From: Hans de Goede <hdegoede@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 bc65ebfcdf767..8829a907eee02 100644
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -428,7 +428,7 @@ 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;
@@ -436,8 +436,6 @@ 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;
@@ -463,7 +461,6 @@ 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)
{
@@ -478,8 +475,21 @@ 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 e4d24d3f9abb5..446225aada50d 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -749,6 +749,7 @@ 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)
@@ -766,23 +767,22 @@ 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
