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-rw-r--r--drivers/acpi/battery.c1038
1 files changed, 436 insertions, 602 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 9b2c0f74f869..681e26b56b11 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -1,6 +1,8 @@
1/* 1/*
2 * acpi_battery.c - ACPI Battery Driver ($Revision: 37 $) 2 * battery.c - ACPI Battery Driver (Revision: 2.0)
3 * 3 *
4 * Copyright (C) 2007 Alexey Starikovskiy <astarikovskiy@suse.de>
5 * Copyright (C) 2004-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com>
4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> 6 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> 7 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
6 * 8 *
@@ -27,244 +29,288 @@
27#include <linux/module.h> 29#include <linux/module.h>
28#include <linux/init.h> 30#include <linux/init.h>
29#include <linux/types.h> 31#include <linux/types.h>
32#include <linux/jiffies.h>
33
34#ifdef CONFIG_ACPI_PROCFS
30#include <linux/proc_fs.h> 35#include <linux/proc_fs.h>
31#include <linux/seq_file.h> 36#include <linux/seq_file.h>
32#include <asm/uaccess.h> 37#include <asm/uaccess.h>
38#endif
33 39
34#include <acpi/acpi_bus.h> 40#include <acpi/acpi_bus.h>
35#include <acpi/acpi_drivers.h> 41#include <acpi/acpi_drivers.h>
36 42
37#define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF 43#include <linux/power_supply.h>
38 44
39#define ACPI_BATTERY_FORMAT_BIF "NNNNNNNNNSSSS" 45#define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF
40#define ACPI_BATTERY_FORMAT_BST "NNNN"
41 46
42#define ACPI_BATTERY_COMPONENT 0x00040000 47#define ACPI_BATTERY_COMPONENT 0x00040000
43#define ACPI_BATTERY_CLASS "battery" 48#define ACPI_BATTERY_CLASS "battery"
44#define ACPI_BATTERY_DEVICE_NAME "Battery" 49#define ACPI_BATTERY_DEVICE_NAME "Battery"
45#define ACPI_BATTERY_NOTIFY_STATUS 0x80 50#define ACPI_BATTERY_NOTIFY_STATUS 0x80
46#define ACPI_BATTERY_NOTIFY_INFO 0x81 51#define ACPI_BATTERY_NOTIFY_INFO 0x81
47#define ACPI_BATTERY_UNITS_WATTS "mW"
48#define ACPI_BATTERY_UNITS_AMPS "mA"
49 52
50#define _COMPONENT ACPI_BATTERY_COMPONENT 53#define _COMPONENT ACPI_BATTERY_COMPONENT
51 54
52#define ACPI_BATTERY_UPDATE_TIME 0
53
54#define ACPI_BATTERY_NONE_UPDATE 0
55#define ACPI_BATTERY_EASY_UPDATE 1
56#define ACPI_BATTERY_INIT_UPDATE 2
57
58ACPI_MODULE_NAME("battery"); 55ACPI_MODULE_NAME("battery");
59 56
60MODULE_AUTHOR("Paul Diefenbaugh"); 57MODULE_AUTHOR("Paul Diefenbaugh");
58MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>");
61MODULE_DESCRIPTION("ACPI Battery Driver"); 59MODULE_DESCRIPTION("ACPI Battery Driver");
62MODULE_LICENSE("GPL"); 60MODULE_LICENSE("GPL");
63 61
64static unsigned int update_time = ACPI_BATTERY_UPDATE_TIME; 62static unsigned int cache_time = 1000;
65 63module_param(cache_time, uint, 0644);
66/* 0 - every time, > 0 - by update_time */ 64MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
67module_param(update_time, uint, 0644);
68 65
66#ifdef CONFIG_ACPI_PROCFS
69extern struct proc_dir_entry *acpi_lock_battery_dir(void); 67extern struct proc_dir_entry *acpi_lock_battery_dir(void);
70extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); 68extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
71 69
72static int acpi_battery_add(struct acpi_device *device); 70enum acpi_battery_files {
73static int acpi_battery_remove(struct acpi_device *device, int type); 71 info_tag = 0,
74static int acpi_battery_resume(struct acpi_device *device); 72 state_tag,
73 alarm_tag,
74 ACPI_BATTERY_NUMFILES,
75};
76
77#endif
75 78
76static const struct acpi_device_id battery_device_ids[] = { 79static const struct acpi_device_id battery_device_ids[] = {
77 {"PNP0C0A", 0}, 80 {"PNP0C0A", 0},
78 {"", 0}, 81 {"", 0},
79}; 82};
80MODULE_DEVICE_TABLE(acpi, battery_device_ids);
81
82static struct acpi_driver acpi_battery_driver = {
83 .name = "battery",
84 .class = ACPI_BATTERY_CLASS,
85 .ids = battery_device_ids,
86 .ops = {
87 .add = acpi_battery_add,
88 .resume = acpi_battery_resume,
89 .remove = acpi_battery_remove,
90 },
91};
92 83
93struct acpi_battery_state { 84MODULE_DEVICE_TABLE(acpi, battery_device_ids);
94 acpi_integer state;
95 acpi_integer present_rate;
96 acpi_integer remaining_capacity;
97 acpi_integer present_voltage;
98};
99
100struct acpi_battery_info {
101 acpi_integer power_unit;
102 acpi_integer design_capacity;
103 acpi_integer last_full_capacity;
104 acpi_integer battery_technology;
105 acpi_integer design_voltage;
106 acpi_integer design_capacity_warning;
107 acpi_integer design_capacity_low;
108 acpi_integer battery_capacity_granularity_1;
109 acpi_integer battery_capacity_granularity_2;
110 acpi_string model_number;
111 acpi_string serial_number;
112 acpi_string battery_type;
113 acpi_string oem_info;
114};
115
116enum acpi_battery_files{
117 ACPI_BATTERY_INFO = 0,
118 ACPI_BATTERY_STATE,
119 ACPI_BATTERY_ALARM,
120 ACPI_BATTERY_NUMFILES,
121};
122 85
123struct acpi_battery_flags {
124 u8 battery_present_prev;
125 u8 alarm_present;
126 u8 init_update;
127 u8 update[ACPI_BATTERY_NUMFILES];
128 u8 power_unit;
129};
130 86
131struct acpi_battery { 87struct acpi_battery {
132 struct mutex mutex; 88 struct mutex lock;
89 struct power_supply bat;
133 struct acpi_device *device; 90 struct acpi_device *device;
134 struct acpi_battery_flags flags; 91 unsigned long update_time;
135 struct acpi_buffer bif_data; 92 int current_now;
136 struct acpi_buffer bst_data; 93 int capacity_now;
137 unsigned long alarm; 94 int voltage_now;
138 unsigned long update_time[ACPI_BATTERY_NUMFILES]; 95 int design_capacity;
96 int full_charge_capacity;
97 int technology;
98 int design_voltage;
99 int design_capacity_warning;
100 int design_capacity_low;
101 int capacity_granularity_1;
102 int capacity_granularity_2;
103 int alarm;
104 char model_number[32];
105 char serial_number[32];
106 char type[32];
107 char oem_info[32];
108 int state;
109 int power_unit;
110 u8 alarm_present;
139}; 111};
140 112
113#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
114
141inline int acpi_battery_present(struct acpi_battery *battery) 115inline int acpi_battery_present(struct acpi_battery *battery)
142{ 116{
143 return battery->device->status.battery_present; 117 return battery->device->status.battery_present;
144} 118}
145inline char *acpi_battery_power_units(struct acpi_battery *battery)
146{
147 if (battery->flags.power_unit)
148 return ACPI_BATTERY_UNITS_AMPS;
149 else
150 return ACPI_BATTERY_UNITS_WATTS;
151}
152 119
153inline acpi_handle acpi_battery_handle(struct acpi_battery *battery) 120static int acpi_battery_technology(struct acpi_battery *battery)
154{ 121{
155 return battery->device->handle; 122 if (!strcasecmp("NiCd", battery->type))
123 return POWER_SUPPLY_TECHNOLOGY_NiCd;
124 if (!strcasecmp("NiMH", battery->type))
125 return POWER_SUPPLY_TECHNOLOGY_NiMH;
126 if (!strcasecmp("LION", battery->type))
127 return POWER_SUPPLY_TECHNOLOGY_LION;
128 if (!strcasecmp("LiP", battery->type))
129 return POWER_SUPPLY_TECHNOLOGY_LIPO;
130 return POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
156} 131}
157 132
158/* -------------------------------------------------------------------------- 133static int acpi_battery_get_property(struct power_supply *psy,
159 Battery Management 134 enum power_supply_property psp,
160 -------------------------------------------------------------------------- */ 135 union power_supply_propval *val)
161
162static void acpi_battery_check_result(struct acpi_battery *battery, int result)
163{ 136{
164 if (!battery) 137 struct acpi_battery *battery = to_acpi_battery(psy);
165 return;
166 138
167 if (result) { 139 if ((!acpi_battery_present(battery)) &&
168 battery->flags.init_update = 1; 140 psp != POWER_SUPPLY_PROP_PRESENT)
141 return -ENODEV;
142 switch (psp) {
143 case POWER_SUPPLY_PROP_STATUS:
144 if (battery->state & 0x01)
145 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
146 else if (battery->state & 0x02)
147 val->intval = POWER_SUPPLY_STATUS_CHARGING;
148 else if (battery->state == 0)
149 val->intval = POWER_SUPPLY_STATUS_FULL;
150 break;
151 case POWER_SUPPLY_PROP_PRESENT:
152 val->intval = acpi_battery_present(battery);
153 break;
154 case POWER_SUPPLY_PROP_TECHNOLOGY:
155 val->intval = acpi_battery_technology(battery);
156 break;
157 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
158 val->intval = battery->design_voltage * 1000;
159 break;
160 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
161 val->intval = battery->voltage_now * 1000;
162 break;
163 case POWER_SUPPLY_PROP_CURRENT_NOW:
164 val->intval = battery->current_now * 1000;
165 break;
166 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
167 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
168 val->intval = battery->design_capacity * 1000;
169 break;
170 case POWER_SUPPLY_PROP_CHARGE_FULL:
171 case POWER_SUPPLY_PROP_ENERGY_FULL:
172 val->intval = battery->full_charge_capacity * 1000;
173 break;
174 case POWER_SUPPLY_PROP_CHARGE_NOW:
175 case POWER_SUPPLY_PROP_ENERGY_NOW:
176 val->intval = battery->capacity_now * 1000;
177 break;
178 case POWER_SUPPLY_PROP_MODEL_NAME:
179 val->strval = battery->model_number;
180 break;
181 case POWER_SUPPLY_PROP_MANUFACTURER:
182 val->strval = battery->oem_info;
183 break;
184 default:
185 return -EINVAL;
169 } 186 }
187 return 0;
170} 188}
171 189
172static int acpi_battery_extract_package(struct acpi_battery *battery, 190static enum power_supply_property charge_battery_props[] = {
173 union acpi_object *package, 191 POWER_SUPPLY_PROP_STATUS,
174 struct acpi_buffer *format, 192 POWER_SUPPLY_PROP_PRESENT,
175 struct acpi_buffer *data, 193 POWER_SUPPLY_PROP_TECHNOLOGY,
176 char *package_name) 194 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
195 POWER_SUPPLY_PROP_VOLTAGE_NOW,
196 POWER_SUPPLY_PROP_CURRENT_NOW,
197 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
198 POWER_SUPPLY_PROP_CHARGE_FULL,
199 POWER_SUPPLY_PROP_CHARGE_NOW,
200 POWER_SUPPLY_PROP_MODEL_NAME,
201 POWER_SUPPLY_PROP_MANUFACTURER,
202};
203
204static enum power_supply_property energy_battery_props[] = {
205 POWER_SUPPLY_PROP_STATUS,
206 POWER_SUPPLY_PROP_PRESENT,
207 POWER_SUPPLY_PROP_TECHNOLOGY,
208 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
209 POWER_SUPPLY_PROP_VOLTAGE_NOW,
210 POWER_SUPPLY_PROP_CURRENT_NOW,
211 POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
212 POWER_SUPPLY_PROP_ENERGY_FULL,
213 POWER_SUPPLY_PROP_ENERGY_NOW,
214 POWER_SUPPLY_PROP_MODEL_NAME,
215 POWER_SUPPLY_PROP_MANUFACTURER,
216};
217
218#ifdef CONFIG_ACPI_PROCFS
219inline char *acpi_battery_units(struct acpi_battery *battery)
177{ 220{
178 acpi_status status = AE_OK; 221 return (battery->power_unit)?"mA":"mW";
179 struct acpi_buffer data_null = { 0, NULL }; 222}
223#endif
180 224
181 status = acpi_extract_package(package, format, &data_null); 225/* --------------------------------------------------------------------------
182 if (status != AE_BUFFER_OVERFLOW) { 226 Battery Management
183 ACPI_EXCEPTION((AE_INFO, status, "Extracting size %s", 227 -------------------------------------------------------------------------- */
184 package_name)); 228struct acpi_offsets {
185 return -ENODEV; 229 size_t offset; /* offset inside struct acpi_sbs_battery */
186 } 230 u8 mode; /* int or string? */
231};
187 232
188 if (data_null.length != data->length) { 233static struct acpi_offsets state_offsets[] = {
189 kfree(data->pointer); 234 {offsetof(struct acpi_battery, state), 0},
190 data->pointer = kzalloc(data_null.length, GFP_KERNEL); 235 {offsetof(struct acpi_battery, current_now), 0},
191 if (!data->pointer) { 236 {offsetof(struct acpi_battery, capacity_now), 0},
192 ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, "kzalloc()")); 237 {offsetof(struct acpi_battery, voltage_now), 0},
193 return -ENOMEM; 238};
194 }
195 data->length = data_null.length;
196 }
197 239
198 status = acpi_extract_package(package, format, data); 240static struct acpi_offsets info_offsets[] = {
199 if (ACPI_FAILURE(status)) { 241 {offsetof(struct acpi_battery, power_unit), 0},
200 ACPI_EXCEPTION((AE_INFO, status, "Extracting %s", 242 {offsetof(struct acpi_battery, design_capacity), 0},
201 package_name)); 243 {offsetof(struct acpi_battery, full_charge_capacity), 0},
202 return -ENODEV; 244 {offsetof(struct acpi_battery, technology), 0},
203 } 245 {offsetof(struct acpi_battery, design_voltage), 0},
246 {offsetof(struct acpi_battery, design_capacity_warning), 0},
247 {offsetof(struct acpi_battery, design_capacity_low), 0},
248 {offsetof(struct acpi_battery, capacity_granularity_1), 0},
249 {offsetof(struct acpi_battery, capacity_granularity_2), 0},
250 {offsetof(struct acpi_battery, model_number), 1},
251 {offsetof(struct acpi_battery, serial_number), 1},
252 {offsetof(struct acpi_battery, type), 1},
253 {offsetof(struct acpi_battery, oem_info), 1},
254};
204 255
256static int extract_package(struct acpi_battery *battery,
257 union acpi_object *package,
258 struct acpi_offsets *offsets, int num)
259{
260 int i, *x;
261 union acpi_object *element;
262 if (package->type != ACPI_TYPE_PACKAGE)
263 return -EFAULT;
264 for (i = 0; i < num; ++i) {
265 if (package->package.count <= i)
266 return -EFAULT;
267 element = &package->package.elements[i];
268 if (offsets[i].mode) {
269 if (element->type != ACPI_TYPE_STRING &&
270 element->type != ACPI_TYPE_BUFFER)
271 return -EFAULT;
272 strncpy((u8 *)battery + offsets[i].offset,
273 element->string.pointer, 32);
274 } else {
275 if (element->type != ACPI_TYPE_INTEGER)
276 return -EFAULT;
277 x = (int *)((u8 *)battery + offsets[i].offset);
278 *x = element->integer.value;
279 }
280 }
205 return 0; 281 return 0;
206} 282}
207 283
208static int acpi_battery_get_status(struct acpi_battery *battery) 284static int acpi_battery_get_status(struct acpi_battery *battery)
209{ 285{
210 int result = 0; 286 if (acpi_bus_get_status(battery->device)) {
211
212 result = acpi_bus_get_status(battery->device);
213 if (result) {
214 ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA")); 287 ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA"));
215 return -ENODEV; 288 return -ENODEV;
216 } 289 }
217 return result; 290 return 0;
218} 291}
219 292
220static int acpi_battery_get_info(struct acpi_battery *battery) 293static int acpi_battery_get_info(struct acpi_battery *battery)
221{ 294{
222 int result = 0; 295 int result = -EFAULT;
223 acpi_status status = 0; 296 acpi_status status = 0;
224 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 297 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
225 struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BIF),
226 ACPI_BATTERY_FORMAT_BIF
227 };
228 union acpi_object *package = NULL;
229 struct acpi_buffer *data = NULL;
230 struct acpi_battery_info *bif = NULL;
231
232 battery->update_time[ACPI_BATTERY_INFO] = get_seconds();
233 298
234 if (!acpi_battery_present(battery)) 299 if (!acpi_battery_present(battery))
235 return 0; 300 return 0;
301 mutex_lock(&battery->lock);
302 status = acpi_evaluate_object(battery->device->handle, "_BIF",
303 NULL, &buffer);
304 mutex_unlock(&battery->lock);
236 305
237 /* Evaluate _BIF */
238
239 status =
240 acpi_evaluate_object(acpi_battery_handle(battery), "_BIF", NULL,
241 &buffer);
242 if (ACPI_FAILURE(status)) { 306 if (ACPI_FAILURE(status)) {
243 ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF")); 307 ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF"));
244 return -ENODEV; 308 return -ENODEV;
245 } 309 }
246 310
247 package = buffer.pointer; 311 result = extract_package(battery, buffer.pointer,
248 312 info_offsets, ARRAY_SIZE(info_offsets));
249 data = &battery->bif_data;
250
251 /* Extract Package Data */
252
253 result =
254 acpi_battery_extract_package(battery, package, &format, data,
255 "_BIF");
256 if (result)
257 goto end;
258
259 end:
260
261 kfree(buffer.pointer); 313 kfree(buffer.pointer);
262
263 if (!result) {
264 bif = data->pointer;
265 battery->flags.power_unit = bif->power_unit;
266 }
267
268 return result; 314 return result;
269} 315}
270 316
@@ -273,342 +319,203 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
273 int result = 0; 319 int result = 0;
274 acpi_status status = 0; 320 acpi_status status = 0;
275 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 321 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
276 struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BST),
277 ACPI_BATTERY_FORMAT_BST
278 };
279 union acpi_object *package = NULL;
280 struct acpi_buffer *data = NULL;
281
282 battery->update_time[ACPI_BATTERY_STATE] = get_seconds();
283 322
284 if (!acpi_battery_present(battery)) 323 if (!acpi_battery_present(battery))
285 return 0; 324 return 0;
286 325
287 /* Evaluate _BST */ 326 if (battery->update_time &&
327 time_before(jiffies, battery->update_time +
328 msecs_to_jiffies(cache_time)))
329 return 0;
330
331 mutex_lock(&battery->lock);
332 status = acpi_evaluate_object(battery->device->handle, "_BST",
333 NULL, &buffer);
334 mutex_unlock(&battery->lock);
288 335
289 status =
290 acpi_evaluate_object(acpi_battery_handle(battery), "_BST", NULL,
291 &buffer);
292 if (ACPI_FAILURE(status)) { 336 if (ACPI_FAILURE(status)) {
293 ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); 337 ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST"));
294 return -ENODEV; 338 return -ENODEV;
295 } 339 }
296 340
297 package = buffer.pointer; 341 result = extract_package(battery, buffer.pointer,
298 342 state_offsets, ARRAY_SIZE(state_offsets));
299 data = &battery->bst_data; 343 battery->update_time = jiffies;
300
301 /* Extract Package Data */
302
303 result =
304 acpi_battery_extract_package(battery, package, &format, data,
305 "_BST");
306 if (result)
307 goto end;
308
309 end:
310 kfree(buffer.pointer); 344 kfree(buffer.pointer);
311
312 return result; 345 return result;
313} 346}
314 347
315static int acpi_battery_get_alarm(struct acpi_battery *battery) 348static int acpi_battery_set_alarm(struct acpi_battery *battery)
316{
317 battery->update_time[ACPI_BATTERY_ALARM] = get_seconds();
318
319 return 0;
320}
321
322static int acpi_battery_set_alarm(struct acpi_battery *battery,
323 unsigned long alarm)
324{ 349{
325 acpi_status status = 0; 350 acpi_status status = 0;
326 union acpi_object arg0 = { ACPI_TYPE_INTEGER }; 351 union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER };
327 struct acpi_object_list arg_list = { 1, &arg0 }; 352 struct acpi_object_list arg_list = { 1, &arg0 };
328 353
329 battery->update_time[ACPI_BATTERY_ALARM] = get_seconds(); 354 if (!acpi_battery_present(battery)|| !battery->alarm_present)
330
331 if (!acpi_battery_present(battery))
332 return -ENODEV; 355 return -ENODEV;
333 356
334 if (!battery->flags.alarm_present) 357 arg0.integer.value = battery->alarm;
335 return -ENODEV;
336
337 arg0.integer.value = alarm;
338 358
339 status = 359 mutex_lock(&battery->lock);
340 acpi_evaluate_object(acpi_battery_handle(battery), "_BTP", 360 status = acpi_evaluate_object(battery->device->handle, "_BTP",
341 &arg_list, NULL); 361 &arg_list, NULL);
362 mutex_unlock(&battery->lock);
363
342 if (ACPI_FAILURE(status)) 364 if (ACPI_FAILURE(status))
343 return -ENODEV; 365 return -ENODEV;
344 366
345 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", (u32) alarm)); 367 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", battery->alarm));
346
347 battery->alarm = alarm;
348
349 return 0; 368 return 0;
350} 369}
351 370
352static int acpi_battery_init_alarm(struct acpi_battery *battery) 371static int acpi_battery_init_alarm(struct acpi_battery *battery)
353{ 372{
354 int result = 0;
355 acpi_status status = AE_OK; 373 acpi_status status = AE_OK;
356 acpi_handle handle = NULL; 374 acpi_handle handle = NULL;
357 struct acpi_battery_info *bif = battery->bif_data.pointer;
358 unsigned long alarm = battery->alarm;
359 375
360 /* See if alarms are supported, and if so, set default */ 376 /* See if alarms are supported, and if so, set default */
361 377 status = acpi_get_handle(battery->device->handle, "_BTP", &handle);
362 status = acpi_get_handle(acpi_battery_handle(battery), "_BTP", &handle); 378 if (ACPI_FAILURE(status)) {
363 if (ACPI_SUCCESS(status)) { 379 battery->alarm_present = 0;
364 battery->flags.alarm_present = 1; 380 return 0;
365 if (!alarm && bif) {
366 alarm = bif->design_capacity_warning;
367 }
368 result = acpi_battery_set_alarm(battery, alarm);
369 if (result)
370 goto end;
371 } else {
372 battery->flags.alarm_present = 0;
373 } 381 }
374 382 battery->alarm_present = 1;
375 end: 383 if (!battery->alarm)
376 384 battery->alarm = battery->design_capacity_warning;
377 return result; 385 return acpi_battery_set_alarm(battery);
378} 386}
379 387
380static int acpi_battery_init_update(struct acpi_battery *battery) 388static int acpi_battery_update(struct acpi_battery *battery)
381{ 389{
382 int result = 0; 390 int saved_present = acpi_battery_present(battery);
383 391 int result = acpi_battery_get_status(battery);
384 result = acpi_battery_get_status(battery); 392 if (result || !acpi_battery_present(battery))
385 if (result)
386 return result; 393 return result;
387 394 if (saved_present != acpi_battery_present(battery) ||
388 battery->flags.battery_present_prev = acpi_battery_present(battery); 395 !battery->update_time) {
389 396 battery->update_time = 0;
390 if (acpi_battery_present(battery)) {
391 result = acpi_battery_get_info(battery); 397 result = acpi_battery_get_info(battery);
392 if (result) 398 if (result)
393 return result; 399 return result;
394 result = acpi_battery_get_state(battery); 400 if (battery->power_unit) {
395 if (result) 401 battery->bat.properties = charge_battery_props;
396 return result; 402 battery->bat.num_properties =
397 403 ARRAY_SIZE(charge_battery_props);
398 acpi_battery_init_alarm(battery);
399 }
400
401 return result;
402}
403
404static int acpi_battery_update(struct acpi_battery *battery,
405 int update, int *update_result_ptr)
406{
407 int result = 0;
408 int update_result = ACPI_BATTERY_NONE_UPDATE;
409
410 if (!acpi_battery_present(battery)) {
411 update = 1;
412 }
413
414 if (battery->flags.init_update) {
415 result = acpi_battery_init_update(battery);
416 if (result)
417 goto end;
418 update_result = ACPI_BATTERY_INIT_UPDATE;
419 } else if (update) {
420 result = acpi_battery_get_status(battery);
421 if (result)
422 goto end;
423 if ((!battery->flags.battery_present_prev & acpi_battery_present(battery))
424 || (battery->flags.battery_present_prev & !acpi_battery_present(battery))) {
425 result = acpi_battery_init_update(battery);
426 if (result)
427 goto end;
428 update_result = ACPI_BATTERY_INIT_UPDATE;
429 } else { 404 } else {
430 update_result = ACPI_BATTERY_EASY_UPDATE; 405 battery->bat.properties = energy_battery_props;
406 battery->bat.num_properties =
407 ARRAY_SIZE(energy_battery_props);
431 } 408 }
409 acpi_battery_init_alarm(battery);
432 } 410 }
433 411 return acpi_battery_get_state(battery);
434 end:
435
436 battery->flags.init_update = (result != 0);
437
438 *update_result_ptr = update_result;
439
440 return result;
441}
442
443static void acpi_battery_notify_update(struct acpi_battery *battery)
444{
445 acpi_battery_get_status(battery);
446
447 if (battery->flags.init_update) {
448 return;
449 }
450
451 if ((!battery->flags.battery_present_prev &
452 acpi_battery_present(battery)) ||
453 (battery->flags.battery_present_prev &
454 !acpi_battery_present(battery))) {
455 battery->flags.init_update = 1;
456 } else {
457 battery->flags.update[ACPI_BATTERY_INFO] = 1;
458 battery->flags.update[ACPI_BATTERY_STATE] = 1;
459 battery->flags.update[ACPI_BATTERY_ALARM] = 1;
460 }
461} 412}
462 413
463/* -------------------------------------------------------------------------- 414/* --------------------------------------------------------------------------
464 FS Interface (/proc) 415 FS Interface (/proc)
465 -------------------------------------------------------------------------- */ 416 -------------------------------------------------------------------------- */
466 417
418#ifdef CONFIG_ACPI_PROCFS
467static struct proc_dir_entry *acpi_battery_dir; 419static struct proc_dir_entry *acpi_battery_dir;
468 420
469static int acpi_battery_print_info(struct seq_file *seq, int result) 421static int acpi_battery_print_info(struct seq_file *seq, int result)
470{ 422{
471 struct acpi_battery *battery = seq->private; 423 struct acpi_battery *battery = seq->private;
472 struct acpi_battery_info *bif = NULL;
473 char *units = "?";
474 424
475 if (result) 425 if (result)
476 goto end; 426 goto end;
477 427
478 if (acpi_battery_present(battery)) 428 seq_printf(seq, "present: %s\n",
479 seq_printf(seq, "present: yes\n"); 429 acpi_battery_present(battery)?"yes":"no");
480 else { 430 if (!acpi_battery_present(battery))
481 seq_printf(seq, "present: no\n");
482 goto end;
483 }
484
485 bif = battery->bif_data.pointer;
486 if (!bif) {
487 ACPI_EXCEPTION((AE_INFO, AE_ERROR, "BIF buffer is NULL"));
488 result = -ENODEV;
489 goto end; 431 goto end;
490 } 432 if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
491
492 /* Battery Units */
493
494 units = acpi_battery_power_units(battery);
495
496 if (bif->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
497 seq_printf(seq, "design capacity: unknown\n"); 433 seq_printf(seq, "design capacity: unknown\n");
498 else 434 else
499 seq_printf(seq, "design capacity: %d %sh\n", 435 seq_printf(seq, "design capacity: %d %sh\n",
500 (u32) bif->design_capacity, units); 436 battery->design_capacity,
437 acpi_battery_units(battery));
501 438
502 if (bif->last_full_capacity == ACPI_BATTERY_VALUE_UNKNOWN) 439 if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
503 seq_printf(seq, "last full capacity: unknown\n"); 440 seq_printf(seq, "last full capacity: unknown\n");
504 else 441 else
505 seq_printf(seq, "last full capacity: %d %sh\n", 442 seq_printf(seq, "last full capacity: %d %sh\n",
506 (u32) bif->last_full_capacity, units); 443 battery->full_charge_capacity,
444 acpi_battery_units(battery));
507 445
508 switch ((u32) bif->battery_technology) { 446 seq_printf(seq, "battery technology: %srechargeable\n",
509 case 0: 447 (!battery->technology)?"non-":"");
510 seq_printf(seq, "battery technology: non-rechargeable\n");
511 break;
512 case 1:
513 seq_printf(seq, "battery technology: rechargeable\n");
514 break;
515 default:
516 seq_printf(seq, "battery technology: unknown\n");
517 break;
518 }
519 448
520 if (bif->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) 449 if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN)
521 seq_printf(seq, "design voltage: unknown\n"); 450 seq_printf(seq, "design voltage: unknown\n");
522 else 451 else
523 seq_printf(seq, "design voltage: %d mV\n", 452 seq_printf(seq, "design voltage: %d mV\n",
524 (u32) bif->design_voltage); 453 battery->design_voltage);
525 seq_printf(seq, "design capacity warning: %d %sh\n", 454 seq_printf(seq, "design capacity warning: %d %sh\n",
526 (u32) bif->design_capacity_warning, units); 455 battery->design_capacity_warning,
456 acpi_battery_units(battery));
527 seq_printf(seq, "design capacity low: %d %sh\n", 457 seq_printf(seq, "design capacity low: %d %sh\n",
528 (u32) bif->design_capacity_low, units); 458 battery->design_capacity_low,
459 acpi_battery_units(battery));
529 seq_printf(seq, "capacity granularity 1: %d %sh\n", 460 seq_printf(seq, "capacity granularity 1: %d %sh\n",
530 (u32) bif->battery_capacity_granularity_1, units); 461 battery->capacity_granularity_1,
462 acpi_battery_units(battery));
531 seq_printf(seq, "capacity granularity 2: %d %sh\n", 463 seq_printf(seq, "capacity granularity 2: %d %sh\n",
532 (u32) bif->battery_capacity_granularity_2, units); 464 battery->capacity_granularity_2,
533 seq_printf(seq, "model number: %s\n", bif->model_number); 465 acpi_battery_units(battery));
534 seq_printf(seq, "serial number: %s\n", bif->serial_number); 466 seq_printf(seq, "model number: %s\n", battery->model_number);
535 seq_printf(seq, "battery type: %s\n", bif->battery_type); 467 seq_printf(seq, "serial number: %s\n", battery->serial_number);
536 seq_printf(seq, "OEM info: %s\n", bif->oem_info); 468 seq_printf(seq, "battery type: %s\n", battery->type);
537 469 seq_printf(seq, "OEM info: %s\n", battery->oem_info);
538 end: 470 end:
539
540 if (result) 471 if (result)
541 seq_printf(seq, "ERROR: Unable to read battery info\n"); 472 seq_printf(seq, "ERROR: Unable to read battery info\n");
542
543 return result; 473 return result;
544} 474}
545 475
546static int acpi_battery_print_state(struct seq_file *seq, int result) 476static int acpi_battery_print_state(struct seq_file *seq, int result)
547{ 477{
548 struct acpi_battery *battery = seq->private; 478 struct acpi_battery *battery = seq->private;
549 struct acpi_battery_state *bst = NULL;
550 char *units = "?";
551 479
552 if (result) 480 if (result)
553 goto end; 481 goto end;
554 482
555 if (acpi_battery_present(battery)) 483 seq_printf(seq, "present: %s\n",
556 seq_printf(seq, "present: yes\n"); 484 acpi_battery_present(battery)?"yes":"no");
557 else { 485 if (!acpi_battery_present(battery))
558 seq_printf(seq, "present: no\n");
559 goto end;
560 }
561
562 bst = battery->bst_data.pointer;
563 if (!bst) {
564 ACPI_EXCEPTION((AE_INFO, AE_ERROR, "BST buffer is NULL"));
565 result = -ENODEV;
566 goto end; 486 goto end;
567 }
568
569 /* Battery Units */
570
571 units = acpi_battery_power_units(battery);
572
573 if (!(bst->state & 0x04))
574 seq_printf(seq, "capacity state: ok\n");
575 else
576 seq_printf(seq, "capacity state: critical\n");
577 487
578 if ((bst->state & 0x01) && (bst->state & 0x02)) { 488 seq_printf(seq, "capacity state: %s\n",
489 (battery->state & 0x04)?"critical":"ok");
490 if ((battery->state & 0x01) && (battery->state & 0x02))
579 seq_printf(seq, 491 seq_printf(seq,
580 "charging state: charging/discharging\n"); 492 "charging state: charging/discharging\n");
581 } else if (bst->state & 0x01) 493 else if (battery->state & 0x01)
582 seq_printf(seq, "charging state: discharging\n"); 494 seq_printf(seq, "charging state: discharging\n");
583 else if (bst->state & 0x02) 495 else if (battery->state & 0x02)
584 seq_printf(seq, "charging state: charging\n"); 496 seq_printf(seq, "charging state: charging\n");
585 else { 497 else
586 seq_printf(seq, "charging state: charged\n"); 498 seq_printf(seq, "charging state: charged\n");
587 }
588 499
589 if (bst->present_rate == ACPI_BATTERY_VALUE_UNKNOWN) 500 if (battery->current_now == ACPI_BATTERY_VALUE_UNKNOWN)
590 seq_printf(seq, "present rate: unknown\n"); 501 seq_printf(seq, "present rate: unknown\n");
591 else 502 else
592 seq_printf(seq, "present rate: %d %s\n", 503 seq_printf(seq, "present rate: %d %s\n",
593 (u32) bst->present_rate, units); 504 battery->current_now, acpi_battery_units(battery));
594 505
595 if (bst->remaining_capacity == ACPI_BATTERY_VALUE_UNKNOWN) 506 if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN)
596 seq_printf(seq, "remaining capacity: unknown\n"); 507 seq_printf(seq, "remaining capacity: unknown\n");
597 else 508 else
598 seq_printf(seq, "remaining capacity: %d %sh\n", 509 seq_printf(seq, "remaining capacity: %d %sh\n",
599 (u32) bst->remaining_capacity, units); 510 battery->capacity_now, acpi_battery_units(battery));
600 511 if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN)
601 if (bst->present_voltage == ACPI_BATTERY_VALUE_UNKNOWN)
602 seq_printf(seq, "present voltage: unknown\n"); 512 seq_printf(seq, "present voltage: unknown\n");
603 else 513 else
604 seq_printf(seq, "present voltage: %d mV\n", 514 seq_printf(seq, "present voltage: %d mV\n",
605 (u32) bst->present_voltage); 515 battery->voltage_now);
606
607 end: 516 end:
608 517 if (result)
609 if (result) {
610 seq_printf(seq, "ERROR: Unable to read battery state\n"); 518 seq_printf(seq, "ERROR: Unable to read battery state\n");
611 }
612 519
613 return result; 520 return result;
614} 521}
@@ -616,7 +523,6 @@ static int acpi_battery_print_state(struct seq_file *seq, int result)
616static int acpi_battery_print_alarm(struct seq_file *seq, int result) 523static int acpi_battery_print_alarm(struct seq_file *seq, int result)
617{ 524{
618 struct acpi_battery *battery = seq->private; 525 struct acpi_battery *battery = seq->private;
619 char *units = "?";
620 526
621 if (result) 527 if (result)
622 goto end; 528 goto end;
@@ -625,189 +531,121 @@ static int acpi_battery_print_alarm(struct seq_file *seq, int result)
625 seq_printf(seq, "present: no\n"); 531 seq_printf(seq, "present: no\n");
626 goto end; 532 goto end;
627 } 533 }
628
629 /* Battery Units */
630
631 units = acpi_battery_power_units(battery);
632
633 seq_printf(seq, "alarm: "); 534 seq_printf(seq, "alarm: ");
634 if (!battery->alarm) 535 if (!battery->alarm)
635 seq_printf(seq, "unsupported\n"); 536 seq_printf(seq, "unsupported\n");
636 else 537 else
637 seq_printf(seq, "%lu %sh\n", battery->alarm, units); 538 seq_printf(seq, "%u %sh\n", battery->alarm,
638 539 acpi_battery_units(battery));
639 end: 540 end:
640
641 if (result) 541 if (result)
642 seq_printf(seq, "ERROR: Unable to read battery alarm\n"); 542 seq_printf(seq, "ERROR: Unable to read battery alarm\n");
643
644 return result; 543 return result;
645} 544}
646 545
647static ssize_t 546static ssize_t acpi_battery_write_alarm(struct file *file,
648acpi_battery_write_alarm(struct file *file, 547 const char __user * buffer,
649 const char __user * buffer, 548 size_t count, loff_t * ppos)
650 size_t count, loff_t * ppos)
651{ 549{
652 int result = 0; 550 int result = 0;
653 char alarm_string[12] = { '\0' }; 551 char alarm_string[12] = { '\0' };
654 struct seq_file *m = file->private_data; 552 struct seq_file *m = file->private_data;
655 struct acpi_battery *battery = m->private; 553 struct acpi_battery *battery = m->private;
656 int update_result = ACPI_BATTERY_NONE_UPDATE;
657 554
658 if (!battery || (count > sizeof(alarm_string) - 1)) 555 if (!battery || (count > sizeof(alarm_string) - 1))
659 return -EINVAL; 556 return -EINVAL;
660
661 mutex_lock(&battery->mutex);
662
663 result = acpi_battery_update(battery, 1, &update_result);
664 if (result) { 557 if (result) {
665 result = -ENODEV; 558 result = -ENODEV;
666 goto end; 559 goto end;
667 } 560 }
668
669 if (!acpi_battery_present(battery)) { 561 if (!acpi_battery_present(battery)) {
670 result = -ENODEV; 562 result = -ENODEV;
671 goto end; 563 goto end;
672 } 564 }
673
674 if (copy_from_user(alarm_string, buffer, count)) { 565 if (copy_from_user(alarm_string, buffer, count)) {
675 result = -EFAULT; 566 result = -EFAULT;
676 goto end; 567 goto end;
677 } 568 }
678
679 alarm_string[count] = '\0'; 569 alarm_string[count] = '\0';
680 570 battery->alarm = simple_strtol(alarm_string, NULL, 0);
681 result = acpi_battery_set_alarm(battery, 571 result = acpi_battery_set_alarm(battery);
682 simple_strtoul(alarm_string, NULL, 0));
683 if (result)
684 goto end;
685
686 end: 572 end:
687
688 acpi_battery_check_result(battery, result);
689
690 if (!result) 573 if (!result)
691 result = count; 574 return count;
692
693 mutex_unlock(&battery->mutex);
694
695 return result; 575 return result;
696} 576}
697 577
698typedef int(*print_func)(struct seq_file *seq, int result); 578typedef int(*print_func)(struct seq_file *seq, int result);
699typedef int(*get_func)(struct acpi_battery *battery); 579
700 580static print_func acpi_print_funcs[ACPI_BATTERY_NUMFILES] = {
701static struct acpi_read_mux { 581 acpi_battery_print_info,
702 print_func print; 582 acpi_battery_print_state,
703 get_func get; 583 acpi_battery_print_alarm,
704} acpi_read_funcs[ACPI_BATTERY_NUMFILES] = {
705 {.get = acpi_battery_get_info, .print = acpi_battery_print_info},
706 {.get = acpi_battery_get_state, .print = acpi_battery_print_state},
707 {.get = acpi_battery_get_alarm, .print = acpi_battery_print_alarm},
708}; 584};
709 585
710static int acpi_battery_read(int fid, struct seq_file *seq) 586static int acpi_battery_read(int fid, struct seq_file *seq)
711{ 587{
712 struct acpi_battery *battery = seq->private; 588 struct acpi_battery *battery = seq->private;
713 int result = 0; 589 int result = acpi_battery_update(battery);
714 int update_result = ACPI_BATTERY_NONE_UPDATE; 590 return acpi_print_funcs[fid](seq, result);
715 int update = 0; 591}
716 592
717 mutex_lock(&battery->mutex); 593#define DECLARE_FILE_FUNCTIONS(_name) \
718 594static int acpi_battery_read_##_name(struct seq_file *seq, void *offset) \
719 update = (get_seconds() - battery->update_time[fid] >= update_time); 595{ \
720 update = (update | battery->flags.update[fid]); 596 return acpi_battery_read(_name##_tag, seq); \
721 597} \
722 result = acpi_battery_update(battery, update, &update_result); 598static int acpi_battery_##_name##_open_fs(struct inode *inode, struct file *file) \
723 if (result) 599{ \
724 goto end; 600 return single_open(file, acpi_battery_read_##_name, PDE(inode)->data); \
725 601}
726 if (update_result == ACPI_BATTERY_EASY_UPDATE) { 602
727 result = acpi_read_funcs[fid].get(battery); 603DECLARE_FILE_FUNCTIONS(info);
728 if (result) 604DECLARE_FILE_FUNCTIONS(state);
729 goto end; 605DECLARE_FILE_FUNCTIONS(alarm);
606
607#undef DECLARE_FILE_FUNCTIONS
608
609#define FILE_DESCRIPTION_RO(_name) \
610 { \
611 .name = __stringify(_name), \
612 .mode = S_IRUGO, \
613 .ops = { \
614 .open = acpi_battery_##_name##_open_fs, \
615 .read = seq_read, \
616 .llseek = seq_lseek, \
617 .release = single_release, \
618 .owner = THIS_MODULE, \
619 }, \
620 }
621
622#define FILE_DESCRIPTION_RW(_name) \
623 { \
624 .name = __stringify(_name), \
625 .mode = S_IFREG | S_IRUGO | S_IWUSR, \
626 .ops = { \
627 .open = acpi_battery_##_name##_open_fs, \
628 .read = seq_read, \
629 .llseek = seq_lseek, \
630 .write = acpi_battery_write_##_name, \
631 .release = single_release, \
632 .owner = THIS_MODULE, \
633 }, \
730 } 634 }
731 635
732 end:
733 result = acpi_read_funcs[fid].print(seq, result);
734 acpi_battery_check_result(battery, result);
735 battery->flags.update[fid] = result;
736 mutex_unlock(&battery->mutex);
737 return result;
738}
739
740static int acpi_battery_read_info(struct seq_file *seq, void *offset)
741{
742 return acpi_battery_read(ACPI_BATTERY_INFO, seq);
743}
744
745static int acpi_battery_read_state(struct seq_file *seq, void *offset)
746{
747 return acpi_battery_read(ACPI_BATTERY_STATE, seq);
748}
749
750static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
751{
752 return acpi_battery_read(ACPI_BATTERY_ALARM, seq);
753}
754
755static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
756{
757 return single_open(file, acpi_battery_read_info, PDE(inode)->data);
758}
759
760static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
761{
762 return single_open(file, acpi_battery_read_state, PDE(inode)->data);
763}
764
765static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
766{
767 return single_open(file, acpi_battery_read_alarm, PDE(inode)->data);
768}
769
770static struct battery_file { 636static struct battery_file {
771 struct file_operations ops; 637 struct file_operations ops;
772 mode_t mode; 638 mode_t mode;
773 char *name; 639 char *name;
774} acpi_battery_file[] = { 640} acpi_battery_file[] = {
775 { 641 FILE_DESCRIPTION_RO(info),
776 .name = "info", 642 FILE_DESCRIPTION_RO(state),
777 .mode = S_IRUGO, 643 FILE_DESCRIPTION_RW(alarm),
778 .ops = {
779 .open = acpi_battery_info_open_fs,
780 .read = seq_read,
781 .llseek = seq_lseek,
782 .release = single_release,
783 .owner = THIS_MODULE,
784 },
785 },
786 {
787 .name = "state",
788 .mode = S_IRUGO,
789 .ops = {
790 .open = acpi_battery_state_open_fs,
791 .read = seq_read,
792 .llseek = seq_lseek,
793 .release = single_release,
794 .owner = THIS_MODULE,
795 },
796 },
797 {
798 .name = "alarm",
799 .mode = S_IFREG | S_IRUGO | S_IWUSR,
800 .ops = {
801 .open = acpi_battery_alarm_open_fs,
802 .read = seq_read,
803 .write = acpi_battery_write_alarm,
804 .llseek = seq_lseek,
805 .release = single_release,
806 .owner = THIS_MODULE,
807 },
808 },
809}; 644};
810 645
646#undef FILE_DESCRIPTION_RO
647#undef FILE_DESCRIPTION_RW
648
811static int acpi_battery_add_fs(struct acpi_device *device) 649static int acpi_battery_add_fs(struct acpi_device *device)
812{ 650{
813 struct proc_dir_entry *entry = NULL; 651 struct proc_dir_entry *entry = NULL;
@@ -832,25 +670,51 @@ static int acpi_battery_add_fs(struct acpi_device *device)
832 entry->owner = THIS_MODULE; 670 entry->owner = THIS_MODULE;
833 } 671 }
834 } 672 }
835
836 return 0; 673 return 0;
837} 674}
838 675
839static int acpi_battery_remove_fs(struct acpi_device *device) 676static void acpi_battery_remove_fs(struct acpi_device *device)
840{ 677{
841 int i; 678 int i;
842 if (acpi_device_dir(device)) { 679 if (!acpi_device_dir(device))
843 for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) { 680 return;
844 remove_proc_entry(acpi_battery_file[i].name, 681 for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i)
682 remove_proc_entry(acpi_battery_file[i].name,
845 acpi_device_dir(device)); 683 acpi_device_dir(device));
846 }
847 remove_proc_entry(acpi_device_bid(device), acpi_battery_dir);
848 acpi_device_dir(device) = NULL;
849 }
850 684
851 return 0; 685 remove_proc_entry(acpi_device_bid(device), acpi_battery_dir);
686 acpi_device_dir(device) = NULL;
687}
688
689#endif
690
691static ssize_t acpi_battery_alarm_show(struct device *dev,
692 struct device_attribute *attr,
693 char *buf)
694{
695 struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
696 return sprintf(buf, "%d\n", battery->alarm * 1000);
697}
698
699static ssize_t acpi_battery_alarm_store(struct device *dev,
700 struct device_attribute *attr,
701 const char *buf, size_t count)
702{
703 unsigned long x;
704 struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
705 if (sscanf(buf, "%ld\n", &x) == 1)
706 battery->alarm = x/1000;
707 if (acpi_battery_present(battery))
708 acpi_battery_set_alarm(battery);
709 return count;
852} 710}
853 711
712static struct device_attribute alarm_attr = {
713 .attr = {.name = "alarm", .mode = 0644, .owner = THIS_MODULE},
714 .show = acpi_battery_alarm_show,
715 .store = acpi_battery_alarm_store,
716};
717
854/* -------------------------------------------------------------------------- 718/* --------------------------------------------------------------------------
855 Driver Interface 719 Driver Interface
856 -------------------------------------------------------------------------- */ 720 -------------------------------------------------------------------------- */
@@ -858,33 +722,17 @@ static int acpi_battery_remove_fs(struct acpi_device *device)
858static void acpi_battery_notify(acpi_handle handle, u32 event, void *data) 722static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
859{ 723{
860 struct acpi_battery *battery = data; 724 struct acpi_battery *battery = data;
861 struct acpi_device *device = NULL; 725 struct acpi_device *device;
862
863 if (!battery) 726 if (!battery)
864 return; 727 return;
865
866 device = battery->device; 728 device = battery->device;
867 729 acpi_battery_update(battery);
868 switch (event) { 730 acpi_bus_generate_proc_event(device, event,
869 case ACPI_BATTERY_NOTIFY_STATUS: 731 acpi_battery_present(battery));
870 case ACPI_BATTERY_NOTIFY_INFO: 732 acpi_bus_generate_netlink_event(device->pnp.device_class,
871 case ACPI_NOTIFY_BUS_CHECK: 733 device->dev.bus_id, event,
872 case ACPI_NOTIFY_DEVICE_CHECK:
873 device = battery->device;
874 acpi_battery_notify_update(battery);
875 acpi_bus_generate_proc_event(device, event,
876 acpi_battery_present(battery)); 734 acpi_battery_present(battery));
877 acpi_bus_generate_netlink_event(device->pnp.device_class, 735 kobject_uevent(&battery->bat.dev->kobj, KOBJ_CHANGE);
878 device->dev.bus_id, event,
879 acpi_battery_present(battery));
880 break;
881 default:
882 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
883 "Unsupported event [0x%x]\n", event));
884 break;
885 }
886
887 return;
888} 736}
889 737
890static int acpi_battery_add(struct acpi_device *device) 738static int acpi_battery_add(struct acpi_device *device)
@@ -892,33 +740,27 @@ static int acpi_battery_add(struct acpi_device *device)
892 int result = 0; 740 int result = 0;
893 acpi_status status = 0; 741 acpi_status status = 0;
894 struct acpi_battery *battery = NULL; 742 struct acpi_battery *battery = NULL;
895
896 if (!device) 743 if (!device)
897 return -EINVAL; 744 return -EINVAL;
898
899 battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL); 745 battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
900 if (!battery) 746 if (!battery)
901 return -ENOMEM; 747 return -ENOMEM;
902
903 mutex_init(&battery->mutex);
904
905 mutex_lock(&battery->mutex);
906
907 battery->device = device; 748 battery->device = device;
908 strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); 749 strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
909 strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); 750 strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
910 acpi_driver_data(device) = battery; 751 acpi_driver_data(device) = battery;
911 752 mutex_init(&battery->lock);
912 result = acpi_battery_get_status(battery); 753 acpi_battery_update(battery);
913 if (result) 754#ifdef CONFIG_ACPI_PROCFS
914 goto end;
915
916 battery->flags.init_update = 1;
917
918 result = acpi_battery_add_fs(device); 755 result = acpi_battery_add_fs(device);
919 if (result) 756 if (result)
920 goto end; 757 goto end;
921 758#endif
759 battery->bat.name = acpi_device_bid(device);
760 battery->bat.type = POWER_SUPPLY_TYPE_BATTERY;
761 battery->bat.get_property = acpi_battery_get_property;
762 result = power_supply_register(&battery->device->dev, &battery->bat);
763 result = device_create_file(battery->bat.dev, &alarm_attr);
922 status = acpi_install_notify_handler(device->handle, 764 status = acpi_install_notify_handler(device->handle,
923 ACPI_ALL_NOTIFY, 765 ACPI_ALL_NOTIFY,
924 acpi_battery_notify, battery); 766 acpi_battery_notify, battery);
@@ -927,20 +769,16 @@ static int acpi_battery_add(struct acpi_device *device)
927 result = -ENODEV; 769 result = -ENODEV;
928 goto end; 770 goto end;
929 } 771 }
930
931 printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n", 772 printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n",
932 ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), 773 ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device),
933 device->status.battery_present ? "present" : "absent"); 774 device->status.battery_present ? "present" : "absent");
934
935 end: 775 end:
936
937 if (result) { 776 if (result) {
777#ifdef CONFIG_ACPI_PROCFS
938 acpi_battery_remove_fs(device); 778 acpi_battery_remove_fs(device);
779#endif
939 kfree(battery); 780 kfree(battery);
940 } 781 }
941
942 mutex_unlock(&battery->mutex);
943
944 return result; 782 return result;
945} 783}
946 784
@@ -951,27 +789,19 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
951 789
952 if (!device || !acpi_driver_data(device)) 790 if (!device || !acpi_driver_data(device))
953 return -EINVAL; 791 return -EINVAL;
954
955 battery = acpi_driver_data(device); 792 battery = acpi_driver_data(device);
956
957 mutex_lock(&battery->mutex);
958
959 status = acpi_remove_notify_handler(device->handle, 793 status = acpi_remove_notify_handler(device->handle,
960 ACPI_ALL_NOTIFY, 794 ACPI_ALL_NOTIFY,
961 acpi_battery_notify); 795 acpi_battery_notify);
962 796#ifdef CONFIG_ACPI_PROCFS
963 acpi_battery_remove_fs(device); 797 acpi_battery_remove_fs(device);
964 798#endif
965 kfree(battery->bif_data.pointer); 799 if (battery->bat.dev) {
966 800 device_remove_file(battery->bat.dev, &alarm_attr);
967 kfree(battery->bst_data.pointer); 801 power_supply_unregister(&battery->bat);
968 802 }
969 mutex_unlock(&battery->mutex); 803 mutex_destroy(&battery->lock);
970
971 mutex_destroy(&battery->mutex);
972
973 kfree(battery); 804 kfree(battery);
974
975 return 0; 805 return 0;
976} 806}
977 807
@@ -979,44 +809,48 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
979static int acpi_battery_resume(struct acpi_device *device) 809static int acpi_battery_resume(struct acpi_device *device)
980{ 810{
981 struct acpi_battery *battery; 811 struct acpi_battery *battery;
982
983 if (!device) 812 if (!device)
984 return -EINVAL; 813 return -EINVAL;
985 814 battery = acpi_driver_data(device);
986 battery = device->driver_data; 815 battery->update_time = 0;
987
988 battery->flags.init_update = 1;
989
990 return 0; 816 return 0;
991} 817}
992 818
819static struct acpi_driver acpi_battery_driver = {
820 .name = "battery",
821 .class = ACPI_BATTERY_CLASS,
822 .ids = battery_device_ids,
823 .ops = {
824 .add = acpi_battery_add,
825 .resume = acpi_battery_resume,
826 .remove = acpi_battery_remove,
827 },
828};
829
993static int __init acpi_battery_init(void) 830static int __init acpi_battery_init(void)
994{ 831{
995 int result;
996
997 if (acpi_disabled) 832 if (acpi_disabled)
998 return -ENODEV; 833 return -ENODEV;
999 834#ifdef CONFIG_ACPI_PROCFS
1000 acpi_battery_dir = acpi_lock_battery_dir(); 835 acpi_battery_dir = acpi_lock_battery_dir();
1001 if (!acpi_battery_dir) 836 if (!acpi_battery_dir)
1002 return -ENODEV; 837 return -ENODEV;
1003 838#endif
1004 result = acpi_bus_register_driver(&acpi_battery_driver); 839 if (acpi_bus_register_driver(&acpi_battery_driver) < 0) {
1005 if (result < 0) { 840#ifdef CONFIG_ACPI_PROCFS
1006 acpi_unlock_battery_dir(acpi_battery_dir); 841 acpi_unlock_battery_dir(acpi_battery_dir);
842#endif
1007 return -ENODEV; 843 return -ENODEV;
1008 } 844 }
1009
1010 return 0; 845 return 0;
1011} 846}
1012 847
1013static void __exit acpi_battery_exit(void) 848static void __exit acpi_battery_exit(void)
1014{ 849{
1015 acpi_bus_unregister_driver(&acpi_battery_driver); 850 acpi_bus_unregister_driver(&acpi_battery_driver);
1016 851#ifdef CONFIG_ACPI_PROCFS
1017 acpi_unlock_battery_dir(acpi_battery_dir); 852 acpi_unlock_battery_dir(acpi_battery_dir);
1018 853#endif
1019 return;
1020} 854}
1021 855
1022module_init(acpi_battery_init); 856module_init(acpi_battery_init);
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-30 03:31:42 -0400