[PATCH] asus-wmi: Add support for platform_profile

[Luke D. Jones]

Add initial support for platform_profile where the support is
based on availability of ASUS_THROTTLE_THERMAL_POLICY.

Signed-off-by: Luke D. Jones <luke@xxxxxxxxxx>
---
 drivers/platform/x86/asus-wmi.c | 112 ++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 90a6a0d00deb..62260043c15c 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -26,6 +26,7 @@
 #include <linux/rfkill.h>
 #include <linux/pci.h>
 #include <linux/pci_hotplug.h>
+#include <linux/platform_profile.h>
 #include <linux/power_supply.h>
 #include <linux/hwmon.h>
 #include <linux/hwmon-sysfs.h>
@@ -219,6 +220,9 @@ struct asus_wmi {
 	bool throttle_thermal_policy_available;
 	u8 throttle_thermal_policy_mode;
 
+	struct platform_profile_handler platform_profile_handler;
+	bool platform_profile_support;
+
 	// The RSOC controls the maximum charging percentage.
 	bool battery_rsoc_available;
 
@@ -2144,6 +2148,106 @@ static ssize_t throttle_thermal_policy_store(struct device *dev,
 // Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent
 static DEVICE_ATTR_RW(throttle_thermal_policy);
 
+/* Platform profile ***********************************************************/
+static int platform_profile_get(struct platform_profile_handler *pprof,
+				enum platform_profile_option *profile)
+{
+	struct asus_wmi *asus;
+	int tp;
+
+	asus = container_of(pprof, struct asus_wmi, platform_profile_handler);
+
+	/* All possible toggles like throttle_thermal_policy here */
+	if (asus->throttle_thermal_policy_available) {
+		tp = asus->throttle_thermal_policy_mode;
+	} else {
+		return -1;
+	}
+
+	if (tp < 0)
+		return tp;
+
+	switch (tp) {
+	case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT:
+		*profile = PLATFORM_PROFILE_BALANCED;
+		break;
+	case ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST:
+		*profile = PLATFORM_PROFILE_PERFORMANCE;
+		break;
+	case ASUS_THROTTLE_THERMAL_POLICY_SILENT:
+		*profile = PLATFORM_PROFILE_QUIET;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int platform_profile_set(struct platform_profile_handler *pprof,
+				enum platform_profile_option profile)
+{
+	struct asus_wmi *asus;
+	int tp;
+
+	asus = container_of(pprof, struct asus_wmi, platform_profile_handler);
+
+	/* All possible toggles like throttle_thermal_policy here */
+	if (!asus->throttle_thermal_policy_available) {
+		return -1;
+	}
+
+	switch (profile) {
+	case PLATFORM_PROFILE_PERFORMANCE:
+		tp = ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST;
+		break;
+	case PLATFORM_PROFILE_BALANCED:
+		tp = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
+		break;
+	case PLATFORM_PROFILE_QUIET:
+		tp = ASUS_THROTTLE_THERMAL_POLICY_SILENT;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	if (asus->throttle_thermal_policy_available) {
+		asus->throttle_thermal_policy_mode = tp;
+		return throttle_thermal_policy_write(asus);
+	}
+	return 0;
+}
+
+static int platform_profile_setup(struct asus_wmi *asus)
+{
+	int err;
+
+	if (asus->throttle_thermal_policy_available) {
+		pr_info("Using throttle_thermal_policy for platform_profile support\n");
+	} else {
+		/*
+		 * Not an error if a component platform_profile relies on is unavailable
+		 * so early return, skipping the setup of platform_profile.
+		*/
+		return 0;
+	}
+	asus->platform_profile_handler.profile_get = platform_profile_get;
+	asus->platform_profile_handler.profile_set = platform_profile_set;
+
+	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);
+	if (err)
+		return err;
+
+	asus->platform_profile_support = true;
+	return 0;
+}
+
 /* Backlight ******************************************************************/
 
 static int read_backlight_power(struct asus_wmi *asus)
@@ -2904,6 +3008,10 @@ static int asus_wmi_add(struct platform_device *pdev)
 	else
 		throttle_thermal_policy_set_default(asus);
 
+	err = platform_profile_setup(asus);
+	if (err)
+		goto fail_platform_profile_setup;
+
 	err = panel_od_check_present(asus);
 	if (err)
 		goto fail_panel_od;
@@ -2993,6 +3101,7 @@ static int asus_wmi_add(struct platform_device *pdev)
 	asus_wmi_sysfs_exit(asus->platform_device);
 fail_sysfs:
 fail_throttle_thermal_policy:
+fail_platform_profile_setup:
 fail_fan_boost_mode:
 fail_egpu_enable:
 fail_dgpu_disable:
@@ -3017,6 +3126,9 @@ static int asus_wmi_remove(struct platform_device *device)
 	asus_fan_set_auto(asus);
 	asus_wmi_battery_exit(asus);
 
+	if (asus->platform_profile_support)
+		platform_profile_remove();
+
 	kfree(asus);
 	return 0;
 }
-- 
2.31.1