mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
466 lines
12 KiB
C
466 lines
12 KiB
C
|
/*
|
||
|
* ark3116
|
||
|
* - implements a driver for the arkmicro ark3116 chipset (vendor=0x6547,
|
||
|
* productid=0x0232) (used in a datacable called KQ-U8A)
|
||
|
*
|
||
|
* - based on code by krisfx -> thanks !!
|
||
|
* (see http://www.linuxquestions.org/questions/showthread.php?p=2184457#post2184457)
|
||
|
*
|
||
|
* - based on logs created by usbsnoopy
|
||
|
*
|
||
|
* Author : Simon Schulz [ark3116_driver<AT>auctionant.de]
|
||
|
*
|
||
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
* under the terms of the GNU General Public License as published by the
|
||
|
* Free Software Foundation; either version 2 of the License, or (at your
|
||
|
* option) any later version.
|
||
|
*/
|
||
|
|
||
|
#include <linux/kernel.h>
|
||
|
#include <linux/init.h>
|
||
|
#include <linux/tty.h>
|
||
|
#include <linux/module.h>
|
||
|
#include <linux/usb.h>
|
||
|
#include "usb-serial.h"
|
||
|
|
||
|
|
||
|
static int debug;
|
||
|
|
||
|
static struct usb_device_id id_table [] = {
|
||
|
{ USB_DEVICE(0x6547, 0x0232) },
|
||
|
{ },
|
||
|
};
|
||
|
MODULE_DEVICE_TABLE(usb, id_table);
|
||
|
|
||
|
struct ark3116_private {
|
||
|
spinlock_t lock;
|
||
|
u8 termios_initialized;
|
||
|
};
|
||
|
|
||
|
static inline void ARK3116_SND(struct usb_serial *serial, int seq,
|
||
|
__u8 request, __u8 requesttype,
|
||
|
__u16 value, __u16 index)
|
||
|
{
|
||
|
int result;
|
||
|
result = usb_control_msg(serial->dev,
|
||
|
usb_sndctrlpipe(serial->dev,0),
|
||
|
request, requesttype, value, index,
|
||
|
NULL,0x00, 1000);
|
||
|
dbg("%03d > ok",seq);
|
||
|
}
|
||
|
|
||
|
static inline void ARK3116_RCV(struct usb_serial *serial, int seq,
|
||
|
__u8 request, __u8 requesttype,
|
||
|
__u16 value, __u16 index, __u8 expected,
|
||
|
char *buf)
|
||
|
{
|
||
|
int result;
|
||
|
result = usb_control_msg(serial->dev,
|
||
|
usb_rcvctrlpipe(serial->dev,0),
|
||
|
request, requesttype, value, index,
|
||
|
buf, 0x0000001, 1000);
|
||
|
if (result)
|
||
|
dbg("%03d < %d bytes [0x%02X]",seq, result, buf[0]);
|
||
|
else
|
||
|
dbg("%03d < 0 bytes", seq);
|
||
|
}
|
||
|
|
||
|
|
||
|
static inline void ARK3116_RCV_QUIET(struct usb_serial *serial,
|
||
|
__u8 request, __u8 requesttype,
|
||
|
__u16 value, __u16 index, char *buf)
|
||
|
{
|
||
|
usb_control_msg(serial->dev,
|
||
|
usb_rcvctrlpipe(serial->dev,0),
|
||
|
request, requesttype, value, index,
|
||
|
buf, 0x0000001, 1000);
|
||
|
}
|
||
|
|
||
|
|
||
|
static int ark3116_attach(struct usb_serial *serial)
|
||
|
{
|
||
|
char *buf;
|
||
|
struct ark3116_private *priv;
|
||
|
int i;
|
||
|
|
||
|
for (i = 0; i < serial->num_ports; ++i) {
|
||
|
priv = kmalloc (sizeof (struct ark3116_private), GFP_KERNEL);
|
||
|
if (!priv)
|
||
|
goto cleanup;
|
||
|
memset (priv, 0x00, sizeof (struct ark3116_private));
|
||
|
spin_lock_init(&priv->lock);
|
||
|
|
||
|
usb_set_serial_port_data(serial->port[i], priv);
|
||
|
}
|
||
|
|
||
|
buf = kmalloc(1, GFP_KERNEL);
|
||
|
if (!buf) {
|
||
|
dbg("error kmalloc -> out of mem ?");
|
||
|
goto cleanup;
|
||
|
}
|
||
|
|
||
|
/* 3 */
|
||
|
ARK3116_SND(serial, 3,0xFE,0x40,0x0008,0x0002);
|
||
|
ARK3116_SND(serial, 4,0xFE,0x40,0x0008,0x0001);
|
||
|
ARK3116_SND(serial, 5,0xFE,0x40,0x0000,0x0008);
|
||
|
ARK3116_SND(serial, 6,0xFE,0x40,0x0000,0x000B);
|
||
|
|
||
|
/* <-- seq7 */
|
||
|
ARK3116_RCV(serial, 7,0xFE,0xC0,0x0000,0x0003, 0x00, buf);
|
||
|
ARK3116_SND(serial, 8,0xFE,0x40,0x0080,0x0003);
|
||
|
ARK3116_SND(serial, 9,0xFE,0x40,0x001A,0x0000);
|
||
|
ARK3116_SND(serial,10,0xFE,0x40,0x0000,0x0001);
|
||
|
ARK3116_SND(serial,11,0xFE,0x40,0x0000,0x0003);
|
||
|
|
||
|
/* <-- seq12 */
|
||
|
ARK3116_RCV(serial,12,0xFE,0xC0,0x0000,0x0004, 0x00, buf);
|
||
|
ARK3116_SND(serial,13,0xFE,0x40,0x0000,0x0004);
|
||
|
|
||
|
/* 14 */
|
||
|
ARK3116_RCV(serial,14,0xFE,0xC0,0x0000,0x0004, 0x00, buf);
|
||
|
ARK3116_SND(serial,15,0xFE,0x40,0x0000,0x0004);
|
||
|
|
||
|
/* 16 */
|
||
|
ARK3116_RCV(serial,16,0xFE,0xC0,0x0000,0x0004, 0x00, buf);
|
||
|
/* --> seq17 */
|
||
|
ARK3116_SND(serial,17,0xFE,0x40,0x0001,0x0004);
|
||
|
|
||
|
/* <-- seq18 */
|
||
|
ARK3116_RCV(serial,18,0xFE,0xC0,0x0000,0x0004, 0x01, buf);
|
||
|
|
||
|
/* --> seq19 */
|
||
|
ARK3116_SND(serial,19,0xFE,0x40,0x0003,0x0004);
|
||
|
|
||
|
|
||
|
/* <-- seq20 */
|
||
|
/* seems like serial port status info (RTS, CTS,...) */
|
||
|
/* returns modem control line status ?! */
|
||
|
ARK3116_RCV(serial,20,0xFE,0xC0,0x0000,0x0006, 0xFF, buf);
|
||
|
|
||
|
/* set 9600 baud & do some init ?! */
|
||
|
ARK3116_SND(serial,147,0xFE,0x40,0x0083,0x0003);
|
||
|
ARK3116_SND(serial,148,0xFE,0x40,0x0038,0x0000);
|
||
|
ARK3116_SND(serial,149,0xFE,0x40,0x0001,0x0001);
|
||
|
ARK3116_SND(serial,150,0xFE,0x40,0x0003,0x0003);
|
||
|
ARK3116_RCV(serial,151,0xFE,0xC0,0x0000,0x0004,0x03, buf);
|
||
|
ARK3116_SND(serial,152,0xFE,0x40,0x0000,0x0003);
|
||
|
ARK3116_RCV(serial,153,0xFE,0xC0,0x0000,0x0003,0x00, buf);
|
||
|
ARK3116_SND(serial,154,0xFE,0x40,0x0003,0x0003);
|
||
|
|
||
|
kfree(buf);
|
||
|
return(0);
|
||
|
|
||
|
cleanup:
|
||
|
for (--i; i>=0; --i)
|
||
|
usb_set_serial_port_data(serial->port[i], NULL);
|
||
|
return -ENOMEM;
|
||
|
}
|
||
|
|
||
|
static void ark3116_set_termios(struct usb_serial_port *port,
|
||
|
struct termios *old_termios)
|
||
|
{
|
||
|
struct usb_serial *serial = port->serial;
|
||
|
struct ark3116_private *priv = usb_get_serial_port_data(port);
|
||
|
unsigned int cflag = port->tty->termios->c_cflag;
|
||
|
unsigned long flags;
|
||
|
int baud;
|
||
|
int ark3116_baud;
|
||
|
char *buf;
|
||
|
char config;
|
||
|
|
||
|
config = 0;
|
||
|
|
||
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
||
|
|
||
|
if ((!port->tty) || (!port->tty->termios)) {
|
||
|
dbg("%s - no tty structures", __FUNCTION__);
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
spin_lock_irqsave(&priv->lock, flags);
|
||
|
if (!priv->termios_initialized) {
|
||
|
*(port->tty->termios) = tty_std_termios;
|
||
|
port->tty->termios->c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
|
||
|
priv->termios_initialized = 1;
|
||
|
}
|
||
|
spin_unlock_irqrestore(&priv->lock, flags);
|
||
|
|
||
|
cflag = port->tty->termios->c_cflag;
|
||
|
|
||
|
/* check that they really want us to change something: */
|
||
|
if (old_termios) {
|
||
|
if ((cflag == old_termios->c_cflag) &&
|
||
|
(RELEVANT_IFLAG(port->tty->termios->c_iflag) ==
|
||
|
RELEVANT_IFLAG(old_termios->c_iflag))) {
|
||
|
dbg("%s - nothing to change...", __FUNCTION__);
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
buf = kmalloc(1, GFP_KERNEL);
|
||
|
if (!buf) {
|
||
|
dbg("error kmalloc");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/* set data bit count (8/7/6/5) */
|
||
|
if (cflag & CSIZE){
|
||
|
switch (cflag & CSIZE){
|
||
|
case CS5:
|
||
|
config |= 0x00;
|
||
|
dbg("setting CS5");
|
||
|
break;
|
||
|
case CS6:
|
||
|
config |= 0x01;
|
||
|
dbg("setting CS6");
|
||
|
break;
|
||
|
case CS7:
|
||
|
config |= 0x02;
|
||
|
dbg("setting CS7");
|
||
|
break;
|
||
|
default:
|
||
|
err ("CSIZE was set but not CS5-CS8, using CS8!");
|
||
|
case CS8:
|
||
|
config |= 0x03;
|
||
|
dbg("setting CS8");
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* set parity (NONE,EVEN,ODD) */
|
||
|
if (cflag & PARENB){
|
||
|
if (cflag & PARODD) {
|
||
|
config |= 0x08;
|
||
|
dbg("setting parity to ODD");
|
||
|
} else {
|
||
|
config |= 0x18;
|
||
|
dbg("setting parity to EVEN");
|
||
|
}
|
||
|
} else {
|
||
|
dbg("setting parity to NONE");
|
||
|
}
|
||
|
|
||
|
/* SET STOPBIT (1/2) */
|
||
|
if (cflag & CSTOPB) {
|
||
|
config |= 0x04;
|
||
|
dbg ("setting 2 stop bits");
|
||
|
} else {
|
||
|
dbg ("setting 1 stop bit");
|
||
|
}
|
||
|
|
||
|
|
||
|
/* set baudrate: */
|
||
|
baud = 0;
|
||
|
switch (cflag & CBAUD){
|
||
|
case B0:
|
||
|
err("can't set 0baud, using 9600 instead");
|
||
|
break;
|
||
|
case B75: baud = 75; break;
|
||
|
case B150: baud = 150; break;
|
||
|
case B300: baud = 300; break;
|
||
|
case B600: baud = 600; break;
|
||
|
case B1200: baud = 1200; break;
|
||
|
case B1800: baud = 1800; break;
|
||
|
case B2400: baud = 2400; break;
|
||
|
case B4800: baud = 4800; break;
|
||
|
case B9600: baud = 9600; break;
|
||
|
case B19200: baud = 19200; break;
|
||
|
case B38400: baud = 38400; break;
|
||
|
case B57600: baud = 57600; break;
|
||
|
case B115200: baud = 115200; break;
|
||
|
case B230400: baud = 230400; break;
|
||
|
case B460800: baud = 460800; break;
|
||
|
default:
|
||
|
dbg("does not support the baudrate requested (fix it)");
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* set 9600 as default (if given baudrate is invalid for example) */
|
||
|
if (baud == 0)
|
||
|
baud = 9600;
|
||
|
|
||
|
/*
|
||
|
* found by try'n'error, be careful, maybe there are other options
|
||
|
* for multiplicator etc!
|
||
|
*/
|
||
|
if (baud == 460800)
|
||
|
/* strange, for 460800 the formula is wrong
|
||
|
* (dont use round(), then 9600baud is wrong) */
|
||
|
ark3116_baud = 7;
|
||
|
else
|
||
|
ark3116_baud = 3000000 / baud;
|
||
|
|
||
|
/* ? */
|
||
|
ARK3116_RCV(serial,0,0xFE,0xC0,0x0000,0x0003, 0x03, buf);
|
||
|
/* offset = buf[0]; */
|
||
|
/* offset = 0x03; */
|
||
|
/* dbg("using 0x%04X as target for 0x0003:",0x0080+offset); */
|
||
|
|
||
|
|
||
|
/* set baudrate */
|
||
|
dbg("setting baudrate to %d (->reg=%d)",baud,ark3116_baud);
|
||
|
ARK3116_SND(serial,147,0xFE,0x40,0x0083,0x0003);
|
||
|
ARK3116_SND(serial,148,0xFE,0x40,(ark3116_baud & 0x00FF) ,0x0000);
|
||
|
ARK3116_SND(serial,149,0xFE,0x40,(ark3116_baud & 0xFF00)>>8,0x0001);
|
||
|
ARK3116_SND(serial,150,0xFE,0x40,0x0003,0x0003);
|
||
|
|
||
|
/* ? */
|
||
|
ARK3116_RCV(serial,151,0xFE,0xC0,0x0000,0x0004,0x03, buf);
|
||
|
ARK3116_SND(serial,152,0xFE,0x40,0x0000,0x0003);
|
||
|
|
||
|
/* set data bit count, stop bit count & parity: */
|
||
|
dbg("updating bit count, stop bit or parity (cfg=0x%02X)", config);
|
||
|
ARK3116_RCV(serial,153,0xFE,0xC0,0x0000,0x0003,0x00, buf);
|
||
|
ARK3116_SND(serial,154,0xFE,0x40,config,0x0003);
|
||
|
|
||
|
if (cflag & CRTSCTS)
|
||
|
dbg("CRTSCTS not supported by chipset ?!");
|
||
|
|
||
|
/* TEST ARK3116_SND(154,0xFE,0x40,0xFFFF, 0x0006); */
|
||
|
|
||
|
kfree(buf);
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
static int ark3116_open(struct usb_serial_port *port, struct file *filp)
|
||
|
{
|
||
|
struct termios tmp_termios;
|
||
|
struct usb_serial *serial = port->serial;
|
||
|
char *buf;
|
||
|
int result = 0;
|
||
|
|
||
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
||
|
|
||
|
buf = kmalloc(1, GFP_KERNEL);
|
||
|
if (!buf) {
|
||
|
dbg("error kmalloc -> out of mem ?");
|
||
|
return -ENOMEM;
|
||
|
}
|
||
|
|
||
|
result = usb_serial_generic_open(port, filp);
|
||
|
if (result)
|
||
|
return result;
|
||
|
|
||
|
/* open */
|
||
|
ARK3116_RCV(serial,111,0xFE,0xC0,0x0000,0x0003, 0x02, buf);
|
||
|
|
||
|
ARK3116_SND(serial,112,0xFE,0x40,0x0082,0x0003);
|
||
|
ARK3116_SND(serial,113,0xFE,0x40,0x001A,0x0000);
|
||
|
ARK3116_SND(serial,114,0xFE,0x40,0x0000,0x0001);
|
||
|
ARK3116_SND(serial,115,0xFE,0x40,0x0002,0x0003);
|
||
|
|
||
|
ARK3116_RCV(serial,116,0xFE,0xC0,0x0000,0x0004, 0x03, buf);
|
||
|
ARK3116_SND(serial,117,0xFE,0x40,0x0002,0x0004);
|
||
|
|
||
|
ARK3116_RCV(serial,118,0xFE,0xC0,0x0000,0x0004, 0x02, buf);
|
||
|
ARK3116_SND(serial,119,0xFE,0x40,0x0000,0x0004);
|
||
|
|
||
|
ARK3116_RCV(serial,120,0xFE,0xC0,0x0000,0x0004, 0x00, buf);
|
||
|
|
||
|
ARK3116_SND(serial,121,0xFE,0x40,0x0001,0x0004);
|
||
|
|
||
|
ARK3116_RCV(serial,122,0xFE,0xC0,0x0000,0x0004, 0x01, buf);
|
||
|
|
||
|
ARK3116_SND(serial,123,0xFE,0x40,0x0003,0x0004);
|
||
|
|
||
|
/* returns different values (control lines ?!) */
|
||
|
ARK3116_RCV(serial,124,0xFE,0xC0,0x0000,0x0006, 0xFF, buf);
|
||
|
|
||
|
/* initialise termios: */
|
||
|
if (port->tty)
|
||
|
ark3116_set_termios(port, &tmp_termios);
|
||
|
|
||
|
kfree(buf);
|
||
|
|
||
|
return result;
|
||
|
|
||
|
}
|
||
|
|
||
|
static int ark3116_ioctl(struct usb_serial_port *port, struct file *file,
|
||
|
unsigned int cmd, unsigned long arg)
|
||
|
{
|
||
|
dbg("ioctl not supported yet...");
|
||
|
return -ENOIOCTLCMD;
|
||
|
}
|
||
|
|
||
|
static int ark3116_tiocmget(struct usb_serial_port *port, struct file *file)
|
||
|
{
|
||
|
struct usb_serial *serial = port->serial;
|
||
|
char *buf;
|
||
|
char temp;
|
||
|
|
||
|
/* seems like serial port status info (RTS, CTS,...) is stored
|
||
|
* in reg(?) 0x0006
|
||
|
* pcb connection point 11 = GND -> sets bit4 of response
|
||
|
* pcb connection point 7 = GND -> sets bit6 of response
|
||
|
*/
|
||
|
|
||
|
buf = kmalloc(1, GFP_KERNEL);
|
||
|
if (!buf) {
|
||
|
dbg("error kmalloc");
|
||
|
return -ENOMEM;
|
||
|
}
|
||
|
|
||
|
/* read register: */
|
||
|
ARK3116_RCV_QUIET(serial,0xFE,0xC0,0x0000,0x0006,buf);
|
||
|
temp = buf[0];
|
||
|
kfree(buf);
|
||
|
|
||
|
/* i do not really know if bit4=CTS and bit6=DSR... was just a
|
||
|
* quick guess !!
|
||
|
*/
|
||
|
return (temp & (1<<4) ? TIOCM_CTS : 0) |
|
||
|
(temp & (1<<6) ? TIOCM_DSR : 0);
|
||
|
}
|
||
|
|
||
|
static struct usb_driver ark3116_driver = {
|
||
|
.name = "ark3116",
|
||
|
.probe = usb_serial_probe,
|
||
|
.disconnect = usb_serial_disconnect,
|
||
|
.id_table = id_table,
|
||
|
};
|
||
|
|
||
|
static struct usb_serial_driver ark3116_device = {
|
||
|
.driver = {
|
||
|
.owner = THIS_MODULE,
|
||
|
.name = "ark3116",
|
||
|
},
|
||
|
.id_table = id_table,
|
||
|
.num_interrupt_in = 1,
|
||
|
.num_bulk_in = 1,
|
||
|
.num_bulk_out = 1,
|
||
|
.num_ports = 1,
|
||
|
.attach = ark3116_attach,
|
||
|
.set_termios = ark3116_set_termios,
|
||
|
.ioctl = ark3116_ioctl,
|
||
|
.tiocmget = ark3116_tiocmget,
|
||
|
.open = ark3116_open,
|
||
|
};
|
||
|
|
||
|
static int __init ark3116_init(void)
|
||
|
{
|
||
|
int retval;
|
||
|
|
||
|
retval = usb_serial_register(&ark3116_device);
|
||
|
if (retval)
|
||
|
return retval;
|
||
|
retval = usb_register(&ark3116_driver);
|
||
|
if (retval)
|
||
|
usb_serial_deregister(&ark3116_device);
|
||
|
return retval;
|
||
|
}
|
||
|
|
||
|
static void __exit ark3116_exit(void)
|
||
|
{
|
||
|
usb_deregister(&ark3116_driver);
|
||
|
usb_serial_deregister(&ark3116_device);
|
||
|
}
|
||
|
|
||
|
module_init(ark3116_init);
|
||
|
module_exit(ark3116_exit);
|
||
|
MODULE_LICENSE("GPL");
|
||
|
|
||
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
||
|
MODULE_PARM_DESC(debug, "Debug enabled or not");
|
||
|
|