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,
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;
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) {
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 (!access_ok(VERIFY_READ, buf, count)) {
412 IVTVFB_WARN("Invalid userspace pointer 0x%08lx\n",
418 /* If transfer size > threshold and both src/dst
419 addresses are aligned, use DMA */
421 ((unsigned long)buf & 3) == ((unsigned long)dst & 3)) {
422 /* Odd address = can't DMA. Align */
423 if ((unsigned long)dst & 3) {
424 lead = 4 - ((unsigned long)dst & 3);
425 memcpy(dst, buf, lead);
429 /* DMA resolution is 32 bits */
430 if ((count - lead) & 3)
431 tail = (count - lead) & 3;
433 dma_size = count - lead - tail;
434 err = ivtvfb_prep_dec_dma_to_device(itv,
435 p + lead + dma_offset, (void *)buf, dma_size);
438 /* Copy any leftover data */
440 memcpy(dst, buf, tail);
442 memcpy(dst, buf, count);
449 return (err) ? err : count;
452 static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
455 struct ivtv *itv = (struct ivtv *)info->par;
459 case FBIOGET_VBLANK: {
460 struct fb_vblank vblank;
463 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
464 FB_VBLANK_HAVE_VSYNC;
465 trace = read_reg(0x028c0) >> 16;
466 if (itv->is_50hz && trace > 312) trace -= 312;
467 else if (itv->is_60hz && trace > 262) trace -= 262;
468 if (trace == 1) vblank.flags |= FB_VBLANK_VSYNCING;
469 vblank.count = itv->last_vsync_field;
470 vblank.vcount = trace;
472 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
477 case FBIO_WAITFORVSYNC:
478 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
479 if (!schedule_timeout(msecs_to_jiffies(50))) rc = -ETIMEDOUT;
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);
900 case FB_BLANK_NORMAL:
901 case FB_BLANK_HSYNC_SUSPEND:
902 case FB_BLANK_VSYNC_SUSPEND:
903 case FB_BLANK_POWERDOWN:
904 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
910 static struct fb_ops ivtvfb_ops = {
911 .owner = THIS_MODULE,
912 .fb_write = ivtvfb_write,
913 .fb_check_var = ivtvfb_check_var,
914 .fb_set_par = ivtvfb_set_par,
915 .fb_setcolreg = ivtvfb_setcolreg,
916 .fb_fillrect = cfb_fillrect,
917 .fb_copyarea = cfb_copyarea,
918 .fb_imageblit = cfb_imageblit,
920 .fb_ioctl = ivtvfb_ioctl,
921 .fb_pan_display = ivtvfb_pan_display,
922 .fb_blank = ivtvfb_blank,
928 /* Setup our initial video mode */
929 static int ivtvfb_init_vidmode(struct ivtv *itv)
931 struct osd_info *oi = itv->osd_info;
932 struct v4l2_rect start_window;
937 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32)
939 oi->bits_per_pixel = osd_depth;
940 oi->bytes_per_pixel = oi->bits_per_pixel / 8;
942 /* Horizontal size & position */
947 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
950 else if (osd_depth == 16)
953 start_window.width = osd_xres ? osd_xres : 640;
955 /* Check horizontal start (osd_left). */
956 if (osd_left && osd_left + start_window.width > 721) {
957 IVTVFB_ERR("Invalid osd_left - assuming default\n");
961 /* Hardware coords start at 0, user coords start at 1. */
964 start_window.left = osd_left >= 0 ? osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
966 oi->display_byte_stride =
967 start_window.width * oi->bytes_per_pixel;
969 /* Vertical size & position */
971 max_height = itv->is_50hz ? 576 : 480;
973 if (osd_yres > max_height)
974 osd_yres = max_height;
976 start_window.height = osd_yres ? osd_yres : itv->is_50hz ? 480 : 400;
978 /* Check vertical start (osd_upper). */
979 if (osd_upper + start_window.height > max_height + 1) {
980 IVTVFB_ERR("Invalid osd_upper - assuming default\n");
984 /* Hardware coords start at 0, user coords start at 1. */
987 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
989 oi->display_width = start_window.width;
990 oi->display_height = start_window.height;
992 /* Generate a valid fb_var_screeninfo */
994 oi->ivtvfb_defined.xres = oi->display_width;
995 oi->ivtvfb_defined.yres = oi->display_height;
996 oi->ivtvfb_defined.xres_virtual = oi->display_width;
997 oi->ivtvfb_defined.yres_virtual = oi->display_height;
998 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
999 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
1000 oi->ivtvfb_defined.left_margin = start_window.left + 1;
1001 oi->ivtvfb_defined.upper_margin = start_window.top + 1;
1002 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
1003 oi->ivtvfb_defined.nonstd = 0;
1005 /* We've filled in the most data, let the usual mode check
1006 routine fill in the rest. */
1007 _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
1009 /* Generate valid fb_fix_screeninfo */
1011 ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
1013 /* Generate valid fb_info */
1015 oi->ivtvfb_info.node = -1;
1016 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
1017 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1018 oi->ivtvfb_info.par = itv;
1019 oi->ivtvfb_info.var = oi->ivtvfb_defined;
1020 oi->ivtvfb_info.fix = oi->ivtvfb_fix;
1021 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
1022 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1024 /* Supply some monitor specs. Bogus values will do for now */
1025 oi->ivtvfb_info.monspecs.hfmin = 8000;
1026 oi->ivtvfb_info.monspecs.hfmax = 70000;
1027 oi->ivtvfb_info.monspecs.vfmin = 10;
1028 oi->ivtvfb_info.monspecs.vfmax = 100;
1030 /* Allocate color map */
1031 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
1032 IVTVFB_ERR("abort, unable to alloc cmap\n");
1036 /* Allocate the pseudo palette */
1037 oi->ivtvfb_info.pseudo_palette =
1038 kmalloc(sizeof(u32) * 16, GFP_KERNEL|__GFP_NOWARN);
1040 if (!oi->ivtvfb_info.pseudo_palette) {
1041 IVTVFB_ERR("abort, unable to alloc pseudo pallete\n");
1048 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
1050 static int ivtvfb_init_io(struct ivtv *itv)
1052 struct osd_info *oi = itv->osd_info;
1054 mutex_lock(&itv->serialize_lock);
1055 if (ivtv_init_on_first_open(itv)) {
1056 mutex_unlock(&itv->serialize_lock);
1057 IVTVFB_ERR("Failed to initialize ivtv\n");
1060 mutex_unlock(&itv->serialize_lock);
1062 ivtvfb_get_framebuffer(itv, &oi->video_rbase, &oi->video_buffer_size);
1064 /* The osd buffer size depends on the number of video buffers allocated
1065 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
1066 size to prevent any overlap. */
1067 oi->video_buffer_size = 1704960;
1069 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
1070 oi->video_vbase = itv->dec_mem + oi->video_rbase;
1072 if (!oi->video_vbase) {
1073 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
1074 oi->video_buffer_size, oi->video_pbase);
1078 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
1079 oi->video_pbase, oi->video_vbase,
1080 oi->video_buffer_size / 1024);
1084 /* Find the largest power of two that maps the whole buffer */
1085 int size_shift = 31;
1087 while (!(oi->video_buffer_size & (1 << size_shift))) {
1091 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
1092 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
1093 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
1094 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
1095 if (mtrr_add(oi->fb_start_aligned_physaddr,
1096 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr,
1097 MTRR_TYPE_WRCOMB, 1) < 0) {
1098 IVTVFB_INFO("disabled mttr\n");
1099 oi->fb_start_aligned_physaddr = 0;
1100 oi->fb_end_aligned_physaddr = 0;
1105 /* Blank the entire osd. */
1106 memset_io(oi->video_vbase, 0, oi->video_buffer_size);
1111 /* Release any memory we've grabbed & remove mtrr entry */
1112 static void ivtvfb_release_buffers (struct ivtv *itv)
1114 struct osd_info *oi = itv->osd_info;
1117 if (oi->ivtvfb_info.cmap.len)
1118 fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
1120 /* Release pseudo palette */
1121 if (oi->ivtvfb_info.pseudo_palette)
1122 kfree(oi->ivtvfb_info.pseudo_palette);
1125 if (oi->fb_end_aligned_physaddr) {
1126 mtrr_del(-1, oi->fb_start_aligned_physaddr,
1127 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr);
1132 itv->osd_info = NULL;
1135 /* Initialize the specified card */
1137 static int ivtvfb_init_card(struct ivtv *itv)
1141 if (itv->osd_info) {
1142 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id);
1146 itv->osd_info = kzalloc(sizeof(struct osd_info),
1147 GFP_ATOMIC|__GFP_NOWARN);
1148 if (itv->osd_info == NULL) {
1149 IVTVFB_ERR("Failed to allocate memory for osd_info\n");
1153 /* Find & setup the OSD buffer */
1154 if ((rc = ivtvfb_init_io(itv)))
1157 /* Set the startup video mode information */
1158 if ((rc = ivtvfb_init_vidmode(itv))) {
1159 ivtvfb_release_buffers(itv);
1163 /* Register the framebuffer */
1164 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
1165 ivtvfb_release_buffers(itv);
1169 itv->osd_video_pbase = itv->osd_info->video_pbase;
1171 /* Set the card to the requested mode */
1172 ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
1174 /* Set color 0 to black */
1175 write_reg(0, 0x02a30);
1176 write_reg(0, 0x02a34);
1178 /* Enable the osd */
1179 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
1182 ivtv_udma_alloc(itv);
1187 static int __init ivtvfb_init(void)
1190 int i, registered = 0;
1192 if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) {
1193 printk(KERN_ERR "ivtvfb: ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n",
1194 IVTV_MAX_CARDS - 1);
1198 /* Locate & initialise all cards supporting an OSD. */
1199 for (i = 0; i < ivtv_cards_active; i++) {
1200 if (ivtvfb_card_id != -1 && i != ivtvfb_card_id)
1202 itv = ivtv_cards[i];
1203 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
1204 if (ivtvfb_init_card(itv) == 0) {
1205 IVTVFB_INFO("Framebuffer registered on ivtv card id %d\n", i);
1211 printk(KERN_ERR "ivtvfb: no cards found");
1217 static void ivtvfb_cleanup(void)
1222 printk(KERN_INFO "ivtvfb: Unloading framebuffer module\n");
1224 for (i = 0; i < ivtv_cards_active; i++) {
1225 itv = ivtv_cards[i];
1226 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) && itv->osd_info) {
1227 if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
1228 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n", i);
1231 IVTVFB_DEBUG_INFO("Unregister framebuffer %d\n", i);
1232 ivtvfb_blank(FB_BLANK_POWERDOWN, &itv->osd_info->ivtvfb_info);
1233 ivtvfb_release_buffers(itv);
1234 itv->osd_video_pbase = 0;
1239 module_init(ivtvfb_init);
1240 module_exit(ivtvfb_cleanup);