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a877880c YS |
1 | /* |
2 | * Copyright 2007 Freescale Semiconductor, Inc. | |
3 | * York Sun <yorksun@freescale.com> | |
4 | * | |
5 | * FSL DIU Framebuffer driver | |
6 | * | |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
23 | * MA 02111-1307 USA | |
24 | */ | |
25 | ||
a877880c YS |
26 | #include <common.h> |
27 | #include <i2c.h> | |
28 | #include <malloc.h> | |
29 | ||
a877880c YS |
30 | #include "fsl_diu_fb.h" |
31 | ||
a877880c YS |
32 | struct fb_videomode { |
33 | const char *name; /* optional */ | |
34 | unsigned int refresh; /* optional */ | |
35 | unsigned int xres; | |
36 | unsigned int yres; | |
37 | unsigned int pixclock; | |
38 | unsigned int left_margin; | |
39 | unsigned int right_margin; | |
40 | unsigned int upper_margin; | |
41 | unsigned int lower_margin; | |
42 | unsigned int hsync_len; | |
43 | unsigned int vsync_len; | |
44 | unsigned int sync; | |
45 | unsigned int vmode; | |
46 | unsigned int flag; | |
47 | }; | |
48 | ||
49 | #define FB_SYNC_VERT_HIGH_ACT 2 /* vertical sync high active */ | |
50 | #define FB_SYNC_COMP_HIGH_ACT 8 /* composite sync high active */ | |
51 | #define FB_VMODE_NONINTERLACED 0 /* non interlaced */ | |
52 | ||
53 | /* | |
54 | * These parameters give default parameters | |
55 | * for video output 1024x768, | |
56 | * FIXME - change timing to proper amounts | |
57 | * hsync 31.5kHz, vsync 60Hz | |
58 | */ | |
59 | static struct fb_videomode fsl_diu_mode_1024 = { | |
60 | .refresh = 60, | |
61 | .xres = 1024, | |
62 | .yres = 768, | |
63 | .pixclock = 15385, | |
64 | .left_margin = 160, | |
65 | .right_margin = 24, | |
66 | .upper_margin = 29, | |
67 | .lower_margin = 3, | |
68 | .hsync_len = 136, | |
69 | .vsync_len = 6, | |
70 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
71 | .vmode = FB_VMODE_NONINTERLACED | |
72 | }; | |
73 | ||
74 | static struct fb_videomode fsl_diu_mode_1280 = { | |
75 | .name = "1280x1024-60", | |
76 | .refresh = 60, | |
77 | .xres = 1280, | |
78 | .yres = 1024, | |
79 | .pixclock = 9375, | |
80 | .left_margin = 38, | |
81 | .right_margin = 128, | |
82 | .upper_margin = 2, | |
83 | .lower_margin = 7, | |
84 | .hsync_len = 216, | |
85 | .vsync_len = 37, | |
86 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
87 | .vmode = FB_VMODE_NONINTERLACED | |
88 | }; | |
89 | ||
90 | /* | |
91 | * These are the fields of area descriptor(in DDR memory) for every plane | |
92 | */ | |
93 | struct diu_ad { | |
94 | /* Word 0(32-bit) in DDR memory */ | |
95 | unsigned int pix_fmt; /* hard coding pixel format */ | |
96 | /* Word 1(32-bit) in DDR memory */ | |
97 | unsigned int addr; | |
98 | /* Word 2(32-bit) in DDR memory */ | |
99 | unsigned int src_size_g_alpha; | |
100 | /* Word 3(32-bit) in DDR memory */ | |
101 | unsigned int aoi_size; | |
102 | /* Word 4(32-bit) in DDR memory */ | |
103 | unsigned int offset_xyi; | |
104 | /* Word 5(32-bit) in DDR memory */ | |
105 | unsigned int offset_xyd; | |
106 | /* Word 6(32-bit) in DDR memory */ | |
107 | unsigned int ckmax_r:8; | |
108 | unsigned int ckmax_g:8; | |
109 | unsigned int ckmax_b:8; | |
110 | unsigned int res9:8; | |
111 | /* Word 7(32-bit) in DDR memory */ | |
112 | unsigned int ckmin_r:8; | |
113 | unsigned int ckmin_g:8; | |
114 | unsigned int ckmin_b:8; | |
115 | unsigned int res10:8; | |
116 | /* Word 8(32-bit) in DDR memory */ | |
117 | unsigned int next_ad; | |
118 | /* Word 9(32-bit) in DDR memory, just for 64-bit aligned */ | |
119 | unsigned int res1; | |
120 | unsigned int res2; | |
121 | unsigned int res3; | |
122 | }__attribute__ ((packed)); | |
123 | ||
124 | /* | |
125 | * DIU register map | |
126 | */ | |
127 | struct diu { | |
128 | unsigned int desc[3]; | |
129 | unsigned int gamma; | |
130 | unsigned int pallete; | |
131 | unsigned int cursor; | |
132 | unsigned int curs_pos; | |
133 | unsigned int diu_mode; | |
134 | unsigned int bgnd; | |
135 | unsigned int bgnd_wb; | |
136 | unsigned int disp_size; | |
137 | unsigned int wb_size; | |
138 | unsigned int wb_mem_addr; | |
139 | unsigned int hsyn_para; | |
140 | unsigned int vsyn_para; | |
141 | unsigned int syn_pol; | |
142 | unsigned int thresholds; | |
143 | unsigned int int_status; | |
144 | unsigned int int_mask; | |
145 | unsigned int colorbar[8]; | |
146 | unsigned int filling; | |
147 | unsigned int plut; | |
148 | } __attribute__ ((packed)); | |
149 | ||
150 | struct diu_hw { | |
151 | struct diu *diu_reg; | |
152 | volatile unsigned int mode; /* DIU operation mode */ | |
153 | }; | |
154 | ||
155 | struct diu_addr { | |
156 | unsigned char * paddr; /* Virtual address */ | |
53677ef1 | 157 | unsigned int offset; |
a877880c YS |
158 | }; |
159 | ||
a877880c YS |
160 | /* |
161 | * Modes of operation of DIU | |
162 | */ | |
163 | #define MFB_MODE0 0 /* DIU off */ | |
164 | #define MFB_MODE1 1 /* All three planes output to display */ | |
165 | #define MFB_MODE2 2 /* Plane 1 to display, | |
166 | * planes 2+3 written back to memory */ | |
167 | #define MFB_MODE3 3 /* All three planes written back to memory */ | |
168 | #define MFB_MODE4 4 /* Color bar generation */ | |
169 | ||
170 | #define MAX_CURS 32 | |
171 | ||
a877880c YS |
172 | static struct fb_info fsl_fb_info; |
173 | static struct diu_addr gamma, cursor; | |
174 | static struct diu_ad fsl_diu_fb_ad __attribute__ ((aligned(32))); | |
175 | static struct diu_ad dummy_ad __attribute__ ((aligned(32))); | |
176 | static unsigned char *dummy_fb; | |
177 | static struct diu_hw dr = { | |
178 | .mode = MFB_MODE1, | |
179 | }; | |
180 | ||
181 | int fb_enabled = 0; | |
182 | int fb_initialized = 0; | |
183 | const int default_xres = 1280; | |
184 | const int default_pixel_format = 0x88882317; | |
185 | ||
186 | static int map_video_memory(struct fb_info *info, unsigned long bytes_align); | |
187 | static void enable_lcdc(void); | |
188 | static void disable_lcdc(void); | |
189 | static int fsl_diu_enable_panel(struct fb_info *info); | |
190 | static int fsl_diu_disable_panel(struct fb_info *info); | |
191 | static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align); | |
3b80c5f5 | 192 | void diu_set_pixel_clock(unsigned int pixclock); |
a877880c | 193 | |
a877880c YS |
194 | int fsl_diu_init(int xres, |
195 | unsigned int pixel_format, | |
196 | int gamma_fix, | |
197 | unsigned char *splash_bmp) | |
198 | { | |
199 | struct fb_videomode *fsl_diu_mode_db; | |
200 | struct diu_ad *ad = &fsl_diu_fb_ad; | |
201 | struct diu *hw; | |
202 | struct fb_info *info = &fsl_fb_info; | |
203 | struct fb_var_screeninfo *var = &info->var; | |
a877880c YS |
204 | unsigned char *gamma_table_base; |
205 | unsigned int i, j; | |
a877880c | 206 | |
a48ff68d | 207 | debug("Enter fsl_diu_init\n"); |
6d0f6bcf | 208 | dr.diu_reg = (struct diu *) (CONFIG_SYS_DIU_ADDR); |
a877880c YS |
209 | hw = (struct diu *) dr.diu_reg; |
210 | ||
211 | disable_lcdc(); | |
212 | ||
213 | if (xres == 1280) { | |
214 | fsl_diu_mode_db = &fsl_diu_mode_1280; | |
215 | } else { | |
216 | fsl_diu_mode_db = &fsl_diu_mode_1024; | |
217 | } | |
218 | ||
219 | if (0 == fb_initialized) { | |
220 | allocate_buf(&gamma, 768, 32); | |
a48ff68d | 221 | debug("gamma is allocated @ 0x%x\n", |
a877880c YS |
222 | (unsigned int)gamma.paddr); |
223 | allocate_buf(&cursor, MAX_CURS * MAX_CURS * 2, 32); | |
a48ff68d | 224 | debug("curosr is allocated @ 0x%x\n", |
a877880c YS |
225 | (unsigned int)cursor.paddr); |
226 | ||
227 | /* create a dummy fb and dummy ad */ | |
228 | dummy_fb = malloc(64); | |
229 | if (NULL == dummy_fb) { | |
230 | printf("Cannot allocate dummy fb\n"); | |
231 | return -1; | |
232 | } | |
233 | dummy_ad.addr = cpu_to_le32((unsigned int)dummy_fb); | |
234 | dummy_ad.pix_fmt = 0x88882317; | |
235 | dummy_ad.src_size_g_alpha = 0x04400000; /* alpha = 0 */ | |
236 | dummy_ad.aoi_size = 0x02000400; | |
237 | dummy_ad.offset_xyi = 0; | |
238 | dummy_ad.offset_xyd = 0; | |
239 | dummy_ad.next_ad = 0; | |
240 | /* Memory allocation for framebuffer */ | |
241 | if (map_video_memory(info, 32)) { | |
242 | printf("Unable to allocate fb memory 1\n"); | |
243 | return -1; | |
244 | } | |
a877880c YS |
245 | } |
246 | ||
ec4d8c1c NY |
247 | memset(info->screen_base, 0, info->smem_len); |
248 | ||
a877880c YS |
249 | dr.diu_reg->desc[0] = (unsigned int) &dummy_ad; |
250 | dr.diu_reg->desc[1] = (unsigned int) &dummy_ad; | |
251 | dr.diu_reg->desc[2] = (unsigned int) &dummy_ad; | |
a48ff68d YS |
252 | debug("dummy dr.diu_reg->desc[0] = 0x%x\n", dr.diu_reg->desc[0]); |
253 | debug("dummy desc[0] = 0x%x\n", hw->desc[0]); | |
a877880c YS |
254 | |
255 | /* read mode info */ | |
256 | var->xres = fsl_diu_mode_db->xres; | |
257 | var->yres = fsl_diu_mode_db->yres; | |
258 | var->bits_per_pixel = 32; | |
259 | var->pixclock = fsl_diu_mode_db->pixclock; | |
260 | var->left_margin = fsl_diu_mode_db->left_margin; | |
261 | var->right_margin = fsl_diu_mode_db->right_margin; | |
262 | var->upper_margin = fsl_diu_mode_db->upper_margin; | |
263 | var->lower_margin = fsl_diu_mode_db->lower_margin; | |
264 | var->hsync_len = fsl_diu_mode_db->hsync_len; | |
265 | var->vsync_len = fsl_diu_mode_db->vsync_len; | |
266 | var->sync = fsl_diu_mode_db->sync; | |
267 | var->vmode = fsl_diu_mode_db->vmode; | |
268 | info->line_length = var->xres * var->bits_per_pixel / 8; | |
269 | info->logo_size = 0; | |
270 | info->logo_height = 0; | |
271 | ||
272 | ad->pix_fmt = pixel_format; | |
273 | ad->addr = cpu_to_le32((unsigned int)info->screen_base); | |
274 | ad->src_size_g_alpha | |
275 | = cpu_to_le32((var->yres << 12) | var->xres); | |
276 | /* fix me. AOI should not be greater than display size */ | |
53677ef1 | 277 | ad->aoi_size = cpu_to_le32(( var->yres << 16) | var->xres); |
a877880c YS |
278 | ad->offset_xyi = 0; |
279 | ad->offset_xyd = 0; | |
280 | ||
281 | /* Disable chroma keying function */ | |
282 | ad->ckmax_r = 0; | |
283 | ad->ckmax_g = 0; | |
284 | ad->ckmax_b = 0; | |
285 | ||
286 | ad->ckmin_r = 255; | |
287 | ad->ckmin_g = 255; | |
288 | ad->ckmin_b = 255; | |
289 | ||
290 | gamma_table_base = gamma.paddr; | |
a48ff68d | 291 | debug("gamma_table_base is allocated @ 0x%x\n", |
a877880c YS |
292 | (unsigned int)gamma_table_base); |
293 | ||
294 | /* Prep for DIU init - gamma table */ | |
295 | ||
296 | for (i = 0; i <= 2; i++) | |
297 | for (j = 0; j <= 255; j++) | |
298 | *gamma_table_base++ = j; | |
299 | ||
300 | if (gamma_fix == 1) { /* fix the gamma */ | |
a48ff68d | 301 | debug("Fix gamma table\n"); |
a877880c YS |
302 | gamma_table_base = gamma.paddr; |
303 | for (i = 0; i < 256*3; i++) { | |
304 | gamma_table_base[i] = (gamma_table_base[i] << 2) | |
305 | | ((gamma_table_base[i] >> 6) & 0x03); | |
306 | } | |
307 | } | |
308 | ||
a48ff68d | 309 | debug("update-lcdc: HW - %p\n Disabling DIU\n", hw); |
a877880c YS |
310 | |
311 | /* Program DIU registers */ | |
312 | ||
313 | hw->gamma = (unsigned int) gamma.paddr; | |
314 | hw->cursor= (unsigned int) cursor.paddr; | |
315 | hw->bgnd = 0x007F7F7F; /* BGND */ | |
53677ef1 | 316 | hw->bgnd_wb = 0; /* BGND_WB */ |
a877880c YS |
317 | hw->disp_size = var->yres << 16 | var->xres; /* DISP SIZE */ |
318 | hw->wb_size = 0; /* WB SIZE */ | |
319 | hw->wb_mem_addr = 0; /* WB MEM ADDR */ | |
320 | hw->hsyn_para = var->left_margin << 22 | /* BP_H */ | |
321 | var->hsync_len << 11 | /* PW_H */ | |
322 | var->right_margin; /* FP_H */ | |
323 | hw->vsyn_para = var->upper_margin << 22 | /* BP_V */ | |
324 | var->vsync_len << 11 | /* PW_V */ | |
325 | var->lower_margin; /* FP_V */ | |
326 | ||
a877880c YS |
327 | hw->syn_pol = 0; /* SYNC SIGNALS POLARITY */ |
328 | hw->thresholds = 0x00037800; /* The Thresholds */ | |
329 | hw->int_status = 0; /* INTERRUPT STATUS */ | |
330 | hw->int_mask = 0; /* INT MASK */ | |
331 | hw->plut = 0x01F5F666; | |
332 | ||
3b80c5f5 | 333 | /* Pixel Clock configuration */ |
a48ff68d | 334 | debug("DIU pixclock in ps - %d\n", var->pixclock); |
3b80c5f5 | 335 | diu_set_pixel_clock(var->pixclock); |
a877880c YS |
336 | |
337 | fb_initialized = 1; | |
338 | ||
339 | if (splash_bmp) { | |
340 | info->logo_height = fsl_diu_display_bmp(splash_bmp, 0, 0, 0); | |
341 | info->logo_size = info->logo_height * info->line_length; | |
a48ff68d | 342 | debug("logo height %d, logo_size 0x%x\n", |
a877880c YS |
343 | info->logo_height,info->logo_size); |
344 | } | |
345 | ||
346 | /* Enable the DIU */ | |
347 | fsl_diu_enable_panel(info); | |
348 | enable_lcdc(); | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | char *fsl_fb_open(struct fb_info **info) | |
354 | { | |
355 | *info = &fsl_fb_info; | |
356 | return (char *) ((unsigned int)(*info)->screen_base | |
357 | + (*info)->logo_size); | |
358 | } | |
359 | ||
360 | void fsl_diu_close(void) | |
361 | { | |
362 | struct fb_info *info = &fsl_fb_info; | |
363 | fsl_diu_disable_panel(info); | |
364 | } | |
365 | ||
366 | static int fsl_diu_enable_panel(struct fb_info *info) | |
367 | { | |
368 | struct diu *hw = dr.diu_reg; | |
369 | struct diu_ad *ad = &fsl_diu_fb_ad; | |
370 | ||
a48ff68d | 371 | debug("Entered: enable_panel\n"); |
a877880c YS |
372 | if (hw->desc[0] != (unsigned int)ad) |
373 | hw->desc[0] = (unsigned int)ad; | |
a48ff68d | 374 | debug("desc[0] = 0x%x\n", hw->desc[0]); |
a877880c YS |
375 | return 0; |
376 | } | |
377 | ||
378 | static int fsl_diu_disable_panel(struct fb_info *info) | |
379 | { | |
380 | struct diu *hw = dr.diu_reg; | |
381 | ||
a48ff68d | 382 | debug("Entered: disable_panel\n"); |
a877880c YS |
383 | if (hw->desc[0] != (unsigned int)&dummy_ad) |
384 | hw->desc[0] = (unsigned int)&dummy_ad; | |
385 | return 0; | |
386 | } | |
387 | ||
388 | static int map_video_memory(struct fb_info *info, unsigned long bytes_align) | |
389 | { | |
390 | unsigned long offset; | |
391 | unsigned long mask; | |
392 | ||
a48ff68d | 393 | debug("Entered: map_video_memory\n"); |
a877880c YS |
394 | /* allocate maximum 1280*1024 with 32bpp */ |
395 | info->smem_len = 1280 * 4 *1024 + bytes_align; | |
a48ff68d | 396 | debug("MAP_VIDEO_MEMORY: smem_len = %d\n", info->smem_len); |
a877880c YS |
397 | info->screen_base = malloc(info->smem_len); |
398 | if (info->screen_base == NULL) { | |
399 | printf("Unable to allocate fb memory\n"); | |
400 | return -1; | |
401 | } | |
402 | info->smem_start = (unsigned int) info->screen_base; | |
403 | mask = bytes_align - 1; | |
404 | offset = (unsigned long)info->screen_base & mask; | |
405 | if (offset) { | |
ec4d8c1c | 406 | info->screen_base += (bytes_align - offset); |
a877880c YS |
407 | info->smem_len = info->smem_len - (bytes_align - offset); |
408 | } else | |
409 | info->smem_len = info->smem_len - bytes_align; | |
410 | ||
411 | info->screen_size = info->smem_len; | |
412 | ||
a48ff68d | 413 | debug("Allocated fb @ 0x%08lx, size=%d.\n", |
a877880c YS |
414 | info->smem_start, info->smem_len); |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
419 | static void enable_lcdc(void) | |
420 | { | |
421 | struct diu *hw = dr.diu_reg; | |
422 | ||
a48ff68d | 423 | debug("Entered: enable_lcdc, fb_enabled = %d\n", fb_enabled); |
a877880c YS |
424 | if (!fb_enabled) { |
425 | hw->diu_mode = dr.mode; | |
426 | fb_enabled++; | |
427 | } | |
a48ff68d | 428 | debug("diu_mode = %d\n", hw->diu_mode); |
a877880c YS |
429 | } |
430 | ||
431 | static void disable_lcdc(void) | |
432 | { | |
433 | struct diu *hw = dr.diu_reg; | |
434 | ||
a48ff68d | 435 | debug("Entered: disable_lcdc, fb_enabled = %d\n", fb_enabled); |
a877880c YS |
436 | if (fb_enabled) { |
437 | hw->diu_mode = 0; | |
438 | fb_enabled = 0; | |
439 | } | |
440 | } | |
441 | ||
a877880c YS |
442 | /* |
443 | * Align to 64-bit(8-byte), 32-byte, etc. | |
444 | */ | |
445 | static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align) | |
446 | { | |
447 | u32 offset, ssize; | |
448 | u32 mask; | |
449 | ||
a48ff68d | 450 | debug("Entered: allocate_buf\n"); |
a877880c YS |
451 | ssize = size + bytes_align; |
452 | buf->paddr = malloc(ssize); | |
453 | if (!buf->paddr) | |
454 | return -1; | |
455 | ||
456 | memset(buf->paddr, 0, ssize); | |
457 | mask = bytes_align - 1; | |
458 | offset = (u32)buf->paddr & mask; | |
459 | if (offset) { | |
460 | buf->offset = bytes_align - offset; | |
461 | buf->paddr = (unsigned char *) ((u32)buf->paddr + offset); | |
462 | } else | |
463 | buf->offset = 0; | |
464 | return 0; | |
465 | } | |
466 | ||
467 | int fsl_diu_display_bmp(unsigned char *bmp, | |
468 | int xoffset, | |
469 | int yoffset, | |
470 | int transpar) | |
471 | { | |
472 | struct fb_info *info = &fsl_fb_info; | |
473 | unsigned char r, g, b; | |
474 | unsigned int *fb_t, val; | |
475 | unsigned char *bitmap; | |
476 | unsigned int palette[256]; | |
477 | int width, height, bpp, ncolors, raster, offset, x, y, i, k, cpp; | |
478 | ||
479 | if (!bmp) { | |
480 | printf("Must supply a bitmap address\n"); | |
481 | return 0; | |
482 | } | |
483 | ||
484 | raster = bmp[10] + (bmp[11] << 8) + (bmp[12] << 16) + (bmp[13] << 24); | |
485 | width = (bmp[21] << 24) | (bmp[20] << 16) | (bmp[19] << 8) | bmp[18]; | |
486 | height = (bmp[25] << 24) | (bmp[24] << 16) | (bmp[23] << 8) | bmp[22]; | |
487 | bpp = (bmp[29] << 8) | (bmp[28]); | |
488 | ncolors = bmp[46] + (bmp[47] << 8) + (bmp[48] << 16) + (bmp[49] << 24); | |
489 | bitmap = bmp + raster; | |
490 | cpp = info->var.bits_per_pixel / 8; | |
491 | ||
a48ff68d YS |
492 | debug("bmp = 0x%08x\n", (unsigned int)bmp); |
493 | debug("bitmap = 0x%08x\n", (unsigned int)bitmap); | |
494 | debug("width = %d\n", width); | |
495 | debug("height = %d\n", height); | |
496 | debug("bpp = %d\n", bpp); | |
497 | debug("ncolors = %d\n", ncolors); | |
a877880c | 498 | |
a48ff68d YS |
499 | debug("xres = %d\n", info->var.xres); |
500 | debug("yres = %d\n", info->var.yres); | |
501 | debug("Screen_base = 0x%x\n", (unsigned int)info->screen_base); | |
a877880c YS |
502 | |
503 | if (((width+xoffset) > info->var.xres) || | |
504 | ((height+yoffset) > info->var.yres)) { | |
505 | printf("bitmap is out of range, image too large or too much offset\n"); | |
506 | return 0; | |
507 | } | |
508 | if (bpp < 24) { | |
509 | for (i = 0, offset = 54; i < ncolors; i++, offset += 4) | |
510 | palette[i] = (bmp[offset+2] << 16) | |
511 | + (bmp[offset+1] << 8) + bmp[offset]; | |
512 | } | |
513 | ||
514 | switch (bpp) { | |
515 | case 1: | |
516 | for (y = height - 1; y >= 0; y--) { | |
517 | fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp); | |
518 | for (x = 0; x < width; x += 8) { | |
519 | b = *bitmap++; | |
520 | for (k = 0; k < 8; k++) { | |
521 | if (b & 0x80) | |
522 | *fb_t = palette[1]; | |
523 | else | |
524 | *fb_t = palette[0]; | |
525 | b = b << 1; | |
526 | } | |
527 | } | |
528 | for (i = (width / 2) % 4; i > 0; i--) | |
529 | bitmap++; | |
530 | } | |
531 | break; | |
532 | case 4: | |
533 | for (y = height - 1; y >= 0; y--) { | |
534 | fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp); | |
535 | for (x = 0; x < width; x += 2) { | |
536 | b = *bitmap++; | |
537 | r = (b >> 4) & 0x0F; | |
538 | g = b & 0x0F; | |
539 | *fb_t++ = palette[r]; | |
540 | *fb_t++ = palette[g]; | |
541 | } | |
542 | for (i = (width / 2) % 4; i > 0; i--) | |
543 | bitmap++; | |
544 | } | |
545 | break; | |
546 | case 8: | |
547 | for (y = height - 1; y >= 0; y--) { | |
548 | fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp); | |
549 | for (x = 0; x < width; x++) { | |
550 | *fb_t++ = palette[ *bitmap++ ]; | |
551 | } | |
552 | for (i = (width / 2) % 4; i > 0; i--) | |
553 | bitmap++; | |
554 | } | |
555 | break; | |
556 | case 24: | |
557 | for (y = height - 1; y >= 0; y--) { | |
558 | fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp); | |
559 | for (x = 0; x < width; x++) { | |
560 | b = *bitmap++; | |
561 | g = *bitmap++; | |
562 | r = *bitmap++; | |
563 | val = (r << 16) + (g << 8) + b; | |
564 | *fb_t++ = val; | |
565 | } | |
566 | for (; (x % 4) != 0; x++) /* 4-byte alignment */ | |
567 | bitmap++; | |
568 | } | |
569 | break; | |
570 | } | |
571 | ||
572 | return height; | |
573 | } | |
574 | ||
575 | void fsl_diu_clear_screen(void) | |
576 | { | |
577 | struct fb_info *info = &fsl_fb_info; | |
578 | ||
579 | memset(info->screen_base, 0, info->smem_len); | |
580 | } |