linux-kernel - [PATCH AUTOSEL 6.6 37/75] ACPI: x86: Move acpi_quirk_skip_serdev_enumeration() out of CONFIG_X86_ANDROID

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Message-ID: <20240329124330.3089520-37-sashal@kernel.org>
Date: Fri, 29 Mar 2024 08:42:18 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Hans de Goede <hdegoede@...hat.com>,
	"Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
	Sasha Levin <sashal@...nel.org>,
	rafael@...nel.org,
	robert.moore@...el.com,
	michal.wilczynski@...el.com,
	mario.limonciello@....com,
	raag.jadav@...el.com,
	mail@...iushoch.de,
	linux-acpi@...r.kernel.org,
	acpica-devel@...ts.linux.dev
Subject: [PATCH AUTOSEL 6.6 37/75] ACPI: x86: Move acpi_quirk_skip_serdev_enumeration() out of CONFIG_X86_ANDROID_TABLETS

From: Hans de Goede <hdegoede@...hat.com>

[ Upstream commit 7c86e17455de1a442ec906d3449148b5e9a218a4 ]

Some recent(ish) Dell AIO devices have a backlight controller board
connected to an UART.

This UART has a DELL0501 HID with CID set to PNP0501 so that the UART is
still handled by 8250_pnp.c. Unfortunately there is no separate ACPI device
with an UartSerialBusV2() resource to model the backlight-controller.

The next patch in this series will use acpi_quirk_skip_serdev_enumeration()
to still create a serdev for this for a backlight driver to bind to
instead of creating a /dev/ttyS0.

This new acpi_quirk_skip_serdev_enumeration() use is not limited to Android
X86 tablets, so move it out of the ifdef CONFIG_X86_ANDROID_TABLETS block.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/acpi/x86/utils.c | 18 ++++++++++++++----
 include/acpi/acpi_bus.h  | 14 +++++++-------
 2 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c
index 63d834dd38112..c708524576df4 100644
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -429,7 +429,7 @@ bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
 }
 EXPORT_SYMBOL_GPL(acpi_quirk_skip_i2c_client_enumeration);
 
-int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
 {
 	struct acpi_device *adev = ACPI_COMPANION(controller_parent);
 	const struct dmi_system_id *dmi_id;
@@ -437,8 +437,6 @@ int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *s
 	u64 uid;
 	int ret;
 
-	*skip = false;
-
 	ret = acpi_dev_uid_to_integer(adev, &uid);
 	if (ret)
 		return 0;
@@ -464,7 +462,6 @@ int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *s
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
 
 bool acpi_quirk_skip_gpio_event_handlers(void)
 {
@@ -479,8 +476,21 @@ bool acpi_quirk_skip_gpio_event_handlers(void)
 	return (quirks & ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS);
 }
 EXPORT_SYMBOL_GPL(acpi_quirk_skip_gpio_event_handlers);
+#else
+static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+{
+	return 0;
+}
 #endif
 
+int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+{
+	*skip = false;
+
+	return acpi_dmi_skip_serdev_enumeration(controller_parent, skip);
+}
+EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
+
 /* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
 static const struct {
 	const char *hid;
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 0b7eab0ef7d7f..d9c20ae23b632 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -652,6 +652,7 @@ bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *s
 bool acpi_quirk_skip_acpi_ac_and_battery(void);
 int acpi_install_cmos_rtc_space_handler(acpi_handle handle);
 void acpi_remove_cmos_rtc_space_handler(acpi_handle handle);
+int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
 #else
 static inline bool acpi_device_override_status(struct acpi_device *adev,
 					       unsigned long long *status)
@@ -669,23 +670,22 @@ static inline int acpi_install_cmos_rtc_space_handler(acpi_handle handle)
 static inline void acpi_remove_cmos_rtc_space_handler(acpi_handle handle)
 {
 }
+static inline int
+acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+{
+	*skip = false;
+	return 0;
+}
 #endif
 
 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
-int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
 bool acpi_quirk_skip_gpio_event_handlers(void);
 #else
 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
 {
 	return false;
 }
-static inline int
-acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
-{
-	*skip = false;
-	return 0;
-}
 static inline bool acpi_quirk_skip_gpio_event_handlers(void)
 {
 	return false;
-- 
2.43.0