Am 01.04.2013 21:12, schrieb Greg KH:
On Mon, Apr 01, 2013 at 11:42:30AM +0200, Karsten Malcher wrote:
Am 01.04.2013 01:10, schrieb Greg KH:
On Sun, Mar 31, 2013 at 07:15:22PM +0200, Karsten Malcher wrote:
Am 31.03.2013 18:58, schrieb Greg KH:
On Sun, Mar 31, 2013 at 06:33:24PM +0200, Karsten Malcher wrote:
Am 31.03.2013 17:50, schrieb Greg KH:
On Sun, Mar 31, 2013 at 05:20:06PM +0200, Karsten Malcher wrote:
Hello,
I have a problem with the PL2303HX chip.
Please refer to this bug:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=704242
Where can i address such a bug?
How can i debug and help to solve the problem?
Please provide the output of the kernel log when using this device on
the 3.8 kernel release.
thanks,
greg k-h
It seems that the driver is the same i am using in kernel 3.2.0-3.
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/drivers/usb/serial/pl2303.c?id=v3.8.5
So please don't be angry, but it's much effort of installing and compiling for the same result.
The main problem is that there is no special output in the kernel messages with this PL-2303 HX chip.
Exactly no message or error appears, the driver simply gives no data that arrives.
Can you provide the output of 'lsusb -v' with the device plugged in?
thanks,
greg k-h
Of course.
First the overview over all devices:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 008: ID 058f:6254 Alcor Micro Corp. USB Hub
Bus 003 Device 002: ID 04d9:1503 Holtek Semiconductor, Inc. Shortboard Lefty
Bus 001 Device 009: ID 16c0:05dc VOTI shared ID for use with libusb
Bus 001 Device 017: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 001 Device 011: ID 058f:6366 Alcor Micro Corp. Multi Flash Reader
The output of lsusb -v for the device:
(Complete output attached as file)
Bus 001 Device 017: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
Ok, this should be detected as a HX device by the driver.
Can you do, as root, unplug the device and type:
rmmod pl2303
dmesg -c
modprobe pl2303 debug=1
plug the device in, and then send the output of 'dmesg' that gets sent?
Results at the end of the mail.
Thanks, that works.
If still needed i can install Ubuntu on an free partition on another PC ?
There is the possibility to upgrade to kernel 3.8.5.
No need, this is due to this being a "different" type of device, the HX
version.
I really don't know why prolific decided to change their device, yet use
the same device id, and not tell us how to talk to the device at all.
I can't understand why a driver for Mac is provided and not for Linux.
They (Prolific) relies on the in-kernel driver for Linux, which is fine,
but they have never given us the specs to ensure we are doing the right
thing, so it's not really fair.
There are so much embedded systems running Linux needing a converter
from RS232 to USB.
Agreed.
The fact that this driver even works is pretty amazing at times...
Yes - first i thought the hardware is broken.
There is no error message and sometimes some bytes are received after
connection. I checked the hardware on an PC running windows with the
driver from Profilic - it works perfect.
thanks,
greg k-h
Best regards
Karsten
Here the result for PL2303HX:
[ 1626.798549] USB Serial support registered for pl2303
[ 1626.798620] usbcore: registered new interface driver pl2303
[ 1626.798625] pl2303: Prolific PL2303 USB to serial adaptor driver
[ 1666.192803] usb 1-2.3: new full-speed USB device number 8 using ehci_hcd
[ 1666.302378] usb 1-2.3: New USB device found, idVendor=067b, idProduct=2303
[ 1666.302389] usb 1-2.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1666.302396] usb 1-2.3: Product: USB-Serial Controller
[ 1666.302401] usb 1-2.3: Manufacturer: Prolific Technology Inc.
[ 1666.302866] pl2303 1-2.3:1.0: pl2303 converter detected
[ 1666.302881] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c: device type: 2
That's a crazy build system line :)
Yes. But the source seems not to be touched by Debian (attached).
Anyway, yes, the deviec is detected properly.
Yes. Everything looks normal, but received data is lost in hyperspace. :)
[ 1666.303000] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c:
0xc0:0x1:0x8484:0x0 1 - 2
[ 1666.303121] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c: 0x40:0x1:0x404:0x0 0
[ 1666.303246] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c:
0xc0:0x1:0x8484:0x0 1 - 2
[ 1666.303371] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c:
0xc0:0x1:0x8383:0x0 1 - 0
[ 1666.303496] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c:
0xc0:0x1:0x8484:0x0 1 - 2
[ 1666.303620] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c: 0x40:0x1:0x404:0x1 0
[ 1666.303746] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c:
0xc0:0x1:0x8484:0x0 1 - 2
[ 1666.303996] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c:
0xc0:0x1:0x8383:0x0 1 - 0
[ 1666.304124] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c: 0x40:0x1:0x0:0x1 0
[ 1666.304248] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c: 0x40:0x1:0x1:0x0 0
[ 1666.304373] /build/buildd-linux_3.2.23-1-amd64-zj7gxu/linux-3.2.23/drivers/usb/serial/pl2303.c: 0x40:0x1:0x2:0x44 0
[ 1666.304583] usb 1-2.3: pl2303 converter now attached to ttyUSB0
Ok, all looks good here, then, what happens when you send data through
the device? You say sometimes it works, and others it doesn't?
At this test the device was receiving data.
There is a connected microcontroller that sends some testdata every second (simply numeric counter).
When i open a connection with putty or cutecom sometimes i can see about 4 incoming characters after opening the connection.
Is there a possibility for more debugging of this dataflow?
As I don't have one of these devices, (the HX version), and no specs,
there's not much we can really do here to help, I'm sorry to say :(
http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=350568364250
Spending some time and US $1.67 will give you such a device.
But of course you can't buy every hardware for every problem that occurs.
So it makes more sense if i could help to solve the problem.
Can you contact Prolific?
I already have written an email.
When i get an answer i will try to discuss the problem with them and give you the results.
But you have written they will not be really cooperative so i am not very hopeful.
We will see ...
The data sheet seems not to offer really much details.
There is a newer one but without any usable information:
http://www.prolific.com.tw/UserFiles/files/ds_pl2303HXD_v1_4_4.pdf
I give up trying to understand it, but I will try to get additional information.
Maybe something can be found here:
http://prolificusa.com/portfolio/pl2303hx-rev-d-usb-to-serial-bridge-controller/
http://prolificusa.com/files/PL2303HXD_Android_SDK_v1002.zip
SDK Package includes following:
——————————-
1. PL2303 Sample Test Android App Software (ap_PL2303HXDSimpleTest.apk)
2. PL2303 Android USB Host Solution Application Note
3. PL2303 Sample Test Android App Source Code
4. PL2303 Android Java Driver Library (pl2303driver.jar)
5. PL2303 Android App Development Reference Documents
If needed here the result with the old PL2303H:
Yeah, those work, I have one of those. Any chance of just using this
device instead?
Yes - but i have only one of it.
I want to use some more of this cheap and usable chinese interfaces to connect AVR µC.
There is the option to buy converter with the HL-340 chip (ID 1a86:7523), but the other one has the advantage to get
easy power supply and you don't need additional inverter for the RS232 interface.
Sorry,
greg k-h
Thank you for your help so far.
Regards
Karsten
/*
* Prolific PL2303 USB to serial adaptor driver
*
* Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@xxxxxxxxx)
* 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(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
{ 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(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_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) },
{ USB_DEVICE(SMART_VENDOR_ID, SMART_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);
if (baud <= 115200) {
buf[0] = baud & 0xff;
buf[1] = (baud >> 8) & 0xff;
buf[2] = (baud >> 16) & 0xff;
buf[3] = (baud >> 24) & 0xff;
} else {
/* apparently the formula for higher speeds is:
* baudrate = 12M * 32 / (2^buf[1]) / buf[0]
*/
unsigned tmp = 12*1000*1000*32 / baud;
buf[3] = 0x80;
buf[2] = 0;
buf[1] = (tmp >= 256);
while (tmp >= 256) {
tmp >>= 2;
buf[1] <<= 1;
}
buf[0] = tmp;
}
}
/* 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 if ((old_termios->c_cflag & CBAUD) == B0)
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,
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 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,
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);
struct tty_struct *tty;
unsigned long flags;
u8 status_idx = UART_STATE;
u8 length = UART_STATE + 1;
u8 prev_line_status;
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);
prev_line_status = priv->line_status;
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);
tty = tty_port_tty_get(&port->port);
if (!tty)
return;
if ((priv->line_status ^ prev_line_status) & UART_DCD)
usb_serial_handle_dcd_change(port, tty,
priv->line_status & UART_DCD);
tty_kref_put(tty);
}
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(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");
