1 /*
2  * Copyright (c) 2019 - 2023, Nordic Semiconductor ASA
3  * All rights reserved.
4  *
5  * SPDX-License-Identifier: BSD-3-Clause
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright notice, this
11  *    list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * 3. Neither the name of the copyright holder nor the names of its
18  *    contributors may be used to endorse or promote products derived from this
19  *    software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31  * POSSIBILITY OF SUCH DAMAGE.
32  */
33 
34 #include <nrfx.h>
35 
36 #if NRFX_CHECK(NRFX_USBREG_ENABLED)
37 
38 #include <nrfx_usbreg.h>
39 
40 static nrfx_usbreg_event_handler_t m_usbevt_handler;
41 
nrfx_usbreg_handler_get(void)42 nrfx_usbreg_event_handler_t nrfx_usbreg_handler_get(void)
43 {
44     return m_usbevt_handler;
45 }
46 
nrfx_usbreg_init(nrfx_usbreg_config_t const * p_config)47 void nrfx_usbreg_init(nrfx_usbreg_config_t const * p_config)
48 {
49     NRFX_ASSERT(p_config != NULL);
50     NRFX_ASSERT(p_config->handler != NULL);
51 
52     nrfx_usbreg_uninit();
53     m_usbevt_handler = p_config->handler;
54     nrf_usbreg_event_clear(NRF_USBREGULATOR, NRF_USBREG_EVENT_USBDETECTED);
55     nrf_usbreg_event_clear(NRF_USBREGULATOR, NRF_USBREG_EVENT_USBPWRRDY);
56     nrf_usbreg_event_clear(NRF_USBREGULATOR, NRF_USBREG_EVENT_USBREMOVED);
57 
58     NRFX_IRQ_PRIORITY_SET(nrfx_get_irq_number(NRF_USBREGULATOR), p_config->irq_priority);
59     NRFX_IRQ_ENABLE(nrfx_get_irq_number(NRF_USBREGULATOR));
60 }
61 
nrfx_usbreg_enable(void)62 void nrfx_usbreg_enable(void)
63 {
64     nrf_usbreg_int_enable(NRF_USBREGULATOR, NRF_USBREG_INT_USBDETECTED |
65                                             NRF_USBREG_INT_USBREMOVED  |
66                                             NRF_USBREG_INT_USBPWRRDY);
67 }
68 
nrfx_usbreg_disable(void)69 void nrfx_usbreg_disable(void)
70 {
71     nrf_usbreg_int_disable(NRF_USBREGULATOR, NRF_USBREG_INT_USBDETECTED |
72                                              NRF_USBREG_INT_USBREMOVED  |
73                                              NRF_USBREG_INT_USBPWRRDY);
74 }
75 
nrfx_usbreg_uninit(void)76 void nrfx_usbreg_uninit(void)
77 {
78     nrfx_usbreg_disable();
79     NRFX_IRQ_DISABLE(nrfx_get_irq_number(NRF_USBREGULATOR));
80     m_usbevt_handler = NULL;
81 }
82 
nrfx_usbreg_irq_handler(void)83 void nrfx_usbreg_irq_handler(void)
84 {
85     if (nrf_usbreg_event_check(NRF_USBREGULATOR, NRF_USBREG_EVENT_USBDETECTED))
86     {
87         nrf_usbreg_event_clear(NRF_USBREGULATOR, NRF_USBREG_EVENT_USBDETECTED);
88         m_usbevt_handler(NRFX_USBREG_EVT_DETECTED);
89     }
90     if (nrf_usbreg_event_check(NRF_USBREGULATOR, NRF_USBREG_EVENT_USBREMOVED))
91     {
92         nrf_usbreg_event_clear(NRF_USBREGULATOR, NRF_USBREG_EVENT_USBREMOVED);
93         m_usbevt_handler(NRFX_USBREG_EVT_REMOVED);
94     }
95     if (nrf_usbreg_event_check(NRF_USBREGULATOR, NRF_USBREG_EVENT_USBPWRRDY))
96     {
97         nrf_usbreg_event_clear(NRF_USBREGULATOR, NRF_USBREG_EVENT_USBPWRRDY);
98         m_usbevt_handler(NRFX_USBREG_EVT_READY);
99     }
100 }
101 
102 #endif // NRFX_CHECK(NRFX_USBREG_ENABLED)
103