236 lines
9.7 KiB
C
236 lines
9.7 KiB
C
// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdint.h>
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#include "soc/soc.h"
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#include "soc/rtc.h"
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#include "soc/rtc_cntl_reg.h"
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#include "soc/dport_reg.h"
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#include "soc/rtc.h"
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#include "soc/i2s_reg.h"
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#include "soc/timer_group_reg.h"
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#include "soc/bb_reg.h"
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#include "soc/nrx_reg.h"
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#include "soc/fe_reg.h"
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#include "soc/rtc.h"
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#include "rom/ets_sys.h"
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#define MHZ (1000000)
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/* Various delays to be programmed into power control state machines */
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#define ROM_RAM_POWERUP_DELAY 3
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#define ROM_RAM_WAIT_DELAY 3
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#define WIFI_POWERUP_DELAY 3
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#define WIFI_WAIT_DELAY 3
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#define RTC_POWERUP_DELAY 3
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#define RTC_WAIT_DELAY 3
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#define DG_WRAP_POWERUP_DELAY 3
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#define DG_WRAP_WAIT_DELAY 3
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#define RTC_MEM_POWERUP_DELAY 3
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#define RTC_MEM_WAIT_DELAY 3
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/**
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* @brief Power down flags for rtc_sleep_pd function
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*/
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typedef struct {
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uint32_t dig_pd : 1; //!< Set to 1 to power down digital part in sleep
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uint32_t rtc_pd : 1; //!< Set to 1 to power down RTC memories in sleep
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uint32_t cpu_pd : 1; //!< Set to 1 to power down digital memories and CPU in sleep
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uint32_t i2s_pd : 1; //!< Set to 1 to power down I2S in sleep
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uint32_t bb_pd : 1; //!< Set to 1 to power down WiFi in sleep
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uint32_t nrx_pd : 1; //!< Set to 1 to power down WiFi in sleep
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uint32_t fe_pd : 1; //!< Set to 1 to power down WiFi in sleep
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} rtc_sleep_pd_config_t;
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/**
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* Initializer for rtc_sleep_pd_config_t which sets all flags to the same value
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*/
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#define RTC_SLEEP_PD_CONFIG_ALL(val) {\
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.dig_pd = (val), \
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.rtc_pd = (val), \
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.cpu_pd = (val), \
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.i2s_pd = (val), \
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.bb_pd = (val), \
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.nrx_pd = (val), \
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.fe_pd = (val), \
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}
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/**
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* Configure whether certain peripherals are powered down in deep sleep
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* @param cfg power down flags as rtc_sleep_pd_config_t structure
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*/
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static void rtc_sleep_pd(rtc_sleep_pd_config_t cfg)
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{
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REG_SET_FIELD(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_LSLP_MEM_FORCE_PU, ~cfg.dig_pd);
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REG_SET_FIELD(RTC_CNTL_PWC_REG, RTC_CNTL_SLOWMEM_FORCE_LPU, ~cfg.rtc_pd);
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REG_SET_FIELD(RTC_CNTL_PWC_REG, RTC_CNTL_FASTMEM_FORCE_LPU, ~cfg.rtc_pd);
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DPORT_REG_SET_FIELD(DPORT_MEM_PD_MASK_REG, DPORT_LSLP_MEM_PD_MASK, ~cfg.cpu_pd);
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REG_SET_FIELD(I2S_PD_CONF_REG(0), I2S_PLC_MEM_FORCE_PU, ~cfg.i2s_pd);
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REG_SET_FIELD(I2S_PD_CONF_REG(0), I2S_FIFO_FORCE_PU, ~cfg.i2s_pd);
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REG_SET_FIELD(BBPD_CTRL, BB_FFT_FORCE_PU, ~cfg.bb_pd);
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REG_SET_FIELD(BBPD_CTRL, BB_DC_EST_FORCE_PU, ~cfg.bb_pd);
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REG_SET_FIELD(NRXPD_CTRL, NRX_RX_ROT_FORCE_PU, ~cfg.nrx_pd);
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REG_SET_FIELD(NRXPD_CTRL, NRX_VIT_FORCE_PU, ~cfg.nrx_pd);
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REG_SET_FIELD(NRXPD_CTRL, NRX_DEMAP_FORCE_PU, ~cfg.nrx_pd);
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REG_SET_FIELD(FE_GEN_CTRL, FE_IQ_EST_FORCE_PU, ~cfg.fe_pd);
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REG_SET_FIELD(FE2_TX_INTERP_CTRL, FE2_TX_INF_FORCE_PU, ~cfg.fe_pd);
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}
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void rtc_sleep_init(rtc_sleep_config_t cfg)
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{
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rtc_xtal_freq_t xtal_freq = rtc_clk_xtal_freq_get();
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REG_SET_FIELD(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_SOC_CLK_SEL, cfg.soc_clk_sel);
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//set 5 PWC state machine times to fit in main state machine time
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REG_SET_FIELD(RTC_CNTL_TIMER1_REG, RTC_CNTL_PLL_BUF_WAIT, 1);
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REG_SET_FIELD(RTC_CNTL_TIMER1_REG, RTC_CNTL_XTL_BUF_WAIT, RTC_CNTL_XTL_BUF_WAIT_DEFAULT);
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REG_SET_FIELD(RTC_CNTL_TIMER1_REG, RTC_CNTL_CK8M_WAIT, RTC_CNTL_CK8M_WAIT_DEFAULT);
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//set rom&ram timer
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REG_SET_FIELD(RTC_CNTL_TIMER3_REG, RTC_CNTL_ROM_RAM_POWERUP_TIMER, ROM_RAM_POWERUP_DELAY);
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REG_SET_FIELD(RTC_CNTL_TIMER3_REG, RTC_CNTL_ROM_RAM_WAIT_TIMER, ROM_RAM_WAIT_DELAY);
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//set wifi timer
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REG_SET_FIELD(RTC_CNTL_TIMER3_REG, RTC_CNTL_WIFI_POWERUP_TIMER, WIFI_POWERUP_DELAY);
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REG_SET_FIELD(RTC_CNTL_TIMER3_REG, RTC_CNTL_WIFI_WAIT_TIMER, WIFI_WAIT_DELAY);
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//set rtc peri timer
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REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_POWERUP_TIMER, RTC_POWERUP_DELAY);
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REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_WAIT_TIMER, RTC_WAIT_DELAY);
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//set digital wrap timer
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REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_DG_WRAP_POWERUP_TIMER, DG_WRAP_POWERUP_DELAY);
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REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_DG_WRAP_WAIT_TIMER, DG_WRAP_WAIT_DELAY);
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//set rtc memory timer
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REG_SET_FIELD(RTC_CNTL_TIMER5_REG, RTC_CNTL_RTCMEM_POWERUP_TIMER, RTC_MEM_POWERUP_DELAY);
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REG_SET_FIELD(RTC_CNTL_TIMER5_REG, RTC_CNTL_RTCMEM_WAIT_TIMER, RTC_MEM_WAIT_DELAY);
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if (cfg.soc_clk_sel == RTC_CNTL_SOC_CLK_SEL_PLL) {
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REG_SET_FIELD(RTC_CNTL_TIMER1_REG, RTC_CNTL_PLL_BUF_WAIT, RTC_CNTL_PLL_BUF_WAIT_DEFAULT);
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} else if (cfg.soc_clk_sel == RTC_CNTL_SOC_CLK_SEL_XTL) {
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ets_update_cpu_frequency(xtal_freq);
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rtc_clk_apb_freq_update(xtal_freq * MHZ);
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} else if (cfg.soc_clk_sel == RTC_CNTL_SOC_CLK_SEL_8M) {
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ets_update_cpu_frequency(8);
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rtc_clk_apb_freq_update(8 * MHZ);
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}
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if (cfg.lslp_mem_inf_fpu) {
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SET_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_LSLP_MEM_FORCE_PU);
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} else {
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CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_LSLP_MEM_FORCE_PU);
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}
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rtc_sleep_pd_config_t pd_cfg = RTC_SLEEP_PD_CONFIG_ALL(cfg.lslp_meminf_pd);
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rtc_sleep_pd(pd_cfg);
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if (cfg.rtc_mem_inf_fpu) {
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SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_MEM_FORCE_PU);
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} else {
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CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_MEM_FORCE_PU);
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}
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if (cfg.rtc_mem_inf_follow_cpu) {
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SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_MEM_FOLW_CPU);
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} else {
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CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_MEM_FOLW_CPU);
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}
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if (cfg.rtc_fastmem_pd_en) {
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SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_FASTMEM_PD_EN);
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CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_FASTMEM_FORCE_PU);
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CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_FASTMEM_FORCE_NOISO);
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} else {
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CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_FASTMEM_PD_EN);
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SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_FASTMEM_FORCE_PU);
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SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_FASTMEM_FORCE_NOISO);
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}
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if (cfg.rtc_slowmem_pd_en) {
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SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_SLOWMEM_PD_EN);
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CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_SLOWMEM_FORCE_PU);
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CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_SLOWMEM_FORCE_NOISO);
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} else {
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CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_SLOWMEM_PD_EN);
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SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_SLOWMEM_FORCE_PU);
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SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_SLOWMEM_FORCE_NOISO);
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}
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if (cfg.rtc_peri_pd_en) {
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SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_PD_EN);
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} else {
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CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_PD_EN);
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}
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if (cfg.wifi_pd_en) {
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SET_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_WIFI_PD_EN);
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} else {
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CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_WIFI_PD_EN);
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}
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if (cfg.rom_mem_pd_en) {
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SET_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_CPU_ROM_RAM_PD_EN);
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} else {
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CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_CPU_ROM_RAM_PD_EN);
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}
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if (cfg.deep_slp) {
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CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG,
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RTC_CNTL_DG_PAD_FORCE_ISO | RTC_CNTL_DG_PAD_FORCE_NOISO);
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SET_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_DG_WRAP_PD_EN);
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CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG,
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RTC_CNTL_DG_WRAP_FORCE_PU | RTC_CNTL_DG_WRAP_FORCE_PD);
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CLEAR_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_FORCE_NOSLEEP);
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// Shut down parts of RTC which may have been left enabled by the wireless drivers
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CLEAR_PERI_REG_MASK(RTC_CNTL_ANA_CONF_REG,
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RTC_CNTL_CKGEN_I2C_PU | RTC_CNTL_PLL_I2C_PU |
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RTC_CNTL_RFRX_PBUS_PU | RTC_CNTL_TXRF_I2C_PU);
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} else {
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CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_DG_WRAP_PD_EN);
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SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_FORCE_NOSLEEP);
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}
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if (cfg.vddsdio_pd_en) {
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SET_PERI_REG_MASK(RTC_CNTL_SDIO_CONF_REG, RTC_CNTL_SDIO_PD_EN);
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} else {
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CLEAR_PERI_REG_MASK(RTC_CNTL_SDIO_CONF_REG, RTC_CNTL_SDIO_PD_EN);
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}
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REG_SET_FIELD(RTC_CNTL_REG, RTC_CNTL_DBIAS_SLP, cfg.rtc_dbias_slp);
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REG_SET_FIELD(RTC_CNTL_REG, RTC_CNTL_DBIAS_WAK, cfg.rtc_dbias_wak);
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REG_SET_FIELD(RTC_CNTL_REG, RTC_CNTL_DIG_DBIAS_WAK, cfg.dig_dbias_wak);
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REG_SET_FIELD(RTC_CNTL_REG, RTC_CNTL_DIG_DBIAS_SLP, cfg.dig_dbias_slp);
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}
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void rtc_sleep_set_wakeup_time(uint64_t t)
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{
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WRITE_PERI_REG(RTC_CNTL_SLP_TIMER0_REG, t & UINT32_MAX);
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WRITE_PERI_REG(RTC_CNTL_SLP_TIMER1_REG, t >> 32);
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}
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uint32_t rtc_sleep_start(uint32_t wakeup_opt, uint32_t reject_opt)
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{
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REG_SET_FIELD(RTC_CNTL_WAKEUP_STATE_REG, RTC_CNTL_WAKEUP_ENA, wakeup_opt);
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WRITE_PERI_REG(RTC_CNTL_SLP_REJECT_CONF_REG, reject_opt);
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/* Start entry into sleep mode */
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SET_PERI_REG_MASK(RTC_CNTL_STATE0_REG, RTC_CNTL_SLEEP_EN);
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while (GET_PERI_REG_MASK(RTC_CNTL_INT_RAW_REG,
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RTC_CNTL_SLP_REJECT_INT_RAW | RTC_CNTL_SLP_WAKEUP_INT_RAW) == 0) {
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;
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}
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/* In deep sleep mode, we never get here */
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uint32_t reject = REG_GET_FIELD(RTC_CNTL_INT_RAW_REG, RTC_CNTL_SLP_REJECT_INT_RAW);
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SET_PERI_REG_MASK(RTC_CNTL_INT_CLR_REG,
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RTC_CNTL_SLP_REJECT_INT_CLR | RTC_CNTL_SLP_WAKEUP_INT_CLR);
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return reject;
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}
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