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Merge tag 'for-linus-v3.10-rc1-2' of git://oss.sgi.com/xfs/xfs
[deliverable/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 <linux/module.h>
42 #include <linux/kernel.h>
43 #include <linux/fb.h>
44 #include <linux/ivtvfb.h>
45 #include <linux/slab.h>
46
47 #ifdef CONFIG_MTRR
48 #include <asm/mtrr.h>
49 #endif
50
51 #include "ivtv-driver.h"
52 #include "ivtv-cards.h"
53 #include "ivtv-i2c.h"
54 #include "ivtv-udma.h"
55 #include "ivtv-mailbox.h"
56 #include "ivtv-firmware.h"
57
58 /* card parameters */
59 static int ivtvfb_card_id = -1;
60 static int ivtvfb_debug = 0;
61 static bool osd_laced;
62 static int osd_depth;
63 static int osd_upper;
64 static int osd_left;
65 static int osd_yres;
66 static int osd_xres;
67
68 module_param(ivtvfb_card_id, int, 0444);
69 module_param_named(debug,ivtvfb_debug, int, 0644);
70 module_param(osd_laced, bool, 0444);
71 module_param(osd_depth, int, 0444);
72 module_param(osd_upper, int, 0444);
73 module_param(osd_left, int, 0444);
74 module_param(osd_yres, int, 0444);
75 module_param(osd_xres, int, 0444);
76
77 MODULE_PARM_DESC(ivtvfb_card_id,
78 "Only use framebuffer of the specified ivtv card (0-31)\n"
79 "\t\t\tdefault -1: initialize all available framebuffers");
80
81 MODULE_PARM_DESC(debug,
82 "Debug level (bitmask). Default: errors only\n"
83 "\t\t\t(debug = 3 gives full debugging)");
84
85 /* Why upper, left, xres, yres, depth, laced ? To match terminology used
86 by fbset.
87 Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */
88
89 MODULE_PARM_DESC(osd_laced,
90 "Interlaced mode\n"
91 "\t\t\t0=off\n"
92 "\t\t\t1=on\n"
93 "\t\t\tdefault off");
94
95 MODULE_PARM_DESC(osd_depth,
96 "Bits per pixel - 8, 16, 32\n"
97 "\t\t\tdefault 8");
98
99 MODULE_PARM_DESC(osd_upper,
100 "Vertical start position\n"
101 "\t\t\tdefault 0 (Centered)");
102
103 MODULE_PARM_DESC(osd_left,
104 "Horizontal start position\n"
105 "\t\t\tdefault 0 (Centered)");
106
107 MODULE_PARM_DESC(osd_yres,
108 "Display height\n"
109 "\t\t\tdefault 480 (PAL)\n"
110 "\t\t\t 400 (NTSC)");
111
112 MODULE_PARM_DESC(osd_xres,
113 "Display width\n"
114 "\t\t\tdefault 640");
115
116 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong");
117 MODULE_LICENSE("GPL");
118
119 /* --------------------------------------------------------------------- */
120
121 #define IVTVFB_DBGFLG_WARN (1 << 0)
122 #define IVTVFB_DBGFLG_INFO (1 << 1)
123
124 #define IVTVFB_DEBUG(x, type, fmt, args...) \
125 do { \
126 if ((x) & ivtvfb_debug) \
127 printk(KERN_INFO "ivtvfb%d " type ": " fmt, itv->instance , ## args); \
128 } while (0)
129 #define IVTVFB_DEBUG_WARN(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_WARN, "warning", fmt , ## args)
130 #define IVTVFB_DEBUG_INFO(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_INFO, "info", fmt , ## args)
131
132 /* Standard kernel messages */
133 #define IVTVFB_ERR(fmt, args...) printk(KERN_ERR "ivtvfb%d: " fmt, itv->instance , ## args)
134 #define IVTVFB_WARN(fmt, args...) printk(KERN_WARNING "ivtvfb%d: " fmt, itv->instance , ## args)
135 #define IVTVFB_INFO(fmt, args...) printk(KERN_INFO "ivtvfb%d: " fmt, itv->instance , ## args)
136
137 /* --------------------------------------------------------------------- */
138
139 #define IVTV_OSD_MAX_WIDTH 720
140 #define IVTV_OSD_MAX_HEIGHT 576
141
142 #define IVTV_OSD_BPP_8 0x00
143 #define IVTV_OSD_BPP_16_444 0x03
144 #define IVTV_OSD_BPP_16_555 0x02
145 #define IVTV_OSD_BPP_16_565 0x01
146 #define IVTV_OSD_BPP_32 0x04
147
148 struct osd_info {
149 /* Physical base address */
150 unsigned long video_pbase;
151 /* Relative base address (relative to start of decoder memory) */
152 u32 video_rbase;
153 /* Mapped base address */
154 volatile char __iomem *video_vbase;
155 /* Buffer size */
156 u32 video_buffer_size;
157
158 #ifdef CONFIG_MTRR
159 /* video_base rounded down as required by hardware MTRRs */
160 unsigned long fb_start_aligned_physaddr;
161 /* video_base rounded up as required by hardware MTRRs */
162 unsigned long fb_end_aligned_physaddr;
163 #endif
164
165 /* Store the buffer offset */
166 int set_osd_coords_x;
167 int set_osd_coords_y;
168
169 /* Current dimensions (NOT VISIBLE SIZE!) */
170 int display_width;
171 int display_height;
172 int display_byte_stride;
173
174 /* Current bits per pixel */
175 int bits_per_pixel;
176 int bytes_per_pixel;
177
178 /* Frame buffer stuff */
179 struct fb_info ivtvfb_info;
180 struct fb_var_screeninfo ivtvfb_defined;
181 struct fb_fix_screeninfo ivtvfb_fix;
182
183 /* Used for a warm start */
184 struct fb_var_screeninfo fbvar_cur;
185 int blank_cur;
186 u32 palette_cur[256];
187 u32 pan_cur;
188 };
189
190 struct ivtv_osd_coords {
191 unsigned long offset;
192 unsigned long max_offset;
193 int pixel_stride;
194 int lines;
195 int x;
196 int y;
197 };
198
199 /* --------------------------------------------------------------------- */
200
201 /* ivtv API calls for framebuffer related support */
202
203 static int ivtvfb_get_framebuffer(struct ivtv *itv, u32 *fbbase,
204 u32 *fblength)
205 {
206 u32 data[CX2341X_MBOX_MAX_DATA];
207 int rc;
208
209 ivtv_firmware_check(itv, "ivtvfb_get_framebuffer");
210 rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0);
211 *fbbase = data[0];
212 *fblength = data[1];
213 return rc;
214 }
215
216 static int ivtvfb_get_osd_coords(struct ivtv *itv,
217 struct ivtv_osd_coords *osd)
218 {
219 struct osd_info *oi = itv->osd_info;
220 u32 data[CX2341X_MBOX_MAX_DATA];
221
222 ivtv_vapi_result(itv, data, CX2341X_OSD_GET_OSD_COORDS, 0);
223
224 osd->offset = data[0] - oi->video_rbase;
225 osd->max_offset = oi->display_width * oi->display_height * 4;
226 osd->pixel_stride = data[1];
227 osd->lines = data[2];
228 osd->x = data[3];
229 osd->y = data[4];
230 return 0;
231 }
232
233 static int ivtvfb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords *osd)
234 {
235 struct osd_info *oi = itv->osd_info;
236
237 oi->display_width = osd->pixel_stride;
238 oi->display_byte_stride = osd->pixel_stride * oi->bytes_per_pixel;
239 oi->set_osd_coords_x += osd->x;
240 oi->set_osd_coords_y = osd->y;
241
242 return ivtv_vapi(itv, CX2341X_OSD_SET_OSD_COORDS, 5,
243 osd->offset + oi->video_rbase,
244 osd->pixel_stride,
245 osd->lines, osd->x, osd->y);
246 }
247
248 static int ivtvfb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window)
249 {
250 int osd_height_limit = itv->is_out_50hz ? 576 : 480;
251
252 /* Only fail if resolution too high, otherwise fudge the start coords. */
253 if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH))
254 return -EINVAL;
255
256 /* Ensure we don't exceed display limits */
257 if (ivtv_window->top + ivtv_window->height > osd_height_limit) {
258 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n",
259 ivtv_window->top, ivtv_window->height);
260 ivtv_window->top = osd_height_limit - ivtv_window->height;
261 }
262
263 if (ivtv_window->left + ivtv_window->width > IVTV_OSD_MAX_WIDTH) {
264 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n",
265 ivtv_window->left, ivtv_window->width);
266 ivtv_window->left = IVTV_OSD_MAX_WIDTH - ivtv_window->width;
267 }
268
269 /* Set the OSD origin */
270 write_reg((ivtv_window->top << 16) | ivtv_window->left, 0x02a04);
271
272 /* How much to display */
273 write_reg(((ivtv_window->top+ivtv_window->height) << 16) | (ivtv_window->left+ivtv_window->width), 0x02a08);
274
275 /* Pass this info back the yuv handler */
276 itv->yuv_info.osd_vis_w = ivtv_window->width;
277 itv->yuv_info.osd_vis_h = ivtv_window->height;
278 itv->yuv_info.osd_x_offset = ivtv_window->left;
279 itv->yuv_info.osd_y_offset = ivtv_window->top;
280
281 return 0;
282 }
283
284 static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv,
285 unsigned long ivtv_dest_addr, void __user *userbuf,
286 int size_in_bytes)
287 {
288 DEFINE_WAIT(wait);
289 int got_sig = 0;
290
291 mutex_lock(&itv->udma.lock);
292 /* Map User DMA */
293 if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
294 mutex_unlock(&itv->udma.lock);
295 IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, "
296 "Error with get_user_pages: %d bytes, %d pages returned\n",
297 size_in_bytes, itv->udma.page_count);
298
299 /* get_user_pages must have failed completely */
300 return -EIO;
301 }
302
303 IVTVFB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n",
304 size_in_bytes, itv->udma.page_count);
305
306 ivtv_udma_prepare(itv);
307 prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
308 /* if no UDMA is pending and no UDMA is in progress, then the DMA
309 is finished */
310 while (test_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags) ||
311 test_bit(IVTV_F_I_UDMA, &itv->i_flags)) {
312 /* don't interrupt if the DMA is in progress but break off
313 a still pending DMA. */
314 got_sig = signal_pending(current);
315 if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags))
316 break;
317 got_sig = 0;
318 schedule();
319 }
320 finish_wait(&itv->dma_waitq, &wait);
321
322 /* Unmap Last DMA Xfer */
323 ivtv_udma_unmap(itv);
324 mutex_unlock(&itv->udma.lock);
325 if (got_sig) {
326 IVTV_DEBUG_INFO("User stopped OSD\n");
327 return -EINTR;
328 }
329
330 return 0;
331 }
332
333 static int ivtvfb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
334 unsigned long dest_offset, int count)
335 {
336 DEFINE_WAIT(wait);
337 struct osd_info *oi = itv->osd_info;
338
339 /* Nothing to do */
340 if (count == 0) {
341 IVTVFB_DEBUG_WARN("ivtvfb_prep_frame: Nothing to do. count = 0\n");
342 return -EINVAL;
343 }
344
345 /* Check Total FB Size */
346 if ((dest_offset + count) > oi->video_buffer_size) {
347 IVTVFB_WARN("ivtvfb_prep_frame: Overflowing the framebuffer %ld, only %d available\n",
348 dest_offset + count, oi->video_buffer_size);
349 return -E2BIG;
350 }
351
352 /* Not fatal, but will have undesirable results */
353 if ((unsigned long)source & 3)
354 IVTVFB_WARN("ivtvfb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n",
355 (unsigned long)source);
356
357 if (dest_offset & 3)
358 IVTVFB_WARN("ivtvfb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset);
359
360 if (count & 3)
361 IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count);
362
363 /* Check Source */
364 if (!access_ok(VERIFY_READ, source + dest_offset, count)) {
365 IVTVFB_WARN("Invalid userspace pointer 0x%08lx\n",
366 (unsigned long)source);
367
368 IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source 0x%08lx count %d\n",
369 dest_offset, (unsigned long)source,
370 count);
371 return -EINVAL;
372 }
373
374 /* OSD Address to send DMA to */
375 dest_offset += IVTV_DECODER_OFFSET + oi->video_rbase;
376
377 /* Fill Buffers */
378 return ivtvfb_prep_dec_dma_to_device(itv, dest_offset, source, count);
379 }
380
381 static ssize_t ivtvfb_write(struct fb_info *info, const char __user *buf,
382 size_t count, loff_t *ppos)
383 {
384 unsigned long p = *ppos;
385 void *dst;
386 int err = 0;
387 int dma_err;
388 unsigned long total_size;
389 struct ivtv *itv = (struct ivtv *) info->par;
390 unsigned long dma_offset =
391 IVTV_DECODER_OFFSET + itv->osd_info->video_rbase;
392 unsigned long dma_size;
393 u16 lead = 0, tail = 0;
394
395 if (info->state != FBINFO_STATE_RUNNING)
396 return -EPERM;
397
398 total_size = info->screen_size;
399
400 if (total_size == 0)
401 total_size = info->fix.smem_len;
402
403 if (p > total_size)
404 return -EFBIG;
405
406 if (count > total_size) {
407 err = -EFBIG;
408 count = total_size;
409 }
410
411 if (count + p > total_size) {
412 if (!err)
413 err = -ENOSPC;
414 count = total_size - p;
415 }
416
417 dst = (void __force *) (info->screen_base + p);
418
419 if (info->fbops->fb_sync)
420 info->fbops->fb_sync(info);
421
422 /* If transfer size > threshold and both src/dst
423 addresses are aligned, use DMA */
424 if (count >= 4096 &&
425 ((unsigned long)buf & 3) == ((unsigned long)dst & 3)) {
426 /* Odd address = can't DMA. Align */
427 if ((unsigned long)dst & 3) {
428 lead = 4 - ((unsigned long)dst & 3);
429 if (copy_from_user(dst, buf, lead))
430 return -EFAULT;
431 buf += lead;
432 dst += lead;
433 }
434 /* DMA resolution is 32 bits */
435 if ((count - lead) & 3)
436 tail = (count - lead) & 3;
437 /* DMA the data */
438 dma_size = count - lead - tail;
439 dma_err = ivtvfb_prep_dec_dma_to_device(itv,
440 p + lead + dma_offset, (void __user *)buf, dma_size);
441 if (dma_err)
442 return dma_err;
443 dst += dma_size;
444 buf += dma_size;
445 /* Copy any leftover data */
446 if (tail && copy_from_user(dst, buf, tail))
447 return -EFAULT;
448 } else if (copy_from_user(dst, buf, count)) {
449 return -EFAULT;
450 }
451
452 if (!err)
453 *ppos += count;
454
455 return (err) ? err : count;
456 }
457
458 static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
459 {
460 DEFINE_WAIT(wait);
461 struct ivtv *itv = (struct ivtv *)info->par;
462 int rc = 0;
463
464 switch (cmd) {
465 case FBIOGET_VBLANK: {
466 struct fb_vblank vblank;
467 u32 trace;
468
469 memset(&vblank, 0, sizeof(struct fb_vblank));
470
471 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
472 FB_VBLANK_HAVE_VSYNC;
473 trace = read_reg(IVTV_REG_DEC_LINE_FIELD) >> 16;
474 if (itv->is_out_50hz && trace > 312)
475 trace -= 312;
476 else if (itv->is_out_60hz && trace > 262)
477 trace -= 262;
478 if (trace == 1)
479 vblank.flags |= FB_VBLANK_VSYNCING;
480 vblank.count = itv->last_vsync_field;
481 vblank.vcount = trace;
482 vblank.hcount = 0;
483 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
484 return -EFAULT;
485 return 0;
486 }
487
488 case FBIO_WAITFORVSYNC:
489 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
490 if (!schedule_timeout(msecs_to_jiffies(50)))
491 rc = -ETIMEDOUT;
492 finish_wait(&itv->vsync_waitq, &wait);
493 return rc;
494
495 case IVTVFB_IOC_DMA_FRAME: {
496 struct ivtvfb_dma_frame args;
497
498 IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
499 if (copy_from_user(&args, (void __user *)arg, sizeof(args)))
500 return -EFAULT;
501
502 return ivtvfb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count);
503 }
504
505 default:
506 IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd);
507 return -EINVAL;
508 }
509 return 0;
510 }
511
512 /* Framebuffer device handling */
513
514 static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
515 {
516 struct osd_info *oi = itv->osd_info;
517 struct ivtv_osd_coords ivtv_osd;
518 struct v4l2_rect ivtv_window;
519 int osd_mode = -1;
520
521 IVTVFB_DEBUG_INFO("ivtvfb_set_var\n");
522
523 /* Select color space */
524 if (var->nonstd) /* YUV */
525 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
526 else /* RGB */
527 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
528
529 /* Set the color mode */
530 switch (var->bits_per_pixel) {
531 case 8:
532 osd_mode = IVTV_OSD_BPP_8;
533 break;
534 case 32:
535 osd_mode = IVTV_OSD_BPP_32;
536 break;
537 case 16:
538 switch (var->green.length) {
539 case 4:
540 osd_mode = IVTV_OSD_BPP_16_444;
541 break;
542 case 5:
543 osd_mode = IVTV_OSD_BPP_16_555;
544 break;
545 case 6:
546 osd_mode = IVTV_OSD_BPP_16_565;
547 break;
548 default:
549 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
550 }
551 break;
552 default:
553 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
554 }
555
556 /* Set video mode. Although rare, the display can become scrambled even
557 if we don't change mode. Always 'bounce' to osd_mode via mode 0 */
558 if (osd_mode != -1) {
559 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
560 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode);
561 }
562
563 oi->bits_per_pixel = var->bits_per_pixel;
564 oi->bytes_per_pixel = var->bits_per_pixel / 8;
565
566 /* Set the flicker filter */
567 switch (var->vmode & FB_VMODE_MASK) {
568 case FB_VMODE_NONINTERLACED: /* Filter on */
569 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1);
570 break;
571 case FB_VMODE_INTERLACED: /* Filter off */
572 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0);
573 break;
574 default:
575 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
576 }
577
578 /* Read the current osd info */
579 ivtvfb_get_osd_coords(itv, &ivtv_osd);
580
581 /* Now set the OSD to the size we want */
582 ivtv_osd.pixel_stride = var->xres_virtual;
583 ivtv_osd.lines = var->yres_virtual;
584 ivtv_osd.x = 0;
585 ivtv_osd.y = 0;
586 ivtvfb_set_osd_coords(itv, &ivtv_osd);
587
588 /* Can't seem to find the right API combo for this.
589 Use another function which does what we need through direct register access. */
590 ivtv_window.width = var->xres;
591 ivtv_window.height = var->yres;
592
593 /* Minimum margin cannot be 0, as X won't allow such a mode */
594 if (!var->upper_margin)
595 var->upper_margin++;
596 if (!var->left_margin)
597 var->left_margin++;
598 ivtv_window.top = var->upper_margin - 1;
599 ivtv_window.left = var->left_margin - 1;
600
601 ivtvfb_set_display_window(itv, &ivtv_window);
602
603 /* Pass screen size back to yuv handler */
604 itv->yuv_info.osd_full_w = ivtv_osd.pixel_stride;
605 itv->yuv_info.osd_full_h = ivtv_osd.lines;
606
607 /* Force update of yuv registers */
608 itv->yuv_info.yuv_forced_update = 1;
609
610 /* Keep a copy of these settings */
611 memcpy(&oi->fbvar_cur, var, sizeof(oi->fbvar_cur));
612
613 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
614 var->xres, var->yres,
615 var->xres_virtual, var->yres_virtual,
616 var->bits_per_pixel);
617
618 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
619 var->left_margin, var->upper_margin);
620
621 IVTVFB_DEBUG_INFO("Display filter: %s\n",
622 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
623 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
624
625 return 0;
626 }
627
628 static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix)
629 {
630 struct osd_info *oi = itv->osd_info;
631
632 IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n");
633 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
634 strlcpy(fix->id, "cx23415 TV out", sizeof(fix->id));
635 fix->smem_start = oi->video_pbase;
636 fix->smem_len = oi->video_buffer_size;
637 fix->type = FB_TYPE_PACKED_PIXELS;
638 fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
639 fix->xpanstep = 1;
640 fix->ypanstep = 1;
641 fix->ywrapstep = 0;
642 fix->line_length = oi->display_byte_stride;
643 fix->accel = FB_ACCEL_NONE;
644 return 0;
645 }
646
647 /* Check the requested display mode, returning -EINVAL if we can't
648 handle it. */
649
650 static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
651 {
652 struct osd_info *oi = itv->osd_info;
653 int osd_height_limit;
654 u32 pixclock, hlimit, vlimit;
655
656 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
657
658 /* Set base references for mode calcs. */
659 if (itv->is_out_50hz) {
660 pixclock = 84316;
661 hlimit = 776;
662 vlimit = 591;
663 osd_height_limit = 576;
664 }
665 else {
666 pixclock = 83926;
667 hlimit = 776;
668 vlimit = 495;
669 osd_height_limit = 480;
670 }
671
672 if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) {
673 var->transp.offset = 24;
674 var->transp.length = 8;
675 var->red.offset = 16;
676 var->red.length = 8;
677 var->green.offset = 8;
678 var->green.length = 8;
679 var->blue.offset = 0;
680 var->blue.length = 8;
681 }
682 else if (var->bits_per_pixel == 16) {
683 /* To find out the true mode, check green length */
684 switch (var->green.length) {
685 case 4:
686 var->red.offset = 8;
687 var->red.length = 4;
688 var->green.offset = 4;
689 var->green.length = 4;
690 var->blue.offset = 0;
691 var->blue.length = 4;
692 var->transp.offset = 12;
693 var->transp.length = 1;
694 break;
695 case 5:
696 var->red.offset = 10;
697 var->red.length = 5;
698 var->green.offset = 5;
699 var->green.length = 5;
700 var->blue.offset = 0;
701 var->blue.length = 5;
702 var->transp.offset = 15;
703 var->transp.length = 1;
704 break;
705 default:
706 var->red.offset = 11;
707 var->red.length = 5;
708 var->green.offset = 5;
709 var->green.length = 6;
710 var->blue.offset = 0;
711 var->blue.length = 5;
712 var->transp.offset = 0;
713 var->transp.length = 0;
714 break;
715 }
716 }
717 else {
718 IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
719 return -EINVAL;
720 }
721
722 /* Check the resolution */
723 if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) {
724 IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n",
725 var->xres, var->yres);
726 return -EINVAL;
727 }
728
729 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
730 if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) ||
731 var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size ||
732 var->xres_virtual < var->xres ||
733 var->yres_virtual < var->yres) {
734 IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
735 var->xres_virtual, var->yres_virtual);
736 return -EINVAL;
737 }
738
739 /* Some extra checks if in 8 bit mode */
740 if (var->bits_per_pixel == 8) {
741 /* Width must be a multiple of 4 */
742 if (var->xres & 3) {
743 IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres);
744 return -EINVAL;
745 }
746 if (var->xres_virtual & 3) {
747 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual);
748 return -EINVAL;
749 }
750 }
751 else if (var->bits_per_pixel == 16) {
752 /* Width must be a multiple of 2 */
753 if (var->xres & 1) {
754 IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres);
755 return -EINVAL;
756 }
757 if (var->xres_virtual & 1) {
758 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual);
759 return -EINVAL;
760 }
761 }
762
763 /* Now check the offsets */
764 if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) {
765 IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
766 var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual);
767 return -EINVAL;
768 }
769
770 /* Check pixel format */
771 if (var->nonstd > 1) {
772 IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd);
773 return -EINVAL;
774 }
775
776 /* Check video mode */
777 if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) &&
778 ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) {
779 IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK);
780 return -EINVAL;
781 }
782
783 /* Check the left & upper margins
784 If the margins are too large, just center the screen
785 (enforcing margins causes too many problems) */
786
787 if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1)
788 var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
789
790 if (var->upper_margin + var->yres > (itv->is_out_50hz ? 577 : 481))
791 var->upper_margin = 1 + (((itv->is_out_50hz ? 576 : 480) -
792 var->yres) / 2);
793
794 /* Maintain overall 'size' for a constant refresh rate */
795 var->right_margin = hlimit - var->left_margin - var->xres;
796 var->lower_margin = vlimit - var->upper_margin - var->yres;
797
798 /* Fixed sync times */
799 var->hsync_len = 24;
800 var->vsync_len = 2;
801
802 /* Non-interlaced / interlaced mode is used to switch the OSD filter
803 on or off. Adjust the clock timings to maintain a constant
804 vertical refresh rate. */
805 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED)
806 var->pixclock = pixclock / 2;
807 else
808 var->pixclock = pixclock;
809
810 itv->osd_rect.width = var->xres;
811 itv->osd_rect.height = var->yres;
812
813 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
814 var->xres, var->yres,
815 var->xres_virtual, var->yres_virtual,
816 var->bits_per_pixel);
817
818 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
819 var->left_margin, var->upper_margin);
820
821 IVTVFB_DEBUG_INFO("Display filter: %s\n",
822 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
823 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
824 return 0;
825 }
826
827 static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
828 {
829 struct ivtv *itv = (struct ivtv *) info->par;
830 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
831 return _ivtvfb_check_var(var, itv);
832 }
833
834 static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
835 {
836 u32 osd_pan_index;
837 struct ivtv *itv = (struct ivtv *) info->par;
838
839 if (var->yoffset + info->var.yres > info->var.yres_virtual ||
840 var->xoffset + info->var.xres > info->var.xres_virtual)
841 return -EINVAL;
842
843 osd_pan_index = var->yoffset * info->fix.line_length
844 + var->xoffset * info->var.bits_per_pixel / 8;
845 write_reg(osd_pan_index, 0x02A0C);
846
847 /* Pass this info back the yuv handler */
848 itv->yuv_info.osd_x_pan = var->xoffset;
849 itv->yuv_info.osd_y_pan = var->yoffset;
850 /* Force update of yuv registers */
851 itv->yuv_info.yuv_forced_update = 1;
852 /* Remember this value */
853 itv->osd_info->pan_cur = osd_pan_index;
854 return 0;
855 }
856
857 static int ivtvfb_set_par(struct fb_info *info)
858 {
859 int rc = 0;
860 struct ivtv *itv = (struct ivtv *) info->par;
861
862 IVTVFB_DEBUG_INFO("ivtvfb_set_par\n");
863
864 rc = ivtvfb_set_var(itv, &info->var);
865 ivtvfb_pan_display(&info->var, info);
866 ivtvfb_get_fix(itv, &info->fix);
867 ivtv_firmware_check(itv, "ivtvfb_set_par");
868 return rc;
869 }
870
871 static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
872 unsigned blue, unsigned transp,
873 struct fb_info *info)
874 {
875 u32 color, *palette;
876 struct ivtv *itv = (struct ivtv *)info->par;
877
878 if (regno >= info->cmap.len)
879 return -EINVAL;
880
881 color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8);
882 if (info->var.bits_per_pixel <= 8) {
883 write_reg(regno, 0x02a30);
884 write_reg(color, 0x02a34);
885 itv->osd_info->palette_cur[regno] = color;
886 return 0;
887 }
888 if (regno >= 16)
889 return -EINVAL;
890
891 palette = info->pseudo_palette;
892 if (info->var.bits_per_pixel == 16) {
893 switch (info->var.green.length) {
894 case 4:
895 color = ((red & 0xf000) >> 4) |
896 ((green & 0xf000) >> 8) |
897 ((blue & 0xf000) >> 12);
898 break;
899 case 5:
900 color = ((red & 0xf800) >> 1) |
901 ((green & 0xf800) >> 6) |
902 ((blue & 0xf800) >> 11);
903 break;
904 case 6:
905 color = (red & 0xf800 ) |
906 ((green & 0xfc00) >> 5) |
907 ((blue & 0xf800) >> 11);
908 break;
909 }
910 }
911 palette[regno] = color;
912 return 0;
913 }
914
915 /* We don't really support blanking. All this does is enable or
916 disable the OSD. */
917 static int ivtvfb_blank(int blank_mode, struct fb_info *info)
918 {
919 struct ivtv *itv = (struct ivtv *)info->par;
920
921 IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode);
922 switch (blank_mode) {
923 case FB_BLANK_UNBLANK:
924 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
925 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
926 break;
927 case FB_BLANK_NORMAL:
928 case FB_BLANK_HSYNC_SUSPEND:
929 case FB_BLANK_VSYNC_SUSPEND:
930 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
931 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
932 break;
933 case FB_BLANK_POWERDOWN:
934 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0);
935 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
936 break;
937 }
938 itv->osd_info->blank_cur = blank_mode;
939 return 0;
940 }
941
942 static struct fb_ops ivtvfb_ops = {
943 .owner = THIS_MODULE,
944 .fb_write = ivtvfb_write,
945 .fb_check_var = ivtvfb_check_var,
946 .fb_set_par = ivtvfb_set_par,
947 .fb_setcolreg = ivtvfb_setcolreg,
948 .fb_fillrect = cfb_fillrect,
949 .fb_copyarea = cfb_copyarea,
950 .fb_imageblit = cfb_imageblit,
951 .fb_cursor = NULL,
952 .fb_ioctl = ivtvfb_ioctl,
953 .fb_pan_display = ivtvfb_pan_display,
954 .fb_blank = ivtvfb_blank,
955 };
956
957 /* Restore hardware after firmware restart */
958 static void ivtvfb_restore(struct ivtv *itv)
959 {
960 struct osd_info *oi = itv->osd_info;
961 int i;
962
963 ivtvfb_set_var(itv, &oi->fbvar_cur);
964 ivtvfb_blank(oi->blank_cur, &oi->ivtvfb_info);
965 for (i = 0; i < 256; i++) {
966 write_reg(i, 0x02a30);
967 write_reg(oi->palette_cur[i], 0x02a34);
968 }
969 write_reg(oi->pan_cur, 0x02a0c);
970 }
971
972 /* Initialization */
973
974
975 /* Setup our initial video mode */
976 static int ivtvfb_init_vidmode(struct ivtv *itv)
977 {
978 struct osd_info *oi = itv->osd_info;
979 struct v4l2_rect start_window;
980 int max_height;
981
982 /* Color mode */
983
984 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32)
985 osd_depth = 8;
986 oi->bits_per_pixel = osd_depth;
987 oi->bytes_per_pixel = oi->bits_per_pixel / 8;
988
989 /* Horizontal size & position */
990
991 if (osd_xres > 720)
992 osd_xres = 720;
993
994 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
995 if (osd_depth == 8)
996 osd_xres &= ~3;
997 else if (osd_depth == 16)
998 osd_xres &= ~1;
999
1000 start_window.width = osd_xres ? osd_xres : 640;
1001
1002 /* Check horizontal start (osd_left). */
1003 if (osd_left && osd_left + start_window.width > 721) {
1004 IVTVFB_ERR("Invalid osd_left - assuming default\n");
1005 osd_left = 0;
1006 }
1007
1008 /* Hardware coords start at 0, user coords start at 1. */
1009 osd_left--;
1010
1011 start_window.left = osd_left >= 0 ?
1012 osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
1013
1014 oi->display_byte_stride =
1015 start_window.width * oi->bytes_per_pixel;
1016
1017 /* Vertical size & position */
1018
1019 max_height = itv->is_out_50hz ? 576 : 480;
1020
1021 if (osd_yres > max_height)
1022 osd_yres = max_height;
1023
1024 start_window.height = osd_yres ?
1025 osd_yres : itv->is_out_50hz ? 480 : 400;
1026
1027 /* Check vertical start (osd_upper). */
1028 if (osd_upper + start_window.height > max_height + 1) {
1029 IVTVFB_ERR("Invalid osd_upper - assuming default\n");
1030 osd_upper = 0;
1031 }
1032
1033 /* Hardware coords start at 0, user coords start at 1. */
1034 osd_upper--;
1035
1036 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
1037
1038 oi->display_width = start_window.width;
1039 oi->display_height = start_window.height;
1040
1041 /* Generate a valid fb_var_screeninfo */
1042
1043 oi->ivtvfb_defined.xres = oi->display_width;
1044 oi->ivtvfb_defined.yres = oi->display_height;
1045 oi->ivtvfb_defined.xres_virtual = oi->display_width;
1046 oi->ivtvfb_defined.yres_virtual = oi->display_height;
1047 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
1048 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
1049 oi->ivtvfb_defined.left_margin = start_window.left + 1;
1050 oi->ivtvfb_defined.upper_margin = start_window.top + 1;
1051 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
1052 oi->ivtvfb_defined.nonstd = 0;
1053
1054 /* We've filled in the most data, let the usual mode check
1055 routine fill in the rest. */
1056 _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
1057
1058 /* Generate valid fb_fix_screeninfo */
1059
1060 ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
1061
1062 /* Generate valid fb_info */
1063
1064 oi->ivtvfb_info.node = -1;
1065 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
1066 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1067 oi->ivtvfb_info.par = itv;
1068 oi->ivtvfb_info.var = oi->ivtvfb_defined;
1069 oi->ivtvfb_info.fix = oi->ivtvfb_fix;
1070 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
1071 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1072
1073 /* Supply some monitor specs. Bogus values will do for now */
1074 oi->ivtvfb_info.monspecs.hfmin = 8000;
1075 oi->ivtvfb_info.monspecs.hfmax = 70000;
1076 oi->ivtvfb_info.monspecs.vfmin = 10;
1077 oi->ivtvfb_info.monspecs.vfmax = 100;
1078
1079 /* Allocate color map */
1080 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
1081 IVTVFB_ERR("abort, unable to alloc cmap\n");
1082 return -ENOMEM;
1083 }
1084
1085 /* Allocate the pseudo palette */
1086 oi->ivtvfb_info.pseudo_palette =
1087 kmalloc(sizeof(u32) * 16, GFP_KERNEL|__GFP_NOWARN);
1088
1089 if (!oi->ivtvfb_info.pseudo_palette) {
1090 IVTVFB_ERR("abort, unable to alloc pseudo palette\n");
1091 return -ENOMEM;
1092 }
1093
1094 return 0;
1095 }
1096
1097 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
1098
1099 static int ivtvfb_init_io(struct ivtv *itv)
1100 {
1101 struct osd_info *oi = itv->osd_info;
1102
1103 mutex_lock(&itv->serialize_lock);
1104 if (ivtv_init_on_first_open(itv)) {
1105 mutex_unlock(&itv->serialize_lock);
1106 IVTVFB_ERR("Failed to initialize ivtv\n");
1107 return -ENXIO;
1108 }
1109 mutex_unlock(&itv->serialize_lock);
1110
1111 if (ivtvfb_get_framebuffer(itv, &oi->video_rbase,
1112 &oi->video_buffer_size) < 0) {
1113 IVTVFB_ERR("Firmware failed to respond\n");
1114 return -EIO;
1115 }
1116
1117 /* The osd buffer size depends on the number of video buffers allocated
1118 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
1119 size to prevent any overlap. */
1120 oi->video_buffer_size = 1704960;
1121
1122 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
1123 oi->video_vbase = itv->dec_mem + oi->video_rbase;
1124
1125 if (!oi->video_vbase) {
1126 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
1127 oi->video_buffer_size, oi->video_pbase);
1128 return -EIO;
1129 }
1130
1131 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
1132 oi->video_pbase, oi->video_vbase,
1133 oi->video_buffer_size / 1024);
1134
1135 #ifdef CONFIG_MTRR
1136 {
1137 /* Find the largest power of two that maps the whole buffer */
1138 int size_shift = 31;
1139
1140 while (!(oi->video_buffer_size & (1 << size_shift))) {
1141 size_shift--;
1142 }
1143 size_shift++;
1144 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
1145 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
1146 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
1147 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
1148 if (mtrr_add(oi->fb_start_aligned_physaddr,
1149 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr,
1150 MTRR_TYPE_WRCOMB, 1) < 0) {
1151 IVTVFB_INFO("disabled mttr\n");
1152 oi->fb_start_aligned_physaddr = 0;
1153 oi->fb_end_aligned_physaddr = 0;
1154 }
1155 }
1156 #endif
1157
1158 /* Blank the entire osd. */
1159 memset_io(oi->video_vbase, 0, oi->video_buffer_size);
1160
1161 return 0;
1162 }
1163
1164 /* Release any memory we've grabbed & remove mtrr entry */
1165 static void ivtvfb_release_buffers (struct ivtv *itv)
1166 {
1167 struct osd_info *oi = itv->osd_info;
1168
1169 /* Release cmap */
1170 if (oi->ivtvfb_info.cmap.len)
1171 fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
1172
1173 /* Release pseudo palette */
1174 kfree(oi->ivtvfb_info.pseudo_palette);
1175
1176 #ifdef CONFIG_MTRR
1177 if (oi->fb_end_aligned_physaddr) {
1178 mtrr_del(-1, oi->fb_start_aligned_physaddr,
1179 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr);
1180 }
1181 #endif
1182
1183 kfree(oi);
1184 itv->osd_info = NULL;
1185 }
1186
1187 /* Initialize the specified card */
1188
1189 static int ivtvfb_init_card(struct ivtv *itv)
1190 {
1191 int rc;
1192
1193 if (itv->osd_info) {
1194 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id);
1195 return -EBUSY;
1196 }
1197
1198 itv->osd_info = kzalloc(sizeof(struct osd_info),
1199 GFP_ATOMIC|__GFP_NOWARN);
1200 if (itv->osd_info == NULL) {
1201 IVTVFB_ERR("Failed to allocate memory for osd_info\n");
1202 return -ENOMEM;
1203 }
1204
1205 /* Find & setup the OSD buffer */
1206 rc = ivtvfb_init_io(itv);
1207 if (rc) {
1208 ivtvfb_release_buffers(itv);
1209 return rc;
1210 }
1211
1212 /* Set the startup video mode information */
1213 if ((rc = ivtvfb_init_vidmode(itv))) {
1214 ivtvfb_release_buffers(itv);
1215 return rc;
1216 }
1217
1218 /* Register the framebuffer */
1219 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
1220 ivtvfb_release_buffers(itv);
1221 return -EINVAL;
1222 }
1223
1224 itv->osd_video_pbase = itv->osd_info->video_pbase;
1225
1226 /* Set the card to the requested mode */
1227 ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
1228
1229 /* Set color 0 to black */
1230 write_reg(0, 0x02a30);
1231 write_reg(0, 0x02a34);
1232
1233 /* Enable the osd */
1234 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
1235
1236 /* Enable restart */
1237 itv->ivtvfb_restore = ivtvfb_restore;
1238
1239 /* Allocate DMA */
1240 ivtv_udma_alloc(itv);
1241 return 0;
1242
1243 }
1244
1245 static int __init ivtvfb_callback_init(struct device *dev, void *p)
1246 {
1247 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
1248 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
1249
1250 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1251 if (ivtvfb_init_card(itv) == 0) {
1252 IVTVFB_INFO("Framebuffer registered on %s\n",
1253 itv->v4l2_dev.name);
1254 (*(int *)p)++;
1255 }
1256 }
1257 return 0;
1258 }
1259
1260 static int ivtvfb_callback_cleanup(struct device *dev, void *p)
1261 {
1262 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
1263 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
1264 struct osd_info *oi = itv->osd_info;
1265
1266 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1267 if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
1268 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n",
1269 itv->instance);
1270 return 0;
1271 }
1272 IVTVFB_INFO("Unregister framebuffer %d\n", itv->instance);
1273 itv->ivtvfb_restore = NULL;
1274 ivtvfb_blank(FB_BLANK_VSYNC_SUSPEND, &oi->ivtvfb_info);
1275 ivtvfb_release_buffers(itv);
1276 itv->osd_video_pbase = 0;
1277 }
1278 return 0;
1279 }
1280
1281 static int __init ivtvfb_init(void)
1282 {
1283 struct device_driver *drv;
1284 int registered = 0;
1285 int err;
1286
1287 if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) {
1288 printk(KERN_ERR "ivtvfb: ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n",
1289 IVTV_MAX_CARDS - 1);
1290 return -EINVAL;
1291 }
1292
1293 drv = driver_find("ivtv", &pci_bus_type);
1294 err = driver_for_each_device(drv, NULL, &registered, ivtvfb_callback_init);
1295 (void)err; /* suppress compiler warning */
1296 if (!registered) {
1297 printk(KERN_ERR "ivtvfb: no cards found\n");
1298 return -ENODEV;
1299 }
1300 return 0;
1301 }
1302
1303 static void ivtvfb_cleanup(void)
1304 {
1305 struct device_driver *drv;
1306 int err;
1307
1308 printk(KERN_INFO "ivtvfb: Unloading framebuffer module\n");
1309
1310 drv = driver_find("ivtv", &pci_bus_type);
1311 err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup);
1312 (void)err; /* suppress compiler warning */
1313 }
1314
1315 module_init(ivtvfb_init);
1316 module_exit(ivtvfb_cleanup);
Linux kernel - Deliverables
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