Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * pnpacpi -- PnP ACPI driver |
| 3 | * |
| 4 | * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr> |
| 5 | * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com> |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 6 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License as published by the |
| 9 | * Free Software Foundation; either version 2, or (at your option) any |
| 10 | * later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/acpi.h> |
| 23 | #include <linux/pnp.h> |
Thomas Renninger | 29b71a1 | 2007-07-23 14:43:51 +0200 | [diff] [blame] | 24 | #include <linux/mod_devicetable.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <acpi/acpi_bus.h> |
Thomas Renninger | 29b71a1 | 2007-07-23 14:43:51 +0200 | [diff] [blame] | 26 | |
Bjorn Helgaas | 1692b27 | 2008-04-28 16:33:51 -0600 | [diff] [blame] | 27 | #include "../base.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include "pnpacpi.h" |
| 29 | |
| 30 | static int num = 0; |
| 31 | |
matthieu castet | c4bb6f5 | 2006-01-06 01:31:00 -0500 | [diff] [blame] | 32 | /* We need only to blacklist devices that have already an acpi driver that |
| 33 | * can't use pnp layer. We don't need to blacklist device that are directly |
| 34 | * used by the kernel (PCI root, ...), as it is harmless and there were |
| 35 | * already present in pnpbios. But there is an exception for devices that |
| 36 | * have irqs (PIC, Timer) because we call acpi_register_gsi. |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 37 | * Finally, only devices that have a CRS method need to be in this list. |
matthieu castet | c4bb6f5 | 2006-01-06 01:31:00 -0500 | [diff] [blame] | 38 | */ |
Roel Kluin | 6bf69b5 | 2008-02-11 16:05:35 +0100 | [diff] [blame] | 39 | static struct acpi_device_id excluded_id_list[] __initdata = { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 40 | {"PNP0C09", 0}, /* EC */ |
| 41 | {"PNP0C0F", 0}, /* Link device */ |
| 42 | {"PNP0000", 0}, /* PIC */ |
| 43 | {"PNP0100", 0}, /* Timer */ |
Thomas Renninger | 29b71a1 | 2007-07-23 14:43:51 +0200 | [diff] [blame] | 44 | {"", 0}, |
| 45 | }; |
| 46 | |
Sam Ravnborg | 9448b0d | 2008-04-29 22:52:01 +0200 | [diff] [blame] | 47 | static inline int __init is_exclusive_device(struct acpi_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | { |
Thomas Renninger | 29b71a1 | 2007-07-23 14:43:51 +0200 | [diff] [blame] | 49 | return (!acpi_match_device_ids(dev, excluded_id_list)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | } |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | /* |
| 53 | * Compatible Device IDs |
| 54 | */ |
| 55 | #define TEST_HEX(c) \ |
| 56 | if (!(('0' <= (c) && (c) <= '9') || ('A' <= (c) && (c) <= 'F'))) \ |
| 57 | return 0 |
| 58 | #define TEST_ALPHA(c) \ |
| 59 | if (!('@' <= (c) || (c) <= 'Z')) \ |
| 60 | return 0 |
| 61 | static int __init ispnpidacpi(char *id) |
| 62 | { |
| 63 | TEST_ALPHA(id[0]); |
| 64 | TEST_ALPHA(id[1]); |
| 65 | TEST_ALPHA(id[2]); |
| 66 | TEST_HEX(id[3]); |
| 67 | TEST_HEX(id[4]); |
| 68 | TEST_HEX(id[5]); |
| 69 | TEST_HEX(id[6]); |
| 70 | if (id[7] != '\0') |
| 71 | return 0; |
| 72 | return 1; |
| 73 | } |
| 74 | |
Bjorn Helgaas | 59284cb | 2008-04-28 16:34:05 -0600 | [diff] [blame] | 75 | static int pnpacpi_get_resources(struct pnp_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | { |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 77 | pnp_dbg(&dev->dev, "get resources\n"); |
Bjorn Helgaas | d152cf5 | 2008-04-28 16:34:39 -0600 | [diff] [blame] | 78 | return pnpacpi_parse_allocated_resource(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | } |
| 80 | |
Bjorn Helgaas | 59284cb | 2008-04-28 16:34:05 -0600 | [diff] [blame] | 81 | static int pnpacpi_set_resources(struct pnp_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | { |
Bjorn Helgaas | c4da694 | 2009-11-17 17:05:14 -0700 | [diff] [blame] | 83 | struct acpi_device *acpi_dev = dev->data; |
| 84 | acpi_handle handle = acpi_dev->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | struct acpi_buffer buffer; |
Bjorn Helgaas | cdef625 | 2008-04-28 16:34:03 -0600 | [diff] [blame] | 86 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
Bjorn Helgaas | 2f53432 | 2008-08-19 16:53:47 -0600 | [diff] [blame] | 88 | pnp_dbg(&dev->dev, "set resources\n"); |
Bjorn Helgaas | cdef625 | 2008-04-28 16:34:03 -0600 | [diff] [blame] | 89 | ret = pnpacpi_build_resource_template(dev, &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | if (ret) |
| 91 | return ret; |
Bjorn Helgaas | 4ab55d8 | 2008-04-28 16:34:06 -0600 | [diff] [blame] | 92 | ret = pnpacpi_encode_resources(dev, &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | if (ret) { |
| 94 | kfree(buffer.pointer); |
| 95 | return ret; |
| 96 | } |
Witold Szczeponik | 6328a57 | 2009-03-30 19:31:06 +0200 | [diff] [blame] | 97 | if (ACPI_FAILURE(acpi_set_current_resources(handle, &buffer))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | ret = -EINVAL; |
Witold Szczeponik | 6328a57 | 2009-03-30 19:31:06 +0200 | [diff] [blame] | 99 | else if (acpi_bus_power_manageable(handle)) |
| 100 | ret = acpi_bus_set_power(handle, ACPI_STATE_D0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | kfree(buffer.pointer); |
| 102 | return ret; |
| 103 | } |
| 104 | |
| 105 | static int pnpacpi_disable_resources(struct pnp_dev *dev) |
| 106 | { |
Bjorn Helgaas | c4da694 | 2009-11-17 17:05:14 -0700 | [diff] [blame] | 107 | struct acpi_device *acpi_dev = dev->data; |
| 108 | acpi_handle handle = acpi_dev->handle; |
Witold Szczeponik | 6328a57 | 2009-03-30 19:31:06 +0200 | [diff] [blame] | 109 | int ret; |
| 110 | |
| 111 | dev_dbg(&dev->dev, "disable resources\n"); |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | /* acpi_unregister_gsi(pnp_irq(dev, 0)); */ |
Witold Szczeponik | 6328a57 | 2009-03-30 19:31:06 +0200 | [diff] [blame] | 114 | ret = 0; |
Len Brown | 19bde77 | 2009-05-08 00:22:29 -0400 | [diff] [blame] | 115 | if (acpi_bus_power_manageable(handle)) |
| 116 | acpi_bus_set_power(handle, ACPI_STATE_D3); |
| 117 | /* continue even if acpi_bus_set_power() fails */ |
Witold Szczeponik | 6328a57 | 2009-03-30 19:31:06 +0200 | [diff] [blame] | 118 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_DIS", NULL, NULL))) |
| 119 | ret = -ENODEV; |
| 120 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | } |
| 122 | |
Len Brown | 673d5b4 | 2007-07-28 03:33:16 -0400 | [diff] [blame] | 123 | #ifdef CONFIG_ACPI_SLEEP |
Shaohua Li | fc30e68 | 2007-07-20 10:03:20 +0800 | [diff] [blame] | 124 | static int pnpacpi_suspend(struct pnp_dev *dev, pm_message_t state) |
| 125 | { |
Bjorn Helgaas | c4da694 | 2009-11-17 17:05:14 -0700 | [diff] [blame] | 126 | struct acpi_device *acpi_dev = dev->data; |
| 127 | acpi_handle handle = acpi_dev->handle; |
Rafael J. Wysocki | 36e02b6 | 2007-10-16 23:31:06 -0700 | [diff] [blame] | 128 | int power_state; |
| 129 | |
David Brownell | 2fe2de5 | 2008-06-05 01:15:40 +0200 | [diff] [blame] | 130 | power_state = acpi_pm_device_sleep_state(&dev->dev, NULL); |
Rafael J. Wysocki | 36e02b6 | 2007-10-16 23:31:06 -0700 | [diff] [blame] | 131 | if (power_state < 0) |
| 132 | power_state = (state.event == PM_EVENT_ON) ? |
| 133 | ACPI_STATE_D0 : ACPI_STATE_D3; |
| 134 | |
Bjorn Helgaas | c4da694 | 2009-11-17 17:05:14 -0700 | [diff] [blame] | 135 | return acpi_bus_set_power(handle, power_state); |
Shaohua Li | fc30e68 | 2007-07-20 10:03:20 +0800 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | static int pnpacpi_resume(struct pnp_dev *dev) |
| 139 | { |
Bjorn Helgaas | c4da694 | 2009-11-17 17:05:14 -0700 | [diff] [blame] | 140 | struct acpi_device *acpi_dev = dev->data; |
| 141 | acpi_handle handle = acpi_dev->handle; |
| 142 | |
| 143 | return acpi_bus_set_power(handle, ACPI_STATE_D0); |
Shaohua Li | fc30e68 | 2007-07-20 10:03:20 +0800 | [diff] [blame] | 144 | } |
Len Brown | 673d5b4 | 2007-07-28 03:33:16 -0400 | [diff] [blame] | 145 | #endif |
Shaohua Li | fc30e68 | 2007-07-20 10:03:20 +0800 | [diff] [blame] | 146 | |
Bjorn Helgaas | 9065ce4 | 2009-11-17 17:05:19 -0700 | [diff] [blame] | 147 | struct pnp_protocol pnpacpi_protocol = { |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 148 | .name = "Plug and Play ACPI", |
| 149 | .get = pnpacpi_get_resources, |
| 150 | .set = pnpacpi_set_resources, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | .disable = pnpacpi_disable_resources, |
Len Brown | 673d5b4 | 2007-07-28 03:33:16 -0400 | [diff] [blame] | 152 | #ifdef CONFIG_ACPI_SLEEP |
Shaohua Li | fc30e68 | 2007-07-20 10:03:20 +0800 | [diff] [blame] | 153 | .suspend = pnpacpi_suspend, |
| 154 | .resume = pnpacpi_resume, |
Len Brown | 673d5b4 | 2007-07-28 03:33:16 -0400 | [diff] [blame] | 155 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | }; |
Bjorn Helgaas | 9065ce4 | 2009-11-17 17:05:19 -0700 | [diff] [blame] | 157 | EXPORT_SYMBOL(pnpacpi_protocol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | |
| 159 | static int __init pnpacpi_add_device(struct acpi_device *device) |
| 160 | { |
| 161 | acpi_handle temp = NULL; |
| 162 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | struct pnp_dev *dev; |
Bjorn Helgaas | 7f47fa6 | 2009-09-21 13:35:19 -0600 | [diff] [blame] | 164 | struct acpi_hardware_id *id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
Zhao Yakui | 39a0ad8 | 2008-08-11 13:40:22 +0800 | [diff] [blame] | 166 | /* |
| 167 | * If a PnPacpi device is not present , the device |
| 168 | * driver should not be loaded. |
| 169 | */ |
matthieu castet | 07b0120 | 2006-01-06 01:31:00 -0500 | [diff] [blame] | 170 | status = acpi_get_handle(device->handle, "_CRS", &temp); |
| 171 | if (ACPI_FAILURE(status) || !ispnpidacpi(acpi_device_hid(device)) || |
Zhao Yakui | 39a0ad8 | 2008-08-11 13:40:22 +0800 | [diff] [blame] | 172 | is_exclusive_device(device) || (!device->status.present)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | return 0; |
| 174 | |
Bjorn Helgaas | bda1e4e | 2008-04-28 16:33:54 -0600 | [diff] [blame] | 175 | dev = pnp_alloc_dev(&pnpacpi_protocol, num, acpi_device_hid(device)); |
| 176 | if (!dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | return -ENOMEM; |
Bjorn Helgaas | bda1e4e | 2008-04-28 16:33:54 -0600 | [diff] [blame] | 178 | |
Bjorn Helgaas | c4da694 | 2009-11-17 17:05:14 -0700 | [diff] [blame] | 179 | dev->data = device; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 180 | /* .enabled means the device can decode the resources */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | dev->active = device->status.enabled; |
| 182 | status = acpi_get_handle(device->handle, "_SRS", &temp); |
| 183 | if (ACPI_SUCCESS(status)) |
| 184 | dev->capabilities |= PNP_CONFIGURABLE; |
| 185 | dev->capabilities |= PNP_READ; |
Shaohua Li | 856608e | 2008-01-12 19:37:49 -0500 | [diff] [blame] | 186 | if (device->flags.dynamic_status && (dev->capabilities & PNP_CONFIGURABLE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | dev->capabilities |= PNP_WRITE; |
| 188 | if (device->flags.removable) |
| 189 | dev->capabilities |= PNP_REMOVABLE; |
| 190 | status = acpi_get_handle(device->handle, "_DIS", &temp); |
| 191 | if (ACPI_SUCCESS(status)) |
| 192 | dev->capabilities |= PNP_DISABLE; |
| 193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | if (strlen(acpi_device_name(device))) |
| 195 | strncpy(dev->name, acpi_device_name(device), sizeof(dev->name)); |
| 196 | else |
| 197 | strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name)); |
| 198 | |
Bjorn Helgaas | d152cf5 | 2008-04-28 16:34:39 -0600 | [diff] [blame] | 199 | if (dev->active) |
| 200 | pnpacpi_parse_allocated_resource(dev); |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 201 | |
Bjorn Helgaas | d152cf5 | 2008-04-28 16:34:39 -0600 | [diff] [blame] | 202 | if (dev->capabilities & PNP_CONFIGURABLE) |
| 203 | pnpacpi_parse_resource_option_data(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
Bjorn Helgaas | 7f47fa6 | 2009-09-21 13:35:19 -0600 | [diff] [blame] | 205 | list_for_each_entry(id, &device->pnp.ids, list) { |
| 206 | if (!strcmp(id->id, acpi_device_hid(device))) |
| 207 | continue; |
| 208 | if (!ispnpidacpi(id->id)) |
| 209 | continue; |
| 210 | pnp_add_id(dev, id->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | /* clear out the damaged flags */ |
| 214 | if (!dev->active) |
Bjorn Helgaas | f449000 | 2008-04-28 16:34:09 -0600 | [diff] [blame] | 215 | pnp_init_resources(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | pnp_add_device(dev); |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 217 | num++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
| 219 | return AE_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | static acpi_status __init pnpacpi_add_device_handler(acpi_handle handle, |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 223 | u32 lvl, void *context, |
| 224 | void **rv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | { |
| 226 | struct acpi_device *device; |
| 227 | |
| 228 | if (!acpi_bus_get_device(handle, &device)) |
| 229 | pnpacpi_add_device(device); |
| 230 | else |
| 231 | return AE_CTRL_DEPTH; |
| 232 | return AE_OK; |
| 233 | } |
| 234 | |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 235 | static int __init acpi_pnp_match(struct device *dev, void *_pnp) |
| 236 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 237 | struct acpi_device *acpi = to_acpi_device(dev); |
| 238 | struct pnp_dev *pnp = _pnp; |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 239 | |
| 240 | /* true means it matched */ |
Bjorn Helgaas | 1131b93 | 2009-09-21 13:35:29 -0600 | [diff] [blame] | 241 | return !acpi_get_physical_device(acpi->handle) |
Bjorn Helgaas | ea8d82f | 2009-09-21 13:35:09 -0600 | [diff] [blame] | 242 | && compare_pnp_id(pnp->id, acpi_device_hid(acpi)); |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 243 | } |
| 244 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 245 | static int __init acpi_pnp_find_device(struct device *dev, acpi_handle * handle) |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 246 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 247 | struct device *adev; |
| 248 | struct acpi_device *acpi; |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 249 | |
| 250 | adev = bus_find_device(&acpi_bus_type, NULL, |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 251 | to_pnp_dev(dev), acpi_pnp_match); |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 252 | if (!adev) |
| 253 | return -ENODEV; |
| 254 | |
| 255 | acpi = to_acpi_device(adev); |
| 256 | *handle = acpi->handle; |
| 257 | put_device(adev); |
| 258 | return 0; |
| 259 | } |
| 260 | |
| 261 | /* complete initialization of a PNPACPI device includes having |
| 262 | * pnpdev->dev.archdata.acpi_handle point to its ACPI sibling. |
| 263 | */ |
| 264 | static struct acpi_bus_type __initdata acpi_pnp_bus = { |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 265 | .bus = &pnp_bus_type, |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 266 | .find_device = acpi_pnp_find_device, |
| 267 | }; |
| 268 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | int pnpacpi_disabled __initdata; |
Adrian Bunk | b449f63 | 2005-11-07 01:01:48 -0800 | [diff] [blame] | 270 | static int __init pnpacpi_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | { |
| 272 | if (acpi_disabled || pnpacpi_disabled) { |
Bjorn Helgaas | c865d2f | 2008-08-19 16:53:26 -0600 | [diff] [blame] | 273 | printk(KERN_INFO "pnp: PnP ACPI: disabled\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | return 0; |
| 275 | } |
Bjorn Helgaas | c865d2f | 2008-08-19 16:53:26 -0600 | [diff] [blame] | 276 | printk(KERN_INFO "pnp: PnP ACPI init\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | pnp_register_protocol(&pnpacpi_protocol); |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 278 | register_acpi_bus_type(&acpi_pnp_bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | acpi_get_devices(NULL, pnpacpi_add_device_handler, NULL, NULL); |
Bjorn Helgaas | c865d2f | 2008-08-19 16:53:26 -0600 | [diff] [blame] | 280 | printk(KERN_INFO "pnp: PnP ACPI: found %d devices\n", num); |
David Brownell | 55955aa | 2007-05-08 00:28:35 -0700 | [diff] [blame] | 281 | unregister_acpi_bus_type(&acpi_pnp_bus); |
Bjorn Helgaas | 8f81dd1 | 2007-05-08 00:35:54 -0700 | [diff] [blame] | 282 | pnp_platform_devices = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | return 0; |
| 284 | } |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 285 | |
Linus Torvalds | ed458df | 2008-10-10 08:00:17 -0700 | [diff] [blame] | 286 | fs_initcall(pnpacpi_init); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | |
| 288 | static int __init pnpacpi_setup(char *str) |
| 289 | { |
| 290 | if (str == NULL) |
| 291 | return 1; |
| 292 | if (!strncmp(str, "off", 3)) |
| 293 | pnpacpi_disabled = 1; |
| 294 | return 1; |
| 295 | } |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | __setup("pnpacpi=", pnpacpi_setup); |