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linux/drivers/media/video/zoran_device.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

1784 lines
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/*
* Zoran zr36057/zr36067 PCI controller driver, for the
* Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
* Media Labs LML33/LML33R10.
*
* This part handles device access (PCI/I2C/codec/...)
*
* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
*
* Currently maintained by:
* Ronald Bultje <rbultje@ronald.bitfreak.net>
* Laurent Pinchart <laurent.pinchart@skynet.be>
* Mailinglist <mjpeg-users@lists.sf.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/byteorder/generic.h>
#include <linux/interrupt.h>
#include <linux/proc_fs.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/videodev.h>
#include <linux/spinlock.h>
#include <linux/sem.h>
#include <linux/pci.h>
#include <linux/video_decoder.h>
#include <linux/video_encoder.h>
#include <linux/delay.h>
#include <linux/wait.h>
#include <asm/io.h>
#include "videocodec.h"
#include "zoran.h"
#include "zoran_device.h"
#define IRQ_MASK ( ZR36057_ISR_GIRQ0 | \
ZR36057_ISR_GIRQ1 | \
ZR36057_ISR_JPEGRepIRQ )
extern const struct zoran_format zoran_formats[];
extern int *zr_debug;
#define dprintk(num, format, args...) \
do { \
if (*zr_debug >= num) \
printk(format, ##args); \
} while (0)
static int lml33dpath = 0; /* 1 will use digital path in capture
* mode instead of analog. It can be
* used for picture adjustments using
* tool like xawtv while watching image
* on TV monitor connected to the output.
* However, due to absence of 75 Ohm
* load on Bt819 input, there will be
* some image imperfections */
module_param(lml33dpath, bool, 0);
MODULE_PARM_DESC(lml33dpath,
"Use digital path capture mode (on LML33 cards)");
static void
zr36057_init_vfe (struct zoran *zr);
/*
* General Purpose I/O and Guest bus access
*/
/*
* This is a bit tricky. When a board lacks a GPIO function, the corresponding
* GPIO bit number in the card_info structure is set to 0.
*/
void
GPIO (struct zoran *zr,
int bit,
unsigned int value)
{
u32 reg;
u32 mask;
/* Make sure the bit number is legal
* A bit number of -1 (lacking) gives a mask of 0,
* making it harmless */
mask = (1 << (24 + bit)) & 0xff000000;
reg = btread(ZR36057_GPPGCR1) & ~mask;
if (value) {
reg |= mask;
}
btwrite(reg, ZR36057_GPPGCR1);
udelay(1);
}
/*
* Wait til post office is no longer busy
*/
int
post_office_wait (struct zoran *zr)
{
u32 por;
// while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
/* wait for something to happen */
}
if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
/* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
por);
return -1;
}
return 0;
}
int
post_office_write (struct zoran *zr,
unsigned int guest,
unsigned int reg,
unsigned int value)
{
u32 por;
por =
ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
((reg & 7) << 16) | (value & 0xFF);
btwrite(por, ZR36057_POR);
return post_office_wait(zr);
}
int
post_office_read (struct zoran *zr,
unsigned int guest,
unsigned int reg)
{
u32 por;
por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
btwrite(por, ZR36057_POR);
if (post_office_wait(zr) < 0) {
return -1;
}
return btread(ZR36057_POR) & 0xFF;
}
/*
* detect guests
*/
static void
dump_guests (struct zoran *zr)
{
if (*zr_debug > 2) {
int i, guest[8];
for (i = 1; i < 8; i++) { // Don't read jpeg codec here
guest[i] = post_office_read(zr, i, 0);
}
printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
for (i = 1; i < 8; i++) {
printk(" 0x%02x", guest[i]);
}
printk("\n");
}
}
static inline unsigned long
get_time (void)
{
struct timeval tv;
do_gettimeofday(&tv);
return (1000000 * tv.tv_sec + tv.tv_usec);
}
void
detect_guest_activity (struct zoran *zr)
{
int timeout, i, j, res, guest[8], guest0[8], change[8][3];
unsigned long t0, t1;
dump_guests(zr);
printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
ZR_DEVNAME(zr));
for (i = 1; i < 8; i++) { // Don't read jpeg codec here
guest0[i] = guest[i] = post_office_read(zr, i, 0);
}
timeout = 0;
j = 0;
t0 = get_time();
while (timeout < 10000) {
udelay(10);
timeout++;
for (i = 1; (i < 8) && (j < 8); i++) {
res = post_office_read(zr, i, 0);
if (res != guest[i]) {
t1 = get_time();
change[j][0] = (t1 - t0);
t0 = t1;
change[j][1] = i;
change[j][2] = res;
j++;
guest[i] = res;
}
}
if (j >= 8)
break;
}
printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
for (i = 1; i < 8; i++) {
printk(" 0x%02x", guest0[i]);
}
printk("\n");
if (j == 0) {
printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
return;
}
for (i = 0; i < j; i++) {
printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
change[i][0], change[i][1], change[i][2]);
}
}
/*
* JPEG Codec access
*/
void
jpeg_codec_sleep (struct zoran *zr,
int sleep)
{
GPIO(zr, zr->card.gpio[GPIO_JPEG_SLEEP], !sleep);
if (!sleep) {
dprintk(3,
KERN_DEBUG
"%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
udelay(500);
} else {
dprintk(3,
KERN_DEBUG
"%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
udelay(2);
}
}
int
jpeg_codec_reset (struct zoran *zr)
{
/* Take the codec out of sleep */
jpeg_codec_sleep(zr, 0);
if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
0);
udelay(2);
} else {
GPIO(zr, zr->card.gpio[GPIO_JPEG_RESET], 0);
udelay(2);
GPIO(zr, zr->card.gpio[GPIO_JPEG_RESET], 1);
udelay(2);
}
return 0;
}
/*
* Set the registers for the size we have specified. Don't bother
* trying to understand this without the ZR36057 manual in front of
* you [AC].
*
* PS: The manual is free for download in .pdf format from
* www.zoran.com - nicely done those folks.
*/
static void
zr36057_adjust_vfe (struct zoran *zr,
enum zoran_codec_mode mode)
{
u32 reg;
switch (mode) {
case BUZ_MODE_MOTION_DECOMPRESS:
btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
reg = btread(ZR36057_VFEHCR);
if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
reg += ((1 << 10) | 1);
}
btwrite(reg, ZR36057_VFEHCR);
break;
case BUZ_MODE_MOTION_COMPRESS:
case BUZ_MODE_IDLE:
default:
if (zr->norm == VIDEO_MODE_NTSC ||
(zr->card.type == LML33R10 &&
zr->norm == VIDEO_MODE_PAL))
btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
else
btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
reg = btread(ZR36057_VFEHCR);
if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
reg -= ((1 << 10) | 1);
}
btwrite(reg, ZR36057_VFEHCR);
break;
}
}
/*
* set geometry
*/
static void
zr36057_set_vfe (struct zoran *zr,
int video_width,
int video_height,
const struct zoran_format *format)
{
struct tvnorm *tvn;
unsigned HStart, HEnd, VStart, VEnd;
unsigned DispMode;
unsigned VidWinWid, VidWinHt;
unsigned hcrop1, hcrop2, vcrop1, vcrop2;
unsigned Wa, We, Ha, He;
unsigned X, Y, HorDcm, VerDcm;
u32 reg;
unsigned mask_line_size;
tvn = zr->timing;
Wa = tvn->Wa;
Ha = tvn->Ha;
dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
ZR_DEVNAME(zr), video_width, video_height);
if (zr->norm != VIDEO_MODE_PAL &&
zr->norm != VIDEO_MODE_NTSC &&
zr->norm != VIDEO_MODE_SECAM) {
dprintk(1,
KERN_ERR "%s: set_vfe() - norm = %d not valid\n",
ZR_DEVNAME(zr), zr->norm);
return;
}
if (video_width < BUZ_MIN_WIDTH ||
video_height < BUZ_MIN_HEIGHT ||
video_width > Wa || video_height > Ha) {
dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
ZR_DEVNAME(zr), video_width, video_height);
return;
}
/**** zr36057 ****/
/* horizontal */
VidWinWid = video_width;
X = (VidWinWid * 64 + tvn->Wa - 1) / tvn->Wa;
We = (VidWinWid * 64) / X;
HorDcm = 64 - X;
hcrop1 = 2 * ((tvn->Wa - We) / 4);
hcrop2 = tvn->Wa - We - hcrop1;
HStart = tvn->HStart ? tvn->HStart : 1;
/* (Ronald) Original comment:
* "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
* this is false. It inverses chroma values on the LML33R10 (so Cr
* suddenly is shown as Cb and reverse, really cool effect if you
* want to see blue faces, not useful otherwise). So don't use |1.
* However, the DC10 has '0' as HStart, but does need |1, so we
* use a dirty check...
*/
HEnd = HStart + tvn->Wa - 1;
HStart += hcrop1;
HEnd -= hcrop2;
reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
| ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
if (zr->card.vfe_pol.hsync_pol)
reg |= ZR36057_VFEHCR_HSPol;
btwrite(reg, ZR36057_VFEHCR);
/* Vertical */
DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
VidWinHt = DispMode ? video_height : video_height / 2;
Y = (VidWinHt * 64 * 2 + tvn->Ha - 1) / tvn->Ha;
He = (VidWinHt * 64) / Y;
VerDcm = 64 - Y;
vcrop1 = (tvn->Ha / 2 - He) / 2;
vcrop2 = tvn->Ha / 2 - He - vcrop1;
VStart = tvn->VStart;
VEnd = VStart + tvn->Ha / 2; // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
VStart += vcrop1;
VEnd -= vcrop2;
reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
| ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
if (zr->card.vfe_pol.vsync_pol)
reg |= ZR36057_VFEVCR_VSPol;
btwrite(reg, ZR36057_VFEVCR);
/* scaler and pixel format */
reg = 0;
reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
reg |= (DispMode << ZR36057_VFESPFR_DispMode);
if (format->palette != VIDEO_PALETTE_YUV422)
reg |= ZR36057_VFESPFR_LittleEndian;
/* RJ: I don't know, why the following has to be the opposite
* of the corresponding ZR36060 setting, but only this way
* we get the correct colors when uncompressing to the screen */
//reg |= ZR36057_VFESPFR_VCLKPol; /**/
/* RJ: Don't know if that is needed for NTSC also */
if (zr->norm != VIDEO_MODE_NTSC)
reg |= ZR36057_VFESPFR_ExtFl; // NEEDED!!!!!!! Wolfgang
reg |= ZR36057_VFESPFR_TopField;
switch (format->palette) {
case VIDEO_PALETTE_YUV422:
reg |= ZR36057_VFESPFR_YUV422;
break;
case VIDEO_PALETTE_RGB555:
reg |= ZR36057_VFESPFR_RGB555 | ZR36057_VFESPFR_ErrDif;
break;
case VIDEO_PALETTE_RGB565:
reg |= ZR36057_VFESPFR_RGB565 | ZR36057_VFESPFR_ErrDif;
break;
case VIDEO_PALETTE_RGB24:
reg |= ZR36057_VFESPFR_RGB888 | ZR36057_VFESPFR_Pack24;
break;
case VIDEO_PALETTE_RGB32:
reg |= ZR36057_VFESPFR_RGB888;
break;
default:
dprintk(1,
KERN_INFO "%s: set_vfe() - unknown color_fmt=%x\n",
ZR_DEVNAME(zr), format->palette);
return;
}
if (HorDcm >= 48) {
reg |= 3 << ZR36057_VFESPFR_HFilter; /* 5 tap filter */
} else if (HorDcm >= 32) {
reg |= 2 << ZR36057_VFESPFR_HFilter; /* 4 tap filter */
} else if (HorDcm >= 16) {
reg |= 1 << ZR36057_VFESPFR_HFilter; /* 3 tap filter */
}
btwrite(reg, ZR36057_VFESPFR);
/* display configuration */
reg = (16 << ZR36057_VDCR_MinPix)
| (VidWinHt << ZR36057_VDCR_VidWinHt)
| (VidWinWid << ZR36057_VDCR_VidWinWid);
if (pci_pci_problems & PCIPCI_TRITON)
// || zr->revision < 1) // Revision 1 has also Triton support
reg &= ~ZR36057_VDCR_Triton;
else
reg |= ZR36057_VDCR_Triton;
btwrite(reg, ZR36057_VDCR);
/* (Ronald) don't write this if overlay_mask = NULL */
if (zr->overlay_mask) {
/* Write overlay clipping mask data, but don't enable overlay clipping */
/* RJ: since this makes only sense on the screen, we use
* zr->overlay_settings.width instead of video_width */
mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
reg = virt_to_bus(zr->overlay_mask);
btwrite(reg, ZR36057_MMTR);
reg = virt_to_bus(zr->overlay_mask + mask_line_size);
btwrite(reg, ZR36057_MMBR);
reg =
mask_line_size - (zr->overlay_settings.width +
31) / 32;
if (DispMode == 0)
reg += mask_line_size;
reg <<= ZR36057_OCR_MaskStride;
btwrite(reg, ZR36057_OCR);
}
zr36057_adjust_vfe(zr, zr->codec_mode);
}
/*
* Switch overlay on or off
*/
void
zr36057_overlay (struct zoran *zr,
int on)
{
u32 reg;
if (on) {
/* do the necessary settings ... */
btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR); /* switch it off first */
zr36057_set_vfe(zr,
zr->overlay_settings.width,
zr->overlay_settings.height,
zr->overlay_settings.format);
/* Start and length of each line MUST be 4-byte aligned.
* This should be allready checked before the call to this routine.
* All error messages are internal driver checking only! */
/* video display top and bottom registers */
reg = (long) zr->buffer.base +
zr->overlay_settings.x *
((zr->overlay_settings.format->depth + 7) / 8) +
zr->overlay_settings.y *
zr->buffer.bytesperline;
btwrite(reg, ZR36057_VDTR);
if (reg & 3)
dprintk(1,
KERN_ERR
"%s: zr36057_overlay() - video_address not aligned\n",
ZR_DEVNAME(zr));
if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
reg += zr->buffer.bytesperline;
btwrite(reg, ZR36057_VDBR);
/* video stride, status, and frame grab register */
reg = zr->buffer.bytesperline -
zr->overlay_settings.width *
((zr->overlay_settings.format->depth + 7) / 8);
if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
reg += zr->buffer.bytesperline;
if (reg & 3)
dprintk(1,
KERN_ERR
"%s: zr36057_overlay() - video_stride not aligned\n",
ZR_DEVNAME(zr));
reg = (reg << ZR36057_VSSFGR_DispStride);
reg |= ZR36057_VSSFGR_VidOvf; /* clear overflow status */
btwrite(reg, ZR36057_VSSFGR);
/* Set overlay clipping */
if (zr->overlay_settings.clipcount > 0)
btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
/* ... and switch it on */
btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
} else {
/* Switch it off */
btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
}
}
/*
* The overlay mask has one bit for each pixel on a scan line,
* and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
*/
void
write_overlay_mask (struct file *file,
struct video_clip *vp,
int count)
{
struct zoran_fh *fh = file->private_data;
struct zoran *zr = fh->zr;
unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
u32 *mask;
int x, y, width, height;
unsigned i, j, k;
u32 reg;
/* fill mask with one bits */
memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
reg = 0;
for (i = 0; i < count; ++i) {
/* pick up local copy of clip */
x = vp[i].x;
y = vp[i].y;
width = vp[i].width;
height = vp[i].height;
/* trim clips that extend beyond the window */
if (x < 0) {
width += x;
x = 0;
}
if (y < 0) {
height += y;
y = 0;
}
if (x + width > fh->overlay_settings.width) {
width = fh->overlay_settings.width - x;
}
if (y + height > fh->overlay_settings.height) {
height = fh->overlay_settings.height - y;
}
/* ignore degenerate clips */
if (height <= 0) {
continue;
}
if (width <= 0) {
continue;
}
/* apply clip for each scan line */
for (j = 0; j < height; ++j) {
/* reset bit for each pixel */
/* this can be optimized later if need be */
mask = fh->overlay_mask + (y + j) * mask_line_size;
for (k = 0; k < width; ++k) {
mask[(x + k) / 32] &=
~((u32) 1 << (x + k) % 32);
}
}
}
}
/* Enable/Disable uncompressed memory grabbing of the 36057 */
void
zr36057_set_memgrab (struct zoran *zr,
int mode)
{
if (mode) {
if (btread(ZR36057_VSSFGR) &
(ZR36057_VSSFGR_SnapShot | ZR36057_VSSFGR_FrameGrab))
dprintk(1,
KERN_WARNING
"%s: zr36057_set_memgrab(1) with SnapShot or FrameGrab on!?\n",
ZR_DEVNAME(zr));
/* switch on VSync interrupts */
btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
btor(zr->card.vsync_int, ZR36057_ICR); // SW
/* enable SnapShot */
btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
/* Set zr36057 video front end and enable video */
zr36057_set_vfe(zr, zr->v4l_settings.width,
zr->v4l_settings.height,
zr->v4l_settings.format);
zr->v4l_memgrab_active = 1;
} else {
zr->v4l_memgrab_active = 0;
/* switch off VSync interrupts */
btand(~zr->card.vsync_int, ZR36057_ICR); // SW
/* reenable grabbing to screen if it was running */
if (zr->v4l_overlay_active) {
zr36057_overlay(zr, 1);
} else {
btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
}
}
}
int
wait_grab_pending (struct zoran *zr)
{
unsigned long flags;
/* wait until all pending grabs are finished */
if (!zr->v4l_memgrab_active)
return 0;
wait_event_interruptible(zr->v4l_capq,
(zr->v4l_pend_tail == zr->v4l_pend_head));
if (signal_pending(current))
return -ERESTARTSYS;
spin_lock_irqsave(&zr->spinlock, flags);
zr36057_set_memgrab(zr, 0);
spin_unlock_irqrestore(&zr->spinlock, flags);
return 0;
}
/*****************************************************************************
* *
* Set up the Buz-specific MJPEG part *
* *
*****************************************************************************/
static inline void
set_frame (struct zoran *zr,
int val)
{
GPIO(zr, zr->card.gpio[GPIO_JPEG_FRAME], val);
}
static void
set_videobus_dir (struct zoran *zr,
int val)
{
switch (zr->card.type) {
case LML33:
case LML33R10:
if (lml33dpath == 0)
GPIO(zr, 5, val);
else
GPIO(zr, 5, 1);
break;
default:
GPIO(zr, zr->card.gpio[GPIO_VID_DIR],
zr->card.gpio_pol[GPIO_VID_DIR] ? !val : val);
break;
}
}
static void
init_jpeg_queue (struct zoran *zr)
{
int i;
/* re-initialize DMA ring stuff */
zr->jpg_que_head = 0;
zr->jpg_dma_head = 0;
zr->jpg_dma_tail = 0;
zr->jpg_que_tail = 0;
zr->jpg_seq_num = 0;
zr->JPEG_error = 0;
zr->num_errors = 0;
zr->jpg_err_seq = 0;
zr->jpg_err_shift = 0;
zr->jpg_queued_num = 0;
for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER; /* nothing going on */
}
for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
zr->stat_com[i] = cpu_to_le32(1); /* mark as unavailable to zr36057 */
}
}
static void
zr36057_set_jpg (struct zoran *zr,
enum zoran_codec_mode mode)
{
struct tvnorm *tvn;
u32 reg;
tvn = zr->timing;
/* assert P_Reset, disable code transfer, deassert Active */
btwrite(0, ZR36057_JPC);
/* MJPEG compression mode */
switch (mode) {
case BUZ_MODE_MOTION_COMPRESS:
default:
reg = ZR36057_JMC_MJPGCmpMode;
break;
case BUZ_MODE_MOTION_DECOMPRESS:
reg = ZR36057_JMC_MJPGExpMode;
reg |= ZR36057_JMC_SyncMstr;
/* RJ: The following is experimental - improves the output to screen */
//if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
break;
case BUZ_MODE_STILL_COMPRESS:
reg = ZR36057_JMC_JPGCmpMode;
break;
case BUZ_MODE_STILL_DECOMPRESS:
reg = ZR36057_JMC_JPGExpMode;
break;
}
reg |= ZR36057_JMC_JPG;
if (zr->jpg_settings.field_per_buff == 1)
reg |= ZR36057_JMC_Fld_per_buff;
btwrite(reg, ZR36057_JMC);
/* vertical */
btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
reg = (6 << ZR36057_VSP_VsyncSize) |
(tvn->Ht << ZR36057_VSP_FrmTot);
btwrite(reg, ZR36057_VSP);
reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
(zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
btwrite(reg, ZR36057_FVAP);
/* horizontal */
if (zr->card.vfe_pol.hsync_pol)
btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
else
btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
(tvn->Wt << ZR36057_HSP_LineTot);
btwrite(reg, ZR36057_HSP);
reg = ((zr->jpg_settings.img_x +
tvn->HStart + 4) << ZR36057_FHAP_NAX) |
(zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
btwrite(reg, ZR36057_FHAP);
/* field process parameters */
if (zr->jpg_settings.odd_even)
reg = ZR36057_FPP_Odd_Even;
else
reg = 0;
btwrite(reg, ZR36057_FPP);
/* Set proper VCLK Polarity, else colors will be wrong during playback */
//btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
/* code base address */
reg = virt_to_bus(zr->stat_com);
btwrite(reg, ZR36057_JCBA);
/* FIFO threshold (FIFO is 160. double words) */
/* NOTE: decimal values here */
switch (mode) {
case BUZ_MODE_STILL_COMPRESS:
case BUZ_MODE_MOTION_COMPRESS:
if (zr->card.type != BUZ)
reg = 140;
else
reg = 60;
break;
case BUZ_MODE_STILL_DECOMPRESS:
case BUZ_MODE_MOTION_DECOMPRESS:
reg = 20;
break;
default:
reg = 80;
break;
}
btwrite(reg, ZR36057_JCFT);
zr36057_adjust_vfe(zr, mode);
}
void
print_interrupts (struct zoran *zr)
{
int res, noerr = 0;
printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
if ((res = zr->field_counter) < -1 || res > 1) {
printk(" FD:%d", res);
}
if ((res = zr->intr_counter_GIRQ1) != 0) {
printk(" GIRQ1:%d", res);
noerr++;
}
if ((res = zr->intr_counter_GIRQ0) != 0) {
printk(" GIRQ0:%d", res);
noerr++;
}
if ((res = zr->intr_counter_CodRepIRQ) != 0) {
printk(" CodRepIRQ:%d", res);
noerr++;
}
if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
printk(" JPEGRepIRQ:%d", res);
noerr++;
}
if (zr->JPEG_max_missed) {
printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
zr->JPEG_min_missed);
}
if (zr->END_event_missed) {
printk(" ENDs missed: %d", zr->END_event_missed);
}
//if (zr->jpg_queued_num) {
printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
//}
if (!noerr) {
printk(": no interrupts detected.");
}
printk("\n");
}
void
clear_interrupt_counters (struct zoran *zr)
{
zr->intr_counter_GIRQ1 = 0;
zr->intr_counter_GIRQ0 = 0;
zr->intr_counter_CodRepIRQ = 0;
zr->intr_counter_JPEGRepIRQ = 0;
zr->field_counter = 0;
zr->IRQ1_in = 0;
zr->IRQ1_out = 0;
zr->JPEG_in = 0;
zr->JPEG_out = 0;
zr->JPEG_0 = 0;
zr->JPEG_1 = 0;
zr->END_event_missed = 0;
zr->JPEG_missed = 0;
zr->JPEG_max_missed = 0;
zr->JPEG_min_missed = 0x7fffffff;
}
static u32
count_reset_interrupt (struct zoran *zr)
{
u32 isr;
if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
if (isr & ZR36057_ISR_GIRQ1) {
btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
zr->intr_counter_GIRQ1++;
}
if (isr & ZR36057_ISR_GIRQ0) {
btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
zr->intr_counter_GIRQ0++;
}
if (isr & ZR36057_ISR_CodRepIRQ) {
btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
zr->intr_counter_CodRepIRQ++;
}
if (isr & ZR36057_ISR_JPEGRepIRQ) {
btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
zr->intr_counter_JPEGRepIRQ++;
}
}
return isr;
}
/* hack */
extern void zr36016_write (struct videocodec *codec,
u16 reg,
u32 val);
void
jpeg_start (struct zoran *zr)
{
int reg;
zr->frame_num = 0;
/* deassert P_reset, disable code transfer, deassert Active */
btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
/* stop flushing the internal code buffer */
btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
/* enable code transfer */
btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
/* clear IRQs */
btwrite(IRQ_MASK, ZR36057_ISR);
/* enable the JPEG IRQs */
btwrite(zr->card.jpeg_int |
ZR36057_ICR_JPEGRepIRQ |
ZR36057_ICR_IntPinEn,
ZR36057_ICR);
set_frame(zr, 0); // \FRAME
/* set the JPEG codec guest ID */
reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
(0 << ZR36057_JCGI_JPEGuestReg);
btwrite(reg, ZR36057_JCGI);
if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
zr->card.video_codec == CODEC_TYPE_ZR36050) {
/* Enable processing on the ZR36016 */
if (zr->vfe)
zr36016_write(zr->vfe, 0, 1);
/* load the address of the GO register in the ZR36050 latch */
post_office_write(zr, 0, 0, 0);
}
/* assert Active */
btor(ZR36057_JPC_Active, ZR36057_JPC);
/* enable the Go generation */
btor(ZR36057_JMC_Go_en, ZR36057_JMC);
udelay(30);
set_frame(zr, 1); // /FRAME
dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
}
void
zr36057_enable_jpg (struct zoran *zr,
enum zoran_codec_mode mode)
{
static int zero = 0;
static int one = 1;
struct vfe_settings cap;
int field_size =
zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
zr->codec_mode = mode;
cap.x = zr->jpg_settings.img_x;
cap.y = zr->jpg_settings.img_y;
cap.width = zr->jpg_settings.img_width;
cap.height = zr->jpg_settings.img_height;
cap.decimation =
zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
cap.quality = zr->jpg_settings.jpg_comp.quality;
switch (mode) {
case BUZ_MODE_MOTION_COMPRESS: {
struct jpeg_app_marker app;
struct jpeg_com_marker com;
/* In motion compress mode, the decoder output must be enabled, and
* the video bus direction set to input.
*/
set_videobus_dir(zr, 0);
decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
encoder_command(zr, ENCODER_SET_INPUT, &zero);
/* Take the JPEG codec and the VFE out of sleep */
jpeg_codec_sleep(zr, 0);
/* set JPEG app/com marker */
app.appn = zr->jpg_settings.jpg_comp.APPn;
app.len = zr->jpg_settings.jpg_comp.APP_len;
memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
sizeof(struct jpeg_app_marker), &app);
com.len = zr->jpg_settings.jpg_comp.COM_len;
memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
sizeof(struct jpeg_com_marker), &com);
/* Setup the JPEG codec */
zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
sizeof(int), &field_size);
zr->codec->set_video(zr->codec, zr->timing, &cap,
&zr->card.vfe_pol);
zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
/* Setup the VFE */
if (zr->vfe) {
zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
sizeof(int), &field_size);
zr->vfe->set_video(zr->vfe, zr->timing, &cap,
&zr->card.vfe_pol);
zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
}
init_jpeg_queue(zr);
zr36057_set_jpg(zr, mode); // \P_Reset, ... Video param, FIFO
clear_interrupt_counters(zr);
dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
ZR_DEVNAME(zr));
break;
}
case BUZ_MODE_MOTION_DECOMPRESS:
/* In motion decompression mode, the decoder output must be disabled, and
* the video bus direction set to output.
*/
decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
set_videobus_dir(zr, 1);
encoder_command(zr, ENCODER_SET_INPUT, &one);
/* Take the JPEG codec and the VFE out of sleep */
jpeg_codec_sleep(zr, 0);
/* Setup the VFE */
if (zr->vfe) {
zr->vfe->set_video(zr->vfe, zr->timing, &cap,
&zr->card.vfe_pol);
zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
}
/* Setup the JPEG codec */
zr->codec->set_video(zr->codec, zr->timing, &cap,
&zr->card.vfe_pol);
zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
init_jpeg_queue(zr);
zr36057_set_jpg(zr, mode); // \P_Reset, ... Video param, FIFO
clear_interrupt_counters(zr);
dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
ZR_DEVNAME(zr));
break;
case BUZ_MODE_IDLE:
default:
/* shut down processing */
btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
ZR36057_ICR);
btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
ZR36057_ISR);
btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
msleep(50);
set_videobus_dir(zr, 0);
set_frame(zr, 1); // /FRAME
btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR); // /CFlush
btwrite(0, ZR36057_JPC); // \P_Reset,\CodTrnsEn,\Active
btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
jpeg_codec_reset(zr);
jpeg_codec_sleep(zr, 1);
zr36057_adjust_vfe(zr, mode);
decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
encoder_command(zr, ENCODER_SET_INPUT, &zero);
dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
break;
}
}
/* when this is called the spinlock must be held */
void
zoran_feed_stat_com (struct zoran *zr)
{
/* move frames from pending queue to DMA */
int frame, i, max_stat_com;
max_stat_com =
(zr->jpg_settings.TmpDcm ==
1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
zr->jpg_dma_head < zr->jpg_que_head) {
frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
if (zr->jpg_settings.TmpDcm == 1) {
/* fill 1 stat_com entry */
i = (zr->jpg_dma_head -
zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
if (!(zr->stat_com[i] & cpu_to_le32(1)))
break;
zr->stat_com[i] =
cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
} else {
/* fill 2 stat_com entries */
i = ((zr->jpg_dma_head -
zr->jpg_err_shift) & 1) * 2;
if (!(zr->stat_com[i] & cpu_to_le32(1)))
break;
zr->stat_com[i] =
cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
zr->stat_com[i + 1] =
cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
}
zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
zr->jpg_dma_head++;
}
if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
zr->jpg_queued_num++;
}
/* when this is called the spinlock must be held */
static void
zoran_reap_stat_com (struct zoran *zr)
{
/* move frames from DMA queue to done queue */
int i;
u32 stat_com;
unsigned int seq;
unsigned int dif;
struct zoran_jpg_buffer *buffer;
int frame;
/* In motion decompress we don't have a hardware frame counter,
* we just count the interrupts here */
if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
zr->jpg_seq_num++;
}
while (zr->jpg_dma_tail < zr->jpg_dma_head) {
if (zr->jpg_settings.TmpDcm == 1)
i = (zr->jpg_dma_tail -
zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
else
i = ((zr->jpg_dma_tail -
zr->jpg_err_shift) & 1) * 2 + 1;
stat_com = le32_to_cpu(zr->stat_com[i]);
if ((stat_com & 1) == 0) {
return;
}
frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
buffer = &zr->jpg_buffers.buffer[frame];
do_gettimeofday(&buffer->bs.timestamp);
if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
buffer->bs.length = (stat_com & 0x7fffff) >> 1;
/* update sequence number with the help of the counter in stat_com */
seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
dif = (seq - zr->jpg_seq_num) & 0xff;
zr->jpg_seq_num += dif;
} else {
buffer->bs.length = 0;
}
buffer->bs.seq =
zr->jpg_settings.TmpDcm ==
2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
buffer->state = BUZ_STATE_DONE;
zr->jpg_dma_tail++;
}
}
static void
error_handler (struct zoran *zr,
u32 astat,
u32 stat)
{
/* This is JPEG error handling part */
if ((zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) &&
(zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS)) {
//dprintk(1, KERN_ERR "%s: Internal error: error handling request in mode %d\n", ZR_DEVNAME(zr), zr->codec_mode);
return;
}
if ((stat & 1) == 0 &&
zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
zr->jpg_dma_tail - zr->jpg_que_tail >=
zr->jpg_buffers.num_buffers) {
/* No free buffers... */
zoran_reap_stat_com(zr);
zoran_feed_stat_com(zr);
wake_up_interruptible(&zr->jpg_capq);
zr->JPEG_missed = 0;
return;
}
if (zr->JPEG_error != 1) {
/*
* First entry: error just happened during normal operation
*
* In BUZ_MODE_MOTION_COMPRESS:
*
* Possible glitch in TV signal. In this case we should
* stop the codec and wait for good quality signal before
* restarting it to avoid further problems
*
* In BUZ_MODE_MOTION_DECOMPRESS:
*
* Bad JPEG frame: we have to mark it as processed (codec crashed
* and was not able to do it itself), and to remove it from queue.
*/
btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
udelay(1);
stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
btwrite(0, ZR36057_JPC);
btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
jpeg_codec_reset(zr);
jpeg_codec_sleep(zr, 1);
zr->JPEG_error = 1;
zr->num_errors++;
/* Report error */
if (*zr_debug > 1 && zr->num_errors <= 8) {
long frame;
frame =
zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
printk(KERN_ERR
"%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
ZR_DEVNAME(zr), stat, zr->last_isr,
zr->jpg_que_tail, zr->jpg_dma_tail,
zr->jpg_dma_head, zr->jpg_que_head,
zr->jpg_seq_num, frame);
printk("stat_com frames:");
{
int i, j;
for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
for (i = 0;
i < zr->jpg_buffers.num_buffers;
i++) {
if (le32_to_cpu(zr->stat_com[j]) ==
zr->jpg_buffers.
buffer[i].
frag_tab_bus) {
printk("% d->%d",
j, i);
}
}
}
printk("\n");
}
}
/* Find an entry in stat_com and rotate contents */
{
int i;
if (zr->jpg_settings.TmpDcm == 1)
i = (zr->jpg_dma_tail -
zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
else
i = ((zr->jpg_dma_tail -
zr->jpg_err_shift) & 1) * 2;
if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
/* Mimic zr36067 operation */
zr->stat_com[i] |= cpu_to_le32(1);
if (zr->jpg_settings.TmpDcm != 1)
zr->stat_com[i + 1] |= cpu_to_le32(1);
/* Refill */
zoran_reap_stat_com(zr);
zoran_feed_stat_com(zr);
wake_up_interruptible(&zr->jpg_capq);
/* Find an entry in stat_com again after refill */
if (zr->jpg_settings.TmpDcm == 1)
i = (zr->jpg_dma_tail -
zr->jpg_err_shift) &
BUZ_MASK_STAT_COM;
else
i = ((zr->jpg_dma_tail -
zr->jpg_err_shift) & 1) * 2;
}
if (i) {
/* Rotate stat_comm entries to make current entry first */
int j;
u32 bus_addr[BUZ_NUM_STAT_COM];
/* Here we are copying the stat_com array, which
* is already in little endian format, so
* no endian conversions here
*/
memcpy(bus_addr, zr->stat_com,
sizeof(bus_addr));
for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
zr->stat_com[j] =
bus_addr[(i + j) &
BUZ_MASK_STAT_COM];
}
zr->jpg_err_shift += i;
zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
}
if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
zr->jpg_err_seq = zr->jpg_seq_num; /* + 1; */
}
}
/* Now the stat_comm buffer is ready for restart */
do {
int status, mode;
if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
decoder_command(zr, DECODER_GET_STATUS, &status);
mode = CODEC_DO_COMPRESSION;
} else {
status = 0;
mode = CODEC_DO_EXPANSION;
}
if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
(status & DECODER_STATUS_GOOD)) {
/********** RESTART code *************/
jpeg_codec_reset(zr);
zr->codec->set_mode(zr->codec, mode);
zr36057_set_jpg(zr, zr->codec_mode);
jpeg_start(zr);
if (zr->num_errors <= 8)
dprintk(2, KERN_INFO "%s: Restart\n",
ZR_DEVNAME(zr));
zr->JPEG_missed = 0;
zr->JPEG_error = 2;
/********** End RESTART code ***********/
}
} while (0);
}
irqreturn_t
zoran_irq (int irq,
void *dev_id)
{
u32 stat, astat;
int count;
struct zoran *zr;
unsigned long flags;
zr = (struct zoran *) dev_id;
count = 0;
if (zr->testing) {
/* Testing interrupts */
spin_lock_irqsave(&zr->spinlock, flags);
while ((stat = count_reset_interrupt(zr))) {
if (count++ > 100) {
btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
dprintk(1,
KERN_ERR
"%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
ZR_DEVNAME(zr), stat);
wake_up_interruptible(&zr->test_q);
}
}
zr->last_isr = stat;
spin_unlock_irqrestore(&zr->spinlock, flags);
return IRQ_HANDLED;
}
spin_lock_irqsave(&zr->spinlock, flags);
while (1) {
/* get/clear interrupt status bits */
stat = count_reset_interrupt(zr);
astat = stat & IRQ_MASK;
if (!astat) {
break;
}
dprintk(4,
KERN_DEBUG
"zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
astat, btread(ZR36057_ICR));
if (astat & zr->card.vsync_int) { // SW
if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
/* count missed interrupts */
zr->JPEG_missed++;
}
//post_office_read(zr,1,0);
/* Interrupts may still happen when
* zr->v4l_memgrab_active is switched off.
* We simply ignore them */
if (zr->v4l_memgrab_active) {
/* A lot more checks should be here ... */
if ((btread(ZR36057_VSSFGR) &
ZR36057_VSSFGR_SnapShot) == 0)
dprintk(1,
KERN_WARNING
"%s: BuzIRQ with SnapShot off ???\n",
ZR_DEVNAME(zr));
if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
/* There is a grab on a frame going on, check if it has finished */
if ((btread(ZR36057_VSSFGR) &
ZR36057_VSSFGR_FrameGrab) ==
0) {
/* it is finished, notify the user */
zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
do_gettimeofday(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
zr->v4l_grab_frame = NO_GRAB_ACTIVE;
zr->v4l_pend_tail++;
}
}
if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
wake_up_interruptible(&zr->v4l_capq);
/* Check if there is another grab queued */
if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
zr->v4l_pend_tail != zr->v4l_pend_head) {
int frame = zr->v4l_pend[zr->v4l_pend_tail &
V4L_MASK_FRAME];
u32 reg;
zr->v4l_grab_frame = frame;
/* Set zr36057 video front end and enable video */
/* Buffer address */
reg =
zr->v4l_buffers.buffer[frame].
fbuffer_bus;
btwrite(reg, ZR36057_VDTR);
if (zr->v4l_settings.height >
BUZ_MAX_HEIGHT / 2)
reg +=
zr->v4l_settings.
bytesperline;
btwrite(reg, ZR36057_VDBR);
/* video stride, status, and frame grab register */
reg = 0;
if (zr->v4l_settings.height >
BUZ_MAX_HEIGHT / 2)
reg +=
zr->v4l_settings.
bytesperline;
reg =
(reg <<
ZR36057_VSSFGR_DispStride);
reg |= ZR36057_VSSFGR_VidOvf;
reg |= ZR36057_VSSFGR_SnapShot;
reg |= ZR36057_VSSFGR_FrameGrab;
btwrite(reg, ZR36057_VSSFGR);
btor(ZR36057_VDCR_VidEn,
ZR36057_VDCR);
}
}
/* even if we don't grab, we do want to increment
* the sequence counter to see lost frames */
zr->v4l_grab_seq++;
}
#if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
if (astat & ZR36057_ISR_CodRepIRQ) {
zr->intr_counter_CodRepIRQ++;
IDEBUG(printk
(KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
ZR_DEVNAME(zr)));
btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
}
#endif /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
#if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
if (astat & ZR36057_ISR_JPEGRepIRQ) {
if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
if (*zr_debug > 1 &&
(!zr->frame_num || zr->JPEG_error)) {
printk(KERN_INFO
"%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
ZR_DEVNAME(zr), stat,
zr->jpg_settings.odd_even,
zr->jpg_settings.
field_per_buff,
zr->JPEG_missed);
{
char sc[] = "0000";
char sv[5];
int i;
strcpy(sv, sc);
for (i = 0; i < 4; i++) {
if (le32_to_cpu(zr->stat_com[i]) & 1)
sv[i] = '1';
}
sv[4] = 0;
printk(KERN_INFO
"%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
ZR_DEVNAME(zr), sv,
zr->jpg_que_tail,
zr->jpg_dma_tail,
zr->jpg_dma_head,
zr->jpg_que_head);
}
} else {
if (zr->JPEG_missed > zr->JPEG_max_missed) // Get statistics
zr->JPEG_max_missed =
zr->JPEG_missed;
if (zr->JPEG_missed <
zr->JPEG_min_missed)
zr->JPEG_min_missed =
zr->JPEG_missed;
}
if (*zr_debug > 2 && zr->frame_num < 6) {
int i;
printk("%s: seq=%ld stat_com:",
ZR_DEVNAME(zr), zr->jpg_seq_num);
for (i = 0; i < 4; i++) {
printk(" %08x",
le32_to_cpu(zr->stat_com[i]));
}
printk("\n");
}
zr->frame_num++;
zr->JPEG_missed = 0;
zr->JPEG_error = 0;
zoran_reap_stat_com(zr);
zoran_feed_stat_com(zr);
wake_up_interruptible(&zr->jpg_capq);
} /*else {
dprintk(1,
KERN_ERR
"%s: JPEG interrupt while not in motion (de)compress mode!\n",
ZR_DEVNAME(zr));
}*/
}
#endif /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
/* DATERR, too many fields missed, error processing */
if ((astat & zr->card.jpeg_int) ||
zr->JPEG_missed > 25 ||
zr->JPEG_error == 1 ||
((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
(zr->frame_num & (zr->JPEG_missed >
zr->jpg_settings.field_per_buff)))) {
error_handler(zr, astat, stat);
}
count++;
if (count > 10) {
dprintk(2, KERN_WARNING "%s: irq loop %d\n",
ZR_DEVNAME(zr), count);
if (count > 20) {
btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
dprintk(2,
KERN_ERR
"%s: IRQ lockup, cleared int mask\n",
ZR_DEVNAME(zr));
break;
}
}
zr->last_isr = stat;
}
spin_unlock_irqrestore(&zr->spinlock, flags);
return IRQ_HANDLED;
}
void
zoran_set_pci_master (struct zoran *zr,
int set_master)
{
if (set_master) {
pci_set_master(zr->pci_dev);
} else {
u16 command;
pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
command &= ~PCI_COMMAND_MASTER;
pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
}
}
void
zoran_init_hardware (struct zoran *zr)
{
int j, zero = 0;
/* Enable bus-mastering */
zoran_set_pci_master(zr, 1);
/* Initialize the board */
if (zr->card.init) {
zr->card.init(zr);
}
j = zr->card.input[zr->input].muxsel;
decoder_command(zr, 0, NULL);
decoder_command(zr, DECODER_SET_NORM, &zr->norm);
decoder_command(zr, DECODER_SET_INPUT, &j);
encoder_command(zr, 0, NULL);
encoder_command(zr, ENCODER_SET_NORM, &zr->norm);
encoder_command(zr, ENCODER_SET_INPUT, &zero);
/* toggle JPEG codec sleep to sync PLL */
jpeg_codec_sleep(zr, 1);
jpeg_codec_sleep(zr, 0);
/* set individual interrupt enables (without GIRQ1)
* but don't global enable until zoran_open() */
//btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR); // SW
// It looks like using only JPEGRepIRQEn is not always reliable,
// may be when JPEG codec crashes it won't generate IRQ? So,
/*CP*/ // btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM WHY ? LP
zr36057_init_vfe(zr);
zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
}
void
zr36057_restart (struct zoran *zr)
{
btwrite(0, ZR36057_SPGPPCR);
mdelay(1);
btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
mdelay(1);
/* assert P_Reset */
btwrite(0, ZR36057_JPC);
/* set up GPIO direction - all output */
btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
/* set up GPIO pins and guest bus timing */
btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
}
/*
* initialize video front end
*/
static void
zr36057_init_vfe (struct zoran *zr)
{
u32 reg;
reg = btread(ZR36057_VFESPFR);
reg |= ZR36057_VFESPFR_LittleEndian;
reg &= ~ZR36057_VFESPFR_VCLKPol;
reg |= ZR36057_VFESPFR_ExtFl;
reg |= ZR36057_VFESPFR_TopField;
btwrite(reg, ZR36057_VFESPFR);
reg = btread(ZR36057_VDCR);
if (pci_pci_problems & PCIPCI_TRITON)
// || zr->revision < 1) // Revision 1 has also Triton support
reg &= ~ZR36057_VDCR_Triton;
else
reg |= ZR36057_VDCR_Triton;
btwrite(reg, ZR36057_VDCR);
}
/*
* Interface to decoder and encoder chips using i2c bus
*/
int
decoder_command (struct zoran *zr,
int cmd,
void *data)
{
if (zr->decoder == NULL)
return -EIO;
if (zr->card.type == LML33 &&
(cmd == DECODER_SET_NORM || DECODER_SET_INPUT)) {
int res;
// Bt819 needs to reset its FIFO buffer using #FRST pin and
// LML33 card uses GPIO(7) for that.
GPIO(zr, 7, 0);
res = zr->decoder->driver->command(zr->decoder, cmd, data);
// Pull #FRST high.
GPIO(zr, 7, 1);
return res;
} else
return zr->decoder->driver->command(zr->decoder, cmd,
data);
}
int
encoder_command (struct zoran *zr,
int cmd,
void *data)
{
if (zr->encoder == NULL)
return -1;
return zr->encoder->driver->command(zr->encoder, cmd, data);
}
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