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/*
* Copyright 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#ifndef __MACH_MX31_IOMUX_H__
#define __MACH_MX31_IOMUX_H__
#include <linux/types.h>
#include <mach/gpio.h>
#include "mx31_pins.h"
typedef unsigned int iomux_pin_name_t;
/*!
* @file mach-mx3/iomux.h
*
* @brief I/O Muxing control definitions and functions
*
* @ingroup GPIO_MX31
*/
/*!
* various IOMUX output functions
*/
typedef enum iomux_output_config {
OUTPUTCONFIG_GPIO = 0, /*!< used as GPIO */
OUTPUTCONFIG_FUNC, /*!< used as function */
OUTPUTCONFIG_ALT1, /*!< used as alternate function 1 */
OUTPUTCONFIG_ALT2, /*!< used as alternate function 2 */
OUTPUTCONFIG_ALT3, /*!< used as alternate function 3 */
OUTPUTCONFIG_ALT4, /*!< used as alternate function 4 */
OUTPUTCONFIG_ALT5, /*!< used as alternate function 5 */
OUTPUTCONFIG_ALT6 /*!< used as alternate function 6 */
} iomux_pin_ocfg_t;
/*!
* various IOMUX input functions
*/
typedef enum iomux_input_config {
INPUTCONFIG_NONE = 0, /*!< not configured for input */
INPUTCONFIG_GPIO = 1 << 0, /*!< used as GPIO */
INPUTCONFIG_FUNC = 1 << 1, /*!< used as function */
INPUTCONFIG_ALT1 = 1 << 2, /*!< used as alternate function 1 */
INPUTCONFIG_ALT2 = 1 << 3 /*!< used as alternate function 2 */
} iomux_pin_icfg_t;
/*!
* various IOMUX pad functions
*/
typedef enum iomux_pad_config {
PAD_CTL_NOLOOPBACK = 0x0 << 9,
PAD_CTL_LOOPBACK = 0x1 << 9,
PAD_CTL_PKE_NONE = 0x0 << 8,
PAD_CTL_PKE_ENABLE = 0x1 << 8,
PAD_CTL_PUE_KEEPER = 0x0 << 7,
PAD_CTL_PUE_PUD = 0x1 << 7,
PAD_CTL_100K_PD = 0x0 << 5,
PAD_CTL_100K_PU = 0x1 << 5,
PAD_CTL_47K_PU = 0x2 << 5,
PAD_CTL_22K_PU = 0x3 << 5,
PAD_CTL_HYS_CMOS = 0x0 << 4,
PAD_CTL_HYS_SCHMITZ = 0x1 << 4,
PAD_CTL_ODE_CMOS = 0x0 << 3,
PAD_CTL_ODE_OpenDrain = 0x1 << 3,
PAD_CTL_DRV_NORMAL = 0x0 << 1,
PAD_CTL_DRV_HIGH = 0x1 << 1,
PAD_CTL_DRV_MAX = 0x2 << 1,
PAD_CTL_SRE_SLOW = 0x0 << 0,
PAD_CTL_SRE_FAST = 0x1 << 0
} iomux_pad_config_t;
/*!
* various IOMUX general purpose functions
*/
typedef enum iomux_gp_func {
MUX_PGP_FIRI = 0x1 << 0,
MUX_DDR_MODE = 0x1 << 1,
MUX_PGP_CSPI_BB = 0x1 << 2,
MUX_PGP_ATA_1 = 0x1 << 3,
MUX_PGP_ATA_2 = 0x1 << 4,
MUX_PGP_ATA_3 = 0x1 << 5,
MUX_PGP_ATA_4 = 0x1 << 6,
MUX_PGP_ATA_5 = 0x1 << 7,
MUX_PGP_ATA_6 = 0x1 << 8,
MUX_PGP_ATA_7 = 0x1 << 9,
MUX_PGP_ATA_8 = 0x1 << 10,
MUX_PGP_UH2 = 0x1 << 11,
MUX_SDCTL_CSD0_SEL = 0x1 << 12,
MUX_SDCTL_CSD1_SEL = 0x1 << 13,
MUX_CSPI1_UART3 = 0x1 << 14,
MUX_EXTDMAREQ2_MBX_SEL = 0x1 << 15,
MUX_TAMPER_DETECT_EN = 0x1 << 16,
MUX_PGP_USB_4WIRE = 0x1 << 17,
MUX_PGB_USB_COMMON = 0x1 << 18,
MUX_SDHC_MEMSTICK1 = 0x1 << 19,
MUX_SDHC_MEMSTICK2 = 0x1 << 20,
MUX_PGP_SPLL_BYP = 0x1 << 21,
MUX_PGP_UPLL_BYP = 0x1 << 22,
MUX_PGP_MSHC1_CLK_SEL = 0x1 << 23,
MUX_PGP_MSHC2_CLK_SEL = 0x1 << 24,
MUX_CSPI3_UART5_SEL = 0x1 << 25,
MUX_PGP_ATA_9 = 0x1 << 26,
MUX_PGP_USB_SUSPEND = 0x1 << 27,
MUX_PGP_USB_OTG_LOOPBACK = 0x1 << 28,
MUX_PGP_USB_HS1_LOOPBACK = 0x1 << 29,
MUX_PGP_USB_HS2_LOOPBACK = 0x1 << 30,
MUX_CLKO_DDR_MODE = 0x1 << 31,
} iomux_gp_func_t;
/*!
* This function is used to configure a pin through the IOMUX module.
*
* @param pin a pin number as defined in \b #iomux_pin_name_t
* @param out an output function as defined in \b #iomux_pin_ocfg_t
* @param in an input function as defined in \b #iomux_pin_icfg_t
* @return 0 if successful; Non-zero otherwise
*/
int iomux_config_mux(iomux_pin_name_t pin, iomux_pin_ocfg_t out,
iomux_pin_icfg_t in);
/*!
* This function configures the pad value for a IOMUX pin.
*
* @param pin a pin number as defined in \b #iomux_pins
* @param config ORed value of elements defined in \b #iomux_pad_config_t
*/
void iomux_config_pad(iomux_pin_name_t pin, __u32 config);
/*!
* This function enables/disables the general purpose function for a particular
* signal.
*
* @param gp one signal as defined in \b #iomux_gp_func_t
* @param en \b #true to enable; \b #false to disable
*/
void iomux_config_gpr(iomux_gp_func_t gp, bool en);
/*!
* Request ownership for an IO pin. This function has to be the first one
* being called before that pin is used. The caller has to check the
* return value to make sure it returns 0.
*
* @param pin a name defined by \b iomux_pin_name_t
* @param out an output function as defined in \b #iomux_pin_ocfg_t
* @param in an input function as defined in \b #iomux_pin_icfg_t
*
* @return 0 if successful; Non-zero otherwise
*/
int mxc_request_iomux(iomux_pin_name_t pin, iomux_pin_ocfg_t out,
iomux_pin_icfg_t in);
/*!
* Release ownership for an IO pin
*
* @param pin a name defined by \b iomux_pin_name_t
* @param out an output function as defined in \b #iomux_pin_ocfg_t
* @param in an input function as defined in \b #iomux_pin_icfg_t
*/
void mxc_free_iomux(iomux_pin_name_t pin, iomux_pin_ocfg_t out,
iomux_pin_icfg_t in);
/*!
* This function enables/disables the general purpose function for a particular
* signal.
*
* @param gp one signal as defined in \b #iomux_gp_func_t
* @param en \b #true to enable; \b #false to disable
*/
void mxc_iomux_set_gpr(iomux_gp_func_t gp, bool en);
/*!
* This function configures the pad value for a IOMUX pin.
*
* @param pin a pin number as defined in \b #iomux_pin_name_t
* @param config the ORed value of elements defined in \b #iomux_pad_config_t
*/
void mxc_iomux_set_pad(iomux_pin_name_t pin, u32 config);
#endif
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