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490 lines
12 KiB
490 lines
12 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* spcp8x5 USB to serial adaptor driver |
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* |
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* Copyright (C) 2010-2013 Johan Hovold ([email protected]) |
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* Copyright (C) 2006 Linxb ([email protected]) |
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* Copyright (C) 2006 S1 Corp. |
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* |
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* Original driver for 2.6.10 pl2303 driver by |
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* Greg Kroah-Hartman ([email protected]) |
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* Changes for 2.6.20 by Harald Klein <[email protected]> |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/errno.h> |
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#include <linux/slab.h> |
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#include <linux/tty.h> |
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#include <linux/tty_driver.h> |
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#include <linux/tty_flip.h> |
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#include <linux/module.h> |
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#include <linux/spinlock.h> |
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#include <linux/usb.h> |
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#include <linux/usb/serial.h> |
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#define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver" |
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#define SPCP825_QUIRK_NO_UART_STATUS 0x01 |
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#define SPCP825_QUIRK_NO_WORK_MODE 0x02 |
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#define SPCP8x5_007_VID 0x04FC |
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#define SPCP8x5_007_PID 0x0201 |
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#define SPCP8x5_008_VID 0x04fc |
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#define SPCP8x5_008_PID 0x0235 |
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#define SPCP8x5_PHILIPS_VID 0x0471 |
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#define SPCP8x5_PHILIPS_PID 0x081e |
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#define SPCP8x5_INTERMATIC_VID 0x04FC |
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#define SPCP8x5_INTERMATIC_PID 0x0204 |
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#define SPCP8x5_835_VID 0x04fc |
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#define SPCP8x5_835_PID 0x0231 |
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static const struct usb_device_id id_table[] = { |
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{ USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)}, |
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{ USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)}, |
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{ USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)}, |
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{ USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)}, |
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{ USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID), |
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.driver_info = SPCP825_QUIRK_NO_UART_STATUS | |
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SPCP825_QUIRK_NO_WORK_MODE }, |
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{ } /* Terminating entry */ |
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}; |
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MODULE_DEVICE_TABLE(usb, id_table); |
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struct spcp8x5_usb_ctrl_arg { |
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u8 type; |
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u8 cmd; |
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u8 cmd_type; |
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u16 value; |
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u16 index; |
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u16 length; |
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}; |
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/* spcp8x5 spec register define */ |
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#define MCR_CONTROL_LINE_RTS 0x02 |
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#define MCR_CONTROL_LINE_DTR 0x01 |
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#define MCR_DTR 0x01 |
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#define MCR_RTS 0x02 |
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#define MSR_STATUS_LINE_DCD 0x80 |
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#define MSR_STATUS_LINE_RI 0x40 |
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#define MSR_STATUS_LINE_DSR 0x20 |
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#define MSR_STATUS_LINE_CTS 0x10 |
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/* verdor command here , we should define myself */ |
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#define SET_DEFAULT 0x40 |
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#define SET_DEFAULT_TYPE 0x20 |
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#define SET_UART_FORMAT 0x40 |
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#define SET_UART_FORMAT_TYPE 0x21 |
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#define SET_UART_FORMAT_SIZE_5 0x00 |
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#define SET_UART_FORMAT_SIZE_6 0x01 |
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#define SET_UART_FORMAT_SIZE_7 0x02 |
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#define SET_UART_FORMAT_SIZE_8 0x03 |
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#define SET_UART_FORMAT_STOP_1 0x00 |
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#define SET_UART_FORMAT_STOP_2 0x04 |
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#define SET_UART_FORMAT_PAR_NONE 0x00 |
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#define SET_UART_FORMAT_PAR_ODD 0x10 |
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#define SET_UART_FORMAT_PAR_EVEN 0x30 |
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#define SET_UART_FORMAT_PAR_MASK 0xD0 |
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#define SET_UART_FORMAT_PAR_SPACE 0x90 |
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#define GET_UART_STATUS_TYPE 0xc0 |
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#define GET_UART_STATUS 0x22 |
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#define GET_UART_STATUS_MSR 0x06 |
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#define SET_UART_STATUS 0x40 |
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#define SET_UART_STATUS_TYPE 0x23 |
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#define SET_UART_STATUS_MCR 0x0004 |
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#define SET_UART_STATUS_MCR_DTR 0x01 |
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#define SET_UART_STATUS_MCR_RTS 0x02 |
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#define SET_UART_STATUS_MCR_LOOP 0x10 |
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#define SET_WORKING_MODE 0x40 |
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#define SET_WORKING_MODE_TYPE 0x24 |
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#define SET_WORKING_MODE_U2C 0x00 |
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#define SET_WORKING_MODE_RS485 0x01 |
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#define SET_WORKING_MODE_PDMA 0x02 |
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#define SET_WORKING_MODE_SPP 0x03 |
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#define SET_FLOWCTL_CHAR 0x40 |
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#define SET_FLOWCTL_CHAR_TYPE 0x25 |
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#define GET_VERSION 0xc0 |
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#define GET_VERSION_TYPE 0x26 |
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#define SET_REGISTER 0x40 |
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#define SET_REGISTER_TYPE 0x27 |
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#define GET_REGISTER 0xc0 |
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#define GET_REGISTER_TYPE 0x28 |
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#define SET_RAM 0x40 |
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#define SET_RAM_TYPE 0x31 |
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#define GET_RAM 0xc0 |
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#define GET_RAM_TYPE 0x32 |
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/* how come ??? */ |
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#define UART_STATE 0x08 |
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#define UART_STATE_TRANSIENT_MASK 0x75 |
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#define UART_DCD 0x01 |
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#define UART_DSR 0x02 |
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#define UART_BREAK_ERROR 0x04 |
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#define UART_RING 0x08 |
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#define UART_FRAME_ERROR 0x10 |
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#define UART_PARITY_ERROR 0x20 |
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#define UART_OVERRUN_ERROR 0x40 |
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#define UART_CTS 0x80 |
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struct spcp8x5_private { |
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unsigned quirks; |
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spinlock_t lock; |
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u8 line_control; |
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}; |
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static int spcp8x5_probe(struct usb_serial *serial, |
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const struct usb_device_id *id) |
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{ |
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usb_set_serial_data(serial, (void *)id); |
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return 0; |
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} |
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static int spcp8x5_port_probe(struct usb_serial_port *port) |
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{ |
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const struct usb_device_id *id = usb_get_serial_data(port->serial); |
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struct spcp8x5_private *priv; |
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priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
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if (!priv) |
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return -ENOMEM; |
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spin_lock_init(&priv->lock); |
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priv->quirks = id->driver_info; |
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usb_set_serial_port_data(port, priv); |
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port->port.drain_delay = 256; |
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return 0; |
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} |
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static void spcp8x5_port_remove(struct usb_serial_port *port) |
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{ |
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struct spcp8x5_private *priv; |
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priv = usb_get_serial_port_data(port); |
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kfree(priv); |
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} |
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static int spcp8x5_set_ctrl_line(struct usb_serial_port *port, u8 mcr) |
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{ |
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struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
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struct usb_device *dev = port->serial->dev; |
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int retval; |
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if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS) |
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return -EPERM; |
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retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
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SET_UART_STATUS_TYPE, SET_UART_STATUS, |
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mcr, 0x04, NULL, 0, 100); |
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if (retval != 0) { |
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dev_err(&port->dev, "failed to set control lines: %d\n", |
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retval); |
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} |
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return retval; |
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} |
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static int spcp8x5_get_msr(struct usb_serial_port *port, u8 *status) |
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{ |
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struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
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struct usb_device *dev = port->serial->dev; |
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u8 *buf; |
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int ret; |
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if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS) |
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return -EPERM; |
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buf = kzalloc(1, GFP_KERNEL); |
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if (!buf) |
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return -ENOMEM; |
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ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), |
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GET_UART_STATUS, GET_UART_STATUS_TYPE, |
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0, GET_UART_STATUS_MSR, buf, 1, 100); |
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if (ret < 1) { |
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dev_err(&port->dev, "failed to get modem status: %d\n", ret); |
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if (ret >= 0) |
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ret = -EIO; |
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goto out; |
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} |
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dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x\n", ret, *buf); |
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*status = *buf; |
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ret = 0; |
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out: |
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kfree(buf); |
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return ret; |
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} |
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static void spcp8x5_set_work_mode(struct usb_serial_port *port, u16 value, |
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u16 index) |
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{ |
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struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
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struct usb_device *dev = port->serial->dev; |
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int ret; |
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if (priv->quirks & SPCP825_QUIRK_NO_WORK_MODE) |
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return; |
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ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
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SET_WORKING_MODE_TYPE, SET_WORKING_MODE, |
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value, index, NULL, 0, 100); |
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dev_dbg(&port->dev, "value = %#x , index = %#x\n", value, index); |
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if (ret < 0) |
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dev_err(&port->dev, "failed to set work mode: %d\n", ret); |
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} |
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static int spcp8x5_carrier_raised(struct usb_serial_port *port) |
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{ |
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u8 msr; |
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int ret; |
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ret = spcp8x5_get_msr(port, &msr); |
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if (ret || msr & MSR_STATUS_LINE_DCD) |
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return 1; |
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return 0; |
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} |
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static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on) |
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{ |
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struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
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unsigned long flags; |
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u8 control; |
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spin_lock_irqsave(&priv->lock, flags); |
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if (on) |
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priv->line_control = MCR_CONTROL_LINE_DTR |
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| MCR_CONTROL_LINE_RTS; |
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else |
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priv->line_control &= ~ (MCR_CONTROL_LINE_DTR |
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| MCR_CONTROL_LINE_RTS); |
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control = priv->line_control; |
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spin_unlock_irqrestore(&priv->lock, flags); |
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spcp8x5_set_ctrl_line(port, control); |
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} |
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static void spcp8x5_init_termios(struct tty_struct *tty) |
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{ |
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tty_encode_baud_rate(tty, 115200, 115200); |
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} |
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static void spcp8x5_set_termios(struct tty_struct *tty, |
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struct usb_serial_port *port, struct ktermios *old_termios) |
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{ |
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struct usb_serial *serial = port->serial; |
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struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
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unsigned long flags; |
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unsigned int cflag = tty->termios.c_cflag; |
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unsigned short uartdata; |
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unsigned char buf[2] = {0, 0}; |
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int baud; |
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int i; |
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u8 control; |
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/* check that they really want us to change something */ |
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if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) |
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return; |
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/* set DTR/RTS active */ |
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spin_lock_irqsave(&priv->lock, flags); |
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control = priv->line_control; |
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if (old_termios && (old_termios->c_cflag & CBAUD) == B0) { |
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priv->line_control |= MCR_DTR; |
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if (!(old_termios->c_cflag & CRTSCTS)) |
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priv->line_control |= MCR_RTS; |
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} |
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if (control != priv->line_control) { |
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control = priv->line_control; |
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spin_unlock_irqrestore(&priv->lock, flags); |
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spcp8x5_set_ctrl_line(port, control); |
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} else { |
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spin_unlock_irqrestore(&priv->lock, flags); |
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} |
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/* Set Baud Rate */ |
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baud = tty_get_baud_rate(tty); |
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switch (baud) { |
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case 300: buf[0] = 0x00; break; |
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case 600: buf[0] = 0x01; break; |
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case 1200: buf[0] = 0x02; break; |
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case 2400: buf[0] = 0x03; break; |
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case 4800: buf[0] = 0x04; break; |
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case 9600: buf[0] = 0x05; break; |
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case 19200: buf[0] = 0x07; break; |
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case 38400: buf[0] = 0x09; break; |
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case 57600: buf[0] = 0x0a; break; |
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case 115200: buf[0] = 0x0b; break; |
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case 230400: buf[0] = 0x0c; break; |
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case 460800: buf[0] = 0x0d; break; |
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case 921600: buf[0] = 0x0e; break; |
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/* case 1200000: buf[0] = 0x0f; break; */ |
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/* case 2400000: buf[0] = 0x10; break; */ |
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case 3000000: buf[0] = 0x11; break; |
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/* case 6000000: buf[0] = 0x12; break; */ |
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case 0: |
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case 1000000: |
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buf[0] = 0x0b; break; |
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default: |
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dev_err(&port->dev, "unsupported baudrate, using 9600\n"); |
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} |
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/* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */ |
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switch (cflag & CSIZE) { |
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case CS5: |
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buf[1] |= SET_UART_FORMAT_SIZE_5; |
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break; |
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case CS6: |
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buf[1] |= SET_UART_FORMAT_SIZE_6; |
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break; |
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case CS7: |
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buf[1] |= SET_UART_FORMAT_SIZE_7; |
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break; |
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default: |
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case CS8: |
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buf[1] |= SET_UART_FORMAT_SIZE_8; |
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break; |
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} |
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/* Set Stop bit2 : 0:1bit 1:2bit */ |
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buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 : |
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SET_UART_FORMAT_STOP_1; |
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/* Set Parity bit3-4 01:Odd 11:Even */ |
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if (cflag & PARENB) { |
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buf[1] |= (cflag & PARODD) ? |
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SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ; |
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} else { |
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buf[1] |= SET_UART_FORMAT_PAR_NONE; |
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} |
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uartdata = buf[0] | buf[1]<<8; |
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i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
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SET_UART_FORMAT_TYPE, SET_UART_FORMAT, |
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uartdata, 0, NULL, 0, 100); |
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if (i < 0) |
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dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n", |
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uartdata, i); |
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dev_dbg(&port->dev, "0x21:0x40:0:0 %d\n", i); |
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if (cflag & CRTSCTS) { |
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/* enable hardware flow control */ |
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spcp8x5_set_work_mode(port, 0x000a, SET_WORKING_MODE_U2C); |
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} |
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} |
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static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) |
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{ |
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struct usb_serial *serial = port->serial; |
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struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
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int ret; |
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usb_clear_halt(serial->dev, port->write_urb->pipe); |
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usb_clear_halt(serial->dev, port->read_urb->pipe); |
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ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
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0x09, 0x00, |
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0x01, 0x00, NULL, 0x00, 100); |
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if (ret) |
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return ret; |
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spcp8x5_set_ctrl_line(port, priv->line_control); |
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if (tty) |
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spcp8x5_set_termios(tty, port, NULL); |
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return usb_serial_generic_open(tty, port); |
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} |
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static int spcp8x5_tiocmset(struct tty_struct *tty, |
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unsigned int set, unsigned int clear) |
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{ |
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struct usb_serial_port *port = tty->driver_data; |
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struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
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unsigned long flags; |
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u8 control; |
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spin_lock_irqsave(&priv->lock, flags); |
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if (set & TIOCM_RTS) |
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priv->line_control |= MCR_RTS; |
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if (set & TIOCM_DTR) |
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priv->line_control |= MCR_DTR; |
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if (clear & TIOCM_RTS) |
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priv->line_control &= ~MCR_RTS; |
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if (clear & TIOCM_DTR) |
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priv->line_control &= ~MCR_DTR; |
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control = priv->line_control; |
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spin_unlock_irqrestore(&priv->lock, flags); |
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return spcp8x5_set_ctrl_line(port, control); |
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} |
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static int spcp8x5_tiocmget(struct tty_struct *tty) |
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{ |
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struct usb_serial_port *port = tty->driver_data; |
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struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
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unsigned long flags; |
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unsigned int mcr; |
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u8 status; |
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unsigned int result; |
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result = spcp8x5_get_msr(port, &status); |
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if (result) |
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return result; |
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spin_lock_irqsave(&priv->lock, flags); |
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mcr = priv->line_control; |
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spin_unlock_irqrestore(&priv->lock, flags); |
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result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) |
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| ((mcr & MCR_RTS) ? TIOCM_RTS : 0) |
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| ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0) |
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| ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0) |
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| ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0) |
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| ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0); |
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return result; |
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} |
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static struct usb_serial_driver spcp8x5_device = { |
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.driver = { |
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.owner = THIS_MODULE, |
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.name = "SPCP8x5", |
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}, |
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.id_table = id_table, |
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.num_ports = 1, |
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.num_bulk_in = 1, |
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.num_bulk_out = 1, |
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.open = spcp8x5_open, |
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.dtr_rts = spcp8x5_dtr_rts, |
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.carrier_raised = spcp8x5_carrier_raised, |
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.set_termios = spcp8x5_set_termios, |
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.init_termios = spcp8x5_init_termios, |
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.tiocmget = spcp8x5_tiocmget, |
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.tiocmset = spcp8x5_tiocmset, |
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.probe = spcp8x5_probe, |
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.port_probe = spcp8x5_port_probe, |
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.port_remove = spcp8x5_port_remove, |
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}; |
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static struct usb_serial_driver * const serial_drivers[] = { |
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&spcp8x5_device, NULL |
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}; |
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module_usb_serial_driver(serial_drivers, id_table); |
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MODULE_DESCRIPTION(DRIVER_DESC); |
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MODULE_LICENSE("GPL");
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