linux-kernel - Re: [PATCH v2 2/3] platform/x86: acer-wmi: use an ACPI bitmap to set the platform profile choices

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Message-ID: <33ef8a61-f8ff-4e74-91dd-3781447f643b@gmx.de>
Date: Sun, 5 Jan 2025 14:06:18 +0100
From: Armin Wolf <W_Armin@....de>
To: Kurt Borja <kuurtb@...il.com>, Hridesh MG <hridesh699@...il.com>
Cc: Hans de Goede <hdegoede@...hat.com>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
 platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
 Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v2 2/3] platform/x86: acer-wmi: use an ACPI bitmap to set
 the platform profile choices

Am 04.01.25 um 18:18 schrieb Kurt Borja:

> On Sat, Jan 04, 2025 at 08:59:21PM +0530, Hridesh MG wrote:
>> Currently the choices for the platform profile are hardcoded. There is
>> an ACPI bitmap accessible via WMI that specifies the supported profiles,
>> use this bitmap to dynamically set the choices for the platform profile.
>>
>> Link: https://lore.kernel.org/platform-driver-x86/ecb60ee5-3df7-4d7e-8ebf-8c162b339ade@gmx.de/
>> Signed-off-by: Hridesh MG <hridesh699@...il.com>
>> ---
>>   drivers/platform/x86/acer-wmi.c | 36 ++++++++++++++++++++++++++----------
>>   1 file changed, 26 insertions(+), 10 deletions(-)
>>
>> diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
>> index 5370056fb2d03a768162f2f1643ef27dc6deafa8..f6c47deb4c452fc193f22c479c730aecb1e69e44 100644
>> --- a/drivers/platform/x86/acer-wmi.c
>> +++ b/drivers/platform/x86/acer-wmi.c
>> @@ -33,6 +33,7 @@
>>   #include <linux/units.h>
>>   #include <linux/unaligned.h>
>>   #include <linux/bitfield.h>
>> +#include <linux/bitops.h>
>>
>>   MODULE_AUTHOR("Carlos Corbacho");
>>   MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
>> @@ -1983,6 +1984,7 @@ acer_predator_v4_platform_profile_set(struct platform_profile_handler *pprof,
>>   static int acer_platform_profile_setup(struct platform_device *device)
>>   {
>>   	if (quirks->predator_v4) {
>> +		unsigned long supported_profiles;
>>   		int err;
>>
>>   		platform_profile_handler.name = "acer-wmi";
>> @@ -1992,16 +1994,30 @@ static int acer_platform_profile_setup(struct platform_device *device)
>>   		platform_profile_handler.profile_set =
>>   			acer_predator_v4_platform_profile_set;
>>
>> -		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 = WMID_gaming_get_misc_setting(ACER_WMID_MISC_SETTING_SUPPORTED_PROFILES,
>> +						   (u8 *)&supported_profiles);
>> +		if (err)
>> +			return err;
>> +
>> +		if (test_bit(ACER_PREDATOR_V4_THERMAL_PROFILE_QUIET, &supported_profiles))
>> +			set_bit(PLATFORM_PROFILE_QUIET,
>> +				platform_profile_handler.choices);
>> +
>> +		if (test_bit(ACER_PREDATOR_V4_THERMAL_PROFILE_BALANCED, &supported_profiles))
>> +			set_bit(PLATFORM_PROFILE_BALANCED,
>> +				platform_profile_handler.choices);
>> +
>> +		if (test_bit(ACER_PREDATOR_V4_THERMAL_PROFILE_PERFORMANCE, &supported_profiles))
>> +			set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE,
>> +				platform_profile_handler.choices);
>> +
>> +		if (test_bit(ACER_PREDATOR_V4_THERMAL_PROFILE_TURBO, &supported_profiles))
>> +			set_bit(PLATFORM_PROFILE_PERFORMANCE,
>> +				platform_profile_handler.choices);
>> +
>> +		if (test_bit(ACER_PREDATOR_V4_THERMAL_PROFILE_ECO, &supported_profiles))
>> +			set_bit(PLATFORM_PROFILE_LOW_POWER,
>> +				platform_profile_handler.choices);
> As Armin mentioned, with this approach you may still select unsupported
> profiles in acer_thermal_profile_change(). You should either handle that
> in this patch or move this patch to the end of the series.
>
> ~ Kurt

Correct.

I suggest that you simply reorder the patches so that this patch comes after the platform_profile_cycle() patch.

Thanks,
Armin Wolf

>>
>>
>>   		err = platform_profile_register(&platform_profile_handler);