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path: root/drivers/hid/usbhid/usbkbd.c
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Diffstat (limited to 'drivers/hid/usbhid/usbkbd.c')
-rw-r--r--drivers/hid/usbhid/usbkbd.c369
1 files changed, 369 insertions, 0 deletions
diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
new file mode 100644
index 0000000..b342926
--- /dev/null
+++ b/drivers/hid/usbhid/usbkbd.c
@@ -0,0 +1,369 @@
+/*
+ * 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>
+#include <linux/hid.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 const 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 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;
+ }
+
+ 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
+ dev_info(&urb->dev->dev,
+ "Unknown key (scancode %#x) released.\n", 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
+ dev_info(&urb->dev->dev,
+ "Unknown key (scancode %#x) released.\n", kbd->new[i]);
+ }
+ }
+
+ input_sync(kbd->dev);
+
+ memcpy(kbd->old, kbd->new, 8);
+
+resubmit:
+ i = usb_submit_urb (urb, GFP_ATOMIC);
+ if (i)
+ err_hid ("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 = input_get_drvdata(dev);
+
+ 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_hid("usb_submit_urb(leds) failed");
+
+ return 0;
+}
+
+static void usb_kbd_led(struct urb *urb)
+{
+ struct usb_kbd *kbd = urb->context;
+
+ if (urb->status)
+ dev_warn(&urb->dev->dev, "led urb status %d received\n",
+ 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_hid("usb_submit_urb(leds) failed");
+}
+
+static int usb_kbd_open(struct input_dev *dev)
+{
+ struct usb_kbd *kbd = input_get_drvdata(dev);
+
+ 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 = input_get_drvdata(dev);
+
+ 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, GFP_ATOMIC, &kbd->new_dma)))
+ return -1;
+ if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), GFP_ATOMIC, &kbd->cr_dma)))
+ return -1;
+ if (!(kbd->leds = usb_buffer_alloc(dev, 1, GFP_ATOMIC, &kbd->leds_dma)))
+ return -1;
+
+ return 0;
+}
+
+static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd)
+{
+ usb_free_urb(kbd->irq);
+ usb_free_urb(kbd->led);
+ usb_buffer_free(dev, 8, kbd->new, kbd->new_dma);
+ usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma);
+ 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;
+ int error = -ENOMEM;
+
+ interface = iface->cur_altsetting;
+
+ if (interface->desc.bNumEndpoints != 1)
+ return -ENODEV;
+
+ endpoint = &interface->endpoint[0].desc;
+ if (!usb_endpoint_is_int_in(endpoint))
+ 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->dev.parent = &iface->dev;
+
+ input_set_drvdata(input_dev, kbd);
+
+ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) |
+ BIT_MASK(EV_REP);
+ input_dev->ledbit[0] = BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
+ BIT_MASK(LED_SCROLLL) | BIT_MASK(LED_COMPOSE) |
+ BIT_MASK(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);
+
+ error = input_register_device(kbd->dev);
+ if (error)
+ goto fail2;
+
+ usb_set_intfdata(iface, kbd);
+ return 0;
+
+fail2:
+ usb_kbd_free_mem(dev, kbd);
+fail1:
+ input_free_device(input_dev);
+ kfree(kbd);
+ return error;
+}
+
+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(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
+ USB_INTERFACE_PROTOCOL_KEYBOARD) },
+ { } /* 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)
+ printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+ DRIVER_DESC "\n");
+ return result;
+}
+
+static void __exit usb_kbd_exit(void)
+{
+ usb_deregister(&usb_kbd_driver);
+}
+
+module_init(usb_kbd_init);
+module_exit(usb_kbd_exit);
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