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11#include <linux/module.h>
12#include <linux/kernel.h>
13#include <linux/errno.h>
14#include <linux/string.h>
15#include <linux/delay.h>
16#include <linux/init.h>
17#include <linux/fb.h>
18#include <linux/mm.h>
19#include <linux/of_device.h>
20
21#include <asm/io.h>
22#include <asm/fbio.h>
23
24#include "sbuslib.h"
25
26
27
28
29
30static int tcx_setcolreg(unsigned, unsigned, unsigned, unsigned,
31 unsigned, struct fb_info *);
32static int tcx_blank(int, struct fb_info *);
33
34static int tcx_mmap(struct fb_info *, struct vm_area_struct *);
35static int tcx_ioctl(struct fb_info *, unsigned int, unsigned long);
36static int tcx_pan_display(struct fb_var_screeninfo *, struct fb_info *);
37
38
39
40
41
42static struct fb_ops tcx_ops = {
43 .owner = THIS_MODULE,
44 .fb_setcolreg = tcx_setcolreg,
45 .fb_blank = tcx_blank,
46 .fb_pan_display = tcx_pan_display,
47 .fb_fillrect = cfb_fillrect,
48 .fb_copyarea = cfb_copyarea,
49 .fb_imageblit = cfb_imageblit,
50 .fb_mmap = tcx_mmap,
51 .fb_ioctl = tcx_ioctl,
52#ifdef CONFIG_COMPAT
53 .fb_compat_ioctl = sbusfb_compat_ioctl,
54#endif
55};
56
57
58#define TCX_THC_MISC_REV_SHIFT 16
59#define TCX_THC_MISC_REV_MASK 15
60#define TCX_THC_MISC_VSYNC_DIS (1 << 25)
61#define TCX_THC_MISC_HSYNC_DIS (1 << 24)
62#define TCX_THC_MISC_RESET (1 << 12)
63#define TCX_THC_MISC_VIDEO (1 << 10)
64#define TCX_THC_MISC_SYNC (1 << 9)
65#define TCX_THC_MISC_VSYNC (1 << 8)
66#define TCX_THC_MISC_SYNC_ENAB (1 << 7)
67#define TCX_THC_MISC_CURS_RES (1 << 6)
68#define TCX_THC_MISC_INT_ENAB (1 << 5)
69#define TCX_THC_MISC_INT (1 << 4)
70#define TCX_THC_MISC_INIT 0x9f
71#define TCX_THC_REV_REV_SHIFT 20
72#define TCX_THC_REV_REV_MASK 15
73#define TCX_THC_REV_MINREV_SHIFT 28
74#define TCX_THC_REV_MINREV_MASK 15
75
76
77struct tcx_tec {
78 u32 tec_matrix;
79 u32 tec_clip;
80 u32 tec_vdc;
81};
82
83struct tcx_thc {
84 u32 thc_rev;
85 u32 thc_pad0[511];
86 u32 thc_hs;
87 u32 thc_hsdvs;
88 u32 thc_hd;
89 u32 thc_vs;
90 u32 thc_vd;
91 u32 thc_refresh;
92 u32 thc_misc;
93 u32 thc_pad1[56];
94 u32 thc_cursxy;
95 u32 thc_cursmask[32];
96 u32 thc_cursbits[32];
97};
98
99struct bt_regs {
100 u32 addr;
101 u32 color_map;
102 u32 control;
103 u32 cursor;
104};
105
106#define TCX_MMAP_ENTRIES 14
107
108struct tcx_par {
109 spinlock_t lock;
110 struct bt_regs __iomem *bt;
111 struct tcx_thc __iomem *thc;
112 struct tcx_tec __iomem *tec;
113 u32 __iomem *cplane;
114
115 u32 flags;
116#define TCX_FLAG_BLANKED 0x00000001
117
118 unsigned long which_io;
119
120 struct sbus_mmap_map mmap_map[TCX_MMAP_ENTRIES];
121 int lowdepth;
122};
123
124
125static void __tcx_set_control_plane(struct fb_info *info)
126{
127 struct tcx_par *par = info->par;
128 u32 __iomem *p, *pend;
129
130 if (par->lowdepth)
131 return;
132
133 p = par->cplane;
134 if (p == NULL)
135 return;
136 for (pend = p + info->fix.smem_len; p < pend; p++) {
137 u32 tmp = sbus_readl(p);
138
139 tmp &= 0xffffff;
140 sbus_writel(tmp, p);
141 }
142}
143
144static void tcx_reset(struct fb_info *info)
145{
146 struct tcx_par *par = (struct tcx_par *) info->par;
147 unsigned long flags;
148
149 spin_lock_irqsave(&par->lock, flags);
150 __tcx_set_control_plane(info);
151 spin_unlock_irqrestore(&par->lock, flags);
152}
153
154static int tcx_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
155{
156 tcx_reset(info);
157 return 0;
158}
159
160
161
162
163
164
165
166
167
168
169static int tcx_setcolreg(unsigned regno,
170 unsigned red, unsigned green, unsigned blue,
171 unsigned transp, struct fb_info *info)
172{
173 struct tcx_par *par = (struct tcx_par *) info->par;
174 struct bt_regs __iomem *bt = par->bt;
175 unsigned long flags;
176
177 if (regno >= 256)
178 return 1;
179
180 red >>= 8;
181 green >>= 8;
182 blue >>= 8;
183
184 spin_lock_irqsave(&par->lock, flags);
185
186 sbus_writel(regno << 24, &bt->addr);
187 sbus_writel(red << 24, &bt->color_map);
188 sbus_writel(green << 24, &bt->color_map);
189 sbus_writel(blue << 24, &bt->color_map);
190
191 spin_unlock_irqrestore(&par->lock, flags);
192
193 return 0;
194}
195
196
197
198
199
200
201static int
202tcx_blank(int blank, struct fb_info *info)
203{
204 struct tcx_par *par = (struct tcx_par *) info->par;
205 struct tcx_thc __iomem *thc = par->thc;
206 unsigned long flags;
207 u32 val;
208
209 spin_lock_irqsave(&par->lock, flags);
210
211 val = sbus_readl(&thc->thc_misc);
212
213 switch (blank) {
214 case FB_BLANK_UNBLANK:
215 val &= ~(TCX_THC_MISC_VSYNC_DIS |
216 TCX_THC_MISC_HSYNC_DIS);
217 val |= TCX_THC_MISC_VIDEO;
218 par->flags &= ~TCX_FLAG_BLANKED;
219 break;
220
221 case FB_BLANK_NORMAL:
222 val &= ~TCX_THC_MISC_VIDEO;
223 par->flags |= TCX_FLAG_BLANKED;
224 break;
225
226 case FB_BLANK_VSYNC_SUSPEND:
227 val |= TCX_THC_MISC_VSYNC_DIS;
228 break;
229 case FB_BLANK_HSYNC_SUSPEND:
230 val |= TCX_THC_MISC_HSYNC_DIS;
231 break;
232
233 case FB_BLANK_POWERDOWN:
234 break;
235 }
236
237 sbus_writel(val, &thc->thc_misc);
238
239 spin_unlock_irqrestore(&par->lock, flags);
240
241 return 0;
242}
243
244static struct sbus_mmap_map __tcx_mmap_map[TCX_MMAP_ENTRIES] = {
245 {
246 .voff = TCX_RAM8BIT,
247 .size = SBUS_MMAP_FBSIZE(1)
248 },
249 {
250 .voff = TCX_RAM24BIT,
251 .size = SBUS_MMAP_FBSIZE(4)
252 },
253 {
254 .voff = TCX_UNK3,
255 .size = SBUS_MMAP_FBSIZE(8)
256 },
257 {
258 .voff = TCX_UNK4,
259 .size = SBUS_MMAP_FBSIZE(8)
260 },
261 {
262 .voff = TCX_CONTROLPLANE,
263 .size = SBUS_MMAP_FBSIZE(4)
264 },
265 {
266 .voff = TCX_UNK6,
267 .size = SBUS_MMAP_FBSIZE(8)
268 },
269 {
270 .voff = TCX_UNK7,
271 .size = SBUS_MMAP_FBSIZE(8)
272 },
273 {
274 .voff = TCX_TEC,
275 .size = PAGE_SIZE
276 },
277 {
278 .voff = TCX_BTREGS,
279 .size = PAGE_SIZE
280 },
281 {
282 .voff = TCX_THC,
283 .size = PAGE_SIZE
284 },
285 {
286 .voff = TCX_DHC,
287 .size = PAGE_SIZE
288 },
289 {
290 .voff = TCX_ALT,
291 .size = PAGE_SIZE
292 },
293 {
294 .voff = TCX_UNK2,
295 .size = 0x20000
296 },
297 { .size = 0 }
298};
299
300static int tcx_mmap(struct fb_info *info, struct vm_area_struct *vma)
301{
302 struct tcx_par *par = (struct tcx_par *)info->par;
303
304 return sbusfb_mmap_helper(par->mmap_map,
305 info->fix.smem_start, info->fix.smem_len,
306 par->which_io, vma);
307}
308
309static int tcx_ioctl(struct fb_info *info, unsigned int cmd,
310 unsigned long arg)
311{
312 struct tcx_par *par = (struct tcx_par *) info->par;
313
314 return sbusfb_ioctl_helper(cmd, arg, info,
315 FBTYPE_TCXCOLOR,
316 (par->lowdepth ? 8 : 24),
317 info->fix.smem_len);
318}
319
320
321
322
323
324static void
325tcx_init_fix(struct fb_info *info, int linebytes)
326{
327 struct tcx_par *par = (struct tcx_par *)info->par;
328 const char *tcx_name;
329
330 if (par->lowdepth)
331 tcx_name = "TCX8";
332 else
333 tcx_name = "TCX24";
334
335 strlcpy(info->fix.id, tcx_name, sizeof(info->fix.id));
336
337 info->fix.type = FB_TYPE_PACKED_PIXELS;
338 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
339
340 info->fix.line_length = linebytes;
341
342 info->fix.accel = FB_ACCEL_SUN_TCX;
343}
344
345static void tcx_unmap_regs(struct platform_device *op, struct fb_info *info,
346 struct tcx_par *par)
347{
348 if (par->tec)
349 of_iounmap(&op->resource[7],
350 par->tec, sizeof(struct tcx_tec));
351 if (par->thc)
352 of_iounmap(&op->resource[9],
353 par->thc, sizeof(struct tcx_thc));
354 if (par->bt)
355 of_iounmap(&op->resource[8],
356 par->bt, sizeof(struct bt_regs));
357 if (par->cplane)
358 of_iounmap(&op->resource[4],
359 par->cplane, info->fix.smem_len * sizeof(u32));
360 if (info->screen_base)
361 of_iounmap(&op->resource[0],
362 info->screen_base, info->fix.smem_len);
363}
364
365static int tcx_probe(struct platform_device *op)
366{
367 struct device_node *dp = op->dev.of_node;
368 struct fb_info *info;
369 struct tcx_par *par;
370 int linebytes, i, err;
371
372 info = framebuffer_alloc(sizeof(struct tcx_par), &op->dev);
373
374 err = -ENOMEM;
375 if (!info)
376 goto out_err;
377 par = info->par;
378
379 spin_lock_init(&par->lock);
380
381 par->lowdepth =
382 (of_find_property(dp, "tcx-8-bit", NULL) != NULL);
383
384 sbusfb_fill_var(&info->var, dp, 8);
385 info->var.red.length = 8;
386 info->var.green.length = 8;
387 info->var.blue.length = 8;
388
389 linebytes = of_getintprop_default(dp, "linebytes",
390 info->var.xres);
391 info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
392
393 par->tec = of_ioremap(&op->resource[7], 0,
394 sizeof(struct tcx_tec), "tcx tec");
395 par->thc = of_ioremap(&op->resource[9], 0,
396 sizeof(struct tcx_thc), "tcx thc");
397 par->bt = of_ioremap(&op->resource[8], 0,
398 sizeof(struct bt_regs), "tcx dac");
399 info->screen_base = of_ioremap(&op->resource[0], 0,
400 info->fix.smem_len, "tcx ram");
401 if (!par->tec || !par->thc ||
402 !par->bt || !info->screen_base)
403 goto out_unmap_regs;
404
405 memcpy(&par->mmap_map, &__tcx_mmap_map, sizeof(par->mmap_map));
406 if (!par->lowdepth) {
407 par->cplane = of_ioremap(&op->resource[4], 0,
408 info->fix.smem_len * sizeof(u32),
409 "tcx cplane");
410 if (!par->cplane)
411 goto out_unmap_regs;
412 } else {
413 par->mmap_map[1].size = SBUS_MMAP_EMPTY;
414 par->mmap_map[4].size = SBUS_MMAP_EMPTY;
415 par->mmap_map[5].size = SBUS_MMAP_EMPTY;
416 par->mmap_map[6].size = SBUS_MMAP_EMPTY;
417 }
418
419 info->fix.smem_start = op->resource[0].start;
420 par->which_io = op->resource[0].flags & IORESOURCE_BITS;
421
422 for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
423 int j;
424
425 switch (i) {
426 case 10:
427 j = 12;
428 break;
429
430 case 11: case 12:
431 j = i - 1;
432 break;
433
434 default:
435 j = i;
436 break;
437 }
438 par->mmap_map[i].poff = op->resource[j].start;
439 }
440
441 info->flags = FBINFO_DEFAULT;
442 info->fbops = &tcx_ops;
443
444
445 sbus_writel(0x04 << 24, &par->bt->addr);
446 sbus_writel(0xff << 24, &par->bt->control);
447 sbus_writel(0x05 << 24, &par->bt->addr);
448 sbus_writel(0x00 << 24, &par->bt->control);
449 sbus_writel(0x06 << 24, &par->bt->addr);
450 sbus_writel(0x73 << 24, &par->bt->control);
451 sbus_writel(0x07 << 24, &par->bt->addr);
452 sbus_writel(0x00 << 24, &par->bt->control);
453
454 tcx_reset(info);
455
456 tcx_blank(FB_BLANK_UNBLANK, info);
457
458 if (fb_alloc_cmap(&info->cmap, 256, 0))
459 goto out_unmap_regs;
460
461 fb_set_cmap(&info->cmap, info);
462 tcx_init_fix(info, linebytes);
463
464 err = register_framebuffer(info);
465 if (err < 0)
466 goto out_dealloc_cmap;
467
468 dev_set_drvdata(&op->dev, info);
469
470 printk(KERN_INFO "%pOF: TCX at %lx:%lx, %s\n",
471 dp,
472 par->which_io,
473 info->fix.smem_start,
474 par->lowdepth ? "8-bit only" : "24-bit depth");
475
476 return 0;
477
478out_dealloc_cmap:
479 fb_dealloc_cmap(&info->cmap);
480
481out_unmap_regs:
482 tcx_unmap_regs(op, info, par);
483 framebuffer_release(info);
484
485out_err:
486 return err;
487}
488
489static int tcx_remove(struct platform_device *op)
490{
491 struct fb_info *info = dev_get_drvdata(&op->dev);
492 struct tcx_par *par = info->par;
493
494 unregister_framebuffer(info);
495 fb_dealloc_cmap(&info->cmap);
496
497 tcx_unmap_regs(op, info, par);
498
499 framebuffer_release(info);
500
501 return 0;
502}
503
504static const struct of_device_id tcx_match[] = {
505 {
506 .name = "SUNW,tcx",
507 },
508 {},
509};
510MODULE_DEVICE_TABLE(of, tcx_match);
511
512static struct platform_driver tcx_driver = {
513 .driver = {
514 .name = "tcx",
515 .of_match_table = tcx_match,
516 },
517 .probe = tcx_probe,
518 .remove = tcx_remove,
519};
520
521static int __init tcx_init(void)
522{
523 if (fb_get_options("tcxfb", NULL))
524 return -ENODEV;
525
526 return platform_driver_register(&tcx_driver);
527}
528
529static void __exit tcx_exit(void)
530{
531 platform_driver_unregister(&tcx_driver);
532}
533
534module_init(tcx_init);
535module_exit(tcx_exit);
536
537MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
538MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
539MODULE_VERSION("2.0");
540MODULE_LICENSE("GPL");
541
