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/**
* @file
*
* @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 */
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