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@xxxxxxxxxxxxx>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
---
drivers/input/rmi4/rmi_driver.c | 13 +++++++++++++
drivers/input/rmi4/rmi_driver.h | 1 +
2 files changed, 14 insertions(+)
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index 11447ab..87dbb0c 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -265,6 +265,19 @@ 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 24f8f76..0506371 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,
--
2.9.3
--
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