1 /******************************************************************************
2 *
3 * Copyright (C) 2022-2023 Maxim Integrated Products, Inc. (now owned by
4 * Analog Devices, Inc.),
5 * Copyright (C) 2023-2024 Analog Devices, Inc.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 ******************************************************************************/
20
21 #include <stdio.h>
22 #include "lpcmp.h"
23 #include "lpcmp_regs.h"
24 #include "lpcmp_reva.h"
25 #include "mxc_device.h"
26 #include "mxc_errors.h"
27 #include "mxc_assert.h"
28 #include "mxc_sys.h"
29 #include "mcr_regs.h"
30 #include "mxc_lock.h"
31 #include "mxc_pins.h"
32
33 static int init = 0;
34 static const mxc_lpcmp_ctrl_reg_t lpcmp_ctrl_regs[] = { &MXC_MCR->cmp_ctrl, &MXC_LPCMP->ctrl[0],
35 &MXC_LPCMP->ctrl[1], &MXC_LPCMP->ctrl[2] };
36
initGPIOForComp(mxc_lpcmp_cmpsel_t cmp)37 static void initGPIOForComp(mxc_lpcmp_cmpsel_t cmp)
38 {
39 switch (cmp) {
40 case MXC_LPCMP_CMP0:
41 MXC_GPIO_Config(&gpio_cfg_cmp0);
42 break;
43 case MXC_LPCMP_CMP1:
44 MXC_GPIO_Config(&gpio_cfg_cmp1);
45 break;
46 case MXC_LPCMP_CMP2:
47 MXC_GPIO_Config(&gpio_cfg_cmp2);
48 break;
49 case MXC_LPCMP_CMP3:
50 MXC_GPIO_Config(&gpio_cfg_cmp3);
51 break;
52 default:
53 break;
54 }
55 }
56
MXC_LPCMP_Init(mxc_lpcmp_cmpsel_t cmp)57 int MXC_LPCMP_Init(mxc_lpcmp_cmpsel_t cmp)
58 {
59 int ret;
60
61 initGPIOForComp(cmp);
62
63 if (cmp > MXC_LPCMP_CMP3) {
64 return E_BAD_PARAM;
65 }
66
67 MXC_SYS_ClockEnable(MXC_SYS_PERIPH_CLOCK_LPCOMP);
68
69 if ((ret = MXC_LPCMP_RevA_Init(lpcmp_ctrl_regs[cmp])) == E_NO_ERROR) {
70 init++;
71 }
72
73 return ret;
74 }
75
MXC_LPCMP_Shutdown(mxc_lpcmp_cmpsel_t cmp)76 int MXC_LPCMP_Shutdown(mxc_lpcmp_cmpsel_t cmp)
77 {
78 if (cmp > MXC_LPCMP_CMP3) {
79 return E_BAD_PARAM;
80 }
81
82 init--;
83 if (init == 0) {
84 MXC_SYS_ClockDisable(MXC_SYS_PERIPH_CLOCK_LPCOMP);
85 }
86
87 return MXC_LPCMP_RevA_Shutdown(lpcmp_ctrl_regs[cmp]);
88 }
89
MXC_LPCMP_EnableInt(mxc_lpcmp_cmpsel_t cmp,mxc_lpcmp_polarity_t pol)90 int MXC_LPCMP_EnableInt(mxc_lpcmp_cmpsel_t cmp, mxc_lpcmp_polarity_t pol)
91 {
92 if (cmp > MXC_LPCMP_CMP3) {
93 return E_BAD_PARAM;
94 }
95
96 MXC_LPCMP_ClearFlags(cmp);
97 MXC_LPCMP_SelectPolarity(cmp, pol);
98
99 return MXC_LPCMP_RevA_EnableInt(lpcmp_ctrl_regs[cmp]);
100 }
101
MXC_LPCMP_DisableInt(mxc_lpcmp_cmpsel_t cmp)102 int MXC_LPCMP_DisableInt(mxc_lpcmp_cmpsel_t cmp)
103 {
104 if (cmp > MXC_LPCMP_CMP3) {
105 return E_BAD_PARAM;
106 }
107
108 return MXC_LPCMP_RevA_DisableInt(lpcmp_ctrl_regs[cmp]);
109 }
110
MXC_LPCMP_GetFlags(mxc_lpcmp_cmpsel_t cmp)111 int MXC_LPCMP_GetFlags(mxc_lpcmp_cmpsel_t cmp)
112 {
113 if (cmp > MXC_LPCMP_CMP3) {
114 return E_BAD_PARAM;
115 }
116
117 return MXC_LPCMP_RevA_GetFlags(lpcmp_ctrl_regs[cmp]);
118 }
119
MXC_LPCMP_ClearFlags(mxc_lpcmp_cmpsel_t cmp)120 int MXC_LPCMP_ClearFlags(mxc_lpcmp_cmpsel_t cmp)
121 {
122 if (cmp > MXC_LPCMP_CMP3) {
123 return E_BAD_PARAM;
124 }
125
126 return MXC_LPCMP_RevA_ClearFlags(lpcmp_ctrl_regs[cmp]);
127 }
128
MXC_LPCMP_SelectPolarity(mxc_lpcmp_cmpsel_t cmp,mxc_lpcmp_polarity_t pol)129 int MXC_LPCMP_SelectPolarity(mxc_lpcmp_cmpsel_t cmp, mxc_lpcmp_polarity_t pol)
130 {
131 if (cmp > MXC_LPCMP_CMP3) {
132 return E_BAD_PARAM;
133 }
134
135 return MXC_LPCMP_RevA_SelectPolarity(lpcmp_ctrl_regs[cmp], pol);
136 }
137
