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authorDmitry Torokhov <dtor_core@ameritech.net>2005-06-25 17:54:28 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-25 19:24:25 -0400
commit7e0fa31dbf5968ce1e94f73c04a9402170432ecf (patch)
treea45e42645955a42df960f405da11a7943edabded /drivers/char
parent8378b92405dd606c6f3a0b1e303b67c8f8c9f743 (diff)
[PATCH] I8K: add new BIOS signatures
I8K: add BIOS signatures of a newer Dell laptops, also there can be more than one temperature sensor reported by BIOS. Lifted from driver 1.25 on Massimo Dal Zotto's site. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/i8k.c32
1 files changed, 24 insertions, 8 deletions
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index 584e9a4a6f18..6c4b3f986d0c 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -35,7 +35,8 @@
35#define I8K_SMM_GET_FAN 0x00a3 35#define I8K_SMM_GET_FAN 0x00a3
36#define I8K_SMM_GET_SPEED 0x02a3 36#define I8K_SMM_GET_SPEED 0x02a3
37#define I8K_SMM_GET_TEMP 0x10a3 37#define I8K_SMM_GET_TEMP 0x10a3
38#define I8K_SMM_GET_DELL_SIG 0xffa3 38#define I8K_SMM_GET_DELL_SIG1 0xfea3
39#define I8K_SMM_GET_DELL_SIG2 0xffa3
39#define I8K_SMM_BIOS_VERSION 0x00a6 40#define I8K_SMM_BIOS_VERSION 0x00a6
40 41
41#define I8K_FAN_MULT 30 42#define I8K_FAN_MULT 30
@@ -226,7 +227,7 @@ static int i8k_set_fan(int fan, int speed)
226/* 227/*
227 * Read the cpu temperature. 228 * Read the cpu temperature.
228 */ 229 */
229static int i8k_get_cpu_temp(void) 230static int i8k_get_temp(int sensor)
230{ 231{
231 struct smm_regs regs = { .eax = I8K_SMM_GET_TEMP, }; 232 struct smm_regs regs = { .eax = I8K_SMM_GET_TEMP, };
232 int rc; 233 int rc;
@@ -235,7 +236,7 @@ static int i8k_get_cpu_temp(void)
235#ifdef I8K_TEMPERATURE_BUG 236#ifdef I8K_TEMPERATURE_BUG
236 static int prev; 237 static int prev;
237#endif 238#endif
238 239 regs.ebx = sensor & 0xff;
239 if ((rc = i8k_smm(&regs)) < 0) 240 if ((rc = i8k_smm(&regs)) < 0)
240 return rc; 241 return rc;
241 242
@@ -260,9 +261,9 @@ static int i8k_get_cpu_temp(void)
260 return temp; 261 return temp;
261} 262}
262 263
263static int i8k_get_dell_signature(void) 264static int i8k_get_dell_signature(int req_fn)
264{ 265{
265 struct smm_regs regs = { .eax = I8K_SMM_GET_DELL_SIG, }; 266 struct smm_regs regs = { .eax = req_fn, };
266 int rc; 267 int rc;
267 268
268 if ((rc = i8k_smm(&regs)) < 0) 269 if ((rc = i8k_smm(&regs)) < 0)
@@ -301,7 +302,7 @@ static int i8k_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
301 break; 302 break;
302 303
303 case I8K_GET_TEMP: 304 case I8K_GET_TEMP:
304 val = i8k_get_cpu_temp(); 305 val = i8k_get_temp(0);
305 break; 306 break;
306 307
307 case I8K_GET_SPEED: 308 case I8K_GET_SPEED:
@@ -367,7 +368,7 @@ static int i8k_proc_show(struct seq_file *seq, void *offset)
367 int fn_key, cpu_temp, ac_power; 368 int fn_key, cpu_temp, ac_power;
368 int left_fan, right_fan, left_speed, right_speed; 369 int left_fan, right_fan, left_speed, right_speed;
369 370
370 cpu_temp = i8k_get_cpu_temp(); /* 11100 µs */ 371 cpu_temp = i8k_get_temp(0); /* 11100 µs */
371 left_fan = i8k_get_fan_status(I8K_FAN_LEFT); /* 580 µs */ 372 left_fan = i8k_get_fan_status(I8K_FAN_LEFT); /* 580 µs */
372 right_fan = i8k_get_fan_status(I8K_FAN_RIGHT); /* 580 µs */ 373 right_fan = i8k_get_fan_status(I8K_FAN_RIGHT); /* 580 µs */
373 left_speed = i8k_get_fan_speed(I8K_FAN_LEFT); /* 580 µs */ 374 left_speed = i8k_get_fan_speed(I8K_FAN_LEFT); /* 580 µs */
@@ -421,6 +422,20 @@ static struct dmi_system_id __initdata i8k_dmi_table[] = {
421 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"), 422 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
422 }, 423 },
423 }, 424 },
425 {
426 .ident = "Dell Inspiron 2",
427 .matches = {
428 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
429 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron"),
430 },
431 },
432 {
433 .ident = "Dell Latitude 2",
434 .matches = {
435 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
436 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
437 },
438 },
424 { } 439 { }
425}; 440};
426 441
@@ -451,7 +466,8 @@ static int __init i8k_probe(void)
451 /* 466 /*
452 * Get SMM Dell signature 467 * Get SMM Dell signature
453 */ 468 */
454 if (i8k_get_dell_signature() != 0) { 469 if (i8k_get_dell_signature(I8K_SMM_GET_DELL_SIG1) &&
470 i8k_get_dell_signature(I8K_SMM_GET_DELL_SIG2)) {
455 printk(KERN_ERR "i8k: unable to get SMM Dell signature\n"); 471 printk(KERN_ERR "i8k: unable to get SMM Dell signature\n");
456 if (!force) 472 if (!force)
457 return -ENODEV; 473 return -ENODEV;