diff options
Diffstat (limited to 'include/asm-arm/arch-mx50/iomux.h')
| -rw-r--r-- | include/asm-arm/arch-mx50/iomux.h | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/include/asm-arm/arch-mx50/iomux.h b/include/asm-arm/arch-mx50/iomux.h new file mode 100644 index 0000000..87e73ea --- /dev/null +++ b/include/asm-arm/arch-mx50/iomux.h @@ -0,0 +1,230 @@ +/* + * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved. + * + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef __MACH_MX50_IOMUX_H__ +#define __MACH_MX50_IOMUX_H__ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/mx50.h> +#include <asm/arch/mx50_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, + PAD_CTL_SRE_FAST = 0x1 << 0, + PAD_CTL_DRV_LOW = 0x0 << 1, + PAD_CTL_DRV_MEDIUM = 0x1 << 1, + PAD_CTL_DRV_HIGH = 0x2 << 1, + PAD_CTL_DRV_MAX = 0x3 << 1, + PAD_CTL_ODE_OPENDRAIN_NONE = 0x0 << 3, + PAD_CTL_ODE_OPENDRAIN_ENABLE = 0x1 << 3, + PAD_CTL_100K_PD = 0x0 << 4, + PAD_CTL_47K_PU = 0x1 << 4, + PAD_CTL_100K_PU = 0x2 << 4, + PAD_CTL_22K_PU = 0x3 << 4, + PAD_CTL_PUE_KEEPER = 0x0 << 6, + PAD_CTL_PUE_PULL = 0x1 << 6, + PAD_CTL_PKE_NONE = 0x0 << 7, + PAD_CTL_PKE_ENABLE = 0x1 << 7, + PAD_CTL_HYS_NONE = 0x0 << 8, + PAD_CTL_HYS_ENABLE = 0x1 << 8, + PAD_CTL_DDR_INPUT_CMOS = 0x0 << 9, + PAD_CTL_DDR_INPUT_DDR = 0x1 << 9, + PAD_CTL_DRV_VOT_LOW = 0x0 << 13, + PAD_CTL_DRV_VOT_HIGH = 0x1 << 13, +} iomux_pad_config_t; + +/* various IOMUX input select register index */ +typedef enum iomux_input_select { + MUX_IN_AUDMUX_P4_INPUT_DA_AMX_SELECT_I = 0, + MUX_IN_AUDMUX_P4_INPUT_DB_AMX_SELECT_I, + MUX_IN_AUDMUX_P4_INPUT_RXCLK_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P4_INPUT_RXFS_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P4_INPUT_TXCLK_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P4_INPUT_TXFS_AMX_SELECT_INPUT, + MUX_IN_CCM_PLL1_BYPASS_CLK_SELECT_INPUT, + MUX_IN_CCM_PLL2_BYPASS_CLK_SELECT_INPUT, + MUX_IN_CCM_PLL3_BYPASS_CLK_SELECT_INPUT, + MUX_IN_CSPI_IPP_IND_DATAREADY_B_SELECT_INPUT, + MUX_IN_CSPI_IPP_IND_SS1_B_SELECT_INPUT, + MUX_IN_CSPI_IPP_IND_SS2_B_SELECT_INPUT, + MUX_IN_CSPI_IPP_IND_SS3_B_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_BUSY_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_0_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_1_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_2_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_3_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_4_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_5_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_6_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_7_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_8_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_9_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_10_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_11_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_12_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_13_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_14_SELECT_INPUT, + MUX_IN_ELCDIF_LCDIF_RXDATA_15_SELECT_INPUT, + MUX_IN_ELCDIF_VSYNC_I_SELECT_INPUT, + MUX_IN_ESDHC2_IPP_CARD_DET_SELECT_INPUT, + MUX_IN_ESDHC2_IPP_WP_ON_SELECT_INPUT, + MUX_IN_ESDHC4_IPP_CARD_CLK_IN_SELECT_INPUT, + MUX_IN_ESDHC4_IPP_CMD_IN_SELECT_INPUT, + MUX_IN_ESDHC4_IPP_DAT0_IN_SELECT_INPUT, + MUX_IN_ESDHC4_IPP_DAT1_IN_SELECT_INPUT, + MUX_IN_ESDHC4_IPP_DAT2_IN_SELECT_INPUT, + MUX_IN_ESDHC4_IPP_DAT3_IN_SELECT_INPUT, + MUX_IN_ESDHC4_IPP_DAT4_IN_SELECT_INPUT, + MUX_IN_ESDHC4_IPP_DAT5_IN_SELECT_INPUT, + MUX_IN_ESDHC4_IPP_DAT6_IN_SELECT_INPUT, + MUX_IN_ESDHC4_IPP_DAT7_IN_SELECT_INPUT, + MUX_IN_FEC_FEC_COL_SELECT_INPUT, + MUX_IN_FEC_FEC_MDI_SELECT_INPUT, + MUX_IN_FEC_FEC_RDATA_0_SELECT_INPUT, + MUX_IN_FEC_FEC_RDATA_1_SELECT_INPUT, + MUX_IN_FEC_FEC_RX_CLK_SELECT_INPUT, + MUX_IN_FEC_FEC_RX_DV_SELECT_INPUT, + MUX_IN_FEC_FEC_RX_ER_SELECT_INPUT, + MUX_IN_FEC_FEC_TX_CLK_SELECT_INPUT, + MUX_IN_KPP_IPP_IND_COL_4_SELECT_INPUT, + MUX_IN_KPP_IPP_IND_COL_5_SELECT_INPUT, + MUX_IN_KPP_IPP_IND_COL_6_SELECT_INPUT, + MUX_IN_KPP_IPP_IND_COL_7_SELECT_INPUT, + MUX_IN_KPP_IPP_IND_ROW_4_SELECT_INPUT, + MUX_IN_KPP_IPP_IND_ROW_5_SELECT_INPUT, + MUX_IN_KPP_IPP_IND_ROW_6_SELECT_INPUT, + MUX_IN_KPP_IPP_IND_ROW_7_SELECT_INPUT, + MUX_IN_RAWNAND_U_GPMI_INPUT_GPMI_DQS_IN_SELECT_INPUT, + MUX_IN_RAWNAND_U_GPMI_INPUT_GPMI_RDY0_IN_SELECT_INPUT, + MUX_IN_SDMA_EVENTS_14_SELECT_INPUT, + MUX_IN_SDMA_EVENTS_15_SELECT_INPUT, + MUX_IN_UART1_IPP_UART_RTS_B_SELECT_INPUT, + MUX_IN_UART1_IPP_UART_RXD_MUX_SELECT_INPUT, + MUX_IN_UART2_IPP_UART_RTS_B_SELECT_INPUT, + MUX_IN_UART2_IPP_UART_RXD_MUX_SELECT_INPUT, + MUX_IN_UART3_IPP_UART_RTS_B_SELECT_INPUT, + MUX_IN_UART3_IPP_UART_RXD_MUX_SELECT_INPUT, + MUX_IN_UART4_IPP_UART_RTS_B_SELECT_INPUT, + MUX_IN_UART4_IPP_UART_RXD_MUX_SELECT_INPUT, + MUX_IN_UART5_IPP_UART_RTS_B_SELECT_INPUT, + MUX_IN_UART5_IPP_UART_RXD_MUX_SELECT_INPUT, + MUX_IN_USBOH1_IPP_IND_OTG_OC_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_0_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_1_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_2_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_3_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_4_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_5_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_6_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_7_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_8_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_9_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_10_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_11_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_12_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_13_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_14_SELECT_INPUT, + MUX_IN_WEIMV2_IPP_IND_READ_DATA_15_SELECT_INPUT, + MUX_INPUT_NUM_MUX, +} iomux_input_select_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; + +struct mxc_iomux_pin_cfg { + iomux_pin_name_t pin; + u8 mux_mode; + u16 pad_cfg; + u8 in_select; + u8 in_mode; +}; + +/* + * 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 config config as defined in \b #iomux_pin_ocfg_t + * + * @return 0 if successful; Non-zero otherwise + */ +int mxc_request_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t config); + +/* + * Release ownership for an IO pin + * + * @param pin a name defined by \b iomux_pin_name_t + * @param config config as defined in \b #iomux_pin_ocfg_t + */ +void mxc_free_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t config); + +/* + * 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); + +/* + * This function gets the current pad value for a IOMUX pin. + * + * @param pin a pin number as defined in \b #iomux_pin_name_t + * @return current pad value + */ +unsigned int mxc_iomux_get_pad(iomux_pin_name_t pin); + +/* + * This function configures input path. + * + * @param input index of input select register as defined in + * \b #iomux_input_select_t + * @param config the binary value of elements defined in \b #iomux_input_config_t + */ +void mxc_iomux_set_input(iomux_input_select_t input, u32 config); + +#endif /* __MACH_MX50_IOMUX_H__ */ |