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>
---
no changes in v2
---
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 c83bce8..e210e8f 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -181,6 +181,19 @@ int rmi_process_interrupt_requests(struct rmi_device *rmi_dev)
}
EXPORT_SYMBOL_GPL(rmi_process_interrupt_requests);
+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 fe26aca..9da1ee4 100644
--- a/drivers/input/rmi4/rmi_driver.h
+++ b/drivers/input/rmi4/rmi_driver.h
@@ -95,6 +95,7 @@ bool rmi_register_desc_has_subpacket(const struct rmi_register_desc_item *item,
bool rmi_is_physical_driver(struct device_driver *);
int rmi_register_physical_driver(void);
void rmi_unregister_physical_driver(void);
+struct rmi_function *rmi_find_function(struct rmi_device *rmi_dev, u8 number);
char *rmi_f01_get_product_ID(struct rmi_function *fn);
--
2.7.4
--
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