| /* |
| * spcp8x5 USB to serial adaptor driver |
| * |
| * Copyright (C) 2010-2013 Johan Hovold (jhovold@gmail.com) |
| * Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn) |
| * Copyright (C) 2006 S1 Corp. |
| * |
| * Original driver for 2.6.10 pl2303 driver by |
| * Greg Kroah-Hartman (greg@kroah.com) |
| * Changes for 2.6.20 by Harald Klein <hari@vt100.at> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/slab.h> |
| #include <linux/tty.h> |
| #include <linux/tty_driver.h> |
| #include <linux/tty_flip.h> |
| #include <linux/module.h> |
| #include <linux/spinlock.h> |
| #include <linux/usb.h> |
| #include <linux/usb/serial.h> |
| |
| #define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver" |
| |
| #define SPCP825_QUIRK_NO_UART_STATUS 0x01 |
| #define SPCP825_QUIRK_NO_WORK_MODE 0x02 |
| |
| #define SPCP8x5_007_VID 0x04FC |
| #define SPCP8x5_007_PID 0x0201 |
| #define SPCP8x5_008_VID 0x04fc |
| #define SPCP8x5_008_PID 0x0235 |
| #define SPCP8x5_PHILIPS_VID 0x0471 |
| #define SPCP8x5_PHILIPS_PID 0x081e |
| #define SPCP8x5_INTERMATIC_VID 0x04FC |
| #define SPCP8x5_INTERMATIC_PID 0x0204 |
| #define SPCP8x5_835_VID 0x04fc |
| #define SPCP8x5_835_PID 0x0231 |
| |
| static const struct usb_device_id id_table[] = { |
| { USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)}, |
| { USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)}, |
| { USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)}, |
| { USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)}, |
| { USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID), |
| .driver_info = SPCP825_QUIRK_NO_UART_STATUS | |
| SPCP825_QUIRK_NO_WORK_MODE }, |
| { } /* Terminating entry */ |
| }; |
| MODULE_DEVICE_TABLE(usb, id_table); |
| |
| struct spcp8x5_usb_ctrl_arg { |
| u8 type; |
| u8 cmd; |
| u8 cmd_type; |
| u16 value; |
| u16 index; |
| u16 length; |
| }; |
| |
| |
| /* spcp8x5 spec register define */ |
| #define MCR_CONTROL_LINE_RTS 0x02 |
| #define MCR_CONTROL_LINE_DTR 0x01 |
| #define MCR_DTR 0x01 |
| #define MCR_RTS 0x02 |
| |
| #define MSR_STATUS_LINE_DCD 0x80 |
| #define MSR_STATUS_LINE_RI 0x40 |
| #define MSR_STATUS_LINE_DSR 0x20 |
| #define MSR_STATUS_LINE_CTS 0x10 |
| |
| /* verdor command here , we should define myself */ |
| #define SET_DEFAULT 0x40 |
| #define SET_DEFAULT_TYPE 0x20 |
| |
| #define SET_UART_FORMAT 0x40 |
| #define SET_UART_FORMAT_TYPE 0x21 |
| #define SET_UART_FORMAT_SIZE_5 0x00 |
| #define SET_UART_FORMAT_SIZE_6 0x01 |
| #define SET_UART_FORMAT_SIZE_7 0x02 |
| #define SET_UART_FORMAT_SIZE_8 0x03 |
| #define SET_UART_FORMAT_STOP_1 0x00 |
| #define SET_UART_FORMAT_STOP_2 0x04 |
| #define SET_UART_FORMAT_PAR_NONE 0x00 |
| #define SET_UART_FORMAT_PAR_ODD 0x10 |
| #define SET_UART_FORMAT_PAR_EVEN 0x30 |
| #define SET_UART_FORMAT_PAR_MASK 0xD0 |
| #define SET_UART_FORMAT_PAR_SPACE 0x90 |
| |
| #define GET_UART_STATUS_TYPE 0xc0 |
| #define GET_UART_STATUS 0x22 |
| #define GET_UART_STATUS_MSR 0x06 |
| |
| #define SET_UART_STATUS 0x40 |
| #define SET_UART_STATUS_TYPE 0x23 |
| #define SET_UART_STATUS_MCR 0x0004 |
| #define SET_UART_STATUS_MCR_DTR 0x01 |
| #define SET_UART_STATUS_MCR_RTS 0x02 |
| #define SET_UART_STATUS_MCR_LOOP 0x10 |
| |
| #define SET_WORKING_MODE 0x40 |
| #define SET_WORKING_MODE_TYPE 0x24 |
| #define SET_WORKING_MODE_U2C 0x00 |
| #define SET_WORKING_MODE_RS485 0x01 |
| #define SET_WORKING_MODE_PDMA 0x02 |
| #define SET_WORKING_MODE_SPP 0x03 |
| |
| #define SET_FLOWCTL_CHAR 0x40 |
| #define SET_FLOWCTL_CHAR_TYPE 0x25 |
| |
| #define GET_VERSION 0xc0 |
| #define GET_VERSION_TYPE 0x26 |
| |
| #define SET_REGISTER 0x40 |
| #define SET_REGISTER_TYPE 0x27 |
| |
| #define GET_REGISTER 0xc0 |
| #define GET_REGISTER_TYPE 0x28 |
| |
| #define SET_RAM 0x40 |
| #define SET_RAM_TYPE 0x31 |
| |
| #define GET_RAM 0xc0 |
| #define GET_RAM_TYPE 0x32 |
| |
| /* how come ??? */ |
| #define UART_STATE 0x08 |
| #define UART_STATE_TRANSIENT_MASK 0x75 |
| #define UART_DCD 0x01 |
| #define UART_DSR 0x02 |
| #define UART_BREAK_ERROR 0x04 |
| #define UART_RING 0x08 |
| #define UART_FRAME_ERROR 0x10 |
| #define UART_PARITY_ERROR 0x20 |
| #define UART_OVERRUN_ERROR 0x40 |
| #define UART_CTS 0x80 |
| |
| struct spcp8x5_private { |
| unsigned quirks; |
| spinlock_t lock; |
| u8 line_control; |
| }; |
| |
| static int spcp8x5_probe(struct usb_serial *serial, |
| const struct usb_device_id *id) |
| { |
| usb_set_serial_data(serial, (void *)id); |
| |
| return 0; |
| } |
| |
| static int spcp8x5_port_probe(struct usb_serial_port *port) |
| { |
| const struct usb_device_id *id = usb_get_serial_data(port->serial); |
| struct spcp8x5_private *priv; |
| |
| priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
| if (!priv) |
| return -ENOMEM; |
| |
| spin_lock_init(&priv->lock); |
| priv->quirks = id->driver_info; |
| |
| usb_set_serial_port_data(port, priv); |
| |
| port->port.drain_delay = 256; |
| |
| return 0; |
| } |
| |
| static int spcp8x5_port_remove(struct usb_serial_port *port) |
| { |
| struct spcp8x5_private *priv; |
| |
| priv = usb_get_serial_port_data(port); |
| kfree(priv); |
| |
| return 0; |
| } |
| |
| static int spcp8x5_set_ctrl_line(struct usb_serial_port *port, u8 mcr) |
| { |
| struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
| struct usb_device *dev = port->serial->dev; |
| int retval; |
| |
| if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS) |
| return -EPERM; |
| |
| retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| SET_UART_STATUS_TYPE, SET_UART_STATUS, |
| mcr, 0x04, NULL, 0, 100); |
| if (retval != 0) { |
| dev_err(&port->dev, "failed to set control lines: %d\n", |
| retval); |
| } |
| return retval; |
| } |
| |
| static int spcp8x5_get_msr(struct usb_serial_port *port, u8 *status) |
| { |
| struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
| struct usb_device *dev = port->serial->dev; |
| u8 *buf; |
| int ret; |
| |
| if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS) |
| return -EPERM; |
| |
| buf = kzalloc(1, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), |
| GET_UART_STATUS, GET_UART_STATUS_TYPE, |
| 0, GET_UART_STATUS_MSR, buf, 1, 100); |
| if (ret < 0) |
| dev_err(&port->dev, "failed to get modem status: %d", ret); |
| |
| dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x", ret, *buf); |
| *status = *buf; |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static void spcp8x5_set_work_mode(struct usb_serial_port *port, u16 value, |
| u16 index) |
| { |
| struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
| struct usb_device *dev = port->serial->dev; |
| int ret; |
| |
| if (priv->quirks & SPCP825_QUIRK_NO_WORK_MODE) |
| return; |
| |
| ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| SET_WORKING_MODE_TYPE, SET_WORKING_MODE, |
| value, index, NULL, 0, 100); |
| dev_dbg(&port->dev, "value = %#x , index = %#x\n", value, index); |
| if (ret < 0) |
| dev_err(&port->dev, "failed to set work mode: %d\n", ret); |
| } |
| |
| static int spcp8x5_carrier_raised(struct usb_serial_port *port) |
| { |
| u8 msr; |
| int ret; |
| |
| ret = spcp8x5_get_msr(port, &msr); |
| if (ret || msr & MSR_STATUS_LINE_DCD) |
| return 1; |
| |
| return 0; |
| } |
| |
| static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on) |
| { |
| struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
| unsigned long flags; |
| u8 control; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (on) |
| priv->line_control = MCR_CONTROL_LINE_DTR |
| | MCR_CONTROL_LINE_RTS; |
| else |
| priv->line_control &= ~ (MCR_CONTROL_LINE_DTR |
| | MCR_CONTROL_LINE_RTS); |
| control = priv->line_control; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| spcp8x5_set_ctrl_line(port, control); |
| } |
| |
| static void spcp8x5_init_termios(struct tty_struct *tty) |
| { |
| tty->termios = tty_std_termios; |
| tty->termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL; |
| tty->termios.c_ispeed = 115200; |
| tty->termios.c_ospeed = 115200; |
| } |
| |
| static void spcp8x5_set_termios(struct tty_struct *tty, |
| struct usb_serial_port *port, struct ktermios *old_termios) |
| { |
| struct usb_serial *serial = port->serial; |
| struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
| unsigned long flags; |
| unsigned int cflag = tty->termios.c_cflag; |
| unsigned short uartdata; |
| unsigned char buf[2] = {0, 0}; |
| int baud; |
| int i; |
| u8 control; |
| |
| /* check that they really want us to change something */ |
| if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) |
| return; |
| |
| /* set DTR/RTS active */ |
| spin_lock_irqsave(&priv->lock, flags); |
| control = priv->line_control; |
| if (old_termios && (old_termios->c_cflag & CBAUD) == B0) { |
| priv->line_control |= MCR_DTR; |
| if (!(old_termios->c_cflag & CRTSCTS)) |
| priv->line_control |= MCR_RTS; |
| } |
| if (control != priv->line_control) { |
| control = priv->line_control; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| spcp8x5_set_ctrl_line(port, control); |
| } else { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| /* Set Baud Rate */ |
| baud = tty_get_baud_rate(tty); |
| switch (baud) { |
| case 300: buf[0] = 0x00; break; |
| case 600: buf[0] = 0x01; break; |
| case 1200: buf[0] = 0x02; break; |
| case 2400: buf[0] = 0x03; break; |
| case 4800: buf[0] = 0x04; break; |
| case 9600: buf[0] = 0x05; break; |
| case 19200: buf[0] = 0x07; break; |
| case 38400: buf[0] = 0x09; break; |
| case 57600: buf[0] = 0x0a; break; |
| case 115200: buf[0] = 0x0b; break; |
| case 230400: buf[0] = 0x0c; break; |
| case 460800: buf[0] = 0x0d; break; |
| case 921600: buf[0] = 0x0e; break; |
| /* case 1200000: buf[0] = 0x0f; break; */ |
| /* case 2400000: buf[0] = 0x10; break; */ |
| case 3000000: buf[0] = 0x11; break; |
| /* case 6000000: buf[0] = 0x12; break; */ |
| case 0: |
| case 1000000: |
| buf[0] = 0x0b; break; |
| default: |
| dev_err(&port->dev, "spcp825 driver does not support the " |
| "baudrate requested, using default of 9600.\n"); |
| } |
| |
| /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */ |
| switch (cflag & CSIZE) { |
| case CS5: |
| buf[1] |= SET_UART_FORMAT_SIZE_5; |
| break; |
| case CS6: |
| buf[1] |= SET_UART_FORMAT_SIZE_6; |
| break; |
| case CS7: |
| buf[1] |= SET_UART_FORMAT_SIZE_7; |
| break; |
| default: |
| case CS8: |
| buf[1] |= SET_UART_FORMAT_SIZE_8; |
| break; |
| } |
| |
| /* Set Stop bit2 : 0:1bit 1:2bit */ |
| buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 : |
| SET_UART_FORMAT_STOP_1; |
| |
| /* Set Parity bit3-4 01:Odd 11:Even */ |
| if (cflag & PARENB) { |
| buf[1] |= (cflag & PARODD) ? |
| SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ; |
| } else { |
| buf[1] |= SET_UART_FORMAT_PAR_NONE; |
| } |
| uartdata = buf[0] | buf[1]<<8; |
| |
| i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| SET_UART_FORMAT_TYPE, SET_UART_FORMAT, |
| uartdata, 0, NULL, 0, 100); |
| if (i < 0) |
| dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n", |
| uartdata, i); |
| dev_dbg(&port->dev, "0x21:0x40:0:0 %d\n", i); |
| |
| if (cflag & CRTSCTS) { |
| /* enable hardware flow control */ |
| spcp8x5_set_work_mode(port, 0x000a, SET_WORKING_MODE_U2C); |
| } |
| } |
| |
| static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) |
| { |
| struct usb_serial *serial = port->serial; |
| struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
| int ret; |
| |
| usb_clear_halt(serial->dev, port->write_urb->pipe); |
| usb_clear_halt(serial->dev, port->read_urb->pipe); |
| |
| ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| 0x09, 0x00, |
| 0x01, 0x00, NULL, 0x00, 100); |
| if (ret) |
| return ret; |
| |
| spcp8x5_set_ctrl_line(port, priv->line_control); |
| |
| if (tty) |
| spcp8x5_set_termios(tty, port, NULL); |
| |
| return usb_serial_generic_open(tty, port); |
| } |
| |
| static int spcp8x5_tiocmset(struct tty_struct *tty, |
| unsigned int set, unsigned int clear) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
| unsigned long flags; |
| u8 control; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (set & TIOCM_RTS) |
| priv->line_control |= MCR_RTS; |
| if (set & TIOCM_DTR) |
| priv->line_control |= MCR_DTR; |
| if (clear & TIOCM_RTS) |
| priv->line_control &= ~MCR_RTS; |
| if (clear & TIOCM_DTR) |
| priv->line_control &= ~MCR_DTR; |
| control = priv->line_control; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return spcp8x5_set_ctrl_line(port, control); |
| } |
| |
| static int spcp8x5_tiocmget(struct tty_struct *tty) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
| unsigned long flags; |
| unsigned int mcr; |
| u8 status; |
| unsigned int result; |
| |
| result = spcp8x5_get_msr(port, &status); |
| if (result) |
| return result; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| mcr = priv->line_control; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) |
| | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) |
| | ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0) |
| | ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0) |
| | ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0) |
| | ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0); |
| |
| return result; |
| } |
| |
| static struct usb_serial_driver spcp8x5_device = { |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = "SPCP8x5", |
| }, |
| .id_table = id_table, |
| .num_ports = 1, |
| .open = spcp8x5_open, |
| .dtr_rts = spcp8x5_dtr_rts, |
| .carrier_raised = spcp8x5_carrier_raised, |
| .set_termios = spcp8x5_set_termios, |
| .init_termios = spcp8x5_init_termios, |
| .tiocmget = spcp8x5_tiocmget, |
| .tiocmset = spcp8x5_tiocmset, |
| .probe = spcp8x5_probe, |
| .port_probe = spcp8x5_port_probe, |
| .port_remove = spcp8x5_port_remove, |
| }; |
| |
| static struct usb_serial_driver * const serial_drivers[] = { |
| &spcp8x5_device, NULL |
| }; |
| |
| module_usb_serial_driver(serial_drivers, id_table); |
| |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |