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/*
* Copyright (c) 2025, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbh_core.h"
#include "usbh_serial.h"
#undef USB_DBG_TAG
#define USB_DBG_TAG "usbh_gsm"
#include "usb_log.h"
struct usbh_gsm {
struct usb_endpoint_descriptor *intin;
struct usbh_urb intin_urb;
struct usb_osal_timer *modem_timer;
uint16_t modem_status;
};
static int usbh_gsm_attach(struct usbh_serial *serial)
{
struct usb_endpoint_descriptor *ep_desc;
struct usbh_gsm *gsm_class = usb_osal_malloc(sizeof(struct usbh_gsm));
if (!gsm_class) {
USB_LOG_ERR("No memory for gsm_class\r\n");
return -USB_ERR_NOMEM;
}
memset(gsm_class, 0, sizeof(struct usbh_gsm));
serial->priv = gsm_class;
for (uint8_t i = 0; i < serial->hport->config.intf[serial->intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
ep_desc = &serial->hport->config.intf[serial->intf].altsetting[0].ep[i].ep_desc;
if (USB_GET_ENDPOINT_TYPE(ep_desc->bmAttributes) == USB_ENDPOINT_TYPE_INTERRUPT) {
if (ep_desc->bEndpointAddress & 0x80) {
USBH_EP_INIT(gsm_class->intin, ep_desc);
break;
} else {
}
}
}
if (!gsm_class->intin) {
USB_LOG_WRN("Do not find interrupt endpoint, so disable modem status monitor\r\n");
}
return 0;
}
static void usbh_gsm_detach(struct usbh_serial *serial)
{
struct usbh_gsm *gsm_class;
if (!serial || !serial->priv) {
return;
}
gsm_class = (struct usbh_gsm *)serial->priv;
if (gsm_class->intin) {
usbh_kill_urb(&gsm_class->intin_urb);
}
serial->priv = NULL;
usb_osal_free(gsm_class);
}
static int usbh_gsm_set_line_coding(struct usbh_serial *serial, struct cdc_line_coding *line_coding)
{
return 0;
}
static int usbh_gsm_set_line_state(struct usbh_serial *serial, bool dtr, bool rts)
{
return 0;
}
static const struct usbh_serial_driver gsm_driver = {
.driver_name = "gsm",
.ignore_rx_header = 0,
.ignore_tx_header = 0,
.attach = usbh_gsm_attach,
.detach = usbh_gsm_detach,
.set_flow_control = NULL,
.set_line_coding = usbh_gsm_set_line_coding,
.get_line_coding = NULL,
.set_line_state = usbh_gsm_set_line_state,
.get_modem_status = NULL,
};
static int usbh_gsm_connect(struct usbh_hubport *hport, uint8_t intf)
{
return usbh_serial_probe(hport, intf, &gsm_driver) ? 0 : -USB_ERR_NOMEM;
}
static int usbh_gsm_disconnect(struct usbh_hubport *hport, uint8_t intf)
{
struct usbh_serial *serial = (struct usbh_serial *)hport->config.intf[intf].priv;
if (serial) {
usbh_serial_remove(serial);
}
return 0;
}
const struct usbh_class_driver gsm_class_driver = {
.driver_name = "gsm",
.connect = usbh_gsm_connect,
.disconnect = usbh_gsm_disconnect
};
static const uint16_t gsm_id_table[][2] = {
{ 0x2C7C, 0x0120 }, /* Quectel EC20 */
{ 0x2C7C, 0x0121 }, /* Quectel EC21 */
{ 0x2C7C, 0x0125 }, /* Quectel EC25 */
{ 0x2C7C, 0x0191 }, /* Quectel EG91 */
{ 0x2C7C, 0x0195 }, /* Quectel EG95 */
{ 0x2C7C, 0x6002 }, /* Quectel EC200/EC600/EC800/EG91x */
{ 0x1E0E, 0x9001 }, /* SIMCOM SIM7600 */
{ 0x2ECC, 0x3012 }, /* Chinamobile ML307R */
{ 0, 0 },
};
CLASS_INFO_DEFINE const struct usbh_class_info gsm_class_info = {
.match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
.bInterfaceClass = 0xff,
.bInterfaceSubClass = 0x00,
.bInterfaceProtocol = 0x00,
.id_table = gsm_id_table,
.class_driver = &gsm_class_driver
};
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