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 int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
373 struct ivtv *itv = (struct ivtv *)info->par;
377 case FBIOGET_VBLANK: {
378 struct fb_vblank vblank;
381 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT |
382 FB_VBLANK_HAVE_VSYNC;
383 trace = read_reg(0x028c0) >> 16;
384 if (itv->is_50hz && trace > 312) trace -= 312;
385 else if (itv->is_60hz && trace > 262) trace -= 262;
386 if (trace == 1) vblank.flags |= FB_VBLANK_VSYNCING;
387 vblank.count = itv->last_vsync_field;
388 vblank.vcount = trace;
390 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
395 case FBIO_WAITFORVSYNC:
396 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE);
397 if (!schedule_timeout(msecs_to_jiffies(50))) rc = -ETIMEDOUT;
398 finish_wait(&itv->vsync_waitq, &wait);
401 case IVTVFB_IOC_DMA_FRAME: {
402 struct ivtvfb_dma_frame args;
404 IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
405 if (copy_from_user(&args, (void __user *)arg, sizeof(args)))
408 return ivtvfb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count);
412 IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd);
418 /* Framebuffer device handling */
420 static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
422 struct osd_info *oi = itv->osd_info;
423 struct ivtv_osd_coords ivtv_osd;
424 struct v4l2_rect ivtv_window;
427 IVTVFB_DEBUG_INFO("ivtvfb_set_var\n");
429 /* Select color space */
430 if (var->nonstd) /* YUV */
431 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
433 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
435 /* Set the color mode */
436 switch (var->bits_per_pixel) {
438 osd_mode = IVTV_OSD_BPP_8;
441 osd_mode = IVTV_OSD_BPP_32;
444 switch (var->green.length) {
446 osd_mode = IVTV_OSD_BPP_16_444;
449 osd_mode = IVTV_OSD_BPP_16_555;
452 osd_mode = IVTV_OSD_BPP_16_565;
455 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
459 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
462 /* Set video mode. Although rare, the display can become scrambled even
463 if we don't change mode. Always 'bounce' to osd_mode via mode 0 */
464 if (osd_mode != -1) {
465 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
466 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode);
469 oi->bits_per_pixel = var->bits_per_pixel;
470 oi->bytes_per_pixel = var->bits_per_pixel / 8;
472 /* Set the flicker filter */
473 switch (var->vmode & FB_VMODE_MASK) {
474 case FB_VMODE_NONINTERLACED: /* Filter on */
475 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1);
477 case FB_VMODE_INTERLACED: /* Filter off */
478 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0);
481 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
484 /* Read the current osd info */
485 ivtvfb_get_osd_coords(itv, &ivtv_osd);
487 /* Now set the OSD to the size we want */
488 ivtv_osd.pixel_stride = var->xres_virtual;
489 ivtv_osd.lines = var->yres_virtual;
492 ivtvfb_set_osd_coords(itv, &ivtv_osd);
494 /* Can't seem to find the right API combo for this.
495 Use another function which does what we need through direct register access. */
496 ivtv_window.width = var->xres;
497 ivtv_window.height = var->yres;
499 /* Minimum margin cannot be 0, as X won't allow such a mode */
500 if (!var->upper_margin) var->upper_margin++;
501 if (!var->left_margin) var->left_margin++;
502 ivtv_window.top = var->upper_margin - 1;
503 ivtv_window.left = var->left_margin - 1;
505 ivtvfb_set_display_window(itv, &ivtv_window);
507 /* Pass screen size back to yuv handler */
508 itv->yuv_info.osd_full_w = ivtv_osd.pixel_stride;
509 itv->yuv_info.osd_full_h = ivtv_osd.lines;
511 /* Force update of yuv registers */
512 itv->yuv_info.yuv_forced_update = 1;
514 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
515 var->xres, var->yres,
516 var->xres_virtual, var->yres_virtual,
517 var->bits_per_pixel);
519 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
520 var->left_margin, var->upper_margin);
522 IVTVFB_DEBUG_INFO("Display filter: %s\n",
523 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
524 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
529 static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix)
531 struct osd_info *oi = itv->osd_info;
533 IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n");
534 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
535 strlcpy(fix->id, "cx23415 TV out", sizeof(fix->id));
536 fix->smem_start = oi->video_pbase;
537 fix->smem_len = oi->video_buffer_size;
538 fix->type = FB_TYPE_PACKED_PIXELS;
539 fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
543 fix->line_length = oi->display_byte_stride;
544 fix->accel = FB_ACCEL_NONE;
548 /* Check the requested display mode, returning -EINVAL if we can't
551 static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv)
553 struct osd_info *oi = itv->osd_info;
554 int osd_height_limit;
555 u32 pixclock, hlimit, vlimit;
557 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
559 /* Set base references for mode calcs. */
564 osd_height_limit = 576;
570 osd_height_limit = 480;
573 if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) {
574 var->transp.offset = 24;
575 var->transp.length = 8;
576 var->red.offset = 16;
578 var->green.offset = 8;
579 var->green.length = 8;
580 var->blue.offset = 0;
581 var->blue.length = 8;
583 else if (var->bits_per_pixel == 16) {
584 /* To find out the true mode, check green length */
585 switch (var->green.length) {
589 var->green.offset = 4;
590 var->green.length = 4;
591 var->blue.offset = 0;
592 var->blue.length = 4;
593 var->transp.offset = 12;
594 var->transp.length = 1;
597 var->red.offset = 10;
599 var->green.offset = 5;
600 var->green.length = 5;
601 var->blue.offset = 0;
602 var->blue.length = 5;
603 var->transp.offset = 15;
604 var->transp.length = 1;
607 var->red.offset = 11;
609 var->green.offset = 5;
610 var->green.length = 6;
611 var->blue.offset = 0;
612 var->blue.length = 5;
613 var->transp.offset = 0;
614 var->transp.length = 0;
619 IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel);
623 /* Check the resolution */
624 if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) {
625 IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n",
626 var->xres, var->yres);
630 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
631 if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) ||
632 var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size ||
633 var->xres_virtual < var->xres ||
634 var->yres_virtual < var->yres) {
635 IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
636 var->xres_virtual, var->yres_virtual);
640 /* Some extra checks if in 8 bit mode */
641 if (var->bits_per_pixel == 8) {
642 /* Width must be a multiple of 4 */
644 IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres);
647 if (var->xres_virtual & 3) {
648 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual);
652 else if (var->bits_per_pixel == 16) {
653 /* Width must be a multiple of 2 */
655 IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres);
658 if (var->xres_virtual & 1) {
659 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual);
664 /* Now check the offsets */
665 if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) {
666 IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
667 var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual);
671 /* Check pixel format */
672 if (var->nonstd > 1) {
673 IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd);
677 /* Check video mode */
678 if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) &&
679 ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) {
680 IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK);
684 /* Check the left & upper margins
685 If the margins are too large, just center the screen
686 (enforcing margins causes too many problems) */
688 if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1) {
689 var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2);
691 if (var->upper_margin + var->yres > (itv->is_50hz ? 577 : 481)) {
692 var->upper_margin = 1 + (((itv->is_50hz ? 576 : 480) - var->yres) / 2);
695 /* Maintain overall 'size' for a constant refresh rate */
696 var->right_margin = hlimit - var->left_margin - var->xres;
697 var->lower_margin = vlimit - var->upper_margin - var->yres;
699 /* Fixed sync times */
703 /* Non-interlaced / interlaced mode is used to switch the OSD filter
704 on or off. Adjust the clock timings to maintain a constant
705 vertical refresh rate. */
706 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED)
707 var->pixclock = pixclock / 2;
709 var->pixclock = pixclock;
711 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
712 var->xres, var->yres,
713 var->xres_virtual, var->yres_virtual,
714 var->bits_per_pixel);
716 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
717 var->left_margin, var->upper_margin);
719 IVTVFB_DEBUG_INFO("Display filter: %s\n",
720 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off");
721 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB");
725 static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
727 struct ivtv *itv = (struct ivtv *) info->par;
728 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
729 return _ivtvfb_check_var(var, itv);
732 static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
735 struct ivtv *itv = (struct ivtv *) info->par;
737 osd_pan_index = (var->xoffset + (var->yoffset * var->xres_virtual))*var->bits_per_pixel/8;
738 write_reg(osd_pan_index, 0x02A0C);
740 /* Pass this info back the yuv handler */
741 itv->yuv_info.osd_x_pan = var->xoffset;
742 itv->yuv_info.osd_y_pan = var->yoffset;
743 /* Force update of yuv registers */
744 itv->yuv_info.yuv_forced_update = 1;
748 static int ivtvfb_set_par(struct fb_info *info)
751 struct ivtv *itv = (struct ivtv *) info->par;
753 IVTVFB_DEBUG_INFO("ivtvfb_set_par\n");
755 rc = ivtvfb_set_var(itv, &info->var);
756 ivtvfb_pan_display(&info->var, info);
757 ivtvfb_get_fix(itv, &info->fix);
761 static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green,
762 unsigned blue, unsigned transp,
763 struct fb_info *info)
766 struct ivtv *itv = (struct ivtv *)info->par;
768 if (regno >= info->cmap.len)
771 color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8);
772 if (info->var.bits_per_pixel <= 8) {
773 write_reg(regno, 0x02a30);
774 write_reg(color, 0x02a34);
780 palette = info->pseudo_palette;
781 if (info->var.bits_per_pixel == 16) {
782 switch (info->var.green.length) {
784 color = ((red & 0xf000) >> 4) |
785 ((green & 0xf000) >> 8) |
786 ((blue & 0xf000) >> 12);
789 color = ((red & 0xf800) >> 1) |
790 ((green & 0xf800) >> 6) |
791 ((blue & 0xf800) >> 11);
794 color = (red & 0xf800 ) |
795 ((green & 0xfc00) >> 5) |
796 ((blue & 0xf800) >> 11);
800 palette[regno] = color;
804 /* We don't really support blanking. All this does is enable or
806 static int ivtvfb_blank(int blank_mode, struct fb_info *info)
808 struct ivtv *itv = (struct ivtv *)info->par;
810 IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode);
811 switch (blank_mode) {
812 case FB_BLANK_UNBLANK:
813 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
815 case FB_BLANK_NORMAL:
816 case FB_BLANK_HSYNC_SUSPEND:
817 case FB_BLANK_VSYNC_SUSPEND:
818 case FB_BLANK_POWERDOWN:
819 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
825 static struct fb_ops ivtvfb_ops = {
826 .owner = THIS_MODULE,
827 .fb_check_var = ivtvfb_check_var,
828 .fb_set_par = ivtvfb_set_par,
829 .fb_setcolreg = ivtvfb_setcolreg,
830 .fb_fillrect = cfb_fillrect,
831 .fb_copyarea = cfb_copyarea,
832 .fb_imageblit = cfb_imageblit,
834 .fb_ioctl = ivtvfb_ioctl,
835 .fb_pan_display = ivtvfb_pan_display,
836 .fb_blank = ivtvfb_blank,
842 /* Setup our initial video mode */
843 static int ivtvfb_init_vidmode(struct ivtv *itv)
845 struct osd_info *oi = itv->osd_info;
846 struct v4l2_rect start_window;
851 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32)
853 oi->bits_per_pixel = osd_depth;
854 oi->bytes_per_pixel = oi->bits_per_pixel / 8;
856 /* Horizontal size & position */
861 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
864 else if (osd_depth == 16)
867 start_window.width = osd_xres ? osd_xres : 640;
869 /* Check horizontal start (osd_left). */
870 if (osd_left && osd_left + start_window.width > 721) {
871 IVTVFB_ERR("Invalid osd_left - assuming default\n");
875 /* Hardware coords start at 0, user coords start at 1. */
878 start_window.left = osd_left >= 0 ? osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2);
880 oi->display_byte_stride =
881 start_window.width * oi->bytes_per_pixel;
883 /* Vertical size & position */
885 max_height = itv->is_50hz ? 576 : 480;
887 if (osd_yres > max_height)
888 osd_yres = max_height;
890 start_window.height = osd_yres ? osd_yres : itv->is_50hz ? 480 : 400;
892 /* Check vertical start (osd_upper). */
893 if (osd_upper + start_window.height > max_height + 1) {
894 IVTVFB_ERR("Invalid osd_upper - assuming default\n");
898 /* Hardware coords start at 0, user coords start at 1. */
901 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2);
903 oi->display_width = start_window.width;
904 oi->display_height = start_window.height;
906 /* Generate a valid fb_var_screeninfo */
908 oi->ivtvfb_defined.xres = oi->display_width;
909 oi->ivtvfb_defined.yres = oi->display_height;
910 oi->ivtvfb_defined.xres_virtual = oi->display_width;
911 oi->ivtvfb_defined.yres_virtual = oi->display_height;
912 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel;
913 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED);
914 oi->ivtvfb_defined.left_margin = start_window.left + 1;
915 oi->ivtvfb_defined.upper_margin = start_window.top + 1;
916 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE;
917 oi->ivtvfb_defined.nonstd = 0;
919 /* We've filled in the most data, let the usual mode check
920 routine fill in the rest. */
921 _ivtvfb_check_var(&oi->ivtvfb_defined, itv);
923 /* Generate valid fb_fix_screeninfo */
925 ivtvfb_get_fix(itv, &oi->ivtvfb_fix);
927 /* Generate valid fb_info */
929 oi->ivtvfb_info.node = -1;
930 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
931 oi->ivtvfb_info.fbops = &ivtvfb_ops;
932 oi->ivtvfb_info.par = itv;
933 oi->ivtvfb_info.var = oi->ivtvfb_defined;
934 oi->ivtvfb_info.fix = oi->ivtvfb_fix;
935 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase;
936 oi->ivtvfb_info.fbops = &ivtvfb_ops;
938 /* Supply some monitor specs. Bogus values will do for now */
939 oi->ivtvfb_info.monspecs.hfmin = 8000;
940 oi->ivtvfb_info.monspecs.hfmax = 70000;
941 oi->ivtvfb_info.monspecs.vfmin = 10;
942 oi->ivtvfb_info.monspecs.vfmax = 100;
944 /* Allocate color map */
945 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) {
946 IVTVFB_ERR("abort, unable to alloc cmap\n");
950 /* Allocate the pseudo palette */
951 oi->ivtvfb_info.pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
953 if (!oi->ivtvfb_info.pseudo_palette) {
954 IVTVFB_ERR("abort, unable to alloc pseudo pallete\n");
961 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
963 static int ivtvfb_init_io(struct ivtv *itv)
965 struct osd_info *oi = itv->osd_info;
967 mutex_lock(&itv->serialize_lock);
968 if (ivtv_init_on_first_open(itv)) {
969 mutex_unlock(&itv->serialize_lock);
970 IVTVFB_ERR("Failed to initialize ivtv\n");
973 mutex_unlock(&itv->serialize_lock);
975 ivtvfb_get_framebuffer(itv, &oi->video_rbase, &oi->video_buffer_size);
977 /* The osd buffer size depends on the number of video buffers allocated
978 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
979 size to prevent any overlap. */
980 oi->video_buffer_size = 1704960;
982 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase;
983 oi->video_vbase = itv->dec_mem + oi->video_rbase;
985 if (!oi->video_vbase) {
986 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
987 oi->video_buffer_size, oi->video_pbase);
991 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
992 oi->video_pbase, oi->video_vbase,
993 oi->video_buffer_size / 1024);
997 /* Find the largest power of two that maps the whole buffer */
1000 while (!(oi->video_buffer_size & (1 << size_shift))) {
1004 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1);
1005 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size;
1006 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1;
1007 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1);
1008 if (mtrr_add(oi->fb_start_aligned_physaddr,
1009 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr,
1010 MTRR_TYPE_WRCOMB, 1) < 0) {
1011 IVTVFB_INFO("disabled mttr\n");
1012 oi->fb_start_aligned_physaddr = 0;
1013 oi->fb_end_aligned_physaddr = 0;
1018 /* Blank the entire osd. */
1019 memset_io(oi->video_vbase, 0, oi->video_buffer_size);
1024 /* Release any memory we've grabbed & remove mtrr entry */
1025 static void ivtvfb_release_buffers (struct ivtv *itv)
1027 struct osd_info *oi = itv->osd_info;
1030 if (oi->ivtvfb_info.cmap.len)
1031 fb_dealloc_cmap(&oi->ivtvfb_info.cmap);
1033 /* Release pseudo palette */
1034 if (oi->ivtvfb_info.pseudo_palette)
1035 kfree(oi->ivtvfb_info.pseudo_palette);
1038 if (oi->fb_end_aligned_physaddr) {
1039 mtrr_del(-1, oi->fb_start_aligned_physaddr,
1040 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr);
1045 itv->osd_info = NULL;
1048 /* Initialize the specified card */
1050 static int ivtvfb_init_card(struct ivtv *itv)
1054 if (itv->osd_info) {
1055 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id);
1059 itv->osd_info = kzalloc(sizeof(struct osd_info), GFP_ATOMIC);
1060 if (itv->osd_info == NULL) {
1061 IVTVFB_ERR("Failed to allocate memory for osd_info\n");
1065 /* Find & setup the OSD buffer */
1066 if ((rc = ivtvfb_init_io(itv)))
1069 /* Set the startup video mode information */
1070 if ((rc = ivtvfb_init_vidmode(itv))) {
1071 ivtvfb_release_buffers(itv);
1075 /* Register the framebuffer */
1076 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) {
1077 ivtvfb_release_buffers(itv);
1081 itv->osd_video_pbase = itv->osd_info->video_pbase;
1083 /* Set the card to the requested mode */
1084 ivtvfb_set_par(&itv->osd_info->ivtvfb_info);
1086 /* Set color 0 to black */
1087 write_reg(0, 0x02a30);
1088 write_reg(0, 0x02a34);
1090 /* Enable the osd */
1091 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info);
1094 ivtv_udma_alloc(itv);
1099 static int __init ivtvfb_init(void)
1102 int i, registered = 0;
1104 if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) {
1105 printk(KERN_ERR "ivtvfb: ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n",
1106 IVTV_MAX_CARDS - 1);
1110 /* Locate & initialise all cards supporting an OSD. */
1111 for (i = 0; i < ivtv_cards_active; i++) {
1112 if (ivtvfb_card_id != -1 && i != ivtvfb_card_id)
1114 itv = ivtv_cards[i];
1115 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
1116 if (ivtvfb_init_card(itv) == 0) {
1117 IVTVFB_INFO("Framebuffer registered on ivtv card id %d\n", i);
1123 printk(KERN_ERR "ivtvfb: no cards found");
1129 static void ivtvfb_cleanup(void)
1134 printk(KERN_INFO "ivtvfb: Unloading framebuffer module\n");
1136 for (i = 0; i < ivtv_cards_active; i++) {
1137 itv = ivtv_cards[i];
1138 if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) && itv->osd_info) {
1139 if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
1140 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n", i);
1143 IVTVFB_DEBUG_INFO("Unregister framebuffer %d\n", i);
1144 ivtvfb_blank(FB_BLANK_POWERDOWN, &itv->osd_info->ivtvfb_info);
1145 ivtvfb_release_buffers(itv);
1146 itv->osd_video_pbase = 0;
1151 module_init(ivtvfb_init);
1152 module_exit(ivtvfb_cleanup);