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V4L/DVB (6119): ivtvfb: renamed ivtv-fb to ivtvfb, move header to include/linux
[deliverable/linux.git] / drivers / media / video / 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
46 #ifdef CONFIG_MTRR
47 #include <asm/mtrr.h>
48 #endif
49
50 #include "ivtv-driver.h"
51 #include "ivtv-udma.h"
52 #include "ivtv-mailbox.h"
53
54 /* card parameters */
55 static int ivtv_fb_card_id = -1;
56 static int ivtv_fb_debug = 0;
57 static int osd_laced;
58 static int osd_compat;
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(ivtv_fb_card_id, int, 0444);
66 module_param_named(debug,ivtv_fb_debug, int, 0644);
67 module_param(osd_laced, bool, 0444);
68 module_param(osd_compat, bool, 0444);
69 module_param(osd_depth, int, 0444);
70 module_param(osd_upper, int, 0444);
71 module_param(osd_left, int, 0444);
72 module_param(osd_yres, int, 0444);
73 module_param(osd_xres, int, 0444);
74
75 MODULE_PARM_DESC(ivtv_fb_card_id,
76 "Only use framebuffer of the specified ivtv card (0-31)\n"
77 "\t\t\tdefault -1: initialize all available framebuffers");
78
79 MODULE_PARM_DESC(debug,
80 "Debug level (bitmask). Default: errors only\n"
81 "\t\t\t(debug = 3 gives full debugging)");
82
83 MODULE_PARM_DESC(osd_compat,
84 "Compatibility mode - Display size is locked (use for old X drivers)\n"
85 "\t\t\t0=off\n"
86 "\t\t\t1=on\n"
87 "\t\t\tdefault off");
88
89 /* Why upper, left, xres, yres, depth, laced ? To match terminology used
90 by fbset.
91 Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */
92
93 MODULE_PARM_DESC(osd_laced,
94 "Interlaced mode\n"
95 "\t\t\t0=off\n"
96 "\t\t\t1=on\n"
97 "\t\t\tdefault off");
98
99 MODULE_PARM_DESC(osd_depth,
100 "Bits per pixel - 8, 16, 32\n"
101 "\t\t\tdefault 8");
102
103 MODULE_PARM_DESC(osd_upper,
104 "Vertical start position\n"
105 "\t\t\tdefault 0 (Centered)");
106
107 MODULE_PARM_DESC(osd_left,
108 "Horizontal start position\n"
109 "\t\t\tdefault 0 (Centered)");
110
111 MODULE_PARM_DESC(osd_yres,
112 "Display height\n"
113 "\t\t\tdefault 480 (PAL)\n"
114 "\t\t\t 400 (NTSC)");
115
116 MODULE_PARM_DESC(osd_xres,
117 "Display width\n"
118 "\t\t\tdefault 640");
119
120 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong");
121 MODULE_LICENSE("GPL");
122
123 /* --------------------------------------------------------------------- */
124
125 #define IVTV_FB_DBGFLG_WARN (1 << 0)
126 #define IVTV_FB_DBGFLG_INFO (1 << 1)
127
128 #define IVTV_FB_DEBUG(x, type, fmt, args...) \
129 do { \
130 if ((x) & ivtv_fb_debug) \
131 printk(KERN_INFO "ivtv-fb%d " type ": " fmt, itv->num , ## args); \
132 } while (0)
133 #define IVTV_FB_DEBUG_WARN(fmt, args...) IVTV_FB_DEBUG(IVTV_FB_DBGFLG_WARN, "warning", fmt , ## args)
134 #define IVTV_FB_DEBUG_INFO(fmt, args...) IVTV_FB_DEBUG(IVTV_FB_DBGFLG_INFO, "info", fmt , ## args)
135
136 /* Standard kernel messages */
137 #define IVTV_FB_ERR(fmt, args...) printk(KERN_ERR "ivtv-fb%d: " fmt, itv->num , ## args)
138 #define IVTV_FB_WARN(fmt, args...) printk(KERN_WARNING "ivtv-fb%d: " fmt, itv->num , ## args)
139 #define IVTV_FB_INFO(fmt, args...) printk(KERN_INFO "ivtv-fb%d: " fmt, itv->num , ## args)
140
141 /* --------------------------------------------------------------------- */
142
143 #define IVTV_OSD_MAX_WIDTH 720
144 #define IVTV_OSD_MAX_HEIGHT 576
145
146 #define IVTV_OSD_BPP_8 0x00
147 #define IVTV_OSD_BPP_16_444 0x03
148 #define IVTV_OSD_BPP_16_555 0x02
149 #define IVTV_OSD_BPP_16_565 0x01
150 #define IVTV_OSD_BPP_32 0x04
151
152 struct osd_info {
153 /* Physical base address */
154 unsigned long video_pbase;
155 /* Relative base address (relative to start of decoder memory) */
156 u32 video_rbase;
157 /* Mapped base address */
158 volatile char __iomem *video_vbase;
159 /* Buffer size */
160 u32 video_buffer_size;
161
162 #ifdef CONFIG_MTRR
163 /* video_base rounded down as required by hardware MTRRs */
164 unsigned long fb_start_aligned_physaddr;
165 /* video_base rounded up as required by hardware MTRRs */
166 unsigned long fb_end_aligned_physaddr;
167 #endif
168
169 /* Current osd mode */
170 int osd_mode;
171
172 /* Store the buffer offset */
173 int set_osd_coords_x;
174 int set_osd_coords_y;
175
176 /* Current dimensions (NOT VISIBLE SIZE!) */
177 int display_width;
178 int display_height;
179 int display_byte_stride;
180
181 /* Current bits per pixel */
182 int bits_per_pixel;
183 int bytes_per_pixel;
184
185 /* Frame buffer stuff */
186 struct fb_info ivtvfb_info;
187 struct fb_var_screeninfo ivtvfb_defined;
188 struct fb_fix_screeninfo ivtvfb_fix;
189 };
190
191 struct ivtv_osd_coords {
192 unsigned long offset;
193 unsigned long max_offset;
194 int pixel_stride;
195 int lines;
196 int x;
197 int y;
198 };
199
200 /* --------------------------------------------------------------------- */
201
202 /* ivtv API calls for framebuffer related support */
203
204 static int ivtv_fb_get_framebuffer(struct ivtv *itv, u32 *fbbase,
205 u32 *fblength)
206 {
207 u32 data[CX2341X_MBOX_MAX_DATA];
208 int rc;
209
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 ivtv_fb_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 ivtv_fb_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 ivtv_fb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window)
249 {
250 int osd_height_limit = itv->is_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 IVTV_FB_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 IVTV_FB_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 ivtv_fb_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 ret = 0;
290 int got_sig = 0;
291
292 mutex_lock(&itv->udma.lock);
293 /* Map User DMA */
294 if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
295 mutex_unlock(&itv->udma.lock);
296 IVTV_FB_WARN("ivtvfb_prep_dec_dma_to_device, "
297 "Error with get_user_pages: %d bytes, %d pages returned\n",
298 size_in_bytes, itv->udma.page_count);
299
300 /* get_user_pages must have failed completely */
301 return -EIO;
302 }
303
304 IVTV_FB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n",
305 size_in_bytes, itv->udma.page_count);
306
307 ivtv_udma_prepare(itv);
308 prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
309 /* if no UDMA is pending and no UDMA is in progress, then the DMA
310 is finished */
311 while (itv->i_flags & (IVTV_F_I_UDMA_PENDING | IVTV_F_I_UDMA)) {
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 ret;
331 }
332
333 static int ivtv_fb_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 IVTV_FB_DEBUG_WARN("ivtv_fb_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 IVTV_FB_WARN("ivtv_fb_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 IVTV_FB_WARN("ivtv_fb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n",
355 (unsigned long)source);
356
357 if (dest_offset & 3)
358 IVTV_FB_WARN("ivtv_fb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset);
359
360 if (count & 3)
361 IVTV_FB_WARN("ivtv_fb_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 IVTV_FB_WARN("Invalid userspace pointer 0x%08lx\n",
366 (unsigned long)source);
367
368 IVTV_FB_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 ivtv_fb_prep_dec_dma_to_device(itv, dest_offset, source, count);
379 }
380
381 static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
382 {
383 DEFINE_WAIT(wait);
384 struct ivtv *itv = (struct ivtv *)info->par;
385 int rc = 0;
386
387 switch (cmd) {
388 case FBIOGET_VBLANK: {
389 struct fb_vblank vblank;
390 u32 trace;
391
392 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
393 FB_VBLANK_HAVE_VSYNC;
394 trace = read_reg(0x028c0) >> 16;
395 if (itv->is_50hz && trace > 312) trace -= 312;
396 else if (itv->is_60hz && trace > 262) trace -= 262;
397 if (trace == 1) vblank.flags |= FB_VBLANK_VSYNCING;
398 vblank.count = itv->last_vsync_field;
399 vblank.vcount = trace;
400 vblank.hcount = 0;
401 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
402 return -EFAULT;
403 return 0;
404 }
405
406 case FBIO_WAITFORVSYNC:
407 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
408 if (!schedule_timeout(msecs_to_jiffies(50))) rc = -ETIMEDOUT;
409 finish_wait(&itv->vsync_waitq, &wait);
410 return rc;
411
412 case IVTVFB_IOC_DMA_FRAME: {
413 struct ivtvfb_dma_frame args;
414
415 IVTV_FB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
416 if (copy_from_user(&args, (void __user *)arg, sizeof(args)))
417 return -EFAULT;
418
419 return ivtv_fb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count);
420 }
421
422 default:
423 IVTV_FB_DEBUG_INFO("Unknown ioctl %08x\n", cmd);
424 return -EINVAL;
425 }
426 return 0;
427 }
428
429 /* Framebuffer device handling */
430
431 static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
432 {
433 struct osd_info *oi = itv->osd_info;
434 struct ivtv_osd_coords ivtv_osd;
435 struct v4l2_rect ivtv_window;
436 int osd_mode = -1;
437
438 IVTV_FB_DEBUG_INFO("ivtvfb_set_var\n");
439
440 /* Select color space */
441 if (var->nonstd) /* YUV */
442 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
443 else /* RGB */
444 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
445
446 /* Set the color mode */
447 switch (var->bits_per_pixel) {
448 case 8:
449 osd_mode = IVTV_OSD_BPP_8;
450 break;
451 case 32:
452 osd_mode = IVTV_OSD_BPP_32;
453 break;
454 case 16:
455 switch (var->green.length) {
456 case 4:
457 osd_mode = IVTV_OSD_BPP_16_444;
458 break;
459 case 5:
460 osd_mode = IVTV_OSD_BPP_16_555;
461 break;
462 case 6:
463 osd_mode = IVTV_OSD_BPP_16_565;
464 break;
465 default:
466 IVTV_FB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
467 }
468 break;
469 default:
470 IVTV_FB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
471 }
472
473 /* Change osd mode if needed.
474 Although rare, things can go wrong. The extra mode
475 change seems to help... */
476 if (osd_mode != -1 && osd_mode != oi->osd_mode) {
477 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
478 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode);
479 oi->osd_mode = osd_mode;
480 }
481
482 oi->bits_per_pixel = var->bits_per_pixel;
483 oi->bytes_per_pixel = var->bits_per_pixel / 8;
484
485 /* Set the flicker filter */
486 switch (var->vmode & FB_VMODE_MASK) {
487 case FB_VMODE_NONINTERLACED: /* Filter on */
488 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1);
489 break;
490 case FB_VMODE_INTERLACED: /* Filter off */
491 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0);
492 break;
493 default:
494 IVTV_FB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
495 }
496
497 /* Read the current osd info */
498 ivtv_fb_get_osd_coords(itv, &ivtv_osd);
499
500 /* Now set the OSD to the size we want */
501 ivtv_osd.pixel_stride = var->xres_virtual;
502 ivtv_osd.lines = var->yres_virtual;
503 ivtv_osd.x = 0;
504 ivtv_osd.y = 0;
505 ivtv_fb_set_osd_coords(itv, &ivtv_osd);
506
507 /* Can't seem to find the right API combo for this.
508 Use another function which does what we need through direct register access. */
509 ivtv_window.width = var->xres;
510 ivtv_window.height = var->yres;
511
512 /* Minimum margin cannot be 0, as X won't allow such a mode */
513 if (!var->upper_margin) var->upper_margin++;
514 if (!var->left_margin) var->left_margin++;
515 ivtv_window.top = var->upper_margin - 1;
516 ivtv_window.left = var->left_margin - 1;
517
518 ivtv_fb_set_display_window(itv, &ivtv_window);
519
520 /* Force update of yuv registers */
521 itv->yuv_info.yuv_forced_update = 1;
522
523 IVTV_FB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
524 var->xres, var->yres,
525 var->xres_virtual, var->yres_virtual,
526 var->bits_per_pixel);
527
528 IVTV_FB_DEBUG_INFO("Display position: %d, %d\n",
529 var->left_margin, var->upper_margin);
530
531 IVTV_FB_DEBUG_INFO("Display filter: %s\n",
532 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
533 IVTV_FB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
534
535 return 0;
536 }
537
538 static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix)
539 {
540 struct osd_info *oi = itv->osd_info;
541
542 IVTV_FB_DEBUG_INFO("ivtvfb_get_fix\n");
543 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
544 strcpy(fix->id, "cx23415 TV out");
545 fix->smem_start = oi->video_pbase;
546 fix->smem_len = oi->video_buffer_size;
547 fix->type = FB_TYPE_PACKED_PIXELS;
548 fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
549 fix->xpanstep = 1;
550 fix->ypanstep = 1;
551 fix->ywrapstep = 0;
552 fix->line_length = oi->display_byte_stride;
553 fix->accel = FB_ACCEL_NONE;
554 return 0;
555 }
556
557 /* Check the requested display mode, returning -EINVAL if we can't
558 handle it. */
559
560 static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
561 {
562 struct osd_info *oi = itv->osd_info;
563 int osd_height_limit;
564 u32 pixclock, hlimit, vlimit;
565
566 IVTV_FB_DEBUG_INFO("ivtvfb_check_var\n");
567
568 /* Set base references for mode calcs. */
569 if (itv->is_50hz) {
570 pixclock = 84316;
571 hlimit = 776;
572 vlimit = 591;
573 osd_height_limit = 576;
574 }
575 else {
576 pixclock = 83926;
577 hlimit = 776;
578 vlimit = 495;
579 osd_height_limit = 480;
580 }
581
582 /* Check the bits per pixel */
583 if (osd_compat) {
584 if (var->bits_per_pixel != 32) {
585 IVTV_FB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
586 return -EINVAL;
587 }
588 }
589
590 if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) {
591 var->transp.offset = 24;
592 var->transp.length = 8;
593 var->red.offset = 16;
594 var->red.length = 8;
595 var->green.offset = 8;
596 var->green.length = 8;
597 var->blue.offset = 0;
598 var->blue.length = 8;
599 }
600 else if (var->bits_per_pixel == 16) {
601 /* To find out the true mode, check green length */
602 switch (var->green.length) {
603 case 4:
604 var->red.offset = 8;
605 var->red.length = 4;
606 var->green.offset = 4;
607 var->green.length = 4;
608 var->blue.offset = 0;
609 var->blue.length = 4;
610 var->transp.offset = 12;
611 var->transp.length = 1;
612 break;
613 case 5:
614 var->red.offset = 10;
615 var->red.length = 5;
616 var->green.offset = 5;
617 var->green.length = 5;
618 var->blue.offset = 0;
619 var->blue.length = 5;
620 var->transp.offset = 15;
621 var->transp.length = 1;
622 break;
623 default:
624 var->red.offset = 11;
625 var->red.length = 5;
626 var->green.offset = 5;
627 var->green.length = 6;
628 var->blue.offset = 0;
629 var->blue.length = 5;
630 var->transp.offset = 0;
631 var->transp.length = 0;
632 break;
633 }
634 }
635 else {
636 IVTV_FB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
637 return -EINVAL;
638 }
639
640 /* Check the resolution */
641 if (osd_compat) {
642 if (var->xres != oi->ivtvfb_defined.xres ||
643 var->yres != oi->ivtvfb_defined.yres ||
644 var->xres_virtual != oi->ivtvfb_defined.xres_virtual ||
645 var->yres_virtual != oi->ivtvfb_defined.yres_virtual) {
646 IVTV_FB_DEBUG_WARN("Invalid resolution: %dx%d (virtual %dx%d)\n",
647 var->xres, var->yres, var->xres_virtual, var->yres_virtual);
648 return -EINVAL;
649 }
650 }
651 else {
652 if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) {
653 IVTV_FB_DEBUG_WARN("Invalid resolution: %dx%d\n",
654 var->xres, var->yres);
655 return -EINVAL;
656 }
657
658 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
659 if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) ||
660 var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size ||
661 var->xres_virtual < var->xres ||
662 var->yres_virtual < var->yres) {
663 IVTV_FB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
664 var->xres_virtual, var->yres_virtual);
665 return -EINVAL;
666 }
667 }
668
669 /* Some extra checks if in 8 bit mode */
670 if (var->bits_per_pixel == 8) {
671 /* Width must be a multiple of 4 */
672 if (var->xres & 3) {
673 IVTV_FB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres);
674 return -EINVAL;
675 }
676 if (var->xres_virtual & 3) {
677 IVTV_FB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual);
678 return -EINVAL;
679 }
680 }
681 else if (var->bits_per_pixel == 16) {
682 /* Width must be a multiple of 2 */
683 if (var->xres & 1) {
684 IVTV_FB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres);
685 return -EINVAL;
686 }
687 if (var->xres_virtual & 1) {
688 IVTV_FB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual);
689 return -EINVAL;
690 }
691 }
692
693 /* Now check the offsets */
694 if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) {
695 IVTV_FB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
696 var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual);
697 return -EINVAL;
698 }
699
700 /* Check pixel format */
701 if (var->nonstd > 1) {
702 IVTV_FB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd);
703 return -EINVAL;
704 }
705
706 /* Check video mode */
707 if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) &&
708 ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) {
709 IVTV_FB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK);
710 return -EINVAL;
711 }
712
713 /* Check the left & upper margins
714 If the margins are too large, just center the screen
715 (enforcing margins causes too many problems) */
716
717 if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1) {
718 var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
719 }
720 if (var->upper_margin + var->yres > (itv->is_50hz ? 577 : 481)) {
721 var->upper_margin = 1 + (((itv->is_50hz ? 576 : 480) - var->yres) / 2);
722 }
723
724 /* Maintain overall 'size' for a constant refresh rate */
725 var->right_margin = hlimit - var->left_margin - var->xres;
726 var->lower_margin = vlimit - var->upper_margin - var->yres;
727
728 /* Fixed sync times */
729 var->hsync_len = 24;
730 var->vsync_len = 2;
731
732 /* Non-interlaced / interlaced mode is used to switch the OSD filter
733 on or off. Adjust the clock timings to maintain a constant
734 vertical refresh rate. */
735 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED)
736 var->pixclock = pixclock / 2;
737 else
738 var->pixclock = pixclock;
739
740 IVTV_FB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
741 var->xres, var->yres,
742 var->xres_virtual, var->yres_virtual,
743 var->bits_per_pixel);
744
745 IVTV_FB_DEBUG_INFO("Display position: %d, %d\n",
746 var->left_margin, var->upper_margin);
747
748 IVTV_FB_DEBUG_INFO("Display filter: %s\n",
749 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
750 IVTV_FB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
751 return 0;
752 }
753
754 static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
755 {
756 struct ivtv *itv = (struct ivtv *) info->par;
757 IVTV_FB_DEBUG_INFO("ivtvfb_check_var\n");
758 return _ivtvfb_check_var(var, itv);
759 }
760
761 static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
762 {
763 u32 osd_pan_index;
764 struct ivtv *itv = (struct ivtv *) info->par;
765
766 osd_pan_index = (var->xoffset + (var->yoffset * var->xres_virtual))*var->bits_per_pixel/8;
767 write_reg(osd_pan_index, 0x02A0C);
768
769 /* Pass this info back the yuv handler */
770 itv->yuv_info.osd_x_pan = var->xoffset;
771 itv->yuv_info.osd_y_pan = var->yoffset;
772 /* Force update of yuv registers */
773 itv->yuv_info.yuv_forced_update = 1;
774 return 0;
775 }
776
777 static int ivtvfb_set_par(struct fb_info *info)
778 {
779 int rc = 0;
780 struct ivtv *itv = (struct ivtv *) info->par;
781
782 IVTV_FB_DEBUG_INFO("ivtvfb_set_par\n");
783
784 rc = ivtvfb_set_var(itv, &info->var);
785 ivtvfb_pan_display(&info->var, info);
786 ivtvfb_get_fix(itv, &info->fix);
787 return rc;
788 }
789
790 static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
791 unsigned blue, unsigned transp,
792 struct fb_info *info)
793 {
794 u32 color, *palette;
795 struct ivtv *itv = (struct ivtv *)info->par;
796
797 if (regno >= info->cmap.len)
798 return -EINVAL;
799
800 color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8);
801 if (info->var.bits_per_pixel <= 8) {
802 write_reg(regno, 0x02a30);
803 write_reg(color, 0x02a34);
804 return 0;
805 }
806 if (regno >= 16)
807 return -EINVAL;
808
809 palette = info->pseudo_palette;
810 if (info->var.bits_per_pixel == 16) {
811 switch (info->var.green.length) {
812 case 4:
813 color = ((red & 0xf000) >> 4) |
814 ((green & 0xf000) >> 8) |
815 ((blue & 0xf000) >> 12);
816 break;
817 case 5:
818 color = ((red & 0xf800) >> 1) |
819 ((green & 0xf800) >> 6) |
820 ((blue & 0xf800) >> 11);
821 break;
822 case 6:
823 color = (red & 0xf800 ) |
824 ((green & 0xfc00) >> 5) |
825 ((blue & 0xf800) >> 11);
826 break;
827 }
828 }
829 palette[regno] = color;
830 return 0;
831 }
832
833 /* We don't really support blanking. All this does is enable or
834 disable the OSD. */
835 static int ivtvfb_blank(int blank_mode, struct fb_info *info)
836 {
837 struct ivtv *itv = (struct ivtv *)info->par;
838
839 IVTV_FB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode);
840 switch (blank_mode) {
841 case FB_BLANK_UNBLANK:
842 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
843 break;
844 case FB_BLANK_NORMAL:
845 case FB_BLANK_HSYNC_SUSPEND:
846 case FB_BLANK_VSYNC_SUSPEND:
847 case FB_BLANK_POWERDOWN:
848 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
849 break;
850 }
851 return 0;
852 }
853
854 static struct fb_ops ivtvfb_ops = {
855 .owner = THIS_MODULE,
856 .fb_check_var = ivtvfb_check_var,
857 .fb_set_par = ivtvfb_set_par,
858 .fb_setcolreg = ivtvfb_setcolreg,
859 .fb_fillrect = cfb_fillrect,
860 .fb_copyarea = cfb_copyarea,
861 .fb_imageblit = cfb_imageblit,
862 .fb_cursor = NULL,
863 .fb_ioctl = ivtvfb_ioctl,
864 .fb_pan_display = ivtvfb_pan_display,
865 .fb_blank = ivtvfb_blank,
866 };
867
868 /* Initialization */
869
870
871 /* Setup our initial video mode */
872 static int ivtvfb_init_vidmode(struct ivtv *itv)
873 {
874 struct osd_info *oi = itv->osd_info;
875 struct v4l2_rect start_window;
876 int max_height;
877
878 /* Color mode */
879
880 if (osd_compat) osd_depth = 32;
881 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32) osd_depth = 8;
882 oi->bits_per_pixel = osd_depth;
883 oi->bytes_per_pixel = oi->bits_per_pixel / 8;
884
885 /* Invalidate current osd mode to force a mode switch later */
886 oi->osd_mode = -1;
887
888 /* Horizontal size & position */
889
890 if (osd_xres > 720) osd_xres = 720;
891
892 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
893 if (osd_depth == 8)
894 osd_xres &= ~3;
895 else if (osd_depth == 16)
896 osd_xres &= ~1;
897
898 if (osd_xres)
899 start_window.width = osd_xres;
900 else
901 start_window.width = osd_compat ? 720: 640;
902
903 /* Check horizontal start (osd_left). */
904 if (osd_left && osd_left + start_window.width > 721) {
905 IVTV_FB_ERR("Invalid osd_left - assuming default\n");
906 osd_left = 0;
907 }
908
909 /* Hardware coords start at 0, user coords start at 1. */
910 osd_left--;
911
912 start_window.left = osd_left >= 0 ? osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
913
914 oi->display_byte_stride =
915 start_window.width * oi->bytes_per_pixel;
916
917 /* Vertical size & position */
918
919 max_height = itv->is_50hz ? 576 : 480;
920
921 if (osd_yres > max_height)
922 osd_yres = max_height;
923
924 if (osd_yres)
925 start_window.height = osd_yres;
926 else
927 start_window.height = osd_compat ? max_height : (itv->is_50hz ? 480 : 400);
928
929 /* Check vertical start (osd_upper). */
930 if (osd_upper + start_window.height > max_height + 1) {
931 IVTV_FB_ERR("Invalid osd_upper - assuming default\n");
932 osd_upper = 0;
933 }
934
935 /* Hardware coords start at 0, user coords start at 1. */
936 osd_upper--;
937
938 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
939
940 oi->display_width = start_window.width;
941 oi->display_height = start_window.height;
942
943 /* Generate a valid fb_var_screeninfo */
944
945 oi->ivtvfb_defined.xres = oi->display_width;
946 oi->ivtvfb_defined.yres = oi->display_height;
947 oi->ivtvfb_defined.xres_virtual = oi->display_width;
948 oi->ivtvfb_defined.yres_virtual = oi->display_height;
949 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
950 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
951 oi->ivtvfb_defined.left_margin = start_window.left + 1;
952 oi->ivtvfb_defined.upper_margin = start_window.top + 1;
953 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
954 oi->ivtvfb_defined.nonstd = 0;
955
956 /* We've filled in the most data, let the usual mode check
957 routine fill in the rest. */
958 _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
959
960 /* Generate valid fb_fix_screeninfo */
961
962 ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
963
964 /* Generate valid fb_info */
965
966 oi->ivtvfb_info.node = -1;
967 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
968 oi->ivtvfb_info.fbops = &ivtvfb_ops;
969 oi->ivtvfb_info.par = itv;
970 oi->ivtvfb_info.var = oi->ivtvfb_defined;
971 oi->ivtvfb_info.fix = oi->ivtvfb_fix;
972 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
973 oi->ivtvfb_info.fbops = &ivtvfb_ops;
974
975 /* Supply some monitor specs. Bogus values will do for now */
976 oi->ivtvfb_info.monspecs.hfmin = 8000;
977 oi->ivtvfb_info.monspecs.hfmax = 70000;
978 oi->ivtvfb_info.monspecs.vfmin = 10;
979 oi->ivtvfb_info.monspecs.vfmax = 100;
980
981 /* Allocate color map */
982 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
983 IVTV_FB_ERR("abort, unable to alloc cmap\n");
984 return -ENOMEM;
985 }
986
987 /* Allocate the pseudo palette */
988 oi->ivtvfb_info.pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
989
990 if (!oi->ivtvfb_info.pseudo_palette) {
991 IVTV_FB_ERR("abort, unable to alloc pseudo pallete\n");
992 return -ENOMEM;
993 }
994
995 return 0;
996 }
997
998 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
999
1000 static int ivtvfb_init_io(struct ivtv *itv)
1001 {
1002 struct osd_info *oi = itv->osd_info;
1003
1004 mutex_lock(&itv->serialize_lock);
1005 if (ivtv_init_on_first_open(itv)) {
1006 mutex_unlock(&itv->serialize_lock);
1007 IVTV_FB_ERR("Failed to initialize ivtv\n");
1008 return -ENXIO;
1009 }
1010 mutex_unlock(&itv->serialize_lock);
1011
1012 ivtv_fb_get_framebuffer(itv, &oi->video_rbase, &oi->video_buffer_size);
1013
1014 /* The osd buffer size depends on the number of video buffers allocated
1015 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
1016 size to prevent any overlap. */
1017 oi->video_buffer_size = 1704960;
1018
1019 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
1020 oi->video_vbase = itv->dec_mem + oi->video_rbase;
1021
1022 if (!oi->video_vbase) {
1023 IVTV_FB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
1024 oi->video_buffer_size, oi->video_pbase);
1025 return -EIO;
1026 }
1027
1028 IVTV_FB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
1029 oi->video_pbase, oi->video_vbase,
1030 oi->video_buffer_size / 1024);
1031
1032 #ifdef CONFIG_MTRR
1033 {
1034 /* Find the largest power of two that maps the whole buffer */
1035 int size_shift = 31;
1036
1037 while (!(oi->video_buffer_size & (1 << size_shift))) {
1038 size_shift--;
1039 }
1040 size_shift++;
1041 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
1042 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
1043 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
1044 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
1045 if (mtrr_add(oi->fb_start_aligned_physaddr,
1046 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr,
1047 MTRR_TYPE_WRCOMB, 1) < 0) {
1048 IVTV_FB_WARN("cannot use mttr\n");
1049 oi->fb_start_aligned_physaddr = 0;
1050 oi->fb_end_aligned_physaddr = 0;
1051 }
1052 }
1053 #endif
1054
1055 /* Blank the entire osd. */
1056 memset_io(oi->video_vbase, 0, oi->video_buffer_size);
1057
1058 return 0;
1059 }
1060
1061 /* Release any memory we've grabbed & remove mtrr entry */
1062 static void ivtvfb_release_buffers (struct ivtv *itv)
1063 {
1064 struct osd_info *oi = itv->osd_info;
1065
1066 /* Release cmap */
1067 if (oi->ivtvfb_info.cmap.len);
1068 fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
1069
1070 /* Release pseudo palette */
1071 if (oi->ivtvfb_info.pseudo_palette)
1072 kfree(oi->ivtvfb_info.pseudo_palette);
1073
1074 #ifdef CONFIG_MTRR
1075 if (oi->fb_end_aligned_physaddr) {
1076 mtrr_del(-1, oi->fb_start_aligned_physaddr,
1077 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr);
1078 }
1079 #endif
1080
1081 kfree(oi);
1082 itv->osd_info = NULL;
1083 }
1084
1085 /* Initialize the specified card */
1086
1087 static int ivtvfb_init_card(struct ivtv *itv)
1088 {
1089 int rc;
1090
1091 if (itv->osd_info) {
1092 IVTV_FB_ERR("Card %d already initialised\n", ivtv_fb_card_id);
1093 return -EBUSY;
1094 }
1095
1096 itv->osd_info = kzalloc(sizeof(struct osd_info), GFP_ATOMIC);
1097 if (itv->osd_info == 0) {
1098 IVTV_FB_ERR("Failed to allocate memory for osd_info\n");
1099 return -ENOMEM;
1100 }
1101
1102 /* Find & setup the OSD buffer */
1103 if ((rc = ivtvfb_init_io(itv)))
1104 return rc;
1105
1106 /* Set the startup video mode information */
1107 if ((rc = ivtvfb_init_vidmode(itv))) {
1108 ivtvfb_release_buffers(itv);
1109 return rc;
1110 }
1111
1112 /* Register the framebuffer */
1113 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
1114 ivtvfb_release_buffers(itv);
1115 return -EINVAL;
1116 }
1117
1118 itv->osd_video_pbase = itv->osd_info->video_pbase;
1119
1120 /* Set the card to the requested mode */
1121 ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
1122
1123 /* Set color 0 to black */
1124 write_reg(0, 0x02a30);
1125 write_reg(0, 0x02a34);
1126
1127 /* Enable the osd */
1128 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
1129
1130 /* Note if we're running in compatibility mode */
1131 if (osd_compat)
1132 IVTV_FB_INFO("Running in compatibility mode. Display resize & mode change disabled\n");
1133
1134 /* Allocate DMA */
1135 ivtv_udma_alloc(itv);
1136 return 0;
1137
1138 }
1139
1140 static int __init ivtvfb_init(void)
1141 {
1142 struct ivtv *itv;
1143 int i, registered = 0;
1144
1145 if (ivtv_fb_card_id < -1 || ivtv_fb_card_id >= IVTV_MAX_CARDS) {
1146 printk(KERN_ERR "ivtv-fb: ivtv_fb_card_id parameter is out of range (valid range: -1 - %d)\n",
1147 IVTV_MAX_CARDS - 1);
1148 return -EINVAL;
1149 }
1150
1151 /* Locate & initialise all cards supporting an OSD. */
1152 for (i = 0; i < ivtv_cards_active; i++) {
1153 if (ivtv_fb_card_id != -1 && i != ivtv_fb_card_id)
1154 continue;
1155 itv = ivtv_cards[i];
1156 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
1157 if (ivtvfb_init_card(itv) == 0) {
1158 IVTV_FB_INFO("Framebuffer registered on ivtv card id %d\n", i);
1159 registered++;
1160 }
1161 }
1162 }
1163 if (!registered) {
1164 printk(KERN_ERR "ivtv-fb: no cards found");
1165 return -ENODEV;
1166 }
1167 return 0;
1168 }
1169
1170 static void ivtvfb_cleanup(void)
1171 {
1172 struct ivtv *itv;
1173 int i;
1174
1175 printk(KERN_INFO "ivtv-fb: Unloading framebuffer module\n");
1176
1177 for (i = 0; i < ivtv_cards_active; i++) {
1178 itv = ivtv_cards[i];
1179 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) && itv->osd_info) {
1180 IVTV_FB_DEBUG_INFO("Unregister framebuffer %d\n", i);
1181 ivtvfb_blank(FB_BLANK_POWERDOWN, &itv->osd_info->ivtvfb_info);
1182 unregister_framebuffer(&itv->osd_info->ivtvfb_info);
1183 ivtvfb_release_buffers(itv);
1184 itv->osd_video_pbase = 0;
1185 }
1186 }
1187 }
1188
1189 module_init(ivtvfb_init);
1190 module_exit(ivtvfb_cleanup);
Linux kernel - Deliverables
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