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Remove 'type' argument from access_ok() function
[thirdparty/kernel/linux.git] / drivers / media / pci / ivtv / ivtvfb.c
1 /*
2 On Screen Display cx23415 Framebuffer driver
3
4 This module presents the cx23415 OSD (onscreen display) framebuffer memory
5 as a standard Linux /dev/fb style framebuffer device. The framebuffer has
6 support for 8, 16 & 32 bpp packed pixel formats with alpha channel. In 16bpp
7 mode, there is a choice of a three color depths (12, 15 or 16 bits), but no
8 local alpha. The colorspace is selectable between rgb & yuv.
9 Depending on the TV standard configured in the ivtv module at load time,
10 the initial resolution is either 640x400 (NTSC) or 640x480 (PAL) at 8bpp.
11 Video timings are locked to ensure a vertical refresh rate of 50Hz (PAL)
12 or 59.94 (NTSC)
13
14 Copyright (c) 2003 Matt T. Yourst <yourst@yourst.com>
15
16 Derived from drivers/video/vesafb.c
17 Portions (c) 1998 Gerd Knorr <kraxel@goldbach.in-berlin.de>
18
19 2.6 kernel port:
20 Copyright (C) 2004 Matthias Badaire
21
22 Copyright (C) 2004 Chris Kennedy <c@groovy.org>
23
24 Copyright (C) 2006 Ian Armstrong <ian@iarmst.demon.co.uk>
25
26 This program is free software; you can redistribute it and/or modify
27 it under the terms of the GNU General Public License as published by
28 the Free Software Foundation; either version 2 of the License, or
29 (at your option) any later version.
30
31 This program is distributed in the hope that it will be useful,
32 but WITHOUT ANY WARRANTY; without even the implied warranty of
33 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
34 GNU General Public License for more details.
35
36 You should have received a copy of the GNU General Public License
37 along with this program; if not, write to the Free Software
38 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
39 */
40
41 #include "ivtv-driver.h"
42 #include "ivtv-cards.h"
43 #include "ivtv-i2c.h"
44 #include "ivtv-udma.h"
45 #include "ivtv-mailbox.h"
46 #include "ivtv-firmware.h"
47
48 #include <linux/fb.h>
49 #include <linux/ivtvfb.h>
50
51 #ifdef CONFIG_X86_64
52 #include <asm/pat.h>
53 #endif
54
55 /* card parameters */
56 static int ivtvfb_card_id = -1;
57 static int ivtvfb_debug = 0;
58 static bool osd_laced;
59 static int osd_depth;
60 static int osd_upper;
61 static int osd_left;
62 static int osd_yres;
63 static int osd_xres;
64
65 module_param(ivtvfb_card_id, int, 0444);
66 module_param_named(debug,ivtvfb_debug, int, 0644);
67 module_param(osd_laced, bool, 0444);
68 module_param(osd_depth, int, 0444);
69 module_param(osd_upper, int, 0444);
70 module_param(osd_left, int, 0444);
71 module_param(osd_yres, int, 0444);
72 module_param(osd_xres, int, 0444);
73
74 MODULE_PARM_DESC(ivtvfb_card_id,
75 "Only use framebuffer of the specified ivtv card (0-31)\n"
76 "\t\t\tdefault -1: initialize all available framebuffers");
77
78 MODULE_PARM_DESC(debug,
79 "Debug level (bitmask). Default: errors only\n"
80 "\t\t\t(debug = 3 gives full debugging)");
81
82 /* Why upper, left, xres, yres, depth, laced ? To match terminology used
83 by fbset.
84 Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */
85
86 MODULE_PARM_DESC(osd_laced,
87 "Interlaced mode\n"
88 "\t\t\t0=off\n"
89 "\t\t\t1=on\n"
90 "\t\t\tdefault off");
91
92 MODULE_PARM_DESC(osd_depth,
93 "Bits per pixel - 8, 16, 32\n"
94 "\t\t\tdefault 8");
95
96 MODULE_PARM_DESC(osd_upper,
97 "Vertical start position\n"
98 "\t\t\tdefault 0 (Centered)");
99
100 MODULE_PARM_DESC(osd_left,
101 "Horizontal start position\n"
102 "\t\t\tdefault 0 (Centered)");
103
104 MODULE_PARM_DESC(osd_yres,
105 "Display height\n"
106 "\t\t\tdefault 480 (PAL)\n"
107 "\t\t\t 400 (NTSC)");
108
109 MODULE_PARM_DESC(osd_xres,
110 "Display width\n"
111 "\t\t\tdefault 640");
112
113 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong");
114 MODULE_LICENSE("GPL");
115
116 /* --------------------------------------------------------------------- */
117
118 #define IVTVFB_DBGFLG_WARN (1 << 0)
119 #define IVTVFB_DBGFLG_INFO (1 << 1)
120
121 #define IVTVFB_DEBUG(x, type, fmt, args...) \
122 do { \
123 if ((x) & ivtvfb_debug) \
124 printk(KERN_INFO "ivtvfb%d " type ": " fmt, itv->instance , ## args); \
125 } while (0)
126 #define IVTVFB_DEBUG_WARN(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_WARN, "warning", fmt , ## args)
127 #define IVTVFB_DEBUG_INFO(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_INFO, "info", fmt , ## args)
128
129 /* Standard kernel messages */
130 #define IVTVFB_ERR(fmt, args...) printk(KERN_ERR "ivtvfb%d: " fmt, itv->instance , ## args)
131 #define IVTVFB_WARN(fmt, args...) printk(KERN_WARNING "ivtvfb%d: " fmt, itv->instance , ## args)
132 #define IVTVFB_INFO(fmt, args...) printk(KERN_INFO "ivtvfb%d: " fmt, itv->instance , ## args)
133
134 /* --------------------------------------------------------------------- */
135
136 #define IVTV_OSD_MAX_WIDTH 720
137 #define IVTV_OSD_MAX_HEIGHT 576
138
139 #define IVTV_OSD_BPP_8 0x00
140 #define IVTV_OSD_BPP_16_444 0x03
141 #define IVTV_OSD_BPP_16_555 0x02
142 #define IVTV_OSD_BPP_16_565 0x01
143 #define IVTV_OSD_BPP_32 0x04
144
145 struct osd_info {
146 /* Physical base address */
147 unsigned long video_pbase;
148 /* Relative base address (relative to start of decoder memory) */
149 u32 video_rbase;
150 /* Mapped base address */
151 volatile char __iomem *video_vbase;
152 /* Buffer size */
153 u32 video_buffer_size;
154
155 /* video_base rounded down as required by hardware MTRRs */
156 unsigned long fb_start_aligned_physaddr;
157 /* video_base rounded up as required by hardware MTRRs */
158 unsigned long fb_end_aligned_physaddr;
159 int wc_cookie;
160
161 /* Store the buffer offset */
162 int set_osd_coords_x;
163 int set_osd_coords_y;
164
165 /* Current dimensions (NOT VISIBLE SIZE!) */
166 int display_width;
167 int display_height;
168 int display_byte_stride;
169
170 /* Current bits per pixel */
171 int bits_per_pixel;
172 int bytes_per_pixel;
173
174 /* Frame buffer stuff */
175 struct fb_info ivtvfb_info;
176 struct fb_var_screeninfo ivtvfb_defined;
177 struct fb_fix_screeninfo ivtvfb_fix;
178
179 /* Used for a warm start */
180 struct fb_var_screeninfo fbvar_cur;
181 int blank_cur;
182 u32 palette_cur[256];
183 u32 pan_cur;
184 };
185
186 struct ivtv_osd_coords {
187 unsigned long offset;
188 unsigned long max_offset;
189 int pixel_stride;
190 int lines;
191 int x;
192 int y;
193 };
194
195 /* --------------------------------------------------------------------- */
196
197 /* ivtv API calls for framebuffer related support */
198
199 static int ivtvfb_get_framebuffer(struct ivtv *itv, u32 *fbbase,
200 u32 *fblength)
201 {
202 u32 data[CX2341X_MBOX_MAX_DATA];
203 int rc;
204
205 ivtv_firmware_check(itv, "ivtvfb_get_framebuffer");
206 rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0);
207 *fbbase = data[0];
208 *fblength = data[1];
209 return rc;
210 }
211
212 static int ivtvfb_get_osd_coords(struct ivtv *itv,
213 struct ivtv_osd_coords *osd)
214 {
215 struct osd_info *oi = itv->osd_info;
216 u32 data[CX2341X_MBOX_MAX_DATA];
217
218 ivtv_vapi_result(itv, data, CX2341X_OSD_GET_OSD_COORDS, 0);
219
220 osd->offset = data[0] - oi->video_rbase;
221 osd->max_offset = oi->display_width * oi->display_height * 4;
222 osd->pixel_stride = data[1];
223 osd->lines = data[2];
224 osd->x = data[3];
225 osd->y = data[4];
226 return 0;
227 }
228
229 static int ivtvfb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords *osd)
230 {
231 struct osd_info *oi = itv->osd_info;
232
233 oi->display_width = osd->pixel_stride;
234 oi->display_byte_stride = osd->pixel_stride * oi->bytes_per_pixel;
235 oi->set_osd_coords_x += osd->x;
236 oi->set_osd_coords_y = osd->y;
237
238 return ivtv_vapi(itv, CX2341X_OSD_SET_OSD_COORDS, 5,
239 osd->offset + oi->video_rbase,
240 osd->pixel_stride,
241 osd->lines, osd->x, osd->y);
242 }
243
244 static int ivtvfb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window)
245 {
246 int osd_height_limit = itv->is_out_50hz ? 576 : 480;
247
248 /* Only fail if resolution too high, otherwise fudge the start coords. */
249 if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH))
250 return -EINVAL;
251
252 /* Ensure we don't exceed display limits */
253 if (ivtv_window->top + ivtv_window->height > osd_height_limit) {
254 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n",
255 ivtv_window->top, ivtv_window->height);
256 ivtv_window->top = osd_height_limit - ivtv_window->height;
257 }
258
259 if (ivtv_window->left + ivtv_window->width > IVTV_OSD_MAX_WIDTH) {
260 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n",
261 ivtv_window->left, ivtv_window->width);
262 ivtv_window->left = IVTV_OSD_MAX_WIDTH - ivtv_window->width;
263 }
264
265 /* Set the OSD origin */
266 write_reg((ivtv_window->top << 16) | ivtv_window->left, 0x02a04);
267
268 /* How much to display */
269 write_reg(((ivtv_window->top+ivtv_window->height) << 16) | (ivtv_window->left+ivtv_window->width), 0x02a08);
270
271 /* Pass this info back the yuv handler */
272 itv->yuv_info.osd_vis_w = ivtv_window->width;
273 itv->yuv_info.osd_vis_h = ivtv_window->height;
274 itv->yuv_info.osd_x_offset = ivtv_window->left;
275 itv->yuv_info.osd_y_offset = ivtv_window->top;
276
277 return 0;
278 }
279
280 static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv,
281 unsigned long ivtv_dest_addr, void __user *userbuf,
282 int size_in_bytes)
283 {
284 DEFINE_WAIT(wait);
285 int got_sig = 0;
286
287 mutex_lock(&itv->udma.lock);
288 /* Map User DMA */
289 if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
290 mutex_unlock(&itv->udma.lock);
291 IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, Error with get_user_pages: %d bytes, %d pages returned\n",
292 size_in_bytes, itv->udma.page_count);
293
294 /* get_user_pages must have failed completely */
295 return -EIO;
296 }
297
298 IVTVFB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n",
299 size_in_bytes, itv->udma.page_count);
300
301 ivtv_udma_prepare(itv);
302 prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
303 /* if no UDMA is pending and no UDMA is in progress, then the DMA
304 is finished */
305 while (test_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags) ||
306 test_bit(IVTV_F_I_UDMA, &itv->i_flags)) {
307 /* don't interrupt if the DMA is in progress but break off
308 a still pending DMA. */
309 got_sig = signal_pending(current);
310 if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags))
311 break;
312 got_sig = 0;
313 schedule();
314 }
315 finish_wait(&itv->dma_waitq, &wait);
316
317 /* Unmap Last DMA Xfer */
318 ivtv_udma_unmap(itv);
319 mutex_unlock(&itv->udma.lock);
320 if (got_sig) {
321 IVTV_DEBUG_INFO("User stopped OSD\n");
322 return -EINTR;
323 }
324
325 return 0;
326 }
327
328 static int ivtvfb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
329 unsigned long dest_offset, int count)
330 {
331 DEFINE_WAIT(wait);
332 struct osd_info *oi = itv->osd_info;
333
334 /* Nothing to do */
335 if (count == 0) {
336 IVTVFB_DEBUG_WARN("ivtvfb_prep_frame: Nothing to do. count = 0\n");
337 return -EINVAL;
338 }
339
340 /* Check Total FB Size */
341 if ((dest_offset + count) > oi->video_buffer_size) {
342 IVTVFB_WARN("ivtvfb_prep_frame: Overflowing the framebuffer %ld, only %d available\n",
343 dest_offset + count, oi->video_buffer_size);
344 return -E2BIG;
345 }
346
347 /* Not fatal, but will have undesirable results */
348 if ((unsigned long)source & 3)
349 IVTVFB_WARN("ivtvfb_prep_frame: Source address not 32 bit aligned (%p)\n",
350 source);
351
352 if (dest_offset & 3)
353 IVTVFB_WARN("ivtvfb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset);
354
355 if (count & 3)
356 IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count);
357
358 /* Check Source */
359 if (!access_ok(source + dest_offset, count)) {
360 IVTVFB_WARN("Invalid userspace pointer %p\n", source);
361
362 IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source %p count %d\n",
363 dest_offset, source, count);
364 return -EINVAL;
365 }
366
367 /* OSD Address to send DMA to */
368 dest_offset += IVTV_DECODER_OFFSET + oi->video_rbase;
369
370 /* Fill Buffers */
371 return ivtvfb_prep_dec_dma_to_device(itv, dest_offset, source, count);
372 }
373
374 static ssize_t ivtvfb_write(struct fb_info *info, const char __user *buf,
375 size_t count, loff_t *ppos)
376 {
377 unsigned long p = *ppos;
378 void *dst;
379 int err = 0;
380 int dma_err;
381 unsigned long total_size;
382 struct ivtv *itv = (struct ivtv *) info->par;
383 unsigned long dma_offset =
384 IVTV_DECODER_OFFSET + itv->osd_info->video_rbase;
385 unsigned long dma_size;
386 u16 lead = 0, tail = 0;
387
388 if (info->state != FBINFO_STATE_RUNNING)
389 return -EPERM;
390
391 total_size = info->screen_size;
392
393 if (total_size == 0)
394 total_size = info->fix.smem_len;
395
396 if (p > total_size)
397 return -EFBIG;
398
399 if (count > total_size) {
400 err = -EFBIG;
401 count = total_size;
402 }
403
404 if (count + p > total_size) {
405 if (!err)
406 err = -ENOSPC;
407 count = total_size - p;
408 }
409
410 dst = (void __force *) (info->screen_base + p);
411
412 if (info->fbops->fb_sync)
413 info->fbops->fb_sync(info);
414
415 /* If transfer size > threshold and both src/dst
416 addresses are aligned, use DMA */
417 if (count >= 4096 &&
418 ((unsigned long)buf & 3) == ((unsigned long)dst & 3)) {
419 /* Odd address = can't DMA. Align */
420 if ((unsigned long)dst & 3) {
421 lead = 4 - ((unsigned long)dst & 3);
422 if (copy_from_user(dst, buf, lead))
423 return -EFAULT;
424 buf += lead;
425 dst += lead;
426 }
427 /* DMA resolution is 32 bits */
428 if ((count - lead) & 3)
429 tail = (count - lead) & 3;
430 /* DMA the data */
431 dma_size = count - lead - tail;
432 dma_err = ivtvfb_prep_dec_dma_to_device(itv,
433 p + lead + dma_offset, (void __user *)buf, dma_size);
434 if (dma_err)
435 return dma_err;
436 dst += dma_size;
437 buf += dma_size;
438 /* Copy any leftover data */
439 if (tail && copy_from_user(dst, buf, tail))
440 return -EFAULT;
441 } else if (copy_from_user(dst, buf, count)) {
442 return -EFAULT;
443 }
444
445 if (!err)
446 *ppos += count;
447
448 return (err) ? err : count;
449 }
450
451 static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
452 {
453 DEFINE_WAIT(wait);
454 struct ivtv *itv = (struct ivtv *)info->par;
455 int rc = 0;
456
457 switch (cmd) {
458 case FBIOGET_VBLANK: {
459 struct fb_vblank vblank;
460 u32 trace;
461
462 memset(&vblank, 0, sizeof(struct fb_vblank));
463
464 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
465 FB_VBLANK_HAVE_VSYNC;
466 trace = read_reg(IVTV_REG_DEC_LINE_FIELD) >> 16;
467 if (itv->is_out_50hz && trace > 312)
468 trace -= 312;
469 else if (itv->is_out_60hz && trace > 262)
470 trace -= 262;
471 if (trace == 1)
472 vblank.flags |= FB_VBLANK_VSYNCING;
473 vblank.count = itv->last_vsync_field;
474 vblank.vcount = trace;
475 vblank.hcount = 0;
476 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
477 return -EFAULT;
478 return 0;
479 }
480
481 case FBIO_WAITFORVSYNC:
482 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
483 if (!schedule_timeout(msecs_to_jiffies(50)))
484 rc = -ETIMEDOUT;
485 finish_wait(&itv->vsync_waitq, &wait);
486 return rc;
487
488 case IVTVFB_IOC_DMA_FRAME: {
489 struct ivtvfb_dma_frame args;
490
491 IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
492 if (copy_from_user(&args, (void __user *)arg, sizeof(args)))
493 return -EFAULT;
494
495 return ivtvfb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count);
496 }
497
498 default:
499 IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd);
500 return -EINVAL;
501 }
502 return 0;
503 }
504
505 /* Framebuffer device handling */
506
507 static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
508 {
509 struct osd_info *oi = itv->osd_info;
510 struct ivtv_osd_coords ivtv_osd;
511 struct v4l2_rect ivtv_window;
512 int osd_mode = -1;
513
514 IVTVFB_DEBUG_INFO("ivtvfb_set_var\n");
515
516 /* Select color space */
517 if (var->nonstd) /* YUV */
518 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
519 else /* RGB */
520 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
521
522 /* Set the color mode */
523 switch (var->bits_per_pixel) {
524 case 8:
525 osd_mode = IVTV_OSD_BPP_8;
526 break;
527 case 32:
528 osd_mode = IVTV_OSD_BPP_32;
529 break;
530 case 16:
531 switch (var->green.length) {
532 case 4:
533 osd_mode = IVTV_OSD_BPP_16_444;
534 break;
535 case 5:
536 osd_mode = IVTV_OSD_BPP_16_555;
537 break;
538 case 6:
539 osd_mode = IVTV_OSD_BPP_16_565;
540 break;
541 default:
542 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
543 }
544 break;
545 default:
546 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
547 }
548
549 /* Set video mode. Although rare, the display can become scrambled even
550 if we don't change mode. Always 'bounce' to osd_mode via mode 0 */
551 if (osd_mode != -1) {
552 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
553 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode);
554 }
555
556 oi->bits_per_pixel = var->bits_per_pixel;
557 oi->bytes_per_pixel = var->bits_per_pixel / 8;
558
559 /* Set the flicker filter */
560 switch (var->vmode & FB_VMODE_MASK) {
561 case FB_VMODE_NONINTERLACED: /* Filter on */
562 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1);
563 break;
564 case FB_VMODE_INTERLACED: /* Filter off */
565 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0);
566 break;
567 default:
568 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
569 }
570
571 /* Read the current osd info */
572 ivtvfb_get_osd_coords(itv, &ivtv_osd);
573
574 /* Now set the OSD to the size we want */
575 ivtv_osd.pixel_stride = var->xres_virtual;
576 ivtv_osd.lines = var->yres_virtual;
577 ivtv_osd.x = 0;
578 ivtv_osd.y = 0;
579 ivtvfb_set_osd_coords(itv, &ivtv_osd);
580
581 /* Can't seem to find the right API combo for this.
582 Use another function which does what we need through direct register access. */
583 ivtv_window.width = var->xres;
584 ivtv_window.height = var->yres;
585
586 /* Minimum margin cannot be 0, as X won't allow such a mode */
587 if (!var->upper_margin)
588 var->upper_margin++;
589 if (!var->left_margin)
590 var->left_margin++;
591 ivtv_window.top = var->upper_margin - 1;
592 ivtv_window.left = var->left_margin - 1;
593
594 ivtvfb_set_display_window(itv, &ivtv_window);
595
596 /* Pass screen size back to yuv handler */
597 itv->yuv_info.osd_full_w = ivtv_osd.pixel_stride;
598 itv->yuv_info.osd_full_h = ivtv_osd.lines;
599
600 /* Force update of yuv registers */
601 itv->yuv_info.yuv_forced_update = 1;
602
603 /* Keep a copy of these settings */
604 memcpy(&oi->fbvar_cur, var, sizeof(oi->fbvar_cur));
605
606 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
607 var->xres, var->yres,
608 var->xres_virtual, var->yres_virtual,
609 var->bits_per_pixel);
610
611 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
612 var->left_margin, var->upper_margin);
613
614 IVTVFB_DEBUG_INFO("Display filter: %s\n",
615 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
616 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
617
618 return 0;
619 }
620
621 static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix)
622 {
623 struct osd_info *oi = itv->osd_info;
624
625 IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n");
626 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
627 strscpy(fix->id, "cx23415 TV out", sizeof(fix->id));
628 fix->smem_start = oi->video_pbase;
629 fix->smem_len = oi->video_buffer_size;
630 fix->type = FB_TYPE_PACKED_PIXELS;
631 fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
632 fix->xpanstep = 1;
633 fix->ypanstep = 1;
634 fix->ywrapstep = 0;
635 fix->line_length = oi->display_byte_stride;
636 fix->accel = FB_ACCEL_NONE;
637 return 0;
638 }
639
640 /* Check the requested display mode, returning -EINVAL if we can't
641 handle it. */
642
643 static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
644 {
645 struct osd_info *oi = itv->osd_info;
646 int osd_height_limit;
647 u32 pixclock, hlimit, vlimit;
648
649 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
650
651 /* Set base references for mode calcs. */
652 if (itv->is_out_50hz) {
653 pixclock = 84316;
654 hlimit = 776;
655 vlimit = 591;
656 osd_height_limit = 576;
657 }
658 else {
659 pixclock = 83926;
660 hlimit = 776;
661 vlimit = 495;
662 osd_height_limit = 480;
663 }
664
665 if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) {
666 var->transp.offset = 24;
667 var->transp.length = 8;
668 var->red.offset = 16;
669 var->red.length = 8;
670 var->green.offset = 8;
671 var->green.length = 8;
672 var->blue.offset = 0;
673 var->blue.length = 8;
674 }
675 else if (var->bits_per_pixel == 16) {
676 /* To find out the true mode, check green length */
677 switch (var->green.length) {
678 case 4:
679 var->red.offset = 8;
680 var->red.length = 4;
681 var->green.offset = 4;
682 var->green.length = 4;
683 var->blue.offset = 0;
684 var->blue.length = 4;
685 var->transp.offset = 12;
686 var->transp.length = 1;
687 break;
688 case 5:
689 var->red.offset = 10;
690 var->red.length = 5;
691 var->green.offset = 5;
692 var->green.length = 5;
693 var->blue.offset = 0;
694 var->blue.length = 5;
695 var->transp.offset = 15;
696 var->transp.length = 1;
697 break;
698 default:
699 var->red.offset = 11;
700 var->red.length = 5;
701 var->green.offset = 5;
702 var->green.length = 6;
703 var->blue.offset = 0;
704 var->blue.length = 5;
705 var->transp.offset = 0;
706 var->transp.length = 0;
707 break;
708 }
709 }
710 else {
711 IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
712 return -EINVAL;
713 }
714
715 /* Check the resolution */
716 if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) {
717 IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n",
718 var->xres, var->yres);
719 return -EINVAL;
720 }
721
722 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
723 if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) ||
724 var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size ||
725 var->xres_virtual < var->xres ||
726 var->yres_virtual < var->yres) {
727 IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
728 var->xres_virtual, var->yres_virtual);
729 return -EINVAL;
730 }
731
732 /* Some extra checks if in 8 bit mode */
733 if (var->bits_per_pixel == 8) {
734 /* Width must be a multiple of 4 */
735 if (var->xres & 3) {
736 IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres);
737 return -EINVAL;
738 }
739 if (var->xres_virtual & 3) {
740 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual);
741 return -EINVAL;
742 }
743 }
744 else if (var->bits_per_pixel == 16) {
745 /* Width must be a multiple of 2 */
746 if (var->xres & 1) {
747 IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres);
748 return -EINVAL;
749 }
750 if (var->xres_virtual & 1) {
751 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual);
752 return -EINVAL;
753 }
754 }
755
756 /* Now check the offsets */
757 if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) {
758 IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
759 var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual);
760 return -EINVAL;
761 }
762
763 /* Check pixel format */
764 if (var->nonstd > 1) {
765 IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd);
766 return -EINVAL;
767 }
768
769 /* Check video mode */
770 if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) &&
771 ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) {
772 IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK);
773 return -EINVAL;
774 }
775
776 /* Check the left & upper margins
777 If the margins are too large, just center the screen
778 (enforcing margins causes too many problems) */
779
780 if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1)
781 var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
782
783 if (var->upper_margin + var->yres > (itv->is_out_50hz ? 577 : 481))
784 var->upper_margin = 1 + (((itv->is_out_50hz ? 576 : 480) -
785 var->yres) / 2);
786
787 /* Maintain overall 'size' for a constant refresh rate */
788 var->right_margin = hlimit - var->left_margin - var->xres;
789 var->lower_margin = vlimit - var->upper_margin - var->yres;
790
791 /* Fixed sync times */
792 var->hsync_len = 24;
793 var->vsync_len = 2;
794
795 /* Non-interlaced / interlaced mode is used to switch the OSD filter
796 on or off. Adjust the clock timings to maintain a constant
797 vertical refresh rate. */
798 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED)
799 var->pixclock = pixclock / 2;
800 else
801 var->pixclock = pixclock;
802
803 itv->osd_rect.width = var->xres;
804 itv->osd_rect.height = var->yres;
805
806 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
807 var->xres, var->yres,
808 var->xres_virtual, var->yres_virtual,
809 var->bits_per_pixel);
810
811 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
812 var->left_margin, var->upper_margin);
813
814 IVTVFB_DEBUG_INFO("Display filter: %s\n",
815 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
816 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
817 return 0;
818 }
819
820 static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
821 {
822 struct ivtv *itv = (struct ivtv *) info->par;
823 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
824 return _ivtvfb_check_var(var, itv);
825 }
826
827 static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
828 {
829 u32 osd_pan_index;
830 struct ivtv *itv = (struct ivtv *) info->par;
831
832 if (var->yoffset + info->var.yres > info->var.yres_virtual ||
833 var->xoffset + info->var.xres > info->var.xres_virtual)
834 return -EINVAL;
835
836 osd_pan_index = var->yoffset * info->fix.line_length
837 + var->xoffset * info->var.bits_per_pixel / 8;
838 write_reg(osd_pan_index, 0x02A0C);
839
840 /* Pass this info back the yuv handler */
841 itv->yuv_info.osd_x_pan = var->xoffset;
842 itv->yuv_info.osd_y_pan = var->yoffset;
843 /* Force update of yuv registers */
844 itv->yuv_info.yuv_forced_update = 1;
845 /* Remember this value */
846 itv->osd_info->pan_cur = osd_pan_index;
847 return 0;
848 }
849
850 static int ivtvfb_set_par(struct fb_info *info)
851 {
852 int rc = 0;
853 struct ivtv *itv = (struct ivtv *) info->par;
854
855 IVTVFB_DEBUG_INFO("ivtvfb_set_par\n");
856
857 rc = ivtvfb_set_var(itv, &info->var);
858 ivtvfb_pan_display(&info->var, info);
859 ivtvfb_get_fix(itv, &info->fix);
860 ivtv_firmware_check(itv, "ivtvfb_set_par");
861 return rc;
862 }
863
864 static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
865 unsigned blue, unsigned transp,
866 struct fb_info *info)
867 {
868 u32 color, *palette;
869 struct ivtv *itv = (struct ivtv *)info->par;
870
871 if (regno >= info->cmap.len)
872 return -EINVAL;
873
874 color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8);
875 if (info->var.bits_per_pixel <= 8) {
876 write_reg(regno, 0x02a30);
877 write_reg(color, 0x02a34);
878 itv->osd_info->palette_cur[regno] = color;
879 return 0;
880 }
881 if (regno >= 16)
882 return -EINVAL;
883
884 palette = info->pseudo_palette;
885 if (info->var.bits_per_pixel == 16) {
886 switch (info->var.green.length) {
887 case 4:
888 color = ((red & 0xf000) >> 4) |
889 ((green & 0xf000) >> 8) |
890 ((blue & 0xf000) >> 12);
891 break;
892 case 5:
893 color = ((red & 0xf800) >> 1) |
894 ((green & 0xf800) >> 6) |
895 ((blue & 0xf800) >> 11);
896 break;
897 case 6:
898 color = (red & 0xf800 ) |
899 ((green & 0xfc00) >> 5) |
900 ((blue & 0xf800) >> 11);
901 break;
902 }
903 }
904 palette[regno] = color;
905 return 0;
906 }
907
908 /* We don't really support blanking. All this does is enable or
909 disable the OSD. */
910 static int ivtvfb_blank(int blank_mode, struct fb_info *info)
911 {
912 struct ivtv *itv = (struct ivtv *)info->par;
913
914 IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode);
915 switch (blank_mode) {
916 case FB_BLANK_UNBLANK:
917 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
918 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
919 break;
920 case FB_BLANK_NORMAL:
921 case FB_BLANK_HSYNC_SUSPEND:
922 case FB_BLANK_VSYNC_SUSPEND:
923 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
924 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
925 break;
926 case FB_BLANK_POWERDOWN:
927 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0);
928 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
929 break;
930 }
931 itv->osd_info->blank_cur = blank_mode;
932 return 0;
933 }
934
935 static struct fb_ops ivtvfb_ops = {
936 .owner = THIS_MODULE,
937 .fb_write = ivtvfb_write,
938 .fb_check_var = ivtvfb_check_var,
939 .fb_set_par = ivtvfb_set_par,
940 .fb_setcolreg = ivtvfb_setcolreg,
941 .fb_fillrect = cfb_fillrect,
942 .fb_copyarea = cfb_copyarea,
943 .fb_imageblit = cfb_imageblit,
944 .fb_cursor = NULL,
945 .fb_ioctl = ivtvfb_ioctl,
946 .fb_pan_display = ivtvfb_pan_display,
947 .fb_blank = ivtvfb_blank,
948 };
949
950 /* Restore hardware after firmware restart */
951 static void ivtvfb_restore(struct ivtv *itv)
952 {
953 struct osd_info *oi = itv->osd_info;
954 int i;
955
956 ivtvfb_set_var(itv, &oi->fbvar_cur);
957 ivtvfb_blank(oi->blank_cur, &oi->ivtvfb_info);
958 for (i = 0; i < 256; i++) {
959 write_reg(i, 0x02a30);
960 write_reg(oi->palette_cur[i], 0x02a34);
961 }
962 write_reg(oi->pan_cur, 0x02a0c);
963 }
964
965 /* Initialization */
966
967
968 /* Setup our initial video mode */
969 static int ivtvfb_init_vidmode(struct ivtv *itv)
970 {
971 struct osd_info *oi = itv->osd_info;
972 struct v4l2_rect start_window;
973 int max_height;
974
975 /* Color mode */
976
977 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32)
978 osd_depth = 8;
979 oi->bits_per_pixel = osd_depth;
980 oi->bytes_per_pixel = oi->bits_per_pixel / 8;
981
982 /* Horizontal size & position */
983
984 if (osd_xres > 720)
985 osd_xres = 720;
986
987 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
988 if (osd_depth == 8)
989 osd_xres &= ~3;
990 else if (osd_depth == 16)
991 osd_xres &= ~1;
992
993 start_window.width = osd_xres ? osd_xres : 640;
994
995 /* Check horizontal start (osd_left). */
996 if (osd_left && osd_left + start_window.width > 721) {
997 IVTVFB_ERR("Invalid osd_left - assuming default\n");
998 osd_left = 0;
999 }
1000
1001 /* Hardware coords start at 0, user coords start at 1. */
1002 osd_left--;
1003
1004 start_window.left = osd_left >= 0 ?
1005 osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
1006
1007 oi->display_byte_stride =
1008 start_window.width * oi->bytes_per_pixel;
1009
1010 /* Vertical size & position */
1011
1012 max_height = itv->is_out_50hz ? 576 : 480;
1013
1014 if (osd_yres > max_height)
1015 osd_yres = max_height;
1016
1017 start_window.height = osd_yres ?
1018 osd_yres : itv->is_out_50hz ? 480 : 400;
1019
1020 /* Check vertical start (osd_upper). */
1021 if (osd_upper + start_window.height > max_height + 1) {
1022 IVTVFB_ERR("Invalid osd_upper - assuming default\n");
1023 osd_upper = 0;
1024 }
1025
1026 /* Hardware coords start at 0, user coords start at 1. */
1027 osd_upper--;
1028
1029 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
1030
1031 oi->display_width = start_window.width;
1032 oi->display_height = start_window.height;
1033
1034 /* Generate a valid fb_var_screeninfo */
1035
1036 oi->ivtvfb_defined.xres = oi->display_width;
1037 oi->ivtvfb_defined.yres = oi->display_height;
1038 oi->ivtvfb_defined.xres_virtual = oi->display_width;
1039 oi->ivtvfb_defined.yres_virtual = oi->display_height;
1040 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
1041 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
1042 oi->ivtvfb_defined.left_margin = start_window.left + 1;
1043 oi->ivtvfb_defined.upper_margin = start_window.top + 1;
1044 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
1045 oi->ivtvfb_defined.nonstd = 0;
1046
1047 /* We've filled in the most data, let the usual mode check
1048 routine fill in the rest. */
1049 _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
1050
1051 /* Generate valid fb_fix_screeninfo */
1052
1053 ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
1054
1055 /* Generate valid fb_info */
1056
1057 oi->ivtvfb_info.node = -1;
1058 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
1059 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1060 oi->ivtvfb_info.par = itv;
1061 oi->ivtvfb_info.var = oi->ivtvfb_defined;
1062 oi->ivtvfb_info.fix = oi->ivtvfb_fix;
1063 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
1064 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1065
1066 /* Supply some monitor specs. Bogus values will do for now */
1067 oi->ivtvfb_info.monspecs.hfmin = 8000;
1068 oi->ivtvfb_info.monspecs.hfmax = 70000;
1069 oi->ivtvfb_info.monspecs.vfmin = 10;
1070 oi->ivtvfb_info.monspecs.vfmax = 100;
1071
1072 /* Allocate color map */
1073 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
1074 IVTVFB_ERR("abort, unable to alloc cmap\n");
1075 return -ENOMEM;
1076 }
1077
1078 /* Allocate the pseudo palette */
1079 oi->ivtvfb_info.pseudo_palette =
1080 kmalloc_array(16, sizeof(u32), GFP_KERNEL|__GFP_NOWARN);
1081
1082 if (!oi->ivtvfb_info.pseudo_palette) {
1083 IVTVFB_ERR("abort, unable to alloc pseudo palette\n");
1084 return -ENOMEM;
1085 }
1086
1087 return 0;
1088 }
1089
1090 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
1091
1092 static int ivtvfb_init_io(struct ivtv *itv)
1093 {
1094 struct osd_info *oi = itv->osd_info;
1095 /* Find the largest power of two that maps the whole buffer */
1096 int size_shift = 31;
1097
1098 mutex_lock(&itv->serialize_lock);
1099 if (ivtv_init_on_first_open(itv)) {
1100 mutex_unlock(&itv->serialize_lock);
1101 IVTVFB_ERR("Failed to initialize ivtv\n");
1102 return -ENXIO;
1103 }
1104 mutex_unlock(&itv->serialize_lock);
1105
1106 if (ivtvfb_get_framebuffer(itv, &oi->video_rbase,
1107 &oi->video_buffer_size) < 0) {
1108 IVTVFB_ERR("Firmware failed to respond\n");
1109 return -EIO;
1110 }
1111
1112 /* The osd buffer size depends on the number of video buffers allocated
1113 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
1114 size to prevent any overlap. */
1115 oi->video_buffer_size = 1704960;
1116
1117 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
1118 oi->video_vbase = itv->dec_mem + oi->video_rbase;
1119
1120 if (!oi->video_vbase) {
1121 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
1122 oi->video_buffer_size, oi->video_pbase);
1123 return -EIO;
1124 }
1125
1126 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
1127 oi->video_pbase, oi->video_vbase,
1128 oi->video_buffer_size / 1024);
1129
1130 while (!(oi->video_buffer_size & (1 << size_shift)))
1131 size_shift--;
1132 size_shift++;
1133 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
1134 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
1135 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
1136 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
1137 oi->wc_cookie = arch_phys_wc_add(oi->fb_start_aligned_physaddr,
1138 oi->fb_end_aligned_physaddr -
1139 oi->fb_start_aligned_physaddr);
1140 /* Blank the entire osd. */
1141 memset_io(oi->video_vbase, 0, oi->video_buffer_size);
1142
1143 return 0;
1144 }
1145
1146 /* Release any memory we've grabbed & remove mtrr entry */
1147 static void ivtvfb_release_buffers (struct ivtv *itv)
1148 {
1149 struct osd_info *oi = itv->osd_info;
1150
1151 /* Release cmap */
1152 if (oi->ivtvfb_info.cmap.len)
1153 fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
1154
1155 /* Release pseudo palette */
1156 kfree(oi->ivtvfb_info.pseudo_palette);
1157 arch_phys_wc_del(oi->wc_cookie);
1158 kfree(oi);
1159 itv->osd_info = NULL;
1160 }
1161
1162 /* Initialize the specified card */
1163
1164 static int ivtvfb_init_card(struct ivtv *itv)
1165 {
1166 int rc;
1167
1168 #ifdef CONFIG_X86_64
1169 if (pat_enabled()) {
1170 pr_warn("ivtvfb needs PAT disabled, boot with nopat kernel parameter\n");
1171 return -ENODEV;
1172 }
1173 #endif
1174
1175 if (itv->osd_info) {
1176 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id);
1177 return -EBUSY;
1178 }
1179
1180 itv->osd_info = kzalloc(sizeof(struct osd_info),
1181 GFP_KERNEL|__GFP_NOWARN);
1182 if (itv->osd_info == NULL) {
1183 IVTVFB_ERR("Failed to allocate memory for osd_info\n");
1184 return -ENOMEM;
1185 }
1186
1187 /* Find & setup the OSD buffer */
1188 rc = ivtvfb_init_io(itv);
1189 if (rc) {
1190 ivtvfb_release_buffers(itv);
1191 return rc;
1192 }
1193
1194 /* Set the startup video mode information */
1195 if ((rc = ivtvfb_init_vidmode(itv))) {
1196 ivtvfb_release_buffers(itv);
1197 return rc;
1198 }
1199
1200 /* Register the framebuffer */
1201 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
1202 ivtvfb_release_buffers(itv);
1203 return -EINVAL;
1204 }
1205
1206 itv->osd_video_pbase = itv->osd_info->video_pbase;
1207
1208 /* Set the card to the requested mode */
1209 ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
1210
1211 /* Set color 0 to black */
1212 write_reg(0, 0x02a30);
1213 write_reg(0, 0x02a34);
1214
1215 /* Enable the osd */
1216 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
1217
1218 /* Enable restart */
1219 itv->ivtvfb_restore = ivtvfb_restore;
1220
1221 /* Allocate DMA */
1222 ivtv_udma_alloc(itv);
1223 return 0;
1224
1225 }
1226
1227 static int __init ivtvfb_callback_init(struct device *dev, void *p)
1228 {
1229 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
1230 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
1231
1232 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1233 if (ivtvfb_init_card(itv) == 0) {
1234 IVTVFB_INFO("Framebuffer registered on %s\n",
1235 itv->v4l2_dev.name);
1236 (*(int *)p)++;
1237 }
1238 }
1239 return 0;
1240 }
1241
1242 static int ivtvfb_callback_cleanup(struct device *dev, void *p)
1243 {
1244 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
1245 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
1246 struct osd_info *oi = itv->osd_info;
1247
1248 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1249 if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
1250 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n",
1251 itv->instance);
1252 return 0;
1253 }
1254 IVTVFB_INFO("Unregister framebuffer %d\n", itv->instance);
1255 itv->ivtvfb_restore = NULL;
1256 ivtvfb_blank(FB_BLANK_VSYNC_SUSPEND, &oi->ivtvfb_info);
1257 ivtvfb_release_buffers(itv);
1258 itv->osd_video_pbase = 0;
1259 }
1260 return 0;
1261 }
1262
1263 static int __init ivtvfb_init(void)
1264 {
1265 struct device_driver *drv;
1266 int registered = 0;
1267 int err;
1268
1269
1270 if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) {
1271 pr_err("ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n",
1272 IVTV_MAX_CARDS - 1);
1273 return -EINVAL;
1274 }
1275
1276 drv = driver_find("ivtv", &pci_bus_type);
1277 err = driver_for_each_device(drv, NULL, &registered, ivtvfb_callback_init);
1278 (void)err; /* suppress compiler warning */
1279 if (!registered) {
1280 pr_err("no cards found\n");
1281 return -ENODEV;
1282 }
1283 return 0;
1284 }
1285
1286 static void ivtvfb_cleanup(void)
1287 {
1288 struct device_driver *drv;
1289 int err;
1290
1291 pr_info("Unloading framebuffer module\n");
1292
1293 drv = driver_find("ivtv", &pci_bus_type);
1294 err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup);
1295 (void)err; /* suppress compiler warning */
1296 }
1297
1298 module_init(ivtvfb_init);
1299 module_exit(ivtvfb_cleanup);
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