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hwmon: (asus_atk0110) Override interface detection on Sabertooth X58

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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>
This commit is contained in:
Luca Tettamanti 2011-01-22 16:07:11 +01:00 committed by Guenter Roeck
parent 9d1f8a40dd
commit 86ca33e825
1 changed files with 22 additions and 1 deletions
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23
drivers/hwmon/asus_atk0110.c
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@ -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);