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perixx1800keyboard/perixxkbd.c

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/*
* Copyright (c) 2013 Colin Svingen
* Copyright (c) 2016 Christoph Haas
*
* Perixx PX-1800 USB Keyboard support
*
* Original work: https://bitbucket.org/Swoogan/aziokbd
*/
/*
* 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 by email.
* Mail your message to Christoph Haas <christoph.h@sprinternet.at>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#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 "Christoph Haas <christoph.h@sprinternet.at>"
#define DRIVER_DESC "Perixx PX-1800 Keyboard Driver"
#define DRIVER_LICENSE "GPL"
#define ML_VENDOR_ID 0x0c45
#define ML_PRODUCT_ID 0x7603
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);
/**
* Define keycodes
*/
static const unsigned char px_kbd_keycode[256] = {
/* BEGIN 04 */
/* 0-7 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 8-15 */ KEY_LEFTCTRL, KEY_LEFTSHIFT, KEY_LEFTALT, KEY_LEFTMETA, KEY_RIGHTCTRL, KEY_RIGHTSHIFT, KEY_RIGHTALT, KEY_RESERVED,
/* 16-23 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_A, KEY_B, KEY_C, KEY_D,
/* 24-31 */ KEY_E, KEY_F, KEY_G, KEY_H, KEY_I, KEY_J, KEY_K, KEY_L,
/* 32-39 */ KEY_M, KEY_N, KEY_O, KEY_P, KEY_Q, KEY_R, KEY_S, KEY_T,
/* 40-47 */ KEY_U, KEY_V, KEY_W, KEY_X, KEY_Y, KEY_Z, KEY_1, KEY_2,
/* 48-55 */ KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, KEY_0,
/* 56-63 */ KEY_ENTER, KEY_ESC, KEY_BACKSPACE, KEY_TAB, KEY_SPACE, KEY_MINUS, KEY_EQUAL, KEY_LEFTBRACE,
/* END 04 */
/* BEGIN 05 */
/* 64-71 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 72-79 */ KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_BACKSLASH, KEY_SEMICOLON, KEY_APOSTROPHE, KEY_GRAVE, KEY_COMMA, KEY_DOT,
/* 80-87 */ KEY_SLASH, KEY_CAPSLOCK, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6,
/* 88-95 */ KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, KEY_SYSRQ, KEY_SCROLLLOCK,
/* 96-103 */ KEY_PAUSE, KEY_INSERT, KEY_HOME, KEY_PAGEUP, KEY_DELETE, KEY_END, KEY_PAGEDOWN, KEY_RIGHT,
/* 104-111 */ KEY_LEFT, KEY_DOWN, KEY_UP, KEY_NUMLOCK, KEY_KPSLASH, KEY_KPASTERISK, KEY_KPMINUS, KEY_KPPLUS,
/* 112-119 */ KEY_KPENTER, KEY_KP1, KEY_KP2, KEY_KP3, KEY_KP4, KEY_KP5, KEY_KP6, KEY_KP7,
/* 120-127 */ KEY_KP8, KEY_KP9, KEY_KP0, KEY_KPDOT, KEY_102ND, KEY_MENU, KEY_RESERVED, KEY_RESERVED,
/* END 05 */
/* 01 */
/* 128-135 */ KEY_VOLUMEDOWN, KEY_VOLUMEUP, KEY_MEDIA, KEY_MUTE, KEY_PAUSE, KEY_PREVIOUSSONG, KEY_PLAYPAUSE, KEY_NEXTSONG,
/* 136-143 */ KEY_MAIL, KEY_HOMEPAGE, KEY_CALC, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 144-151 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 152-159 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 160-167 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 168-175 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 176-183 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 184-191 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* BEGIN 06 */
/* 192-199 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 200-207 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 208-215 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 216-223 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 224-231 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_SLASH,
/* 232-239 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 240-247 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* 248-255 */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
/* END 06 */
};
/**
* struct usb_kbd - state of each attached keyboard
*
* @dev: input device associated with this keyboard
* @usbdev: usb device associated with this keyboard
* @old: data received in the past from the @irq URB representing which
* keys were pressed. By comparing with the current list of keys
* that are pressed, we are able to see key releases.
* @irq: URB for receiving a list of keys that are pressed when a
* new key is pressed or a key that was pressed is released.
* @led: URB for sending LEDs (e.g. numlock, ...)
* @newleds: data that will be sent with the @led URB representing which LEDs
* should be on
* @name: Name of the keyboard. @dev's name field points to this buffer
* @phys: Physical path of the keyboard. @dev's phys field points to this
* buffer
* @new: Buffer for the @irq URB
* @cr: Control request for @led URB
* @leds: Buffer for the @led URB
* @new_dma: DMA address for @irq URB
* @leds_dma: DMA address for @led URB
* @leds_lock: spinlock that protects @leds, @newleds, and @led_urb_submitted
* @led_urb_submitted: indicates whether @led is in progress, i.e. it has been
* submitted and its completion handler has not returned yet
* without resubmitting @led
*/
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 new_dma;
dma_addr_t leds_dma;
};
static void usb_kbd_irq(struct urb *urb)
{
struct usb_kbd *kbd = urb->context;
int i, j, offset;
switch (urb->status) {
case 0: /* success */
break;
case -ECONNRESET: /* unlink */
case -ENOENT:
case -ESHUTDOWN:
return;
/* -EPIPE: should clear the halt */
default: /* error */
goto resubmit;
}
/*
printk("Keyup keycode: ");
for (i = 0; i < 8; i++)
printk("%d ", kbd->old[i]);
printk("\n");
*/
/*
// The following lines are for logging keypresses to the
// kernel dmesg facility. Uncomment the following lines
// to capture the keycode for any non-functioning keys
// and open a new issue on bitbucket.org with the key
// you pressed and the keycode output below.
printk("Keydown keycode: ");
for (i = 0; i < 8; i++)
printk("%d ", kbd->new[i]);
printk("\n");
*/
if (kbd->new[0] == 1) {
// volume down
if (kbd->new[1] == 234 && kbd->old[1] != 234)
input_report_key(kbd->dev, px_kbd_keycode[128], 1);
if (kbd->old[1] == 234 && kbd->new[1] != 234)
input_report_key(kbd->dev, px_kbd_keycode[128], 0);
// volume up
if (kbd->new[1] == 233 && kbd->old[1] != 233)
input_report_key(kbd->dev, px_kbd_keycode[129], 1);
if (kbd->old[1] == 233 && kbd->new[1] != 233)
input_report_key(kbd->dev, px_kbd_keycode[129], 0);
// Media
if (kbd->new[1] == 131 && kbd->old[1] != 131)
input_report_key(kbd->dev, px_kbd_keycode[130], 1);
if (kbd->old[1] == 131 && kbd->new[1] != 131)
input_report_key(kbd->dev, px_kbd_keycode[130], 0);
// Mute
if (kbd->new[1] == 226 && kbd->old[1] != 226)
input_report_key(kbd->dev, px_kbd_keycode[131], 1);
if (kbd->old[1] == 226 && kbd->new[1] != 226)
input_report_key(kbd->dev, px_kbd_keycode[131], 0);
// Stop
if (kbd->new[1] == 183 && kbd->old[1] != 183)
input_report_key(kbd->dev, px_kbd_keycode[132], 1);
if (kbd->old[1] == 183 && kbd->new[1] != 183)
input_report_key(kbd->dev, px_kbd_keycode[132], 0);
// Prev Song
if (kbd->new[1] == 182 && kbd->old[1] != 182)
input_report_key(kbd->dev, px_kbd_keycode[133], 1);
if (kbd->old[1] == 182 && kbd->new[1] != 182)
input_report_key(kbd->dev, px_kbd_keycode[133], 0);
// Play/Pause
if (kbd->new[1] == 205 && kbd->old[1] != 205)
input_report_key(kbd->dev, px_kbd_keycode[134], 1);
if (kbd->old[1] == 205 && kbd->new[1] != 205)
input_report_key(kbd->dev, px_kbd_keycode[134], 0);
// Next Song
if (kbd->new[1] == 181 && kbd->old[1] != 181)
input_report_key(kbd->dev, px_kbd_keycode[135], 1);
if (kbd->old[1] == 181 && kbd->new[1] != 181)
input_report_key(kbd->dev, px_kbd_keycode[135], 0);
// Mail
if (kbd->new[1] == 138 && kbd->old[1] != 138)
input_report_key(kbd->dev, px_kbd_keycode[136], 1);
if (kbd->old[1] == 138 && kbd->new[1] != 138)
input_report_key(kbd->dev, px_kbd_keycode[136], 0);
// Homepage
if (kbd->new[1] == 35 && kbd->old[1] != 35)
input_report_key(kbd->dev, px_kbd_keycode[137], 1);
if (kbd->old[1] == 35 && kbd->new[1] != 35)
input_report_key(kbd->dev, px_kbd_keycode[137], 0);
// Calc
if (kbd->new[1] == 146 && kbd->old[1] != 146)
input_report_key(kbd->dev, px_kbd_keycode[138], 1);
if (kbd->old[1] == 146 && kbd->new[1] != 146)
input_report_key(kbd->dev, px_kbd_keycode[138], 0);
} else if (kbd->new[0] == 4) {
for (j = 1; j < 8; j++) {
offset = j * 8;
for (i = 0; i < 8; i++)
input_report_key(kbd->dev, px_kbd_keycode[offset + i], (kbd->new[j] >> i) & 1);
}
} else if (kbd->new[0] == 5) {
for (j = 1; j < 8; j++) {
offset = (j * 8) + 64;
for (i = 0; i < 8; i++)
input_report_key(kbd->dev, px_kbd_keycode[offset + i], (kbd->new[j] >> i) & 1);
}
} else if (kbd->new[0] == 6) {
for (j = 1; j < 8; j++) {
offset = (j * 8) + 192;
for (i = 0; i < 8; i++)
input_report_key(kbd->dev, px_kbd_keycode[offset + i], (kbd->new[j] >> i) & 1);
}
}
input_sync(kbd->dev);
memcpy(kbd->old, kbd->new, 8);
resubmit:
i = usb_submit_urb (urb, GFP_ATOMIC);
if (i)
hid_err(urb->dev, "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))
pr_err("usb_submit_urb(leds) failed\n");
return 0;
}
static void usb_kbd_led(struct urb *urb)
{
struct usb_kbd *kbd = urb->context;
if (urb->status)
hid_warn(urb->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))
hid_err(urb->dev, "usb_submit_urb(leds) failed\n");
}
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_alloc_coherent(dev, 8, GFP_ATOMIC, &kbd->new_dma)))
return -1;
if (!(kbd->cr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL)))
return -1;
if (!(kbd->leds = usb_alloc_coherent(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_free_coherent(dev, 8, kbd->new, kbd->new_dma);
kfree(kbd->cr);
usb_free_coherent(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));
printk("<1>perixxkbd: detected %s\n", kbd->name);
usb_make_path(dev, kbd->phys, sizeof(kbd->phys));
strlcat(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(px_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->wIndex = cpu_to_le16(0);
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->transfer_dma = kbd->leds_dma;
kbd->led->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
error = input_register_device(kbd->dev);
if (error)
goto fail2;
usb_set_intfdata(iface, kbd);
device_set_wakeup_enable(&dev->dev, 1);
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_DEVICE(ML_VENDOR_ID, ML_PRODUCT_ID) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);
static struct usb_driver usb_kbd_driver = {
.name = "perixxkbd",
.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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