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archived-lcd4linux/drv_G15.c
reinelt 99aac994aa [lcd4linux @ 2006-02-27 06:14:46 by reinelt] 
graphic bug resulting in all black pixels solved

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@648 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
2006-02-27 06:14:46 +00:00

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/* $Id: drv_G15.c,v 1.6 2006/02/27 06:14:46 reinelt Exp $
*
* Driver for Logitech G-15 keyboard LCD screen
*
* Copyright (C) 2006 Dave Ingram <dave@partis-project.net>
* Copyright (C) 2005 Michael Reinelt <reinelt@eunet.at>
* Copyright (C) 2005 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux 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, or (at your option)
* any later version.
*
* LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* $Log: drv_G15.c,v $
* Revision 1.6 2006/02/27 06:14:46 reinelt
* graphic bug resulting in all black pixels solved
*
* Revision 1.5 2006/02/08 04:55:03 reinelt
* moved widget registration to drv_generic_graphic
*
* Revision 1.4 2006/01/30 06:25:49 reinelt
* added CVS Revision
*
* Revision 1.3 2006/01/30 05:47:38 reinelt
* graphic subsystem changed to full-color RGBA
*
* Revision 1.2 2006/01/21 17:43:25 reinelt
* minor cosmetic fixes
*
* Revision 1.1 2006/01/21 13:26:44 reinelt
* Logitech G-15 keyboard LCD driver from Dave Ingram
*
*/
/*
*
* exported fuctions:
*
* struct DRIVER drv_G15
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <usb.h>
#include "debug.h"
#include "cfg.h"
#include "qprintf.h"
#include "udelay.h"
#include "plugin.h"
#include "drv.h"
#include "drv_generic_graphic.h"
#define G15_VENDOR 0x046d
#define G15_DEVICE 0xc222
#if 0
#define DEBUG(x) debug("%s(): %s", __FUNCTION__, x);
#else
#define DEBUG(x)
#endif
static char Name[] = "G-15";
static usb_dev_handle *g15_lcd;
static unsigned char *g15_image;
/****************************************/
/*** hardware dependant functions ***/
/****************************************/
static int drv_G15_open()
{
struct usb_bus *bus;
struct usb_device *dev;
char dname[32] = { 0 };
g15_lcd = NULL;
info("%s: Scanning USB for G-15 keyboard...", Name);
usb_init();
usb_set_debug(0);
usb_find_busses();
usb_find_devices();
for (bus = usb_get_busses(); bus; bus = bus->next) {
for (dev = bus->devices; dev; dev = dev->next) {
if ((g15_lcd = usb_open(dev))) {
if ((dev->descriptor.idVendor == G15_VENDOR) && (dev->descriptor.idProduct == G15_DEVICE)) {
/* detach from the kernel if we need to */
int retval = usb_get_driver_np(g15_lcd, 0, dname, 31);
if (retval == 0 && strcmp(dname, "usbhid") == 0) {
usb_detach_kernel_driver_np(g15_lcd, 0);
}
usb_set_configuration(g15_lcd, 1);
usleep(100);
usb_claim_interface(g15_lcd, 0);
return 0;
} else {
usb_close(g15_lcd);
}
}
}
}
return -1;
}
static int drv_G15_close(void)
{
usb_release_interface(g15_lcd, 0);
if (g15_lcd)
usb_close(g15_lcd);
return 0;
}
static void drv_G15_update_img()
{
int i, j, k;
unsigned char *output = malloc(160 * 43 * sizeof(unsigned char));
DEBUG("entered");
if (!output)
return;
DEBUG("memory allocated");
memset(output, 0, 160 * 43);
DEBUG("memory set");
output[0] = 0x03;
DEBUG("first output set");
for (k = 0; k < 6; k++) {
for (i = 0; i < 160; i++) {
int maxj = (k == 5) ? 3 : 8;
for (j = 0; j < maxj; j++) {
if (g15_image[(k * 1280) + i + (j * 160)])
output[32 + i + (k * 160)] |= (1 << j);
}
}
}
DEBUG("output array prepared");
usb_bulk_write(g15_lcd, 0x02, (char *) output, 992, 1000);
usleep(300);
DEBUG("data written to LCD");
free(output);
DEBUG("memory freed");
DEBUG("left");
}
/* for graphic displays only */
static void drv_G15_blit(const int row, const int col, const int height, const int width)
{
int r, c;
DEBUG("entered");
for (r = row; r < row + height; r++) {
for (c = col; c < col + width; c++) {
g15_image[r * 160 + c] = drv_generic_graphic_black(r, c);
}
}
DEBUG("updating image");
drv_G15_update_img();
DEBUG("left");
}
/* start graphic display */
static int drv_G15_start(const char *section)
{
char *s;
DEBUG("entered");
/* read display size from config */
DROWS = 160;
DCOLS = 43;
DEBUG("display size set");
s = cfg_get(section, "Font", "6x8");
if (s == NULL || *s == '\0') {
error("%s: no '%s.Font' entry from %s", Name, section, cfg_source());
return -1;
}
XRES = -1;
YRES = -1;
if (sscanf(s, "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) {
error("%s: bad Font '%s' from %s", Name, s, cfg_source());
return -1;
}
/* Fixme: provider other fonts someday... */
if (XRES != 6 && YRES != 8) {
error("%s: bad Font '%s' from %s (only 6x8 at the moment)", Name, s, cfg_source());
return -1;
}
DEBUG("Finished config stuff");
DEBUG("allocating image buffer");
/* you surely want to allocate a framebuffer or something... */
g15_image = malloc(160 * 43 * sizeof(unsigned char));
if (!g15_image)
return -1;
DEBUG("allocated");
memset(g15_image, 0, 160 * 43);
DEBUG("zeroed");
/* open communication with the display */
DEBUG("opening display...");
if (drv_G15_open() < 0) {
DEBUG("opening failed");
return -1;
}
DEBUG("display open");
/* reset & initialize display */
DEBUG("clearing display");
drv_G15_update_img();
DEBUG("done");
/*
if (cfg_number(section, "Contrast", 0, 0, 255, &contrast) > 0) {
drv_G15_contrast(contrast);
}
*/
DEBUG("left");
return 0;
}
/****************************************/
/*** plugins ***/
/****************************************/
/* none */
/****************************************/
/*** exported functions ***/
/****************************************/
/* list models */
int drv_G15_list(void)
{
printf("generic");
return 0;
}
/* initialize driver & display */
int drv_G15_init(const char *section, const int quiet)
{
int ret;
info("%s: %s", Name, "$Revision: 1.6 $");
DEBUG("entered");
/* real worker functions */
drv_generic_graphic_real_blit = drv_G15_blit;
/* start display */
if ((ret = drv_G15_start(section)) != 0)
return ret;
/* initialize generic graphic driver */
if ((ret = drv_generic_graphic_init(section, Name)) != 0)
return ret;
if (!quiet) {
char buffer[40];
qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
if (drv_generic_graphic_greet(buffer, NULL)) {
sleep(3);
drv_generic_graphic_clear();
}
}
/* register plugins */
/* none at the moment... */
DEBUG("left");
return 0;
}
/* close driver & display */
int drv_G15_quit(const int quiet)
{
info("%s: shutting down.", Name);
DEBUG("clearing display");
/* clear display */
drv_generic_graphic_clear();
DEBUG("saying goodbye");
/* say goodbye... */
if (!quiet) {
drv_generic_graphic_greet("goodbye!", NULL);
}
DEBUG("generic_graphic_quit()");
drv_generic_graphic_quit();
DEBUG("closing connection");
drv_G15_close();
DEBUG("freeing image alloc");
free(g15_image);
return (0);
}
DRIVER drv_G15 = {
name:Name,
list:drv_G15_list,
init:drv_G15_init,
quit:drv_G15_quit,
};
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