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platform/x86: hp-wmi: add support for thermal policy

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HP Spectre notebooks (and probably other model as well)
support up to 4 thermal policy:
 - HP Recommended
 - Performance
 - Cool
 - Quiet

at least on HP Spectre x360 Convertible 15-df0xxx the firmware sets the
thermal policy to default but hardcode the odvp0 variable to 1, this causes
thermald to choose the wrong DPTF profile witch result in low performance
when notebook is on AC, calling thermal policy write command allow firmware
to correctly set the odvp0 variable.

Signed-off-by: Elia Devito <eliadevito@gmail.com>
Link: https://lore.kernel.org/r/20201004211305.11628-1-eliadevito@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Elia Devito 2020-10-04 23:13:05 +02:00 committed by Hans de Goede
parent 1797d588af
commit 81c93798ef
1 changed files with 23 additions and 0 deletions
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23
drivers/platform/x86/hp-wmi.c
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@ -81,6 +81,7 @@ enum hp_wmi_commandtype {
HPWMI_FEATURE2_QUERY = 0x0d,
HPWMI_WIRELESS2_QUERY = 0x1b,
HPWMI_POSTCODEERROR_QUERY = 0x2a,
HPWMI_THERMAL_POLICY_QUERY = 0x4c,
};
enum hp_wmi_command {
@ -861,6 +862,26 @@ fail:
return err;
}
static int thermal_policy_setup(struct platform_device *device)
{
int err, tp;
tp = hp_wmi_read_int(HPWMI_THERMAL_POLICY_QUERY);
if (tp < 0)
return tp;
/*
* call thermal policy write command to ensure that the firmware correctly
* sets the OEM variables for the DPTF
*/
err = hp_wmi_perform_query(HPWMI_THERMAL_POLICY_QUERY, HPWMI_WRITE, &tp,
sizeof(tp), 0);
if (err)
return err;
return 0;
}
static int __init hp_wmi_bios_setup(struct platform_device *device)
{
/* clear detected rfkill devices */
@ -872,6 +893,8 @@ static int __init hp_wmi_bios_setup(struct platform_device *device)
if (hp_wmi_rfkill_setup(device))
hp_wmi_rfkill2_setup(device);
thermal_policy_setup(device);
return 0;
}