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authorDenis M. Sadykov <denis.m.sadykov@intel.com>2006-09-26 11:50:33 -0400
committerLen Brown <len.brown@intel.com>2006-10-14 00:49:54 -0400
commit703959d47e887a29dc58123c05aa0ffcbbfa131d (patch)
tree553ca4d1f0b76c77d3eeacc75f246dbbe5cafc0f /drivers/acpi/ec.c
parent7c6db5e51227761f42c6ac8260753f5c24dc1dde (diff)
ACPI: EC: Remove unused variables and duplicated code
Signed-off-by: Alexey Y. Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/ec.c')
-rw-r--r--drivers/acpi/ec.c711
1 files changed, 253 insertions, 458 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index b6f935d0c3ad..c816b4eab50d 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -45,203 +45,162 @@ ACPI_MODULE_NAME("acpi_ec")
45#define ACPI_EC_DRIVER_NAME "ACPI Embedded Controller Driver" 45#define ACPI_EC_DRIVER_NAME "ACPI Embedded Controller Driver"
46#define ACPI_EC_DEVICE_NAME "Embedded Controller" 46#define ACPI_EC_DEVICE_NAME "Embedded Controller"
47#define ACPI_EC_FILE_INFO "info" 47#define ACPI_EC_FILE_INFO "info"
48
49/* EC status register */
48#define ACPI_EC_FLAG_OBF 0x01 /* Output buffer full */ 50#define ACPI_EC_FLAG_OBF 0x01 /* Output buffer full */
49#define ACPI_EC_FLAG_IBF 0x02 /* Input buffer full */ 51#define ACPI_EC_FLAG_IBF 0x02 /* Input buffer full */
50#define ACPI_EC_FLAG_BURST 0x10 /* burst mode */ 52#define ACPI_EC_FLAG_BURST 0x10 /* burst mode */
51#define ACPI_EC_FLAG_SCI 0x20 /* EC-SCI occurred */ 53#define ACPI_EC_FLAG_SCI 0x20 /* EC-SCI occurred */
52#define ACPI_EC_EVENT_OBF 0x01 /* Output buffer full */ 54
53#define ACPI_EC_EVENT_IBE 0x02 /* Input buffer empty */ 55/* EC commands */
54#define ACPI_EC_DELAY 50 /* Wait 50ms max. during EC ops */
55#define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */
56#define ACPI_EC_UDELAY 100 /* Poll @ 100us increments */
57#define ACPI_EC_UDELAY_COUNT 1000 /* Wait 10ms max. during EC ops */
58#define ACPI_EC_COMMAND_READ 0x80 56#define ACPI_EC_COMMAND_READ 0x80
59#define ACPI_EC_COMMAND_WRITE 0x81 57#define ACPI_EC_COMMAND_WRITE 0x81
60#define ACPI_EC_BURST_ENABLE 0x82 58#define ACPI_EC_BURST_ENABLE 0x82
61#define ACPI_EC_BURST_DISABLE 0x83 59#define ACPI_EC_BURST_DISABLE 0x83
62#define ACPI_EC_COMMAND_QUERY 0x84 60#define ACPI_EC_COMMAND_QUERY 0x84
63#define EC_POLL 0xFF 61
64#define EC_INTR 0x00 62/* EC events */
63enum {
64 ACPI_EC_EVENT_OBF_1 = 1, /* Output buffer full */
65 ACPI_EC_EVENT_IBF_0, /* Input buffer empty */
66};
67
68#define ACPI_EC_DELAY 50 /* Wait 50ms max. during EC ops */
69#define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */
70#define ACPI_EC_UDELAY 100 /* Poll @ 100us increments */
71#define ACPI_EC_UDELAY_COUNT 1000 /* Wait 10ms max. during EC ops */
72
73enum {
74 EC_INTR = 1, /* Output buffer full */
75 EC_POLL, /* Input buffer empty */
76};
77
65static int acpi_ec_remove(struct acpi_device *device, int type); 78static int acpi_ec_remove(struct acpi_device *device, int type);
66static int acpi_ec_start(struct acpi_device *device); 79static int acpi_ec_start(struct acpi_device *device);
67static int acpi_ec_stop(struct acpi_device *device, int type); 80static int acpi_ec_stop(struct acpi_device *device, int type);
68static int acpi_ec_intr_add(struct acpi_device *device); 81static int acpi_ec_add(struct acpi_device *device);
69static int acpi_ec_poll_add(struct acpi_device *device);
70 82
71static struct acpi_driver acpi_ec_driver = { 83static struct acpi_driver acpi_ec_driver = {
72 .name = ACPI_EC_DRIVER_NAME, 84 .name = ACPI_EC_DRIVER_NAME,
73 .class = ACPI_EC_CLASS, 85 .class = ACPI_EC_CLASS,
74 .ids = ACPI_EC_HID, 86 .ids = ACPI_EC_HID,
75 .ops = { 87 .ops = {
76 .add = acpi_ec_intr_add, 88 .add = acpi_ec_add,
77 .remove = acpi_ec_remove, 89 .remove = acpi_ec_remove,
78 .start = acpi_ec_start, 90 .start = acpi_ec_start,
79 .stop = acpi_ec_stop, 91 .stop = acpi_ec_stop,
80 }, 92 },
81}; 93};
82union acpi_ec { 94struct acpi_ec {
83 struct { 95 acpi_handle handle;
84 u32 mode; 96 unsigned long uid;
85 acpi_handle handle; 97 unsigned long gpe_bit;
86 unsigned long uid; 98 struct acpi_generic_address status_addr;
87 unsigned long gpe_bit; 99 struct acpi_generic_address command_addr;
88 struct acpi_generic_address status_addr; 100 struct acpi_generic_address data_addr;
89 struct acpi_generic_address command_addr; 101 unsigned long global_lock;
90 struct acpi_generic_address data_addr; 102 struct semaphore sem;
91 unsigned long global_lock; 103 unsigned int expect_event;
92 } common; 104 atomic_t leaving_burst; /* 0 : No, 1 : Yes, 2: abort */
93 105 wait_queue_head_t wait;
94 struct {
95 u32 mode;
96 acpi_handle handle;
97 unsigned long uid;
98 unsigned long gpe_bit;
99 struct acpi_generic_address status_addr;
100 struct acpi_generic_address command_addr;
101 struct acpi_generic_address data_addr;
102 unsigned long global_lock;
103 u8 expect_event;
104 atomic_t leaving_burst; /* 0 : No, 1 : Yes, 2: abort */
105 atomic_t pending_gpe;
106 struct semaphore sem;
107 wait_queue_head_t wait;
108 } intr;
109
110 struct {
111 u32 mode;
112 acpi_handle handle;
113 unsigned long uid;
114 unsigned long gpe_bit;
115 struct acpi_generic_address status_addr;
116 struct acpi_generic_address command_addr;
117 struct acpi_generic_address data_addr;
118 unsigned long global_lock;
119 struct semaphore sem;
120 } poll;
121}; 106};
122 107
123static int acpi_ec_poll_wait(union acpi_ec *ec, u8 event); 108/* If we find an EC via the ECDT, we need to keep a ptr to its context */
124static int acpi_ec_intr_wait(union acpi_ec *ec, u8 event); 109static struct acpi_ec *ec_ecdt;
125static int acpi_ec_poll_transaction(union acpi_ec *ec, u8 command, 110
111/* External interfaces use first EC only, so remember */
112static struct acpi_device *first_ec;
113static int acpi_ec_mode = EC_INTR;
114
115static int acpi_ec_poll_transaction(struct acpi_ec *ec, u8 command,
126 const u8 *wdata, unsigned wdata_len, 116 const u8 *wdata, unsigned wdata_len,
127 u8 *rdata, unsigned rdata_len); 117 u8 *rdata, unsigned rdata_len);
128static int acpi_ec_intr_transaction(union acpi_ec *ec, u8 command, 118static int acpi_ec_intr_transaction(struct acpi_ec *ec, u8 command,
129 const u8 *wdata, unsigned wdata_len, 119 const u8 *wdata, unsigned wdata_len,
130 u8 *rdata, unsigned rdata_len); 120 u8 *rdata, unsigned rdata_len);
131static void acpi_ec_gpe_poll_query(void *ec_cxt); 121static void acpi_ec_gpe_poll_query(void *ec_cxt);
132static void acpi_ec_gpe_intr_query(void *ec_cxt); 122static void acpi_ec_gpe_intr_query(void *ec_cxt);
133static u32 acpi_ec_gpe_poll_handler(void *data); 123static u32 acpi_ec_gpe_poll_handler(void *data);
134static u32 acpi_ec_gpe_intr_handler(void *data); 124static u32 acpi_ec_gpe_intr_handler(void *data);
135static acpi_status __init
136acpi_fake_ecdt_poll_callback(acpi_handle handle,
137 u32 Level, void *context, void **retval);
138
139static acpi_status __init
140acpi_fake_ecdt_intr_callback(acpi_handle handle,
141 u32 Level, void *context, void **retval);
142
143static int __init acpi_ec_poll_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 */
146static union acpi_ec *ec_ecdt;
147
148/* External interfaces use first EC only, so remember */
149static struct acpi_device *first_ec;
150static int acpi_ec_poll_mode = EC_INTR;
151 125
152/* -------------------------------------------------------------------------- 126/* --------------------------------------------------------------------------
153 Transaction Management 127 Transaction Management
154 -------------------------------------------------------------------------- */ 128 -------------------------------------------------------------------------- */
155 129
156static u32 acpi_ec_read_status(union acpi_ec *ec) 130static u32 acpi_ec_read_status(struct acpi_ec *ec)
157{ 131{
158 u32 status = 0; 132 u32 status = 0;
159 133
160 acpi_hw_low_level_read(8, &status, &ec->common.status_addr); 134 acpi_hw_low_level_read(8, &status, &ec->status_addr);
161 return status; 135 return status;
162} 136}
163 137
164static int acpi_ec_check_status(u32 status, u8 event) { 138static u32 acpi_ec_read_data(struct acpi_ec *ec)
165 139{
166 switch (event) { 140 u32 data = 0;
167 case ACPI_EC_EVENT_OBF:
168 if (status & ACPI_EC_FLAG_OBF)
169 return 1;
170 case ACPI_EC_EVENT_IBE:
171 if (!(status & ACPI_EC_FLAG_IBF))
172 return 1;
173 default:
174 break;
175 }
176 141
177 return 0; 142 acpi_hw_low_level_read(8, &data, &ec->data_addr);
143 return data;
178} 144}
179 145
180static int acpi_ec_wait(union acpi_ec *ec, u8 event) 146static void acpi_ec_write_cmd(struct acpi_ec *ec, u32 command)
181{ 147{
182 if (acpi_ec_poll_mode) 148 acpi_hw_low_level_write(8, command, &ec->command_addr);
183 return acpi_ec_poll_wait(ec, event);
184 else
185 return acpi_ec_intr_wait(ec, event);
186} 149}
187 150
188static int acpi_ec_poll_wait(union acpi_ec *ec, u8 event) 151static void acpi_ec_write_data(struct acpi_ec *ec, u32 data)
189{ 152{
190 u32 acpi_ec_status = 0; 153 acpi_hw_low_level_write(8, data, &ec->data_addr);
191 u32 i = ACPI_EC_UDELAY_COUNT; 154}
192 155
193 if (!ec) 156static int acpi_ec_check_status(u32 status, u8 event) {
194 return -EINVAL;
195 157
196 /* Poll the EC status register waiting for the event to occur. */
197 switch (event) { 158 switch (event) {
198 case ACPI_EC_EVENT_OBF: 159 case ACPI_EC_EVENT_OBF_1:
199 do { 160 if (status & ACPI_EC_FLAG_OBF)
200 acpi_hw_low_level_read(8, &acpi_ec_status, 161 return 1;
201 &ec->common.status_addr);
202 if (acpi_ec_status & ACPI_EC_FLAG_OBF)
203 return 0;
204 udelay(ACPI_EC_UDELAY);
205 } while (--i > 0);
206 break; 162 break;
207 case ACPI_EC_EVENT_IBE: 163 case ACPI_EC_EVENT_IBF_0:
208 do { 164 if (!(status & ACPI_EC_FLAG_IBF))
209 acpi_hw_low_level_read(8, &acpi_ec_status, 165 return 1;
210 &ec->common.status_addr);
211 if (!(acpi_ec_status & ACPI_EC_FLAG_IBF))
212 return 0;
213 udelay(ACPI_EC_UDELAY);
214 } while (--i > 0);
215 break; 166 break;
216 default: 167 default:
217 return -EINVAL; 168 break;
218 } 169 }
219 170
220 return -ETIME; 171 return 0;
221} 172}
222 173
223static int acpi_ec_intr_wait(union acpi_ec *ec, u8 event) 174static int acpi_ec_wait(struct acpi_ec *ec, u8 event)
224{ 175{
225 long time_left; 176 int i = (acpi_ec_mode == EC_POLL) ? ACPI_EC_UDELAY_COUNT : 0;
226 177 long time_left;
227 ec->intr.expect_event = event;
228 178
179 ec->expect_event = event;
229 if (acpi_ec_check_status(acpi_ec_read_status(ec), event)) { 180 if (acpi_ec_check_status(acpi_ec_read_status(ec), event)) {
230 ec->intr.expect_event = 0; 181 ec->expect_event = 0;
231 return 0; 182 return 0;
232 } 183 }
233 184
234 time_left = wait_event_timeout(ec->intr.wait, !ec->intr.expect_event, 185 do {
235 msecs_to_jiffies(ACPI_EC_DELAY)); 186 if (acpi_ec_mode == EC_POLL) {
236 187 udelay(ACPI_EC_UDELAY);
237 ec->intr.expect_event = 0; 188 } else {
238 if (time_left <= 0) { 189 time_left = wait_event_timeout(ec->wait,
239 if (acpi_ec_check_status(acpi_ec_read_status(ec), event)) { 190 !ec->expect_event,
191 msecs_to_jiffies(ACPI_EC_DELAY));
192 if (time_left > 0) {
193 ec->expect_event = 0;
240 return 0; 194 return 0;
195 }
241 } 196 }
242 } else { 197 if (acpi_ec_check_status(acpi_ec_read_status(ec), event)) {
243 return 0; 198 ec->expect_event = 0;
244 } 199 return 0;
200 }
201 } while (--i > 0);
202
203 ec->expect_event = 0;
245 204
246 return -ETIME; 205 return -ETIME;
247} 206}
@@ -251,64 +210,63 @@ static int acpi_ec_intr_wait(union acpi_ec *ec, u8 event)
251 * Note: samsung nv5000 doesn't work with ec burst mode. 210 * Note: samsung nv5000 doesn't work with ec burst mode.
252 * http://bugzilla.kernel.org/show_bug.cgi?id=4980 211 * http://bugzilla.kernel.org/show_bug.cgi?id=4980
253 */ 212 */
254int acpi_ec_enter_burst_mode(union acpi_ec *ec) 213int acpi_ec_enter_burst_mode(struct acpi_ec *ec)
255{ 214{
256 u32 tmp = 0; 215 u32 tmp = 0;
257 int status = 0; 216 u32 status = 0;
258 217
259 218
260 status = acpi_ec_read_status(ec); 219 status = acpi_ec_read_status(ec);
261 if (status != -EINVAL && !(status & ACPI_EC_FLAG_BURST)) { 220 if (status != -EINVAL && !(status & ACPI_EC_FLAG_BURST)) {
262 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 221 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
263 if (status) 222 if (status)
264 goto end; 223 goto end;
265 acpi_hw_low_level_write(8, ACPI_EC_BURST_ENABLE, 224 acpi_ec_write_cmd(ec, ACPI_EC_BURST_ENABLE);
266 &ec->common.command_addr); 225 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF_1);
267 status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF); 226 tmp = acpi_ec_read_data(ec);
268 acpi_hw_low_level_read(8, &tmp, &ec->common.data_addr);
269 if (tmp != 0x90) { /* Burst ACK byte */ 227 if (tmp != 0x90) { /* Burst ACK byte */
270 return -EINVAL; 228 return -EINVAL;
271 } 229 }
272 } 230 }
273 231
274 atomic_set(&ec->intr.leaving_burst, 0); 232 atomic_set(&ec->leaving_burst, 0);
275 return 0; 233 return 0;
276 end: 234 end:
277 ACPI_EXCEPTION ((AE_INFO, status, "EC wait, burst mode"); 235 ACPI_EXCEPTION((AE_INFO, status, "EC wait, burst mode"));
278 return -1; 236 return -1;
279} 237}
280 238
281int acpi_ec_leave_burst_mode(union acpi_ec *ec) 239int acpi_ec_leave_burst_mode(struct acpi_ec *ec)
282{ 240{
283 int status = 0; 241 u32 status = 0;
284 242
285 243
286 status = acpi_ec_read_status(ec); 244 status = acpi_ec_read_status(ec);
287 if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)){ 245 if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)){
288 status = acpi_ec_wait(ec, ACPI_EC_FLAG_IBF); 246 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
289 if(status) 247 if(status)
290 goto end; 248 goto end;
291 acpi_hw_low_level_write(8, ACPI_EC_BURST_DISABLE, &ec->common.command_addr); 249 acpi_ec_write_cmd(ec, ACPI_EC_BURST_DISABLE);
292 acpi_ec_wait(ec, ACPI_EC_FLAG_IBF); 250 acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
293 } 251 }
294 atomic_set(&ec->intr.leaving_burst, 1); 252 atomic_set(&ec->leaving_burst, 1);
295 return 0; 253 return 0;
296end: 254 end:
297 ACPI_EXCEPTION((AE_INFO, status, "EC leave burst mode"); 255 ACPI_EXCEPTION((AE_INFO, status, "EC leave burst mode"));
298 return -1; 256 return -1;
299} 257}
300#endif /* ACPI_FUTURE_USAGE */ 258#endif /* ACPI_FUTURE_USAGE */
301 259
302static int acpi_ec_transaction(union acpi_ec *ec, u8 command, 260static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
303 const u8 *wdata, unsigned wdata_len, 261 const u8 *wdata, unsigned wdata_len,
304 u8 *rdata, unsigned rdata_len) 262 u8 *rdata, unsigned rdata_len)
305{ 263{
306 if (acpi_ec_poll_mode) 264 if (acpi_ec_mode == EC_POLL)
307 return acpi_ec_poll_transaction(ec, command, wdata, wdata_len, rdata, rdata_len); 265 return acpi_ec_poll_transaction(ec, command, wdata, wdata_len, rdata, rdata_len);
308 else 266 else
309 return acpi_ec_intr_transaction(ec, command, wdata, wdata_len, rdata, rdata_len); 267 return acpi_ec_intr_transaction(ec, command, wdata, wdata_len, rdata, rdata_len);
310} 268}
311static int acpi_ec_read(union acpi_ec *ec, u8 address, u32 * data) 269static int acpi_ec_read(struct acpi_ec *ec, u8 address, u32 * data)
312{ 270{
313 int result; 271 int result;
314 u8 d; 272 u8 d;
@@ -316,30 +274,30 @@ static int acpi_ec_read(union acpi_ec *ec, u8 address, u32 * data)
316 *data = d; 274 *data = d;
317 return result; 275 return result;
318} 276}
319static int acpi_ec_write(union acpi_ec *ec, u8 address, u8 data) 277static int acpi_ec_write(struct acpi_ec *ec, u8 address, u8 data)
320{ 278{
321 u8 wdata[2] = { address, data }; 279 u8 wdata[2] = { address, data };
322 return acpi_ec_transaction(ec, ACPI_EC_COMMAND_WRITE, wdata, 2, NULL, 0); 280 return acpi_ec_transaction(ec, ACPI_EC_COMMAND_WRITE, wdata, 2, NULL, 0);
323} 281}
324 282
325static int acpi_ec_transaction_unlocked(union acpi_ec *ec, u8 command, 283static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command,
326 const u8 *wdata, unsigned wdata_len, 284 const u8 *wdata, unsigned wdata_len,
327 u8 *rdata, unsigned rdata_len) 285 u8 *rdata, unsigned rdata_len)
328{ 286{
329 int result; 287 int result;
330 288
331 acpi_hw_low_level_write(8, command, &ec->common.command_addr); 289 acpi_ec_write_cmd(ec, command);
332 290
333 for (; wdata_len > 0; wdata_len --) { 291 for (; wdata_len > 0; wdata_len --) {
334 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 292 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
335 if (result) 293 if (result)
336 return result; 294 return result;
337 295
338 acpi_hw_low_level_write(8, *(wdata++), &ec->common.data_addr); 296 acpi_ec_write_data(ec, *(wdata++));
339 } 297 }
340 298
341 if (command == ACPI_EC_COMMAND_WRITE) { 299 if (command == ACPI_EC_COMMAND_WRITE) {
342 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 300 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
343 if (result) 301 if (result)
344 return result; 302 return result;
345 } 303 }
@@ -347,18 +305,18 @@ static int acpi_ec_transaction_unlocked(union acpi_ec *ec, u8 command,
347 for (; rdata_len > 0; rdata_len --) { 305 for (; rdata_len > 0; rdata_len --) {
348 u32 d; 306 u32 d;
349 307
350 result = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF); 308 result = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF_1);
351 if (result) 309 if (result)
352 return result; 310 return result;
353 311
354 acpi_hw_low_level_read(8, &d, &ec->common.data_addr); 312 d = acpi_ec_read_data(ec);
355 *(rdata++) = (u8) d; 313 *(rdata++) = (u8) d;
356 } 314 }
357 315
358 return 0; 316 return 0;
359} 317}
360 318
361static int acpi_ec_poll_transaction(union acpi_ec *ec, u8 command, 319static int acpi_ec_poll_transaction(struct acpi_ec *ec, u8 command,
362 const u8 *wdata, unsigned wdata_len, 320 const u8 *wdata, unsigned wdata_len,
363 u8 *rdata, unsigned rdata_len) 321 u8 *rdata, unsigned rdata_len)
364{ 322{
@@ -372,13 +330,13 @@ static int acpi_ec_poll_transaction(union acpi_ec *ec, u8 command,
372 if (rdata) 330 if (rdata)
373 memset(rdata, 0, rdata_len); 331 memset(rdata, 0, rdata_len);
374 332
375 if (ec->common.global_lock) { 333 if (ec->global_lock) {
376 status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk); 334 status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
377 if (ACPI_FAILURE(status)) 335 if (ACPI_FAILURE(status))
378 return -ENODEV; 336 return -ENODEV;
379 } 337 }
380 338
381 if (down_interruptible(&ec->poll.sem)) { 339 if (down_interruptible(&ec->sem)) {
382 result = -ERESTARTSYS; 340 result = -ERESTARTSYS;
383 goto end_nosem; 341 goto end_nosem;
384 } 342 }
@@ -386,16 +344,16 @@ static int acpi_ec_poll_transaction(union acpi_ec *ec, u8 command,
386 result = acpi_ec_transaction_unlocked(ec, command, 344 result = acpi_ec_transaction_unlocked(ec, command,
387 wdata, wdata_len, 345 wdata, wdata_len,
388 rdata, rdata_len); 346 rdata, rdata_len);
389 up(&ec->poll.sem); 347 up(&ec->sem);
390 348
391end_nosem: 349end_nosem:
392 if (ec->common.global_lock) 350 if (ec->global_lock)
393 acpi_release_global_lock(glk); 351 acpi_release_global_lock(glk);
394 352
395 return result; 353 return result;
396} 354}
397 355
398static int acpi_ec_intr_transaction(union acpi_ec *ec, u8 command, 356static int acpi_ec_intr_transaction(struct acpi_ec *ec, u8 command,
399 const u8 *wdata, unsigned wdata_len, 357 const u8 *wdata, unsigned wdata_len,
400 u8 *rdata, unsigned rdata_len) 358 u8 *rdata, unsigned rdata_len)
401{ 359{
@@ -408,18 +366,18 @@ static int acpi_ec_intr_transaction(union acpi_ec *ec, u8 command,
408 if (rdata) 366 if (rdata)
409 memset(rdata, 0, rdata_len); 367 memset(rdata, 0, rdata_len);
410 368
411 if (ec->common.global_lock) { 369 if (ec->global_lock) {
412 status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk); 370 status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
413 if (ACPI_FAILURE(status)) 371 if (ACPI_FAILURE(status))
414 return -ENODEV; 372 return -ENODEV;
415 } 373 }
416 374
417 WARN_ON(in_interrupt()); 375 WARN_ON(in_interrupt());
418 down(&ec->intr.sem); 376 down(&ec->sem);
419 377
420 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE); 378 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
421 if (status) { 379 if (status) {
422 printk(KERN_DEBUG PREFIX "read EC, IB not empty\n"); 380 ACPI_EXCEPTION((AE_INFO, status, "read EC, IB not empty"));
423 goto end; 381 goto end;
424 } 382 }
425 383
@@ -428,9 +386,9 @@ static int acpi_ec_intr_transaction(union acpi_ec *ec, u8 command,
428 rdata, rdata_len); 386 rdata, rdata_len);
429 387
430end: 388end:
431 up(&ec->intr.sem); 389 up(&ec->sem);
432 390
433 if (ec->common.global_lock) 391 if (ec->global_lock)
434 acpi_release_global_lock(glk); 392 acpi_release_global_lock(glk);
435 393
436 return status; 394 return status;
@@ -441,7 +399,7 @@ end:
441 */ 399 */
442int ec_read(u8 addr, u8 * val) 400int ec_read(u8 addr, u8 * val)
443{ 401{
444 union acpi_ec *ec; 402 struct acpi_ec *ec;
445 int err; 403 int err;
446 u32 temp_data; 404 u32 temp_data;
447 405
@@ -463,7 +421,7 @@ EXPORT_SYMBOL(ec_read);
463 421
464int ec_write(u8 addr, u8 val) 422int ec_write(u8 addr, u8 val)
465{ 423{
466 union acpi_ec *ec; 424 struct acpi_ec *ec;
467 int err; 425 int err;
468 426
469 if (!first_ec) 427 if (!first_ec)
@@ -482,7 +440,7 @@ extern int ec_transaction(u8 command,
482 const u8 *wdata, unsigned wdata_len, 440 const u8 *wdata, unsigned wdata_len,
483 u8 *rdata, unsigned rdata_len) 441 u8 *rdata, unsigned rdata_len)
484{ 442{
485 union acpi_ec *ec; 443 struct acpi_ec *ec;
486 444
487 if (!first_ec) 445 if (!first_ec)
488 return -ENODEV; 446 return -ENODEV;
@@ -494,7 +452,7 @@ extern int ec_transaction(u8 command,
494 452
495EXPORT_SYMBOL(ec_transaction); 453EXPORT_SYMBOL(ec_transaction);
496 454
497static int acpi_ec_query(union acpi_ec *ec, u32 * data) { 455static int acpi_ec_query(struct acpi_ec *ec, u32 * data) {
498 int result; 456 int result;
499 u8 d; 457 u8 d;
500 458
@@ -529,7 +487,7 @@ union acpi_ec_query_data {
529 487
530static void acpi_ec_gpe_query(void *ec_cxt) 488static void acpi_ec_gpe_query(void *ec_cxt)
531{ 489{
532 if (acpi_ec_poll_mode) 490 if (acpi_ec_mode == EC_POLL)
533 acpi_ec_gpe_poll_query(ec_cxt); 491 acpi_ec_gpe_poll_query(ec_cxt);
534 else 492 else
535 acpi_ec_gpe_intr_query(ec_cxt); 493 acpi_ec_gpe_intr_query(ec_cxt);
@@ -537,7 +495,7 @@ static void acpi_ec_gpe_query(void *ec_cxt)
537 495
538static void acpi_ec_gpe_poll_query(void *ec_cxt) 496static void acpi_ec_gpe_poll_query(void *ec_cxt)
539{ 497{
540 union acpi_ec *ec = (union acpi_ec *)ec_cxt; 498 struct acpi_ec *ec = (struct acpi_ec *)ec_cxt;
541 u32 value = 0; 499 u32 value = 0;
542 static char object_name[5] = { '_', 'Q', '0', '0', '\0' }; 500 static char object_name[5] = { '_', 'Q', '0', '0', '\0' };
543 const char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7', 501 const char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7',
@@ -548,11 +506,11 @@ static void acpi_ec_gpe_poll_query(void *ec_cxt)
548 if (!ec_cxt) 506 if (!ec_cxt)
549 goto end; 507 goto end;
550 508
551 if (down_interruptible (&ec->poll.sem)) { 509 if (down_interruptible (&ec->sem)) {
552 return; 510 return;
553 } 511 }
554 acpi_hw_low_level_read(8, &value, &ec->common.command_addr); 512 value = acpi_ec_read_status(ec);
555 up(&ec->poll.sem); 513 up(&ec->sem);
556 514
557 /* TBD: Implement asynch events! 515 /* TBD: Implement asynch events!
558 * NOTE: All we care about are EC-SCI's. Other EC events are 516 * NOTE: All we care about are EC-SCI's. Other EC events are
@@ -571,14 +529,14 @@ static void acpi_ec_gpe_poll_query(void *ec_cxt)
571 529
572 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluating %s\n", object_name)); 530 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluating %s\n", object_name));
573 531
574 acpi_evaluate_object(ec->common.handle, object_name, NULL, NULL); 532 acpi_evaluate_object(ec->handle, object_name, NULL, NULL);
575 533
576 end: 534 end:
577 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 535 acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_NOT_ISR);
578} 536}
579static void acpi_ec_gpe_intr_query(void *ec_cxt) 537static void acpi_ec_gpe_intr_query(void *ec_cxt)
580{ 538{
581 union acpi_ec *ec = (union acpi_ec *)ec_cxt; 539 struct acpi_ec *ec = (struct acpi_ec *)ec_cxt;
582 u32 value; 540 u32 value;
583 int result = -ENODATA; 541 int result = -ENODATA;
584 static char object_name[5] = { '_', 'Q', '0', '0', '\0' }; 542 static char object_name[5] = { '_', 'Q', '0', '0', '\0' };
@@ -598,15 +556,14 @@ static void acpi_ec_gpe_intr_query(void *ec_cxt)
598 556
599 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluating %s\n", object_name)); 557 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluating %s\n", object_name));
600 558
601 acpi_evaluate_object(ec->common.handle, object_name, NULL, NULL); 559 acpi_evaluate_object(ec->handle, object_name, NULL, NULL);
602 end: 560 end:
603 atomic_dec(&ec->intr.pending_gpe);
604 return; 561 return;
605} 562}
606 563
607static u32 acpi_ec_gpe_handler(void *data) 564static u32 acpi_ec_gpe_handler(void *data)
608{ 565{
609 if (acpi_ec_poll_mode) 566 if (acpi_ec_mode == EC_POLL)
610 return acpi_ec_gpe_poll_handler(data); 567 return acpi_ec_gpe_poll_handler(data);
611 else 568 else
612 return acpi_ec_gpe_intr_handler(data); 569 return acpi_ec_gpe_intr_handler(data);
@@ -614,12 +571,12 @@ static u32 acpi_ec_gpe_handler(void *data)
614static u32 acpi_ec_gpe_poll_handler(void *data) 571static u32 acpi_ec_gpe_poll_handler(void *data)
615{ 572{
616 acpi_status status = AE_OK; 573 acpi_status status = AE_OK;
617 union acpi_ec *ec = (union acpi_ec *)data; 574 struct acpi_ec *ec = (struct acpi_ec *)data;
618 575
619 if (!ec) 576 if (!ec)
620 return ACPI_INTERRUPT_NOT_HANDLED; 577 return ACPI_INTERRUPT_NOT_HANDLED;
621 578
622 acpi_disable_gpe(NULL, ec->common.gpe_bit, ACPI_ISR); 579 acpi_disable_gpe(NULL, ec->gpe_bit, ACPI_ISR);
623 580
624 status = acpi_os_execute(OSL_EC_POLL_HANDLER, acpi_ec_gpe_query, ec); 581 status = acpi_os_execute(OSL_EC_POLL_HANDLER, acpi_ec_gpe_query, ec);
625 582
@@ -632,39 +589,38 @@ static u32 acpi_ec_gpe_intr_handler(void *data)
632{ 589{
633 acpi_status status = AE_OK; 590 acpi_status status = AE_OK;
634 u32 value; 591 u32 value;
635 union acpi_ec *ec = (union acpi_ec *)data; 592 struct acpi_ec *ec = (struct acpi_ec *)data;
636 593
637 if (!ec) 594 if (!ec)
638 return ACPI_INTERRUPT_NOT_HANDLED; 595 return ACPI_INTERRUPT_NOT_HANDLED;
639 596
640 acpi_clear_gpe(NULL, ec->common.gpe_bit, ACPI_ISR); 597 acpi_clear_gpe(NULL, ec->gpe_bit, ACPI_ISR);
641 value = acpi_ec_read_status(ec); 598 value = acpi_ec_read_status(ec);
642 599
643 switch (ec->intr.expect_event) { 600 switch (ec->expect_event) {
644 case ACPI_EC_EVENT_OBF: 601 case ACPI_EC_EVENT_OBF_1:
645 if (!(value & ACPI_EC_FLAG_OBF)) 602 if (!(value & ACPI_EC_FLAG_OBF))
646 break; 603 break;
647 ec->intr.expect_event = 0; 604 ec->expect_event = 0;
648 wake_up(&ec->intr.wait); 605 wake_up(&ec->wait);
649 break; 606 break;
650 case ACPI_EC_EVENT_IBE: 607 case ACPI_EC_EVENT_IBF_0:
651 if ((value & ACPI_EC_FLAG_IBF)) 608 if ((value & ACPI_EC_FLAG_IBF))
652 break; 609 break;
653 ec->intr.expect_event = 0; 610 ec->expect_event = 0;
654 wake_up(&ec->intr.wait); 611 wake_up(&ec->wait);
655 break; 612 break;
656 default: 613 default:
657 break; 614 break;
658 } 615 }
659 616
660 if (value & ACPI_EC_FLAG_SCI) { 617 if (value & ACPI_EC_FLAG_SCI) {
661 atomic_add(1, &ec->intr.pending_gpe);
662 status = acpi_os_execute(OSL_EC_BURST_HANDLER, 618 status = acpi_os_execute(OSL_EC_BURST_HANDLER,
663 acpi_ec_gpe_query, ec); 619 acpi_ec_gpe_query, ec);
664 return status == AE_OK ? 620 return status == AE_OK ?
665 ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED; 621 ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
666 } 622 }
667 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_ISR); 623 acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_ISR);
668 return status == AE_OK ? 624 return status == AE_OK ?
669 ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED; 625 ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
670} 626}
@@ -695,7 +651,7 @@ acpi_ec_space_handler(u32 function,
695 void *handler_context, void *region_context) 651 void *handler_context, void *region_context)
696{ 652{
697 int result = 0; 653 int result = 0;
698 union acpi_ec *ec = NULL; 654 struct acpi_ec *ec = NULL;
699 u64 temp = *value; 655 u64 temp = *value;
700 acpi_integer f_v = 0; 656 acpi_integer f_v = 0;
701 int i = 0; 657 int i = 0;
@@ -705,12 +661,10 @@ acpi_ec_space_handler(u32 function,
705 return AE_BAD_PARAMETER; 661 return AE_BAD_PARAMETER;
706 662
707 if (bit_width != 8 && acpi_strict) { 663 if (bit_width != 8 && acpi_strict) {
708 printk(KERN_WARNING PREFIX
709 "acpi_ec_space_handler: bit_width should be 8\n");
710 return AE_BAD_PARAMETER; 664 return AE_BAD_PARAMETER;
711 } 665 }
712 666
713 ec = (union acpi_ec *)handler_context; 667 ec = (struct acpi_ec *)handler_context;
714 668
715 next_byte: 669 next_byte:
716 switch (function) { 670 switch (function) {
@@ -767,20 +721,20 @@ static struct proc_dir_entry *acpi_ec_dir;
767 721
768static int acpi_ec_read_info(struct seq_file *seq, void *offset) 722static int acpi_ec_read_info(struct seq_file *seq, void *offset)
769{ 723{
770 union acpi_ec *ec = (union acpi_ec *)seq->private; 724 struct acpi_ec *ec = (struct acpi_ec *)seq->private;
771 725
772 726
773 if (!ec) 727 if (!ec)
774 goto end; 728 goto end;
775 729
776 seq_printf(seq, "gpe bit: 0x%02x\n", 730 seq_printf(seq, "gpe bit: 0x%02x\n",
777 (u32) ec->common.gpe_bit); 731 (u32) ec->gpe_bit);
778 seq_printf(seq, "ports: 0x%02x, 0x%02x\n", 732 seq_printf(seq, "ports: 0x%02x, 0x%02x\n",
779 (u32) ec->common.status_addr.address, 733 (u32) ec->status_addr.address,
780 (u32) ec->common.data_addr.address); 734 (u32) ec->data_addr.address);
781 seq_printf(seq, "use global lock: %s\n", 735 seq_printf(seq, "use global lock: %s\n",
782 ec->common.global_lock ? "yes" : "no"); 736 ec->global_lock ? "yes" : "no");
783 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 737 acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_NOT_ISR);
784 738
785 end: 739 end:
786 return 0; 740 return 0;
@@ -791,7 +745,7 @@ static int acpi_ec_info_open_fs(struct inode *inode, struct file *file)
791 return single_open(file, acpi_ec_read_info, PDE(inode)->data); 745 return single_open(file, acpi_ec_read_info, PDE(inode)->data);
792} 746}
793 747
794static const struct file_operations acpi_ec_info_ops = { 748static struct file_operations acpi_ec_info_ops = {
795 .open = acpi_ec_info_open_fs, 749 .open = acpi_ec_info_open_fs,
796 .read = seq_read, 750 .read = seq_read,
797 .llseek = seq_lseek, 751 .llseek = seq_lseek,
@@ -840,101 +794,35 @@ static int acpi_ec_remove_fs(struct acpi_device *device)
840 Driver Interface 794 Driver Interface
841 -------------------------------------------------------------------------- */ 795 -------------------------------------------------------------------------- */
842 796
843static int acpi_ec_poll_add(struct acpi_device *device) 797static int acpi_ec_add(struct acpi_device *device)
844{ 798{
845 int result = 0; 799 int result = 0;
846 acpi_status status = AE_OK; 800 acpi_status status = AE_OK;
847 union acpi_ec *ec = NULL; 801 struct acpi_ec *ec = NULL;
848 802
849 803
850 if (!device) 804 if (!device)
851 return -EINVAL; 805 return -EINVAL;
852 806
853 ec = kmalloc(sizeof(union acpi_ec), GFP_KERNEL); 807 ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
854 if (!ec) 808 if (!ec)
855 return -ENOMEM; 809 return -ENOMEM;
856 memset(ec, 0, sizeof(union acpi_ec)); 810 memset(ec, 0, sizeof(struct acpi_ec));
857 811
858 ec->common.handle = device->handle; 812 ec->handle = device->handle;
859 ec->common.uid = -1; 813 ec->uid = -1;
860 init_MUTEX(&ec->poll.sem); 814 init_MUTEX(&ec->sem);
861 strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME); 815 if (acpi_ec_mode == EC_INTR) {
862 strcpy(acpi_device_class(device), ACPI_EC_CLASS); 816 atomic_set(&ec->leaving_burst, 1);
863 acpi_driver_data(device) = ec; 817 init_waitqueue_head(&ec->wait);
864
865 /* Use the global lock for all EC transactions? */
866 acpi_evaluate_integer(ec->common.handle, "_GLK", NULL,
867 &ec->common.global_lock);
868
869 /* XXX we don't test uids, because on some boxes ecdt uid = 0, see:
870 http://bugzilla.kernel.org/show_bug.cgi?id=6111 */
871 if (ec_ecdt) {
872 acpi_remove_address_space_handler(ACPI_ROOT_OBJECT,
873 ACPI_ADR_SPACE_EC,
874 &acpi_ec_space_handler);
875
876 acpi_remove_gpe_handler(NULL, ec_ecdt->common.gpe_bit,
877 &acpi_ec_gpe_handler);
878
879 kfree(ec_ecdt);
880 }
881
882 /* Get GPE bit assignment (EC events). */
883 /* TODO: Add support for _GPE returning a package */
884 status =
885 acpi_evaluate_integer(ec->common.handle, "_GPE", NULL,
886 &ec->common.gpe_bit);
887 if (ACPI_FAILURE(status)) {
888 ACPI_EXCEPTION((AE_INFO, status, "Obtaining GPE bit"));
889 result = -ENODEV;
890 goto end;
891 } 818 }
892
893 result = acpi_ec_add_fs(device);
894 if (result)
895 goto end;
896
897 printk(KERN_INFO PREFIX "%s [%s] (gpe %d) polling mode.\n",
898 acpi_device_name(device), acpi_device_bid(device),
899 (u32) ec->common.gpe_bit);
900
901 if (!first_ec)
902 first_ec = device;
903
904 end:
905 if (result)
906 kfree(ec);
907
908 return result;
909}
910static int acpi_ec_intr_add(struct acpi_device *device)
911{
912 int result = 0;
913 acpi_status status = AE_OK;
914 union acpi_ec *ec = NULL;
915
916
917 if (!device)
918 return -EINVAL;
919
920 ec = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
921 if (!ec)
922 return -ENOMEM;
923 memset(ec, 0, sizeof(union acpi_ec));
924
925 ec->common.handle = device->handle;
926 ec->common.uid = -1;
927 atomic_set(&ec->intr.pending_gpe, 0);
928 atomic_set(&ec->intr.leaving_burst, 1);
929 init_MUTEX(&ec->intr.sem);
930 init_waitqueue_head(&ec->intr.wait);
931 strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME); 819 strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
932 strcpy(acpi_device_class(device), ACPI_EC_CLASS); 820 strcpy(acpi_device_class(device), ACPI_EC_CLASS);
933 acpi_driver_data(device) = ec; 821 acpi_driver_data(device) = ec;
934 822
935 /* Use the global lock for all EC transactions? */ 823 /* Use the global lock for all EC transactions? */
936 acpi_evaluate_integer(ec->common.handle, "_GLK", NULL, 824 acpi_evaluate_integer(ec->handle, "_GLK", NULL,
937 &ec->common.global_lock); 825 &ec->global_lock);
938 826
939 /* XXX we don't test uids, because on some boxes ecdt uid = 0, see: 827 /* XXX we don't test uids, because on some boxes ecdt uid = 0, see:
940 http://bugzilla.kernel.org/show_bug.cgi?id=6111 */ 828 http://bugzilla.kernel.org/show_bug.cgi?id=6111 */
@@ -943,7 +831,7 @@ static int acpi_ec_intr_add(struct acpi_device *device)
943 ACPI_ADR_SPACE_EC, 831 ACPI_ADR_SPACE_EC,
944 &acpi_ec_space_handler); 832 &acpi_ec_space_handler);
945 833
946 acpi_remove_gpe_handler(NULL, ec_ecdt->common.gpe_bit, 834 acpi_remove_gpe_handler(NULL, ec_ecdt->gpe_bit,
947 &acpi_ec_gpe_handler); 835 &acpi_ec_gpe_handler);
948 836
949 kfree(ec_ecdt); 837 kfree(ec_ecdt);
@@ -952,10 +840,10 @@ static int acpi_ec_intr_add(struct acpi_device *device)
952 /* Get GPE bit assignment (EC events). */ 840 /* Get GPE bit assignment (EC events). */
953 /* TODO: Add support for _GPE returning a package */ 841 /* TODO: Add support for _GPE returning a package */
954 status = 842 status =
955 acpi_evaluate_integer(ec->common.handle, "_GPE", NULL, 843 acpi_evaluate_integer(ec->handle, "_GPE", NULL,
956 &ec->common.gpe_bit); 844 &ec->gpe_bit);
957 if (ACPI_FAILURE(status)) { 845 if (ACPI_FAILURE(status)) {
958 printk(KERN_ERR PREFIX "Obtaining GPE bit assignment\n"); 846 ACPI_EXCEPTION((AE_INFO, status, "Obtaining GPE bit assignment"));
959 result = -ENODEV; 847 result = -ENODEV;
960 goto end; 848 goto end;
961 } 849 }
@@ -964,14 +852,14 @@ static int acpi_ec_intr_add(struct acpi_device *device)
964 if (result) 852 if (result)
965 goto end; 853 goto end;
966 854
967 printk(KERN_INFO PREFIX "%s [%s] (gpe %d) interrupt mode.\n", 855 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s [%s] (gpe %d) interrupt mode.",
968 acpi_device_name(device), acpi_device_bid(device), 856 acpi_device_name(device), acpi_device_bid(device),
969 (u32) ec->common.gpe_bit); 857 (u32) ec->gpe_bit));
970 858
971 if (!first_ec) 859 if (!first_ec)
972 first_ec = device; 860 first_ec = device;
973 861
974 end: 862 end:
975 if (result) 863 if (result)
976 kfree(ec); 864 kfree(ec);
977 865
@@ -980,7 +868,7 @@ static int acpi_ec_intr_add(struct acpi_device *device)
980 868
981static int acpi_ec_remove(struct acpi_device *device, int type) 869static int acpi_ec_remove(struct acpi_device *device, int type)
982{ 870{
983 union acpi_ec *ec = NULL; 871 struct acpi_ec *ec = NULL;
984 872
985 873
986 if (!device) 874 if (!device)
@@ -998,7 +886,7 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
998static acpi_status 886static acpi_status
999acpi_ec_io_ports(struct acpi_resource *resource, void *context) 887acpi_ec_io_ports(struct acpi_resource *resource, void *context)
1000{ 888{
1001 union acpi_ec *ec = (union acpi_ec *)context; 889 struct acpi_ec *ec = (struct acpi_ec *)context;
1002 struct acpi_generic_address *addr; 890 struct acpi_generic_address *addr;
1003 891
1004 if (resource->type != ACPI_RESOURCE_TYPE_IO) { 892 if (resource->type != ACPI_RESOURCE_TYPE_IO) {
@@ -1010,10 +898,10 @@ acpi_ec_io_ports(struct acpi_resource *resource, void *context)
1010 * the second address region returned is the status/command 898 * the second address region returned is the status/command
1011 * port. 899 * port.
1012 */ 900 */
1013 if (ec->common.data_addr.register_bit_width == 0) { 901 if (ec->data_addr.register_bit_width == 0) {
1014 addr = &ec->common.data_addr; 902 addr = &ec->data_addr;
1015 } else if (ec->common.command_addr.register_bit_width == 0) { 903 } else if (ec->command_addr.register_bit_width == 0) {
1016 addr = &ec->common.command_addr; 904 addr = &ec->command_addr;
1017 } else { 905 } else {
1018 return AE_CTRL_TERMINATE; 906 return AE_CTRL_TERMINATE;
1019 } 907 }
@@ -1029,7 +917,7 @@ acpi_ec_io_ports(struct acpi_resource *resource, void *context)
1029static int acpi_ec_start(struct acpi_device *device) 917static int acpi_ec_start(struct acpi_device *device)
1030{ 918{
1031 acpi_status status = AE_OK; 919 acpi_status status = AE_OK;
1032 union acpi_ec *ec = NULL; 920 struct acpi_ec *ec = NULL;
1033 921
1034 922
1035 if (!device) 923 if (!device)
@@ -1043,39 +931,40 @@ static int acpi_ec_start(struct acpi_device *device)
1043 /* 931 /*
1044 * Get I/O port addresses. Convert to GAS format. 932 * Get I/O port addresses. Convert to GAS format.
1045 */ 933 */
1046 status = acpi_walk_resources(ec->common.handle, METHOD_NAME__CRS, 934 status = acpi_walk_resources(ec->handle, METHOD_NAME__CRS,
1047 acpi_ec_io_ports, ec); 935 acpi_ec_io_ports, ec);
1048 if (ACPI_FAILURE(status) 936 if (ACPI_FAILURE(status)
1049 || ec->common.command_addr.register_bit_width == 0) { 937 || ec->command_addr.register_bit_width == 0) {
1050 printk(KERN_ERR PREFIX "Error getting I/O port addresses\n"); 938 ACPI_EXCEPTION((AE_INFO, status,
939 "Error getting I/O port addresses"));
1051 return -ENODEV; 940 return -ENODEV;
1052 } 941 }
1053 942
1054 ec->common.status_addr = ec->common.command_addr; 943 ec->status_addr = ec->command_addr;
1055 944
1056 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02x, ports=0x%2x,0x%2x\n", 945 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02x, ports=0x%2x,0x%2x",
1057 (u32) ec->common.gpe_bit, 946 (u32) ec->gpe_bit,
1058 (u32) ec->common.command_addr.address, 947 (u32) ec->command_addr.address,
1059 (u32) ec->common.data_addr.address)); 948 (u32) ec->data_addr.address));
1060 949
1061 /* 950 /*
1062 * Install GPE handler 951 * Install GPE handler
1063 */ 952 */
1064 status = acpi_install_gpe_handler(NULL, ec->common.gpe_bit, 953 status = acpi_install_gpe_handler(NULL, ec->gpe_bit,
1065 ACPI_GPE_EDGE_TRIGGERED, 954 ACPI_GPE_EDGE_TRIGGERED,
1066 &acpi_ec_gpe_handler, ec); 955 &acpi_ec_gpe_handler, ec);
1067 if (ACPI_FAILURE(status)) { 956 if (ACPI_FAILURE(status)) {
1068 return -ENODEV; 957 return -ENODEV;
1069 } 958 }
1070 acpi_set_gpe_type(NULL, ec->common.gpe_bit, ACPI_GPE_TYPE_RUNTIME); 959 acpi_set_gpe_type(NULL, ec->gpe_bit, ACPI_GPE_TYPE_RUNTIME);
1071 acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR); 960 acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_NOT_ISR);
1072 961
1073 status = acpi_install_address_space_handler(ec->common.handle, 962 status = acpi_install_address_space_handler(ec->handle,
1074 ACPI_ADR_SPACE_EC, 963 ACPI_ADR_SPACE_EC,
1075 &acpi_ec_space_handler, 964 &acpi_ec_space_handler,
1076 &acpi_ec_space_setup, ec); 965 &acpi_ec_space_setup, ec);
1077 if (ACPI_FAILURE(status)) { 966 if (ACPI_FAILURE(status)) {
1078 acpi_remove_gpe_handler(NULL, ec->common.gpe_bit, 967 acpi_remove_gpe_handler(NULL, ec->gpe_bit,
1079 &acpi_ec_gpe_handler); 968 &acpi_ec_gpe_handler);
1080 return -ENODEV; 969 return -ENODEV;
1081 } 970 }
@@ -1086,7 +975,7 @@ static int acpi_ec_start(struct acpi_device *device)
1086static int acpi_ec_stop(struct acpi_device *device, int type) 975static int acpi_ec_stop(struct acpi_device *device, int type)
1087{ 976{
1088 acpi_status status = AE_OK; 977 acpi_status status = AE_OK;
1089 union acpi_ec *ec = NULL; 978 struct acpi_ec *ec = NULL;
1090 979
1091 980
1092 if (!device) 981 if (!device)
@@ -1094,14 +983,14 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
1094 983
1095 ec = acpi_driver_data(device); 984 ec = acpi_driver_data(device);
1096 985
1097 status = acpi_remove_address_space_handler(ec->common.handle, 986 status = acpi_remove_address_space_handler(ec->handle,
1098 ACPI_ADR_SPACE_EC, 987 ACPI_ADR_SPACE_EC,
1099 &acpi_ec_space_handler); 988 &acpi_ec_space_handler);
1100 if (ACPI_FAILURE(status)) 989 if (ACPI_FAILURE(status))
1101 return -ENODEV; 990 return -ENODEV;
1102 991
1103 status = 992 status =
1104 acpi_remove_gpe_handler(NULL, ec->common.gpe_bit, 993 acpi_remove_gpe_handler(NULL, ec->gpe_bit,
1105 &acpi_ec_gpe_handler); 994 &acpi_ec_gpe_handler);
1106 if (ACPI_FAILURE(status)) 995 if (ACPI_FAILURE(status))
1107 return -ENODEV; 996 return -ENODEV;
@@ -1113,76 +1002,33 @@ static acpi_status __init
1113acpi_fake_ecdt_callback(acpi_handle handle, 1002acpi_fake_ecdt_callback(acpi_handle handle,
1114 u32 Level, void *context, void **retval) 1003 u32 Level, void *context, void **retval)
1115{ 1004{
1116
1117 if (acpi_ec_poll_mode)
1118 return acpi_fake_ecdt_poll_callback(handle,
1119 Level, context, retval);
1120 else
1121 return acpi_fake_ecdt_intr_callback(handle,
1122 Level, context, retval);
1123}
1124
1125static acpi_status __init
1126acpi_fake_ecdt_poll_callback(acpi_handle handle,
1127 u32 Level, void *context, void **retval)
1128{
1129 acpi_status status;
1130
1131 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
1132 acpi_ec_io_ports, ec_ecdt);
1133 if (ACPI_FAILURE(status))
1134 return status;
1135 ec_ecdt->common.status_addr = ec_ecdt->common.command_addr;
1136
1137 ec_ecdt->common.uid = -1;
1138 acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->common.uid);
1139
1140 status =
1141 acpi_evaluate_integer(handle, "_GPE", NULL,
1142 &ec_ecdt->common.gpe_bit);
1143 if (ACPI_FAILURE(status))
1144 return status;
1145 init_MUTEX(&ec_ecdt->poll.sem);
1146 ec_ecdt->common.global_lock = TRUE;
1147 ec_ecdt->common.handle = handle;
1148
1149 printk(KERN_INFO PREFIX "GPE=0x%02x, ports=0x%2x, 0x%2x\n",
1150 (u32) ec_ecdt->common.gpe_bit,
1151 (u32) ec_ecdt->common.command_addr.address,
1152 (u32) ec_ecdt->common.data_addr.address);
1153
1154 return AE_CTRL_TERMINATE;
1155}
1156
1157static acpi_status __init
1158acpi_fake_ecdt_intr_callback(acpi_handle handle,
1159 u32 Level, void *context, void **retval)
1160{
1161 acpi_status status; 1005 acpi_status status;
1162 1006
1163 init_MUTEX(&ec_ecdt->intr.sem); 1007 init_MUTEX(&ec_ecdt->sem);
1164 init_waitqueue_head(&ec_ecdt->intr.wait); 1008 if (acpi_ec_mode == EC_INTR) {
1009 init_waitqueue_head(&ec_ecdt->wait);
1010 }
1165 status = acpi_walk_resources(handle, METHOD_NAME__CRS, 1011 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
1166 acpi_ec_io_ports, ec_ecdt); 1012 acpi_ec_io_ports, ec_ecdt);
1167 if (ACPI_FAILURE(status)) 1013 if (ACPI_FAILURE(status))
1168 return status; 1014 return status;
1169 ec_ecdt->common.status_addr = ec_ecdt->common.command_addr; 1015 ec_ecdt->status_addr = ec_ecdt->command_addr;
1170 1016
1171 ec_ecdt->common.uid = -1; 1017 ec_ecdt->uid = -1;
1172 acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->common.uid); 1018 acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->uid);
1173 1019
1174 status = 1020 status =
1175 acpi_evaluate_integer(handle, "_GPE", NULL, 1021 acpi_evaluate_integer(handle, "_GPE", NULL,
1176 &ec_ecdt->common.gpe_bit); 1022 &ec_ecdt->gpe_bit);
1177 if (ACPI_FAILURE(status)) 1023 if (ACPI_FAILURE(status))
1178 return status; 1024 return status;
1179 ec_ecdt->common.global_lock = TRUE; 1025 ec_ecdt->global_lock = TRUE;
1180 ec_ecdt->common.handle = handle; 1026 ec_ecdt->handle = handle;
1181 1027
1182 printk(KERN_INFO PREFIX "GPE=0x%02x, ports=0x%2x, 0x%2x\n", 1028 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "GPE=0x%02x, ports=0x%2x, 0x%2x",
1183 (u32) ec_ecdt->common.gpe_bit, 1029 (u32) ec_ecdt->gpe_bit,
1184 (u32) ec_ecdt->common.command_addr.address, 1030 (u32) ec_ecdt->command_addr.address,
1185 (u32) ec_ecdt->common.data_addr.address); 1031 (u32) ec_ecdt->data_addr.address));
1186 1032
1187 return AE_CTRL_TERMINATE; 1033 return AE_CTRL_TERMINATE;
1188} 1034}
@@ -1202,14 +1048,14 @@ static int __init acpi_ec_fake_ecdt(void)
1202 acpi_status status; 1048 acpi_status status;
1203 int ret = 0; 1049 int ret = 0;
1204 1050
1205 printk(KERN_INFO PREFIX "Try to make an fake ECDT\n"); 1051 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Try to make an fake ECDT"));
1206 1052
1207 ec_ecdt = kmalloc(sizeof(union acpi_ec), GFP_KERNEL); 1053 ec_ecdt = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
1208 if (!ec_ecdt) { 1054 if (!ec_ecdt) {
1209 ret = -ENOMEM; 1055 ret = -ENOMEM;
1210 goto error; 1056 goto error;
1211 } 1057 }
1212 memset(ec_ecdt, 0, sizeof(union acpi_ec)); 1058 memset(ec_ecdt, 0, sizeof(struct acpi_ec));
1213 1059
1214 status = acpi_get_devices(ACPI_EC_HID, 1060 status = acpi_get_devices(ACPI_EC_HID,
1215 acpi_fake_ecdt_callback, NULL, NULL); 1061 acpi_fake_ecdt_callback, NULL, NULL);
@@ -1217,24 +1063,16 @@ static int __init acpi_ec_fake_ecdt(void)
1217 kfree(ec_ecdt); 1063 kfree(ec_ecdt);
1218 ec_ecdt = NULL; 1064 ec_ecdt = NULL;
1219 ret = -ENODEV; 1065 ret = -ENODEV;
1066 ACPI_EXCEPTION((AE_INFO, status, "Can't make an fake ECDT"));
1220 goto error; 1067 goto error;
1221 } 1068 }
1222 return 0; 1069 return 0;
1223 error: 1070 error:
1224 printk(KERN_ERR PREFIX "Can't make an fake ECDT\n");
1225 return ret; 1071 return ret;
1226} 1072}
1227 1073
1228static int __init acpi_ec_get_real_ecdt(void) 1074static int __init acpi_ec_get_real_ecdt(void)
1229{ 1075{
1230 if (acpi_ec_poll_mode)
1231 return acpi_ec_poll_get_real_ecdt();
1232 else
1233 return acpi_ec_intr_get_real_ecdt();
1234}
1235
1236static int __init acpi_ec_poll_get_real_ecdt(void)
1237{
1238 acpi_status status; 1076 acpi_status status;
1239 struct acpi_table_ecdt *ecdt_ptr; 1077 struct acpi_table_ecdt *ecdt_ptr;
1240 1078
@@ -1244,80 +1082,37 @@ static int __init acpi_ec_poll_get_real_ecdt(void)
1244 if (ACPI_FAILURE(status)) 1082 if (ACPI_FAILURE(status))
1245 return -ENODEV; 1083 return -ENODEV;
1246 1084
1247 printk(KERN_INFO PREFIX "Found ECDT\n"); 1085 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found ECDT"));
1248 1086
1249 /* 1087 /*
1250 * Generate a temporary ec context to use until the namespace is scanned 1088 * Generate a temporary ec context to use until the namespace is scanned
1251 */ 1089 */
1252 ec_ecdt = kmalloc(sizeof(union acpi_ec), GFP_KERNEL); 1090 ec_ecdt = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
1253 if (!ec_ecdt) 1091 if (!ec_ecdt)
1254 return -ENOMEM; 1092 return -ENOMEM;
1255 memset(ec_ecdt, 0, sizeof(union acpi_ec)); 1093 memset(ec_ecdt, 0, sizeof(struct acpi_ec));
1256
1257 ec_ecdt->common.command_addr = ecdt_ptr->ec_control;
1258 ec_ecdt->common.status_addr = ecdt_ptr->ec_control;
1259 ec_ecdt->common.data_addr = ecdt_ptr->ec_data;
1260 ec_ecdt->common.gpe_bit = ecdt_ptr->gpe_bit;
1261 init_MUTEX(&ec_ecdt->poll.sem);
1262 /* use the GL just to be safe */
1263 ec_ecdt->common.global_lock = TRUE;
1264 ec_ecdt->common.uid = ecdt_ptr->uid;
1265 1094
1266 status = 1095 init_MUTEX(&ec_ecdt->sem);
1267 acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->common.handle); 1096 if (acpi_ec_mode == EC_INTR) {
1268 if (ACPI_FAILURE(status)) { 1097 init_waitqueue_head(&ec_ecdt->wait);
1269 goto error;
1270 } 1098 }
1271 1099 ec_ecdt->command_addr = ecdt_ptr->ec_control;
1272 return 0; 1100 ec_ecdt->status_addr = ecdt_ptr->ec_control;
1273 error: 1101 ec_ecdt->data_addr = ecdt_ptr->ec_data;
1274 printk(KERN_ERR PREFIX "Could not use ECDT\n"); 1102 ec_ecdt->gpe_bit = ecdt_ptr->gpe_bit;
1275 kfree(ec_ecdt);
1276 ec_ecdt = NULL;
1277
1278 return -ENODEV;
1279}
1280
1281static int __init acpi_ec_intr_get_real_ecdt(void)
1282{
1283 acpi_status status;
1284 struct acpi_table_ecdt *ecdt_ptr;
1285
1286 status = acpi_get_firmware_table("ECDT", 1, ACPI_LOGICAL_ADDRESSING,
1287 (struct acpi_table_header **)
1288 &ecdt_ptr);
1289 if (ACPI_FAILURE(status))
1290 return -ENODEV;
1291
1292 printk(KERN_INFO PREFIX "Found ECDT\n");
1293
1294 /*
1295 * Generate a temporary ec context to use until the namespace is scanned
1296 */
1297 ec_ecdt = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
1298 if (!ec_ecdt)
1299 return -ENOMEM;
1300 memset(ec_ecdt, 0, sizeof(union acpi_ec));
1301
1302 init_MUTEX(&ec_ecdt->intr.sem);
1303 init_waitqueue_head(&ec_ecdt->intr.wait);
1304 ec_ecdt->common.command_addr = ecdt_ptr->ec_control;
1305 ec_ecdt->common.status_addr = ecdt_ptr->ec_control;
1306 ec_ecdt->common.data_addr = ecdt_ptr->ec_data;
1307 ec_ecdt->common.gpe_bit = ecdt_ptr->gpe_bit;
1308 /* use the GL just to be safe */ 1103 /* use the GL just to be safe */
1309 ec_ecdt->common.global_lock = TRUE; 1104 ec_ecdt->global_lock = TRUE;
1310 ec_ecdt->common.uid = ecdt_ptr->uid; 1105 ec_ecdt->uid = ecdt_ptr->uid;
1311 1106
1312 status = 1107 status =
1313 acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->common.handle); 1108 acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->handle);
1314 if (ACPI_FAILURE(status)) { 1109 if (ACPI_FAILURE(status)) {
1315 goto error; 1110 goto error;
1316 } 1111 }
1317 1112
1318 return 0; 1113 return 0;
1319 error: 1114 error:
1320 printk(KERN_ERR PREFIX "Could not use ECDT\n"); 1115 ACPI_EXCEPTION((AE_INFO, status, "Could not use ECDT"));
1321 kfree(ec_ecdt); 1116 kfree(ec_ecdt);
1322 ec_ecdt = NULL; 1117 ec_ecdt = NULL;
1323 1118
@@ -1342,14 +1137,14 @@ int __init acpi_ec_ecdt_probe(void)
1342 /* 1137 /*
1343 * Install GPE handler 1138 * Install GPE handler
1344 */ 1139 */
1345 status = acpi_install_gpe_handler(NULL, ec_ecdt->common.gpe_bit, 1140 status = acpi_install_gpe_handler(NULL, ec_ecdt->gpe_bit,
1346 ACPI_GPE_EDGE_TRIGGERED, 1141 ACPI_GPE_EDGE_TRIGGERED,
1347 &acpi_ec_gpe_handler, ec_ecdt); 1142 &acpi_ec_gpe_handler, ec_ecdt);
1348 if (ACPI_FAILURE(status)) { 1143 if (ACPI_FAILURE(status)) {
1349 goto error; 1144 goto error;
1350 } 1145 }
1351 acpi_set_gpe_type(NULL, ec_ecdt->common.gpe_bit, ACPI_GPE_TYPE_RUNTIME); 1146 acpi_set_gpe_type(NULL, ec_ecdt->gpe_bit, ACPI_GPE_TYPE_RUNTIME);
1352 acpi_enable_gpe(NULL, ec_ecdt->common.gpe_bit, ACPI_NOT_ISR); 1147 acpi_enable_gpe(NULL, ec_ecdt->gpe_bit, ACPI_NOT_ISR);
1353 1148
1354 status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT, 1149 status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT,
1355 ACPI_ADR_SPACE_EC, 1150 ACPI_ADR_SPACE_EC,
@@ -1357,7 +1152,7 @@ int __init acpi_ec_ecdt_probe(void)
1357 &acpi_ec_space_setup, 1152 &acpi_ec_space_setup,
1358 ec_ecdt); 1153 ec_ecdt);
1359 if (ACPI_FAILURE(status)) { 1154 if (ACPI_FAILURE(status)) {
1360 acpi_remove_gpe_handler(NULL, ec_ecdt->common.gpe_bit, 1155 acpi_remove_gpe_handler(NULL, ec_ecdt->gpe_bit,
1361 &acpi_ec_gpe_handler); 1156 &acpi_ec_gpe_handler);
1362 goto error; 1157 goto error;
1363 } 1158 }
@@ -1365,7 +1160,7 @@ int __init acpi_ec_ecdt_probe(void)
1365 return 0; 1160 return 0;
1366 1161
1367 error: 1162 error:
1368 printk(KERN_ERR PREFIX "Could not use ECDT\n"); 1163 ACPI_EXCEPTION((AE_INFO, status, "Could not use ECDT"));
1369 kfree(ec_ecdt); 1164 kfree(ec_ecdt);
1370 ec_ecdt = NULL; 1165 ec_ecdt = NULL;
1371 1166
@@ -1424,13 +1219,13 @@ static int __init acpi_ec_set_intr_mode(char *str)
1424 return 0; 1219 return 0;
1425 1220
1426 if (intr) { 1221 if (intr) {
1427 acpi_ec_poll_mode = EC_INTR; 1222 acpi_ec_mode = EC_INTR;
1428 acpi_ec_driver.ops.add = acpi_ec_intr_add;
1429 } else { 1223 } else {
1430 acpi_ec_poll_mode = EC_POLL; 1224 acpi_ec_mode = EC_POLL;
1431 acpi_ec_driver.ops.add = acpi_ec_poll_add;
1432 } 1225 }
1433 printk(KERN_INFO PREFIX "EC %s mode.\n", intr ? "interrupt" : "polling"); 1226 acpi_ec_driver.ops.add = acpi_ec_add;
1227 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "EC %s mode.\n", intr ? "interrupt" : "polling"));
1228
1434 return 1; 1229 return 1;
1435} 1230}
1436 1231
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-22 14:23:50 -0500