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Diffstat (limited to 'arch/arm/mach-mx51/iomux.h')
| -rw-r--r-- | arch/arm/mach-mx51/iomux.h | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/arch/arm/mach-mx51/iomux.h b/arch/arm/mach-mx51/iomux.h new file mode 100644 index 000000000000..e314ab26ac9b --- /dev/null +++ b/arch/arm/mach-mx51/iomux.h @@ -0,0 +1,246 @@ +/* + * Copyright 2008-2009 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_MX51_IOMUX_H__ +#define __MACH_MX51_IOMUX_H__ + +#include <linux/types.h> +#include <mach/gpio.h> +#include "mx51_pins.h" + +/*! + * @file mach-mx51/iomux.h + * + * @brief I/O Muxing control definitions and functions + * + * @ingroup GPIO_MX51 + */ + +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_TXCLK_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P4_INPUT_TXFS_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P5_INPUT_DA_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P5_INPUT_DB_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P5_INPUT_RXCLK_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P5_INPUT_RXFS_AMX_SELECT, + MUX_IN_AUDMUX_P5_INPUT_TXCLK_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P5_INPUT_TXFS_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P6_INPUT_DA_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P6_INPUT_DB_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P6_INPUT_RXCLK_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P6_INPUT_RXFS_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P6_INPUT_TXCLK_AMX_SELECT_INPUT, + MUX_IN_AUDMUX_P6_INPUT_TXFS_AMX_SELECT_INPUT, + MUX_IN_CCM_IPP_DI_CLK_SELECT_INPUT, + /* TO2 */ + MUX_IN_CCM_IPP_DI1_CLK_SELECT_INPUT, + MUX_IN_CCM_PLL1_BYPASS_CLK_SELECT_INPUT, + MUX_IN_CCM_PLL2_BYPASS_CLK_SELECT_INPUT, + MUX_IN_CSPI_IPP_CSPI_CLK_IN_SELECT_INPUT, + MUX_IN_CSPI_IPP_IND_MISO_SELECT_INPUT, + MUX_IN_CSPI_IPP_IND_MOSI_SELECT_INPUT, + MUX_IN_CSPI_IPP_IND_SS_B_1_SELECT_INPUT, + MUX_IN_CSPI_IPP_IND_SS_B_2_SELECT_INPUT, + MUX_IN_CSPI_IPP_IND_SS_B_3_SELECT_INPUT, + MUX_IN_DPLLIP1_L1T_TOG_EN_SELECT_INPUT, + /* TO2 */ + MUX_IN_ECSPI2_IPP_IND_SS_B_1_SELECT_INPUT, + MUX_IN_ECSPI2_IPP_IND_SS_B_3_SELECT_INPUT, + MUX_IN_EMI_IPP_IND_RDY_INT_SELECT_INPUT, + MUX_IN_ESDHC3_IPP_DAT0_IN_SELECT_INPUT, + MUX_IN_ESDHC3_IPP_DAT1_IN_SELECT_INPUT, + MUX_IN_ESDHC3_IPP_DAT2_IN_SELECT_INPUT, + MUX_IN_ESDHC3_IPP_DAT3_IN_SELECT_INPUT, + MUX_IN_FEC_FEC_COL_SELECT_INPUT, + MUX_IN_FEC_FEC_CRS_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_RDATA_2_SELECT_INPUT, + MUX_IN_FEC_FEC_RDATA_3_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_GPIO3_IPP_IND_G_IN_1_SELECT_INPUT, + MUX_IN_GPIO3_IPP_IND_G_IN_2_SELECT_INPUT, + MUX_IN_GPIO3_IPP_IND_G_IN_3_SELECT_INPUT, + MUX_IN_GPIO3_IPP_IND_G_IN_4_SELECT_INPUT, + MUX_IN_GPIO3_IPP_IND_G_IN_5_SELECT_INPUT, + MUX_IN_GPIO3_IPP_IND_G_IN_6_SELECT_INPUT, + MUX_IN_GPIO3_IPP_IND_G_IN_7_SELECT_INPUT, + MUX_IN_GPIO3_IPP_IND_G_IN_8_SELECT_INPUT, + /* TO2 */ + MUX_IN_GPIO3_IPP_IND_G_IN_12_SELECT_INPUT, + MUX_IN_HSC_MIPI_MIX_IPP_IND_SENS1_DATA_EN_SELECT_INPUT, + MUX_IN_HSC_MIPI_MIX_IPP_IND_SENS2_DATA_EN_SELECT_INPUT, + /* TO2 */ + MUX_IN_HSC_MIPI_MIX_PAR_VSYNC_SELECT_INPUT, + /* TO2 */ + MUX_IN_HSC_MIPI_MIX_PAR_DI_WAIT_SELECT_INPUT, + MUX_IN_HSC_MIPI_MIX_PAR_SISG_TRIG_SELECT_INPUT, + MUX_IN_I2C1_IPP_SCL_IN_SELECT_INPUT, + MUX_IN_I2C1_IPP_SDA_IN_SELECT_INPUT, + MUX_IN_I2C2_IPP_SCL_IN_SELECT_INPUT, + MUX_IN_I2C2_IPP_SDA_IN_SELECT_INPUT, + + MUX_IN_IPU_IPP_DI_0_IND_DISPB_SD_D_SELECT_INPUT, + + MUX_IN_IPU_IPP_DI_1_IND_DISPB_SD_D_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_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_USBOH3_IPP_IND_UH3_CLK_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_DATA_0_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_DATA_1_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_DATA_2_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_DATA_3_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_DATA_4_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_DATA_5_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_DATA_6_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_DATA_7_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_DIR_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_NXT_SELECT_INPUT, + MUX_IN_USBOH3_IPP_IND_UH3_STP_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_MX51_IOMUX_H__ */ |