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Input: synaptics-rmi4 - allow to add attention data

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The HID implementation of RMI4 provides the data during
the interrupt (in the input report). We need to provide
a way for this transport driver to provide the attention
data while calling an IRQ.

We use a fifo in rmi_core to not lose any incoming event.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Andrew Duggan <aduggan@synaptics.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Benjamin Tissoires
2016-12-02 17:48:51 -08:00
committed by Dmitry Torokhov
parent e621132f93
commit b908d3cd81
2 changed files with 58 additions and 2 deletions
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11
include/linux/rmi.h
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@@ -13,6 +13,7 @@
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/kfifo.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/types.h>
@@ -331,6 +332,12 @@ struct rmi_device {
};
struct rmi4_attn_data {
unsigned long irq_status;
size_t size;
void *data;
};
struct rmi_driver_data {
struct list_head function_list;
@@ -357,11 +364,15 @@ struct rmi_driver_data {
bool enabled;
struct mutex enabled_mutex;
DECLARE_KFIFO(attn_fifo, struct rmi4_attn_data, 16);
};
int rmi_register_transport_device(struct rmi_transport_dev *xport);
void rmi_unregister_transport_device(struct rmi_transport_dev *xport);
void rmi_set_attn_data(struct rmi_device *rmi_dev, unsigned long irq_status,
void *data, size_t size);
int rmi_driver_suspend(struct rmi_device *rmi_dev, bool enable_wake);
int rmi_driver_resume(struct rmi_device *rmi_dev, bool clear_wake);
#endif