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49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2023 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 <stdbool.h>
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#include "soc/soc_caps.h"
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#include "esp_private/sleep_console.h"
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#include "esp_attr.h"
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#if SOC_USB_SERIAL_JTAG_SUPPORTED
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#include "hal/usb_serial_jtag_ll.h"
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static sleep_console_usj_enable_state_t s_usj_state = {0};
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void sleep_console_usj_pad_backup_and_disable(void)
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{
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// This function can be called in sleep process only, and sleep process code
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// is in critical region and thread safe already, so to avoid build errors/warnings
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// declare __DECLARE_RCC_ATOMIC_ENV here.
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int __DECLARE_RCC_ATOMIC_ENV __attribute__ ((unused));
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s_usj_state.usj_clock_enabled = usb_serial_jtag_ll_module_is_enabled();
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if (!s_usj_state.usj_clock_enabled) {
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// Enable USJ clock and clear reset
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usb_serial_jtag_ll_enable_bus_clock(true);
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usb_serial_jtag_ll_reset_register();
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}
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s_usj_state.usj_pad_enabled = usb_serial_jtag_ll_pad_backup_and_disable();
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// Disable USJ clock
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usb_serial_jtag_ll_enable_bus_clock(false);
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}
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void sleep_console_usj_pad_restore(void)
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{
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// This function can be called in sleep process only, and sleep process code
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// is in critical region and thread safe already, so to avoid build errors/warnings
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// declare __DECLARE_RCC_ATOMIC_ENV here.
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int __DECLARE_RCC_ATOMIC_ENV __attribute__ ((unused));
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usb_serial_jtag_ll_enable_bus_clock(true);
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usb_serial_jtag_ll_enable_pad(s_usj_state.usj_pad_enabled);
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if (!s_usj_state.usj_clock_enabled) {
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usb_serial_jtag_ll_enable_bus_clock(false);
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}
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}
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#endif
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