[PATCH 02/10] Input: synaptics-rmi4 - Add rmi_find_function()
From: Benjamin Tissoires <hidden>
Date: 2017-01-10 16:11:46
Also in:
lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
If a function needs to communicate with an other, it's better to have a way to retrieve this other. Reviewed-by: Andrew Duggan <redacted> Signed-off-by: Benjamin Tissoires <redacted> --- 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,
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2.9.3