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Message-ID: <wuezi3qo55vgjdeg2f5hdgoh4kwhzvz6w4rmd2bv2fiikn4ytt@vy3ay7l7rw5g>
Date: Mon, 14 Oct 2024 23:22:50 -0300
From: Kurt Borja <kuurtb@...il.com>
To: Armin Wolf <W_Armin@....de>
Cc: hdegoede@...hat.com, ilpo.jarvinen@...ux.intel.com,
linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH v5 3/4] alienware-wmi: added platform profile support
On Mon, Oct 14, 2024 at 06:40:49PM +0200, Armin Wolf wrote:
> Am 12.10.24 um 04:02 schrieb Kurt Borja:
>
> > Implements platform profile support for Dell laptops with new WMAX
> > thermal interface, present on some Alienware X-Series, Alienware
> > M-Series and Dell's G-Series laptops. This implementation supports two
> > sets of thermal profile codes, namely *thermal* and *thermal_ustt*, plus
> > additional quirk *gmode* for Dell's G-Series laptops.
> >
> > Signed-off-by: Kurt Borja <kuurtb@...il.com>
> > ---
> > drivers/platform/x86/dell/Kconfig | 1 +
> > drivers/platform/x86/dell/alienware-wmi.c | 236 ++++++++++++++++++++++
> > 2 files changed, 237 insertions(+)
> >
> > diff --git a/drivers/platform/x86/dell/Kconfig b/drivers/platform/x86/dell/Kconfig
> > index 68a49788a..b06d634cd 100644
> > --- a/drivers/platform/x86/dell/Kconfig
> > +++ b/drivers/platform/x86/dell/Kconfig
> > @@ -21,6 +21,7 @@ config ALIENWARE_WMI
> > depends on LEDS_CLASS
> > depends on NEW_LEDS
> > depends on ACPI_WMI
> > + select ACPI_PLATFORM_PROFILE
> > help
> > This is a driver for controlling Alienware BIOS driven
> > features. It exposes an interface for controlling the AlienFX
> > diff --git a/drivers/platform/x86/dell/alienware-wmi.c b/drivers/platform/x86/dell/alienware-wmi.c
> > index b27f3b64c..6e30e9376 100644
> > --- a/drivers/platform/x86/dell/alienware-wmi.c
> > +++ b/drivers/platform/x86/dell/alienware-wmi.c
> > @@ -8,8 +8,11 @@
> > #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> >
> > #include <linux/acpi.h>
> > +#include <linux/bitfield.h>
> > +#include <linux/bits.h>
> > #include <linux/module.h>
> > #include <linux/platform_device.h>
> > +#include <linux/platform_profile.h>
> > #include <linux/dmi.h>
> > #include <linux/leds.h>
> >
> > @@ -25,6 +28,12 @@
> > #define WMAX_METHOD_AMPLIFIER_CABLE 0x6
> > #define WMAX_METHOD_DEEP_SLEEP_CONTROL 0x0B
> > #define WMAX_METHOD_DEEP_SLEEP_STATUS 0x0C
> > +#define WMAX_METHOD_THERMAL_INFORMATION 0x14
> > +#define WMAX_METHOD_THERMAL_CONTROL 0x15
> > +
> > +#define WMAX_ARG_GET_CURRENT_PROF 0x0B
> > +
> > +#define WMAX_FAILURE_CODE 0xFFFFFFFF
> >
> > MODULE_AUTHOR("Mario Limonciello <mario.limonciello@...look.com>");
> > MODULE_DESCRIPTION("Alienware special feature control");
> > @@ -49,11 +58,27 @@ enum WMAX_CONTROL_STATES {
> > WMAX_SUSPEND = 3,
> > };
> >
> > +enum WMAX_THERMAL_PROFILE {
> > + WMAX_THERMAL_QUIET = 0x96,
> > + WMAX_THERMAL_BALANCED = 0x97,
> > + WMAX_THERMAL_BALANCED_PERFORMANCE = 0x98,
> > + WMAX_THERMAL_PERFORMANCE = 0x99,
> > + WMAX_THERMAL_USTT_LOW_POWER = 0xA5,
> > + WMAX_THERMAL_USTT_QUIET = 0xA3,
> > + WMAX_THERMAL_USTT_BALANCED = 0xA0,
> > + WMAX_THERMAL_USTT_BALANCED_PERFORMANCE = 0xA1,
> > + WMAX_THERMAL_USTT_PERFORMANCE = 0xA4,
> > + WMAX_THERMAL_GMODE = 0xAB,
> > +};
> > +
> > struct quirk_entry {
> > u8 num_zones;
> > u8 hdmi_mux;
> > u8 amplifier;
> > u8 deepslp;
> > + u8 thermal;
> > + u8 thermal_ustt;
> > + u8 gmode;
> > };
> >
> > static struct quirk_entry *quirks;
> > @@ -64,6 +89,9 @@ static struct quirk_entry quirk_inspiron5675 = {
> > .hdmi_mux = 0,
> > .amplifier = 0,
> > .deepslp = 0,
> > + .thermal = 0,
> > + .thermal_ustt = 0,
> > + .gmode = 0,
> > };
> >
> > static struct quirk_entry quirk_unknown = {
> > @@ -71,6 +99,9 @@ static struct quirk_entry quirk_unknown = {
> > .hdmi_mux = 0,
> > .amplifier = 0,
> > .deepslp = 0,
> > + .thermal = 0,
> > + .thermal_ustt = 0,
> > + .gmode = 0,
> > };
> >
> > static struct quirk_entry quirk_x51_r1_r2 = {
> > @@ -78,6 +109,9 @@ static struct quirk_entry quirk_x51_r1_r2 = {
> > .hdmi_mux = 0,
> > .amplifier = 0,
> > .deepslp = 0,
> > + .thermal = 0,
> > + .thermal_ustt = 0,
> > + .gmode = 0,
> > };
> >
> > static struct quirk_entry quirk_x51_r3 = {
> > @@ -85,6 +119,9 @@ static struct quirk_entry quirk_x51_r3 = {
> > .hdmi_mux = 0,
> > .amplifier = 1,
> > .deepslp = 0,
> > + .thermal = 0,
> > + .thermal_ustt = 0,
> > + .gmode = 0,
> > };
> >
> > static struct quirk_entry quirk_asm100 = {
> > @@ -92,6 +129,9 @@ static struct quirk_entry quirk_asm100 = {
> > .hdmi_mux = 1,
> > .amplifier = 0,
> > .deepslp = 0,
> > + .thermal = 0,
> > + .thermal_ustt = 0,
> > + .gmode = 0,
> > };
> >
> > static struct quirk_entry quirk_asm200 = {
> > @@ -99,6 +139,9 @@ static struct quirk_entry quirk_asm200 = {
> > .hdmi_mux = 1,
> > .amplifier = 0,
> > .deepslp = 1,
> > + .thermal = 0,
> > + .thermal_ustt = 0,
> > + .gmode = 0,
> > };
> >
> > static struct quirk_entry quirk_asm201 = {
> > @@ -106,6 +149,19 @@ static struct quirk_entry quirk_asm201 = {
> > .hdmi_mux = 1,
> > .amplifier = 1,
> > .deepslp = 1,
> > + .thermal = 0,
> > + .thermal_ustt = 0,
> > + .gmode = 0,
> > +};
> > +
> > +static struct quirk_entry quirk_x15_r1 = {
> > + .num_zones = 2,
> > + .hdmi_mux = 0,
> > + .amplifier = 0,
> > + .deepslp = 0,
> > + .thermal = 0,
> > + .thermal_ustt = 1,
> > + .gmode = 0,
> > };
> >
> > static int __init dmi_matched(const struct dmi_system_id *dmi)
> > @@ -169,6 +225,15 @@ static const struct dmi_system_id alienware_quirks[] __initconst = {
> > },
> > .driver_data = &quirk_asm201,
> > },
> > + {
> > + .callback = dmi_matched,
> > + .ident = "Alienware x15 R1",
> > + .matches = {
> > + DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
> > + DMI_MATCH(DMI_PRODUCT_NAME, "Alienware x15 R1")
> > + },
> > + .driver_data = &quirk_x15_r1,
> > + },
> > {
> > .callback = dmi_matched,
> > .ident = "Dell Inc. Inspiron 5675",
> > @@ -218,6 +283,7 @@ static struct platform_device *platform_device;
> > static struct device_attribute *zone_dev_attrs;
> > static struct attribute **zone_attrs;
> > static struct platform_zone *zone_data;
> > +static struct platform_profile_handler pp_handler;
> >
> > static struct platform_driver platform_driver = {
> > .driver = {
> > @@ -761,6 +827,168 @@ static int create_deepsleep(struct platform_device *dev)
> > return ret;
> > }
> >
> > +/*
> > + * Thermal Profile control
> > + * - Provides thermal profile control through the Platform Profile API
> > + */
> > +#define WMAX_PROFILE_MASK GENMASK(15, 8)
> > +#define WMAX_PROFILE_ACTIVATE BIT(0)
> > +
> > +static u32 profile_to_wmax_arg(enum WMAX_THERMAL_PROFILE prof)
> > +{
> > + return FIELD_PREP(WMAX_PROFILE_MASK, prof) | WMAX_PROFILE_ACTIVATE;
> > +}
> > +
> > +static int thermal_profile_get(struct platform_profile_handler *pprof,
> > + enum platform_profile_option *profile)
>
> Alignment should match open parenthesis.
I will fix it.
>
> > +{
> > + acpi_status status;
> > + u32 in_args = WMAX_ARG_GET_CURRENT_PROF;
> > + u32 out_data;
> > +
> > + status = alienware_wmax_command(&in_args, sizeof(in_args),
> > + WMAX_METHOD_THERMAL_INFORMATION, &out_data);
> > +
> > + if (ACPI_FAILURE(status))
> > + return -EIO;
> > +
> > + if (out_data == WMAX_FAILURE_CODE)
> > + return -EBADRQC;
> > +
> > + switch (out_data) {
> > + case WMAX_THERMAL_USTT_LOW_POWER:
> > + *profile = PLATFORM_PROFILE_LOW_POWER;
> > + break;
> > + case WMAX_THERMAL_QUIET:
> > + case WMAX_THERMAL_USTT_QUIET:
> > + *profile = PLATFORM_PROFILE_QUIET;
> > + break;
> > + case WMAX_THERMAL_BALANCED:
> > + case WMAX_THERMAL_USTT_BALANCED:
> > + *profile = PLATFORM_PROFILE_BALANCED;
> > + break;
> > + case WMAX_THERMAL_BALANCED_PERFORMANCE:
> > + case WMAX_THERMAL_USTT_BALANCED_PERFORMANCE:
> > + *profile = PLATFORM_PROFILE_BALANCED_PERFORMANCE;
> > + break;
> > + case WMAX_THERMAL_GMODE:
> > + case WMAX_THERMAL_PERFORMANCE:
> > + case WMAX_THERMAL_USTT_PERFORMANCE:
> > + *profile = PLATFORM_PROFILE_PERFORMANCE;
> > + break;
> > + default:
> > + return -ENODATA;
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static int thermal_profile_set(struct platform_profile_handler *pprof,
> > + enum platform_profile_option profile)
> > +{
>
> Alignment should match open parenthesis.
>
> > + acpi_status status;
> > + u32 in_args;
> > + u32 out_data;
> > +
> > + switch (profile) {
> > + case PLATFORM_PROFILE_QUIET:
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_QUIET);
> > + break;
> > + case PLATFORM_PROFILE_BALANCED:
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_BALANCED);
> > + break;
> > + case PLATFORM_PROFILE_BALANCED_PERFORMANCE:
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_BALANCED_PERFORMANCE);
> > + break;
> > + case PLATFORM_PROFILE_PERFORMANCE:
> > + if (quirks->gmode > 0)
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_GMODE);
> > + else
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_PERFORMANCE);
> > + break;
> > + default:
> > + return -EOPNOTSUPP;
> > + }
> > +
> > + status = alienware_wmax_command(&in_args, sizeof(in_args),
> > + WMAX_METHOD_THERMAL_CONTROL, &out_data);
> > +
> > + if (ACPI_FAILURE(status))
> > + return -EIO;
> > +
> > + if (out_data == WMAX_FAILURE_CODE)
> > + return -EBADRQC;
> > +
> > + return 0;
> > +}
> > +
> > +static int thermal_profile_set_ustt(struct platform_profile_handler *pprof,
> > + enum platform_profile_option profile)
> > +{
> > + acpi_status status;
> > + u32 in_args;
> > + u32 out_data;
> > +
> > + switch (profile) {
> > + case PLATFORM_PROFILE_LOW_POWER:
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_USTT_LOW_POWER);
> > + break;
> > + case PLATFORM_PROFILE_QUIET:
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_USTT_QUIET);
> > + break;
> > + case PLATFORM_PROFILE_BALANCED:
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_USTT_BALANCED);
> > + break;
> > + case PLATFORM_PROFILE_BALANCED_PERFORMANCE:
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_USTT_BALANCED_PERFORMANCE);
> > + break;
> > + case PLATFORM_PROFILE_PERFORMANCE:
> > + if (quirks->gmode > 0)
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_GMODE);
> > + else
> > + in_args = profile_to_wmax_arg(WMAX_THERMAL_USTT_PERFORMANCE);
> > + break;
> > + default:
> > + return -EOPNOTSUPP;
> > + }
> > +
> > + status = alienware_wmax_command(&in_args, sizeof(in_args),
> > + WMAX_METHOD_THERMAL_CONTROL, &out_data);
> > +
> > + if (ACPI_FAILURE(status))
> > + return -EIO;
> > +
> > + if (out_data == WMAX_FAILURE_CODE)
> > + return -EBADRQC;
> > +
> > + return 0;
> > +}
> > +
> > +static int create_thermal_profile(void)
> > +{
> > + pp_handler.profile_get = thermal_profile_get;
> > +
> > + if (quirks->thermal > 0)
> > + pp_handler.profile_set = thermal_profile_set;
>
> Braces {} should be used on all arms of this statement.
Ok.
>
> > + else {
> > + pp_handler.profile_set = thermal_profile_set_ustt;
> > + set_bit(PLATFORM_PROFILE_LOW_POWER, pp_handler.choices);
> > + }
> > +
> > + set_bit(PLATFORM_PROFILE_QUIET, pp_handler.choices);
> > + set_bit(PLATFORM_PROFILE_BALANCED, pp_handler.choices);
> > + set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, pp_handler.choices);
> > + set_bit(PLATFORM_PROFILE_PERFORMANCE, pp_handler.choices);
> > +
> > + return platform_profile_register(&pp_handler);
> > +}
> > +
> > +static void remove_thermal_profile(void)
> > +{
> > + if (quirks->thermal > 0)
> > + platform_profile_remove();
>
> platform_profile_remove() should also be called when quirks->thermal_ustt is set.
Thank you for catching it.
>
> > +}
> > +
> > static int __init alienware_wmi_init(void)
> > {
> > int ret;
> > @@ -808,6 +1036,12 @@ static int __init alienware_wmi_init(void)
> > goto fail_prep_deepsleep;
> > }
> >
> > + if (quirks->thermal > 0 || quirks->thermal_ustt > 0) {
> > + ret = create_thermal_profile();
> > + if (ret)
> > + goto fail_prep_thermal_profile;
> > + }
> > +
> > ret = alienware_zone_init(platform_device);
> > if (ret)
> > goto fail_prep_zones;
> > @@ -818,6 +1052,7 @@ static int __init alienware_wmi_init(void)
> > alienware_zone_exit(platform_device);
> > fail_prep_deepsleep:
> > fail_prep_amplifier:
> > +fail_prep_thermal_profile:
>
> fail_prep_thermal_profile should come before fail_prep_deepsleep for proper rollback in case of an error.
> Also fail_prep_zones should call remove_thermal_profile().
Ok.
>
> > fail_prep_hdmi:
> > platform_device_del(platform_device);
> > fail_platform_device2:
> > @@ -835,6 +1070,7 @@ static void __exit alienware_wmi_exit(void)
> > if (platform_device) {
> > alienware_zone_exit(platform_device);
> > remove_hdmi(platform_device);
> > + remove_thermal_profile();
>
> Please move remove_thermal_profile() above remove_hdmi().
Ok.
>
> Otherwise, the patch look good.
>
> Thanks,
> Armin Wolf
>
Thank you.
Kurt
> > platform_device_unregister(platform_device);
> > platform_driver_unregister(&platform_driver);
> > }
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