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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* cg6.c: CGSIX (GX, GXplus, TGX) frame buffer driver
2 *
David S. Miller50312ce2006-06-29 14:35:52 -07003 * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
5 * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
6 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
7 *
8 * Driver layout based loosely on tgafb.c, see that file for credits.
9 */
10
11#include <linux/module.h>
12#include <linux/kernel.h>
13#include <linux/errno.h>
14#include <linux/string.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/delay.h>
16#include <linux/init.h>
17#include <linux/fb.h>
18#include <linux/mm.h>
Robert Reif6cd5a862008-05-08 21:37:30 -070019#include <linux/of_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020
21#include <asm/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <asm/fbio.h>
23
24#include "sbuslib.h"
25
26/*
27 * Local functions.
28 */
29
30static int cg6_setcolreg(unsigned, unsigned, unsigned, unsigned,
31 unsigned, struct fb_info *);
32static int cg6_blank(int, struct fb_info *);
33
34static void cg6_imageblit(struct fb_info *, const struct fb_image *);
35static void cg6_fillrect(struct fb_info *, const struct fb_fillrect *);
Robert Reif291d5f32008-10-10 12:12:41 -070036static void cg6_copyarea(struct fb_info *info, const struct fb_copyarea *area);
Linus Torvalds1da177e2005-04-16 15:20:36 -070037static int cg6_sync(struct fb_info *);
Christoph Hellwig216d5262006-01-14 13:21:25 -080038static int cg6_mmap(struct fb_info *, struct vm_area_struct *);
Christoph Hellwig67a66802006-01-14 13:21:25 -080039static int cg6_ioctl(struct fb_info *, unsigned int, unsigned long);
Robert Reif291d5f32008-10-10 12:12:41 -070040static int cg6_pan_display(struct fb_var_screeninfo *, struct fb_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
42/*
43 * Frame buffer operations
44 */
45
46static struct fb_ops cg6_ops = {
47 .owner = THIS_MODULE,
48 .fb_setcolreg = cg6_setcolreg,
49 .fb_blank = cg6_blank,
Robert Reif291d5f32008-10-10 12:12:41 -070050 .fb_pan_display = cg6_pan_display,
Linus Torvalds1da177e2005-04-16 15:20:36 -070051 .fb_fillrect = cg6_fillrect,
Krzysztof Helta140e942007-08-05 18:05:29 -070052 .fb_copyarea = cg6_copyarea,
Linus Torvalds1da177e2005-04-16 15:20:36 -070053 .fb_imageblit = cg6_imageblit,
54 .fb_sync = cg6_sync,
55 .fb_mmap = cg6_mmap,
56 .fb_ioctl = cg6_ioctl,
Christoph Hellwig9ffb83b2005-11-12 12:11:12 -080057#ifdef CONFIG_COMPAT
58 .fb_compat_ioctl = sbusfb_compat_ioctl,
59#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070060};
61
62/* Offset of interesting structures in the OBIO space */
63/*
64 * Brooktree is the video dac and is funny to program on the cg6.
65 * (it's even funnier on the cg3)
66 * The FBC could be the frame buffer control
67 * The FHC could is the frame buffer hardware control.
68 */
Krzysztof Helt6993bea2007-08-05 18:04:18 -070069#define CG6_ROM_OFFSET 0x0UL
70#define CG6_BROOKTREE_OFFSET 0x200000UL
71#define CG6_DHC_OFFSET 0x240000UL
72#define CG6_ALT_OFFSET 0x280000UL
73#define CG6_FHC_OFFSET 0x300000UL
74#define CG6_THC_OFFSET 0x301000UL
75#define CG6_FBC_OFFSET 0x700000UL
76#define CG6_TEC_OFFSET 0x701000UL
77#define CG6_RAM_OFFSET 0x800000UL
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
79/* FHC definitions */
Krzysztof Helt6993bea2007-08-05 18:04:18 -070080#define CG6_FHC_FBID_SHIFT 24
81#define CG6_FHC_FBID_MASK 255
82#define CG6_FHC_REV_SHIFT 20
83#define CG6_FHC_REV_MASK 15
84#define CG6_FHC_FROP_DISABLE (1 << 19)
85#define CG6_FHC_ROW_DISABLE (1 << 18)
86#define CG6_FHC_SRC_DISABLE (1 << 17)
87#define CG6_FHC_DST_DISABLE (1 << 16)
88#define CG6_FHC_RESET (1 << 15)
89#define CG6_FHC_LITTLE_ENDIAN (1 << 13)
90#define CG6_FHC_RES_MASK (3 << 11)
91#define CG6_FHC_1024 (0 << 11)
92#define CG6_FHC_1152 (1 << 11)
93#define CG6_FHC_1280 (2 << 11)
94#define CG6_FHC_1600 (3 << 11)
95#define CG6_FHC_CPU_MASK (3 << 9)
96#define CG6_FHC_CPU_SPARC (0 << 9)
97#define CG6_FHC_CPU_68020 (1 << 9)
98#define CG6_FHC_CPU_386 (2 << 9)
99#define CG6_FHC_TEST (1 << 8)
100#define CG6_FHC_TEST_X_SHIFT 4
101#define CG6_FHC_TEST_X_MASK 15
102#define CG6_FHC_TEST_Y_SHIFT 0
103#define CG6_FHC_TEST_Y_MASK 15
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104
105/* FBC mode definitions */
106#define CG6_FBC_BLIT_IGNORE 0x00000000
107#define CG6_FBC_BLIT_NOSRC 0x00100000
108#define CG6_FBC_BLIT_SRC 0x00200000
109#define CG6_FBC_BLIT_ILLEGAL 0x00300000
110#define CG6_FBC_BLIT_MASK 0x00300000
111
112#define CG6_FBC_VBLANK 0x00080000
113
114#define CG6_FBC_MODE_IGNORE 0x00000000
115#define CG6_FBC_MODE_COLOR8 0x00020000
116#define CG6_FBC_MODE_COLOR1 0x00040000
117#define CG6_FBC_MODE_HRMONO 0x00060000
118#define CG6_FBC_MODE_MASK 0x00060000
119
120#define CG6_FBC_DRAW_IGNORE 0x00000000
121#define CG6_FBC_DRAW_RENDER 0x00008000
122#define CG6_FBC_DRAW_PICK 0x00010000
123#define CG6_FBC_DRAW_ILLEGAL 0x00018000
124#define CG6_FBC_DRAW_MASK 0x00018000
125
126#define CG6_FBC_BWRITE0_IGNORE 0x00000000
127#define CG6_FBC_BWRITE0_ENABLE 0x00002000
128#define CG6_FBC_BWRITE0_DISABLE 0x00004000
129#define CG6_FBC_BWRITE0_ILLEGAL 0x00006000
130#define CG6_FBC_BWRITE0_MASK 0x00006000
131
132#define CG6_FBC_BWRITE1_IGNORE 0x00000000
133#define CG6_FBC_BWRITE1_ENABLE 0x00000800
134#define CG6_FBC_BWRITE1_DISABLE 0x00001000
135#define CG6_FBC_BWRITE1_ILLEGAL 0x00001800
136#define CG6_FBC_BWRITE1_MASK 0x00001800
137
138#define CG6_FBC_BREAD_IGNORE 0x00000000
139#define CG6_FBC_BREAD_0 0x00000200
140#define CG6_FBC_BREAD_1 0x00000400
141#define CG6_FBC_BREAD_ILLEGAL 0x00000600
142#define CG6_FBC_BREAD_MASK 0x00000600
143
144#define CG6_FBC_BDISP_IGNORE 0x00000000
145#define CG6_FBC_BDISP_0 0x00000080
146#define CG6_FBC_BDISP_1 0x00000100
147#define CG6_FBC_BDISP_ILLEGAL 0x00000180
148#define CG6_FBC_BDISP_MASK 0x00000180
149
150#define CG6_FBC_INDEX_MOD 0x00000040
151#define CG6_FBC_INDEX_MASK 0x00000030
152
153/* THC definitions */
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700154#define CG6_THC_MISC_REV_SHIFT 16
155#define CG6_THC_MISC_REV_MASK 15
156#define CG6_THC_MISC_RESET (1 << 12)
157#define CG6_THC_MISC_VIDEO (1 << 10)
158#define CG6_THC_MISC_SYNC (1 << 9)
159#define CG6_THC_MISC_VSYNC (1 << 8)
160#define CG6_THC_MISC_SYNC_ENAB (1 << 7)
161#define CG6_THC_MISC_CURS_RES (1 << 6)
162#define CG6_THC_MISC_INT_ENAB (1 << 5)
163#define CG6_THC_MISC_INT (1 << 4)
164#define CG6_THC_MISC_INIT 0x9f
Robert Reif291d5f32008-10-10 12:12:41 -0700165#define CG6_THC_CURSOFF ((65536-32) | ((65536-32) << 16))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
167/* The contents are unknown */
168struct cg6_tec {
David S. Miller50312ce2006-06-29 14:35:52 -0700169 int tec_matrix;
170 int tec_clip;
171 int tec_vdc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172};
173
174struct cg6_thc {
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700175 u32 thc_pad0[512];
176 u32 thc_hs; /* hsync timing */
177 u32 thc_hsdvs;
178 u32 thc_hd;
179 u32 thc_vs; /* vsync timing */
180 u32 thc_vd;
181 u32 thc_refresh;
182 u32 thc_misc;
183 u32 thc_pad1[56];
184 u32 thc_cursxy; /* cursor x,y position (16 bits each) */
185 u32 thc_cursmask[32]; /* cursor mask bits */
186 u32 thc_cursbits[32]; /* what to show where mask enabled */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187};
188
189struct cg6_fbc {
David S. Miller50312ce2006-06-29 14:35:52 -0700190 u32 xxx0[1];
191 u32 mode;
192 u32 clip;
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700193 u32 xxx1[1];
David S. Miller50312ce2006-06-29 14:35:52 -0700194 u32 s;
195 u32 draw;
196 u32 blit;
197 u32 font;
198 u32 xxx2[24];
199 u32 x0, y0, z0, color0;
200 u32 x1, y1, z1, color1;
201 u32 x2, y2, z2, color2;
202 u32 x3, y3, z3, color3;
203 u32 offx, offy;
204 u32 xxx3[2];
205 u32 incx, incy;
206 u32 xxx4[2];
207 u32 clipminx, clipminy;
208 u32 xxx5[2];
209 u32 clipmaxx, clipmaxy;
210 u32 xxx6[2];
211 u32 fg;
212 u32 bg;
213 u32 alu;
214 u32 pm;
215 u32 pixelm;
216 u32 xxx7[2];
217 u32 patalign;
218 u32 pattern[8];
219 u32 xxx8[432];
220 u32 apointx, apointy, apointz;
221 u32 xxx9[1];
222 u32 rpointx, rpointy, rpointz;
223 u32 xxx10[5];
224 u32 pointr, pointg, pointb, pointa;
225 u32 alinex, aliney, alinez;
226 u32 xxx11[1];
227 u32 rlinex, rliney, rlinez;
228 u32 xxx12[5];
229 u32 liner, lineg, lineb, linea;
230 u32 atrix, atriy, atriz;
231 u32 xxx13[1];
232 u32 rtrix, rtriy, rtriz;
233 u32 xxx14[5];
234 u32 trir, trig, trib, tria;
235 u32 aquadx, aquady, aquadz;
236 u32 xxx15[1];
237 u32 rquadx, rquady, rquadz;
238 u32 xxx16[5];
239 u32 quadr, quadg, quadb, quada;
240 u32 arectx, arecty, arectz;
241 u32 xxx17[1];
242 u32 rrectx, rrecty, rrectz;
243 u32 xxx18[5];
244 u32 rectr, rectg, rectb, recta;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245};
246
247struct bt_regs {
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700248 u32 addr;
249 u32 color_map;
250 u32 control;
251 u32 cursor;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252};
253
254struct cg6_par {
255 spinlock_t lock;
256 struct bt_regs __iomem *bt;
257 struct cg6_fbc __iomem *fbc;
258 struct cg6_thc __iomem *thc;
259 struct cg6_tec __iomem *tec;
David S. Miller50312ce2006-06-29 14:35:52 -0700260 u32 __iomem *fhc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261
262 u32 flags;
263#define CG6_FLAG_BLANKED 0x00000001
264
David S. Miller50312ce2006-06-29 14:35:52 -0700265 unsigned long which_io;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266};
267
268static int cg6_sync(struct fb_info *info)
269{
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700270 struct cg6_par *par = (struct cg6_par *)info->par;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 struct cg6_fbc __iomem *fbc = par->fbc;
272 int limit = 10000;
273
274 do {
275 if (!(sbus_readl(&fbc->s) & 0x10000000))
276 break;
277 udelay(10);
278 } while (--limit > 0);
279
280 return 0;
281}
282
Robert Reif291d5f32008-10-10 12:12:41 -0700283static void cg6_switch_from_graph(struct cg6_par *par)
284{
285 struct cg6_thc __iomem *thc = par->thc;
286 unsigned long flags;
287
288 spin_lock_irqsave(&par->lock, flags);
289
290 /* Hide the cursor. */
291 sbus_writel(CG6_THC_CURSOFF, &thc->thc_cursxy);
292
293 spin_unlock_irqrestore(&par->lock, flags);
294}
295
296static int cg6_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
297{
298 struct cg6_par *par = (struct cg6_par *)info->par;
299
300 /* We just use this to catch switches out of
301 * graphics mode.
302 */
303 cg6_switch_from_graph(par);
304
305 if (var->xoffset || var->yoffset || var->vmode)
306 return -EINVAL;
307 return 0;
308}
309
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310/**
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700311 * cg6_fillrect - Draws a rectangle on the screen.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 *
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700313 * @info: frame buffer structure that represents a single frame buffer
314 * @rect: structure defining the rectagle and operation.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 */
316static void cg6_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
317{
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700318 struct cg6_par *par = (struct cg6_par *)info->par;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 struct cg6_fbc __iomem *fbc = par->fbc;
320 unsigned long flags;
321 s32 val;
322
Krzysztof Helta140e942007-08-05 18:05:29 -0700323 /* CG6 doesn't handle ROP_XOR */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324
325 spin_lock_irqsave(&par->lock, flags);
Krzysztof Helta140e942007-08-05 18:05:29 -0700326
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 cg6_sync(info);
Krzysztof Helta140e942007-08-05 18:05:29 -0700328
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 sbus_writel(rect->color, &fbc->fg);
330 sbus_writel(~(u32)0, &fbc->pixelm);
331 sbus_writel(0xea80ff00, &fbc->alu);
332 sbus_writel(0, &fbc->s);
333 sbus_writel(0, &fbc->clip);
334 sbus_writel(~(u32)0, &fbc->pm);
335 sbus_writel(rect->dy, &fbc->arecty);
336 sbus_writel(rect->dx, &fbc->arectx);
337 sbus_writel(rect->dy + rect->height, &fbc->arecty);
338 sbus_writel(rect->dx + rect->width, &fbc->arectx);
339 do {
340 val = sbus_readl(&fbc->draw);
341 } while (val < 0 && (val & 0x20000000));
342 spin_unlock_irqrestore(&par->lock, flags);
343}
344
345/**
Krzysztof Helta140e942007-08-05 18:05:29 -0700346 * cg6_copyarea - Copies one area of the screen to another area.
347 *
348 * @info: frame buffer structure that represents a single frame buffer
349 * @area: Structure providing the data to copy the framebuffer contents
350 * from one region to another.
351 *
352 * This drawing operation copies a rectangular area from one area of the
353 * screen to another area.
354 */
355static void cg6_copyarea(struct fb_info *info, const struct fb_copyarea *area)
356{
357 struct cg6_par *par = (struct cg6_par *)info->par;
358 struct cg6_fbc __iomem *fbc = par->fbc;
359 unsigned long flags;
360 int i;
361
362 spin_lock_irqsave(&par->lock, flags);
363
364 cg6_sync(info);
365
366 sbus_writel(0xff, &fbc->fg);
367 sbus_writel(0x00, &fbc->bg);
368 sbus_writel(~0, &fbc->pixelm);
369 sbus_writel(0xe880cccc, &fbc->alu);
370 sbus_writel(0, &fbc->s);
371 sbus_writel(0, &fbc->clip);
372
373 sbus_writel(area->sy, &fbc->y0);
374 sbus_writel(area->sx, &fbc->x0);
375 sbus_writel(area->sy + area->height - 1, &fbc->y1);
376 sbus_writel(area->sx + area->width - 1, &fbc->x1);
377 sbus_writel(area->dy, &fbc->y2);
378 sbus_writel(area->dx, &fbc->x2);
379 sbus_writel(area->dy + area->height - 1, &fbc->y3);
380 sbus_writel(area->dx + area->width - 1, &fbc->x3);
381 do {
382 i = sbus_readl(&fbc->blit);
383 } while (i < 0 && (i & 0x20000000));
384 spin_unlock_irqrestore(&par->lock, flags);
385}
386
387/**
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700388 * cg6_imageblit - Copies a image from system memory to the screen.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 *
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700390 * @info: frame buffer structure that represents a single frame buffer
391 * @image: structure defining the image.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 */
393static void cg6_imageblit(struct fb_info *info, const struct fb_image *image)
394{
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700395 struct cg6_par *par = (struct cg6_par *)info->par;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 struct cg6_fbc __iomem *fbc = par->fbc;
397 const u8 *data = image->data;
398 unsigned long flags;
399 u32 x, y;
400 int i, width;
401
402 if (image->depth > 1) {
403 cfb_imageblit(info, image);
404 return;
405 }
406
407 spin_lock_irqsave(&par->lock, flags);
408
409 cg6_sync(info);
410
411 sbus_writel(image->fg_color, &fbc->fg);
412 sbus_writel(image->bg_color, &fbc->bg);
413 sbus_writel(0x140000, &fbc->mode);
414 sbus_writel(0xe880fc30, &fbc->alu);
415 sbus_writel(~(u32)0, &fbc->pixelm);
416 sbus_writel(0, &fbc->s);
417 sbus_writel(0, &fbc->clip);
418 sbus_writel(0xff, &fbc->pm);
419 sbus_writel(32, &fbc->incx);
420 sbus_writel(0, &fbc->incy);
421
422 x = image->dx;
423 y = image->dy;
424 for (i = 0; i < image->height; i++) {
425 width = image->width;
426
427 while (width >= 32) {
428 u32 val;
429
430 sbus_writel(y, &fbc->y0);
431 sbus_writel(x, &fbc->x0);
432 sbus_writel(x + 32 - 1, &fbc->x1);
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700433
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 val = ((u32)data[0] << 24) |
435 ((u32)data[1] << 16) |
436 ((u32)data[2] << 8) |
437 ((u32)data[3] << 0);
438 sbus_writel(val, &fbc->font);
439
440 data += 4;
441 x += 32;
442 width -= 32;
443 }
444 if (width) {
445 u32 val;
446
447 sbus_writel(y, &fbc->y0);
448 sbus_writel(x, &fbc->x0);
449 sbus_writel(x + width - 1, &fbc->x1);
450 if (width <= 8) {
451 val = (u32) data[0] << 24;
452 data += 1;
453 } else if (width <= 16) {
454 val = ((u32) data[0] << 24) |
455 ((u32) data[1] << 16);
456 data += 2;
457 } else {
458 val = ((u32) data[0] << 24) |
459 ((u32) data[1] << 16) |
460 ((u32) data[2] << 8);
461 data += 3;
462 }
463 sbus_writel(val, &fbc->font);
464 }
465
466 y += 1;
467 x = image->dx;
468 }
469
470 spin_unlock_irqrestore(&par->lock, flags);
471}
472
473/**
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700474 * cg6_setcolreg - Sets a color register.
475 *
476 * @regno: boolean, 0 copy local, 1 get_user() function
477 * @red: frame buffer colormap structure
478 * @green: The green value which can be up to 16 bits wide
479 * @blue: The blue value which can be up to 16 bits wide.
480 * @transp: If supported the alpha value which can be up to 16 bits wide.
481 * @info: frame buffer info structure
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 */
483static int cg6_setcolreg(unsigned regno,
484 unsigned red, unsigned green, unsigned blue,
485 unsigned transp, struct fb_info *info)
486{
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700487 struct cg6_par *par = (struct cg6_par *)info->par;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 struct bt_regs __iomem *bt = par->bt;
489 unsigned long flags;
490
491 if (regno >= 256)
492 return 1;
493
494 red >>= 8;
495 green >>= 8;
496 blue >>= 8;
497
498 spin_lock_irqsave(&par->lock, flags);
499
500 sbus_writel((u32)regno << 24, &bt->addr);
501 sbus_writel((u32)red << 24, &bt->color_map);
502 sbus_writel((u32)green << 24, &bt->color_map);
503 sbus_writel((u32)blue << 24, &bt->color_map);
504
505 spin_unlock_irqrestore(&par->lock, flags);
506
507 return 0;
508}
509
510/**
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700511 * cg6_blank - Blanks the display.
512 *
513 * @blank_mode: the blank mode we want.
514 * @info: frame buffer structure that represents a single frame buffer
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 */
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700516static int cg6_blank(int blank, struct fb_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517{
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700518 struct cg6_par *par = (struct cg6_par *)info->par;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 struct cg6_thc __iomem *thc = par->thc;
520 unsigned long flags;
521 u32 val;
522
523 spin_lock_irqsave(&par->lock, flags);
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700524 val = sbus_readl(&thc->thc_misc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525
526 switch (blank) {
527 case FB_BLANK_UNBLANK: /* Unblanking */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 val |= CG6_THC_MISC_VIDEO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 par->flags &= ~CG6_FLAG_BLANKED;
530 break;
531
532 case FB_BLANK_NORMAL: /* Normal blanking */
533 case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
534 case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
535 case FB_BLANK_POWERDOWN: /* Poweroff */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 val &= ~CG6_THC_MISC_VIDEO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 par->flags |= CG6_FLAG_BLANKED;
538 break;
539 }
540
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700541 sbus_writel(val, &thc->thc_misc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 spin_unlock_irqrestore(&par->lock, flags);
543
544 return 0;
545}
546
547static struct sbus_mmap_map cg6_mmap_map[] = {
548 {
549 .voff = CG6_FBC,
550 .poff = CG6_FBC_OFFSET,
551 .size = PAGE_SIZE
552 },
553 {
554 .voff = CG6_TEC,
555 .poff = CG6_TEC_OFFSET,
556 .size = PAGE_SIZE
557 },
558 {
559 .voff = CG6_BTREGS,
560 .poff = CG6_BROOKTREE_OFFSET,
561 .size = PAGE_SIZE
562 },
563 {
564 .voff = CG6_FHC,
565 .poff = CG6_FHC_OFFSET,
566 .size = PAGE_SIZE
567 },
568 {
569 .voff = CG6_THC,
570 .poff = CG6_THC_OFFSET,
571 .size = PAGE_SIZE
572 },
573 {
574 .voff = CG6_ROM,
575 .poff = CG6_ROM_OFFSET,
576 .size = 0x10000
577 },
578 {
579 .voff = CG6_RAM,
580 .poff = CG6_RAM_OFFSET,
581 .size = SBUS_MMAP_FBSIZE(1)
582 },
583 {
584 .voff = CG6_DHC,
585 .poff = CG6_DHC_OFFSET,
586 .size = 0x40000
587 },
588 { .size = 0 }
589};
590
Christoph Hellwig216d5262006-01-14 13:21:25 -0800591static int cg6_mmap(struct fb_info *info, struct vm_area_struct *vma)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592{
593 struct cg6_par *par = (struct cg6_par *)info->par;
594
595 return sbusfb_mmap_helper(cg6_mmap_map,
Krzysztof Helt963b9162009-05-04 10:39:45 +0000596 info->fix.smem_start, info->fix.smem_len,
David S. Miller50312ce2006-06-29 14:35:52 -0700597 par->which_io, vma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598}
599
Christoph Hellwig67a66802006-01-14 13:21:25 -0800600static int cg6_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 return sbusfb_ioctl_helper(cmd, arg, info,
Krzysztof Helt963b9162009-05-04 10:39:45 +0000603 FBTYPE_SUNFAST_COLOR, 8, info->fix.smem_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604}
605
606/*
607 * Initialisation
608 */
609
Greg Kroah-Hartman48c68c42012-12-21 13:07:39 -0800610static void cg6_init_fix(struct fb_info *info, int linebytes)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611{
612 struct cg6_par *par = (struct cg6_par *)info->par;
613 const char *cg6_cpu_name, *cg6_card_name;
614 u32 conf;
615
616 conf = sbus_readl(par->fhc);
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700617 switch (conf & CG6_FHC_CPU_MASK) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 case CG6_FHC_CPU_SPARC:
619 cg6_cpu_name = "sparc";
620 break;
621 case CG6_FHC_CPU_68020:
622 cg6_cpu_name = "68020";
623 break;
624 default:
625 cg6_cpu_name = "i386";
626 break;
Joe Perchescf6ac4ce2013-10-08 16:23:24 -0700627 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628 if (((conf >> CG6_FHC_REV_SHIFT) & CG6_FHC_REV_MASK) >= 11) {
Krzysztof Helt963b9162009-05-04 10:39:45 +0000629 if (info->fix.smem_len <= 0x100000)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 cg6_card_name = "TGX";
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700631 else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 cg6_card_name = "TGX+";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633 } else {
Krzysztof Helt963b9162009-05-04 10:39:45 +0000634 if (info->fix.smem_len <= 0x100000)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 cg6_card_name = "GX";
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700636 else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637 cg6_card_name = "GX+";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 }
639
640 sprintf(info->fix.id, "%s %s", cg6_card_name, cg6_cpu_name);
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700641 info->fix.id[sizeof(info->fix.id) - 1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642
643 info->fix.type = FB_TYPE_PACKED_PIXELS;
644 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
645
646 info->fix.line_length = linebytes;
647
648 info->fix.accel = FB_ACCEL_SUN_CGSIX;
649}
650
651/* Initialize Brooktree DAC */
Greg Kroah-Hartman48c68c42012-12-21 13:07:39 -0800652static void cg6_bt_init(struct cg6_par *par)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653{
654 struct bt_regs __iomem *bt = par->bt;
655
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700656 sbus_writel(0x04 << 24, &bt->addr); /* color planes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 sbus_writel(0xff << 24, &bt->control);
658 sbus_writel(0x05 << 24, &bt->addr);
659 sbus_writel(0x00 << 24, &bt->control);
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700660 sbus_writel(0x06 << 24, &bt->addr); /* overlay plane */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 sbus_writel(0x73 << 24, &bt->control);
662 sbus_writel(0x07 << 24, &bt->addr);
663 sbus_writel(0x00 << 24, &bt->control);
664}
665
Greg Kroah-Hartman48c68c42012-12-21 13:07:39 -0800666static void cg6_chip_init(struct fb_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667{
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700668 struct cg6_par *par = (struct cg6_par *)info->par;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 struct cg6_tec __iomem *tec = par->tec;
670 struct cg6_fbc __iomem *fbc = par->fbc;
Robert Reif291d5f32008-10-10 12:12:41 -0700671 struct cg6_thc __iomem *thc = par->thc;
David S. Miller806f7bf2005-12-12 14:41:20 -0800672 u32 rev, conf, mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 int i;
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700674
Robert Reif291d5f32008-10-10 12:12:41 -0700675 /* Hide the cursor. */
676 sbus_writel(CG6_THC_CURSOFF, &thc->thc_cursxy);
677
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 /* Turn off stuff in the Transform Engine. */
679 sbus_writel(0, &tec->tec_matrix);
680 sbus_writel(0, &tec->tec_clip);
681 sbus_writel(0, &tec->tec_vdc);
682
683 /* Take care of bugs in old revisions. */
684 rev = (sbus_readl(par->fhc) >> CG6_FHC_REV_SHIFT) & CG6_FHC_REV_MASK;
685 if (rev < 5) {
686 conf = (sbus_readl(par->fhc) & CG6_FHC_RES_MASK) |
687 CG6_FHC_CPU_68020 | CG6_FHC_TEST |
688 (11 << CG6_FHC_TEST_X_SHIFT) |
689 (11 << CG6_FHC_TEST_Y_SHIFT);
690 if (rev < 2)
691 conf |= CG6_FHC_DST_DISABLE;
692 sbus_writel(conf, par->fhc);
693 }
694
695 /* Set things in the FBC. Bad things appear to happen if we do
696 * back to back store/loads on the mode register, so copy it
697 * out instead. */
698 mode = sbus_readl(&fbc->mode);
699 do {
700 i = sbus_readl(&fbc->s);
701 } while (i & 0x10000000);
702 mode &= ~(CG6_FBC_BLIT_MASK | CG6_FBC_MODE_MASK |
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700703 CG6_FBC_DRAW_MASK | CG6_FBC_BWRITE0_MASK |
704 CG6_FBC_BWRITE1_MASK | CG6_FBC_BREAD_MASK |
705 CG6_FBC_BDISP_MASK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706 mode |= (CG6_FBC_BLIT_SRC | CG6_FBC_MODE_COLOR8 |
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700707 CG6_FBC_DRAW_RENDER | CG6_FBC_BWRITE0_ENABLE |
708 CG6_FBC_BWRITE1_DISABLE | CG6_FBC_BREAD_0 |
709 CG6_FBC_BDISP_0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 sbus_writel(mode, &fbc->mode);
711
712 sbus_writel(0, &fbc->clip);
713 sbus_writel(0, &fbc->offx);
714 sbus_writel(0, &fbc->offy);
715 sbus_writel(0, &fbc->clipminx);
716 sbus_writel(0, &fbc->clipminy);
717 sbus_writel(info->var.xres - 1, &fbc->clipmaxx);
718 sbus_writel(info->var.yres - 1, &fbc->clipmaxy);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719}
720
Grant Likely2dc11582010-08-06 09:25:50 -0600721static void cg6_unmap_regs(struct platform_device *op, struct fb_info *info,
David S. Millerc7f439b2007-07-27 22:31:46 -0700722 struct cg6_par *par)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723{
David S. Millerc7f439b2007-07-27 22:31:46 -0700724 if (par->fbc)
725 of_iounmap(&op->resource[0], par->fbc, 4096);
726 if (par->tec)
727 of_iounmap(&op->resource[0], par->tec, sizeof(struct cg6_tec));
728 if (par->thc)
729 of_iounmap(&op->resource[0], par->thc, sizeof(struct cg6_thc));
730 if (par->bt)
731 of_iounmap(&op->resource[0], par->bt, sizeof(struct bt_regs));
732 if (par->fhc)
733 of_iounmap(&op->resource[0], par->fhc, sizeof(u32));
David S. Miller50312ce2006-06-29 14:35:52 -0700734
David S. Millerc7f439b2007-07-27 22:31:46 -0700735 if (info->screen_base)
Krzysztof Helt963b9162009-05-04 10:39:45 +0000736 of_iounmap(&op->resource[0], info->screen_base,
737 info->fix.smem_len);
David S. Miller50312ce2006-06-29 14:35:52 -0700738}
739
Greg Kroah-Hartman48c68c42012-12-21 13:07:39 -0800740static int cg6_probe(struct platform_device *op)
David S. Miller50312ce2006-06-29 14:35:52 -0700741{
Grant Likely61c7a082010-04-13 16:12:29 -0700742 struct device_node *dp = op->dev.of_node;
David S. Millerc7f439b2007-07-27 22:31:46 -0700743 struct fb_info *info;
744 struct cg6_par *par;
David S. Miller50312ce2006-06-29 14:35:52 -0700745 int linebytes, err;
Krzysztof Helt3fc701d2007-08-01 21:39:32 -0700746 int dblbuf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747
David S. Millerc7f439b2007-07-27 22:31:46 -0700748 info = framebuffer_alloc(sizeof(struct cg6_par), &op->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749
David S. Millerc7f439b2007-07-27 22:31:46 -0700750 err = -ENOMEM;
751 if (!info)
752 goto out_err;
753 par = info->par;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754
David S. Millerc7f439b2007-07-27 22:31:46 -0700755 spin_lock_init(&par->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756
Krzysztof Helt963b9162009-05-04 10:39:45 +0000757 info->fix.smem_start = op->resource[0].start;
David S. Millerc7f439b2007-07-27 22:31:46 -0700758 par->which_io = op->resource[0].flags & IORESOURCE_BITS;
759
Robert Reif6cd5a862008-05-08 21:37:30 -0700760 sbusfb_fill_var(&info->var, dp, 8);
David S. Millerc7f439b2007-07-27 22:31:46 -0700761 info->var.red.length = 8;
762 info->var.green.length = 8;
763 info->var.blue.length = 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764
David S. Miller50312ce2006-06-29 14:35:52 -0700765 linebytes = of_getintprop_default(dp, "linebytes",
David S. Millerc7f439b2007-07-27 22:31:46 -0700766 info->var.xres);
Krzysztof Helt963b9162009-05-04 10:39:45 +0000767 info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
Krzysztof Helt3fc701d2007-08-01 21:39:32 -0700768
769 dblbuf = of_getintprop_default(dp, "dblbuf", 0);
770 if (dblbuf)
Krzysztof Helt963b9162009-05-04 10:39:45 +0000771 info->fix.smem_len *= 4;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772
David S. Millerc7f439b2007-07-27 22:31:46 -0700773 par->fbc = of_ioremap(&op->resource[0], CG6_FBC_OFFSET,
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700774 4096, "cgsix fbc");
David S. Millerc7f439b2007-07-27 22:31:46 -0700775 par->tec = of_ioremap(&op->resource[0], CG6_TEC_OFFSET,
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700776 sizeof(struct cg6_tec), "cgsix tec");
David S. Millerc7f439b2007-07-27 22:31:46 -0700777 par->thc = of_ioremap(&op->resource[0], CG6_THC_OFFSET,
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700778 sizeof(struct cg6_thc), "cgsix thc");
David S. Millerc7f439b2007-07-27 22:31:46 -0700779 par->bt = of_ioremap(&op->resource[0], CG6_BROOKTREE_OFFSET,
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700780 sizeof(struct bt_regs), "cgsix dac");
David S. Millerc7f439b2007-07-27 22:31:46 -0700781 par->fhc = of_ioremap(&op->resource[0], CG6_FHC_OFFSET,
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700782 sizeof(u32), "cgsix fhc");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783
David S. Millerc7f439b2007-07-27 22:31:46 -0700784 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_IMAGEBLIT |
Krzysztof Helta140e942007-08-05 18:05:29 -0700785 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
786 FBINFO_READS_FAST;
David S. Millerc7f439b2007-07-27 22:31:46 -0700787 info->fbops = &cg6_ops;
David S. Miller50312ce2006-06-29 14:35:52 -0700788
Krzysztof Helt6993bea2007-08-05 18:04:18 -0700789 info->screen_base = of_ioremap(&op->resource[0], CG6_RAM_OFFSET,
Krzysztof Helt963b9162009-05-04 10:39:45 +0000790 info->fix.smem_len, "cgsix ram");
David S. Millerc7f439b2007-07-27 22:31:46 -0700791 if (!par->fbc || !par->tec || !par->thc ||
792 !par->bt || !par->fhc || !info->screen_base)
793 goto out_unmap_regs;
David S. Miller50312ce2006-06-29 14:35:52 -0700794
David S. Millerc7f439b2007-07-27 22:31:46 -0700795 info->var.accel_flags = FB_ACCELF_TEXT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796
David S. Millerc7f439b2007-07-27 22:31:46 -0700797 cg6_bt_init(par);
798 cg6_chip_init(info);
Robert Reif59f71372008-05-03 21:12:00 -0700799 cg6_blank(FB_BLANK_UNBLANK, info);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800
David S. Millerc7f439b2007-07-27 22:31:46 -0700801 if (fb_alloc_cmap(&info->cmap, 256, 0))
802 goto out_unmap_regs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803
David S. Millerc7f439b2007-07-27 22:31:46 -0700804 fb_set_cmap(&info->cmap, info);
805 cg6_init_fix(info, linebytes);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806
David S. Millerc7f439b2007-07-27 22:31:46 -0700807 err = register_framebuffer(info);
808 if (err < 0)
809 goto out_dealloc_cmap;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810
David S. Millerc7f439b2007-07-27 22:31:46 -0700811 dev_set_drvdata(&op->dev, info);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812
Robert Reif194f1a682008-04-27 15:18:57 -0700813 printk(KERN_INFO "%s: CGsix [%s] at %lx:%lx\n",
David S. Millerc7f439b2007-07-27 22:31:46 -0700814 dp->full_name, info->fix.id,
Krzysztof Helt963b9162009-05-04 10:39:45 +0000815 par->which_io, info->fix.smem_start);
David S. Miller50312ce2006-06-29 14:35:52 -0700816
817 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818
David S. Millerc7f439b2007-07-27 22:31:46 -0700819out_dealloc_cmap:
820 fb_dealloc_cmap(&info->cmap);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821
David S. Millerc7f439b2007-07-27 22:31:46 -0700822out_unmap_regs:
823 cg6_unmap_regs(op, info, par);
axel lin63596912011-02-15 09:35:02 +0000824 framebuffer_release(info);
David S. Millerc7f439b2007-07-27 22:31:46 -0700825
826out_err:
827 return err;
David S. Miller50312ce2006-06-29 14:35:52 -0700828}
829
Greg Kroah-Hartman48c68c42012-12-21 13:07:39 -0800830static int cg6_remove(struct platform_device *op)
David S. Miller50312ce2006-06-29 14:35:52 -0700831{
David S. Millerc7f439b2007-07-27 22:31:46 -0700832 struct fb_info *info = dev_get_drvdata(&op->dev);
833 struct cg6_par *par = info->par;
David S. Miller50312ce2006-06-29 14:35:52 -0700834
David S. Millerc7f439b2007-07-27 22:31:46 -0700835 unregister_framebuffer(info);
836 fb_dealloc_cmap(&info->cmap);
David S. Miller50312ce2006-06-29 14:35:52 -0700837
David S. Millerc7f439b2007-07-27 22:31:46 -0700838 cg6_unmap_regs(op, info, par);
David S. Miller50312ce2006-06-29 14:35:52 -0700839
David S. Millerc7f439b2007-07-27 22:31:46 -0700840 framebuffer_release(info);
David S. Miller50312ce2006-06-29 14:35:52 -0700841
David S. Miller50312ce2006-06-29 14:35:52 -0700842 return 0;
843}
844
David S. Millerfd098312008-08-31 01:23:17 -0700845static const struct of_device_id cg6_match[] = {
David S. Miller50312ce2006-06-29 14:35:52 -0700846 {
847 .name = "cgsix",
848 },
849 {
850 .name = "cgthree+",
851 },
852 {},
853};
854MODULE_DEVICE_TABLE(of, cg6_match);
855
Grant Likely28541d02011-02-22 21:07:43 -0700856static struct platform_driver cg6_driver = {
Grant Likely40182942010-04-13 16:13:02 -0700857 .driver = {
858 .name = "cg6",
859 .owner = THIS_MODULE,
860 .of_match_table = cg6_match,
861 },
David S. Miller50312ce2006-06-29 14:35:52 -0700862 .probe = cg6_probe,
Greg Kroah-Hartman48c68c42012-12-21 13:07:39 -0800863 .remove = cg6_remove,
David S. Miller50312ce2006-06-29 14:35:52 -0700864};
865
866static int __init cg6_init(void)
867{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868 if (fb_get_options("cg6fb", NULL))
869 return -ENODEV;
870
Grant Likely28541d02011-02-22 21:07:43 -0700871 return platform_driver_register(&cg6_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872}
873
David S. Miller50312ce2006-06-29 14:35:52 -0700874static void __exit cg6_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875{
Grant Likely28541d02011-02-22 21:07:43 -0700876 platform_driver_unregister(&cg6_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877}
878
879module_init(cg6_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880module_exit(cg6_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881
882MODULE_DESCRIPTION("framebuffer driver for CGsix chipsets");
David S. Miller50312ce2006-06-29 14:35:52 -0700883MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
884MODULE_VERSION("2.0");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885MODULE_LICENSE("GPL");