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authorLuca Tettamanti <kronos.it@gmail.com>2011-01-22 16:07:11 +0100
committerGuenter Roeck <guenter.roeck@ericsson.com>2011-01-23 09:30:08 -0800
commit86ca33e82597c0aeb15fbdfb9619e86ef6b0f704 (patch)
treeaffd4f5f31d8295f0f629512325ece4621ba78f4 /drivers/hwmon/asus_atk0110.c
parent9d1f8a40ddab65a5cedb69b369ee4c0c6e4acf6b (diff)
downloadop-kernel-dev-86ca33e82597c0aeb15fbdfb9619e86ef6b0f704.zip
op-kernel-dev-86ca33e82597c0aeb15fbdfb9619e86ef6b0f704.tar.gz
hwmon: (asus_atk0110) Override interface detection on Sabertooth X58
ASUS Sabertooth X58 has a bug in ACPI that prevents the reading of MCH temperature when the "old" ATK0110 interface is used. Add a DMI entry to override the detection heuristic and force the use of the "new" interface on this board. Signed-off-by: Luca Tettamanti <kronos.it@gmail.com> Tested-by: Joris Creyghton <jorisctn@gmail.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to 'drivers/hwmon/asus_atk0110.c')
-rw-r--r--drivers/hwmon/asus_atk0110.c23
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/hwmon/asus_atk0110.c b/drivers/hwmon/asus_atk0110.c
index 2d68cf3..b5e8920 100644
--- a/drivers/hwmon/asus_atk0110.c
+++ b/drivers/hwmon/asus_atk0110.c
@@ -13,6 +13,7 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/dmi.h>
#include <acpi/acpi.h>
#include <acpi/acpixf.h>
@@ -22,6 +23,21 @@
#define ATK_HID "ATK0110"
+static bool new_if;
+module_param(new_if, bool, 0);
+MODULE_PARM_DESC(new_if, "Override detection heuristic and force the use of the new ATK0110 interface");
+
+static const struct dmi_system_id __initconst atk_force_new_if[] = {
+ {
+ /* Old interface has broken MCH temp monitoring */
+ .ident = "Asus Sabertooth X58",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_NAME, "SABERTOOTH X58")
+ }
+ },
+ { }
+};
+
/* Minimum time between readings, enforced in order to avoid
* hogging the CPU.
*/
@@ -1302,7 +1318,9 @@ static int atk_probe_if(struct atk_data *data)
* analysis of multiple DSDTs indicates that when both interfaces
* are present the new one (GGRP/GITM) is not functional.
*/
- if (data->rtmp_handle && data->rvlt_handle && data->rfan_handle)
+ if (new_if)
+ dev_info(dev, "Overriding interface detection\n");
+ if (data->rtmp_handle && data->rvlt_handle && data->rfan_handle && !new_if)
data->old_interface = true;
else if (data->enumerate_handle && data->read_handle &&
data->write_handle)
@@ -1420,6 +1438,9 @@ static int __init atk0110_init(void)
return -EBUSY;
}
+ if (dmi_check_system(atk_force_new_if))
+ new_if = true;
+
ret = acpi_bus_register_driver(&atk_driver);
if (ret)
pr_info("acpi_bus_register_driver failed: %d\n", ret);
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