From 7e0fa31dbf5968ce1e94f73c04a9402170432ecf Mon Sep 17 00:00:00 2001
From: Dmitry Torokhov <dtor_core@ameritech.net>
Date: Sat, 25 Jun 2005 14:54:28 -0700
Subject: [PATCH] [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>
---
drivers/char/i8k.c | 32 ++++++++++++++++++++++++--------
1 file changed, 24 insertions(+), 8 deletions(-)
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index 584e9a4a6f18c..6c4b3f986d0cc 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -35,7 +35,8 @@
#define I8K_SMM_GET_FAN 0x00a3
#define I8K_SMM_GET_SPEED 0x02a3
#define I8K_SMM_GET_TEMP 0x10a3
-#define I8K_SMM_GET_DELL_SIG 0xffa3
+#define I8K_SMM_GET_DELL_SIG1 0xfea3
+#define I8K_SMM_GET_DELL_SIG2 0xffa3
#define I8K_SMM_BIOS_VERSION 0x00a6
#define I8K_FAN_MULT 30
@@ -226,7 +227,7 @@ static int i8k_set_fan(int fan, int speed)
/*
* Read the cpu temperature.
*/
-static int i8k_get_cpu_temp(void)
+static int i8k_get_temp(int sensor)
{
struct smm_regs regs = { .eax = I8K_SMM_GET_TEMP, };
int rc;
@@ -235,7 +236,7 @@ static int i8k_get_cpu_temp(void)
#ifdef I8K_TEMPERATURE_BUG
static int prev;
#endif
-
+ regs.ebx = sensor & 0xff;
if ((rc = i8k_smm(®s)) < 0)
return rc;
@@ -260,9 +261,9 @@ static int i8k_get_cpu_temp(void)
return temp;
}
-static int i8k_get_dell_signature(void)
+static int i8k_get_dell_signature(int req_fn)
{
- struct smm_regs regs = { .eax = I8K_SMM_GET_DELL_SIG, };
+ struct smm_regs regs = { .eax = req_fn, };
int rc;
if ((rc = i8k_smm(®s)) < 0)
@@ -301,7 +302,7 @@ static int i8k_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
break;
case I8K_GET_TEMP:
- val = i8k_get_cpu_temp();
+ val = i8k_get_temp(0);
break;
case I8K_GET_SPEED:
@@ -367,7 +368,7 @@ static int i8k_proc_show(struct seq_file *seq, void *offset)
int fn_key, cpu_temp, ac_power;
int left_fan, right_fan, left_speed, right_speed;
- cpu_temp = i8k_get_cpu_temp(); /* 11100 µs */
+ cpu_temp = i8k_get_temp(0); /* 11100 µs */
left_fan = i8k_get_fan_status(I8K_FAN_LEFT); /* 580 µs */
right_fan = i8k_get_fan_status(I8K_FAN_RIGHT); /* 580 µs */
left_speed = i8k_get_fan_speed(I8K_FAN_LEFT); /* 580 µs */
@@ -421,6 +422,20 @@ static struct dmi_system_id __initdata i8k_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
},
},
+ {
+ .ident = "Dell Inspiron 2",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron"),
+ },
+ },
+ {
+ .ident = "Dell Latitude 2",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
+ },
+ },
{ }
};
@@ -451,7 +466,8 @@ static int __init i8k_probe(void)
/*
* Get SMM Dell signature
*/
- if (i8k_get_dell_signature() != 0) {
+ if (i8k_get_dell_signature(I8K_SMM_GET_DELL_SIG1) &&
+ i8k_get_dell_signature(I8K_SMM_GET_DELL_SIG2)) {
printk(KERN_ERR "i8k: unable to get SMM Dell signature\n");
if (!force)
return -ENODEV;
--
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