1 /*
2 * Copyright (c) 2015, Freescale Semiconductor, Inc.
3 * Copyright 2016-2019 NXP
4 * All rights reserved.
5 *
6 * SPDX-License-Identifier: BSD-3-Clause
7 */
8
9 #include "fsl_xbarb.h"
10
11 /*******************************************************************************
12 * Definitions
13 ******************************************************************************/
14
15 /* Component ID definition, used by tools. */
16 #ifndef FSL_COMPONENT_ID
17 #define FSL_COMPONENT_ID "platform.drivers.xbarb"
18 #endif
19
20 typedef union
21 {
22 uint8_t _u8[2];
23 uint16_t _u16;
24 } xbarb_u8_u16_t;
25
26 /*******************************************************************************
27 * Prototypes
28 ******************************************************************************/
29
30 /*!
31 * @brief Get the XBARB instance from peripheral base address.
32 *
33 * @param base XBARB peripheral base address.
34 * @return XBARB instance.
35 */
36 static uint32_t XBARB_GetInstance(XBARB_Type *base);
37
38 /*******************************************************************************
39 * Variables
40 ******************************************************************************/
41
42 /* Array of XBARB peripheral base address. */
43 static XBARB_Type *const s_xbarbBases[] = XBARB_BASE_PTRS;
44
45 #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
46 /* Array of XBARB clock name. */
47 static const clock_ip_name_t s_xbarbClock[] = XBARB_CLOCKS;
48 #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
49
50 /*******************************************************************************
51 * Code
52 ******************************************************************************/
53
XBARB_GetInstance(XBARB_Type * base)54 static uint32_t XBARB_GetInstance(XBARB_Type *base)
55 {
56 uint32_t instance;
57
58 /* Find the instance index from base address mappings. */
59 for (instance = 0; instance < ARRAY_SIZE(s_xbarbBases); instance++)
60 {
61 if (s_xbarbBases[instance] == base)
62 {
63 break;
64 }
65 }
66
67 assert(instance < ARRAY_SIZE(s_xbarbBases));
68
69 return instance;
70 }
71
72 /*!
73 * brief Initializes the XBARB module.
74 *
75 * This function un-gates the XBARB clock.
76 *
77 * param base XBARB peripheral address.
78 */
XBARB_Init(XBARB_Type * base)79 void XBARB_Init(XBARB_Type *base)
80 {
81 #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
82 /* Enable XBARB module clock. */
83 CLOCK_EnableClock(s_xbarbClock[XBARB_GetInstance(base)]);
84 #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
85 }
86
87 /*!
88 * brief Shuts down the XBARB module.
89 *
90 * This function disables XBARB clock.
91 *
92 * param base XBARB peripheral address.
93 */
XBARB_Deinit(XBARB_Type * base)94 void XBARB_Deinit(XBARB_Type *base)
95 {
96 #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
97 /* Disable XBARB module clock. */
98 CLOCK_DisableClock(s_xbarbClock[XBARB_GetInstance(base)]);
99 #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
100 }
101
102 /*!
103 * brief Configures a connection between the selected XBARB_IN[*] input and the XBARB_OUT[*] output signal.
104 *
105 * This function configures which XBARB input is connected to the selected XBARB output.
106 * If more than one XBARB module is available, only the inputs and outputs from the same module
107 * can be connected.
108 *
109 * param base XBARB peripheral address.
110 * param input XBARB input signal.
111 * param output XBARB output signal.
112 */
XBARB_SetSignalsConnection(XBARB_Type * base,xbar_input_signal_t input,xbar_output_signal_t output)113 void XBARB_SetSignalsConnection(XBARB_Type *base, xbar_input_signal_t input, xbar_output_signal_t output)
114 {
115 xbarb_u8_u16_t regVal;
116 uint8_t byteInReg;
117 uint8_t outputIndex = (uint8_t)output;
118
119 byteInReg = outputIndex % 2U;
120
121 regVal._u16 = XBARB_SELx(base, outputIndex);
122
123 regVal._u8[byteInReg] = (uint8_t)input;
124
125 XBARB_SELx(base, outputIndex) = regVal._u16;
126 }
127
