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-cards.h"
53 #include "ivtv-udma.h"
54 #include "ivtv-mailbox.h"
57 static int ivtvfb_card_id = -1;
58 static int ivtvfb_debug = 0;
66 module_param(ivtvfb_card_id, int, 0444);
67 module_param_named(debug,ivtvfb_debug, int, 0644);
68 module_param(osd_laced, 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);
75 MODULE_PARM_DESC(ivtvfb_card_id,
76 "Only use framebuffer of the specified ivtv card (0-31)\n"
77 "\t\t\tdefault -1: initialize all available framebuffers");
79 MODULE_PARM_DESC(debug,
80 "Debug level (bitmask). Default: errors only\n"
81 "\t\t\t(debug = 3 gives full debugging)");
83 /* Why upper, left, xres, yres, depth, laced ? To match terminology used
85 Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */
87 MODULE_PARM_DESC(osd_laced,
93 MODULE_PARM_DESC(osd_depth,
94 "Bits per pixel - 8, 16, 32\n"
97 MODULE_PARM_DESC(osd_upper,
98 "Vertical start position\n"
99 "\t\t\tdefault 0 (Centered)");
101 MODULE_PARM_DESC(osd_left,
102 "Horizontal start position\n"
103 "\t\t\tdefault 0 (Centered)");
105 MODULE_PARM_DESC(osd_yres,
107 "\t\t\tdefault 480 (PAL)\n"
108 "\t\t\t 400 (NTSC)");
110 MODULE_PARM_DESC(osd_xres,
112 "\t\t\tdefault 640");
114 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong");
115 MODULE_LICENSE("GPL");
117 /* --------------------------------------------------------------------- */
119 #define IVTVFB_DBGFLG_WARN (1 << 0)
120 #define IVTVFB_DBGFLG_INFO (1 << 1)
122 #define IVTVFB_DEBUG(x, type, fmt, args...) \
124 if ((x) & ivtvfb_debug) \
125 printk(KERN_INFO "ivtvfb%d " type ": " fmt, itv->instance , ## args); \
127 #define IVTVFB_DEBUG_WARN(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_WARN, "warning", fmt , ## args)
128 #define IVTVFB_DEBUG_INFO(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_INFO, "info", fmt , ## args)
130 /* Standard kernel messages */
131 #define IVTVFB_ERR(fmt, args...) printk(KERN_ERR "ivtvfb%d: " fmt, itv->instance , ## args)
132 #define IVTVFB_WARN(fmt, args...) printk(KERN_WARNING "ivtvfb%d: " fmt, itv->instance , ## args)
133 #define IVTVFB_INFO(fmt, args...) printk(KERN_INFO "ivtvfb%d: " fmt, itv->instance , ## args)
135 /* --------------------------------------------------------------------- */
137 #define IVTV_OSD_MAX_WIDTH 720
138 #define IVTV_OSD_MAX_HEIGHT 576
140 #define IVTV_OSD_BPP_8 0x00
141 #define IVTV_OSD_BPP_16_444 0x03
142 #define IVTV_OSD_BPP_16_555 0x02
143 #define IVTV_OSD_BPP_16_565 0x01
144 #define IVTV_OSD_BPP_32 0x04
147 /* Physical base address */
148 unsigned long video_pbase;
149 /* Relative base address (relative to start of decoder memory) */
151 /* Mapped base address */
152 volatile char __iomem *video_vbase;
154 u32 video_buffer_size;
157 /* video_base rounded down as required by hardware MTRRs */
158 unsigned long fb_start_aligned_physaddr;
159 /* video_base rounded up as required by hardware MTRRs */
160 unsigned long fb_end_aligned_physaddr;
163 /* Store the buffer offset */
164 int set_osd_coords_x;
165 int set_osd_coords_y;
167 /* Current dimensions (NOT VISIBLE SIZE!) */
170 int display_byte_stride;
172 /* Current bits per pixel */
176 /* Frame buffer stuff */
177 struct fb_info ivtvfb_info;
178 struct fb_var_screeninfo ivtvfb_defined;
179 struct fb_fix_screeninfo ivtvfb_fix;
182 struct ivtv_osd_coords {
183 unsigned long offset;
184 unsigned long max_offset;
191 /* --------------------------------------------------------------------- */
193 /* ivtv API calls for framebuffer related support */
195 static int ivtvfb_get_framebuffer(struct ivtv *itv, u32 *fbbase,
198 u32 data[CX2341X_MBOX_MAX_DATA];
201 rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0);
207 static int ivtvfb_get_osd_coords(struct ivtv *itv,
208 struct ivtv_osd_coords *osd)
210 struct osd_info *oi = itv->osd_info;
211 u32 data[CX2341X_MBOX_MAX_DATA];
213 ivtv_vapi_result(itv, data, CX2341X_OSD_GET_OSD_COORDS, 0);
215 osd->offset = data[0] - oi->video_rbase;
216 osd->max_offset = oi->display_width * oi->display_height * 4;
217 osd->pixel_stride = data[1];
218 osd->lines = data[2];
224 static int ivtvfb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords *osd)
226 struct osd_info *oi = itv->osd_info;
228 oi->display_width = osd->pixel_stride;
229 oi->display_byte_stride = osd->pixel_stride * oi->bytes_per_pixel;
230 oi->set_osd_coords_x += osd->x;
231 oi->set_osd_coords_y = osd->y;
233 return ivtv_vapi(itv, CX2341X_OSD_SET_OSD_COORDS, 5,
234 osd->offset + oi->video_rbase,
236 osd->lines, osd->x, osd->y);
239 static int ivtvfb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window)
241 int osd_height_limit = itv->is_50hz ? 576 : 480;
243 /* Only fail if resolution too high, otherwise fudge the start coords. */
244 if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH))
247 /* Ensure we don't exceed display limits */
248 if (ivtv_window->top + ivtv_window->height > osd_height_limit) {
249 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n",
250 ivtv_window->top, ivtv_window->height);
251 ivtv_window->top = osd_height_limit - ivtv_window->height;
254 if (ivtv_window->left + ivtv_window->width > IVTV_OSD_MAX_WIDTH) {
255 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n",
256 ivtv_window->left, ivtv_window->width);
257 ivtv_window->left = IVTV_OSD_MAX_WIDTH - ivtv_window->width;
260 /* Set the OSD origin */
261 write_reg((ivtv_window->top << 16) | ivtv_window->left, 0x02a04);
263 /* How much to display */
264 write_reg(((ivtv_window->top+ivtv_window->height) << 16) | (ivtv_window->left+ivtv_window->width), 0x02a08);
266 /* Pass this info back the yuv handler */
267 itv->yuv_info.osd_vis_w = ivtv_window->width;
268 itv->yuv_info.osd_vis_h = ivtv_window->height;
269 itv->yuv_info.osd_x_offset = ivtv_window->left;
270 itv->yuv_info.osd_y_offset = ivtv_window->top;
275 static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv,
276 unsigned long ivtv_dest_addr, void __user *userbuf,
282 mutex_lock(&itv->udma.lock);
284 if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
285 mutex_unlock(&itv->udma.lock);
286 IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, "
287 "Error with get_user_pages: %d bytes, %d pages returned\n",
288 size_in_bytes, itv->udma.page_count);
290 /* get_user_pages must have failed completely */
294 IVTVFB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n",
295 size_in_bytes, itv->udma.page_count);
297 ivtv_udma_prepare(itv);
298 prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
299 /* if no UDMA is pending and no UDMA is in progress, then the DMA
301 while (itv->i_flags & (IVTV_F_I_UDMA_PENDING | IVTV_F_I_UDMA)) {
302 /* don't interrupt if the DMA is in progress but break off
303 a still pending DMA. */
304 got_sig = signal_pending(current);
305 if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags))
310 finish_wait(&itv->dma_waitq, &wait);
312 /* Unmap Last DMA Xfer */
313 ivtv_udma_unmap(itv);
314 mutex_unlock(&itv->udma.lock);
316 IVTV_DEBUG_INFO("User stopped OSD\n");
323 static int ivtvfb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
324 unsigned long dest_offset, int count)
327 struct osd_info *oi = itv->osd_info;
331 IVTVFB_DEBUG_WARN("ivtvfb_prep_frame: Nothing to do. count = 0\n");
335 /* Check Total FB Size */
336 if ((dest_offset + count) > oi->video_buffer_size) {
337 IVTVFB_WARN("ivtvfb_prep_frame: Overflowing the framebuffer %ld, only %d available\n",
338 dest_offset + count, oi->video_buffer_size);
342 /* Not fatal, but will have undesirable results */
343 if ((unsigned long)source & 3)
344 IVTVFB_WARN("ivtvfb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n",
345 (unsigned long)source);
348 IVTVFB_WARN("ivtvfb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset);
351 IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count);
354 if (!access_ok(VERIFY_READ, source + dest_offset, count)) {
355 IVTVFB_WARN("Invalid userspace pointer 0x%08lx\n",
356 (unsigned long)source);
358 IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source 0x%08lx count %d\n",
359 dest_offset, (unsigned long)source,
364 /* OSD Address to send DMA to */
365 dest_offset += IVTV_DECODER_OFFSET + oi->video_rbase;
368 return ivtvfb_prep_dec_dma_to_device(itv, dest_offset, source, count);
371 static ssize_t ivtvfb_write(struct fb_info *info, const char __user *buf,
372 size_t count, loff_t *ppos)
374 unsigned long p = *ppos;
378 unsigned long total_size;
379 struct ivtv *itv = (struct ivtv *) info->par;
380 unsigned long dma_offset =
381 IVTV_DECODER_OFFSET + itv->osd_info->video_rbase;
382 unsigned long dma_size;
383 u16 lead = 0, tail = 0;
385 if (info->state != FBINFO_STATE_RUNNING)
388 total_size = info->screen_size;
391 total_size = info->fix.smem_len;
396 if (count > total_size) {
401 if (count + p > total_size) {
404 count = total_size - p;
407 dst = (void __force *) (info->screen_base + p);
409 if (info->fbops->fb_sync)
410 info->fbops->fb_sync(info);
412 /* If transfer size > threshold and both src/dst
413 addresses are aligned, use DMA */
415 ((unsigned long)buf & 3) == ((unsigned long)dst & 3)) {
416 /* Odd address = can't DMA. Align */
417 if ((unsigned long)dst & 3) {
418 lead = 4 - ((unsigned long)dst & 3);
419 if (copy_from_user(dst, buf, lead))
424 /* DMA resolution is 32 bits */
425 if ((count - lead) & 3)
426 tail = (count - lead) & 3;
428 dma_size = count - lead - tail;
429 dma_err = ivtvfb_prep_dec_dma_to_device(itv,
430 p + lead + dma_offset, (void __user *)buf, dma_size);
435 /* Copy any leftover data */
436 if (tail && copy_from_user(dst, buf, tail))
438 } else if (copy_from_user(dst, buf, count)) {
445 return (err) ? err : count;
448 static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
451 struct ivtv *itv = (struct ivtv *)info->par;
455 case FBIOGET_VBLANK: {
456 struct fb_vblank vblank;
459 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
460 FB_VBLANK_HAVE_VSYNC;
461 trace = read_reg(0x028c0) >> 16;
462 if (itv->is_50hz && trace > 312)
464 else if (itv->is_60hz && trace > 262)
467 vblank.flags |= FB_VBLANK_VSYNCING;
468 vblank.count = itv->last_vsync_field;
469 vblank.vcount = trace;
471 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
476 case FBIO_WAITFORVSYNC:
477 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
478 if (!schedule_timeout(msecs_to_jiffies(50)))
480 finish_wait(&itv->vsync_waitq, &wait);
483 case IVTVFB_IOC_DMA_FRAME: {
484 struct ivtvfb_dma_frame args;
486 IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
487 if (copy_from_user(&args, (void __user *)arg, sizeof(args)))
490 return ivtvfb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count);
494 IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd);
500 /* Framebuffer device handling */
502 static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
504 struct osd_info *oi = itv->osd_info;
505 struct ivtv_osd_coords ivtv_osd;
506 struct v4l2_rect ivtv_window;
509 IVTVFB_DEBUG_INFO("ivtvfb_set_var\n");
511 /* Select color space */
512 if (var->nonstd) /* YUV */
513 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
515 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
517 /* Set the color mode */
518 switch (var->bits_per_pixel) {
520 osd_mode = IVTV_OSD_BPP_8;
523 osd_mode = IVTV_OSD_BPP_32;
526 switch (var->green.length) {
528 osd_mode = IVTV_OSD_BPP_16_444;
531 osd_mode = IVTV_OSD_BPP_16_555;
534 osd_mode = IVTV_OSD_BPP_16_565;
537 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
541 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
544 /* Set video mode. Although rare, the display can become scrambled even
545 if we don't change mode. Always 'bounce' to osd_mode via mode 0 */
546 if (osd_mode != -1) {
547 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
548 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode);
551 oi->bits_per_pixel = var->bits_per_pixel;
552 oi->bytes_per_pixel = var->bits_per_pixel / 8;
554 /* Set the flicker filter */
555 switch (var->vmode & FB_VMODE_MASK) {
556 case FB_VMODE_NONINTERLACED: /* Filter on */
557 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1);
559 case FB_VMODE_INTERLACED: /* Filter off */
560 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0);
563 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
566 /* Read the current osd info */
567 ivtvfb_get_osd_coords(itv, &ivtv_osd);
569 /* Now set the OSD to the size we want */
570 ivtv_osd.pixel_stride = var->xres_virtual;
571 ivtv_osd.lines = var->yres_virtual;
574 ivtvfb_set_osd_coords(itv, &ivtv_osd);
576 /* Can't seem to find the right API combo for this.
577 Use another function which does what we need through direct register access. */
578 ivtv_window.width = var->xres;
579 ivtv_window.height = var->yres;
581 /* Minimum margin cannot be 0, as X won't allow such a mode */
582 if (!var->upper_margin) var->upper_margin++;
583 if (!var->left_margin) var->left_margin++;
584 ivtv_window.top = var->upper_margin - 1;
585 ivtv_window.left = var->left_margin - 1;
587 ivtvfb_set_display_window(itv, &ivtv_window);
589 /* Pass screen size back to yuv handler */
590 itv->yuv_info.osd_full_w = ivtv_osd.pixel_stride;
591 itv->yuv_info.osd_full_h = ivtv_osd.lines;
593 /* Force update of yuv registers */
594 itv->yuv_info.yuv_forced_update = 1;
596 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
597 var->xres, var->yres,
598 var->xres_virtual, var->yres_virtual,
599 var->bits_per_pixel);
601 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
602 var->left_margin, var->upper_margin);
604 IVTVFB_DEBUG_INFO("Display filter: %s\n",
605 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
606 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
611 static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix)
613 struct osd_info *oi = itv->osd_info;
615 IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n");
616 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
617 strlcpy(fix->id, "cx23415 TV out", sizeof(fix->id));
618 fix->smem_start = oi->video_pbase;
619 fix->smem_len = oi->video_buffer_size;
620 fix->type = FB_TYPE_PACKED_PIXELS;
621 fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
625 fix->line_length = oi->display_byte_stride;
626 fix->accel = FB_ACCEL_NONE;
630 /* Check the requested display mode, returning -EINVAL if we can't
633 static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
635 struct osd_info *oi = itv->osd_info;
636 int osd_height_limit;
637 u32 pixclock, hlimit, vlimit;
639 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
641 /* Set base references for mode calcs. */
646 osd_height_limit = 576;
652 osd_height_limit = 480;
655 if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) {
656 var->transp.offset = 24;
657 var->transp.length = 8;
658 var->red.offset = 16;
660 var->green.offset = 8;
661 var->green.length = 8;
662 var->blue.offset = 0;
663 var->blue.length = 8;
665 else if (var->bits_per_pixel == 16) {
666 /* To find out the true mode, check green length */
667 switch (var->green.length) {
671 var->green.offset = 4;
672 var->green.length = 4;
673 var->blue.offset = 0;
674 var->blue.length = 4;
675 var->transp.offset = 12;
676 var->transp.length = 1;
679 var->red.offset = 10;
681 var->green.offset = 5;
682 var->green.length = 5;
683 var->blue.offset = 0;
684 var->blue.length = 5;
685 var->transp.offset = 15;
686 var->transp.length = 1;
689 var->red.offset = 11;
691 var->green.offset = 5;
692 var->green.length = 6;
693 var->blue.offset = 0;
694 var->blue.length = 5;
695 var->transp.offset = 0;
696 var->transp.length = 0;
701 IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
705 /* Check the resolution */
706 if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) {
707 IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n",
708 var->xres, var->yres);
712 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
713 if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) ||
714 var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size ||
715 var->xres_virtual < var->xres ||
716 var->yres_virtual < var->yres) {
717 IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
718 var->xres_virtual, var->yres_virtual);
722 /* Some extra checks if in 8 bit mode */
723 if (var->bits_per_pixel == 8) {
724 /* Width must be a multiple of 4 */
726 IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres);
729 if (var->xres_virtual & 3) {
730 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual);
734 else if (var->bits_per_pixel == 16) {
735 /* Width must be a multiple of 2 */
737 IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres);
740 if (var->xres_virtual & 1) {
741 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual);
746 /* Now check the offsets */
747 if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) {
748 IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
749 var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual);
753 /* Check pixel format */
754 if (var->nonstd > 1) {
755 IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd);
759 /* Check video mode */
760 if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) &&
761 ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) {
762 IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK);
766 /* Check the left & upper margins
767 If the margins are too large, just center the screen
768 (enforcing margins causes too many problems) */
770 if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1) {
771 var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
773 if (var->upper_margin + var->yres > (itv->is_50hz ? 577 : 481)) {
774 var->upper_margin = 1 + (((itv->is_50hz ? 576 : 480) - var->yres) / 2);
777 /* Maintain overall 'size' for a constant refresh rate */
778 var->right_margin = hlimit - var->left_margin - var->xres;
779 var->lower_margin = vlimit - var->upper_margin - var->yres;
781 /* Fixed sync times */
785 /* Non-interlaced / interlaced mode is used to switch the OSD filter
786 on or off. Adjust the clock timings to maintain a constant
787 vertical refresh rate. */
788 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED)
789 var->pixclock = pixclock / 2;
791 var->pixclock = pixclock;
793 itv->osd_rect.width = var->xres;
794 itv->osd_rect.height = var->yres;
796 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
797 var->xres, var->yres,
798 var->xres_virtual, var->yres_virtual,
799 var->bits_per_pixel);
801 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
802 var->left_margin, var->upper_margin);
804 IVTVFB_DEBUG_INFO("Display filter: %s\n",
805 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
806 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
810 static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
812 struct ivtv *itv = (struct ivtv *) info->par;
813 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
814 return _ivtvfb_check_var(var, itv);
817 static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
820 struct ivtv *itv = (struct ivtv *) info->par;
822 osd_pan_index = (var->xoffset + (var->yoffset * var->xres_virtual))*var->bits_per_pixel/8;
823 write_reg(osd_pan_index, 0x02A0C);
825 /* Pass this info back the yuv handler */
826 itv->yuv_info.osd_x_pan = var->xoffset;
827 itv->yuv_info.osd_y_pan = var->yoffset;
828 /* Force update of yuv registers */
829 itv->yuv_info.yuv_forced_update = 1;
833 static int ivtvfb_set_par(struct fb_info *info)
836 struct ivtv *itv = (struct ivtv *) info->par;
838 IVTVFB_DEBUG_INFO("ivtvfb_set_par\n");
840 rc = ivtvfb_set_var(itv, &info->var);
841 ivtvfb_pan_display(&info->var, info);
842 ivtvfb_get_fix(itv, &info->fix);
846 static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
847 unsigned blue, unsigned transp,
848 struct fb_info *info)
851 struct ivtv *itv = (struct ivtv *)info->par;
853 if (regno >= info->cmap.len)
856 color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8);
857 if (info->var.bits_per_pixel <= 8) {
858 write_reg(regno, 0x02a30);
859 write_reg(color, 0x02a34);
865 palette = info->pseudo_palette;
866 if (info->var.bits_per_pixel == 16) {
867 switch (info->var.green.length) {
869 color = ((red & 0xf000) >> 4) |
870 ((green & 0xf000) >> 8) |
871 ((blue & 0xf000) >> 12);
874 color = ((red & 0xf800) >> 1) |
875 ((green & 0xf800) >> 6) |
876 ((blue & 0xf800) >> 11);
879 color = (red & 0xf800 ) |
880 ((green & 0xfc00) >> 5) |
881 ((blue & 0xf800) >> 11);
885 palette[regno] = color;
889 /* We don't really support blanking. All this does is enable or
891 static int ivtvfb_blank(int blank_mode, struct fb_info *info)
893 struct ivtv *itv = (struct ivtv *)info->par;
895 IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode);
896 switch (blank_mode) {
897 case FB_BLANK_UNBLANK:
898 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
899 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
901 case FB_BLANK_NORMAL:
902 case FB_BLANK_HSYNC_SUSPEND:
903 case FB_BLANK_VSYNC_SUSPEND:
904 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
905 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
907 case FB_BLANK_POWERDOWN:
908 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0);
909 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
915 static struct fb_ops ivtvfb_ops = {
916 .owner = THIS_MODULE,
917 .fb_write = ivtvfb_write,
918 .fb_check_var = ivtvfb_check_var,
919 .fb_set_par = ivtvfb_set_par,
920 .fb_setcolreg = ivtvfb_setcolreg,
921 .fb_fillrect = cfb_fillrect,
922 .fb_copyarea = cfb_copyarea,
923 .fb_imageblit = cfb_imageblit,
925 .fb_ioctl = ivtvfb_ioctl,
926 .fb_pan_display = ivtvfb_pan_display,
927 .fb_blank = ivtvfb_blank,
933 /* Setup our initial video mode */
934 static int ivtvfb_init_vidmode(struct ivtv *itv)
936 struct osd_info *oi = itv->osd_info;
937 struct v4l2_rect start_window;
942 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32)
944 oi->bits_per_pixel = osd_depth;
945 oi->bytes_per_pixel = oi->bits_per_pixel / 8;
947 /* Horizontal size & position */
952 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
955 else if (osd_depth == 16)
958 start_window.width = osd_xres ? osd_xres : 640;
960 /* Check horizontal start (osd_left). */
961 if (osd_left && osd_left + start_window.width > 721) {
962 IVTVFB_ERR("Invalid osd_left - assuming default\n");
966 /* Hardware coords start at 0, user coords start at 1. */
969 start_window.left = osd_left >= 0 ? osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
971 oi->display_byte_stride =
972 start_window.width * oi->bytes_per_pixel;
974 /* Vertical size & position */
976 max_height = itv->is_50hz ? 576 : 480;
978 if (osd_yres > max_height)
979 osd_yres = max_height;
981 start_window.height = osd_yres ? osd_yres : itv->is_50hz ? 480 : 400;
983 /* Check vertical start (osd_upper). */
984 if (osd_upper + start_window.height > max_height + 1) {
985 IVTVFB_ERR("Invalid osd_upper - assuming default\n");
989 /* Hardware coords start at 0, user coords start at 1. */
992 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
994 oi->display_width = start_window.width;
995 oi->display_height = start_window.height;
997 /* Generate a valid fb_var_screeninfo */
999 oi->ivtvfb_defined.xres = oi->display_width;
1000 oi->ivtvfb_defined.yres = oi->display_height;
1001 oi->ivtvfb_defined.xres_virtual = oi->display_width;
1002 oi->ivtvfb_defined.yres_virtual = oi->display_height;
1003 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
1004 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
1005 oi->ivtvfb_defined.left_margin = start_window.left + 1;
1006 oi->ivtvfb_defined.upper_margin = start_window.top + 1;
1007 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
1008 oi->ivtvfb_defined.nonstd = 0;
1010 /* We've filled in the most data, let the usual mode check
1011 routine fill in the rest. */
1012 _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
1014 /* Generate valid fb_fix_screeninfo */
1016 ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
1018 /* Generate valid fb_info */
1020 oi->ivtvfb_info.node = -1;
1021 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
1022 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1023 oi->ivtvfb_info.par = itv;
1024 oi->ivtvfb_info.var = oi->ivtvfb_defined;
1025 oi->ivtvfb_info.fix = oi->ivtvfb_fix;
1026 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
1027 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1029 /* Supply some monitor specs. Bogus values will do for now */
1030 oi->ivtvfb_info.monspecs.hfmin = 8000;
1031 oi->ivtvfb_info.monspecs.hfmax = 70000;
1032 oi->ivtvfb_info.monspecs.vfmin = 10;
1033 oi->ivtvfb_info.monspecs.vfmax = 100;
1035 /* Allocate color map */
1036 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
1037 IVTVFB_ERR("abort, unable to alloc cmap\n");
1041 /* Allocate the pseudo palette */
1042 oi->ivtvfb_info.pseudo_palette =
1043 kmalloc(sizeof(u32) * 16, GFP_KERNEL|__GFP_NOWARN);
1045 if (!oi->ivtvfb_info.pseudo_palette) {
1046 IVTVFB_ERR("abort, unable to alloc pseudo pallete\n");
1053 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
1055 static int ivtvfb_init_io(struct ivtv *itv)
1057 struct osd_info *oi = itv->osd_info;
1059 mutex_lock(&itv->serialize_lock);
1060 if (ivtv_init_on_first_open(itv)) {
1061 mutex_unlock(&itv->serialize_lock);
1062 IVTVFB_ERR("Failed to initialize ivtv\n");
1065 mutex_unlock(&itv->serialize_lock);
1067 ivtvfb_get_framebuffer(itv, &oi->video_rbase, &oi->video_buffer_size);
1069 /* The osd buffer size depends on the number of video buffers allocated
1070 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
1071 size to prevent any overlap. */
1072 oi->video_buffer_size = 1704960;
1074 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
1075 oi->video_vbase = itv->dec_mem + oi->video_rbase;
1077 if (!oi->video_vbase) {
1078 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
1079 oi->video_buffer_size, oi->video_pbase);
1083 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
1084 oi->video_pbase, oi->video_vbase,
1085 oi->video_buffer_size / 1024);
1089 /* Find the largest power of two that maps the whole buffer */
1090 int size_shift = 31;
1092 while (!(oi->video_buffer_size & (1 << size_shift))) {
1096 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
1097 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
1098 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
1099 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
1100 if (mtrr_add(oi->fb_start_aligned_physaddr,
1101 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr,
1102 MTRR_TYPE_WRCOMB, 1) < 0) {
1103 IVTVFB_INFO("disabled mttr\n");
1104 oi->fb_start_aligned_physaddr = 0;
1105 oi->fb_end_aligned_physaddr = 0;
1110 /* Blank the entire osd. */
1111 memset_io(oi->video_vbase, 0, oi->video_buffer_size);
1116 /* Release any memory we've grabbed & remove mtrr entry */
1117 static void ivtvfb_release_buffers (struct ivtv *itv)
1119 struct osd_info *oi = itv->osd_info;
1122 if (oi->ivtvfb_info.cmap.len)
1123 fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
1125 /* Release pseudo palette */
1126 if (oi->ivtvfb_info.pseudo_palette)
1127 kfree(oi->ivtvfb_info.pseudo_palette);
1130 if (oi->fb_end_aligned_physaddr) {
1131 mtrr_del(-1, oi->fb_start_aligned_physaddr,
1132 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr);
1137 itv->osd_info = NULL;
1140 /* Initialize the specified card */
1142 static int ivtvfb_init_card(struct ivtv *itv)
1146 if (itv->osd_info) {
1147 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id);
1151 itv->osd_info = kzalloc(sizeof(struct osd_info),
1152 GFP_ATOMIC|__GFP_NOWARN);
1153 if (itv->osd_info == NULL) {
1154 IVTVFB_ERR("Failed to allocate memory for osd_info\n");
1158 /* Find & setup the OSD buffer */
1159 if ((rc = ivtvfb_init_io(itv)))
1162 /* Set the startup video mode information */
1163 if ((rc = ivtvfb_init_vidmode(itv))) {
1164 ivtvfb_release_buffers(itv);
1168 /* Register the framebuffer */
1169 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
1170 ivtvfb_release_buffers(itv);
1174 itv->osd_video_pbase = itv->osd_info->video_pbase;
1176 /* Set the card to the requested mode */
1177 ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
1179 /* Set color 0 to black */
1180 write_reg(0, 0x02a30);
1181 write_reg(0, 0x02a34);
1183 /* Enable the osd */
1184 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
1187 ivtv_udma_alloc(itv);
1192 static int __init ivtvfb_callback_init(struct device *dev, void *p)
1194 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
1195 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
1197 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
1198 if (ivtvfb_init_card(itv) == 0) {
1199 IVTVFB_INFO("Framebuffer registered on %s\n",
1200 itv->v4l2_dev.name);
1207 static int ivtvfb_callback_cleanup(struct device *dev, void *p)
1209 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
1210 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
1212 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
1213 if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
1214 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n",
1218 IVTVFB_INFO("Unregister framebuffer %d\n", itv->instance);
1219 ivtvfb_blank(FB_BLANK_POWERDOWN, &itv->osd_info->ivtvfb_info);
1220 ivtvfb_release_buffers(itv);
1221 itv->osd_video_pbase = 0;
1226 static int __init ivtvfb_init(void)
1228 struct device_driver *drv;
1232 if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) {
1233 printk(KERN_ERR "ivtvfb: ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n",
1234 IVTV_MAX_CARDS - 1);
1238 drv = driver_find("ivtv", &pci_bus_type);
1239 err = driver_for_each_device(drv, NULL, ®istered, ivtvfb_callback_init);
1242 printk(KERN_ERR "ivtvfb: no cards found\n");
1248 static void ivtvfb_cleanup(void)
1250 struct device_driver *drv;
1253 printk(KERN_INFO "ivtvfb: Unloading framebuffer module\n");
1255 drv = driver_find("ivtv", &pci_bus_type);
1256 err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup);
1260 module_init(ivtvfb_init);
1261 module_exit(ivtvfb_cleanup);