// SPDX-License-Identifier: GPL-2.0 /* * Renesas Electronics uPD78F0730 USB to serial converter driver * * Copyright (C) 2014,2016 Maksim Salau <[email protected]> * * Protocol of the adaptor is described in the application note U19660EJ1V0AN00 * μPD78F0730 8-bit Single-Chip Microcontroller * USB-to-Serial Conversion Software * <https://www.renesas.com/en-eu/doc/DocumentServer/026/U19660EJ1V0AN00.pdf> * * The adaptor functionality is limited to the following: * - data bits: 7 or 8 * - stop bits: 1 or 2 * - parity: even, odd or none * - flow control: none * - baud rates: 0, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 153600 * - signals: DTR, RTS and BREAK */ #include <linux/module.h> #include <linux/slab.h> #include <linux/tty.h> #include <linux/usb.h> #include <linux/usb/serial.h> #define DRIVER_DESC … #define DRIVER_AUTHOR … static const struct usb_device_id id_table[] = …; MODULE_DEVICE_TABLE(usb, id_table); /* * Each adaptor is associated with a private structure, that holds the current * state of control signals (DTR, RTS and BREAK). */ struct upd78f0730_port_private { … }; /* Op-codes of control commands */ #define UPD78F0730_CMD_LINE_CONTROL … #define UPD78F0730_CMD_SET_DTR_RTS … #define UPD78F0730_CMD_SET_XON_XOFF_CHR … #define UPD78F0730_CMD_OPEN_CLOSE … #define UPD78F0730_CMD_SET_ERR_CHR … /* Data sizes in UPD78F0730_CMD_LINE_CONTROL command */ #define UPD78F0730_DATA_SIZE_7_BITS … #define UPD78F0730_DATA_SIZE_8_BITS … #define UPD78F0730_DATA_SIZE_MASK … /* Stop-bit modes in UPD78F0730_CMD_LINE_CONTROL command */ #define UPD78F0730_STOP_BIT_1_BIT … #define UPD78F0730_STOP_BIT_2_BIT … #define UPD78F0730_STOP_BIT_MASK … /* Parity modes in UPD78F0730_CMD_LINE_CONTROL command */ #define UPD78F0730_PARITY_NONE … #define UPD78F0730_PARITY_EVEN … #define UPD78F0730_PARITY_ODD … #define UPD78F0730_PARITY_MASK … /* Flow control modes in UPD78F0730_CMD_LINE_CONTROL command */ #define UPD78F0730_FLOW_CONTROL_NONE … #define UPD78F0730_FLOW_CONTROL_HW … #define UPD78F0730_FLOW_CONTROL_SW … #define UPD78F0730_FLOW_CONTROL_MASK … /* Control signal bits in UPD78F0730_CMD_SET_DTR_RTS command */ #define UPD78F0730_RTS … #define UPD78F0730_DTR … #define UPD78F0730_BREAK … /* Port modes in UPD78F0730_CMD_OPEN_CLOSE command */ #define UPD78F0730_PORT_CLOSE … #define UPD78F0730_PORT_OPEN … /* Error character substitution modes in UPD78F0730_CMD_SET_ERR_CHR command */ #define UPD78F0730_ERR_CHR_DISABLED … #define UPD78F0730_ERR_CHR_ENABLED … /* * Declaration of command structures */ /* UPD78F0730_CMD_LINE_CONTROL command */ struct upd78f0730_line_control { … } __packed; /* UPD78F0730_CMD_SET_DTR_RTS command */ struct upd78f0730_set_dtr_rts { … }; /* UPD78F0730_CMD_SET_XON_OFF_CHR command */ struct upd78f0730_set_xon_xoff_chr { … }; /* UPD78F0730_CMD_OPEN_CLOSE command */ struct upd78f0730_open_close { … }; /* UPD78F0730_CMD_SET_ERR_CHR command */ struct upd78f0730_set_err_chr { … }; static int upd78f0730_send_ctl(struct usb_serial_port *port, const void *data, int size) { … } static int upd78f0730_port_probe(struct usb_serial_port *port) { … } static void upd78f0730_port_remove(struct usb_serial_port *port) { … } static int upd78f0730_tiocmget(struct tty_struct *tty) { … } static int upd78f0730_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { … } static int upd78f0730_break_ctl(struct tty_struct *tty, int break_state) { … } static void upd78f0730_dtr_rts(struct usb_serial_port *port, int on) { … } static speed_t upd78f0730_get_baud_rate(struct tty_struct *tty) { … } static void upd78f0730_set_termios(struct tty_struct *tty, struct usb_serial_port *port, const struct ktermios *old_termios) { … } static int upd78f0730_open(struct tty_struct *tty, struct usb_serial_port *port) { … } static void upd78f0730_close(struct usb_serial_port *port) { … } static struct usb_serial_driver upd78f0730_device = …; static struct usb_serial_driver * const serial_drivers[] = …; module_usb_serial_driver(…); MODULE_DESCRIPTION(…); MODULE_AUTHOR(…); MODULE_LICENSE(…) …;
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