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path: root/drivers/acpi/ec.c
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-rw-r--r--drivers/acpi/ec.c1028
1 files changed, 443 insertions, 585 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 1ac5731d45e5..7e1a445955bc 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -38,130 +38,112 @@
38#include <acpi/actypes.h> 38#include <acpi/actypes.h>
39 39
40#define _COMPONENT ACPI_EC_COMPONENT 40#define _COMPONENT ACPI_EC_COMPONENT
41ACPI_MODULE_NAME ("acpi_ec") 41ACPI_MODULE_NAME("acpi_ec")
42
43#define ACPI_EC_COMPONENT 0x00100000 42#define ACPI_EC_COMPONENT 0x00100000
44#define ACPI_EC_CLASS "embedded_controller" 43#define ACPI_EC_CLASS "embedded_controller"
45#define ACPI_EC_HID "PNP0C09" 44#define ACPI_EC_HID "PNP0C09"
46#define ACPI_EC_DRIVER_NAME "ACPI Embedded Controller Driver" 45#define ACPI_EC_DRIVER_NAME "ACPI Embedded Controller Driver"
47#define ACPI_EC_DEVICE_NAME "Embedded Controller" 46#define ACPI_EC_DEVICE_NAME "Embedded Controller"
48#define ACPI_EC_FILE_INFO "info" 47#define ACPI_EC_FILE_INFO "info"
49
50
51#define ACPI_EC_FLAG_OBF 0x01 /* Output buffer full */ 48#define ACPI_EC_FLAG_OBF 0x01 /* Output buffer full */
52#define ACPI_EC_FLAG_IBF 0x02 /* Input buffer full */ 49#define ACPI_EC_FLAG_IBF 0x02 /* Input buffer full */
53#define ACPI_EC_FLAG_BURST 0x10 /* burst mode */ 50#define ACPI_EC_FLAG_BURST 0x10 /* burst mode */
54#define ACPI_EC_FLAG_SCI 0x20 /* EC-SCI occurred */ 51#define ACPI_EC_FLAG_SCI 0x20 /* EC-SCI occurred */
55
56#define ACPI_EC_EVENT_OBF 0x01 /* Output buffer full */ 52#define ACPI_EC_EVENT_OBF 0x01 /* Output buffer full */
57#define ACPI_EC_EVENT_IBE 0x02 /* Input buffer empty */ 53#define ACPI_EC_EVENT_IBE 0x02 /* Input buffer empty */
58
59#define ACPI_EC_DELAY 50 /* Wait 50ms max. during EC ops */ 54#define ACPI_EC_DELAY 50 /* Wait 50ms max. during EC ops */
60#define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */ 55#define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */
61 56#define ACPI_EC_UDELAY 100 /* Poll @ 100us increments */
62#define ACPI_EC_UDELAY 100 /* Poll @ 100us increments */ 57#define ACPI_EC_UDELAY_COUNT 1000 /* Wait 10ms max. during EC ops */
63#define ACPI_EC_UDELAY_COUNT 1000 /* Wait 10ms max. during EC ops */
64
65#define ACPI_EC_COMMAND_READ 0x80 58#define ACPI_EC_COMMAND_READ 0x80
66#define ACPI_EC_COMMAND_WRITE 0x81 59#define ACPI_EC_COMMAND_WRITE 0x81
67#define ACPI_EC_BURST_ENABLE 0x82 60#define ACPI_EC_BURST_ENABLE 0x82
68#define ACPI_EC_BURST_DISABLE 0x83 61#define ACPI_EC_BURST_DISABLE 0x83
69#define ACPI_EC_COMMAND_QUERY 0x84 62#define ACPI_EC_COMMAND_QUERY 0x84
70
71#define EC_POLLING 0xFF 63#define EC_POLLING 0xFF
72#define EC_BURST 0x00 64#define EC_BURST 0x00
73 65static int acpi_ec_remove(struct acpi_device *device, int type);
74 66static int acpi_ec_start(struct acpi_device *device);
75static int acpi_ec_remove (struct acpi_device *device, int type); 67static int acpi_ec_stop(struct acpi_device *device, int type);
76static int acpi_ec_start (struct acpi_device *device); 68static int acpi_ec_burst_add(struct acpi_device *device);
77static int acpi_ec_stop (struct acpi_device *device, int type); 69static int acpi_ec_polling_add(struct acpi_device *device);
78static int acpi_ec_burst_add ( struct acpi_device *device);
79static int acpi_ec_polling_add ( struct acpi_device *device);
80 70
81static struct acpi_driver acpi_ec_driver = { 71static struct acpi_driver acpi_ec_driver = {
82 .name = ACPI_EC_DRIVER_NAME, 72 .name = ACPI_EC_DRIVER_NAME,
83 .class = ACPI_EC_CLASS, 73 .class = ACPI_EC_CLASS,
84 .ids = ACPI_EC_HID, 74 .ids = ACPI_EC_HID,
85 .ops = { 75 .ops = {
86 .add = acpi_ec_polling_add, 76 .add = acpi_ec_polling_add,
87 .remove = acpi_ec_remove, 77 .remove = acpi_ec_remove,
88 .start = acpi_ec_start, 78 .start = acpi_ec_start,
89 .stop = acpi_ec_stop, 79 .stop = acpi_ec_stop,
90 }, 80 },
91}; 81};
92union acpi_ec { 82union acpi_ec {
93 struct { 83 struct {
94 u32 mode; 84 u32 mode;
95 acpi_handle handle; 85 acpi_handle handle;
96 unsigned long uid; 86 unsigned long uid;
97 unsigned long gpe_bit; 87 unsigned long gpe_bit;
98 struct acpi_generic_address status_addr; 88 struct acpi_generic_address status_addr;
99 struct acpi_generic_address command_addr; 89 struct acpi_generic_address command_addr;
100 struct acpi_generic_address data_addr; 90 struct acpi_generic_address data_addr;
101 unsigned long global_lock; 91 unsigned long global_lock;
102 } common; 92 } common;
103 93
104 struct { 94 struct {
105 u32 mode; 95 u32 mode;
106 acpi_handle handle; 96 acpi_handle handle;
107 unsigned long uid; 97 unsigned long uid;
108 unsigned long gpe_bit; 98 unsigned long gpe_bit;
109 struct acpi_generic_address status_addr; 99 struct acpi_generic_address status_addr;
110 struct acpi_generic_address command_addr; 100 struct acpi_generic_address command_addr;
111 struct acpi_generic_address data_addr; 101 struct acpi_generic_address data_addr;
112 unsigned long global_lock; 102 unsigned long global_lock;
113 unsigned int expect_event; 103 unsigned int expect_event;
114 atomic_t leaving_burst; /* 0 : No, 1 : Yes, 2: abort*/ 104 atomic_t leaving_burst; /* 0 : No, 1 : Yes, 2: abort */
115 atomic_t pending_gpe; 105 atomic_t pending_gpe;
116 struct semaphore sem; 106 struct semaphore sem;
117 wait_queue_head_t wait; 107 wait_queue_head_t wait;
118 }burst; 108 } burst;
119 109
120 struct { 110 struct {
121 u32 mode; 111 u32 mode;
122 acpi_handle handle; 112 acpi_handle handle;
123 unsigned long uid; 113 unsigned long uid;
124 unsigned long gpe_bit; 114 unsigned long gpe_bit;
125 struct acpi_generic_address status_addr; 115 struct acpi_generic_address status_addr;
126 struct acpi_generic_address command_addr; 116 struct acpi_generic_address command_addr;
127 struct acpi_generic_address data_addr; 117 struct acpi_generic_address data_addr;
128 unsigned long global_lock; 118 unsigned long global_lock;
129 spinlock_t lock; 119 spinlock_t lock;
130 }polling; 120 } polling;
131}; 121};
132 122
133static int acpi_ec_polling_wait ( union acpi_ec *ec, u8 event); 123static int acpi_ec_polling_wait(union acpi_ec *ec, u8 event);
134static int acpi_ec_burst_wait(union acpi_ec *ec, unsigned int event); 124static int acpi_ec_burst_wait(union acpi_ec *ec, unsigned int event);
135static int acpi_ec_polling_read ( union acpi_ec *ec, u8 address, u32 *data); 125static int acpi_ec_polling_read(union acpi_ec *ec, u8 address, u32 * data);
136static int acpi_ec_burst_read( union acpi_ec *ec, u8 address, u32 *data); 126static int acpi_ec_burst_read(union acpi_ec *ec, u8 address, u32 * data);
137static int acpi_ec_polling_write ( union acpi_ec *ec, u8 address, u8 data); 127static int acpi_ec_polling_write(union acpi_ec *ec, u8 address, u8 data);
138static int acpi_ec_burst_write ( union acpi_ec *ec, u8 address, u8 data); 128static int acpi_ec_burst_write(union acpi_ec *ec, u8 address, u8 data);
139static int acpi_ec_polling_query ( union acpi_ec *ec, u32 *data); 129static int acpi_ec_polling_query(union acpi_ec *ec, u32 * data);
140static int acpi_ec_burst_query ( union acpi_ec *ec, u32 *data); 130static int acpi_ec_burst_query(union acpi_ec *ec, u32 * data);
141static void acpi_ec_gpe_polling_query ( void *ec_cxt); 131static void acpi_ec_gpe_polling_query(void *ec_cxt);
142static void acpi_ec_gpe_burst_query ( void *ec_cxt); 132static void acpi_ec_gpe_burst_query(void *ec_cxt);
143static u32 acpi_ec_gpe_polling_handler ( void *data); 133static u32 acpi_ec_gpe_polling_handler(void *data);
144static u32 acpi_ec_gpe_burst_handler ( void *data); 134static u32 acpi_ec_gpe_burst_handler(void *data);
145static acpi_status __init 135static acpi_status __init
146acpi_fake_ecdt_polling_callback ( 136acpi_fake_ecdt_polling_callback(acpi_handle handle,
147 acpi_handle handle, 137 u32 Level, void *context, void **retval);
148 u32 Level,
149 void *context,
150 void **retval);
151 138
152static acpi_status __init 139static acpi_status __init
153acpi_fake_ecdt_burst_callback ( 140acpi_fake_ecdt_burst_callback(acpi_handle handle,
154 acpi_handle handle, 141 u32 Level, void *context, void **retval);
155 u32 Level, 142
156 void *context, 143static int __init acpi_ec_polling_get_real_ecdt(void);
157 void **retval); 144static int __init acpi_ec_burst_get_real_ecdt(void);
158
159static int __init
160acpi_ec_polling_get_real_ecdt(void);
161static int __init
162acpi_ec_burst_get_real_ecdt(void);
163/* 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 */
164static union acpi_ec *ec_ecdt; 146static union acpi_ec *ec_ecdt;
165 147
166/* External interfaces use first EC only, so remember */ 148/* External interfaces use first EC only, so remember */
167static struct acpi_device *first_ec; 149static struct acpi_device *first_ec;
@@ -173,30 +155,24 @@ static int acpi_ec_polling_mode = EC_POLLING;
173 155
174static inline u32 acpi_ec_read_status(union acpi_ec *ec) 156static inline u32 acpi_ec_read_status(union acpi_ec *ec)
175{ 157{
176 u32 status = 0; 158 u32 status = 0;
177 159
178 acpi_hw_low_level_read(8, &status, &ec->common.status_addr); 160 acpi_hw_low_level_read(8, &status, &ec->common.status_addr);
179 return status; 161 return status;
180} 162}
181 163
182static int 164static int acpi_ec_wait(union acpi_ec *ec, u8 event)
183acpi_ec_wait (
184 union acpi_ec *ec,
185 u8 event)
186{ 165{
187 if (acpi_ec_polling_mode) 166 if (acpi_ec_polling_mode)
188 return acpi_ec_polling_wait (ec, event); 167 return acpi_ec_polling_wait(ec, event);
189 else 168 else
190 return acpi_ec_burst_wait (ec, event); 169 return acpi_ec_burst_wait(ec, event);
191} 170}
192 171
193static int 172static int acpi_ec_polling_wait(union acpi_ec *ec, u8 event)
194acpi_ec_polling_wait (
195 union acpi_ec *ec,
196 u8 event)
197{ 173{
198 u32 acpi_ec_status = 0; 174 u32 acpi_ec_status = 0;
199 u32 i = ACPI_EC_UDELAY_COUNT; 175 u32 i = ACPI_EC_UDELAY_COUNT;
200 176
201 if (!ec) 177 if (!ec)
202 return -EINVAL; 178 return -EINVAL;
@@ -205,19 +181,21 @@ acpi_ec_polling_wait (
205 switch (event) { 181 switch (event) {
206 case ACPI_EC_EVENT_OBF: 182 case ACPI_EC_EVENT_OBF:
207 do { 183 do {
208 acpi_hw_low_level_read(8, &acpi_ec_status, &ec->common.status_addr); 184 acpi_hw_low_level_read(8, &acpi_ec_status,
185 &ec->common.status_addr);
209 if (acpi_ec_status & ACPI_EC_FLAG_OBF) 186 if (acpi_ec_status & ACPI_EC_FLAG_OBF)
210 return 0; 187 return 0;
211 udelay(ACPI_EC_UDELAY); 188 udelay(ACPI_EC_UDELAY);
212 } while (--i>0); 189 } while (--i > 0);
213 break; 190 break;
214 case ACPI_EC_EVENT_IBE: 191 case ACPI_EC_EVENT_IBE:
215 do { 192 do {
216 acpi_hw_low_level_read(8, &acpi_ec_status, &ec->common.status_addr); 193 acpi_hw_low_level_read(8, &acpi_ec_status,
194 &ec->common.status_addr);
217 if (!(acpi_ec_status & ACPI_EC_FLAG_IBF)) 195 if (!(acpi_ec_status & ACPI_EC_FLAG_IBF))
218 return 0; 196 return 0;
219 udelay(ACPI_EC_UDELAY); 197 udelay(ACPI_EC_UDELAY);
220 } while (--i>0); 198 } while (--i > 0);
221 break; 199 break;
222 default: 200 default:
223 return -EINVAL; 201 return -EINVAL;
@@ -227,25 +205,36 @@ acpi_ec_polling_wait (
227} 205}
228static int acpi_ec_burst_wait(union acpi_ec *ec, unsigned int event) 206static int acpi_ec_burst_wait(union acpi_ec *ec, unsigned int event)
229{ 207{
230 int result = 0; 208 int result = 0;
231 209
232 ACPI_FUNCTION_TRACE("acpi_ec_wait"); 210 ACPI_FUNCTION_TRACE("acpi_ec_wait");
233 211
234 ec->burst.expect_event = event; 212 ec->burst.expect_event = event;
235 smp_mb(); 213 smp_mb();
236 214
237 result = wait_event_interruptible_timeout(ec->burst.wait, 215 switch (event) {
238 !ec->burst.expect_event, 216 case ACPI_EC_EVENT_OBF:
239 msecs_to_jiffies(ACPI_EC_DELAY)); 217 if (acpi_ec_read_status(ec) & event) {
240 218 ec->burst.expect_event = 0;
241 ec->burst.expect_event = 0; 219 return_VALUE(0);
242 smp_mb(); 220 }
221 break;
243 222
244 if (result < 0){ 223 case ACPI_EC_EVENT_IBE:
245 ACPI_DEBUG_PRINT((ACPI_DB_ERROR," result = %d ", result)); 224 if (~acpi_ec_read_status(ec) & event) {
246 return_VALUE(result); 225 ec->burst.expect_event = 0;
226 return_VALUE(0);
227 }
228 break;
247 } 229 }
248 230
231 result = wait_event_timeout(ec->burst.wait,
232 !ec->burst.expect_event,
233 msecs_to_jiffies(ACPI_EC_DELAY));
234
235 ec->burst.expect_event = 0;
236 smp_mb();
237
249 /* 238 /*
250 * Verify that the event in question has actually happened by 239 * Verify that the event in question has actually happened by
251 * querying EC status. Do the check even if operation timed-out 240 * querying EC status. Do the check even if operation timed-out
@@ -266,95 +255,65 @@ static int acpi_ec_burst_wait(union acpi_ec *ec, unsigned int event)
266 return_VALUE(-ETIME); 255 return_VALUE(-ETIME);
267} 256}
268 257
269 258static int acpi_ec_enter_burst_mode(union acpi_ec *ec)
270
271static int
272acpi_ec_enter_burst_mode (
273 union acpi_ec *ec)
274{ 259{
275 u32 tmp = 0; 260 u32 tmp = 0;
276 int status = 0; 261 int status = 0;
277 262
278 ACPI_FUNCTION_TRACE("acpi_ec_enter_burst_mode"); 263 ACPI_FUNCTION_TRACE("acpi_ec_enter_burst_mode");
279 264
280 status = acpi_ec_read_status(ec); 265 status = acpi_ec_read_status(ec);
281 if (status != -EINVAL && 266 if (status != -EINVAL && !(status & ACPI_EC_FLAG_BURST)) {
282 !(status & ACPI_EC_FLAG_BURST)){ 267 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
283 acpi_hw_low_level_write(8, ACPI_EC_BURST_ENABLE, &ec->common.command_addr); 268 if (status)
269 goto end;
270 acpi_hw_low_level_write(8, ACPI_EC_BURST_ENABLE,
271 &ec->common.command_addr);
284 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF); 272 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
285 if (status){ 273 if (status)
286 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
287 return_VALUE(-EINVAL); 274 return_VALUE(-EINVAL);
288 }
289 acpi_hw_low_level_read(8, &tmp, &ec->common.data_addr); 275 acpi_hw_low_level_read(8, &tmp, &ec->common.data_addr);
290 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 276 if (tmp != 0x90) { /* Burst ACK byte */
291 if(tmp != 0x90 ) {/* Burst ACK byte*/
292 return_VALUE(-EINVAL); 277 return_VALUE(-EINVAL);
293 } 278 }
294 } 279 }
295 280
296 atomic_set(&ec->burst.leaving_burst , 0); 281 atomic_set(&ec->burst.leaving_burst, 0);
297 return_VALUE(0); 282 return_VALUE(0);
283 end:
284 printk("Error in acpi_ec_wait\n");
285 return_VALUE(-1);
298} 286}
299 287
300static int 288static int acpi_ec_leave_burst_mode(union acpi_ec *ec)
301acpi_ec_leave_burst_mode (
302 union acpi_ec *ec)
303{ 289{
304 int status =0;
305 290
306 ACPI_FUNCTION_TRACE("acpi_ec_leave_burst_mode"); 291 ACPI_FUNCTION_TRACE("acpi_ec_leave_burst_mode");
307 292
308 atomic_set(&ec->burst.leaving_burst , 1); 293 atomic_set(&ec->burst.leaving_burst, 1);
309 status = acpi_ec_read_status(ec);
310 if (status != -EINVAL &&
311 (status & ACPI_EC_FLAG_BURST)){
312 acpi_hw_low_level_write(8, ACPI_EC_BURST_DISABLE, &ec->common.command_addr);
313 status = acpi_ec_wait(ec, ACPI_EC_FLAG_IBF);
314 if (status){
315 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
316 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,"------->wait fail\n"));
317 return_VALUE(-EINVAL);
318 }
319 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
320 status = acpi_ec_read_status(ec);
321 }
322
323 return_VALUE(0); 294 return_VALUE(0);
324} 295}
325 296
326static int 297static int acpi_ec_read(union acpi_ec *ec, u8 address, u32 * data)
327acpi_ec_read (
328 union acpi_ec *ec,
329 u8 address,
330 u32 *data)
331{ 298{
332 if (acpi_ec_polling_mode) 299 if (acpi_ec_polling_mode)
333 return acpi_ec_polling_read(ec, address, data); 300 return acpi_ec_polling_read(ec, address, data);
334 else 301 else
335 return acpi_ec_burst_read(ec, address, data); 302 return acpi_ec_burst_read(ec, address, data);
336} 303}
337static int 304static int acpi_ec_write(union acpi_ec *ec, u8 address, u8 data)
338acpi_ec_write (
339 union acpi_ec *ec,
340 u8 address,
341 u8 data)
342{ 305{
343 if (acpi_ec_polling_mode) 306 if (acpi_ec_polling_mode)
344 return acpi_ec_polling_write(ec, address, data); 307 return acpi_ec_polling_write(ec, address, data);
345 else 308 else
346 return acpi_ec_burst_write(ec, address, data); 309 return acpi_ec_burst_write(ec, address, data);
347} 310}
348static int 311static int acpi_ec_polling_read(union acpi_ec *ec, u8 address, u32 * data)
349acpi_ec_polling_read (
350 union acpi_ec *ec,
351 u8 address,
352 u32 *data)
353{ 312{
354 acpi_status status = AE_OK; 313 acpi_status status = AE_OK;
355 int result = 0; 314 int result = 0;
356 unsigned long flags = 0; 315 unsigned long flags = 0;
357 u32 glk = 0; 316 u32 glk = 0;
358 317
359 ACPI_FUNCTION_TRACE("acpi_ec_read"); 318 ACPI_FUNCTION_TRACE("acpi_ec_read");
360 319
@@ -371,7 +330,8 @@ acpi_ec_polling_read (
371 330
372 spin_lock_irqsave(&ec->polling.lock, flags); 331 spin_lock_irqsave(&ec->polling.lock, flags);
373 332
374 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_READ, &ec->common.command_addr); 333 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_READ,
334 &ec->common.command_addr);
375 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 335 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
376 if (result) 336 if (result)
377 goto end; 337 goto end;
@@ -384,9 +344,9 @@ acpi_ec_polling_read (
384 acpi_hw_low_level_read(8, data, &ec->common.data_addr); 344 acpi_hw_low_level_read(8, data, &ec->common.data_addr);
385 345
386 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Read [%02x] from address [%02x]\n", 346 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Read [%02x] from address [%02x]\n",
387 *data, address)); 347 *data, address));
388 348
389end: 349 end:
390 spin_unlock_irqrestore(&ec->polling.lock, flags); 350 spin_unlock_irqrestore(&ec->polling.lock, flags);
391 351
392 if (ec->common.global_lock) 352 if (ec->common.global_lock)
@@ -395,17 +355,12 @@ end:
395 return_VALUE(result); 355 return_VALUE(result);
396} 356}
397 357
398 358static int acpi_ec_polling_write(union acpi_ec *ec, u8 address, u8 data)
399static int
400acpi_ec_polling_write (
401 union acpi_ec *ec,
402 u8 address,
403 u8 data)
404{ 359{
405 int result = 0; 360 int result = 0;
406 acpi_status status = AE_OK; 361 acpi_status status = AE_OK;
407 unsigned long flags = 0; 362 unsigned long flags = 0;
408 u32 glk = 0; 363 u32 glk = 0;
409 364
410 ACPI_FUNCTION_TRACE("acpi_ec_write"); 365 ACPI_FUNCTION_TRACE("acpi_ec_write");
411 366
@@ -420,7 +375,8 @@ acpi_ec_polling_write (
420 375
421 spin_lock_irqsave(&ec->polling.lock, flags); 376 spin_lock_irqsave(&ec->polling.lock, flags);
422 377
423 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_WRITE, &ec->common.command_addr); 378 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_WRITE,
379 &ec->common.command_addr);
424 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 380 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
425 if (result) 381 if (result)
426 goto end; 382 goto end;
@@ -436,9 +392,9 @@ acpi_ec_polling_write (
436 goto end; 392 goto end;
437 393
438 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Wrote [%02x] to address [%02x]\n", 394 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Wrote [%02x] to address [%02x]\n",
439 data, address)); 395 data, address));
440 396
441end: 397 end:
442 spin_unlock_irqrestore(&ec->polling.lock, flags); 398 spin_unlock_irqrestore(&ec->polling.lock, flags);
443 399
444 if (ec->common.global_lock) 400 if (ec->common.global_lock)
@@ -447,21 +403,16 @@ end:
447 return_VALUE(result); 403 return_VALUE(result);
448} 404}
449 405
450static int 406static int acpi_ec_burst_read(union acpi_ec *ec, u8 address, u32 * data)
451acpi_ec_burst_read (
452 union acpi_ec *ec,
453 u8 address,
454 u32 *data)
455{ 407{
456 int status = 0; 408 int status = 0;
457 u32 glk; 409 u32 glk;
458 410
459 ACPI_FUNCTION_TRACE("acpi_ec_read"); 411 ACPI_FUNCTION_TRACE("acpi_ec_read");
460 412
461 if (!ec || !data) 413 if (!ec || !data)
462 return_VALUE(-EINVAL); 414 return_VALUE(-EINVAL);
463 415
464retry:
465 *data = 0; 416 *data = 0;
466 417
467 if (ec->common.global_lock) { 418 if (ec->common.global_lock) {
@@ -473,64 +424,49 @@ retry:
473 WARN_ON(in_interrupt()); 424 WARN_ON(in_interrupt());
474 down(&ec->burst.sem); 425 down(&ec->burst.sem);
475 426
476 if(acpi_ec_enter_burst_mode(ec)) 427 acpi_ec_enter_burst_mode(ec);
477 goto end;
478
479 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_READ, &ec->common.command_addr);
480 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 428 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
481 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
482 if (status) { 429 if (status) {
430 printk("read EC, IB not empty\n");
483 goto end; 431 goto end;
484 } 432 }
433 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_READ,
434 &ec->common.command_addr);
435 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
436 if (status) {
437 printk("read EC, IB not empty\n");
438 }
485 439
486 acpi_hw_low_level_write(8, address, &ec->common.data_addr); 440 acpi_hw_low_level_write(8, address, &ec->common.data_addr);
487 status= acpi_ec_wait(ec, ACPI_EC_EVENT_OBF); 441 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
488 if (status){ 442 if (status) {
489 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 443 printk("read EC, OB not full\n");
490 goto end; 444 goto end;
491 } 445 }
492
493 acpi_hw_low_level_read(8, data, &ec->common.data_addr); 446 acpi_hw_low_level_read(8, data, &ec->common.data_addr);
494 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
495
496 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Read [%02x] from address [%02x]\n", 447 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Read [%02x] from address [%02x]\n",
497 *data, address)); 448 *data, address));
498 449
499end: 450 end:
500 acpi_ec_leave_burst_mode(ec); 451 acpi_ec_leave_burst_mode(ec);
501 up(&ec->burst.sem); 452 up(&ec->burst.sem);
502 453
503 if (ec->common.global_lock) 454 if (ec->common.global_lock)
504 acpi_release_global_lock(glk); 455 acpi_release_global_lock(glk);
505 456
506 if(atomic_read(&ec->burst.leaving_burst) == 2){
507 ACPI_DEBUG_PRINT((ACPI_DB_INFO,"aborted, retry ...\n"));
508 while(atomic_read(&ec->burst.pending_gpe)){
509 msleep(1);
510 }
511 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
512 goto retry;
513 }
514
515 return_VALUE(status); 457 return_VALUE(status);
516} 458}
517 459
518 460static int acpi_ec_burst_write(union acpi_ec *ec, u8 address, u8 data)
519static int
520acpi_ec_burst_write (
521 union acpi_ec *ec,
522 u8 address,
523 u8 data)
524{ 461{
525 int status = 0; 462 int status = 0;
526 u32 glk; 463 u32 glk;
527 u32 tmp;
528 464
529 ACPI_FUNCTION_TRACE("acpi_ec_write"); 465 ACPI_FUNCTION_TRACE("acpi_ec_write");
530 466
531 if (!ec) 467 if (!ec)
532 return_VALUE(-EINVAL); 468 return_VALUE(-EINVAL);
533retry: 469
534 if (ec->common.global_lock) { 470 if (ec->common.global_lock) {
535 status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk); 471 status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
536 if (ACPI_FAILURE(status)) 472 if (ACPI_FAILURE(status))
@@ -540,69 +476,43 @@ retry:
540 WARN_ON(in_interrupt()); 476 WARN_ON(in_interrupt());
541 down(&ec->burst.sem); 477 down(&ec->burst.sem);
542 478
543 if(acpi_ec_enter_burst_mode(ec)) 479 acpi_ec_enter_burst_mode(ec);
544 goto end;
545 480
546 status = acpi_ec_read_status(ec); 481 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
547 if (status != -EINVAL && 482 if (status) {
548 !(status & ACPI_EC_FLAG_BURST)){ 483 printk("write EC, IB not empty\n");
549 acpi_hw_low_level_write(8, ACPI_EC_BURST_ENABLE, &ec->common.command_addr);
550 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
551 if (status)
552 goto end;
553 acpi_hw_low_level_read(8, &tmp, &ec->common.data_addr);
554 if(tmp != 0x90 ) /* Burst ACK byte*/
555 goto end;
556 } 484 }
557 /*Now we are in burst mode*/ 485 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_WRITE,
558 486 &ec->common.command_addr);
559 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_WRITE, &ec->common.command_addr);
560 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 487 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
561 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 488 if (status) {
562 if (status){ 489 printk("write EC, IB not empty\n");
563 goto end;
564 } 490 }
565 491
566 acpi_hw_low_level_write(8, address, &ec->common.data_addr); 492 acpi_hw_low_level_write(8, address, &ec->common.data_addr);
567 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 493 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
568 if (status){ 494 if (status) {
569 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 495 printk("write EC, IB not empty\n");
570 goto end;
571 } 496 }
572 497
573 acpi_hw_low_level_write(8, data, &ec->common.data_addr); 498 acpi_hw_low_level_write(8, data, &ec->common.data_addr);
574 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
575 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
576 if (status)
577 goto end;
578 499
579 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Wrote [%02x] to address [%02x]\n", 500 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Wrote [%02x] to address [%02x]\n",
580 data, address)); 501 data, address));
581 502
582end:
583 acpi_ec_leave_burst_mode(ec); 503 acpi_ec_leave_burst_mode(ec);
584 up(&ec->burst.sem); 504 up(&ec->burst.sem);
585 505
586 if (ec->common.global_lock) 506 if (ec->common.global_lock)
587 acpi_release_global_lock(glk); 507 acpi_release_global_lock(glk);
588 508
589 if(atomic_read(&ec->burst.leaving_burst) == 2){
590 ACPI_DEBUG_PRINT((ACPI_DB_INFO,"aborted, retry ...\n"));
591 while(atomic_read(&ec->burst.pending_gpe)){
592 msleep(1);
593 }
594 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
595 goto retry;
596 }
597
598 return_VALUE(status); 509 return_VALUE(status);
599} 510}
600 511
601/* 512/*
602 * Externally callable EC access functions. For now, assume 1 EC only 513 * Externally callable EC access functions. For now, assume 1 EC only
603 */ 514 */
604int 515int ec_read(u8 addr, u8 * val)
605ec_read(u8 addr, u8 *val)
606{ 516{
607 union acpi_ec *ec; 517 union acpi_ec *ec;
608 int err; 518 int err;
@@ -618,14 +528,13 @@ ec_read(u8 addr, u8 *val)
618 if (!err) { 528 if (!err) {
619 *val = temp_data; 529 *val = temp_data;
620 return 0; 530 return 0;
621 } 531 } else
622 else
623 return err; 532 return err;
624} 533}
534
625EXPORT_SYMBOL(ec_read); 535EXPORT_SYMBOL(ec_read);
626 536
627int 537int ec_write(u8 addr, u8 val)
628ec_write(u8 addr, u8 val)
629{ 538{
630 union acpi_ec *ec; 539 union acpi_ec *ec;
631 int err; 540 int err;
@@ -639,27 +548,22 @@ ec_write(u8 addr, u8 val)
639 548
640 return err; 549 return err;
641} 550}
551
642EXPORT_SYMBOL(ec_write); 552EXPORT_SYMBOL(ec_write);
643 553
644static int 554static int acpi_ec_query(union acpi_ec *ec, u32 * data)
645acpi_ec_query (
646 union acpi_ec *ec,
647 u32 *data)
648{ 555{
649 if (acpi_ec_polling_mode) 556 if (acpi_ec_polling_mode)
650 return acpi_ec_polling_query(ec, data); 557 return acpi_ec_polling_query(ec, data);
651 else 558 else
652 return acpi_ec_burst_query(ec, data); 559 return acpi_ec_burst_query(ec, data);
653} 560}
654static int 561static int acpi_ec_polling_query(union acpi_ec *ec, u32 * data)
655acpi_ec_polling_query (
656 union acpi_ec *ec,
657 u32 *data)
658{ 562{
659 int result = 0; 563 int result = 0;
660 acpi_status status = AE_OK; 564 acpi_status status = AE_OK;
661 unsigned long flags = 0; 565 unsigned long flags = 0;
662 u32 glk = 0; 566 u32 glk = 0;
663 567
664 ACPI_FUNCTION_TRACE("acpi_ec_query"); 568 ACPI_FUNCTION_TRACE("acpi_ec_query");
665 569
@@ -681,7 +585,8 @@ acpi_ec_polling_query (
681 */ 585 */
682 spin_lock_irqsave(&ec->polling.lock, flags); 586 spin_lock_irqsave(&ec->polling.lock, flags);
683 587
684 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_QUERY, &ec->common.command_addr); 588 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_QUERY,
589 &ec->common.command_addr);
685 result = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF); 590 result = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
686 if (result) 591 if (result)
687 goto end; 592 goto end;
@@ -690,7 +595,7 @@ acpi_ec_polling_query (
690 if (!*data) 595 if (!*data)
691 result = -ENODATA; 596 result = -ENODATA;
692 597
693end: 598 end:
694 spin_unlock_irqrestore(&ec->polling.lock, flags); 599 spin_unlock_irqrestore(&ec->polling.lock, flags);
695 600
696 if (ec->common.global_lock) 601 if (ec->common.global_lock)
@@ -698,13 +603,10 @@ end:
698 603
699 return_VALUE(result); 604 return_VALUE(result);
700} 605}
701static int 606static int acpi_ec_burst_query(union acpi_ec *ec, u32 * data)
702acpi_ec_burst_query (
703 union acpi_ec *ec,
704 u32 *data)
705{ 607{
706 int status = 0; 608 int status = 0;
707 u32 glk; 609 u32 glk;
708 610
709 ACPI_FUNCTION_TRACE("acpi_ec_query"); 611 ACPI_FUNCTION_TRACE("acpi_ec_query");
710 612
@@ -719,70 +621,64 @@ acpi_ec_burst_query (
719 } 621 }
720 622
721 down(&ec->burst.sem); 623 down(&ec->burst.sem);
722 if(acpi_ec_enter_burst_mode(ec)) 624
625 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
626 if (status) {
627 printk("query EC, IB not empty\n");
723 goto end; 628 goto end;
629 }
724 /* 630 /*
725 * Query the EC to find out which _Qxx method we need to evaluate. 631 * Query the EC to find out which _Qxx method we need to evaluate.
726 * Note that successful completion of the query causes the ACPI_EC_SCI 632 * Note that successful completion of the query causes the ACPI_EC_SCI
727 * bit to be cleared (and thus clearing the interrupt source). 633 * bit to be cleared (and thus clearing the interrupt source).
728 */ 634 */
729 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_QUERY, &ec->common.command_addr); 635 acpi_hw_low_level_write(8, ACPI_EC_COMMAND_QUERY,
636 &ec->common.command_addr);
730 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF); 637 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
731 if (status){ 638 if (status) {
732 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 639 printk("query EC, OB not full\n");
733 goto end; 640 goto end;
734 } 641 }
735 642
736 acpi_hw_low_level_read(8, data, &ec->common.data_addr); 643 acpi_hw_low_level_read(8, data, &ec->common.data_addr);
737 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
738 if (!*data) 644 if (!*data)
739 status = -ENODATA; 645 status = -ENODATA;
740 646
741end: 647 end:
742 acpi_ec_leave_burst_mode(ec);
743 up(&ec->burst.sem); 648 up(&ec->burst.sem);
744 649
745 if (ec->common.global_lock) 650 if (ec->common.global_lock)
746 acpi_release_global_lock(glk); 651 acpi_release_global_lock(glk);
747 652
748 if(atomic_read(&ec->burst.leaving_burst) == 2){
749 ACPI_DEBUG_PRINT((ACPI_DB_INFO,"aborted, retry ...\n"));
750 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
751 status = -ENODATA;
752 }
753 return_VALUE(status); 653 return_VALUE(status);
754} 654}
755 655
756
757/* -------------------------------------------------------------------------- 656/* --------------------------------------------------------------------------
758 Event Management 657 Event Management
759 -------------------------------------------------------------------------- */ 658 -------------------------------------------------------------------------- */
760 659
761union acpi_ec_query_data { 660union acpi_ec_query_data {
762 acpi_handle handle; 661 acpi_handle handle;
763 u8 data; 662 u8 data;
764}; 663};
765 664
766static void 665static void acpi_ec_gpe_query(void *ec_cxt)
767acpi_ec_gpe_query (
768 void *ec_cxt)
769{ 666{
770 if (acpi_ec_polling_mode) 667 if (acpi_ec_polling_mode)
771 acpi_ec_gpe_polling_query(ec_cxt); 668 acpi_ec_gpe_polling_query(ec_cxt);
772 else 669 else
773 acpi_ec_gpe_burst_query(ec_cxt); 670 acpi_ec_gpe_burst_query(ec_cxt);
774} 671}
775 672
776static void 673static void acpi_ec_gpe_polling_query(void *ec_cxt)
777acpi_ec_gpe_polling_query (
778 void *ec_cxt)
779{ 674{
780 union acpi_ec *ec = (union acpi_ec *) ec_cxt; 675 union acpi_ec *ec = (union acpi_ec *)ec_cxt;
781 u32 value = 0; 676 u32 value = 0;
782 unsigned long flags = 0; 677 unsigned long flags = 0;
783 static char object_name[5] = {'_','Q','0','0','\0'}; 678 static char object_name[5] = { '_', 'Q', '0', '0', '\0' };
784 const char hex[] = {'0','1','2','3','4','5','6','7', 679 const char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7',
785 '8','9','A','B','C','D','E','F'}; 680 '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
681 };
786 682
787 ACPI_FUNCTION_TRACE("acpi_ec_gpe_query"); 683 ACPI_FUNCTION_TRACE("acpi_ec_gpe_query");
788 684
@@ -812,19 +708,18 @@ acpi_ec_gpe_polling_query (
812 708
813 acpi_evaluate_object(ec->common.handle, object_name, NULL, NULL); 709 acpi_evaluate_object(ec->common.handle, object_name, NULL, NULL);
814 710
815end: 711 end:
816 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 712 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
817} 713}
818static void 714static void acpi_ec_gpe_burst_query(void *ec_cxt)
819acpi_ec_gpe_burst_query (
820 void *ec_cxt)
821{ 715{
822 union acpi_ec *ec = (union acpi_ec *) ec_cxt; 716 union acpi_ec *ec = (union acpi_ec *)ec_cxt;
823 u32 value; 717 u32 value;
824 int result = -ENODATA; 718 int result = -ENODATA;
825 static char object_name[5] = {'_','Q','0','0','\0'}; 719 static char object_name[5] = { '_', 'Q', '0', '0', '\0' };
826 const char hex[] = {'0','1','2','3','4','5','6','7', 720 const char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7',
827 '8','9','A','B','C','D','E','F'}; 721 '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
722 };
828 723
829 ACPI_FUNCTION_TRACE("acpi_ec_gpe_query"); 724 ACPI_FUNCTION_TRACE("acpi_ec_gpe_query");
830 725
@@ -840,26 +735,22 @@ acpi_ec_gpe_burst_query (
840 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluating %s\n", object_name)); 735 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluating %s\n", object_name));
841 736
842 acpi_evaluate_object(ec->common.handle, object_name, NULL, NULL); 737 acpi_evaluate_object(ec->common.handle, object_name, NULL, NULL);
843end: 738 end:
844 atomic_dec(&ec->burst.pending_gpe); 739 atomic_dec(&ec->burst.pending_gpe);
845 return; 740 return;
846} 741}
847 742
848static u32 743static u32 acpi_ec_gpe_handler(void *data)
849acpi_ec_gpe_handler (
850 void *data)
851{ 744{
852 if (acpi_ec_polling_mode) 745 if (acpi_ec_polling_mode)
853 return acpi_ec_gpe_polling_handler(data); 746 return acpi_ec_gpe_polling_handler(data);
854 else 747 else
855 return acpi_ec_gpe_burst_handler(data); 748 return acpi_ec_gpe_burst_handler(data);
856} 749}
857static u32 750static u32 acpi_ec_gpe_polling_handler(void *data)
858acpi_ec_gpe_polling_handler (
859 void *data)
860{ 751{
861 acpi_status status = AE_OK; 752 acpi_status status = AE_OK;
862 union acpi_ec *ec = (union acpi_ec *) data; 753 union acpi_ec *ec = (union acpi_ec *)data;
863 754
864 if (!ec) 755 if (!ec)
865 return ACPI_INTERRUPT_NOT_HANDLED; 756 return ACPI_INTERRUPT_NOT_HANDLED;
@@ -867,61 +758,49 @@ acpi_ec_gpe_polling_handler (
867 acpi_disable_gpe(NULL, ec->common.gpe_bit, ACPI_ISR); 758 acpi_disable_gpe(NULL, ec->common.gpe_bit, ACPI_ISR);
868 759
869 status = acpi_os_queue_for_execution(OSD_PRIORITY_GPE, 760 status = acpi_os_queue_for_execution(OSD_PRIORITY_GPE,
870 acpi_ec_gpe_query, ec); 761 acpi_ec_gpe_query, ec);
871 762
872 if (status == AE_OK) 763 if (status == AE_OK)
873 return ACPI_INTERRUPT_HANDLED; 764 return ACPI_INTERRUPT_HANDLED;
874 else 765 else
875 return ACPI_INTERRUPT_NOT_HANDLED; 766 return ACPI_INTERRUPT_NOT_HANDLED;
876} 767}
877static u32 768static u32 acpi_ec_gpe_burst_handler(void *data)
878acpi_ec_gpe_burst_handler (
879 void *data)
880{ 769{
881 acpi_status status = AE_OK; 770 acpi_status status = AE_OK;
882 u32 value; 771 u32 value;
883 union acpi_ec *ec = (union acpi_ec *) data; 772 union acpi_ec *ec = (union acpi_ec *)data;
884 773
885 if (!ec) 774 if (!ec)
886 return ACPI_INTERRUPT_NOT_HANDLED; 775 return ACPI_INTERRUPT_NOT_HANDLED;
887 776
888 acpi_disable_gpe(NULL, ec->common.gpe_bit, ACPI_ISR); 777 acpi_clear_gpe(NULL, ec->common.gpe_bit, ACPI_ISR);
889
890 value = acpi_ec_read_status(ec); 778 value = acpi_ec_read_status(ec);
891 779
892 if((value & ACPI_EC_FLAG_IBF) && 780 switch (ec->burst.expect_event) {
893 !(value & ACPI_EC_FLAG_BURST) && 781 case ACPI_EC_EVENT_OBF:
894 (atomic_read(&ec->burst.leaving_burst) == 0)) { 782 if (!(value & ACPI_EC_FLAG_OBF))
895 /* 783 break;
896 * the embedded controller disables 784 case ACPI_EC_EVENT_IBE:
897 * burst mode for any reason other 785 if ((value & ACPI_EC_FLAG_IBF))
898 * than the burst disable command 786 break;
899 * to process critical event. 787 ec->burst.expect_event = 0;
900 */
901 atomic_set(&ec->burst.leaving_burst , 2); /* block current pending transaction
902 and retry */
903 wake_up(&ec->burst.wait); 788 wake_up(&ec->burst.wait);
904 }else { 789 return ACPI_INTERRUPT_HANDLED;
905 if ((ec->burst.expect_event == ACPI_EC_EVENT_OBF && 790 default:
906 (value & ACPI_EC_FLAG_OBF)) || 791 break;
907 (ec->burst.expect_event == ACPI_EC_EVENT_IBE &&
908 !(value & ACPI_EC_FLAG_IBF))) {
909 ec->burst.expect_event = 0;
910 wake_up(&ec->burst.wait);
911 return ACPI_INTERRUPT_HANDLED;
912 }
913 } 792 }
914 793
915 if (value & ACPI_EC_FLAG_SCI){ 794 if (value & ACPI_EC_FLAG_SCI) {
916 atomic_add(1, &ec->burst.pending_gpe) ; 795 atomic_add(1, &ec->burst.pending_gpe);
917 status = acpi_os_queue_for_execution(OSD_PRIORITY_GPE, 796 status = acpi_os_queue_for_execution(OSD_PRIORITY_GPE,
918 acpi_ec_gpe_query, ec); 797 acpi_ec_gpe_query, ec);
919 return status == AE_OK ? 798 return status == AE_OK ?
920 ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED; 799 ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
921 } 800 }
922 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_ISR); 801 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_ISR);
923 return status == AE_OK ? 802 return status == AE_OK ?
924 ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED; 803 ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
925} 804}
926 805
927/* -------------------------------------------------------------------------- 806/* --------------------------------------------------------------------------
@@ -929,37 +808,31 @@ acpi_ec_gpe_burst_handler (
929 -------------------------------------------------------------------------- */ 808 -------------------------------------------------------------------------- */
930 809
931static acpi_status 810static acpi_status
932acpi_ec_space_setup ( 811acpi_ec_space_setup(acpi_handle region_handle,
933 acpi_handle region_handle, 812 u32 function, void *handler_context, void **return_context)
934 u32 function,
935 void *handler_context,
936 void **return_context)
937{ 813{
938 /* 814 /*
939 * The EC object is in the handler context and is needed 815 * The EC object is in the handler context and is needed
940 * when calling the acpi_ec_space_handler. 816 * when calling the acpi_ec_space_handler.
941 */ 817 */
942 *return_context = (function != ACPI_REGION_DEACTIVATE) ? 818 *return_context = (function != ACPI_REGION_DEACTIVATE) ?
943 handler_context : NULL; 819 handler_context : NULL;
944 820
945 return AE_OK; 821 return AE_OK;
946} 822}
947 823
948
949static acpi_status 824static acpi_status
950acpi_ec_space_handler ( 825acpi_ec_space_handler(u32 function,
951 u32 function, 826 acpi_physical_address address,
952 acpi_physical_address address, 827 u32 bit_width,
953 u32 bit_width, 828 acpi_integer * value,
954 acpi_integer *value, 829 void *handler_context, void *region_context)
955 void *handler_context,
956 void *region_context)
957{ 830{
958 int result = 0; 831 int result = 0;
959 union acpi_ec *ec = NULL; 832 union acpi_ec *ec = NULL;
960 u64 temp = *value; 833 u64 temp = *value;
961 acpi_integer f_v = 0; 834 acpi_integer f_v = 0;
962 int i = 0; 835 int i = 0;
963 836
964 ACPI_FUNCTION_TRACE("acpi_ec_space_handler"); 837 ACPI_FUNCTION_TRACE("acpi_ec_space_handler");
965 838
@@ -967,17 +840,18 @@ acpi_ec_space_handler (
967 return_VALUE(AE_BAD_PARAMETER); 840 return_VALUE(AE_BAD_PARAMETER);
968 841
969 if (bit_width != 8 && acpi_strict) { 842 if (bit_width != 8 && acpi_strict) {
970 printk(KERN_WARNING PREFIX "acpi_ec_space_handler: bit_width should be 8\n"); 843 printk(KERN_WARNING PREFIX
844 "acpi_ec_space_handler: bit_width should be 8\n");
971 return_VALUE(AE_BAD_PARAMETER); 845 return_VALUE(AE_BAD_PARAMETER);
972 } 846 }
973 847
974 ec = (union acpi_ec *) handler_context; 848 ec = (union acpi_ec *)handler_context;
975 849
976next_byte: 850 next_byte:
977 switch (function) { 851 switch (function) {
978 case ACPI_READ: 852 case ACPI_READ:
979 temp = 0; 853 temp = 0;
980 result = acpi_ec_read(ec, (u8) address, (u32 *)&temp); 854 result = acpi_ec_read(ec, (u8) address, (u32 *) & temp);
981 break; 855 break;
982 case ACPI_WRITE: 856 case ACPI_WRITE:
983 result = acpi_ec_write(ec, (u8) address, (u8) temp); 857 result = acpi_ec_write(ec, (u8) address, (u8) temp);
@@ -1004,8 +878,7 @@ next_byte:
1004 *value = f_v; 878 *value = f_v;
1005 } 879 }
1006 880
1007 881 out:
1008out:
1009 switch (result) { 882 switch (result) {
1010 case -EINVAL: 883 case -EINVAL:
1011 return_VALUE(AE_BAD_PARAMETER); 884 return_VALUE(AE_BAD_PARAMETER);
@@ -1021,18 +894,15 @@ out:
1021 } 894 }
1022} 895}
1023 896
1024
1025/* -------------------------------------------------------------------------- 897/* --------------------------------------------------------------------------
1026 FS Interface (/proc) 898 FS Interface (/proc)
1027 -------------------------------------------------------------------------- */ 899 -------------------------------------------------------------------------- */
1028 900
1029static struct proc_dir_entry *acpi_ec_dir; 901static struct proc_dir_entry *acpi_ec_dir;
1030
1031 902
1032static int 903static int acpi_ec_read_info(struct seq_file *seq, void *offset)
1033acpi_ec_read_info (struct seq_file *seq, void *offset)
1034{ 904{
1035 union acpi_ec *ec = (union acpi_ec *) seq->private; 905 union acpi_ec *ec = (union acpi_ec *)seq->private;
1036 906
1037 ACPI_FUNCTION_TRACE("acpi_ec_read_info"); 907 ACPI_FUNCTION_TRACE("acpi_ec_read_info");
1038 908
@@ -1040,14 +910,15 @@ acpi_ec_read_info (struct seq_file *seq, void *offset)
1040 goto end; 910 goto end;
1041 911
1042 seq_printf(seq, "gpe bit: 0x%02x\n", 912 seq_printf(seq, "gpe bit: 0x%02x\n",
1043 (u32) ec->common.gpe_bit); 913 (u32) ec->common.gpe_bit);
1044 seq_printf(seq, "ports: 0x%02x, 0x%02x\n", 914 seq_printf(seq, "ports: 0x%02x, 0x%02x\n",
1045 (u32) ec->common.status_addr.address, (u32) ec->common.data_addr.address); 915 (u32) ec->common.status_addr.address,
916 (u32) ec->common.data_addr.address);
1046 seq_printf(seq, "use global lock: %s\n", 917 seq_printf(seq, "use global lock: %s\n",
1047 ec->common.global_lock?"yes":"no"); 918 ec->common.global_lock ? "yes" : "no");
1048 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 919 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
1049 920
1050end: 921 end:
1051 return_VALUE(0); 922 return_VALUE(0);
1052} 923}
1053 924
@@ -1057,34 +928,32 @@ static int acpi_ec_info_open_fs(struct inode *inode, struct file *file)
1057} 928}
1058 929
1059static struct file_operations acpi_ec_info_ops = { 930static struct file_operations acpi_ec_info_ops = {
1060 .open = acpi_ec_info_open_fs, 931 .open = acpi_ec_info_open_fs,
1061 .read = seq_read, 932 .read = seq_read,
1062 .llseek = seq_lseek, 933 .llseek = seq_lseek,
1063 .release = single_release, 934 .release = single_release,
1064 .owner = THIS_MODULE, 935 .owner = THIS_MODULE,
1065}; 936};
1066 937
1067static int 938static int acpi_ec_add_fs(struct acpi_device *device)
1068acpi_ec_add_fs (
1069 struct acpi_device *device)
1070{ 939{
1071 struct proc_dir_entry *entry = NULL; 940 struct proc_dir_entry *entry = NULL;
1072 941
1073 ACPI_FUNCTION_TRACE("acpi_ec_add_fs"); 942 ACPI_FUNCTION_TRACE("acpi_ec_add_fs");
1074 943
1075 if (!acpi_device_dir(device)) { 944 if (!acpi_device_dir(device)) {
1076 acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), 945 acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
1077 acpi_ec_dir); 946 acpi_ec_dir);
1078 if (!acpi_device_dir(device)) 947 if (!acpi_device_dir(device))
1079 return_VALUE(-ENODEV); 948 return_VALUE(-ENODEV);
1080 } 949 }
1081 950
1082 entry = create_proc_entry(ACPI_EC_FILE_INFO, S_IRUGO, 951 entry = create_proc_entry(ACPI_EC_FILE_INFO, S_IRUGO,
1083 acpi_device_dir(device)); 952 acpi_device_dir(device));
1084 if (!entry) 953 if (!entry)
1085 ACPI_DEBUG_PRINT((ACPI_DB_WARN, 954 ACPI_DEBUG_PRINT((ACPI_DB_WARN,
1086 "Unable to create '%s' fs entry\n", 955 "Unable to create '%s' fs entry\n",
1087 ACPI_EC_FILE_INFO)); 956 ACPI_EC_FILE_INFO));
1088 else { 957 else {
1089 entry->proc_fops = &acpi_ec_info_ops; 958 entry->proc_fops = &acpi_ec_info_ops;
1090 entry->data = acpi_driver_data(device); 959 entry->data = acpi_driver_data(device);
@@ -1094,10 +963,7 @@ acpi_ec_add_fs (
1094 return_VALUE(0); 963 return_VALUE(0);
1095} 964}
1096 965
1097 966static int acpi_ec_remove_fs(struct acpi_device *device)
1098static int
1099acpi_ec_remove_fs (
1100 struct acpi_device *device)
1101{ 967{
1102 ACPI_FUNCTION_TRACE("acpi_ec_remove_fs"); 968 ACPI_FUNCTION_TRACE("acpi_ec_remove_fs");
1103 969
@@ -1110,20 +976,16 @@ acpi_ec_remove_fs (
1110 return_VALUE(0); 976 return_VALUE(0);
1111} 977}
1112 978
1113
1114/* -------------------------------------------------------------------------- 979/* --------------------------------------------------------------------------
1115 Driver Interface 980 Driver Interface
1116 -------------------------------------------------------------------------- */ 981 -------------------------------------------------------------------------- */
1117 982
1118 983static int acpi_ec_polling_add(struct acpi_device *device)
1119static int
1120acpi_ec_polling_add (
1121 struct acpi_device *device)
1122{ 984{
1123 int result = 0; 985 int result = 0;
1124 acpi_status status = AE_OK; 986 acpi_status status = AE_OK;
1125 union acpi_ec *ec = NULL; 987 union acpi_ec *ec = NULL;
1126 unsigned long uid; 988 unsigned long uid;
1127 989
1128 ACPI_FUNCTION_TRACE("acpi_ec_add"); 990 ACPI_FUNCTION_TRACE("acpi_ec_add");
1129 991
@@ -1143,26 +1005,31 @@ acpi_ec_polling_add (
1143 acpi_driver_data(device) = ec; 1005 acpi_driver_data(device) = ec;
1144 1006
1145 /* Use the global lock for all EC transactions? */ 1007 /* Use the global lock for all EC transactions? */
1146 acpi_evaluate_integer(ec->common.handle, "_GLK", NULL, &ec->common.global_lock); 1008 acpi_evaluate_integer(ec->common.handle, "_GLK", NULL,
1009 &ec->common.global_lock);
1147 1010
1148 /* If our UID matches the UID for the ECDT-enumerated EC, 1011 /* If our UID matches the UID for the ECDT-enumerated EC,
1149 we now have the *real* EC info, so kill the makeshift one.*/ 1012 we now have the *real* EC info, so kill the makeshift one. */
1150 acpi_evaluate_integer(ec->common.handle, "_UID", NULL, &uid); 1013 acpi_evaluate_integer(ec->common.handle, "_UID", NULL, &uid);
1151 if (ec_ecdt && ec_ecdt->common.uid == uid) { 1014 if (ec_ecdt && ec_ecdt->common.uid == uid) {
1152 acpi_remove_address_space_handler(ACPI_ROOT_OBJECT, 1015 acpi_remove_address_space_handler(ACPI_ROOT_OBJECT,
1153 ACPI_ADR_SPACE_EC, &acpi_ec_space_handler); 1016 ACPI_ADR_SPACE_EC,
1154 1017 &acpi_ec_space_handler);
1155 acpi_remove_gpe_handler(NULL, ec_ecdt->common.gpe_bit, &acpi_ec_gpe_handler); 1018
1019 acpi_remove_gpe_handler(NULL, ec_ecdt->common.gpe_bit,
1020 &acpi_ec_gpe_handler);
1156 1021
1157 kfree(ec_ecdt); 1022 kfree(ec_ecdt);
1158 } 1023 }
1159 1024
1160 /* Get GPE bit assignment (EC events). */ 1025 /* Get GPE bit assignment (EC events). */
1161 /* TODO: Add support for _GPE returning a package */ 1026 /* TODO: Add support for _GPE returning a package */
1162 status = acpi_evaluate_integer(ec->common.handle, "_GPE", NULL, &ec->common.gpe_bit); 1027 status =
1028 acpi_evaluate_integer(ec->common.handle, "_GPE", NULL,
1029 &ec->common.gpe_bit);
1163 if (ACPI_FAILURE(status)) { 1030 if (ACPI_FAILURE(status)) {
1164 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 1031 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1165 "Error obtaining GPE bit assignment\n")); 1032 "Error obtaining GPE bit assignment\n"));
1166 result = -ENODEV; 1033 result = -ENODEV;
1167 goto end; 1034 goto end;
1168 } 1035 }
@@ -1172,26 +1039,24 @@ acpi_ec_polling_add (
1172 goto end; 1039 goto end;
1173 1040
1174 printk(KERN_INFO PREFIX "%s [%s] (gpe %d)\n", 1041 printk(KERN_INFO PREFIX "%s [%s] (gpe %d)\n",
1175 acpi_device_name(device), acpi_device_bid(device), 1042 acpi_device_name(device), acpi_device_bid(device),
1176 (u32) ec->common.gpe_bit); 1043 (u32) ec->common.gpe_bit);
1177 1044
1178 if (!first_ec) 1045 if (!first_ec)
1179 first_ec = device; 1046 first_ec = device;
1180 1047
1181end: 1048 end:
1182 if (result) 1049 if (result)
1183 kfree(ec); 1050 kfree(ec);
1184 1051
1185 return_VALUE(result); 1052 return_VALUE(result);
1186} 1053}
1187static int 1054static int acpi_ec_burst_add(struct acpi_device *device)
1188acpi_ec_burst_add (
1189 struct acpi_device *device)
1190{ 1055{
1191 int result = 0; 1056 int result = 0;
1192 acpi_status status = AE_OK; 1057 acpi_status status = AE_OK;
1193 union acpi_ec *ec = NULL; 1058 union acpi_ec *ec = NULL;
1194 unsigned long uid; 1059 unsigned long uid;
1195 1060
1196 ACPI_FUNCTION_TRACE("acpi_ec_add"); 1061 ACPI_FUNCTION_TRACE("acpi_ec_add");
1197 1062
@@ -1205,35 +1070,40 @@ acpi_ec_burst_add (
1205 1070
1206 ec->common.handle = device->handle; 1071 ec->common.handle = device->handle;
1207 ec->common.uid = -1; 1072 ec->common.uid = -1;
1208 atomic_set(&ec->burst.pending_gpe, 0); 1073 atomic_set(&ec->burst.pending_gpe, 0);
1209 atomic_set(&ec->burst.leaving_burst , 1); 1074 atomic_set(&ec->burst.leaving_burst, 1);
1210 init_MUTEX(&ec->burst.sem); 1075 init_MUTEX(&ec->burst.sem);
1211 init_waitqueue_head(&ec->burst.wait); 1076 init_waitqueue_head(&ec->burst.wait);
1212 strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME); 1077 strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
1213 strcpy(acpi_device_class(device), ACPI_EC_CLASS); 1078 strcpy(acpi_device_class(device), ACPI_EC_CLASS);
1214 acpi_driver_data(device) = ec; 1079 acpi_driver_data(device) = ec;
1215 1080
1216 /* Use the global lock for all EC transactions? */ 1081 /* Use the global lock for all EC transactions? */
1217 acpi_evaluate_integer(ec->common.handle, "_GLK", NULL, &ec->common.global_lock); 1082 acpi_evaluate_integer(ec->common.handle, "_GLK", NULL,
1083 &ec->common.global_lock);
1218 1084
1219 /* If our UID matches the UID for the ECDT-enumerated EC, 1085 /* If our UID matches the UID for the ECDT-enumerated EC,
1220 we now have the *real* EC info, so kill the makeshift one.*/ 1086 we now have the *real* EC info, so kill the makeshift one. */
1221 acpi_evaluate_integer(ec->common.handle, "_UID", NULL, &uid); 1087 acpi_evaluate_integer(ec->common.handle, "_UID", NULL, &uid);
1222 if (ec_ecdt && ec_ecdt->common.uid == uid) { 1088 if (ec_ecdt && ec_ecdt->common.uid == uid) {
1223 acpi_remove_address_space_handler(ACPI_ROOT_OBJECT, 1089 acpi_remove_address_space_handler(ACPI_ROOT_OBJECT,
1224 ACPI_ADR_SPACE_EC, &acpi_ec_space_handler); 1090 ACPI_ADR_SPACE_EC,
1091 &acpi_ec_space_handler);
1225 1092
1226 acpi_remove_gpe_handler(NULL, ec_ecdt->common.gpe_bit, &acpi_ec_gpe_handler); 1093 acpi_remove_gpe_handler(NULL, ec_ecdt->common.gpe_bit,
1094 &acpi_ec_gpe_handler);
1227 1095
1228 kfree(ec_ecdt); 1096 kfree(ec_ecdt);
1229 } 1097 }
1230 1098
1231 /* Get GPE bit assignment (EC events). */ 1099 /* Get GPE bit assignment (EC events). */
1232 /* TODO: Add support for _GPE returning a package */ 1100 /* TODO: Add support for _GPE returning a package */
1233 status = acpi_evaluate_integer(ec->common.handle, "_GPE", NULL, &ec->common.gpe_bit); 1101 status =
1102 acpi_evaluate_integer(ec->common.handle, "_GPE", NULL,
1103 &ec->common.gpe_bit);
1234 if (ACPI_FAILURE(status)) { 1104 if (ACPI_FAILURE(status)) {
1235 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 1105 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1236 "Error obtaining GPE bit assignment\n")); 1106 "Error obtaining GPE bit assignment\n"));
1237 result = -ENODEV; 1107 result = -ENODEV;
1238 goto end; 1108 goto end;
1239 } 1109 }
@@ -1242,27 +1112,24 @@ acpi_ec_burst_add (
1242 if (result) 1112 if (result)
1243 goto end; 1113 goto end;
1244 1114
1115 printk("burst-mode-ec-10-Aug\n");
1245 printk(KERN_INFO PREFIX "%s [%s] (gpe %d)\n", 1116 printk(KERN_INFO PREFIX "%s [%s] (gpe %d)\n",
1246 acpi_device_name(device), acpi_device_bid(device), 1117 acpi_device_name(device), acpi_device_bid(device),
1247 (u32) ec->common.gpe_bit); 1118 (u32) ec->common.gpe_bit);
1248 1119
1249 if (!first_ec) 1120 if (!first_ec)
1250 first_ec = device; 1121 first_ec = device;
1251 1122
1252end: 1123 end:
1253 if (result) 1124 if (result)
1254 kfree(ec); 1125 kfree(ec);
1255 1126
1256 return_VALUE(result); 1127 return_VALUE(result);
1257} 1128}
1258 1129
1259 1130static int acpi_ec_remove(struct acpi_device *device, int type)
1260static int
1261acpi_ec_remove (
1262 struct acpi_device *device,
1263 int type)
1264{ 1131{
1265 union acpi_ec *ec = NULL; 1132 union acpi_ec *ec = NULL;
1266 1133
1267 ACPI_FUNCTION_TRACE("acpi_ec_remove"); 1134 ACPI_FUNCTION_TRACE("acpi_ec_remove");
1268 1135
@@ -1278,13 +1145,10 @@ acpi_ec_remove (
1278 return_VALUE(0); 1145 return_VALUE(0);
1279} 1146}
1280 1147
1281
1282static acpi_status 1148static acpi_status
1283acpi_ec_io_ports ( 1149acpi_ec_io_ports(struct acpi_resource *resource, void *context)
1284 struct acpi_resource *resource,
1285 void *context)
1286{ 1150{
1287 union acpi_ec *ec = (union acpi_ec *) context; 1151 union acpi_ec *ec = (union acpi_ec *)context;
1288 struct acpi_generic_address *addr; 1152 struct acpi_generic_address *addr;
1289 1153
1290 if (resource->id != ACPI_RSTYPE_IO) { 1154 if (resource->id != ACPI_RSTYPE_IO) {
@@ -1312,13 +1176,10 @@ acpi_ec_io_ports (
1312 return AE_OK; 1176 return AE_OK;
1313} 1177}
1314 1178
1315 1179static int acpi_ec_start(struct acpi_device *device)
1316static int
1317acpi_ec_start (
1318 struct acpi_device *device)
1319{ 1180{
1320 acpi_status status = AE_OK; 1181 acpi_status status = AE_OK;
1321 union acpi_ec *ec = NULL; 1182 union acpi_ec *ec = NULL;
1322 1183
1323 ACPI_FUNCTION_TRACE("acpi_ec_start"); 1184 ACPI_FUNCTION_TRACE("acpi_ec_start");
1324 1185
@@ -1334,49 +1195,50 @@ acpi_ec_start (
1334 * Get I/O port addresses. Convert to GAS format. 1195 * Get I/O port addresses. Convert to GAS format.
1335 */ 1196 */
1336 status = acpi_walk_resources(ec->common.handle, METHOD_NAME__CRS, 1197 status = acpi_walk_resources(ec->common.handle, METHOD_NAME__CRS,
1337 acpi_ec_io_ports, ec); 1198 acpi_ec_io_ports, ec);
1338 if (ACPI_FAILURE(status) || ec->common.command_addr.register_bit_width == 0) { 1199 if (ACPI_FAILURE(status)
1339 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error getting I/O port addresses")); 1200 || ec->common.command_addr.register_bit_width == 0) {
1201 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1202 "Error getting I/O port addresses"));
1340 return_VALUE(-ENODEV); 1203 return_VALUE(-ENODEV);
1341 } 1204 }
1342 1205
1343 ec->common.status_addr = ec->common.command_addr; 1206 ec->common.status_addr = ec->common.command_addr;
1344 1207
1345 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02x, ports=0x%2x,0x%2x\n", 1208 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02x, ports=0x%2x,0x%2x\n",
1346 (u32) ec->common.gpe_bit, (u32) ec->common.command_addr.address, 1209 (u32) ec->common.gpe_bit,
1347 (u32) ec->common.data_addr.address)); 1210 (u32) ec->common.command_addr.address,
1348 1211 (u32) ec->common.data_addr.address));
1349 1212
1350 /* 1213 /*
1351 * Install GPE handler 1214 * Install GPE handler
1352 */ 1215 */
1353 status = acpi_install_gpe_handler(NULL, ec->common.gpe_bit, 1216 status = acpi_install_gpe_handler(NULL, ec->common.gpe_bit,
1354 ACPI_GPE_EDGE_TRIGGERED, &acpi_ec_gpe_handler, ec); 1217 ACPI_GPE_EDGE_TRIGGERED,
1218 &acpi_ec_gpe_handler, ec);
1355 if (ACPI_FAILURE(status)) { 1219 if (ACPI_FAILURE(status)) {
1356 return_VALUE(-ENODEV); 1220 return_VALUE(-ENODEV);
1357 } 1221 }
1358 acpi_set_gpe_type (NULL, ec->common.gpe_bit, ACPI_GPE_TYPE_RUNTIME); 1222 acpi_set_gpe_type(NULL, ec->common.gpe_bit, ACPI_GPE_TYPE_RUNTIME);
1359 acpi_enable_gpe (NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 1223 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
1360 1224
1361 status = acpi_install_address_space_handler (ec->common.handle, 1225 status = acpi_install_address_space_handler(ec->common.handle,
1362 ACPI_ADR_SPACE_EC, &acpi_ec_space_handler, 1226 ACPI_ADR_SPACE_EC,
1363 &acpi_ec_space_setup, ec); 1227 &acpi_ec_space_handler,
1228 &acpi_ec_space_setup, ec);
1364 if (ACPI_FAILURE(status)) { 1229 if (ACPI_FAILURE(status)) {
1365 acpi_remove_gpe_handler(NULL, ec->common.gpe_bit, &acpi_ec_gpe_handler); 1230 acpi_remove_gpe_handler(NULL, ec->common.gpe_bit,
1231 &acpi_ec_gpe_handler);
1366 return_VALUE(-ENODEV); 1232 return_VALUE(-ENODEV);
1367 } 1233 }
1368 1234
1369 return_VALUE(AE_OK); 1235 return_VALUE(AE_OK);
1370} 1236}
1371 1237
1372 1238static int acpi_ec_stop(struct acpi_device *device, int type)
1373static int
1374acpi_ec_stop (
1375 struct acpi_device *device,
1376 int type)
1377{ 1239{
1378 acpi_status status = AE_OK; 1240 acpi_status status = AE_OK;
1379 union acpi_ec *ec = NULL; 1241 union acpi_ec *ec = NULL;
1380 1242
1381 ACPI_FUNCTION_TRACE("acpi_ec_stop"); 1243 ACPI_FUNCTION_TRACE("acpi_ec_stop");
1382 1244
@@ -1386,11 +1248,14 @@ acpi_ec_stop (
1386 ec = acpi_driver_data(device); 1248 ec = acpi_driver_data(device);
1387 1249
1388 status = acpi_remove_address_space_handler(ec->common.handle, 1250 status = acpi_remove_address_space_handler(ec->common.handle,
1389 ACPI_ADR_SPACE_EC, &acpi_ec_space_handler); 1251 ACPI_ADR_SPACE_EC,
1252 &acpi_ec_space_handler);
1390 if (ACPI_FAILURE(status)) 1253 if (ACPI_FAILURE(status))
1391 return_VALUE(-ENODEV); 1254 return_VALUE(-ENODEV);
1392 1255
1393 status = acpi_remove_gpe_handler(NULL, ec->common.gpe_bit, &acpi_ec_gpe_handler); 1256 status =
1257 acpi_remove_gpe_handler(NULL, ec->common.gpe_bit,
1258 &acpi_ec_gpe_handler);
1394 if (ACPI_FAILURE(status)) 1259 if (ACPI_FAILURE(status))
1395 return_VALUE(-ENODEV); 1260 return_VALUE(-ENODEV);
1396 1261
@@ -1398,32 +1263,26 @@ acpi_ec_stop (
1398} 1263}
1399 1264
1400static acpi_status __init 1265static acpi_status __init
1401acpi_fake_ecdt_callback ( 1266acpi_fake_ecdt_callback(acpi_handle handle,
1402 acpi_handle handle, 1267 u32 Level, void *context, void **retval)
1403 u32 Level,
1404 void *context,
1405 void **retval)
1406{ 1268{
1407 1269
1408 if (acpi_ec_polling_mode) 1270 if (acpi_ec_polling_mode)
1409 return acpi_fake_ecdt_polling_callback(handle, 1271 return acpi_fake_ecdt_polling_callback(handle,
1410 Level, context, retval); 1272 Level, context, retval);
1411 else 1273 else
1412 return acpi_fake_ecdt_burst_callback(handle, 1274 return acpi_fake_ecdt_burst_callback(handle,
1413 Level, context, retval); 1275 Level, context, retval);
1414} 1276}
1415 1277
1416static acpi_status __init 1278static acpi_status __init
1417acpi_fake_ecdt_polling_callback ( 1279acpi_fake_ecdt_polling_callback(acpi_handle handle,
1418 acpi_handle handle, 1280 u32 Level, void *context, void **retval)
1419 u32 Level,
1420 void *context,
1421 void **retval)
1422{ 1281{
1423 acpi_status status; 1282 acpi_status status;
1424 1283
1425 status = acpi_walk_resources(handle, METHOD_NAME__CRS, 1284 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
1426 acpi_ec_io_ports, ec_ecdt); 1285 acpi_ec_io_ports, ec_ecdt);
1427 if (ACPI_FAILURE(status)) 1286 if (ACPI_FAILURE(status))
1428 return status; 1287 return status;
1429 ec_ecdt->common.status_addr = ec_ecdt->common.command_addr; 1288 ec_ecdt->common.status_addr = ec_ecdt->common.command_addr;
@@ -1431,33 +1290,33 @@ acpi_fake_ecdt_polling_callback (
1431 ec_ecdt->common.uid = -1; 1290 ec_ecdt->common.uid = -1;
1432 acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->common.uid); 1291 acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->common.uid);
1433 1292
1434 status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec_ecdt->common.gpe_bit); 1293 status =
1294 acpi_evaluate_integer(handle, "_GPE", NULL,
1295 &ec_ecdt->common.gpe_bit);
1435 if (ACPI_FAILURE(status)) 1296 if (ACPI_FAILURE(status))
1436 return status; 1297 return status;
1437 spin_lock_init(&ec_ecdt->polling.lock); 1298 spin_lock_init(&ec_ecdt->polling.lock);
1438 ec_ecdt->common.global_lock = TRUE; 1299 ec_ecdt->common.global_lock = TRUE;
1439 ec_ecdt->common.handle = handle; 1300 ec_ecdt->common.handle = handle;
1440 1301
1441 printk(KERN_INFO PREFIX "GPE=0x%02x, ports=0x%2x, 0x%2x\n", 1302 printk(KERN_INFO PREFIX "GPE=0x%02x, ports=0x%2x, 0x%2x\n",
1442 (u32) ec_ecdt->common.gpe_bit, (u32) ec_ecdt->common.command_addr.address, 1303 (u32) ec_ecdt->common.gpe_bit,
1443 (u32) ec_ecdt->common.data_addr.address); 1304 (u32) ec_ecdt->common.command_addr.address,
1305 (u32) ec_ecdt->common.data_addr.address);
1444 1306
1445 return AE_CTRL_TERMINATE; 1307 return AE_CTRL_TERMINATE;
1446} 1308}
1447 1309
1448static acpi_status __init 1310static acpi_status __init
1449acpi_fake_ecdt_burst_callback ( 1311acpi_fake_ecdt_burst_callback(acpi_handle handle,
1450 acpi_handle handle, 1312 u32 Level, void *context, void **retval)
1451 u32 Level,
1452 void *context,
1453 void **retval)
1454{ 1313{
1455 acpi_status status; 1314 acpi_status status;
1456 1315
1457 init_MUTEX(&ec_ecdt->burst.sem); 1316 init_MUTEX(&ec_ecdt->burst.sem);
1458 init_waitqueue_head(&ec_ecdt->burst.wait); 1317 init_waitqueue_head(&ec_ecdt->burst.wait);
1459 status = acpi_walk_resources(handle, METHOD_NAME__CRS, 1318 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
1460 acpi_ec_io_ports, ec_ecdt); 1319 acpi_ec_io_ports, ec_ecdt);
1461 if (ACPI_FAILURE(status)) 1320 if (ACPI_FAILURE(status))
1462 return status; 1321 return status;
1463 ec_ecdt->common.status_addr = ec_ecdt->common.command_addr; 1322 ec_ecdt->common.status_addr = ec_ecdt->common.command_addr;
@@ -1465,15 +1324,18 @@ acpi_fake_ecdt_burst_callback (
1465 ec_ecdt->common.uid = -1; 1324 ec_ecdt->common.uid = -1;
1466 acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->common.uid); 1325 acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->common.uid);
1467 1326
1468 status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec_ecdt->common.gpe_bit); 1327 status =
1328 acpi_evaluate_integer(handle, "_GPE", NULL,
1329 &ec_ecdt->common.gpe_bit);
1469 if (ACPI_FAILURE(status)) 1330 if (ACPI_FAILURE(status))
1470 return status; 1331 return status;
1471 ec_ecdt->common.global_lock = TRUE; 1332 ec_ecdt->common.global_lock = TRUE;
1472 ec_ecdt->common.handle = handle; 1333 ec_ecdt->common.handle = handle;
1473 1334
1474 printk(KERN_INFO PREFIX "GPE=0x%02x, ports=0x%2x, 0x%2x\n", 1335 printk(KERN_INFO PREFIX "GPE=0x%02x, ports=0x%2x, 0x%2x\n",
1475 (u32) ec_ecdt->common.gpe_bit, (u32) ec_ecdt->common.command_addr.address, 1336 (u32) ec_ecdt->common.gpe_bit,
1476 (u32) ec_ecdt->common.data_addr.address); 1337 (u32) ec_ecdt->common.command_addr.address,
1338 (u32) ec_ecdt->common.data_addr.address);
1477 1339
1478 return AE_CTRL_TERMINATE; 1340 return AE_CTRL_TERMINATE;
1479} 1341}
@@ -1488,11 +1350,10 @@ acpi_fake_ecdt_burst_callback (
1488 * op region (since _REG isn't invoked yet). The assumption is true for 1350 * op region (since _REG isn't invoked yet). The assumption is true for
1489 * all systems found. 1351 * all systems found.
1490 */ 1352 */
1491static int __init 1353static int __init acpi_ec_fake_ecdt(void)
1492acpi_ec_fake_ecdt(void)
1493{ 1354{
1494 acpi_status status; 1355 acpi_status status;
1495 int ret = 0; 1356 int ret = 0;
1496 1357
1497 printk(KERN_INFO PREFIX "Try to make an fake ECDT\n"); 1358 printk(KERN_INFO PREFIX "Try to make an fake ECDT\n");
1498 1359
@@ -1503,10 +1364,8 @@ acpi_ec_fake_ecdt(void)
1503 } 1364 }
1504 memset(ec_ecdt, 0, sizeof(union acpi_ec)); 1365 memset(ec_ecdt, 0, sizeof(union acpi_ec));
1505 1366
1506 status = acpi_get_devices (ACPI_EC_HID, 1367 status = acpi_get_devices(ACPI_EC_HID,
1507 acpi_fake_ecdt_callback, 1368 acpi_fake_ecdt_callback, NULL, NULL);
1508 NULL,
1509 NULL);
1510 if (ACPI_FAILURE(status)) { 1369 if (ACPI_FAILURE(status)) {
1511 kfree(ec_ecdt); 1370 kfree(ec_ecdt);
1512 ec_ecdt = NULL; 1371 ec_ecdt = NULL;
@@ -1514,13 +1373,12 @@ acpi_ec_fake_ecdt(void)
1514 goto error; 1373 goto error;
1515 } 1374 }
1516 return 0; 1375 return 0;
1517error: 1376 error:
1518 printk(KERN_ERR PREFIX "Can't make an fake ECDT\n"); 1377 printk(KERN_ERR PREFIX "Can't make an fake ECDT\n");
1519 return ret; 1378 return ret;
1520} 1379}
1521 1380
1522static int __init 1381static int __init acpi_ec_get_real_ecdt(void)
1523acpi_ec_get_real_ecdt(void)
1524{ 1382{
1525 if (acpi_ec_polling_mode) 1383 if (acpi_ec_polling_mode)
1526 return acpi_ec_polling_get_real_ecdt(); 1384 return acpi_ec_polling_get_real_ecdt();
@@ -1528,14 +1386,14 @@ acpi_ec_get_real_ecdt(void)
1528 return acpi_ec_burst_get_real_ecdt(); 1386 return acpi_ec_burst_get_real_ecdt();
1529} 1387}
1530 1388
1531static int __init 1389static int __init acpi_ec_polling_get_real_ecdt(void)
1532acpi_ec_polling_get_real_ecdt(void)
1533{ 1390{
1534 acpi_status status; 1391 acpi_status status;
1535 struct acpi_table_ecdt *ecdt_ptr; 1392 struct acpi_table_ecdt *ecdt_ptr;
1536 1393
1537 status = acpi_get_firmware_table("ECDT", 1, ACPI_LOGICAL_ADDRESSING, 1394 status = acpi_get_firmware_table("ECDT", 1, ACPI_LOGICAL_ADDRESSING,
1538 (struct acpi_table_header **) &ecdt_ptr); 1395 (struct acpi_table_header **)
1396 &ecdt_ptr);
1539 if (ACPI_FAILURE(status)) 1397 if (ACPI_FAILURE(status))
1540 return -ENODEV; 1398 return -ENODEV;
1541 1399
@@ -1558,13 +1416,14 @@ acpi_ec_polling_get_real_ecdt(void)
1558 ec_ecdt->common.global_lock = TRUE; 1416 ec_ecdt->common.global_lock = TRUE;
1559 ec_ecdt->common.uid = ecdt_ptr->uid; 1417 ec_ecdt->common.uid = ecdt_ptr->uid;
1560 1418
1561 status = acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->common.handle); 1419 status =
1420 acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->common.handle);
1562 if (ACPI_FAILURE(status)) { 1421 if (ACPI_FAILURE(status)) {
1563 goto error; 1422 goto error;
1564 } 1423 }
1565 1424
1566 return 0; 1425 return 0;
1567error: 1426 error:
1568 printk(KERN_ERR PREFIX "Could not use ECDT\n"); 1427 printk(KERN_ERR PREFIX "Could not use ECDT\n");
1569 kfree(ec_ecdt); 1428 kfree(ec_ecdt);
1570 ec_ecdt = NULL; 1429 ec_ecdt = NULL;
@@ -1572,15 +1431,14 @@ error:
1572 return -ENODEV; 1431 return -ENODEV;
1573} 1432}
1574 1433
1575 1434static int __init acpi_ec_burst_get_real_ecdt(void)
1576static int __init
1577acpi_ec_burst_get_real_ecdt(void)
1578{ 1435{
1579 acpi_status status; 1436 acpi_status status;
1580 struct acpi_table_ecdt *ecdt_ptr; 1437 struct acpi_table_ecdt *ecdt_ptr;
1581 1438
1582 status = acpi_get_firmware_table("ECDT", 1, ACPI_LOGICAL_ADDRESSING, 1439 status = acpi_get_firmware_table("ECDT", 1, ACPI_LOGICAL_ADDRESSING,
1583 (struct acpi_table_header **) &ecdt_ptr); 1440 (struct acpi_table_header **)
1441 &ecdt_ptr);
1584 if (ACPI_FAILURE(status)) 1442 if (ACPI_FAILURE(status))
1585 return -ENODEV; 1443 return -ENODEV;
1586 1444
@@ -1594,8 +1452,8 @@ acpi_ec_burst_get_real_ecdt(void)
1594 return -ENOMEM; 1452 return -ENOMEM;
1595 memset(ec_ecdt, 0, sizeof(union acpi_ec)); 1453 memset(ec_ecdt, 0, sizeof(union acpi_ec));
1596 1454
1597 init_MUTEX(&ec_ecdt->burst.sem); 1455 init_MUTEX(&ec_ecdt->burst.sem);
1598 init_waitqueue_head(&ec_ecdt->burst.wait); 1456 init_waitqueue_head(&ec_ecdt->burst.wait);
1599 ec_ecdt->common.command_addr = ecdt_ptr->ec_control; 1457 ec_ecdt->common.command_addr = ecdt_ptr->ec_control;
1600 ec_ecdt->common.status_addr = ecdt_ptr->ec_control; 1458 ec_ecdt->common.status_addr = ecdt_ptr->ec_control;
1601 ec_ecdt->common.data_addr = ecdt_ptr->ec_data; 1459 ec_ecdt->common.data_addr = ecdt_ptr->ec_data;
@@ -1604,13 +1462,14 @@ acpi_ec_burst_get_real_ecdt(void)
1604 ec_ecdt->common.global_lock = TRUE; 1462 ec_ecdt->common.global_lock = TRUE;
1605 ec_ecdt->common.uid = ecdt_ptr->uid; 1463 ec_ecdt->common.uid = ecdt_ptr->uid;
1606 1464
1607 status = acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->common.handle); 1465 status =
1466 acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->common.handle);
1608 if (ACPI_FAILURE(status)) { 1467 if (ACPI_FAILURE(status)) {
1609 goto error; 1468 goto error;
1610 } 1469 }
1611 1470
1612 return 0; 1471 return 0;
1613error: 1472 error:
1614 printk(KERN_ERR PREFIX "Could not use ECDT\n"); 1473 printk(KERN_ERR PREFIX "Could not use ECDT\n");
1615 kfree(ec_ecdt); 1474 kfree(ec_ecdt);
1616 ec_ecdt = NULL; 1475 ec_ecdt = NULL;
@@ -1619,11 +1478,10 @@ error:
1619} 1478}
1620 1479
1621static int __initdata acpi_fake_ecdt_enabled; 1480static int __initdata acpi_fake_ecdt_enabled;
1622int __init 1481int __init acpi_ec_ecdt_probe(void)
1623acpi_ec_ecdt_probe (void)
1624{ 1482{
1625 acpi_status status; 1483 acpi_status status;
1626 int ret; 1484 int ret;
1627 1485
1628 ret = acpi_ec_get_real_ecdt(); 1486 ret = acpi_ec_get_real_ecdt();
1629 /* Try to make a fake ECDT */ 1487 /* Try to make a fake ECDT */
@@ -1638,26 +1496,28 @@ acpi_ec_ecdt_probe (void)
1638 * Install GPE handler 1496 * Install GPE handler
1639 */ 1497 */
1640 status = acpi_install_gpe_handler(NULL, ec_ecdt->common.gpe_bit, 1498 status = acpi_install_gpe_handler(NULL, ec_ecdt->common.gpe_bit,
1641 ACPI_GPE_EDGE_TRIGGERED, &acpi_ec_gpe_handler, 1499 ACPI_GPE_EDGE_TRIGGERED,
1642 ec_ecdt); 1500 &acpi_ec_gpe_handler, ec_ecdt);
1643 if (ACPI_FAILURE(status)) { 1501 if (ACPI_FAILURE(status)) {
1644 goto error; 1502 goto error;
1645 } 1503 }
1646 acpi_set_gpe_type (NULL, ec_ecdt->common.gpe_bit, ACPI_GPE_TYPE_RUNTIME); 1504 acpi_set_gpe_type(NULL, ec_ecdt->common.gpe_bit, ACPI_GPE_TYPE_RUNTIME);
1647 acpi_enable_gpe (NULL, ec_ecdt->common.gpe_bit, ACPI_NOT_ISR); 1505 acpi_enable_gpe(NULL, ec_ecdt->common.gpe_bit, ACPI_NOT_ISR);
1648 1506
1649 status = acpi_install_address_space_handler (ACPI_ROOT_OBJECT, 1507 status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT,
1650 ACPI_ADR_SPACE_EC, &acpi_ec_space_handler, 1508 ACPI_ADR_SPACE_EC,
1651 &acpi_ec_space_setup, ec_ecdt); 1509 &acpi_ec_space_handler,
1510 &acpi_ec_space_setup,
1511 ec_ecdt);
1652 if (ACPI_FAILURE(status)) { 1512 if (ACPI_FAILURE(status)) {
1653 acpi_remove_gpe_handler(NULL, ec_ecdt->common.gpe_bit, 1513 acpi_remove_gpe_handler(NULL, ec_ecdt->common.gpe_bit,
1654 &acpi_ec_gpe_handler); 1514 &acpi_ec_gpe_handler);
1655 goto error; 1515 goto error;
1656 } 1516 }
1657 1517
1658 return 0; 1518 return 0;
1659 1519
1660error: 1520 error:
1661 printk(KERN_ERR PREFIX "Could not use ECDT\n"); 1521 printk(KERN_ERR PREFIX "Could not use ECDT\n");
1662 kfree(ec_ecdt); 1522 kfree(ec_ecdt);
1663 ec_ecdt = NULL; 1523 ec_ecdt = NULL;
@@ -1665,10 +1525,9 @@ error:
1665 return -ENODEV; 1525 return -ENODEV;
1666} 1526}
1667 1527
1668 1528static int __init acpi_ec_init(void)
1669static int __init acpi_ec_init (void)
1670{ 1529{
1671 int result = 0; 1530 int result = 0;
1672 1531
1673 ACPI_FUNCTION_TRACE("acpi_ec_init"); 1532 ACPI_FUNCTION_TRACE("acpi_ec_init");
1674 1533
@@ -1693,8 +1552,7 @@ subsys_initcall(acpi_ec_init);
1693 1552
1694/* EC driver currently not unloadable */ 1553/* EC driver currently not unloadable */
1695#if 0 1554#if 0
1696static void __exit 1555static void __exit acpi_ec_exit(void)
1697acpi_ec_exit (void)
1698{ 1556{
1699 ACPI_FUNCTION_TRACE("acpi_ec_exit"); 1557 ACPI_FUNCTION_TRACE("acpi_ec_exit");
1700 1558
@@ -1704,7 +1562,7 @@ acpi_ec_exit (void)
1704 1562
1705 return_VOID; 1563 return_VOID;
1706} 1564}
1707#endif /* 0 */ 1565#endif /* 0 */
1708 1566
1709static int __init acpi_fake_ecdt_setup(char *str) 1567static int __init acpi_fake_ecdt_setup(char *str)
1710{ 1568{
@@ -1727,8 +1585,8 @@ static int __init acpi_ec_set_polling_mode(char *str)
1727 acpi_ec_polling_mode = EC_POLLING; 1585 acpi_ec_polling_mode = EC_POLLING;
1728 acpi_ec_driver.ops.add = acpi_ec_polling_add; 1586 acpi_ec_driver.ops.add = acpi_ec_polling_add;
1729 } 1587 }
1730 printk(KERN_INFO PREFIX "EC %s mode.\n", 1588 printk(KERN_INFO PREFIX "EC %s mode.\n", burst ? "burst" : "polling");
1731 burst ? "burst": "polling");
1732 return 0; 1589 return 0;
1733} 1590}
1591
1734__setup("ec_burst=", acpi_ec_set_polling_mode); 1592__setup("ec_burst=", acpi_ec_set_polling_mode);
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-03 09:50:58 -0500