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"
51 #include "ivtv-udma.h"
52 #include "ivtv-mailbox.h"
55 static int ivtvfb_card_id = -1;
56 static int ivtvfb_debug = 0;
64 module_param(ivtvfb_card_id, int, 0444);
65 module_param_named(debug,ivtvfb_debug, int, 0644);
66 module_param(osd_laced, bool, 0444);
67 module_param(osd_depth, int, 0444);
68 module_param(osd_upper, int, 0444);
69 module_param(osd_left, int, 0444);
70 module_param(osd_yres, int, 0444);
71 module_param(osd_xres, int, 0444);
73 MODULE_PARM_DESC(ivtvfb_card_id,
74 "Only use framebuffer of the specified ivtv card (0-31)\n"
75 "\t\t\tdefault -1: initialize all available framebuffers");
77 MODULE_PARM_DESC(debug,
78 "Debug level (bitmask). Default: errors only\n"
79 "\t\t\t(debug = 3 gives full debugging)");
81 /* Why upper, left, xres, yres, depth, laced ? To match terminology used
83 Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */
85 MODULE_PARM_DESC(osd_laced,
91 MODULE_PARM_DESC(osd_depth,
92 "Bits per pixel - 8, 16, 32\n"
95 MODULE_PARM_DESC(osd_upper,
96 "Vertical start position\n"
97 "\t\t\tdefault 0 (Centered)");
99 MODULE_PARM_DESC(osd_left,
100 "Horizontal start position\n"
101 "\t\t\tdefault 0 (Centered)");
103 MODULE_PARM_DESC(osd_yres,
105 "\t\t\tdefault 480 (PAL)\n"
106 "\t\t\t 400 (NTSC)");
108 MODULE_PARM_DESC(osd_xres,
110 "\t\t\tdefault 640");
112 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong");
113 MODULE_LICENSE("GPL");
115 /* --------------------------------------------------------------------- */
117 #define IVTVFB_DBGFLG_WARN (1 << 0)
118 #define IVTVFB_DBGFLG_INFO (1 << 1)
120 #define IVTVFB_DEBUG(x, type, fmt, args...) \
122 if ((x) & ivtvfb_debug) \
123 printk(KERN_INFO "ivtvfb%d " type ": " fmt, itv->num , ## args); \
125 #define IVTVFB_DEBUG_WARN(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_WARN, "warning", fmt , ## args)
126 #define IVTVFB_DEBUG_INFO(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_INFO, "info", fmt , ## args)
128 /* Standard kernel messages */
129 #define IVTVFB_ERR(fmt, args...) printk(KERN_ERR "ivtvfb%d: " fmt, itv->num , ## args)
130 #define IVTVFB_WARN(fmt, args...) printk(KERN_WARNING "ivtvfb%d: " fmt, itv->num , ## args)
131 #define IVTVFB_INFO(fmt, args...) printk(KERN_INFO "ivtvfb%d: " fmt, itv->num , ## args)
133 /* --------------------------------------------------------------------- */
135 #define IVTV_OSD_MAX_WIDTH 720
136 #define IVTV_OSD_MAX_HEIGHT 576
138 #define IVTV_OSD_BPP_8 0x00
139 #define IVTV_OSD_BPP_16_444 0x03
140 #define IVTV_OSD_BPP_16_555 0x02
141 #define IVTV_OSD_BPP_16_565 0x01
142 #define IVTV_OSD_BPP_32 0x04
145 /* Physical base address */
146 unsigned long video_pbase;
147 /* Relative base address (relative to start of decoder memory) */
149 /* Mapped base address */
150 volatile char __iomem *video_vbase;
152 u32 video_buffer_size;
155 /* video_base rounded down as required by hardware MTRRs */
156 unsigned long fb_start_aligned_physaddr;
157 /* video_base rounded up as required by hardware MTRRs */
158 unsigned long fb_end_aligned_physaddr;
161 /* Store the buffer offset */
162 int set_osd_coords_x;
163 int set_osd_coords_y;
165 /* Current dimensions (NOT VISIBLE SIZE!) */
168 int display_byte_stride;
170 /* Current bits per pixel */
174 /* Frame buffer stuff */
175 struct fb_info ivtvfb_info;
176 struct fb_var_screeninfo ivtvfb_defined;
177 struct fb_fix_screeninfo ivtvfb_fix;
180 struct ivtv_osd_coords {
181 unsigned long offset;
182 unsigned long max_offset;
189 /* --------------------------------------------------------------------- */
191 /* ivtv API calls for framebuffer related support */
193 static int ivtvfb_get_framebuffer(struct ivtv *itv, u32 *fbbase,
196 u32 data[CX2341X_MBOX_MAX_DATA];
199 rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0);
205 static int ivtvfb_get_osd_coords(struct ivtv *itv,
206 struct ivtv_osd_coords *osd)
208 struct osd_info *oi = itv->osd_info;
209 u32 data[CX2341X_MBOX_MAX_DATA];
211 ivtv_vapi_result(itv, data, CX2341X_OSD_GET_OSD_COORDS, 0);
213 osd->offset = data[0] - oi->video_rbase;
214 osd->max_offset = oi->display_width * oi->display_height * 4;
215 osd->pixel_stride = data[1];
216 osd->lines = data[2];
222 static int ivtvfb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords *osd)
224 struct osd_info *oi = itv->osd_info;
226 oi->display_width = osd->pixel_stride;
227 oi->display_byte_stride = osd->pixel_stride * oi->bytes_per_pixel;
228 oi->set_osd_coords_x += osd->x;
229 oi->set_osd_coords_y = osd->y;
231 return ivtv_vapi(itv, CX2341X_OSD_SET_OSD_COORDS, 5,
232 osd->offset + oi->video_rbase,
234 osd->lines, osd->x, osd->y);
237 static int ivtvfb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window)
239 int osd_height_limit = itv->is_50hz ? 576 : 480;
241 /* Only fail if resolution too high, otherwise fudge the start coords. */
242 if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH))
245 /* Ensure we don't exceed display limits */
246 if (ivtv_window->top + ivtv_window->height > osd_height_limit) {
247 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n",
248 ivtv_window->top, ivtv_window->height);
249 ivtv_window->top = osd_height_limit - ivtv_window->height;
252 if (ivtv_window->left + ivtv_window->width > IVTV_OSD_MAX_WIDTH) {
253 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n",
254 ivtv_window->left, ivtv_window->width);
255 ivtv_window->left = IVTV_OSD_MAX_WIDTH - ivtv_window->width;
258 /* Set the OSD origin */
259 write_reg((ivtv_window->top << 16) | ivtv_window->left, 0x02a04);
261 /* How much to display */
262 write_reg(((ivtv_window->top+ivtv_window->height) << 16) | (ivtv_window->left+ivtv_window->width), 0x02a08);
264 /* Pass this info back the yuv handler */
265 itv->yuv_info.osd_vis_w = ivtv_window->width;
266 itv->yuv_info.osd_vis_h = ivtv_window->height;
267 itv->yuv_info.osd_x_offset = ivtv_window->left;
268 itv->yuv_info.osd_y_offset = ivtv_window->top;
273 static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv,
274 unsigned long ivtv_dest_addr, void __user *userbuf,
280 mutex_lock(&itv->udma.lock);
282 if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
283 mutex_unlock(&itv->udma.lock);
284 IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, "
285 "Error with get_user_pages: %d bytes, %d pages returned\n",
286 size_in_bytes, itv->udma.page_count);
288 /* get_user_pages must have failed completely */
292 IVTVFB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n",
293 size_in_bytes, itv->udma.page_count);
295 ivtv_udma_prepare(itv);
296 prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
297 /* if no UDMA is pending and no UDMA is in progress, then the DMA
299 while (itv->i_flags & (IVTV_F_I_UDMA_PENDING | IVTV_F_I_UDMA)) {
300 /* don't interrupt if the DMA is in progress but break off
301 a still pending DMA. */
302 got_sig = signal_pending(current);
303 if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags))
308 finish_wait(&itv->dma_waitq, &wait);
310 /* Unmap Last DMA Xfer */
311 ivtv_udma_unmap(itv);
312 mutex_unlock(&itv->udma.lock);
314 IVTV_DEBUG_INFO("User stopped OSD\n");
321 static int ivtvfb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
322 unsigned long dest_offset, int count)
325 struct osd_info *oi = itv->osd_info;
329 IVTVFB_DEBUG_WARN("ivtvfb_prep_frame: Nothing to do. count = 0\n");
333 /* Check Total FB Size */
334 if ((dest_offset + count) > oi->video_buffer_size) {
335 IVTVFB_WARN("ivtvfb_prep_frame: Overflowing the framebuffer %ld, only %d available\n",
336 dest_offset + count, oi->video_buffer_size);
340 /* Not fatal, but will have undesirable results */
341 if ((unsigned long)source & 3)
342 IVTVFB_WARN("ivtvfb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n",
343 (unsigned long)source);
346 IVTVFB_WARN("ivtvfb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset);
349 IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count);
352 if (!access_ok(VERIFY_READ, source + dest_offset, count)) {
353 IVTVFB_WARN("Invalid userspace pointer 0x%08lx\n",
354 (unsigned long)source);
356 IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source 0x%08lx count %d\n",
357 dest_offset, (unsigned long)source,
362 /* OSD Address to send DMA to */
363 dest_offset += IVTV_DECODER_OFFSET + oi->video_rbase;
366 return ivtvfb_prep_dec_dma_to_device(itv, dest_offset, source, count);
369 static ssize_t ivtvfb_write(struct fb_info *info, const char __user *buf,
370 size_t count, loff_t *ppos)
372 unsigned long p = *ppos;
376 unsigned long total_size;
377 struct ivtv *itv = (struct ivtv *) info->par;
378 unsigned long dma_offset =
379 IVTV_DECODER_OFFSET + itv->osd_info->video_rbase;
380 unsigned long dma_size;
381 u16 lead = 0, tail = 0;
383 if (info->state != FBINFO_STATE_RUNNING)
386 total_size = info->screen_size;
389 total_size = info->fix.smem_len;
394 if (count > total_size) {
399 if (count + p > total_size) {
402 count = total_size - p;
405 dst = (void __force *) (info->screen_base + p);
407 if (info->fbops->fb_sync)
408 info->fbops->fb_sync(info);
410 /* If transfer size > threshold and both src/dst
411 addresses are aligned, use DMA */
413 ((unsigned long)buf & 3) == ((unsigned long)dst & 3)) {
414 /* Odd address = can't DMA. Align */
415 if ((unsigned long)dst & 3) {
416 lead = 4 - ((unsigned long)dst & 3);
417 if (copy_from_user(dst, buf, lead))
422 /* DMA resolution is 32 bits */
423 if ((count - lead) & 3)
424 tail = (count - lead) & 3;
426 dma_size = count - lead - tail;
427 dma_err = ivtvfb_prep_dec_dma_to_device(itv,
428 p + lead + dma_offset, (void __user *)buf, dma_size);
433 /* Copy any leftover data */
434 if (tail && copy_from_user(dst, buf, tail))
436 } else if (copy_from_user(dst, buf, count)) {
443 return (err) ? err : count;
446 static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
449 struct ivtv *itv = (struct ivtv *)info->par;
453 case FBIOGET_VBLANK: {
454 struct fb_vblank vblank;
457 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
458 FB_VBLANK_HAVE_VSYNC;
459 trace = read_reg(0x028c0) >> 16;
460 if (itv->is_50hz && trace > 312)
462 else if (itv->is_60hz && trace > 262)
465 vblank.flags |= FB_VBLANK_VSYNCING;
466 vblank.count = itv->last_vsync_field;
467 vblank.vcount = trace;
469 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
474 case FBIO_WAITFORVSYNC:
475 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
476 if (!schedule_timeout(msecs_to_jiffies(50)))
478 finish_wait(&itv->vsync_waitq, &wait);
481 case IVTVFB_IOC_DMA_FRAME: {
482 struct ivtvfb_dma_frame args;
484 IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
485 if (copy_from_user(&args, (void __user *)arg, sizeof(args)))
488 return ivtvfb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count);
492 IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd);
498 /* Framebuffer device handling */
500 static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
502 struct osd_info *oi = itv->osd_info;
503 struct ivtv_osd_coords ivtv_osd;
504 struct v4l2_rect ivtv_window;
507 IVTVFB_DEBUG_INFO("ivtvfb_set_var\n");
509 /* Select color space */
510 if (var->nonstd) /* YUV */
511 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
513 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
515 /* Set the color mode */
516 switch (var->bits_per_pixel) {
518 osd_mode = IVTV_OSD_BPP_8;
521 osd_mode = IVTV_OSD_BPP_32;
524 switch (var->green.length) {
526 osd_mode = IVTV_OSD_BPP_16_444;
529 osd_mode = IVTV_OSD_BPP_16_555;
532 osd_mode = IVTV_OSD_BPP_16_565;
535 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
539 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
542 /* Set video mode. Although rare, the display can become scrambled even
543 if we don't change mode. Always 'bounce' to osd_mode via mode 0 */
544 if (osd_mode != -1) {
545 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
546 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode);
549 oi->bits_per_pixel = var->bits_per_pixel;
550 oi->bytes_per_pixel = var->bits_per_pixel / 8;
552 /* Set the flicker filter */
553 switch (var->vmode & FB_VMODE_MASK) {
554 case FB_VMODE_NONINTERLACED: /* Filter on */
555 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1);
557 case FB_VMODE_INTERLACED: /* Filter off */
558 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0);
561 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
564 /* Read the current osd info */
565 ivtvfb_get_osd_coords(itv, &ivtv_osd);
567 /* Now set the OSD to the size we want */
568 ivtv_osd.pixel_stride = var->xres_virtual;
569 ivtv_osd.lines = var->yres_virtual;
572 ivtvfb_set_osd_coords(itv, &ivtv_osd);
574 /* Can't seem to find the right API combo for this.
575 Use another function which does what we need through direct register access. */
576 ivtv_window.width = var->xres;
577 ivtv_window.height = var->yres;
579 /* Minimum margin cannot be 0, as X won't allow such a mode */
580 if (!var->upper_margin) var->upper_margin++;
581 if (!var->left_margin) var->left_margin++;
582 ivtv_window.top = var->upper_margin - 1;
583 ivtv_window.left = var->left_margin - 1;
585 ivtvfb_set_display_window(itv, &ivtv_window);
587 /* Pass screen size back to yuv handler */
588 itv->yuv_info.osd_full_w = ivtv_osd.pixel_stride;
589 itv->yuv_info.osd_full_h = ivtv_osd.lines;
591 /* Force update of yuv registers */
592 itv->yuv_info.yuv_forced_update = 1;
594 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
595 var->xres, var->yres,
596 var->xres_virtual, var->yres_virtual,
597 var->bits_per_pixel);
599 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
600 var->left_margin, var->upper_margin);
602 IVTVFB_DEBUG_INFO("Display filter: %s\n",
603 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
604 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
609 static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix)
611 struct osd_info *oi = itv->osd_info;
613 IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n");
614 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
615 strlcpy(fix->id, "cx23415 TV out", sizeof(fix->id));
616 fix->smem_start = oi->video_pbase;
617 fix->smem_len = oi->video_buffer_size;
618 fix->type = FB_TYPE_PACKED_PIXELS;
619 fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
623 fix->line_length = oi->display_byte_stride;
624 fix->accel = FB_ACCEL_NONE;
628 /* Check the requested display mode, returning -EINVAL if we can't
631 static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
633 struct osd_info *oi = itv->osd_info;
634 int osd_height_limit;
635 u32 pixclock, hlimit, vlimit;
637 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
639 /* Set base references for mode calcs. */
644 osd_height_limit = 576;
650 osd_height_limit = 480;
653 if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) {
654 var->transp.offset = 24;
655 var->transp.length = 8;
656 var->red.offset = 16;
658 var->green.offset = 8;
659 var->green.length = 8;
660 var->blue.offset = 0;
661 var->blue.length = 8;
663 else if (var->bits_per_pixel == 16) {
664 /* To find out the true mode, check green length */
665 switch (var->green.length) {
669 var->green.offset = 4;
670 var->green.length = 4;
671 var->blue.offset = 0;
672 var->blue.length = 4;
673 var->transp.offset = 12;
674 var->transp.length = 1;
677 var->red.offset = 10;
679 var->green.offset = 5;
680 var->green.length = 5;
681 var->blue.offset = 0;
682 var->blue.length = 5;
683 var->transp.offset = 15;
684 var->transp.length = 1;
687 var->red.offset = 11;
689 var->green.offset = 5;
690 var->green.length = 6;
691 var->blue.offset = 0;
692 var->blue.length = 5;
693 var->transp.offset = 0;
694 var->transp.length = 0;
699 IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
703 /* Check the resolution */
704 if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) {
705 IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n",
706 var->xres, var->yres);
710 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
711 if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) ||
712 var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size ||
713 var->xres_virtual < var->xres ||
714 var->yres_virtual < var->yres) {
715 IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
716 var->xres_virtual, var->yres_virtual);
720 /* Some extra checks if in 8 bit mode */
721 if (var->bits_per_pixel == 8) {
722 /* Width must be a multiple of 4 */
724 IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres);
727 if (var->xres_virtual & 3) {
728 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual);
732 else if (var->bits_per_pixel == 16) {
733 /* Width must be a multiple of 2 */
735 IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres);
738 if (var->xres_virtual & 1) {
739 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual);
744 /* Now check the offsets */
745 if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) {
746 IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
747 var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual);
751 /* Check pixel format */
752 if (var->nonstd > 1) {
753 IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd);
757 /* Check video mode */
758 if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) &&
759 ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) {
760 IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK);
764 /* Check the left & upper margins
765 If the margins are too large, just center the screen
766 (enforcing margins causes too many problems) */
768 if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1) {
769 var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
771 if (var->upper_margin + var->yres > (itv->is_50hz ? 577 : 481)) {
772 var->upper_margin = 1 + (((itv->is_50hz ? 576 : 480) - var->yres) / 2);
775 /* Maintain overall 'size' for a constant refresh rate */
776 var->right_margin = hlimit - var->left_margin - var->xres;
777 var->lower_margin = vlimit - var->upper_margin - var->yres;
779 /* Fixed sync times */
783 /* Non-interlaced / interlaced mode is used to switch the OSD filter
784 on or off. Adjust the clock timings to maintain a constant
785 vertical refresh rate. */
786 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED)
787 var->pixclock = pixclock / 2;
789 var->pixclock = pixclock;
791 itv->osd_rect.width = var->xres;
792 itv->osd_rect.height = var->yres;
794 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
795 var->xres, var->yres,
796 var->xres_virtual, var->yres_virtual,
797 var->bits_per_pixel);
799 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
800 var->left_margin, var->upper_margin);
802 IVTVFB_DEBUG_INFO("Display filter: %s\n",
803 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
804 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
808 static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
810 struct ivtv *itv = (struct ivtv *) info->par;
811 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
812 return _ivtvfb_check_var(var, itv);
815 static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
818 struct ivtv *itv = (struct ivtv *) info->par;
820 osd_pan_index = (var->xoffset + (var->yoffset * var->xres_virtual))*var->bits_per_pixel/8;
821 write_reg(osd_pan_index, 0x02A0C);
823 /* Pass this info back the yuv handler */
824 itv->yuv_info.osd_x_pan = var->xoffset;
825 itv->yuv_info.osd_y_pan = var->yoffset;
826 /* Force update of yuv registers */
827 itv->yuv_info.yuv_forced_update = 1;
831 static int ivtvfb_set_par(struct fb_info *info)
834 struct ivtv *itv = (struct ivtv *) info->par;
836 IVTVFB_DEBUG_INFO("ivtvfb_set_par\n");
838 rc = ivtvfb_set_var(itv, &info->var);
839 ivtvfb_pan_display(&info->var, info);
840 ivtvfb_get_fix(itv, &info->fix);
844 static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
845 unsigned blue, unsigned transp,
846 struct fb_info *info)
849 struct ivtv *itv = (struct ivtv *)info->par;
851 if (regno >= info->cmap.len)
854 color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8);
855 if (info->var.bits_per_pixel <= 8) {
856 write_reg(regno, 0x02a30);
857 write_reg(color, 0x02a34);
863 palette = info->pseudo_palette;
864 if (info->var.bits_per_pixel == 16) {
865 switch (info->var.green.length) {
867 color = ((red & 0xf000) >> 4) |
868 ((green & 0xf000) >> 8) |
869 ((blue & 0xf000) >> 12);
872 color = ((red & 0xf800) >> 1) |
873 ((green & 0xf800) >> 6) |
874 ((blue & 0xf800) >> 11);
877 color = (red & 0xf800 ) |
878 ((green & 0xfc00) >> 5) |
879 ((blue & 0xf800) >> 11);
883 palette[regno] = color;
887 /* We don't really support blanking. All this does is enable or
889 static int ivtvfb_blank(int blank_mode, struct fb_info *info)
891 struct ivtv *itv = (struct ivtv *)info->par;
893 IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode);
894 switch (blank_mode) {
895 case FB_BLANK_UNBLANK:
896 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
898 case FB_BLANK_NORMAL:
899 case FB_BLANK_HSYNC_SUSPEND:
900 case FB_BLANK_VSYNC_SUSPEND:
901 case FB_BLANK_POWERDOWN:
902 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
908 static struct fb_ops ivtvfb_ops = {
909 .owner = THIS_MODULE,
910 .fb_write = ivtvfb_write,
911 .fb_check_var = ivtvfb_check_var,
912 .fb_set_par = ivtvfb_set_par,
913 .fb_setcolreg = ivtvfb_setcolreg,
914 .fb_fillrect = cfb_fillrect,
915 .fb_copyarea = cfb_copyarea,
916 .fb_imageblit = cfb_imageblit,
918 .fb_ioctl = ivtvfb_ioctl,
919 .fb_pan_display = ivtvfb_pan_display,
920 .fb_blank = ivtvfb_blank,
926 /* Setup our initial video mode */
927 static int ivtvfb_init_vidmode(struct ivtv *itv)
929 struct osd_info *oi = itv->osd_info;
930 struct v4l2_rect start_window;
935 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32)
937 oi->bits_per_pixel = osd_depth;
938 oi->bytes_per_pixel = oi->bits_per_pixel / 8;
940 /* Horizontal size & position */
945 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
948 else if (osd_depth == 16)
951 start_window.width = osd_xres ? osd_xres : 640;
953 /* Check horizontal start (osd_left). */
954 if (osd_left && osd_left + start_window.width > 721) {
955 IVTVFB_ERR("Invalid osd_left - assuming default\n");
959 /* Hardware coords start at 0, user coords start at 1. */
962 start_window.left = osd_left >= 0 ? osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
964 oi->display_byte_stride =
965 start_window.width * oi->bytes_per_pixel;
967 /* Vertical size & position */
969 max_height = itv->is_50hz ? 576 : 480;
971 if (osd_yres > max_height)
972 osd_yres = max_height;
974 start_window.height = osd_yres ? osd_yres : itv->is_50hz ? 480 : 400;
976 /* Check vertical start (osd_upper). */
977 if (osd_upper + start_window.height > max_height + 1) {
978 IVTVFB_ERR("Invalid osd_upper - assuming default\n");
982 /* Hardware coords start at 0, user coords start at 1. */
985 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
987 oi->display_width = start_window.width;
988 oi->display_height = start_window.height;
990 /* Generate a valid fb_var_screeninfo */
992 oi->ivtvfb_defined.xres = oi->display_width;
993 oi->ivtvfb_defined.yres = oi->display_height;
994 oi->ivtvfb_defined.xres_virtual = oi->display_width;
995 oi->ivtvfb_defined.yres_virtual = oi->display_height;
996 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
997 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
998 oi->ivtvfb_defined.left_margin = start_window.left + 1;
999 oi->ivtvfb_defined.upper_margin = start_window.top + 1;
1000 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
1001 oi->ivtvfb_defined.nonstd = 0;
1003 /* We've filled in the most data, let the usual mode check
1004 routine fill in the rest. */
1005 _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
1007 /* Generate valid fb_fix_screeninfo */
1009 ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
1011 /* Generate valid fb_info */
1013 oi->ivtvfb_info.node = -1;
1014 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
1015 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1016 oi->ivtvfb_info.par = itv;
1017 oi->ivtvfb_info.var = oi->ivtvfb_defined;
1018 oi->ivtvfb_info.fix = oi->ivtvfb_fix;
1019 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
1020 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1022 /* Supply some monitor specs. Bogus values will do for now */
1023 oi->ivtvfb_info.monspecs.hfmin = 8000;
1024 oi->ivtvfb_info.monspecs.hfmax = 70000;
1025 oi->ivtvfb_info.monspecs.vfmin = 10;
1026 oi->ivtvfb_info.monspecs.vfmax = 100;
1028 /* Allocate color map */
1029 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
1030 IVTVFB_ERR("abort, unable to alloc cmap\n");
1034 /* Allocate the pseudo palette */
1035 oi->ivtvfb_info.pseudo_palette =
1036 kmalloc(sizeof(u32) * 16, GFP_KERNEL|__GFP_NOWARN);
1038 if (!oi->ivtvfb_info.pseudo_palette) {
1039 IVTVFB_ERR("abort, unable to alloc pseudo pallete\n");
1046 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
1048 static int ivtvfb_init_io(struct ivtv *itv)
1050 struct osd_info *oi = itv->osd_info;
1052 mutex_lock(&itv->serialize_lock);
1053 if (ivtv_init_on_first_open(itv)) {
1054 mutex_unlock(&itv->serialize_lock);
1055 IVTVFB_ERR("Failed to initialize ivtv\n");
1058 mutex_unlock(&itv->serialize_lock);
1060 ivtvfb_get_framebuffer(itv, &oi->video_rbase, &oi->video_buffer_size);
1062 /* The osd buffer size depends on the number of video buffers allocated
1063 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
1064 size to prevent any overlap. */
1065 oi->video_buffer_size = 1704960;
1067 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
1068 oi->video_vbase = itv->dec_mem + oi->video_rbase;
1070 if (!oi->video_vbase) {
1071 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
1072 oi->video_buffer_size, oi->video_pbase);
1076 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
1077 oi->video_pbase, oi->video_vbase,
1078 oi->video_buffer_size / 1024);
1082 /* Find the largest power of two that maps the whole buffer */
1083 int size_shift = 31;
1085 while (!(oi->video_buffer_size & (1 << size_shift))) {
1089 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
1090 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
1091 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
1092 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
1093 if (mtrr_add(oi->fb_start_aligned_physaddr,
1094 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr,
1095 MTRR_TYPE_WRCOMB, 1) < 0) {
1096 IVTVFB_INFO("disabled mttr\n");
1097 oi->fb_start_aligned_physaddr = 0;
1098 oi->fb_end_aligned_physaddr = 0;
1103 /* Blank the entire osd. */
1104 memset_io(oi->video_vbase, 0, oi->video_buffer_size);
1109 /* Release any memory we've grabbed & remove mtrr entry */
1110 static void ivtvfb_release_buffers (struct ivtv *itv)
1112 struct osd_info *oi = itv->osd_info;
1115 if (oi->ivtvfb_info.cmap.len)
1116 fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
1118 /* Release pseudo palette */
1119 if (oi->ivtvfb_info.pseudo_palette)
1120 kfree(oi->ivtvfb_info.pseudo_palette);
1123 if (oi->fb_end_aligned_physaddr) {
1124 mtrr_del(-1, oi->fb_start_aligned_physaddr,
1125 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr);
1130 itv->osd_info = NULL;
1133 /* Initialize the specified card */
1135 static int ivtvfb_init_card(struct ivtv *itv)
1139 if (itv->osd_info) {
1140 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id);
1144 itv->osd_info = kzalloc(sizeof(struct osd_info),
1145 GFP_ATOMIC|__GFP_NOWARN);
1146 if (itv->osd_info == NULL) {
1147 IVTVFB_ERR("Failed to allocate memory for osd_info\n");
1151 /* Find & setup the OSD buffer */
1152 if ((rc = ivtvfb_init_io(itv)))
1155 /* Set the startup video mode information */
1156 if ((rc = ivtvfb_init_vidmode(itv))) {
1157 ivtvfb_release_buffers(itv);
1161 /* Register the framebuffer */
1162 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
1163 ivtvfb_release_buffers(itv);
1167 itv->osd_video_pbase = itv->osd_info->video_pbase;
1169 /* Set the card to the requested mode */
1170 ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
1172 /* Set color 0 to black */
1173 write_reg(0, 0x02a30);
1174 write_reg(0, 0x02a34);
1176 /* Enable the osd */
1177 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
1180 ivtv_udma_alloc(itv);
1185 static int __init ivtvfb_init(void)
1188 int i, registered = 0;
1190 if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) {
1191 printk(KERN_ERR "ivtvfb: ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n",
1192 IVTV_MAX_CARDS - 1);
1196 /* Locate & initialise all cards supporting an OSD. */
1197 for (i = 0; i < ivtv_cards_active; i++) {
1198 if (ivtvfb_card_id != -1 && i != ivtvfb_card_id)
1200 itv = ivtv_cards[i];
1201 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
1202 if (ivtvfb_init_card(itv) == 0) {
1203 IVTVFB_INFO("Framebuffer registered on ivtv card id %d\n", i);
1209 printk(KERN_ERR "ivtvfb: no cards found");
1215 static void ivtvfb_cleanup(void)
1220 printk(KERN_INFO "ivtvfb: Unloading framebuffer module\n");
1222 for (i = 0; i < ivtv_cards_active; i++) {
1223 itv = ivtv_cards[i];
1224 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) && itv->osd_info) {
1225 if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
1226 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n", i);
1229 IVTVFB_DEBUG_INFO("Unregister framebuffer %d\n", i);
1230 ivtvfb_blank(FB_BLANK_POWERDOWN, &itv->osd_info->ivtvfb_info);
1231 ivtvfb_release_buffers(itv);
1232 itv->osd_video_pbase = 0;
1237 module_init(ivtvfb_init);
1238 module_exit(ivtvfb_cleanup);