370 lines
10 KiB
C
370 lines
10 KiB
C
/*
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* Copyright (c) 1999-2001 Vojtech Pavlik
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*
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* USB HIDBP Keyboard support
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Should you need to contact me, the author, you can do so either by
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* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
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* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/usb/input.h>
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#include <linux/hid.h>
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/*
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* Version Information
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*/
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#define DRIVER_VERSION ""
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#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
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#define DRIVER_DESC "USB HID Boot Protocol keyboard driver"
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#define DRIVER_LICENSE "GPL"
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE(DRIVER_LICENSE);
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static const unsigned char usb_kbd_keycode[256] = {
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0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
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50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
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4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
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27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
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65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
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105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
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72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
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191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
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115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0,
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122,123, 90, 91, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
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150,158,159,128,136,177,178,176,142,152,173,140
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};
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struct usb_kbd {
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struct input_dev *dev;
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struct usb_device *usbdev;
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unsigned char old[8];
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struct urb *irq, *led;
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unsigned char newleds;
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char name[128];
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char phys[64];
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unsigned char *new;
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struct usb_ctrlrequest *cr;
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unsigned char *leds;
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dma_addr_t cr_dma;
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dma_addr_t new_dma;
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dma_addr_t leds_dma;
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};
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static void usb_kbd_irq(struct urb *urb)
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{
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struct usb_kbd *kbd = urb->context;
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int i;
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switch (urb->status) {
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case 0: /* success */
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break;
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case -ECONNRESET: /* unlink */
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case -ENOENT:
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case -ESHUTDOWN:
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return;
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/* -EPIPE: should clear the halt */
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default: /* error */
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goto resubmit;
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}
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for (i = 0; i < 8; i++)
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input_report_key(kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
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for (i = 2; i < 8; i++) {
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if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {
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if (usb_kbd_keycode[kbd->old[i]])
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input_report_key(kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);
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else
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dev_info(&urb->dev->dev,
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"Unknown key (scancode %#x) released.\n", kbd->old[i]);
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}
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if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {
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if (usb_kbd_keycode[kbd->new[i]])
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input_report_key(kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);
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else
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dev_info(&urb->dev->dev,
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"Unknown key (scancode %#x) released.\n", kbd->new[i]);
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}
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}
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input_sync(kbd->dev);
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memcpy(kbd->old, kbd->new, 8);
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resubmit:
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i = usb_submit_urb (urb, GFP_ATOMIC);
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if (i)
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err_hid ("can't resubmit intr, %s-%s/input0, status %d",
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kbd->usbdev->bus->bus_name,
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kbd->usbdev->devpath, i);
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}
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static int usb_kbd_event(struct input_dev *dev, unsigned int type,
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unsigned int code, int value)
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{
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struct usb_kbd *kbd = input_get_drvdata(dev);
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if (type != EV_LED)
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return -1;
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kbd->newleds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |
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(!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) |
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(!!test_bit(LED_NUML, dev->led));
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if (kbd->led->status == -EINPROGRESS)
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return 0;
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if (*(kbd->leds) == kbd->newleds)
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return 0;
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*(kbd->leds) = kbd->newleds;
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kbd->led->dev = kbd->usbdev;
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if (usb_submit_urb(kbd->led, GFP_ATOMIC))
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err_hid("usb_submit_urb(leds) failed");
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return 0;
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}
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static void usb_kbd_led(struct urb *urb)
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{
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struct usb_kbd *kbd = urb->context;
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if (urb->status)
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dev_warn(&urb->dev->dev, "led urb status %d received\n",
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urb->status);
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if (*(kbd->leds) == kbd->newleds)
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return;
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*(kbd->leds) = kbd->newleds;
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kbd->led->dev = kbd->usbdev;
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if (usb_submit_urb(kbd->led, GFP_ATOMIC))
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err_hid("usb_submit_urb(leds) failed");
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}
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static int usb_kbd_open(struct input_dev *dev)
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{
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struct usb_kbd *kbd = input_get_drvdata(dev);
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kbd->irq->dev = kbd->usbdev;
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if (usb_submit_urb(kbd->irq, GFP_KERNEL))
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return -EIO;
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return 0;
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}
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static void usb_kbd_close(struct input_dev *dev)
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{
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struct usb_kbd *kbd = input_get_drvdata(dev);
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usb_kill_urb(kbd->irq);
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}
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static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd)
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{
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if (!(kbd->irq = usb_alloc_urb(0, GFP_KERNEL)))
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return -1;
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if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL)))
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return -1;
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if (!(kbd->new = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &kbd->new_dma)))
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return -1;
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if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), GFP_ATOMIC, &kbd->cr_dma)))
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return -1;
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if (!(kbd->leds = usb_buffer_alloc(dev, 1, GFP_ATOMIC, &kbd->leds_dma)))
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return -1;
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return 0;
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}
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static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd)
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{
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usb_free_urb(kbd->irq);
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usb_free_urb(kbd->led);
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usb_buffer_free(dev, 8, kbd->new, kbd->new_dma);
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usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma);
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usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma);
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}
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static int usb_kbd_probe(struct usb_interface *iface,
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const struct usb_device_id *id)
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{
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struct usb_device *dev = interface_to_usbdev(iface);
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struct usb_host_interface *interface;
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struct usb_endpoint_descriptor *endpoint;
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struct usb_kbd *kbd;
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struct input_dev *input_dev;
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int i, pipe, maxp;
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int error = -ENOMEM;
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interface = iface->cur_altsetting;
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if (interface->desc.bNumEndpoints != 1)
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return -ENODEV;
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endpoint = &interface->endpoint[0].desc;
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if (!usb_endpoint_is_int_in(endpoint))
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return -ENODEV;
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pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
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maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
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kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!kbd || !input_dev)
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goto fail1;
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if (usb_kbd_alloc_mem(dev, kbd))
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goto fail2;
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kbd->usbdev = dev;
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kbd->dev = input_dev;
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if (dev->manufacturer)
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strlcpy(kbd->name, dev->manufacturer, sizeof(kbd->name));
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if (dev->product) {
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if (dev->manufacturer)
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strlcat(kbd->name, " ", sizeof(kbd->name));
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strlcat(kbd->name, dev->product, sizeof(kbd->name));
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}
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if (!strlen(kbd->name))
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snprintf(kbd->name, sizeof(kbd->name),
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"USB HIDBP Keyboard %04x:%04x",
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le16_to_cpu(dev->descriptor.idVendor),
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le16_to_cpu(dev->descriptor.idProduct));
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usb_make_path(dev, kbd->phys, sizeof(kbd->phys));
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strlcpy(kbd->phys, "/input0", sizeof(kbd->phys));
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input_dev->name = kbd->name;
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input_dev->phys = kbd->phys;
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usb_to_input_id(dev, &input_dev->id);
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input_dev->dev.parent = &iface->dev;
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input_set_drvdata(input_dev, kbd);
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) |
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BIT_MASK(EV_REP);
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input_dev->ledbit[0] = BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
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BIT_MASK(LED_SCROLLL) | BIT_MASK(LED_COMPOSE) |
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BIT_MASK(LED_KANA);
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for (i = 0; i < 255; i++)
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set_bit(usb_kbd_keycode[i], input_dev->keybit);
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clear_bit(0, input_dev->keybit);
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input_dev->event = usb_kbd_event;
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input_dev->open = usb_kbd_open;
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input_dev->close = usb_kbd_close;
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usb_fill_int_urb(kbd->irq, dev, pipe,
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kbd->new, (maxp > 8 ? 8 : maxp),
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usb_kbd_irq, kbd, endpoint->bInterval);
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kbd->irq->transfer_dma = kbd->new_dma;
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kbd->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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kbd->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
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kbd->cr->bRequest = 0x09;
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kbd->cr->wValue = cpu_to_le16(0x200);
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kbd->cr->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber);
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kbd->cr->wLength = cpu_to_le16(1);
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usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0),
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(void *) kbd->cr, kbd->leds, 1,
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usb_kbd_led, kbd);
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kbd->led->setup_dma = kbd->cr_dma;
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kbd->led->transfer_dma = kbd->leds_dma;
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kbd->led->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
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error = input_register_device(kbd->dev);
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if (error)
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goto fail2;
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usb_set_intfdata(iface, kbd);
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return 0;
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fail2:
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usb_kbd_free_mem(dev, kbd);
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fail1:
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input_free_device(input_dev);
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kfree(kbd);
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return error;
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}
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static void usb_kbd_disconnect(struct usb_interface *intf)
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{
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struct usb_kbd *kbd = usb_get_intfdata (intf);
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usb_set_intfdata(intf, NULL);
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if (kbd) {
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usb_kill_urb(kbd->irq);
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input_unregister_device(kbd->dev);
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usb_kbd_free_mem(interface_to_usbdev(intf), kbd);
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kfree(kbd);
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}
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}
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static struct usb_device_id usb_kbd_id_table [] = {
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{ USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
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USB_INTERFACE_PROTOCOL_KEYBOARD) },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);
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static struct usb_driver usb_kbd_driver = {
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.name = "usbkbd",
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.probe = usb_kbd_probe,
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.disconnect = usb_kbd_disconnect,
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.id_table = usb_kbd_id_table,
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};
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static int __init usb_kbd_init(void)
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{
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int result = usb_register(&usb_kbd_driver);
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if (result == 0)
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printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
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DRIVER_DESC "\n");
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return result;
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}
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static void __exit usb_kbd_exit(void)
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{
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usb_deregister(&usb_kbd_driver);
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}
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module_init(usb_kbd_init);
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module_exit(usb_kbd_exit);
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