mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// The HAL layer for RTC CNTL (common part)
|
|
|
|
#include "hal/rtc_hal.h"
|
|
#include "soc/soc_caps.h"
|
|
#include "esp32h2/rom/lldesc.h"
|
|
#include "esp_attr.h"
|
|
|
|
#define RTC_CNTL_HAL_LINK_BUF_SIZE_MIN (SOC_RTC_CNTL_CPU_PD_DMA_BLOCK_SIZE) /* The minimum size of dma link buffer */
|
|
|
|
typedef struct rtc_cntl_link_buf_conf {
|
|
uint32_t cfg[4]; /* 4 word for dma link buffer configuration */
|
|
} rtc_cntl_link_buf_conf_t;
|
|
|
|
void * rtc_cntl_hal_dma_link_init(void *elem, void *buff, int size, void *next)
|
|
{
|
|
assert(elem != NULL);
|
|
assert(buff != NULL);
|
|
assert(size >= RTC_CNTL_HAL_LINK_BUF_SIZE_MIN);
|
|
|
|
lldesc_t *plink = (lldesc_t *)elem;
|
|
|
|
plink->eof = next ? 0 : 1;
|
|
plink->owner = 1;
|
|
plink->size = size >> 4; /* in unit of 16 bytes */
|
|
plink->length = size >> 4;
|
|
plink->buf = buff;
|
|
plink->offset = 0;
|
|
plink->sosf = 0;
|
|
STAILQ_NEXT(plink, qe) = next;
|
|
return (void *)plink;
|
|
}
|
|
|
|
void rtc_cntl_hal_enable_cpu_retention(void *addr)
|
|
{
|
|
if (addr) {
|
|
lldesc_t *plink = (lldesc_t *)addr;
|
|
|
|
/* dma link buffer configure */
|
|
rtc_cntl_link_buf_conf_t *pbuf = (rtc_cntl_link_buf_conf_t *)plink->buf;
|
|
pbuf->cfg[0] = 0;
|
|
pbuf->cfg[1] = 0;
|
|
pbuf->cfg[2] = 0;
|
|
pbuf->cfg[3] = (uint32_t)-1;
|
|
|
|
rtc_cntl_ll_enable_cpu_retention((uint32_t)addr);
|
|
}
|
|
}
|