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|
// 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 <hari@vt100.at>
*/
#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 < 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->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
|