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/*
* (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __MACH_MX5_IOMUX_H__
#define __MACH_MX5_IOMUX_H__
#include <common.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/mx5x_pins.h>
typedef unsigned int iomux_pin_name_t;
/* various IOMUX output functions */
typedef enum iomux_config {
IOMUX_CONFIG_ALT0, /*!< used as alternate function 0 */
IOMUX_CONFIG_ALT1, /*!< used as alternate function 1 */
IOMUX_CONFIG_ALT2, /*!< used as alternate function 2 */
IOMUX_CONFIG_ALT3, /*!< used as alternate function 3 */
IOMUX_CONFIG_ALT4, /*!< used as alternate function 4 */
IOMUX_CONFIG_ALT5, /*!< used as alternate function 5 */
IOMUX_CONFIG_ALT6, /*!< used as alternate function 6 */
IOMUX_CONFIG_ALT7, /*!< used as alternate function 7 */
IOMUX_CONFIG_GPIO, /*!< added to help user use GPIO mode */
IOMUX_CONFIG_SION = 0x1 << 4, /*!< used as LOOPBACK:MUX SION bit */
} iomux_pin_cfg_t;
/* various IOMUX pad functions */
typedef enum iomux_pad_config {
PAD_CTL_SRE_SLOW = 0x0 << 0, /* Slow slew rate */
PAD_CTL_SRE_FAST = 0x1 << 0, /* Fast slew rate */
PAD_CTL_DRV_LOW = 0x0 << 1, /* Low drive strength */
PAD_CTL_DRV_MEDIUM = 0x1 << 1, /* Medium drive strength */
PAD_CTL_DRV_HIGH = 0x2 << 1, /* High drive strength */
PAD_CTL_DRV_MAX = 0x3 << 1, /* Max drive strength */
PAD_CTL_ODE_OPENDRAIN_NONE = 0x0 << 3, /* Opendrain disable */
PAD_CTL_ODE_OPENDRAIN_ENABLE = 0x1 << 3,/* Opendrain enable */
PAD_CTL_100K_PD = 0x0 << 4, /* 100Kohm pulldown */
PAD_CTL_47K_PU = 0x1 << 4, /* 47Kohm pullup */
PAD_CTL_100K_PU = 0x2 << 4, /* 100Kohm pullup */
PAD_CTL_22K_PU = 0x3 << 4, /* 22Kohm pullup */
PAD_CTL_PUE_KEEPER = 0x0 << 6, /* enable pulldown */
PAD_CTL_PUE_PULL = 0x1 << 6, /* enable pullup */
PAD_CTL_PKE_NONE = 0x0 << 7, /* Disable pullup/pulldown */
PAD_CTL_PKE_ENABLE = 0x1 << 7, /* Enable pullup/pulldown */
PAD_CTL_HYS_NONE = 0x0 << 8, /* Hysteresis disabled */
PAD_CTL_HYS_ENABLE = 0x1 << 8, /* Hysteresis enabled */
PAD_CTL_DDR_INPUT_CMOS = 0x0 << 9,/* DDR input CMOS */
PAD_CTL_DDR_INPUT_DDR = 0x1 << 9,/* DDR input DDR */
PAD_CTL_DRV_VOT_LOW = 0x0 << 13, /* Low voltage mode */
PAD_CTL_DRV_VOT_HIGH = 0x1 << 13,/* High voltage mode */
} iomux_pad_config_t;
/* various IOMUX input functions */
typedef enum iomux_input_config {
INPUT_CTL_PATH0 = 0x0,
INPUT_CTL_PATH1,
INPUT_CTL_PATH2,
INPUT_CTL_PATH3,
INPUT_CTL_PATH4,
INPUT_CTL_PATH5,
INPUT_CTL_PATH6,
INPUT_CTL_PATH7,
} iomux_input_config_t;
void mxc_request_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t config);
void mxc_free_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t config);
void mxc_iomux_set_pad(iomux_pin_name_t pin, u32 config);
unsigned int mxc_iomux_get_pad(iomux_pin_name_t pin);
void mxc_iomux_set_input(iomux_input_select_t input, u32 config);
#endif /* __MACH_MX5_IOMUX_H__ */
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