aboutsummaryrefslogtreecommitdiffstats
path: root/drv_G15.c
blob: 62424364806655d743cf98ed26a7ca8e674aa4a9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
/* $Id: drv_G15.c,v 1.5 2006/02/08 04:55:03 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 1.5  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_gray(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: 1.5 $");

    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,
};