diff options
| author | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2017-02-06 09:57:01 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-02-06 14:15:42 -0800 |
| commit | f32361b71ae5c81b8fb96f796ab947ba2ad17aa8 (patch) | |
| tree | df913b70b4717ad957f8b9c5e6c91a1b7aae7c6a | |
| parent | ce363f0dec73b8ec2209a02a7271a9e67ed61368 (diff) | |
| download | linux-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>
| -rw-r--r-- | drivers/input/rmi4/rmi_driver.c | 13 | ||||
| -rw-r--r-- | drivers/input/rmi4/rmi_driver.h | 1 |
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, |