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linux/drivers/media/pci/zoran/zoran_driver.c
Mauro Carvalho Chehab 9ca3ae0d5e [media] zoran: annotate switch fall through 
There are two cases here that it does a switch fall through.
Annotate it, in order to shut up gcc warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-05-19 09:02:13 -03:00

2850 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.
*
* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
*
* Changes for BUZ by Wolfgang Scherr <scherr@net4you.net>
*
* Changes for DC10/DC30 by Laurent Pinchart <laurent.pinchart@skynet.be>
*
* Changes for LML33R10 by Maxim Yevtyushkin <max@linuxmedialabs.com>
*
* Changes for videodev2/v4l2 by Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* Based on
*
* Miro DC10 driver
* Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
*
* Iomega Buz driver version 1.0
* Copyright (C) 1999 Rainer Johanni <Rainer@Johanni.de>
*
* buz.0.0.3
* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
*
* bttv - Bt848 frame grabber driver
* Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
* & Marcus Metzler (mocm@thp.uni-koeln.de)
*
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/vmalloc.h>
#include <linux/wait.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/spinlock.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#include "videocodec.h"
#include <asm/byteorder.h>
#include <asm/io.h>
#include <linux/uaccess.h>
#include <linux/proc_fs.h>
#include <linux/mutex.h>
#include "zoran.h"
#include "zoran_device.h"
#include "zoran_card.h"
const struct zoran_format zoran_formats[] = {
{
.name = "15-bit RGB LE",
.fourcc = V4L2_PIX_FMT_RGB555,
.colorspace = V4L2_COLORSPACE_SRGB,
.depth = 15,
.flags = ZORAN_FORMAT_CAPTURE |
ZORAN_FORMAT_OVERLAY,
.vfespfr = ZR36057_VFESPFR_RGB555|ZR36057_VFESPFR_ErrDif|
ZR36057_VFESPFR_LittleEndian,
}, {
.name = "15-bit RGB BE",
.fourcc = V4L2_PIX_FMT_RGB555X,
.colorspace = V4L2_COLORSPACE_SRGB,
.depth = 15,
.flags = ZORAN_FORMAT_CAPTURE |
ZORAN_FORMAT_OVERLAY,
.vfespfr = ZR36057_VFESPFR_RGB555|ZR36057_VFESPFR_ErrDif,
}, {
.name = "16-bit RGB LE",
.fourcc = V4L2_PIX_FMT_RGB565,
.colorspace = V4L2_COLORSPACE_SRGB,
.depth = 16,
.flags = ZORAN_FORMAT_CAPTURE |
ZORAN_FORMAT_OVERLAY,
.vfespfr = ZR36057_VFESPFR_RGB565|ZR36057_VFESPFR_ErrDif|
ZR36057_VFESPFR_LittleEndian,
}, {
.name = "16-bit RGB BE",
.fourcc = V4L2_PIX_FMT_RGB565X,
.colorspace = V4L2_COLORSPACE_SRGB,
.depth = 16,
.flags = ZORAN_FORMAT_CAPTURE |
ZORAN_FORMAT_OVERLAY,
.vfespfr = ZR36057_VFESPFR_RGB565|ZR36057_VFESPFR_ErrDif,
}, {
.name = "24-bit RGB",
.fourcc = V4L2_PIX_FMT_BGR24,
.colorspace = V4L2_COLORSPACE_SRGB,
.depth = 24,
.flags = ZORAN_FORMAT_CAPTURE |
ZORAN_FORMAT_OVERLAY,
.vfespfr = ZR36057_VFESPFR_RGB888|ZR36057_VFESPFR_Pack24,
}, {
.name = "32-bit RGB LE",
.fourcc = V4L2_PIX_FMT_BGR32,
.colorspace = V4L2_COLORSPACE_SRGB,
.depth = 32,
.flags = ZORAN_FORMAT_CAPTURE |
ZORAN_FORMAT_OVERLAY,
.vfespfr = ZR36057_VFESPFR_RGB888|ZR36057_VFESPFR_LittleEndian,
}, {
.name = "32-bit RGB BE",
.fourcc = V4L2_PIX_FMT_RGB32,
.colorspace = V4L2_COLORSPACE_SRGB,
.depth = 32,
.flags = ZORAN_FORMAT_CAPTURE |
ZORAN_FORMAT_OVERLAY,
.vfespfr = ZR36057_VFESPFR_RGB888,
}, {
.name = "4:2:2, packed, YUYV",
.fourcc = V4L2_PIX_FMT_YUYV,
.colorspace = V4L2_COLORSPACE_SMPTE170M,
.depth = 16,
.flags = ZORAN_FORMAT_CAPTURE |
ZORAN_FORMAT_OVERLAY,
.vfespfr = ZR36057_VFESPFR_YUV422,
}, {
.name = "4:2:2, packed, UYVY",
.fourcc = V4L2_PIX_FMT_UYVY,
.colorspace = V4L2_COLORSPACE_SMPTE170M,
.depth = 16,
.flags = ZORAN_FORMAT_CAPTURE |
ZORAN_FORMAT_OVERLAY,
.vfespfr = ZR36057_VFESPFR_YUV422|ZR36057_VFESPFR_LittleEndian,
}, {
.name = "Hardware-encoded Motion-JPEG",
.fourcc = V4L2_PIX_FMT_MJPEG,
.colorspace = V4L2_COLORSPACE_SMPTE170M,
.depth = 0,
.flags = ZORAN_FORMAT_CAPTURE |
ZORAN_FORMAT_PLAYBACK |
ZORAN_FORMAT_COMPRESSED,
}
};
#define NUM_FORMATS ARRAY_SIZE(zoran_formats)
/* small helper function for calculating buffersizes for v4l2
* we calculate the nearest higher power-of-two, which
* will be the recommended buffersize */
static __u32
zoran_v4l2_calc_bufsize (struct zoran_jpg_settings *settings)
{
__u8 div = settings->VerDcm * settings->HorDcm * settings->TmpDcm;
__u32 num = (1024 * 512) / (div);
__u32 result = 2;
num--;
while (num) {
num >>= 1;
result <<= 1;
}
if (result > jpg_bufsize)
return jpg_bufsize;
if (result < 8192)
return 8192;
return result;
}
/* forward references */
static void v4l_fbuffer_free(struct zoran_fh *fh);
static void jpg_fbuffer_free(struct zoran_fh *fh);
/* Set mapping mode */
static void map_mode_raw(struct zoran_fh *fh)
{
fh->map_mode = ZORAN_MAP_MODE_RAW;
fh->buffers.buffer_size = v4l_bufsize;
fh->buffers.num_buffers = v4l_nbufs;
}
static void map_mode_jpg(struct zoran_fh *fh, int play)
{
fh->map_mode = play ? ZORAN_MAP_MODE_JPG_PLAY : ZORAN_MAP_MODE_JPG_REC;
fh->buffers.buffer_size = jpg_bufsize;
fh->buffers.num_buffers = jpg_nbufs;
}
static inline const char *mode_name(enum zoran_map_mode mode)
{
return mode == ZORAN_MAP_MODE_RAW ? "V4L" : "JPG";
}
/*
* Allocate the V4L grab buffers
*
* These have to be pysically contiguous.
*/
static int v4l_fbuffer_alloc(struct zoran_fh *fh)
{
struct zoran *zr = fh->zr;
int i, off;
unsigned char *mem;
for (i = 0; i < fh->buffers.num_buffers; i++) {
if (fh->buffers.buffer[i].v4l.fbuffer)
dprintk(2,
KERN_WARNING
"%s: %s - buffer %d already allocated!?\n",
ZR_DEVNAME(zr), __func__, i);
//udelay(20);
mem = kmalloc(fh->buffers.buffer_size,
GFP_KERNEL | __GFP_NOWARN);
if (!mem) {
dprintk(1,
KERN_ERR
"%s: %s - kmalloc for V4L buf %d failed\n",
ZR_DEVNAME(zr), __func__, i);
v4l_fbuffer_free(fh);
return -ENOBUFS;
}
fh->buffers.buffer[i].v4l.fbuffer = mem;
fh->buffers.buffer[i].v4l.fbuffer_phys = virt_to_phys(mem);
fh->buffers.buffer[i].v4l.fbuffer_bus = virt_to_bus(mem);
for (off = 0; off < fh->buffers.buffer_size;
off += PAGE_SIZE)
SetPageReserved(virt_to_page(mem + off));
dprintk(4,
KERN_INFO
"%s: %s - V4L frame %d mem 0x%lx (bus: 0x%llx)\n",
ZR_DEVNAME(zr), __func__, i, (unsigned long) mem,
(unsigned long long)virt_to_bus(mem));
}
fh->buffers.allocated = 1;
return 0;
}
/* free the V4L grab buffers */
static void v4l_fbuffer_free(struct zoran_fh *fh)
{
struct zoran *zr = fh->zr;
int i, off;
unsigned char *mem;
dprintk(4, KERN_INFO "%s: %s\n", ZR_DEVNAME(zr), __func__);
for (i = 0; i < fh->buffers.num_buffers; i++) {
if (!fh->buffers.buffer[i].v4l.fbuffer)
continue;
mem = fh->buffers.buffer[i].v4l.fbuffer;
for (off = 0; off < fh->buffers.buffer_size;
off += PAGE_SIZE)
ClearPageReserved(virt_to_page(mem + off));
kfree(fh->buffers.buffer[i].v4l.fbuffer);
fh->buffers.buffer[i].v4l.fbuffer = NULL;
}
fh->buffers.allocated = 0;
}
/*
* Allocate the MJPEG grab buffers.
*
* If a Natoma chipset is present and this is a revision 1 zr36057,
* each MJPEG buffer needs to be physically contiguous.
* (RJ: This statement is from Dave Perks' original driver,
* I could never check it because I have a zr36067)
*
* RJ: The contents grab buffers needs never be accessed in the driver.
* Therefore there is no need to allocate them with vmalloc in order
* to get a contiguous virtual memory space.
* I don't understand why many other drivers first allocate them with
* vmalloc (which uses internally also get_zeroed_page, but delivers you
* virtual addresses) and then again have to make a lot of efforts
* to get the physical address.
*
* Ben Capper:
* On big-endian architectures (such as ppc) some extra steps
* are needed. When reading and writing to the stat_com array
* and fragment buffers, the device expects to see little-
* endian values. The use of cpu_to_le32() and le32_to_cpu()
* in this function (and one or two others in zoran_device.c)
* ensure that these values are always stored in little-endian
* form, regardless of architecture. The zr36057 does Very Bad
* Things on big endian architectures if the stat_com array
* and fragment buffers are not little-endian.
*/
static int jpg_fbuffer_alloc(struct zoran_fh *fh)
{
struct zoran *zr = fh->zr;
int i, j, off;
u8 *mem;
for (i = 0; i < fh->buffers.num_buffers; i++) {
if (fh->buffers.buffer[i].jpg.frag_tab)
dprintk(2,
KERN_WARNING
"%s: %s - buffer %d already allocated!?\n",
ZR_DEVNAME(zr), __func__, i);
/* Allocate fragment table for this buffer */
mem = (void *)get_zeroed_page(GFP_KERNEL);
if (!mem) {
dprintk(1,
KERN_ERR
"%s: %s - get_zeroed_page (frag_tab) failed for buffer %d\n",
ZR_DEVNAME(zr), __func__, i);
jpg_fbuffer_free(fh);
return -ENOBUFS;
}
fh->buffers.buffer[i].jpg.frag_tab = (__le32 *)mem;
fh->buffers.buffer[i].jpg.frag_tab_bus = virt_to_bus(mem);
if (fh->buffers.need_contiguous) {
mem = kmalloc(fh->buffers.buffer_size, GFP_KERNEL);
if (mem == NULL) {
dprintk(1,
KERN_ERR
"%s: %s - kmalloc failed for buffer %d\n",
ZR_DEVNAME(zr), __func__, i);
jpg_fbuffer_free(fh);
return -ENOBUFS;
}
fh->buffers.buffer[i].jpg.frag_tab[0] =
cpu_to_le32(virt_to_bus(mem));
fh->buffers.buffer[i].jpg.frag_tab[1] =
cpu_to_le32((fh->buffers.buffer_size >> 1) | 1);
for (off = 0; off < fh->buffers.buffer_size; off += PAGE_SIZE)
SetPageReserved(virt_to_page(mem + off));
} else {
/* jpg_bufsize is already page aligned */
for (j = 0; j < fh->buffers.buffer_size / PAGE_SIZE; j++) {
mem = (void *)get_zeroed_page(GFP_KERNEL);
if (mem == NULL) {
dprintk(1,
KERN_ERR
"%s: %s - get_zeroed_page failed for buffer %d\n",
ZR_DEVNAME(zr), __func__, i);
jpg_fbuffer_free(fh);
return -ENOBUFS;
}
fh->buffers.buffer[i].jpg.frag_tab[2 * j] =
cpu_to_le32(virt_to_bus(mem));
fh->buffers.buffer[i].jpg.frag_tab[2 * j + 1] =
cpu_to_le32((PAGE_SIZE >> 2) << 1);
SetPageReserved(virt_to_page(mem));
}
fh->buffers.buffer[i].jpg.frag_tab[2 * j - 1] |= cpu_to_le32(1);
}
}
dprintk(4,
KERN_DEBUG "%s: %s - %d KB allocated\n",
ZR_DEVNAME(zr), __func__,
(fh->buffers.num_buffers * fh->buffers.buffer_size) >> 10);
fh->buffers.allocated = 1;
return 0;
}
/* free the MJPEG grab buffers */
static void jpg_fbuffer_free(struct zoran_fh *fh)
{
struct zoran *zr = fh->zr;
int i, j, off;
unsigned char *mem;
__le32 frag_tab;
struct zoran_buffer *buffer;
dprintk(4, KERN_DEBUG "%s: %s\n", ZR_DEVNAME(zr), __func__);
for (i = 0, buffer = &fh->buffers.buffer[0];
i < fh->buffers.num_buffers; i++, buffer++) {
if (!buffer->jpg.frag_tab)
continue;
if (fh->buffers.need_contiguous) {
frag_tab = buffer->jpg.frag_tab[0];
if (frag_tab) {
mem = bus_to_virt(le32_to_cpu(frag_tab));
for (off = 0; off < fh->buffers.buffer_size; off += PAGE_SIZE)
ClearPageReserved(virt_to_page(mem + off));
kfree(mem);
buffer->jpg.frag_tab[0] = 0;
buffer->jpg.frag_tab[1] = 0;
}
} else {
for (j = 0; j < fh->buffers.buffer_size / PAGE_SIZE; j++) {
frag_tab = buffer->jpg.frag_tab[2 * j];
if (!frag_tab)
break;
ClearPageReserved(virt_to_page(bus_to_virt(le32_to_cpu(frag_tab))));
free_page((unsigned long)bus_to_virt(le32_to_cpu(frag_tab)));
buffer->jpg.frag_tab[2 * j] = 0;
buffer->jpg.frag_tab[2 * j + 1] = 0;
}
}
free_page((unsigned long)buffer->jpg.frag_tab);
buffer->jpg.frag_tab = NULL;
}
fh->buffers.allocated = 0;
}
/*
* V4L Buffer grabbing
*/
static int
zoran_v4l_set_format (struct zoran_fh *fh,
int width,
int height,
const struct zoran_format *format)
{
struct zoran *zr = fh->zr;
int bpp;
/* Check size and format of the grab wanted */
if (height < BUZ_MIN_HEIGHT || width < BUZ_MIN_WIDTH ||
height > BUZ_MAX_HEIGHT || width > BUZ_MAX_WIDTH) {
dprintk(1,
KERN_ERR
"%s: %s - wrong frame size (%dx%d)\n",
ZR_DEVNAME(zr), __func__, width, height);
return -EINVAL;
}
bpp = (format->depth + 7) / 8;
/* Check against available buffer size */
if (height * width * bpp > fh->buffers.buffer_size) {
dprintk(1,
KERN_ERR
"%s: %s - video buffer size (%d kB) is too small\n",
ZR_DEVNAME(zr), __func__, fh->buffers.buffer_size >> 10);
return -EINVAL;
}
/* The video front end needs 4-byte alinged line sizes */
if ((bpp == 2 && (width & 1)) || (bpp == 3 && (width & 3))) {
dprintk(1,
KERN_ERR
"%s: %s - wrong frame alignment\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
fh->v4l_settings.width = width;
fh->v4l_settings.height = height;
fh->v4l_settings.format = format;
fh->v4l_settings.bytesperline = bpp * fh->v4l_settings.width;
return 0;
}
static int zoran_v4l_queue_frame(struct zoran_fh *fh, int num)
{
struct zoran *zr = fh->zr;
unsigned long flags;
int res = 0;
if (!fh->buffers.allocated) {
dprintk(1,
KERN_ERR
"%s: %s - buffers not yet allocated\n",
ZR_DEVNAME(zr), __func__);
res = -ENOMEM;
}
/* No grabbing outside the buffer range! */
if (num >= fh->buffers.num_buffers || num < 0) {
dprintk(1,
KERN_ERR
"%s: %s - buffer %d is out of range\n",
ZR_DEVNAME(zr), __func__, num);
res = -EINVAL;
}
spin_lock_irqsave(&zr->spinlock, flags);
if (fh->buffers.active == ZORAN_FREE) {
if (zr->v4l_buffers.active == ZORAN_FREE) {
zr->v4l_buffers = fh->buffers;
fh->buffers.active = ZORAN_ACTIVE;
} else {
dprintk(1,
KERN_ERR
"%s: %s - another session is already capturing\n",
ZR_DEVNAME(zr), __func__);
res = -EBUSY;
}
}
/* make sure a grab isn't going on currently with this buffer */
if (!res) {
switch (zr->v4l_buffers.buffer[num].state) {
default:
case BUZ_STATE_PEND:
if (zr->v4l_buffers.active == ZORAN_FREE) {
fh->buffers.active = ZORAN_FREE;
zr->v4l_buffers.allocated = 0;
}
res = -EBUSY; /* what are you doing? */
break;
case BUZ_STATE_DONE:
dprintk(2,
KERN_WARNING
"%s: %s - queueing buffer %d in state DONE!?\n",
ZR_DEVNAME(zr), __func__, num);
/* fall through */
case BUZ_STATE_USER:
/* since there is at least one unused buffer there's room for at least
* one more pend[] entry */
zr->v4l_pend[zr->v4l_pend_head++ & V4L_MASK_FRAME] = num;
zr->v4l_buffers.buffer[num].state = BUZ_STATE_PEND;
zr->v4l_buffers.buffer[num].bs.length =
fh->v4l_settings.bytesperline *
zr->v4l_settings.height;
fh->buffers.buffer[num] = zr->v4l_buffers.buffer[num];
break;
}
}
spin_unlock_irqrestore(&zr->spinlock, flags);
if (!res && zr->v4l_buffers.active == ZORAN_FREE)
zr->v4l_buffers.active = fh->buffers.active;
return res;
}
/*
* Sync on a V4L buffer
*/
static int v4l_sync(struct zoran_fh *fh, int frame)
{
struct zoran *zr = fh->zr;
unsigned long flags;
if (fh->buffers.active == ZORAN_FREE) {
dprintk(1,
KERN_ERR
"%s: %s - no grab active for this session\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
/* check passed-in frame number */
if (frame >= fh->buffers.num_buffers || frame < 0) {
dprintk(1,
KERN_ERR "%s: %s - frame %d is invalid\n",
ZR_DEVNAME(zr), __func__, frame);
return -EINVAL;
}
/* Check if is buffer was queued at all */
if (zr->v4l_buffers.buffer[frame].state == BUZ_STATE_USER) {
dprintk(1,
KERN_ERR
"%s: %s - attempt to sync on a buffer which was not queued?\n",
ZR_DEVNAME(zr), __func__);
return -EPROTO;
}
mutex_unlock(&zr->lock);
/* wait on this buffer to get ready */
if (!wait_event_interruptible_timeout(zr->v4l_capq,
(zr->v4l_buffers.buffer[frame].state != BUZ_STATE_PEND), 10*HZ)) {
mutex_lock(&zr->lock);
return -ETIME;
}
mutex_lock(&zr->lock);
if (signal_pending(current))
return -ERESTARTSYS;
/* buffer should now be in BUZ_STATE_DONE */
if (zr->v4l_buffers.buffer[frame].state != BUZ_STATE_DONE)
dprintk(2,
KERN_ERR "%s: %s - internal state error\n",
ZR_DEVNAME(zr), __func__);
zr->v4l_buffers.buffer[frame].state = BUZ_STATE_USER;
fh->buffers.buffer[frame] = zr->v4l_buffers.buffer[frame];
spin_lock_irqsave(&zr->spinlock, flags);
/* Check if streaming capture has finished */
if (zr->v4l_pend_tail == zr->v4l_pend_head) {
zr36057_set_memgrab(zr, 0);
if (zr->v4l_buffers.active == ZORAN_ACTIVE) {
fh->buffers.active = zr->v4l_buffers.active = ZORAN_FREE;
zr->v4l_buffers.allocated = 0;
}
}
spin_unlock_irqrestore(&zr->spinlock, flags);
return 0;
}
/*
* Queue a MJPEG buffer for capture/playback
*/
static int zoran_jpg_queue_frame(struct zoran_fh *fh, int num,
enum zoran_codec_mode mode)
{
struct zoran *zr = fh->zr;
unsigned long flags;
int res = 0;
/* Check if buffers are allocated */
if (!fh->buffers.allocated) {
dprintk(1,
KERN_ERR
"%s: %s - buffers not yet allocated\n",
ZR_DEVNAME(zr), __func__);
return -ENOMEM;
}
/* No grabbing outside the buffer range! */
if (num >= fh->buffers.num_buffers || num < 0) {
dprintk(1,
KERN_ERR
"%s: %s - buffer %d out of range\n",
ZR_DEVNAME(zr), __func__, num);
return -EINVAL;
}
/* what is the codec mode right now? */
if (zr->codec_mode == BUZ_MODE_IDLE) {
zr->jpg_settings = fh->jpg_settings;
} else if (zr->codec_mode != mode) {
/* wrong codec mode active - invalid */
dprintk(1,
KERN_ERR
"%s: %s - codec in wrong mode\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
if (fh->buffers.active == ZORAN_FREE) {
if (zr->jpg_buffers.active == ZORAN_FREE) {
zr->jpg_buffers = fh->buffers;
fh->buffers.active = ZORAN_ACTIVE;
} else {
dprintk(1,
KERN_ERR
"%s: %s - another session is already capturing\n",
ZR_DEVNAME(zr), __func__);
res = -EBUSY;
}
}
if (!res && zr->codec_mode == BUZ_MODE_IDLE) {
/* Ok load up the jpeg codec */
zr36057_enable_jpg(zr, mode);
}
spin_lock_irqsave(&zr->spinlock, flags);
if (!res) {
switch (zr->jpg_buffers.buffer[num].state) {
case BUZ_STATE_DONE:
dprintk(2,
KERN_WARNING
"%s: %s - queing frame in BUZ_STATE_DONE state!?\n",
ZR_DEVNAME(zr), __func__);
/* fall through */
case BUZ_STATE_USER:
/* since there is at least one unused buffer there's room for at
*least one more pend[] entry */
zr->jpg_pend[zr->jpg_que_head++ & BUZ_MASK_FRAME] = num;
zr->jpg_buffers.buffer[num].state = BUZ_STATE_PEND;
fh->buffers.buffer[num] = zr->jpg_buffers.buffer[num];
zoran_feed_stat_com(zr);
break;
default:
case BUZ_STATE_DMA:
case BUZ_STATE_PEND:
if (zr->jpg_buffers.active == ZORAN_FREE) {
fh->buffers.active = ZORAN_FREE;
zr->jpg_buffers.allocated = 0;
}
res = -EBUSY; /* what are you doing? */
break;
}
}
spin_unlock_irqrestore(&zr->spinlock, flags);
if (!res && zr->jpg_buffers.active == ZORAN_FREE)
zr->jpg_buffers.active = fh->buffers.active;
return res;
}
static int jpg_qbuf(struct zoran_fh *fh, int frame, enum zoran_codec_mode mode)
{
struct zoran *zr = fh->zr;
int res = 0;
/* Does the user want to stop streaming? */
if (frame < 0) {
if (zr->codec_mode == mode) {
if (fh->buffers.active == ZORAN_FREE) {
dprintk(1,
KERN_ERR
"%s: %s(-1) - session not active\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
fh->buffers.active = zr->jpg_buffers.active = ZORAN_FREE;
zr->jpg_buffers.allocated = 0;
zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
return 0;
} else {
dprintk(1,
KERN_ERR
"%s: %s - stop streaming but not in streaming mode\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
}
if ((res = zoran_jpg_queue_frame(fh, frame, mode)))
return res;
/* Start the jpeg codec when the first frame is queued */
if (!res && zr->jpg_que_head == 1)
jpeg_start(zr);
return res;
}
/*
* Sync on a MJPEG buffer
*/
static int jpg_sync(struct zoran_fh *fh, struct zoran_sync *bs)
{
struct zoran *zr = fh->zr;
unsigned long flags;
int frame;
if (fh->buffers.active == ZORAN_FREE) {
dprintk(1,
KERN_ERR
"%s: %s - capture is not currently active\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
if (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS &&
zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) {
dprintk(1,
KERN_ERR
"%s: %s - codec not in streaming mode\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
mutex_unlock(&zr->lock);
if (!wait_event_interruptible_timeout(zr->jpg_capq,
(zr->jpg_que_tail != zr->jpg_dma_tail ||
zr->jpg_dma_tail == zr->jpg_dma_head),
10*HZ)) {
int isr;
btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
udelay(1);
zr->codec->control(zr->codec, CODEC_G_STATUS,
sizeof(isr), &isr);
mutex_lock(&zr->lock);
dprintk(1,
KERN_ERR
"%s: %s - timeout: codec isr=0x%02x\n",
ZR_DEVNAME(zr), __func__, isr);
return -ETIME;
}
mutex_lock(&zr->lock);
if (signal_pending(current))
return -ERESTARTSYS;
spin_lock_irqsave(&zr->spinlock, flags);
if (zr->jpg_dma_tail != zr->jpg_dma_head)
frame = zr->jpg_pend[zr->jpg_que_tail++ & BUZ_MASK_FRAME];
else
frame = zr->jpg_pend[zr->jpg_que_tail & BUZ_MASK_FRAME];
/* buffer should now be in BUZ_STATE_DONE */
if (zr->jpg_buffers.buffer[frame].state != BUZ_STATE_DONE)
dprintk(2,
KERN_ERR "%s: %s - internal state error\n",
ZR_DEVNAME(zr), __func__);
*bs = zr->jpg_buffers.buffer[frame].bs;
bs->frame = frame;
zr->jpg_buffers.buffer[frame].state = BUZ_STATE_USER;
fh->buffers.buffer[frame] = zr->jpg_buffers.buffer[frame];
spin_unlock_irqrestore(&zr->spinlock, flags);
return 0;
}
static void zoran_open_init_session(struct zoran_fh *fh)
{
int i;
struct zoran *zr = fh->zr;
/* Per default, map the V4L Buffers */
map_mode_raw(fh);
/* take over the card's current settings */
fh->overlay_settings = zr->overlay_settings;
fh->overlay_settings.is_set = 0;
fh->overlay_settings.format = zr->overlay_settings.format;
fh->overlay_active = ZORAN_FREE;
/* v4l settings */
fh->v4l_settings = zr->v4l_settings;
/* jpg settings */
fh->jpg_settings = zr->jpg_settings;
/* buffers */
memset(&fh->buffers, 0, sizeof(fh->buffers));
for (i = 0; i < MAX_FRAME; i++) {
fh->buffers.buffer[i].state = BUZ_STATE_USER; /* nothing going on */
fh->buffers.buffer[i].bs.frame = i;
}
fh->buffers.allocated = 0;
fh->buffers.active = ZORAN_FREE;
}
static void zoran_close_end_session(struct zoran_fh *fh)
{
struct zoran *zr = fh->zr;
/* overlay */
if (fh->overlay_active != ZORAN_FREE) {
fh->overlay_active = zr->overlay_active = ZORAN_FREE;
zr->v4l_overlay_active = 0;
if (!zr->v4l_memgrab_active)
zr36057_overlay(zr, 0);
zr->overlay_mask = NULL;
}
if (fh->map_mode == ZORAN_MAP_MODE_RAW) {
/* v4l capture */
if (fh->buffers.active != ZORAN_FREE) {
unsigned long flags;
spin_lock_irqsave(&zr->spinlock, flags);
zr36057_set_memgrab(zr, 0);
zr->v4l_buffers.allocated = 0;
zr->v4l_buffers.active = fh->buffers.active = ZORAN_FREE;
spin_unlock_irqrestore(&zr->spinlock, flags);
}
/* v4l buffers */
if (fh->buffers.allocated)
v4l_fbuffer_free(fh);
} else {
/* jpg capture */
if (fh->buffers.active != ZORAN_FREE) {
zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
zr->jpg_buffers.allocated = 0;
zr->jpg_buffers.active = fh->buffers.active = ZORAN_FREE;
}
/* jpg buffers */
if (fh->buffers.allocated)
jpg_fbuffer_free(fh);
}
}
/*
* Open a zoran card. Right now the flags stuff is just playing
*/
static int zoran_open(struct file *file)
{
struct zoran *zr = video_drvdata(file);
struct zoran_fh *fh;
int res, first_open = 0;
dprintk(2, KERN_INFO "%s: %s(%s, pid=[%d]), users(-)=%d\n",
ZR_DEVNAME(zr), __func__, current->comm, task_pid_nr(current), zr->user + 1);
mutex_lock(&zr->lock);
if (zr->user >= 2048) {
dprintk(1, KERN_ERR "%s: too many users (%d) on device\n",
ZR_DEVNAME(zr), zr->user);
res = -EBUSY;
goto fail_unlock;
}
/* now, create the open()-specific file_ops struct */
fh = kzalloc(sizeof(struct zoran_fh), GFP_KERNEL);
if (!fh) {
dprintk(1,
KERN_ERR
"%s: %s - allocation of zoran_fh failed\n",
ZR_DEVNAME(zr), __func__);
res = -ENOMEM;
goto fail_unlock;
}
v4l2_fh_init(&fh->fh, video_devdata(file));
/* used to be BUZ_MAX_WIDTH/HEIGHT, but that gives overflows
* on norm-change! */
fh->overlay_mask =
kmalloc(((768 + 31) / 32) * 576 * 4, GFP_KERNEL);
if (!fh->overlay_mask) {
dprintk(1,
KERN_ERR
"%s: %s - allocation of overlay_mask failed\n",
ZR_DEVNAME(zr), __func__);
res = -ENOMEM;
goto fail_fh;
}
if (zr->user++ == 0)
first_open = 1;
/* default setup - TODO: look at flags */
if (first_open) { /* First device open */
zr36057_restart(zr);
zoran_open_init_params(zr);
zoran_init_hardware(zr);
btor(ZR36057_ICR_IntPinEn, ZR36057_ICR);
}
/* set file_ops stuff */
file->private_data = fh;
fh->zr = zr;
zoran_open_init_session(fh);
v4l2_fh_add(&fh->fh);
mutex_unlock(&zr->lock);
return 0;
fail_fh:
v4l2_fh_exit(&fh->fh);
kfree(fh);
fail_unlock:
mutex_unlock(&zr->lock);
dprintk(2, KERN_INFO "%s: open failed (%d), users(-)=%d\n",
ZR_DEVNAME(zr), res, zr->user);
return res;
}
static int
zoran_close(struct file *file)
{
struct zoran_fh *fh = file->private_data;
struct zoran *zr = fh->zr;
dprintk(2, KERN_INFO "%s: %s(%s, pid=[%d]), users(+)=%d\n",
ZR_DEVNAME(zr), __func__, current->comm, task_pid_nr(current), zr->user - 1);
/* kernel locks (fs/device.c), so don't do that ourselves
* (prevents deadlocks) */
mutex_lock(&zr->lock);
zoran_close_end_session(fh);
if (zr->user-- == 1) { /* Last process */
/* Clean up JPEG process */
wake_up_interruptible(&zr->jpg_capq);
zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
zr->jpg_buffers.allocated = 0;
zr->jpg_buffers.active = ZORAN_FREE;
/* disable interrupts */
btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
if (zr36067_debug > 1)
print_interrupts(zr);
/* Overlay off */
zr->v4l_overlay_active = 0;
zr36057_overlay(zr, 0);
zr->overlay_mask = NULL;
/* capture off */
wake_up_interruptible(&zr->v4l_capq);
zr36057_set_memgrab(zr, 0);
zr->v4l_buffers.allocated = 0;
zr->v4l_buffers.active = ZORAN_FREE;
zoran_set_pci_master(zr, 0);
if (!pass_through) { /* Switch to color bar */
decoder_call(zr, video, s_stream, 0);
encoder_call(zr, video, s_routing, 2, 0, 0);
}
}
mutex_unlock(&zr->lock);
v4l2_fh_del(&fh->fh);
v4l2_fh_exit(&fh->fh);
kfree(fh->overlay_mask);
kfree(fh);
dprintk(4, KERN_INFO "%s: %s done\n", ZR_DEVNAME(zr), __func__);
return 0;
}
static int setup_fbuffer(struct zoran_fh *fh,
void *base,
const struct zoran_format *fmt,
int width,
int height,
int bytesperline)
{
struct zoran *zr = fh->zr;
/* (Ronald) v4l/v4l2 guidelines */
if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
return -EPERM;
/* Don't allow frame buffer overlay if PCI or AGP is buggy, or on
ALi Magik (that needs very low latency while the card needs a
higher value always) */
if (pci_pci_problems & (PCIPCI_FAIL | PCIAGP_FAIL | PCIPCI_ALIMAGIK))
return -ENXIO;
/* we need a bytesperline value, even if not given */
if (!bytesperline)
bytesperline = width * ((fmt->depth + 7) & ~7) / 8;
#if 0
if (zr->overlay_active) {
/* dzjee... stupid users... don't even bother to turn off
* overlay before changing the memory location...
* normally, we would return errors here. However, one of
* the tools that does this is... xawtv! and since xawtv
* is used by +/- 99% of the users, we'd rather be user-
* friendly and silently do as if nothing went wrong */
dprintk(3,
KERN_ERR
"%s: %s - forced overlay turnoff because framebuffer changed\n",
ZR_DEVNAME(zr), __func__);
zr36057_overlay(zr, 0);
}
#endif
if (!(fmt->flags & ZORAN_FORMAT_OVERLAY)) {
dprintk(1,
KERN_ERR
"%s: %s - no valid overlay format given\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
if (height <= 0 || width <= 0 || bytesperline <= 0) {
dprintk(1,
KERN_ERR
"%s: %s - invalid height/width/bpl value (%d|%d|%d)\n",
ZR_DEVNAME(zr), __func__, width, height, bytesperline);
return -EINVAL;
}
if (bytesperline & 3) {
dprintk(1,
KERN_ERR
"%s: %s - bytesperline (%d) must be 4-byte aligned\n",
ZR_DEVNAME(zr), __func__, bytesperline);
return -EINVAL;
}
zr->vbuf_base = (void *) ((unsigned long) base & ~3);
zr->vbuf_height = height;
zr->vbuf_width = width;
zr->vbuf_depth = fmt->depth;
zr->overlay_settings.format = fmt;
zr->vbuf_bytesperline = bytesperline;
/* The user should set new window parameters */
zr->overlay_settings.is_set = 0;
return 0;
}
static int setup_window(struct zoran_fh *fh,
int x,
int y,
int width,
int height,
struct v4l2_clip __user *clips,
unsigned int clipcount,
void __user *bitmap)
{
struct zoran *zr = fh->zr;
struct v4l2_clip *vcp = NULL;
int on, end;
if (!zr->vbuf_base) {
dprintk(1,
KERN_ERR
"%s: %s - frame buffer has to be set first\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
if (!fh->overlay_settings.format) {
dprintk(1,
KERN_ERR
"%s: %s - no overlay format set\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
if (clipcount > 2048) {
dprintk(1,
KERN_ERR
"%s: %s - invalid clipcount\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
/*
* The video front end needs 4-byte alinged line sizes, we correct that
* silently here if necessary
*/
if (zr->vbuf_depth == 15 || zr->vbuf_depth == 16) {
end = (x + width) & ~1; /* round down */
x = (x + 1) & ~1; /* round up */
width = end - x;
}
if (zr->vbuf_depth == 24) {
end = (x + width) & ~3; /* round down */
x = (x + 3) & ~3; /* round up */
width = end - x;
}
if (width > BUZ_MAX_WIDTH)
width = BUZ_MAX_WIDTH;
if (height > BUZ_MAX_HEIGHT)
height = BUZ_MAX_HEIGHT;
/* Check for invalid parameters */
if (width < BUZ_MIN_WIDTH || height < BUZ_MIN_HEIGHT ||
width > BUZ_MAX_WIDTH || height > BUZ_MAX_HEIGHT) {
dprintk(1,
KERN_ERR
"%s: %s - width = %d or height = %d invalid\n",
ZR_DEVNAME(zr), __func__, width, height);
return -EINVAL;
}
fh->overlay_settings.x = x;
fh->overlay_settings.y = y;
fh->overlay_settings.width = width;
fh->overlay_settings.height = height;
fh->overlay_settings.clipcount = clipcount;
/*
* If an overlay is running, we have to switch it off
* and switch it on again in order to get the new settings in effect.
*
* We also want to avoid that the overlay mask is written
* when an overlay is running.
*/
on = zr->v4l_overlay_active && !zr->v4l_memgrab_active &&
zr->overlay_active != ZORAN_FREE &&
fh->overlay_active != ZORAN_FREE;
if (on)
zr36057_overlay(zr, 0);
/*
* Write the overlay mask if clips are wanted.
* We prefer a bitmap.
*/
if (bitmap) {
/* fake value - it just means we want clips */
fh->overlay_settings.clipcount = 1;
if (copy_from_user(fh->overlay_mask, bitmap,
(width * height + 7) / 8)) {
return -EFAULT;
}
} else if (clipcount) {
/* write our own bitmap from the clips */
vcp = vmalloc(sizeof(struct v4l2_clip) * (clipcount + 4));
if (vcp == NULL) {
dprintk(1,
KERN_ERR
"%s: %s - Alloc of clip mask failed\n",
ZR_DEVNAME(zr), __func__);
return -ENOMEM;
}
if (copy_from_user
(vcp, clips, sizeof(struct v4l2_clip) * clipcount)) {
vfree(vcp);
return -EFAULT;
}
write_overlay_mask(fh, vcp, clipcount);
vfree(vcp);
}
fh->overlay_settings.is_set = 1;
if (fh->overlay_active != ZORAN_FREE &&
zr->overlay_active != ZORAN_FREE)
zr->overlay_settings = fh->overlay_settings;
if (on)
zr36057_overlay(zr, 1);
/* Make sure the changes come into effect */
return wait_grab_pending(zr);
}
static int setup_overlay(struct zoran_fh *fh, int on)
{
struct zoran *zr = fh->zr;
/* If there is nothing to do, return immediately */
if ((on && fh->overlay_active != ZORAN_FREE) ||
(!on && fh->overlay_active == ZORAN_FREE))
return 0;
/* check whether we're touching someone else's overlay */
if (on && zr->overlay_active != ZORAN_FREE &&
fh->overlay_active == ZORAN_FREE) {
dprintk(1,
KERN_ERR
"%s: %s - overlay is already active for another session\n",
ZR_DEVNAME(zr), __func__);
return -EBUSY;
}
if (!on && zr->overlay_active != ZORAN_FREE &&
fh->overlay_active == ZORAN_FREE) {
dprintk(1,
KERN_ERR
"%s: %s - you cannot cancel someone else's session\n",
ZR_DEVNAME(zr), __func__);
return -EPERM;
}
if (on == 0) {
zr->overlay_active = fh->overlay_active = ZORAN_FREE;
zr->v4l_overlay_active = 0;
/* When a grab is running, the video simply
* won't be switched on any more */
if (!zr->v4l_memgrab_active)
zr36057_overlay(zr, 0);
zr->overlay_mask = NULL;
} else {
if (!zr->vbuf_base || !fh->overlay_settings.is_set) {
dprintk(1,
KERN_ERR
"%s: %s - buffer or window not set\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
if (!fh->overlay_settings.format) {
dprintk(1,
KERN_ERR
"%s: %s - no overlay format set\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
zr->overlay_active = fh->overlay_active = ZORAN_LOCKED;
zr->v4l_overlay_active = 1;
zr->overlay_mask = fh->overlay_mask;
zr->overlay_settings = fh->overlay_settings;
if (!zr->v4l_memgrab_active)
zr36057_overlay(zr, 1);
/* When a grab is running, the video will be
* switched on when grab is finished */
}
/* Make sure the changes come into effect */
return wait_grab_pending(zr);
}
/* get the status of a buffer in the clients buffer queue */
static int zoran_v4l2_buffer_status(struct zoran_fh *fh,
struct v4l2_buffer *buf, int num)
{
struct zoran *zr = fh->zr;
unsigned long flags;
buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
switch (fh->map_mode) {
case ZORAN_MAP_MODE_RAW:
/* check range */
if (num < 0 || num >= fh->buffers.num_buffers ||
!fh->buffers.allocated) {
dprintk(1,
KERN_ERR
"%s: %s - wrong number or buffers not allocated\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
spin_lock_irqsave(&zr->spinlock, flags);
dprintk(3,
KERN_DEBUG
"%s: %s() - raw active=%c, buffer %d: state=%c, map=%c\n",
ZR_DEVNAME(zr), __func__,
"FAL"[fh->buffers.active], num,
"UPMD"[zr->v4l_buffers.buffer[num].state],
fh->buffers.buffer[num].map ? 'Y' : 'N');
spin_unlock_irqrestore(&zr->spinlock, flags);
buf->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf->length = fh->buffers.buffer_size;
/* get buffer */
buf->bytesused = fh->buffers.buffer[num].bs.length;
if (fh->buffers.buffer[num].state == BUZ_STATE_DONE ||
fh->buffers.buffer[num].state == BUZ_STATE_USER) {
buf->sequence = fh->buffers.buffer[num].bs.seq;
buf->flags |= V4L2_BUF_FLAG_DONE;
buf->timestamp = fh->buffers.buffer[num].bs.timestamp;
} else {
buf->flags |= V4L2_BUF_FLAG_QUEUED;
}
if (fh->v4l_settings.height <= BUZ_MAX_HEIGHT / 2)
buf->field = V4L2_FIELD_TOP;
else
buf->field = V4L2_FIELD_INTERLACED;
break;
case ZORAN_MAP_MODE_JPG_REC:
case ZORAN_MAP_MODE_JPG_PLAY:
/* check range */
if (num < 0 || num >= fh->buffers.num_buffers ||
!fh->buffers.allocated) {
dprintk(1,
KERN_ERR
"%s: %s - wrong number or buffers not allocated\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
buf->type = (fh->map_mode == ZORAN_MAP_MODE_JPG_REC) ?
V4L2_BUF_TYPE_VIDEO_CAPTURE :
V4L2_BUF_TYPE_VIDEO_OUTPUT;
buf->length = fh->buffers.buffer_size;
/* these variables are only written after frame has been captured */
if (fh->buffers.buffer[num].state == BUZ_STATE_DONE ||
fh->buffers.buffer[num].state == BUZ_STATE_USER) {
buf->sequence = fh->buffers.buffer[num].bs.seq;
buf->timestamp = fh->buffers.buffer[num].bs.timestamp;
buf->bytesused = fh->buffers.buffer[num].bs.length;
buf->flags |= V4L2_BUF_FLAG_DONE;
} else {
buf->flags |= V4L2_BUF_FLAG_QUEUED;
}
/* which fields are these? */
if (fh->jpg_settings.TmpDcm != 1)
buf->field = fh->jpg_settings.odd_even ?
V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM;
else
buf->field = fh->jpg_settings.odd_even ?
V4L2_FIELD_SEQ_TB : V4L2_FIELD_SEQ_BT;
break;
default:
dprintk(5,
KERN_ERR
"%s: %s - invalid buffer type|map_mode (%d|%d)\n",
ZR_DEVNAME(zr), __func__, buf->type, fh->map_mode);
return -EINVAL;
}
buf->memory = V4L2_MEMORY_MMAP;
buf->index = num;
buf->m.offset = buf->length * num;
return 0;
}
static int
zoran_set_norm (struct zoran *zr,
v4l2_std_id norm)
{
int on;
if (zr->v4l_buffers.active != ZORAN_FREE ||
zr->jpg_buffers.active != ZORAN_FREE) {
dprintk(1,
KERN_WARNING
"%s: %s called while in playback/capture mode\n",
ZR_DEVNAME(zr), __func__);
return -EBUSY;
}
if (!(norm & zr->card.norms)) {
dprintk(1,
KERN_ERR "%s: %s - unsupported norm %llx\n",
ZR_DEVNAME(zr), __func__, norm);
return -EINVAL;
}
if (norm & V4L2_STD_SECAM)
zr->timing = zr->card.tvn[2];
else if (norm & V4L2_STD_NTSC)
zr->timing = zr->card.tvn[1];
else
zr->timing = zr->card.tvn[0];
/* We switch overlay off and on since a change in the
* norm needs different VFE settings */
on = zr->overlay_active && !zr->v4l_memgrab_active;
if (on)
zr36057_overlay(zr, 0);
decoder_call(zr, video, s_std, norm);
encoder_call(zr, video, s_std_output, norm);
if (on)
zr36057_overlay(zr, 1);
/* Make sure the changes come into effect */
zr->norm = norm;
return 0;
}
static int
zoran_set_input (struct zoran *zr,
int input)
{
if (input == zr->input) {
return 0;
}
if (zr->v4l_buffers.active != ZORAN_FREE ||
zr->jpg_buffers.active != ZORAN_FREE) {
dprintk(1,
KERN_WARNING
"%s: %s called while in playback/capture mode\n",
ZR_DEVNAME(zr), __func__);
return -EBUSY;
}
if (input < 0 || input >= zr->card.inputs) {
dprintk(1,
KERN_ERR
"%s: %s - unsupported input %d\n",
ZR_DEVNAME(zr), __func__, input);
return -EINVAL;
}
zr->input = input;
decoder_call(zr, video, s_routing,
zr->card.input[input].muxsel, 0, 0);
return 0;
}
/*
* ioctl routine
*/
static int zoran_querycap(struct file *file, void *__fh, struct v4l2_capability *cap)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
strncpy(cap->card, ZR_DEVNAME(zr), sizeof(cap->card)-1);
strncpy(cap->driver, "zoran", sizeof(cap->driver)-1);
snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
pci_name(zr->pci_dev));
cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_VIDEO_OVERLAY;
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
return 0;
}
static int zoran_enum_fmt(struct zoran *zr, struct v4l2_fmtdesc *fmt, int flag)
{
unsigned int num, i;
for (num = i = 0; i < NUM_FORMATS; i++) {
if (zoran_formats[i].flags & flag && num++ == fmt->index) {
strncpy(fmt->description, zoran_formats[i].name,
sizeof(fmt->description) - 1);
/* fmt struct pre-zeroed, so adding '\0' not needed */
fmt->pixelformat = zoran_formats[i].fourcc;
if (zoran_formats[i].flags & ZORAN_FORMAT_COMPRESSED)
fmt->flags |= V4L2_FMT_FLAG_COMPRESSED;
return 0;
}
}
return -EINVAL;
}
static int zoran_enum_fmt_vid_cap(struct file *file, void *__fh,
struct v4l2_fmtdesc *f)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
return zoran_enum_fmt(zr, f, ZORAN_FORMAT_CAPTURE);
}
static int zoran_enum_fmt_vid_out(struct file *file, void *__fh,
struct v4l2_fmtdesc *f)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
return zoran_enum_fmt(zr, f, ZORAN_FORMAT_PLAYBACK);
}
static int zoran_enum_fmt_vid_overlay(struct file *file, void *__fh,
struct v4l2_fmtdesc *f)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
return zoran_enum_fmt(zr, f, ZORAN_FORMAT_OVERLAY);
}
static int zoran_g_fmt_vid_out(struct file *file, void *__fh,
struct v4l2_format *fmt)
{
struct zoran_fh *fh = __fh;
fmt->fmt.pix.width = fh->jpg_settings.img_width / fh->jpg_settings.HorDcm;
fmt->fmt.pix.height = fh->jpg_settings.img_height * 2 /
(fh->jpg_settings.VerDcm * fh->jpg_settings.TmpDcm);
fmt->fmt.pix.sizeimage = zoran_v4l2_calc_bufsize(&fh->jpg_settings);
fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_MJPEG;
if (fh->jpg_settings.TmpDcm == 1)
fmt->fmt.pix.field = (fh->jpg_settings.odd_even ?
V4L2_FIELD_SEQ_TB : V4L2_FIELD_SEQ_BT);
else
fmt->fmt.pix.field = (fh->jpg_settings.odd_even ?
V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM);
fmt->fmt.pix.bytesperline = 0;
fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
return 0;
}
static int zoran_g_fmt_vid_cap(struct file *file, void *__fh,
struct v4l2_format *fmt)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
if (fh->map_mode != ZORAN_MAP_MODE_RAW)
return zoran_g_fmt_vid_out(file, fh, fmt);
fmt->fmt.pix.width = fh->v4l_settings.width;
fmt->fmt.pix.height = fh->v4l_settings.height;
fmt->fmt.pix.sizeimage = fh->v4l_settings.bytesperline *
fh->v4l_settings.height;
fmt->fmt.pix.pixelformat = fh->v4l_settings.format->fourcc;
fmt->fmt.pix.colorspace = fh->v4l_settings.format->colorspace;
fmt->fmt.pix.bytesperline = fh->v4l_settings.bytesperline;
if (BUZ_MAX_HEIGHT < (fh->v4l_settings.height * 2))
fmt->fmt.pix.field = V4L2_FIELD_INTERLACED;
else
fmt->fmt.pix.field = V4L2_FIELD_TOP;
return 0;
}
static int zoran_g_fmt_vid_overlay(struct file *file, void *__fh,
struct v4l2_format *fmt)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
fmt->fmt.win.w.left = fh->overlay_settings.x;
fmt->fmt.win.w.top = fh->overlay_settings.y;
fmt->fmt.win.w.width = fh->overlay_settings.width;
fmt->fmt.win.w.height = fh->overlay_settings.height;
if (fh->overlay_settings.width * 2 > BUZ_MAX_HEIGHT)
fmt->fmt.win.field = V4L2_FIELD_INTERLACED;
else
fmt->fmt.win.field = V4L2_FIELD_TOP;
return 0;
}
static int zoran_try_fmt_vid_overlay(struct file *file, void *__fh,
struct v4l2_format *fmt)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
if (fmt->fmt.win.w.width > BUZ_MAX_WIDTH)
fmt->fmt.win.w.width = BUZ_MAX_WIDTH;
if (fmt->fmt.win.w.width < BUZ_MIN_WIDTH)
fmt->fmt.win.w.width = BUZ_MIN_WIDTH;
if (fmt->fmt.win.w.height > BUZ_MAX_HEIGHT)
fmt->fmt.win.w.height = BUZ_MAX_HEIGHT;
if (fmt->fmt.win.w.height < BUZ_MIN_HEIGHT)
fmt->fmt.win.w.height = BUZ_MIN_HEIGHT;
return 0;
}
static int zoran_try_fmt_vid_out(struct file *file, void *__fh,
struct v4l2_format *fmt)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
struct zoran_jpg_settings settings;
int res = 0;
if (fmt->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG)
return -EINVAL;
settings = fh->jpg_settings;
/* we actually need to set 'real' parameters now */
if ((fmt->fmt.pix.height * 2) > BUZ_MAX_HEIGHT)
settings.TmpDcm = 1;
else
settings.TmpDcm = 2;
settings.decimation = 0;
if (fmt->fmt.pix.height <= fh->jpg_settings.img_height / 2)
settings.VerDcm = 2;
else
settings.VerDcm = 1;
if (fmt->fmt.pix.width <= fh->jpg_settings.img_width / 4)
settings.HorDcm = 4;
else if (fmt->fmt.pix.width <= fh->jpg_settings.img_width / 2)
settings.HorDcm = 2;
else
settings.HorDcm = 1;
if (settings.TmpDcm == 1)
settings.field_per_buff = 2;
else
settings.field_per_buff = 1;
if (settings.HorDcm > 1) {
settings.img_x = (BUZ_MAX_WIDTH == 720) ? 8 : 0;
settings.img_width = (BUZ_MAX_WIDTH == 720) ? 704 : BUZ_MAX_WIDTH;
} else {
settings.img_x = 0;
settings.img_width = BUZ_MAX_WIDTH;
}
/* check */
res = zoran_check_jpg_settings(zr, &settings, 1);
if (res)
return res;
/* tell the user what we actually did */
fmt->fmt.pix.width = settings.img_width / settings.HorDcm;
fmt->fmt.pix.height = settings.img_height * 2 /
(settings.TmpDcm * settings.VerDcm);
if (settings.TmpDcm == 1)
fmt->fmt.pix.field = (fh->jpg_settings.odd_even ?
V4L2_FIELD_SEQ_TB : V4L2_FIELD_SEQ_BT);
else
fmt->fmt.pix.field = (fh->jpg_settings.odd_even ?
V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM);
fmt->fmt.pix.sizeimage = zoran_v4l2_calc_bufsize(&settings);
fmt->fmt.pix.bytesperline = 0;
fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
return res;
}
static int zoran_try_fmt_vid_cap(struct file *file, void *__fh,
struct v4l2_format *fmt)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int bpp;
int i;
if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG)
return zoran_try_fmt_vid_out(file, fh, fmt);
for (i = 0; i < NUM_FORMATS; i++)
if (zoran_formats[i].fourcc == fmt->fmt.pix.pixelformat)
break;
if (i == NUM_FORMATS)
return -EINVAL;
bpp = DIV_ROUND_UP(zoran_formats[i].depth, 8);
v4l_bound_align_image(
&fmt->fmt.pix.width, BUZ_MIN_WIDTH, BUZ_MAX_WIDTH, bpp == 2 ? 1 : 2,
&fmt->fmt.pix.height, BUZ_MIN_HEIGHT, BUZ_MAX_HEIGHT, 0, 0);
return 0;
}
static int zoran_s_fmt_vid_overlay(struct file *file, void *__fh,
struct v4l2_format *fmt)
{
struct zoran_fh *fh = __fh;
int res;
dprintk(3, "x=%d, y=%d, w=%d, h=%d, cnt=%d, map=0x%p\n",
fmt->fmt.win.w.left, fmt->fmt.win.w.top,
fmt->fmt.win.w.width,
fmt->fmt.win.w.height,
fmt->fmt.win.clipcount,
fmt->fmt.win.bitmap);
res = setup_window(fh, fmt->fmt.win.w.left, fmt->fmt.win.w.top,
fmt->fmt.win.w.width, fmt->fmt.win.w.height,
(struct v4l2_clip __user *)fmt->fmt.win.clips,
fmt->fmt.win.clipcount, fmt->fmt.win.bitmap);
return res;
}
static int zoran_s_fmt_vid_out(struct file *file, void *__fh,
struct v4l2_format *fmt)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
__le32 printformat = __cpu_to_le32(fmt->fmt.pix.pixelformat);
struct zoran_jpg_settings settings;
int res = 0;
dprintk(3, "size=%dx%d, fmt=0x%x (%4.4s)\n",
fmt->fmt.pix.width, fmt->fmt.pix.height,
fmt->fmt.pix.pixelformat,
(char *) &printformat);
if (fmt->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG)
return -EINVAL;
if (fh->buffers.allocated) {
dprintk(1, KERN_ERR "%s: VIDIOC_S_FMT - cannot change capture mode\n",
ZR_DEVNAME(zr));
res = -EBUSY;
return res;
}
settings = fh->jpg_settings;
/* we actually need to set 'real' parameters now */
if (fmt->fmt.pix.height * 2 > BUZ_MAX_HEIGHT)
settings.TmpDcm = 1;
else
settings.TmpDcm = 2;
settings.decimation = 0;
if (fmt->fmt.pix.height <= fh->jpg_settings.img_height / 2)
settings.VerDcm = 2;
else
settings.VerDcm = 1;
if (fmt->fmt.pix.width <= fh->jpg_settings.img_width / 4)
settings.HorDcm = 4;
else if (fmt->fmt.pix.width <= fh->jpg_settings.img_width / 2)
settings.HorDcm = 2;
else
settings.HorDcm = 1;
if (settings.TmpDcm == 1)
settings.field_per_buff = 2;
else
settings.field_per_buff = 1;
if (settings.HorDcm > 1) {
settings.img_x = (BUZ_MAX_WIDTH == 720) ? 8 : 0;
settings.img_width = (BUZ_MAX_WIDTH == 720) ? 704 : BUZ_MAX_WIDTH;
} else {
settings.img_x = 0;
settings.img_width = BUZ_MAX_WIDTH;
}
/* check */
res = zoran_check_jpg_settings(zr, &settings, 0);
if (res)
return res;
/* it's ok, so set them */
fh->jpg_settings = settings;
map_mode_jpg(fh, fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT);
fh->buffers.buffer_size = zoran_v4l2_calc_bufsize(&fh->jpg_settings);
/* tell the user what we actually did */
fmt->fmt.pix.width = settings.img_width / settings.HorDcm;
fmt->fmt.pix.height = settings.img_height * 2 /
(settings.TmpDcm * settings.VerDcm);
if (settings.TmpDcm == 1)
fmt->fmt.pix.field = (fh->jpg_settings.odd_even ?
V4L2_FIELD_SEQ_TB : V4L2_FIELD_SEQ_BT);
else
fmt->fmt.pix.field = (fh->jpg_settings.odd_even ?
V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM);
fmt->fmt.pix.bytesperline = 0;
fmt->fmt.pix.sizeimage = fh->buffers.buffer_size;
fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
return res;
}
static int zoran_s_fmt_vid_cap(struct file *file, void *__fh,
struct v4l2_format *fmt)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int i;
int res = 0;
if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG)
return zoran_s_fmt_vid_out(file, fh, fmt);
for (i = 0; i < NUM_FORMATS; i++)
if (fmt->fmt.pix.pixelformat == zoran_formats[i].fourcc)
break;
if (i == NUM_FORMATS) {
dprintk(1, KERN_ERR "%s: VIDIOC_S_FMT - unknown/unsupported format 0x%x\n",
ZR_DEVNAME(zr), fmt->fmt.pix.pixelformat);
return -EINVAL;
}
if ((fh->map_mode != ZORAN_MAP_MODE_RAW && fh->buffers.allocated) ||
fh->buffers.active != ZORAN_FREE) {
dprintk(1, KERN_ERR "%s: VIDIOC_S_FMT - cannot change capture mode\n",
ZR_DEVNAME(zr));
res = -EBUSY;
return res;
}
if (fmt->fmt.pix.height > BUZ_MAX_HEIGHT)
fmt->fmt.pix.height = BUZ_MAX_HEIGHT;
if (fmt->fmt.pix.width > BUZ_MAX_WIDTH)
fmt->fmt.pix.width = BUZ_MAX_WIDTH;
map_mode_raw(fh);
res = zoran_v4l_set_format(fh, fmt->fmt.pix.width, fmt->fmt.pix.height,
&zoran_formats[i]);
if (res)
return res;
/* tell the user the results/missing stuff */
fmt->fmt.pix.bytesperline = fh->v4l_settings.bytesperline;
fmt->fmt.pix.sizeimage = fh->v4l_settings.height * fh->v4l_settings.bytesperline;
fmt->fmt.pix.colorspace = fh->v4l_settings.format->colorspace;
if (BUZ_MAX_HEIGHT < (fh->v4l_settings.height * 2))
fmt->fmt.pix.field = V4L2_FIELD_INTERLACED;
else
fmt->fmt.pix.field = V4L2_FIELD_TOP;
return res;
}
static int zoran_g_fbuf(struct file *file, void *__fh,
struct v4l2_framebuffer *fb)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
memset(fb, 0, sizeof(*fb));
fb->base = zr->vbuf_base;
fb->fmt.width = zr->vbuf_width;
fb->fmt.height = zr->vbuf_height;
if (zr->overlay_settings.format)
fb->fmt.pixelformat = fh->overlay_settings.format->fourcc;
fb->fmt.bytesperline = zr->vbuf_bytesperline;
fb->fmt.colorspace = V4L2_COLORSPACE_SRGB;
fb->fmt.field = V4L2_FIELD_INTERLACED;
fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
return 0;
}
static int zoran_s_fbuf(struct file *file, void *__fh,
const struct v4l2_framebuffer *fb)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int i, res = 0;
__le32 printformat = __cpu_to_le32(fb->fmt.pixelformat);
for (i = 0; i < NUM_FORMATS; i++)
if (zoran_formats[i].fourcc == fb->fmt.pixelformat)
break;
if (i == NUM_FORMATS) {
dprintk(1, KERN_ERR "%s: VIDIOC_S_FBUF - format=0x%x (%4.4s) not allowed\n",
ZR_DEVNAME(zr), fb->fmt.pixelformat,
(char *)&printformat);
return -EINVAL;
}
res = setup_fbuffer(fh, fb->base, &zoran_formats[i], fb->fmt.width,
fb->fmt.height, fb->fmt.bytesperline);
return res;
}
static int zoran_overlay(struct file *file, void *__fh, unsigned int on)
{
struct zoran_fh *fh = __fh;
int res;
res = setup_overlay(fh, on);
return res;
}
static int zoran_streamoff(struct file *file, void *__fh, enum v4l2_buf_type type);
static int zoran_reqbufs(struct file *file, void *__fh, struct v4l2_requestbuffers *req)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int res = 0;
if (req->memory != V4L2_MEMORY_MMAP) {
dprintk(2,
KERN_ERR
"%s: only MEMORY_MMAP capture is supported, not %d\n",
ZR_DEVNAME(zr), req->memory);
return -EINVAL;
}
if (req->count == 0)
return zoran_streamoff(file, fh, req->type);
if (fh->buffers.allocated) {
dprintk(2,
KERN_ERR
"%s: VIDIOC_REQBUFS - buffers already allocated\n",
ZR_DEVNAME(zr));
res = -EBUSY;
return res;
}
if (fh->map_mode == ZORAN_MAP_MODE_RAW &&
req->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
/* control user input */
if (req->count < 2)
req->count = 2;
if (req->count > v4l_nbufs)
req->count = v4l_nbufs;
/* The next mmap will map the V4L buffers */
map_mode_raw(fh);
fh->buffers.num_buffers = req->count;
if (v4l_fbuffer_alloc(fh)) {
res = -ENOMEM;
return res;
}
} else if (fh->map_mode == ZORAN_MAP_MODE_JPG_REC ||
fh->map_mode == ZORAN_MAP_MODE_JPG_PLAY) {
/* we need to calculate size ourselves now */
if (req->count < 4)
req->count = 4;
if (req->count > jpg_nbufs)
req->count = jpg_nbufs;
/* The next mmap will map the MJPEG buffers */
map_mode_jpg(fh, req->type == V4L2_BUF_TYPE_VIDEO_OUTPUT);
fh->buffers.num_buffers = req->count;
fh->buffers.buffer_size = zoran_v4l2_calc_bufsize(&fh->jpg_settings);
if (jpg_fbuffer_alloc(fh)) {
res = -ENOMEM;
return res;
}
} else {
dprintk(1,
KERN_ERR
"%s: VIDIOC_REQBUFS - unknown type %d\n",
ZR_DEVNAME(zr), req->type);
res = -EINVAL;
return res;
}
return res;
}
static int zoran_querybuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
{
struct zoran_fh *fh = __fh;
int res;
res = zoran_v4l2_buffer_status(fh, buf, buf->index);
return res;
}
static int zoran_qbuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int res = 0, codec_mode, buf_type;
switch (fh->map_mode) {
case ZORAN_MAP_MODE_RAW:
if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
dprintk(1, KERN_ERR
"%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
ZR_DEVNAME(zr), buf->type, fh->map_mode);
res = -EINVAL;
return res;
}
res = zoran_v4l_queue_frame(fh, buf->index);
if (res)
return res;
if (!zr->v4l_memgrab_active && fh->buffers.active == ZORAN_LOCKED)
zr36057_set_memgrab(zr, 1);
break;
case ZORAN_MAP_MODE_JPG_REC:
case ZORAN_MAP_MODE_JPG_PLAY:
if (fh->map_mode == ZORAN_MAP_MODE_JPG_PLAY) {
buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
codec_mode = BUZ_MODE_MOTION_DECOMPRESS;
} else {
buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
codec_mode = BUZ_MODE_MOTION_COMPRESS;
}
if (buf->type != buf_type) {
dprintk(1, KERN_ERR
"%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
ZR_DEVNAME(zr), buf->type, fh->map_mode);
res = -EINVAL;
return res;
}
res = zoran_jpg_queue_frame(fh, buf->index, codec_mode);
if (res != 0)
return res;
if (zr->codec_mode == BUZ_MODE_IDLE &&
fh->buffers.active == ZORAN_LOCKED)
zr36057_enable_jpg(zr, codec_mode);
break;
default:
dprintk(1, KERN_ERR
"%s: VIDIOC_QBUF - unsupported type %d\n",
ZR_DEVNAME(zr), buf->type);
res = -EINVAL;
break;
}
return res;
}
static int zoran_dqbuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int res = 0, buf_type, num = -1; /* compiler borks here (?) */
switch (fh->map_mode) {
case ZORAN_MAP_MODE_RAW:
if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
dprintk(1, KERN_ERR
"%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
ZR_DEVNAME(zr), buf->type, fh->map_mode);
res = -EINVAL;
return res;
}
num = zr->v4l_pend[zr->v4l_sync_tail & V4L_MASK_FRAME];
if (file->f_flags & O_NONBLOCK &&
zr->v4l_buffers.buffer[num].state != BUZ_STATE_DONE) {
res = -EAGAIN;
return res;
}
res = v4l_sync(fh, num);
if (res)
return res;
zr->v4l_sync_tail++;
res = zoran_v4l2_buffer_status(fh, buf, num);
break;
case ZORAN_MAP_MODE_JPG_REC:
case ZORAN_MAP_MODE_JPG_PLAY:
{
struct zoran_sync bs;
if (fh->map_mode == ZORAN_MAP_MODE_JPG_PLAY)
buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
else
buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (buf->type != buf_type) {
dprintk(1, KERN_ERR
"%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
ZR_DEVNAME(zr), buf->type, fh->map_mode);
res = -EINVAL;
return res;
}
num = zr->jpg_pend[zr->jpg_que_tail & BUZ_MASK_FRAME];
if (file->f_flags & O_NONBLOCK &&
zr->jpg_buffers.buffer[num].state != BUZ_STATE_DONE) {
res = -EAGAIN;
return res;
}
bs.frame = 0; /* suppress compiler warning */
res = jpg_sync(fh, &bs);
if (res)
return res;
res = zoran_v4l2_buffer_status(fh, buf, bs.frame);
break;
}
default:
dprintk(1, KERN_ERR
"%s: VIDIOC_DQBUF - unsupported type %d\n",
ZR_DEVNAME(zr), buf->type);
res = -EINVAL;
break;
}
return res;
}
static int zoran_streamon(struct file *file, void *__fh, enum v4l2_buf_type type)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int res = 0;
switch (fh->map_mode) {
case ZORAN_MAP_MODE_RAW: /* raw capture */
if (zr->v4l_buffers.active != ZORAN_ACTIVE ||
fh->buffers.active != ZORAN_ACTIVE) {
res = -EBUSY;
return res;
}
zr->v4l_buffers.active = fh->buffers.active = ZORAN_LOCKED;
zr->v4l_settings = fh->v4l_settings;
zr->v4l_sync_tail = zr->v4l_pend_tail;
if (!zr->v4l_memgrab_active &&
zr->v4l_pend_head != zr->v4l_pend_tail) {
zr36057_set_memgrab(zr, 1);
}
break;
case ZORAN_MAP_MODE_JPG_REC:
case ZORAN_MAP_MODE_JPG_PLAY:
/* what is the codec mode right now? */
if (zr->jpg_buffers.active != ZORAN_ACTIVE ||
fh->buffers.active != ZORAN_ACTIVE) {
res = -EBUSY;
return res;
}
zr->jpg_buffers.active = fh->buffers.active = ZORAN_LOCKED;
if (zr->jpg_que_head != zr->jpg_que_tail) {
/* Start the jpeg codec when the first frame is queued */
jpeg_start(zr);
}
break;
default:
dprintk(1,
KERN_ERR
"%s: VIDIOC_STREAMON - invalid map mode %d\n",
ZR_DEVNAME(zr), fh->map_mode);
res = -EINVAL;
break;
}
return res;
}
static int zoran_streamoff(struct file *file, void *__fh, enum v4l2_buf_type type)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int i, res = 0;
unsigned long flags;
switch (fh->map_mode) {
case ZORAN_MAP_MODE_RAW: /* raw capture */
if (fh->buffers.active == ZORAN_FREE &&
zr->v4l_buffers.active != ZORAN_FREE) {
res = -EPERM; /* stay off other's settings! */
return res;
}
if (zr->v4l_buffers.active == ZORAN_FREE)
return res;
spin_lock_irqsave(&zr->spinlock, flags);
/* unload capture */
if (zr->v4l_memgrab_active) {
zr36057_set_memgrab(zr, 0);
}
for (i = 0; i < fh->buffers.num_buffers; i++)
zr->v4l_buffers.buffer[i].state = BUZ_STATE_USER;
fh->buffers = zr->v4l_buffers;
zr->v4l_buffers.active = fh->buffers.active = ZORAN_FREE;
zr->v4l_grab_seq = 0;
zr->v4l_pend_head = zr->v4l_pend_tail = 0;
zr->v4l_sync_tail = 0;
spin_unlock_irqrestore(&zr->spinlock, flags);
break;
case ZORAN_MAP_MODE_JPG_REC:
case ZORAN_MAP_MODE_JPG_PLAY:
if (fh->buffers.active == ZORAN_FREE &&
zr->jpg_buffers.active != ZORAN_FREE) {
res = -EPERM; /* stay off other's settings! */
return res;
}
if (zr->jpg_buffers.active == ZORAN_FREE)
return res;
res = jpg_qbuf(fh, -1,
(fh->map_mode == ZORAN_MAP_MODE_JPG_REC) ?
BUZ_MODE_MOTION_COMPRESS :
BUZ_MODE_MOTION_DECOMPRESS);
if (res)
return res;
break;
default:
dprintk(1, KERN_ERR
"%s: VIDIOC_STREAMOFF - invalid map mode %d\n",
ZR_DEVNAME(zr), fh->map_mode);
res = -EINVAL;
break;
}
return res;
}
static int zoran_g_std(struct file *file, void *__fh, v4l2_std_id *std)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
*std = zr->norm;
return 0;
}
static int zoran_s_std(struct file *file, void *__fh, v4l2_std_id std)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int res = 0;
res = zoran_set_norm(zr, std);
if (res)
return res;
res = wait_grab_pending(zr);
return res;
}
static int zoran_enum_input(struct file *file, void *__fh,
struct v4l2_input *inp)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
if (inp->index >= zr->card.inputs)
return -EINVAL;
strncpy(inp->name, zr->card.input[inp->index].name,
sizeof(inp->name) - 1);
inp->type = V4L2_INPUT_TYPE_CAMERA;
inp->std = V4L2_STD_ALL;
/* Get status of video decoder */
decoder_call(zr, video, g_input_status, &inp->status);
return 0;
}
static int zoran_g_input(struct file *file, void *__fh, unsigned int *input)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
*input = zr->input;
return 0;
}
static int zoran_s_input(struct file *file, void *__fh, unsigned int input)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int res;
res = zoran_set_input(zr, input);
if (res)
return res;
/* Make sure the changes come into effect */
res = wait_grab_pending(zr);
return res;
}
static int zoran_enum_output(struct file *file, void *__fh,
struct v4l2_output *outp)
{
if (outp->index != 0)
return -EINVAL;
outp->index = 0;
outp->type = V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY;
strncpy(outp->name, "Autodetect", sizeof(outp->name)-1);
return 0;
}
static int zoran_g_output(struct file *file, void *__fh, unsigned int *output)
{
*output = 0;
return 0;
}
static int zoran_s_output(struct file *file, void *__fh, unsigned int output)
{
if (output != 0)
return -EINVAL;
return 0;
}
/* cropping (sub-frame capture) */
static int zoran_g_selection(struct file *file, void *__fh, struct v4l2_selection *sel)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (fh->map_mode == ZORAN_MAP_MODE_RAW) {
dprintk(1, KERN_ERR
"%s: VIDIOC_G_SELECTION - subcapture only supported for compressed capture\n",
ZR_DEVNAME(zr));
return -EINVAL;
}
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
sel->r.top = fh->jpg_settings.img_y;
sel->r.left = fh->jpg_settings.img_x;
sel->r.width = fh->jpg_settings.img_width;
sel->r.height = fh->jpg_settings.img_height;
break;
case V4L2_SEL_TGT_CROP_DEFAULT:
sel->r.top = sel->r.left = 0;
sel->r.width = BUZ_MIN_WIDTH;
sel->r.height = BUZ_MIN_HEIGHT;
break;
case V4L2_SEL_TGT_CROP_BOUNDS:
sel->r.top = sel->r.left = 0;
sel->r.width = BUZ_MAX_WIDTH;
sel->r.height = BUZ_MAX_HEIGHT;
break;
default:
return -EINVAL;
}
return 0;
}
static int zoran_s_selection(struct file *file, void *__fh, struct v4l2_selection *sel)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
struct zoran_jpg_settings settings;
int res;
if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (sel->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
if (fh->map_mode == ZORAN_MAP_MODE_RAW) {
dprintk(1, KERN_ERR
"%s: VIDIOC_S_SELECTION - subcapture only supported for compressed capture\n",
ZR_DEVNAME(zr));
return -EINVAL;
}
settings = fh->jpg_settings;
if (fh->buffers.allocated) {
dprintk(1, KERN_ERR
"%s: VIDIOC_S_SELECTION - cannot change settings while active\n",
ZR_DEVNAME(zr));
return -EBUSY;
}
/* move into a form that we understand */
settings.img_x = sel->r.left;
settings.img_y = sel->r.top;
settings.img_width = sel->r.width;
settings.img_height = sel->r.height;
/* check validity */
res = zoran_check_jpg_settings(zr, &settings, 0);
if (res)
return res;
/* accept */
fh->jpg_settings = settings;
return res;
}
static int zoran_g_jpegcomp(struct file *file, void *__fh,
struct v4l2_jpegcompression *params)
{
struct zoran_fh *fh = __fh;
memset(params, 0, sizeof(*params));
params->quality = fh->jpg_settings.jpg_comp.quality;
params->APPn = fh->jpg_settings.jpg_comp.APPn;
memcpy(params->APP_data,
fh->jpg_settings.jpg_comp.APP_data,
fh->jpg_settings.jpg_comp.APP_len);
params->APP_len = fh->jpg_settings.jpg_comp.APP_len;
memcpy(params->COM_data,
fh->jpg_settings.jpg_comp.COM_data,
fh->jpg_settings.jpg_comp.COM_len);
params->COM_len = fh->jpg_settings.jpg_comp.COM_len;
params->jpeg_markers =
fh->jpg_settings.jpg_comp.jpeg_markers;
return 0;
}
static int zoran_s_jpegcomp(struct file *file, void *__fh,
const struct v4l2_jpegcompression *params)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
int res = 0;
struct zoran_jpg_settings settings;
settings = fh->jpg_settings;
settings.jpg_comp = *params;
if (fh->buffers.active != ZORAN_FREE) {
dprintk(1, KERN_WARNING
"%s: VIDIOC_S_JPEGCOMP called while in playback/capture mode\n",
ZR_DEVNAME(zr));
res = -EBUSY;
return res;
}
res = zoran_check_jpg_settings(zr, &settings, 0);
if (res)
return res;
if (!fh->buffers.allocated)
fh->buffers.buffer_size =
zoran_v4l2_calc_bufsize(&fh->jpg_settings);
fh->jpg_settings.jpg_comp = settings.jpg_comp;
return res;
}
static unsigned int
zoran_poll (struct file *file,
poll_table *wait)
{
struct zoran_fh *fh = file->private_data;
struct zoran *zr = fh->zr;
int res = v4l2_ctrl_poll(file, wait);
int frame;
unsigned long flags;
/* we should check whether buffers are ready to be synced on
* (w/o waits - O_NONBLOCK) here
* if ready for read (sync), return POLLIN|POLLRDNORM,
* if ready for write (sync), return POLLOUT|POLLWRNORM,
* if error, return POLLERR,
* if no buffers queued or so, return POLLNVAL
*/
switch (fh->map_mode) {
case ZORAN_MAP_MODE_RAW:
poll_wait(file, &zr->v4l_capq, wait);
frame = zr->v4l_pend[zr->v4l_sync_tail & V4L_MASK_FRAME];
spin_lock_irqsave(&zr->spinlock, flags);
dprintk(3,
KERN_DEBUG
"%s: %s() raw - active=%c, sync_tail=%lu/%c, pend_tail=%lu, pend_head=%lu\n",
ZR_DEVNAME(zr), __func__,
"FAL"[fh->buffers.active], zr->v4l_sync_tail,
"UPMD"[zr->v4l_buffers.buffer[frame].state],
zr->v4l_pend_tail, zr->v4l_pend_head);
/* Process is the one capturing? */
if (fh->buffers.active != ZORAN_FREE &&
/* Buffer ready to DQBUF? */
zr->v4l_buffers.buffer[frame].state == BUZ_STATE_DONE)
res |= POLLIN | POLLRDNORM;
spin_unlock_irqrestore(&zr->spinlock, flags);
break;
case ZORAN_MAP_MODE_JPG_REC:
case ZORAN_MAP_MODE_JPG_PLAY:
poll_wait(file, &zr->jpg_capq, wait);
frame = zr->jpg_pend[zr->jpg_que_tail & BUZ_MASK_FRAME];
spin_lock_irqsave(&zr->spinlock, flags);
dprintk(3,
KERN_DEBUG
"%s: %s() jpg - active=%c, que_tail=%lu/%c, que_head=%lu, dma=%lu/%lu\n",
ZR_DEVNAME(zr), __func__,
"FAL"[fh->buffers.active], zr->jpg_que_tail,
"UPMD"[zr->jpg_buffers.buffer[frame].state],
zr->jpg_que_head, zr->jpg_dma_tail, zr->jpg_dma_head);
if (fh->buffers.active != ZORAN_FREE &&
zr->jpg_buffers.buffer[frame].state == BUZ_STATE_DONE) {
if (fh->map_mode == ZORAN_MAP_MODE_JPG_REC)
res |= POLLIN | POLLRDNORM;
else
res |= POLLOUT | POLLWRNORM;
}
spin_unlock_irqrestore(&zr->spinlock, flags);
break;
default:
dprintk(1,
KERN_ERR
"%s: %s - internal error, unknown map_mode=%d\n",
ZR_DEVNAME(zr), __func__, fh->map_mode);
res |= POLLERR;
}
return res;
}
/*
* This maps the buffers to user space.
*
* Depending on the state of fh->map_mode
* the V4L or the MJPEG buffers are mapped
* per buffer or all together
*
* Note that we need to connect to some
* unmap signal event to unmap the de-allocate
* the buffer accordingly (zoran_vm_close())
*/
static void
zoran_vm_open (struct vm_area_struct *vma)
{
struct zoran_mapping *map = vma->vm_private_data;
atomic_inc(&map->count);
}
static void
zoran_vm_close (struct vm_area_struct *vma)
{
struct zoran_mapping *map = vma->vm_private_data;
struct zoran_fh *fh = map->fh;
struct zoran *zr = fh->zr;
int i;
dprintk(3, KERN_INFO "%s: %s - munmap(%s)\n", ZR_DEVNAME(zr),
__func__, mode_name(fh->map_mode));
for (i = 0; i < fh->buffers.num_buffers; i++) {
if (fh->buffers.buffer[i].map == map)
fh->buffers.buffer[i].map = NULL;
}
kfree(map);
/* Any buffers still mapped? */
for (i = 0; i < fh->buffers.num_buffers; i++) {
if (fh->buffers.buffer[i].map) {
return;
}
}
dprintk(3, KERN_INFO "%s: %s - free %s buffers\n", ZR_DEVNAME(zr),
__func__, mode_name(fh->map_mode));
if (fh->map_mode == ZORAN_MAP_MODE_RAW) {
if (fh->buffers.active != ZORAN_FREE) {
unsigned long flags;
spin_lock_irqsave(&zr->spinlock, flags);
zr36057_set_memgrab(zr, 0);
zr->v4l_buffers.allocated = 0;
zr->v4l_buffers.active = fh->buffers.active = ZORAN_FREE;
spin_unlock_irqrestore(&zr->spinlock, flags);
}
v4l_fbuffer_free(fh);
} else {
if (fh->buffers.active != ZORAN_FREE) {
jpg_qbuf(fh, -1, zr->codec_mode);
zr->jpg_buffers.allocated = 0;
zr->jpg_buffers.active = fh->buffers.active = ZORAN_FREE;
}
jpg_fbuffer_free(fh);
}
}
static const struct vm_operations_struct zoran_vm_ops = {
.open = zoran_vm_open,
.close = zoran_vm_close,
};
static int
zoran_mmap (struct file *file,
struct vm_area_struct *vma)
{
struct zoran_fh *fh = file->private_data;
struct zoran *zr = fh->zr;
unsigned long size = (vma->vm_end - vma->vm_start);
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
int i, j;
unsigned long page, start = vma->vm_start, todo, pos, fraglen;
int first, last;
struct zoran_mapping *map;
int res = 0;
dprintk(3,
KERN_INFO "%s: %s(%s) of 0x%08lx-0x%08lx (size=%lu)\n",
ZR_DEVNAME(zr), __func__,
mode_name(fh->map_mode), vma->vm_start, vma->vm_end, size);
if (!(vma->vm_flags & VM_SHARED) || !(vma->vm_flags & VM_READ) ||
!(vma->vm_flags & VM_WRITE)) {
dprintk(1,
KERN_ERR
"%s: %s - no MAP_SHARED/PROT_{READ,WRITE} given\n",
ZR_DEVNAME(zr), __func__);
return -EINVAL;
}
if (!fh->buffers.allocated) {
dprintk(1,
KERN_ERR
"%s: %s(%s) - buffers not yet allocated\n",
ZR_DEVNAME(zr), __func__, mode_name(fh->map_mode));
res = -ENOMEM;
return res;
}
first = offset / fh->buffers.buffer_size;
last = first - 1 + size / fh->buffers.buffer_size;
if (offset % fh->buffers.buffer_size != 0 ||
size % fh->buffers.buffer_size != 0 || first < 0 ||
last < 0 || first >= fh->buffers.num_buffers ||
last >= fh->buffers.buffer_size) {
dprintk(1,
KERN_ERR
"%s: %s(%s) - offset=%lu or size=%lu invalid for bufsize=%d and numbufs=%d\n",
ZR_DEVNAME(zr), __func__, mode_name(fh->map_mode), offset, size,
fh->buffers.buffer_size,
fh->buffers.num_buffers);
res = -EINVAL;
return res;
}
/* Check if any buffers are already mapped */
for (i = first; i <= last; i++) {
if (fh->buffers.buffer[i].map) {
dprintk(1,
KERN_ERR
"%s: %s(%s) - buffer %d already mapped\n",
ZR_DEVNAME(zr), __func__, mode_name(fh->map_mode), i);
res = -EBUSY;
return res;
}
}
/* map these buffers */
map = kmalloc(sizeof(struct zoran_mapping), GFP_KERNEL);
if (!map) {
res = -ENOMEM;
return res;
}
map->fh = fh;
atomic_set(&map->count, 1);
vma->vm_ops = &zoran_vm_ops;
vma->vm_flags |= VM_DONTEXPAND;
vma->vm_private_data = map;
if (fh->map_mode == ZORAN_MAP_MODE_RAW) {
for (i = first; i <= last; i++) {
todo = size;
if (todo > fh->buffers.buffer_size)
todo = fh->buffers.buffer_size;
page = fh->buffers.buffer[i].v4l.fbuffer_phys;
if (remap_pfn_range(vma, start, page >> PAGE_SHIFT,
todo, PAGE_SHARED)) {
dprintk(1,
KERN_ERR
"%s: %s(V4L) - remap_pfn_range failed\n",
ZR_DEVNAME(zr), __func__);
res = -EAGAIN;
return res;
}
size -= todo;
start += todo;
fh->buffers.buffer[i].map = map;
if (size == 0)
break;
}
} else {
for (i = first; i <= last; i++) {
for (j = 0;
j < fh->buffers.buffer_size / PAGE_SIZE;
j++) {
fraglen =
(le32_to_cpu(fh->buffers.buffer[i].jpg.
frag_tab[2 * j + 1]) & ~1) << 1;
todo = size;
if (todo > fraglen)
todo = fraglen;
pos =
le32_to_cpu(fh->buffers.
buffer[i].jpg.frag_tab[2 * j]);
/* should just be pos on i386 */
page = virt_to_phys(bus_to_virt(pos))
>> PAGE_SHIFT;
if (remap_pfn_range(vma, start, page,
todo, PAGE_SHARED)) {
dprintk(1,
KERN_ERR
"%s: %s(V4L) - remap_pfn_range failed\n",
ZR_DEVNAME(zr), __func__);
res = -EAGAIN;
return res;
}
size -= todo;
start += todo;
if (size == 0)
break;
if (le32_to_cpu(fh->buffers.buffer[i].jpg.
frag_tab[2 * j + 1]) & 1)
break; /* was last fragment */
}
fh->buffers.buffer[i].map = map;
if (size == 0)
break;
}
}
return res;
}
static const struct v4l2_ioctl_ops zoran_ioctl_ops = {
.vidioc_querycap = zoran_querycap,
.vidioc_s_selection = zoran_s_selection,
.vidioc_g_selection = zoran_g_selection,
.vidioc_enum_input = zoran_enum_input,
.vidioc_g_input = zoran_g_input,
.vidioc_s_input = zoran_s_input,
.vidioc_enum_output = zoran_enum_output,
.vidioc_g_output = zoran_g_output,
.vidioc_s_output = zoran_s_output,
.vidioc_g_fbuf = zoran_g_fbuf,
.vidioc_s_fbuf = zoran_s_fbuf,
.vidioc_g_std = zoran_g_std,
.vidioc_s_std = zoran_s_std,
.vidioc_g_jpegcomp = zoran_g_jpegcomp,
.vidioc_s_jpegcomp = zoran_s_jpegcomp,
.vidioc_overlay = zoran_overlay,
.vidioc_reqbufs = zoran_reqbufs,
.vidioc_querybuf = zoran_querybuf,
.vidioc_qbuf = zoran_qbuf,
.vidioc_dqbuf = zoran_dqbuf,
.vidioc_streamon = zoran_streamon,
.vidioc_streamoff = zoran_streamoff,
.vidioc_enum_fmt_vid_cap = zoran_enum_fmt_vid_cap,
.vidioc_enum_fmt_vid_out = zoran_enum_fmt_vid_out,
.vidioc_enum_fmt_vid_overlay = zoran_enum_fmt_vid_overlay,
.vidioc_g_fmt_vid_cap = zoran_g_fmt_vid_cap,
.vidioc_g_fmt_vid_out = zoran_g_fmt_vid_out,
.vidioc_g_fmt_vid_overlay = zoran_g_fmt_vid_overlay,
.vidioc_s_fmt_vid_cap = zoran_s_fmt_vid_cap,
.vidioc_s_fmt_vid_out = zoran_s_fmt_vid_out,
.vidioc_s_fmt_vid_overlay = zoran_s_fmt_vid_overlay,
.vidioc_try_fmt_vid_cap = zoran_try_fmt_vid_cap,
.vidioc_try_fmt_vid_out = zoran_try_fmt_vid_out,
.vidioc_try_fmt_vid_overlay = zoran_try_fmt_vid_overlay,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static const struct v4l2_file_operations zoran_fops = {
.owner = THIS_MODULE,
.open = zoran_open,
.release = zoran_close,
.unlocked_ioctl = video_ioctl2,
.mmap = zoran_mmap,
.poll = zoran_poll,
};
struct video_device zoran_template = {
.name = ZORAN_NAME,
.fops = &zoran_fops,
.ioctl_ops = &zoran_ioctl_ops,
.release = &zoran_vdev_release,
.tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
};
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