Commit 1e91a2e5 authored by Ruslan Babayev's avatar Ruslan Babayev Committed by David S. Miller

i2c: acpi: export i2c_acpi_find_adapter_by_handle

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: default avatarRuslan Babayev <ruslan@babayev.com>
Cc: xe-linux-external@cisco.com
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 517f4c49
......@@ -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)
{
......
......@@ -14,6 +14,7 @@
#ifndef _LINUX_I2C_H
#define _LINUX_I2C_H
#include <linux/acpi.h> /* for acpi_handle */
#include <linux/mod_devicetable.h>
#include <linux/device.h> /* for struct device */
#include <linux/sched.h> /* for completion */
......@@ -981,6 +982,7 @@ 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)
......@@ -996,6 +998,10 @@ static inline struct i2c_client *i2c_acpi_new_device(struct device *dev,
{
return NULL;
}
static inline struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle)
{
return NULL;
}
#endif /* CONFIG_ACPI */
#endif /* _LINUX_I2C_H */
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