mirror of
https://github.com/espressif/esp-idf
synced 2025-04-03 21:30:08 -04:00
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2020-2024 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
// The LL layer for UHCI register operations.
|
|
// Note that most of the register operations in this layer are non-atomic operations.
|
|
|
|
#pragma once
|
|
#include <stdio.h>
|
|
#include "hal/uhci_types.h"
|
|
#include "soc/uhci_struct.h"
|
|
#include "soc/dport_reg.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @brief Enable the bus clock for UHCI module
|
|
*
|
|
* @param group_id Group ID
|
|
* @param enable true to enable, false to disable
|
|
*/
|
|
static inline void _uhci_ll_enable_bus_clock(int group_id, bool enable)
|
|
{
|
|
uint32_t reg_val = DPORT_READ_PERI_REG(DPORT_PERIP_CLK_EN_REG);
|
|
if (group_id == 0) {
|
|
reg_val &= ~DPORT_UHCI0_CLK_EN;
|
|
reg_val |= enable << 8;
|
|
} else {
|
|
reg_val &= ~DPORT_UHCI1_CLK_EN;
|
|
reg_val |= enable << 12;
|
|
}
|
|
DPORT_WRITE_PERI_REG(DPORT_PERIP_CLK_EN_REG, reg_val);
|
|
}
|
|
|
|
/// use a macro to wrap the function, force the caller to use it in a critical section
|
|
/// the critical section needs to declare the __DECLARE_RCC_ATOMIC_ENV variable in advance
|
|
#define uhci_ll_enable_bus_clock(...) (void)__DECLARE_RCC_ATOMIC_ENV; _uhci_ll_enable_bus_clock(__VA_ARGS__)
|
|
|
|
/**
|
|
* @brief Reset the UHCI module
|
|
*
|
|
* @param group_id Group ID
|
|
*/
|
|
static inline void _uhci_ll_reset_register(int group_id)
|
|
{
|
|
if (group_id == 0) {
|
|
DPORT_WRITE_PERI_REG(DPORT_PERIP_RST_EN_REG, DPORT_UHCI0_RST);
|
|
DPORT_WRITE_PERI_REG(DPORT_PERIP_RST_EN_REG, 0);
|
|
} else {
|
|
DPORT_WRITE_PERI_REG(DPORT_PERIP_RST_EN_REG, DPORT_UHCI1_RST);
|
|
DPORT_WRITE_PERI_REG(DPORT_PERIP_RST_EN_REG, 0);
|
|
}
|
|
}
|
|
|
|
/// use a macro to wrap the function, force the caller to use it in a critical section
|
|
/// the critical section needs to declare the __DECLARE_RCC_ATOMIC_ENV variable in advance
|
|
#define uhci_ll_reset_register(...) (void)__DECLARE_RCC_ATOMIC_ENV; _uhci_ll_reset_register(__VA_ARGS__)
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|