1. 根目录:
2. include
3. dt-bindings
4. pinctrl
5. dra.h

/*
 * This header provides constants for DRA pinctrl bindings.
 *
 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
 * Author: Rajendra Nayak <rnayak@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 _DT_BINDINGS_PINCTRL_DRA_H
#define _DT_BINDINGS_PINCTRL_DRA_H

/* DRA7 mux mode options for each pin. See TRM for options */
#define MUX_MODE0	0x0
#define MUX_MODE1	0x1
#define MUX_MODE2	0x2
#define MUX_MODE3	0x3
#define MUX_MODE4	0x4
#define MUX_MODE5	0x5
#define MUX_MODE6	0x6
#define MUX_MODE7	0x7
#define MUX_MODE8	0x8
#define MUX_MODE9	0x9
#define MUX_MODE10	0xa
#define MUX_MODE11	0xb
#define MUX_MODE12	0xc
#define MUX_MODE13	0xd
#define MUX_MODE14	0xe
#define MUX_MODE15	0xf

#define PULL_ENA		(0 << 16)
#define PULL_DIS		(1 << 16)
#define PULL_UP			(1 << 17)
#define INPUT_EN		(1 << 18)
#define SLEWCONTROL		(1 << 19)
#define WAKEUP_EN		(1 << 24)
#define WAKEUP_EVENT		(1 << 25)

/* Active pin states */
#define PIN_OUTPUT		(0 | PULL_DIS)
#define PIN_OUTPUT_PULLUP	(PULL_UP)
#define PIN_OUTPUT_PULLDOWN	(0)
#define PIN_INPUT		(INPUT_EN | PULL_DIS)
#define PIN_INPUT_SLEW		(INPUT_EN | SLEWCONTROL)
#define PIN_INPUT_PULLUP	(PULL_ENA | INPUT_EN | PULL_UP)
#define PIN_INPUT_PULLDOWN	(PULL_ENA | INPUT_EN)

#endif