickstart_input->name = "Quickstart ACPI Buttons"; |
| 373 | quickstart_input->id.bustype = BUS_HOST; |
| 374 | |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 375 | list_for_each_entry(b, &buttons, list) { |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 376 | set_bit(EV_KEY, quickstart_input->evbit); |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 377 | set_bit(b->id, quickstart_input->keybit); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 378 | } |
| 379 | |
Dan Carpenter | ebba26f | 2010-11-12 08:04:43 +0300 | [diff] [blame] | 380 | ret = input_register_device(quickstart_input); |
| 381 | if (ret) { |
| 382 | input_free_device(quickstart_input); |
| 383 | return ret; |
| 384 | } |
| 385 | |
| 386 | return 0; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 387 | } |
| 388 | |
| 389 | static int __init quickstart_init(void) |
| 390 | { |
| 391 | int ret; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 392 | |
| 393 | /* ACPI Check */ |
| 394 | if (acpi_disabled) |
| 395 | return -ENODEV; |
| 396 | |
| 397 | /* ACPI driver register */ |
Dan Carpenter | f090386 | 2010-08-10 07:42:25 +0200 | [diff] [blame] | 398 | ret = acpi_bus_register_driver(&quickstart_acpi_driver); |
| 399 | if (ret) |
| 400 | return ret; |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 401 | |
| 402 | /* If existing bus with no devices */ |
Szymon Janc | 505d2ad | 2012-01-11 23:22:47 +0100 | [diff] [blame] | 403 | if (list_empty(&buttons)) { |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 404 | ret = -ENODEV; |
| 405 | goto fail_pfdrv_reg; |
| 406 | } |
| 407 | |
| 408 | /* Platform driver register */ |
| 409 | ret = platform_driver_register(&pf_driver); |
| 410 | if (ret) |
| 411 | goto fail_pfdrv_reg; |
| 412 | |
| 413 | /* Platform device register */ |
| 414 | pf_device = platform_device_alloc(QUICKSTART_PF_DEVICE_NAME, -1); |
| 415 | if (!pf_device) { |
| 416 | ret = -ENOMEM; |
| 417 | goto fail_pfdev_alloc; |
| 418 | } |
| 419 | ret = platform_device_add(pf_device); |
| 420 | if (ret) |
| 421 | goto fail_pfdev_add; |
| 422 | |
| 423 | /* Create device sysfs file */ |
| 424 | ret = device_create_file(&pf_device->dev, &dev_attr_pressed_button); |
| 425 | if (ret) |
| 426 | goto fail_dev_file; |
| 427 | |
| 428 | ret = device_create_file(&pf_device->dev, &dev_attr_buttons); |
| 429 | if (ret) |
| 430 | goto fail_dev_file2; |
| 431 | |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 432 | /* Input device */ |
| 433 | ret = quickstart_init_input(); |
| 434 | if (ret) |
| 435 | goto fail_input; |
| 436 | |
Szymon Janc | 74eabe4 | 2012-01-22 19:50:13 +0100 | [diff] [blame] | 437 | pr_info("ACPI Direct App Launch ver %s\n", QUICKSTART_VERSION); |
Angelo Arrifano | 6da4cd4 | 2010-07-08 16:20:56 -0700 | [diff] [blame] | 438 | |
| 439 | return 0; |
| 440 | fail_input: |
| 441 | device_remove_file(&pf_device->dev, &dev_attr_buttons); |
| 442 | |
| 443 | fail_dev_file2: |
| 444 | device_remove_file(&pf_device->dev, &dev_attr_pressed_button); |
| 445 | |
| 446 | fail_dev_file: |
| 447 | platform_device_del(pf_device); |
| 448 | |
| 449 | fail_pfdev_add: |
| 450 | platform_device_put(pf_device); |
| 451 | |
| 452 | fail_pfdev_alloc: |
| 453 | platform_driver_unregister(&pf_driver); |
| 454 | |
| 455 | fail_pfdrv_reg: |
| 456 | acpi_bus_unregister_driver(&quickstart_acpi_driver); |
| 457 | |
| 458 | return ret; |
| 459 | } |
| 460 | |
| 461 | module_init(quickstart_init); |
| 462 | module_exit(quickstart_exit); |