/* * $Id: usbkbd.c,v 1.27 2001/12/27 10:37:41 vojtech Exp $ * *  Copyright (c) 1999-2001 Vojtech Pavlik * *  USB HIDBP Keyboard support */ /* * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Should you need to contact me, the author, you can do so either by * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic */ #include <linux/kernel.h>#include <linux/slab.h>#include <linux/module.h>#include <linux/init.h>#include <linux/usb/input.h> /* * Version Information */#define DRIVER_VERSION ""#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"#define DRIVER_DESC "USB HID Boot Protocol keyboard driver"#define DRIVER_LICENSE "GPL" MODULE_AUTHOR(DRIVER_AUTHOR);MODULE_DESCRIPTION(DRIVER_DESC);MODULE_LICENSE(DRIVER_LICENSE); static unsigned char usb_kbd_keycode[256] = {	  0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,	 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,	  4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,	 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,	 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,	105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,	 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,	191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,	115,114,  0,  0,  0,121,  0, 89, 93,124, 92, 94, 95,  0,  0,  0,	122,123, 90, 91, 85,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,	 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,	150,158,159,128,136,177,178,176,142,152,173,140}; struct usb_kbd {	struct input_dev *dev;	struct usb_device *usbdev;	unsigned char old[8];	struct urb *irq, *led;	unsigned char newleds;	char name[128];	char phys[64]; 	unsigned char *new;	struct usb_ctrlrequest *cr;	unsigned char *leds;	dma_addr_t cr_dma;	dma_addr_t new_dma;	dma_addr_t leds_dma;}; static void usb_kbd_irq(struct urb *urb, struct pt_regs *regs){	struct usb_kbd *kbd = urb->context;	int i; 	switch (urb->status) {	case 0:			/* success */		break;	case -ECONNRESET:	/* unlink */	case -ENOENT:	case -ESHUTDOWN:		return;	/* -EPIPE:  should clear the halt */	default:		/* error */		goto resubmit;	} 	input_regs(kbd->dev, regs); 	for (i = 0; i < 8; i++)		input_report_key(kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1); 	for (i = 2; i < 8; i++) { 		if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {			if (usb_kbd_keycode[kbd->old[i]])				input_report_key(kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);			else				info("Unknown key (scancode %#x) released.", kbd->old[i]);		} 		if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {			if (usb_kbd_keycode[kbd->new[i]])				input_report_key(kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);			else				info("Unknown key (scancode %#x) pressed.", kbd->new[i]);		}	} 	input_sync(kbd->dev); 	memcpy(kbd->old, kbd->new, 8); resubmit:	i = usb_submit_urb (urb, SLAB_ATOMIC);	if (i)		err ("can't resubmit intr, %s-%s/input0, status %d",				kbd->usbdev->bus->bus_name,				kbd->usbdev->devpath, i);} static int usb_kbd_event(struct input_dev *dev, unsigned int type,			 unsigned int code, int value){	struct usb_kbd *kbd = dev->private; 	if (type != EV_LED)		return -1;  	kbd->newleds = (!!test_bit(LED_KANA,    dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |		       (!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL,   dev->led) << 1) |		       (!!test_bit(LED_NUML,    dev->led)); 	if (kbd->led->status == -EINPROGRESS)		return 0; 	if (*(kbd->leds) == kbd->newleds)		return 0; 	*(kbd->leds) = kbd->newleds;	kbd->led->dev = kbd->usbdev;	if (usb_submit_urb(kbd->led, GFP_ATOMIC))		err("usb_submit_urb(leds) failed"); 	return 0;} static void usb_kbd_led(struct urb *urb, struct pt_regs *regs){	struct usb_kbd *kbd = urb->context; 	if (urb->status)		warn("led urb status %d received", urb->status); 	if (*(kbd->leds) == kbd->newleds)		return; 	*(kbd->leds) = kbd->newleds;	kbd->led->dev = kbd->usbdev;	if (usb_submit_urb(kbd->led, GFP_ATOMIC))		err("usb_submit_urb(leds) failed");} static int usb_kbd_open(struct input_dev *dev){	struct usb_kbd *kbd = dev->private; 	kbd->irq->dev = kbd->usbdev;	if (usb_submit_urb(kbd->irq, GFP_KERNEL))		return -EIO; 	return 0;} static void usb_kbd_close(struct input_dev *dev){	struct usb_kbd *kbd = dev->private; 	usb_kill_urb(kbd->irq);} static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd){	if (!(kbd->irq = usb_alloc_urb(0, GFP_KERNEL)))		return -1;	if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL)))		return -1;	if (!(kbd->new = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &kbd->new_dma)))		return -1;	if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), SLAB_ATOMIC, &kbd->cr_dma)))		return -1;	if (!(kbd->leds = usb_buffer_alloc(dev, 1, SLAB_ATOMIC, &kbd->leds_dma)))		return -1; 	return 0;} static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd){	if (kbd->irq)		usb_free_urb(kbd->irq);	if (kbd->led)		usb_free_urb(kbd->led);	if (kbd->new)		usb_buffer_free(dev, 8, kbd->new, kbd->new_dma);	if (kbd->cr)		usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma);	if (kbd->leds)		usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma);} static int usb_kbd_probe(struct usb_interface *iface,			 const struct usb_device_id *id){	struct usb_device *dev = interface_to_usbdev(iface);	struct usb_host_interface *interface;	struct usb_endpoint_descriptor *endpoint;	struct usb_kbd *kbd;	struct input_dev *input_dev;	int i, pipe, maxp; 	interface = iface->cur_altsetting; 	if (interface->desc.bNumEndpoints != 1)		return -ENODEV; 	endpoint = &interface->endpoint[0].desc;	if (!(endpoint->bEndpointAddress & USB_DIR_IN))		return -ENODEV;	if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)		return -ENODEV; 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 	kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL);	input_dev = input_allocate_device();	if (!kbd || !input_dev)		goto fail1; 	if (usb_kbd_alloc_mem(dev, kbd))		goto fail2; 	kbd->usbdev = dev;	kbd->dev = input_dev; 	if (dev->manufacturer)		strlcpy(kbd->name, dev->manufacturer, sizeof(kbd->name)); 	if (dev->product) {		if (dev->manufacturer)			strlcat(kbd->name, " ", sizeof(kbd->name));		strlcat(kbd->name, dev->product, sizeof(kbd->name));	} 	if (!strlen(kbd->name))		snprintf(kbd->name, sizeof(kbd->name),			 "USB HIDBP Keyboard %04x:%04x",			 le16_to_cpu(dev->descriptor.idVendor),			 le16_to_cpu(dev->descriptor.idProduct)); 	usb_make_path(dev, kbd->phys, sizeof(kbd->phys));	strlcpy(kbd->phys, "/input0", sizeof(kbd->phys)); 	input_dev->name = kbd->name;	input_dev->phys = kbd->phys;	usb_to_input_id(dev, &input_dev->id);	input_dev->cdev.dev = &iface->dev;	input_dev->private = kbd; 	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);	input_dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL) | BIT(LED_COMPOSE) | BIT(LED_KANA); 	for (i = 0; i < 255; i++)		set_bit(usb_kbd_keycode[i], input_dev->keybit);	clear_bit(0, input_dev->keybit); 	input_dev->event = usb_kbd_event;	input_dev->open = usb_kbd_open;	input_dev->close = usb_kbd_close; 	usb_fill_int_urb(kbd->irq, dev, pipe,			 kbd->new, (maxp > 8 ? 8 : maxp),			 usb_kbd_irq, kbd, endpoint->bInterval);	kbd->irq->transfer_dma = kbd->new_dma;	kbd->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 	kbd->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE;	kbd->cr->bRequest = 0x09;	kbd->cr->wValue = cpu_to_le16(0x200);	kbd->cr->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber);	kbd->cr->wLength = cpu_to_le16(1); 	usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0),			     (void *) kbd->cr, kbd->leds, 1,			     usb_kbd_led, kbd);	kbd->led->setup_dma = kbd->cr_dma;	kbd->led->transfer_dma = kbd->leds_dma;	kbd->led->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); 	input_register_device(kbd->dev); 	usb_set_intfdata(iface, kbd);	return 0; fail2:	usb_kbd_free_mem(dev, kbd);fail1:	input_free_device(input_dev);	kfree(kbd);	return -ENOMEM;} static void usb_kbd_disconnect(struct usb_interface *intf){	struct usb_kbd *kbd = usb_get_intfdata (intf); 	usb_set_intfdata(intf, NULL);	if (kbd) {		usb_kill_urb(kbd->irq);		input_unregister_device(kbd->dev);		usb_kbd_free_mem(interface_to_usbdev(intf), kbd);		kfree(kbd);	}} static struct usb_device_id usb_kbd_id_table [] = {	{ USB_INTERFACE_INFO(3, 1, 1) },	{ }						/* Terminating entry */}; MODULE_DEVICE_TABLE (usb, usb_kbd_id_table); static struct usb_driver usb_kbd_driver = {	.name =		"usbkbd",	.probe =	usb_kbd_probe,	.disconnect =	usb_kbd_disconnect,	.id_table =	usb_kbd_id_table,}; static int __init usb_kbd_init(void){	int result = usb_register(&usb_kbd_driver);	if (result == 0)		info(DRIVER_VERSION ":" DRIVER_DESC);	return result;} static void __exit usb_kbd_exit(void){	usb_deregister(&usb_kbd_driver);} module_init(usb_kbd_init);module_exit(usb_kbd_exit);