![Johan Hovold](/assets/img/avatar_default.png)
Simplify the endpoint sanity check by letting core verify that the required endpoints are present. Signed-off-by: Johan Hovold <johan@kernel.org>
500 lines
13 KiB
C
500 lines
13 KiB
C
/*
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* spcp8x5 USB to serial adaptor driver
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*
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* Copyright (C) 2010-2013 Johan Hovold (jhovold@gmail.com)
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* Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn)
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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 (greg@kroah.com)
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* Changes for 2.6.20 by Harald Klein <hari@vt100.at>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 int 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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return 0;
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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->termios = tty_std_termios;
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tty->termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
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tty->termios.c_ispeed = 115200;
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tty->termios.c_ospeed = 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);
|
|
|
|
return result;
|
|
}
|
|
|
|
static struct usb_serial_driver spcp8x5_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "SPCP8x5",
|
|
},
|
|
.id_table = id_table,
|
|
.num_ports = 1,
|
|
.num_bulk_in = 1,
|
|
.num_bulk_out = 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");
|