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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 22:20:36 (GMT)
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 22:20:36 (GMT)
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/usb/input/usbkbd.c
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/usb/input/usbkbd.c')
-rw-r--r--drivers/usb/input/usbkbd.c370
1 files changed, 370 insertions, 0 deletions
diff --git a/drivers/usb/input/usbkbd.c b/drivers/usb/input/usbkbd.c
new file mode 100644
index 0000000..01514b0
--- /dev/null
+++ b/drivers/usb/input/usbkbd.c
@@ -0,0 +1,370 @@
+/*
+ * $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/input.h>
+#include <linux/init.h>
+#include <linux/usb.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];
+ int open;
+
+ 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);
+}
+
+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;
+
+ if (kbd->open++)
+ return 0;
+
+ kbd->irq->dev = kbd->usbdev;
+ if (usb_submit_urb(kbd->irq, GFP_KERNEL)) {
+ kbd->open--;
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static void usb_kbd_close(struct input_dev *dev)
+{
+ struct usb_kbd *kbd = dev->private;
+
+ if (!--kbd->open)
+ 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;
+ int i, pipe, maxp;
+ char path[64];
+
+ interface = iface->cur_altsetting;
+
+ if (interface->desc.bNumEndpoints != 1)
+ return -ENODEV;
+
+ endpoint = &interface->endpoint[0].desc;
+ if (!(endpoint->bEndpointAddress & 0x80))
+ return -ENODEV;
+ if ((endpoint->bmAttributes & 3) != 3)
+ return -ENODEV;
+
+ pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
+ maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+
+ if (!(kbd = kmalloc(sizeof(struct usb_kbd), GFP_KERNEL)))
+ return -ENOMEM;
+ memset(kbd, 0, sizeof(struct usb_kbd));
+
+ if (usb_kbd_alloc_mem(dev, kbd)) {
+ usb_kbd_free_mem(dev, kbd);
+ kfree(kbd);
+ return -ENOMEM;
+ }
+
+ kbd->usbdev = dev;
+
+ kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
+ kbd->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], kbd->dev.keybit);
+ clear_bit(0, kbd->dev.keybit);
+
+ kbd->dev.private = kbd;
+ kbd->dev.event = usb_kbd_event;
+ kbd->dev.open = usb_kbd_open;
+ kbd->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_make_path(dev, path, 64);
+ sprintf(kbd->phys, "%s/input0", path);
+
+ kbd->dev.name = kbd->name;
+ kbd->dev.phys = kbd->phys;
+ kbd->dev.id.bustype = BUS_USB;
+ kbd->dev.id.vendor = le16_to_cpu(dev->descriptor.idVendor);
+ kbd->dev.id.product = le16_to_cpu(dev->descriptor.idProduct);
+ kbd->dev.id.version = le16_to_cpu(dev->descriptor.bcdDevice);
+ kbd->dev.dev = &iface->dev;
+
+ if (dev->manufacturer)
+ strcat(kbd->name, dev->manufacturer);
+ if (dev->product)
+ sprintf(kbd->name, "%s %s", kbd->name, dev->product);
+
+ if (!strlen(kbd->name))
+ sprintf(kbd->name, "USB HIDBP Keyboard %04x:%04x",
+ kbd->dev.id.vendor, kbd->dev.id.product);
+
+ 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);
+
+ printk(KERN_INFO "input: %s on %s\n", kbd->name, path);
+
+ usb_set_intfdata(iface, kbd);
+ return 0;
+}
+
+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 = {
+ .owner = THIS_MODULE,
+ .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);