1 /*
2 * Copyright (c) 2024 Nordic Semiconductor ASA
3 * SPDX-License-Identifier: Apache-2.0
4 */
5
6 #define DT_DRV_COMPAT nordic_nrf_vevif_task_tx
7
8 #include <zephyr/devicetree.h>
9 #include <zephyr/drivers/mbox.h>
10
11 #include <haly/nrfy_vpr.h>
12
13 #define TASKS_IDX_MAX NRF_VPR_TASKS_TRIGGER_MAX
14
15 struct mbox_vevif_task_tx_conf {
16 NRF_VPR_Type *vpr;
17 uint32_t tasks_mask;
18 uint8_t tasks;
19 };
20
vevif_task_tx_is_valid(const struct device * dev,uint32_t id)21 static inline bool vevif_task_tx_is_valid(const struct device *dev, uint32_t id)
22 {
23 const struct mbox_vevif_task_tx_conf *config = dev->config;
24
25 return ((id <= TASKS_IDX_MAX) && ((config->tasks_mask & BIT(id)) != 0U));
26 }
27
vevif_task_tx_send(const struct device * dev,uint32_t id,const struct mbox_msg * msg)28 static int vevif_task_tx_send(const struct device *dev, uint32_t id, const struct mbox_msg *msg)
29 {
30 const struct mbox_vevif_task_tx_conf *config = dev->config;
31
32 if (!vevif_task_tx_is_valid(dev, id)) {
33 return -EINVAL;
34 }
35
36 if (msg != NULL) {
37 return -EMSGSIZE;
38 }
39
40 nrfy_vpr_task_trigger(config->vpr, nrfy_vpr_trigger_task_get(id));
41
42 return 0;
43 }
44
vevif_task_tx_mtu_get(const struct device * dev)45 static int vevif_task_tx_mtu_get(const struct device *dev)
46 {
47 ARG_UNUSED(dev);
48
49 return 0;
50 }
51
vevif_task_tx_max_channels_get(const struct device * dev)52 static uint32_t vevif_task_tx_max_channels_get(const struct device *dev)
53 {
54 const struct mbox_vevif_task_tx_conf *config = dev->config;
55
56 return config->tasks;
57 }
58
59 static DEVICE_API(mbox, vevif_task_tx_driver_api) = {
60 .send = vevif_task_tx_send,
61 .mtu_get = vevif_task_tx_mtu_get,
62 .max_channels_get = vevif_task_tx_max_channels_get,
63 };
64
65 #define VEVIF_TASK_TX_DEFINE(inst) \
66 BUILD_ASSERT(DT_INST_PROP(inst, nordic_tasks) <= VPR_TASKS_TRIGGER_MaxCount, \
67 "Number of tasks exceeds maximum"); \
68 \
69 static const struct mbox_vevif_task_tx_conf conf##inst = { \
70 .vpr = (NRF_VPR_Type *)DT_INST_REG_ADDR(inst), \
71 .tasks = DT_INST_PROP(inst, nordic_tasks), \
72 .tasks_mask = DT_INST_PROP(inst, nordic_tasks_mask), \
73 }; \
74 \
75 DEVICE_DT_INST_DEFINE(inst, NULL, NULL, NULL, &conf##inst, POST_KERNEL, \
76 CONFIG_MBOX_INIT_PRIORITY, &vevif_task_tx_driver_api);
77
78 DT_INST_FOREACH_STATUS_OKAY(VEVIF_TASK_TX_DEFINE)
79
