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Diffstat (limited to 'bsps/arm/tms570/include/bsp/tms570-pinmux.h')
| -rw-r--r-- | bsps/arm/tms570/include/bsp/tms570-pinmux.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/bsps/arm/tms570/include/bsp/tms570-pinmux.h b/bsps/arm/tms570/include/bsp/tms570-pinmux.h new file mode 100644 index 0000000000..8b93c66bfa --- /dev/null +++ b/bsps/arm/tms570/include/bsp/tms570-pinmux.h @@ -0,0 +1,137 @@ +/** + * @file tms570-pinmux.h + * + * @ingroup tms570 + * + * @brief I/O Multiplexing Module (IOMM) basic support + */ + +/* + * Copyright (c) 2015 Premysl Houdek <kom541000@gmail.com> + * + * Google Summer of Code 2014 at + * Czech Technical University in Prague + * Zikova 1903/4 + * 166 36 Praha 6 + * Czech Republic + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifndef LIBBSP_ARM_TMS570_PINMUX_H +#define LIBBSP_ARM_TMS570_PINMUX_H + +#ifndef ASM +#include <bsp/tms570.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + + +#define TMS570_PIN_NUM_SHIFT 0 +#define TMS570_PIN_NUM_MASK 0x000007ff + +/* + * Request clear of interconnection in setup + * to ensure that previous peripheral to pin + * connection is not enabled in parallel to other one. + * Mask is ored with pin number in such list. + */ +#define TMS570_PIN_CLEAR_RQ_MASK 0x00000800 + +#define TMS570_PIN_FNC_SHIFT 12 +#define TMS570_PIN_FNC_MASK 0x0000f000 + +#define TMS570_PIN_NUM_FNC_MASK 0x0000ffff + +#define TMS570_PIN_IN_ALT_SHIFT 16 +#define TMS570_PIN_IN_ALT_MASK 0xffff0000 + +#define TMS570_PIN_FNC_AUTO (-1) + +#define TMS570_PIN_AND_FNC(pin, fnc) \ + ((pin) | ((fnc) << TMS570_PIN_FNC_SHIFT)) + +#define TMS570_PIN_WITH_IN_ALT(pin_num_and_fnc, pin_in_alt_num_and_fnc) \ + ((pin_num_and_fnc) | ((pin_in_alt_num_and_fnc) << TMS570_PIN_IN_ALT_SHIFT)) + +#define TMS570_BALL_WITH_MMR(mmrx, pos) \ + ((pos) | ((mmrx) << 2)) + +/* Generic functions select pin to peripheral connection */ + +void tms570_bsp_pin_set_function(int pin_num, int pin_fnc); + +void tms570_bsp_pin_clear_function(int pin_num, int pin_fnc); + +void tms570_bsp_pin_config_one(uint32_t pin_num_and_fnc); + +void tms570_bsp_pinmmr_config(const uint32_t *pinmmr_values, int reg_start, int reg_count); + +static inline void +tms570_bsp_pin_to_pinmmrx(volatile uint32_t **pinmmrx, unsigned int *pin_shift, + int pin_num) +{ + pin_num = (pin_num & TMS570_PIN_NUM_MASK) >> TMS570_PIN_NUM_SHIFT; + *pinmmrx = &TMS570_IOMM.PINMUX.PINMMR0 + (pin_num >> 2); + *pin_shift = (pin_num & 0x3)*8; +} + +#define TMS570_PINMMR_REG_SINGLE_VAL_ACTION(reg, pin) \ + (((((pin) & TMS570_PIN_NUM_MASK) >> 2 != (reg)) || ((pin) & TMS570_PIN_CLEAR_RQ_MASK))? 0: \ + 1 << ((((pin) & TMS570_PIN_FNC_MASK) >> TMS570_PIN_FNC_SHIFT) + \ + ((pin) & 3) * 8) \ + ) + +#define TMS570_PINMMR_REG_VAL_ACTION(reg, pin) \ + TMS570_PINMMR_REG_SINGLE_VAL_ACTION(reg, pin) | \ + ((pin) & TMS570_PIN_IN_ALT_MASK? \ + TMS570_PINMMR_REG_SINGLE_VAL_ACTION(reg, (pin) >> TMS570_PIN_IN_ALT_SHIFT ): \ + 0) | + +/** + * Macro which computes value for PINMMRx register from pin list + * which is defined as macro calling action macro for each pin + * + * @param reg PINMMR register number (0 .. 30 for TMS570LS3137) + * @param pin_list declared as macro with parameters + * \c per_pin_action and \c common_arg which expands + * to list of \c per_pin_action(\c common_arg, \c TMS570_BALL_xx_function) + * + * @retval number which represents connections which should be enabled + * in given PINMMR register. Pin setup for other registers than specified + * are ignored + */ +#define TMS570_PINMMR_REG_VAL(reg, pin_list) \ + pin_list(TMS570_PINMMR_REG_VAL_ACTION, reg) 0 + +#define TMS570_PINMMR_COMA_LIST_ACTION(reg, pin) \ + (pin), + +/** + * Macro which generates list of pin and function specification from + * from pin list which is defined as macro calling action macro for each pin + * + * @param pin_list declared as macro with parameters + * \c per_pin_action and \c common_arg which expands + * to list of \c per_pin_action(\c common_arg, \c TMS570_BALL_xx_function) + * + * @retval list of coma separated pin+function combined values which is terminated by coma + * at the end + */ +#define TMS570_PINMMR_COMA_LIST(pin_list) \ + pin_list(TMS570_PINMMR_COMA_LIST_ACTION, 0) + + +#endif + +/** @} */ + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_ARM_TMS570_IRQ_H */ |