Hi, This patch against the 2.5.8-pre3 kernel adds /proc/tty support for all of the usb serial drivers. This is something I wanted to add for a while, and only recently realized that the tty layer offered a very easy interface for this (supply a read_proc or write_proc function pointer, and the tty layer will create and handle the proper proc file for your driver.)
The output of the file right now looks something like this with a bunch of devices connected: ---- [greg@blue serial]# cat /proc/tty/driver/usb-serial usbserinfo:1.0 driver:v1.5 0: module:io_edgeport name:"Edgeport 4 port adapter" vendor:1608 product:0001 num_ports:4 port:1 path:usb-00:1f.2-1 1: module:io_edgeport name:"Edgeport 4 port adapter" vendor:1608 product:0001 num_ports:4 port:2 path:usb-00:1f.2-1 2: module:io_edgeport name:"Edgeport 4 port adapter" vendor:1608 product:0001 num_ports:4 port:3 path:usb-00:1f.2-1 3: module:io_edgeport name:"Edgeport 4 port adapter" vendor:1608 product:0001 num_ports:4 port:4 path:usb-00:1f.2-1 4: module:keyspan_pda name:"Keyspan PDA" vendor:06cd product:0104 num_ports:1 port:1 path:usb-00:1f.2-2.3 5: module:whiteheat name:"Connect Tech - WhiteHEAT" vendor:0710 product:8001 num_ports:4 port:1 path:usb-01:0d.0-2 6: module:whiteheat name:"Connect Tech - WhiteHEAT" vendor:0710 product:8001 num_ports:4 port:2 path:usb-01:0d.0-2 7: module:whiteheat name:"Connect Tech - WhiteHEAT" vendor:0710 product:8001 num_ports:4 port:3 path:usb-01:0d.0-2 8: module:whiteheat name:"Connect Tech - WhiteHEAT" vendor:0710 product:8001 num_ports:4 port:4 path:usb-01:0d.0-2 9: module:visor name:"Handspring Visor / Palm 4.0 / Cli� 4.x" vendor:082d product:0100 num_ports:2 port:1 path:usb-01:0d.0-1 10: module:visor name:"Handspring Visor / Palm 4.0 / Cli� 4.x" vendor:082d product:0100 num_ports:2 port:2 path:usb-01:0d.0-1 ---- If anyone has anything else in the struct usb_serial or struct usb_serial_port variables that they would like to see exported through this interface, please let me know. thanks, greg k-h diff -Nru a/drivers/usb/serial/usbserial.c b/drivers/usb/serial/usbserial.c --- a/drivers/usb/serial/usbserial.c Wed Apr 10 17:03:50 2002 +++ b/drivers/usb/serial/usbserial.c Wed Apr 10 17:03:50 2002 @@ -15,6 +15,10 @@ * * See Documentation/usb/usb-serial.txt for more information on using this driver * + * (04/10/2002) gkh + * added serial_read_proc function which creates a + * /proc/tty/driver/usb-serial file. + * * (03/27/2002) gkh * Got USB serial console code working properly and merged into the main * version of the tree. Thanks to Randy Dunlap for the initial version @@ -340,7 +344,7 @@ /* * Version Information */ -#define DRIVER_VERSION "v1.4" +#define DRIVER_VERSION "v1.5" #define DRIVER_AUTHOR "Greg Kroah-Hartman, [EMAIL PROTECTED], http://www.kroah.com/linux-usb/"; #define DRIVER_DESC "USB Serial Driver core" @@ -844,6 +848,48 @@ generic_shutdown(serial); } +static int serial_read_proc (char *page, char **start, off_t off, int count, int +*eof, void *data) +{ + struct usb_serial *serial; + int length = 0; + int i; + off_t begin = 0; + char tmp[40]; + + dbg(__FUNCTION__); + length += sprintf (page, "usbserinfo:1.0 driver:%s\n", DRIVER_VERSION); + for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) { + serial = get_serial_by_minor(i); + if (serial == NULL) + continue; + + length += sprintf (page+length, "%d:", i); + if (serial->type->owner) + length += sprintf (page+length, " module:%s", +serial->type->owner->name); + length += sprintf (page+length, " name:\"%s\"", serial->type->name); + length += sprintf (page+length, " vendor:%04x product:%04x", +serial->vendor, serial->product); + length += sprintf (page+length, " num_ports:%d", serial->num_ports); + length += sprintf (page+length, " port:%d", i - serial->minor + 1); + + usb_make_path(serial->dev, tmp, sizeof(tmp)); + length += sprintf (page+length, " path:%s", tmp); + + length += sprintf (page+length, "\n"); + if ((length + begin) > (off + count)) + goto done; + if ((length + begin) < off) { + begin += length; + length = 0; + } + } + *eof = 1; +done: + if (off >= (length + begin)) + return 0; + *start = page + (off-begin); + return ((count < begin+length-off) ? count : begin+length-off); +} + /***************************************************************************** * generic devices specific driver functions *****************************************************************************/ @@ -1491,6 +1537,7 @@ unthrottle: serial_unthrottle, break_ctl: serial_break, chars_in_buffer: serial_chars_in_buffer, + read_proc: serial_read_proc, }; _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
