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WIP FPC-III support
[linux/fpc-iii.git] / drivers / staging / sm750fb / sm750.c
blob029f0d09e9668ad140def6a35e4c6268a1520f8b
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/kernel.h>
3 #include <linux/module.h>
4 #include <linux/errno.h>
5 #include <linux/string.h>
6 #include <linux/mm.h>
7 #include <linux/slab.h>
8 #include <linux/delay.h>
9 #include <linux/fb.h>
10 #include <linux/ioport.h>
11 #include <linux/init.h>
12 #include <linux/pci.h>
13 #include <linux/mm_types.h>
14 #include <linux/vmalloc.h>
15 #include <linux/pagemap.h>
16 #include <linux/screen_info.h>
17 #include <linux/console.h>
18 #include <asm/fb.h>
19 #include "sm750.h"
20 #include "sm750_accel.h"
21 #include "sm750_cursor.h"
22
23 /*
24 * #ifdef __BIG_ENDIAN
25 * ssize_t lynxfb_ops_write(struct fb_info *info, const char __user *buf,
26 * size_t count, loff_t *ppos);
27 * ssize_t lynxfb_ops_read(struct fb_info *info, char __user *buf,
28 * size_t count, loff_t *ppos);
29 * #endif
30 */
31
32 /* common var for all device */
33 static int g_hwcursor = 1;
34 static int g_noaccel;
35 static int g_nomtrr;
36 static const char *g_fbmode[] = {NULL, NULL};
37 static const char *g_def_fbmode = "1024x768-32@60";
38 static char *g_settings;
39 static int g_dualview;
40 static char *g_option;
41
42 static const struct fb_videomode lynx750_ext[] = {
43 /* 1024x600-60 VESA [1.71:1] */
44 {NULL, 60, 1024, 600, 20423, 144, 40, 18, 1, 104, 3,
45 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
46 FB_VMODE_NONINTERLACED},
47
48 /* 1024x600-70 VESA */
49 {NULL, 70, 1024, 600, 17211, 152, 48, 21, 1, 104, 3,
50 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
51 FB_VMODE_NONINTERLACED},
52
53 /* 1024x600-75 VESA */
54 {NULL, 75, 1024, 600, 15822, 160, 56, 23, 1, 104, 3,
55 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
56 FB_VMODE_NONINTERLACED},
57
58 /* 1024x600-85 VESA */
59 {NULL, 85, 1024, 600, 13730, 168, 56, 26, 1, 112, 3,
60 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
61 FB_VMODE_NONINTERLACED},
62
63 /* 720x480 */
64 {NULL, 60, 720, 480, 37427, 88, 16, 13, 1, 72, 3,
65 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
66 FB_VMODE_NONINTERLACED},
67
68 /* 1280x720 [1.78:1] */
69 {NULL, 60, 1280, 720, 13426, 162, 86, 22, 1, 136, 3,
70 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
71 FB_VMODE_NONINTERLACED},
72
73 /* 1280x768@60 */
74 {NULL, 60, 1280, 768, 12579, 192, 64, 20, 3, 128, 7,
75 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
76 FB_VMODE_NONINTERLACED},
77
78 /* 1360 x 768 [1.77083:1] */
79 {NULL, 60, 1360, 768, 11804, 208, 64, 23, 1, 144, 3,
80 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
81 FB_VMODE_NONINTERLACED},
82
83 /* 1368 x 768 [1.78:1] */
84 {NULL, 60, 1368, 768, 11647, 216, 72, 23, 1, 144, 3,
85 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
86 FB_VMODE_NONINTERLACED},
87
88 /* 1440 x 900 [16:10] */
89 {NULL, 60, 1440, 900, 9392, 232, 80, 28, 1, 152, 3,
90 FB_SYNC_VERT_HIGH_ACT,
91 FB_VMODE_NONINTERLACED},
92
93 /* 1440x960 [15:10] */
94 {NULL, 60, 1440, 960, 8733, 240, 88, 30, 1, 152, 3,
95 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
96 FB_VMODE_NONINTERLACED},
97
98 /* 1920x1080 [16:9] */
99 {NULL, 60, 1920, 1080, 6734, 148, 88, 41, 1, 44, 3,
100 FB_SYNC_VERT_HIGH_ACT,
101 FB_VMODE_NONINTERLACED},
102 };
103
104 /* no hardware cursor supported under version 2.6.10, kernel bug */
105 static int lynxfb_ops_cursor(struct fb_info *info, struct fb_cursor *fbcursor)
106 {
107 struct lynxfb_par *par;
108 struct lynxfb_crtc *crtc;
109 struct lynx_cursor *cursor;
110
111 par = info->par;
112 crtc = &par->crtc;
113 cursor = &crtc->cursor;
114
115 if (fbcursor->image.width > cursor->maxW ||
116 fbcursor->image.height > cursor->maxH ||
117 fbcursor->image.depth > 1) {
118 return -ENXIO;
119 }
120
121 sm750_hw_cursor_disable(cursor);
122 if (fbcursor->set & FB_CUR_SETSIZE)
123 sm750_hw_cursor_setSize(cursor,
124 fbcursor->image.width,
125 fbcursor->image.height);
126
127 if (fbcursor->set & FB_CUR_SETPOS)
128 sm750_hw_cursor_setPos(cursor,
129 fbcursor->image.dx - info->var.xoffset,
130 fbcursor->image.dy - info->var.yoffset);
131
132 if (fbcursor->set & FB_CUR_SETCMAP) {
133 /* get the 16bit color of kernel means */
134 u16 fg, bg;
135
136 fg = ((info->cmap.red[fbcursor->image.fg_color] & 0xf800)) |
137 ((info->cmap.green[fbcursor->image.fg_color] & 0xfc00) >> 5) |
138 ((info->cmap.blue[fbcursor->image.fg_color] & 0xf800) >> 11);
139
140 bg = ((info->cmap.red[fbcursor->image.bg_color] & 0xf800)) |
141 ((info->cmap.green[fbcursor->image.bg_color] & 0xfc00) >> 5) |
142 ((info->cmap.blue[fbcursor->image.bg_color] & 0xf800) >> 11);
143
144 sm750_hw_cursor_setColor(cursor, fg, bg);
145 }
146
147 if (fbcursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
148 sm750_hw_cursor_setData(cursor,
149 fbcursor->rop,
150 fbcursor->image.data,
151 fbcursor->mask);
152 }
153
154 if (fbcursor->enable)
155 sm750_hw_cursor_enable(cursor);
156
157 return 0;
158 }
159
160 static void lynxfb_ops_fillrect(struct fb_info *info,
161 const struct fb_fillrect *region)
162 {
163 struct lynxfb_par *par;
164 struct sm750_dev *sm750_dev;
165 unsigned int base, pitch, Bpp, rop;
166 u32 color;
167
168 if (info->state != FBINFO_STATE_RUNNING)
169 return;
170
171 par = info->par;
172 sm750_dev = par->dev;
173
174 /*
175 * each time 2d function begin to work,below three variable always need
176 * be set, seems we can put them together in some place
177 */
178 base = par->crtc.oScreen;
179 pitch = info->fix.line_length;
180 Bpp = info->var.bits_per_pixel >> 3;
181
182 color = (Bpp == 1) ? region->color :
183 ((u32 *)info->pseudo_palette)[region->color];
184 rop = (region->rop != ROP_COPY) ? HW_ROP2_XOR : HW_ROP2_COPY;
185
186 /*
187 * If not use spin_lock, system will die if user load driver
188 * and immediately unload driver frequently (dual)
189 * since they fb_count could change during the lifetime of
190 * this lock, we are holding it for all cases.
191 */
192 spin_lock(&sm750_dev->slock);
193
194 sm750_dev->accel.de_fillrect(&sm750_dev->accel,
195 base, pitch, Bpp,
196 region->dx, region->dy,
197 region->width, region->height,
198 color, rop);
199 spin_unlock(&sm750_dev->slock);
200 }
201
202 static void lynxfb_ops_copyarea(struct fb_info *info,
203 const struct fb_copyarea *region)
204 {
205 struct lynxfb_par *par;
206 struct sm750_dev *sm750_dev;
207 unsigned int base, pitch, Bpp;
208
209 par = info->par;
210 sm750_dev = par->dev;
211
212 /*
213 * each time 2d function begin to work,below three variable always need
214 * be set, seems we can put them together in some place
215 */
216 base = par->crtc.oScreen;
217 pitch = info->fix.line_length;
218 Bpp = info->var.bits_per_pixel >> 3;
219
220 /*
221 * If not use spin_lock, system will die if user load driver
222 * and immediately unload driver frequently (dual)
223 * since they fb_count could change during the lifetime of
224 * this lock, we are holding it for all cases.
225 */
226 spin_lock(&sm750_dev->slock);
227
228 sm750_dev->accel.de_copyarea(&sm750_dev->accel,
229 base, pitch, region->sx, region->sy,
230 base, pitch, Bpp, region->dx, region->dy,
231 region->width, region->height,
232 HW_ROP2_COPY);
233 spin_unlock(&sm750_dev->slock);
234 }
235
236 static void lynxfb_ops_imageblit(struct fb_info *info,
237 const struct fb_image *image)
238 {
239 unsigned int base, pitch, Bpp;
240 unsigned int fgcol, bgcol;
241 struct lynxfb_par *par;
242 struct sm750_dev *sm750_dev;
243
244 par = info->par;
245 sm750_dev = par->dev;
246 /*
247 * each time 2d function begin to work,below three variable always need
248 * be set, seems we can put them together in some place
249 */
250 base = par->crtc.oScreen;
251 pitch = info->fix.line_length;
252 Bpp = info->var.bits_per_pixel >> 3;
253
254 /* TODO: Implement hardware acceleration for image->depth > 1 */
255 if (image->depth != 1) {
256 cfb_imageblit(info, image);
257 return;
258 }
259
260 if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
261 info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
262 fgcol = ((u32 *)info->pseudo_palette)[image->fg_color];
263 bgcol = ((u32 *)info->pseudo_palette)[image->bg_color];
264 } else {
265 fgcol = image->fg_color;
266 bgcol = image->bg_color;
267 }
268
269 /*
270 * If not use spin_lock, system will die if user load driver
271 * and immediately unload driver frequently (dual)
272 * since they fb_count could change during the lifetime of
273 * this lock, we are holding it for all cases.
274 */
275 spin_lock(&sm750_dev->slock);
276
277 sm750_dev->accel.de_imageblit(&sm750_dev->accel,
278 image->data, image->width >> 3, 0,
279 base, pitch, Bpp,
280 image->dx, image->dy,
281 image->width, image->height,
282 fgcol, bgcol, HW_ROP2_COPY);
283 spin_unlock(&sm750_dev->slock);
284 }
285
286 static int lynxfb_ops_pan_display(struct fb_var_screeninfo *var,
287 struct fb_info *info)
288 {
289 struct lynxfb_par *par;
290 struct lynxfb_crtc *crtc;
291
292 if (!info)
293 return -EINVAL;
294
295 par = info->par;
296 crtc = &par->crtc;
297 return hw_sm750_pan_display(crtc, var, info);
298 }
299
300 static inline void lynxfb_set_visual_mode(struct fb_info *info)
301 {
302 switch (info->var.bits_per_pixel) {
303 case 8:
304 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
305 break;
306 case 16:
307 case 24:
308 case 32:
309 info->fix.visual = FB_VISUAL_TRUECOLOR;
310 break;
311 default:
312 break;
313 }
314 }
315
316 static inline int lynxfb_set_color_offsets(struct fb_info *info)
317 {
318 lynxfb_set_visual_mode(info);
319
320 switch (info->var.bits_per_pixel) {
321 case 8:
322 info->var.red.offset = 0;
323 info->var.red.length = 8;
324 info->var.green.offset = 0;
325 info->var.green.length = 8;
326 info->var.blue.offset = 0;
327 info->var.blue.length = 8;
328 info->var.transp.length = 0;
329 info->var.transp.offset = 0;
330 break;
331 case 16:
332 info->var.red.offset = 11;
333 info->var.red.length = 5;
334 info->var.green.offset = 5;
335 info->var.green.length = 6;
336 info->var.blue.offset = 0;
337 info->var.blue.length = 5;
338 info->var.transp.length = 0;
339 info->var.transp.offset = 0;
340 break;
341 case 24:
342 case 32:
343 info->var.red.offset = 16;
344 info->var.red.length = 8;
345 info->var.green.offset = 8;
346 info->var.green.length = 8;
347 info->var.blue.offset = 0;
348 info->var.blue.length = 8;
349 break;
350 default:
351 return -EINVAL;
352 }
353 return 0;
354 }
355
356 static int lynxfb_ops_set_par(struct fb_info *info)
357 {
358 struct lynxfb_par *par;
359 struct lynxfb_crtc *crtc;
360 struct lynxfb_output *output;
361 struct fb_var_screeninfo *var;
362 struct fb_fix_screeninfo *fix;
363 int ret;
364 unsigned int line_length;
365
366 if (!info)
367 return -EINVAL;
368
369 ret = 0;
370 par = info->par;
371 crtc = &par->crtc;
372 output = &par->output;
373 var = &info->var;
374 fix = &info->fix;
375
376 /* fix structure is not so FIX ... */
377 line_length = var->xres_virtual * var->bits_per_pixel / 8;
378 line_length = ALIGN(line_length, crtc->line_pad);
379 fix->line_length = line_length;
380 pr_info("fix->line_length = %d\n", fix->line_length);
381
382 /*
383 * var->red,green,blue,transp are need to be set by driver
384 * and these data should be set before setcolreg routine
385 */
386
387 ret = lynxfb_set_color_offsets(info);
388
389 var->height = var->width = -1;
390 var->accel_flags = 0;/*FB_ACCELF_TEXT;*/
391
392 if (ret) {
393 pr_err("bpp %d not supported\n", var->bits_per_pixel);
394 return ret;
395 }
396 ret = hw_sm750_crtc_setMode(crtc, var, fix);
397 if (!ret)
398 ret = hw_sm750_output_setMode(output, var, fix);
399 return ret;
400 }
401
402 static inline unsigned int chan_to_field(unsigned int chan,
403 struct fb_bitfield *bf)
404 {
405 chan &= 0xffff;
406 chan >>= 16 - bf->length;
407 return chan << bf->offset;
408 }
409
410 static int __maybe_unused lynxfb_suspend(struct device *dev)
411 {
412 struct fb_info *info;
413 struct sm750_dev *sm750_dev;
414
415 sm750_dev = dev_get_drvdata(dev);
416
417 console_lock();
418 info = sm750_dev->fbinfo[0];
419 if (info)
420 /* 1 means do suspend */
421 fb_set_suspend(info, 1);
422 info = sm750_dev->fbinfo[1];
423 if (info)
424 /* 1 means do suspend */
425 fb_set_suspend(info, 1);
426
427 console_unlock();
428 return 0;
429 }
430
431 static int __maybe_unused lynxfb_resume(struct device *dev)
432 {
433 struct pci_dev *pdev = to_pci_dev(dev);
434 struct fb_info *info;
435 struct sm750_dev *sm750_dev;
436
437 struct lynxfb_par *par;
438 struct lynxfb_crtc *crtc;
439 struct lynx_cursor *cursor;
440
441 sm750_dev = pci_get_drvdata(pdev);
442
443 console_lock();
444
445 hw_sm750_inithw(sm750_dev, pdev);
446
447 info = sm750_dev->fbinfo[0];
448
449 if (info) {
450 par = info->par;
451 crtc = &par->crtc;
452 cursor = &crtc->cursor;
453 memset_io(cursor->vstart, 0x0, cursor->size);
454 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
455 lynxfb_ops_set_par(info);
456 fb_set_suspend(info, 0);
457 }
458
459 info = sm750_dev->fbinfo[1];
460
461 if (info) {
462 par = info->par;
463 crtc = &par->crtc;
464 cursor = &crtc->cursor;
465 memset_io(cursor->vstart, 0x0, cursor->size);
466 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
467 lynxfb_ops_set_par(info);
468 fb_set_suspend(info, 0);
469 }
470
471 pdev->dev.power.power_state.event = PM_EVENT_RESUME;
472
473 console_unlock();
474 return 0;
475 }
476
477 static int lynxfb_ops_check_var(struct fb_var_screeninfo *var,
478 struct fb_info *info)
479 {
480 int ret;
481 struct lynxfb_par *par;
482 struct lynxfb_crtc *crtc;
483 resource_size_t request;
484
485 ret = 0;
486 par = info->par;
487 crtc = &par->crtc;
488
489 pr_debug("check var:%dx%d-%d\n",
490 var->xres,
491 var->yres,
492 var->bits_per_pixel);
493
494 ret = lynxfb_set_color_offsets(info);
495
496 if (ret) {
497 pr_err("bpp %d not supported\n", var->bits_per_pixel);
498 return ret;
499 }
500
501 var->height = var->width = -1;
502 var->accel_flags = 0;/* FB_ACCELF_TEXT; */
503
504 /* check if current fb's video memory big enough to hold the onscreen*/
505 request = var->xres_virtual * (var->bits_per_pixel >> 3);
506 /* defaulty crtc->channel go with par->index */
507
508 request = ALIGN(request, crtc->line_pad);
509 request = request * var->yres_virtual;
510 if (crtc->vidmem_size < request) {
511 pr_err("not enough video memory for mode\n");
512 return -ENOMEM;
513 }
514
515 return hw_sm750_crtc_checkMode(crtc, var);
516 }
517
518 static int lynxfb_ops_setcolreg(unsigned int regno,
519 unsigned int red,
520 unsigned int green,
521 unsigned int blue,
522 unsigned int transp,
523 struct fb_info *info)
524 {
525 struct lynxfb_par *par;
526 struct lynxfb_crtc *crtc;
527 struct fb_var_screeninfo *var;
528 int ret;
529
530 par = info->par;
531 crtc = &par->crtc;
532 var = &info->var;
533 ret = 0;
534
535 if (regno > 256) {
536 pr_err("regno = %d\n", regno);
537 return -EINVAL;
538 }
539
540 if (info->var.grayscale)
541 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
542
543 if (var->bits_per_pixel == 8 &&
544 info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
545 red >>= 8;
546 green >>= 8;
547 blue >>= 8;
548 ret = hw_sm750_setColReg(crtc, regno, red, green, blue);
549 goto exit;
550 }
551
552 if (info->fix.visual == FB_VISUAL_TRUECOLOR && regno < 256) {
553 u32 val;
554
555 if (var->bits_per_pixel == 16 ||
556 var->bits_per_pixel == 32 ||
557 var->bits_per_pixel == 24) {
558 val = chan_to_field(red, &var->red);
559 val |= chan_to_field(green, &var->green);
560 val |= chan_to_field(blue, &var->blue);
561 par->pseudo_palette[regno] = val;
562 goto exit;
563 }
564 }
565
566 ret = -EINVAL;
567
568 exit:
569 return ret;
570 }
571
572 static int lynxfb_ops_blank(int blank, struct fb_info *info)
573 {
574 struct lynxfb_par *par;
575 struct lynxfb_output *output;
576
577 pr_debug("blank = %d.\n", blank);
578 par = info->par;
579 output = &par->output;
580 return output->proc_setBLANK(output, blank);
581 }
582
583 static int sm750fb_set_drv(struct lynxfb_par *par)
584 {
585 int ret;
586 struct sm750_dev *sm750_dev;
587 struct lynxfb_output *output;
588 struct lynxfb_crtc *crtc;
589
590 ret = 0;
591
592 sm750_dev = par->dev;
593 output = &par->output;
594 crtc = &par->crtc;
595
596 crtc->vidmem_size = sm750_dev->vidmem_size;
597 if (sm750_dev->fb_count > 1)
598 crtc->vidmem_size >>= 1;
599
600 /* setup crtc and output member */
601 sm750_dev->hwCursor = g_hwcursor;
602
603 crtc->line_pad = 16;
604 crtc->xpanstep = 8;
605 crtc->ypanstep = 1;
606 crtc->ywrapstep = 0;
607
608 output->proc_setBLANK = (sm750_dev->revid == SM750LE_REVISION_ID) ?
609 hw_sm750le_setBLANK : hw_sm750_setBLANK;
610 /* chip specific phase */
611 sm750_dev->accel.de_wait = (sm750_dev->revid == SM750LE_REVISION_ID) ?
612 hw_sm750le_deWait : hw_sm750_deWait;
613 switch (sm750_dev->dataflow) {
614 case sm750_simul_pri:
615 output->paths = sm750_pnc;
616 crtc->channel = sm750_primary;
617 crtc->oScreen = 0;
618 crtc->vScreen = sm750_dev->pvMem;
619 pr_info("use simul primary mode\n");
620 break;
621 case sm750_simul_sec:
622 output->paths = sm750_pnc;
623 crtc->channel = sm750_secondary;
624 crtc->oScreen = 0;
625 crtc->vScreen = sm750_dev->pvMem;
626 break;
627 case sm750_dual_normal:
628 if (par->index == 0) {
629 output->paths = sm750_panel;
630 crtc->channel = sm750_primary;
631 crtc->oScreen = 0;
632 crtc->vScreen = sm750_dev->pvMem;
633 } else {
634 output->paths = sm750_crt;
635 crtc->channel = sm750_secondary;
636 /* not consider of padding stuffs for oScreen,need fix */
637 crtc->oScreen = sm750_dev->vidmem_size >> 1;
638 crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
639 }
640 break;
641 case sm750_dual_swap:
642 if (par->index == 0) {
643 output->paths = sm750_panel;
644 crtc->channel = sm750_secondary;
645 crtc->oScreen = 0;
646 crtc->vScreen = sm750_dev->pvMem;
647 } else {
648 output->paths = sm750_crt;
649 crtc->channel = sm750_primary;
650 /* not consider of padding stuffs for oScreen,
651 * need fix
652 */
653 crtc->oScreen = sm750_dev->vidmem_size >> 1;
654 crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
655 }
656 break;
657 default:
658 ret = -EINVAL;
659 }
660
661 return ret;
662 }
663
664 static struct fb_ops lynxfb_ops = {
665 .owner = THIS_MODULE,
666 .fb_check_var = lynxfb_ops_check_var,
667 .fb_set_par = lynxfb_ops_set_par,
668 .fb_setcolreg = lynxfb_ops_setcolreg,
669 .fb_blank = lynxfb_ops_blank,
670 .fb_fillrect = cfb_fillrect,
671 .fb_imageblit = cfb_imageblit,
672 .fb_copyarea = cfb_copyarea,
673 /* cursor */
674 .fb_cursor = lynxfb_ops_cursor,
675 };
676
677 static int lynxfb_set_fbinfo(struct fb_info *info, int index)
678 {
679 int i;
680 struct lynxfb_par *par;
681 struct sm750_dev *sm750_dev;
682 struct lynxfb_crtc *crtc;
683 struct lynxfb_output *output;
684 struct fb_var_screeninfo *var;
685 struct fb_fix_screeninfo *fix;
686
687 const struct fb_videomode *pdb[] = {
688 lynx750_ext, NULL, vesa_modes,
689 };
690 int cdb[] = {ARRAY_SIZE(lynx750_ext), 0, VESA_MODEDB_SIZE};
691 static const char * const mdb_desc[] = {
692 "driver prepared modes",
693 "kernel prepared default modedb",
694 "kernel HELPERS prepared vesa_modes",
695 };
696
697 static const char *fixId[2] = {
698 "sm750_fb1", "sm750_fb2",
699 };
700
701 int ret, line_length;
702
703 ret = 0;
704 par = (struct lynxfb_par *)info->par;
705 sm750_dev = par->dev;
706 crtc = &par->crtc;
707 output = &par->output;
708 var = &info->var;
709 fix = &info->fix;
710
711 /* set index */
712 par->index = index;
713 output->channel = &crtc->channel;
714 sm750fb_set_drv(par);
715 lynxfb_ops.fb_pan_display = lynxfb_ops_pan_display;
716
717 /*
718 * set current cursor variable and proc pointer,
719 * must be set after crtc member initialized
720 */
721 crtc->cursor.offset = crtc->oScreen + crtc->vidmem_size - 1024;
722 crtc->cursor.mmio = sm750_dev->pvReg +
723 0x800f0 + (int)crtc->channel * 0x140;
724
725 pr_info("crtc->cursor.mmio = %p\n", crtc->cursor.mmio);
726 crtc->cursor.maxH = crtc->cursor.maxW = 64;
727 crtc->cursor.size = crtc->cursor.maxH * crtc->cursor.maxW * 2 / 8;
728 crtc->cursor.vstart = sm750_dev->pvMem + crtc->cursor.offset;
729
730 memset_io(crtc->cursor.vstart, 0, crtc->cursor.size);
731 if (!g_hwcursor) {
732 lynxfb_ops.fb_cursor = NULL;
733 sm750_hw_cursor_disable(&crtc->cursor);
734 }
735
736 /* set info->fbops, must be set before fb_find_mode */
737 if (!sm750_dev->accel_off) {
738 /* use 2d acceleration */
739 lynxfb_ops.fb_fillrect = lynxfb_ops_fillrect;
740 lynxfb_ops.fb_copyarea = lynxfb_ops_copyarea;
741 lynxfb_ops.fb_imageblit = lynxfb_ops_imageblit;
742 }
743 info->fbops = &lynxfb_ops;
744
745 if (!g_fbmode[index]) {
746 g_fbmode[index] = g_def_fbmode;
747 if (index)
748 g_fbmode[index] = g_fbmode[0];
749 }
750
751 for (i = 0; i < 3; i++) {
752 ret = fb_find_mode(var, info, g_fbmode[index],
753 pdb[i], cdb[i], NULL, 8);
754
755 if (ret == 1) {
756 pr_info("success! use specified mode:%s in %s\n",
757 g_fbmode[index],
758 mdb_desc[i]);
759 break;
760 } else if (ret == 2) {
761 pr_warn("use specified mode:%s in %s,with an ignored refresh rate\n",
762 g_fbmode[index],
763 mdb_desc[i]);
764 break;
765 } else if (ret == 3) {
766 pr_warn("wanna use default mode\n");
767 /*break;*/
768 } else if (ret == 4) {
769 pr_warn("fall back to any valid mode\n");
770 } else {
771 pr_warn("ret = %d,fb_find_mode failed,with %s\n",
772 ret,
773 mdb_desc[i]);
774 }
775 }
776
777 /* some member of info->var had been set by fb_find_mode */
778
779 pr_info("Member of info->var is :\n"
780 "xres=%d\n"
781 "yres=%d\n"
782 "xres_virtual=%d\n"
783 "yres_virtual=%d\n"
784 "xoffset=%d\n"
785 "yoffset=%d\n"
786 "bits_per_pixel=%d\n"
787 " ...\n",
788 var->xres,
789 var->yres,
790 var->xres_virtual,
791 var->yres_virtual,
792 var->xoffset,
793 var->yoffset,
794 var->bits_per_pixel);
795
796 /* set par */
797 par->info = info;
798
799 /* set info */
800 line_length = ALIGN((var->xres_virtual * var->bits_per_pixel / 8),
801 crtc->line_pad);
802
803 info->pseudo_palette = &par->pseudo_palette[0];
804 info->screen_base = crtc->vScreen;
805 pr_debug("screen_base vaddr = %p\n", info->screen_base);
806 info->screen_size = line_length * var->yres_virtual;
807 info->flags = FBINFO_FLAG_DEFAULT | 0;
808
809 /* set info->fix */
810 fix->type = FB_TYPE_PACKED_PIXELS;
811 fix->type_aux = 0;
812 fix->xpanstep = crtc->xpanstep;
813 fix->ypanstep = crtc->ypanstep;
814 fix->ywrapstep = crtc->ywrapstep;
815 fix->accel = FB_ACCEL_SMI;
816
817 strlcpy(fix->id, fixId[index], sizeof(fix->id));
818
819 fix->smem_start = crtc->oScreen + sm750_dev->vidmem_start;
820 pr_info("fix->smem_start = %lx\n", fix->smem_start);
821 /*
822 * according to mmap experiment from user space application,
823 * fix->mmio_len should not larger than virtual size
824 * (xres_virtual x yres_virtual x ByPP)
825 * Below line maybe buggy when user mmap fb dev node and write
826 * data into the bound over virtual size
827 */
828 fix->smem_len = crtc->vidmem_size;
829 pr_info("fix->smem_len = %x\n", fix->smem_len);
830 info->screen_size = fix->smem_len;
831 fix->line_length = line_length;
832 fix->mmio_start = sm750_dev->vidreg_start;
833 pr_info("fix->mmio_start = %lx\n", fix->mmio_start);
834 fix->mmio_len = sm750_dev->vidreg_size;
835 pr_info("fix->mmio_len = %x\n", fix->mmio_len);
836
837 lynxfb_set_visual_mode(info);
838
839 /* set var */
840 var->activate = FB_ACTIVATE_NOW;
841 var->accel_flags = 0;
842 var->vmode = FB_VMODE_NONINTERLACED;
843
844 pr_debug("#1 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
845 info->cmap.start, info->cmap.len,
846 info->cmap.red, info->cmap.green, info->cmap.blue,
847 info->cmap.transp);
848
849 ret = fb_alloc_cmap(&info->cmap, 256, 0);
850 if (ret < 0) {
851 pr_err("Could not allocate memory for cmap.\n");
852 goto exit;
853 }
854
855 pr_debug("#2 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
856 info->cmap.start, info->cmap.len,
857 info->cmap.red, info->cmap.green, info->cmap.blue,
858 info->cmap.transp);
859
860 exit:
861 lynxfb_ops_check_var(var, info);
862 return ret;
863 }
864
865 /* chip specific g_option configuration routine */
866 static void sm750fb_setup(struct sm750_dev *sm750_dev, char *src)
867 {
868 char *opt;
869 int swap;
870
871 swap = 0;
872
873 sm750_dev->initParm.chip_clk = 0;
874 sm750_dev->initParm.mem_clk = 0;
875 sm750_dev->initParm.master_clk = 0;
876 sm750_dev->initParm.powerMode = 0;
877 sm750_dev->initParm.setAllEngOff = 0;
878 sm750_dev->initParm.resetMemory = 1;
879
880 /* defaultly turn g_hwcursor on for both view */
881 g_hwcursor = 3;
882
883 if (!src || !*src) {
884 dev_warn(&sm750_dev->pdev->dev, "no specific g_option.\n");
885 goto NO_PARAM;
886 }
887
888 while ((opt = strsep(&src, ":")) != NULL && *opt != 0) {
889 dev_info(&sm750_dev->pdev->dev, "opt=%s\n", opt);
890 dev_info(&sm750_dev->pdev->dev, "src=%s\n", src);
891
892 if (!strncmp(opt, "swap", strlen("swap"))) {
893 swap = 1;
894 } else if (!strncmp(opt, "nocrt", strlen("nocrt"))) {
895 sm750_dev->nocrt = 1;
896 } else if (!strncmp(opt, "36bit", strlen("36bit"))) {
897 sm750_dev->pnltype = sm750_doubleTFT;
898 } else if (!strncmp(opt, "18bit", strlen("18bit"))) {
899 sm750_dev->pnltype = sm750_dualTFT;
900 } else if (!strncmp(opt, "24bit", strlen("24bit"))) {
901 sm750_dev->pnltype = sm750_24TFT;
902 } else if (!strncmp(opt, "nohwc0", strlen("nohwc0"))) {
903 g_hwcursor &= ~0x1;
904 } else if (!strncmp(opt, "nohwc1", strlen("nohwc1"))) {
905 g_hwcursor &= ~0x2;
906 } else if (!strncmp(opt, "nohwc", strlen("nohwc"))) {
907 g_hwcursor = 0;
908 } else {
909 if (!g_fbmode[0]) {
910 g_fbmode[0] = opt;
911 dev_info(&sm750_dev->pdev->dev,
912 "find fbmode0 : %s\n", g_fbmode[0]);
913 } else if (!g_fbmode[1]) {
914 g_fbmode[1] = opt;
915 dev_info(&sm750_dev->pdev->dev,
916 "find fbmode1 : %s\n", g_fbmode[1]);
917 } else {
918 dev_warn(&sm750_dev->pdev->dev, "How many view you wann set?\n");
919 }
920 }
921 }
922
923 NO_PARAM:
924 if (sm750_dev->revid != SM750LE_REVISION_ID) {
925 if (sm750_dev->fb_count > 1) {
926 if (swap)
927 sm750_dev->dataflow = sm750_dual_swap;
928 else
929 sm750_dev->dataflow = sm750_dual_normal;
930 } else {
931 if (swap)
932 sm750_dev->dataflow = sm750_simul_sec;
933 else
934 sm750_dev->dataflow = sm750_simul_pri;
935 }
936 } else {
937 /* SM750LE only have one crt channel */
938 sm750_dev->dataflow = sm750_simul_sec;
939 /* sm750le do not have complex attributes */
940 sm750_dev->nocrt = 0;
941 }
942 }
943
944 static void sm750fb_framebuffer_release(struct sm750_dev *sm750_dev)
945 {
946 struct fb_info *fb_info;
947
948 while (sm750_dev->fb_count) {
949 fb_info = sm750_dev->fbinfo[sm750_dev->fb_count - 1];
950 unregister_framebuffer(fb_info);
951 framebuffer_release(fb_info);
952 sm750_dev->fb_count--;
953 }
954 }
955
956 static int sm750fb_framebuffer_alloc(struct sm750_dev *sm750_dev, int fbidx)
957 {
958 struct fb_info *fb_info;
959 struct lynxfb_par *par;
960 int err;
961
962 fb_info = framebuffer_alloc(sizeof(struct lynxfb_par),
963 &sm750_dev->pdev->dev);
964 if (!fb_info)
965 return -ENOMEM;
966
967 sm750_dev->fbinfo[fbidx] = fb_info;
968 par = fb_info->par;
969 par->dev = sm750_dev;
970
971 err = lynxfb_set_fbinfo(fb_info, fbidx);
972 if (err)
973 goto release_fb;
974
975 err = register_framebuffer(fb_info);
976 if (err < 0)
977 goto release_fb;
978
979 sm750_dev->fb_count++;
980
981 return 0;
982
983 release_fb:
984 framebuffer_release(fb_info);
985 return err;
986 }
987
988 static int lynxfb_kick_out_firmware_fb(struct pci_dev *pdev)
989 {
990 struct apertures_struct *ap;
991 bool primary = false;
992
993 ap = alloc_apertures(1);
994 if (!ap)
995 return -ENOMEM;
996
997 ap->ranges[0].base = pci_resource_start(pdev, 0);
998 ap->ranges[0].size = pci_resource_len(pdev, 0);
999 #ifdef CONFIG_X86
1000 primary = pdev->resource[PCI_ROM_RESOURCE].flags &
1001 IORESOURCE_ROM_SHADOW;
1002 #endif
1003 remove_conflicting_framebuffers(ap, "sm750_fb1", primary);
1004 kfree(ap);
1005 return 0;
1006 }
1007
1008 static int lynxfb_pci_probe(struct pci_dev *pdev,
1009 const struct pci_device_id *ent)
1010 {
1011 struct sm750_dev *sm750_dev = NULL;
1012 int max_fb;
1013 int fbidx;
1014 int err;
1015
1016 err = lynxfb_kick_out_firmware_fb(pdev);
1017 if (err)
1018 return err;
1019
1020 /* enable device */
1021 err = pcim_enable_device(pdev);
1022 if (err)
1023 return err;
1024
1025 err = -ENOMEM;
1026 sm750_dev = devm_kzalloc(&pdev->dev, sizeof(*sm750_dev), GFP_KERNEL);
1027 if (!sm750_dev)
1028 return err;
1029
1030 sm750_dev->fbinfo[0] = sm750_dev->fbinfo[1] = NULL;
1031 sm750_dev->devid = pdev->device;
1032 sm750_dev->revid = pdev->revision;
1033 sm750_dev->pdev = pdev;
1034 sm750_dev->mtrr_off = g_nomtrr;
1035 sm750_dev->mtrr.vram = 0;
1036 sm750_dev->accel_off = g_noaccel;
1037 spin_lock_init(&sm750_dev->slock);
1038
1039 if (!sm750_dev->accel_off) {
1040 /*
1041 * hook deInit and 2d routines, notes that below hw_xxx
1042 * routine can work on most of lynx chips
1043 * if some chip need specific function,
1044 * please hook it in smXXX_set_drv routine
1045 */
1046 sm750_dev->accel.de_init = sm750_hw_de_init;
1047 sm750_dev->accel.de_fillrect = sm750_hw_fillrect;
1048 sm750_dev->accel.de_copyarea = sm750_hw_copyarea;
1049 sm750_dev->accel.de_imageblit = sm750_hw_imageblit;
1050 }
1051
1052 /* call chip specific setup routine */
1053 sm750fb_setup(sm750_dev, g_settings);
1054
1055 /* call chip specific mmap routine */
1056 err = hw_sm750_map(sm750_dev, pdev);
1057 if (err)
1058 return err;
1059
1060 if (!sm750_dev->mtrr_off)
1061 sm750_dev->mtrr.vram = arch_phys_wc_add(sm750_dev->vidmem_start,
1062 sm750_dev->vidmem_size);
1063
1064 memset_io(sm750_dev->pvMem, 0, sm750_dev->vidmem_size);
1065
1066 pci_set_drvdata(pdev, sm750_dev);
1067
1068 /* call chipInit routine */
1069 hw_sm750_inithw(sm750_dev, pdev);
1070
1071 /* allocate frame buffer info structures according to g_dualview */
1072 max_fb = g_dualview ? 2 : 1;
1073 for (fbidx = 0; fbidx < max_fb; fbidx++) {
1074 err = sm750fb_framebuffer_alloc(sm750_dev, fbidx);
1075 if (err)
1076 goto release_fb;
1077 }
1078
1079 return 0;
1080
1081 release_fb:
1082 sm750fb_framebuffer_release(sm750_dev);
1083 return err;
1084 }
1085
1086 static void lynxfb_pci_remove(struct pci_dev *pdev)
1087 {
1088 struct sm750_dev *sm750_dev;
1089
1090 sm750_dev = pci_get_drvdata(pdev);
1091
1092 sm750fb_framebuffer_release(sm750_dev);
1093 arch_phys_wc_del(sm750_dev->mtrr.vram);
1094
1095 iounmap(sm750_dev->pvReg);
1096 iounmap(sm750_dev->pvMem);
1097 kfree(g_settings);
1098 }
1099
1100 static int __init lynxfb_setup(char *options)
1101 {
1102 int len;
1103 char *opt, *tmp;
1104
1105 if (!options || !*options) {
1106 pr_warn("no options.\n");
1107 return 0;
1108 }
1109
1110 pr_info("options:%s\n", options);
1111
1112 len = strlen(options) + 1;
1113 g_settings = kzalloc(len, GFP_KERNEL);
1114 if (!g_settings)
1115 return -ENOMEM;
1116
1117 tmp = g_settings;
1118
1119 /*
1120 * Notes:
1121 * char * strsep(char **s,const char * ct);
1122 * @s: the string to be searched
1123 * @ct :the characters to search for
1124 *
1125 * strsep() updates @options to pointer after the first found token
1126 * it also returns the pointer ahead the token.
1127 */
1128 while ((opt = strsep(&options, ":")) != NULL) {
1129 /* options that mean for any lynx chips are configured here */
1130 if (!strncmp(opt, "noaccel", strlen("noaccel"))) {
1131 g_noaccel = 1;
1132 } else if (!strncmp(opt, "nomtrr", strlen("nomtrr"))) {
1133 g_nomtrr = 1;
1134 } else if (!strncmp(opt, "dual", strlen("dual"))) {
1135 g_dualview = 1;
1136 } else {
1137 strcat(tmp, opt);
1138 tmp += strlen(opt);
1139 if (options)
1140 *tmp++ = ':';
1141 else
1142 *tmp++ = 0;
1143 }
1144 }
1145
1146 /* misc g_settings are transport to chip specific routines */
1147 pr_info("parameter left for chip specific analysis:%s\n", g_settings);
1148 return 0;
1149 }
1150
1151 static const struct pci_device_id smi_pci_table[] = {
1152 { PCI_DEVICE(0x126f, 0x0750), },
1153 {0,}
1154 };
1155
1156 MODULE_DEVICE_TABLE(pci, smi_pci_table);
1157
1158 static SIMPLE_DEV_PM_OPS(lynxfb_pm_ops, lynxfb_suspend, lynxfb_resume);
1159
1160 static struct pci_driver lynxfb_driver = {
1161 .name = "sm750fb",
1162 .id_table = smi_pci_table,
1163 .probe = lynxfb_pci_probe,
1164 .remove = lynxfb_pci_remove,
1165 .driver.pm = &lynxfb_pm_ops,
1166 };
1167
1168 static int __init lynxfb_init(void)
1169 {
1170 char *option;
1171
1172 #ifdef MODULE
1173 option = g_option;
1174 #else
1175 if (fb_get_options("sm750fb", &option))
1176 return -ENODEV;
1177 #endif
1178
1179 lynxfb_setup(option);
1180 return pci_register_driver(&lynxfb_driver);
1181 }
1182 module_init(lynxfb_init);
1183
1184 static void __exit lynxfb_exit(void)
1185 {
1186 pci_unregister_driver(&lynxfb_driver);
1187 }
1188 module_exit(lynxfb_exit);
1189
1190 module_param(g_option, charp, 0444);
1191
1192 MODULE_PARM_DESC(g_option,
1193 "\n\t\tCommon options:\n"
1194 "\t\tnoaccel:disable 2d capabilities\n"
1195 "\t\tnomtrr:disable MTRR attribute for video memory\n"
1196 "\t\tdualview:dual frame buffer feature enabled\n"
1197 "\t\tnohwc:disable hardware cursor\n"
1198 "\t\tUsual example:\n"
1199 "\t\tinsmod ./sm750fb.ko g_option=\"noaccel,nohwc,1280x1024-8@60\"\n"
1200 );
1201
1202 MODULE_AUTHOR("monk liu <monk.liu@siliconmotion.com>");
1203 MODULE_AUTHOR("Sudip Mukherjee <sudip@vectorindia.org>");
1204 MODULE_DESCRIPTION("Frame buffer driver for SM750 chipset");
1205 MODULE_LICENSE("Dual BSD/GPL");
Linux with added FPC-III support