/* * (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__ */