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 "ivtv-driver.h"
42 #include "ivtv-cards.h"
44 #include "ivtv-udma.h"
45 #include "ivtv-mailbox.h"
46 #include "ivtv-firmware.h"
49 #include <linux/ivtvfb.h>
56 static int ivtvfb_card_id = -1;
57 static int ivtvfb_debug = 0;
58 static bool osd_laced;
65 module_param(ivtvfb_card_id, int, 0444);
66 module_param_named(debug,ivtvfb_debug, int, 0644);
67 module_param(osd_laced, bool, 0444);
68 module_param(osd_depth, int, 0444);
69 module_param(osd_upper, int, 0444);
70 module_param(osd_left, int, 0444);
71 module_param(osd_yres, int, 0444);
72 module_param(osd_xres, int, 0444);
74 MODULE_PARM_DESC(ivtvfb_card_id,
75 "Only use framebuffer of the specified ivtv card (0-31)\n"
76 "\t\t\tdefault -1: initialize all available framebuffers");
78 MODULE_PARM_DESC(debug,
79 "Debug level (bitmask). Default: errors only\n"
80 "\t\t\t(debug = 3 gives full debugging)");
82 /* Why upper, left, xres, yres, depth, laced ? To match terminology used
84 Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */
86 MODULE_PARM_DESC(osd_laced,
92 MODULE_PARM_DESC(osd_depth,
93 "Bits per pixel - 8, 16, 32\n"
96 MODULE_PARM_DESC(osd_upper,
97 "Vertical start position\n"
98 "\t\t\tdefault 0 (Centered)");
100 MODULE_PARM_DESC(osd_left,
101 "Horizontal start position\n"
102 "\t\t\tdefault 0 (Centered)");
104 MODULE_PARM_DESC(osd_yres,
106 "\t\t\tdefault 480 (PAL)\n"
107 "\t\t\t 400 (NTSC)");
109 MODULE_PARM_DESC(osd_xres,
111 "\t\t\tdefault 640");
113 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong");
114 MODULE_LICENSE("GPL");
116 /* --------------------------------------------------------------------- */
118 #define IVTVFB_DBGFLG_WARN (1 << 0)
119 #define IVTVFB_DBGFLG_INFO (1 << 1)
121 #define IVTVFB_DEBUG(x, type, fmt, args...) \
123 if ((x) & ivtvfb_debug) \
124 printk(KERN_INFO "ivtvfb%d " type ": " fmt, itv->instance , ## args); \
126 #define IVTVFB_DEBUG_WARN(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_WARN, "warning", fmt , ## args)
127 #define IVTVFB_DEBUG_INFO(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_INFO, "info", fmt , ## args)
129 /* Standard kernel messages */
130 #define IVTVFB_ERR(fmt, args...) printk(KERN_ERR "ivtvfb%d: " fmt, itv->instance , ## args)
131 #define IVTVFB_WARN(fmt, args...) printk(KERN_WARNING "ivtvfb%d: " fmt, itv->instance , ## args)
132 #define IVTVFB_INFO(fmt, args...) printk(KERN_INFO "ivtvfb%d: " fmt, itv->instance , ## args)
134 /* --------------------------------------------------------------------- */
136 #define IVTV_OSD_MAX_WIDTH 720
137 #define IVTV_OSD_MAX_HEIGHT 576
139 #define IVTV_OSD_BPP_8 0x00
140 #define IVTV_OSD_BPP_16_444 0x03
141 #define IVTV_OSD_BPP_16_555 0x02
142 #define IVTV_OSD_BPP_16_565 0x01
143 #define IVTV_OSD_BPP_32 0x04
146 /* Physical base address */
147 unsigned long video_pbase;
148 /* Relative base address (relative to start of decoder memory) */
150 /* Mapped base address */
151 volatile char __iomem *video_vbase;
153 u32 video_buffer_size;
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;
179 /* Used for a warm start */
180 struct fb_var_screeninfo fbvar_cur;
182 u32 palette_cur[256];
186 struct ivtv_osd_coords {
187 unsigned long offset;
188 unsigned long max_offset;
195 /* --------------------------------------------------------------------- */
197 /* ivtv API calls for framebuffer related support */
199 static int ivtvfb_get_framebuffer(struct ivtv *itv, u32 *fbbase,
202 u32 data[CX2341X_MBOX_MAX_DATA];
205 ivtv_firmware_check(itv, "ivtvfb_get_framebuffer");
206 rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0);
212 static int ivtvfb_get_osd_coords(struct ivtv *itv,
213 struct ivtv_osd_coords *osd)
215 struct osd_info *oi = itv->osd_info;
216 u32 data[CX2341X_MBOX_MAX_DATA];
218 ivtv_vapi_result(itv, data, CX2341X_OSD_GET_OSD_COORDS, 0);
220 osd->offset = data[0] - oi->video_rbase;
221 osd->max_offset = oi->display_width * oi->display_height * 4;
222 osd->pixel_stride = data[1];
223 osd->lines = data[2];
229 static int ivtvfb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords *osd)
231 struct osd_info *oi = itv->osd_info;
233 oi->display_width = osd->pixel_stride;
234 oi->display_byte_stride = osd->pixel_stride * oi->bytes_per_pixel;
235 oi->set_osd_coords_x += osd->x;
236 oi->set_osd_coords_y = osd->y;
238 return ivtv_vapi(itv, CX2341X_OSD_SET_OSD_COORDS, 5,
239 osd->offset + oi->video_rbase,
241 osd->lines, osd->x, osd->y);
244 static int ivtvfb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window)
246 int osd_height_limit = itv->is_out_50hz ? 576 : 480;
248 /* Only fail if resolution too high, otherwise fudge the start coords. */
249 if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH))
252 /* Ensure we don't exceed display limits */
253 if (ivtv_window->top + ivtv_window->height > osd_height_limit) {
254 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n",
255 ivtv_window->top, ivtv_window->height);
256 ivtv_window->top = osd_height_limit - ivtv_window->height;
259 if (ivtv_window->left + ivtv_window->width > IVTV_OSD_MAX_WIDTH) {
260 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n",
261 ivtv_window->left, ivtv_window->width);
262 ivtv_window->left = IVTV_OSD_MAX_WIDTH - ivtv_window->width;
265 /* Set the OSD origin */
266 write_reg((ivtv_window->top << 16) | ivtv_window->left, 0x02a04);
268 /* How much to display */
269 write_reg(((ivtv_window->top+ivtv_window->height) << 16) | (ivtv_window->left+ivtv_window->width), 0x02a08);
271 /* Pass this info back the yuv handler */
272 itv->yuv_info.osd_vis_w = ivtv_window->width;
273 itv->yuv_info.osd_vis_h = ivtv_window->height;
274 itv->yuv_info.osd_x_offset = ivtv_window->left;
275 itv->yuv_info.osd_y_offset = ivtv_window->top;
280 static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv,
281 unsigned long ivtv_dest_addr, void __user *userbuf,
287 mutex_lock(&itv->udma.lock);
289 if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
290 mutex_unlock(&itv->udma.lock);
291 IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, Error with get_user_pages: %d bytes, %d pages returned\n",
292 size_in_bytes, itv->udma.page_count);
294 /* get_user_pages must have failed completely */
298 IVTVFB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n",
299 size_in_bytes, itv->udma.page_count);
301 ivtv_udma_prepare(itv);
302 prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
303 /* if no UDMA is pending and no UDMA is in progress, then the DMA
305 while (test_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags) ||
306 test_bit(IVTV_F_I_UDMA, &itv->i_flags)) {
307 /* don't interrupt if the DMA is in progress but break off
308 a still pending DMA. */
309 got_sig = signal_pending(current);
310 if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags))
315 finish_wait(&itv->dma_waitq, &wait);
317 /* Unmap Last DMA Xfer */
318 ivtv_udma_unmap(itv);
319 mutex_unlock(&itv->udma.lock);
321 IVTV_DEBUG_INFO("User stopped OSD\n");
328 static int ivtvfb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
329 unsigned long dest_offset, int count)
332 struct osd_info *oi = itv->osd_info;
336 IVTVFB_DEBUG_WARN("ivtvfb_prep_frame: Nothing to do. count = 0\n");
340 /* Check Total FB Size */
341 if ((dest_offset + count) > oi->video_buffer_size) {
342 IVTVFB_WARN("ivtvfb_prep_frame: Overflowing the framebuffer %ld, only %d available\n",
343 dest_offset + count, oi->video_buffer_size);
347 /* Not fatal, but will have undesirable results */
348 if ((unsigned long)source & 3)
349 IVTVFB_WARN("ivtvfb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n",
350 (unsigned long)source);
353 IVTVFB_WARN("ivtvfb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset);
356 IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count);
359 if (!access_ok(VERIFY_READ, source + dest_offset, count)) {
360 IVTVFB_WARN("Invalid userspace pointer 0x%08lx\n",
361 (unsigned long)source);
363 IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source 0x%08lx count %d\n",
364 dest_offset, (unsigned long)source,
369 /* OSD Address to send DMA to */
370 dest_offset += IVTV_DECODER_OFFSET + oi->video_rbase;
373 return ivtvfb_prep_dec_dma_to_device(itv, dest_offset, source, count);
376 static ssize_t ivtvfb_write(struct fb_info *info, const char __user *buf,
377 size_t count, loff_t *ppos)
379 unsigned long p = *ppos;
383 unsigned long total_size;
384 struct ivtv *itv = (struct ivtv *) info->par;
385 unsigned long dma_offset =
386 IVTV_DECODER_OFFSET + itv->osd_info->video_rbase;
387 unsigned long dma_size;
388 u16 lead = 0, tail = 0;
390 if (info->state != FBINFO_STATE_RUNNING)
393 total_size = info->screen_size;
396 total_size = info->fix.smem_len;
401 if (count > total_size) {
406 if (count + p > total_size) {
409 count = total_size - p;
412 dst = (void __force *) (info->screen_base + p);
414 if (info->fbops->fb_sync)
415 info->fbops->fb_sync(info);
417 /* If transfer size > threshold and both src/dst
418 addresses are aligned, use DMA */
420 ((unsigned long)buf & 3) == ((unsigned long)dst & 3)) {
421 /* Odd address = can't DMA. Align */
422 if ((unsigned long)dst & 3) {
423 lead = 4 - ((unsigned long)dst & 3);
424 if (copy_from_user(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 dma_err = ivtvfb_prep_dec_dma_to_device(itv,
435 p + lead + dma_offset, (void __user *)buf, dma_size);
440 /* Copy any leftover data */
441 if (tail && copy_from_user(dst, buf, tail))
443 } else if (copy_from_user(dst, buf, count)) {
450 return (err) ? err : count;
453 static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
456 struct ivtv *itv = (struct ivtv *)info->par;
460 case FBIOGET_VBLANK: {
461 struct fb_vblank vblank;
464 memset(&vblank, 0, sizeof(struct fb_vblank));
466 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
467 FB_VBLANK_HAVE_VSYNC;
468 trace = read_reg(IVTV_REG_DEC_LINE_FIELD) >> 16;
469 if (itv->is_out_50hz && trace > 312)
471 else if (itv->is_out_60hz && trace > 262)
474 vblank.flags |= FB_VBLANK_VSYNCING;
475 vblank.count = itv->last_vsync_field;
476 vblank.vcount = trace;
478 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
483 case FBIO_WAITFORVSYNC:
484 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
485 if (!schedule_timeout(msecs_to_jiffies(50)))
487 finish_wait(&itv->vsync_waitq, &wait);
490 case IVTVFB_IOC_DMA_FRAME: {
491 struct ivtvfb_dma_frame args;
493 IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
494 if (copy_from_user(&args, (void __user *)arg, sizeof(args)))
497 return ivtvfb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count);
501 IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd);
507 /* Framebuffer device handling */
509 static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
511 struct osd_info *oi = itv->osd_info;
512 struct ivtv_osd_coords ivtv_osd;
513 struct v4l2_rect ivtv_window;
516 IVTVFB_DEBUG_INFO("ivtvfb_set_var\n");
518 /* Select color space */
519 if (var->nonstd) /* YUV */
520 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
522 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
524 /* Set the color mode */
525 switch (var->bits_per_pixel) {
527 osd_mode = IVTV_OSD_BPP_8;
530 osd_mode = IVTV_OSD_BPP_32;
533 switch (var->green.length) {
535 osd_mode = IVTV_OSD_BPP_16_444;
538 osd_mode = IVTV_OSD_BPP_16_555;
541 osd_mode = IVTV_OSD_BPP_16_565;
544 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
548 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
551 /* Set video mode. Although rare, the display can become scrambled even
552 if we don't change mode. Always 'bounce' to osd_mode via mode 0 */
553 if (osd_mode != -1) {
554 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
555 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode);
558 oi->bits_per_pixel = var->bits_per_pixel;
559 oi->bytes_per_pixel = var->bits_per_pixel / 8;
561 /* Set the flicker filter */
562 switch (var->vmode & FB_VMODE_MASK) {
563 case FB_VMODE_NONINTERLACED: /* Filter on */
564 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1);
566 case FB_VMODE_INTERLACED: /* Filter off */
567 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0);
570 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
573 /* Read the current osd info */
574 ivtvfb_get_osd_coords(itv, &ivtv_osd);
576 /* Now set the OSD to the size we want */
577 ivtv_osd.pixel_stride = var->xres_virtual;
578 ivtv_osd.lines = var->yres_virtual;
581 ivtvfb_set_osd_coords(itv, &ivtv_osd);
583 /* Can't seem to find the right API combo for this.
584 Use another function which does what we need through direct register access. */
585 ivtv_window.width = var->xres;
586 ivtv_window.height = var->yres;
588 /* Minimum margin cannot be 0, as X won't allow such a mode */
589 if (!var->upper_margin)
591 if (!var->left_margin)
593 ivtv_window.top = var->upper_margin - 1;
594 ivtv_window.left = var->left_margin - 1;
596 ivtvfb_set_display_window(itv, &ivtv_window);
598 /* Pass screen size back to yuv handler */
599 itv->yuv_info.osd_full_w = ivtv_osd.pixel_stride;
600 itv->yuv_info.osd_full_h = ivtv_osd.lines;
602 /* Force update of yuv registers */
603 itv->yuv_info.yuv_forced_update = 1;
605 /* Keep a copy of these settings */
606 memcpy(&oi->fbvar_cur, var, sizeof(oi->fbvar_cur));
608 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
609 var->xres, var->yres,
610 var->xres_virtual, var->yres_virtual,
611 var->bits_per_pixel);
613 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
614 var->left_margin, var->upper_margin);
616 IVTVFB_DEBUG_INFO("Display filter: %s\n",
617 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
618 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
623 static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix)
625 struct osd_info *oi = itv->osd_info;
627 IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n");
628 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
629 strlcpy(fix->id, "cx23415 TV out", sizeof(fix->id));
630 fix->smem_start = oi->video_pbase;
631 fix->smem_len = oi->video_buffer_size;
632 fix->type = FB_TYPE_PACKED_PIXELS;
633 fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
637 fix->line_length = oi->display_byte_stride;
638 fix->accel = FB_ACCEL_NONE;
642 /* Check the requested display mode, returning -EINVAL if we can't
645 static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
647 struct osd_info *oi = itv->osd_info;
648 int osd_height_limit;
649 u32 pixclock, hlimit, vlimit;
651 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
653 /* Set base references for mode calcs. */
654 if (itv->is_out_50hz) {
658 osd_height_limit = 576;
664 osd_height_limit = 480;
667 if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) {
668 var->transp.offset = 24;
669 var->transp.length = 8;
670 var->red.offset = 16;
672 var->green.offset = 8;
673 var->green.length = 8;
674 var->blue.offset = 0;
675 var->blue.length = 8;
677 else if (var->bits_per_pixel == 16) {
678 /* To find out the true mode, check green length */
679 switch (var->green.length) {
683 var->green.offset = 4;
684 var->green.length = 4;
685 var->blue.offset = 0;
686 var->blue.length = 4;
687 var->transp.offset = 12;
688 var->transp.length = 1;
691 var->red.offset = 10;
693 var->green.offset = 5;
694 var->green.length = 5;
695 var->blue.offset = 0;
696 var->blue.length = 5;
697 var->transp.offset = 15;
698 var->transp.length = 1;
701 var->red.offset = 11;
703 var->green.offset = 5;
704 var->green.length = 6;
705 var->blue.offset = 0;
706 var->blue.length = 5;
707 var->transp.offset = 0;
708 var->transp.length = 0;
713 IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
717 /* Check the resolution */
718 if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) {
719 IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n",
720 var->xres, var->yres);
724 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
725 if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) ||
726 var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size ||
727 var->xres_virtual < var->xres ||
728 var->yres_virtual < var->yres) {
729 IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
730 var->xres_virtual, var->yres_virtual);
734 /* Some extra checks if in 8 bit mode */
735 if (var->bits_per_pixel == 8) {
736 /* Width must be a multiple of 4 */
738 IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres);
741 if (var->xres_virtual & 3) {
742 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual);
746 else if (var->bits_per_pixel == 16) {
747 /* Width must be a multiple of 2 */
749 IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres);
752 if (var->xres_virtual & 1) {
753 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual);
758 /* Now check the offsets */
759 if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) {
760 IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
761 var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual);
765 /* Check pixel format */
766 if (var->nonstd > 1) {
767 IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd);
771 /* Check video mode */
772 if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) &&
773 ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) {
774 IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK);
778 /* Check the left & upper margins
779 If the margins are too large, just center the screen
780 (enforcing margins causes too many problems) */
782 if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1)
783 var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
785 if (var->upper_margin + var->yres > (itv->is_out_50hz ? 577 : 481))
786 var->upper_margin = 1 + (((itv->is_out_50hz ? 576 : 480) -
789 /* Maintain overall 'size' for a constant refresh rate */
790 var->right_margin = hlimit - var->left_margin - var->xres;
791 var->lower_margin = vlimit - var->upper_margin - var->yres;
793 /* Fixed sync times */
797 /* Non-interlaced / interlaced mode is used to switch the OSD filter
798 on or off. Adjust the clock timings to maintain a constant
799 vertical refresh rate. */
800 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED)
801 var->pixclock = pixclock / 2;
803 var->pixclock = pixclock;
805 itv->osd_rect.width = var->xres;
806 itv->osd_rect.height = var->yres;
808 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
809 var->xres, var->yres,
810 var->xres_virtual, var->yres_virtual,
811 var->bits_per_pixel);
813 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
814 var->left_margin, var->upper_margin);
816 IVTVFB_DEBUG_INFO("Display filter: %s\n",
817 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
818 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
822 static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
824 struct ivtv *itv = (struct ivtv *) info->par;
825 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
826 return _ivtvfb_check_var(var, itv);
829 static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
832 struct ivtv *itv = (struct ivtv *) info->par;
834 if (var->yoffset + info->var.yres > info->var.yres_virtual ||
835 var->xoffset + info->var.xres > info->var.xres_virtual)
838 osd_pan_index = var->yoffset * info->fix.line_length
839 + var->xoffset * info->var.bits_per_pixel / 8;
840 write_reg(osd_pan_index, 0x02A0C);
842 /* Pass this info back the yuv handler */
843 itv->yuv_info.osd_x_pan = var->xoffset;
844 itv->yuv_info.osd_y_pan = var->yoffset;
845 /* Force update of yuv registers */
846 itv->yuv_info.yuv_forced_update = 1;
847 /* Remember this value */
848 itv->osd_info->pan_cur = osd_pan_index;
852 static int ivtvfb_set_par(struct fb_info *info)
855 struct ivtv *itv = (struct ivtv *) info->par;
857 IVTVFB_DEBUG_INFO("ivtvfb_set_par\n");
859 rc = ivtvfb_set_var(itv, &info->var);
860 ivtvfb_pan_display(&info->var, info);
861 ivtvfb_get_fix(itv, &info->fix);
862 ivtv_firmware_check(itv, "ivtvfb_set_par");
866 static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
867 unsigned blue, unsigned transp,
868 struct fb_info *info)
871 struct ivtv *itv = (struct ivtv *)info->par;
873 if (regno >= info->cmap.len)
876 color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8);
877 if (info->var.bits_per_pixel <= 8) {
878 write_reg(regno, 0x02a30);
879 write_reg(color, 0x02a34);
880 itv->osd_info->palette_cur[regno] = color;
886 palette = info->pseudo_palette;
887 if (info->var.bits_per_pixel == 16) {
888 switch (info->var.green.length) {
890 color = ((red & 0xf000) >> 4) |
891 ((green & 0xf000) >> 8) |
892 ((blue & 0xf000) >> 12);
895 color = ((red & 0xf800) >> 1) |
896 ((green & 0xf800) >> 6) |
897 ((blue & 0xf800) >> 11);
900 color = (red & 0xf800 ) |
901 ((green & 0xfc00) >> 5) |
902 ((blue & 0xf800) >> 11);
906 palette[regno] = color;
910 /* We don't really support blanking. All this does is enable or
912 static int ivtvfb_blank(int blank_mode, struct fb_info *info)
914 struct ivtv *itv = (struct ivtv *)info->par;
916 IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode);
917 switch (blank_mode) {
918 case FB_BLANK_UNBLANK:
919 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
920 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
922 case FB_BLANK_NORMAL:
923 case FB_BLANK_HSYNC_SUSPEND:
924 case FB_BLANK_VSYNC_SUSPEND:
925 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
926 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
928 case FB_BLANK_POWERDOWN:
929 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0);
930 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
933 itv->osd_info->blank_cur = blank_mode;
937 static struct fb_ops ivtvfb_ops = {
938 .owner = THIS_MODULE,
939 .fb_write = ivtvfb_write,
940 .fb_check_var = ivtvfb_check_var,
941 .fb_set_par = ivtvfb_set_par,
942 .fb_setcolreg = ivtvfb_setcolreg,
943 .fb_fillrect = cfb_fillrect,
944 .fb_copyarea = cfb_copyarea,
945 .fb_imageblit = cfb_imageblit,
947 .fb_ioctl = ivtvfb_ioctl,
948 .fb_pan_display = ivtvfb_pan_display,
949 .fb_blank = ivtvfb_blank,
952 /* Restore hardware after firmware restart */
953 static void ivtvfb_restore(struct ivtv *itv)
955 struct osd_info *oi = itv->osd_info;
958 ivtvfb_set_var(itv, &oi->fbvar_cur);
959 ivtvfb_blank(oi->blank_cur, &oi->ivtvfb_info);
960 for (i = 0; i < 256; i++) {
961 write_reg(i, 0x02a30);
962 write_reg(oi->palette_cur[i], 0x02a34);
964 write_reg(oi->pan_cur, 0x02a0c);
970 /* Setup our initial video mode */
971 static int ivtvfb_init_vidmode(struct ivtv *itv)
973 struct osd_info *oi = itv->osd_info;
974 struct v4l2_rect start_window;
979 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32)
981 oi->bits_per_pixel = osd_depth;
982 oi->bytes_per_pixel = oi->bits_per_pixel / 8;
984 /* Horizontal size & position */
989 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
992 else if (osd_depth == 16)
995 start_window.width = osd_xres ? osd_xres : 640;
997 /* Check horizontal start (osd_left). */
998 if (osd_left && osd_left + start_window.width > 721) {
999 IVTVFB_ERR("Invalid osd_left - assuming default\n");
1003 /* Hardware coords start at 0, user coords start at 1. */
1006 start_window.left = osd_left >= 0 ?
1007 osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
1009 oi->display_byte_stride =
1010 start_window.width * oi->bytes_per_pixel;
1012 /* Vertical size & position */
1014 max_height = itv->is_out_50hz ? 576 : 480;
1016 if (osd_yres > max_height)
1017 osd_yres = max_height;
1019 start_window.height = osd_yres ?
1020 osd_yres : itv->is_out_50hz ? 480 : 400;
1022 /* Check vertical start (osd_upper). */
1023 if (osd_upper + start_window.height > max_height + 1) {
1024 IVTVFB_ERR("Invalid osd_upper - assuming default\n");
1028 /* Hardware coords start at 0, user coords start at 1. */
1031 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
1033 oi->display_width = start_window.width;
1034 oi->display_height = start_window.height;
1036 /* Generate a valid fb_var_screeninfo */
1038 oi->ivtvfb_defined.xres = oi->display_width;
1039 oi->ivtvfb_defined.yres = oi->display_height;
1040 oi->ivtvfb_defined.xres_virtual = oi->display_width;
1041 oi->ivtvfb_defined.yres_virtual = oi->display_height;
1042 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
1043 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
1044 oi->ivtvfb_defined.left_margin = start_window.left + 1;
1045 oi->ivtvfb_defined.upper_margin = start_window.top + 1;
1046 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
1047 oi->ivtvfb_defined.nonstd = 0;
1049 /* We've filled in the most data, let the usual mode check
1050 routine fill in the rest. */
1051 _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
1053 /* Generate valid fb_fix_screeninfo */
1055 ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
1057 /* Generate valid fb_info */
1059 oi->ivtvfb_info.node = -1;
1060 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
1061 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1062 oi->ivtvfb_info.par = itv;
1063 oi->ivtvfb_info.var = oi->ivtvfb_defined;
1064 oi->ivtvfb_info.fix = oi->ivtvfb_fix;
1065 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
1066 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1068 /* Supply some monitor specs. Bogus values will do for now */
1069 oi->ivtvfb_info.monspecs.hfmin = 8000;
1070 oi->ivtvfb_info.monspecs.hfmax = 70000;
1071 oi->ivtvfb_info.monspecs.vfmin = 10;
1072 oi->ivtvfb_info.monspecs.vfmax = 100;
1074 /* Allocate color map */
1075 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
1076 IVTVFB_ERR("abort, unable to alloc cmap\n");
1080 /* Allocate the pseudo palette */
1081 oi->ivtvfb_info.pseudo_palette =
1082 kmalloc(sizeof(u32) * 16, GFP_KERNEL|__GFP_NOWARN);
1084 if (!oi->ivtvfb_info.pseudo_palette) {
1085 IVTVFB_ERR("abort, unable to alloc pseudo palette\n");
1092 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
1094 static int ivtvfb_init_io(struct ivtv *itv)
1096 struct osd_info *oi = itv->osd_info;
1097 /* Find the largest power of two that maps the whole buffer */
1098 int size_shift = 31;
1100 mutex_lock(&itv->serialize_lock);
1101 if (ivtv_init_on_first_open(itv)) {
1102 mutex_unlock(&itv->serialize_lock);
1103 IVTVFB_ERR("Failed to initialize ivtv\n");
1106 mutex_unlock(&itv->serialize_lock);
1108 if (ivtvfb_get_framebuffer(itv, &oi->video_rbase,
1109 &oi->video_buffer_size) < 0) {
1110 IVTVFB_ERR("Firmware failed to respond\n");
1114 /* The osd buffer size depends on the number of video buffers allocated
1115 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
1116 size to prevent any overlap. */
1117 oi->video_buffer_size = 1704960;
1119 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
1120 oi->video_vbase = itv->dec_mem + oi->video_rbase;
1122 if (!oi->video_vbase) {
1123 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
1124 oi->video_buffer_size, oi->video_pbase);
1128 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
1129 oi->video_pbase, oi->video_vbase,
1130 oi->video_buffer_size / 1024);
1132 while (!(oi->video_buffer_size & (1 << size_shift)))
1135 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
1136 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
1137 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
1138 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
1139 oi->wc_cookie = arch_phys_wc_add(oi->fb_start_aligned_physaddr,
1140 oi->fb_end_aligned_physaddr -
1141 oi->fb_start_aligned_physaddr);
1142 /* Blank the entire osd. */
1143 memset_io(oi->video_vbase, 0, oi->video_buffer_size);
1148 /* Release any memory we've grabbed & remove mtrr entry */
1149 static void ivtvfb_release_buffers (struct ivtv *itv)
1151 struct osd_info *oi = itv->osd_info;
1154 if (oi->ivtvfb_info.cmap.len)
1155 fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
1157 /* Release pseudo palette */
1158 kfree(oi->ivtvfb_info.pseudo_palette);
1159 arch_phys_wc_del(oi->wc_cookie);
1161 itv->osd_info = NULL;
1164 /* Initialize the specified card */
1166 static int ivtvfb_init_card(struct ivtv *itv)
1170 #ifdef CONFIG_X86_64
1171 if (pat_enabled()) {
1172 pr_warn("ivtvfb needs PAT disabled, boot with nopat kernel parameter\n");
1177 if (itv->osd_info) {
1178 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id);
1182 itv->osd_info = kzalloc(sizeof(struct osd_info),
1183 GFP_ATOMIC|__GFP_NOWARN);
1184 if (itv->osd_info == NULL) {
1185 IVTVFB_ERR("Failed to allocate memory for osd_info\n");
1189 /* Find & setup the OSD buffer */
1190 rc = ivtvfb_init_io(itv);
1192 ivtvfb_release_buffers(itv);
1196 /* Set the startup video mode information */
1197 if ((rc = ivtvfb_init_vidmode(itv))) {
1198 ivtvfb_release_buffers(itv);
1202 /* Register the framebuffer */
1203 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
1204 ivtvfb_release_buffers(itv);
1208 itv->osd_video_pbase = itv->osd_info->video_pbase;
1210 /* Set the card to the requested mode */
1211 ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
1213 /* Set color 0 to black */
1214 write_reg(0, 0x02a30);
1215 write_reg(0, 0x02a34);
1217 /* Enable the osd */
1218 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
1220 /* Enable restart */
1221 itv->ivtvfb_restore = ivtvfb_restore;
1224 ivtv_udma_alloc(itv);
1229 static int __init ivtvfb_callback_init(struct device *dev, void *p)
1231 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
1232 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
1234 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1235 if (ivtvfb_init_card(itv) == 0) {
1236 IVTVFB_INFO("Framebuffer registered on %s\n",
1237 itv->v4l2_dev.name);
1244 static int ivtvfb_callback_cleanup(struct device *dev, void *p)
1246 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
1247 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
1248 struct osd_info *oi = itv->osd_info;
1250 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1251 if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
1252 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n",
1256 IVTVFB_INFO("Unregister framebuffer %d\n", itv->instance);
1257 itv->ivtvfb_restore = NULL;
1258 ivtvfb_blank(FB_BLANK_VSYNC_SUSPEND, &oi->ivtvfb_info);
1259 ivtvfb_release_buffers(itv);
1260 itv->osd_video_pbase = 0;
1265 static int __init ivtvfb_init(void)
1267 struct device_driver *drv;
1272 if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) {
1273 pr_err("ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n",
1274 IVTV_MAX_CARDS - 1);
1278 drv = driver_find("ivtv", &pci_bus_type);
1279 err = driver_for_each_device(drv, NULL, ®istered, ivtvfb_callback_init);
1280 (void)err; /* suppress compiler warning */
1282 pr_err("no cards found\n");
1288 static void ivtvfb_cleanup(void)
1290 struct device_driver *drv;
1293 pr_info("Unloading framebuffer module\n");
1295 drv = driver_find("ivtv", &pci_bus_type);
1296 err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup);
1297 (void)err; /* suppress compiler warning */
1300 module_init(ivtvfb_init);
1301 module_exit(ivtvfb_cleanup);