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1 | /* |
2 | * linux/drivers/video/hitfb.c -- Hitachi LCD frame buffer device |
3 | * |
4 | * (C) 1999 Mihai Spatar |
5 | * (C) 2000 YAEGASHI Takeshi |
6 | * (C) 2003, 2004 Paul Mundt |
7 | * (C) 2003, 2004, 2006 Andriy Skulysh |
8 | * |
9 | * This file is subject to the terms and conditions of the GNU General Public |
10 | * License. See the file COPYING in the main directory of this archive for |
11 | * more details. |
12 | */ |
13 | |
14 | #include <linux/module.h> |
15 | #include <linux/kernel.h> |
16 | #include <linux/errno.h> |
17 | #include <linux/string.h> |
18 | #include <linux/mm.h> |
19 | #include <linux/delay.h> |
20 | #include <linux/init.h> |
21 | #include <linux/platform_device.h> |
22 | #include <linux/fb.h> |
23 | |
24 | #include <asm/machvec.h> |
25 | #include <asm/uaccess.h> |
26 | #include <asm/pgtable.h> |
27 | #include <asm/io.h> |
28 | #include <asm/hd64461.h> |
29 | #include <cpu/dac.h> |
30 | |
31 | #define WIDTH 640 |
32 | |
33 | static struct fb_var_screeninfo hitfb_var __initdata = { |
34 | .activate = FB_ACTIVATE_NOW, |
35 | .height = -1, |
36 | .width = -1, |
37 | .vmode = FB_VMODE_NONINTERLACED, |
38 | }; |
39 | |
40 | static struct fb_fix_screeninfo hitfb_fix __initdata = { |
41 | .id = "Hitachi HD64461", |
42 | .type = FB_TYPE_PACKED_PIXELS, |
43 | .accel = FB_ACCEL_NONE, |
44 | }; |
45 | |
46 | static inline void hitfb_accel_wait(void) |
47 | { |
48 | while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ; |
49 | } |
50 | |
51 | static inline void hitfb_accel_start(int truecolor) |
52 | { |
53 | if (truecolor) { |
54 | fb_writew(6, HD64461_GRCFGR); |
55 | } else { |
56 | fb_writew(7, HD64461_GRCFGR); |
57 | } |
58 | } |
59 | |
60 | static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy, |
61 | u16 width, u16 height) |
62 | { |
63 | u32 saddr = WIDTH * dy + dx; |
64 | if (truecolor) |
65 | saddr <<= 1; |
66 | |
67 | fb_writew(width-1, HD64461_BBTDWR); |
68 | fb_writew(height-1, HD64461_BBTDHR); |
69 | |
70 | fb_writew(saddr & 0xffff, HD64461_BBTDSARL); |
71 | fb_writew(saddr >> 16, HD64461_BBTDSARH); |
72 | |
73 | } |
74 | |
75 | static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx, |
76 | u16 dy, u16 width, u16 height, u16 rop, |
77 | u32 mask_addr) |
78 | { |
79 | u32 saddr, daddr; |
80 | u32 maddr = 0; |
81 | |
82 | height--; |
83 | width--; |
84 | fb_writew(rop, HD64461_BBTROPR); |
85 | if ((sy < dy) || ((sy == dy) && (sx <= dx))) { |
86 | saddr = WIDTH * (sy + height) + sx + width; |
87 | daddr = WIDTH * (dy + height) + dx + width; |
88 | if (mask_addr) { |
89 | if (truecolor) |
90 | maddr = ((width >> 3) + 1) * (height + 1) - 1; |
91 | else |
92 | maddr = |
93 | (((width >> 4) + 1) * (height + 1) - 1) * 2; |
94 | |
95 | fb_writew((1 << 5) | 1, HD64461_BBTMDR); |
96 | } else |
97 | fb_writew(1, HD64461_BBTMDR); |
98 | } else { |
99 | saddr = WIDTH * sy + sx; |
100 | daddr = WIDTH * dy + dx; |
101 | if (mask_addr) { |
102 | fb_writew((1 << 5), HD64461_BBTMDR); |
103 | } else { |
104 | fb_writew(0, HD64461_BBTMDR); |
105 | } |
106 | } |
107 | if (truecolor) { |
108 | saddr <<= 1; |
109 | daddr <<= 1; |
110 | } |
111 | fb_writew(width, HD64461_BBTDWR); |
112 | fb_writew(height, HD64461_BBTDHR); |
113 | fb_writew(saddr & 0xffff, HD64461_BBTSSARL); |
114 | fb_writew(saddr >> 16, HD64461_BBTSSARH); |
115 | fb_writew(daddr & 0xffff, HD64461_BBTDSARL); |
116 | fb_writew(daddr >> 16, HD64461_BBTDSARH); |
117 | if (mask_addr) { |
118 | maddr += mask_addr; |
119 | fb_writew(maddr & 0xffff, HD64461_BBTMARL); |
120 | fb_writew(maddr >> 16, HD64461_BBTMARH); |
121 | } |
122 | hitfb_accel_start(truecolor); |
123 | } |
124 | |
125 | static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect) |
126 | { |
127 | if (rect->rop != ROP_COPY) |
128 | cfb_fillrect(p, rect); |
129 | else { |
130 | hitfb_accel_wait(); |
131 | fb_writew(0x00f0, HD64461_BBTROPR); |
132 | fb_writew(16, HD64461_BBTMDR); |
133 | |
134 | if (p->var.bits_per_pixel == 16) { |
135 | fb_writew(((u32 *) (p->pseudo_palette))[rect->color], |
136 | HD64461_GRSCR); |
137 | hitfb_accel_set_dest(1, rect->dx, rect->dy, rect->width, |
138 | rect->height); |
139 | hitfb_accel_start(1); |
140 | } else { |
141 | fb_writew(rect->color, HD64461_GRSCR); |
142 | hitfb_accel_set_dest(0, rect->dx, rect->dy, rect->width, |
143 | rect->height); |
144 | hitfb_accel_start(0); |
145 | } |
146 | } |
147 | } |
148 | |
149 | static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area) |
150 | { |
151 | hitfb_accel_wait(); |
152 | hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy, |
153 | area->dx, area->dy, area->width, area->height, |
154 | 0x00cc, 0); |
155 | } |
156 | |
157 | static int hitfb_pan_display(struct fb_var_screeninfo *var, |
158 | struct fb_info *info) |
159 | { |
160 | int xoffset = var->xoffset; |
161 | int yoffset = var->yoffset; |
162 | |
163 | if (xoffset != 0) |
164 | return -EINVAL; |
165 | |
166 | fb_writew((yoffset*info->fix.line_length)>>10, HD64461_LCDCBAR); |
167 | |
168 | return 0; |
169 | } |
170 | |
171 | int hitfb_blank(int blank_mode, struct fb_info *info) |
172 | { |
173 | unsigned short v; |
174 | |
175 | if (blank_mode) { |
176 | v = fb_readw(HD64461_LDR1); |
177 | v &= ~HD64461_LDR1_DON; |
178 | fb_writew(v, HD64461_LDR1); |
179 | |
180 | v = fb_readw(HD64461_LCDCCR); |
181 | v |= HD64461_LCDCCR_MOFF; |
182 | fb_writew(v, HD64461_LCDCCR); |
183 | |
184 | v = fb_readw(HD64461_STBCR); |
185 | v |= HD64461_STBCR_SLCDST; |
186 | fb_writew(v, HD64461_STBCR); |
187 | } else { |
188 | v = fb_readw(HD64461_STBCR); |
189 | v &= ~HD64461_STBCR_SLCDST; |
190 | fb_writew(v, HD64461_STBCR); |
191 | |
192 | v = fb_readw(HD64461_LCDCCR); |
193 | v &= ~(HD64461_LCDCCR_MOFF | HD64461_LCDCCR_STREQ); |
194 | fb_writew(v, HD64461_LCDCCR); |
195 | |
196 | do { |
197 | v = fb_readw(HD64461_LCDCCR); |
198 | } while(v&HD64461_LCDCCR_STBACK); |
199 | |
200 | v = fb_readw(HD64461_LDR1); |
201 | v |= HD64461_LDR1_DON; |
202 | fb_writew(v, HD64461_LDR1); |
203 | } |
204 | return 0; |
205 | } |
206 | |
207 | static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
208 | unsigned blue, unsigned transp, struct fb_info *info) |
209 | { |
210 | if (regno >= 256) |
211 | return 1; |
212 | |
213 | switch (info->var.bits_per_pixel) { |
214 | case 8: |
215 | fb_writew(regno << 8, HD64461_CPTWAR); |
216 | fb_writew(red >> 10, HD64461_CPTWDR); |
217 | fb_writew(green >> 10, HD64461_CPTWDR); |
218 | fb_writew(blue >> 10, HD64461_CPTWDR); |
219 | break; |
220 | case 16: |
221 | if (regno >= 16) |
222 | return 1; |
223 | ((u32 *) (info->pseudo_palette))[regno] = |
224 | ((red & 0xf800)) | |
225 | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); |
226 | break; |
227 | } |
228 | return 0; |
229 | } |
230 | |
231 | static int hitfb_sync(struct fb_info *info) |
232 | { |
233 | hitfb_accel_wait(); |
234 | |
235 | return 0; |
236 | } |
237 | |
238 | static int hitfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
239 | { |
240 | int maxy; |
241 | |
242 | var->xres = info->var.xres; |
243 | var->xres_virtual = info->var.xres; |
244 | var->yres = info->var.yres; |
245 | |
246 | if ((var->bits_per_pixel != 8) && (var->bits_per_pixel != 16)) |
247 | var->bits_per_pixel = info->var.bits_per_pixel; |
248 | |
249 | if (var->yres_virtual < var->yres) |
250 | var->yres_virtual = var->yres; |
251 | |
252 | maxy = info->fix.smem_len / var->xres; |
253 | |
254 | if (var->bits_per_pixel == 16) |
255 | maxy /= 2; |
256 | |
257 | if (var->yres_virtual > maxy) |
258 | var->yres_virtual = maxy; |
259 | |
260 | var->xoffset = 0; |
261 | var->yoffset = 0; |
262 | |
263 | switch (var->bits_per_pixel) { |
264 | case 8: |
265 | var->red.offset = 0; |
266 | var->red.length = 8; |
267 | var->green.offset = 0; |
268 | var->green.length = 8; |
269 | var->blue.offset = 0; |
270 | var->blue.length = 8; |
271 | var->transp.offset = 0; |
272 | var->transp.length = 0; |
273 | break; |
274 | case 16: /* RGB 565 */ |
275 | var->red.offset = 11; |
276 | var->red.length = 5; |
277 | var->green.offset = 5; |
278 | var->green.length = 6; |
279 | var->blue.offset = 0; |
280 | var->blue.length = 5; |
281 | var->transp.offset = 0; |
282 | var->transp.length = 0; |
283 | break; |
284 | } |
285 | |
286 | return 0; |
287 | } |
288 | |
289 | static int hitfb_set_par(struct fb_info *info) |
290 | { |
291 | unsigned short ldr3; |
292 | |
293 | switch (info->var.bits_per_pixel) { |
294 | case 8: |
295 | info->fix.line_length = info->var.xres; |
296 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |
297 | info->fix.ypanstep = 16; |
298 | break; |
299 | case 16: |
300 | info->fix.line_length = info->var.xres*2; |
301 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
302 | info->fix.ypanstep = 8; |
303 | break; |
304 | } |
305 | |
306 | fb_writew(info->fix.line_length, HD64461_LCDCLOR); |
307 | ldr3 = fb_readw(HD64461_LDR3); |
308 | ldr3 &= ~15; |
309 | ldr3 |= (info->var.bits_per_pixel == 8) ? 4 : 8; |
310 | fb_writew(ldr3, HD64461_LDR3); |
311 | return 0; |
312 | } |
313 | |
314 | static struct fb_ops hitfb_ops = { |
315 | .owner = THIS_MODULE, |
316 | .fb_check_var = hitfb_check_var, |
317 | .fb_set_par = hitfb_set_par, |
318 | .fb_setcolreg = hitfb_setcolreg, |
319 | .fb_blank = hitfb_blank, |
320 | .fb_sync = hitfb_sync, |
321 | .fb_pan_display = hitfb_pan_display, |
322 | .fb_fillrect = hitfb_fillrect, |
323 | .fb_copyarea = hitfb_copyarea, |
324 | .fb_imageblit = cfb_imageblit, |
325 | }; |
326 | |
327 | static int __devinit hitfb_probe(struct platform_device *dev) |
328 | { |
329 | unsigned short lcdclor, ldr3, ldvndr; |
330 | struct fb_info *info; |
331 | int ret; |
332 | |
333 | if (fb_get_options("hitfb", NULL)) |
334 | return -ENODEV; |
335 | |
336 | hitfb_fix.mmio_start = HD64461_IO_OFFSET(0x1000); |
337 | hitfb_fix.mmio_len = 0x1000; |
338 | hitfb_fix.smem_start = HD64461_IO_OFFSET(0x02000000); |
339 | hitfb_fix.smem_len = 512 * 1024; |
340 | |
341 | lcdclor = fb_readw(HD64461_LCDCLOR); |
342 | ldvndr = fb_readw(HD64461_LDVNDR); |
343 | ldr3 = fb_readw(HD64461_LDR3); |
344 | |
345 | switch (ldr3 & 15) { |
346 | default: |
347 | case 4: |
348 | hitfb_var.bits_per_pixel = 8; |
349 | hitfb_var.xres = lcdclor; |
350 | break; |
351 | case 8: |
352 | hitfb_var.bits_per_pixel = 16; |
353 | hitfb_var.xres = lcdclor / 2; |
354 | break; |
355 | } |
356 | hitfb_fix.line_length = lcdclor; |
357 | hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ? |
358 | FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; |
359 | hitfb_var.yres = ldvndr + 1; |
360 | hitfb_var.xres_virtual = hitfb_var.xres; |
361 | hitfb_var.yres_virtual = hitfb_fix.smem_len / lcdclor; |
362 | switch (hitfb_var.bits_per_pixel) { |
363 | case 8: |
364 | hitfb_var.red.offset = 0; |
365 | hitfb_var.red.length = 8; |
366 | hitfb_var.green.offset = 0; |
367 | hitfb_var.green.length = 8; |
368 | hitfb_var.blue.offset = 0; |
369 | hitfb_var.blue.length = 8; |
370 | hitfb_var.transp.offset = 0; |
371 | hitfb_var.transp.length = 0; |
372 | break; |
373 | case 16: /* RGB 565 */ |
374 | hitfb_var.red.offset = 11; |
375 | hitfb_var.red.length = 5; |
376 | hitfb_var.green.offset = 5; |
377 | hitfb_var.green.length = 6; |
378 | hitfb_var.blue.offset = 0; |
379 | hitfb_var.blue.length = 5; |
380 | hitfb_var.transp.offset = 0; |
381 | hitfb_var.transp.length = 0; |
382 | break; |
383 | } |
384 | |
385 | info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev); |
386 | if (unlikely(!info)) |
387 | return -ENOMEM; |
388 | |
389 | info->fbops = &hitfb_ops; |
390 | info->var = hitfb_var; |
391 | info->fix = hitfb_fix; |
392 | info->pseudo_palette = info->par; |
393 | info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN | |
394 | FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_COPYAREA; |
395 | |
396 | info->screen_base = (void *)hitfb_fix.smem_start; |
397 | |
398 | ret = fb_alloc_cmap(&info->cmap, 256, 0); |
399 | if (unlikely(ret < 0)) |
400 | goto err_fb; |
401 | |
402 | ret = register_framebuffer(info); |
403 | if (unlikely(ret < 0)) |
404 | goto err; |
405 | |
406 | platform_set_drvdata(dev, info); |
407 | |
408 | printk(KERN_INFO "fb%d: %s frame buffer device\n", |
409 | info->node, info->fix.id); |
410 | |
411 | return 0; |
412 | |
413 | err: |
414 | fb_dealloc_cmap(&info->cmap); |
415 | err_fb: |
416 | framebuffer_release(info); |
417 | return ret; |
418 | } |
419 | |
420 | static int __exit hitfb_remove(struct platform_device *dev) |
421 | { |
422 | struct fb_info *info = platform_get_drvdata(dev); |
423 | |
424 | unregister_framebuffer(info); |
425 | fb_dealloc_cmap(&info->cmap); |
426 | framebuffer_release(info); |
427 | |
428 | return 0; |
429 | } |
430 | |
431 | static int hitfb_suspend(struct device *dev) |
432 | { |
433 | u16 v; |
434 | |
435 | hitfb_blank(1,0); |
436 | v = fb_readw(HD64461_STBCR); |
437 | v |= HD64461_STBCR_SLCKE_IST; |
438 | fb_writew(v, HD64461_STBCR); |
439 | |
440 | return 0; |
441 | } |
442 | |
443 | static int hitfb_resume(struct device *dev) |
444 | { |
445 | u16 v; |
446 | |
447 | v = fb_readw(HD64461_STBCR); |
448 | v &= ~HD64461_STBCR_SLCKE_OST; |
449 | msleep(100); |
450 | v = fb_readw(HD64461_STBCR); |
451 | v &= ~HD64461_STBCR_SLCKE_IST; |
452 | fb_writew(v, HD64461_STBCR); |
453 | hitfb_blank(0,0); |
454 | |
455 | return 0; |
456 | } |
457 | |
458 | static const struct dev_pm_ops hitfb_dev_pm_ops = { |
459 | .suspend = hitfb_suspend, |
460 | .resume = hitfb_resume, |
461 | }; |
462 | |
463 | static struct platform_driver hitfb_driver = { |
464 | .probe = hitfb_probe, |
465 | .remove = __exit_p(hitfb_remove), |
466 | .driver = { |
467 | .name = "hitfb", |
468 | .owner = THIS_MODULE, |
469 | .pm = &hitfb_dev_pm_ops, |
470 | }, |
471 | }; |
472 | |
473 | static struct platform_device hitfb_device = { |
474 | .name = "hitfb", |
475 | .id = -1, |
476 | }; |
477 | |
478 | static int __init hitfb_init(void) |
479 | { |
480 | int ret; |
481 | |
482 | ret = platform_driver_register(&hitfb_driver); |
483 | if (!ret) { |
484 | ret = platform_device_register(&hitfb_device); |
485 | if (ret) |
486 | platform_driver_unregister(&hitfb_driver); |
487 | } |
488 | return ret; |
489 | } |
490 | |
491 | |
492 | static void __exit hitfb_exit(void) |
493 | { |
494 | platform_device_unregister(&hitfb_device); |
495 | platform_driver_unregister(&hitfb_driver); |
496 | } |
497 | |
498 | module_init(hitfb_init); |
499 | module_exit(hitfb_exit); |
500 | |
501 | MODULE_LICENSE("GPL"); |
502 |
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