mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
![Johan Hovold](/assets/img/avatar_default.png)
Use tty_insert_flip_string_fixed_flag to report errors to line discipline. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
860 lines
24 KiB
C
860 lines
24 KiB
C
/*
|
|
* Prolific PL2303 USB to serial adaptor driver
|
|
*
|
|
* Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com)
|
|
* Copyright (C) 2003 IBM Corp.
|
|
*
|
|
* Original driver for 2.2.x by anonymous
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License version
|
|
* 2 as published by the Free Software Foundation.
|
|
*
|
|
* See Documentation/usb/usb-serial.txt for more information on using this
|
|
* driver
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/tty_driver.h>
|
|
#include <linux/tty_flip.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/serial.h>
|
|
#include "pl2303.h"
|
|
|
|
/*
|
|
* Version Information
|
|
*/
|
|
#define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver"
|
|
|
|
static int debug;
|
|
|
|
#define PL2303_CLOSING_WAIT (30*HZ)
|
|
|
|
static const struct usb_device_id id_table[] = {
|
|
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) },
|
|
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) },
|
|
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) },
|
|
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) },
|
|
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) },
|
|
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) },
|
|
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) },
|
|
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) },
|
|
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) },
|
|
{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
|
|
{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
|
|
{ USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) },
|
|
{ USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) },
|
|
{ USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) },
|
|
{ USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) },
|
|
{ USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) },
|
|
{ USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) },
|
|
{ USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) },
|
|
{ USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) },
|
|
{ USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) },
|
|
{ USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) },
|
|
{ USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) },
|
|
{ USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) },
|
|
{ USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) },
|
|
{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) },
|
|
{ USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) },
|
|
{ USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) },
|
|
{ USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) },
|
|
{ USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) },
|
|
{ USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */
|
|
{ USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) },
|
|
{ USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) },
|
|
{ USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) },
|
|
{ USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) },
|
|
{ USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) },
|
|
{ USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) },
|
|
{ USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) },
|
|
{ USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) },
|
|
{ USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) },
|
|
{ USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) },
|
|
{ USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) },
|
|
{ USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) },
|
|
{ USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) },
|
|
{ USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) },
|
|
{ USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) },
|
|
{ USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) },
|
|
{ USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) },
|
|
{ USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) },
|
|
{ } /* Terminating entry */
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(usb, id_table);
|
|
|
|
static struct usb_driver pl2303_driver = {
|
|
.name = "pl2303",
|
|
.probe = usb_serial_probe,
|
|
.disconnect = usb_serial_disconnect,
|
|
.id_table = id_table,
|
|
.suspend = usb_serial_suspend,
|
|
.resume = usb_serial_resume,
|
|
.no_dynamic_id = 1,
|
|
.supports_autosuspend = 1,
|
|
};
|
|
|
|
#define SET_LINE_REQUEST_TYPE 0x21
|
|
#define SET_LINE_REQUEST 0x20
|
|
|
|
#define SET_CONTROL_REQUEST_TYPE 0x21
|
|
#define SET_CONTROL_REQUEST 0x22
|
|
#define CONTROL_DTR 0x01
|
|
#define CONTROL_RTS 0x02
|
|
|
|
#define BREAK_REQUEST_TYPE 0x21
|
|
#define BREAK_REQUEST 0x23
|
|
#define BREAK_ON 0xffff
|
|
#define BREAK_OFF 0x0000
|
|
|
|
#define GET_LINE_REQUEST_TYPE 0xa1
|
|
#define GET_LINE_REQUEST 0x21
|
|
|
|
#define VENDOR_WRITE_REQUEST_TYPE 0x40
|
|
#define VENDOR_WRITE_REQUEST 0x01
|
|
|
|
#define VENDOR_READ_REQUEST_TYPE 0xc0
|
|
#define VENDOR_READ_REQUEST 0x01
|
|
|
|
#define UART_STATE 0x08
|
|
#define UART_STATE_TRANSIENT_MASK 0x74
|
|
#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
|
|
|
|
|
|
enum pl2303_type {
|
|
type_0, /* don't know the difference between type 0 and */
|
|
type_1, /* type 1, until someone from prolific tells us... */
|
|
HX, /* HX version of the pl2303 chip */
|
|
};
|
|
|
|
struct pl2303_private {
|
|
spinlock_t lock;
|
|
wait_queue_head_t delta_msr_wait;
|
|
u8 line_control;
|
|
u8 line_status;
|
|
enum pl2303_type type;
|
|
};
|
|
|
|
static int pl2303_vendor_read(__u16 value, __u16 index,
|
|
struct usb_serial *serial, unsigned char *buf)
|
|
{
|
|
int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
|
|
VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE,
|
|
value, index, buf, 1, 100);
|
|
dbg("0x%x:0x%x:0x%x:0x%x %d - %x", VENDOR_READ_REQUEST_TYPE,
|
|
VENDOR_READ_REQUEST, value, index, res, buf[0]);
|
|
return res;
|
|
}
|
|
|
|
static int pl2303_vendor_write(__u16 value, __u16 index,
|
|
struct usb_serial *serial)
|
|
{
|
|
int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE,
|
|
value, index, NULL, 0, 100);
|
|
dbg("0x%x:0x%x:0x%x:0x%x %d", VENDOR_WRITE_REQUEST_TYPE,
|
|
VENDOR_WRITE_REQUEST, value, index, res);
|
|
return res;
|
|
}
|
|
|
|
static int pl2303_startup(struct usb_serial *serial)
|
|
{
|
|
struct pl2303_private *priv;
|
|
enum pl2303_type type = type_0;
|
|
unsigned char *buf;
|
|
int i;
|
|
|
|
buf = kmalloc(10, GFP_KERNEL);
|
|
if (buf == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (serial->dev->descriptor.bDeviceClass == 0x02)
|
|
type = type_0;
|
|
else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40)
|
|
type = HX;
|
|
else if (serial->dev->descriptor.bDeviceClass == 0x00)
|
|
type = type_1;
|
|
else if (serial->dev->descriptor.bDeviceClass == 0xFF)
|
|
type = type_1;
|
|
dbg("device type: %d", type);
|
|
|
|
for (i = 0; i < serial->num_ports; ++i) {
|
|
priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL);
|
|
if (!priv)
|
|
goto cleanup;
|
|
spin_lock_init(&priv->lock);
|
|
init_waitqueue_head(&priv->delta_msr_wait);
|
|
priv->type = type;
|
|
usb_set_serial_port_data(serial->port[i], priv);
|
|
}
|
|
|
|
pl2303_vendor_read(0x8484, 0, serial, buf);
|
|
pl2303_vendor_write(0x0404, 0, serial);
|
|
pl2303_vendor_read(0x8484, 0, serial, buf);
|
|
pl2303_vendor_read(0x8383, 0, serial, buf);
|
|
pl2303_vendor_read(0x8484, 0, serial, buf);
|
|
pl2303_vendor_write(0x0404, 1, serial);
|
|
pl2303_vendor_read(0x8484, 0, serial, buf);
|
|
pl2303_vendor_read(0x8383, 0, serial, buf);
|
|
pl2303_vendor_write(0, 1, serial);
|
|
pl2303_vendor_write(1, 0, serial);
|
|
if (type == HX)
|
|
pl2303_vendor_write(2, 0x44, serial);
|
|
else
|
|
pl2303_vendor_write(2, 0x24, serial);
|
|
|
|
kfree(buf);
|
|
return 0;
|
|
|
|
cleanup:
|
|
kfree(buf);
|
|
for (--i; i >= 0; --i) {
|
|
priv = usb_get_serial_port_data(serial->port[i]);
|
|
kfree(priv);
|
|
usb_set_serial_port_data(serial->port[i], NULL);
|
|
}
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static int set_control_lines(struct usb_device *dev, u8 value)
|
|
{
|
|
int retval;
|
|
|
|
retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
|
|
SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE,
|
|
value, 0, NULL, 0, 100);
|
|
dbg("%s - value = %d, retval = %d", __func__, value, retval);
|
|
return retval;
|
|
}
|
|
|
|
static void pl2303_set_termios(struct tty_struct *tty,
|
|
struct usb_serial_port *port, struct ktermios *old_termios)
|
|
{
|
|
struct usb_serial *serial = port->serial;
|
|
struct pl2303_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long flags;
|
|
unsigned int cflag;
|
|
unsigned char *buf;
|
|
int baud;
|
|
int i;
|
|
u8 control;
|
|
const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600,
|
|
4800, 7200, 9600, 14400, 19200, 28800, 38400,
|
|
57600, 115200, 230400, 460800, 614400,
|
|
921600, 1228800, 2457600, 3000000, 6000000 };
|
|
int baud_floor, baud_ceil;
|
|
int k;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
/* The PL2303 is reported to lose bytes if you change
|
|
serial settings even to the same values as before. Thus
|
|
we actually need to filter in this specific case */
|
|
|
|
if (!tty_termios_hw_change(tty->termios, old_termios))
|
|
return;
|
|
|
|
cflag = tty->termios->c_cflag;
|
|
|
|
buf = kzalloc(7, GFP_KERNEL);
|
|
if (!buf) {
|
|
dev_err(&port->dev, "%s - out of memory.\n", __func__);
|
|
/* Report back no change occurred */
|
|
*tty->termios = *old_termios;
|
|
return;
|
|
}
|
|
|
|
i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
|
|
GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
|
|
0, 0, buf, 7, 100);
|
|
dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i,
|
|
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
|
|
|
|
if (cflag & CSIZE) {
|
|
switch (cflag & CSIZE) {
|
|
case CS5:
|
|
buf[6] = 5;
|
|
break;
|
|
case CS6:
|
|
buf[6] = 6;
|
|
break;
|
|
case CS7:
|
|
buf[6] = 7;
|
|
break;
|
|
default:
|
|
case CS8:
|
|
buf[6] = 8;
|
|
break;
|
|
}
|
|
dbg("%s - data bits = %d", __func__, buf[6]);
|
|
}
|
|
|
|
/* For reference buf[0]:buf[3] baud rate value */
|
|
/* NOTE: Only the values defined in baud_sup are supported !
|
|
* => if unsupported values are set, the PL2303 seems to use
|
|
* 9600 baud (at least my PL2303X always does)
|
|
*/
|
|
baud = tty_get_baud_rate(tty);
|
|
dbg("%s - baud requested = %d", __func__, baud);
|
|
if (baud) {
|
|
/* Set baudrate to nearest supported value */
|
|
for (k=0; k<ARRAY_SIZE(baud_sup); k++) {
|
|
if (baud_sup[k] / baud) {
|
|
baud_ceil = baud_sup[k];
|
|
if (k==0) {
|
|
baud = baud_ceil;
|
|
} else {
|
|
baud_floor = baud_sup[k-1];
|
|
if ((baud_ceil % baud)
|
|
> (baud % baud_floor))
|
|
baud = baud_floor;
|
|
else
|
|
baud = baud_ceil;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (baud > 1228800) {
|
|
/* type_0, type_1 only support up to 1228800 baud */
|
|
if (priv->type != HX)
|
|
baud = 1228800;
|
|
else if (baud > 6000000)
|
|
baud = 6000000;
|
|
}
|
|
dbg("%s - baud set = %d", __func__, baud);
|
|
buf[0] = baud & 0xff;
|
|
buf[1] = (baud >> 8) & 0xff;
|
|
buf[2] = (baud >> 16) & 0xff;
|
|
buf[3] = (baud >> 24) & 0xff;
|
|
}
|
|
|
|
/* For reference buf[4]=0 is 1 stop bits */
|
|
/* For reference buf[4]=1 is 1.5 stop bits */
|
|
/* For reference buf[4]=2 is 2 stop bits */
|
|
if (cflag & CSTOPB) {
|
|
/* NOTE: Comply with "real" UARTs / RS232:
|
|
* use 1.5 instead of 2 stop bits with 5 data bits
|
|
*/
|
|
if ((cflag & CSIZE) == CS5) {
|
|
buf[4] = 1;
|
|
dbg("%s - stop bits = 1.5", __func__);
|
|
} else {
|
|
buf[4] = 2;
|
|
dbg("%s - stop bits = 2", __func__);
|
|
}
|
|
} else {
|
|
buf[4] = 0;
|
|
dbg("%s - stop bits = 1", __func__);
|
|
}
|
|
|
|
if (cflag & PARENB) {
|
|
/* For reference buf[5]=0 is none parity */
|
|
/* For reference buf[5]=1 is odd parity */
|
|
/* For reference buf[5]=2 is even parity */
|
|
/* For reference buf[5]=3 is mark parity */
|
|
/* For reference buf[5]=4 is space parity */
|
|
if (cflag & PARODD) {
|
|
if (cflag & CMSPAR) {
|
|
buf[5] = 3;
|
|
dbg("%s - parity = mark", __func__);
|
|
} else {
|
|
buf[5] = 1;
|
|
dbg("%s - parity = odd", __func__);
|
|
}
|
|
} else {
|
|
if (cflag & CMSPAR) {
|
|
buf[5] = 4;
|
|
dbg("%s - parity = space", __func__);
|
|
} else {
|
|
buf[5] = 2;
|
|
dbg("%s - parity = even", __func__);
|
|
}
|
|
}
|
|
} else {
|
|
buf[5] = 0;
|
|
dbg("%s - parity = none", __func__);
|
|
}
|
|
|
|
i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE,
|
|
0, 0, buf, 7, 100);
|
|
dbg("0x21:0x20:0:0 %d", i);
|
|
|
|
/* change control lines if we are switching to or from B0 */
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
control = priv->line_control;
|
|
if ((cflag & CBAUD) == B0)
|
|
priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
|
|
else
|
|
priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
|
|
if (control != priv->line_control) {
|
|
control = priv->line_control;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
set_control_lines(serial->dev, control);
|
|
} else {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
}
|
|
|
|
buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0;
|
|
|
|
i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
|
|
GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
|
|
0, 0, buf, 7, 100);
|
|
dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i,
|
|
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
|
|
|
|
if (cflag & CRTSCTS) {
|
|
if (priv->type == HX)
|
|
pl2303_vendor_write(0x0, 0x61, serial);
|
|
else
|
|
pl2303_vendor_write(0x0, 0x41, serial);
|
|
} else {
|
|
pl2303_vendor_write(0x0, 0x0, serial);
|
|
}
|
|
|
|
/* Save resulting baud rate */
|
|
if (baud)
|
|
tty_encode_baud_rate(tty, baud, baud);
|
|
|
|
kfree(buf);
|
|
}
|
|
|
|
static void pl2303_dtr_rts(struct usb_serial_port *port, int on)
|
|
{
|
|
struct pl2303_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long flags;
|
|
u8 control;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
/* Change DTR and RTS */
|
|
if (on)
|
|
priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
|
|
else
|
|
priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
|
|
control = priv->line_control;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
set_control_lines(port->serial->dev, control);
|
|
}
|
|
|
|
static void pl2303_close(struct usb_serial_port *port)
|
|
{
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
usb_serial_generic_close(port);
|
|
usb_kill_urb(port->interrupt_in_urb);
|
|
}
|
|
|
|
static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port)
|
|
{
|
|
struct ktermios tmp_termios;
|
|
struct usb_serial *serial = port->serial;
|
|
struct pl2303_private *priv = usb_get_serial_port_data(port);
|
|
int result;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
if (priv->type != HX) {
|
|
usb_clear_halt(serial->dev, port->write_urb->pipe);
|
|
usb_clear_halt(serial->dev, port->read_urb->pipe);
|
|
} else {
|
|
/* reset upstream data pipes */
|
|
pl2303_vendor_write(8, 0, serial);
|
|
pl2303_vendor_write(9, 0, serial);
|
|
}
|
|
|
|
/* Setup termios */
|
|
if (tty)
|
|
pl2303_set_termios(tty, port, &tmp_termios);
|
|
|
|
dbg("%s - submitting read urb", __func__);
|
|
result = usb_serial_generic_submit_read_urb(port, GFP_KERNEL);
|
|
if (result) {
|
|
pl2303_close(port);
|
|
return -EPROTO;
|
|
}
|
|
|
|
dbg("%s - submitting interrupt urb", __func__);
|
|
result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
|
|
if (result) {
|
|
dev_err(&port->dev, "%s - failed submitting interrupt urb,"
|
|
" error %d\n", __func__, result);
|
|
pl2303_close(port);
|
|
return -EPROTO;
|
|
}
|
|
port->port.drain_delay = 256;
|
|
return 0;
|
|
}
|
|
|
|
static int pl2303_tiocmset(struct tty_struct *tty, struct file *file,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct pl2303_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long flags;
|
|
u8 control;
|
|
|
|
if (!usb_get_intfdata(port->serial->interface))
|
|
return -ENODEV;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (set & TIOCM_RTS)
|
|
priv->line_control |= CONTROL_RTS;
|
|
if (set & TIOCM_DTR)
|
|
priv->line_control |= CONTROL_DTR;
|
|
if (clear & TIOCM_RTS)
|
|
priv->line_control &= ~CONTROL_RTS;
|
|
if (clear & TIOCM_DTR)
|
|
priv->line_control &= ~CONTROL_DTR;
|
|
control = priv->line_control;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return set_control_lines(port->serial->dev, control);
|
|
}
|
|
|
|
static int pl2303_tiocmget(struct tty_struct *tty, struct file *file)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct pl2303_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long flags;
|
|
unsigned int mcr;
|
|
unsigned int status;
|
|
unsigned int result;
|
|
|
|
dbg("%s (%d)", __func__, port->number);
|
|
|
|
if (!usb_get_intfdata(port->serial->interface))
|
|
return -ENODEV;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
mcr = priv->line_control;
|
|
status = priv->line_status;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
|
|
| ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
|
|
| ((status & UART_CTS) ? TIOCM_CTS : 0)
|
|
| ((status & UART_DSR) ? TIOCM_DSR : 0)
|
|
| ((status & UART_RING) ? TIOCM_RI : 0)
|
|
| ((status & UART_DCD) ? TIOCM_CD : 0);
|
|
|
|
dbg("%s - result = %x", __func__, result);
|
|
|
|
return result;
|
|
}
|
|
|
|
static int pl2303_carrier_raised(struct usb_serial_port *port)
|
|
{
|
|
struct pl2303_private *priv = usb_get_serial_port_data(port);
|
|
if (priv->line_status & UART_DCD)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
|
|
{
|
|
struct pl2303_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long flags;
|
|
unsigned int prevstatus;
|
|
unsigned int status;
|
|
unsigned int changed;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
prevstatus = priv->line_status;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
while (1) {
|
|
interruptible_sleep_on(&priv->delta_msr_wait);
|
|
/* see if a signal did it */
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
status = priv->line_status;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
changed = prevstatus ^ status;
|
|
|
|
if (((arg & TIOCM_RNG) && (changed & UART_RING)) ||
|
|
((arg & TIOCM_DSR) && (changed & UART_DSR)) ||
|
|
((arg & TIOCM_CD) && (changed & UART_DCD)) ||
|
|
((arg & TIOCM_CTS) && (changed & UART_CTS))) {
|
|
return 0;
|
|
}
|
|
prevstatus = status;
|
|
}
|
|
/* NOTREACHED */
|
|
return 0;
|
|
}
|
|
|
|
static int pl2303_ioctl(struct tty_struct *tty, struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct serial_struct ser;
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd);
|
|
|
|
switch (cmd) {
|
|
case TIOCGSERIAL:
|
|
memset(&ser, 0, sizeof ser);
|
|
ser.type = PORT_16654;
|
|
ser.line = port->serial->minor;
|
|
ser.port = port->number;
|
|
ser.baud_base = 460800;
|
|
|
|
if (copy_to_user((void __user *)arg, &ser, sizeof ser))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
|
|
case TIOCMIWAIT:
|
|
dbg("%s (%d) TIOCMIWAIT", __func__, port->number);
|
|
return wait_modem_info(port, arg);
|
|
default:
|
|
dbg("%s not supported = 0x%04x", __func__, cmd);
|
|
break;
|
|
}
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
|
|
static void pl2303_break_ctl(struct tty_struct *tty, int break_state)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct usb_serial *serial = port->serial;
|
|
u16 state;
|
|
int result;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
if (break_state == 0)
|
|
state = BREAK_OFF;
|
|
else
|
|
state = BREAK_ON;
|
|
dbg("%s - turning break %s", __func__,
|
|
state == BREAK_OFF ? "off" : "on");
|
|
|
|
result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
BREAK_REQUEST, BREAK_REQUEST_TYPE, state,
|
|
0, NULL, 0, 100);
|
|
if (result)
|
|
dbg("%s - error sending break = %d", __func__, result);
|
|
}
|
|
|
|
static void pl2303_release(struct usb_serial *serial)
|
|
{
|
|
int i;
|
|
struct pl2303_private *priv;
|
|
|
|
dbg("%s", __func__);
|
|
|
|
for (i = 0; i < serial->num_ports; ++i) {
|
|
priv = usb_get_serial_port_data(serial->port[i]);
|
|
kfree(priv);
|
|
}
|
|
}
|
|
|
|
static void pl2303_update_line_status(struct usb_serial_port *port,
|
|
unsigned char *data,
|
|
unsigned int actual_length)
|
|
{
|
|
|
|
struct pl2303_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long flags;
|
|
u8 status_idx = UART_STATE;
|
|
u8 length = UART_STATE + 1;
|
|
u16 idv, idp;
|
|
|
|
idv = le16_to_cpu(port->serial->dev->descriptor.idVendor);
|
|
idp = le16_to_cpu(port->serial->dev->descriptor.idProduct);
|
|
|
|
|
|
if (idv == SIEMENS_VENDOR_ID) {
|
|
if (idp == SIEMENS_PRODUCT_ID_X65 ||
|
|
idp == SIEMENS_PRODUCT_ID_SX1 ||
|
|
idp == SIEMENS_PRODUCT_ID_X75) {
|
|
|
|
length = 1;
|
|
status_idx = 0;
|
|
}
|
|
}
|
|
|
|
if (actual_length < length)
|
|
return;
|
|
|
|
/* Save off the uart status for others to look at */
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->line_status = data[status_idx];
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
if (priv->line_status & UART_BREAK_ERROR)
|
|
usb_serial_handle_break(port);
|
|
wake_up_interruptible(&priv->delta_msr_wait);
|
|
}
|
|
|
|
static void pl2303_read_int_callback(struct urb *urb)
|
|
{
|
|
struct usb_serial_port *port = urb->context;
|
|
unsigned char *data = urb->transfer_buffer;
|
|
unsigned int actual_length = urb->actual_length;
|
|
int status = urb->status;
|
|
int retval;
|
|
|
|
dbg("%s (%d)", __func__, port->number);
|
|
|
|
switch (status) {
|
|
case 0:
|
|
/* success */
|
|
break;
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
/* this urb is terminated, clean up */
|
|
dbg("%s - urb shutting down with status: %d", __func__,
|
|
status);
|
|
return;
|
|
default:
|
|
dbg("%s - nonzero urb status received: %d", __func__,
|
|
status);
|
|
goto exit;
|
|
}
|
|
|
|
usb_serial_debug_data(debug, &port->dev, __func__,
|
|
urb->actual_length, urb->transfer_buffer);
|
|
|
|
pl2303_update_line_status(port, data, actual_length);
|
|
|
|
exit:
|
|
retval = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (retval)
|
|
dev_err(&urb->dev->dev,
|
|
"%s - usb_submit_urb failed with result %d\n",
|
|
__func__, retval);
|
|
}
|
|
|
|
static void pl2303_process_read_urb(struct urb *urb)
|
|
{
|
|
struct usb_serial_port *port = urb->context;
|
|
struct pl2303_private *priv = usb_get_serial_port_data(port);
|
|
struct tty_struct *tty;
|
|
unsigned char *data = urb->transfer_buffer;
|
|
char tty_flag = TTY_NORMAL;
|
|
unsigned long flags;
|
|
u8 line_status;
|
|
int i;
|
|
|
|
/* update line status */
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
line_status = priv->line_status;
|
|
priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
wake_up_interruptible(&priv->delta_msr_wait);
|
|
|
|
if (!urb->actual_length)
|
|
return;
|
|
|
|
tty = tty_port_tty_get(&port->port);
|
|
if (!tty)
|
|
return;
|
|
|
|
/* break takes precedence over parity, */
|
|
/* which takes precedence over framing errors */
|
|
if (line_status & UART_BREAK_ERROR)
|
|
tty_flag = TTY_BREAK;
|
|
else if (line_status & UART_PARITY_ERROR)
|
|
tty_flag = TTY_PARITY;
|
|
else if (line_status & UART_FRAME_ERROR)
|
|
tty_flag = TTY_FRAME;
|
|
dbg("%s - tty_flag = %d", __func__, tty_flag);
|
|
|
|
/* overrun is special, not associated with a char */
|
|
if (line_status & UART_OVERRUN_ERROR)
|
|
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
|
|
|
|
if (port->port.console && port->sysrq) {
|
|
for (i = 0; i < urb->actual_length; ++i)
|
|
if (!usb_serial_handle_sysrq_char(tty, port, data[i]))
|
|
tty_insert_flip_char(tty, data[i], tty_flag);
|
|
} else {
|
|
tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
|
|
urb->actual_length);
|
|
}
|
|
|
|
tty_flip_buffer_push(tty);
|
|
tty_kref_put(tty);
|
|
}
|
|
|
|
/* All of the device info needed for the PL2303 SIO serial converter */
|
|
static struct usb_serial_driver pl2303_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "pl2303",
|
|
},
|
|
.id_table = id_table,
|
|
.usb_driver = &pl2303_driver,
|
|
.num_ports = 1,
|
|
.bulk_in_size = 256,
|
|
.bulk_out_size = 256,
|
|
.open = pl2303_open,
|
|
.close = pl2303_close,
|
|
.dtr_rts = pl2303_dtr_rts,
|
|
.carrier_raised = pl2303_carrier_raised,
|
|
.ioctl = pl2303_ioctl,
|
|
.break_ctl = pl2303_break_ctl,
|
|
.set_termios = pl2303_set_termios,
|
|
.tiocmget = pl2303_tiocmget,
|
|
.tiocmset = pl2303_tiocmset,
|
|
.process_read_urb = pl2303_process_read_urb,
|
|
.read_int_callback = pl2303_read_int_callback,
|
|
.attach = pl2303_startup,
|
|
.release = pl2303_release,
|
|
};
|
|
|
|
static int __init pl2303_init(void)
|
|
{
|
|
int retval;
|
|
|
|
retval = usb_serial_register(&pl2303_device);
|
|
if (retval)
|
|
goto failed_usb_serial_register;
|
|
retval = usb_register(&pl2303_driver);
|
|
if (retval)
|
|
goto failed_usb_register;
|
|
printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
|
|
return 0;
|
|
failed_usb_register:
|
|
usb_serial_deregister(&pl2303_device);
|
|
failed_usb_serial_register:
|
|
return retval;
|
|
}
|
|
|
|
static void __exit pl2303_exit(void)
|
|
{
|
|
usb_deregister(&pl2303_driver);
|
|
usb_serial_deregister(&pl2303_device);
|
|
}
|
|
|
|
module_init(pl2303_init);
|
|
module_exit(pl2303_exit);
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Debug enabled or not");
|
|
|