2 On Screen Display cx23415 Framebuffer driver
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)
14 Copyright (c) 2003 Matt T. Yourst <yourst@yourst.com>
16 Derived from drivers/video/vesafb.c
17 Portions (c) 1998 Gerd Knorr <kraxel@goldbach.in-berlin.de>
20 Copyright (C) 2004 Matthias Badaire
22 Copyright (C) 2004 Chris Kennedy <c@groovy.org>
24 Copyright (C) 2006 Ian Armstrong <ian@iarmst.demon.co.uk>
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.
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.
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
41 #include <linux/module.h>
42 #include <linux/kernel.h>
44 #include <linux/ivtvfb.h>
50 #include "ivtv-driver.h"
52 #include "ivtv-udma.h"
53 #include "ivtv-mailbox.h"
56 static int ivtvfb_card_id = -1;
57 static int ivtvfb_debug = 0;
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);
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");
78 MODULE_PARM_DESC(debug,
79 "Debug level (bitmask). Default: errors only\n"
80 "\t\t\t(debug = 3 gives full debugging)");
82 /* Why upper, left, xres, yres, depth, laced ? To match terminology used
84 Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */
86 MODULE_PARM_DESC(osd_laced,
92 MODULE_PARM_DESC(osd_depth,
93 "Bits per pixel - 8, 16, 32\n"
96 MODULE_PARM_DESC(osd_upper,
97 "Vertical start position\n"
98 "\t\t\tdefault 0 (Centered)");
100 MODULE_PARM_DESC(osd_left,
101 "Horizontal start position\n"
102 "\t\t\tdefault 0 (Centered)");
104 MODULE_PARM_DESC(osd_yres,
106 "\t\t\tdefault 480 (PAL)\n"
107 "\t\t\t 400 (NTSC)");
109 MODULE_PARM_DESC(osd_xres,
111 "\t\t\tdefault 640");
113 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong");
114 MODULE_LICENSE("GPL");
116 /* --------------------------------------------------------------------- */
118 #define IVTVFB_DBGFLG_WARN (1 << 0)
119 #define IVTVFB_DBGFLG_INFO (1 << 1)
121 #define IVTVFB_DEBUG(x, type, fmt, args...) \
123 if ((x) & ivtvfb_debug) \
124 printk(KERN_INFO "ivtvfb%d " type ": " fmt, itv->num , ## args); \
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)
129 /* Standard kernel messages */
130 #define IVTVFB_ERR(fmt, args...) printk(KERN_ERR "ivtvfb%d: " fmt, itv->num , ## args)
131 #define IVTVFB_WARN(fmt, args...) printk(KERN_WARNING "ivtvfb%d: " fmt, itv->num , ## args)
132 #define IVTVFB_INFO(fmt, args...) printk(KERN_INFO "ivtvfb%d: " fmt, itv->num , ## args)
134 /* --------------------------------------------------------------------- */
136 #define IVTV_OSD_MAX_WIDTH 720
137 #define IVTV_OSD_MAX_HEIGHT 576
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
146 /* Physical base address */
147 unsigned long video_pbase;
148 /* Relative base address (relative to start of decoder memory) */
150 /* Mapped base address */
151 volatile char __iomem *video_vbase;
153 u32 video_buffer_size;
156 /* video_base rounded down as required by hardware MTRRs */
157 unsigned long fb_start_aligned_physaddr;
158 /* video_base rounded up as required by hardware MTRRs */
159 unsigned long fb_end_aligned_physaddr;
162 /* Store the buffer offset */
163 int set_osd_coords_x;
164 int set_osd_coords_y;
166 /* Current dimensions (NOT VISIBLE SIZE!) */
169 int display_byte_stride;
171 /* Current bits per pixel */
175 /* Frame buffer stuff */
176 struct fb_info ivtvfb_info;
177 struct fb_var_screeninfo ivtvfb_defined;
178 struct fb_fix_screeninfo ivtvfb_fix;
181 struct ivtv_osd_coords {
182 unsigned long offset;
183 unsigned long max_offset;
190 /* --------------------------------------------------------------------- */
192 /* ivtv API calls for framebuffer related support */
194 static int ivtvfb_get_framebuffer(struct ivtv *itv, u32 *fbbase,
197 u32 data[CX2341X_MBOX_MAX_DATA];
200 rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0);
206 static int ivtvfb_get_osd_coords(struct ivtv *itv,
207 struct ivtv_osd_coords *osd)
209 struct osd_info *oi = itv->osd_info;
210 u32 data[CX2341X_MBOX_MAX_DATA];
212 ivtv_vapi_result(itv, data, CX2341X_OSD_GET_OSD_COORDS, 0);
214 osd->offset = data[0] - oi->video_rbase;
215 osd->max_offset = oi->display_width * oi->display_height * 4;
216 osd->pixel_stride = data[1];
217 osd->lines = data[2];
223 static int ivtvfb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords *osd)
225 struct osd_info *oi = itv->osd_info;
227 oi->display_width = osd->pixel_stride;
228 oi->display_byte_stride = osd->pixel_stride * oi->bytes_per_pixel;
229 oi->set_osd_coords_x += osd->x;
230 oi->set_osd_coords_y = osd->y;
232 return ivtv_vapi(itv, CX2341X_OSD_SET_OSD_COORDS, 5,
233 osd->offset + oi->video_rbase,
235 osd->lines, osd->x, osd->y);
238 static int ivtvfb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window)
240 int osd_height_limit = itv->is_50hz ? 576 : 480;
242 /* Only fail if resolution too high, otherwise fudge the start coords. */
243 if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH))
246 /* Ensure we don't exceed display limits */
247 if (ivtv_window->top + ivtv_window->height > osd_height_limit) {
248 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n",
249 ivtv_window->top, ivtv_window->height);
250 ivtv_window->top = osd_height_limit - ivtv_window->height;
253 if (ivtv_window->left + ivtv_window->width > IVTV_OSD_MAX_WIDTH) {
254 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n",
255 ivtv_window->left, ivtv_window->width);
256 ivtv_window->left = IVTV_OSD_MAX_WIDTH - ivtv_window->width;
259 /* Set the OSD origin */
260 write_reg((ivtv_window->top << 16) | ivtv_window->left, 0x02a04);
262 /* How much to display */
263 write_reg(((ivtv_window->top+ivtv_window->height) << 16) | (ivtv_window->left+ivtv_window->width), 0x02a08);
265 /* Pass this info back the yuv handler */
266 itv->yuv_info.osd_vis_w = ivtv_window->width;
267 itv->yuv_info.osd_vis_h = ivtv_window->height;
268 itv->yuv_info.osd_x_offset = ivtv_window->left;
269 itv->yuv_info.osd_y_offset = ivtv_window->top;
274 static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv,
275 unsigned long ivtv_dest_addr, void __user *userbuf,
281 mutex_lock(&itv->udma.lock);
283 if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
284 mutex_unlock(&itv->udma.lock);
285 IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, "
286 "Error with get_user_pages: %d bytes, %d pages returned\n",
287 size_in_bytes, itv->udma.page_count);
289 /* get_user_pages must have failed completely */
293 IVTVFB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n",
294 size_in_bytes, itv->udma.page_count);
296 ivtv_udma_prepare(itv);
297 prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
298 /* if no UDMA is pending and no UDMA is in progress, then the DMA
300 while (itv->i_flags & (IVTV_F_I_UDMA_PENDING | IVTV_F_I_UDMA)) {
301 /* don't interrupt if the DMA is in progress but break off
302 a still pending DMA. */
303 got_sig = signal_pending(current);
304 if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags))
309 finish_wait(&itv->dma_waitq, &wait);
311 /* Unmap Last DMA Xfer */
312 ivtv_udma_unmap(itv);
313 mutex_unlock(&itv->udma.lock);
315 IVTV_DEBUG_INFO("User stopped OSD\n");
322 static int ivtvfb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
323 unsigned long dest_offset, int count)
326 struct osd_info *oi = itv->osd_info;
330 IVTVFB_DEBUG_WARN("ivtvfb_prep_frame: Nothing to do. count = 0\n");
334 /* Check Total FB Size */
335 if ((dest_offset + count) > oi->video_buffer_size) {
336 IVTVFB_WARN("ivtvfb_prep_frame: Overflowing the framebuffer %ld, only %d available\n",
337 dest_offset + count, oi->video_buffer_size);
341 /* Not fatal, but will have undesirable results */
342 if ((unsigned long)source & 3)
343 IVTVFB_WARN("ivtvfb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n",
344 (unsigned long)source);
347 IVTVFB_WARN("ivtvfb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset);
350 IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count);
353 if (!access_ok(VERIFY_READ, source + dest_offset, count)) {
354 IVTVFB_WARN("Invalid userspace pointer 0x%08lx\n",
355 (unsigned long)source);
357 IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source 0x%08lx count %d\n",
358 dest_offset, (unsigned long)source,
363 /* OSD Address to send DMA to */
364 dest_offset += IVTV_DECODER_OFFSET + oi->video_rbase;
367 return ivtvfb_prep_dec_dma_to_device(itv, dest_offset, source, count);
370 static ssize_t ivtvfb_write(struct fb_info *info, const char __user *buf,
371 size_t count, loff_t *ppos)
373 unsigned long p = *ppos;
377 unsigned long total_size;
378 struct ivtv *itv = (struct ivtv *) info->par;
379 unsigned long dma_offset =
380 IVTV_DECODER_OFFSET + itv->osd_info->video_rbase;
381 unsigned long dma_size;
382 u16 lead = 0, tail = 0;
384 if (info->state != FBINFO_STATE_RUNNING)
387 total_size = info->screen_size;
390 total_size = info->fix.smem_len;
395 if (count > total_size) {
400 if (count + p > total_size) {
403 count = total_size - p;
406 dst = (void __force *) (info->screen_base + p);
408 if (info->fbops->fb_sync)
409 info->fbops->fb_sync(info);
411 /* If transfer size > threshold and both src/dst
412 addresses are aligned, use DMA */
414 ((unsigned long)buf & 3) == ((unsigned long)dst & 3)) {
415 /* Odd address = can't DMA. Align */
416 if ((unsigned long)dst & 3) {
417 lead = 4 - ((unsigned long)dst & 3);
418 if (copy_from_user(dst, buf, lead))
423 /* DMA resolution is 32 bits */
424 if ((count - lead) & 3)
425 tail = (count - lead) & 3;
427 dma_size = count - lead - tail;
428 dma_err = ivtvfb_prep_dec_dma_to_device(itv,
429 p + lead + dma_offset, (void __user *)buf, dma_size);
434 /* Copy any leftover data */
435 if (tail && copy_from_user(dst, buf, tail))
437 } else if (copy_from_user(dst, buf, count)) {
444 return (err) ? err : count;
447 static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
450 struct ivtv *itv = (struct ivtv *)info->par;
454 case FBIOGET_VBLANK: {
455 struct fb_vblank vblank;
458 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
459 FB_VBLANK_HAVE_VSYNC;
460 trace = read_reg(0x028c0) >> 16;
461 if (itv->is_50hz && trace > 312)
463 else if (itv->is_60hz && trace > 262)
466 vblank.flags |= FB_VBLANK_VSYNCING;
467 vblank.count = itv->last_vsync_field;
468 vblank.vcount = trace;
470 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
475 case FBIO_WAITFORVSYNC:
476 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
477 if (!schedule_timeout(msecs_to_jiffies(50)))
479 finish_wait(&itv->vsync_waitq, &wait);
482 case IVTVFB_IOC_DMA_FRAME: {
483 struct ivtvfb_dma_frame args;
485 IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
486 if (copy_from_user(&args, (void __user *)arg, sizeof(args)))
489 return ivtvfb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count);
493 IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd);
499 /* Framebuffer device handling */
501 static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
503 struct osd_info *oi = itv->osd_info;
504 struct ivtv_osd_coords ivtv_osd;
505 struct v4l2_rect ivtv_window;
508 IVTVFB_DEBUG_INFO("ivtvfb_set_var\n");
510 /* Select color space */
511 if (var->nonstd) /* YUV */
512 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
514 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
516 /* Set the color mode */
517 switch (var->bits_per_pixel) {
519 osd_mode = IVTV_OSD_BPP_8;
522 osd_mode = IVTV_OSD_BPP_32;
525 switch (var->green.length) {
527 osd_mode = IVTV_OSD_BPP_16_444;
530 osd_mode = IVTV_OSD_BPP_16_555;
533 osd_mode = IVTV_OSD_BPP_16_565;
536 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
540 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
543 /* Set video mode. Although rare, the display can become scrambled even
544 if we don't change mode. Always 'bounce' to osd_mode via mode 0 */
545 if (osd_mode != -1) {
546 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
547 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode);
550 oi->bits_per_pixel = var->bits_per_pixel;
551 oi->bytes_per_pixel = var->bits_per_pixel / 8;
553 /* Set the flicker filter */
554 switch (var->vmode & FB_VMODE_MASK) {
555 case FB_VMODE_NONINTERLACED: /* Filter on */
556 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1);
558 case FB_VMODE_INTERLACED: /* Filter off */
559 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0);
562 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
565 /* Read the current osd info */
566 ivtvfb_get_osd_coords(itv, &ivtv_osd);
568 /* Now set the OSD to the size we want */
569 ivtv_osd.pixel_stride = var->xres_virtual;
570 ivtv_osd.lines = var->yres_virtual;
573 ivtvfb_set_osd_coords(itv, &ivtv_osd);
575 /* Can't seem to find the right API combo for this.
576 Use another function which does what we need through direct register access. */
577 ivtv_window.width = var->xres;
578 ivtv_window.height = var->yres;
580 /* Minimum margin cannot be 0, as X won't allow such a mode */
581 if (!var->upper_margin) var->upper_margin++;
582 if (!var->left_margin) var->left_margin++;
583 ivtv_window.top = var->upper_margin - 1;
584 ivtv_window.left = var->left_margin - 1;
586 ivtvfb_set_display_window(itv, &ivtv_window);
588 /* Pass screen size back to yuv handler */
589 itv->yuv_info.osd_full_w = ivtv_osd.pixel_stride;
590 itv->yuv_info.osd_full_h = ivtv_osd.lines;
592 /* Force update of yuv registers */
593 itv->yuv_info.yuv_forced_update = 1;
595 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
596 var->xres, var->yres,
597 var->xres_virtual, var->yres_virtual,
598 var->bits_per_pixel);
600 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
601 var->left_margin, var->upper_margin);
603 IVTVFB_DEBUG_INFO("Display filter: %s\n",
604 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
605 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
610 static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix)
612 struct osd_info *oi = itv->osd_info;
614 IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n");
615 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
616 strlcpy(fix->id, "cx23415 TV out", sizeof(fix->id));
617 fix->smem_start = oi->video_pbase;
618 fix->smem_len = oi->video_buffer_size;
619 fix->type = FB_TYPE_PACKED_PIXELS;
620 fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
624 fix->line_length = oi->display_byte_stride;
625 fix->accel = FB_ACCEL_NONE;
629 /* Check the requested display mode, returning -EINVAL if we can't
632 static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
634 struct osd_info *oi = itv->osd_info;
635 int osd_height_limit;
636 u32 pixclock, hlimit, vlimit;
638 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
640 /* Set base references for mode calcs. */
645 osd_height_limit = 576;
651 osd_height_limit = 480;
654 if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) {
655 var->transp.offset = 24;
656 var->transp.length = 8;
657 var->red.offset = 16;
659 var->green.offset = 8;
660 var->green.length = 8;
661 var->blue.offset = 0;
662 var->blue.length = 8;
664 else if (var->bits_per_pixel == 16) {
665 /* To find out the true mode, check green length */
666 switch (var->green.length) {
670 var->green.offset = 4;
671 var->green.length = 4;
672 var->blue.offset = 0;
673 var->blue.length = 4;
674 var->transp.offset = 12;
675 var->transp.length = 1;
678 var->red.offset = 10;
680 var->green.offset = 5;
681 var->green.length = 5;
682 var->blue.offset = 0;
683 var->blue.length = 5;
684 var->transp.offset = 15;
685 var->transp.length = 1;
688 var->red.offset = 11;
690 var->green.offset = 5;
691 var->green.length = 6;
692 var->blue.offset = 0;
693 var->blue.length = 5;
694 var->transp.offset = 0;
695 var->transp.length = 0;
700 IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
704 /* Check the resolution */
705 if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) {
706 IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n",
707 var->xres, var->yres);
711 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
712 if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) ||
713 var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size ||
714 var->xres_virtual < var->xres ||
715 var->yres_virtual < var->yres) {
716 IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
717 var->xres_virtual, var->yres_virtual);
721 /* Some extra checks if in 8 bit mode */
722 if (var->bits_per_pixel == 8) {
723 /* Width must be a multiple of 4 */
725 IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres);
728 if (var->xres_virtual & 3) {
729 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual);
733 else if (var->bits_per_pixel == 16) {
734 /* Width must be a multiple of 2 */
736 IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres);
739 if (var->xres_virtual & 1) {
740 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual);
745 /* Now check the offsets */
746 if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) {
747 IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
748 var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual);
752 /* Check pixel format */
753 if (var->nonstd > 1) {
754 IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd);
758 /* Check video mode */
759 if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) &&
760 ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) {
761 IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK);
765 /* Check the left & upper margins
766 If the margins are too large, just center the screen
767 (enforcing margins causes too many problems) */
769 if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1) {
770 var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
772 if (var->upper_margin + var->yres > (itv->is_50hz ? 577 : 481)) {
773 var->upper_margin = 1 + (((itv->is_50hz ? 576 : 480) - var->yres) / 2);
776 /* Maintain overall 'size' for a constant refresh rate */
777 var->right_margin = hlimit - var->left_margin - var->xres;
778 var->lower_margin = vlimit - var->upper_margin - var->yres;
780 /* Fixed sync times */
784 /* Non-interlaced / interlaced mode is used to switch the OSD filter
785 on or off. Adjust the clock timings to maintain a constant
786 vertical refresh rate. */
787 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED)
788 var->pixclock = pixclock / 2;
790 var->pixclock = pixclock;
792 itv->osd_rect.width = var->xres;
793 itv->osd_rect.height = var->yres;
795 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
796 var->xres, var->yres,
797 var->xres_virtual, var->yres_virtual,
798 var->bits_per_pixel);
800 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
801 var->left_margin, var->upper_margin);
803 IVTVFB_DEBUG_INFO("Display filter: %s\n",
804 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
805 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
809 static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
811 struct ivtv *itv = (struct ivtv *) info->par;
812 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
813 return _ivtvfb_check_var(var, itv);
816 static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
819 struct ivtv *itv = (struct ivtv *) info->par;
821 osd_pan_index = (var->xoffset + (var->yoffset * var->xres_virtual))*var->bits_per_pixel/8;
822 write_reg(osd_pan_index, 0x02A0C);
824 /* Pass this info back the yuv handler */
825 itv->yuv_info.osd_x_pan = var->xoffset;
826 itv->yuv_info.osd_y_pan = var->yoffset;
827 /* Force update of yuv registers */
828 itv->yuv_info.yuv_forced_update = 1;
832 static int ivtvfb_set_par(struct fb_info *info)
835 struct ivtv *itv = (struct ivtv *) info->par;
837 IVTVFB_DEBUG_INFO("ivtvfb_set_par\n");
839 rc = ivtvfb_set_var(itv, &info->var);
840 ivtvfb_pan_display(&info->var, info);
841 ivtvfb_get_fix(itv, &info->fix);
845 static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
846 unsigned blue, unsigned transp,
847 struct fb_info *info)
850 struct ivtv *itv = (struct ivtv *)info->par;
852 if (regno >= info->cmap.len)
855 color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8);
856 if (info->var.bits_per_pixel <= 8) {
857 write_reg(regno, 0x02a30);
858 write_reg(color, 0x02a34);
864 palette = info->pseudo_palette;
865 if (info->var.bits_per_pixel == 16) {
866 switch (info->var.green.length) {
868 color = ((red & 0xf000) >> 4) |
869 ((green & 0xf000) >> 8) |
870 ((blue & 0xf000) >> 12);
873 color = ((red & 0xf800) >> 1) |
874 ((green & 0xf800) >> 6) |
875 ((blue & 0xf800) >> 11);
878 color = (red & 0xf800 ) |
879 ((green & 0xfc00) >> 5) |
880 ((blue & 0xf800) >> 11);
884 palette[regno] = color;
888 /* We don't really support blanking. All this does is enable or
890 static int ivtvfb_blank(int blank_mode, struct fb_info *info)
892 struct ivtv *itv = (struct ivtv *)info->par;
894 IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode);
895 switch (blank_mode) {
896 case FB_BLANK_UNBLANK:
897 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
898 ivtv_saa7127(itv, VIDIOC_STREAMON, NULL);
900 case FB_BLANK_NORMAL:
901 case FB_BLANK_HSYNC_SUSPEND:
902 case FB_BLANK_VSYNC_SUSPEND:
903 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
904 ivtv_saa7127(itv, VIDIOC_STREAMON, NULL);
906 case FB_BLANK_POWERDOWN:
907 ivtv_saa7127(itv, VIDIOC_STREAMOFF, NULL);
908 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
914 static struct fb_ops ivtvfb_ops = {
915 .owner = THIS_MODULE,
916 .fb_write = ivtvfb_write,
917 .fb_check_var = ivtvfb_check_var,
918 .fb_set_par = ivtvfb_set_par,
919 .fb_setcolreg = ivtvfb_setcolreg,
920 .fb_fillrect = cfb_fillrect,
921 .fb_copyarea = cfb_copyarea,
922 .fb_imageblit = cfb_imageblit,
924 .fb_ioctl = ivtvfb_ioctl,
925 .fb_pan_display = ivtvfb_pan_display,
926 .fb_blank = ivtvfb_blank,
932 /* Setup our initial video mode */
933 static int ivtvfb_init_vidmode(struct ivtv *itv)
935 struct osd_info *oi = itv->osd_info;
936 struct v4l2_rect start_window;
941 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32)
943 oi->bits_per_pixel = osd_depth;
944 oi->bytes_per_pixel = oi->bits_per_pixel / 8;
946 /* Horizontal size & position */
951 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
954 else if (osd_depth == 16)
957 start_window.width = osd_xres ? osd_xres : 640;
959 /* Check horizontal start (osd_left). */
960 if (osd_left && osd_left + start_window.width > 721) {
961 IVTVFB_ERR("Invalid osd_left - assuming default\n");
965 /* Hardware coords start at 0, user coords start at 1. */
968 start_window.left = osd_left >= 0 ? osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
970 oi->display_byte_stride =
971 start_window.width * oi->bytes_per_pixel;
973 /* Vertical size & position */
975 max_height = itv->is_50hz ? 576 : 480;
977 if (osd_yres > max_height)
978 osd_yres = max_height;
980 start_window.height = osd_yres ? osd_yres : itv->is_50hz ? 480 : 400;
982 /* Check vertical start (osd_upper). */
983 if (osd_upper + start_window.height > max_height + 1) {
984 IVTVFB_ERR("Invalid osd_upper - assuming default\n");
988 /* Hardware coords start at 0, user coords start at 1. */
991 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
993 oi->display_width = start_window.width;
994 oi->display_height = start_window.height;
996 /* Generate a valid fb_var_screeninfo */
998 oi->ivtvfb_defined.xres = oi->display_width;
999 oi->ivtvfb_defined.yres = oi->display_height;
1000 oi->ivtvfb_defined.xres_virtual = oi->display_width;
1001 oi->ivtvfb_defined.yres_virtual = oi->display_height;
1002 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
1003 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
1004 oi->ivtvfb_defined.left_margin = start_window.left + 1;
1005 oi->ivtvfb_defined.upper_margin = start_window.top + 1;
1006 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
1007 oi->ivtvfb_defined.nonstd = 0;
1009 /* We've filled in the most data, let the usual mode check
1010 routine fill in the rest. */
1011 _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
1013 /* Generate valid fb_fix_screeninfo */
1015 ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
1017 /* Generate valid fb_info */
1019 oi->ivtvfb_info.node = -1;
1020 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
1021 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1022 oi->ivtvfb_info.par = itv;
1023 oi->ivtvfb_info.var = oi->ivtvfb_defined;
1024 oi->ivtvfb_info.fix = oi->ivtvfb_fix;
1025 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
1026 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1028 /* Supply some monitor specs. Bogus values will do for now */
1029 oi->ivtvfb_info.monspecs.hfmin = 8000;
1030 oi->ivtvfb_info.monspecs.hfmax = 70000;
1031 oi->ivtvfb_info.monspecs.vfmin = 10;
1032 oi->ivtvfb_info.monspecs.vfmax = 100;
1034 /* Allocate color map */
1035 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
1036 IVTVFB_ERR("abort, unable to alloc cmap\n");
1040 /* Allocate the pseudo palette */
1041 oi->ivtvfb_info.pseudo_palette =
1042 kmalloc(sizeof(u32) * 16, GFP_KERNEL|__GFP_NOWARN);
1044 if (!oi->ivtvfb_info.pseudo_palette) {
1045 IVTVFB_ERR("abort, unable to alloc pseudo pallete\n");
1052 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
1054 static int ivtvfb_init_io(struct ivtv *itv)
1056 struct osd_info *oi = itv->osd_info;
1058 mutex_lock(&itv->serialize_lock);
1059 if (ivtv_init_on_first_open(itv)) {
1060 mutex_unlock(&itv->serialize_lock);
1061 IVTVFB_ERR("Failed to initialize ivtv\n");
1064 mutex_unlock(&itv->serialize_lock);
1066 ivtvfb_get_framebuffer(itv, &oi->video_rbase, &oi->video_buffer_size);
1068 /* The osd buffer size depends on the number of video buffers allocated
1069 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
1070 size to prevent any overlap. */
1071 oi->video_buffer_size = 1704960;
1073 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
1074 oi->video_vbase = itv->dec_mem + oi->video_rbase;
1076 if (!oi->video_vbase) {
1077 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
1078 oi->video_buffer_size, oi->video_pbase);
1082 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
1083 oi->video_pbase, oi->video_vbase,
1084 oi->video_buffer_size / 1024);
1088 /* Find the largest power of two that maps the whole buffer */
1089 int size_shift = 31;
1091 while (!(oi->video_buffer_size & (1 << size_shift))) {
1095 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
1096 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
1097 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
1098 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
1099 if (mtrr_add(oi->fb_start_aligned_physaddr,
1100 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr,
1101 MTRR_TYPE_WRCOMB, 1) < 0) {
1102 IVTVFB_INFO("disabled mttr\n");
1103 oi->fb_start_aligned_physaddr = 0;
1104 oi->fb_end_aligned_physaddr = 0;
1109 /* Blank the entire osd. */
1110 memset_io(oi->video_vbase, 0, oi->video_buffer_size);
1115 /* Release any memory we've grabbed & remove mtrr entry */
1116 static void ivtvfb_release_buffers (struct ivtv *itv)
1118 struct osd_info *oi = itv->osd_info;
1121 if (oi->ivtvfb_info.cmap.len)
1122 fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
1124 /* Release pseudo palette */
1125 if (oi->ivtvfb_info.pseudo_palette)
1126 kfree(oi->ivtvfb_info.pseudo_palette);
1129 if (oi->fb_end_aligned_physaddr) {
1130 mtrr_del(-1, oi->fb_start_aligned_physaddr,
1131 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr);
1136 itv->osd_info = NULL;
1139 /* Initialize the specified card */
1141 static int ivtvfb_init_card(struct ivtv *itv)
1145 if (itv->osd_info) {
1146 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id);
1150 itv->osd_info = kzalloc(sizeof(struct osd_info),
1151 GFP_ATOMIC|__GFP_NOWARN);
1152 if (itv->osd_info == NULL) {
1153 IVTVFB_ERR("Failed to allocate memory for osd_info\n");
1157 /* Find & setup the OSD buffer */
1158 if ((rc = ivtvfb_init_io(itv)))
1161 /* Set the startup video mode information */
1162 if ((rc = ivtvfb_init_vidmode(itv))) {
1163 ivtvfb_release_buffers(itv);
1167 /* Register the framebuffer */
1168 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
1169 ivtvfb_release_buffers(itv);
1173 itv->osd_video_pbase = itv->osd_info->video_pbase;
1175 /* Set the card to the requested mode */
1176 ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
1178 /* Set color 0 to black */
1179 write_reg(0, 0x02a30);
1180 write_reg(0, 0x02a34);
1182 /* Enable the osd */
1183 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
1186 ivtv_udma_alloc(itv);
1191 static int __init ivtvfb_init(void)
1194 int i, registered = 0;
1196 if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) {
1197 printk(KERN_ERR "ivtvfb: ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n",
1198 IVTV_MAX_CARDS - 1);
1202 /* Locate & initialise all cards supporting an OSD. */
1203 for (i = 0; i < ivtv_cards_active; i++) {
1204 if (ivtvfb_card_id != -1 && i != ivtvfb_card_id)
1206 itv = ivtv_cards[i];
1207 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
1208 if (ivtvfb_init_card(itv) == 0) {
1209 IVTVFB_INFO("Framebuffer registered on ivtv card id %d\n", i);
1215 printk(KERN_ERR "ivtvfb: no cards found");
1221 static void ivtvfb_cleanup(void)
1226 printk(KERN_INFO "ivtvfb: Unloading framebuffer module\n");
1228 for (i = 0; i < ivtv_cards_active; i++) {
1229 itv = ivtv_cards[i];
1230 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) && itv->osd_info) {
1231 if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
1232 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n", i);
1235 IVTVFB_DEBUG_INFO("Unregister framebuffer %d\n", i);
1236 ivtvfb_blank(FB_BLANK_POWERDOWN, &itv->osd_info->ivtvfb_info);
1237 ivtvfb_release_buffers(itv);
1238 itv->osd_video_pbase = 0;
1243 module_init(ivtvfb_init);
1244 module_exit(ivtvfb_cleanup);