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i2c: acpi: export i2c_acpi_find_adapter_by_handle

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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>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Ruslan Babayev 2019-05-28 16:02:32 -07:00 • committed by Wolfram Sang
parent 12cb084d0d
commit 5213d7efc8
2 changed files with 8 additions and 1 deletions
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6
include/linux/i2c.h
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@ -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 */