1 /*
2 * drivers/mb862xx/mb862xxfb.c
3 *
4 * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver
5 *
6 * (C) 2008 Anatolij Gustschin <agust@denx.de>
7 * DENX Software Engineering
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 */
14
15 #undef DEBUG
16
17 #include <linux/fb.h>
18 #include <linux/delay.h>
19 #include <linux/init.h>
20 #include <linux/interrupt.h>
21 #include <linux/pci.h>
22 #if defined(CONFIG_PPC_OF)
23 #include <linux/of_platform.h>
24 #endif
25 #include "mb862xxfb.h"
26 #include "mb862xx_reg.h"
27
28 #define NR_PALETTE 256
29 #define MB862XX_MEM_SIZE 0x1000000
30 #define CORALP_MEM_SIZE 0x4000000
31 #define CARMINE_MEM_SIZE 0x8000000
32 #define DRV_NAME "mb862xxfb"
33
34 #if defined(CONFIG_LWMON5)
35 static struct mb862xx_gc_mode lwmon5_gc_mode = {
36 /* Mode for Sharp LQ104V1DG61 TFT LCD Panel */
37 { "640x480", 60, 640, 480, 40000, 48, 16, 32, 11, 96, 2, 0, 0, 0 },
38 /* 16 bits/pixel, 32MB, 100MHz, SDRAM memory mode value */
39 16, 0x2000000, GC_CCF_COT_100, 0x414fb7f2
40 };
41 #endif
42
43 #if defined(CONFIG_SOCRATES)
44 static struct mb862xx_gc_mode socrates_gc_mode = {
45 /* Mode for Prime View PM070WL4 TFT LCD Panel */
46 { "800x480", 45, 800, 480, 40000, 86, 42, 33, 10, 128, 2, 0, 0, 0 },
47 /* 16 bits/pixel, 16MB, 133MHz, SDRAM memory mode value */
48 16, 0x1000000, GC_CCF_COT_133, 0x4157ba63
49 };
50 #endif
51
52 /* Helpers */
h_total(struct fb_var_screeninfo * var)53 static inline int h_total(struct fb_var_screeninfo *var)
54 {
55 return var->xres + var->left_margin +
56 var->right_margin + var->hsync_len;
57 }
58
v_total(struct fb_var_screeninfo * var)59 static inline int v_total(struct fb_var_screeninfo *var)
60 {
61 return var->yres + var->upper_margin +
62 var->lower_margin + var->vsync_len;
63 }
64
hsp(struct fb_var_screeninfo * var)65 static inline int hsp(struct fb_var_screeninfo *var)
66 {
67 return var->xres + var->right_margin - 1;
68 }
69
vsp(struct fb_var_screeninfo * var)70 static inline int vsp(struct fb_var_screeninfo *var)
71 {
72 return var->yres + var->lower_margin - 1;
73 }
74
d_pitch(struct fb_var_screeninfo * var)75 static inline int d_pitch(struct fb_var_screeninfo *var)
76 {
77 return var->xres * var->bits_per_pixel / 8;
78 }
79
chan_to_field(unsigned int chan,struct fb_bitfield * bf)80 static inline unsigned int chan_to_field(unsigned int chan,
81 struct fb_bitfield *bf)
82 {
83 chan &= 0xffff;
84 chan >>= 16 - bf->length;
85 return chan << bf->offset;
86 }
87
mb862xxfb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)88 static int mb862xxfb_setcolreg(unsigned regno,
89 unsigned red, unsigned green, unsigned blue,
90 unsigned transp, struct fb_info *info)
91 {
92 struct mb862xxfb_par *par = info->par;
93 unsigned int val;
94
95 switch (info->fix.visual) {
96 case FB_VISUAL_TRUECOLOR:
97 if (regno < 16) {
98 val = chan_to_field(red, &info->var.red);
99 val |= chan_to_field(green, &info->var.green);
100 val |= chan_to_field(blue, &info->var.blue);
101 par->pseudo_palette[regno] = val;
102 }
103 break;
104 case FB_VISUAL_PSEUDOCOLOR:
105 if (regno < 256) {
106 val = (red >> 8) << 16;
107 val |= (green >> 8) << 8;
108 val |= blue >> 8;
109 outreg(disp, GC_L0PAL0 + (regno * 4), val);
110 }
111 break;
112 default:
113 return 1; /* unsupported type */
114 }
115 return 0;
116 }
117
mb862xxfb_check_var(struct fb_var_screeninfo * var,struct fb_info * fbi)118 static int mb862xxfb_check_var(struct fb_var_screeninfo *var,
119 struct fb_info *fbi)
120 {
121 unsigned long tmp;
122
123 if (fbi->dev)
124 dev_dbg(fbi->dev, "%s\n", __func__);
125
126 /* check if these values fit into the registers */
127 if (var->hsync_len > 255 || var->vsync_len > 255)
128 return -EINVAL;
129
130 if ((var->xres + var->right_margin) >= 4096)
131 return -EINVAL;
132
133 if ((var->yres + var->lower_margin) > 4096)
134 return -EINVAL;
135
136 if (h_total(var) > 4096 || v_total(var) > 4096)
137 return -EINVAL;
138
139 if (var->xres_virtual > 4096 || var->yres_virtual > 4096)
140 return -EINVAL;
141
142 if (var->bits_per_pixel <= 8)
143 var->bits_per_pixel = 8;
144 else if (var->bits_per_pixel <= 16)
145 var->bits_per_pixel = 16;
146 else if (var->bits_per_pixel <= 32)
147 var->bits_per_pixel = 32;
148
149 /*
150 * can cope with 8,16 or 24/32bpp if resulting
151 * pitch is divisible by 64 without remainder
152 */
153 if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT) {
154 int r;
155
156 var->bits_per_pixel = 0;
157 do {
158 var->bits_per_pixel += 8;
159 r = d_pitch(&fbi->var) % GC_L0M_L0W_UNIT;
160 } while (r && var->bits_per_pixel <= 32);
161
162 if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT)
163 return -EINVAL;
164 }
165
166 /* line length is going to be 128 bit aligned */
167 tmp = (var->xres * var->bits_per_pixel) / 8;
168 if ((tmp & 15) != 0)
169 return -EINVAL;
170
171 /* set r/g/b positions and validate bpp */
172 switch (var->bits_per_pixel) {
173 case 8:
174 var->red.length = var->bits_per_pixel;
175 var->green.length = var->bits_per_pixel;
176 var->blue.length = var->bits_per_pixel;
177 var->red.offset = 0;
178 var->green.offset = 0;
179 var->blue.offset = 0;
180 var->transp.length = 0;
181 break;
182 case 16:
183 var->red.length = 5;
184 var->green.length = 5;
185 var->blue.length = 5;
186 var->red.offset = 10;
187 var->green.offset = 5;
188 var->blue.offset = 0;
189 var->transp.length = 0;
190 break;
191 case 24:
192 case 32:
193 var->transp.length = 8;
194 var->red.length = 8;
195 var->green.length = 8;
196 var->blue.length = 8;
197 var->transp.offset = 24;
198 var->red.offset = 16;
199 var->green.offset = 8;
200 var->blue.offset = 0;
201 break;
202 default:
203 return -EINVAL;
204 }
205 return 0;
206 }
207
208 /*
209 * set display parameters
210 */
mb862xxfb_set_par(struct fb_info * fbi)211 static int mb862xxfb_set_par(struct fb_info *fbi)
212 {
213 struct mb862xxfb_par *par = fbi->par;
214 unsigned long reg, sc;
215
216 dev_dbg(par->dev, "%s\n", __func__);
217
218 if (par->pre_init)
219 return 0;
220
221 /* disp off */
222 reg = inreg(disp, GC_DCM1);
223 reg &= ~GC_DCM01_DEN;
224 outreg(disp, GC_DCM1, reg);
225
226 /* set display reference clock div. */
227 sc = par->refclk / (1000000 / fbi->var.pixclock) - 1;
228 reg = inreg(disp, GC_DCM1);
229 reg &= ~(GC_DCM01_CKS | GC_DCM01_RESV | GC_DCM01_SC);
230 reg |= sc << 8;
231 outreg(disp, GC_DCM1, reg);
232 dev_dbg(par->dev, "SC 0x%lx\n", sc);
233
234 /* disp dimension, format */
235 reg = pack(d_pitch(&fbi->var) / GC_L0M_L0W_UNIT,
236 (fbi->var.yres - 1));
237 if (fbi->var.bits_per_pixel == 16)
238 reg |= GC_L0M_L0C_16;
239 outreg(disp, GC_L0M, reg);
240
241 if (fbi->var.bits_per_pixel == 32) {
242 reg = inreg(disp, GC_L0EM);
243 outreg(disp, GC_L0EM, reg | GC_L0EM_L0EC_24);
244 }
245 outreg(disp, GC_WY_WX, 0);
246 reg = pack(fbi->var.yres - 1, fbi->var.xres);
247 outreg(disp, GC_WH_WW, reg);
248 outreg(disp, GC_L0OA0, 0);
249 outreg(disp, GC_L0DA0, 0);
250 outreg(disp, GC_L0DY_L0DX, 0);
251 outreg(disp, GC_L0WY_L0WX, 0);
252 outreg(disp, GC_L0WH_L0WW, reg);
253
254 /* both HW-cursors off */
255 reg = inreg(disp, GC_CPM_CUTC);
256 reg &= ~(GC_CPM_CEN0 | GC_CPM_CEN1);
257 outreg(disp, GC_CPM_CUTC, reg);
258
259 /* timings */
260 reg = pack(fbi->var.xres - 1, fbi->var.xres - 1);
261 outreg(disp, GC_HDB_HDP, reg);
262 reg = pack((fbi->var.yres - 1), vsp(&fbi->var));
263 outreg(disp, GC_VDP_VSP, reg);
264 reg = ((fbi->var.vsync_len - 1) << 24) |
265 pack((fbi->var.hsync_len - 1), hsp(&fbi->var));
266 outreg(disp, GC_VSW_HSW_HSP, reg);
267 outreg(disp, GC_HTP, pack(h_total(&fbi->var) - 1, 0));
268 outreg(disp, GC_VTR, pack(v_total(&fbi->var) - 1, 0));
269
270 /* display on */
271 reg = inreg(disp, GC_DCM1);
272 reg |= GC_DCM01_DEN | GC_DCM01_L0E;
273 reg &= ~GC_DCM01_ESY;
274 outreg(disp, GC_DCM1, reg);
275 return 0;
276 }
277
mb862xxfb_pan(struct fb_var_screeninfo * var,struct fb_info * info)278 static int mb862xxfb_pan(struct fb_var_screeninfo *var,
279 struct fb_info *info)
280 {
281 struct mb862xxfb_par *par = info->par;
282 unsigned long reg;
283
284 reg = pack(var->yoffset, var->xoffset);
285 outreg(disp, GC_L0WY_L0WX, reg);
286
287 reg = pack(var->yres_virtual, var->xres_virtual);
288 outreg(disp, GC_L0WH_L0WW, reg);
289 return 0;
290 }
291
mb862xxfb_blank(int mode,struct fb_info * fbi)292 static int mb862xxfb_blank(int mode, struct fb_info *fbi)
293 {
294 struct mb862xxfb_par *par = fbi->par;
295 unsigned long reg;
296
297 dev_dbg(fbi->dev, "blank mode=%d\n", mode);
298
299 switch (mode) {
300 case FB_BLANK_POWERDOWN:
301 reg = inreg(disp, GC_DCM1);
302 reg &= ~GC_DCM01_DEN;
303 outreg(disp, GC_DCM1, reg);
304 break;
305 case FB_BLANK_UNBLANK:
306 reg = inreg(disp, GC_DCM1);
307 reg |= GC_DCM01_DEN;
308 outreg(disp, GC_DCM1, reg);
309 break;
310 case FB_BLANK_NORMAL:
311 case FB_BLANK_VSYNC_SUSPEND:
312 case FB_BLANK_HSYNC_SUSPEND:
313 default:
314 return 1;
315 }
316 return 0;
317 }
318
319 /* framebuffer ops */
320 static struct fb_ops mb862xxfb_ops = {
321 .owner = THIS_MODULE,
322 .fb_check_var = mb862xxfb_check_var,
323 .fb_set_par = mb862xxfb_set_par,
324 .fb_setcolreg = mb862xxfb_setcolreg,
325 .fb_blank = mb862xxfb_blank,
326 .fb_pan_display = mb862xxfb_pan,
327 .fb_fillrect = cfb_fillrect,
328 .fb_copyarea = cfb_copyarea,
329 .fb_imageblit = cfb_imageblit,
330 };
331
332 /* initialize fb_info data */
mb862xxfb_init_fbinfo(struct fb_info * fbi)333 static int mb862xxfb_init_fbinfo(struct fb_info *fbi)
334 {
335 struct mb862xxfb_par *par = fbi->par;
336 struct mb862xx_gc_mode *mode = par->gc_mode;
337 unsigned long reg;
338
339 fbi->fbops = &mb862xxfb_ops;
340 fbi->pseudo_palette = par->pseudo_palette;
341 fbi->screen_base = par->fb_base;
342 fbi->screen_size = par->mapped_vram;
343
344 strcpy(fbi->fix.id, DRV_NAME);
345 fbi->fix.smem_start = (unsigned long)par->fb_base_phys;
346 fbi->fix.smem_len = par->mapped_vram;
347 fbi->fix.mmio_start = (unsigned long)par->mmio_base_phys;
348 fbi->fix.mmio_len = par->mmio_len;
349 fbi->fix.accel = FB_ACCEL_NONE;
350 fbi->fix.type = FB_TYPE_PACKED_PIXELS;
351 fbi->fix.type_aux = 0;
352 fbi->fix.xpanstep = 1;
353 fbi->fix.ypanstep = 1;
354 fbi->fix.ywrapstep = 0;
355
356 reg = inreg(disp, GC_DCM1);
357 if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E) {
358 /* get the disp mode from active display cfg */
359 unsigned long sc = ((reg & GC_DCM01_SC) >> 8) + 1;
360 unsigned long hsp, vsp, ht, vt;
361
362 dev_dbg(par->dev, "using bootloader's disp. mode\n");
363 fbi->var.pixclock = (sc * 1000000) / par->refclk;
364 fbi->var.xres = (inreg(disp, GC_HDB_HDP) & 0x0fff) + 1;
365 reg = inreg(disp, GC_VDP_VSP);
366 fbi->var.yres = ((reg >> 16) & 0x0fff) + 1;
367 vsp = (reg & 0x0fff) + 1;
368 fbi->var.xres_virtual = fbi->var.xres;
369 fbi->var.yres_virtual = fbi->var.yres;
370 reg = inreg(disp, GC_L0EM);
371 if (reg & GC_L0EM_L0EC_24) {
372 fbi->var.bits_per_pixel = 32;
373 } else {
374 reg = inreg(disp, GC_L0M);
375 if (reg & GC_L0M_L0C_16)
376 fbi->var.bits_per_pixel = 16;
377 else
378 fbi->var.bits_per_pixel = 8;
379 }
380 reg = inreg(disp, GC_VSW_HSW_HSP);
381 fbi->var.hsync_len = ((reg & 0xff0000) >> 16) + 1;
382 fbi->var.vsync_len = ((reg & 0x3f000000) >> 24) + 1;
383 hsp = (reg & 0xffff) + 1;
384 ht = ((inreg(disp, GC_HTP) & 0xfff0000) >> 16) + 1;
385 fbi->var.right_margin = hsp - fbi->var.xres;
386 fbi->var.left_margin = ht - hsp - fbi->var.hsync_len;
387 vt = ((inreg(disp, GC_VTR) & 0xfff0000) >> 16) + 1;
388 fbi->var.lower_margin = vsp - fbi->var.yres;
389 fbi->var.upper_margin = vt - vsp - fbi->var.vsync_len;
390 } else if (mode) {
391 dev_dbg(par->dev, "using supplied mode\n");
392 fb_videomode_to_var(&fbi->var, (struct fb_videomode *)mode);
393 fbi->var.bits_per_pixel = mode->def_bpp ? mode->def_bpp : 8;
394 } else {
395 int ret;
396
397 ret = fb_find_mode(&fbi->var, fbi, "640x480-16@60",
398 NULL, 0, NULL, 16);
399 if (ret == 0 || ret == 4) {
400 dev_err(par->dev,
401 "failed to get initial mode\n");
402 return -EINVAL;
403 }
404 }
405
406 fbi->var.xoffset = 0;
407 fbi->var.yoffset = 0;
408 fbi->var.grayscale = 0;
409 fbi->var.nonstd = 0;
410 fbi->var.height = -1;
411 fbi->var.width = -1;
412 fbi->var.accel_flags = 0;
413 fbi->var.vmode = FB_VMODE_NONINTERLACED;
414 fbi->var.activate = FB_ACTIVATE_NOW;
415 fbi->flags = FBINFO_DEFAULT |
416 #ifdef __BIG_ENDIAN
417 FBINFO_FOREIGN_ENDIAN |
418 #endif
419 FBINFO_HWACCEL_XPAN |
420 FBINFO_HWACCEL_YPAN;
421
422 /* check and possibly fix bpp */
423 if ((fbi->fbops->fb_check_var)(&fbi->var, fbi))
424 dev_err(par->dev, "check_var() failed on initial setup?\n");
425
426 fbi->fix.visual = fbi->var.bits_per_pixel == 8 ?
427 FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
428 fbi->fix.line_length = (fbi->var.xres_virtual *
429 fbi->var.bits_per_pixel) / 8;
430 return 0;
431 }
432
433 /*
434 * show some display controller and cursor registers
435 */
mb862xxfb_show_dispregs(struct device * dev,struct device_attribute * attr,char * buf)436 static ssize_t mb862xxfb_show_dispregs(struct device *dev,
437 struct device_attribute *attr, char *buf)
438 {
439 struct fb_info *fbi = dev_get_drvdata(dev);
440 struct mb862xxfb_par *par = fbi->par;
441 char *ptr = buf;
442 unsigned int reg;
443
444 for (reg = GC_DCM0; reg <= GC_L0DY_L0DX; reg += 4)
445 ptr += sprintf(ptr, "%08x = %08x\n",
446 reg, inreg(disp, reg));
447
448 for (reg = GC_CPM_CUTC; reg <= GC_CUY1_CUX1; reg += 4)
449 ptr += sprintf(ptr, "%08x = %08x\n",
450 reg, inreg(disp, reg));
451
452 for (reg = GC_DCM1; reg <= GC_L0WH_L0WW; reg += 4)
453 ptr += sprintf(ptr, "%08x = %08x\n",
454 reg, inreg(disp, reg));
455
456 return ptr - buf;
457 }
458
459 static DEVICE_ATTR(dispregs, 0444, mb862xxfb_show_dispregs, NULL);
460
mb862xx_intr(int irq,void * dev_id)461 irqreturn_t mb862xx_intr(int irq, void *dev_id)
462 {
463 struct mb862xxfb_par *par = (struct mb862xxfb_par *) dev_id;
464 unsigned long reg_ist, mask;
465
466 if (!par)
467 return IRQ_NONE;
468
469 if (par->type == BT_CARMINE) {
470 /* Get Interrupt Status */
471 reg_ist = inreg(ctrl, GC_CTRL_STATUS);
472 mask = inreg(ctrl, GC_CTRL_INT_MASK);
473 if (reg_ist == 0)
474 return IRQ_HANDLED;
475
476 reg_ist &= mask;
477 if (reg_ist == 0)
478 return IRQ_HANDLED;
479
480 /* Clear interrupt status */
481 outreg(ctrl, 0x0, reg_ist);
482 } else {
483 /* Get status */
484 reg_ist = inreg(host, GC_IST);
485 mask = inreg(host, GC_IMASK);
486
487 reg_ist &= mask;
488 if (reg_ist == 0)
489 return IRQ_HANDLED;
490
491 /* Clear status */
492 outreg(host, GC_IST, ~reg_ist);
493 }
494 return IRQ_HANDLED;
495 }
496
497 #if defined(CONFIG_FB_MB862XX_LIME)
498 /*
499 * GDC (Lime, Coral(B/Q), Mint, ...) on host bus
500 */
mb862xx_gdc_init(struct mb862xxfb_par * par)501 static int mb862xx_gdc_init(struct mb862xxfb_par *par)
502 {
503 unsigned long ccf, mmr;
504 unsigned long ver, rev;
505
506 if (!par)
507 return -ENODEV;
508
509 #if defined(CONFIG_FB_PRE_INIT_FB)
510 par->pre_init = 1;
511 #endif
512 par->host = par->mmio_base;
513 par->i2c = par->mmio_base + MB862XX_I2C_BASE;
514 par->disp = par->mmio_base + MB862XX_DISP_BASE;
515 par->cap = par->mmio_base + MB862XX_CAP_BASE;
516 par->draw = par->mmio_base + MB862XX_DRAW_BASE;
517 par->geo = par->mmio_base + MB862XX_GEO_BASE;
518 par->pio = par->mmio_base + MB862XX_PIO_BASE;
519
520 par->refclk = GC_DISP_REFCLK_400;
521
522 ver = inreg(host, GC_CID);
523 rev = inreg(pio, GC_REVISION);
524 if ((ver == 0x303) && (rev & 0xffffff00) == 0x20050100) {
525 dev_info(par->dev, "Fujitsu Lime v1.%d found\n",
526 (int)rev & 0xff);
527 par->type = BT_LIME;
528 ccf = par->gc_mode ? par->gc_mode->ccf : GC_CCF_COT_100;
529 mmr = par->gc_mode ? par->gc_mode->mmr : 0x414fb7f2;
530 } else {
531 dev_info(par->dev, "? GDC, CID/Rev.: 0x%lx/0x%lx \n", ver, rev);
532 return -ENODEV;
533 }
534
535 if (!par->pre_init) {
536 outreg(host, GC_CCF, ccf);
537 udelay(200);
538 outreg(host, GC_MMR, mmr);
539 udelay(10);
540 }
541
542 /* interrupt status */
543 outreg(host, GC_IST, 0);
544 outreg(host, GC_IMASK, GC_INT_EN);
545 return 0;
546 }
547
of_platform_mb862xx_probe(struct of_device * ofdev,const struct of_device_id * id)548 static int __devinit of_platform_mb862xx_probe(struct of_device *ofdev,
549 const struct of_device_id *id)
550 {
551 struct device_node *np = ofdev->node;
552 struct device *dev = &ofdev->dev;
553 struct mb862xxfb_par *par;
554 struct fb_info *info;
555 struct resource res;
556 resource_size_t res_size;
557 unsigned long ret = -ENODEV;
558
559 if (of_address_to_resource(np, 0, &res)) {
560 dev_err(dev, "Invalid address\n");
561 return -ENXIO;
562 }
563
564 info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev);
565 if (info == NULL) {
566 dev_err(dev, "cannot allocate framebuffer\n");
567 return -ENOMEM;
568 }
569
570 par = info->par;
571 par->info = info;
572 par->dev = dev;
573
574 par->irq = irq_of_parse_and_map(np, 0);
575 if (par->irq == NO_IRQ) {
576 dev_err(dev, "failed to map irq\n");
577 ret = -ENODEV;
578 goto fbrel;
579 }
580
581 res_size = 1 + res.end - res.start;
582 par->res = request_mem_region(res.start, res_size, DRV_NAME);
583 if (par->res == NULL) {
584 dev_err(dev, "Cannot claim framebuffer/mmio\n");
585 ret = -ENXIO;
586 goto irqdisp;
587 }
588
589 #if defined(CONFIG_LWMON5)
590 par->gc_mode = &lwmon5_gc_mode;
591 #endif
592
593 #if defined(CONFIG_SOCRATES)
594 par->gc_mode = &socrates_gc_mode;
595 #endif
596
597 par->fb_base_phys = res.start;
598 par->mmio_base_phys = res.start + MB862XX_MMIO_BASE;
599 par->mmio_len = MB862XX_MMIO_SIZE;
600 if (par->gc_mode)
601 par->mapped_vram = par->gc_mode->max_vram;
602 else
603 par->mapped_vram = MB862XX_MEM_SIZE;
604
605 par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram);
606 if (par->fb_base == NULL) {
607 dev_err(dev, "Cannot map framebuffer\n");
608 goto rel_reg;
609 }
610
611 par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len);
612 if (par->mmio_base == NULL) {
613 dev_err(dev, "Cannot map registers\n");
614 goto fb_unmap;
615 }
616
617 dev_dbg(dev, "fb phys 0x%llx 0x%lx\n",
618 (u64)par->fb_base_phys, (ulong)par->mapped_vram);
619 dev_dbg(dev, "mmio phys 0x%llx 0x%lx, (irq = %d)\n",
620 (u64)par->mmio_base_phys, (ulong)par->mmio_len, par->irq);
621
622 if (mb862xx_gdc_init(par))
623 goto io_unmap;
624
625 if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED,
626 DRV_NAME, (void *)par)) {
627 dev_err(dev, "Cannot request irq\n");
628 goto io_unmap;
629 }
630
631 mb862xxfb_init_fbinfo(info);
632
633 if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) {
634 dev_err(dev, "Could not allocate cmap for fb_info.\n");
635 goto free_irq;
636 }
637
638 if ((info->fbops->fb_set_par)(info))
639 dev_err(dev, "set_var() failed on initial setup?\n");
640
641 if (register_framebuffer(info)) {
642 dev_err(dev, "failed to register framebuffer\n");
643 goto rel_cmap;
644 }
645
646 dev_set_drvdata(dev, info);
647
648 if (device_create_file(dev, &dev_attr_dispregs))
649 dev_err(dev, "Can't create sysfs regdump file\n");
650 return 0;
651
652 rel_cmap:
653 fb_dealloc_cmap(&info->cmap);
654 free_irq:
655 outreg(host, GC_IMASK, 0);
656 free_irq(par->irq, (void *)par);
657 io_unmap:
658 iounmap(par->mmio_base);
659 fb_unmap:
660 iounmap(par->fb_base);
661 rel_reg:
662 release_mem_region(res.start, res_size);
663 irqdisp:
664 irq_dispose_mapping(par->irq);
665 fbrel:
666 dev_set_drvdata(dev, NULL);
667 framebuffer_release(info);
668 return ret;
669 }
670
of_platform_mb862xx_remove(struct of_device * ofdev)671 static int __devexit of_platform_mb862xx_remove(struct of_device *ofdev)
672 {
673 struct fb_info *fbi = dev_get_drvdata(&ofdev->dev);
674 struct mb862xxfb_par *par = fbi->par;
675 resource_size_t res_size = 1 + par->res->end - par->res->start;
676 unsigned long reg;
677
678 dev_dbg(fbi->dev, "%s release\n", fbi->fix.id);
679
680 /* display off */
681 reg = inreg(disp, GC_DCM1);
682 reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E);
683 outreg(disp, GC_DCM1, reg);
684
685 /* disable interrupts */
686 outreg(host, GC_IMASK, 0);
687
688 free_irq(par->irq, (void *)par);
689 irq_dispose_mapping(par->irq);
690
691 device_remove_file(&ofdev->dev, &dev_attr_dispregs);
692
693 unregister_framebuffer(fbi);
694 fb_dealloc_cmap(&fbi->cmap);
695
696 iounmap(par->mmio_base);
697 iounmap(par->fb_base);
698
699 dev_set_drvdata(&ofdev->dev, NULL);
700 release_mem_region(par->res->start, res_size);
701 framebuffer_release(fbi);
702 return 0;
703 }
704
705 /*
706 * common types
707 */
708 static struct of_device_id __devinitdata of_platform_mb862xx_tbl[] = {
709 { .compatible = "fujitsu,MB86276", },
710 { .compatible = "fujitsu,lime", },
711 { .compatible = "fujitsu,MB86277", },
712 { .compatible = "fujitsu,mint", },
713 { .compatible = "fujitsu,MB86293", },
714 { .compatible = "fujitsu,MB86294", },
715 { .compatible = "fujitsu,coral", },
716 { /* end */ }
717 };
718
719 static struct of_platform_driver of_platform_mb862xxfb_driver = {
720 .owner = THIS_MODULE,
721 .name = DRV_NAME,
722 .match_table = of_platform_mb862xx_tbl,
723 .probe = of_platform_mb862xx_probe,
724 .remove = __devexit_p(of_platform_mb862xx_remove),
725 };
726 #endif
727
728 #if defined(CONFIG_FB_MB862XX_PCI_GDC)
coralp_init(struct mb862xxfb_par * par)729 static int coralp_init(struct mb862xxfb_par *par)
730 {
731 int cn, ver;
732
733 par->host = par->mmio_base;
734 par->i2c = par->mmio_base + MB862XX_I2C_BASE;
735 par->disp = par->mmio_base + MB862XX_DISP_BASE;
736 par->cap = par->mmio_base + MB862XX_CAP_BASE;
737 par->draw = par->mmio_base + MB862XX_DRAW_BASE;
738 par->geo = par->mmio_base + MB862XX_GEO_BASE;
739 par->pio = par->mmio_base + MB862XX_PIO_BASE;
740
741 par->refclk = GC_DISP_REFCLK_400;
742
743 ver = inreg(host, GC_CID);
744 cn = (ver & GC_CID_CNAME_MSK) >> 8;
745 ver = ver & GC_CID_VERSION_MSK;
746 if (cn == 3) {
747 dev_info(par->dev, "Fujitsu Coral-%s GDC Rev.%d found\n",\
748 (ver == 6) ? "P" : (ver == 8) ? "PA" : "?",
749 par->pdev->revision);
750 outreg(host, GC_CCF, GC_CCF_CGE_166 | GC_CCF_COT_133);
751 udelay(200);
752 outreg(host, GC_MMR, GC_MMR_CORALP_EVB_VAL);
753 udelay(10);
754 /* Clear interrupt status */
755 outreg(host, GC_IST, 0);
756 } else {
757 return -ENODEV;
758 }
759 return 0;
760 }
761
init_dram_ctrl(struct mb862xxfb_par * par)762 static int init_dram_ctrl(struct mb862xxfb_par *par)
763 {
764 unsigned long i = 0;
765
766 /*
767 * Set io mode first! Spec. says IC may be destroyed
768 * if not set to SSTL2/LVCMOS before init.
769 */
770 outreg(dram_ctrl, GC_DCTL_IOCONT1_IOCONT0, GC_EVB_DCTL_IOCONT1_IOCONT0);
771
772 /* DRAM init */
773 outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD);
774 outreg(dram_ctrl, GC_DCTL_SETTIME1_EMODE, GC_EVB_DCTL_SETTIME1_EMODE);
775 outreg(dram_ctrl, GC_DCTL_REFRESH_SETTIME2,
776 GC_EVB_DCTL_REFRESH_SETTIME2);
777 outreg(dram_ctrl, GC_DCTL_RSV2_RSV1, GC_EVB_DCTL_RSV2_RSV1);
778 outreg(dram_ctrl, GC_DCTL_DDRIF2_DDRIF1, GC_EVB_DCTL_DDRIF2_DDRIF1);
779 outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES);
780
781 /* DLL reset done? */
782 while ((inreg(dram_ctrl, GC_DCTL_RSV0_STATES) & GC_DCTL_STATES_MSK)) {
783 udelay(GC_DCTL_INIT_WAIT_INTERVAL);
784 if (i++ > GC_DCTL_INIT_WAIT_CNT) {
785 dev_err(par->dev, "VRAM init failed.\n");
786 return -EINVAL;
787 }
788 }
789 outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD_AFT_RST);
790 outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES_AFT_RST);
791 return 0;
792 }
793
carmine_init(struct mb862xxfb_par * par)794 static int carmine_init(struct mb862xxfb_par *par)
795 {
796 unsigned long reg;
797
798 par->ctrl = par->mmio_base + MB86297_CTRL_BASE;
799 par->i2c = par->mmio_base + MB86297_I2C_BASE;
800 par->disp = par->mmio_base + MB86297_DISP0_BASE;
801 par->disp1 = par->mmio_base + MB86297_DISP1_BASE;
802 par->cap = par->mmio_base + MB86297_CAP0_BASE;
803 par->cap1 = par->mmio_base + MB86297_CAP1_BASE;
804 par->draw = par->mmio_base + MB86297_DRAW_BASE;
805 par->dram_ctrl = par->mmio_base + MB86297_DRAMCTRL_BASE;
806 par->wrback = par->mmio_base + MB86297_WRBACK_BASE;
807
808 par->refclk = GC_DISP_REFCLK_533;
809
810 /* warm up */
811 reg = GC_CTRL_CLK_EN_DRAM | GC_CTRL_CLK_EN_2D3D | GC_CTRL_CLK_EN_DISP0;
812 outreg(ctrl, GC_CTRL_CLK_ENABLE, reg);
813
814 /* check for engine module revision */
815 if (inreg(draw, GC_2D3D_REV) == GC_RE_REVISION)
816 dev_info(par->dev, "Fujitsu Carmine GDC Rev.%d found\n",
817 par->pdev->revision);
818 else
819 goto err_init;
820
821 reg &= ~GC_CTRL_CLK_EN_2D3D;
822 outreg(ctrl, GC_CTRL_CLK_ENABLE, reg);
823
824 /* set up vram */
825 if (init_dram_ctrl(par) < 0)
826 goto err_init;
827
828 outreg(ctrl, GC_CTRL_INT_MASK, 0);
829 return 0;
830
831 err_init:
832 outreg(ctrl, GC_CTRL_CLK_ENABLE, 0);
833 return -EINVAL;
834 }
835
mb862xx_pci_gdc_init(struct mb862xxfb_par * par)836 static inline int mb862xx_pci_gdc_init(struct mb862xxfb_par *par)
837 {
838 switch (par->type) {
839 case BT_CORALP:
840 return coralp_init(par);
841 case BT_CARMINE:
842 return carmine_init(par);
843 default:
844 return -ENODEV;
845 }
846 }
847
848 #define CHIP_ID(id) \
849 { PCI_DEVICE(PCI_VENDOR_ID_FUJITSU_LIMITED, id) }
850
851 static struct pci_device_id mb862xx_pci_tbl[] __devinitdata = {
852 /* MB86295/MB86296 */
853 CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALP),
854 CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALPA),
855 /* MB86297 */
856 CHIP_ID(PCI_DEVICE_ID_FUJITSU_CARMINE),
857 { 0, }
858 };
859
860 MODULE_DEVICE_TABLE(pci, mb862xx_pci_tbl);
861
mb862xx_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)862 static int __devinit mb862xx_pci_probe(struct pci_dev *pdev,
863 const struct pci_device_id *ent)
864 {
865 struct mb862xxfb_par *par;
866 struct fb_info *info;
867 struct device *dev = &pdev->dev;
868 int ret;
869
870 ret = pci_enable_device(pdev);
871 if (ret < 0) {
872 dev_err(dev, "Cannot enable PCI device\n");
873 goto out;
874 }
875
876 info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev);
877 if (!info) {
878 dev_err(dev, "framebuffer alloc failed\n");
879 ret = -ENOMEM;
880 goto dis_dev;
881 }
882
883 par = info->par;
884 par->info = info;
885 par->dev = dev;
886 par->pdev = pdev;
887 par->irq = pdev->irq;
888
889 ret = pci_request_regions(pdev, DRV_NAME);
890 if (ret < 0) {
891 dev_err(dev, "Cannot reserve region(s) for PCI device\n");
892 goto rel_fb;
893 }
894
895 switch (pdev->device) {
896 case PCI_DEVICE_ID_FUJITSU_CORALP:
897 case PCI_DEVICE_ID_FUJITSU_CORALPA:
898 par->fb_base_phys = pci_resource_start(par->pdev, 0);
899 par->mapped_vram = CORALP_MEM_SIZE;
900 par->mmio_base_phys = par->fb_base_phys + MB862XX_MMIO_BASE;
901 par->mmio_len = MB862XX_MMIO_SIZE;
902 par->type = BT_CORALP;
903 break;
904 case PCI_DEVICE_ID_FUJITSU_CARMINE:
905 par->fb_base_phys = pci_resource_start(par->pdev, 2);
906 par->mmio_base_phys = pci_resource_start(par->pdev, 3);
907 par->mmio_len = pci_resource_len(par->pdev, 3);
908 par->mapped_vram = CARMINE_MEM_SIZE;
909 par->type = BT_CARMINE;
910 break;
911 default:
912 /* should never occur */
913 goto rel_reg;
914 }
915
916 par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram);
917 if (par->fb_base == NULL) {
918 dev_err(dev, "Cannot map framebuffer\n");
919 goto rel_reg;
920 }
921
922 par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len);
923 if (par->mmio_base == NULL) {
924 dev_err(dev, "Cannot map registers\n");
925 ret = -EIO;
926 goto fb_unmap;
927 }
928
929 dev_dbg(dev, "fb phys 0x%llx 0x%lx\n",
930 (unsigned long long)par->fb_base_phys, (ulong)par->mapped_vram);
931 dev_dbg(dev, "mmio phys 0x%llx 0x%lx\n",
932 (unsigned long long)par->mmio_base_phys, (ulong)par->mmio_len);
933
934 if (mb862xx_pci_gdc_init(par))
935 goto io_unmap;
936
937 if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED | IRQF_SHARED,
938 DRV_NAME, (void *)par)) {
939 dev_err(dev, "Cannot request irq\n");
940 goto io_unmap;
941 }
942
943 mb862xxfb_init_fbinfo(info);
944
945 if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) {
946 dev_err(dev, "Could not allocate cmap for fb_info.\n");
947 ret = -ENOMEM;
948 goto free_irq;
949 }
950
951 if ((info->fbops->fb_set_par)(info))
952 dev_err(dev, "set_var() failed on initial setup?\n");
953
954 ret = register_framebuffer(info);
955 if (ret < 0) {
956 dev_err(dev, "failed to register framebuffer\n");
957 goto rel_cmap;
958 }
959
960 pci_set_drvdata(pdev, info);
961
962 if (device_create_file(dev, &dev_attr_dispregs))
963 dev_err(dev, "Can't create sysfs regdump file\n");
964
965 if (par->type == BT_CARMINE)
966 outreg(ctrl, GC_CTRL_INT_MASK, GC_CARMINE_INT_EN);
967 else
968 outreg(host, GC_IMASK, GC_INT_EN);
969
970 return 0;
971
972 rel_cmap:
973 fb_dealloc_cmap(&info->cmap);
974 free_irq:
975 free_irq(par->irq, (void *)par);
976 io_unmap:
977 iounmap(par->mmio_base);
978 fb_unmap:
979 iounmap(par->fb_base);
980 rel_reg:
981 pci_release_regions(pdev);
982 rel_fb:
983 framebuffer_release(info);
984 dis_dev:
985 pci_disable_device(pdev);
986 out:
987 return ret;
988 }
989
mb862xx_pci_remove(struct pci_dev * pdev)990 static void __devexit mb862xx_pci_remove(struct pci_dev *pdev)
991 {
992 struct fb_info *fbi = pci_get_drvdata(pdev);
993 struct mb862xxfb_par *par = fbi->par;
994 unsigned long reg;
995
996 dev_dbg(fbi->dev, "%s release\n", fbi->fix.id);
997
998 /* display off */
999 reg = inreg(disp, GC_DCM1);
1000 reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E);
1001 outreg(disp, GC_DCM1, reg);
1002
1003 if (par->type == BT_CARMINE) {
1004 outreg(ctrl, GC_CTRL_INT_MASK, 0);
1005 outreg(ctrl, GC_CTRL_CLK_ENABLE, 0);
1006 } else {
1007 outreg(host, GC_IMASK, 0);
1008 }
1009
1010 device_remove_file(&pdev->dev, &dev_attr_dispregs);
1011
1012 pci_set_drvdata(pdev, NULL);
1013 unregister_framebuffer(fbi);
1014 fb_dealloc_cmap(&fbi->cmap);
1015
1016 free_irq(par->irq, (void *)par);
1017 iounmap(par->mmio_base);
1018 iounmap(par->fb_base);
1019
1020 pci_release_regions(pdev);
1021 framebuffer_release(fbi);
1022 pci_disable_device(pdev);
1023 }
1024
1025 static struct pci_driver mb862xxfb_pci_driver = {
1026 .name = DRV_NAME,
1027 .id_table = mb862xx_pci_tbl,
1028 .probe = mb862xx_pci_probe,
1029 .remove = __devexit_p(mb862xx_pci_remove),
1030 };
1031 #endif
1032
mb862xxfb_init(void)1033 static int __devinit mb862xxfb_init(void)
1034 {
1035 int ret = -ENODEV;
1036
1037 #if defined(CONFIG_FB_MB862XX_LIME)
1038 ret = of_register_platform_driver(&of_platform_mb862xxfb_driver);
1039 #endif
1040 #if defined(CONFIG_FB_MB862XX_PCI_GDC)
1041 ret = pci_register_driver(&mb862xxfb_pci_driver);
1042 #endif
1043 return ret;
1044 }
1045
mb862xxfb_exit(void)1046 static void __exit mb862xxfb_exit(void)
1047 {
1048 #if defined(CONFIG_FB_MB862XX_LIME)
1049 of_unregister_platform_driver(&of_platform_mb862xxfb_driver);
1050 #endif
1051 #if defined(CONFIG_FB_MB862XX_PCI_GDC)
1052 pci_unregister_driver(&mb862xxfb_pci_driver);
1053 #endif
1054 }
1055
1056 module_init(mb862xxfb_init);
1057 module_exit(mb862xxfb_exit);
1058
1059 MODULE_DESCRIPTION("Fujitsu MB862xx Framebuffer driver");
1060 MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
1061 MODULE_LICENSE("GPL v2");
1062