tve:rk1000:modify suspend and resume condition
[firefly-linux-kernel-4.4.55.git] / drivers / video / hitfb.c
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 = {
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 = {
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 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 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         = 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");