blob: c38e22de1f340b914575b7c2e6191596d33fc419 [file] [log] [blame]
Stefano Babic5dda7942010-10-13 12:17:14 +02001/*
2 * Porting to u-boot:
3 *
4 * (C) Copyright 2010
5 * Stefano Babic, DENX Software Engineering, sbabic@denx.de
6 *
7 * MX51 Linux framebuffer:
8 *
9 * (C) Copyright 2004-2010 Freescale Semiconductor, Inc.
10 *
11 * See file CREDITS for list of people who contributed to this
12 * project.
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 * MA 02111-1307 USA
28 */
29
Stefano Babic5dda7942010-10-13 12:17:14 +020030#include <common.h>
31#include <asm/errno.h>
32#include <linux/string.h>
33#include <linux/list.h>
34#include <linux/fb.h>
35#include <asm/io.h>
36#include <malloc.h>
Stefano Babice9934f02011-09-28 11:21:15 +020037#include <video_fb.h>
Stefano Babic5dda7942010-10-13 12:17:14 +020038#include "videomodes.h"
39#include "ipu.h"
40#include "mxcfb.h"
41
Stefano Babic5dda7942010-10-13 12:17:14 +020042static int mxcfb_map_video_memory(struct fb_info *fbi);
43static int mxcfb_unmap_video_memory(struct fb_info *fbi);
44
Stefano Babice9934f02011-09-28 11:21:15 +020045/* graphics setup */
46static GraphicDevice panel;
Marek Vasut02ae1a12011-10-06 00:25:03 +020047static struct fb_videomode *gmode;
48static uint8_t gdisp;
49static uint32_t gpixfmt;
Stefano Babic5dda7942010-10-13 12:17:14 +020050
51void fb_videomode_to_var(struct fb_var_screeninfo *var,
52 const struct fb_videomode *mode)
53{
54 var->xres = mode->xres;
55 var->yres = mode->yres;
56 var->xres_virtual = mode->xres;
57 var->yres_virtual = mode->yres;
58 var->xoffset = 0;
59 var->yoffset = 0;
60 var->pixclock = mode->pixclock;
61 var->left_margin = mode->left_margin;
62 var->right_margin = mode->right_margin;
63 var->upper_margin = mode->upper_margin;
64 var->lower_margin = mode->lower_margin;
65 var->hsync_len = mode->hsync_len;
66 var->vsync_len = mode->vsync_len;
67 var->sync = mode->sync;
68 var->vmode = mode->vmode & FB_VMODE_MASK;
69}
70
71/*
72 * Structure containing the MXC specific framebuffer information.
73 */
74struct mxcfb_info {
75 int blank;
76 ipu_channel_t ipu_ch;
77 int ipu_di;
78 u32 ipu_di_pix_fmt;
79 unsigned char overlay;
80 unsigned char alpha_chan_en;
81 dma_addr_t alpha_phy_addr0;
82 dma_addr_t alpha_phy_addr1;
83 void *alpha_virt_addr0;
84 void *alpha_virt_addr1;
85 uint32_t alpha_mem_len;
86 uint32_t cur_ipu_buf;
87 uint32_t cur_ipu_alpha_buf;
88
89 u32 pseudo_palette[16];
90};
91
92enum {
93 BOTH_ON,
94 SRC_ON,
95 TGT_ON,
96 BOTH_OFF
97};
98
99static unsigned long default_bpp = 16;
100static unsigned char g_dp_in_use;
101static struct fb_info *mxcfb_info[3];
102static int ext_clk_used;
103
104static uint32_t bpp_to_pixfmt(struct fb_info *fbi)
105{
106 uint32_t pixfmt = 0;
107
108 debug("bpp_to_pixfmt: %d\n", fbi->var.bits_per_pixel);
109
110 if (fbi->var.nonstd)
111 return fbi->var.nonstd;
112
113 switch (fbi->var.bits_per_pixel) {
114 case 24:
115 pixfmt = IPU_PIX_FMT_BGR24;
116 break;
117 case 32:
118 pixfmt = IPU_PIX_FMT_BGR32;
119 break;
120 case 16:
121 pixfmt = IPU_PIX_FMT_RGB565;
122 break;
123 }
124 return pixfmt;
125}
126
127/*
128 * Set fixed framebuffer parameters based on variable settings.
129 *
130 * @param info framebuffer information pointer
131 */
132static int mxcfb_set_fix(struct fb_info *info)
133{
134 struct fb_fix_screeninfo *fix = &info->fix;
135 struct fb_var_screeninfo *var = &info->var;
136
137 fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
138
139 fix->type = FB_TYPE_PACKED_PIXELS;
140 fix->accel = FB_ACCEL_NONE;
141 fix->visual = FB_VISUAL_TRUECOLOR;
142 fix->xpanstep = 1;
143 fix->ypanstep = 1;
144
145 return 0;
146}
147
148static int setup_disp_channel1(struct fb_info *fbi)
149{
150 ipu_channel_params_t params;
151 struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
152
153 memset(&params, 0, sizeof(params));
154 params.mem_dp_bg_sync.di = mxc_fbi->ipu_di;
155
156 debug("%s called\n", __func__);
157 /*
158 * Assuming interlaced means yuv output, below setting also
159 * valid for mem_dc_sync. FG should have the same vmode as BG.
160 */
161 if (fbi->var.vmode & FB_VMODE_INTERLACED) {
162 params.mem_dp_bg_sync.interlaced = 1;
163 params.mem_dp_bg_sync.out_pixel_fmt =
164 IPU_PIX_FMT_YUV444;
165 } else {
166 if (mxc_fbi->ipu_di_pix_fmt) {
167 params.mem_dp_bg_sync.out_pixel_fmt =
168 mxc_fbi->ipu_di_pix_fmt;
169 } else {
170 params.mem_dp_bg_sync.out_pixel_fmt =
171 IPU_PIX_FMT_RGB666;
172 }
173 }
174 params.mem_dp_bg_sync.in_pixel_fmt = bpp_to_pixfmt(fbi);
175 if (mxc_fbi->alpha_chan_en)
176 params.mem_dp_bg_sync.alpha_chan_en = 1;
177
178 ipu_init_channel(mxc_fbi->ipu_ch, &params);
179
180 return 0;
181}
182
183static int setup_disp_channel2(struct fb_info *fbi)
184{
185 int retval = 0;
186 struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
187
188 mxc_fbi->cur_ipu_buf = 1;
189 if (mxc_fbi->alpha_chan_en)
190 mxc_fbi->cur_ipu_alpha_buf = 1;
191
192 fbi->var.xoffset = fbi->var.yoffset = 0;
193
194 debug("%s: %x %d %d %d %lx %lx\n",
195 __func__,
196 mxc_fbi->ipu_ch,
197 fbi->var.xres,
198 fbi->var.yres,
199 fbi->fix.line_length,
200 fbi->fix.smem_start,
201 fbi->fix.smem_start +
202 (fbi->fix.line_length * fbi->var.yres));
203
204 retval = ipu_init_channel_buffer(mxc_fbi->ipu_ch, IPU_INPUT_BUFFER,
205 bpp_to_pixfmt(fbi),
206 fbi->var.xres, fbi->var.yres,
207 fbi->fix.line_length,
208 fbi->fix.smem_start +
209 (fbi->fix.line_length * fbi->var.yres),
210 fbi->fix.smem_start,
211 0, 0);
212 if (retval)
213 printf("ipu_init_channel_buffer error %d\n", retval);
214
215 return retval;
216}
217
218/*
219 * Set framebuffer parameters and change the operating mode.
220 *
221 * @param info framebuffer information pointer
222 */
223static int mxcfb_set_par(struct fb_info *fbi)
224{
225 int retval = 0;
226 u32 mem_len;
227 ipu_di_signal_cfg_t sig_cfg;
228 struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
229 uint32_t out_pixel_fmt;
230
231 ipu_disable_channel(mxc_fbi->ipu_ch);
232 ipu_uninit_channel(mxc_fbi->ipu_ch);
233 mxcfb_set_fix(fbi);
234
235 mem_len = fbi->var.yres_virtual * fbi->fix.line_length;
236 if (!fbi->fix.smem_start || (mem_len > fbi->fix.smem_len)) {
237 if (fbi->fix.smem_start)
238 mxcfb_unmap_video_memory(fbi);
239
240 if (mxcfb_map_video_memory(fbi) < 0)
241 return -ENOMEM;
242 }
243
244 setup_disp_channel1(fbi);
245
246 memset(&sig_cfg, 0, sizeof(sig_cfg));
247 if (fbi->var.vmode & FB_VMODE_INTERLACED) {
248 sig_cfg.interlaced = 1;
249 out_pixel_fmt = IPU_PIX_FMT_YUV444;
250 } else {
251 if (mxc_fbi->ipu_di_pix_fmt)
252 out_pixel_fmt = mxc_fbi->ipu_di_pix_fmt;
253 else
254 out_pixel_fmt = IPU_PIX_FMT_RGB666;
255 }
256 if (fbi->var.vmode & FB_VMODE_ODD_FLD_FIRST) /* PAL */
257 sig_cfg.odd_field_first = 1;
258 if ((fbi->var.sync & FB_SYNC_EXT) || ext_clk_used)
259 sig_cfg.ext_clk = 1;
260 if (fbi->var.sync & FB_SYNC_HOR_HIGH_ACT)
261 sig_cfg.Hsync_pol = 1;
262 if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT)
263 sig_cfg.Vsync_pol = 1;
264 if (!(fbi->var.sync & FB_SYNC_CLK_LAT_FALL))
265 sig_cfg.clk_pol = 1;
266 if (fbi->var.sync & FB_SYNC_DATA_INVERT)
267 sig_cfg.data_pol = 1;
268 if (!(fbi->var.sync & FB_SYNC_OE_LOW_ACT))
269 sig_cfg.enable_pol = 1;
270 if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN)
271 sig_cfg.clkidle_en = 1;
272
273 debug("pixclock = %ul Hz\n",
274 (u32) (PICOS2KHZ(fbi->var.pixclock) * 1000UL));
275
276 if (ipu_init_sync_panel(mxc_fbi->ipu_di,
277 (PICOS2KHZ(fbi->var.pixclock)) * 1000UL,
278 fbi->var.xres, fbi->var.yres,
279 out_pixel_fmt,
280 fbi->var.left_margin,
281 fbi->var.hsync_len,
282 fbi->var.right_margin,
283 fbi->var.upper_margin,
284 fbi->var.vsync_len,
285 fbi->var.lower_margin,
286 0, sig_cfg) != 0) {
287 puts("mxcfb: Error initializing panel.\n");
288 return -EINVAL;
289 }
290
291 retval = setup_disp_channel2(fbi);
292 if (retval)
293 return retval;
294
295 if (mxc_fbi->blank == FB_BLANK_UNBLANK)
296 ipu_enable_channel(mxc_fbi->ipu_ch);
297
298 return retval;
299}
300
301/*
302 * Check framebuffer variable parameters and adjust to valid values.
303 *
304 * @param var framebuffer variable parameters
305 *
306 * @param info framebuffer information pointer
307 */
308static int mxcfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
309{
310 u32 vtotal;
311 u32 htotal;
312
313 if (var->xres_virtual < var->xres)
314 var->xres_virtual = var->xres;
315 if (var->yres_virtual < var->yres)
316 var->yres_virtual = var->yres;
317
318 if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
319 (var->bits_per_pixel != 16) && (var->bits_per_pixel != 8))
320 var->bits_per_pixel = default_bpp;
321
322 switch (var->bits_per_pixel) {
323 case 8:
324 var->red.length = 3;
325 var->red.offset = 5;
326 var->red.msb_right = 0;
327
328 var->green.length = 3;
329 var->green.offset = 2;
330 var->green.msb_right = 0;
331
332 var->blue.length = 2;
333 var->blue.offset = 0;
334 var->blue.msb_right = 0;
335
336 var->transp.length = 0;
337 var->transp.offset = 0;
338 var->transp.msb_right = 0;
339 break;
340 case 16:
341 var->red.length = 5;
342 var->red.offset = 11;
343 var->red.msb_right = 0;
344
345 var->green.length = 6;
346 var->green.offset = 5;
347 var->green.msb_right = 0;
348
349 var->blue.length = 5;
350 var->blue.offset = 0;
351 var->blue.msb_right = 0;
352
353 var->transp.length = 0;
354 var->transp.offset = 0;
355 var->transp.msb_right = 0;
356 break;
357 case 24:
358 var->red.length = 8;
359 var->red.offset = 16;
360 var->red.msb_right = 0;
361
362 var->green.length = 8;
363 var->green.offset = 8;
364 var->green.msb_right = 0;
365
366 var->blue.length = 8;
367 var->blue.offset = 0;
368 var->blue.msb_right = 0;
369
370 var->transp.length = 0;
371 var->transp.offset = 0;
372 var->transp.msb_right = 0;
373 break;
374 case 32:
375 var->red.length = 8;
376 var->red.offset = 16;
377 var->red.msb_right = 0;
378
379 var->green.length = 8;
380 var->green.offset = 8;
381 var->green.msb_right = 0;
382
383 var->blue.length = 8;
384 var->blue.offset = 0;
385 var->blue.msb_right = 0;
386
387 var->transp.length = 8;
388 var->transp.offset = 24;
389 var->transp.msb_right = 0;
390 break;
391 }
392
393 if (var->pixclock < 1000) {
394 htotal = var->xres + var->right_margin + var->hsync_len +
395 var->left_margin;
396 vtotal = var->yres + var->lower_margin + var->vsync_len +
397 var->upper_margin;
398 var->pixclock = (vtotal * htotal * 6UL) / 100UL;
399 var->pixclock = KHZ2PICOS(var->pixclock);
400 printf("pixclock set for 60Hz refresh = %u ps\n",
401 var->pixclock);
402 }
403
404 var->height = -1;
405 var->width = -1;
406 var->grayscale = 0;
407
408 return 0;
409}
410
411static int mxcfb_map_video_memory(struct fb_info *fbi)
412{
413 if (fbi->fix.smem_len < fbi->var.yres_virtual * fbi->fix.line_length) {
414 fbi->fix.smem_len = fbi->var.yres_virtual *
415 fbi->fix.line_length;
416 }
417
Stefano Babice9934f02011-09-28 11:21:15 +0200418 fbi->screen_base = (char *)malloc(fbi->fix.smem_len);
419 fbi->fix.smem_start = (unsigned long)fbi->screen_base;
Stefano Babic5dda7942010-10-13 12:17:14 +0200420 if (fbi->screen_base == 0) {
421 puts("Unable to allocate framebuffer memory\n");
422 fbi->fix.smem_len = 0;
423 fbi->fix.smem_start = 0;
424 return -EBUSY;
425 }
426
427 debug("allocated fb @ paddr=0x%08X, size=%d.\n",
428 (uint32_t) fbi->fix.smem_start, fbi->fix.smem_len);
429
430 fbi->screen_size = fbi->fix.smem_len;
431
432 /* Clear the screen */
433 memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
434
435 return 0;
436}
437
438static int mxcfb_unmap_video_memory(struct fb_info *fbi)
439{
440 fbi->screen_base = 0;
441 fbi->fix.smem_start = 0;
442 fbi->fix.smem_len = 0;
443 return 0;
444}
445
446/*
447 * Initializes the framebuffer information pointer. After allocating
448 * sufficient memory for the framebuffer structure, the fields are
449 * filled with custom information passed in from the configurable
450 * structures. This includes information such as bits per pixel,
451 * color maps, screen width/height and RGBA offsets.
452 *
453 * @return Framebuffer structure initialized with our information
454 */
455static struct fb_info *mxcfb_init_fbinfo(void)
456{
457#define BYTES_PER_LONG 4
458#define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG))
459 struct fb_info *fbi;
460 struct mxcfb_info *mxcfbi;
461 char *p;
462 int size = sizeof(struct mxcfb_info) + PADDING +
463 sizeof(struct fb_info);
464
465 debug("%s: %d %d %d %d\n",
466 __func__,
467 PADDING,
468 size,
469 sizeof(struct mxcfb_info),
470 sizeof(struct fb_info));
471 /*
472 * Allocate sufficient memory for the fb structure
473 */
474
475 p = malloc(size);
476 if (!p)
477 return NULL;
478
479 memset(p, 0, size);
480
481 fbi = (struct fb_info *)p;
482 fbi->par = p + sizeof(struct fb_info) + PADDING;
483
484 mxcfbi = (struct mxcfb_info *)fbi->par;
485 debug("Framebuffer structures at: fbi=0x%x mxcfbi=0x%x\n",
486 (unsigned int)fbi, (unsigned int)mxcfbi);
487
488 fbi->var.activate = FB_ACTIVATE_NOW;
489
490 fbi->flags = FBINFO_FLAG_DEFAULT;
491 fbi->pseudo_palette = mxcfbi->pseudo_palette;
492
493 return fbi;
494}
495
496/*
497 * Probe routine for the framebuffer driver. It is called during the
498 * driver binding process. The following functions are performed in
499 * this routine: Framebuffer initialization, Memory allocation and
500 * mapping, Framebuffer registration, IPU initialization.
501 *
502 * @return Appropriate error code to the kernel common code
503 */
Marek Vasut02ae1a12011-10-06 00:25:03 +0200504static int mxcfb_probe(u32 interface_pix_fmt, uint8_t disp,
505 struct fb_videomode *mode)
Stefano Babic5dda7942010-10-13 12:17:14 +0200506{
507 struct fb_info *fbi;
508 struct mxcfb_info *mxcfbi;
509 int ret = 0;
510
511 /*
512 * Initialize FB structures
513 */
514 fbi = mxcfb_init_fbinfo();
515 if (!fbi) {
516 ret = -ENOMEM;
517 goto err0;
518 }
519 mxcfbi = (struct mxcfb_info *)fbi->par;
520
521 if (!g_dp_in_use) {
522 mxcfbi->ipu_ch = MEM_BG_SYNC;
523 mxcfbi->blank = FB_BLANK_UNBLANK;
524 } else {
525 mxcfbi->ipu_ch = MEM_DC_SYNC;
526 mxcfbi->blank = FB_BLANK_POWERDOWN;
527 }
528
Marek Vasut02ae1a12011-10-06 00:25:03 +0200529 mxcfbi->ipu_di = disp;
Stefano Babic5dda7942010-10-13 12:17:14 +0200530
531 ipu_disp_set_global_alpha(mxcfbi->ipu_ch, 1, 0x80);
532 ipu_disp_set_color_key(mxcfbi->ipu_ch, 0, 0);
533 strcpy(fbi->fix.id, "DISP3 BG");
534
535 g_dp_in_use = 1;
536
537 mxcfb_info[mxcfbi->ipu_di] = fbi;
538
539 /* Need dummy values until real panel is configured */
Stefano Babic5dda7942010-10-13 12:17:14 +0200540
541 mxcfbi->ipu_di_pix_fmt = interface_pix_fmt;
542 fb_videomode_to_var(&fbi->var, mode);
Stefano Babice9934f02011-09-28 11:21:15 +0200543 fbi->var.bits_per_pixel = 16;
544 fbi->fix.line_length = fbi->var.xres * (fbi->var.bits_per_pixel / 8);
545 fbi->fix.smem_len = fbi->var.yres_virtual * fbi->fix.line_length;
Stefano Babic5dda7942010-10-13 12:17:14 +0200546
547 mxcfb_check_var(&fbi->var, fbi);
548
549 /* Default Y virtual size is 2x panel size */
550 fbi->var.yres_virtual = fbi->var.yres * 2;
551
552 mxcfb_set_fix(fbi);
553
554 /* alocate fb first */
555 if (mxcfb_map_video_memory(fbi) < 0)
556 return -ENOMEM;
557
558 mxcfb_set_par(fbi);
559
Stefano Babice9934f02011-09-28 11:21:15 +0200560 panel.winSizeX = mode->xres;
561 panel.winSizeY = mode->yres;
562 panel.plnSizeX = mode->xres;
563 panel.plnSizeY = mode->yres;
Stefano Babic5dda7942010-10-13 12:17:14 +0200564
Stefano Babice9934f02011-09-28 11:21:15 +0200565 panel.frameAdrs = (u32)fbi->screen_base;
566 panel.memSize = fbi->screen_size;
Stefano Babic5dda7942010-10-13 12:17:14 +0200567
Stefano Babice9934f02011-09-28 11:21:15 +0200568 panel.gdfBytesPP = 2;
569 panel.gdfIndex = GDF_16BIT_565RGB;
Stefano Babic5dda7942010-10-13 12:17:14 +0200570
571 ipu_dump_registers();
572
573 return 0;
574
575err0:
576 return ret;
577}
578
Stefano Babice9934f02011-09-28 11:21:15 +0200579void *video_hw_init(void)
Stefano Babic5dda7942010-10-13 12:17:14 +0200580{
581 int ret;
582
583 ret = ipu_probe();
584 if (ret)
585 puts("Error initializing IPU\n");
586
Marek Vasut02ae1a12011-10-06 00:25:03 +0200587 ret = mxcfb_probe(gpixfmt, gdisp, gmode);
Stefano Babice9934f02011-09-28 11:21:15 +0200588 debug("Framebuffer at 0x%x\n", (unsigned int)panel.frameAdrs);
Stefano Babic5dda7942010-10-13 12:17:14 +0200589
Stefano Babice9934f02011-09-28 11:21:15 +0200590 return (void *)&panel;
591}
Stefano Babic5dda7942010-10-13 12:17:14 +0200592
Stefano Babice9934f02011-09-28 11:21:15 +0200593void video_set_lut(unsigned int index, /* color number */
594 unsigned char r, /* red */
595 unsigned char g, /* green */
596 unsigned char b /* blue */
597 )
598{
599 return;
600}
601
Fabio Estevama1b0e192012-05-10 15:07:34 +0000602int ipuv3_fb_init(struct fb_videomode *mode, uint8_t disp, uint32_t pixfmt)
Stefano Babice9934f02011-09-28 11:21:15 +0200603{
604 gmode = mode;
Marek Vasut02ae1a12011-10-06 00:25:03 +0200605 gdisp = disp;
606 gpixfmt = pixfmt;
Stefano Babice9934f02011-09-28 11:21:15 +0200607
608 return 0;
Stefano Babic5dda7942010-10-13 12:17:14 +0200609}