[RFC,2/3] ACPI: platform_profile: Add `choices` to platform_profile_ops

diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index 68e496ff5176..ec749c2d0695 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -464,14 +464,22 @@  int platform_profile_register(struct platform_profile_handler *pprof)
 	int err;
 
 	/* Sanity check the profile handler */
-	if (!pprof || bitmap_empty(pprof->choices, PLATFORM_PROFILE_LAST) ||
-	    !pprof->ops->set || !pprof->ops->get) {
+	if (!pprof || !pprof->ops->set || !pprof->ops->get || !pprof->ops->choices) {
 		pr_err("platform_profile: handler is invalid\n");
 		return -EINVAL;
 	}
 
 	guard(mutex)(&profile_lock);
 
+	err = pprof->ops->choices(pprof);
+	if (err < 0)
+		return err;
+
+	if (bitmap_empty(pprof->choices, PLATFORM_PROFILE_LAST)) {
+		pr_err("platform_profile: no available profiles\n");
+		return -EINVAL;
+	}
+
 	/* create class interface for individual handler */
 	pprof->minor = ida_alloc(&platform_profile_ida, GFP_KERNEL);
 	if (pprof->minor < 0)
diff --git a/drivers/platform/surface/surface_platform_profile.c b/drivers/platform/surface/surface_platform_profile.c
index 8077d556e616..173f89d59c31 100644
--- a/drivers/platform/surface/surface_platform_profile.c
+++ b/drivers/platform/surface/surface_platform_profile.c
@@ -201,9 +201,20 @@  static int ssam_platform_profile_set(struct platform_profile_handler *pprof,
 	return tp;
 }
 
+static int ssam_platform_profile_choices(struct platform_profile_handler *pprof)
+{
+	set_bit(PLATFORM_PROFILE_LOW_POWER, pprof->choices);
+	set_bit(PLATFORM_PROFILE_BALANCED, pprof->choices);
+	set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, pprof->choices);
+	set_bit(PLATFORM_PROFILE_PERFORMANCE, pprof->choices);
+
+	return 0;
+}
+
 static const struct platform_profile_ops ssam_platform_profile_ops = {
 	.get = ssam_platform_profile_get,
 	.set = ssam_platform_profile_set,
+	.choices = ssam_platform_profile_choices,
 };
 
 static int surface_platform_profile_probe(struct ssam_device *sdev)
@@ -223,11 +234,6 @@  static int surface_platform_profile_probe(struct ssam_device *sdev)
 
 	tpd->has_fan = device_property_read_bool(&sdev->dev, "has_fan");
 
-	set_bit(PLATFORM_PROFILE_LOW_POWER, tpd->handler.choices);
-	set_bit(PLATFORM_PROFILE_BALANCED, tpd->handler.choices);
-	set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, tpd->handler.choices);
-	set_bit(PLATFORM_PROFILE_PERFORMANCE, tpd->handler.choices);
-
 	return platform_profile_register(&tpd->handler);
 }
 
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 26d6b9cdfd12..deaadada5506 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -1900,9 +1900,22 @@  acer_predator_v4_platform_profile_set(struct platform_profile_handler *pprof,
 	return 0;
 }
 
+static int
+acer_predator_v4_platform_profile_choices(struct platform_profile_handler *pprof)
+{
+	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);
+
+	return 0;
+}
+
 static const struct platform_profile_ops acer_predator_v4_platform_profile_ops = {
 	.get = acer_predator_v4_platform_profile_get,
 	.set = acer_predator_v4_platform_profile_set,
+	.choices = acer_predator_v4_platform_profile_choices,
 };
 
 static int acer_platform_profile_setup(struct platform_device *device)
@@ -1915,17 +1928,6 @@  static int acer_platform_profile_setup(struct platform_device *device)
 		platform_profile_handler.ops =
 			&acer_predator_v4_platform_profile_ops;
 
-		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 = platform_profile_register(&platform_profile_handler);
 		if (err)
 			return err;
diff --git a/drivers/platform/x86/amd/pmf/sps.c b/drivers/platform/x86/amd/pmf/sps.c
index 1b87254a7120..e6132edcab1b 100644
--- a/drivers/platform/x86/amd/pmf/sps.c
+++ b/drivers/platform/x86/amd/pmf/sps.c
@@ -387,9 +387,19 @@  static int amd_pmf_profile_set(struct platform_profile_handler *pprof,
 	return 0;
 }
 
+static int amd_pmf_profile_choices(struct platform_profile_handler *pprof)
+{
+	set_bit(PLATFORM_PROFILE_LOW_POWER, pprof->choices);
+	set_bit(PLATFORM_PROFILE_BALANCED, pprof->choices);
+	set_bit(PLATFORM_PROFILE_PERFORMANCE, pprof->choices);
+
+	return 0;
+}
+
 static const struct platform_profile_ops amd_pmf_profile_ops = {
 	.get = amd_pmf_profile_get,
 	.set = amd_pmf_profile_set,
+	.choices = amd_pmf_profile_choices,
 };
 
 int amd_pmf_init_sps(struct amd_pmf_dev *dev)
@@ -414,11 +424,6 @@  int amd_pmf_init_sps(struct amd_pmf_dev *dev)
 	dev->pprof.dev = dev->dev;
 	dev->pprof.ops = &amd_pmf_profile_ops;
 
-	/* Setup supported modes */
-	set_bit(PLATFORM_PROFILE_LOW_POWER, dev->pprof.choices);
-	set_bit(PLATFORM_PROFILE_BALANCED, dev->pprof.choices);
-	set_bit(PLATFORM_PROFILE_PERFORMANCE, dev->pprof.choices);
-
 	/* Create platform_profile structure and register */
 	err = platform_profile_register(&dev->pprof);
 	if (err)
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index d0828b1499b1..850225adf05c 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -3852,9 +3852,19 @@  static int asus_wmi_platform_profile_set(struct platform_profile_handler *pprof,
 	return throttle_thermal_policy_write(asus);
 }
 
+static int asus_wmi_platform_profile_choices(struct platform_profile_handler *pprof)
+{
+	set_bit(PLATFORM_PROFILE_QUIET, pprof->choices);
+	set_bit(PLATFORM_PROFILE_BALANCED, pprof->choices);
+	set_bit(PLATFORM_PROFILE_PERFORMANCE, pprof->choices);
+
+	return 0;
+}
+
 static const struct platform_profile_ops asus_wmi_platform_profile_ops = {
 	.get = asus_wmi_platform_profile_get,
 	.set = asus_wmi_platform_profile_set,
+	.choices = asus_wmi_platform_profile_choices,
 };
 
 static int platform_profile_setup(struct asus_wmi *asus)
@@ -3885,12 +3895,6 @@  static int platform_profile_setup(struct asus_wmi *asus)
 	asus->platform_profile_handler.dev = dev;
 	asus->platform_profile_handler.ops = &asus_wmi_platform_profile_ops;
 
-	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 == -EEXIST) {
 		pr_warn("%s, a platform_profile handler is already registered\n", __func__);
diff --git a/drivers/platform/x86/dell/alienware-wmi.c b/drivers/platform/x86/dell/alienware-wmi.c
index dd6b7d16b567..28cc9f01f70c 100644
--- a/drivers/platform/x86/dell/alienware-wmi.c
+++ b/drivers/platform/x86/dell/alienware-wmi.c
@@ -1108,12 +1108,7 @@  static int thermal_profile_set(struct platform_profile_handler *pprof,
 	return wmax_thermal_control(supported_thermal_profiles[profile]);
 }
 
-static const struct platform_profile_ops awcc_platform_profile_ops = {
-	.get = thermal_profile_get,
-	.set = thermal_profile_set,
-};
-
-static int create_thermal_profile(struct platform_device *platform_device)
+static int thermal_profile_choices(struct platform_profile_handler *pprof)
 {
 	u32 out_data;
 	u8 sys_desc[4];
@@ -1149,9 +1144,6 @@  static int create_thermal_profile(struct platform_device *platform_device)
 		set_bit(profile, pp_handler.choices);
 	}
 
-	if (bitmap_empty(pp_handler.choices, PLATFORM_PROFILE_LAST))
-		return -ENODEV;
-
 	if (quirks->gmode) {
 		supported_thermal_profiles[PLATFORM_PROFILE_PERFORMANCE] =
 			WMAX_THERMAL_MODE_GMODE;
@@ -1159,6 +1151,17 @@  static int create_thermal_profile(struct platform_device *platform_device)
 		set_bit(PLATFORM_PROFILE_PERFORMANCE, pp_handler.choices);
 	}
 
+	return 0;
+}
+
+static const struct platform_profile_ops awcc_platform_profile_ops = {
+	.get = thermal_profile_get,
+	.set = thermal_profile_set,
+	.choices = thermal_profile_choices,
+};
+
+static int create_thermal_profile(struct platform_device *platform_device)
+{
 	pp_handler.name = "alienware-wmi";
 	pp_handler.dev = &platform_device->dev;
 	pp_handler.ops = &awcc_platform_profile_ops;
diff --git a/drivers/platform/x86/dell/dell-pc.c b/drivers/platform/x86/dell/dell-pc.c
index 9af63a9bdefe..ae49f6055aff 100644
--- a/drivers/platform/x86/dell/dell-pc.c
+++ b/drivers/platform/x86/dell/dell-pc.c
@@ -24,6 +24,7 @@ 
 #include "dell-smbios.h"
 
 static struct platform_device *platform_device;
+static int supported_modes;
 
 static const struct dmi_system_id dell_device_table[] __initconst = {
 	{
@@ -231,15 +232,29 @@  static int thermal_platform_profile_get(struct platform_profile_handler *pprof,
 	return 0;
 }
 
+static int thermal_platform_profile_choices(struct platform_profile_handler *pprof)
+{
+	if (supported_modes & DELL_QUIET)
+		set_bit(PLATFORM_PROFILE_QUIET, thermal_handler->choices);
+	if (supported_modes & DELL_COOL_BOTTOM)
+		set_bit(PLATFORM_PROFILE_COOL, thermal_handler->choices);
+	if (supported_modes & DELL_BALANCED)
+		set_bit(PLATFORM_PROFILE_BALANCED, thermal_handler->choices);
+	if (supported_modes & DELL_PERFORMANCE)
+		set_bit(PLATFORM_PROFILE_PERFORMANCE, thermal_handler->choices);
+
+	return 0;
+}
+
 static const struct platform_profile_ops dell_pc_platform_profile_ops = {
 	.get = thermal_platform_profile_get,
 	.set = thermal_platform_profile_set,
+	.choices = thermal_platform_profile_choices,
 };
 
 static int thermal_init(void)
 {
 	int ret;
-	int supported_modes;
 
 	/* If thermal commands are not supported, exit without error */
 	if (!dell_smbios_class_is_supported(CLASS_INFO))
@@ -265,15 +280,6 @@  static int thermal_init(void)
 	thermal_handler->dev = &platform_device->dev;
 	thermal_handler->ops = &dell_pc_platform_profile_ops;
 
-	if (supported_modes & DELL_QUIET)
-		set_bit(PLATFORM_PROFILE_QUIET, thermal_handler->choices);
-	if (supported_modes & DELL_COOL_BOTTOM)
-		set_bit(PLATFORM_PROFILE_COOL, thermal_handler->choices);
-	if (supported_modes & DELL_BALANCED)
-		set_bit(PLATFORM_PROFILE_BALANCED, thermal_handler->choices);
-	if (supported_modes & DELL_PERFORMANCE)
-		set_bit(PLATFORM_PROFILE_PERFORMANCE, thermal_handler->choices);
-
 	/* Clean up if failed */
 	ret = platform_profile_register(thermal_handler);
 	if (ret)
diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c
index dbd19d93fdd6..3285e72f312d 100644
--- a/drivers/platform/x86/hp/hp-wmi.c
+++ b/drivers/platform/x86/hp/hp-wmi.c
@@ -1488,6 +1488,23 @@  static int platform_profile_victus_set(struct platform_profile_handler *pprof,
 	return 0;
 }
 
+static int hp_wmi_platform_profile_choices(struct platform_profile_handler *pprof)
+{
+	if (is_omen_thermal_profile()) {
+		set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
+	} else if (is_victus_thermal_profile()) {
+		set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
+	} else {
+		set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
+		set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
+	}
+
+	set_bit(PLATFORM_PROFILE_BALANCED, platform_profile_handler.choices);
+	set_bit(PLATFORM_PROFILE_PERFORMANCE, platform_profile_handler.choices);
+
+	return 0;
+}
+
 static int omen_powersource_event(struct notifier_block *nb,
 				  unsigned long value,
 				  void *data)
@@ -1568,16 +1585,19 @@  static inline void omen_unregister_powersource_event_handler(void)
 static const struct platform_profile_ops platform_profile_omen_ops = {
 	.get = platform_profile_omen_get,
 	.set = platform_profile_omen_set,
+	.choices = hp_wmi_platform_profile_choices,
 };
 
 static const struct platform_profile_ops platform_profile_victus_ops = {
 	.get = platform_profile_victus_get,
 	.set = platform_profile_victus_set,
+	.choices = hp_wmi_platform_profile_choices,
 };
 
 static const struct platform_profile_ops hp_wmi_platform_profile_ops = {
 	.get = hp_wmi_platform_profile_get,
 	.set = hp_wmi_platform_profile_set,
+	.choices = hp_wmi_platform_profile_choices,
 };
 
 static int thermal_profile_setup(struct platform_device *device)
@@ -1598,8 +1618,6 @@  static int thermal_profile_setup(struct platform_device *device)
 			return err;
 
 		platform_profile_handler.ops = &platform_profile_omen_ops;
-
-		set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
 	} else if (is_victus_thermal_profile()) {
 		err = platform_profile_victus_get_ec(&active_platform_profile);
 		if (err < 0)
@@ -1614,8 +1632,6 @@  static int thermal_profile_setup(struct platform_device *device)
 			return err;
 
 		platform_profile_handler.ops = &platform_profile_victus_ops;
-
-		set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
 	} else {
 		tp = thermal_profile_get();
 
@@ -1631,15 +1647,10 @@  static int thermal_profile_setup(struct platform_device *device)
 			return err;
 
 		platform_profile_handler.ops = &hp_wmi_platform_profile_ops;
-
-		set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
-		set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
 	}
 
 	platform_profile_handler.name = "hp-wmi";
 	platform_profile_handler.dev = &device->dev;
-	set_bit(PLATFORM_PROFILE_BALANCED, platform_profile_handler.choices);
-	set_bit(PLATFORM_PROFILE_PERFORMANCE, platform_profile_handler.choices);
 
 	err = platform_profile_register(&platform_profile_handler);
 	if (err)
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index f3414964c3b9..f5c286572e75 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -1023,6 +1023,15 @@  static int dytc_profile_set(struct platform_profile_handler *pprof,
 	return -EINTR;
 }
 
+static int dytc_profile_choices(struct platform_profile_handler *pprof)
+{
+	set_bit(PLATFORM_PROFILE_LOW_POWER, pprof->choices);
+	set_bit(PLATFORM_PROFILE_BALANCED, pprof->choices);
+	set_bit(PLATFORM_PROFILE_PERFORMANCE, pprof->choices);
+
+	return 0;
+}
+
 static void dytc_profile_refresh(struct ideapad_private *priv)
 {
 	enum platform_profile_option profile;
@@ -1066,6 +1075,7 @@  static const struct dmi_system_id ideapad_dytc_v4_allow_table[] = {
 static const struct platform_profile_ops dytc_profile_ops = {
 	.get = dytc_profile_get,
 	.set = dytc_profile_set,
+	.choices = dytc_profile_choices,
 };
 
 static int ideapad_dytc_profile_init(struct ideapad_private *priv)
@@ -1112,11 +1122,6 @@  static int ideapad_dytc_profile_init(struct ideapad_private *priv)
 	priv->dytc->priv = priv;
 	priv->dytc->pprof.ops = &dytc_profile_ops;
 
-	/* Setup supported modes */
-	set_bit(PLATFORM_PROFILE_LOW_POWER, priv->dytc->pprof.choices);
-	set_bit(PLATFORM_PROFILE_BALANCED, priv->dytc->pprof.choices);
-	set_bit(PLATFORM_PROFILE_PERFORMANCE, priv->dytc->pprof.choices);
-
 	/* Create platform_profile structure and register */
 	err = platform_profile_register(&priv->dytc->pprof);
 	if (err)
diff --git a/drivers/platform/x86/inspur_platform_profile.c b/drivers/platform/x86/inspur_platform_profile.c
index 6113b87c4858..c4e5ed5429a8 100644
--- a/drivers/platform/x86/inspur_platform_profile.c
+++ b/drivers/platform/x86/inspur_platform_profile.c
@@ -166,9 +166,19 @@  static int inspur_platform_profile_get(struct platform_profile_handler *pprof,
 	return 0;
 }
 
+static int inspur_platform_profile_choices(struct platform_profile_handler *pprof)
+{
+	set_bit(PLATFORM_PROFILE_LOW_POWER, pprof->choices);
+	set_bit(PLATFORM_PROFILE_BALANCED, pprof->choices);
+	set_bit(PLATFORM_PROFILE_PERFORMANCE, pprof->choices);
+
+	return 0;
+}
+
 static const struct platform_profile_ops inspur_platform_profile_ops = {
 	.get = inspur_platform_profile_get,
 	.set = inspur_platform_profile_set,
+	.choices = inspur_platform_profile_choices,
 };
 
 static int inspur_wmi_probe(struct wmi_device *wdev, const void *context)
@@ -186,10 +196,6 @@  static int inspur_wmi_probe(struct wmi_device *wdev, const void *context)
 	priv->handler.dev = &wdev->dev;
 	priv->handler.ops = &inspur_platform_profile_ops;
 
-	set_bit(PLATFORM_PROFILE_LOW_POWER, priv->handler.choices);
-	set_bit(PLATFORM_PROFILE_BALANCED, priv->handler.choices);
-	set_bit(PLATFORM_PROFILE_PERFORMANCE, priv->handler.choices);
-
 	return platform_profile_register(&priv->handler);
 }
 
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 519d9cb0af57..b9702c29937e 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -10538,9 +10538,19 @@  static int dytc_profile_set(struct platform_profile_handler *pprof,
 	return err;
 }
 
+static int dytc_profile_choices(struct platform_profile_handler *pprof)
+{
+	set_bit(PLATFORM_PROFILE_LOW_POWER, pprof->choices);
+	set_bit(PLATFORM_PROFILE_BALANCED, pprof->choices);
+	set_bit(PLATFORM_PROFILE_PERFORMANCE, pprof->choices);
+
+	return 0;
+}
+
 static const struct platform_profile_ops dytc_profile_ops = {
 	.get = dytc_profile_get,
 	.set = dytc_profile_set,
+	.choices = dytc_profile_choices,
 };
 
 static struct platform_profile_handler dytc_profile = {
@@ -10584,11 +10594,6 @@  static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
 {
 	int err, output;
 
-	/* Setup supported modes */
-	set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices);
-	set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices);
-	set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices);
-
 	err = dytc_command(DYTC_CMD_QUERY, &output);
 	if (err)
 		return err;
diff --git a/include/linux/platform_profile.h b/include/linux/platform_profile.h
index 8031bf801d70..7f266a60b41a 100644
--- a/include/linux/platform_profile.h
+++ b/include/linux/platform_profile.h
@@ -34,6 +34,7 @@  struct platform_profile_ops {
 			enum platform_profile_option *profile);
 	int (*set)(struct platform_profile_handler *pprof,
 			enum platform_profile_option profile);
+	int (*choices)(struct platform_profile_handler *pprof);
 };
 
 struct platform_profile_handler {