From 60a8fc017103325db4b56e4f175f060a6aaac147 Mon Sep 17 00:00:00 2001 From: Alain Degreffe Date: Fri, 26 Oct 2007 13:51:49 +0200 Subject: USB: add iuu_phoenix driver Signed-off-by: Alain Degreffe Cc: Alan Cox Cc: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- Documentation/usb/iuu_phoenix.txt | 84 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 Documentation/usb/iuu_phoenix.txt (limited to 'Documentation') diff --git a/Documentation/usb/iuu_phoenix.txt b/Documentation/usb/iuu_phoenix.txt new file mode 100644 index 000000000000..e5f048067da4 --- /dev/null +++ b/Documentation/usb/iuu_phoenix.txt @@ -0,0 +1,84 @@ +Infinity Usb Unlimited Readme +----------------------------- + +Hi all, + + +This module provide a serial interface to use your +IUU unit in phoenix mode. Loading this module will +bring a ttyUSB[0-x] interface. This driver must be +used by your favorite application to pilot the IUU + +This driver is still in beta stage, so bugs can +occur and your system may freeze. As far I now, +I never had any problem with it, but I'm not a real +guru, so don't blame me if your system is unstable + +You can plug more than one IUU. Every unit will +have his own device file(/dev/ttyUSB0,/dev/ttyUSB1,...) + + + +How to tune the reader speed ? + + A few parameters can be used at load time + To use parameters, just unload the module if it is + already loaded and use modprobe iuu_phoenix param=value. + In case of prebuilt module, use the command + insmod iuu_phoenix param=value. + + Example: + + modprobe iuu_phoenix clockmode=3 + + The parameters are: + + parm: clockmode:1=3Mhz579,2=3Mhz680,3=6Mhz (int) + parm: boost:overclock boost percent 100 to 500 (int) + parm: cdmode:Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, 4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING (int) + parm: xmas:xmas color enabled or not (bool) + parm: debug:Debug enabled or not (bool) + +- clockmode will provide 3 different base settings commonly adopted by + different software: + 1. 3Mhz579 + 2. 3Mhz680 + 3. 6Mhz + +- boost provide a way to overclock the reader ( my favorite :-) ) + For example to have best performance than a simple clockmode=3, try this: + + modprobe boost=195 + + This will put the reader in a base of 3Mhz579 but boosted a 195 % ! + the real clock will be now : 6979050 Hz ( 6Mhz979 ) and will increase + the speed to a score 10 to 20% better than the simple clockmode=3 !!! + + +- cdmode permit to setup the signal used to inform the userland ( ioctl answer ) + if the card is present or not. Eight signals are possible. + +- xmas is completely useless except for your eyes. This is one of my friend who was + so sad to have a nice device like the iuu without seeing all color range available. + So I have added this option to permit him to see a lot of color ( each activity change the color + and the frequency randomly ) + +- debug will produce a lot of debugging messages... + + + Last notes: + + Don't worry about the serial settings, the serial emulation + is an abstraction, so use any speed or parity setting will + work. ( This will not change anything ).Later I will perhaps + use this settings to deduce de boost but is that feature + really necessary ? + The autodetect feature used is the serial CD. If that doesn't + work for your software, disable detection mechanism in it. + + + Have fun ! + + Alain Degreffe + + eczema(at)ecze.com -- cgit v1.2.3 From 25a010c8c1a5f0cc2e2794adf969e2df2ad1f0b6 Mon Sep 17 00:00:00 2001 From: "Craig W. Nadler" Date: Sun, 11 Nov 2007 15:00:15 -0800 Subject: USB: add Printer Gadget Driver G_PRINTER: Adds a USB printer gadget driver for use in printer firmware. This adds a USB printer gadget driver for use in printer firmware. The printer gadget channels data between the USB host and a userspace program driving the print engine. The user space program reads and writes the device file /dev/g_printer to receive or send printer data. It can use ioctl calls to the device file to get or set printer status. Signed-off-by: Craig W. Nadler Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- Documentation/usb/gadget_printer.txt | 510 +++++++++++++++++++++++++++++++++++ 1 file changed, 510 insertions(+) create mode 100644 Documentation/usb/gadget_printer.txt (limited to 'Documentation') diff --git a/Documentation/usb/gadget_printer.txt b/Documentation/usb/gadget_printer.txt new file mode 100644 index 000000000000..ad995bf0db41 --- /dev/null +++ b/Documentation/usb/gadget_printer.txt @@ -0,0 +1,510 @@ + + Linux USB Printer Gadget Driver + 06/04/2007 + + Copyright (C) 2007 Craig W. Nadler + + + +GENERAL +======= + +This driver may be used if you are writing printer firmware using Linux as +the embedded OS. This driver has nothing to do with using a printer with +your Linux host system. + +You will need a USB device controller and a Linux driver for it that accepts +a gadget / "device class" driver using the Linux USB Gadget API. After the +USB device controller driver is loaded then load the printer gadget driver. +This will present a printer interface to the USB Host that your USB Device +port is connected to. + +This driver is structured for printer firmware that runs in user mode. The +user mode printer firmware will read and write data from the kernel mode +printer gadget driver using a device file. The printer returns a printer status +byte when the USB HOST sends a device request to get the printer status. The +user space firmware can read or write this status byte using a device file +/dev/g_printer . Both blocking and non-blocking read/write calls are supported. + + + + +HOWTO USE THIS DRIVER +===================== + +To load the USB device controller driver and the printer gadget driver. The +following example uses the Netchip 2280 USB device controller driver: + +modprobe net2280 +modprobe g_printer + + +The follow command line parameter can be used when loading the printer gadget +(ex: modprobe g_printer idVendor=0x0525 idProduct=0xa4a8 ): + +idVendor - This is the Vendor ID used in the device descriptor. The default is + the Netchip vendor id 0x0525. YOU MUST CHANGE TO YOUR OWN VENDOR ID + BEFORE RELEASING A PRODUCT. If you plan to release a product and don't + already have a Vendor ID please see www.usb.org for details on how to + get one. + +idProduct - This is the Product ID used in the device descriptor. The default + is 0xa4a8, you should change this to an ID that's not used by any of + your other USB products if you have any. It would be a good idea to + start numbering your products starting with say 0x0001. + +bcdDevice - This is the version number of your product. It would be a good idea + to put your firmware version here. + +iManufacturer - A string containing the name of the Vendor. + +iProduct - A string containing the Product Name. + +iSerialNum - A string containing the Serial Number. This should be changed for + each unit of your product. + +iPNPstring - The PNP ID string used for this printer. You will want to set + either on the command line or hard code the PNP ID string used for + your printer product. + +qlen - The number of 8k buffers to use per endpoint. The default is 10, you + should tune this for your product. You may also want to tune the + size of each buffer for your product. + + + + +USING THE EXAMPLE CODE +====================== + +This example code talks to stdout, instead of a print engine. + +To compile the test code below: + +1) save it to a file called prn_example.c +2) compile the code with the follow command: + gcc prn_example.c -o prn_example + + + +To read printer data from the host to stdout: + + # prn_example -read_data + + +To write printer data from a file (data_file) to the host: + + # cat data_file | prn_example -write_data + + +To get the current printer status for the gadget driver: + + # prn_example -get_status + + Printer status is: + Printer is NOT Selected + Paper is Out + Printer OK + + +To set printer to Selected/On-line: + + # prn_example -selected + + +To set printer to Not Selected/Off-line: + + # prn_example -not_selected + + +To set paper status to paper out: + + # prn_example -paper_out + + +To set paper status to paper loaded: + + # prn_example -paper_loaded + + +To set error status to printer OK: + + # prn_example -no_error + + +To set error status to ERROR: + + # prn_example -error + + + + +EXAMPLE CODE +============ + + +#include +#include +#include +#include +#include +#include + +#define PRINTER_FILE "/dev/g_printer" +#define BUF_SIZE 512 + + +/* + * 'usage()' - Show program usage. + */ + +static void +usage(const char *option) /* I - Option string or NULL */ +{ + if (option) { + fprintf(stderr,"prn_example: Unknown option \"%s\"!\n", + option); + } + + fputs("\n", stderr); + fputs("Usage: prn_example -[options]\n", stderr); + fputs("Options:\n", stderr); + fputs("\n", stderr); + fputs("-get_status Get the current printer status.\n", stderr); + fputs("-selected Set the selected status to selected.\n", stderr); + fputs("-not_selected Set the selected status to NOT selected.\n", + stderr); + fputs("-error Set the error status to error.\n", stderr); + fputs("-no_error Set the error status to NO error.\n", stderr); + fputs("-paper_out Set the paper status to paper out.\n", stderr); + fputs("-paper_loaded Set the paper status to paper loaded.\n", + stderr); + fputs("-read_data Read printer data from driver.\n", stderr); + fputs("-write_data Write printer sata to driver.\n", stderr); + fputs("-NB_read_data (Non-Blocking) Read printer data from driver.\n", + stderr); + fputs("\n\n", stderr); + + exit(1); +} + + +static int +read_printer_data() +{ + struct pollfd fd[1]; + + /* Open device file for printer gadget. */ + fd[0].fd = open(PRINTER_FILE, O_RDWR); + if (fd[0].fd < 0) { + printf("Error %d opening %s\n", fd[0].fd, PRINTER_FILE); + close(fd[0].fd); + return(-1); + } + + fd[0].events = POLLIN | POLLRDNORM; + + while (1) { + static char buf[BUF_SIZE]; + int bytes_read; + int retval; + + /* Wait for up to 1 second for data. */ + retval = poll(fd, 1, 1000); + + if (retval && (fd[0].revents & POLLRDNORM)) { + + /* Read data from printer gadget driver. */ + bytes_read = read(fd[0].fd, buf, BUF_SIZE); + + if (bytes_read < 0) { + printf("Error %d reading from %s\n", + fd[0].fd, PRINTER_FILE); + close(fd[0].fd); + return(-1); + } else if (bytes_read > 0) { + /* Write data to standard OUTPUT (stdout). */ + fwrite(buf, 1, bytes_read, stdout); + fflush(stdout); + } + + } + + } + + /* Close the device file. */ + close(fd[0].fd); + + return 0; +} + + +static int +write_printer_data() +{ + struct pollfd fd[1]; + + /* Open device file for printer gadget. */ + fd[0].fd = open (PRINTER_FILE, O_RDWR); + if (fd[0].fd < 0) { + printf("Error %d opening %s\n", fd[0].fd, PRINTER_FILE); + close(fd[0].fd); + return(-1); + } + + fd[0].events = POLLOUT | POLLWRNORM; + + while (1) { + int retval; + static char buf[BUF_SIZE]; + /* Read data from standard INPUT (stdin). */ + int bytes_read = fread(buf, 1, BUF_SIZE, stdin); + + if (!bytes_read) { + break; + } + + while (bytes_read) { + + /* Wait for up to 1 second to sent data. */ + retval = poll(fd, 1, 1000); + + /* Write data to printer gadget driver. */ + if (retval && (fd[0].revents & POLLWRNORM)) { + retval = write(fd[0].fd, buf, bytes_read); + if (retval < 0) { + printf("Error %d writing to %s\n", + fd[0].fd, + PRINTER_FILE); + close(fd[0].fd); + return(-1); + } else { + bytes_read -= retval; + } + + } + + } + + } + + /* Wait until the data has been sent. */ + fsync(fd[0].fd); + + /* Close the device file. */ + close(fd[0].fd); + + return 0; +} + + +static int +read_NB_printer_data() +{ + int fd; + static char buf[BUF_SIZE]; + int bytes_read; + + /* Open device file for printer gadget. */ + fd = open(PRINTER_FILE, O_RDWR|O_NONBLOCK); + if (fd < 0) { + printf("Error %d opening %s\n", fd, PRINTER_FILE); + close(fd); + return(-1); + } + + while (1) { + /* Read data from printer gadget driver. */ + bytes_read = read(fd, buf, BUF_SIZE); + if (bytes_read <= 0) { + break; + } + + /* Write data to standard OUTPUT (stdout). */ + fwrite(buf, 1, bytes_read, stdout); + fflush(stdout); + } + + /* Close the device file. */ + close(fd); + + return 0; +} + + +static int +get_printer_status() +{ + int retval; + int fd; + + /* Open device file for printer gadget. */ + fd = open(PRINTER_FILE, O_RDWR); + if (fd < 0) { + printf("Error %d opening %s\n", fd, PRINTER_FILE); + close(fd); + return(-1); + } + + /* Make the IOCTL call. */ + retval = ioctl(fd, GADGET_GET_PRINTER_STATUS); + if (retval < 0) { + fprintf(stderr, "ERROR: Failed to set printer status\n"); + return(-1); + } + + /* Close the device file. */ + close(fd); + + return(retval); +} + + +static int +set_printer_status(unsigned char buf, int clear_printer_status_bit) +{ + int retval; + int fd; + + retval = get_printer_status(); + if (retval < 0) { + fprintf(stderr, "ERROR: Failed to get printer status\n"); + return(-1); + } + + /* Open device file for printer gadget. */ + fd = open(PRINTER_FILE, O_RDWR); + + if (fd < 0) { + printf("Error %d opening %s\n", fd, PRINTER_FILE); + close(fd); + return(-1); + } + + if (clear_printer_status_bit) { + retval &= ~buf; + } else { + retval |= buf; + } + + /* Make the IOCTL call. */ + if (ioctl(fd, GADGET_SET_PRINTER_STATUS, (unsigned char)retval)) { + fprintf(stderr, "ERROR: Failed to set printer status\n"); + return(-1); + } + + /* Close the device file. */ + close(fd); + + return 0; +} + + +static int +display_printer_status() +{ + char printer_status; + + printer_status = get_printer_status(); + if (printer_status < 0) { + fprintf(stderr, "ERROR: Failed to get printer status\n"); + return(-1); + } + + printf("Printer status is:\n"); + if (printer_status & PRINTER_SELECTED) { + printf(" Printer is Selected\n"); + } else { + printf(" Printer is NOT Selected\n"); + } + if (printer_status & PRINTER_PAPER_EMPTY) { + printf(" Paper is Out\n"); + } else { + printf(" Paper is Loaded\n"); + } + if (printer_status & PRINTER_NOT_ERROR) { + printf(" Printer OK\n"); + } else { + printf(" Printer ERROR\n"); + } + + return(0); +} + + +int +main(int argc, char *argv[]) +{ + int i; /* Looping var */ + int retval = 0; + + /* No Args */ + if (argc == 1) { + usage(0); + exit(0); + } + + for (i = 1; i < argc && !retval; i ++) { + + if (argv[i][0] != '-') { + continue; + } + + if (!strcmp(argv[i], "-get_status")) { + if (display_printer_status()) { + retval = 1; + } + + } else if (!strcmp(argv[i], "-paper_loaded")) { + if (set_printer_status(PRINTER_PAPER_EMPTY, 1)) { + retval = 1; + } + + } else if (!strcmp(argv[i], "-paper_out")) { + if (set_printer_status(PRINTER_PAPER_EMPTY, 0)) { + retval = 1; + } + + } else if (!strcmp(argv[i], "-selected")) { + if (set_printer_status(PRINTER_SELECTED, 0)) { + retval = 1; + } + + } else if (!strcmp(argv[i], "-not_selected")) { + if (set_printer_status(PRINTER_SELECTED, 1)) { + retval = 1; + } + + } else if (!strcmp(argv[i], "-error")) { + if (set_printer_status(PRINTER_NOT_ERROR, 1)) { + retval = 1; + } + + } else if (!strcmp(argv[i], "-no_error")) { + if (set_printer_status(PRINTER_NOT_ERROR, 0)) { + retval = 1; + } + + } else if (!strcmp(argv[i], "-read_data")) { + if (read_printer_data()) { + retval = 1; + } + + } else if (!strcmp(argv[i], "-write_data")) { + if (write_printer_data()) { + retval = 1; + } + + } else if (!strcmp(argv[i], "-NB_read_data")) { + if (read_NB_printer_data()) { + retval = 1; + } + + } else { + usage(argv[i]); + retval = 1; + } + } + + exit(retval); +} -- cgit v1.2.3 From 979e524a9c563376af096d2d8629b9969fc06659 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 17 Jan 2008 10:24:38 -0800 Subject: USB: Add documentation for USB suspend statistics. This documents two newly created files: /sys/bus/usb/device/.../power/connected_duration /sys/bus/usb/device/.../power/active_duration Documentation was placed in Documentation/ABI/testing, since that's where the documentation is for the other USB sysfs power files. Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- Documentation/ABI/testing/sysfs-bus-usb | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'Documentation') diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index 9734577d1711..11a3c1682cec 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb @@ -52,3 +52,36 @@ Description: facility is inherently dangerous, it is disabled by default for all devices except hubs. For more information, see Documentation/usb/persist.txt. + +What: /sys/bus/usb/device/.../power/connected_duration +Date: January 2008 +KernelVersion: 2.6.25 +Contact: Sarah Sharp +Description: + If CONFIG_PM and CONFIG_USB_SUSPEND are enabled, then this file + is present. When read, it returns the total time (in msec) + that the USB device has been connected to the machine. This + file is read-only. +Users: + PowerTOP + http://www.lesswatts.org/projects/powertop/ + +What: /sys/bus/usb/device/.../power/active_duration +Date: January 2008 +KernelVersion: 2.6.25 +Contact: Sarah Sharp +Description: + If CONFIG_PM and CONFIG_USB_SUSPEND are enabled, then this file + is present. When read, it returns the total time (in msec) + that the USB device has been active, i.e. not in a suspended + state. This file is read-only. + + Tools can use this file and the connected_duration file to + compute the percentage of time that a device has been active. + For example, + echo $((100 * `cat active_duration` / `cat connected_duration`)) + will give an integer percentage. Note that this does not + account for counter wrap. +Users: + PowerTOP + http://www.lesswatts.org/projects/powertop/ -- cgit v1.2.3 From 782e70c6fc2290a0395850e8e02583b8b62264d8 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 25 Jan 2008 11:12:21 -0600 Subject: USB: mark USB drivers as being GPL only Over two years ago, the Linux USB developers stated that they believed there was no way to create a USB kernel driver that was not under the GPL. This patch moves the USB apis to enforce that decision. There are no known closed source USB drivers in the wild, so this patch should cause no problems. Signed-off-by: Greg Kroah-Hartman --- Documentation/feature-removal-schedule.txt | 16 ---------------- 1 file changed, 16 deletions(-) (limited to 'Documentation') diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 181bff005167..a7d9d179131a 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -156,22 +156,6 @@ Who: Arjan van de Ven --------------------------- -What: USB driver API moves to EXPORT_SYMBOL_GPL -When: February 2008 -Files: include/linux/usb.h, drivers/usb/core/driver.c -Why: The USB subsystem has changed a lot over time, and it has been - possible to create userspace USB drivers using usbfs/libusb/gadgetfs - that operate as fast as the USB bus allows. Because of this, the USB - subsystem will not be allowing closed source kernel drivers to - register with it, after this grace period is over. If anyone needs - any help in converting their closed source drivers over to use the - userspace filesystems, please contact the - linux-usb-devel@lists.sourceforge.net mailing list, and the developers - there will be glad to help you out. -Who: Greg Kroah-Hartman - ---------------------------- - What: vm_ops.nopage When: Soon, provided in-kernel callers have been converted Why: This interface is replaced by vm_ops.fault, but it has been around -- cgit v1.2.3