RTEMS: bsps/arm/tms570/include/bsp/tms570-pinmux.h Source File

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tms570-pinmux.h
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1
9/*
10 * Copyright (c) 2015 Premysl Houdek <kom541000@gmail.com>
11 *
12 * Google Summer of Code 2014 at
13 * Czech Technical University in Prague
14 * Zikova 1903/4
15 * 166 36 Praha 6
16 * Czech Republic
17 *
18 * The license and distribution terms for this file may be
19 * found in the file LICENSE in this distribution or at
20 * http://www.rtems.org/license/LICENSE.
21 */
22
23#ifndef LIBBSP_ARM_TMS570_PINMUX_H
24#define LIBBSP_ARM_TMS570_PINMUX_H
25
26#ifndef ASM
27#include <bsp/tms570.h>
28
29#ifdef __cplusplus
30extern "C" {
31#endif /* __cplusplus */
32
33
34#define TMS570_PIN_NUM_SHIFT 0
35#define TMS570_PIN_NUM_MASK 0x000007ff
36
37/*
38 * Request clear of interconnection in setup
39 * to ensure that previous peripheral to pin
40 * connection is not enabled in parallel to other one.
41 * Mask is ored with pin number in such list.
42 */
43#define TMS570_PIN_CLEAR_RQ_MASK 0x00000800
44
45#define TMS570_PIN_FNC_SHIFT 12
46#define TMS570_PIN_FNC_MASK 0x0000f000
47
48#define TMS570_PIN_NUM_FNC_MASK 0x0000ffff
49
50#define TMS570_PIN_IN_ALT_SHIFT 16
51#define TMS570_PIN_IN_ALT_MASK 0xffff0000
52
53#define TMS570_PIN_FNC_AUTO (-1)
54
55#define TMS570_PIN_AND_FNC(pin, fnc) \
56 ((pin) | ((fnc) << TMS570_PIN_FNC_SHIFT))
57
58#define TMS570_PIN_WITH_IN_ALT(pin_num_and_fnc, pin_in_alt_num_and_fnc) \
59 ((pin_num_and_fnc) | ((pin_in_alt_num_and_fnc) << TMS570_PIN_IN_ALT_SHIFT))
60
61#define TMS570_BALL_WITH_MMR(mmrx, pos) \
62 ((pos) | ((mmrx) << 2))
63
64/* Generic functions select pin to peripheral connection */
65
66void tms570_bsp_pin_set_function(int pin_num, int pin_fnc);
67
68void tms570_bsp_pin_clear_function(int pin_num, int pin_fnc);
69
70void tms570_bsp_pin_config_one(uint32_t pin_num_and_fnc);
71
72void tms570_bsp_pinmmr_config(const uint32_t *pinmmr_values, int reg_start, int reg_count);
73
74static inline void
75tms570_bsp_pin_to_pinmmrx(volatile uint32_t **pinmmrx, unsigned int *pin_shift,
76 int pin_num)
77{
78 pin_num = (pin_num & TMS570_PIN_NUM_MASK) >> TMS570_PIN_NUM_SHIFT;
79 *pinmmrx = &TMS570_IOMM.PINMUX.PINMMR0 + (pin_num >> 2);
80 *pin_shift = (pin_num & 0x3)*8;
81}
82
83#define TMS570_PINMMR_REG_SINGLE_VAL_ACTION(reg, pin) \
84 (((((pin) & TMS570_PIN_NUM_MASK) >> 2 != (reg)) || ((pin) & TMS570_PIN_CLEAR_RQ_MASK))? 0: \
85 1 << ((((pin) & TMS570_PIN_FNC_MASK) >> TMS570_PIN_FNC_SHIFT) + \
86 ((pin) & 3) * 8) \
87 )
88
89#define TMS570_PINMMR_REG_VAL_ACTION(reg, pin) \
90 TMS570_PINMMR_REG_SINGLE_VAL_ACTION(reg, pin) | \
91 ((pin) & TMS570_PIN_IN_ALT_MASK? \
92 TMS570_PINMMR_REG_SINGLE_VAL_ACTION(reg, (pin) >> TMS570_PIN_IN_ALT_SHIFT ): \
93 0) |
94
108#define TMS570_PINMMR_REG_VAL(reg, pin_list) \
109 pin_list(TMS570_PINMMR_REG_VAL_ACTION, reg) 0
110
111#define TMS570_PINMMR_COMA_LIST_ACTION(reg, pin) \
112 (pin),
113
125#define TMS570_PINMMR_COMA_LIST(pin_list) \
126 pin_list(TMS570_PINMMR_COMA_LIST_ACTION, 0)
127
128
129#endif
130
133#ifdef __cplusplus
134}
135#endif /* __cplusplus */
136
137#endif /* LIBBSP_ARM_TMS570_IRQ_H */
tms570_bsp_pinmmr_config
void tms570_bsp_pinmmr_config(const uint32_t *pinmmr_values, int reg_start, int reg_count)
configure block or whole pin multiplexer
Definition: pinmux.c:161
tms570_bsp_pin_set_function
void tms570_bsp_pin_set_function(int pin_num, int pin_fnc)
select desired function of pin/ball
Definition: pinmux.c:49
tms570_bsp_pin_config_one
void tms570_bsp_pin_config_one(uint32_t pin_num_and_fnc)
configure one pin according to its function specification
Definition: pinmux.c:110
tms570_bsp_pin_clear_function
void tms570_bsp_pin_clear_function(int pin_num, int pin_fnc)
clear connection between pin and specified peripherals/function
Definition: pinmux.c:74