diff mbox series

[net-next,v4,1/2] i2c: acpi: export i2c_acpi_find_adapter_by_handle

Message ID 20190528230233.26772-2-ruslan@babayev.com
State Accepted
Delegated to: David Miller
Headers show
Series Enable SFP on ACPI based systems | expand

Commit Message

Ruslan Babayev May 28, 2019, 11:02 p.m. UTC 
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(-)

Comments

Andrew Lunn May 29, 2019, 3:49 p.m. UTC | #1 
On Tue, May 28, 2019 at 04:02:32PM -0700, Ruslan Babayev wrote:
> 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>

    Andrew
Wolfram Sang June 2, 2019, 7:58 p.m. UTC | #2 
On Tue, May 28, 2019 at 04:02:32PM -0700, Ruslan Babayev wrote:
> 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

As mentioned elsewhere, applied to for-next, thanks!
diff mbox series

Patch

diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index 272800692088..964687534754 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -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)
 {
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 1308126fc384..e982b8913b73 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -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 */