diff options
Diffstat (limited to 'drivers/usb/usb_kbd.c')
| -rw-r--r-- | drivers/usb/usb_kbd.c | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/drivers/usb/usb_kbd.c b/drivers/usb/usb_kbd.c deleted file mode 100644 index 5d396e32bc..0000000000 --- a/drivers/usb/usb_kbd.c +++ /dev/null @@ -1,359 +0,0 @@ -/* - * (C) Copyright 2001 - * Denis Peter, MPL AG Switzerland - * - * Part of this source has been derived from the Linux USB - * project. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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 - * - */ -#include <common.h> -#include <devices.h> - -#ifdef CONFIG_USB_KEYBOARD - -#include <usb.h> - -#undef USB_KBD_DEBUG -/* - * if overwrite_console returns 1, the stdin, stderr and stdout - * are switched to the serial port, else the settings in the - * environment are used - */ -#ifdef CFG_CONSOLE_OVERWRITE_ROUTINE -extern int overwrite_console (void); -#else -int overwrite_console (void) -{ - return (0); -} -#endif - -#ifdef USB_KBD_DEBUG -#define USB_KBD_PRINTF(fmt,args...) printf (fmt ,##args) -#else -#define USB_KBD_PRINTF(fmt,args...) -#endif - - -#define REPEAT_RATE 40/4 /* 40msec -> 25cps */ -#define REPEAT_DELAY 10 /* 10 x REAPEAT_RATE = 400msec */ - -#define NUM_LOCK 0x53 -#define CAPS_LOCK 0x39 -#define SCROLL_LOCK 0x47 - - -/* Modifier bits */ -#define LEFT_CNTR 0 -#define LEFT_SHIFT 1 -#define LEFT_ALT 2 -#define LEFT_GUI 3 -#define RIGHT_CNTR 4 -#define RIGHT_SHIFT 5 -#define RIGHT_ALT 6 -#define RIGHT_GUI 7 - -#define USB_KBD_BUFFER_LEN 0x20 /* size of the keyboardbuffer */ - -static volatile char usb_kbd_buffer[USB_KBD_BUFFER_LEN]; -static volatile int usb_in_pointer = 0; -static volatile int usb_out_pointer = 0; - -unsigned char new[8]; -unsigned char old[8]; -int repeat_delay; -#define DEVNAME "usbkbd" -static unsigned char num_lock = 0; -static unsigned char caps_lock = 0; -static unsigned char scroll_lock = 0; - -static unsigned char leds __attribute__ ((aligned (0x4))); - -static unsigned char usb_kbd_numkey[] = { - '1', '2', '3', '4', '5', '6', '7', '8', '9', '0','\r',0x1b,'\b','\t',' ', '-', - '=', '[', ']','\\', '#', ';', '\'', '`', ',', '.', '/' -}; -static unsigned char usb_kbd_numkey_shifted[] = { - '!', '@', '#', '$', '%', '^', '&', '*', '(', ')','\r',0x1b,'\b','\t',' ', '_', - '+', '{', '}', '|', '~', ':', '"', '~', '<', '>', '?' -}; - -/****************************************************************** - * Queue handling - ******************************************************************/ -/* puts character in the queue and sets up the in and out pointer */ -static void usb_kbd_put_queue(char data) -{ - if((usb_in_pointer+1)==USB_KBD_BUFFER_LEN) { - if(usb_out_pointer==0) { - return; /* buffer full */ - } else{ - usb_in_pointer=0; - } - } else { - if((usb_in_pointer+1)==usb_out_pointer) - return; /* buffer full */ - usb_in_pointer++; - } - usb_kbd_buffer[usb_in_pointer]=data; - return; -} - -/* test if a character is in the queue */ -static int usb_kbd_testc(void) -{ - if(usb_in_pointer==usb_out_pointer) - return(0); /* no data */ - else - return(1); -} -/* gets the character from the queue */ -static int usb_kbd_getc(void) -{ - char c; - while(usb_in_pointer==usb_out_pointer); - if((usb_out_pointer+1)==USB_KBD_BUFFER_LEN) - usb_out_pointer=0; - else - usb_out_pointer++; - c=usb_kbd_buffer[usb_out_pointer]; - return (int)c; - -} - -/* forward decleration */ -static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum); - -/* search for keyboard and register it if found */ -int drv_usb_kbd_init(void) -{ - int error,i,index; - device_t usb_kbd_dev,*old_dev; - struct usb_device *dev; - char *stdinname = getenv ("stdin"); - - usb_in_pointer=0; - usb_out_pointer=0; - /* scan all USB Devices */ - for(i=0;i<USB_MAX_DEVICE;i++) { - dev=usb_get_dev_index(i); /* get device */ - if(dev->devnum!=-1) { - if(usb_kbd_probe(dev,0)==1) { /* Ok, we found a keyboard */ - /* check, if it is already registered */ - USB_KBD_PRINTF("USB KBD found set up device.\n"); - for (index=1; index<=ListNumItems(devlist); index++) { - old_dev = ListGetPtrToItem(devlist, index); - if(strcmp(old_dev->name,DEVNAME)==0) { - /* ok, already registered, just return ok */ - USB_KBD_PRINTF("USB KBD is already registered.\n"); - return 1; - } - } - /* register the keyboard */ - USB_KBD_PRINTF("USB KBD register.\n"); - memset (&usb_kbd_dev, 0, sizeof(device_t)); - strcpy(usb_kbd_dev.name, DEVNAME); - usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; - usb_kbd_dev.putc = NULL; - usb_kbd_dev.puts = NULL; - usb_kbd_dev.getc = usb_kbd_getc; - usb_kbd_dev.tstc = usb_kbd_testc; - error = device_register (&usb_kbd_dev); - if(error==0) { - /* check if this is the standard input device */ - if(strcmp(stdinname,DEVNAME)==0) { - /* reassign the console */ - if(overwrite_console()) { - return 1; - } - error=console_assign(stdin,DEVNAME); - if(error==0) - return 1; - else - return error; - } - return 1; - } - return error; - } - } - } - /* no USB Keyboard found */ - return -1; -} - - -/* deregistering the keyboard */ -int usb_kbd_deregister(void) -{ - return device_deregister(DEVNAME); -} - -/************************************************************************** - * Low Level drivers - */ - -/* set the LEDs. Since this is used in the irq routine, the control job - is issued with a timeout of 0. This means, that the job is queued without - waiting for job completion */ - -static void usb_kbd_setled(struct usb_device *dev) -{ - struct usb_interface_descriptor *iface; - iface = &dev->config.if_desc[0]; - leds=0; - if(scroll_lock!=0) - leds|=1; - leds<<=1; - if(caps_lock!=0) - leds|=1; - leds<<=1; - if(num_lock!=0) - leds|=1; - usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE, - 0x200, iface->bInterfaceNumber,(void *)&leds, 1, 0); - -} - - -#define CAPITAL_MASK 0x20 -/* Translate the scancode in ASCII */ -static int usb_kbd_translate(unsigned char scancode,unsigned char modifier,int pressed) -{ - unsigned char keycode; - - if(pressed==0) { - /* key released */ - repeat_delay=0; - return 0; - } - if(pressed==2) { - repeat_delay++; - if(repeat_delay<REPEAT_DELAY) - return 0; - repeat_delay=REPEAT_DELAY; - } - keycode=0; - if((scancode>3) && (scancode<0x1d)) { /* alpha numeric values */ - keycode=scancode-4 + 0x61; - if(caps_lock) - keycode&=~CAPITAL_MASK; /* switch to capital Letters */ - if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) { - if(keycode & CAPITAL_MASK) - keycode&=~CAPITAL_MASK; /* switch to capital Letters */ - else - keycode|=CAPITAL_MASK; /* switch to non capital Letters */ - } - } - if((scancode>0x1d) && (scancode<0x3A)) { - if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) /* shifted */ - keycode=usb_kbd_numkey_shifted[scancode-0x1e]; - else /* non shifted */ - keycode=usb_kbd_numkey[scancode-0x1e]; - } - if(pressed==1) { - if(scancode==NUM_LOCK) { - num_lock=~num_lock; - return 1; - } - if(scancode==CAPS_LOCK) { - caps_lock=~caps_lock; - return 1; - } - if(scancode==SCROLL_LOCK) { - scroll_lock=~scroll_lock; - return 1; - } - } - if(keycode!=0) { - USB_KBD_PRINTF("%c",keycode); - usb_kbd_put_queue(keycode); - } - return 0; -} - -/* Interrupt service routine */ -static int usb_kbd_irq(struct usb_device *dev) -{ - int i,res; - - if((dev->irq_status!=0)||(dev->irq_act_len!=8)) - { - USB_KBD_PRINTF("usb_keyboard Error %lX, len %d\n",dev->irq_status,dev->irq_act_len); - return 1; - } - res=0; - for (i = 2; i < 8; i++) { - if (old[i] > 3 && memscan(&new[2], old[i], 6) == &new[8]) { - res|=usb_kbd_translate(old[i],new[0],0); - } - if (new[i] > 3 && memscan(&old[2], new[i], 6) == &old[8]) { - res|=usb_kbd_translate(new[i],new[0],1); - } - } - if((new[2]>3) && (old[2]==new[2])) /* still pressed */ - res|=usb_kbd_translate(new[2],new[0],2); - if(res==1) - usb_kbd_setled(dev); - memcpy(&old[0],&new[0], 8); - return 1; /* install IRQ Handler again */ -} - -/* probes the USB device dev for keyboard type */ -static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum) -{ - struct usb_interface_descriptor *iface; - struct usb_endpoint_descriptor *ep; - int pipe,maxp; - - if (dev->descriptor.bNumConfigurations != 1) return 0; - iface = &dev->config.if_desc[ifnum]; - - if (iface->bInterfaceClass != 3) return 0; - if (iface->bInterfaceSubClass != 1) return 0; - if (iface->bInterfaceProtocol != 1) return 0; - if (iface->bNumEndpoints != 1) return 0; - - ep = &iface->ep_desc[0]; - - if (!(ep->bEndpointAddress & 0x80)) return 0; - if ((ep->bmAttributes & 3) != 3) return 0; - USB_KBD_PRINTF("USB KBD found set protocol...\n"); - /* ok, we found a USB Keyboard, install it */ - /* usb_kbd_get_hid_desc(dev); */ - usb_set_protocol(dev, iface->bInterfaceNumber, 0); - USB_KBD_PRINTF("USB KBD found set idle...\n"); - usb_set_idle(dev, iface->bInterfaceNumber, REPEAT_RATE, 0); - memset(&new[0], 0, 8); - memset(&old[0], 0, 8); - repeat_delay=0; - pipe = usb_rcvintpipe(dev, ep->bEndpointAddress); - maxp = usb_maxpacket(dev, pipe); - dev->irq_handle=usb_kbd_irq; - USB_KBD_PRINTF("USB KBD enable interrupt pipe...\n"); - usb_submit_int_msg(dev,pipe,&new[0], maxp > 8 ? 8 : maxp,ep->bInterval); - return 1; -} - - - -#endif /* CONFIG_USB_KEYBOARD */ |