drivers:video:s6e8ax0: change data_to_send array to static
[oweals/u-boot.git] / drivers / video / mxc_ipuv3_fb.c
1 /*
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
30 #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>
37 #include <video_fb.h>
38 #include "videomodes.h"
39 #include "ipu.h"
40 #include "mxcfb.h"
41 #include "ipu_regs.h"
42
43 static int mxcfb_map_video_memory(struct fb_info *fbi);
44 static int mxcfb_unmap_video_memory(struct fb_info *fbi);
45
46 /* graphics setup */
47 static GraphicDevice panel;
48 static struct fb_videomode const *gmode;
49 static uint8_t gdisp;
50 static uint32_t gpixfmt;
51
52 void fb_videomode_to_var(struct fb_var_screeninfo *var,
53                          const struct fb_videomode *mode)
54 {
55         var->xres = mode->xres;
56         var->yres = mode->yres;
57         var->xres_virtual = mode->xres;
58         var->yres_virtual = mode->yres;
59         var->xoffset = 0;
60         var->yoffset = 0;
61         var->pixclock = mode->pixclock;
62         var->left_margin = mode->left_margin;
63         var->right_margin = mode->right_margin;
64         var->upper_margin = mode->upper_margin;
65         var->lower_margin = mode->lower_margin;
66         var->hsync_len = mode->hsync_len;
67         var->vsync_len = mode->vsync_len;
68         var->sync = mode->sync;
69         var->vmode = mode->vmode & FB_VMODE_MASK;
70 }
71
72 /*
73  * Structure containing the MXC specific framebuffer information.
74  */
75 struct mxcfb_info {
76         int blank;
77         ipu_channel_t ipu_ch;
78         int ipu_di;
79         u32 ipu_di_pix_fmt;
80         unsigned char overlay;
81         unsigned char alpha_chan_en;
82         dma_addr_t alpha_phy_addr0;
83         dma_addr_t alpha_phy_addr1;
84         void *alpha_virt_addr0;
85         void *alpha_virt_addr1;
86         uint32_t alpha_mem_len;
87         uint32_t cur_ipu_buf;
88         uint32_t cur_ipu_alpha_buf;
89
90         u32 pseudo_palette[16];
91 };
92
93 enum {
94         BOTH_ON,
95         SRC_ON,
96         TGT_ON,
97         BOTH_OFF
98 };
99
100 static unsigned long default_bpp = 16;
101 static unsigned char g_dp_in_use;
102 static struct fb_info *mxcfb_info[3];
103 static int ext_clk_used;
104
105 static uint32_t bpp_to_pixfmt(struct fb_info *fbi)
106 {
107         uint32_t pixfmt = 0;
108
109         debug("bpp_to_pixfmt: %d\n", fbi->var.bits_per_pixel);
110
111         if (fbi->var.nonstd)
112                 return fbi->var.nonstd;
113
114         switch (fbi->var.bits_per_pixel) {
115         case 24:
116                 pixfmt = IPU_PIX_FMT_BGR24;
117                 break;
118         case 32:
119                 pixfmt = IPU_PIX_FMT_BGR32;
120                 break;
121         case 16:
122                 pixfmt = IPU_PIX_FMT_RGB565;
123                 break;
124         }
125         return pixfmt;
126 }
127
128 /*
129  * Set fixed framebuffer parameters based on variable settings.
130  *
131  * @param       info     framebuffer information pointer
132  */
133 static int mxcfb_set_fix(struct fb_info *info)
134 {
135         struct fb_fix_screeninfo *fix = &info->fix;
136         struct fb_var_screeninfo *var = &info->var;
137
138         fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
139
140         fix->type = FB_TYPE_PACKED_PIXELS;
141         fix->accel = FB_ACCEL_NONE;
142         fix->visual = FB_VISUAL_TRUECOLOR;
143         fix->xpanstep = 1;
144         fix->ypanstep = 1;
145
146         return 0;
147 }
148
149 static int setup_disp_channel1(struct fb_info *fbi)
150 {
151         ipu_channel_params_t params;
152         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
153
154         memset(&params, 0, sizeof(params));
155         params.mem_dp_bg_sync.di = mxc_fbi->ipu_di;
156
157         debug("%s called\n", __func__);
158         /*
159          * Assuming interlaced means yuv output, below setting also
160          * valid for mem_dc_sync. FG should have the same vmode as BG.
161          */
162         if (fbi->var.vmode & FB_VMODE_INTERLACED) {
163                 params.mem_dp_bg_sync.interlaced = 1;
164                 params.mem_dp_bg_sync.out_pixel_fmt =
165                         IPU_PIX_FMT_YUV444;
166         } else {
167                 if (mxc_fbi->ipu_di_pix_fmt) {
168                         params.mem_dp_bg_sync.out_pixel_fmt =
169                                 mxc_fbi->ipu_di_pix_fmt;
170                 } else {
171                         params.mem_dp_bg_sync.out_pixel_fmt =
172                                 IPU_PIX_FMT_RGB666;
173                 }
174         }
175         params.mem_dp_bg_sync.in_pixel_fmt = bpp_to_pixfmt(fbi);
176         if (mxc_fbi->alpha_chan_en)
177                 params.mem_dp_bg_sync.alpha_chan_en = 1;
178
179         ipu_init_channel(mxc_fbi->ipu_ch, &params);
180
181         return 0;
182 }
183
184 static int setup_disp_channel2(struct fb_info *fbi)
185 {
186         int retval = 0;
187         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
188
189         mxc_fbi->cur_ipu_buf = 1;
190         if (mxc_fbi->alpha_chan_en)
191                 mxc_fbi->cur_ipu_alpha_buf = 1;
192
193         fbi->var.xoffset = fbi->var.yoffset = 0;
194
195         debug("%s: %x %d %d %d %lx %lx\n",
196                 __func__,
197                 mxc_fbi->ipu_ch,
198                 fbi->var.xres,
199                 fbi->var.yres,
200                 fbi->fix.line_length,
201                 fbi->fix.smem_start,
202                 fbi->fix.smem_start +
203                 (fbi->fix.line_length * fbi->var.yres));
204
205         retval = ipu_init_channel_buffer(mxc_fbi->ipu_ch, IPU_INPUT_BUFFER,
206                                          bpp_to_pixfmt(fbi),
207                                          fbi->var.xres, fbi->var.yres,
208                                          fbi->fix.line_length,
209                                          fbi->fix.smem_start +
210                                          (fbi->fix.line_length * fbi->var.yres),
211                                          fbi->fix.smem_start,
212                                          0, 0);
213         if (retval)
214                 printf("ipu_init_channel_buffer error %d\n", retval);
215
216         return retval;
217 }
218
219 /*
220  * Set framebuffer parameters and change the operating mode.
221  *
222  * @param       info     framebuffer information pointer
223  */
224 static int mxcfb_set_par(struct fb_info *fbi)
225 {
226         int retval = 0;
227         u32 mem_len;
228         ipu_di_signal_cfg_t sig_cfg;
229         struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
230         uint32_t out_pixel_fmt;
231
232         ipu_disable_channel(mxc_fbi->ipu_ch);
233         ipu_uninit_channel(mxc_fbi->ipu_ch);
234         mxcfb_set_fix(fbi);
235
236         mem_len = fbi->var.yres_virtual * fbi->fix.line_length;
237         if (!fbi->fix.smem_start || (mem_len > fbi->fix.smem_len)) {
238                 if (fbi->fix.smem_start)
239                         mxcfb_unmap_video_memory(fbi);
240
241                 if (mxcfb_map_video_memory(fbi) < 0)
242                         return -ENOMEM;
243         }
244
245         setup_disp_channel1(fbi);
246
247         memset(&sig_cfg, 0, sizeof(sig_cfg));
248         if (fbi->var.vmode & FB_VMODE_INTERLACED) {
249                 sig_cfg.interlaced = 1;
250                 out_pixel_fmt = IPU_PIX_FMT_YUV444;
251         } else {
252                 if (mxc_fbi->ipu_di_pix_fmt)
253                         out_pixel_fmt = mxc_fbi->ipu_di_pix_fmt;
254                 else
255                         out_pixel_fmt = IPU_PIX_FMT_RGB666;
256         }
257         if (fbi->var.vmode & FB_VMODE_ODD_FLD_FIRST) /* PAL */
258                 sig_cfg.odd_field_first = 1;
259         if ((fbi->var.sync & FB_SYNC_EXT) || ext_clk_used)
260                 sig_cfg.ext_clk = 1;
261         if (fbi->var.sync & FB_SYNC_HOR_HIGH_ACT)
262                 sig_cfg.Hsync_pol = 1;
263         if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT)
264                 sig_cfg.Vsync_pol = 1;
265         if (!(fbi->var.sync & FB_SYNC_CLK_LAT_FALL))
266                 sig_cfg.clk_pol = 1;
267         if (fbi->var.sync & FB_SYNC_DATA_INVERT)
268                 sig_cfg.data_pol = 1;
269         if (!(fbi->var.sync & FB_SYNC_OE_LOW_ACT))
270                 sig_cfg.enable_pol = 1;
271         if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN)
272                 sig_cfg.clkidle_en = 1;
273
274         debug("pixclock = %ul Hz\n",
275                 (u32) (PICOS2KHZ(fbi->var.pixclock) * 1000UL));
276
277         if (ipu_init_sync_panel(mxc_fbi->ipu_di,
278                                 (PICOS2KHZ(fbi->var.pixclock)) * 1000UL,
279                                 fbi->var.xres, fbi->var.yres,
280                                 out_pixel_fmt,
281                                 fbi->var.left_margin,
282                                 fbi->var.hsync_len,
283                                 fbi->var.right_margin,
284                                 fbi->var.upper_margin,
285                                 fbi->var.vsync_len,
286                                 fbi->var.lower_margin,
287                                 0, sig_cfg) != 0) {
288                 puts("mxcfb: Error initializing panel.\n");
289                 return -EINVAL;
290         }
291
292         retval = setup_disp_channel2(fbi);
293         if (retval)
294                 return retval;
295
296         if (mxc_fbi->blank == FB_BLANK_UNBLANK)
297                 ipu_enable_channel(mxc_fbi->ipu_ch);
298
299         return retval;
300 }
301
302 /*
303  * Check framebuffer variable parameters and adjust to valid values.
304  *
305  * @param       var      framebuffer variable parameters
306  *
307  * @param       info     framebuffer information pointer
308  */
309 static int mxcfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
310 {
311         u32 vtotal;
312         u32 htotal;
313
314         if (var->xres_virtual < var->xres)
315                 var->xres_virtual = var->xres;
316         if (var->yres_virtual < var->yres)
317                 var->yres_virtual = var->yres;
318
319         if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
320             (var->bits_per_pixel != 16) && (var->bits_per_pixel != 8))
321                 var->bits_per_pixel = default_bpp;
322
323         switch (var->bits_per_pixel) {
324         case 8:
325                 var->red.length = 3;
326                 var->red.offset = 5;
327                 var->red.msb_right = 0;
328
329                 var->green.length = 3;
330                 var->green.offset = 2;
331                 var->green.msb_right = 0;
332
333                 var->blue.length = 2;
334                 var->blue.offset = 0;
335                 var->blue.msb_right = 0;
336
337                 var->transp.length = 0;
338                 var->transp.offset = 0;
339                 var->transp.msb_right = 0;
340                 break;
341         case 16:
342                 var->red.length = 5;
343                 var->red.offset = 11;
344                 var->red.msb_right = 0;
345
346                 var->green.length = 6;
347                 var->green.offset = 5;
348                 var->green.msb_right = 0;
349
350                 var->blue.length = 5;
351                 var->blue.offset = 0;
352                 var->blue.msb_right = 0;
353
354                 var->transp.length = 0;
355                 var->transp.offset = 0;
356                 var->transp.msb_right = 0;
357                 break;
358         case 24:
359                 var->red.length = 8;
360                 var->red.offset = 16;
361                 var->red.msb_right = 0;
362
363                 var->green.length = 8;
364                 var->green.offset = 8;
365                 var->green.msb_right = 0;
366
367                 var->blue.length = 8;
368                 var->blue.offset = 0;
369                 var->blue.msb_right = 0;
370
371                 var->transp.length = 0;
372                 var->transp.offset = 0;
373                 var->transp.msb_right = 0;
374                 break;
375         case 32:
376                 var->red.length = 8;
377                 var->red.offset = 16;
378                 var->red.msb_right = 0;
379
380                 var->green.length = 8;
381                 var->green.offset = 8;
382                 var->green.msb_right = 0;
383
384                 var->blue.length = 8;
385                 var->blue.offset = 0;
386                 var->blue.msb_right = 0;
387
388                 var->transp.length = 8;
389                 var->transp.offset = 24;
390                 var->transp.msb_right = 0;
391                 break;
392         }
393
394         if (var->pixclock < 1000) {
395                 htotal = var->xres + var->right_margin + var->hsync_len +
396                     var->left_margin;
397                 vtotal = var->yres + var->lower_margin + var->vsync_len +
398                     var->upper_margin;
399                 var->pixclock = (vtotal * htotal * 6UL) / 100UL;
400                 var->pixclock = KHZ2PICOS(var->pixclock);
401                 printf("pixclock set for 60Hz refresh = %u ps\n",
402                         var->pixclock);
403         }
404
405         var->height = -1;
406         var->width = -1;
407         var->grayscale = 0;
408
409         return 0;
410 }
411
412 static int mxcfb_map_video_memory(struct fb_info *fbi)
413 {
414         if (fbi->fix.smem_len < fbi->var.yres_virtual * fbi->fix.line_length) {
415                 fbi->fix.smem_len = fbi->var.yres_virtual *
416                                     fbi->fix.line_length;
417         }
418
419         fbi->screen_base = (char *)malloc(fbi->fix.smem_len);
420         fbi->fix.smem_start = (unsigned long)fbi->screen_base;
421         if (fbi->screen_base == 0) {
422                 puts("Unable to allocate framebuffer memory\n");
423                 fbi->fix.smem_len = 0;
424                 fbi->fix.smem_start = 0;
425                 return -EBUSY;
426         }
427
428         debug("allocated fb @ paddr=0x%08X, size=%d.\n",
429                 (uint32_t) fbi->fix.smem_start, fbi->fix.smem_len);
430
431         fbi->screen_size = fbi->fix.smem_len;
432
433         /* Clear the screen */
434         memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
435
436         return 0;
437 }
438
439 static int mxcfb_unmap_video_memory(struct fb_info *fbi)
440 {
441         fbi->screen_base = 0;
442         fbi->fix.smem_start = 0;
443         fbi->fix.smem_len = 0;
444         return 0;
445 }
446
447 /*
448  * Initializes the framebuffer information pointer. After allocating
449  * sufficient memory for the framebuffer structure, the fields are
450  * filled with custom information passed in from the configurable
451  * structures.  This includes information such as bits per pixel,
452  * color maps, screen width/height and RGBA offsets.
453  *
454  * @return      Framebuffer structure initialized with our information
455  */
456 static struct fb_info *mxcfb_init_fbinfo(void)
457 {
458 #define BYTES_PER_LONG 4
459 #define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG))
460         struct fb_info *fbi;
461         struct mxcfb_info *mxcfbi;
462         char *p;
463         int size = sizeof(struct mxcfb_info) + PADDING +
464                 sizeof(struct fb_info);
465
466         debug("%s: %d %d %d %d\n",
467                 __func__,
468                 PADDING,
469                 size,
470                 sizeof(struct mxcfb_info),
471                 sizeof(struct fb_info));
472         /*
473          * Allocate sufficient memory for the fb structure
474          */
475
476         p = malloc(size);
477         if (!p)
478                 return NULL;
479
480         memset(p, 0, size);
481
482         fbi = (struct fb_info *)p;
483         fbi->par = p + sizeof(struct fb_info) + PADDING;
484
485         mxcfbi = (struct mxcfb_info *)fbi->par;
486         debug("Framebuffer structures at: fbi=0x%x mxcfbi=0x%x\n",
487                 (unsigned int)fbi, (unsigned int)mxcfbi);
488
489         fbi->var.activate = FB_ACTIVATE_NOW;
490
491         fbi->flags = FBINFO_FLAG_DEFAULT;
492         fbi->pseudo_palette = mxcfbi->pseudo_palette;
493
494         return fbi;
495 }
496
497 /*
498  * Probe routine for the framebuffer driver. It is called during the
499  * driver binding process.      The following functions are performed in
500  * this routine: Framebuffer initialization, Memory allocation and
501  * mapping, Framebuffer registration, IPU initialization.
502  *
503  * @return      Appropriate error code to the kernel common code
504  */
505 static int mxcfb_probe(u32 interface_pix_fmt, uint8_t disp,
506                         struct fb_videomode const *mode)
507 {
508         struct fb_info *fbi;
509         struct mxcfb_info *mxcfbi;
510         int ret = 0;
511
512         /*
513          * Initialize FB structures
514          */
515         fbi = mxcfb_init_fbinfo();
516         if (!fbi) {
517                 ret = -ENOMEM;
518                 goto err0;
519         }
520         mxcfbi = (struct mxcfb_info *)fbi->par;
521
522         if (!g_dp_in_use) {
523                 mxcfbi->ipu_ch = MEM_BG_SYNC;
524                 mxcfbi->blank = FB_BLANK_UNBLANK;
525         } else {
526                 mxcfbi->ipu_ch = MEM_DC_SYNC;
527                 mxcfbi->blank = FB_BLANK_POWERDOWN;
528         }
529
530         mxcfbi->ipu_di = disp;
531
532         ipu_disp_set_global_alpha(mxcfbi->ipu_ch, 1, 0x80);
533         ipu_disp_set_color_key(mxcfbi->ipu_ch, 0, 0);
534         strcpy(fbi->fix.id, "DISP3 BG");
535
536         g_dp_in_use = 1;
537
538         mxcfb_info[mxcfbi->ipu_di] = fbi;
539
540         /* Need dummy values until real panel is configured */
541
542         mxcfbi->ipu_di_pix_fmt = interface_pix_fmt;
543         fb_videomode_to_var(&fbi->var, mode);
544         fbi->var.bits_per_pixel = 16;
545         fbi->fix.line_length = fbi->var.xres * (fbi->var.bits_per_pixel / 8);
546         fbi->fix.smem_len = fbi->var.yres_virtual * fbi->fix.line_length;
547
548         mxcfb_check_var(&fbi->var, fbi);
549
550         /* Default Y virtual size is 2x panel size */
551         fbi->var.yres_virtual = fbi->var.yres * 2;
552
553         mxcfb_set_fix(fbi);
554
555         /* alocate fb first */
556         if (mxcfb_map_video_memory(fbi) < 0)
557                 return -ENOMEM;
558
559         mxcfb_set_par(fbi);
560
561         panel.winSizeX = mode->xres;
562         panel.winSizeY = mode->yres;
563         panel.plnSizeX = mode->xres;
564         panel.plnSizeY = mode->yres;
565
566         panel.frameAdrs = (u32)fbi->screen_base;
567         panel.memSize = fbi->screen_size;
568
569         panel.gdfBytesPP = 2;
570         panel.gdfIndex = GDF_16BIT_565RGB;
571
572         ipu_dump_registers();
573
574         return 0;
575
576 err0:
577         return ret;
578 }
579
580 void ipuv3_fb_shutdown(void)
581 {
582         int i;
583         struct ipu_stat *stat = (struct ipu_stat *)IPU_STAT;
584
585         for (i = 0; i < ARRAY_SIZE(mxcfb_info); i++) {
586                 struct fb_info *fbi = mxcfb_info[i];
587                 if (fbi) {
588                         struct mxcfb_info *mxc_fbi = fbi->par;
589                         ipu_disable_channel(mxc_fbi->ipu_ch);
590                         ipu_uninit_channel(mxc_fbi->ipu_ch);
591                 }
592         }
593         for (i = 0; i < ARRAY_SIZE(stat->int_stat); i++) {
594                 __raw_writel(__raw_readl(&stat->int_stat[i]),
595                              &stat->int_stat[i]);
596         }
597 }
598
599 void *video_hw_init(void)
600 {
601         int ret;
602
603         ret = ipu_probe();
604         if (ret)
605                 puts("Error initializing IPU\n");
606
607         ret = mxcfb_probe(gpixfmt, gdisp, gmode);
608         debug("Framebuffer at 0x%x\n", (unsigned int)panel.frameAdrs);
609
610         return (void *)&panel;
611 }
612
613 void video_set_lut(unsigned int index, /* color number */
614                         unsigned char r,    /* red */
615                         unsigned char g,    /* green */
616                         unsigned char b     /* blue */
617                         )
618 {
619         return;
620 }
621
622 int ipuv3_fb_init(struct fb_videomode const *mode,
623                   uint8_t disp,
624                   uint32_t pixfmt)
625 {
626         gmode = mode;
627         gdisp = disp;
628         gpixfmt = pixfmt;
629
630         return 0;
631 }