Blame view
drivers/pnp/driver.c
5.02 KB
1da177e4c Linux-2.6.12-rc2 |
1 2 3 4 |
/* * driver.c - device id matching, driver model, etc. * * Copyright 2002 Adam Belay <ambx1@neo.rr.com> |
1da177e4c Linux-2.6.12-rc2 |
5 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
6 7 8 9 10 |
#include <linux/string.h> #include <linux/list.h> #include <linux/module.h> #include <linux/ctype.h> #include <linux/slab.h> |
1da177e4c Linux-2.6.12-rc2 |
11 12 13 14 15 16 |
#include <linux/pnp.h> #include "base.h" static int compare_func(const char *ida, const char *idb) { int i; |
07d4e9af1 PNP: fix up after... |
17 |
|
1da177e4c Linux-2.6.12-rc2 |
18 |
/* we only need to compare the last 4 chars */ |
9dd78466c PNP: Lindent all ... |
19 |
for (i = 3; i < 7; i++) { |
1da177e4c Linux-2.6.12-rc2 |
20 |
if (ida[i] != 'X' && |
9dd78466c PNP: Lindent all ... |
21 |
idb[i] != 'X' && toupper(ida[i]) != toupper(idb[i])) |
1da177e4c Linux-2.6.12-rc2 |
22 23 24 25 26 27 28 29 30 |
return 0; } return 1; } int compare_pnp_id(struct pnp_id *pos, const char *id) { if (!pos || !id || (strlen(id) != 7)) return 0; |
9dd78466c PNP: Lindent all ... |
31 |
if (memcmp(id, "ANYDEVS", 7) == 0) |
1da177e4c Linux-2.6.12-rc2 |
32 |
return 1; |
9dd78466c PNP: Lindent all ... |
33 34 35 |
while (pos) { if (memcmp(pos->id, id, 3) == 0) if (compare_func(pos->id, id) == 1) |
1da177e4c Linux-2.6.12-rc2 |
36 37 38 39 40 |
return 1; pos = pos->next; } return 0; } |
9dd78466c PNP: Lindent all ... |
41 42 |
static const struct pnp_device_id *match_device(struct pnp_driver *drv, struct pnp_dev *dev) |
1da177e4c Linux-2.6.12-rc2 |
43 44 |
{ const struct pnp_device_id *drv_id = drv->id_table; |
07d4e9af1 PNP: fix up after... |
45 |
|
1da177e4c Linux-2.6.12-rc2 |
46 47 48 49 50 51 52 53 54 55 56 57 58 59 |
if (!drv_id) return NULL; while (*drv_id->id) { if (compare_pnp_id(dev->id, drv_id->id)) return drv_id; drv_id++; } return NULL; } int pnp_device_attach(struct pnp_dev *pnp_dev) { spin_lock(&pnp_lock); |
9dd78466c PNP: Lindent all ... |
60 |
if (pnp_dev->status != PNP_READY) { |
1da177e4c Linux-2.6.12-rc2 |
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 |
spin_unlock(&pnp_lock); return -EBUSY; } pnp_dev->status = PNP_ATTACHED; spin_unlock(&pnp_lock); return 0; } void pnp_device_detach(struct pnp_dev *pnp_dev) { spin_lock(&pnp_lock); if (pnp_dev->status == PNP_ATTACHED) pnp_dev->status = PNP_READY; spin_unlock(&pnp_lock); pnp_disable_dev(pnp_dev); } static int pnp_device_probe(struct device *dev) { int error; struct pnp_driver *pnp_drv; struct pnp_dev *pnp_dev; const struct pnp_device_id *dev_id = NULL; pnp_dev = to_pnp_dev(dev); pnp_drv = to_pnp_driver(dev->driver); |
1da177e4c Linux-2.6.12-rc2 |
86 87 88 89 90 91 92 93 94 95 96 |
error = pnp_device_attach(pnp_dev); if (error < 0) return error; if (pnp_dev->active == 0) { if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE)) { error = pnp_activate_dev(pnp_dev); if (error < 0) return error; } } else if ((pnp_drv->flags & PNP_DRIVER_RES_DISABLE) |
9dd78466c PNP: Lindent all ... |
97 |
== PNP_DRIVER_RES_DISABLE) { |
1da177e4c Linux-2.6.12-rc2 |
98 99 100 101 102 103 104 105 106 107 |
error = pnp_disable_dev(pnp_dev); if (error < 0) return error; } error = 0; if (pnp_drv->probe) { dev_id = match_device(pnp_drv, pnp_dev); if (dev_id != NULL) error = pnp_drv->probe(pnp_dev, dev_id); } |
9dd78466c PNP: Lindent all ... |
108 |
if (error >= 0) { |
1da177e4c Linux-2.6.12-rc2 |
109 110 111 112 |
pnp_dev->driver = pnp_drv; error = 0; } else goto fail; |
a05d07816 PNP: use dev_info... |
113 114 115 |
dev_dbg(dev, "driver attached "); |
1da177e4c Linux-2.6.12-rc2 |
116 |
return error; |
1e0aa9ad7 PNP: fix up after... |
117 |
fail: |
1da177e4c Linux-2.6.12-rc2 |
118 119 120 121 122 123 |
pnp_device_detach(pnp_dev); return error; } static int pnp_device_remove(struct device *dev) { |
9dd78466c PNP: Lindent all ... |
124 125 |
struct pnp_dev *pnp_dev = to_pnp_dev(dev); struct pnp_driver *drv = pnp_dev->driver; |
1da177e4c Linux-2.6.12-rc2 |
126 127 128 129 130 131 132 133 134 135 136 137 |
if (drv) { if (drv->remove) drv->remove(pnp_dev); pnp_dev->driver = NULL; } pnp_device_detach(pnp_dev); return 0; } static int pnp_bus_match(struct device *dev, struct device_driver *drv) { |
9dd78466c PNP: Lindent all ... |
138 139 |
struct pnp_dev *pnp_dev = to_pnp_dev(dev); struct pnp_driver *pnp_drv = to_pnp_driver(drv); |
07d4e9af1 PNP: fix up after... |
140 |
|
1da177e4c Linux-2.6.12-rc2 |
141 142 143 144 |
if (match_device(pnp_drv, pnp_dev) == NULL) return 0; return 1; } |
4c98cfef2 [ALSA] PATCH] Add... |
145 146 |
static int pnp_bus_suspend(struct device *dev, pm_message_t state) { |
9dd78466c PNP: Lindent all ... |
147 148 |
struct pnp_dev *pnp_dev = to_pnp_dev(dev); struct pnp_driver *pnp_drv = pnp_dev->driver; |
68094e325 [ALSA] [PATCH] al... |
149 150 151 152 153 154 155 156 157 158 159 160 161 |
int error; if (!pnp_drv) return 0; if (pnp_drv->suspend) { error = pnp_drv->suspend(pnp_dev, state); if (error) return error; } if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE) && pnp_can_disable(pnp_dev)) { |
9dd78466c PNP: Lindent all ... |
162 163 164 |
error = pnp_stop_dev(pnp_dev); if (error) return error; |
68094e325 [ALSA] [PATCH] al... |
165 |
} |
4c98cfef2 [ALSA] PATCH] Add... |
166 |
|
fc30e68e8 ACPI, PNP: hook A... |
167 168 |
if (pnp_dev->protocol && pnp_dev->protocol->suspend) pnp_dev->protocol->suspend(pnp_dev, state); |
4c98cfef2 [ALSA] PATCH] Add... |
169 170 |
return 0; } |
68094e325 [ALSA] [PATCH] al... |
171 |
static int pnp_bus_resume(struct device *dev) |
4c98cfef2 [ALSA] PATCH] Add... |
172 |
{ |
9dd78466c PNP: Lindent all ... |
173 174 |
struct pnp_dev *pnp_dev = to_pnp_dev(dev); struct pnp_driver *pnp_drv = pnp_dev->driver; |
68094e325 [ALSA] [PATCH] al... |
175 176 177 178 |
int error; if (!pnp_drv) return 0; |
fc30e68e8 ACPI, PNP: hook A... |
179 180 |
if (pnp_dev->protocol && pnp_dev->protocol->resume) pnp_dev->protocol->resume(pnp_dev); |
68094e325 [ALSA] [PATCH] al... |
181 182 183 184 185 |
if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE)) { error = pnp_start_dev(pnp_dev); if (error) return error; } |
4c98cfef2 [ALSA] PATCH] Add... |
186 |
|
68094e325 [ALSA] [PATCH] al... |
187 188 189 190 |
if (pnp_drv->resume) return pnp_drv->resume(pnp_dev); return 0; |
4c98cfef2 [ALSA] PATCH] Add... |
191 |
} |
1da177e4c Linux-2.6.12-rc2 |
192 193 |
struct bus_type pnp_bus_type = { |
07d4e9af1 PNP: fix up after... |
194 195 196 197 |
.name = "pnp", .match = pnp_bus_match, .probe = pnp_device_probe, .remove = pnp_device_remove, |
4c98cfef2 [ALSA] PATCH] Add... |
198 |
.suspend = pnp_bus_suspend, |
07d4e9af1 PNP: fix up after... |
199 |
.resume = pnp_bus_resume, |
1da177e4c Linux-2.6.12-rc2 |
200 |
}; |
1da177e4c Linux-2.6.12-rc2 |
201 202 |
int pnp_register_driver(struct pnp_driver *drv) { |
1da177e4c Linux-2.6.12-rc2 |
203 204 205 206 |
pnp_dbg("the driver '%s' has been registered", drv->name); drv->driver.name = drv->name; drv->driver.bus = &pnp_bus_type; |
1da177e4c Linux-2.6.12-rc2 |
207 |
|
982c60944 [PATCH] pnp: PNP:... |
208 |
return driver_register(&drv->driver); |
1da177e4c Linux-2.6.12-rc2 |
209 210 211 212 213 214 215 216 217 218 219 220 |
} void pnp_unregister_driver(struct pnp_driver *drv) { driver_unregister(&drv->driver); pnp_dbg("the driver '%s' has been unregistered", drv->name); } /** * pnp_add_id - adds an EISA id to the specified device * @id: pointer to a pnp_id structure * @dev: pointer to the desired device |
1da177e4c Linux-2.6.12-rc2 |
221 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
222 223 224 |
int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev) { struct pnp_id *ptr; |
07d4e9af1 PNP: fix up after... |
225 |
|
1da177e4c Linux-2.6.12-rc2 |
226 227 228 229 230 231 232 233 234 235 236 237 238 |
id->next = NULL; ptr = dev->id; while (ptr && ptr->next) ptr = ptr->next; if (ptr) ptr->next = id; else dev->id = id; return 0; } EXPORT_SYMBOL(pnp_register_driver); EXPORT_SYMBOL(pnp_unregister_driver); |
1da177e4c Linux-2.6.12-rc2 |
239 240 |
EXPORT_SYMBOL(pnp_device_attach); EXPORT_SYMBOL(pnp_device_detach); |