mirror of
https://github.com/espressif/esp-idf.git
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54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
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/*
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* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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// The HAL layer for RTC CNTL (common part)
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#include "soc/soc_caps.h"
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#include "soc/lldesc.h"
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#include "hal/dma_types.h"
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#include "hal/rtc_hal.h"
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#include "hal/assert.h"
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#include "esp_attr.h"
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#define RTC_CNTL_HAL_LINK_BUF_SIZE_MIN (SOC_RTC_CNTL_CPU_PD_DMA_BLOCK_SIZE) /* The minimum size of dma link buffer */
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typedef struct rtc_cntl_link_buf_conf {
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uint32_t cfg[4]; /* 4 word for dma link buffer configuration */
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} rtc_cntl_link_buf_conf_t;
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void * rtc_cntl_hal_dma_link_init(void *elem, void *buff, int size, void *next)
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{
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HAL_ASSERT(elem != NULL);
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HAL_ASSERT(buff != NULL);
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HAL_ASSERT(size >= RTC_CNTL_HAL_LINK_BUF_SIZE_MIN);
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lldesc_t *plink = (lldesc_t *)elem;
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plink->eof = next ? 0 : 1;
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plink->owner = DMA_DESCRIPTOR_BUFFER_OWNER_DMA;
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plink->size = size >> 4; /* in unit of 16 bytes */
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plink->length = size >> 4;
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plink->buf = buff;
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plink->offset = 0;
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plink->sosf = 0;
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STAILQ_NEXT(plink, qe) = next;
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return (void *)plink;
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}
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#if SOC_PM_SUPPORT_CPU_PD
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void rtc_cntl_hal_enable_cpu_retention(void *addr)
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{
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// TODO: IDF-5718 has removed the retention feature
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}
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void IRAM_ATTR rtc_cntl_hal_disable_cpu_retention(void *addr)
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{
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// TODO: IDF-5718 has removed the retention feature
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}
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#endif // SOC_PM_SUPPORT_CPU_PD
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