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| author | Len Brown <len.brown@intel.com> | 2007-08-12 00:13:02 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-08-12 00:13:02 -0400 |
| commit | 0b5bfa1cbefdc6e4c60f30ed545389b5ffe0f75f (patch) | |
| tree | d6d9165f003bed59b0dc223babeadb2b667f92fb /drivers/acpi | |
| parent | f8707ec9643769957065405b5090e4aa64fd8214 (diff) | |
| download | kernel_goldelico_gta04-0b5bfa1cbefdc6e4c60f30ed545389b5ffe0f75f.zip kernel_goldelico_gta04-0b5bfa1cbefdc6e4c60f30ed545389b5ffe0f75f.tar.gz kernel_goldelico_gta04-0b5bfa1cbefdc6e4c60f30ed545389b5ffe0f75f.tar.bz2 | |
ACPI: thermal: add DMI hooks to handle AOpen's broken Award BIOS
Use DMI to:
1. enable polling (BIOS thermal events are broken)
2. disable active trip points (BIOS fan control is broken)
3. disable passive trip point (BIOS hard-codes it too low)
The actual temperature reading does work,
and with the aid of polling, the critical
trip point should work too.
http://bugzilla.kernel.org/show_bug.cgi?id=8842
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/thermal.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 3521c37..1e06159 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -33,6 +33,7 @@ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/dmi.h> #include <linux/init.h> #include <linux/types.h> #include <linux/proc_fs.h> @@ -1328,10 +1329,74 @@ static int acpi_thermal_resume(struct acpi_device *device) return AE_OK; } +#ifdef CONFIG_DMI +static int thermal_act(struct dmi_system_id *d) { + + if (act == 0) { + printk(KERN_NOTICE "ACPI: %s detected: " + "disabling all active thermal trip points\n", d->ident); + act = -1; + } + return 0; +} +static int thermal_tzp(struct dmi_system_id *d) { + + if (tzp == 0) { + printk(KERN_NOTICE "ACPI: %s detected: " + "enabling thermal zone polling\n", d->ident); + tzp = 300; /* 300 dS = 30 Seconds */ + } + return 0; +} +static int thermal_psv(struct dmi_system_id *d) { + + if (psv == 0) { + printk(KERN_NOTICE "ACPI: %s detected: " + "disabling all passive thermal trip points\n", d->ident); + psv = -1; + } + return 0; +} + +static struct dmi_system_id thermal_dmi_table[] __initdata = { + /* + * Award BIOS on this AOpen makes thermal control almost worthless. + * http://bugzilla.kernel.org/show_bug.cgi?id=8842 + */ + { + .callback = thermal_act, + .ident = "AOpen i915GMm-HFS", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), + DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), + }, + }, + { + .callback = thermal_psv, + .ident = "AOpen i915GMm-HFS", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), + DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), + }, + }, + { + .callback = thermal_tzp, + .ident = "AOpen i915GMm-HFS", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), + DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), + }, + }, + {} +}; +#endif /* CONFIG_DMI */ + static int __init acpi_thermal_init(void) { int result = 0; + dmi_check_system(thermal_dmi_table); + if (off) { printk(KERN_NOTICE "ACPI: thermal control disabled\n"); return -ENODEV; |