509 lines
15 KiB
C
509 lines
15 KiB
C
/*
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* Copyright (c) 2024, sakumisu
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "usbh_core.h"
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#include "usbh_ftdi.h"
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#define DEV_FORMAT "/dev/ttyUSB%d"
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USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_ftdi_buf[USB_ALIGN_UP(64, CONFIG_USB_ALIGN_SIZE)];
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#define CONFIG_USBHOST_MAX_FTDI_CLASS 1
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static struct usbh_ftdi g_ftdi_class[CONFIG_USBHOST_MAX_FTDI_CLASS];
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static uint32_t g_devinuse = 0;
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static const char *ftdi_chip_name[] = {
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[SIO] = "SIO", /* the serial part of FT8U100AX */
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[FT232A] = "FT232A",
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[FT232B] = "FT232B",
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[FT2232C] = "FT2232C/D",
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[FT232R] = "FT232R",
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[FT232H] = "FT232H",
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[FT2232H] = "FT2232H",
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[FT4232H] = "FT4232H",
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[FT4232HA] = "FT4232HA",
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[FT232HP] = "FT232HP",
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[FT233HP] = "FT233HP",
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[FT2232HP] = "FT2232HP",
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[FT2233HP] = "FT2233HP",
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[FT4232HP] = "FT4232HP",
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[FT4233HP] = "FT4233HP",
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[FTX] = "FT-X",
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};
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static struct usbh_ftdi *usbh_ftdi_class_alloc(void)
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{
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uint8_t devno;
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for (devno = 0; devno < CONFIG_USBHOST_MAX_FTDI_CLASS; devno++) {
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if ((g_devinuse & (1U << devno)) == 0) {
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g_devinuse |= (1U << devno);
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memset(&g_ftdi_class[devno], 0, sizeof(struct usbh_ftdi));
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g_ftdi_class[devno].minor = devno;
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return &g_ftdi_class[devno];
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}
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}
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return NULL;
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}
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static void usbh_ftdi_class_free(struct usbh_ftdi *ftdi_class)
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{
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uint8_t devno = ftdi_class->minor;
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if (devno < 32) {
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g_devinuse &= ~(1U << devno);
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}
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memset(ftdi_class, 0, sizeof(struct usbh_ftdi));
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}
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/*
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* Divide positive or negative dividend by positive or negative divisor
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* and round to closest integer. Result is undefined for negative
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* divisors if the dividend variable type is unsigned and for negative
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* dividends if the divisor variable type is unsigned.
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*/
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#define DIV_ROUND_CLOSEST(x, divisor) ( \
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{ \
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typeof(x) __x = x; \
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typeof(divisor) __d = divisor; \
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(((typeof(x))-1) > 0 || \
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((typeof(divisor))-1) > 0 || \
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(((__x) > 0) == ((__d) > 0))) ? \
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(((__x) + ((__d) / 2)) / (__d)) : \
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(((__x) - ((__d) / 2)) / (__d)); \
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})
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static uint32_t ftdi_232bm_baud_base_to_divisor(uint32_t baud, int base)
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{
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static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
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uint32_t divisor;
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/* divisor shifted 3 bits to the left */
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int divisor3 = DIV_ROUND_CLOSEST(base, 2 * baud);
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divisor = divisor3 >> 3;
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divisor |= (uint32_t)divfrac[divisor3 & 0x7] << 14;
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/* Deal with special cases for highest baud rates. */
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if (divisor == 1) /* 1.0 */
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divisor = 0;
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else if (divisor == 0x4001) /* 1.5 */
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divisor = 1;
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return divisor;
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}
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static uint32_t ftdi_232bm_baud_to_divisor(uint32_t baud)
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{
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return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
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}
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static uint32_t ftdi_2232h_baud_base_to_divisor(uint32_t baud, int base)
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{
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static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
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uint32_t divisor;
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int divisor3;
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/* hi-speed baud rate is 10-bit sampling instead of 16-bit */
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divisor3 = DIV_ROUND_CLOSEST(8 * base, 10 * baud);
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divisor = divisor3 >> 3;
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divisor |= (uint32_t)divfrac[divisor3 & 0x7] << 14;
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/* Deal with special cases for highest baud rates. */
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if (divisor == 1) /* 1.0 */
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divisor = 0;
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else if (divisor == 0x4001) /* 1.5 */
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divisor = 1;
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/*
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* Set this bit to turn off a divide by 2.5 on baud rate generator
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* This enables baud rates up to 12Mbaud but cannot reach below 1200
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* baud with this bit set
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*/
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divisor |= 0x00020000;
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return divisor;
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}
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static uint32_t ftdi_2232h_baud_to_divisor(uint32_t baud)
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{
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return ftdi_2232h_baud_base_to_divisor(baud, 120000000);
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}
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int usbh_ftdi_reset(struct usbh_ftdi *ftdi_class)
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{
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struct usb_setup_packet *setup;
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if (!ftdi_class || !ftdi_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = ftdi_class->hport->setup;
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setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
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setup->bRequest = SIO_RESET_REQUEST;
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setup->wValue = 0;
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setup->wIndex = ftdi_class->intf;
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setup->wLength = 0;
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return usbh_control_transfer(ftdi_class->hport, setup, NULL);
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}
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static int usbh_ftdi_set_modem(struct usbh_ftdi *ftdi_class, uint16_t value)
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{
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struct usb_setup_packet *setup;
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if (!ftdi_class || !ftdi_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = ftdi_class->hport->setup;
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setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
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setup->bRequest = SIO_SET_MODEM_CTRL_REQUEST;
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setup->wValue = value;
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setup->wIndex = ftdi_class->intf;
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setup->wLength = 0;
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return usbh_control_transfer(ftdi_class->hport, setup, NULL);
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}
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static int usbh_ftdi_set_baudrate(struct usbh_ftdi *ftdi_class, uint32_t baudrate)
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{
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struct usb_setup_packet *setup;
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uint32_t div_value;
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uint16_t value;
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uint8_t baudrate_high;
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if (!ftdi_class || !ftdi_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = ftdi_class->hport->setup;
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switch (ftdi_class->chip_type) {
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case FT232B:
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case FT2232C:
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case FT232R:
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if (baudrate > 3000000) {
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return -USB_ERR_INVAL;
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}
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div_value = ftdi_232bm_baud_to_divisor(baudrate);
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break;
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default:
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if ((baudrate <= 12000000) && (baudrate >= 1200)) {
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div_value = ftdi_2232h_baud_to_divisor(baudrate);
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} else {
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return -USB_ERR_INVAL;
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}
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break;
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}
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value = div_value & 0xFFFF;
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baudrate_high = (div_value >> 16) & 0xff;
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setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
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setup->bRequest = SIO_SET_BAUDRATE_REQUEST;
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setup->wValue = value;
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setup->wIndex = (baudrate_high << 8) | ftdi_class->intf;
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setup->wLength = 0;
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return usbh_control_transfer(ftdi_class->hport, setup, NULL);
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}
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static int usbh_ftdi_set_data_format(struct usbh_ftdi *ftdi_class, uint8_t databits, uint8_t parity, uint8_t stopbits, uint8_t isbreak)
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{
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/**
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* D0-D7 databits BITS_7=7, BITS_8=8
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* D8-D10 parity NONE=0, ODD=1, EVEN=2, MARK=3, SPACE=4
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* D11-D12 STOP_BIT_1=0, STOP_BIT_15=1, STOP_BIT_2=2
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* D14 BREAK_OFF=0, BREAK_ON=1
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**/
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struct usb_setup_packet *setup;
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uint16_t value;
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if (!ftdi_class || !ftdi_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = ftdi_class->hport->setup;
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value = ((isbreak & 0x01) << 14) | ((stopbits & 0x03) << 11) | ((parity & 0x0f) << 8) | (databits & 0x0f);
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setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
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setup->bRequest = SIO_SET_DATA_REQUEST;
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setup->wValue = value;
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setup->wIndex = ftdi_class->intf;
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setup->wLength = 0;
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return usbh_control_transfer(ftdi_class->hport, setup, NULL);
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}
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static int usbh_ftdi_set_latency_timer(struct usbh_ftdi *ftdi_class, uint16_t value)
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{
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struct usb_setup_packet *setup;
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if (!ftdi_class || !ftdi_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = ftdi_class->hport->setup;
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setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
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setup->bRequest = SIO_SET_LATENCY_TIMER_REQUEST;
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setup->wValue = value;
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setup->wIndex = ftdi_class->intf;
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setup->wLength = 0;
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return usbh_control_transfer(ftdi_class->hport, setup, NULL);
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}
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static int usbh_ftdi_set_flow_ctrl(struct usbh_ftdi *ftdi_class, uint16_t value)
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{
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struct usb_setup_packet *setup;
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if (!ftdi_class || !ftdi_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = ftdi_class->hport->setup;
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setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
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setup->bRequest = SIO_SET_FLOW_CTRL_REQUEST;
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setup->wValue = value;
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setup->wIndex = ftdi_class->intf;
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setup->wLength = 0;
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return usbh_control_transfer(ftdi_class->hport, setup, NULL);
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}
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static int usbh_ftdi_read_modem_status(struct usbh_ftdi *ftdi_class)
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{
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struct usb_setup_packet *setup;
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int ret;
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if (!ftdi_class || !ftdi_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = ftdi_class->hport->setup;
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setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
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setup->bRequest = SIO_POLL_MODEM_STATUS_REQUEST;
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setup->wValue = 0x0000;
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setup->wIndex = ftdi_class->intf;
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setup->wLength = 2;
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ret = usbh_control_transfer(ftdi_class->hport, setup, g_ftdi_buf);
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if (ret < 0) {
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return ret;
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}
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memcpy(ftdi_class->modem_status, g_ftdi_buf, 2);
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return ret;
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}
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int usbh_ftdi_set_line_coding(struct usbh_ftdi *ftdi_class, struct cdc_line_coding *line_coding)
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{
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memcpy((uint8_t *)&ftdi_class->line_coding, line_coding, sizeof(struct cdc_line_coding));
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int ret = usbh_ftdi_set_baudrate(ftdi_class, line_coding->dwDTERate);
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if (ret < 0) {
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return ret;
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}
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return usbh_ftdi_set_data_format(ftdi_class, line_coding->bDataBits, line_coding->bParityType, line_coding->bCharFormat, 0);
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}
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int usbh_ftdi_get_line_coding(struct usbh_ftdi *ftdi_class, struct cdc_line_coding *line_coding)
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{
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memcpy(line_coding, (uint8_t *)&ftdi_class->line_coding, sizeof(struct cdc_line_coding));
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return 0;
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}
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int usbh_ftdi_set_line_state(struct usbh_ftdi *ftdi_class, bool dtr, bool rts)
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{
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int ret;
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if (dtr) {
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usbh_ftdi_set_modem(ftdi_class, SIO_SET_DTR_HIGH);
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} else {
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usbh_ftdi_set_modem(ftdi_class, SIO_SET_DTR_LOW);
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}
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if (rts) {
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ret = usbh_ftdi_set_modem(ftdi_class, SIO_SET_RTS_HIGH);
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} else {
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ret = usbh_ftdi_set_modem(ftdi_class, SIO_SET_RTS_LOW);
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}
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return ret;
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}
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static int usbh_ftdi_connect(struct usbh_hubport *hport, uint8_t intf)
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{
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struct usb_endpoint_descriptor *ep_desc;
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int ret = 0;
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uint16_t version;
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struct usbh_ftdi *ftdi_class = usbh_ftdi_class_alloc();
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if (ftdi_class == NULL) {
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USB_LOG_ERR("Fail to alloc ftdi_class\r\n");
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return -USB_ERR_NOMEM;
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}
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ftdi_class->hport = hport;
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ftdi_class->intf = intf;
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hport->config.intf[intf].priv = ftdi_class;
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version = hport->device_desc.bcdDevice;
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switch (version) {
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case 0x400:
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ftdi_class->chip_type = FT232B;
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case 0x500:
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ftdi_class->chip_type = FT2232C;
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break;
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case 0x600:
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ftdi_class->chip_type = FT232R;
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break;
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case 0x700:
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ftdi_class->chip_type = FT2232H;
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break;
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case 0x800:
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ftdi_class->chip_type = FT4232H;
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break;
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case 0x900:
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ftdi_class->chip_type = FT232H;
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break;
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default:
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USB_LOG_ERR("Unknown FTDI chip version:%04x\r\n", version);
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return -USB_ERR_NOTSUPP;
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}
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USB_LOG_INFO("FTDI chip name:%s\r\n", ftdi_chip_name[ftdi_class->chip_type]);
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usbh_ftdi_reset(ftdi_class);
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usbh_ftdi_set_flow_ctrl(ftdi_class, SIO_DISABLE_FLOW_CTRL);
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usbh_ftdi_set_latency_timer(ftdi_class, 0x10);
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usbh_ftdi_read_modem_status(ftdi_class);
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USB_LOG_INFO("modem status:%02x:%02x\r\n", ftdi_class->modem_status[0], ftdi_class->modem_status[1]);
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for (uint8_t i = 0; i < hport->config.intf[intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
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ep_desc = &hport->config.intf[intf].altsetting[0].ep[i].ep_desc;
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if (ep_desc->bEndpointAddress & 0x80) {
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USBH_EP_INIT(ftdi_class->bulkin, ep_desc);
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} else {
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USBH_EP_INIT(ftdi_class->bulkout, ep_desc);
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}
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}
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snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, ftdi_class->minor);
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USB_LOG_INFO("Register FTDI Class:%s\r\n", hport->config.intf[intf].devname);
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#if 0
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USB_LOG_INFO("Test ftdi rx and tx and rx for 5 times, baudrate is 115200\r\n");
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struct cdc_line_coding linecoding;
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uint8_t count = 5;
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linecoding.dwDTERate = 115200;
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linecoding.bDataBits = 8;
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linecoding.bParityType = 0;
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linecoding.bCharFormat = 0;
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usbh_ftdi_set_line_coding(ftdi_class, &linecoding);
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usbh_ftdi_set_line_state(ftdi_class, true, false);
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memset(g_ftdi_buf, 'a', sizeof(g_ftdi_buf));
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ret = usbh_ftdi_bulk_out_transfer(ftdi_class, g_ftdi_buf, sizeof(g_ftdi_buf), 0xfffffff);
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USB_LOG_RAW("out ret:%d\r\n", ret);
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while (count--) {
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ret = usbh_ftdi_bulk_in_transfer(ftdi_class, g_ftdi_buf, sizeof(g_ftdi_buf), 0xfffffff);
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USB_LOG_RAW("in ret:%d\r\n", ret);
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if (ret > 0) {
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for (uint32_t i = 0; i < ret; i++) {
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USB_LOG_RAW("%02x ", g_ftdi_buf[i]);
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}
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}
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USB_LOG_RAW("\r\n");
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}
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#endif
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usbh_ftdi_run(ftdi_class);
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return ret;
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}
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static int usbh_ftdi_disconnect(struct usbh_hubport *hport, uint8_t intf)
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{
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int ret = 0;
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struct usbh_ftdi *ftdi_class = (struct usbh_ftdi *)hport->config.intf[intf].priv;
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if (ftdi_class) {
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if (ftdi_class->bulkin) {
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usbh_kill_urb(&ftdi_class->bulkin_urb);
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}
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if (ftdi_class->bulkout) {
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usbh_kill_urb(&ftdi_class->bulkout_urb);
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}
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if (hport->config.intf[intf].devname[0] != '\0') {
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usb_osal_thread_schedule_other();
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USB_LOG_INFO("Unregister FTDI Class:%s\r\n", hport->config.intf[intf].devname);
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usbh_ftdi_stop(ftdi_class);
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}
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usbh_ftdi_class_free(ftdi_class);
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}
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return ret;
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}
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int usbh_ftdi_bulk_in_transfer(struct usbh_ftdi *ftdi_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
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{
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int ret;
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struct usbh_urb *urb = &ftdi_class->bulkin_urb;
|
|
|
|
usbh_bulk_urb_fill(urb, ftdi_class->hport, ftdi_class->bulkin, buffer, buflen, timeout, NULL, NULL);
|
|
ret = usbh_submit_urb(urb);
|
|
if (ret == 0) {
|
|
ret = urb->actual_length;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int usbh_ftdi_bulk_out_transfer(struct usbh_ftdi *ftdi_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
|
|
{
|
|
int ret;
|
|
struct usbh_urb *urb = &ftdi_class->bulkout_urb;
|
|
|
|
usbh_bulk_urb_fill(urb, ftdi_class->hport, ftdi_class->bulkout, buffer, buflen, timeout, NULL, NULL);
|
|
ret = usbh_submit_urb(urb);
|
|
if (ret == 0) {
|
|
ret = urb->actual_length;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
__WEAK void usbh_ftdi_run(struct usbh_ftdi *ftdi_class)
|
|
{
|
|
(void)ftdi_class;
|
|
}
|
|
|
|
__WEAK void usbh_ftdi_stop(struct usbh_ftdi *ftdi_class)
|
|
{
|
|
(void)ftdi_class;
|
|
}
|
|
|
|
static const uint16_t ftdi_id_table[][2] = {
|
|
{ 0x0403, 0x6001 },
|
|
{ 0x0403, 0x6010 },
|
|
{ 0, 0 },
|
|
};
|
|
|
|
const struct usbh_class_driver ftdi_class_driver = {
|
|
.driver_name = "ftdi",
|
|
.connect = usbh_ftdi_connect,
|
|
.disconnect = usbh_ftdi_disconnect
|
|
};
|
|
|
|
CLASS_INFO_DEFINE const struct usbh_class_info ftdi_class_info = {
|
|
.match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS,
|
|
.bInterfaceClass = 0xff,
|
|
.bInterfaceSubClass = 0x00,
|
|
.bInterfaceProtocol = 0x00,
|
|
.id_table = ftdi_id_table,
|
|
.class_driver = &ftdi_class_driver
|
|
}; |