^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) * cdc-acm.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 1999 Pavel Machek <pavel@ucw.cz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (c) 1999 Johannes Erdfelt <johannes@erdfelt.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (c) 2004 Oliver Neukum <oliver@neukum.name>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright (c) 2005 David Kubicek <dave@awk.cz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Copyright (c) 2011 Johan Hovold <jhovold@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * USB Abstract Control Model driver for USB modems and ISDN adapters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Sponsored by SuSE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #undef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #undef VERBOSE_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/log2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/tty_driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/tty_flip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/usb/cdc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/idr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include "cdc-acm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static struct usb_driver acm_driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static struct tty_driver *acm_tty_driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static DEFINE_IDR(acm_minors);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static DEFINE_MUTEX(acm_minors_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static void acm_tty_set_termios(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct ktermios *termios_old);
^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) * acm_minors accessors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * Look up an ACM structure by minor. If found and not disconnected, increment
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * its refcount and return it with its mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static struct acm *acm_get_by_minor(unsigned int minor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct acm *acm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) mutex_lock(&acm_minors_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) acm = idr_find(&acm_minors, minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (acm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) mutex_lock(&acm->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (acm->disconnected) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) mutex_unlock(&acm->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) acm = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) tty_port_get(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) mutex_unlock(&acm->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) mutex_unlock(&acm_minors_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return acm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * Try to find an available minor number and if found, associate it with 'acm'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) static int acm_alloc_minor(struct acm *acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) mutex_lock(&acm_minors_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) minor = idr_alloc(&acm_minors, acm, 0, ACM_TTY_MINORS, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) mutex_unlock(&acm_minors_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /* Release the minor number associated with 'acm'. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static void acm_release_minor(struct acm *acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) mutex_lock(&acm_minors_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) idr_remove(&acm_minors, acm->minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) mutex_unlock(&acm_minors_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * Functions for ACM control messages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static int acm_ctrl_msg(struct acm *acm, int request, int value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) void *buf, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) retval = usb_autopm_get_interface(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) request, USB_RT_ACM, value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) acm->control->altsetting[0].desc.bInterfaceNumber,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) buf, len, 5000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) dev_dbg(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) "%s - rq 0x%02x, val %#x, len %#x, result %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) __func__, request, value, len, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) usb_autopm_put_interface(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return retval < 0 ? retval : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /* devices aren't required to support these requests.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * the cdc acm descriptor tells whether they do...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static inline int acm_set_control(struct acm *acm, int control)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (acm->quirks & QUIRK_CONTROL_LINE_STATE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) control, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #define acm_set_line(acm, line) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #define acm_send_break(acm, ms) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static void acm_poison_urbs(struct acm *acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) usb_poison_urb(acm->ctrlurb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) for (i = 0; i < ACM_NW; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) usb_poison_urb(acm->wb[i].urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) for (i = 0; i < acm->rx_buflimit; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) usb_poison_urb(acm->read_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static void acm_unpoison_urbs(struct acm *acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) for (i = 0; i < acm->rx_buflimit; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) usb_unpoison_urb(acm->read_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) for (i = 0; i < ACM_NW; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) usb_unpoison_urb(acm->wb[i].urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) usb_unpoison_urb(acm->ctrlurb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * Write buffer management.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * All of these assume proper locks taken by the caller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static int acm_wb_alloc(struct acm *acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) int i, wbn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct acm_wb *wb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) wbn = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) wb = &acm->wb[wbn];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (!wb->use) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) wb->use = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) wb->len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return wbn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) wbn = (wbn + 1) % ACM_NW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (++i >= ACM_NW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^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) static int acm_wb_is_avail(struct acm *acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int i, n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) n = ACM_NW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) spin_lock_irqsave(&acm->write_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) for (i = 0; i < ACM_NW; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if(acm->wb[i].use)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) n--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) spin_unlock_irqrestore(&acm->write_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * Finish write. Caller must hold acm->write_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static void acm_write_done(struct acm *acm, struct acm_wb *wb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) wb->use = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) acm->transmitting--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) usb_autopm_put_interface_async(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^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) * Poke write.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) * the caller is responsible for locking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) acm->transmitting++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) wb->urb->transfer_buffer = wb->buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) wb->urb->transfer_dma = wb->dmah;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) wb->urb->transfer_buffer_length = wb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) wb->urb->dev = acm->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) rc = usb_submit_urb(wb->urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (rc != -EPERM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) dev_err(&acm->data->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) "%s - usb_submit_urb(write bulk) failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) __func__, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) acm_write_done(acm, wb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * attributes exported through sysfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) static ssize_t bmCapabilities_show
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) (struct device *dev, struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct usb_interface *intf = to_usb_interface(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct acm *acm = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) return sprintf(buf, "%d", acm->ctrl_caps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static DEVICE_ATTR_RO(bmCapabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) static ssize_t wCountryCodes_show
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) (struct device *dev, struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) struct usb_interface *intf = to_usb_interface(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct acm *acm = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) memcpy(buf, acm->country_codes, acm->country_code_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return acm->country_code_size;
^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 DEVICE_ATTR_RO(wCountryCodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static ssize_t iCountryCodeRelDate_show
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) (struct device *dev, struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) struct usb_interface *intf = to_usb_interface(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) struct acm *acm = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) return sprintf(buf, "%d", acm->country_rel_date);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) static DEVICE_ATTR_RO(iCountryCodeRelDate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * Interrupt handlers for various ACM device responses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static void acm_process_notification(struct acm *acm, unsigned char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) int newctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) int difference;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) struct usb_cdc_notification *dr = (struct usb_cdc_notification *)buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) unsigned char *data = buf + sizeof(struct usb_cdc_notification);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) switch (dr->bNotificationType) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) case USB_CDC_NOTIFY_NETWORK_CONNECTION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) dev_dbg(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) "%s - network connection: %d\n", __func__, dr->wValue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) case USB_CDC_NOTIFY_SERIAL_STATE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (le16_to_cpu(dr->wLength) != 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) dev_dbg(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) "%s - malformed serial state\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) newctrl = get_unaligned_le16(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) dev_dbg(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) "%s - serial state: 0x%x\n", __func__, newctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) dev_dbg(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) "%s - calling hangup\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) tty_port_tty_hangup(&acm->port, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) difference = acm->ctrlin ^ newctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) spin_lock_irqsave(&acm->read_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) acm->ctrlin = newctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) acm->oldcount = acm->iocount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (difference & ACM_CTRL_DSR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) acm->iocount.dsr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) if (difference & ACM_CTRL_DCD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) acm->iocount.dcd++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (newctrl & ACM_CTRL_BRK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) acm->iocount.brk++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) tty_insert_flip_char(&acm->port, 0, TTY_BREAK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (newctrl & ACM_CTRL_RI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) acm->iocount.rng++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (newctrl & ACM_CTRL_FRAMING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) acm->iocount.frame++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (newctrl & ACM_CTRL_PARITY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) acm->iocount.parity++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) if (newctrl & ACM_CTRL_OVERRUN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) acm->iocount.overrun++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) spin_unlock_irqrestore(&acm->read_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) if (newctrl & ACM_CTRL_BRK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) tty_flip_buffer_push(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) if (difference)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) wake_up_all(&acm->wioctl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) dev_dbg(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) "%s - unknown notification %d received: index %d len %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) dr->bNotificationType, dr->wIndex, dr->wLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) /* control interface reports status changes with "interrupt" transfers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) static void acm_ctrl_irq(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) struct acm *acm = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) struct usb_cdc_notification *dr = urb->transfer_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) unsigned int current_size = urb->actual_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) unsigned int expected_size, copy_size, alloc_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) int status = urb->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) /* success */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) case -ECONNRESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) case -ENOENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) case -ESHUTDOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) /* this urb is terminated, clean up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) dev_dbg(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) "%s - urb shutting down with status: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) __func__, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) dev_dbg(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) "%s - nonzero urb status received: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) __func__, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) usb_mark_last_busy(acm->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (acm->nb_index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) dr = (struct usb_cdc_notification *)acm->notification_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) /* size = notification-header + (optional) data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) expected_size = sizeof(struct usb_cdc_notification) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) le16_to_cpu(dr->wLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) if (current_size < expected_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) /* notification is transmitted fragmented, reassemble */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (acm->nb_size < expected_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) u8 *new_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) alloc_size = roundup_pow_of_two(expected_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) /* Final freeing is done on disconnect. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) new_buffer = krealloc(acm->notification_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) alloc_size, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (!new_buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) acm->nb_index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) acm->notification_buffer = new_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) acm->nb_size = alloc_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) dr = (struct usb_cdc_notification *)acm->notification_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) copy_size = min(current_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) expected_size - acm->nb_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) memcpy(&acm->notification_buffer[acm->nb_index],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) urb->transfer_buffer, copy_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) acm->nb_index += copy_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) current_size = acm->nb_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (current_size >= expected_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) /* notification complete */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) acm_process_notification(acm, (unsigned char *)dr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) acm->nb_index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) retval = usb_submit_urb(urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) if (retval && retval != -EPERM && retval != -ENODEV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) dev_err(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) "%s - usb_submit_urb failed: %d\n", __func__, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) dev_vdbg(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) "control resubmission terminated %d\n", retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (!test_and_clear_bit(index, &acm->read_urbs_free))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) res = usb_submit_urb(acm->read_urbs[index], mem_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) if (res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) if (res != -EPERM && res != -ENODEV) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) dev_err(&acm->data->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) "urb %d failed submission with %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) index, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) dev_vdbg(&acm->data->dev, "intended failure %d\n", res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) set_bit(index, &acm->read_urbs_free);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) dev_vdbg(&acm->data->dev, "submitted urb %d\n", index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) for (i = 0; i < acm->rx_buflimit; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) res = acm_submit_read_urb(acm, i, mem_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) static void acm_process_read_urb(struct acm *acm, struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (!urb->actual_length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) spin_lock_irqsave(&acm->read_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) tty_insert_flip_string(&acm->port, urb->transfer_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) urb->actual_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) spin_unlock_irqrestore(&acm->read_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) tty_flip_buffer_push(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) static void acm_read_bulk_callback(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) struct acm_rb *rb = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) struct acm *acm = rb->instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) int status = urb->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) bool stopped = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) bool stalled = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) bool cooldown = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) dev_vdbg(&acm->data->dev, "got urb %d, len %d, status %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) rb->index, urb->actual_length, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) usb_mark_last_busy(acm->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) acm_process_read_urb(acm, urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) case -EPIPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) set_bit(EVENT_RX_STALL, &acm->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) stalled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) case -ENOENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) case -ECONNRESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) case -ESHUTDOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) dev_dbg(&acm->data->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) "%s - urb shutting down with status: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) __func__, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) stopped = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) case -EOVERFLOW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) case -EPROTO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) dev_dbg(&acm->data->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) "%s - cooling babbling device\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) usb_mark_last_busy(acm->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) set_bit(rb->index, &acm->urbs_in_error_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) set_bit(ACM_ERROR_DELAY, &acm->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) cooldown = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) dev_dbg(&acm->data->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) "%s - nonzero urb status received: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) __func__, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) * Make sure URB processing is done before marking as free to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) * racing with unthrottle() on another CPU. Matches the barriers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) * implied by the test_and_clear_bit() in acm_submit_read_urb().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) smp_mb__before_atomic();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) set_bit(rb->index, &acm->read_urbs_free);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) * Make sure URB is marked as free before checking the throttled flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) * to avoid racing with unthrottle() on another CPU. Matches the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) * smp_mb() in unthrottle().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) smp_mb__after_atomic();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) if (stopped || stalled || cooldown) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (stalled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) schedule_delayed_work(&acm->dwork, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) else if (cooldown)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) schedule_delayed_work(&acm->dwork, HZ / 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) if (test_bit(ACM_THROTTLED, &acm->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) acm_submit_read_urb(acm, rb->index, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) /* data interface wrote those outgoing bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) static void acm_write_bulk(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) struct acm_wb *wb = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) struct acm *acm = wb->instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) int status = urb->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) if (status || (urb->actual_length != urb->transfer_buffer_length))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) dev_vdbg(&acm->data->dev, "wrote len %d/%d, status %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) urb->actual_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) urb->transfer_buffer_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) spin_lock_irqsave(&acm->write_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) acm_write_done(acm, wb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) spin_unlock_irqrestore(&acm->write_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) set_bit(EVENT_TTY_WAKEUP, &acm->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) schedule_delayed_work(&acm->dwork, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) static void acm_softint(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) struct acm *acm = container_of(work, struct acm, dwork.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (test_bit(EVENT_RX_STALL, &acm->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) smp_mb(); /* against acm_suspend() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if (!acm->susp_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) for (i = 0; i < acm->rx_buflimit; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) usb_kill_urb(acm->read_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) usb_clear_halt(acm->dev, acm->in);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) acm_submit_read_urbs(acm, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) clear_bit(EVENT_RX_STALL, &acm->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if (test_and_clear_bit(ACM_ERROR_DELAY, &acm->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) for (i = 0; i < acm->rx_buflimit; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if (test_and_clear_bit(i, &acm->urbs_in_error_delay))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) acm_submit_read_urb(acm, i, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (test_and_clear_bit(EVENT_TTY_WAKEUP, &acm->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) tty_port_tty_wakeup(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * TTY handlers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) struct acm *acm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) acm = acm_get_by_minor(tty->index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) if (!acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) retval = tty_standard_install(driver, tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) goto error_init_termios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) * Suppress initial echoing for some devices which might send data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * immediately after acm driver has been installed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) if (acm->quirks & DISABLE_ECHO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) tty->termios.c_lflag &= ~ECHO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) tty->driver_data = acm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) error_init_termios:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) tty_port_put(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) static int acm_tty_open(struct tty_struct *tty, struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) return tty_port_open(&acm->port, tty, filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) static void acm_port_dtr_rts(struct tty_port *port, int raise)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) struct acm *acm = container_of(port, struct acm, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) if (raise)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) val = ACM_CTRL_DTR | ACM_CTRL_RTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) /* FIXME: add missing ctrlout locking throughout driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) acm->ctrlout = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) res = acm_set_control(acm, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (res && (acm->ctrl_caps & USB_CDC_CAP_LINE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) /* This is broken in too many devices to spam the logs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) dev_dbg(&acm->control->dev, "failed to set dtr/rts\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) static int acm_port_activate(struct tty_port *port, struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) struct acm *acm = container_of(port, struct acm, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) int retval = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) mutex_lock(&acm->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) if (acm->disconnected)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) goto disconnected;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) retval = usb_autopm_get_interface(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) goto error_get_interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) * FIXME: Why do we need this? Allocating 64K of physically contiguous
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) * memory is really nasty...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) acm->control->needs_remote_wakeup = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) acm->ctrlurb->dev = acm->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) retval = usb_submit_urb(acm->ctrlurb, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) dev_err(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) "%s - usb_submit_urb(ctrl irq) failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) goto error_submit_urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) acm_tty_set_termios(tty, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) * Unthrottle device in case the TTY was closed while throttled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) clear_bit(ACM_THROTTLED, &acm->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) retval = acm_submit_read_urbs(acm, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) goto error_submit_read_urbs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) usb_autopm_put_interface(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) mutex_unlock(&acm->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) error_submit_read_urbs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) for (i = 0; i < acm->rx_buflimit; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) usb_kill_urb(acm->read_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) usb_kill_urb(acm->ctrlurb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) error_submit_urb:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) usb_autopm_put_interface(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) error_get_interface:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) disconnected:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) mutex_unlock(&acm->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) return usb_translate_errors(retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) static void acm_port_destruct(struct tty_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) struct acm *acm = container_of(port, struct acm, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) if (acm->minor != ACM_MINOR_INVALID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) acm_release_minor(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) usb_put_intf(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) kfree(acm->country_codes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) kfree(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) static void acm_port_shutdown(struct tty_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) struct acm *acm = container_of(port, struct acm, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) struct acm_wb *wb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) * Need to grab write_lock to prevent race with resume, but no need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) * hold it due to the tty-port initialised flag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) acm_poison_urbs(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) spin_lock_irq(&acm->write_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) spin_unlock_irq(&acm->write_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) usb_autopm_get_interface_no_resume(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) acm->control->needs_remote_wakeup = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) usb_autopm_put_interface(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) urb = usb_get_from_anchor(&acm->delayed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) if (!urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) wb = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) wb->use = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) usb_autopm_put_interface_async(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) acm_unpoison_urbs(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) static void acm_tty_cleanup(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) tty_port_put(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) static void acm_tty_hangup(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) tty_port_hangup(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) static void acm_tty_close(struct tty_struct *tty, struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) tty_port_close(&acm->port, tty, filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) static int acm_tty_write(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) const unsigned char *buf, int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) int stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) int wbn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) struct acm_wb *wb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) if (!count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) spin_lock_irqsave(&acm->write_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) wbn = acm_wb_alloc(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) if (wbn < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) spin_unlock_irqrestore(&acm->write_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) wb = &acm->wb[wbn];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) if (!acm->dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) wb->use = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) spin_unlock_irqrestore(&acm->write_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) count = (count > acm->writesize) ? acm->writesize : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) dev_vdbg(&acm->data->dev, "writing %d bytes\n", count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) memcpy(wb->buf, buf, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) wb->len = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) stat = usb_autopm_get_interface_async(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) if (stat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) wb->use = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) spin_unlock_irqrestore(&acm->write_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) return stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) if (acm->susp_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) usb_anchor_urb(wb->urb, &acm->delayed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) spin_unlock_irqrestore(&acm->write_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) stat = acm_start_wb(acm, wb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) spin_unlock_irqrestore(&acm->write_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) if (stat < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) return stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) static int acm_tty_write_room(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) * Do not let the line discipline to know that we have a reserve,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) * or it might get too enthusiastic.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) return acm_wb_is_avail(acm) ? acm->writesize : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) static int acm_tty_chars_in_buffer(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) * if the device was unplugged then any remaining characters fell out
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) * of the connector ;)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) if (acm->disconnected)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) * This is inaccurate (overcounts), but it works.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) static void acm_tty_throttle(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) set_bit(ACM_THROTTLED, &acm->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) static void acm_tty_unthrottle(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) clear_bit(ACM_THROTTLED, &acm->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) /* Matches the smp_mb__after_atomic() in acm_read_bulk_callback(). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) smp_mb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) acm_submit_read_urbs(acm, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) static int acm_tty_break_ctl(struct tty_struct *tty, int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) retval = acm_send_break(acm, state ? 0xffff : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) dev_dbg(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) "%s - send break failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) static int acm_tty_tiocmget(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) TIOCM_CTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) static int acm_tty_tiocmset(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) unsigned int set, unsigned int clear)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) unsigned int newctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) newctrl = acm->ctrlout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) (set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) newctrl = (newctrl & ~clear) | set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) if (acm->ctrlout == newctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) return acm_set_control(acm, acm->ctrlout = newctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) static int get_serial_info(struct tty_struct *tty, struct serial_struct *ss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) ss->line = acm->minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) ss->close_delay = jiffies_to_msecs(acm->port.close_delay) / 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) ss->closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) ASYNC_CLOSING_WAIT_NONE :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) jiffies_to_msecs(acm->port.closing_wait) / 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) unsigned int closing_wait, close_delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) int retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) close_delay = msecs_to_jiffies(ss->close_delay * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) ASYNC_CLOSING_WAIT_NONE :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) msecs_to_jiffies(ss->closing_wait * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) mutex_lock(&acm->port.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) if (!capable(CAP_SYS_ADMIN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) if ((close_delay != acm->port.close_delay) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) (closing_wait != acm->port.closing_wait))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) retval = -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) acm->port.close_delay = close_delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) acm->port.closing_wait = closing_wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) mutex_unlock(&acm->port.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) static int wait_serial_change(struct acm *acm, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) int rv = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) DECLARE_WAITQUEUE(wait, current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) struct async_icount old, new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) spin_lock_irq(&acm->read_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) old = acm->oldcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) new = acm->iocount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) acm->oldcount = new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) spin_unlock_irq(&acm->read_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) if ((arg & TIOCM_DSR) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) old.dsr != new.dsr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) if ((arg & TIOCM_CD) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) old.dcd != new.dcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) if ((arg & TIOCM_RI) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) old.rng != new.rng)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) add_wait_queue(&acm->wioctl, &wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) set_current_state(TASK_INTERRUPTIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) schedule();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) remove_wait_queue(&acm->wioctl, &wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) if (acm->disconnected) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) if (arg & TIOCM_CD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) rv = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) if (signal_pending(current))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) rv = -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) } while (!rv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) static int acm_tty_get_icount(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) struct serial_icounter_struct *icount)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) icount->dsr = acm->iocount.dsr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) icount->rng = acm->iocount.rng;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) icount->dcd = acm->iocount.dcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) icount->frame = acm->iocount.frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) icount->overrun = acm->iocount.overrun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) icount->parity = acm->iocount.parity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) icount->brk = acm->iocount.brk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) static int acm_tty_ioctl(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) int rv = -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) case TIOCMIWAIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) rv = usb_autopm_get_interface(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) if (rv < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) rv = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) rv = wait_serial_change(acm, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) usb_autopm_put_interface(acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) static void acm_tty_set_termios(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) struct ktermios *termios_old)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) struct acm *acm = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) struct ktermios *termios = &tty->termios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) struct usb_cdc_line_coding newline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) int newctrl = acm->ctrlout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) newline.bParityType = termios->c_cflag & PARENB ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) (termios->c_cflag & PARODD ? 1 : 2) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) switch (termios->c_cflag & CSIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) case CS5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) newline.bDataBits = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) case CS6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) newline.bDataBits = 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) case CS7:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) newline.bDataBits = 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) case CS8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) newline.bDataBits = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) /* FIXME: Needs to clear unsupported bits in the termios */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) if (C_BAUD(tty) == B0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) newline.dwDTERate = acm->line.dwDTERate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) newctrl &= ~ACM_CTRL_DTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) } else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) newctrl |= ACM_CTRL_DTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) if (newctrl != acm->ctrlout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) acm_set_control(acm, acm->ctrlout = newctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) if (memcmp(&acm->line, &newline, sizeof newline)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) memcpy(&acm->line, &newline, sizeof newline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) le32_to_cpu(newline.dwDTERate),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) newline.bCharFormat, newline.bParityType,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) newline.bDataBits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) acm_set_line(acm, &acm->line);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) static const struct tty_port_operations acm_port_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) .dtr_rts = acm_port_dtr_rts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) .shutdown = acm_port_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) .activate = acm_port_activate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) .destruct = acm_port_destruct,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) * USB probe and disconnect routines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) /* Little helpers: write/read buffers free */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) static void acm_write_buffers_free(struct acm *acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) struct acm_wb *wb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) usb_free_coherent(acm->dev, acm->writesize, wb->buf, wb->dmah);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) static void acm_read_buffers_free(struct acm *acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) for (i = 0; i < acm->rx_buflimit; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) usb_free_coherent(acm->dev, acm->readsize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) acm->read_buffers[i].base, acm->read_buffers[i].dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) /* Little helper: write buffers allocate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) static int acm_write_buffers_alloc(struct acm *acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) struct acm_wb *wb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) &wb->dmah);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) if (!wb->buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) while (i != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) --i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) --wb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) usb_free_coherent(acm->dev, acm->writesize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) wb->buf, wb->dmah);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) static int acm_probe(struct usb_interface *intf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) const struct usb_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) struct usb_cdc_union_desc *union_header = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) struct usb_cdc_call_mgmt_descriptor *cmgmd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) unsigned char *buffer = intf->altsetting->extra;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) int buflen = intf->altsetting->extralen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) struct usb_interface *control_interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) struct usb_interface *data_interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) struct usb_endpoint_descriptor *epctrl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) struct usb_endpoint_descriptor *epread = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) struct usb_endpoint_descriptor *epwrite = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) struct usb_device *usb_dev = interface_to_usbdev(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) struct usb_cdc_parsed_header h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) struct acm *acm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) int minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) int ctrlsize, readsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) u8 *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) int call_intf_num = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) int data_intf_num = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) unsigned long quirks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) int num_rx_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) int combined_interfaces = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) struct device *tty_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) int rv = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) /* normal quirks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) quirks = (unsigned long)id->driver_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) if (quirks == IGNORE_DEVICE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) memset(&h, 0x00, sizeof(struct usb_cdc_parsed_header));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) /* handle quirks deadly to normal probing*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) if (quirks == NO_UNION_NORMAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) data_interface = usb_ifnum_to_if(usb_dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) control_interface = usb_ifnum_to_if(usb_dev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) /* we would crash */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) if (!data_interface || !control_interface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) goto skip_normal_probe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) /* normal probing*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) if (!buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) dev_err(&intf->dev, "Weird descriptor references\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) if (!buflen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) if (intf->cur_altsetting->endpoint &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) intf->cur_altsetting->endpoint->extralen &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) intf->cur_altsetting->endpoint->extra) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) dev_dbg(&intf->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) "Seeking extra descriptors on endpoint\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) buflen = intf->cur_altsetting->endpoint->extralen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) buffer = intf->cur_altsetting->endpoint->extra;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) dev_err(&intf->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) "Zero length descriptor references\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) cdc_parse_cdc_header(&h, intf, buffer, buflen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) union_header = h.usb_cdc_union_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) cmgmd = h.usb_cdc_call_mgmt_descriptor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) if (cmgmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) call_intf_num = cmgmd->bDataInterface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) if (!union_header) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) if (intf->cur_altsetting->desc.bNumEndpoints == 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) dev_dbg(&intf->dev, "No union descriptor, assuming single interface\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) combined_interfaces = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) control_interface = data_interface = intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) goto look_for_collapsed_interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) } else if (call_intf_num > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) data_intf_num = call_intf_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) data_interface = usb_ifnum_to_if(usb_dev, data_intf_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) control_interface = intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) dev_dbg(&intf->dev, "No union descriptor, giving up\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) int class = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) data_intf_num = union_header->bSlaveInterface0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) data_interface = usb_ifnum_to_if(usb_dev, data_intf_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) if (control_interface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) class = control_interface->cur_altsetting->desc.bInterfaceClass;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) if (class != USB_CLASS_COMM && class != USB_CLASS_CDC_DATA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) dev_dbg(&intf->dev, "Broken union descriptor, assuming single interface\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) combined_interfaces = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) control_interface = data_interface = intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) goto look_for_collapsed_interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) if (!control_interface || !data_interface) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) dev_dbg(&intf->dev, "no interfaces\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) if (data_intf_num != call_intf_num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) if (control_interface == data_interface) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) /* some broken devices designed for windows work this way */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) combined_interfaces = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) /* a popular other OS doesn't use it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) quirks |= NO_CAP_LINE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) look_for_collapsed_interface:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) res = usb_find_common_endpoints(data_interface->cur_altsetting,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) &epread, &epwrite, &epctrl, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) if (res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) goto made_compressed_probe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) skip_normal_probe:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) /*workaround for switched interfaces */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) if (data_interface->cur_altsetting->desc.bInterfaceClass != USB_CLASS_CDC_DATA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) if (control_interface->cur_altsetting->desc.bInterfaceClass == USB_CLASS_CDC_DATA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) dev_dbg(&intf->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) "Your device has switched interfaces.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) swap(control_interface, data_interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) /* Accept probe requests only for the control interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) if (!combined_interfaces && intf != control_interface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) if (!combined_interfaces && usb_interface_claimed(data_interface)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) /* valid in this context */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) dev_dbg(&intf->dev, "The data interface isn't available\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) control_interface->cur_altsetting->desc.bNumEndpoints == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) epread = &data_interface->cur_altsetting->endpoint[0].desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) /* workaround for switched endpoints */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) if (!usb_endpoint_dir_in(epread)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) /* descriptors are swapped */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) dev_dbg(&intf->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) "The data interface has switched endpoints\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) swap(epread, epwrite);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) made_compressed_probe:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) dev_dbg(&intf->dev, "interfaces are valid\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) if (acm == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) goto alloc_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) tty_port_init(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) acm->port.ops = &acm_port_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) ctrlsize = usb_endpoint_maxp(epctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) readsize = usb_endpoint_maxp(epread) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) (quirks == SINGLE_RX_URB ? 1 : 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) acm->combined_interfaces = combined_interfaces;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) acm->writesize = usb_endpoint_maxp(epwrite) * 20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) acm->control = control_interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) acm->data = data_interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) usb_get_intf(acm->control); /* undone in destruct() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) minor = acm_alloc_minor(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) if (minor < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) acm->minor = ACM_MINOR_INVALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) goto alloc_fail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) acm->minor = minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) acm->dev = usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) if (h.usb_cdc_acm_descriptor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) acm->ctrl_caps = h.usb_cdc_acm_descriptor->bmCapabilities;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) if (quirks & NO_CAP_LINE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) acm->ctrlsize = ctrlsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) acm->readsize = readsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) acm->rx_buflimit = num_rx_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) INIT_DELAYED_WORK(&acm->dwork, acm_softint);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) init_waitqueue_head(&acm->wioctl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) spin_lock_init(&acm->write_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) spin_lock_init(&acm->read_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) mutex_init(&acm->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) if (usb_endpoint_xfer_int(epread)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) acm->bInterval = epread->bInterval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) acm->in = usb_rcvintpipe(usb_dev, epread->bEndpointAddress);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) acm->in = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) if (usb_endpoint_xfer_int(epwrite))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) acm->out = usb_sndintpipe(usb_dev, epwrite->bEndpointAddress);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) acm->out = usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) init_usb_anchor(&acm->delayed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) acm->quirks = quirks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) goto alloc_fail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) acm->ctrl_buffer = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) if (acm_write_buffers_alloc(acm) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) goto alloc_fail2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) if (!acm->ctrlurb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) goto alloc_fail3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) for (i = 0; i < num_rx_buf; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) struct acm_rb *rb = &(acm->read_buffers[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) &rb->dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) if (!rb->base)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) goto alloc_fail4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) rb->index = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) rb->instance = acm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) urb = usb_alloc_urb(0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) if (!urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) goto alloc_fail4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) urb->transfer_dma = rb->dma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) if (usb_endpoint_xfer_int(epread))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) usb_fill_int_urb(urb, acm->dev, acm->in, rb->base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) acm->readsize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) acm_read_bulk_callback, rb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) acm->bInterval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) usb_fill_bulk_urb(urb, acm->dev, acm->in, rb->base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) acm->readsize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) acm_read_bulk_callback, rb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) acm->read_urbs[i] = urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) __set_bit(i, &acm->read_urbs_free);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) for (i = 0; i < ACM_NW; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) struct acm_wb *snd = &(acm->wb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) snd->urb = usb_alloc_urb(0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) if (snd->urb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) goto alloc_fail5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) if (usb_endpoint_xfer_int(epwrite))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) usb_fill_int_urb(snd->urb, usb_dev, acm->out,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) usb_fill_bulk_urb(snd->urb, usb_dev, acm->out,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) NULL, acm->writesize, acm_write_bulk, snd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) if (quirks & SEND_ZERO_PACKET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) snd->urb->transfer_flags |= URB_ZERO_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) snd->instance = acm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) usb_set_intfdata(intf, acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) if (i < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) goto alloc_fail5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) if (h.usb_cdc_country_functional_desc) { /* export the country data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) struct usb_cdc_country_functional_desc * cfd =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) h.usb_cdc_country_functional_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) if (!acm->country_codes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) goto skip_countries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) acm->country_code_size = cfd->bLength - 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) cfd->bLength - 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) acm->country_rel_date = cfd->iCountryCodeRelDate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) if (i < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) kfree(acm->country_codes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) acm->country_codes = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) acm->country_code_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) goto skip_countries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) i = device_create_file(&intf->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) &dev_attr_iCountryCodeRelDate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) if (i < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) kfree(acm->country_codes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) acm->country_codes = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) acm->country_code_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) goto skip_countries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) skip_countries:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) usb_fill_int_urb(acm->ctrlurb, usb_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) /* works around buggy devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) epctrl->bInterval ? epctrl->bInterval : 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) acm->ctrlurb->transfer_dma = acm->ctrl_dma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) acm->notification_buffer = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) acm->nb_index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) acm->nb_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) acm->line.dwDTERate = cpu_to_le32(9600);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) acm->line.bDataBits = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) acm_set_line(acm, &acm->line);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) usb_driver_claim_interface(&acm_driver, data_interface, acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) usb_set_intfdata(data_interface, acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) &control_interface->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) if (IS_ERR(tty_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) rv = PTR_ERR(tty_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) goto alloc_fail6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) if (quirks & CLEAR_HALT_CONDITIONS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) usb_clear_halt(usb_dev, acm->in);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) usb_clear_halt(usb_dev, acm->out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) alloc_fail6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) if (!acm->combined_interfaces) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) /* Clear driver data so that disconnect() returns early. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) usb_set_intfdata(data_interface, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) usb_driver_release_interface(&acm_driver, data_interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) if (acm->country_codes) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) device_remove_file(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) &dev_attr_wCountryCodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) device_remove_file(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) &dev_attr_iCountryCodeRelDate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) alloc_fail5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) usb_set_intfdata(intf, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) for (i = 0; i < ACM_NW; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) usb_free_urb(acm->wb[i].urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) alloc_fail4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) for (i = 0; i < num_rx_buf; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) usb_free_urb(acm->read_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) acm_read_buffers_free(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) usb_free_urb(acm->ctrlurb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) alloc_fail3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) acm_write_buffers_free(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) alloc_fail2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) alloc_fail1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) tty_port_put(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) alloc_fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) static void acm_disconnect(struct usb_interface *intf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) struct acm *acm = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) struct tty_struct *tty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) /* sibling interface is already cleaning up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) if (!acm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) acm->disconnected = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) * there is a circular dependency. acm_softint() can resubmit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) * the URBs in error handling so we need to block any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) * submission right away
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) acm_poison_urbs(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) mutex_lock(&acm->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) if (acm->country_codes) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) device_remove_file(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) &dev_attr_wCountryCodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) device_remove_file(&acm->control->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) &dev_attr_iCountryCodeRelDate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) wake_up_all(&acm->wioctl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) usb_set_intfdata(acm->control, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) usb_set_intfdata(acm->data, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) mutex_unlock(&acm->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) tty = tty_port_tty_get(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) if (tty) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) tty_vhangup(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) tty_kref_put(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) cancel_delayed_work_sync(&acm->dwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) tty_unregister_device(acm_tty_driver, acm->minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) usb_free_urb(acm->ctrlurb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) for (i = 0; i < ACM_NW; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) usb_free_urb(acm->wb[i].urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) for (i = 0; i < acm->rx_buflimit; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) usb_free_urb(acm->read_urbs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) acm_write_buffers_free(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) usb_free_coherent(acm->dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) acm_read_buffers_free(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) kfree(acm->notification_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) if (!acm->combined_interfaces)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) usb_driver_release_interface(&acm_driver, intf == acm->control ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) acm->data : acm->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) tty_port_put(&acm->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) static int acm_suspend(struct usb_interface *intf, pm_message_t message)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) struct acm *acm = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) int cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) spin_lock_irq(&acm->write_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) if (PMSG_IS_AUTO(message)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) if (acm->transmitting) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) spin_unlock_irq(&acm->write_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) cnt = acm->susp_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) spin_unlock_irq(&acm->write_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) if (cnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) acm_poison_urbs(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) cancel_delayed_work_sync(&acm->dwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) acm->urbs_in_error_delay = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) static int acm_resume(struct usb_interface *intf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) struct acm *acm = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) int rv = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) spin_lock_irq(&acm->write_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) if (--acm->susp_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) acm_unpoison_urbs(acm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) if (tty_port_initialized(&acm->port)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) urb = usb_get_from_anchor(&acm->delayed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) if (!urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) acm_start_wb(acm, urb->context);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) * delayed error checking because we must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) * do the write path at all cost
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) if (rv < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) rv = acm_submit_read_urbs(acm, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) spin_unlock_irq(&acm->write_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) static int acm_reset_resume(struct usb_interface *intf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) struct acm *acm = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) if (tty_port_initialized(&acm->port))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) tty_port_tty_hangup(&acm->port, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) return acm_resume(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) #endif /* CONFIG_PM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) static int acm_pre_reset(struct usb_interface *intf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) struct acm *acm = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) clear_bit(EVENT_RX_STALL, &acm->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) acm->nb_index = 0; /* pending control transfers are lost */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) #define NOKIA_PCSUITE_ACM_INFO(x) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) USB_CDC_ACM_PROTO_VENDOR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) #define SAMSUNG_PCSUITE_ACM_INFO(x) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) USB_CDC_ACM_PROTO_VENDOR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) * USB driver structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) static const struct usb_device_id acm_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) /* quirky and broken devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) { USB_DEVICE(0x0424, 0x274e), /* Microchip Technology, Inc. (formerly SMSC) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) .driver_info = DISABLE_ECHO, }, /* DISABLE ECHO in termios flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) { USB_DEVICE(0x076d, 0x0006), /* Denso Cradle CU-321 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) { USB_DEVICE(0x045b, 0x023c), /* Renesas USB Download mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) .driver_info = DISABLE_ECHO, /* Don't echo banner */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) { USB_DEVICE(0x045b, 0x0248), /* Renesas USB Download mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) .driver_info = DISABLE_ECHO, /* Don't echo banner */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) { USB_DEVICE(0x045b, 0x024D), /* Renesas USB Download mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) .driver_info = DISABLE_ECHO, /* Don't echo banner */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) { USB_DEVICE(0x0e8d, 0x2000), /* MediaTek Inc Preloader */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) .driver_info = DISABLE_ECHO, /* DISABLE ECHO in termios flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) .driver_info = SINGLE_RX_URB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) .driver_info = SINGLE_RX_URB, /* firmware bug */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) .driver_info = SINGLE_RX_URB, /* firmware bug */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) { USB_DEVICE(0x11ca, 0x0201), /* VeriFone Mx870 Gadget Serial */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) .driver_info = SINGLE_RX_URB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) { USB_DEVICE(0x1965, 0x0018), /* Uniden UBC125XLT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) { USB_DEVICE(0x0572, 0x1349), /* Hiro (Conexant) USB MODEM H50228 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) { USB_DEVICE(0x20df, 0x0001), /* Simtec Electronics Entropy Key */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) .driver_info = QUIRK_CONTROL_LINE_STATE, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) { USB_DEVICE(0x2184, 0x0036) }, /* GW Instek AFG-125 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) /* Motorola H24 HSPA module: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) data interface instead of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) communications interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) Maybe we should define a new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) quirk for this. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) .driver_info = NO_UNION_NORMAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) .driver_info = NO_UNION_NORMAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) { USB_DEVICE(0xfff0, 0x0100), /* DATECS FP-2000 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) { USB_DEVICE(0x09d8, 0x0320), /* Elatec GmbH TWN3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) .driver_info = NO_UNION_NORMAL, /* has misplaced union descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) { USB_DEVICE(0x0ca6, 0xa050), /* Castles VEGA3000 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) .driver_info = CLEAR_HALT_CONDITIONS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) /* Nokia S60 phones expose two ACM channels. The first is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) * a modem and is picked up by the standard AT-command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) * information below. The second is 'vendor-specific' but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) * is treated as a serial device at the S60 end, so we want
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) * to expose it on Linux too. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) /* Support for Owen devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) #if IS_ENABLED(CONFIG_INPUT_IMS_PCU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) { USB_DEVICE(0x04d8, 0x0082), /* Application mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) { USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) #if IS_ENABLED(CONFIG_IR_TOY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) { USB_DEVICE(0x04d8, 0xfd08),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) { USB_DEVICE(0x04d8, 0xf58b),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) /*Samsung phone in firmware update mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) { USB_DEVICE(0x04e8, 0x685d),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) /* Exclude Infineon Flash Loader utility */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) { USB_DEVICE(0x058b, 0x0041),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) /* Exclude ETAS ES58x */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) { USB_DEVICE(0x108c, 0x0159), /* ES581.4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) { USB_DEVICE(0x108c, 0x0168), /* ES582.1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) { USB_DEVICE(0x108c, 0x0169), /* ES584.1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) { USB_DEVICE(0x1bc7, 0x0021), /* Telit 3G ACM only composition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) .driver_info = SEND_ZERO_PACKET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) { USB_DEVICE(0x1bc7, 0x0023), /* Telit 3G ACM + ECM composition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) .driver_info = SEND_ZERO_PACKET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) /* Exclude Goodix Fingerprint Reader */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) { USB_DEVICE(0x27c6, 0x5395),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) /* Exclude Heimann Sensor GmbH USB appset demo */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) { USB_DEVICE(0x32a7, 0x0000),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) .driver_info = IGNORE_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) /* control interfaces without any protocol set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) USB_CDC_PROTO_NONE) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) /* control interfaces with various AT-command sets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) USB_CDC_ACM_PROTO_AT_V25TER) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) USB_CDC_ACM_PROTO_AT_PCCA101) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) USB_CDC_ACM_PROTO_AT_GSM) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) USB_CDC_ACM_PROTO_AT_3G) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) USB_CDC_ACM_PROTO_AT_CDMA) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) { USB_DEVICE(0x1519, 0x0452), /* Intel 7260 modem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) .driver_info = SEND_ZERO_PACKET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) MODULE_DEVICE_TABLE(usb, acm_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) static struct usb_driver acm_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) .name = "cdc_acm",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) .probe = acm_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) .disconnect = acm_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) .suspend = acm_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) .resume = acm_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) .reset_resume = acm_reset_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) .pre_reset = acm_pre_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) .id_table = acm_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) .supports_autosuspend = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) .disable_hub_initiated_lpm = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) * TTY driver structures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) static const struct tty_operations acm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) .install = acm_tty_install,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) .open = acm_tty_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) .close = acm_tty_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) .cleanup = acm_tty_cleanup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) .hangup = acm_tty_hangup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) .write = acm_tty_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) .write_room = acm_tty_write_room,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) .ioctl = acm_tty_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) .throttle = acm_tty_throttle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) .unthrottle = acm_tty_unthrottle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) .chars_in_buffer = acm_tty_chars_in_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) .break_ctl = acm_tty_break_ctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) .set_termios = acm_tty_set_termios,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) .tiocmget = acm_tty_tiocmget,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) .tiocmset = acm_tty_tiocmset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) .get_serial = get_serial_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) .set_serial = set_serial_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) .get_icount = acm_tty_get_icount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) * Init / exit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) static int __init acm_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) if (!acm_tty_driver)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) acm_tty_driver->driver_name = "acm",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) acm_tty_driver->name = "ttyACM",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) acm_tty_driver->major = ACM_TTY_MAJOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) acm_tty_driver->minor_start = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) acm_tty_driver->init_termios = tty_std_termios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) HUPCL | CLOCAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) tty_set_operations(acm_tty_driver, &acm_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) retval = tty_register_driver(acm_tty_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) put_tty_driver(acm_tty_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) retval = usb_register(&acm_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) tty_unregister_driver(acm_tty_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) put_tty_driver(acm_tty_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) static void __exit acm_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) usb_deregister(&acm_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) tty_unregister_driver(acm_tty_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) put_tty_driver(acm_tty_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) idr_destroy(&acm_minors);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) module_init(acm_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) module_exit(acm_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) MODULE_AUTHOR(DRIVER_AUTHOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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