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;
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
;
159 /* video_base rounded down as required by hardware MTRRs */
160 unsigned long fb_start_aligned_physaddr
;
161 /* video_base rounded up as required by hardware MTRRs */
162 unsigned long fb_end_aligned_physaddr
;
165 /* Store the buffer offset */
166 int set_osd_coords_x
;
167 int set_osd_coords_y
;
169 /* Current dimensions (NOT VISIBLE SIZE!) */
172 int display_byte_stride
;
174 /* Current bits per pixel */
178 /* Frame buffer stuff */
179 struct fb_info ivtvfb_info
;
180 struct fb_var_screeninfo ivtvfb_defined
;
181 struct fb_fix_screeninfo ivtvfb_fix
;
183 /* Used for a warm start */
184 struct fb_var_screeninfo fbvar_cur
;
186 u32 palette_cur
[256];
190 struct ivtv_osd_coords
{
191 unsigned long offset
;
192 unsigned long max_offset
;
199 /* --------------------------------------------------------------------- */
201 /* ivtv API calls for framebuffer related support */
203 static int ivtvfb_get_framebuffer(struct ivtv
*itv
, u32
*fbbase
,
206 u32 data
[CX2341X_MBOX_MAX_DATA
];
209 ivtv_firmware_check(itv
, "ivtvfb_get_framebuffer");
210 rc
= ivtv_vapi_result(itv
, data
, CX2341X_OSD_GET_FRAMEBUFFER
, 0);
216 static int ivtvfb_get_osd_coords(struct ivtv
*itv
,
217 struct ivtv_osd_coords
*osd
)
219 struct osd_info
*oi
= itv
->osd_info
;
220 u32 data
[CX2341X_MBOX_MAX_DATA
];
222 ivtv_vapi_result(itv
, data
, CX2341X_OSD_GET_OSD_COORDS
, 0);
224 osd
->offset
= data
[0] - oi
->video_rbase
;
225 osd
->max_offset
= oi
->display_width
* oi
->display_height
* 4;
226 osd
->pixel_stride
= data
[1];
227 osd
->lines
= data
[2];
233 static int ivtvfb_set_osd_coords(struct ivtv
*itv
, const struct ivtv_osd_coords
*osd
)
235 struct osd_info
*oi
= itv
->osd_info
;
237 oi
->display_width
= osd
->pixel_stride
;
238 oi
->display_byte_stride
= osd
->pixel_stride
* oi
->bytes_per_pixel
;
239 oi
->set_osd_coords_x
+= osd
->x
;
240 oi
->set_osd_coords_y
= osd
->y
;
242 return ivtv_vapi(itv
, CX2341X_OSD_SET_OSD_COORDS
, 5,
243 osd
->offset
+ oi
->video_rbase
,
245 osd
->lines
, osd
->x
, osd
->y
);
248 static int ivtvfb_set_display_window(struct ivtv
*itv
, struct v4l2_rect
*ivtv_window
)
250 int osd_height_limit
= itv
->is_out_50hz
? 576 : 480;
252 /* Only fail if resolution too high, otherwise fudge the start coords. */
253 if ((ivtv_window
->height
> osd_height_limit
) || (ivtv_window
->width
> IVTV_OSD_MAX_WIDTH
))
256 /* Ensure we don't exceed display limits */
257 if (ivtv_window
->top
+ ivtv_window
->height
> osd_height_limit
) {
258 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n",
259 ivtv_window
->top
, ivtv_window
->height
);
260 ivtv_window
->top
= osd_height_limit
- ivtv_window
->height
;
263 if (ivtv_window
->left
+ ivtv_window
->width
> IVTV_OSD_MAX_WIDTH
) {
264 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n",
265 ivtv_window
->left
, ivtv_window
->width
);
266 ivtv_window
->left
= IVTV_OSD_MAX_WIDTH
- ivtv_window
->width
;
269 /* Set the OSD origin */
270 write_reg((ivtv_window
->top
<< 16) | ivtv_window
->left
, 0x02a04);
272 /* How much to display */
273 write_reg(((ivtv_window
->top
+ivtv_window
->height
) << 16) | (ivtv_window
->left
+ivtv_window
->width
), 0x02a08);
275 /* Pass this info back the yuv handler */
276 itv
->yuv_info
.osd_vis_w
= ivtv_window
->width
;
277 itv
->yuv_info
.osd_vis_h
= ivtv_window
->height
;
278 itv
->yuv_info
.osd_x_offset
= ivtv_window
->left
;
279 itv
->yuv_info
.osd_y_offset
= ivtv_window
->top
;
284 static int ivtvfb_prep_dec_dma_to_device(struct ivtv
*itv
,
285 unsigned long ivtv_dest_addr
, void __user
*userbuf
,
291 mutex_lock(&itv
->udma
.lock
);
293 if (ivtv_udma_setup(itv
, ivtv_dest_addr
, userbuf
, size_in_bytes
) <= 0) {
294 mutex_unlock(&itv
->udma
.lock
);
295 IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, "
296 "Error with get_user_pages: %d bytes, %d pages returned\n",
297 size_in_bytes
, itv
->udma
.page_count
);
299 /* get_user_pages must have failed completely */
303 IVTVFB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n",
304 size_in_bytes
, itv
->udma
.page_count
);
306 ivtv_udma_prepare(itv
);
307 prepare_to_wait(&itv
->dma_waitq
, &wait
, TASK_INTERRUPTIBLE
);
308 /* if no UDMA is pending and no UDMA is in progress, then the DMA
310 while (test_bit(IVTV_F_I_UDMA_PENDING
, &itv
->i_flags
) ||
311 test_bit(IVTV_F_I_UDMA
, &itv
->i_flags
)) {
312 /* don't interrupt if the DMA is in progress but break off
313 a still pending DMA. */
314 got_sig
= signal_pending(current
);
315 if (got_sig
&& test_and_clear_bit(IVTV_F_I_UDMA_PENDING
, &itv
->i_flags
))
320 finish_wait(&itv
->dma_waitq
, &wait
);
322 /* Unmap Last DMA Xfer */
323 ivtv_udma_unmap(itv
);
324 mutex_unlock(&itv
->udma
.lock
);
326 IVTV_DEBUG_INFO("User stopped OSD\n");
333 static int ivtvfb_prep_frame(struct ivtv
*itv
, int cmd
, void __user
*source
,
334 unsigned long dest_offset
, int count
)
337 struct osd_info
*oi
= itv
->osd_info
;
341 IVTVFB_DEBUG_WARN("ivtvfb_prep_frame: Nothing to do. count = 0\n");
345 /* Check Total FB Size */
346 if ((dest_offset
+ count
) > oi
->video_buffer_size
) {
347 IVTVFB_WARN("ivtvfb_prep_frame: Overflowing the framebuffer %ld, only %d available\n",
348 dest_offset
+ count
, oi
->video_buffer_size
);
352 /* Not fatal, but will have undesirable results */
353 if ((unsigned long)source
& 3)
354 IVTVFB_WARN("ivtvfb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n",
355 (unsigned long)source
);
358 IVTVFB_WARN("ivtvfb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset
);
361 IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count
);
364 if (!access_ok(VERIFY_READ
, source
+ dest_offset
, count
)) {
365 IVTVFB_WARN("Invalid userspace pointer 0x%08lx\n",
366 (unsigned long)source
);
368 IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source 0x%08lx count %d\n",
369 dest_offset
, (unsigned long)source
,
374 /* OSD Address to send DMA to */
375 dest_offset
+= IVTV_DECODER_OFFSET
+ oi
->video_rbase
;
378 return ivtvfb_prep_dec_dma_to_device(itv
, dest_offset
, source
, count
);
381 static ssize_t
ivtvfb_write(struct fb_info
*info
, const char __user
*buf
,
382 size_t count
, loff_t
*ppos
)
384 unsigned long p
= *ppos
;
388 unsigned long total_size
;
389 struct ivtv
*itv
= (struct ivtv
*) info
->par
;
390 unsigned long dma_offset
=
391 IVTV_DECODER_OFFSET
+ itv
->osd_info
->video_rbase
;
392 unsigned long dma_size
;
393 u16 lead
= 0, tail
= 0;
395 if (info
->state
!= FBINFO_STATE_RUNNING
)
398 total_size
= info
->screen_size
;
401 total_size
= info
->fix
.smem_len
;
406 if (count
> total_size
) {
411 if (count
+ p
> total_size
) {
414 count
= total_size
- p
;
417 dst
= (void __force
*) (info
->screen_base
+ p
);
419 if (info
->fbops
->fb_sync
)
420 info
->fbops
->fb_sync(info
);
422 /* If transfer size > threshold and both src/dst
423 addresses are aligned, use DMA */
425 ((unsigned long)buf
& 3) == ((unsigned long)dst
& 3)) {
426 /* Odd address = can't DMA. Align */
427 if ((unsigned long)dst
& 3) {
428 lead
= 4 - ((unsigned long)dst
& 3);
429 if (copy_from_user(dst
, buf
, lead
))
434 /* DMA resolution is 32 bits */
435 if ((count
- lead
) & 3)
436 tail
= (count
- lead
) & 3;
438 dma_size
= count
- lead
- tail
;
439 dma_err
= ivtvfb_prep_dec_dma_to_device(itv
,
440 p
+ lead
+ dma_offset
, (void __user
*)buf
, dma_size
);
445 /* Copy any leftover data */
446 if (tail
&& copy_from_user(dst
, buf
, tail
))
448 } else if (copy_from_user(dst
, buf
, count
)) {
455 return (err
) ? err
: count
;
458 static int ivtvfb_ioctl(struct fb_info
*info
, unsigned int cmd
, unsigned long arg
)
461 struct ivtv
*itv
= (struct ivtv
*)info
->par
;
465 case FBIOGET_VBLANK
: {
466 struct fb_vblank vblank
;
469 memset(&vblank
, 0, sizeof(struct fb_vblank
));
471 vblank
.flags
= FB_VBLANK_HAVE_COUNT
|FB_VBLANK_HAVE_VCOUNT
|
472 FB_VBLANK_HAVE_VSYNC
;
473 trace
= read_reg(IVTV_REG_DEC_LINE_FIELD
) >> 16;
474 if (itv
->is_out_50hz
&& trace
> 312)
476 else if (itv
->is_out_60hz
&& trace
> 262)
479 vblank
.flags
|= FB_VBLANK_VSYNCING
;
480 vblank
.count
= itv
->last_vsync_field
;
481 vblank
.vcount
= trace
;
483 if (copy_to_user((void __user
*)arg
, &vblank
, sizeof(vblank
)))
488 case FBIO_WAITFORVSYNC
:
489 prepare_to_wait(&itv
->vsync_waitq
, &wait
, TASK_INTERRUPTIBLE
);
490 if (!schedule_timeout(msecs_to_jiffies(50)))
492 finish_wait(&itv
->vsync_waitq
, &wait
);
495 case IVTVFB_IOC_DMA_FRAME
: {
496 struct ivtvfb_dma_frame args
;
498 IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n");
499 if (copy_from_user(&args
, (void __user
*)arg
, sizeof(args
)))
502 return ivtvfb_prep_frame(itv
, cmd
, args
.source
, args
.dest_offset
, args
.count
);
506 IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd
);
512 /* Framebuffer device handling */
514 static int ivtvfb_set_var(struct ivtv
*itv
, struct fb_var_screeninfo
*var
)
516 struct osd_info
*oi
= itv
->osd_info
;
517 struct ivtv_osd_coords ivtv_osd
;
518 struct v4l2_rect ivtv_window
;
521 IVTVFB_DEBUG_INFO("ivtvfb_set_var\n");
523 /* Select color space */
524 if (var
->nonstd
) /* YUV */
525 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00);
527 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
529 /* Set the color mode */
530 switch (var
->bits_per_pixel
) {
532 osd_mode
= IVTV_OSD_BPP_8
;
535 osd_mode
= IVTV_OSD_BPP_32
;
538 switch (var
->green
.length
) {
540 osd_mode
= IVTV_OSD_BPP_16_444
;
543 osd_mode
= IVTV_OSD_BPP_16_555
;
546 osd_mode
= IVTV_OSD_BPP_16_565
;
549 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
553 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
556 /* Set video mode. Although rare, the display can become scrambled even
557 if we don't change mode. Always 'bounce' to osd_mode via mode 0 */
558 if (osd_mode
!= -1) {
559 ivtv_vapi(itv
, CX2341X_OSD_SET_PIXEL_FORMAT
, 1, 0);
560 ivtv_vapi(itv
, CX2341X_OSD_SET_PIXEL_FORMAT
, 1, osd_mode
);
563 oi
->bits_per_pixel
= var
->bits_per_pixel
;
564 oi
->bytes_per_pixel
= var
->bits_per_pixel
/ 8;
566 /* Set the flicker filter */
567 switch (var
->vmode
& FB_VMODE_MASK
) {
568 case FB_VMODE_NONINTERLACED
: /* Filter on */
569 ivtv_vapi(itv
, CX2341X_OSD_SET_FLICKER_STATE
, 1, 1);
571 case FB_VMODE_INTERLACED
: /* Filter off */
572 ivtv_vapi(itv
, CX2341X_OSD_SET_FLICKER_STATE
, 1, 0);
575 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n");
578 /* Read the current osd info */
579 ivtvfb_get_osd_coords(itv
, &ivtv_osd
);
581 /* Now set the OSD to the size we want */
582 ivtv_osd
.pixel_stride
= var
->xres_virtual
;
583 ivtv_osd
.lines
= var
->yres_virtual
;
586 ivtvfb_set_osd_coords(itv
, &ivtv_osd
);
588 /* Can't seem to find the right API combo for this.
589 Use another function which does what we need through direct register access. */
590 ivtv_window
.width
= var
->xres
;
591 ivtv_window
.height
= var
->yres
;
593 /* Minimum margin cannot be 0, as X won't allow such a mode */
594 if (!var
->upper_margin
)
596 if (!var
->left_margin
)
598 ivtv_window
.top
= var
->upper_margin
- 1;
599 ivtv_window
.left
= var
->left_margin
- 1;
601 ivtvfb_set_display_window(itv
, &ivtv_window
);
603 /* Pass screen size back to yuv handler */
604 itv
->yuv_info
.osd_full_w
= ivtv_osd
.pixel_stride
;
605 itv
->yuv_info
.osd_full_h
= ivtv_osd
.lines
;
607 /* Force update of yuv registers */
608 itv
->yuv_info
.yuv_forced_update
= 1;
610 /* Keep a copy of these settings */
611 memcpy(&oi
->fbvar_cur
, var
, sizeof(oi
->fbvar_cur
));
613 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
614 var
->xres
, var
->yres
,
615 var
->xres_virtual
, var
->yres_virtual
,
616 var
->bits_per_pixel
);
618 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
619 var
->left_margin
, var
->upper_margin
);
621 IVTVFB_DEBUG_INFO("Display filter: %s\n",
622 (var
->vmode
& FB_VMODE_MASK
) == FB_VMODE_NONINTERLACED
? "on" : "off");
623 IVTVFB_DEBUG_INFO("Color space: %s\n", var
->nonstd
? "YUV" : "RGB");
628 static int ivtvfb_get_fix(struct ivtv
*itv
, struct fb_fix_screeninfo
*fix
)
630 struct osd_info
*oi
= itv
->osd_info
;
632 IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n");
633 memset(fix
, 0, sizeof(struct fb_fix_screeninfo
));
634 strlcpy(fix
->id
, "cx23415 TV out", sizeof(fix
->id
));
635 fix
->smem_start
= oi
->video_pbase
;
636 fix
->smem_len
= oi
->video_buffer_size
;
637 fix
->type
= FB_TYPE_PACKED_PIXELS
;
638 fix
->visual
= (oi
->bits_per_pixel
== 8) ? FB_VISUAL_PSEUDOCOLOR
: FB_VISUAL_TRUECOLOR
;
642 fix
->line_length
= oi
->display_byte_stride
;
643 fix
->accel
= FB_ACCEL_NONE
;
647 /* Check the requested display mode, returning -EINVAL if we can't
650 static int _ivtvfb_check_var(struct fb_var_screeninfo
*var
, struct ivtv
*itv
)
652 struct osd_info
*oi
= itv
->osd_info
;
653 int osd_height_limit
;
654 u32 pixclock
, hlimit
, vlimit
;
656 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
658 /* Set base references for mode calcs. */
659 if (itv
->is_out_50hz
) {
663 osd_height_limit
= 576;
669 osd_height_limit
= 480;
672 if (var
->bits_per_pixel
== 8 || var
->bits_per_pixel
== 32) {
673 var
->transp
.offset
= 24;
674 var
->transp
.length
= 8;
675 var
->red
.offset
= 16;
677 var
->green
.offset
= 8;
678 var
->green
.length
= 8;
679 var
->blue
.offset
= 0;
680 var
->blue
.length
= 8;
682 else if (var
->bits_per_pixel
== 16) {
683 /* To find out the true mode, check green length */
684 switch (var
->green
.length
) {
688 var
->green
.offset
= 4;
689 var
->green
.length
= 4;
690 var
->blue
.offset
= 0;
691 var
->blue
.length
= 4;
692 var
->transp
.offset
= 12;
693 var
->transp
.length
= 1;
696 var
->red
.offset
= 10;
698 var
->green
.offset
= 5;
699 var
->green
.length
= 5;
700 var
->blue
.offset
= 0;
701 var
->blue
.length
= 5;
702 var
->transp
.offset
= 15;
703 var
->transp
.length
= 1;
706 var
->red
.offset
= 11;
708 var
->green
.offset
= 5;
709 var
->green
.length
= 6;
710 var
->blue
.offset
= 0;
711 var
->blue
.length
= 5;
712 var
->transp
.offset
= 0;
713 var
->transp
.length
= 0;
718 IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var
->bits_per_pixel
);
722 /* Check the resolution */
723 if (var
->xres
> IVTV_OSD_MAX_WIDTH
|| var
->yres
> osd_height_limit
) {
724 IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n",
725 var
->xres
, var
->yres
);
729 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */
730 if (var
->xres_virtual
> 4095 / (var
->bits_per_pixel
/ 8) ||
731 var
->xres_virtual
* var
->yres_virtual
* (var
->bits_per_pixel
/ 8) > oi
->video_buffer_size
||
732 var
->xres_virtual
< var
->xres
||
733 var
->yres_virtual
< var
->yres
) {
734 IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n",
735 var
->xres_virtual
, var
->yres_virtual
);
739 /* Some extra checks if in 8 bit mode */
740 if (var
->bits_per_pixel
== 8) {
741 /* Width must be a multiple of 4 */
743 IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var
->xres
);
746 if (var
->xres_virtual
& 3) {
747 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var
->xres_virtual
);
751 else if (var
->bits_per_pixel
== 16) {
752 /* Width must be a multiple of 2 */
754 IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var
->xres
);
757 if (var
->xres_virtual
& 1) {
758 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var
->xres_virtual
);
763 /* Now check the offsets */
764 if (var
->xoffset
>= var
->xres_virtual
|| var
->yoffset
>= var
->yres_virtual
) {
765 IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n",
766 var
->xoffset
, var
->xres_virtual
, var
->yoffset
, var
->yres_virtual
);
770 /* Check pixel format */
771 if (var
->nonstd
> 1) {
772 IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var
->nonstd
);
776 /* Check video mode */
777 if (((var
->vmode
& FB_VMODE_MASK
) != FB_VMODE_NONINTERLACED
) &&
778 ((var
->vmode
& FB_VMODE_MASK
) != FB_VMODE_INTERLACED
)) {
779 IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var
->vmode
& FB_VMODE_MASK
);
783 /* Check the left & upper margins
784 If the margins are too large, just center the screen
785 (enforcing margins causes too many problems) */
787 if (var
->left_margin
+ var
->xres
> IVTV_OSD_MAX_WIDTH
+ 1)
788 var
->left_margin
= 1 + ((IVTV_OSD_MAX_WIDTH
- var
->xres
) / 2);
790 if (var
->upper_margin
+ var
->yres
> (itv
->is_out_50hz
? 577 : 481))
791 var
->upper_margin
= 1 + (((itv
->is_out_50hz
? 576 : 480) -
794 /* Maintain overall 'size' for a constant refresh rate */
795 var
->right_margin
= hlimit
- var
->left_margin
- var
->xres
;
796 var
->lower_margin
= vlimit
- var
->upper_margin
- var
->yres
;
798 /* Fixed sync times */
802 /* Non-interlaced / interlaced mode is used to switch the OSD filter
803 on or off. Adjust the clock timings to maintain a constant
804 vertical refresh rate. */
805 if ((var
->vmode
& FB_VMODE_MASK
) == FB_VMODE_NONINTERLACED
)
806 var
->pixclock
= pixclock
/ 2;
808 var
->pixclock
= pixclock
;
810 itv
->osd_rect
.width
= var
->xres
;
811 itv
->osd_rect
.height
= var
->yres
;
813 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n",
814 var
->xres
, var
->yres
,
815 var
->xres_virtual
, var
->yres_virtual
,
816 var
->bits_per_pixel
);
818 IVTVFB_DEBUG_INFO("Display position: %d, %d\n",
819 var
->left_margin
, var
->upper_margin
);
821 IVTVFB_DEBUG_INFO("Display filter: %s\n",
822 (var
->vmode
& FB_VMODE_MASK
) == FB_VMODE_NONINTERLACED
? "on" : "off");
823 IVTVFB_DEBUG_INFO("Color space: %s\n", var
->nonstd
? "YUV" : "RGB");
827 static int ivtvfb_check_var(struct fb_var_screeninfo
*var
, struct fb_info
*info
)
829 struct ivtv
*itv
= (struct ivtv
*) info
->par
;
830 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n");
831 return _ivtvfb_check_var(var
, itv
);
834 static int ivtvfb_pan_display(struct fb_var_screeninfo
*var
, struct fb_info
*info
)
837 struct ivtv
*itv
= (struct ivtv
*) info
->par
;
839 if (var
->yoffset
+ info
->var
.yres
> info
->var
.yres_virtual
||
840 var
->xoffset
+ info
->var
.xres
> info
->var
.xres_virtual
)
843 osd_pan_index
= var
->yoffset
* info
->fix
.line_length
844 + var
->xoffset
* info
->var
.bits_per_pixel
/ 8;
845 write_reg(osd_pan_index
, 0x02A0C);
847 /* Pass this info back the yuv handler */
848 itv
->yuv_info
.osd_x_pan
= var
->xoffset
;
849 itv
->yuv_info
.osd_y_pan
= var
->yoffset
;
850 /* Force update of yuv registers */
851 itv
->yuv_info
.yuv_forced_update
= 1;
852 /* Remember this value */
853 itv
->osd_info
->pan_cur
= osd_pan_index
;
857 static int ivtvfb_set_par(struct fb_info
*info
)
860 struct ivtv
*itv
= (struct ivtv
*) info
->par
;
862 IVTVFB_DEBUG_INFO("ivtvfb_set_par\n");
864 rc
= ivtvfb_set_var(itv
, &info
->var
);
865 ivtvfb_pan_display(&info
->var
, info
);
866 ivtvfb_get_fix(itv
, &info
->fix
);
867 ivtv_firmware_check(itv
, "ivtvfb_set_par");
871 static int ivtvfb_setcolreg(unsigned regno
, unsigned red
, unsigned green
,
872 unsigned blue
, unsigned transp
,
873 struct fb_info
*info
)
876 struct ivtv
*itv
= (struct ivtv
*)info
->par
;
878 if (regno
>= info
->cmap
.len
)
881 color
= ((transp
& 0xFF00) << 16) |((red
& 0xFF00) << 8) | (green
& 0xFF00) | ((blue
& 0xFF00) >> 8);
882 if (info
->var
.bits_per_pixel
<= 8) {
883 write_reg(regno
, 0x02a30);
884 write_reg(color
, 0x02a34);
885 itv
->osd_info
->palette_cur
[regno
] = color
;
891 palette
= info
->pseudo_palette
;
892 if (info
->var
.bits_per_pixel
== 16) {
893 switch (info
->var
.green
.length
) {
895 color
= ((red
& 0xf000) >> 4) |
896 ((green
& 0xf000) >> 8) |
897 ((blue
& 0xf000) >> 12);
900 color
= ((red
& 0xf800) >> 1) |
901 ((green
& 0xf800) >> 6) |
902 ((blue
& 0xf800) >> 11);
905 color
= (red
& 0xf800 ) |
906 ((green
& 0xfc00) >> 5) |
907 ((blue
& 0xf800) >> 11);
911 palette
[regno
] = color
;
915 /* We don't really support blanking. All this does is enable or
917 static int ivtvfb_blank(int blank_mode
, struct fb_info
*info
)
919 struct ivtv
*itv
= (struct ivtv
*)info
->par
;
921 IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode
);
922 switch (blank_mode
) {
923 case FB_BLANK_UNBLANK
:
924 ivtv_vapi(itv
, CX2341X_OSD_SET_STATE
, 1, 1);
925 ivtv_call_hw(itv
, IVTV_HW_SAA7127
, video
, s_stream
, 1);
927 case FB_BLANK_NORMAL
:
928 case FB_BLANK_HSYNC_SUSPEND
:
929 case FB_BLANK_VSYNC_SUSPEND
:
930 ivtv_vapi(itv
, CX2341X_OSD_SET_STATE
, 1, 0);
931 ivtv_call_hw(itv
, IVTV_HW_SAA7127
, video
, s_stream
, 1);
933 case FB_BLANK_POWERDOWN
:
934 ivtv_call_hw(itv
, IVTV_HW_SAA7127
, video
, s_stream
, 0);
935 ivtv_vapi(itv
, CX2341X_OSD_SET_STATE
, 1, 0);
938 itv
->osd_info
->blank_cur
= blank_mode
;
942 static struct fb_ops ivtvfb_ops
= {
943 .owner
= THIS_MODULE
,
944 .fb_write
= ivtvfb_write
,
945 .fb_check_var
= ivtvfb_check_var
,
946 .fb_set_par
= ivtvfb_set_par
,
947 .fb_setcolreg
= ivtvfb_setcolreg
,
948 .fb_fillrect
= cfb_fillrect
,
949 .fb_copyarea
= cfb_copyarea
,
950 .fb_imageblit
= cfb_imageblit
,
952 .fb_ioctl
= ivtvfb_ioctl
,
953 .fb_pan_display
= ivtvfb_pan_display
,
954 .fb_blank
= ivtvfb_blank
,
957 /* Restore hardware after firmware restart */
958 static void ivtvfb_restore(struct ivtv
*itv
)
960 struct osd_info
*oi
= itv
->osd_info
;
963 ivtvfb_set_var(itv
, &oi
->fbvar_cur
);
964 ivtvfb_blank(oi
->blank_cur
, &oi
->ivtvfb_info
);
965 for (i
= 0; i
< 256; i
++) {
966 write_reg(i
, 0x02a30);
967 write_reg(oi
->palette_cur
[i
], 0x02a34);
969 write_reg(oi
->pan_cur
, 0x02a0c);
975 /* Setup our initial video mode */
976 static int ivtvfb_init_vidmode(struct ivtv
*itv
)
978 struct osd_info
*oi
= itv
->osd_info
;
979 struct v4l2_rect start_window
;
984 if (osd_depth
!= 8 && osd_depth
!= 16 && osd_depth
!= 32)
986 oi
->bits_per_pixel
= osd_depth
;
987 oi
->bytes_per_pixel
= oi
->bits_per_pixel
/ 8;
989 /* Horizontal size & position */
994 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */
997 else if (osd_depth
== 16)
1000 start_window
.width
= osd_xres
? osd_xres
: 640;
1002 /* Check horizontal start (osd_left). */
1003 if (osd_left
&& osd_left
+ start_window
.width
> 721) {
1004 IVTVFB_ERR("Invalid osd_left - assuming default\n");
1008 /* Hardware coords start at 0, user coords start at 1. */
1011 start_window
.left
= osd_left
>= 0 ?
1012 osd_left
: ((IVTV_OSD_MAX_WIDTH
- start_window
.width
) / 2);
1014 oi
->display_byte_stride
=
1015 start_window
.width
* oi
->bytes_per_pixel
;
1017 /* Vertical size & position */
1019 max_height
= itv
->is_out_50hz
? 576 : 480;
1021 if (osd_yres
> max_height
)
1022 osd_yres
= max_height
;
1024 start_window
.height
= osd_yres
?
1025 osd_yres
: itv
->is_out_50hz
? 480 : 400;
1027 /* Check vertical start (osd_upper). */
1028 if (osd_upper
+ start_window
.height
> max_height
+ 1) {
1029 IVTVFB_ERR("Invalid osd_upper - assuming default\n");
1033 /* Hardware coords start at 0, user coords start at 1. */
1036 start_window
.top
= osd_upper
>= 0 ? osd_upper
: ((max_height
- start_window
.height
) / 2);
1038 oi
->display_width
= start_window
.width
;
1039 oi
->display_height
= start_window
.height
;
1041 /* Generate a valid fb_var_screeninfo */
1043 oi
->ivtvfb_defined
.xres
= oi
->display_width
;
1044 oi
->ivtvfb_defined
.yres
= oi
->display_height
;
1045 oi
->ivtvfb_defined
.xres_virtual
= oi
->display_width
;
1046 oi
->ivtvfb_defined
.yres_virtual
= oi
->display_height
;
1047 oi
->ivtvfb_defined
.bits_per_pixel
= oi
->bits_per_pixel
;
1048 oi
->ivtvfb_defined
.vmode
= (osd_laced
? FB_VMODE_INTERLACED
: FB_VMODE_NONINTERLACED
);
1049 oi
->ivtvfb_defined
.left_margin
= start_window
.left
+ 1;
1050 oi
->ivtvfb_defined
.upper_margin
= start_window
.top
+ 1;
1051 oi
->ivtvfb_defined
.accel_flags
= FB_ACCEL_NONE
;
1052 oi
->ivtvfb_defined
.nonstd
= 0;
1054 /* We've filled in the most data, let the usual mode check
1055 routine fill in the rest. */
1056 _ivtvfb_check_var(&oi
->ivtvfb_defined
, itv
);
1058 /* Generate valid fb_fix_screeninfo */
1060 ivtvfb_get_fix(itv
, &oi
->ivtvfb_fix
);
1062 /* Generate valid fb_info */
1064 oi
->ivtvfb_info
.node
= -1;
1065 oi
->ivtvfb_info
.flags
= FBINFO_FLAG_DEFAULT
;
1066 oi
->ivtvfb_info
.fbops
= &ivtvfb_ops
;
1067 oi
->ivtvfb_info
.par
= itv
;
1068 oi
->ivtvfb_info
.var
= oi
->ivtvfb_defined
;
1069 oi
->ivtvfb_info
.fix
= oi
->ivtvfb_fix
;
1070 oi
->ivtvfb_info
.screen_base
= (u8 __iomem
*)oi
->video_vbase
;
1071 oi
->ivtvfb_info
.fbops
= &ivtvfb_ops
;
1073 /* Supply some monitor specs. Bogus values will do for now */
1074 oi
->ivtvfb_info
.monspecs
.hfmin
= 8000;
1075 oi
->ivtvfb_info
.monspecs
.hfmax
= 70000;
1076 oi
->ivtvfb_info
.monspecs
.vfmin
= 10;
1077 oi
->ivtvfb_info
.monspecs
.vfmax
= 100;
1079 /* Allocate color map */
1080 if (fb_alloc_cmap(&oi
->ivtvfb_info
.cmap
, 256, 1)) {
1081 IVTVFB_ERR("abort, unable to alloc cmap\n");
1085 /* Allocate the pseudo palette */
1086 oi
->ivtvfb_info
.pseudo_palette
=
1087 kmalloc(sizeof(u32
) * 16, GFP_KERNEL
|__GFP_NOWARN
);
1089 if (!oi
->ivtvfb_info
.pseudo_palette
) {
1090 IVTVFB_ERR("abort, unable to alloc pseudo palette\n");
1097 /* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */
1099 static int ivtvfb_init_io(struct ivtv
*itv
)
1101 struct osd_info
*oi
= itv
->osd_info
;
1103 mutex_lock(&itv
->serialize_lock
);
1104 if (ivtv_init_on_first_open(itv
)) {
1105 mutex_unlock(&itv
->serialize_lock
);
1106 IVTVFB_ERR("Failed to initialize ivtv\n");
1109 mutex_unlock(&itv
->serialize_lock
);
1111 if (ivtvfb_get_framebuffer(itv
, &oi
->video_rbase
,
1112 &oi
->video_buffer_size
) < 0) {
1113 IVTVFB_ERR("Firmware failed to respond\n");
1117 /* The osd buffer size depends on the number of video buffers allocated
1118 on the PVR350 itself. For now we'll hardcode the smallest osd buffer
1119 size to prevent any overlap. */
1120 oi
->video_buffer_size
= 1704960;
1122 oi
->video_pbase
= itv
->base_addr
+ IVTV_DECODER_OFFSET
+ oi
->video_rbase
;
1123 oi
->video_vbase
= itv
->dec_mem
+ oi
->video_rbase
;
1125 if (!oi
->video_vbase
) {
1126 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n",
1127 oi
->video_buffer_size
, oi
->video_pbase
);
1131 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
1132 oi
->video_pbase
, oi
->video_vbase
,
1133 oi
->video_buffer_size
/ 1024);
1137 /* Find the largest power of two that maps the whole buffer */
1138 int size_shift
= 31;
1140 while (!(oi
->video_buffer_size
& (1 << size_shift
))) {
1144 oi
->fb_start_aligned_physaddr
= oi
->video_pbase
& ~((1 << size_shift
) - 1);
1145 oi
->fb_end_aligned_physaddr
= oi
->video_pbase
+ oi
->video_buffer_size
;
1146 oi
->fb_end_aligned_physaddr
+= (1 << size_shift
) - 1;
1147 oi
->fb_end_aligned_physaddr
&= ~((1 << size_shift
) - 1);
1148 if (mtrr_add(oi
->fb_start_aligned_physaddr
,
1149 oi
->fb_end_aligned_physaddr
- oi
->fb_start_aligned_physaddr
,
1150 MTRR_TYPE_WRCOMB
, 1) < 0) {
1151 IVTVFB_INFO("disabled mttr\n");
1152 oi
->fb_start_aligned_physaddr
= 0;
1153 oi
->fb_end_aligned_physaddr
= 0;
1158 /* Blank the entire osd. */
1159 memset_io(oi
->video_vbase
, 0, oi
->video_buffer_size
);
1164 /* Release any memory we've grabbed & remove mtrr entry */
1165 static void ivtvfb_release_buffers (struct ivtv
*itv
)
1167 struct osd_info
*oi
= itv
->osd_info
;
1170 if (oi
->ivtvfb_info
.cmap
.len
)
1171 fb_dealloc_cmap(&oi
->ivtvfb_info
.cmap
);
1173 /* Release pseudo palette */
1174 if (oi
->ivtvfb_info
.pseudo_palette
)
1175 kfree(oi
->ivtvfb_info
.pseudo_palette
);
1178 if (oi
->fb_end_aligned_physaddr
) {
1179 mtrr_del(-1, oi
->fb_start_aligned_physaddr
,
1180 oi
->fb_end_aligned_physaddr
- oi
->fb_start_aligned_physaddr
);
1185 itv
->osd_info
= NULL
;
1188 /* Initialize the specified card */
1190 static int ivtvfb_init_card(struct ivtv
*itv
)
1194 if (itv
->osd_info
) {
1195 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id
);
1199 itv
->osd_info
= kzalloc(sizeof(struct osd_info
),
1200 GFP_ATOMIC
|__GFP_NOWARN
);
1201 if (itv
->osd_info
== NULL
) {
1202 IVTVFB_ERR("Failed to allocate memory for osd_info\n");
1206 /* Find & setup the OSD buffer */
1207 rc
= ivtvfb_init_io(itv
);
1209 ivtvfb_release_buffers(itv
);
1213 /* Set the startup video mode information */
1214 if ((rc
= ivtvfb_init_vidmode(itv
))) {
1215 ivtvfb_release_buffers(itv
);
1219 /* Register the framebuffer */
1220 if (register_framebuffer(&itv
->osd_info
->ivtvfb_info
) < 0) {
1221 ivtvfb_release_buffers(itv
);
1225 itv
->osd_video_pbase
= itv
->osd_info
->video_pbase
;
1227 /* Set the card to the requested mode */
1228 ivtvfb_set_par(&itv
->osd_info
->ivtvfb_info
);
1230 /* Set color 0 to black */
1231 write_reg(0, 0x02a30);
1232 write_reg(0, 0x02a34);
1234 /* Enable the osd */
1235 ivtvfb_blank(FB_BLANK_UNBLANK
, &itv
->osd_info
->ivtvfb_info
);
1237 /* Enable restart */
1238 itv
->ivtvfb_restore
= ivtvfb_restore
;
1241 ivtv_udma_alloc(itv
);
1246 static int __init
ivtvfb_callback_init(struct device
*dev
, void *p
)
1248 struct v4l2_device
*v4l2_dev
= dev_get_drvdata(dev
);
1249 struct ivtv
*itv
= container_of(v4l2_dev
, struct ivtv
, v4l2_dev
);
1251 if (itv
->v4l2_cap
& V4L2_CAP_VIDEO_OUTPUT
) {
1252 if (ivtvfb_init_card(itv
) == 0) {
1253 IVTVFB_INFO("Framebuffer registered on %s\n",
1254 itv
->v4l2_dev
.name
);
1261 static int ivtvfb_callback_cleanup(struct device
*dev
, void *p
)
1263 struct v4l2_device
*v4l2_dev
= dev_get_drvdata(dev
);
1264 struct ivtv
*itv
= container_of(v4l2_dev
, struct ivtv
, v4l2_dev
);
1265 struct osd_info
*oi
= itv
->osd_info
;
1267 if (itv
->v4l2_cap
& V4L2_CAP_VIDEO_OUTPUT
) {
1268 if (unregister_framebuffer(&itv
->osd_info
->ivtvfb_info
)) {
1269 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n",
1273 IVTVFB_INFO("Unregister framebuffer %d\n", itv
->instance
);
1274 itv
->ivtvfb_restore
= NULL
;
1275 ivtvfb_blank(FB_BLANK_VSYNC_SUSPEND
, &oi
->ivtvfb_info
);
1276 ivtvfb_release_buffers(itv
);
1277 itv
->osd_video_pbase
= 0;
1282 static int __init
ivtvfb_init(void)
1284 struct device_driver
*drv
;
1288 if (ivtvfb_card_id
< -1 || ivtvfb_card_id
>= IVTV_MAX_CARDS
) {
1289 printk(KERN_ERR
"ivtvfb: ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n",
1290 IVTV_MAX_CARDS
- 1);
1294 drv
= driver_find("ivtv", &pci_bus_type
);
1295 err
= driver_for_each_device(drv
, NULL
, ®istered
, ivtvfb_callback_init
);
1298 printk(KERN_ERR
"ivtvfb: no cards found\n");
1304 static void ivtvfb_cleanup(void)
1306 struct device_driver
*drv
;
1309 printk(KERN_INFO
"ivtvfb: Unloading framebuffer module\n");
1311 drv
= driver_find("ivtv", &pci_bus_type
);
1312 err
= driver_for_each_device(drv
, NULL
, NULL
, ivtvfb_callback_cleanup
);
1316 module_init(ivtvfb_init
);
1317 module_exit(ivtvfb_cleanup
);