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Linux/drivers/video/ps3fb.c

  1 /*
  2  *  linux/drivers/video/ps3fb.c -- PS3 GPU frame buffer device
  3  *
  4  *      Copyright (C) 2006 Sony Computer Entertainment Inc.
  5  *      Copyright 2006, 2007 Sony Corporation
  6  *
  7  *  This file is based on :
  8  *
  9  *  linux/drivers/video/vfb.c -- Virtual frame buffer device
 10  *
 11  *      Copyright (C) 2002 James Simmons
 12  *
 13  *      Copyright (C) 1997 Geert Uytterhoeven
 14  *
 15  *  This file is subject to the terms and conditions of the GNU General Public
 16  *  License. See the file COPYING in the main directory of this archive for
 17  *  more details.
 18  */
 19 
 20 #include <linux/module.h>
 21 #include <linux/kernel.h>
 22 #include <linux/errno.h>
 23 #include <linux/string.h>
 24 #include <linux/mm.h>
 25 #include <linux/interrupt.h>
 26 #include <linux/console.h>
 27 #include <linux/ioctl.h>
 28 #include <linux/kthread.h>
 29 #include <linux/freezer.h>
 30 #include <linux/uaccess.h>
 31 #include <linux/fb.h>
 32 #include <linux/init.h>
 33 
 34 #include <asm/cell-regs.h>
 35 #include <asm/lv1call.h>
 36 #include <asm/ps3av.h>
 37 #include <asm/ps3fb.h>
 38 #include <asm/ps3.h>
 39 #include <asm/ps3gpu.h>
 40 
 41 
 42 #define DEVICE_NAME             "ps3fb"
 43 
 44 #define GPU_CMD_BUF_SIZE                        (2 * 1024 * 1024)
 45 #define GPU_FB_START                            (64 * 1024)
 46 #define GPU_IOIF                                (0x0d000000UL)
 47 #define GPU_ALIGN_UP(x)                         _ALIGN_UP((x), 64)
 48 #define GPU_MAX_LINE_LENGTH                     (65536 - 64)
 49 
 50 #define GPU_INTR_STATUS_VSYNC_0                 0       /* vsync on head A */
 51 #define GPU_INTR_STATUS_VSYNC_1                 1       /* vsync on head B */
 52 #define GPU_INTR_STATUS_FLIP_0                  3       /* flip head A */
 53 #define GPU_INTR_STATUS_FLIP_1                  4       /* flip head B */
 54 #define GPU_INTR_STATUS_QUEUE_0                 5       /* queue head A */
 55 #define GPU_INTR_STATUS_QUEUE_1                 6       /* queue head B */
 56 
 57 #define GPU_DRIVER_INFO_VERSION                 0x211
 58 
 59 /* gpu internals */
 60 struct display_head {
 61         u64 be_time_stamp;
 62         u32 status;
 63         u32 offset;
 64         u32 res1;
 65         u32 res2;
 66         u32 field;
 67         u32 reserved1;
 68 
 69         u64 res3;
 70         u32 raster;
 71 
 72         u64 vblank_count;
 73         u32 field_vsync;
 74         u32 reserved2;
 75 };
 76 
 77 struct gpu_irq {
 78         u32 irq_outlet;
 79         u32 status;
 80         u32 mask;
 81         u32 video_cause;
 82         u32 graph_cause;
 83         u32 user_cause;
 84 
 85         u32 res1;
 86         u64 res2;
 87 
 88         u32 reserved[4];
 89 };
 90 
 91 struct gpu_driver_info {
 92         u32 version_driver;
 93         u32 version_gpu;
 94         u32 memory_size;
 95         u32 hardware_channel;
 96 
 97         u32 nvcore_frequency;
 98         u32 memory_frequency;
 99 
100         u32 reserved[1063];
101         struct display_head display_head[8];
102         struct gpu_irq irq;
103 };
104 
105 struct ps3fb_priv {
106         unsigned int irq_no;
107 
108         u64 context_handle, memory_handle;
109         struct gpu_driver_info *dinfo;
110 
111         u64 vblank_count;       /* frame count */
112         wait_queue_head_t wait_vsync;
113 
114         atomic_t ext_flip;      /* on/off flip with vsync */
115         atomic_t f_count;       /* fb_open count */
116         int is_blanked;
117         int is_kicked;
118         struct task_struct *task;
119 };
120 static struct ps3fb_priv ps3fb;
121 
122 struct ps3fb_par {
123         u32 pseudo_palette[16];
124         int mode_id, new_mode_id;
125         unsigned int num_frames;        /* num of frame buffers */
126         unsigned int width;
127         unsigned int height;
128         unsigned int ddr_line_length;
129         unsigned int ddr_frame_size;
130         unsigned int xdr_frame_size;
131         unsigned int full_offset;       /* start of fullscreen DDR fb */
132         unsigned int fb_offset;         /* start of actual DDR fb */
133         unsigned int pan_offset;
134 };
135 
136 
137 #define FIRST_NATIVE_MODE_INDEX 10
138 
139 static const struct fb_videomode ps3fb_modedb[] = {
140     /* 60 Hz broadcast modes (modes "1" to "5") */
141     {
142         /* 480i */
143         "480i", 60, 576, 384, 74074, 130, 89, 78, 57, 63, 6,
144         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
145     },    {
146         /* 480p */
147         "480p", 60, 576, 384, 37037, 130, 89, 78, 57, 63, 6,
148         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
149     },    {
150         /* 720p */
151         "720p", 60, 1124, 644, 13481, 298, 148, 57, 44, 80, 5,
152         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
153     },    {
154         /* 1080i */
155         "1080i", 60, 1688, 964, 13481, 264, 160, 94, 62, 88, 5,
156         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
157     },    {
158         /* 1080p */
159         "1080p", 60, 1688, 964, 6741, 264, 160, 94, 62, 88, 5,
160         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
161     },
162 
163     /* 50 Hz broadcast modes (modes "6" to "10") */
164     {
165         /* 576i */
166         "576i", 50, 576, 460, 74074, 142, 83, 97, 63, 63, 5,
167         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
168     },    {
169         /* 576p */
170         "576p", 50, 576, 460, 37037, 142, 83, 97, 63, 63, 5,
171         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
172     },    {
173         /* 720p */
174         "720p", 50, 1124, 644, 13468, 298, 478, 57, 44, 80, 5,
175         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
176     },    {
177         /* 1080i */
178         "1080i", 50, 1688, 964, 13468, 264, 600, 94, 62, 88, 5,
179         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
180     },    {
181         /* 1080p */
182         "1080p", 50, 1688, 964, 6734, 264, 600, 94, 62, 88, 5,
183         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
184     },
185 
186     [FIRST_NATIVE_MODE_INDEX] =
187     /* 60 Hz broadcast modes (full resolution versions of modes "1" to "5") */
188     {
189         /* 480if */
190         "480if", 60, 720, 480, 74074, 58, 17, 30, 9, 63, 6,
191         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
192     }, {
193         /* 480pf */
194         "480pf", 60, 720, 480, 37037, 58, 17, 30, 9, 63, 6,
195         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
196     }, {
197         /* 720pf */
198         "720pf", 60, 1280, 720, 13481, 220, 70, 19, 6, 80, 5,
199         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
200     }, {
201         /* 1080if */
202         "1080if", 60, 1920, 1080, 13481, 148, 44, 36, 4, 88, 5,
203         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
204     }, {
205         /* 1080pf */
206         "1080pf", 60, 1920, 1080, 6741, 148, 44, 36, 4, 88, 5,
207         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
208     },
209 
210     /* 50 Hz broadcast modes (full resolution versions of modes "6" to "10") */
211     {
212         /* 576if */
213         "576if", 50, 720, 576, 74074, 70, 11, 39, 5, 63, 5,
214         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
215     }, {
216         /* 576pf */
217         "576pf", 50, 720, 576, 37037, 70, 11, 39, 5, 63, 5,
218         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
219     }, {
220         /* 720pf */
221         "720pf", 50, 1280, 720, 13468, 220, 400, 19, 6, 80, 5,
222         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
223     }, {
224         /* 1080if */
225         "1080if", 50, 1920, 1080, 13468, 148, 484, 36, 4, 88, 5,
226         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
227     }, {
228         /* 1080pf */
229         "1080pf", 50, 1920, 1080, 6734, 148, 484, 36, 4, 88, 5,
230         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
231     },
232 
233     /* VESA modes (modes "11" to "13") */
234     {
235         /* WXGA */
236         "wxga", 60, 1280, 768, 12924, 160, 24, 29, 3, 136, 6,
237         0, FB_VMODE_NONINTERLACED,
238         FB_MODE_IS_VESA
239     }, {
240         /* SXGA */
241         "sxga", 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
242         FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED,
243         FB_MODE_IS_VESA
244     }, {
245         /* WUXGA */
246         "wuxga", 60, 1920, 1200, 6494, 80, 48, 26, 3, 32, 6,
247         FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED,
248         FB_MODE_IS_VESA
249     }
250 };
251 
252 
253 #define HEAD_A
254 #define HEAD_B
255 
256 #define BPP             4                       /* number of bytes per pixel */
257 
258 
259 static int ps3fb_mode;
260 module_param(ps3fb_mode, int, 0);
261 
262 static char *mode_option;
263 
264 static int ps3fb_cmp_mode(const struct fb_videomode *vmode,
265                           const struct fb_var_screeninfo *var)
266 {
267         long xres, yres, left_margin, right_margin, upper_margin, lower_margin;
268         long dx, dy;
269 
270         /* maximum values */
271         if (var->xres > vmode->xres || var->yres > vmode->yres ||
272             var->pixclock > vmode->pixclock ||
273             var->hsync_len > vmode->hsync_len ||
274             var->vsync_len > vmode->vsync_len)
275                 return -1;
276 
277         /* progressive/interlaced must match */
278         if ((var->vmode & FB_VMODE_MASK) != vmode->vmode)
279                 return -1;
280 
281         /* minimum resolution */
282         xres = max(var->xres, 1U);
283         yres = max(var->yres, 1U);
284 
285         /* minimum margins */
286         left_margin = max(var->left_margin, vmode->left_margin);
287         right_margin = max(var->right_margin, vmode->right_margin);
288         upper_margin = max(var->upper_margin, vmode->upper_margin);
289         lower_margin = max(var->lower_margin, vmode->lower_margin);
290 
291         /* resolution + margins may not exceed native parameters */
292         dx = ((long)vmode->left_margin + (long)vmode->xres +
293               (long)vmode->right_margin) -
294              (left_margin + xres + right_margin);
295         if (dx < 0)
296                 return -1;
297 
298         dy = ((long)vmode->upper_margin + (long)vmode->yres +
299               (long)vmode->lower_margin) -
300              (upper_margin + yres + lower_margin);
301         if (dy < 0)
302                 return -1;
303 
304         /* exact match */
305         if (!dx && !dy)
306                 return 0;
307 
308         /* resolution difference */
309         return (vmode->xres - xres) * (vmode->yres - yres);
310 }
311 
312 static const struct fb_videomode *ps3fb_native_vmode(enum ps3av_mode_num id)
313 {
314         return &ps3fb_modedb[FIRST_NATIVE_MODE_INDEX + id - 1];
315 }
316 
317 static const struct fb_videomode *ps3fb_vmode(int id)
318 {
319         u32 mode = id & PS3AV_MODE_MASK;
320 
321         if (mode < PS3AV_MODE_480I || mode > PS3AV_MODE_WUXGA)
322                 return NULL;
323 
324         if (mode <= PS3AV_MODE_1080P50 && !(id & PS3AV_MODE_FULL)) {
325                 /* Non-fullscreen broadcast mode */
326                 return &ps3fb_modedb[mode - 1];
327         }
328 
329         return ps3fb_native_vmode(mode);
330 }
331 
332 static unsigned int ps3fb_find_mode(struct fb_var_screeninfo *var,
333                                     u32 *ddr_line_length, u32 *xdr_line_length)
334 {
335         unsigned int id, best_id;
336         int diff, best_diff;
337         const struct fb_videomode *vmode;
338         long gap;
339 
340         best_id = 0;
341         best_diff = INT_MAX;
342         pr_debug("%s: wanted %u [%u] %u x %u [%u] %u\n", __func__,
343                  var->left_margin, var->xres, var->right_margin,
344                  var->upper_margin, var->yres, var->lower_margin);
345         for (id = PS3AV_MODE_480I; id <= PS3AV_MODE_WUXGA; id++) {
346                 vmode = ps3fb_native_vmode(id);
347                 diff = ps3fb_cmp_mode(vmode, var);
348                 pr_debug("%s: mode %u: %u [%u] %u x %u [%u] %u: diff = %d\n",
349                          __func__, id, vmode->left_margin, vmode->xres,
350                          vmode->right_margin, vmode->upper_margin,
351                          vmode->yres, vmode->lower_margin, diff);
352                 if (diff < 0)
353                         continue;
354                 if (diff < best_diff) {
355                         best_id = id;
356                         if (!diff)
357                                 break;
358                         best_diff = diff;
359                 }
360         }
361 
362         if (!best_id) {
363                 pr_debug("%s: no suitable mode found\n", __func__);
364                 return 0;
365         }
366 
367         id = best_id;
368         vmode = ps3fb_native_vmode(id);
369 
370         *ddr_line_length = vmode->xres * BPP;
371 
372         /* minimum resolution */
373         if (!var->xres)
374                 var->xres = 1;
375         if (!var->yres)
376                 var->yres = 1;
377 
378         /* minimum virtual resolution */
379         if (var->xres_virtual < var->xres)
380                 var->xres_virtual = var->xres;
381         if (var->yres_virtual < var->yres)
382                 var->yres_virtual = var->yres;
383 
384         /* minimum margins */
385         if (var->left_margin < vmode->left_margin)
386                 var->left_margin = vmode->left_margin;
387         if (var->right_margin < vmode->right_margin)
388                 var->right_margin = vmode->right_margin;
389         if (var->upper_margin < vmode->upper_margin)
390                 var->upper_margin = vmode->upper_margin;
391         if (var->lower_margin < vmode->lower_margin)
392                 var->lower_margin = vmode->lower_margin;
393 
394         /* extra margins */
395         gap = ((long)vmode->left_margin + (long)vmode->xres +
396                (long)vmode->right_margin) -
397               ((long)var->left_margin + (long)var->xres +
398                (long)var->right_margin);
399         if (gap > 0) {
400                 var->left_margin += gap/2;
401                 var->right_margin += (gap+1)/2;
402                 pr_debug("%s: rounded up H to %u [%u] %u\n", __func__,
403                          var->left_margin, var->xres, var->right_margin);
404         }
405 
406         gap = ((long)vmode->upper_margin + (long)vmode->yres +
407                (long)vmode->lower_margin) -
408               ((long)var->upper_margin + (long)var->yres +
409                (long)var->lower_margin);
410         if (gap > 0) {
411                 var->upper_margin += gap/2;
412                 var->lower_margin += (gap+1)/2;
413                 pr_debug("%s: rounded up V to %u [%u] %u\n", __func__,
414                          var->upper_margin, var->yres, var->lower_margin);
415         }
416 
417         /* fixed fields */
418         var->pixclock = vmode->pixclock;
419         var->hsync_len = vmode->hsync_len;
420         var->vsync_len = vmode->vsync_len;
421         var->sync = vmode->sync;
422 
423         if (ps3_compare_firmware_version(1, 9, 0) >= 0) {
424                 *xdr_line_length = GPU_ALIGN_UP(var->xres_virtual * BPP);
425                 if (*xdr_line_length > GPU_MAX_LINE_LENGTH)
426                         *xdr_line_length = GPU_MAX_LINE_LENGTH;
427         } else
428                 *xdr_line_length = *ddr_line_length;
429 
430         if (vmode->sync & FB_SYNC_BROADCAST) {
431                 /* Full broadcast modes have the full mode bit set */
432                 if (vmode->xres == var->xres && vmode->yres == var->yres)
433                         id |= PS3AV_MODE_FULL;
434         }
435 
436         pr_debug("%s: mode %u\n", __func__, id);
437         return id;
438 }
439 
440 static void ps3fb_sync_image(struct device *dev, u64 frame_offset,
441                              u64 dst_offset, u64 src_offset, u32 width,
442                              u32 height, u32 dst_line_length,
443                              u32 src_line_length)
444 {
445         int status;
446         u64 line_length;
447 
448         line_length = dst_line_length;
449         if (src_line_length != dst_line_length)
450                 line_length |= (u64)src_line_length << 32;
451 
452         src_offset += GPU_FB_START;
453 
454         mutex_lock(&ps3_gpu_mutex);
455         status = lv1_gpu_fb_blit(ps3fb.context_handle, dst_offset,
456                                  GPU_IOIF + src_offset,
457                                  L1GPU_FB_BLIT_WAIT_FOR_COMPLETION |
458                                  (width << 16) | height,
459                                  line_length);
460         mutex_unlock(&ps3_gpu_mutex);
461 
462         if (status)
463                 dev_err(dev, "%s: lv1_gpu_fb_blit failed: %d\n", __func__,
464                         status);
465 #ifdef HEAD_A
466         status = lv1_gpu_display_flip(ps3fb.context_handle, 0, frame_offset);
467         if (status)
468                 dev_err(dev, "%s: lv1_gpu_display_flip failed: %d\n", __func__,
469                         status);
470 #endif
471 #ifdef HEAD_B
472         status = lv1_gpu_display_flip(ps3fb.context_handle, 1, frame_offset);
473         if (status)
474                 dev_err(dev, "%s: lv1_gpu_display_flip failed: %d\n", __func__,
475                         status);
476 #endif
477 }
478 
479 static int ps3fb_sync(struct fb_info *info, u32 frame)
480 {
481         struct ps3fb_par *par = info->par;
482         int error = 0;
483         u64 ddr_base, xdr_base;
484 
485         if (frame > par->num_frames - 1) {
486                 dev_dbg(info->device, "%s: invalid frame number (%u)\n",
487                         __func__, frame);
488                 error = -EINVAL;
489                 goto out;
490         }
491 
492         xdr_base = frame * par->xdr_frame_size;
493         ddr_base = frame * par->ddr_frame_size;
494 
495         ps3fb_sync_image(info->device, ddr_base + par->full_offset,
496                          ddr_base + par->fb_offset, xdr_base + par->pan_offset,
497                          par->width, par->height, par->ddr_line_length,
498                          info->fix.line_length);
499 
500 out:
501         return error;
502 }
503 
504 static int ps3fb_open(struct fb_info *info, int user)
505 {
506         atomic_inc(&ps3fb.f_count);
507         return 0;
508 }
509 
510 static int ps3fb_release(struct fb_info *info, int user)
511 {
512         if (atomic_dec_and_test(&ps3fb.f_count)) {
513                 if (atomic_read(&ps3fb.ext_flip)) {
514                         atomic_set(&ps3fb.ext_flip, 0);
515                         if (console_trylock()) {
516                                 ps3fb_sync(info, 0);    /* single buffer */
517                                 console_unlock();
518                         }
519                 }
520         }
521         return 0;
522 }
523 
524     /*
525      *  Setting the video mode has been split into two parts.
526      *  First part, xxxfb_check_var, must not write anything
527      *  to hardware, it should only verify and adjust var.
528      *  This means it doesn't alter par but it does use hardware
529      *  data from it to check this var.
530      */
531 
532 static int ps3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
533 {
534         u32 xdr_line_length, ddr_line_length;
535         int mode;
536 
537         mode = ps3fb_find_mode(var, &ddr_line_length, &xdr_line_length);
538         if (!mode)
539                 return -EINVAL;
540 
541         /* Virtual screen */
542         if (var->xres_virtual > xdr_line_length / BPP) {
543                 dev_dbg(info->device,
544                         "Horizontal virtual screen size too large\n");
545                 return -EINVAL;
546         }
547 
548         if (var->xoffset + var->xres > var->xres_virtual ||
549             var->yoffset + var->yres > var->yres_virtual) {
550                 dev_dbg(info->device, "panning out-of-range\n");
551                 return -EINVAL;
552         }
553 
554         /* We support ARGB8888 only */
555         if (var->bits_per_pixel > 32 || var->grayscale ||
556             var->red.offset > 16 || var->green.offset > 8 ||
557             var->blue.offset > 0 || var->transp.offset > 24 ||
558             var->red.length > 8 || var->green.length > 8 ||
559             var->blue.length > 8 || var->transp.length > 8 ||
560             var->red.msb_right || var->green.msb_right ||
561             var->blue.msb_right || var->transp.msb_right || var->nonstd) {
562                 dev_dbg(info->device, "We support ARGB8888 only\n");
563                 return -EINVAL;
564         }
565 
566         var->bits_per_pixel = 32;
567         var->red.offset = 16;
568         var->green.offset = 8;
569         var->blue.offset = 0;
570         var->transp.offset = 24;
571         var->red.length = 8;
572         var->green.length = 8;
573         var->blue.length = 8;
574         var->transp.length = 8;
575         var->red.msb_right = 0;
576         var->green.msb_right = 0;
577         var->blue.msb_right = 0;
578         var->transp.msb_right = 0;
579 
580         /* Rotation is not supported */
581         if (var->rotate) {
582                 dev_dbg(info->device, "Rotation is not supported\n");
583                 return -EINVAL;
584         }
585 
586         /* Memory limit */
587         if (var->yres_virtual * xdr_line_length > info->fix.smem_len) {
588                 dev_dbg(info->device, "Not enough memory\n");
589                 return -ENOMEM;
590         }
591 
592         var->height = -1;
593         var->width = -1;
594 
595         return 0;
596 }
597 
598     /*
599      * This routine actually sets the video mode.
600      */
601 
602 static int ps3fb_set_par(struct fb_info *info)
603 {
604         struct ps3fb_par *par = info->par;
605         unsigned int mode, ddr_line_length, xdr_line_length, lines, maxlines;
606         unsigned int ddr_xoff, ddr_yoff, offset;
607         const struct fb_videomode *vmode;
608         u64 dst;
609 
610         mode = ps3fb_find_mode(&info->var, &ddr_line_length, &xdr_line_length);
611         if (!mode)
612                 return -EINVAL;
613 
614         vmode = ps3fb_native_vmode(mode & PS3AV_MODE_MASK);
615 
616         info->fix.xpanstep = info->var.xres_virtual > info->var.xres ? 1 : 0;
617         info->fix.ypanstep = info->var.yres_virtual > info->var.yres ? 1 : 0;
618         info->fix.line_length = xdr_line_length;
619 
620         par->ddr_line_length = ddr_line_length;
621         par->ddr_frame_size = vmode->yres * ddr_line_length;
622         par->xdr_frame_size = info->var.yres_virtual * xdr_line_length;
623 
624         par->num_frames = info->fix.smem_len /
625                           max(par->ddr_frame_size, par->xdr_frame_size);
626 
627         /* Keep the special bits we cannot set using fb_var_screeninfo */
628         par->new_mode_id = (par->new_mode_id & ~PS3AV_MODE_MASK) | mode;
629 
630         par->width = info->var.xres;
631         par->height = info->var.yres;
632 
633         /* Start of the virtual frame buffer (relative to fullscreen) */
634         ddr_xoff = info->var.left_margin - vmode->left_margin;
635         ddr_yoff = info->var.upper_margin - vmode->upper_margin;
636         offset = ddr_yoff * ddr_line_length + ddr_xoff * BPP;
637 
638         par->fb_offset = GPU_ALIGN_UP(offset);
639         par->full_offset = par->fb_offset - offset;
640         par->pan_offset = info->var.yoffset * xdr_line_length +
641                           info->var.xoffset * BPP;
642 
643         if (par->new_mode_id != par->mode_id) {
644                 if (ps3av_set_video_mode(par->new_mode_id)) {
645                         par->new_mode_id = par->mode_id;
646                         return -EINVAL;
647                 }
648                 par->mode_id = par->new_mode_id;
649         }
650 
651         /* Clear XDR frame buffer memory */
652         memset((void __force *)info->screen_base, 0, info->fix.smem_len);
653 
654         /* Clear DDR frame buffer memory */
655         lines = vmode->yres * par->num_frames;
656         if (par->full_offset)
657                 lines++;
658         maxlines = info->fix.smem_len / ddr_line_length;
659         for (dst = 0; lines; dst += maxlines * ddr_line_length) {
660                 unsigned int l = min(lines, maxlines);
661                 ps3fb_sync_image(info->device, 0, dst, 0, vmode->xres, l,
662                                  ddr_line_length, ddr_line_length);
663                 lines -= l;
664         }
665 
666         return 0;
667 }
668 
669     /*
670      *  Set a single color register. The values supplied are already
671      *  rounded down to the hardware's capabilities (according to the
672      *  entries in the var structure). Return != 0 for invalid regno.
673      */
674 
675 static int ps3fb_setcolreg(unsigned int regno, unsigned int red,
676                            unsigned int green, unsigned int blue,
677                            unsigned int transp, struct fb_info *info)
678 {
679         if (regno >= 16)
680                 return 1;
681 
682         red >>= 8;
683         green >>= 8;
684         blue >>= 8;
685         transp >>= 8;
686 
687         ((u32 *)info->pseudo_palette)[regno] = transp << 24 | red << 16 |
688                                                green << 8 | blue;
689         return 0;
690 }
691 
692 static int ps3fb_pan_display(struct fb_var_screeninfo *var,
693                              struct fb_info *info)
694 {
695         struct ps3fb_par *par = info->par;
696 
697         par->pan_offset = var->yoffset * info->fix.line_length +
698                           var->xoffset * BPP;
699         return 0;
700 }
701 
702     /*
703      *  As we have a virtual frame buffer, we need our own mmap function
704      */
705 
706 static int ps3fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
707 {
708         int r;
709 
710         r = vm_iomap_memory(vma, info->fix.smem_start, info->fix.smem_len);
711 
712         dev_dbg(info->device, "ps3fb: mmap framebuffer P(%lx)->V(%lx)\n",
713                 info->fix.smem_start + (vma->vm_pgoff << PAGE_SHIFT),
714                 vma->vm_start);
715 
716         return r;
717 }
718 
719     /*
720      * Blank the display
721      */
722 
723 static int ps3fb_blank(int blank, struct fb_info *info)
724 {
725         int retval;
726 
727         dev_dbg(info->device, "%s: blank:%d\n", __func__, blank);
728         switch (blank) {
729         case FB_BLANK_POWERDOWN:
730         case FB_BLANK_HSYNC_SUSPEND:
731         case FB_BLANK_VSYNC_SUSPEND:
732         case FB_BLANK_NORMAL:
733                 retval = ps3av_video_mute(1);   /* mute on */
734                 if (!retval)
735                         ps3fb.is_blanked = 1;
736                 break;
737 
738         default:                /* unblank */
739                 retval = ps3av_video_mute(0);   /* mute off */
740                 if (!retval)
741                         ps3fb.is_blanked = 0;
742                 break;
743         }
744         return retval;
745 }
746 
747 static int ps3fb_get_vblank(struct fb_vblank *vblank)
748 {
749         memset(vblank, 0, sizeof(*vblank));
750         vblank->flags = FB_VBLANK_HAVE_VSYNC;
751         return 0;
752 }
753 
754 static int ps3fb_wait_for_vsync(u32 crtc)
755 {
756         int ret;
757         u64 count;
758 
759         count = ps3fb.vblank_count;
760         ret = wait_event_interruptible_timeout(ps3fb.wait_vsync,
761                                                count != ps3fb.vblank_count,
762                                                HZ / 10);
763         if (!ret)
764                 return -ETIMEDOUT;
765 
766         return 0;
767 }
768 
769 
770     /*
771      * ioctl
772      */
773 
774 static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
775                        unsigned long arg)
776 {
777         void __user *argp = (void __user *)arg;
778         u32 val;
779         int retval = -EFAULT;
780 
781         switch (cmd) {
782         case FBIOGET_VBLANK:
783                 {
784                         struct fb_vblank vblank;
785                         dev_dbg(info->device, "FBIOGET_VBLANK:\n");
786                         retval = ps3fb_get_vblank(&vblank);
787                         if (retval)
788                                 break;
789 
790                         if (copy_to_user(argp, &vblank, sizeof(vblank)))
791                                 retval = -EFAULT;
792                         break;
793                 }
794 
795         case FBIO_WAITFORVSYNC:
796                 {
797                         u32 crt;
798                         dev_dbg(info->device, "FBIO_WAITFORVSYNC:\n");
799                         if (get_user(crt, (u32 __user *) arg))
800                                 break;
801 
802                         retval = ps3fb_wait_for_vsync(crt);
803                         break;
804                 }
805 
806         case PS3FB_IOCTL_SETMODE:
807                 {
808                         struct ps3fb_par *par = info->par;
809                         const struct fb_videomode *vmode;
810                         struct fb_var_screeninfo var;
811 
812                         if (copy_from_user(&val, argp, sizeof(val)))
813                                 break;
814 
815                         if (!(val & PS3AV_MODE_MASK)) {
816                                 u32 id = ps3av_get_auto_mode();
817                                 if (id > 0)
818                                         val = (val & ~PS3AV_MODE_MASK) | id;
819                         }
820                         dev_dbg(info->device, "PS3FB_IOCTL_SETMODE:%x\n", val);
821                         retval = -EINVAL;
822                         vmode = ps3fb_vmode(val);
823                         if (vmode) {
824                                 var = info->var;
825                                 fb_videomode_to_var(&var, vmode);
826                                 console_lock();
827                                 info->flags |= FBINFO_MISC_USEREVENT;
828                                 /* Force, in case only special bits changed */
829                                 var.activate |= FB_ACTIVATE_FORCE;
830                                 par->new_mode_id = val;
831                                 retval = fb_set_var(info, &var);
832                                 info->flags &= ~FBINFO_MISC_USEREVENT;
833                                 console_unlock();
834                         }
835                         break;
836                 }
837 
838         case PS3FB_IOCTL_GETMODE:
839                 val = ps3av_get_mode();
840                 dev_dbg(info->device, "PS3FB_IOCTL_GETMODE:%x\n", val);
841                 if (!copy_to_user(argp, &val, sizeof(val)))
842                         retval = 0;
843                 break;
844 
845         case PS3FB_IOCTL_SCREENINFO:
846                 {
847                         struct ps3fb_par *par = info->par;
848                         struct ps3fb_ioctl_res res;
849                         dev_dbg(info->device, "PS3FB_IOCTL_SCREENINFO:\n");
850                         res.xres = info->fix.line_length / BPP;
851                         res.yres = info->var.yres_virtual;
852                         res.xoff = (res.xres - info->var.xres) / 2;
853                         res.yoff = (res.yres - info->var.yres) / 2;
854                         res.num_frames = par->num_frames;
855                         if (!copy_to_user(argp, &res, sizeof(res)))
856                                 retval = 0;
857                         break;
858                 }
859 
860         case PS3FB_IOCTL_ON:
861                 dev_dbg(info->device, "PS3FB_IOCTL_ON:\n");
862                 atomic_inc(&ps3fb.ext_flip);
863                 retval = 0;
864                 break;
865 
866         case PS3FB_IOCTL_OFF:
867                 dev_dbg(info->device, "PS3FB_IOCTL_OFF:\n");
868                 atomic_dec_if_positive(&ps3fb.ext_flip);
869                 retval = 0;
870                 break;
871 
872         case PS3FB_IOCTL_FSEL:
873                 if (copy_from_user(&val, argp, sizeof(val)))
874                         break;
875 
876                 dev_dbg(info->device, "PS3FB_IOCTL_FSEL:%d\n", val);
877                 console_lock();
878                 retval = ps3fb_sync(info, val);
879                 console_unlock();
880                 break;
881 
882         default:
883                 retval = -ENOIOCTLCMD;
884                 break;
885         }
886         return retval;
887 }
888 
889 static int ps3fbd(void *arg)
890 {
891         struct fb_info *info = arg;
892 
893         set_freezable();
894         while (!kthread_should_stop()) {
895                 try_to_freeze();
896                 set_current_state(TASK_INTERRUPTIBLE);
897                 if (ps3fb.is_kicked) {
898                         ps3fb.is_kicked = 0;
899                         console_lock();
900                         ps3fb_sync(info, 0);    /* single buffer */
901                         console_unlock();
902                 }
903                 schedule();
904         }
905         return 0;
906 }
907 
908 static irqreturn_t ps3fb_vsync_interrupt(int irq, void *ptr)
909 {
910         struct device *dev = ptr;
911         u64 v1;
912         int status;
913         struct display_head *head = &ps3fb.dinfo->display_head[1];
914 
915         status = lv1_gpu_context_intr(ps3fb.context_handle, &v1);
916         if (status) {
917                 dev_err(dev, "%s: lv1_gpu_context_intr failed: %d\n", __func__,
918                         status);
919                 return IRQ_NONE;
920         }
921 
922         if (v1 & (1 << GPU_INTR_STATUS_VSYNC_1)) {
923                 /* VSYNC */
924                 ps3fb.vblank_count = head->vblank_count;
925                 if (ps3fb.task && !ps3fb.is_blanked &&
926                     !atomic_read(&ps3fb.ext_flip)) {
927                         ps3fb.is_kicked = 1;
928                         wake_up_process(ps3fb.task);
929                 }
930                 wake_up_interruptible(&ps3fb.wait_vsync);
931         }
932 
933         return IRQ_HANDLED;
934 }
935 
936 
937 static struct fb_ops ps3fb_ops = {
938         .fb_open        = ps3fb_open,
939         .fb_release     = ps3fb_release,
940         .fb_read        = fb_sys_read,
941         .fb_write       = fb_sys_write,
942         .fb_check_var   = ps3fb_check_var,
943         .fb_set_par     = ps3fb_set_par,
944         .fb_setcolreg   = ps3fb_setcolreg,
945         .fb_pan_display = ps3fb_pan_display,
946         .fb_fillrect    = sys_fillrect,
947         .fb_copyarea    = sys_copyarea,
948         .fb_imageblit   = sys_imageblit,
949         .fb_mmap        = ps3fb_mmap,
950         .fb_blank       = ps3fb_blank,
951         .fb_ioctl       = ps3fb_ioctl,
952         .fb_compat_ioctl = ps3fb_ioctl
953 };
954 
955 static struct fb_fix_screeninfo ps3fb_fix = {
956         .id =           DEVICE_NAME,
957         .type =         FB_TYPE_PACKED_PIXELS,
958         .visual =       FB_VISUAL_TRUECOLOR,
959         .accel =        FB_ACCEL_NONE,
960 };
961 
962 static int ps3fb_probe(struct ps3_system_bus_device *dev)
963 {
964         struct fb_info *info;
965         struct ps3fb_par *par;
966         int retval;
967         u64 ddr_lpar = 0;
968         u64 lpar_dma_control = 0;
969         u64 lpar_driver_info = 0;
970         u64 lpar_reports = 0;
971         u64 lpar_reports_size = 0;
972         u64 xdr_lpar;
973         struct gpu_driver_info *dinfo;
974         void *fb_start;
975         int status;
976         struct task_struct *task;
977         unsigned long max_ps3fb_size;
978 
979         if (ps3fb_videomemory.size < GPU_CMD_BUF_SIZE) {
980                 dev_err(&dev->core, "%s: Not enough video memory\n", __func__);
981                 return -ENOMEM;
982         }
983 
984         retval = ps3_open_hv_device(dev);
985         if (retval) {
986                 dev_err(&dev->core, "%s: ps3_open_hv_device failed\n",
987                         __func__);
988                 goto err;
989         }
990 
991         if (!ps3fb_mode)
992                 ps3fb_mode = ps3av_get_mode();
993         dev_dbg(&dev->core, "ps3fb_mode: %d\n", ps3fb_mode);
994 
995         atomic_set(&ps3fb.f_count, -1); /* fbcon opens ps3fb */
996         atomic_set(&ps3fb.ext_flip, 0); /* for flip with vsync */
997         init_waitqueue_head(&ps3fb.wait_vsync);
998 
999 #ifdef HEAD_A
1000         status = lv1_gpu_display_sync(0x0, 0, L1GPU_DISPLAY_SYNC_VSYNC);
1001         if (status) {
1002                 dev_err(&dev->core, "%s: lv1_gpu_display_sync failed: %d\n",
1003                         __func__, status);
1004                 retval = -ENODEV;
1005                 goto err_close_device;
1006         }
1007 #endif
1008 #ifdef HEAD_B
1009         status = lv1_gpu_display_sync(0x0, 1, L1GPU_DISPLAY_SYNC_VSYNC);
1010         if (status) {
1011                 dev_err(&dev->core, "%s: lv1_gpu_display_sync failed: %d\n",
1012                         __func__, status);
1013                 retval = -ENODEV;
1014                 goto err_close_device;
1015         }
1016 #endif
1017 
1018         max_ps3fb_size = _ALIGN_UP(GPU_IOIF, 256*1024*1024) - GPU_IOIF;
1019         if (ps3fb_videomemory.size > max_ps3fb_size) {
1020                 dev_info(&dev->core, "Limiting ps3fb mem size to %lu bytes\n",
1021                          max_ps3fb_size);
1022                 ps3fb_videomemory.size = max_ps3fb_size;
1023         }
1024 
1025         /* get gpu context handle */
1026         status = lv1_gpu_memory_allocate(ps3fb_videomemory.size, 0, 0, 0, 0,
1027                                          &ps3fb.memory_handle, &ddr_lpar);
1028         if (status) {
1029                 dev_err(&dev->core, "%s: lv1_gpu_memory_allocate failed: %d\n",
1030                         __func__, status);
1031                 retval = -ENOMEM;
1032                 goto err_close_device;
1033         }
1034         dev_dbg(&dev->core, "ddr:lpar:0x%llx\n", ddr_lpar);
1035 
1036         status = lv1_gpu_context_allocate(ps3fb.memory_handle, 0,
1037                                           &ps3fb.context_handle,
1038                                           &lpar_dma_control, &lpar_driver_info,
1039                                           &lpar_reports, &lpar_reports_size);
1040         if (status) {
1041                 dev_err(&dev->core,
1042                         "%s: lv1_gpu_context_allocate failed: %d\n", __func__,
1043                         status);
1044                 retval = -ENOMEM;
1045                 goto err_gpu_memory_free;
1046         }
1047 
1048         /* vsync interrupt */
1049         dinfo = (void __force *)ioremap(lpar_driver_info, 128 * 1024);
1050         if (!dinfo) {
1051                 dev_err(&dev->core, "%s: ioremap failed\n", __func__);
1052                 retval = -ENOMEM;
1053                 goto err_gpu_context_free;
1054         }
1055 
1056         ps3fb.dinfo = dinfo;
1057         dev_dbg(&dev->core, "version_driver:%x\n", dinfo->version_driver);
1058         dev_dbg(&dev->core, "irq outlet:%x\n", dinfo->irq.irq_outlet);
1059         dev_dbg(&dev->core, "version_gpu: %x memory_size: %x ch: %x "
1060                 "core_freq: %d mem_freq:%d\n", dinfo->version_gpu,
1061                 dinfo->memory_size, dinfo->hardware_channel,
1062                 dinfo->nvcore_frequency/1000000,
1063                 dinfo->memory_frequency/1000000);
1064 
1065         if (dinfo->version_driver != GPU_DRIVER_INFO_VERSION) {
1066                 dev_err(&dev->core, "%s: version_driver err:%x\n", __func__,
1067                         dinfo->version_driver);
1068                 retval = -EINVAL;
1069                 goto err_iounmap_dinfo;
1070         }
1071 
1072         retval = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, dinfo->irq.irq_outlet,
1073                                     &ps3fb.irq_no);
1074         if (retval) {
1075                 dev_err(&dev->core, "%s: ps3_alloc_irq failed %d\n", __func__,
1076                         retval);
1077                 goto err_iounmap_dinfo;
1078         }
1079 
1080         retval = request_irq(ps3fb.irq_no, ps3fb_vsync_interrupt,
1081                              0, DEVICE_NAME, &dev->core);
1082         if (retval) {
1083                 dev_err(&dev->core, "%s: request_irq failed %d\n", __func__,
1084                         retval);
1085                 goto err_destroy_plug;
1086         }
1087 
1088         dinfo->irq.mask = (1 << GPU_INTR_STATUS_VSYNC_1) |
1089                           (1 << GPU_INTR_STATUS_FLIP_1);
1090 
1091         /* Clear memory to prevent kernel info leakage into userspace */
1092         memset(ps3fb_videomemory.address, 0, ps3fb_videomemory.size);
1093 
1094         xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb_videomemory.address));
1095 
1096         status = lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF,
1097                                        xdr_lpar, ps3fb_videomemory.size,
1098                                        CBE_IOPTE_PP_W | CBE_IOPTE_PP_R |
1099                                        CBE_IOPTE_M);
1100         if (status) {
1101                 dev_err(&dev->core, "%s: lv1_gpu_context_iomap failed: %d\n",
1102                         __func__, status);
1103                 retval =  -ENXIO;
1104                 goto err_free_irq;
1105         }
1106 
1107         dev_dbg(&dev->core, "video:%p ioif:%lx lpar:%llx size:%lx\n",
1108                 ps3fb_videomemory.address, GPU_IOIF, xdr_lpar,
1109                 ps3fb_videomemory.size);
1110 
1111         status = lv1_gpu_fb_setup(ps3fb.context_handle, xdr_lpar,
1112                                   GPU_CMD_BUF_SIZE, GPU_IOIF);
1113         if (status) {
1114                 dev_err(&dev->core, "%s: lv1_gpu_fb_setup failed: %d\n",
1115                         __func__, status);
1116                 retval = -ENXIO;
1117                 goto err_context_unmap;
1118         }
1119 
1120         info = framebuffer_alloc(sizeof(struct ps3fb_par), &dev->core);
1121         if (!info) {
1122                 retval = -ENOMEM;
1123                 goto err_context_fb_close;
1124         }
1125 
1126         par = info->par;
1127         par->mode_id = ~ps3fb_mode;     /* != ps3fb_mode, to trigger change */
1128         par->new_mode_id = ps3fb_mode;
1129         par->num_frames = 1;
1130 
1131         info->fbops = &ps3fb_ops;
1132         info->fix = ps3fb_fix;
1133 
1134         /*
1135          * The GPU command buffer is at the start of video memory
1136          * As we don't use the full command buffer, we can put the actual
1137          * frame buffer at offset GPU_FB_START and save some precious XDR
1138          * memory
1139          */
1140         fb_start = ps3fb_videomemory.address + GPU_FB_START;
1141         info->screen_base = (char __force __iomem *)fb_start;
1142         info->fix.smem_start = __pa(fb_start);
1143         info->fix.smem_len = ps3fb_videomemory.size - GPU_FB_START;
1144 
1145         info->pseudo_palette = par->pseudo_palette;
1146         info->flags = FBINFO_DEFAULT | FBINFO_READS_FAST |
1147                       FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
1148 
1149         retval = fb_alloc_cmap(&info->cmap, 256, 0);
1150         if (retval < 0)
1151                 goto err_framebuffer_release;
1152 
1153         if (!fb_find_mode(&info->var, info, mode_option, ps3fb_modedb,
1154                           ARRAY_SIZE(ps3fb_modedb),
1155                           ps3fb_vmode(par->new_mode_id), 32)) {
1156                 retval = -EINVAL;
1157                 goto err_fb_dealloc;
1158         }
1159 
1160         fb_videomode_to_modelist(ps3fb_modedb, ARRAY_SIZE(ps3fb_modedb),
1161                                  &info->modelist);
1162 
1163         retval = register_framebuffer(info);
1164         if (retval < 0)
1165                 goto err_fb_dealloc;
1166 
1167         ps3_system_bus_set_drvdata(dev, info);
1168 
1169         dev_info(info->device, "%s %s, using %u KiB of video memory\n",
1170                  dev_driver_string(info->dev), dev_name(info->dev),
1171                  info->fix.smem_len >> 10);
1172 
1173         task = kthread_run(ps3fbd, info, DEVICE_NAME);
1174         if (IS_ERR(task)) {
1175                 retval = PTR_ERR(task);
1176                 goto err_unregister_framebuffer;
1177         }
1178 
1179         ps3fb.task = task;
1180 
1181         return 0;
1182 
1183 err_unregister_framebuffer:
1184         unregister_framebuffer(info);
1185 err_fb_dealloc:
1186         fb_dealloc_cmap(&info->cmap);
1187 err_framebuffer_release:
1188         framebuffer_release(info);
1189 err_context_fb_close:
1190         lv1_gpu_fb_close(ps3fb.context_handle);
1191 err_context_unmap:
1192         lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, xdr_lpar,
1193                               ps3fb_videomemory.size, CBE_IOPTE_M);
1194 err_free_irq:
1195         free_irq(ps3fb.irq_no, &dev->core);
1196 err_destroy_plug:
1197         ps3_irq_plug_destroy(ps3fb.irq_no);
1198 err_iounmap_dinfo:
1199         iounmap((u8 __force __iomem *)ps3fb.dinfo);
1200 err_gpu_context_free:
1201         lv1_gpu_context_free(ps3fb.context_handle);
1202 err_gpu_memory_free:
1203         lv1_gpu_memory_free(ps3fb.memory_handle);
1204 err_close_device:
1205         ps3_close_hv_device(dev);
1206 err:
1207         return retval;
1208 }
1209 
1210 static int ps3fb_shutdown(struct ps3_system_bus_device *dev)
1211 {
1212         struct fb_info *info = ps3_system_bus_get_drvdata(dev);
1213         u64 xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb_videomemory.address));
1214 
1215         dev_dbg(&dev->core, " -> %s:%d\n", __func__, __LINE__);
1216 
1217         atomic_inc(&ps3fb.ext_flip);    /* flip off */
1218         ps3fb.dinfo->irq.mask = 0;
1219 
1220         if (ps3fb.task) {
1221                 struct task_struct *task = ps3fb.task;
1222                 ps3fb.task = NULL;
1223                 kthread_stop(task);
1224         }
1225         if (ps3fb.irq_no) {
1226                 free_irq(ps3fb.irq_no, &dev->core);
1227                 ps3_irq_plug_destroy(ps3fb.irq_no);
1228         }
1229         if (info) {
1230                 unregister_framebuffer(info);
1231                 fb_dealloc_cmap(&info->cmap);
1232                 framebuffer_release(info);
1233                 ps3_system_bus_set_drvdata(dev, NULL);
1234         }
1235         iounmap((u8 __force __iomem *)ps3fb.dinfo);
1236         lv1_gpu_fb_close(ps3fb.context_handle);
1237         lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, xdr_lpar,
1238                               ps3fb_videomemory.size, CBE_IOPTE_M);
1239         lv1_gpu_context_free(ps3fb.context_handle);
1240         lv1_gpu_memory_free(ps3fb.memory_handle);
1241         ps3_close_hv_device(dev);
1242         dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
1243 
1244         return 0;
1245 }
1246 
1247 static struct ps3_system_bus_driver ps3fb_driver = {
1248         .match_id       = PS3_MATCH_ID_GPU,
1249         .match_sub_id   = PS3_MATCH_SUB_ID_GPU_FB,
1250         .core.name      = DEVICE_NAME,
1251         .core.owner     = THIS_MODULE,
1252         .probe          = ps3fb_probe,
1253         .remove         = ps3fb_shutdown,
1254         .shutdown       = ps3fb_shutdown,
1255 };
1256 
1257 static int __init ps3fb_setup(void)
1258 {
1259         char *options;
1260 
1261 #ifdef MODULE
1262         return 0;
1263 #endif
1264 
1265         if (fb_get_options(DEVICE_NAME, &options))
1266                 return -ENXIO;
1267 
1268         if (!options || !*options)
1269                 return 0;
1270 
1271         while (1) {
1272                 char *this_opt = strsep(&options, ",");
1273 
1274                 if (!this_opt)
1275                         break;
1276                 if (!*this_opt)
1277                         continue;
1278                 if (!strncmp(this_opt, "mode:", 5))
1279                         ps3fb_mode = simple_strtoul(this_opt + 5, NULL, 0);
1280                 else
1281                         mode_option = this_opt;
1282         }
1283         return 0;
1284 }
1285 
1286 static int __init ps3fb_init(void)
1287 {
1288         if (!ps3fb_videomemory.address ||  ps3fb_setup())
1289                 return -ENXIO;
1290 
1291         return ps3_system_bus_driver_register(&ps3fb_driver);
1292 }
1293 
1294 static void __exit ps3fb_exit(void)
1295 {
1296         pr_debug(" -> %s:%d\n", __func__, __LINE__);
1297         ps3_system_bus_driver_unregister(&ps3fb_driver);
1298         pr_debug(" <- %s:%d\n", __func__, __LINE__);
1299 }
1300 
1301 module_init(ps3fb_init);
1302 module_exit(ps3fb_exit);
1303 
1304 MODULE_LICENSE("GPL");
1305 MODULE_DESCRIPTION("PS3 GPU Frame Buffer Driver");
1306 MODULE_AUTHOR("Sony Computer Entertainment Inc.");
1307 MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_FB);
1308 

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