1 /*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 *
4 * HDF is dual licensed: you can use it either under the terms of
5 * the GPL, or the BSD license, at your option.
6 * See the LICENSE file in the root of this repository for complete details.
7 */
8
9 #include "hdf_reset.h"
10 #include "gpio_if.h"
11 #include "hdf_base.h"
12
13 struct GpioBasedReset {
14 struct HdfReset base;
15 uint8_t resetHoldTime;
16 uint16_t gpioId;
17 uint8_t activeLevel;
18 };
19
ResetNoManagableReset(struct HdfReset * reset)20 static int32_t ResetNoManagableReset(struct HdfReset *reset)
21 {
22 (void)reset;
23 return HDF_FAILURE;
24 }
25
ReleaseNoManagableReset(struct HdfReset * reset)26 static void ReleaseNoManagableReset(struct HdfReset *reset)
27 {
28 if (reset != NULL) {
29 OsalMemFree(reset);
30 }
31 }
32
ResetGpioBasedReset(struct HdfReset * reset)33 static int32_t ResetGpioBasedReset(struct HdfReset *reset)
34 {
35 int ret;
36 struct GpioBasedReset *gpioBasedReset = (struct GpioBasedReset *)reset;
37 if (reset == NULL) {
38 HDF_LOGE("%s:nullptr", __func__);
39 return HDF_FAILURE;
40 }
41 ret = GpioSetDir(gpioBasedReset->gpioId, GPIO_DIR_OUT);
42 if (ret != HDF_SUCCESS) {
43 HDF_LOGE("%s: set dir fail!", __func__);
44 return ret;
45 }
46 ret = GpioWrite(gpioBasedReset->gpioId, gpioBasedReset->activeLevel);
47 if (ret != HDF_SUCCESS) {
48 HDF_LOGE("%s: write active fail! ret=%d", __func__, ret);
49 return ret;
50 }
51 OsalMSleep(gpioBasedReset->resetHoldTime);
52
53 ret = GpioWrite(gpioBasedReset->gpioId, !gpioBasedReset->activeLevel);
54 if (ret != HDF_SUCCESS) {
55 HDF_LOGE("%s: write deactivate fail! ret=%d", __func__, ret);
56 return ret;
57 }
58 return ret;
59 }
60
ReleaseGpioBasedReset(struct HdfReset * reset)61 static void ReleaseGpioBasedReset(struct HdfReset *reset)
62 {
63 if (reset != NULL) {
64 OsalMemFree(reset);
65 }
66 }
67
CreateVirtualReset(const struct HdfResetConfig * resetConfig)68 struct HdfReset *CreateVirtualReset(const struct HdfResetConfig *resetConfig)
69 {
70 struct HdfReset *result = NULL;
71 if (resetConfig == NULL) {
72 HDF_LOGE("%s:nullptr", __func__);
73 return NULL;
74 }
75 if (resetConfig->resetType == RESET_TYPE_NOT_MANAGEABLE) {
76 const static struct HdfResetOps noManagableResetOps = {.Reset = ResetNoManagableReset,
77 .Release = ReleaseNoManagableReset};
78 result = (struct HdfReset *)OsalMemCalloc(sizeof(struct HdfReset));
79 result->ops = &noManagableResetOps;
80 } else if (resetConfig->resetType == RESET_TYPE_GPIO) {
81 const static struct HdfResetOps gpioBasedResetOps = {.Reset = ResetGpioBasedReset,
82 .Release = ReleaseGpioBasedReset};
83 struct GpioBasedReset *reset = (struct GpioBasedReset *)OsalMemCalloc(sizeof(struct GpioBasedReset));
84 reset->resetHoldTime = resetConfig->resetHoldTime;
85 reset->gpioId = resetConfig->gpio.gpioId;
86 reset->activeLevel = resetConfig->gpio.activeLevel;
87 reset->base.ops = &gpioBasedResetOps;
88 result = (struct HdfReset *)reset;
89 }
90 return result;
91 }