[PATCH v6 0/3] switch platform profiles with Lenovo laptops

[PATCH v6 0/3] switch platform profiles with Lenovo laptops

[Gergo Koteles]

Hi All,

This patch series adds a platform_profile_cycle function to the platform 
profile module, which allows modules to easily switch between the 
enabled profiles.

Use it in ideapad-laptop and thinkpad-acpi modules.

Best regards,
Gergo

Changes in v6:
 - use PLATFORM_PROFILE_LAST instead of ARRAY_SIZE(profile_names) for 
 consistency

Changes in v5:
 - use find_next_bit_wrap function to find the next enabled profile 
 instead of multiple ffs calls

Changes in v4:
 - move the cycle to the platform profile module where it can switch 
 between the enabled profiles
 - add a patch to use it in the thinkpad-acpi module

Changes in v3:
 - add dytc_profile_cycle function

Changes in v2:
 - only switch platform profiles if supported, otherwise keep the 
   behavior.

[5]: https://lore.kernel.org/all/cover.1712360639.git.soyer@irl.hu/
[4]: https://lore.kernel.org/all/cover.1712282976.git.soyer@irl.hu/
[3]: https://lore.kernel.org/all/7c358ad8dd6de7889fa887954145a181501ac362.17122>
[2]: https://lore.kernel.org/all/797884d8cab030d3a2b656dba67f3c423cc58be7.17121>
[1]: https://lore.kernel.org/all/85254ce8e87570c05e7f04d6507701bef954ed75.17121>


Gergo Koteles (3):
  ACPI: platform-profile: add platform_profile_cycle()
  platform/x86: ideapad-laptop: switch platform profiles using thermal
    management key
  platform/x86: thinkpad_acpi: use platform_profile_cycle()

 drivers/acpi/platform_profile.c       | 39 +++++++++++++++++++++++++++
 drivers/platform/x86/ideapad-laptop.c |  7 +++--
 drivers/platform/x86/thinkpad_acpi.c  | 19 ++-----------
 include/linux/platform_profile.h      |  1 +
 4 files changed, 47 insertions(+), 19 deletions(-)


base-commit: 39cd87c4eb2b893354f3b850f916353f2658ae6f
-- 
2.44.0

[PATCH v6 1/3] ACPI: platform-profile: add platform_profile_cycle()

[Gergo Koteles]

Some laptops have a key to switch platform profiles.

Add a platform_profile_cycle() function to cycle between the enabled
profiles.

Signed-off-by: Gergo Koteles <soyer@irl.hu>
---
 drivers/acpi/platform_profile.c  | 39 ++++++++++++++++++++++++++++++++
 include/linux/platform_profile.h |  1 +
 2 files changed, 40 insertions(+)

diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index d418462ab791..4a9704730224 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -136,6 +136,45 @@ void platform_profile_notify(void)
 }
 EXPORT_SYMBOL_GPL(platform_profile_notify);
 
+int platform_profile_cycle(void)
+{
+	enum platform_profile_option profile;
+	enum platform_profile_option next;
+	int err;
+
+	err = mutex_lock_interruptible(&profile_lock);
+	if (err)
+		return err;
+
+	if (!cur_profile) {
+		mutex_unlock(&profile_lock);
+		return -ENODEV;
+	}
+
+	err = cur_profile->profile_get(cur_profile, &profile);
+	if (err) {
+		mutex_unlock(&profile_lock);
+		return err;
+	}
+
+	next = find_next_bit_wrap(cur_profile->choices, PLATFORM_PROFILE_LAST,
+				  profile + 1);
+
+	if (WARN_ON(next == PLATFORM_PROFILE_LAST)) {
+		mutex_unlock(&profile_lock);
+		return -EINVAL;
+	}
+
+	err = cur_profile->profile_set(cur_profile, next);
+	mutex_unlock(&profile_lock);
+
+	if (!err)
+		sysfs_notify(acpi_kobj, NULL, "platform_profile");
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(platform_profile_cycle);
+
 int platform_profile_register(struct platform_profile_handler *pprof)
 {
 	int err;
diff --git a/include/linux/platform_profile.h b/include/linux/platform_profile.h
index e5cbb6841f3a..f5492ed413f3 100644
--- a/include/linux/platform_profile.h
+++ b/include/linux/platform_profile.h
@@ -36,6 +36,7 @@ struct platform_profile_handler {
 
 int platform_profile_register(struct platform_profile_handler *pprof);
 int platform_profile_remove(void);
+int platform_profile_cycle(void);
 void platform_profile_notify(void);
 
 #endif  /*_PLATFORM_PROFILE_H_*/
-- 
2.44.0

[PATCH v6 2/3] platform/x86: ideapad-laptop: switch platform profiles using thermal management key

[Gergo Koteles]

Ideapad laptops have thermal management or performance mode switch key
(Fn + Q). They report KEY_PROG4.

If supported, cycle between platform profiles instead.

Tested on Yoga7 14ARB7.

Signed-off-by: Gergo Koteles <soyer@irl.hu>
---
 drivers/platform/x86/ideapad-laptop.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 901849810ce2..4893b1aef696 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -1181,8 +1181,11 @@ static void ideapad_check_special_buttons(struct ideapad_private *priv)
 		switch (bit) {
 		case 6:	/* Z570 */
 		case 0:	/* Z580 */
-			/* Thermal Management button */
-			ideapad_input_report(priv, 65);
+			/* Thermal Management / Performance Mode button */
+			if (priv->dytc)
+				platform_profile_cycle();
+			else
+				ideapad_input_report(priv, 65);
 			break;
 		case 1:
 			/* OneKey Theater button */
-- 
2.44.0

[PATCH v6 3/3] platform/x86: thinkpad_acpi: use platform_profile_cycle()

[Gergo Koteles]

Some Thinkpads have a 'mode' button that switches between platform
profiles.

Use the new platform_module_cycle function instead of the existing
switch-based one.

Signed-off-by: Gergo Koteles <soyer@irl.hu>
---
 drivers/platform/x86/thinkpad_acpi.c | 19 ++-----------------
 1 file changed, 2 insertions(+), 17 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 82429e59999d..771aaa7ae4cf 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -11190,23 +11190,8 @@ static void tpacpi_driver_event(const unsigned int hkey_event)
 		else
 			dytc_control_amt(!dytc_amt_active);
 	}
-	if (hkey_event == TP_HKEY_EV_PROFILE_TOGGLE) {
-		switch (dytc_current_profile) {
-		case PLATFORM_PROFILE_LOW_POWER:
-			dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
-			break;
-		case PLATFORM_PROFILE_BALANCED:
-			dytc_profile_set(NULL, PLATFORM_PROFILE_PERFORMANCE);
-			break;
-		case PLATFORM_PROFILE_PERFORMANCE:
-			dytc_profile_set(NULL, PLATFORM_PROFILE_LOW_POWER);
-			break;
-		default:
-			pr_warn("Profile HKEY unexpected profile %d", dytc_current_profile);
-		}
-		/* Notify user space the profile changed */
-		platform_profile_notify();
-	}
+	if (hkey_event == TP_HKEY_EV_PROFILE_TOGGLE)
+		platform_profile_cycle();
 }
 
 static void hotkey_driver_event(const unsigned int scancode)
-- 
2.44.0