2 * Copyright 2007 Freescale Semiconductor, Inc.
3 * York Sun <yorksun@freescale.com>
5 * FSL DIU Framebuffer driver
7 * See file CREDITS for list of people who contributed to this
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.
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.
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,
31 #ifdef CONFIG_FSL_DIU_FB
33 #include "fsl_diu_fb.h"
37 #define DPRINTF(fmt, args...) printf("%s: " fmt,__FUNCTION__,## args)
39 #define DPRINTF(fmt, args...)
42 struct fb_var_screeninfo
{
43 unsigned int xres
; /* visible resolution */
46 unsigned int bits_per_pixel
; /* guess what */
48 /* Timing: All values in pixclocks, except pixclock (of course) */
49 unsigned int pixclock
; /* pixel clock in ps (pico seconds) */
50 unsigned int left_margin
; /* time from sync to picture */
51 unsigned int right_margin
; /* time from picture to sync */
52 unsigned int upper_margin
; /* time from sync to picture */
53 unsigned int lower_margin
;
54 unsigned int hsync_len
; /* length of horizontal sync */
55 unsigned int vsync_len
; /* length of vertical sync */
56 unsigned int sync
; /* see FB_SYNC_* */
57 unsigned int vmode
; /* see FB_VMODE_* */
58 unsigned int rotate
; /* angle we rotate counter clockwise */
62 struct fb_var_screeninfo var
; /* Current var */
63 unsigned long smem_start
; /* Start of frame buffer mem */
64 /* (physical address) */
65 unsigned int smem_len
; /* Length of frame buffer mem */
66 unsigned int type
; /* see FB_TYPE_* */
67 unsigned int line_length
; /* length of a line in bytes */
70 unsigned long screen_size
;
72 unsigned int logo_size
;
76 const char *name
; /* optional */
77 unsigned int refresh
; /* optional */
80 unsigned int pixclock
;
81 unsigned int left_margin
;
82 unsigned int right_margin
;
83 unsigned int upper_margin
;
84 unsigned int lower_margin
;
85 unsigned int hsync_len
;
86 unsigned int vsync_len
;
92 #define FB_SYNC_VERT_HIGH_ACT 2 /* vertical sync high active */
93 #define FB_SYNC_COMP_HIGH_ACT 8 /* composite sync high active */
94 #define FB_VMODE_NONINTERLACED 0 /* non interlaced */
97 * These parameters give default parameters
98 * for video output 1024x768,
99 * FIXME - change timing to proper amounts
100 * hsync 31.5kHz, vsync 60Hz
102 static struct fb_videomode fsl_diu_mode_1024
= {
113 .sync
= FB_SYNC_COMP_HIGH_ACT
| FB_SYNC_VERT_HIGH_ACT
,
114 .vmode
= FB_VMODE_NONINTERLACED
117 static struct fb_videomode fsl_diu_mode_1280
= {
118 .name
= "1280x1024-60",
129 .sync
= FB_SYNC_COMP_HIGH_ACT
| FB_SYNC_VERT_HIGH_ACT
,
130 .vmode
= FB_VMODE_NONINTERLACED
134 * These are the fields of area descriptor(in DDR memory) for every plane
137 /* Word 0(32-bit) in DDR memory */
138 unsigned int pix_fmt
; /* hard coding pixel format */
139 /* Word 1(32-bit) in DDR memory */
141 /* Word 2(32-bit) in DDR memory */
142 unsigned int src_size_g_alpha
;
143 /* Word 3(32-bit) in DDR memory */
144 unsigned int aoi_size
;
145 /* Word 4(32-bit) in DDR memory */
146 unsigned int offset_xyi
;
147 /* Word 5(32-bit) in DDR memory */
148 unsigned int offset_xyd
;
149 /* Word 6(32-bit) in DDR memory */
150 unsigned int ckmax_r
:8;
151 unsigned int ckmax_g
:8;
152 unsigned int ckmax_b
:8;
154 /* Word 7(32-bit) in DDR memory */
155 unsigned int ckmin_r
:8;
156 unsigned int ckmin_g
:8;
157 unsigned int ckmin_b
:8;
158 unsigned int res10
:8;
159 /* Word 8(32-bit) in DDR memory */
160 unsigned int next_ad
;
161 /* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
165 }__attribute__ ((packed
));
171 unsigned int desc
[3];
173 unsigned int pallete
;
175 unsigned int curs_pos
;
176 unsigned int diu_mode
;
178 unsigned int bgnd_wb
;
179 unsigned int disp_size
;
180 unsigned int wb_size
;
181 unsigned int wb_mem_addr
;
182 unsigned int hsyn_para
;
183 unsigned int vsyn_para
;
184 unsigned int syn_pol
;
185 unsigned int thresholds
;
186 unsigned int int_status
;
187 unsigned int int_mask
;
188 unsigned int colorbar
[8];
189 unsigned int filling
;
191 } __attribute__ ((packed
));
195 volatile unsigned int mode
; /* DIU operation mode */
199 unsigned char * paddr
; /* Virtual address */
203 #define FSL_DIU_BASE_OFFSET 0x2C000 /* Offset of Display Interface Unit */
206 * Modes of operation of DIU
208 #define MFB_MODE0 0 /* DIU off */
209 #define MFB_MODE1 1 /* All three planes output to display */
210 #define MFB_MODE2 2 /* Plane 1 to display,
211 * planes 2+3 written back to memory */
212 #define MFB_MODE3 3 /* All three planes written back to memory */
213 #define MFB_MODE4 4 /* Color bar generation */
219 static struct fb_info fsl_fb_info
;
220 static struct diu_addr gamma
, cursor
;
221 static struct diu_ad fsl_diu_fb_ad
__attribute__ ((aligned(32)));
222 static struct diu_ad dummy_ad
__attribute__ ((aligned(32)));
223 static unsigned char *dummy_fb
;
224 static struct diu_hw dr
= {
229 int fb_initialized
= 0;
230 const int default_xres
= 1280;
231 const int default_pixel_format
= 0x88882317;
233 static int map_video_memory(struct fb_info
*info
, unsigned long bytes_align
);
234 static void enable_lcdc(void);
235 static void disable_lcdc(void);
236 static int fsl_diu_enable_panel(struct fb_info
*info
);
237 static int fsl_diu_disable_panel(struct fb_info
*info
);
238 static int allocate_buf(struct diu_addr
*buf
, u32 size
, u32 bytes_align
);
239 static u32
get_busfreq(void);
242 int fsl_diu_init(int xres
,
243 unsigned int pixel_format
,
245 unsigned char *splash_bmp
)
247 struct fb_videomode
*fsl_diu_mode_db
;
248 struct diu_ad
*ad
= &fsl_diu_fb_ad
;
250 struct fb_info
*info
= &fsl_fb_info
;
251 struct fb_var_screeninfo
*var
= &info
->var
;
252 volatile immap_t
*immap
= (immap_t
*)CFG_IMMR
;
253 volatile ccsr_gur_t
*gur
= &immap
->im_gur
;
254 volatile unsigned int *guts_clkdvdr
= &gur
->clkdvdr
;
255 unsigned char *gamma_table_base
;
257 unsigned long speed_ccb
, temp
, pixval
;
259 DPRINTF("Enter fsl_diu_init\n");
260 dr
.diu_reg
= (struct diu
*) (CFG_IMMR
+ FSL_DIU_BASE_OFFSET
);
261 hw
= (struct diu
*) dr
.diu_reg
;
266 fsl_diu_mode_db
= &fsl_diu_mode_1280
;
268 fsl_diu_mode_db
= &fsl_diu_mode_1024
;
271 if (0 == fb_initialized
) {
272 allocate_buf(&gamma
, 768, 32);
273 DPRINTF("gamma is allocated @ 0x%x\n",
274 (unsigned int)gamma
.paddr
);
275 allocate_buf(&cursor
, MAX_CURS
* MAX_CURS
* 2, 32);
276 DPRINTF("curosr is allocated @ 0x%x\n",
277 (unsigned int)cursor
.paddr
);
279 /* create a dummy fb and dummy ad */
280 dummy_fb
= malloc(64);
281 if (NULL
== dummy_fb
) {
282 printf("Cannot allocate dummy fb\n");
285 dummy_ad
.addr
= cpu_to_le32((unsigned int)dummy_fb
);
286 dummy_ad
.pix_fmt
= 0x88882317;
287 dummy_ad
.src_size_g_alpha
= 0x04400000; /* alpha = 0 */
288 dummy_ad
.aoi_size
= 0x02000400;
289 dummy_ad
.offset_xyi
= 0;
290 dummy_ad
.offset_xyd
= 0;
291 dummy_ad
.next_ad
= 0;
292 /* Memory allocation for framebuffer */
293 if (map_video_memory(info
, 32)) {
294 printf("Unable to allocate fb memory 1\n");
298 memset(info
->screen_base
, 0, info
->smem_len
);
301 dr
.diu_reg
->desc
[0] = (unsigned int) &dummy_ad
;
302 dr
.diu_reg
->desc
[1] = (unsigned int) &dummy_ad
;
303 dr
.diu_reg
->desc
[2] = (unsigned int) &dummy_ad
;
304 DPRINTF("dummy dr.diu_reg->desc[0] = 0x%x\n", dr
.diu_reg
->desc
[0]);
305 DPRINTF("dummy desc[0] = 0x%x\n", hw
->desc
[0]);
308 var
->xres
= fsl_diu_mode_db
->xres
;
309 var
->yres
= fsl_diu_mode_db
->yres
;
310 var
->bits_per_pixel
= 32;
311 var
->pixclock
= fsl_diu_mode_db
->pixclock
;
312 var
->left_margin
= fsl_diu_mode_db
->left_margin
;
313 var
->right_margin
= fsl_diu_mode_db
->right_margin
;
314 var
->upper_margin
= fsl_diu_mode_db
->upper_margin
;
315 var
->lower_margin
= fsl_diu_mode_db
->lower_margin
;
316 var
->hsync_len
= fsl_diu_mode_db
->hsync_len
;
317 var
->vsync_len
= fsl_diu_mode_db
->vsync_len
;
318 var
->sync
= fsl_diu_mode_db
->sync
;
319 var
->vmode
= fsl_diu_mode_db
->vmode
;
320 info
->line_length
= var
->xres
* var
->bits_per_pixel
/ 8;
322 info
->logo_height
= 0;
324 ad
->pix_fmt
= pixel_format
;
325 ad
->addr
= cpu_to_le32((unsigned int)info
->screen_base
);
327 = cpu_to_le32((var
->yres
<< 12) | var
->xres
);
328 /* fix me. AOI should not be greater than display size */
329 ad
->aoi_size
= cpu_to_le32(( var
->yres
<< 16) | var
->xres
);
333 /* Disable chroma keying function */
342 gamma_table_base
= gamma
.paddr
;
343 DPRINTF("gamma_table_base is allocated @ 0x%x\n",
344 (unsigned int)gamma_table_base
);
346 /* Prep for DIU init - gamma table */
348 for (i
= 0; i
<= 2; i
++)
349 for (j
= 0; j
<= 255; j
++)
350 *gamma_table_base
++ = j
;
352 if (gamma_fix
== 1) { /* fix the gamma */
353 DPRINTF("Fix gamma table\n");
354 gamma_table_base
= gamma
.paddr
;
355 for (i
= 0; i
< 256*3; i
++) {
356 gamma_table_base
[i
] = (gamma_table_base
[i
] << 2)
357 | ((gamma_table_base
[i
] >> 6) & 0x03);
361 DPRINTF("update-lcdc: HW - %p\n Disabling DIU\n", hw
);
363 /* Program DIU registers */
365 hw
->gamma
= (unsigned int) gamma
.paddr
;
366 hw
->cursor
= (unsigned int) cursor
.paddr
;
367 hw
->bgnd
= 0x007F7F7F; /* BGND */
368 hw
->bgnd_wb
= 0; /* BGND_WB */
369 hw
->disp_size
= var
->yres
<< 16 | var
->xres
; /* DISP SIZE */
370 hw
->wb_size
= 0; /* WB SIZE */
371 hw
->wb_mem_addr
= 0; /* WB MEM ADDR */
372 hw
->hsyn_para
= var
->left_margin
<< 22 | /* BP_H */
373 var
->hsync_len
<< 11 | /* PW_H */
374 var
->right_margin
; /* FP_H */
375 hw
->vsyn_para
= var
->upper_margin
<< 22 | /* BP_V */
376 var
->vsync_len
<< 11 | /* PW_V */
377 var
->lower_margin
; /* FP_V */
379 /* Pixel Clock configuration */
380 DPRINTF("DIU: Bus Frequency = %d\n", get_busfreq());
381 speed_ccb
= get_busfreq();
383 DPRINTF("DIU pixclock in ps - %d\n", var
->pixclock
);
386 temp
/= var
->pixclock
;
388 pixval
= speed_ccb
/ temp
;
389 DPRINTF("DIU pixval = %lu\n", pixval
);
391 hw
->syn_pol
= 0; /* SYNC SIGNALS POLARITY */
392 hw
->thresholds
= 0x00037800; /* The Thresholds */
393 hw
->int_status
= 0; /* INTERRUPT STATUS */
394 hw
->int_mask
= 0; /* INT MASK */
395 hw
->plut
= 0x01F5F666;
397 /* Modify PXCLK in GUTS CLKDVDR */
398 DPRINTF("DIU: Current value of CLKDVDR = 0x%08x\n", *guts_clkdvdr
);
399 temp
= *guts_clkdvdr
& 0x2000FFFF;
400 *guts_clkdvdr
= temp
; /* turn off clock */
401 *guts_clkdvdr
= temp
| 0x80000000 | ((pixval
& 0x1F) << 16);
402 DPRINTF("DIU: Modified value of CLKDVDR = 0x%08x\n", *guts_clkdvdr
);
407 info
->logo_height
= fsl_diu_display_bmp(splash_bmp
, 0, 0, 0);
408 info
->logo_size
= info
->logo_height
* info
->line_length
;
409 DPRINTF("logo height %d, logo_size 0x%x\n",
410 info
->logo_height
,info
->logo_size
);
414 fsl_diu_enable_panel(info
);
420 char *fsl_fb_open(struct fb_info
**info
)
422 *info
= &fsl_fb_info
;
423 return (char *) ((unsigned int)(*info
)->screen_base
424 + (*info
)->logo_size
);
427 void fsl_diu_close(void)
429 struct fb_info
*info
= &fsl_fb_info
;
430 fsl_diu_disable_panel(info
);
433 static int fsl_diu_enable_panel(struct fb_info
*info
)
435 struct diu
*hw
= dr
.diu_reg
;
436 struct diu_ad
*ad
= &fsl_diu_fb_ad
;
438 DPRINTF("Entered: enable_panel\n");
439 if (hw
->desc
[0] != (unsigned int)ad
)
440 hw
->desc
[0] = (unsigned int)ad
;
441 DPRINTF("desc[0] = 0x%x\n", hw
->desc
[0]);
445 static int fsl_diu_disable_panel(struct fb_info
*info
)
447 struct diu
*hw
= dr
.diu_reg
;
449 DPRINTF("Entered: disable_panel\n");
450 if (hw
->desc
[0] != (unsigned int)&dummy_ad
)
451 hw
->desc
[0] = (unsigned int)&dummy_ad
;
455 static int map_video_memory(struct fb_info
*info
, unsigned long bytes_align
)
457 unsigned long offset
;
460 DPRINTF("Entered: map_video_memory\n");
461 /* allocate maximum 1280*1024 with 32bpp */
462 info
->smem_len
= 1280 * 4 *1024 + bytes_align
;
463 DPRINTF("MAP_VIDEO_MEMORY: smem_len = %d\n", info
->smem_len
);
464 info
->screen_base
= malloc(info
->smem_len
);
465 if (info
->screen_base
== NULL
) {
466 printf("Unable to allocate fb memory\n");
469 info
->smem_start
= (unsigned int) info
->screen_base
;
470 mask
= bytes_align
- 1;
471 offset
= (unsigned long)info
->screen_base
& mask
;
473 info
->screen_base
+= offset
;
474 info
->smem_len
= info
->smem_len
- (bytes_align
- offset
);
476 info
->smem_len
= info
->smem_len
- bytes_align
;
478 info
->screen_size
= info
->smem_len
;
480 DPRINTF("Allocated fb @ 0x%08lx, size=%d.\n",
481 info
->smem_start
, info
->smem_len
);
486 static void enable_lcdc(void)
488 struct diu
*hw
= dr
.diu_reg
;
490 DPRINTF("Entered: enable_lcdc, fb_enabled = %d\n", fb_enabled
);
492 hw
->diu_mode
= dr
.mode
;
495 DPRINTF("diu_mode = %d\n", hw
->diu_mode
);
498 static void disable_lcdc(void)
500 struct diu
*hw
= dr
.diu_reg
;
502 DPRINTF("Entered: disable_lcdc, fb_enabled = %d\n", fb_enabled
);
509 static u32
get_busfreq(void)
513 fs_busfreq
= get_bus_freq(0);
518 * Align to 64-bit(8-byte), 32-byte, etc.
520 static int allocate_buf(struct diu_addr
*buf
, u32 size
, u32 bytes_align
)
525 DPRINTF("Entered: allocate_buf\n");
526 ssize
= size
+ bytes_align
;
527 buf
->paddr
= malloc(ssize
);
531 memset(buf
->paddr
, 0, ssize
);
532 mask
= bytes_align
- 1;
533 offset
= (u32
)buf
->paddr
& mask
;
535 buf
->offset
= bytes_align
- offset
;
536 buf
->paddr
= (unsigned char *) ((u32
)buf
->paddr
+ offset
);
542 int fsl_diu_display_bmp(unsigned char *bmp
,
547 struct fb_info
*info
= &fsl_fb_info
;
548 unsigned char r
, g
, b
;
549 unsigned int *fb_t
, val
;
550 unsigned char *bitmap
;
551 unsigned int palette
[256];
552 int width
, height
, bpp
, ncolors
, raster
, offset
, x
, y
, i
, k
, cpp
;
555 printf("Must supply a bitmap address\n");
559 raster
= bmp
[10] + (bmp
[11] << 8) + (bmp
[12] << 16) + (bmp
[13] << 24);
560 width
= (bmp
[21] << 24) | (bmp
[20] << 16) | (bmp
[19] << 8) | bmp
[18];
561 height
= (bmp
[25] << 24) | (bmp
[24] << 16) | (bmp
[23] << 8) | bmp
[22];
562 bpp
= (bmp
[29] << 8) | (bmp
[28]);
563 ncolors
= bmp
[46] + (bmp
[47] << 8) + (bmp
[48] << 16) + (bmp
[49] << 24);
564 bitmap
= bmp
+ raster
;
565 cpp
= info
->var
.bits_per_pixel
/ 8;
567 DPRINTF("bmp = 0x%08x\n", (unsigned int)bmp
);
568 DPRINTF("bitmap = 0x%08x\n", (unsigned int)bitmap
);
569 DPRINTF("width = %d\n", width
);
570 DPRINTF("height = %d\n", height
);
571 DPRINTF("bpp = %d\n", bpp
);
572 DPRINTF("ncolors = %d\n", ncolors
);
574 DPRINTF("xres = %d\n", info
->var
.xres
);
575 DPRINTF("yres = %d\n", info
->var
.yres
);
576 DPRINTF("Screen_base = 0x%x\n", (unsigned int)info
->screen_base
);
578 if (((width
+xoffset
) > info
->var
.xres
) ||
579 ((height
+yoffset
) > info
->var
.yres
)) {
580 printf("bitmap is out of range, image too large or too much offset\n");
584 for (i
= 0, offset
= 54; i
< ncolors
; i
++, offset
+= 4)
585 palette
[i
] = (bmp
[offset
+2] << 16)
586 + (bmp
[offset
+1] << 8) + bmp
[offset
];
591 for (y
= height
- 1; y
>= 0; y
--) {
592 fb_t
= (unsigned int *) ((unsigned int)info
->screen_base
+ (((y
+yoffset
) * info
->var
.xres
) + xoffset
)*cpp
);
593 for (x
= 0; x
< width
; x
+= 8) {
595 for (k
= 0; k
< 8; k
++) {
603 for (i
= (width
/ 2) % 4; i
> 0; i
--)
608 for (y
= height
- 1; y
>= 0; y
--) {
609 fb_t
= (unsigned int *) ((unsigned int)info
->screen_base
+ (((y
+yoffset
) * info
->var
.xres
) + xoffset
)*cpp
);
610 for (x
= 0; x
< width
; x
+= 2) {
614 *fb_t
++ = palette
[r
];
615 *fb_t
++ = palette
[g
];
617 for (i
= (width
/ 2) % 4; i
> 0; i
--)
622 for (y
= height
- 1; y
>= 0; y
--) {
623 fb_t
= (unsigned int *) ((unsigned int)info
->screen_base
+ (((y
+yoffset
) * info
->var
.xres
) + xoffset
)*cpp
);
624 for (x
= 0; x
< width
; x
++) {
625 *fb_t
++ = palette
[ *bitmap
++ ];
627 for (i
= (width
/ 2) % 4; i
> 0; i
--)
632 for (y
= height
- 1; y
>= 0; y
--) {
633 fb_t
= (unsigned int *) ((unsigned int)info
->screen_base
+ (((y
+yoffset
) * info
->var
.xres
) + xoffset
)*cpp
);
634 for (x
= 0; x
< width
; x
++) {
638 val
= (r
<< 16) + (g
<< 8) + b
;
641 for (; (x
% 4) != 0; x
++) /* 4-byte alignment */
650 void fsl_diu_clear_screen(void)
652 struct fb_info
*info
= &fsl_fb_info
;
654 memset(info
->screen_base
, 0, info
->smem_len
);
656 #endif /* CONFIG_FSL_DIU_FB */