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https://github.com/zephyrproject-rtos/zephyr
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bace4a102d
Add a mailbox driver for VEVIF events (VPR irq). The driver can be built in either 'rx' or 'tx' configuration. The VPR sends the event, so it uses the 'tx' configuration, while the master core uses the 'rx' configuration of the driver to receive the VPR events. Signed-off-by: Jakub Zymelka <jakub.zymelka@nordicsemi.no>
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/*
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* Copyright (c) 2024 Nordic Semiconductor ASA
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT nordic_nrf_vevif_event_tx
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#include <zephyr/devicetree.h>
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#include <zephyr/drivers/mbox.h>
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#include <hal/nrf_vpr.h>
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#include <hal/nrf_vpr_csr.h>
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#include <hal/nrf_vpr_csr_vevif.h>
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#if defined(CONFIG_SOC_NRF54L15_ENGA_CPUFLPR)
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#define EVENTS_IDX_MAX 17U
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#else
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#define EVENTS_IDX_MAX NRF_VPR_EVENTS_TRIGGERED_MAX
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#endif
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#define VEVIF_EVENTS_NUM DT_INST_PROP(0, nordic_events)
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#define VEVIF_EVENTS_MASK DT_INST_PROP(0, nordic_events_mask)
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BUILD_ASSERT(DT_INST_PROP(0, nordic_events) <= NRF_VPR_EVENTS_TRIGGERED_COUNT,
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"Number of events exceeds maximum");
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static inline bool vevif_event_tx_is_valid(uint32_t id)
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{
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return (id < EVENTS_IDX_MAX) && ((VEVIF_EVENTS_MASK & BIT(id)) != 0U);
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}
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static int vevif_event_tx_send(const struct device *dev, uint32_t id, const struct mbox_msg *msg)
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{
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ARG_UNUSED(dev);
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if (!vevif_event_tx_is_valid(id)) {
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return -EINVAL;
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}
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if (msg != NULL) {
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return -ENOTSUP;
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}
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nrf_vpr_csr_vevif_events_trigger(BIT(id));
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return 0;
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}
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static int vevif_event_tx_mtu_get(const struct device *dev)
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{
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ARG_UNUSED(dev);
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return 0;
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}
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static uint32_t vevif_event_tx_max_channels_get(const struct device *dev)
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{
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ARG_UNUSED(dev);
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return VEVIF_EVENTS_NUM;
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}
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static const struct mbox_driver_api vevif_event_tx_driver_api = {
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.send = vevif_event_tx_send,
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.mtu_get = vevif_event_tx_mtu_get,
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.max_channels_get = vevif_event_tx_max_channels_get,
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};
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DEVICE_DT_INST_DEFINE(0, NULL, NULL, NULL, NULL, POST_KERNEL, CONFIG_MBOX_INIT_PRIORITY,
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&vevif_event_tx_driver_api);
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