^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) * USB Empeg empeg-car player driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2000, 2001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Gary Brubaker (xavyer@ix.netcom.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 1999 - 2001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Greg Kroah-Hartman (greg@kroah.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * See Documentation/usb/usb-serial.rst for more information on using this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/tty_driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/tty_flip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/usb/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define DRIVER_DESC "USB Empeg Mark I/II Driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define EMPEG_VENDOR_ID 0x084f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define EMPEG_PRODUCT_ID 0x0001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* function prototypes for an empeg-car player */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int empeg_startup(struct usb_serial *serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static void empeg_init_termios(struct tty_struct *tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static const struct usb_device_id id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) { USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) { } /* Terminating entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) MODULE_DEVICE_TABLE(usb, id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static struct usb_serial_driver empeg_device = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) .name = "empeg",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) .id_table = id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) .num_ports = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) .bulk_out_size = 256,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) .throttle = usb_serial_generic_throttle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) .unthrottle = usb_serial_generic_unthrottle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .attach = empeg_startup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) .init_termios = empeg_init_termios,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static struct usb_serial_driver * const serial_drivers[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) &empeg_device, NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static int empeg_startup(struct usb_serial *serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) serial->dev->actconfig->desc.bConfigurationValue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) r = usb_reset_configuration(serial->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* continue on with initialization */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static void empeg_init_termios(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct ktermios *termios = &tty->termios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * The empeg-car player wants these particular tty settings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * You could, for example, change the baud rate, however the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * player only supports 115200 (currently), so there is really
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * no point in support for changes to the tty settings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * (at least for now)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * The default requirements for this device are:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) termios->c_iflag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) &= ~(IGNBRK /* disable ignore break */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) | BRKINT /* disable break causes interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) | PARMRK /* disable mark parity errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) | ISTRIP /* disable clear high bit of input characters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) | INLCR /* disable translate NL to CR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) | IGNCR /* disable ignore CR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) | ICRNL /* disable translate CR to NL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) | IXON); /* disable enable XON/XOFF flow control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) termios->c_oflag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) &= ~OPOST; /* disable postprocess output characters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) termios->c_lflag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) &= ~(ECHO /* disable echo input characters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) | ECHONL /* disable echo new line */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) | ICANON /* disable erase, kill, werase, and rprnt special characters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) | ISIG /* disable interrupt, quit, and suspend special characters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) | IEXTEN); /* disable non-POSIX special characters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) termios->c_cflag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) &= ~(CSIZE /* no size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) | PARENB /* disable parity bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) | CBAUD); /* clear current baud rate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) termios->c_cflag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) |= CS8; /* character size 8 bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) tty_encode_baud_rate(tty, 115200, 115200);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) module_usb_serial_driver(serial_drivers, id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) MODULE_AUTHOR(DRIVER_AUTHOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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