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usb: Add usb_phy driver to support operations on USB PHY

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songruojing
2021-08-19 20:28:28 +08:00
parent 7fc071e133
commit 1fcd639224
18 changed files with 980 additions and 6 deletions
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127
components/hal/esp32s3/include/hal/usb_phy_ll.h Normal file
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/*
* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdbool.h>
#include "soc/soc.h"
#include "soc/system_reg.h"
#include "soc/usb_wrap_struct.h"
#include "soc/rtc_cntl_struct.h"
#include "soc/usb_serial_jtag_struct.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Configures the internal PHY for USB_OTG
*
* @param hw Start address of the USB Wrap registers
*/
static inline void usb_phy_ll_int_otg_enable(usb_wrap_dev_t *hw)
{
hw->otg_conf.pad_enable = 1;
// USB_OTG use internal PHY
hw->otg_conf.phy_sel = 0;
// phy_sel is controlled by the following register value
RTCCNTL.usb_conf.sw_hw_usb_phy_sel = 1;
// phy_sel=sw_usb_phy_sel=1, USB_OTG is connected with internal PHY
RTCCNTL.usb_conf.sw_usb_phy_sel = 1;
}
/**
* @brief Configures the external PHY for USB_OTG
*
* @param hw Start address of the USB Wrap registers
*/
static inline void usb_phy_ll_ext_otg_enable(usb_wrap_dev_t *hw)
{
// USB_OTG use external PHY
hw->otg_conf.phy_sel = 1;
// phy_sel is controlled by the following register value
RTCCNTL.usb_conf.sw_hw_usb_phy_sel = 1;
// phy_sel=sw_usb_phy_sel=0, USB_OTG is connected with external PHY through GPIO Matrix
RTCCNTL.usb_conf.sw_usb_phy_sel = 0;
}
/**
* @brief Configures the internal PHY for USB_Serial_JTAG
*
* @param hw Start address of the USB Serial_JTAG registers
*/
static inline void usb_phy_ll_int_jtag_enable(usb_serial_jtag_dev_t *hw)
{
// USB_Serial_JTAG use internal PHY
hw->conf0.phy_sel = 0;
// Disable software control USB D+ D- pullup pulldown (Device FS: dp_pullup = 1)
hw->conf0.pad_pull_override = 0;
// Enable USB pad function
hw->conf0.usb_pad_enable = 1;
// phy_sel is controlled by the following register value
RTCCNTL.usb_conf.sw_hw_usb_phy_sel = 1;
// phy_sel=sw_usb_phy_sel=0, USB_Serial_JTAG is connected with internal PHY
RTCCNTL.usb_conf.sw_usb_phy_sel = 0;
}
/**
* @brief Configures the external PHY for USB_Serial_JTAG
*
* @param hw Start address of the USB Serial_JTAG registers
*/
static inline void usb_phy_ll_ext_jtag_enable(usb_serial_jtag_dev_t *hw)
{
// USB_Serial_JTAG use external PHY
hw->conf0.phy_sel = 1;
// phy_sel is controlled by the following register value
RTCCNTL.usb_conf.sw_hw_usb_phy_sel = 1;
// phy_sel=sw_usb_phy_sel=1, USB_Serial_JTAG is connected with external PHY
RTCCNTL.usb_conf.sw_usb_phy_sel = 1;
}
/**
* @brief Configures port loads for the internal PHY
*
* @param hw Start address of the USB Wrap registers
* @param dp_pu D+ pullup load
* @param dp_pd D+ pulldown load
* @param dm_pu D- pullup load
* @param dm_pd D- pulldown load
*/
static inline void usb_phy_ll_int_load_conf(usb_wrap_dev_t *hw, bool dp_pu, bool dp_pd, bool dm_pu, bool dm_pd)
{
usb_wrap_otg_conf_reg_t conf = hw->otg_conf;
conf.pad_pull_override = 1;
conf.dp_pullup = dp_pu;
conf.dp_pulldown = dp_pd;
conf.dm_pullup = dm_pu;
conf.dm_pulldown = dm_pd;
hw->otg_conf = conf;
}
/**
* @brief Enable the internal PHY's test mode
*
* @param hw Start address of the USB Wrap registers
* @param en Whether to enable the internal PHY's test mode
*/
static inline void usb_phy_ll_int_enable_test_mode(usb_wrap_dev_t *hw, bool en)
{
if (en) {
// Clear USB_WRAP_TEST_CONF_REG
hw->test_conf.val = 0;
// Set USB test pad oen
hw->test_conf.test_usb_wrap_oe = 1;
// Enable USB test mode
hw->test_conf.test_enable = 1;
} else {
hw->test_conf.test_enable = 0;
}
}
#ifdef __cplusplus
}
#endif