^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * serial.c -- USB gadget serial driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2008 by David Brownell
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2008 by Nokia Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/tty_flip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "u_serial.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /* Defines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define GS_VERSION_STR "v2.4"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define GS_VERSION_NUM 0x2400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define GS_LONG_NAME "Gadget Serial"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define GS_VERSION_NAME GS_LONG_NAME " " GS_VERSION_STR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /*-------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) USB_GADGET_COMPOSITE_OPTIONS();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* Thanks to NetChip Technologies for donating this product ID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * Instead: allocate your own, using normal USB-IF procedures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define GS_VENDOR_ID 0x0525 /* NetChip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define GS_PRODUCT_ID 0xa4a6 /* Linux-USB Serial Gadget */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define GS_CDC_PRODUCT_ID 0xa4a7 /* ... as CDC-ACM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define GS_CDC_OBEX_PRODUCT_ID 0xa4a9 /* ... as CDC-OBEX */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* string IDs are assigned dynamically */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define STRING_DESCRIPTION_IDX USB_GADGET_FIRST_AVAIL_IDX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static struct usb_string strings_dev[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) [USB_GADGET_MANUFACTURER_IDX].s = "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) [USB_GADGET_PRODUCT_IDX].s = GS_VERSION_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) [USB_GADGET_SERIAL_IDX].s = "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) [STRING_DESCRIPTION_IDX].s = NULL /* updated; f(use_acm) */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) { } /* end of list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static struct usb_gadget_strings stringtab_dev = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) .language = 0x0409, /* en-us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .strings = strings_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static struct usb_gadget_strings *dev_strings[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) &stringtab_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static struct usb_device_descriptor device_desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) .bLength = USB_DT_DEVICE_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .bDescriptorType = USB_DT_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) /* .bcdUSB = DYNAMIC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* .bDeviceClass = f(use_acm) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .bDeviceSubClass = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .bDeviceProtocol = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* .bMaxPacketSize0 = f(hardware) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) .idVendor = cpu_to_le16(GS_VENDOR_ID),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* .idProduct = f(use_acm) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) .bcdDevice = cpu_to_le16(GS_VERSION_NUM),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* .iManufacturer = DYNAMIC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* .iProduct = DYNAMIC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .bNumConfigurations = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static const struct usb_descriptor_header *otg_desc[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /*-------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* Module */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) MODULE_DESCRIPTION(GS_VERSION_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) MODULE_AUTHOR("Al Borchers");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) MODULE_AUTHOR("David Brownell");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static bool use_acm = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) module_param(use_acm, bool, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) MODULE_PARM_DESC(use_acm, "Use CDC ACM, default=yes");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) static bool use_obex = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) module_param(use_obex, bool, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) MODULE_PARM_DESC(use_obex, "Use CDC OBEX, default=no");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static unsigned n_ports = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) module_param(n_ports, uint, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) MODULE_PARM_DESC(n_ports, "number of ports to create, default=1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static bool enable = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static int switch_gserial_enable(bool do_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int enable_set(const char *s, const struct kernel_param *kp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) bool do_enable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (!s) /* called for no-arg enable == default */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) ret = strtobool(s, &do_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (ret || enable == do_enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) ret = switch_gserial_enable(do_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) enable = do_enable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static const struct kernel_param_ops enable_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .set = enable_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .get = param_get_bool,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) module_param_cb(enable, &enable_ops, &enable, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /*-------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static struct usb_configuration serial_config_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /* .label = f(use_acm) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /* .bConfigurationValue = f(use_acm) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /* .iConfiguration = DYNAMIC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .bmAttributes = USB_CONFIG_ATT_SELFPOWER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static struct usb_function_instance *fi_serial[MAX_U_SERIAL_PORTS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static struct usb_function *f_serial[MAX_U_SERIAL_PORTS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static int serial_register_ports(struct usb_composite_dev *cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct usb_configuration *c, const char *f_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) ret = usb_add_config_only(cdev, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) for (i = 0; i < n_ports; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) fi_serial[i] = usb_get_function_instance(f_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (IS_ERR(fi_serial[i])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) ret = PTR_ERR(fi_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) f_serial[i] = usb_get_function(fi_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (IS_ERR(f_serial[i])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) ret = PTR_ERR(f_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) goto err_get_func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) ret = usb_add_function(c, f_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) goto err_add_func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) err_add_func:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) usb_put_function(f_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) err_get_func:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) usb_put_function_instance(fi_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) i--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) while (i >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) usb_remove_function(c, f_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) usb_put_function(f_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) usb_put_function_instance(fi_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) i--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static int gs_bind(struct usb_composite_dev *cdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /* Allocate string descriptor numbers ... note that string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * contents can be overridden by the composite_dev glue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) status = usb_string_ids_tab(cdev, strings_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (status < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) status = strings_dev[STRING_DESCRIPTION_IDX].id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) serial_config_driver.iConfiguration = status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (gadget_is_otg(cdev->gadget)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (!otg_desc[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct usb_descriptor_header *usb_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) usb_desc = usb_otg_descriptor_alloc(cdev->gadget);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (!usb_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) status = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) usb_otg_descriptor_init(cdev->gadget, usb_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) otg_desc[0] = usb_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) otg_desc[1] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) serial_config_driver.descriptors = otg_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) serial_config_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) /* register our configuration */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (use_acm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) status = serial_register_ports(cdev, &serial_config_driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) "acm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) usb_ep_autoconfig_reset(cdev->gadget);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) } else if (use_obex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) status = serial_register_ports(cdev, &serial_config_driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) "obex");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) status = serial_register_ports(cdev, &serial_config_driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) "gser");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (status < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) goto fail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) usb_composite_overwrite_options(cdev, &coverwrite);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) INFO(cdev, "%s\n", GS_VERSION_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) fail1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) kfree(otg_desc[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) otg_desc[0] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static int gs_unbind(struct usb_composite_dev *cdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) for (i = 0; i < n_ports; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) usb_put_function(f_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) usb_put_function_instance(fi_serial[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) kfree(otg_desc[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) otg_desc[0] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static struct usb_composite_driver gserial_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) .name = "g_serial",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) .dev = &device_desc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) .strings = dev_strings,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) .max_speed = USB_SPEED_SUPER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) .bind = gs_bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) .unbind = gs_unbind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static int switch_gserial_enable(bool do_enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (!serial_config_driver.label)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) /* init() was not called, yet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (do_enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return usb_composite_probe(&gserial_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) usb_composite_unregister(&gserial_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static int __init init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) /* We *could* export two configs; that'd be much cleaner...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * but neither of these product IDs was defined that way.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (use_acm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) serial_config_driver.label = "CDC ACM config";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) serial_config_driver.bConfigurationValue = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) device_desc.bDeviceClass = USB_CLASS_COMM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) device_desc.idProduct =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) cpu_to_le16(GS_CDC_PRODUCT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) } else if (use_obex) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) serial_config_driver.label = "CDC OBEX config";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) serial_config_driver.bConfigurationValue = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) device_desc.bDeviceClass = USB_CLASS_COMM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) device_desc.idProduct =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) cpu_to_le16(GS_CDC_OBEX_PRODUCT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) serial_config_driver.label = "Generic Serial config";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) serial_config_driver.bConfigurationValue = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) device_desc.idProduct =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) cpu_to_le16(GS_PRODUCT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) strings_dev[STRING_DESCRIPTION_IDX].s = serial_config_driver.label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (!enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return usb_composite_probe(&gserial_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) module_init(init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static void __exit cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) usb_composite_unregister(&gserial_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) module_exit(cleanup);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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