[PATCH] USB: add ark3116 usb to serial driver
authorGreg Kroah-Hartman <gregkh@suse.de>
Fri, 12 May 2006 18:05:29 +0000 (11:05 -0700)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 12 May 2006 18:58:09 +0000 (11:58 -0700)
Based on Simon's original driver, with some minor code cleanups and
tidying by me.

Cc: Simon Schulz <simon@auctionant.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/serial/Kconfig
drivers/usb/serial/Makefile
drivers/usb/serial/ark3116.c [new file with mode: 0644]
drivers/usb/serial/generic.c

index f96b73f54bf1cdb7d4840d7b3c1c0600c8e4d6a0..5c60be521561a5fdeed21d5bd4df5a37b5a9ee9b 100644 (file)
@@ -71,6 +71,16 @@ config USB_SERIAL_ANYDATA
          To compile this driver as a module, choose M here: the
          module will be called anydata.
 
+config USB_SERIAL_ARK3116
+       tristate "USB ARK Micro 3116 USB Serial Driver (EXPERIMENTAL)"
+       depends on USB_SERIAL && EXPERIMENTAL
+       help
+         Say Y here if you want to use a ARK Micro 3116 USB to Serial
+         device.
+
+         To compile this driver as a module, choose M here: the
+         module will be called ark3116
+
 config USB_SERIAL_BELKIN
        tristate "USB Belkin and Peracom Single Port Serial Driver"
        depends on USB_SERIAL
index 93c21245b1af713d52974d7eec80097073f52ee1..5a0960fc9d3e3facbfce9e90a0175e0fa25e4e46 100644 (file)
@@ -13,6 +13,7 @@ usbserial-objs        := usb-serial.o generic.o bus.o $(usbserial-obj-y)
 
 obj-$(CONFIG_USB_SERIAL_AIRPRIME)              += airprime.o
 obj-$(CONFIG_USB_SERIAL_ANYDATA)               += anydata.o
+obj-$(CONFIG_USB_SERIAL_ARK3116)               += ark3116.o
 obj-$(CONFIG_USB_SERIAL_BELKIN)                        += belkin_sa.o
 obj-$(CONFIG_USB_SERIAL_CP2101)                        += cp2101.o
 obj-$(CONFIG_USB_SERIAL_CYBERJACK)             += cyberjack.o
diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c
new file mode 100644 (file)
index 0000000..8dec796
--- /dev/null
@@ -0,0 +1,465 @@
+/*
+ * 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");
+
index 476cda107f4fa8bcf0ef2fe53a04d9f37f4a698d..c62cc2876519629a6bd39e8b6284b84a51d201ab 100644 (file)
@@ -138,6 +138,7 @@ int usb_serial_generic_open (struct usb_serial_port *port, struct file *filp)
 
        return result;
 }
+EXPORT_SYMBOL_GPL(usb_serial_generic_open);
 
 static void generic_cleanup (struct usb_serial_port *port)
 {