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>
45 #include <linux/slab.h>
51 #include "ivtv-driver.h"
52 #include "ivtv-cards.h"
54 #include "ivtv-udma.h"
55 #include "ivtv-mailbox.h"
56 #include "ivtv-firmware.h"
59 static int ivtvfb_card_id = -1;
60 static int ivtvfb_debug = 0;
61 static bool osd_laced;
68 module_param(ivtvfb_card_id, int, 0444);
69 module_param_named(debug,ivtvfb_debug, int, 0644);
70 module_param(osd_laced, bool, 0444);
71 module_param(osd_depth, int, 0444);
72 module_param(osd_upper, int, 0444);
73 module_param(osd_left, int, 0444);
74 module_param(osd_yres, int, 0444);
75 module_param(osd_xres, int, 0444);
77 MODULE_PARM_DESC(ivtvfb_card_id,
78 "Only use framebuffer of the specified ivtv card (0-31)\n"
79 "\t\t\tdefault -1: initialize all available framebuffers");
81 MODULE_PARM_DESC(debug,
82 "Debug level (bitmask). Default: errors only\n"
83 "\t\t\t(debug = 3 gives full debugging)");
85 /* Why upper, left, xres, yres, depth, laced ? To match terminology used
87 Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */
89 MODULE_PARM_DESC(osd_laced,
95 MODULE_PARM_DESC(osd_depth,
96 "Bits per pixel - 8, 16, 32\n"
99 MODULE_PARM_DESC(osd_upper,
100 "Vertical start position\n"
101 "\t\t\tdefault 0 (Centered)");
103 MODULE_PARM_DESC(osd_left,
104 "Horizontal start position\n"
105 "\t\t\tdefault 0 (Centered)");
107 MODULE_PARM_DESC(osd_yres,
109 "\t\t\tdefault 480 (PAL)\n"
110 "\t\t\t 400 (NTSC)");
112 MODULE_PARM_DESC(osd_xres,
114 "\t\t\tdefault 640");
116 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong");
117 MODULE_LICENSE("GPL");
119 /* --------------------------------------------------------------------- */
121 #define IVTVFB_DBGFLG_WARN (1 << 0)
122 #define IVTVFB_DBGFLG_INFO (1 << 1)
124 #define IVTVFB_DEBUG(x, type, fmt, args...) \
126 if ((x) & ivtvfb_debug) \
127 printk(KERN_INFO "ivtvfb%d " type ": " fmt, itv->instance , ## args); \
129 #define IVTVFB_DEBUG_WARN(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_WARN, "warning", fmt , ## args)
130 #define IVTVFB_DEBUG_INFO(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_INFO, "info", fmt , ## args)
132 /* Standard kernel messages */
133 #define IVTVFB_ERR(fmt, args...) printk(KERN_ERR "ivtvfb%d: " fmt, itv->instance , ## args)
134 #define IVTVFB_WARN(fmt, args...) printk(KERN_WARNING "ivtvfb%d: " fmt, itv->instance , ## args)
135 #define IVTVFB_INFO(fmt, args...) printk(KERN_INFO "ivtvfb%d: " fmt, itv->instance , ## args)
137 /* --------------------------------------------------------------------- */
139 #define IVTV_OSD_MAX_WIDTH 720
140 #define IVTV_OSD_MAX_HEIGHT 576
142 #define IVTV_OSD_BPP_8 0x00
143 #define IVTV_OSD_BPP_16_444 0x03
144 #define IVTV_OSD_BPP_16_555 0x02
145 #define IVTV_OSD_BPP_16_565 0x01
146 #define IVTV_OSD_BPP_32 0x04
149 /* Physical base address */
150 unsigned long video_pbase;
151 /* Relative base address (relative to start of decoder memory) */
153 /* Mapped base address */
154 volatile char __iomem *video_vbase;
156 u32 video_buffer_size;
158 /* video_base rounded down as required by hardware MTRRs */
159 unsigned long fb_start_aligned_physaddr;
160 /* video_base rounded up as required by hardware MTRRs */
161 unsigned long fb_end_aligned_physaddr;
164 /* Store the buffer offset */
165 int set_osd_coords_x;
166 int set_osd_coords_y;
168 /* Current dimensions (NOT VISIBLE SIZE!) */
171 int display_byte_stride;
173 /* Current bits per pixel */
177 /* Frame buffer stuff */
178 struct fb_info ivtvfb_info;
179 struct fb_var_screeninfo ivtvfb_defined;
180 struct fb_fix_screeninfo ivtvfb_fix;
182 /* Used for a warm start */
183 struct fb_var_screeninfo fbvar_cur;
185 u32 palette_cur[256];
189 struct ivtv_osd_coords {
190 unsigned long offset;
191 unsigned long max_offset;
198 /* --------------------------------------------------------------------- */
200 /* ivtv API calls for framebuffer related support */
202 static int ivtvfb_get_framebuffer(struct ivtv *itv, u32 *fbbase,
205 u32 data[CX2341X_MBOX_MAX_DATA];
208 ivtv_firmware_check(itv, "ivtvfb_get_framebuffer");
209 rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0);
215 static int ivtvfb_get_osd_coords(struct ivtv *itv,
216 struct ivtv_osd_coords *osd)
218 struct osd_info *oi = itv->osd_info;
219 u32 data[CX2341X_MBOX_MAX_DATA];
221 ivtv_vapi_result(itv, data, CX2341X_OSD_GET_OSD_COORDS, 0);
223 osd->offset = data[0] - oi->video_rbase;
224 osd->max_offset = oi->display_width * oi->display_height * 4;
225 osd->pixel_stride = data[1];
226 osd->lines = data[2];
232 static int ivtvfb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords *osd)
234 struct osd_info *oi = itv->osd_info;
236 oi->display_width = osd->pixel_stride;
237 oi->display_byte_stride = osd->pixel_stride * oi->bytes_per_pixel;
238 oi->set_osd_coords_x += osd->x;
239 oi->set_osd_coords_y = osd->y;
241 return ivtv_vapi(itv, CX2341X_OSD_SET_OSD_COORDS, 5,
242 osd->offset + oi->video_rbase,
244 osd->lines, osd->x, osd->y);
247 static int ivtvfb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window)
249 int osd_height_limit = itv->is_out_50hz ? 576 : 480;
251 /* Only fail if resolution too high, otherwise fudge the start coords. */
252 if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH))
255 /* Ensure we don't exceed display limits */
256 if (ivtv_window->top + ivtv_window->height > osd_height_limit) {
257 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n",
258 ivtv_window->top, ivtv_window->height);
259 ivtv_window->top = osd_height_limit - ivtv_window->height;
262 if (ivtv_window->left + ivtv_window->width > IVTV_OSD_MAX_WIDTH) {
263 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n",
264 ivtv_window->left, ivtv_window->width);
265 ivtv_window->left = IVTV_OSD_MAX_WIDTH - ivtv_window->width;
268 /* Set the OSD origin */
269 write_reg((ivtv_window->top << 16) | ivtv_window->left, 0x02a04);
271 /* How much to display */
272 write_reg(((ivtv_window->top+ivtv_window->height) << 16) | (ivtv_window->left+ivtv_window->width), 0x02a08);
274 /* Pass this info back the yuv handler */
275 itv->yuv_info.osd_vis_w = ivtv_window->width;
276 itv->yuv_info.osd_vis_h = ivtv_window->height;
277 itv->yuv_info.osd_x_offset = ivtv_window->left;
278 itv->yuv_info.osd_y_offset = ivtv_window->top;
283 static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv,
284 unsigned long ivtv_dest_addr, void __user *userbuf,
290 mutex_lock(&itv->udma.lock);
292 if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
293 mutex_unlock(&itv->udma.lock);
294 IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, "
295 "Error with get_user_pages: %d bytes, %d pages returned\n",
296 size_in_bytes, itv->udma.page_count);
298 /* get_user_pages must have failed completely */
302 IVTVFB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n",
303 size_in_bytes, itv->udma.page_count);
305 ivtv_udma_prepare(itv);
306 prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
307 /* if no UDMA is pending and no UDMA is in progress, then the DMA
309 while (test_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags) ||
310 test_bit(IVTV_F_I_UDMA, &itv->i_flags)) {
311 /* don't interrupt if the DMA is in progress but break off
312 a still pending DMA. */
313 got_sig = signal_pending(current);
314 if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags))
319 finish_wait(&itv->dma_waitq, &wait);
321 /* Unmap Last DMA Xfer */
322 ivtv_udma_unmap(itv);
323 mutex_unlock(&itv->udma.lock);
325 IVTV_DEBUG_INFO("User stopped OSD\n");
332 static int ivtvfb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
333 unsigned long dest_offset, int count)
336 struct osd_info *oi = itv->osd_info;
340 IVTVFB_DEBUG_WARN("ivtvfb_prep_frame: Nothing to do. count = 0\n");
344 /* Check Total FB Size */
345 if ((dest_offset + count) > oi->video_buffer_size) {
346 IVTVFB_WARN("ivtvfb_prep_frame: Overflowing the framebuffer %ld, only %d available\n",
347 dest_offset + count, oi->video_buffer_size);
351 /* Not fatal, but will have undesirable results */
352 if ((unsigned long)source & 3)
353 IVTVFB_WARN("ivtvfb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n",
354 (unsigned long)source);
357 IVTVFB_WARN("ivtvfb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset);
360 IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count);
363 if (!access_ok(VERIFY_READ, source + dest_offset, count)) {
364 IVTVFB_WARN("Invalid userspace pointer 0x%08lx\n",
365 (unsigned long)source);
367 IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source 0x%08lx count %d\n",
368 dest_offset, (unsigned long)source,
373 /* OSD Address to send DMA to */
374 dest_offset += IVTV_DECODER_OFFSET + oi->video_rbase;
377 return ivtvfb_prep_dec_dma_to_device(itv, dest_offset, source, count);
380 static ssize_t ivtvfb_write(struct fb_info *info, const char __user *buf,
381 size_t count, loff_t *ppos)
383 unsigned long p = *ppos;
387 unsigned long total_size;
388 struct ivtv *itv = (struct ivtv *) info->par;
389 unsigned long dma_offset =
390 IVTV_DECODER_OFFSET + itv->osd_info->video_rbase;
391 unsigned long dma_size;
392 u16 lead = 0, tail = 0;
394 if (info->state != FBINFO_STATE_RUNNING)
397 total_size = info->screen_size;
400 total_size = info->fix.smem_len;
405 if (count > total_size) {
410 if (count + p > total_size) {
413 count = total_size - p;
416 dst = (void __force *) (info->screen_base + p);
418 if (info->fbops->fb_sync)
419 info->fbops->fb_sync(info);
421 /* If transfer size > threshold and both src/dst
422 addresses are aligned, use DMA */
424 ((unsigned long)buf & 3) == ((unsigned long)dst & 3)) {
425 /* Odd address = can't DMA. Align */
426 if ((unsigned long)dst & 3) {
427 lead = 4 - ((unsigned long)dst & 3);
428 if (copy_from_user(dst, buf, lead))
433 /* DMA resolution is 32 bits */
434 if ((count - lead) & 3)
435 tail = (count - lead) & 3;
437 dma_size = count - lead - tail;
438 dma_err = ivtvfb_prep_dec_dma_to_device(itv,
439 p + lead + dma_offset, (void __user *)buf, dma_size);
444 /* Copy any leftover data */
445 if (tail && copy_from_user(dst, buf, tail))
447 } else if (copy_from_user(dst, buf, count)) {
454 return (err) ? err : count;
457 static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
460 struct ivtv *itv = (struct ivtv *)info->par;
464 case FBIOGET_VBLANK: {
465 struct fb_vblank vblank;
468 memset(&vblank, 0, sizeof(struct fb_vblank));
470 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
471 FB_VBLANK_HAVE_VSYNC;
472 trace = read_reg(IVTV_REG_DEC_LINE_FIELD) >> 16;
473 if (itv->is_out_50hz && trace > 312)
475 else if (itv->is_out_60hz && trace > 262)
478 vblank.flags |= FB_VBLANK_VSYNCING;
479 vblank.count = itv->last_vsync_field;
480 vblank.vcount = trace;
482 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
487 case FBIO_WAITFORVSYNC:
488 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
489 if (!schedule_timeout(msecs_to_jiffies(50)))
491 finish_wait(&itv->vsync_waitq, &wait);
494 case IVTVFB_IOC_DMA_FRAME: {
495 struct ivtvfb_dma_frame args;
497 IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
498 if (copy_from_user(&args, (void __user *)arg, sizeof(args)))
501 return ivtvfb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count);
505 IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd);
511 /* Framebuffer device handling */
513 static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
515 struct osd_info *oi = itv->osd_info;
516 struct ivtv_osd_coords ivtv_osd;
517 struct v4l2_rect ivtv_window;
520 IVTVFB_DEBUG_INFO("ivtvfb_set_var\n");
522 /* Select color space */
523 if (var->nonstd) /* YUV */
524 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
526 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
528 /* Set the color mode */
529 switch (var->bits_per_pixel) {
531 osd_mode = IVTV_OSD_BPP_8;
534 osd_mode = IVTV_OSD_BPP_32;
537 switch (var->green.length) {
539 osd_mode = IVTV_OSD_BPP_16_444;
542 osd_mode = IVTV_OSD_BPP_16_555;
545 osd_mode = IVTV_OSD_BPP_16_565;
548 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
552 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
555 /* Set video mode. Although rare, the display can become scrambled even
556 if we don't change mode. Always 'bounce' to osd_mode via mode 0 */
557 if (osd_mode != -1) {
558 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
559 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode);
562 oi->bits_per_pixel = var->bits_per_pixel;
563 oi->bytes_per_pixel = var->bits_per_pixel / 8;
565 /* Set the flicker filter */
566 switch (var->vmode & FB_VMODE_MASK) {
567 case FB_VMODE_NONINTERLACED: /* Filter on */
568 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1);
570 case FB_VMODE_INTERLACED: /* Filter off */
571 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0);
574 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
577 /* Read the current osd info */
578 ivtvfb_get_osd_coords(itv, &ivtv_osd);
580 /* Now set the OSD to the size we want */
581 ivtv_osd.pixel_stride = var->xres_virtual;
582 ivtv_osd.lines = var->yres_virtual;
585 ivtvfb_set_osd_coords(itv, &ivtv_osd);
587 /* Can't seem to find the right API combo for this.
588 Use another function which does what we need through direct register access. */
589 ivtv_window.width = var->xres;
590 ivtv_window.height = var->yres;
592 /* Minimum margin cannot be 0, as X won't allow such a mode */
593 if (!var->upper_margin)
595 if (!var->left_margin)
597 ivtv_window.top = var->upper_margin - 1;
598 ivtv_window.left = var->left_margin - 1;
600 ivtvfb_set_display_window(itv, &ivtv_window);
602 /* Pass screen size back to yuv handler */
603 itv->yuv_info.osd_full_w = ivtv_osd.pixel_stride;
604 itv->yuv_info.osd_full_h = ivtv_osd.lines;
606 /* Force update of yuv registers */
607 itv->yuv_info.yuv_forced_update = 1;
609 /* Keep a copy of these settings */
610 memcpy(&oi->fbvar_cur, var, sizeof(oi->fbvar_cur));
612 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
613 var->xres, var->yres,
614 var->xres_virtual, var->yres_virtual,
615 var->bits_per_pixel);
617 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
618 var->left_margin, var->upper_margin);
620 IVTVFB_DEBUG_INFO("Display filter: %s\n",
621 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
622 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
627 static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix)
629 struct osd_info *oi = itv->osd_info;
631 IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n");
632 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
633 strlcpy(fix->id, "cx23415 TV out", sizeof(fix->id));
634 fix->smem_start = oi->video_pbase;
635 fix->smem_len = oi->video_buffer_size;
636 fix->type = FB_TYPE_PACKED_PIXELS;
637 fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
641 fix->line_length = oi->display_byte_stride;
642 fix->accel = FB_ACCEL_NONE;
646 /* Check the requested display mode, returning -EINVAL if we can't
649 static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
651 struct osd_info *oi = itv->osd_info;
652 int osd_height_limit;
653 u32 pixclock, hlimit, vlimit;
655 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
657 /* Set base references for mode calcs. */
658 if (itv->is_out_50hz) {
662 osd_height_limit = 576;
668 osd_height_limit = 480;
671 if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) {
672 var->transp.offset = 24;
673 var->transp.length = 8;
674 var->red.offset = 16;
676 var->green.offset = 8;
677 var->green.length = 8;
678 var->blue.offset = 0;
679 var->blue.length = 8;
681 else if (var->bits_per_pixel == 16) {
682 /* To find out the true mode, check green length */
683 switch (var->green.length) {
687 var->green.offset = 4;
688 var->green.length = 4;
689 var->blue.offset = 0;
690 var->blue.length = 4;
691 var->transp.offset = 12;
692 var->transp.length = 1;
695 var->red.offset = 10;
697 var->green.offset = 5;
698 var->green.length = 5;
699 var->blue.offset = 0;
700 var->blue.length = 5;
701 var->transp.offset = 15;
702 var->transp.length = 1;
705 var->red.offset = 11;
707 var->green.offset = 5;
708 var->green.length = 6;
709 var->blue.offset = 0;
710 var->blue.length = 5;
711 var->transp.offset = 0;
712 var->transp.length = 0;
717 IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
721 /* Check the resolution */
722 if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) {
723 IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n",
724 var->xres, var->yres);
728 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
729 if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) ||
730 var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size ||
731 var->xres_virtual < var->xres ||
732 var->yres_virtual < var->yres) {
733 IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
734 var->xres_virtual, var->yres_virtual);
738 /* Some extra checks if in 8 bit mode */
739 if (var->bits_per_pixel == 8) {
740 /* Width must be a multiple of 4 */
742 IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres);
745 if (var->xres_virtual & 3) {
746 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual);
750 else if (var->bits_per_pixel == 16) {
751 /* Width must be a multiple of 2 */
753 IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres);
756 if (var->xres_virtual & 1) {
757 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual);
762 /* Now check the offsets */
763 if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) {
764 IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
765 var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual);
769 /* Check pixel format */
770 if (var->nonstd > 1) {
771 IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd);
775 /* Check video mode */
776 if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) &&
777 ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) {
778 IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK);
782 /* Check the left & upper margins
783 If the margins are too large, just center the screen
784 (enforcing margins causes too many problems) */
786 if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1)
787 var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
789 if (var->upper_margin + var->yres > (itv->is_out_50hz ? 577 : 481))
790 var->upper_margin = 1 + (((itv->is_out_50hz ? 576 : 480) -
793 /* Maintain overall 'size' for a constant refresh rate */
794 var->right_margin = hlimit - var->left_margin - var->xres;
795 var->lower_margin = vlimit - var->upper_margin - var->yres;
797 /* Fixed sync times */
801 /* Non-interlaced / interlaced mode is used to switch the OSD filter
802 on or off. Adjust the clock timings to maintain a constant
803 vertical refresh rate. */
804 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED)
805 var->pixclock = pixclock / 2;
807 var->pixclock = pixclock;
809 itv->osd_rect.width = var->xres;
810 itv->osd_rect.height = var->yres;
812 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
813 var->xres, var->yres,
814 var->xres_virtual, var->yres_virtual,
815 var->bits_per_pixel);
817 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
818 var->left_margin, var->upper_margin);
820 IVTVFB_DEBUG_INFO("Display filter: %s\n",
821 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
822 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
826 static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
828 struct ivtv *itv = (struct ivtv *) info->par;
829 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
830 return _ivtvfb_check_var(var, itv);
833 static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
836 struct ivtv *itv = (struct ivtv *) info->par;
838 if (var->yoffset + info->var.yres > info->var.yres_virtual ||
839 var->xoffset + info->var.xres > info->var.xres_virtual)
842 osd_pan_index = var->yoffset * info->fix.line_length
843 + var->xoffset * info->var.bits_per_pixel / 8;
844 write_reg(osd_pan_index, 0x02A0C);
846 /* Pass this info back the yuv handler */
847 itv->yuv_info.osd_x_pan = var->xoffset;
848 itv->yuv_info.osd_y_pan = var->yoffset;
849 /* Force update of yuv registers */
850 itv->yuv_info.yuv_forced_update = 1;
851 /* Remember this value */
852 itv->osd_info->pan_cur = osd_pan_index;
856 static int ivtvfb_set_par(struct fb_info *info)
859 struct ivtv *itv = (struct ivtv *) info->par;
861 IVTVFB_DEBUG_INFO("ivtvfb_set_par\n");
863 rc = ivtvfb_set_var(itv, &info->var);
864 ivtvfb_pan_display(&info->var, info);
865 ivtvfb_get_fix(itv, &info->fix);
866 ivtv_firmware_check(itv, "ivtvfb_set_par");
870 static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
871 unsigned blue, unsigned transp,
872 struct fb_info *info)
875 struct ivtv *itv = (struct ivtv *)info->par;
877 if (regno >= info->cmap.len)
880 color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8);
881 if (info->var.bits_per_pixel <= 8) {
882 write_reg(regno, 0x02a30);
883 write_reg(color, 0x02a34);
884 itv->osd_info->palette_cur[regno] = color;
890 palette = info->pseudo_palette;
891 if (info->var.bits_per_pixel == 16) {
892 switch (info->var.green.length) {
894 color = ((red & 0xf000) >> 4) |
895 ((green & 0xf000) >> 8) |
896 ((blue & 0xf000) >> 12);
899 color = ((red & 0xf800) >> 1) |
900 ((green & 0xf800) >> 6) |
901 ((blue & 0xf800) >> 11);
904 color = (red & 0xf800 ) |
905 ((green & 0xfc00) >> 5) |
906 ((blue & 0xf800) >> 11);
910 palette[regno] = color;
914 /* We don't really support blanking. All this does is enable or
916 static int ivtvfb_blank(int blank_mode, struct fb_info *info)
918 struct ivtv *itv = (struct ivtv *)info->par;
920 IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode);
921 switch (blank_mode) {
922 case FB_BLANK_UNBLANK:
923 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
924 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
926 case FB_BLANK_NORMAL:
927 case FB_BLANK_HSYNC_SUSPEND:
928 case FB_BLANK_VSYNC_SUSPEND:
929 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
930 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1);
932 case FB_BLANK_POWERDOWN:
933 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0);
934 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
937 itv->osd_info->blank_cur = blank_mode;
941 static struct fb_ops ivtvfb_ops = {
942 .owner = THIS_MODULE,
943 .fb_write = ivtvfb_write,
944 .fb_check_var = ivtvfb_check_var,
945 .fb_set_par = ivtvfb_set_par,
946 .fb_setcolreg = ivtvfb_setcolreg,
947 .fb_fillrect = cfb_fillrect,
948 .fb_copyarea = cfb_copyarea,
949 .fb_imageblit = cfb_imageblit,
951 .fb_ioctl = ivtvfb_ioctl,
952 .fb_pan_display = ivtvfb_pan_display,
953 .fb_blank = ivtvfb_blank,
956 /* Restore hardware after firmware restart */
957 static void ivtvfb_restore(struct ivtv *itv)
959 struct osd_info *oi = itv->osd_info;
962 ivtvfb_set_var(itv, &oi->fbvar_cur);
963 ivtvfb_blank(oi->blank_cur, &oi->ivtvfb_info);
964 for (i = 0; i < 256; i++) {
965 write_reg(i, 0x02a30);
966 write_reg(oi->palette_cur[i], 0x02a34);
968 write_reg(oi->pan_cur, 0x02a0c);
974 /* Setup our initial video mode */
975 static int ivtvfb_init_vidmode(struct ivtv *itv)
977 struct osd_info *oi = itv->osd_info;
978 struct v4l2_rect start_window;
983 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32)
985 oi->bits_per_pixel = osd_depth;
986 oi->bytes_per_pixel = oi->bits_per_pixel / 8;
988 /* Horizontal size & position */
993 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
996 else if (osd_depth == 16)
999 start_window.width = osd_xres ? osd_xres : 640;
1001 /* Check horizontal start (osd_left). */
1002 if (osd_left && osd_left + start_window.width > 721) {
1003 IVTVFB_ERR("Invalid osd_left - assuming default\n");
1007 /* Hardware coords start at 0, user coords start at 1. */
1010 start_window.left = osd_left >= 0 ?
1011 osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
1013 oi->display_byte_stride =
1014 start_window.width * oi->bytes_per_pixel;
1016 /* Vertical size & position */
1018 max_height = itv->is_out_50hz ? 576 : 480;
1020 if (osd_yres > max_height)
1021 osd_yres = max_height;
1023 start_window.height = osd_yres ?
1024 osd_yres : itv->is_out_50hz ? 480 : 400;
1026 /* Check vertical start (osd_upper). */
1027 if (osd_upper + start_window.height > max_height + 1) {
1028 IVTVFB_ERR("Invalid osd_upper - assuming default\n");
1032 /* Hardware coords start at 0, user coords start at 1. */
1035 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
1037 oi->display_width = start_window.width;
1038 oi->display_height = start_window.height;
1040 /* Generate a valid fb_var_screeninfo */
1042 oi->ivtvfb_defined.xres = oi->display_width;
1043 oi->ivtvfb_defined.yres = oi->display_height;
1044 oi->ivtvfb_defined.xres_virtual = oi->display_width;
1045 oi->ivtvfb_defined.yres_virtual = oi->display_height;
1046 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
1047 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
1048 oi->ivtvfb_defined.left_margin = start_window.left + 1;
1049 oi->ivtvfb_defined.upper_margin = start_window.top + 1;
1050 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
1051 oi->ivtvfb_defined.nonstd = 0;
1053 /* We've filled in the most data, let the usual mode check
1054 routine fill in the rest. */
1055 _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
1057 /* Generate valid fb_fix_screeninfo */
1059 ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
1061 /* Generate valid fb_info */
1063 oi->ivtvfb_info.node = -1;
1064 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
1065 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1066 oi->ivtvfb_info.par = itv;
1067 oi->ivtvfb_info.var = oi->ivtvfb_defined;
1068 oi->ivtvfb_info.fix = oi->ivtvfb_fix;
1069 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
1070 oi->ivtvfb_info.fbops = &ivtvfb_ops;
1072 /* Supply some monitor specs. Bogus values will do for now */
1073 oi->ivtvfb_info.monspecs.hfmin = 8000;
1074 oi->ivtvfb_info.monspecs.hfmax = 70000;
1075 oi->ivtvfb_info.monspecs.vfmin = 10;
1076 oi->ivtvfb_info.monspecs.vfmax = 100;
1078 /* Allocate color map */
1079 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
1080 IVTVFB_ERR("abort, unable to alloc cmap\n");
1084 /* Allocate the pseudo palette */
1085 oi->ivtvfb_info.pseudo_palette =
1086 kmalloc(sizeof(u32) * 16, GFP_KERNEL|__GFP_NOWARN);
1088 if (!oi->ivtvfb_info.pseudo_palette) {
1089 IVTVFB_ERR("abort, unable to alloc pseudo palette\n");
1096 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
1098 static int ivtvfb_init_io(struct ivtv *itv)
1100 struct osd_info *oi = itv->osd_info;
1101 /* Find the largest power of two that maps the whole buffer */
1102 int size_shift = 31;
1104 mutex_lock(&itv->serialize_lock);
1105 if (ivtv_init_on_first_open(itv)) {
1106 mutex_unlock(&itv->serialize_lock);
1107 IVTVFB_ERR("Failed to initialize ivtv\n");
1110 mutex_unlock(&itv->serialize_lock);
1112 if (ivtvfb_get_framebuffer(itv, &oi->video_rbase,
1113 &oi->video_buffer_size) < 0) {
1114 IVTVFB_ERR("Firmware failed to respond\n");
1118 /* The osd buffer size depends on the number of video buffers allocated
1119 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
1120 size to prevent any overlap. */
1121 oi->video_buffer_size = 1704960;
1123 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
1124 oi->video_vbase = itv->dec_mem + oi->video_rbase;
1126 if (!oi->video_vbase) {
1127 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
1128 oi->video_buffer_size, oi->video_pbase);
1132 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
1133 oi->video_pbase, oi->video_vbase,
1134 oi->video_buffer_size / 1024);
1136 while (!(oi->video_buffer_size & (1 << size_shift)))
1139 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
1140 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
1141 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
1142 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
1143 oi->wc_cookie = arch_phys_wc_add(oi->fb_start_aligned_physaddr,
1144 oi->fb_end_aligned_physaddr -
1145 oi->fb_start_aligned_physaddr);
1146 /* Blank the entire osd. */
1147 memset_io(oi->video_vbase, 0, oi->video_buffer_size);
1152 /* Release any memory we've grabbed & remove mtrr entry */
1153 static void ivtvfb_release_buffers (struct ivtv *itv)
1155 struct osd_info *oi = itv->osd_info;
1158 if (oi->ivtvfb_info.cmap.len)
1159 fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
1161 /* Release pseudo palette */
1162 kfree(oi->ivtvfb_info.pseudo_palette);
1163 arch_phys_wc_del(oi->wc_cookie);
1165 itv->osd_info = NULL;
1168 /* Initialize the specified card */
1170 static int ivtvfb_init_card(struct ivtv *itv)
1174 if (itv->osd_info) {
1175 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id);
1179 itv->osd_info = kzalloc(sizeof(struct osd_info),
1180 GFP_ATOMIC|__GFP_NOWARN);
1181 if (itv->osd_info == NULL) {
1182 IVTVFB_ERR("Failed to allocate memory for osd_info\n");
1186 /* Find & setup the OSD buffer */
1187 rc = ivtvfb_init_io(itv);
1189 ivtvfb_release_buffers(itv);
1193 /* Set the startup video mode information */
1194 if ((rc = ivtvfb_init_vidmode(itv))) {
1195 ivtvfb_release_buffers(itv);
1199 /* Register the framebuffer */
1200 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
1201 ivtvfb_release_buffers(itv);
1205 itv->osd_video_pbase = itv->osd_info->video_pbase;
1207 /* Set the card to the requested mode */
1208 ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
1210 /* Set color 0 to black */
1211 write_reg(0, 0x02a30);
1212 write_reg(0, 0x02a34);
1214 /* Enable the osd */
1215 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
1217 /* Enable restart */
1218 itv->ivtvfb_restore = ivtvfb_restore;
1221 ivtv_udma_alloc(itv);
1226 static int __init ivtvfb_callback_init(struct device *dev, void *p)
1228 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
1229 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
1231 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1232 if (ivtvfb_init_card(itv) == 0) {
1233 IVTVFB_INFO("Framebuffer registered on %s\n",
1234 itv->v4l2_dev.name);
1241 static int ivtvfb_callback_cleanup(struct device *dev, void *p)
1243 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
1244 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
1245 struct osd_info *oi = itv->osd_info;
1247 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
1248 if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
1249 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n",
1253 IVTVFB_INFO("Unregister framebuffer %d\n", itv->instance);
1254 itv->ivtvfb_restore = NULL;
1255 ivtvfb_blank(FB_BLANK_VSYNC_SUSPEND, &oi->ivtvfb_info);
1256 ivtvfb_release_buffers(itv);
1257 itv->osd_video_pbase = 0;
1262 static int __init ivtvfb_init(void)
1264 struct device_driver *drv;
1268 #ifdef CONFIG_X86_64
1269 if (WARN(pat_enabled(),
1270 "ivtvfb needs PAT disabled, boot with nopat kernel parameter\n")) {
1275 if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) {
1276 printk(KERN_ERR "ivtvfb: ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n",
1277 IVTV_MAX_CARDS - 1);
1281 drv = driver_find("ivtv", &pci_bus_type);
1282 err = driver_for_each_device(drv, NULL, ®istered, ivtvfb_callback_init);
1283 (void)err; /* suppress compiler warning */
1285 printk(KERN_ERR "ivtvfb: no cards found\n");
1291 static void ivtvfb_cleanup(void)
1293 struct device_driver *drv;
1296 printk(KERN_INFO "ivtvfb: Unloading framebuffer module\n");
1298 drv = driver_find("ivtv", &pci_bus_type);
1299 err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup);
1300 (void)err; /* suppress compiler warning */
1303 module_init(ivtvfb_init);
1304 module_exit(ivtvfb_cleanup);