summaryrefslogtreecommitdiff
path: root/board/freescale/common/fsl_diu_fb.c
blob: 4d4b0a1460ff7f64e98c3dc5f98db56f95e47c45 (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
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
/*
 * Copyright 2007 Freescale Semiconductor, Inc.
 * York Sun <yorksun@freescale.com>
 *
 * FSL DIU Framebuffer driver
 *
 * 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 <i2c.h>
#include <malloc.h>

#include "fsl_diu_fb.h"

struct fb_videomode {
	const char *name;	/* optional */
	unsigned int refresh;		/* optional */
	unsigned int xres;
	unsigned int yres;
	unsigned int pixclock;
	unsigned int left_margin;
	unsigned int right_margin;
	unsigned int upper_margin;
	unsigned int lower_margin;
	unsigned int hsync_len;
	unsigned int vsync_len;
	unsigned int sync;
	unsigned int vmode;
	unsigned int flag;
};

#define FB_SYNC_VERT_HIGH_ACT	2	/* vertical sync high active	*/
#define FB_SYNC_COMP_HIGH_ACT	8	/* composite sync high active   */
#define FB_VMODE_NONINTERLACED  0	/* non interlaced */

/*
 * These parameters give default parameters
 * for video output 1024x768,
 * FIXME - change timing to proper amounts
 * hsync 31.5kHz, vsync 60Hz
 */
static struct fb_videomode fsl_diu_mode_1024 = {
	.refresh	= 60,
	.xres		= 1024,
	.yres		= 768,
	.pixclock	= 15385,
	.left_margin	= 160,
	.right_margin	= 24,
	.upper_margin	= 29,
	.lower_margin	= 3,
	.hsync_len	= 136,
	.vsync_len	= 6,
	.sync		= FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
	.vmode		= FB_VMODE_NONINTERLACED
};

static struct fb_videomode fsl_diu_mode_1280 = {
	.name		= "1280x1024-60",
	.refresh	= 60,
	.xres		= 1280,
	.yres		= 1024,
	.pixclock	= 9375,
	.left_margin	= 38,
	.right_margin	= 128,
	.upper_margin	= 2,
	.lower_margin	= 7,
	.hsync_len	= 216,
	.vsync_len	= 37,
	.sync		= FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
	.vmode		= FB_VMODE_NONINTERLACED
};

/*
 * These are the fields of area descriptor(in DDR memory) for every plane
 */
struct diu_ad {
	/* Word 0(32-bit) in DDR memory */
	unsigned int pix_fmt; /* hard coding pixel format */
	/* Word 1(32-bit) in DDR memory */
	unsigned int addr;
	/* Word 2(32-bit) in DDR memory */
	unsigned int src_size_g_alpha;
	/* Word 3(32-bit) in DDR memory */
	unsigned int aoi_size;
	/* Word 4(32-bit) in DDR memory */
	unsigned int offset_xyi;
	/* Word 5(32-bit) in DDR memory */
	unsigned int offset_xyd;
	/* Word 6(32-bit) in DDR memory */
	unsigned int ckmax_r:8;
	unsigned int ckmax_g:8;
	unsigned int ckmax_b:8;
	unsigned int res9:8;
	/* Word 7(32-bit) in DDR memory */
	unsigned int ckmin_r:8;
	unsigned int ckmin_g:8;
	unsigned int ckmin_b:8;
	unsigned int res10:8;
	/* Word 8(32-bit) in DDR memory */
	unsigned int next_ad;
	/* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
	unsigned int res1;
	unsigned int res2;
	unsigned int res3;
}__attribute__ ((packed));

/*
 * DIU register map
 */
struct diu {
	unsigned int desc[3];
	unsigned int gamma;
	unsigned int pallete;
	unsigned int cursor;
	unsigned int curs_pos;
	unsigned int diu_mode;
	unsigned int bgnd;
	unsigned int bgnd_wb;
	unsigned int disp_size;
	unsigned int wb_size;
	unsigned int wb_mem_addr;
	unsigned int hsyn_para;
	unsigned int vsyn_para;
	unsigned int syn_pol;
	unsigned int thresholds;
	unsigned int int_status;
	unsigned int int_mask;
	unsigned int colorbar[8];
	unsigned int filling;
	unsigned int plut;
} __attribute__ ((packed));

struct diu_hw {
	struct diu *diu_reg;
	volatile unsigned int mode;		/* DIU operation mode */
};

struct diu_addr {
	unsigned char  *  paddr;	/* Virtual address */
	unsigned int	   offset;
};

/*
 * Modes of operation of DIU
 */
#define MFB_MODE0	0	/* DIU off */
#define MFB_MODE1	1	/* All three planes output to display */
#define MFB_MODE2	2	/* Plane 1 to display,
				 * planes 2+3 written back to memory */
#define MFB_MODE3	3	/* All three planes written back to memory */
#define MFB_MODE4	4	/* Color bar generation */

#define MAX_CURS		32

static struct fb_info fsl_fb_info;
static struct diu_addr gamma, cursor;
static struct diu_ad fsl_diu_fb_ad __attribute__ ((aligned(32)));
static struct diu_ad dummy_ad __attribute__ ((aligned(32)));
static unsigned char *dummy_fb;
static struct diu_hw dr = {
	.mode = MFB_MODE1,
};

int fb_enabled = 0;
int fb_initialized = 0;
const int default_xres = 1280;
const int default_pixel_format = 0x88882317;

static int map_video_memory(struct fb_info *info, unsigned long bytes_align);
static void enable_lcdc(void);
static void disable_lcdc(void);
static int fsl_diu_enable_panel(struct fb_info *info);
static int fsl_diu_disable_panel(struct fb_info *info);
static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align);
void diu_set_pixel_clock(unsigned int pixclock);

int fsl_diu_init(int xres,
		 unsigned int pixel_format,
		 int gamma_fix,
		 unsigned char *splash_bmp)
{
	struct fb_videomode *fsl_diu_mode_db;
	struct diu_ad *ad = &fsl_diu_fb_ad;
	struct diu *hw;
	struct fb_info *info = &fsl_fb_info;
	struct fb_var_screeninfo *var = &info->var;
	unsigned char *gamma_table_base;
	unsigned int i, j;

	debug("Enter fsl_diu_init\n");
	dr.diu_reg = (struct diu *) (CFG_DIU_ADDR);
	hw = (struct diu *) dr.diu_reg;

	disable_lcdc();

	if (xres == 1280) {
		fsl_diu_mode_db = &fsl_diu_mode_1280;
	} else {
		fsl_diu_mode_db = &fsl_diu_mode_1024;
	}

	if (0 == fb_initialized) {
		allocate_buf(&gamma, 768, 32);
		debug("gamma is allocated @ 0x%x\n",
			(unsigned int)gamma.paddr);
		allocate_buf(&cursor, MAX_CURS * MAX_CURS * 2, 32);
		debug("curosr is allocated @ 0x%x\n",
			(unsigned int)cursor.paddr);

		/* create a dummy fb and dummy ad */
		dummy_fb = malloc(64);
		if (NULL == dummy_fb) {
			printf("Cannot allocate dummy fb\n");
			return -1;
		}
		dummy_ad.addr = cpu_to_le32((unsigned int)dummy_fb);
		dummy_ad.pix_fmt = 0x88882317;
		dummy_ad.src_size_g_alpha = 0x04400000;	/* alpha = 0 */
		dummy_ad.aoi_size = 0x02000400;
		dummy_ad.offset_xyi = 0;
		dummy_ad.offset_xyd = 0;
		dummy_ad.next_ad = 0;
		/* Memory allocation for framebuffer */
		if (map_video_memory(info, 32)) {
			printf("Unable to allocate fb memory 1\n");
			return -1;
		}
	}

	memset(info->screen_base, 0, info->smem_len);

	dr.diu_reg->desc[0] = (unsigned int) &dummy_ad;
	dr.diu_reg->desc[1] = (unsigned int) &dummy_ad;
	dr.diu_reg->desc[2] = (unsigned int) &dummy_ad;
	debug("dummy dr.diu_reg->desc[0] = 0x%x\n", dr.diu_reg->desc[0]);
	debug("dummy desc[0] = 0x%x\n", hw->desc[0]);

	/* read mode info */
	var->xres = fsl_diu_mode_db->xres;
	var->yres = fsl_diu_mode_db->yres;
	var->bits_per_pixel = 32;
	var->pixclock = fsl_diu_mode_db->pixclock;
	var->left_margin = fsl_diu_mode_db->left_margin;
	var->right_margin = fsl_diu_mode_db->right_margin;
	var->upper_margin = fsl_diu_mode_db->upper_margin;
	var->lower_margin = fsl_diu_mode_db->lower_margin;
	var->hsync_len = fsl_diu_mode_db->hsync_len;
	var->vsync_len = fsl_diu_mode_db->vsync_len;
	var->sync = fsl_diu_mode_db->sync;
	var->vmode = fsl_diu_mode_db->vmode;
	info->line_length = var->xres * var->bits_per_pixel / 8;
	info->logo_size = 0;
	info->logo_height = 0;

	ad->pix_fmt = pixel_format;
	ad->addr    = cpu_to_le32((unsigned int)info->screen_base);
	ad->src_size_g_alpha
			= cpu_to_le32((var->yres << 12) | var->xres);
	/* fix me. AOI should not be greater than display size */
	ad->aoi_size	= cpu_to_le32(( var->yres << 16) |  var->xres);
	ad->offset_xyi = 0;
	ad->offset_xyd = 0;

	/* Disable chroma keying function */
	ad->ckmax_r = 0;
	ad->ckmax_g = 0;
	ad->ckmax_b = 0;

	ad->ckmin_r = 255;
	ad->ckmin_g = 255;
	ad->ckmin_b = 255;

	gamma_table_base = gamma.paddr;
	debug("gamma_table_base is allocated @ 0x%x\n",
		(unsigned int)gamma_table_base);

	/* Prep for DIU init  - gamma table */

	for (i = 0; i <= 2; i++)
		for (j = 0; j <= 255; j++)
			*gamma_table_base++ = j;

	if (gamma_fix == 1) {	/* fix the gamma */
		debug("Fix gamma table\n");
		gamma_table_base = gamma.paddr;
		for (i = 0; i < 256*3; i++) {
			gamma_table_base[i] = (gamma_table_base[i] << 2)
				| ((gamma_table_base[i] >> 6) & 0x03);
		}
	}

	debug("update-lcdc: HW - %p\n Disabling DIU\n", hw);

	/* Program DIU registers */

	hw->gamma = (unsigned int) gamma.paddr;
	hw->cursor= (unsigned int) cursor.paddr;
	hw->bgnd = 0x007F7F7F;				/* BGND */
	hw->bgnd_wb = 0;				/* BGND_WB */
	hw->disp_size = var->yres << 16 | var->xres;	/* DISP SIZE */
	hw->wb_size = 0;				/* WB SIZE */
	hw->wb_mem_addr = 0;				/* WB MEM ADDR */
	hw->hsyn_para = var->left_margin << 22 |	/* BP_H */
			var->hsync_len << 11   |	/* PW_H */
			var->right_margin;		/* FP_H */
	hw->vsyn_para = var->upper_margin << 22 |	/* BP_V */
			var->vsync_len << 11    |	/* PW_V  */
			var->lower_margin;		/* FP_V  */

	hw->syn_pol = 0;			/* SYNC SIGNALS POLARITY */
	hw->thresholds = 0x00037800;		/* The Thresholds */
	hw->int_status = 0;			/* INTERRUPT STATUS */
	hw->int_mask = 0;			/* INT MASK */
	hw->plut = 0x01F5F666;

	/* Pixel Clock configuration */
	debug("DIU pixclock in ps - %d\n", var->pixclock);
	diu_set_pixel_clock(var->pixclock);

	fb_initialized = 1;

	if (splash_bmp) {
		info->logo_height = fsl_diu_display_bmp(splash_bmp, 0, 0, 0);
		info->logo_size = info->logo_height * info->line_length;
		debug("logo height %d, logo_size 0x%x\n",
			info->logo_height,info->logo_size);
	}

	/* Enable the DIU */
	fsl_diu_enable_panel(info);
	enable_lcdc();

	return 0;
}

char *fsl_fb_open(struct fb_info **info)
{
	*info = &fsl_fb_info;
	return (char *) ((unsigned int)(*info)->screen_base
			 + (*info)->logo_size);
}

void fsl_diu_close(void)
{
	struct fb_info *info = &fsl_fb_info;
	fsl_diu_disable_panel(info);
}

static int fsl_diu_enable_panel(struct fb_info *info)
{
	struct diu *hw = dr.diu_reg;
	struct diu_ad *ad = &fsl_diu_fb_ad;

	debug("Entered: enable_panel\n");
	if (hw->desc[0] != (unsigned int)ad)
		hw->desc[0] = (unsigned int)ad;
	debug("desc[0] = 0x%x\n", hw->desc[0]);
	return 0;
}

static int fsl_diu_disable_panel(struct fb_info *info)
{
	struct diu *hw = dr.diu_reg;

	debug("Entered: disable_panel\n");
	if (hw->desc[0] != (unsigned int)&dummy_ad)
		hw->desc[0] = (unsigned int)&dummy_ad;
	return 0;
}

static int map_video_memory(struct fb_info *info, unsigned long bytes_align)
{
	unsigned long offset;
	unsigned long mask;

	debug("Entered: map_video_memory\n");
	/* allocate maximum 1280*1024 with 32bpp */
	info->smem_len = 1280 * 4 *1024 + bytes_align;
	debug("MAP_VIDEO_MEMORY: smem_len = %d\n", info->smem_len);
	info->screen_base = malloc(info->smem_len);
	if (info->screen_base == NULL) {
		printf("Unable to allocate fb memory\n");
		return -1;
	}
	info->smem_start = (unsigned int) info->screen_base;
	mask = bytes_align - 1;
	offset = (unsigned long)info->screen_base & mask;
	if (offset) {
		info->screen_base += (bytes_align - offset);
		info->smem_len = info->smem_len - (bytes_align - offset);
	} else
		info->smem_len = info->smem_len - bytes_align;

	info->screen_size = info->smem_len;

	debug("Allocated fb @ 0x%08lx, size=%d.\n",
		info->smem_start, info->smem_len);

	return 0;
}

static void enable_lcdc(void)
{
	struct diu *hw = dr.diu_reg;

	debug("Entered: enable_lcdc, fb_enabled = %d\n", fb_enabled);
	if (!fb_enabled) {
		hw->diu_mode = dr.mode;
		fb_enabled++;
	}
	debug("diu_mode = %d\n", hw->diu_mode);
}

static void disable_lcdc(void)
{
	struct diu *hw = dr.diu_reg;

	debug("Entered: disable_lcdc, fb_enabled = %d\n", fb_enabled);
	if (fb_enabled) {
		hw->diu_mode = 0;
		fb_enabled = 0;
	}
}

/*
 * Align to 64-bit(8-byte), 32-byte, etc.
 */
static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
{
	u32 offset, ssize;
	u32 mask;

	debug("Entered: allocate_buf\n");
	ssize = size + bytes_align;
	buf->paddr = malloc(ssize);
	if (!buf->paddr)
		return -1;

	memset(buf->paddr, 0, ssize);
	mask = bytes_align - 1;
	offset = (u32)buf->paddr & mask;
	if (offset) {
		buf->offset = bytes_align - offset;
		buf->paddr = (unsigned char *) ((u32)buf->paddr + offset);
	} else
		buf->offset = 0;
	return 0;
}

int fsl_diu_display_bmp(unsigned char *bmp,
			int xoffset,
			int yoffset,
			int transpar)
{
	struct fb_info *info = &fsl_fb_info;
	unsigned char r, g, b;
	unsigned int *fb_t, val;
	unsigned char *bitmap;
	unsigned int palette[256];
	int width, height, bpp, ncolors, raster, offset, x, y, i, k, cpp;

	if (!bmp) {
		printf("Must supply a bitmap address\n");
		return 0;
	}

	raster = bmp[10] + (bmp[11] << 8) + (bmp[12] << 16) + (bmp[13] << 24);
	width  = (bmp[21] << 24) | (bmp[20] << 16) | (bmp[19] << 8) | bmp[18];
	height = (bmp[25] << 24) | (bmp[24] << 16) | (bmp[23] << 8) | bmp[22];
	bpp  = (bmp[29] <<  8) | (bmp[28]);
	ncolors = bmp[46] + (bmp[47] << 8) + (bmp[48] << 16) + (bmp[49] << 24);
	bitmap   = bmp + raster;
	cpp = info->var.bits_per_pixel / 8;

	debug("bmp = 0x%08x\n", (unsigned int)bmp);
	debug("bitmap = 0x%08x\n", (unsigned int)bitmap);
	debug("width = %d\n", width);
	debug("height = %d\n", height);
	debug("bpp = %d\n", bpp);
	debug("ncolors = %d\n", ncolors);

	debug("xres = %d\n", info->var.xres);
	debug("yres = %d\n", info->var.yres);
	debug("Screen_base = 0x%x\n", (unsigned int)info->screen_base);

	if (((width+xoffset) > info->var.xres) ||
	    ((height+yoffset) > info->var.yres)) {
		printf("bitmap is out of range, image too large or too much offset\n");
		return 0;
	}
	if (bpp < 24) {
		for (i = 0, offset = 54; i < ncolors; i++, offset += 4)
			palette[i] = (bmp[offset+2] << 16)
				+ (bmp[offset+1] << 8) + bmp[offset];
	}

	switch (bpp) {
	case 1:
		for (y = height - 1; y >= 0; y--) {
			fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp);
			for (x = 0; x < width; x += 8) {
				b = *bitmap++;
				for (k = 0; k < 8; k++) {
					if (b & 0x80)
						*fb_t = palette[1];
					else
						*fb_t = palette[0];
					b = b << 1;
				}
			}
			for (i = (width / 2) % 4; i > 0; i--)
				bitmap++;
		}
		break;
	case 4:
		for (y = height - 1; y >= 0; y--) {
			fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp);
			for (x = 0; x < width; x += 2) {
				b = *bitmap++;
				r = (b >> 4) & 0x0F;
				g =  b & 0x0F;
				*fb_t++ = palette[r];
				*fb_t++ = palette[g];
			}
			for (i = (width / 2) % 4; i > 0; i--)
				bitmap++;
		}
		break;
	case 8:
		for (y = height - 1; y >= 0; y--) {
			fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp);
			for (x = 0; x < width; x++) {
				*fb_t++ = palette[ *bitmap++ ];
			}
			for (i = (width / 2) % 4; i > 0; i--)
				bitmap++;
		}
		break;
	case 24:
		for (y = height - 1; y >= 0; y--) {
			fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp);
			for (x = 0; x < width; x++) {
				b = *bitmap++;
				g = *bitmap++;
				r = *bitmap++;
				val = (r << 16) + (g << 8) + b;
				*fb_t++ = val;
			}
			for (; (x % 4) != 0; x++)	/* 4-byte alignment */
				bitmap++;
		}
		break;
	}

	return height;
}

void fsl_diu_clear_screen(void)
{
	struct fb_info *info = &fsl_fb_info;

	memset(info->screen_base, 0, info->smem_len);
}