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40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
/*
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* SPDX-FileCopyrightText: 2026 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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#include <stdint.h>
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#include "ppa_priv.h"
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#include "soc/ppa_reg.h"
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/** PPA Registers to be saved during sleep retention
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*
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* For CLUT mem, we shall choose not to power down the CLUT mem domain; Otherwise, there are two blocks of memory that needs to be restored by writing to mem addr directly.
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* Since PPA driver is operation based, most of the registers are configured per operation, so no need to save/restore.
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*
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* PPA_CLUT_CONF_REG,
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* PPA_INT_ENA_REG,
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* PPA_SR_MEM_PD_REG, PPA_REG_CONF_REG, PPA_SRAM_CTRL_REG,
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* PPA_RGB2GRAY_REG (> rev3 only, but ok to include it for < rev3 chips)
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*/
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#define PPA_RETENTION_REGS_CNT 6
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#define PPA_RETENTION_REGS_BASE PPA_CLUT_CONF_REG
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static const uint32_t ppa_regs_map[4] = {0x1800009, 0x9, 0x0, 0x0};
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static const regdma_entries_config_t ppa_regdma_entries[] = {
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[0] = {
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.config = REGDMA_LINK_ADDR_MAP_INIT(REGDMA_PPA_LINK(0x00),
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PPA_RETENTION_REGS_BASE, PPA_RETENTION_REGS_BASE,
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PPA_RETENTION_REGS_CNT, 0, 0,
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ppa_regs_map[0], ppa_regs_map[1],
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ppa_regs_map[2], ppa_regs_map[3]),
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.owner = ENTRY(0),
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},
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};
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const ppa_retention_desc_t ppa_reg_retention_info = {
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.module = SLEEP_RETENTION_MODULE_PPA,
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.regdma_entry_array = ppa_regdma_entries,
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.array_size = ARRAY_SIZE(ppa_regdma_entries),
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};
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