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authorBenjamin Tissoires <benjamin.tissoires@redhat.com>2017-02-06 09:57:01 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-02-06 14:15:42 -0800
commitf32361b71ae5c81b8fb96f796ab947ba2ad17aa8 (patch)
treedf913b70b4717ad957f8b9c5e6c91a1b7aae7c6a /drivers/input/rmi4
parentce363f0dec73b8ec2209a02a7271a9e67ed61368 (diff)
downloadlinux-f32361b71ae5c81b8fb96f796ab947ba2ad17aa8.tar.bz2
Input: synaptics-rmi4 - add rmi_find_function()
If a function needs to communicate with an other, it's better to have a way to retrieve this other. Reviewed-by: Andrew Duggan <aduggan@synaptics.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/rmi4')
-rw-r--r--drivers/input/rmi4/rmi_driver.c13
-rw-r--r--drivers/input/rmi4/rmi_driver.h1
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index b3985500dd91..23d705be39d4 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -266,6 +266,19 @@ static int rmi_irq_init(struct rmi_device *rmi_dev)
return 0;
}
+struct rmi_function *rmi_find_function(struct rmi_device *rmi_dev, u8 number)
+{
+ struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev);
+ struct rmi_function *entry;
+
+ list_for_each_entry(entry, &data->function_list, node) {
+ if (entry->fd.function_number == number)
+ return entry;
+ }
+
+ return NULL;
+}
+
static int suspend_one_function(struct rmi_function *fn)
{
struct rmi_function_handler *fh;
diff --git a/drivers/input/rmi4/rmi_driver.h b/drivers/input/rmi4/rmi_driver.h
index a480333a9e1c..6e0449cdca68 100644
--- a/drivers/input/rmi4/rmi_driver.h
+++ b/drivers/input/rmi4/rmi_driver.h
@@ -93,6 +93,7 @@ bool rmi_is_physical_driver(struct device_driver *);
int rmi_register_physical_driver(void);
void rmi_unregister_physical_driver(void);
void rmi_free_function_list(struct rmi_device *rmi_dev);
+struct rmi_function *rmi_find_function(struct rmi_device *rmi_dev, u8 number);
int rmi_enable_sensor(struct rmi_device *rmi_dev);
int rmi_scan_pdt(struct rmi_device *rmi_dev, void *ctx,
int (*callback)(struct rmi_device *rmi_dev, void *ctx,