mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-30 16:13:54 +08:00
30ba3ead05
This patch implements a simple Keypad driver that functions as an I2C client. It handles key press events for keys connected to TCA6416 I2C based IO expander. Signed-off-by: Sriramakrishnan <srk@ti.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
35 lines
847 B
C
35 lines
847 B
C
/*
|
|
* tca6416 keypad platform support
|
|
*
|
|
* Copyright (C) 2010 Texas Instruments
|
|
*
|
|
* Author: Sriramakrishnan <srk@ti.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef _TCA6416_KEYS_H
|
|
#define _TCA6416_KEYS_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct tca6416_button {
|
|
/* Configuration parameters */
|
|
int code; /* input event code (KEY_*, SW_*) */
|
|
int active_low;
|
|
int type; /* input event type (EV_KEY, EV_SW) */
|
|
};
|
|
|
|
struct tca6416_keys_platform_data {
|
|
struct tca6416_button *buttons;
|
|
int nbuttons;
|
|
unsigned int rep:1; /* enable input subsystem auto repeat */
|
|
uint16_t pinmask;
|
|
uint16_t invert;
|
|
int irq_is_gpio;
|
|
int use_polling; /* use polling if Interrupt is not connected*/
|
|
};
|
|
#endif
|