Re: [PATCH v2 05/18] ACPI: platform_profile: Add `probe` to platform_profile_ops

Mario Limonciello
2025-01-14T16:36:44Z

On 1/14/2025 10:31, Kurt Borja wrote:
> Hi Mario,
>
> On Tue, Jan 14, 2025 at 10:20:15AM -0600, Mario Limonciello wrote:
>> On 1/14/2025 09:37, Kurt Borja wrote:
>>> Add a `probe` callback to platform_profile_ops, which lets drivers
>>> initialize the choices member manually.
>>>
>>> Signed-off-by: Kurt Borja <kuurtb@gmail.com>
>>> ---
>>> drivers/acpi/platform_profile.c | 13 +++++++--
>>> .../surface/surface_platform_profile.c | 16 ++++++----
>>> drivers/platform/x86/acer-wmi.c | 24 ++++++++-------
>>> drivers/platform/x86/amd/pmf/sps.c | 15 ++++++----
>>> drivers/platform/x86/asus-wmi.c | 16 ++++++----
>>> drivers/platform/x86/dell/alienware-wmi.c | 24 +++++++++------
>>> drivers/platform/x86/dell/dell-pc.c | 26 ++++++++++-------
>>> drivers/platform/x86/hp/hp-wmi.c | 29 +++++++++++++------
>>> drivers/platform/x86/ideapad-laptop.c | 15 ++++++----
>>> .../platform/x86/inspur_platform_profile.c | 14 ++++++---
>>> drivers/platform/x86/thinkpad_acpi.c | 15 ++++++----
>>> include/linux/platform_profile.h | 1 +
>>> 12 files changed, 137 insertions(+), 71 deletions(-)
>>>
>>> diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
>>> index 440654e21620..34e22b006ccc 100644
>>> --- a/drivers/acpi/platform_profile.c
>>> +++ b/drivers/acpi/platform_profile.c
>>> @@ -466,12 +466,21 @@ int platform_profile_register(struct platform_profile_handler *pprof, void *drvd
>>> int err;
>>> /* Sanity check the profile handler */
>>> - if (!pprof || bitmap_empty(pprof->choices, PLATFORM_PROFILE_LAST) ||
>>> - !pprof->ops->profile_set || !pprof->ops->profile_get) {
>>> + if (!pprof || !pprof->ops->profile_set || !pprof->ops->profile_get ||
>>> + !pprof->ops->probe) {
>>> pr_err("platform_profile: handler is invalid\n");
>>> return -EINVAL;
>>> }
>>> + err = pprof->ops->probe(drvdata, pprof->choices);
>>> + if (err < 0)
>>
>> Any particular reason to specifically look for less than zero? Did you want
>> to have the probe() return something positive in some circumstances?
>>
>> If not I think this should be fine:
>>
>> if (err)
>
> Ack.
>
> I did it out of habit.
>
>>
>>> + return err;
>>> +
>>> + if (bitmap_empty(pprof->choices, PLATFORM_PROFILE_LAST)) {
>>> + pr_err("platform_profile: no available profiles\n");
>>
>> Doesn't pr_fmt handle the prefix?
>
> This file doesn't have pr_fmt :( I'll log it with dev_err and add a
> pr_fmt in a separate patch.
>

Ooph! There might be some other cases the prefix needs to be fixed then
too. I noticed it in use from some existing code too.

> Thank you again for reviewing this!

Sure!

>
> If Ilpo doesn't have any comments I'll send a v3 right away.
>
> ~ Kurt
>
>>
>>> + return -EINVAL;
>>> + }
>>> +
>>> guard(mutex)(&profile_lock);
>>> /* create class interface for individual handler */
>>> diff --git a/drivers/platform/surface/surface_platform_profile.c b/drivers/platform/surface/surface_platform_profile.c
>>> index 76967bfeeef8..48cfe9cb89c8 100644
>>> --- a/drivers/platform/surface/surface_platform_profile.c
>>> +++ b/drivers/platform/surface/surface_platform_profile.c
>>> @@ -201,7 +201,18 @@ static int ssam_platform_profile_set(struct device *dev,
>>> return tp;
>>> }
>>> +static int ssam_platform_profile_probe(void *drvdata, unsigned long *choices)
>>> +{
>>> + set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
>>> + set_bit(PLATFORM_PROFILE_BALANCED, choices);
>>> + set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, choices);
>>> + set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> static const struct platform_profile_ops ssam_platform_profile_ops = {
>>> + .probe = ssam_platform_profile_probe,
>>> .profile_get = ssam_platform_profile_get,
>>> .profile_set = ssam_platform_profile_set,
>>> };
>>> @@ -223,11 +234,6 @@ static int surface_platform_profile_probe(struct ssam_device *sdev)
>>> tpd->has_fan = device_property_read_bool(&sdev->dev, "has_fan");
>>> - set_bit(PLATFORM_PROFILE_LOW_POWER, tpd->handler.choices);
>>> - set_bit(PLATFORM_PROFILE_BALANCED, tpd->handler.choices);
>>> - set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, tpd->handler.choices);
>>> - set_bit(PLATFORM_PROFILE_PERFORMANCE, tpd->handler.choices);
>>> -
>>> return platform_profile_register(&tpd->handler, tpd);
>>> }
>>> diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
>>> index 91ae48adf6cf..6953e36dbfde 100644
>>> --- a/drivers/platform/x86/acer-wmi.c
>>> +++ b/drivers/platform/x86/acer-wmi.c
>>> @@ -1916,7 +1916,20 @@ acer_predator_v4_platform_profile_set(struct device *dev,
>>> return 0;
>>> }
>>> +static int
>>> +acer_predator_v4_platform_profile_probe(void *drvdata, unsigned long *choices)
>>> +{
>>> + set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
>>> + set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, choices);
>>> + set_bit(PLATFORM_PROFILE_BALANCED, choices);
>>> + set_bit(PLATFORM_PROFILE_QUIET, choices);
>>> + set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> static const struct platform_profile_ops acer_predator_v4_platform_profile_ops = {
>>> + .probe = acer_predator_v4_platform_profile_probe,
>>> .profile_get = acer_predator_v4_platform_profile_get,
>>> .profile_set = acer_predator_v4_platform_profile_set,
>>> };
>>> @@ -1931,17 +1944,6 @@ static int acer_platform_profile_setup(struct platform_device *device)
>>> platform_profile_handler.ops =
>>> &acer_predator_v4_platform_profile_ops;
>>> - set_bit(PLATFORM_PROFILE_PERFORMANCE,
>>> - platform_profile_handler.choices);
>>> - set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE,
>>> - platform_profile_handler.choices);
>>> - set_bit(PLATFORM_PROFILE_BALANCED,
>>> - platform_profile_handler.choices);
>>> - set_bit(PLATFORM_PROFILE_QUIET,
>>> - platform_profile_handler.choices);
>>> - set_bit(PLATFORM_PROFILE_LOW_POWER,
>>> - platform_profile_handler.choices);
>>> -
>>> err = platform_profile_register(&platform_profile_handler, NULL);
>>> if (err)
>>> return err;
>>> diff --git a/drivers/platform/x86/amd/pmf/sps.c b/drivers/platform/x86/amd/pmf/sps.c
>>> index 6ae82ae86d22..e710405b581f 100644
>>> --- a/drivers/platform/x86/amd/pmf/sps.c
>>> +++ b/drivers/platform/x86/amd/pmf/sps.c
>>> @@ -387,7 +387,17 @@ static int amd_pmf_profile_set(struct device *dev,
>>> return 0;
>>> }
>>> +static int amd_pmf_profile_probe(void *drvdata, unsigned long *choices)
>>> +{
>>> + set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
>>> + set_bit(PLATFORM_PROFILE_BALANCED, choices);
>>> + set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> static const struct platform_profile_ops amd_pmf_profile_ops = {
>>> + .probe = amd_pmf_profile_probe,
>>> .profile_get = amd_pmf_profile_get,
>>> .profile_set = amd_pmf_profile_set,
>>> };
>>> @@ -414,11 +424,6 @@ int amd_pmf_init_sps(struct amd_pmf_dev *dev)
>>> dev->pprof.dev = dev->dev;
>>> dev->pprof.ops = &amd_pmf_profile_ops;
>>> - /* Setup supported modes */
>>> - set_bit(PLATFORM_PROFILE_LOW_POWER, dev->pprof.choices);
>>> - set_bit(PLATFORM_PROFILE_BALANCED, dev->pprof.choices);
>>> - set_bit(PLATFORM_PROFILE_PERFORMANCE, dev->pprof.choices);
>>> -
>>> /* Create platform_profile structure and register */
>>> err = platform_profile_register(&dev->pprof, dev);
>>> if (err)
>>> diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
>>> index d88860dd028b..3d77f7454953 100644
>>> --- a/drivers/platform/x86/asus-wmi.c
>>> +++ b/drivers/platform/x86/asus-wmi.c
>>> @@ -3852,7 +3852,17 @@ static int asus_wmi_platform_profile_set(struct device *dev,
>>> return throttle_thermal_policy_write(asus);
>>> }
>>> +static int asus_wmi_platform_profile_probe(void *drvdata, unsigned long *choices)
>>> +{
>>> + set_bit(PLATFORM_PROFILE_QUIET, choices);
>>> + set_bit(PLATFORM_PROFILE_BALANCED, choices);
>>> + set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> static const struct platform_profile_ops asus_wmi_platform_profile_ops = {
>>> + .probe = asus_wmi_platform_profile_probe,
>>> .profile_get = asus_wmi_platform_profile_get,
>>> .profile_set = asus_wmi_platform_profile_set,
>>> };
>>> @@ -3885,12 +3895,6 @@ static int platform_profile_setup(struct asus_wmi *asus)
>>> asus->platform_profile_handler.dev = dev;
>>> asus->platform_profile_handler.ops = &asus_wmi_platform_profile_ops;
>>> - set_bit(PLATFORM_PROFILE_QUIET, asus->platform_profile_handler.choices);
>>> - set_bit(PLATFORM_PROFILE_BALANCED,
>>> - asus->platform_profile_handler.choices);
>>> - set_bit(PLATFORM_PROFILE_PERFORMANCE,
>>> - asus->platform_profile_handler.choices);
>>> -
>>> err = platform_profile_register(&asus->platform_profile_handler, asus);
>>> if (err == -EEXIST) {
>>> pr_warn("%s, a platform_profile handler is already registered\n", __func__);
>>> diff --git a/drivers/platform/x86/dell/alienware-wmi.c b/drivers/platform/x86/dell/alienware-wmi.c
>>> index f7a854d40575..0146d2f93be6 100644
>>> --- a/drivers/platform/x86/dell/alienware-wmi.c
>>> +++ b/drivers/platform/x86/dell/alienware-wmi.c
>>> @@ -1078,12 +1078,7 @@ static int thermal_profile_set(struct device *dev,
>>> return wmax_thermal_control(supported_thermal_profiles[profile]);
>>> }
>>> -static const struct platform_profile_ops awcc_platform_profile_ops = {
>>> - .profile_get = thermal_profile_get,
>>> - .profile_set = thermal_profile_set,
>>> -};
>>> -
>>> -static int create_thermal_profile(struct platform_device *platform_device)
>>> +static int thermal_profile_probe(void *drvdata, unsigned long *choices)
>>> {
>>> enum platform_profile_option profile;
>>> enum wmax_thermal_mode mode;
>>> @@ -1116,19 +1111,30 @@ static int create_thermal_profile(struct platform_device *platform_device)
>>> profile = wmax_mode_to_platform_profile[mode];
>>> supported_thermal_profiles[profile] = out_data;
>>> - set_bit(profile, pp_handler.choices);
>>> + set_bit(profile, choices);
>>> }
>>> - if (bitmap_empty(pp_handler.choices, PLATFORM_PROFILE_LAST))
>>> + if (bitmap_empty(choices, PLATFORM_PROFILE_LAST))
>>> return -ENODEV;
>>> if (quirks->gmode) {
>>> supported_thermal_profiles[PLATFORM_PROFILE_PERFORMANCE] =
>>> WMAX_THERMAL_MODE_GMODE;
>>> - set_bit(PLATFORM_PROFILE_PERFORMANCE, pp_handler.choices);
>>> + set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
>>> }
>>> + return 0;
>>> +}
>>> +
>>> +static const struct platform_profile_ops awcc_platform_profile_ops = {
>>> + .probe = thermal_profile_probe,
>>> + .profile_get = thermal_profile_get,
>>> + .profile_set = thermal_profile_set,
>>> +};
>>> +
>>> +static int create_thermal_profile(struct platform_device *platform_device)
>>> +{
>>> pp_handler.name = "alienware-wmi";
>>> pp_handler.dev = &platform_device->dev;
>>> pp_handler.ops = &awcc_platform_profile_ops;
>>> diff --git a/drivers/platform/x86/dell/dell-pc.c b/drivers/platform/x86/dell/dell-pc.c
>>> index 9010a231f209..32b3be0723f8 100644
>>> --- a/drivers/platform/x86/dell/dell-pc.c
>>> +++ b/drivers/platform/x86/dell/dell-pc.c
>>> @@ -24,6 +24,7 @@
>>> #include "dell-smbios.h"
>>> static struct platform_device *platform_device;
>>> +static int supported_modes;
>>> static const struct dmi_system_id dell_device_table[] __initconst = {
>>> {
>>> @@ -231,7 +232,22 @@ static int thermal_platform_profile_get(struct device *dev,
>>> return 0;
>>> }
>>> +static int thermal_platform_profile_probe(void *drvdata, unsigned long *choices)
>>> +{
>>> + if (supported_modes & DELL_QUIET)
>>> + set_bit(PLATFORM_PROFILE_QUIET, choices);
>>> + if (supported_modes & DELL_COOL_BOTTOM)
>>> + set_bit(PLATFORM_PROFILE_COOL, choices);
>>> + if (supported_modes & DELL_BALANCED)
>>> + set_bit(PLATFORM_PROFILE_BALANCED, choices);
>>> + if (supported_modes & DELL_PERFORMANCE)
>>> + set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> static const struct platform_profile_ops dell_pc_platform_profile_ops = {
>>> + .probe = thermal_platform_profile_probe,
>>> .profile_get = thermal_platform_profile_get,
>>> .profile_set = thermal_platform_profile_set,
>>> };
>>> @@ -239,7 +255,6 @@ static const struct platform_profile_ops dell_pc_platform_profile_ops = {
>>> static int thermal_init(void)
>>> {
>>> int ret;
>>> - int supported_modes;
>>> /* If thermal commands are not supported, exit without error */
>>> if (!dell_smbios_class_is_supported(CLASS_INFO))
>>> @@ -265,15 +280,6 @@ static int thermal_init(void)
>>> thermal_handler->dev = &platform_device->dev;
>>> thermal_handler->ops = &dell_pc_platform_profile_ops;
>>> - if (supported_modes & DELL_QUIET)
>>> - set_bit(PLATFORM_PROFILE_QUIET, thermal_handler->choices);
>>> - if (supported_modes & DELL_COOL_BOTTOM)
>>> - set_bit(PLATFORM_PROFILE_COOL, thermal_handler->choices);
>>> - if (supported_modes & DELL_BALANCED)
>>> - set_bit(PLATFORM_PROFILE_BALANCED, thermal_handler->choices);
>>> - if (supported_modes & DELL_PERFORMANCE)
>>> - set_bit(PLATFORM_PROFILE_PERFORMANCE, thermal_handler->choices);
>>> -
>>> /* Clean up if failed */
>>> ret = platform_profile_register(thermal_handler, NULL);
>>> if (ret)
>>> diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c
>>> index 60328b35be74..75bcd8460e7c 100644
>>> --- a/drivers/platform/x86/hp/hp-wmi.c
>>> +++ b/drivers/platform/x86/hp/hp-wmi.c
>>> @@ -1488,6 +1488,23 @@ static int platform_profile_victus_set(struct device *dev,
>>> return 0;
>>> }
>>> +static int hp_wmi_platform_profile_probe(void *drvdata, unsigned long *choices)
>>> +{
>>> + if (is_omen_thermal_profile()) {
>>> + set_bit(PLATFORM_PROFILE_COOL, choices);
>>> + } else if (is_victus_thermal_profile()) {
>>> + set_bit(PLATFORM_PROFILE_QUIET, choices);
>>> + } else {
>>> + set_bit(PLATFORM_PROFILE_QUIET, choices);
>>> + set_bit(PLATFORM_PROFILE_COOL, choices);
>>> + }
>>> +
>>> + set_bit(PLATFORM_PROFILE_BALANCED, choices);
>>> + set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> static int omen_powersource_event(struct notifier_block *nb,
>>> unsigned long value,
>>> void *data)
>>> @@ -1566,16 +1583,19 @@ static inline void omen_unregister_powersource_event_handler(void)
>>> }
>>> static const struct platform_profile_ops platform_profile_omen_ops = {
>>> + .probe = hp_wmi_platform_profile_probe,
>>> .profile_get = platform_profile_omen_get,
>>> .profile_set = platform_profile_omen_set,
>>> };
>>> static const struct platform_profile_ops platform_profile_victus_ops = {
>>> + .probe = hp_wmi_platform_profile_probe,
>>> .profile_get = platform_profile_victus_get,
>>> .profile_set = platform_profile_victus_set,
>>> };
>>> static const struct platform_profile_ops hp_wmi_platform_profile_ops = {
>>> + .probe = hp_wmi_platform_profile_probe,
>>> .profile_get = hp_wmi_platform_profile_get,
>>> .profile_set = hp_wmi_platform_profile_set,
>>> };
>>> @@ -1598,8 +1618,6 @@ static int thermal_profile_setup(struct platform_device *device)
>>> return err;
>>> platform_profile_handler.ops = &platform_profile_omen_ops;
>>> -
>>> - set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
>>> } else if (is_victus_thermal_profile()) {
>>> err = platform_profile_victus_get_ec(&active_platform_profile);
>>> if (err < 0)
>>> @@ -1614,8 +1632,6 @@ static int thermal_profile_setup(struct platform_device *device)
>>> return err;
>>> platform_profile_handler.ops = &platform_profile_victus_ops;
>>> -
>>> - set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
>>> } else {
>>> tp = thermal_profile_get();
>>> @@ -1631,15 +1647,10 @@ static int thermal_profile_setup(struct platform_device *device)
>>> return err;
>>> platform_profile_handler.ops = &hp_wmi_platform_profile_ops;
>>> -
>>> - set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
>>> - set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
>>> }
>>> platform_profile_handler.name = "hp-wmi";
>>> platform_profile_handler.dev = &device->dev;
>>> - set_bit(PLATFORM_PROFILE_BALANCED, platform_profile_handler.choices);
>>> - set_bit(PLATFORM_PROFILE_PERFORMANCE, platform_profile_handler.choices);
>>> err = platform_profile_register(&platform_profile_handler, NULL);
>>> if (err)
>>> diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
>>> index 96e99513b0b5..050919a28d2b 100644
>>> --- a/drivers/platform/x86/ideapad-laptop.c
>>> +++ b/drivers/platform/x86/ideapad-laptop.c
>>> @@ -1023,6 +1023,15 @@ static int dytc_profile_set(struct device *dev,
>>> return -EINTR;
>>> }
>>> +static int dytc_profile_probe(void *drvdata, unsigned long *choices)
>>> +{
>>> + set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
>>> + set_bit(PLATFORM_PROFILE_BALANCED, choices);
>>> + set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> static void dytc_profile_refresh(struct ideapad_private *priv)
>>> {
>>> enum platform_profile_option profile;
>>> @@ -1064,6 +1073,7 @@ static const struct dmi_system_id ideapad_dytc_v4_allow_table[] = {
>>> };
>>> static const struct platform_profile_ops dytc_profile_ops = {
>>> + .probe = dytc_profile_probe,
>>> .profile_get = dytc_profile_get,
>>> .profile_set = dytc_profile_set,
>>> };
>>> @@ -1112,11 +1122,6 @@ static int ideapad_dytc_profile_init(struct ideapad_private *priv)
>>> priv->dytc->priv = priv;
>>> priv->dytc->pprof.ops = &dytc_profile_ops;
>>> - /* Setup supported modes */
>>> - set_bit(PLATFORM_PROFILE_LOW_POWER, priv->dytc->pprof.choices);
>>> - set_bit(PLATFORM_PROFILE_BALANCED, priv->dytc->pprof.choices);
>>> - set_bit(PLATFORM_PROFILE_PERFORMANCE, priv->dytc->pprof.choices);
>>> -
>>> /* Create platform_profile structure and register */
>>> err = platform_profile_register(&priv->dytc->pprof, &priv->dytc);
>>> if (err)
>>> diff --git a/drivers/platform/x86/inspur_platform_profile.c b/drivers/platform/x86/inspur_platform_profile.c
>>> index d0a8e4eebffa..06df3aae9a56 100644
>>> --- a/drivers/platform/x86/inspur_platform_profile.c
>>> +++ b/drivers/platform/x86/inspur_platform_profile.c
>>> @@ -164,7 +164,17 @@ static int inspur_platform_profile_get(struct device *dev,
>>> return 0;
>>> }
>>> +static int inspur_platform_profile_probe(void *drvdata, unsigned long *choices)
>>> +{
>>> + set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
>>> + set_bit(PLATFORM_PROFILE_BALANCED, choices);
>>> + set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> static const struct platform_profile_ops inspur_platform_profile_ops = {
>>> + .probe = inspur_platform_profile_probe,
>>> .profile_get = inspur_platform_profile_get,
>>> .profile_set = inspur_platform_profile_set,
>>> };
>>> @@ -184,10 +194,6 @@ static int inspur_wmi_probe(struct wmi_device *wdev, const void *context)
>>> priv->handler.dev = &wdev->dev;
>>> priv->handler.ops = &inspur_platform_profile_ops;
>>> - set_bit(PLATFORM_PROFILE_LOW_POWER, priv->handler.choices);
>>> - set_bit(PLATFORM_PROFILE_BALANCED, priv->handler.choices);
>>> - set_bit(PLATFORM_PROFILE_PERFORMANCE, priv->handler.choices);
>>> -
>>> return platform_profile_register(&priv->handler, priv);
>>> }
>>> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
>>> index 9978fd36a3d1..5c250867678f 100644
>>> --- a/drivers/platform/x86/thinkpad_acpi.c
>>> +++ b/drivers/platform/x86/thinkpad_acpi.c
>>> @@ -10538,7 +10538,17 @@ static int dytc_profile_set(struct device *dev,
>>> return err;
>>> }
>>> +static int dytc_profile_probe(void *drvdata, unsigned long *choices)
>>> +{
>>> + set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
>>> + set_bit(PLATFORM_PROFILE_BALANCED, choices);
>>> + set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
>>> +
>>> + return 0;
>>> +}
>>> +
>>> static const struct platform_profile_ops dytc_profile_ops = {
>>> + .probe = dytc_profile_probe,
>>> .profile_get = dytc_profile_get,
>>> .profile_set = dytc_profile_set,
>>> };
>>> @@ -10584,11 +10594,6 @@ static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
>>> {
>>> int err, output;
>>> - /* Setup supported modes */
>>> - set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices);
>>> - set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices);
>>> - set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices);
>>> -
>>> err = dytc_command(DYTC_CMD_QUERY, &output);
>>> if (err)
>>> return err;
>>> diff --git a/include/linux/platform_profile.h b/include/linux/platform_profile.h
>>> index 6013c05d7b86..5ad1ab7b75e4 100644
>>> --- a/include/linux/platform_profile.h
>>> +++ b/include/linux/platform_profile.h
>>> @@ -31,6 +31,7 @@ enum platform_profile_option {
>>> struct platform_profile_handler;
>>> struct platform_profile_ops {
>>> + int (*probe)(void *drvdata, unsigned long *choices);
>>> int (*profile_get)(struct device *dev, enum platform_profile_option *profile);
>>> int (*profile_set)(struct device *dev, enum platform_profile_option profile);
>>> };
>>