@@ -337,7 +337,7 @@ static int i2c_acpi_find_match_device(struct device *dev, void *data)
return ACPI_COMPANION(dev) == data;
}
-static struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle)
+struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle)
{
struct device *dev;
@@ -345,6 +345,7 @@ static struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle)
i2c_acpi_find_match_adapter);
return dev ? i2c_verify_adapter(dev) : NULL;
}
+EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle);
static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev)
{
@@ -33,6 +33,7 @@
#include <linux/rtmutex.h>
#include <linux/irqdomain.h> /* for Host Notify IRQ */
#include <linux/of.h> /* for struct device_node */
+#include <linux/acpi.h> /* for acpi_handle */
#include <linux/swab.h> /* for swab16 */
#include <uapi/linux/i2c.h>
@@ -977,6 +978,7 @@ bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares,
u32 i2c_acpi_find_bus_speed(struct device *dev);
struct i2c_client *i2c_acpi_new_device(struct device *dev, int index,
struct i2c_board_info *info);
+struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle);
#else
static inline bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares,
struct acpi_resource_i2c_serialbus **i2c)
@@ -992,6 +994,10 @@ static inline struct i2c_client *i2c_acpi_new_device(struct device *dev,
{
return NULL;
}
+struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle)
+{
+ return NULL;
+}
#endif /* CONFIG_ACPI */
#endif /* _LINUX_I2C_H */
This allows drivers to lookup i2c adapters on ACPI based systems similar to of_get_i2c_adapter_by_node() with DT based systems. Signed-off-by: Ruslan Babayev <ruslan@babayev.com> Cc: xe-linux-external@cisco.com --- drivers/i2c/i2c-core-acpi.c | 3 ++- include/linux/i2c.h | 6 ++++++ 2 files changed, 8 insertions(+), 1 deletion(-)