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authorElia Devito <eliadevito@gmail.com>2020-10-05 00:13:05 +0300
committerHans de Goede <hdegoede@redhat.com>2020-10-07 17:03:23 +0300
commit81c93798ef3ebd2109dc24371db3cc14cdf77777 (patch)
tree066cd4cde01b39a70f07c321591d6409353122d5 /drivers/platform
parent1797d588af15174d4a4e7159dac8c800538e4f8c (diff)
downloadlinux-81c93798ef3ebd2109dc24371db3cc14cdf77777.tar.xz
platform/x86: hp-wmi: add support for thermal policy
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>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/hp-wmi.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 1762f335bac9..ecd477964d11 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -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;
}