// SPDX-License-Identifier: GPL-2.0+ /* * 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 */ #include #include #include #include #include #include #include #include #include #include #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 < 1) { dev_err(&port->dev, "failed to get modem status: %d\n", ret); if (ret >= 0) ret = -EIO; goto out; } dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x\n", ret, *buf); *status = *buf; ret = 0; out: 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_encode_baud_rate(tty, 115200, 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;