Message-Id: <9daef2c6-6df4-4f61-966c-239450de7b4e@app.fastmail.com>
Date: Tue, 11 Jun 2024 17:31:46 +1200
From: "Luke Jones" <luke@...nes.dev>
To: "Mohamed Ghanmi" <mohamed.ghanmi@...com.tn>,
 "Hans de Goede" <hdegoede@...hat.com>
Cc: corentin.chary@...il.com,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
 platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/1] platform/x86: asus-wmi: add support for vivobook fan
 profiles



On Mon, 10 Jun 2024, at 2:48 AM, Mohamed Ghanmi wrote:
> Add support for vivobook fan profiles wmi call on the ASUS VIVOBOOK
> to adjust power limits.
> 
> These fan profiles have a different device id than the ROG series
> and different order. This reorders the existing modes.
> 
> As part of keeping the patch clean the throttle_thermal_policy_available
> boolean stored in the driver struct is removed and
> throttle_thermal_policy_dev is used in place (as on init it is zeroed).
> 
> Signed-off-by: Mohamed Ghanmi <mohamed.ghanmi@...com.tn>
> Co-developed-by: Luke D. Jones <luke@...nes.dev>
> Signed-off-by: Luke D. Jones <luke@...nes.dev>
> ---
> drivers/platform/x86/asus-wmi.c            | 125 ++++++++++++---------
> include/linux/platform_data/x86/asus-wmi.h |   1 +
> 2 files changed, 76 insertions(+), 50 deletions(-)
> 
> diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
> index 3c61d75a3..2e3d8d8fb 100644
> --- a/drivers/platform/x86/asus-wmi.c
> +++ b/drivers/platform/x86/asus-wmi.c
> @@ -97,6 +97,12 @@ module_param(fnlock_default, bool, 0444);
> #define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1
> #define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2
>  
> +#define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT_VIVO 0
> +#define ASUS_THROTTLE_THERMAL_POLICY_SILENT_VIVO 1
> +#define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST_VIVO 2
> +
> +#define PLATFORM_PROFILE_MAX 2
> +
> #define USB_INTEL_XUSB2PR 0xD0
> #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
>  
> @@ -293,8 +299,8 @@ struct asus_wmi {
> u32 kbd_rgb_dev;
> bool kbd_rgb_state_available;
>  
> - bool throttle_thermal_policy_available;
> u8 throttle_thermal_policy_mode;
> + u32 throttle_thermal_policy_dev;
>  
> bool cpu_fan_curve_available;
> bool gpu_fan_curve_available;
> @@ -3152,7 +3158,7 @@ static int fan_curve_get_factory_default(struct asus_wmi *asus, u32 fan_dev)
> int err, fan_idx;
> u8 mode = 0;
>  
> - if (asus->throttle_thermal_policy_available)
> + if (asus->throttle_thermal_policy_dev)
> mode = asus->throttle_thermal_policy_mode;
> /* DEVID_<C/G>PU_FAN_CURVE is switched for OVERBOOST vs SILENT */
> if (mode == 2)
> @@ -3359,7 +3365,7 @@ static ssize_t fan_curve_enable_store(struct device *dev,
> * For machines with throttle this is the only way to reset fans
> * to default mode of operation (does not erase curve data).
> */
> - if (asus->throttle_thermal_policy_available) {
> + if (asus->throttle_thermal_policy_dev) {
> err = throttle_thermal_policy_write(asus);
> if (err)
> return err;
> @@ -3576,8 +3582,8 @@ static const struct attribute_group asus_fan_curve_attr_group = {
> __ATTRIBUTE_GROUPS(asus_fan_curve_attr);
>  
> /*
> - * Must be initialised after throttle_thermal_policy_check_present() as
> - * we check the status of throttle_thermal_policy_available during init.
> + * Must be initialised after throttle_thermal_policy_dev is set as
> + * we check the status of throttle_thermal_policy_dev during init.
>   */
> static int asus_wmi_custom_fan_curve_init(struct asus_wmi *asus)
> {
> @@ -3618,38 +3624,13 @@ static int asus_wmi_custom_fan_curve_init(struct asus_wmi *asus)
> }
>  
> /* Throttle thermal policy ****************************************************/
> -
> -static int throttle_thermal_policy_check_present(struct asus_wmi *asus)
> -{
> - u32 result;
> - int err;
> -
> - asus->throttle_thermal_policy_available = false;
> -
> - err = asus_wmi_get_devstate(asus,
> -     ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
> -     &result);
> - if (err) {
> - if (err == -ENODEV)
> - return 0;
> - return err;
> - }
> -
> - if (result & ASUS_WMI_DSTS_PRESENCE_BIT)
> - asus->throttle_thermal_policy_available = true;
> -
> - return 0;
> -}
> -
> static int throttle_thermal_policy_write(struct asus_wmi *asus)
> {
> - int err;
> - u8 value;
> + u8 value = asus->throttle_thermal_policy_mode;
> u32 retval;
> + int err;
>  
> - value = asus->throttle_thermal_policy_mode;
> -
> - err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
> + err = asus_wmi_set_devstate(asus->throttle_thermal_policy_dev,
>     value, &retval);
>  
> sysfs_notify(&asus->platform_device->dev.kobj, NULL,
> @@ -3679,7 +3660,7 @@ static int throttle_thermal_policy_write(struct asus_wmi *asus)
>  
> static int throttle_thermal_policy_set_default(struct asus_wmi *asus)
> {
> - if (!asus->throttle_thermal_policy_available)
> + if (!asus->throttle_thermal_policy_dev)
> return 0;
>  
> asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
> @@ -3691,7 +3672,7 @@ static int throttle_thermal_policy_switch_next(struct asus_wmi *asus)
> u8 new_mode = asus->throttle_thermal_policy_mode + 1;
> int err;
>  
> - if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
> + if (new_mode > PLATFORM_PROFILE_MAX)
> new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
>  
> asus->throttle_thermal_policy_mode = new_mode;
> @@ -3730,7 +3711,7 @@ static ssize_t throttle_thermal_policy_store(struct device *dev,
> if (result < 0)
> return result;
>  
> - if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
> + if (new_mode > PLATFORM_PROFILE_MAX)
> return -EINVAL;
>  
> asus->throttle_thermal_policy_mode = new_mode;
> @@ -3747,10 +3728,56 @@ static ssize_t throttle_thermal_policy_store(struct device *dev,
> return count;
> }
>  
> -// Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent
> +/*
> + * Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent
> + */
> static DEVICE_ATTR_RW(throttle_thermal_policy);
>  
> /* Platform profile ***********************************************************/
> +static int asus_wmi_platform_profile_to_vivo(struct asus_wmi *asus,
> +   int mode)

Given the internals of this function I'm still not sure if this naming makes sense. Perhaps "maybe_platform_profile_to_vivo()"

> +{
> + bool vivo;
> +
> + vivo = asus->throttle_thermal_policy_dev == ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO;
> +
> + if (vivo) {
> + switch (mode) {
> + case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT:
> + return ASUS_THROTTLE_THERMAL_POLICY_DEFAULT_VIVO;
> + case ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST:
> + return ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST_VIVO;
> + case ASUS_THROTTLE_THERMAL_POLICY_SILENT:
> + return ASUS_THROTTLE_THERMAL_POLICY_SILENT_VIVO;
> + }
> + }
> +
> + return mode;
> +
> +}
> +
> +static int asus_wmi_platform_profile_mode_from_vivo(struct asus_wmi *asus,
> +   int mode)

Same as the last function.

> +{
> + bool vivo;
> +
> + vivo = asus->throttle_thermal_policy_dev == ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO;
> +
> + if (vivo) {
> + switch (mode) {
> + case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT_VIVO:
> + return ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
> + case ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST_VIVO:
> + return ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST;
> + case ASUS_THROTTLE_THERMAL_POLICY_SILENT_VIVO:
> + return ASUS_THROTTLE_THERMAL_POLICY_SILENT;
> + }
> + }
> +
> + return mode;
> +
> +}
> +
> static int asus_wmi_platform_profile_get(struct platform_profile_handler *pprof,
> enum platform_profile_option *profile)
> {
> @@ -3758,10 +3785,9 @@ static int asus_wmi_platform_profile_get(struct platform_profile_handler *pprof,
> int tp;
>  
> asus = container_of(pprof, struct asus_wmi, platform_profile_handler);
> -
> tp = asus->throttle_thermal_policy_mode;
>  
> - switch (tp) {
> + switch (asus_wmi_platform_profile_mode_from_vivo(asus, tp)) {
> case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT:
> *profile = PLATFORM_PROFILE_BALANCED;
> break;
> @@ -3775,6 +3801,7 @@ static int asus_wmi_platform_profile_get(struct platform_profile_handler *pprof,
> return -EINVAL;
> }
>  
> +
> return 0;
> }
>  
> @@ -3800,7 +3827,7 @@ static int asus_wmi_platform_profile_set(struct platform_profile_handler *pprof,
> return -EOPNOTSUPP;
> }
>  
> - asus->throttle_thermal_policy_mode = tp;
> + asus->throttle_thermal_policy_mode = asus_wmi_platform_profile_to_vivo(asus, tp);
> return throttle_thermal_policy_write(asus);
> }
>  
> @@ -3813,7 +3840,7 @@ static int platform_profile_setup(struct asus_wmi *asus)
> * Not an error if a component platform_profile relies on is unavailable
> * so early return, skipping the setup of platform_profile.
> */
> - if (!asus->throttle_thermal_policy_available)
> + if (!asus->throttle_thermal_policy_dev)
> return 0;
>  
> dev_info(dev, "Using throttle_thermal_policy for platform_profile support\n");
> @@ -4228,7 +4255,7 @@ static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
> if (code == NOTIFY_KBD_FBM || code == NOTIFY_KBD_TTP) {
> if (asus->fan_boost_mode_available)
> fan_boost_mode_switch_next(asus);
> - if (asus->throttle_thermal_policy_available)
> + if (asus->throttle_thermal_policy_dev)
> throttle_thermal_policy_switch_next(asus);
> return;
>  
> @@ -4436,7 +4463,7 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
> else if (attr == &dev_attr_fan_boost_mode.attr)
> ok = asus->fan_boost_mode_available;
> else if (attr == &dev_attr_throttle_thermal_policy.attr)
> - ok = asus->throttle_thermal_policy_available;
> + ok = asus->throttle_thermal_policy_dev != 0;
> else if (attr == &dev_attr_ppt_pl2_sppt.attr)
> devid = ASUS_WMI_DEVID_PPT_PL2_SPPT;
> else if (attr == &dev_attr_ppt_pl1_spl.attr)
> @@ -4745,16 +4772,15 @@ static int asus_wmi_add(struct platform_device *pdev)
> else if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_TUF_RGB_MODE2))
> asus->kbd_rgb_dev = ASUS_WMI_DEVID_TUF_RGB_MODE2;
>  
> + if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY))
> + asus->throttle_thermal_policy_dev = ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY;
> + else if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO))
> + asus->throttle_thermal_policy_dev = ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO;
> +
> err = fan_boost_mode_check_present(asus);
> if (err)
> goto fail_fan_boost_mode;
>  
> - err = throttle_thermal_policy_check_present(asus);
> - if (err)
> - goto fail_throttle_thermal_policy;
> - else
> - throttle_thermal_policy_set_default(asus);
> -
> err = platform_profile_setup(asus);
> if (err)
> goto fail_platform_profile_setup;
> @@ -4849,7 +4875,6 @@ static int asus_wmi_add(struct platform_device *pdev)
> fail_input:
> asus_wmi_sysfs_exit(asus->platform_device);
> fail_sysfs:
> -fail_throttle_thermal_policy:
> fail_custom_fan_curve:
> fail_platform_profile_setup:
> if (asus->platform_profile_support)
> diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
> index 3eb5cd677..982a63774 100644
> --- a/include/linux/platform_data/x86/asus-wmi.h
> +++ b/include/linux/platform_data/x86/asus-wmi.h
> @@ -64,6 +64,7 @@
> #define ASUS_WMI_DEVID_SCREENPAD_LIGHT 0x00050032
> #define ASUS_WMI_DEVID_FAN_BOOST_MODE 0x00110018
> #define ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY 0x00120075
> +#define ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO 0x00110019
>  
> /* Misc */
> #define ASUS_WMI_DEVID_PANEL_OD 0x00050019
> -- 
> 2.44.0
> 
 
If Hans and Ilpo don't have any requirements then:

Signed-off-by: Luke D. Jones <luke@...nes.dev>

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