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Date: Mon, 14 Mar 2022 12:41:48 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: Enver Balalic <balalic.enver@...il.com>, markgross@...nel.org,
platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
pobrn@...tonmail.com
Subject: Re: [PATCH] platform/x86: hp-wmi: support omen thermal profile policy
v1
Hi,
Thank you for your patch. Some other changes have just landed to
the hp-wmi driver, so for the next version please base your patch
on my review-hans branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans
On 3/13/22 20:05, Enver Balalic wrote:
> As it turns out, these laptops have 2 thermal profile versions.
> A previous patch added support for v0, this patch adds support
> for v1 thermal policies that are in use on some devices.
> We obtain the thermal policy version by querying the get system
> design data WMI call and looking at the fourth byte it returns,
> except if the system board DMI Board ID is in a specific array
> that the windows command center app overrides to thermal policy
> v0 for some reason.
>
> Signed-off-by: Enver Balalic <balalic.enver@...il.com>
> ---
> drivers/platform/x86/hp-wmi.c | 69 +++++++++++++++++++++++++++++++----
> 1 file changed, 62 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
> index 48a46466f086..ed5c729f8da1 100644
> --- a/drivers/platform/x86/hp-wmi.c
> +++ b/drivers/platform/x86/hp-wmi.c
> @@ -61,6 +61,14 @@ static const char * const omen_thermal_profile_boards[] = {
> "8917", "8918", "8949", "894A", "89EB"
> };
>
> +/* DMI Board names of Omen laptops that are specifically set to be thermal
> + * profile version 0 by the Omen Command Center app, regardless of what
> + * the get system design information WMI call returns
> + */
> +static const char *const omen_thermal_profile_force_v0_boards[] = {
> + "8607", "8746", "8747", "8749", "874A", "8748"
> +};
> +
> enum hp_wmi_radio {
> HPWMI_WIFI = 0x0,
> HPWMI_BLUETOOTH = 0x1,
> @@ -115,6 +123,7 @@ enum hp_wmi_gm_commandtype {
> HPWMI_SET_PERFORMANCE_MODE = 0x1A,
> HPWMI_FAN_SPEED_MAX_GET_QUERY = 0x26,
> HPWMI_FAN_SPEED_MAX_SET_QUERY = 0x27,
> + HPWMI_GET_SYSTEM_DESIGN_DATA = 0x28,
> };
>
> enum hp_wmi_command {
> @@ -149,6 +158,12 @@ enum hp_wireless2_bits {
> HPWMI_POWER_FW_OR_HW = HPWMI_POWER_BIOS | HPWMI_POWER_HARD,
> };
>
> +enum hp_thermal_profile_omen_v1 {
> + HP_OMEN_V1_THERMAL_PROFILE_DEFAULT = 0x30,
> + HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE = 0x31,
> + HP_OMEN_V1_THERMAL_PROFILE_COOL = 0x50,
> +};
> +
Maybe also rename the V0 values to HP_OMEN_V0_THERMAL_PROFILE_?
for consistency ?
> enum hp_thermal_profile_omen {
> HP_OMEN_THERMAL_PROFILE_DEFAULT = 0x00,
> HP_OMEN_THERMAL_PROFILE_PERFORMANCE = 0x01,
> @@ -360,9 +375,6 @@ static int omen_thermal_profile_set(int mode)
> char buffer[2] = {0, mode};
> int ret;
>
> - if (mode < 0 || mode > 2)
> - return -EINVAL;
> -
> ret = hp_wmi_perform_query(HPWMI_SET_PERFORMANCE_MODE, HPWMI_GM,
> &buffer, sizeof(buffer), sizeof(buffer));
>
> @@ -384,6 +396,30 @@ static bool is_omen_thermal_profile(void)
> board_name) >= 0;
> }
>
> +static int omen_get_thermal_policy_version(void)
> +{
> + unsigned char buffer[8] = { 0 };
> + int ret;
> +
> + const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
> +
> + if (board_name) {
> + int matches = match_string(omen_thermal_profile_force_v0_boards,
> + ARRAY_SIZE(omen_thermal_profile_force_v0_boards),
> + board_name);
> + if (matches >= 0)
> + return 1;
This seems wrong, shouldn't this be "return 0" so that the v0 interface
actually gets used, rather then the v1 interface?
> + }
> +
> + ret = hp_wmi_perform_query(HPWMI_GET_SYSTEM_DESIGN_DATA, HPWMI_GM,
> + &buffer, sizeof(buffer), sizeof(buffer));
> +
> + if (ret)
> + return ret < 0 ? ret : -EINVAL;
> +
> + return buffer[3];
> +}
> +
> static int omen_thermal_profile_get(void)
> {
> u8 data;
> @@ -1009,12 +1045,15 @@ static int platform_profile_omen_get(struct platform_profile_handler *pprof,
>
> switch (tp) {
> case HP_OMEN_THERMAL_PROFILE_PERFORMANCE:
> + case HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE:
> *profile = PLATFORM_PROFILE_PERFORMANCE;
> break;
> case HP_OMEN_THERMAL_PROFILE_DEFAULT:
> + case HP_OMEN_V1_THERMAL_PROFILE_DEFAULT:
> *profile = PLATFORM_PROFILE_BALANCED;
> break;
> case HP_OMEN_THERMAL_PROFILE_COOL:
> + case HP_OMEN_V1_THERMAL_PROFILE_COOL:
> *profile = PLATFORM_PROFILE_COOL;
> break;
> default:
> @@ -1027,23 +1066,38 @@ static int platform_profile_omen_get(struct platform_profile_handler *pprof,
> static int platform_profile_omen_set(struct platform_profile_handler *pprof,
> enum platform_profile_option profile)
> {
> - int err, tp;
> + int err, tp, tp_version;
> +
> + tp_version = omen_get_thermal_policy_version();
> +
> + if (tp_version < 0 || tp_version > 1)
> + return -EOPNOTSUPP;
>
> switch (profile) {
> case PLATFORM_PROFILE_PERFORMANCE:
> - tp = HP_OMEN_THERMAL_PROFILE_PERFORMANCE;
> + if (tp_version == 0)
> + tp = HP_OMEN_THERMAL_PROFILE_PERFORMANCE;
> + else
> + tp = HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE;
> break;
> case PLATFORM_PROFILE_BALANCED:
> - tp = HP_OMEN_THERMAL_PROFILE_DEFAULT;
> + if (tp_version == 0)
> + tp = HP_OMEN_THERMAL_PROFILE_DEFAULT;
> + else
> + tp = HP_OMEN_V1_THERMAL_PROFILE_DEFAULT;
> break;
> case PLATFORM_PROFILE_COOL:
> - tp = HP_OMEN_THERMAL_PROFILE_COOL;
> + if (tp_version == 0)
> + tp = HP_OMEN_THERMAL_PROFILE_COOL;
> + else
> + tp = HP_OMEN_V1_THERMAL_PROFILE_COOL;
> break;
> default:
> return -EOPNOTSUPP;
> }
>
> err = omen_thermal_profile_set(tp);
> +
Please drop this unnecessary blank-line addition.
> if (err < 0)
> return err;
>
> @@ -1128,6 +1182,7 @@ static int thermal_profile_setup(void)
> */
>
> err = omen_thermal_profile_set(tp);
> +
Please drop this unnecessary blank-line addition.
> if (err < 0)
> return err;
>
Regards,
Hans
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