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path: root/drivers/acpi/ec.c
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-rw-r--r--drivers/acpi/ec.c291
1 files changed, 148 insertions, 143 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 3758b558d2b5..79b09d76c180 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -60,20 +60,20 @@ ACPI_MODULE_NAME("acpi_ec")
60#define ACPI_EC_BURST_ENABLE 0x82 60#define ACPI_EC_BURST_ENABLE 0x82
61#define ACPI_EC_BURST_DISABLE 0x83 61#define ACPI_EC_BURST_DISABLE 0x83
62#define ACPI_EC_COMMAND_QUERY 0x84 62#define ACPI_EC_COMMAND_QUERY 0x84
63#define EC_POLLING 0xFF 63#define EC_POLL 0xFF
64#define EC_BURST 0x00 64#define EC_INTR 0x00
65static int acpi_ec_remove(struct acpi_device *device, int type); 65static int acpi_ec_remove(struct acpi_device *device, int type);
66static int acpi_ec_start(struct acpi_device *device); 66static int acpi_ec_start(struct acpi_device *device);
67static int acpi_ec_stop(struct acpi_device *device, int type); 67static int acpi_ec_stop(struct acpi_device *device, int type);
68static int acpi_ec_burst_add(struct acpi_device *device); 68static int acpi_ec_intr_add(struct acpi_device *device);
69static int acpi_ec_polling_add(struct acpi_device *device); 69static int acpi_ec_poll_add(struct acpi_device *device);
70 70
71static struct acpi_driver acpi_ec_driver = { 71static struct acpi_driver acpi_ec_driver = {
72 .name = ACPI_EC_DRIVER_NAME, 72 .name = ACPI_EC_DRIVER_NAME,
73 .class = ACPI_EC_CLASS, 73 .class = ACPI_EC_CLASS,
74 .ids = ACPI_EC_HID, 74 .ids = ACPI_EC_HID,
75 .ops = { 75 .ops = {
76 .add = acpi_ec_polling_add, 76 .add = acpi_ec_intr_add,
77 .remove = acpi_ec_remove, 77 .remove = acpi_ec_remove,
78 .start = acpi_ec_start, 78 .start = acpi_ec_start,
79 .stop = acpi_ec_stop, 79 .stop = acpi_ec_stop,
@@ -105,7 +105,7 @@ union acpi_ec {
105 atomic_t pending_gpe; 105 atomic_t pending_gpe;
106 struct semaphore sem; 106 struct semaphore sem;
107 wait_queue_head_t wait; 107 wait_queue_head_t wait;
108 } burst; 108 } intr;
109 109
110 struct { 110 struct {
111 u32 mode; 111 u32 mode;
@@ -117,37 +117,37 @@ union acpi_ec {
117 struct acpi_generic_address data_addr; 117 struct acpi_generic_address data_addr;
118 unsigned long global_lock; 118 unsigned long global_lock;
119 spinlock_t lock; 119 spinlock_t lock;
120 } polling; 120 } poll;
121}; 121};
122 122
123static int acpi_ec_polling_wait(union acpi_ec *ec, u8 event); 123static int acpi_ec_poll_wait(union acpi_ec *ec, u8 event);
124static int acpi_ec_burst_wait(union acpi_ec *ec, unsigned int event); 124static int acpi_ec_intr_wait(union acpi_ec *ec, unsigned int event);
125static int acpi_ec_polling_read(union acpi_ec *ec, u8 address, u32 * data); 125static int acpi_ec_poll_read(union acpi_ec *ec, u8 address, u32 * data);
126static int acpi_ec_burst_read(union acpi_ec *ec, u8 address, u32 * data); 126static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data);
127static int acpi_ec_polling_write(union acpi_ec *ec, u8 address, u8 data); 127static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data);
128static int acpi_ec_burst_write(union acpi_ec *ec, u8 address, u8 data); 128static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data);
129static int acpi_ec_polling_query(union acpi_ec *ec, u32 * data); 129static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data);
130static int acpi_ec_burst_query(union acpi_ec *ec, u32 * data); 130static int acpi_ec_intr_query(union acpi_ec *ec, u32 * data);
131static void acpi_ec_gpe_polling_query(void *ec_cxt); 131static void acpi_ec_gpe_poll_query(void *ec_cxt);
132static void acpi_ec_gpe_burst_query(void *ec_cxt); 132static void acpi_ec_gpe_intr_query(void *ec_cxt);
133static u32 acpi_ec_gpe_polling_handler(void *data); 133static u32 acpi_ec_gpe_poll_handler(void *data);
134static u32 acpi_ec_gpe_burst_handler(void *data); 134static u32 acpi_ec_gpe_intr_handler(void *data);
135static acpi_status __init 135static acpi_status __init
136acpi_fake_ecdt_polling_callback(acpi_handle handle, 136acpi_fake_ecdt_poll_callback(acpi_handle handle,
137 u32 Level, void *context, void **retval); 137 u32 Level, void *context, void **retval);
138 138
139static acpi_status __init 139static acpi_status __init
140acpi_fake_ecdt_burst_callback(acpi_handle handle, 140acpi_fake_ecdt_intr_callback(acpi_handle handle,
141 u32 Level, void *context, void **retval); 141 u32 Level, void *context, void **retval);
142 142
143static int __init acpi_ec_polling_get_real_ecdt(void); 143static int __init acpi_ec_poll_get_real_ecdt(void);
144static int __init acpi_ec_burst_get_real_ecdt(void); 144static int __init acpi_ec_intr_get_real_ecdt(void);
145/* If we find an EC via the ECDT, we need to keep a ptr to its context */ 145/* If we find an EC via the ECDT, we need to keep a ptr to its context */
146static union acpi_ec *ec_ecdt; 146static union acpi_ec *ec_ecdt;
147 147
148/* External interfaces use first EC only, so remember */ 148/* External interfaces use first EC only, so remember */
149static struct acpi_device *first_ec; 149static struct acpi_device *first_ec;
150static int acpi_ec_polling_mode = EC_POLLING; 150static int acpi_ec_poll_mode = EC_INTR;
151 151
152/* -------------------------------------------------------------------------- 152/* --------------------------------------------------------------------------
153 Transaction Management 153 Transaction Management
@@ -163,13 +163,13 @@ static u32 acpi_ec_read_status(union acpi_ec *ec)
163 163
164static int acpi_ec_wait(union acpi_ec *ec, u8 event) 164static int acpi_ec_wait(union acpi_ec *ec, u8 event)
165{ 165{
166 if (acpi_ec_polling_mode) 166 if (acpi_ec_poll_mode)
167 return acpi_ec_polling_wait(ec, event); 167 return acpi_ec_poll_wait(ec, event);
168 else 168 else
169 return acpi_ec_burst_wait(ec, event); 169 return acpi_ec_intr_wait(ec, event);
170} 170}
171 171
172static int acpi_ec_polling_wait(union acpi_ec *ec, u8 event) 172static int acpi_ec_poll_wait(union acpi_ec *ec, u8 event)
173{ 173{
174 u32 acpi_ec_status = 0; 174 u32 acpi_ec_status = 0;
175 u32 i = ACPI_EC_UDELAY_COUNT; 175 u32 i = ACPI_EC_UDELAY_COUNT;
@@ -203,36 +203,31 @@ static int acpi_ec_polling_wait(union acpi_ec *ec, u8 event)
203 203
204 return -ETIME; 204 return -ETIME;
205} 205}
206static int acpi_ec_burst_wait(union acpi_ec *ec, unsigned int event) 206static int acpi_ec_intr_wait(union acpi_ec *ec, unsigned int event)
207{ 207{
208 int result = 0; 208 int result = 0;
209 209
210 ACPI_FUNCTION_TRACE("acpi_ec_wait"); 210 ACPI_FUNCTION_TRACE("acpi_ec_wait");
211 211
212 ec->burst.expect_event = event; 212 ec->intr.expect_event = event;
213 smp_mb(); 213 smp_mb();
214 214
215 switch (event) { 215 switch (event) {
216 case ACPI_EC_EVENT_OBF:
217 if (acpi_ec_read_status(ec) & event) {
218 ec->burst.expect_event = 0;
219 return_VALUE(0);
220 }
221 break;
222
223 case ACPI_EC_EVENT_IBE: 216 case ACPI_EC_EVENT_IBE:
224 if (~acpi_ec_read_status(ec) & event) { 217 if (~acpi_ec_read_status(ec) & event) {
225 ec->burst.expect_event = 0; 218 ec->intr.expect_event = 0;
226 return_VALUE(0); 219 return_VALUE(0);
227 } 220 }
228 break; 221 break;
222 default:
223 break;
229 } 224 }
230 225
231 result = wait_event_timeout(ec->burst.wait, 226 result = wait_event_timeout(ec->intr.wait,
232 !ec->burst.expect_event, 227 !ec->intr.expect_event,
233 msecs_to_jiffies(ACPI_EC_DELAY)); 228 msecs_to_jiffies(ACPI_EC_DELAY));
234 229
235 ec->burst.expect_event = 0; 230 ec->intr.expect_event = 0;
236 smp_mb(); 231 smp_mb();
237 232
238 /* 233 /*
@@ -255,7 +250,12 @@ static int acpi_ec_burst_wait(union acpi_ec *ec, unsigned int event)
255 return_VALUE(-ETIME); 250 return_VALUE(-ETIME);
256} 251}
257 252
258static int acpi_ec_enter_burst_mode(union acpi_ec *ec) 253#ifdef ACPI_FUTURE_USAGE
254/*
255 * Note: samsung nv5000 doesn't work with ec burst mode.
256 * http://bugzilla.kernel.org/show_bug.cgi?id=4980
257 */
258int acpi_ec_enter_burst_mode(union acpi_ec *ec)
259{ 259{
260 u32 tmp = 0; 260 u32 tmp = 0;
261 int status = 0; 261 int status = 0;
@@ -270,45 +270,56 @@ static int acpi_ec_enter_burst_mode(union acpi_ec *ec)
270 acpi_hw_low_level_write(8, ACPI_EC_BURST_ENABLE, 270 acpi_hw_low_level_write(8, ACPI_EC_BURST_ENABLE,
271 &ec->common.command_addr); 271 &ec->common.command_addr);
272 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF); 272 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
273 if (status)
274 return_VALUE(-EINVAL);
275 acpi_hw_low_level_read(8, &tmp, &ec->common.data_addr); 273 acpi_hw_low_level_read(8, &tmp, &ec->common.data_addr);
276 if (tmp != 0x90) { /* Burst ACK byte */ 274 if (tmp != 0x90) { /* Burst ACK byte */
277 return_VALUE(-EINVAL); 275 return_VALUE(-EINVAL);
278 } 276 }
279 } 277 }
280 278
281 atomic_set(&ec->burst.leaving_burst, 0); 279 atomic_set(&ec->intr.leaving_burst, 0);
282 return_VALUE(0); 280 return_VALUE(0);
283 end: 281 end:
284 printk("Error in acpi_ec_wait\n"); 282 printk(KERN_WARNING PREFIX "Error in acpi_ec_wait\n");
285 return_VALUE(-1); 283 return_VALUE(-1);
286} 284}
287 285
288static int acpi_ec_leave_burst_mode(union acpi_ec *ec) 286int acpi_ec_leave_burst_mode(union acpi_ec *ec)
289{ 287{
288 int status = 0;
290 289
291 ACPI_FUNCTION_TRACE("acpi_ec_leave_burst_mode"); 290 ACPI_FUNCTION_TRACE("acpi_ec_leave_burst_mode");
292 291
293 atomic_set(&ec->burst.leaving_burst, 1); 292 status = acpi_ec_read_status(ec);
293 if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)){
294 status = acpi_ec_wait(ec, ACPI_EC_FLAG_IBF);
295 if(status)
296 goto end;
297 acpi_hw_low_level_write(8, ACPI_EC_BURST_DISABLE, &ec->common.command_addr);
298 acpi_ec_wait(ec, ACPI_EC_FLAG_IBF);
299 }
300 atomic_set(&ec->intr.leaving_burst, 1);
294 return_VALUE(0); 301 return_VALUE(0);
302end:
303 printk(KERN_WARNING PREFIX "leave burst_mode:error\n");
304 return_VALUE(-1);
295} 305}
306#endif /* ACPI_FUTURE_USAGE */
296 307
297static int acpi_ec_read(union acpi_ec *ec, u8 address, u32 * data) 308static int acpi_ec_read(union acpi_ec *ec, u8 address, u32 * data)
298{ 309{
299 if (acpi_ec_polling_mode) 310 if (acpi_ec_poll_mode)
300 return acpi_ec_polling_read(ec, address, data); 311 return acpi_ec_poll_read(ec, address, data);
301 else 312 else
302 return acpi_ec_burst_read(ec, address, data); 313 return acpi_ec_intr_read(ec, address, data);
303} 314}
304static int acpi_ec_write(union acpi_ec *ec, u8 address, u8 data) 315static int acpi_ec_write(union acpi_ec *ec, u8 address, u8 data)
305{ 316{
306 if (acpi_ec_polling_mode) 317 if (acpi_ec_poll_mode)
307 return acpi_ec_polling_write(ec, address, data); 318 return acpi_ec_poll_write(ec, address, data);
308 else 319 else
309 return acpi_ec_burst_write(ec, address, data); 320 return acpi_ec_intr_write(ec, address, data);
310} 321}
311static int acpi_ec_polling_read(union acpi_ec *ec, u8 address, u32 * data) 322static int acpi_ec_poll_read(union acpi_ec *ec, u8 address, u32 * data)
312{ 323{
313 acpi_status status = AE_OK; 324 acpi_status status = AE_OK;
314 int result = 0; 325 int result = 0;
@@ -328,7 +339,7 @@ static int acpi_ec_polling_read(union acpi_ec *ec, u8 address, u32 * data)
328 return_VALUE(-ENODEV); 339 return_VALUE(-ENODEV);
329 } 340 }
330 341
331 spin_lock_irqsave(&ec->polling.lock, flags); 342 spin_lock_irqsave(&ec->poll.lock, flags);
332 343
333 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_READ, 344 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_READ,
334 &ec->common.command_addr); 345 &ec->common.command_addr);
@@ -347,7 +358,7 @@ static int acpi_ec_polling_read(union acpi_ec *ec, u8 address, u32 * data)
347 *data, address)); 358 *data, address));
348 359
349 end: 360 end:
350 spin_unlock_irqrestore(&ec->polling.lock, flags); 361 spin_unlock_irqrestore(&ec->poll.lock, flags);
351 362
352 if (ec->common.global_lock) 363 if (ec->common.global_lock)
353 acpi_release_global_lock(glk); 364 acpi_release_global_lock(glk);
@@ -355,7 +366,7 @@ static int acpi_ec_polling_read(union acpi_ec *ec, u8 address, u32 * data)
355 return_VALUE(result); 366 return_VALUE(result);
356} 367}
357 368
358static int acpi_ec_polling_write(union acpi_ec *ec, u8 address, u8 data) 369static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
359{ 370{
360 int result = 0; 371 int result = 0;
361 acpi_status status = AE_OK; 372 acpi_status status = AE_OK;
@@ -373,7 +384,7 @@ static int acpi_ec_polling_write(union acpi_ec *ec, u8 address, u8 data)
373 return_VALUE(-ENODEV); 384 return_VALUE(-ENODEV);
374 } 385 }
375 386
376 spin_lock_irqsave(&ec->polling.lock, flags); 387 spin_lock_irqsave(&ec->poll.lock, flags);
377 388
378 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_WRITE, 389 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_WRITE,
379 &ec->common.command_addr); 390 &ec->common.command_addr);
@@ -395,7 +406,7 @@ static int acpi_ec_polling_write(union acpi_ec *ec, u8 address, u8 data)
395 data, address)); 406 data, address));
396 407
397 end: 408 end:
398 spin_unlock_irqrestore(&ec->polling.lock, flags); 409 spin_unlock_irqrestore(&ec->poll.lock, flags);
399 410
400 if (ec->common.global_lock) 411 if (ec->common.global_lock)
401 acpi_release_global_lock(glk); 412 acpi_release_global_lock(glk);
@@ -403,7 +414,7 @@ static int acpi_ec_polling_write(union acpi_ec *ec, u8 address, u8 data)
403 return_VALUE(result); 414 return_VALUE(result);
404} 415}
405 416
406static int acpi_ec_burst_read(union acpi_ec *ec, u8 address, u32 * data) 417static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data)
407{ 418{
408 int status = 0; 419 int status = 0;
409 u32 glk; 420 u32 glk;
@@ -422,25 +433,24 @@ static int acpi_ec_burst_read(union acpi_ec *ec, u8 address, u32 * data)
422 } 433 }
423 434
424 WARN_ON(in_interrupt()); 435 WARN_ON(in_interrupt());
425 down(&ec->burst.sem); 436 down(&ec->intr.sem);
426 437
427 acpi_ec_enter_burst_mode(ec);
428 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 438 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
429 if (status) { 439 if (status) {
430 printk("read EC, IB not empty\n"); 440 printk(KERN_DEBUG PREFIX "read EC, IB not empty\n");
431 goto end; 441 goto end;
432 } 442 }
433 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_READ, 443 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_READ,
434 &ec->common.command_addr); 444 &ec->common.command_addr);
435 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 445 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
436 if (status) { 446 if (status) {
437 printk("read EC, IB not empty\n"); 447 printk(KERN_DEBUG PREFIX "read EC, IB not empty\n");
438 } 448 }
439 449
440 acpi_hw_low_level_write(8, address, &ec->common.data_addr); 450 acpi_hw_low_level_write(8, address, &ec->common.data_addr);
441 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF); 451 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
442 if (status) { 452 if (status) {
443 printk("read EC, OB not full\n"); 453 printk(KERN_DEBUG PREFIX "read EC, OB not full\n");
444 goto end; 454 goto end;
445 } 455 }
446 acpi_hw_low_level_read(8, data, &ec->common.data_addr); 456 acpi_hw_low_level_read(8, data, &ec->common.data_addr);
@@ -448,8 +458,7 @@ static int acpi_ec_burst_read(union acpi_ec *ec, u8 address, u32 * data)
448 *data, address)); 458 *data, address));
449 459
450 end: 460 end:
451 acpi_ec_leave_burst_mode(ec); 461 up(&ec->intr.sem);
452 up(&ec->burst.sem);
453 462
454 if (ec->common.global_lock) 463 if (ec->common.global_lock)
455 acpi_release_global_lock(glk); 464 acpi_release_global_lock(glk);
@@ -457,7 +466,7 @@ static int acpi_ec_burst_read(union acpi_ec *ec, u8 address, u32 * data)
457 return_VALUE(status); 466 return_VALUE(status);
458} 467}
459 468
460static int acpi_ec_burst_write(union acpi_ec *ec, u8 address, u8 data) 469static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data)
461{ 470{
462 int status = 0; 471 int status = 0;
463 u32 glk; 472 u32 glk;
@@ -474,25 +483,23 @@ static int acpi_ec_burst_write(union acpi_ec *ec, u8 address, u8 data)
474 } 483 }
475 484
476 WARN_ON(in_interrupt()); 485 WARN_ON(in_interrupt());
477 down(&ec->burst.sem); 486 down(&ec->intr.sem);
478
479 acpi_ec_enter_burst_mode(ec);
480 487
481 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 488 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
482 if (status) { 489 if (status) {
483 printk("write EC, IB not empty\n"); 490 printk(KERN_DEBUG PREFIX "write EC, IB not empty\n");
484 } 491 }
485 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_WRITE, 492 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_WRITE,
486 &ec->common.command_addr); 493 &ec->common.command_addr);
487 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 494 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
488 if (status) { 495 if (status) {
489 printk("write EC, IB not empty\n"); 496 printk(KERN_DEBUG PREFIX "write EC, IB not empty\n");
490 } 497 }
491 498
492 acpi_hw_low_level_write(8, address, &ec->common.data_addr); 499 acpi_hw_low_level_write(8, address, &ec->common.data_addr);
493 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 500 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
494 if (status) { 501 if (status) {
495 printk("write EC, IB not empty\n"); 502 printk(KERN_DEBUG PREFIX "write EC, IB not empty\n");
496 } 503 }
497 504
498 acpi_hw_low_level_write(8, data, &ec->common.data_addr); 505 acpi_hw_low_level_write(8, data, &ec->common.data_addr);
@@ -500,8 +507,7 @@ static int acpi_ec_burst_write(union acpi_ec *ec, u8 address, u8 data)
500 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Wrote [%02x] to address [%02x]\n", 507 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Wrote [%02x] to address [%02x]\n",
501 data, address)); 508 data, address));
502 509
503 acpi_ec_leave_burst_mode(ec); 510 up(&ec->intr.sem);
504 up(&ec->burst.sem);
505 511
506 if (ec->common.global_lock) 512 if (ec->common.global_lock)
507 acpi_release_global_lock(glk); 513 acpi_release_global_lock(glk);
@@ -553,12 +559,12 @@ EXPORT_SYMBOL(ec_write);
553 559
554static int acpi_ec_query(union acpi_ec *ec, u32 * data) 560static int acpi_ec_query(union acpi_ec *ec, u32 * data)
555{ 561{
556 if (acpi_ec_polling_mode) 562 if (acpi_ec_poll_mode)
557 return acpi_ec_polling_query(ec, data); 563 return acpi_ec_poll_query(ec, data);
558 else 564 else
559 return acpi_ec_burst_query(ec, data); 565 return acpi_ec_intr_query(ec, data);
560} 566}
561static int acpi_ec_polling_query(union acpi_ec *ec, u32 * data) 567static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data)
562{ 568{
563 int result = 0; 569 int result = 0;
564 acpi_status status = AE_OK; 570 acpi_status status = AE_OK;
@@ -583,7 +589,7 @@ static int acpi_ec_polling_query(union acpi_ec *ec, u32 * data)
583 * Note that successful completion of the query causes the ACPI_EC_SCI 589 * Note that successful completion of the query causes the ACPI_EC_SCI
584 * bit to be cleared (and thus clearing the interrupt source). 590 * bit to be cleared (and thus clearing the interrupt source).
585 */ 591 */
586 spin_lock_irqsave(&ec->polling.lock, flags); 592 spin_lock_irqsave(&ec->poll.lock, flags);
587 593
588 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_QUERY, 594 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_QUERY,
589 &ec->common.command_addr); 595 &ec->common.command_addr);
@@ -596,14 +602,14 @@ static int acpi_ec_polling_query(union acpi_ec *ec, u32 * data)
596 result = -ENODATA; 602 result = -ENODATA;
597 603
598 end: 604 end:
599 spin_unlock_irqrestore(&ec->polling.lock, flags); 605 spin_unlock_irqrestore(&ec->poll.lock, flags);
600 606
601 if (ec->common.global_lock) 607 if (ec->common.global_lock)
602 acpi_release_global_lock(glk); 608 acpi_release_global_lock(glk);
603 609
604 return_VALUE(result); 610 return_VALUE(result);
605} 611}
606static int acpi_ec_burst_query(union acpi_ec *ec, u32 * data) 612static int acpi_ec_intr_query(union acpi_ec *ec, u32 * data)
607{ 613{
608 int status = 0; 614 int status = 0;
609 u32 glk; 615 u32 glk;
@@ -620,11 +626,11 @@ static int acpi_ec_burst_query(union acpi_ec *ec, u32 * data)
620 return_VALUE(-ENODEV); 626 return_VALUE(-ENODEV);
621 } 627 }
622 628
623 down(&ec->burst.sem); 629 down(&ec->intr.sem);
624 630
625 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 631 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
626 if (status) { 632 if (status) {
627 printk("query EC, IB not empty\n"); 633 printk(KERN_DEBUG PREFIX "query EC, IB not empty\n");
628 goto end; 634 goto end;
629 } 635 }
630 /* 636 /*
@@ -636,7 +642,7 @@ static int acpi_ec_burst_query(union acpi_ec *ec, u32 * data)
636 &ec->common.command_addr); 642 &ec->common.command_addr);
637 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF); 643 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
638 if (status) { 644 if (status) {
639 printk("query EC, OB not full\n"); 645 printk(KERN_DEBUG PREFIX "query EC, OB not full\n");
640 goto end; 646 goto end;
641 } 647 }
642 648
@@ -645,7 +651,7 @@ static int acpi_ec_burst_query(union acpi_ec *ec, u32 * data)
645 status = -ENODATA; 651 status = -ENODATA;
646 652
647 end: 653 end:
648 up(&ec->burst.sem); 654 up(&ec->intr.sem);
649 655
650 if (ec->common.global_lock) 656 if (ec->common.global_lock)
651 acpi_release_global_lock(glk); 657 acpi_release_global_lock(glk);
@@ -664,13 +670,13 @@ union acpi_ec_query_data {
664 670
665static void acpi_ec_gpe_query(void *ec_cxt) 671static void acpi_ec_gpe_query(void *ec_cxt)
666{ 672{
667 if (acpi_ec_polling_mode) 673 if (acpi_ec_poll_mode)
668 acpi_ec_gpe_polling_query(ec_cxt); 674 acpi_ec_gpe_poll_query(ec_cxt);
669 else 675 else
670 acpi_ec_gpe_burst_query(ec_cxt); 676 acpi_ec_gpe_intr_query(ec_cxt);
671} 677}
672 678
673static void acpi_ec_gpe_polling_query(void *ec_cxt) 679static void acpi_ec_gpe_poll_query(void *ec_cxt)
674{ 680{
675 union acpi_ec *ec = (union acpi_ec *)ec_cxt; 681 union acpi_ec *ec = (union acpi_ec *)ec_cxt;
676 u32 value = 0; 682 u32 value = 0;
@@ -685,9 +691,9 @@ static void acpi_ec_gpe_polling_query(void *ec_cxt)
685 if (!ec_cxt) 691 if (!ec_cxt)
686 goto end; 692 goto end;
687 693
688 spin_lock_irqsave(&ec->polling.lock, flags); 694 spin_lock_irqsave(&ec->poll.lock, flags);
689 acpi_hw_low_level_read(8, &value, &ec->common.command_addr); 695 acpi_hw_low_level_read(8, &value, &ec->common.command_addr);
690 spin_unlock_irqrestore(&ec->polling.lock, flags); 696 spin_unlock_irqrestore(&ec->poll.lock, flags);
691 697
692 /* TBD: Implement asynch events! 698 /* TBD: Implement asynch events!
693 * NOTE: All we care about are EC-SCI's. Other EC events are 699 * NOTE: All we care about are EC-SCI's. Other EC events are
@@ -711,7 +717,7 @@ static void acpi_ec_gpe_polling_query(void *ec_cxt)
711 end: 717 end:
712 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 718 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
713} 719}
714static void acpi_ec_gpe_burst_query(void *ec_cxt) 720static void acpi_ec_gpe_intr_query(void *ec_cxt)
715{ 721{
716 union acpi_ec *ec = (union acpi_ec *)ec_cxt; 722 union acpi_ec *ec = (union acpi_ec *)ec_cxt;
717 u32 value; 723 u32 value;
@@ -736,18 +742,18 @@ static void acpi_ec_gpe_burst_query(void *ec_cxt)
736 742
737 acpi_evaluate_object(ec->common.handle, object_name, NULL, NULL); 743 acpi_evaluate_object(ec->common.handle, object_name, NULL, NULL);
738 end: 744 end:
739 atomic_dec(&ec->burst.pending_gpe); 745 atomic_dec(&ec->intr.pending_gpe);
740 return; 746 return;
741} 747}
742 748
743static u32 acpi_ec_gpe_handler(void *data) 749static u32 acpi_ec_gpe_handler(void *data)
744{ 750{
745 if (acpi_ec_polling_mode) 751 if (acpi_ec_poll_mode)
746 return acpi_ec_gpe_polling_handler(data); 752 return acpi_ec_gpe_poll_handler(data);
747 else 753 else
748 return acpi_ec_gpe_burst_handler(data); 754 return acpi_ec_gpe_intr_handler(data);
749} 755}
750static u32 acpi_ec_gpe_polling_handler(void *data) 756static u32 acpi_ec_gpe_poll_handler(void *data)
751{ 757{
752 acpi_status status = AE_OK; 758 acpi_status status = AE_OK;
753 union acpi_ec *ec = (union acpi_ec *)data; 759 union acpi_ec *ec = (union acpi_ec *)data;
@@ -765,7 +771,7 @@ static u32 acpi_ec_gpe_polling_handler(void *data)
765 else 771 else
766 return ACPI_INTERRUPT_NOT_HANDLED; 772 return ACPI_INTERRUPT_NOT_HANDLED;
767} 773}
768static u32 acpi_ec_gpe_burst_handler(void *data) 774static u32 acpi_ec_gpe_intr_handler(void *data)
769{ 775{
770 acpi_status status = AE_OK; 776 acpi_status status = AE_OK;
771 u32 value; 777 u32 value;
@@ -777,22 +783,22 @@ static u32 acpi_ec_gpe_burst_handler(void *data)
777 acpi_clear_gpe(NULL, ec->common.gpe_bit, ACPI_ISR); 783 acpi_clear_gpe(NULL, ec->common.gpe_bit, ACPI_ISR);
778 value = acpi_ec_read_status(ec); 784 value = acpi_ec_read_status(ec);
779 785
780 switch (ec->burst.expect_event) { 786 switch (ec->intr.expect_event) {
781 case ACPI_EC_EVENT_OBF: 787 case ACPI_EC_EVENT_OBF:
782 if (!(value & ACPI_EC_FLAG_OBF)) 788 if (!(value & ACPI_EC_FLAG_OBF))
783 break; 789 break;
784 case ACPI_EC_EVENT_IBE: 790 case ACPI_EC_EVENT_IBE:
785 if ((value & ACPI_EC_FLAG_IBF)) 791 if ((value & ACPI_EC_FLAG_IBF))
786 break; 792 break;
787 ec->burst.expect_event = 0; 793 ec->intr.expect_event = 0;
788 wake_up(&ec->burst.wait); 794 wake_up(&ec->intr.wait);
789 return ACPI_INTERRUPT_HANDLED; 795 return ACPI_INTERRUPT_HANDLED;
790 default: 796 default:
791 break; 797 break;
792 } 798 }
793 799
794 if (value & ACPI_EC_FLAG_SCI) { 800 if (value & ACPI_EC_FLAG_SCI) {
795 atomic_add(1, &ec->burst.pending_gpe); 801 atomic_add(1, &ec->intr.pending_gpe);
796 status = acpi_os_queue_for_execution(OSD_PRIORITY_GPE, 802 status = acpi_os_queue_for_execution(OSD_PRIORITY_GPE,
797 acpi_ec_gpe_query, ec); 803 acpi_ec_gpe_query, ec);
798 return status == AE_OK ? 804 return status == AE_OK ?
@@ -980,7 +986,7 @@ static int acpi_ec_remove_fs(struct acpi_device *device)
980 Driver Interface 986 Driver Interface
981 -------------------------------------------------------------------------- */ 987 -------------------------------------------------------------------------- */
982 988
983static int acpi_ec_polling_add(struct acpi_device *device) 989static int acpi_ec_poll_add(struct acpi_device *device)
984{ 990{
985 int result = 0; 991 int result = 0;
986 acpi_status status = AE_OK; 992 acpi_status status = AE_OK;
@@ -999,7 +1005,7 @@ static int acpi_ec_polling_add(struct acpi_device *device)
999 1005
1000 ec->common.handle = device->handle; 1006 ec->common.handle = device->handle;
1001 ec->common.uid = -1; 1007 ec->common.uid = -1;
1002 spin_lock_init(&ec->polling.lock); 1008 spin_lock_init(&ec->poll.lock);
1003 strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME); 1009 strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
1004 strcpy(acpi_device_class(device), ACPI_EC_CLASS); 1010 strcpy(acpi_device_class(device), ACPI_EC_CLASS);
1005 acpi_driver_data(device) = ec; 1011 acpi_driver_data(device) = ec;
@@ -1038,7 +1044,7 @@ static int acpi_ec_polling_add(struct acpi_device *device)
1038 if (result) 1044 if (result)
1039 goto end; 1045 goto end;
1040 1046
1041 printk(KERN_INFO PREFIX "%s [%s] (gpe %d)\n", 1047 printk(KERN_INFO PREFIX "%s [%s] (gpe %d) polling mode.\n",
1042 acpi_device_name(device), acpi_device_bid(device), 1048 acpi_device_name(device), acpi_device_bid(device),
1043 (u32) ec->common.gpe_bit); 1049 (u32) ec->common.gpe_bit);
1044 1050
@@ -1051,7 +1057,7 @@ static int acpi_ec_polling_add(struct acpi_device *device)
1051 1057
1052 return_VALUE(result); 1058 return_VALUE(result);
1053} 1059}
1054static int acpi_ec_burst_add(struct acpi_device *device) 1060static int acpi_ec_intr_add(struct acpi_device *device)
1055{ 1061{
1056 int result = 0; 1062 int result = 0;
1057 acpi_status status = AE_OK; 1063 acpi_status status = AE_OK;
@@ -1070,10 +1076,10 @@ static int acpi_ec_burst_add(struct acpi_device *device)
1070 1076
1071 ec->common.handle = device->handle; 1077 ec->common.handle = device->handle;
1072 ec->common.uid = -1; 1078 ec->common.uid = -1;
1073 atomic_set(&ec->burst.pending_gpe, 0); 1079 atomic_set(&ec->intr.pending_gpe, 0);
1074 atomic_set(&ec->burst.leaving_burst, 1); 1080 atomic_set(&ec->intr.leaving_burst, 1);
1075 init_MUTEX(&ec->burst.sem); 1081 init_MUTEX(&ec->intr.sem);
1076 init_waitqueue_head(&ec->burst.wait); 1082 init_waitqueue_head(&ec->intr.wait);
1077 strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME); 1083 strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
1078 strcpy(acpi_device_class(device), ACPI_EC_CLASS); 1084 strcpy(acpi_device_class(device), ACPI_EC_CLASS);
1079 acpi_driver_data(device) = ec; 1085 acpi_driver_data(device) = ec;
@@ -1112,8 +1118,7 @@ static int acpi_ec_burst_add(struct acpi_device *device)
1112 if (result) 1118 if (result)
1113 goto end; 1119 goto end;
1114 1120
1115 printk("burst-mode-ec-10-Aug\n"); 1121 printk(KERN_INFO PREFIX "%s [%s] (gpe %d) interrupt mode.\n",
1116 printk(KERN_INFO PREFIX "%s [%s] (gpe %d)\n",
1117 acpi_device_name(device), acpi_device_bid(device), 1122 acpi_device_name(device), acpi_device_bid(device),
1118 (u32) ec->common.gpe_bit); 1123 (u32) ec->common.gpe_bit);
1119 1124
@@ -1151,7 +1156,7 @@ acpi_ec_io_ports(struct acpi_resource *resource, void *context)
1151 union acpi_ec *ec = (union acpi_ec *)context; 1156 union acpi_ec *ec = (union acpi_ec *)context;
1152 struct acpi_generic_address *addr; 1157 struct acpi_generic_address *addr;
1153 1158
1154 if (resource->id != ACPI_RSTYPE_IO) { 1159 if (resource->type != ACPI_RESOURCE_TYPE_IO) {
1155 return AE_OK; 1160 return AE_OK;
1156 } 1161 }
1157 1162
@@ -1171,7 +1176,7 @@ acpi_ec_io_ports(struct acpi_resource *resource, void *context)
1171 addr->address_space_id = ACPI_ADR_SPACE_SYSTEM_IO; 1176 addr->address_space_id = ACPI_ADR_SPACE_SYSTEM_IO;
1172 addr->register_bit_width = 8; 1177 addr->register_bit_width = 8;
1173 addr->register_bit_offset = 0; 1178 addr->register_bit_offset = 0;
1174 addr->address = resource->data.io.min_base_address; 1179 addr->address = resource->data.io.minimum;
1175 1180
1176 return AE_OK; 1181 return AE_OK;
1177} 1182}
@@ -1267,16 +1272,16 @@ acpi_fake_ecdt_callback(acpi_handle handle,
1267 u32 Level, void *context, void **retval) 1272 u32 Level, void *context, void **retval)
1268{ 1273{
1269 1274
1270 if (acpi_ec_polling_mode) 1275 if (acpi_ec_poll_mode)
1271 return acpi_fake_ecdt_polling_callback(handle, 1276 return acpi_fake_ecdt_poll_callback(handle,
1272 Level, context, retval); 1277 Level, context, retval);
1273 else 1278 else
1274 return acpi_fake_ecdt_burst_callback(handle, 1279 return acpi_fake_ecdt_intr_callback(handle,
1275 Level, context, retval); 1280 Level, context, retval);
1276} 1281}
1277 1282
1278static acpi_status __init 1283static acpi_status __init
1279acpi_fake_ecdt_polling_callback(acpi_handle handle, 1284acpi_fake_ecdt_poll_callback(acpi_handle handle,
1280 u32 Level, void *context, void **retval) 1285 u32 Level, void *context, void **retval)
1281{ 1286{
1282 acpi_status status; 1287 acpi_status status;
@@ -1295,7 +1300,7 @@ acpi_fake_ecdt_polling_callback(acpi_handle handle,
1295 &ec_ecdt->common.gpe_bit); 1300 &ec_ecdt->common.gpe_bit);
1296 if (ACPI_FAILURE(status)) 1301 if (ACPI_FAILURE(status))
1297 return status; 1302 return status;
1298 spin_lock_init(&ec_ecdt->polling.lock); 1303 spin_lock_init(&ec_ecdt->poll.lock);
1299 ec_ecdt->common.global_lock = TRUE; 1304 ec_ecdt->common.global_lock = TRUE;
1300 ec_ecdt->common.handle = handle; 1305 ec_ecdt->common.handle = handle;
1301 1306
@@ -1308,13 +1313,13 @@ acpi_fake_ecdt_polling_callback(acpi_handle handle,
1308} 1313}
1309 1314
1310static acpi_status __init 1315static acpi_status __init
1311acpi_fake_ecdt_burst_callback(acpi_handle handle, 1316acpi_fake_ecdt_intr_callback(acpi_handle handle,
1312 u32 Level, void *context, void **retval) 1317 u32 Level, void *context, void **retval)
1313{ 1318{
1314 acpi_status status; 1319 acpi_status status;
1315 1320
1316 init_MUTEX(&ec_ecdt->burst.sem); 1321 init_MUTEX(&ec_ecdt->intr.sem);
1317 init_waitqueue_head(&ec_ecdt->burst.wait); 1322 init_waitqueue_head(&ec_ecdt->intr.wait);
1318 status = acpi_walk_resources(handle, METHOD_NAME__CRS, 1323 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
1319 acpi_ec_io_ports, ec_ecdt); 1324 acpi_ec_io_ports, ec_ecdt);
1320 if (ACPI_FAILURE(status)) 1325 if (ACPI_FAILURE(status))
@@ -1380,13 +1385,13 @@ static int __init acpi_ec_fake_ecdt(void)
1380 1385
1381static int __init acpi_ec_get_real_ecdt(void) 1386static int __init acpi_ec_get_real_ecdt(void)
1382{ 1387{
1383 if (acpi_ec_polling_mode) 1388 if (acpi_ec_poll_mode)
1384 return acpi_ec_polling_get_real_ecdt(); 1389 return acpi_ec_poll_get_real_ecdt();
1385 else 1390 else
1386 return acpi_ec_burst_get_real_ecdt(); 1391 return acpi_ec_intr_get_real_ecdt();
1387} 1392}
1388 1393
1389static int __init acpi_ec_polling_get_real_ecdt(void) 1394static int __init acpi_ec_poll_get_real_ecdt(void)
1390{ 1395{
1391 acpi_status status; 1396 acpi_status status;
1392 struct acpi_table_ecdt *ecdt_ptr; 1397 struct acpi_table_ecdt *ecdt_ptr;
@@ -1411,7 +1416,7 @@ static int __init acpi_ec_polling_get_real_ecdt(void)
1411 ec_ecdt->common.status_addr = ecdt_ptr->ec_control; 1416 ec_ecdt->common.status_addr = ecdt_ptr->ec_control;
1412 ec_ecdt->common.data_addr = ecdt_ptr->ec_data; 1417 ec_ecdt->common.data_addr = ecdt_ptr->ec_data;
1413 ec_ecdt->common.gpe_bit = ecdt_ptr->gpe_bit; 1418 ec_ecdt->common.gpe_bit = ecdt_ptr->gpe_bit;
1414 spin_lock_init(&ec_ecdt->polling.lock); 1419 spin_lock_init(&ec_ecdt->poll.lock);
1415 /* use the GL just to be safe */ 1420 /* use the GL just to be safe */
1416 ec_ecdt->common.global_lock = TRUE; 1421 ec_ecdt->common.global_lock = TRUE;
1417 ec_ecdt->common.uid = ecdt_ptr->uid; 1422 ec_ecdt->common.uid = ecdt_ptr->uid;
@@ -1431,7 +1436,7 @@ static int __init acpi_ec_polling_get_real_ecdt(void)
1431 return -ENODEV; 1436 return -ENODEV;
1432} 1437}
1433 1438
1434static int __init acpi_ec_burst_get_real_ecdt(void) 1439static int __init acpi_ec_intr_get_real_ecdt(void)
1435{ 1440{
1436 acpi_status status; 1441 acpi_status status;
1437 struct acpi_table_ecdt *ecdt_ptr; 1442 struct acpi_table_ecdt *ecdt_ptr;
@@ -1452,8 +1457,8 @@ static int __init acpi_ec_burst_get_real_ecdt(void)
1452 return -ENOMEM; 1457 return -ENOMEM;
1453 memset(ec_ecdt, 0, sizeof(union acpi_ec)); 1458 memset(ec_ecdt, 0, sizeof(union acpi_ec));
1454 1459
1455 init_MUTEX(&ec_ecdt->burst.sem); 1460 init_MUTEX(&ec_ecdt->intr.sem);
1456 init_waitqueue_head(&ec_ecdt->burst.wait); 1461 init_waitqueue_head(&ec_ecdt->intr.wait);
1457 ec_ecdt->common.command_addr = ecdt_ptr->ec_control; 1462 ec_ecdt->common.command_addr = ecdt_ptr->ec_control;
1458 ec_ecdt->common.status_addr = ecdt_ptr->ec_control; 1463 ec_ecdt->common.status_addr = ecdt_ptr->ec_control;
1459 ec_ecdt->common.data_addr = ecdt_ptr->ec_data; 1464 ec_ecdt->common.data_addr = ecdt_ptr->ec_data;
@@ -1571,22 +1576,22 @@ static int __init acpi_fake_ecdt_setup(char *str)
1571} 1576}
1572 1577
1573__setup("acpi_fake_ecdt", acpi_fake_ecdt_setup); 1578__setup("acpi_fake_ecdt", acpi_fake_ecdt_setup);
1574static int __init acpi_ec_set_polling_mode(char *str) 1579static int __init acpi_ec_set_intr_mode(char *str)
1575{ 1580{
1576 int burst; 1581 int intr;
1577 1582
1578 if (!get_option(&str, &burst)) 1583 if (!get_option(&str, &intr))
1579 return 0; 1584 return 0;
1580 1585
1581 if (burst) { 1586 if (intr) {
1582 acpi_ec_polling_mode = EC_BURST; 1587 acpi_ec_poll_mode = EC_INTR;
1583 acpi_ec_driver.ops.add = acpi_ec_burst_add; 1588 acpi_ec_driver.ops.add = acpi_ec_intr_add;
1584 } else { 1589 } else {
1585 acpi_ec_polling_mode = EC_POLLING; 1590 acpi_ec_poll_mode = EC_POLL;
1586 acpi_ec_driver.ops.add = acpi_ec_polling_add; 1591 acpi_ec_driver.ops.add = acpi_ec_poll_add;
1587 } 1592 }
1588 printk(KERN_INFO PREFIX "EC %s mode.\n", burst ? "burst" : "polling"); 1593 printk(KERN_INFO PREFIX "EC %s mode.\n", intr ? "interrupt" : "polling");
1589 return 0; 1594 return 0;
1590} 1595}
1591 1596
1592__setup("ec_burst=", acpi_ec_set_polling_mode); 1597__setup("ec_intr=", acpi_ec_set_intr_mode);