[PATCH] platform/x86: asus-wmi: add support for vivobook fan profiles

From: Luke D. Jones
Date: Sat Apr 13 2024 - 16:21:43 EST

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From: Mohamed Ghanmi <mohamed.ghanmi@xxxxxxxxx>

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 and adds a new
full speed mode available on these laptops.

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@xxxxxxxxx>
Co-developed-by: Luke D. Jones <luke@xxxxxxxxxx>
Signed-off-by: Luke D. Jones <luke@xxxxxxxxxx>
---
drivers/platform/x86/asus-wmi.c | 100 +++++++++++----------
include/linux/platform_data/x86/asus-wmi.h | 1 +
2 files changed, 55 insertions(+), 46 deletions(-)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 2d2b4eca7fd8..439d330fb80b 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -97,6 +97,11 @@ 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_OVERBOOST_VIVO 2
+#define ASUS_THROTTLE_THERMAL_POLICY_SILENT_VIVO 1
+#define ASUS_THROTTLE_THERMAL_POLICY_FULLSPEED 3
+
#define USB_INTEL_XUSB2PR 0xD0
#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31

@@ -285,8 +290,8 @@ 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;
@@ -3153,7 +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)
@@ -3360,7 +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;
@@ -3577,8 +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)
{
@@ -3619,38 +3624,31 @@ 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;
+ bool vivo;
+ int err;

- value = asus->throttle_thermal_policy_mode;
+ vivo = asus->throttle_thermal_policy_dev == ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO;
+ if (vivo) {
+ switch (value) {
+ case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT:
+ value = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT_VIVO;
+ break;
+ case ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST:
+ value = ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST_VIVO;
+ break;
+ case ASUS_THROTTLE_THERMAL_POLICY_SILENT:
+ value = ASUS_THROTTLE_THERMAL_POLICY_SILENT_VIVO;
+ break;
+ default:
+ break;
+ }
+ }

- 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,
@@ -3680,7 +3678,7 @@ 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;
@@ -3690,9 +3688,14 @@ static int throttle_thermal_policy_set_default(struct asus_wmi *asus)
static int throttle_thermal_policy_switch_next(struct asus_wmi *asus)
{
u8 new_mode = asus->throttle_thermal_policy_mode + 1;
+ bool vivo;
int err;

- if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
+ vivo = asus->throttle_thermal_policy_dev == ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO;
+ if (!vivo && new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
+ new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
+
+ if (vivo && new_mode > ASUS_THROTTLE_THERMAL_POLICY_FULLSPEED)
new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;

asus->throttle_thermal_policy_mode = new_mode;
@@ -3725,13 +3728,17 @@ static ssize_t throttle_thermal_policy_store(struct device *dev,
struct asus_wmi *asus = dev_get_drvdata(dev);
u8 new_mode;
int result;
+ bool vivo;
int err;

result = kstrtou8(buf, 10, &new_mode);
if (result < 0)
return result;

- if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
+ vivo = asus->throttle_thermal_policy_dev == ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO;
+ if (vivo && new_mode > ASUS_THROTTLE_THERMAL_POLICY_FULLSPEED)
+ return -EINVAL;
+ else if (!vivo && new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
return -EINVAL;

asus->throttle_thermal_policy_mode = new_mode;
@@ -3748,7 +3755,10 @@ 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
+ * VIVOBOOK: 3 - fans full speed
+ */
static DEVICE_ATTR_RW(throttle_thermal_policy);

/* Platform profile ***********************************************************/
@@ -3814,7 +3824,7 @@ 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");
@@ -4229,7 +4239,7 @@ 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;

@@ -4401,7 +4411,7 @@ 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)
@@ -4693,16 +4703,15 @@ 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;
@@ -4797,7 +4806,6 @@ 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 3eb5cd6773ad..982a637744ec 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

Next message: Javier Carrasco: "[PATCH v3 0/4] rtc: convert multiple bindings into dtschema"
Previous message: Jarkko Sakkinen: "Re: [PATCH v2 4/4] kprobes: Remove core dependency on modules"
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