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nest-open-source / nest-guard / 1.0 / linux / 6754b876e4c89285b30ff59800d23e21ce2dbe3f / . / linux / drivers / staging / cx25821 / cx25821-video.c
blob: 52389308f3337ebb84daa31490f496b8057548ba [file] [log] [blame]
/*
* Driver for the Conexant CX25821 PCIe bridge
*
* Copyright (C) 2009 Conexant Systems Inc.
* Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
* Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
* Parts adapted/taken from Eduardo Moscoso Rubino
* Copyright (C) 2009 Eduardo Moscoso Rubino <moscoso@TopoLogica.com>
*
*
* 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 "cx25821-video.h"
MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
MODULE_LICENSE("GPL");
static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
static unsigned int radio_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
module_param_array(video_nr, int, NULL, 0444);
module_param_array(radio_nr, int, NULL, 0444);
MODULE_PARM_DESC(video_nr, "video device numbers");
MODULE_PARM_DESC(radio_nr, "radio device numbers");
static unsigned int video_debug = VIDEO_DEBUG;
module_param(video_debug, int, 0644);
MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
static unsigned int irq_debug;
module_param(irq_debug, int, 0644);
MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
unsigned int vid_limit = 16;
module_param(vid_limit, int, 0644);
MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
static void cx25821_init_controls(struct cx25821_dev *dev, int chan_num);
static const struct v4l2_file_operations video_fops;
static const struct v4l2_ioctl_ops video_ioctl_ops;
#define FORMAT_FLAGS_PACKED 0x01
struct cx25821_fmt formats[] = {
{
.name = "8 bpp, gray",
.fourcc = V4L2_PIX_FMT_GREY,
.depth = 8,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "4:1:1, packed, Y41P",
.fourcc = V4L2_PIX_FMT_Y41P,
.depth = 12,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "4:2:2, packed, YUYV",
.fourcc = V4L2_PIX_FMT_YUYV,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "4:2:2, packed, UYVY",
.fourcc = V4L2_PIX_FMT_UYVY,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "4:2:0, YUV",
.fourcc = V4L2_PIX_FMT_YUV420,
.depth = 12,
.flags = FORMAT_FLAGS_PACKED,
},
};
int cx25821_get_format_size(void)
{
return ARRAY_SIZE(formats);
}
struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
{
unsigned int i;
if (fourcc == V4L2_PIX_FMT_Y41P || fourcc == V4L2_PIX_FMT_YUV411P) {
return formats + 1;
}
for (i = 0; i < ARRAY_SIZE(formats); i++)
if (formats[i].fourcc == fourcc)
return formats + i;
printk(KERN_ERR "%s(0x%08x) NOT FOUND\n", __func__, fourcc);
return NULL;
}
void cx25821_dump_video_queue(struct cx25821_dev *dev, struct cx25821_dmaqueue *q)
{
struct cx25821_buffer *buf;
struct list_head *item;
dprintk(1, "%s()\n", __func__);
if (!list_empty(&q->active)) {
list_for_each(item, &q->active)
buf = list_entry(item, struct cx25821_buffer, vb.queue);
}
if (!list_empty(&q->queued)) {
list_for_each(item, &q->queued)
buf = list_entry(item, struct cx25821_buffer, vb.queue);
}
}
void cx25821_video_wakeup(struct cx25821_dev *dev, struct cx25821_dmaqueue *q,
u32 count)
{
struct cx25821_buffer *buf;
int bc;
for (bc = 0;; bc++) {
if (list_empty(&q->active)) {
dprintk(1, "bc=%d (=0: active empty)\n", bc);
break;
}
buf =
list_entry(q->active.next, struct cx25821_buffer, vb.queue);
/* count comes from the hw and it is 16bit wide --
* this trick handles wrap-arounds correctly for
* up to 32767 buffers in flight... */
if ((s16) (count - buf->count) < 0) {
break;
}
do_gettimeofday(&buf->vb.ts);
buf->vb.state = VIDEOBUF_DONE;
list_del(&buf->vb.queue);
wake_up(&buf->vb.done);
}
if (list_empty(&q->active))
del_timer(&q->timeout);
else
mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
if (bc != 1)
printk(KERN_ERR "%s: %d buffers handled (should be 1)\n",
__func__, bc);
}
#ifdef TUNER_FLAG
int cx25821_set_tvnorm(struct cx25821_dev *dev, v4l2_std_id norm)
{
dprintk(1, "%s(norm = 0x%08x) name: [%s]\n", __func__,
(unsigned int)norm, v4l2_norm_to_name(norm));
dev->tvnorm = norm;
/* Tell the internal A/V decoder */
cx25821_call_all(dev, core, s_std, norm);
return 0;
}
#endif
struct video_device *cx25821_vdev_init(struct cx25821_dev *dev,
struct pci_dev *pci,
struct video_device *template,
char *type)
{
struct video_device *vfd;
dprintk(1, "%s()\n", __func__);
vfd = video_device_alloc();
if (NULL == vfd)
return NULL;
*vfd = *template;
vfd->v4l2_dev = &dev->v4l2_dev;
vfd->release = video_device_release;
snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name, type,
cx25821_boards[dev->board].name);
video_set_drvdata(vfd, dev);
return vfd;
}
/*
static int cx25821_ctrl_query(struct v4l2_queryctrl *qctrl)
{
int i;
if (qctrl->id < V4L2_CID_BASE || qctrl->id >= V4L2_CID_LASTP1)
return -EINVAL;
for (i = 0; i < CX25821_CTLS; i++)
if (cx25821_ctls[i].v.id == qctrl->id)
break;
if (i == CX25821_CTLS) {
*qctrl = no_ctl;
return 0;
}
*qctrl = cx25821_ctls[i].v;
return 0;
}
*/
/* resource management */
int cx25821_res_get(struct cx25821_dev *dev, struct cx25821_fh *fh, unsigned int bit)
{
dprintk(1, "%s()\n", __func__);
if (fh->resources & bit)
/* have it already allocated */
return 1;
/* is it free? */
mutex_lock(&dev->lock);
if (dev->channels[fh->channel_id].resources & bit) {
/* no, someone else uses it */
mutex_unlock(&dev->lock);
return 0;
}
/* it's free, grab it */
fh->resources |= bit;
dev->channels[fh->channel_id].resources |= bit;
dprintk(1, "res: get %d\n", bit);
mutex_unlock(&dev->lock);
return 1;
}
int cx25821_res_check(struct cx25821_fh *fh, unsigned int bit)
{
return fh->resources & bit;
}
int cx25821_res_locked(struct cx25821_fh *fh, unsigned int bit)
{
return fh->dev->channels[fh->channel_id].resources & bit;
}
void cx25821_res_free(struct cx25821_dev *dev, struct cx25821_fh *fh, unsigned int bits)
{
BUG_ON((fh->resources & bits) != bits);
dprintk(1, "%s()\n", __func__);
mutex_lock(&dev->lock);
fh->resources &= ~bits;
dev->channels[fh->channel_id].resources &= ~bits;
dprintk(1, "res: put %d\n", bits);
mutex_unlock(&dev->lock);
}
int cx25821_video_mux(struct cx25821_dev *dev, unsigned int input)
{
struct v4l2_routing route;
memset(&route, 0, sizeof(route));
dprintk(1, "%s() video_mux: %d [vmux=%d, gpio=0x%x,0x%x,0x%x,0x%x]\n",
__func__, input, INPUT(input)->vmux, INPUT(input)->gpio0,
INPUT(input)->gpio1, INPUT(input)->gpio2, INPUT(input)->gpio3);
dev->input = input;
route.input = INPUT(input)->vmux;
/* Tell the internal A/V decoder */
cx25821_call_all(dev, video, s_routing, INPUT(input)->vmux, 0, 0);
return 0;
}
int cx25821_start_video_dma(struct cx25821_dev *dev,
struct cx25821_dmaqueue *q,
struct cx25821_buffer *buf,
struct sram_channel *channel)
{
int tmp = 0;
/* setup fifo + format */
cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma);
/* reset counter */
cx_write(channel->gpcnt_ctl, 3);
q->count = 1;
/* enable irq */
cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i));
cx_set(channel->int_msk, 0x11);
/* start dma */
cx_write(channel->dma_ctl, 0x11); /* FIFO and RISC enable */
/* make sure upstream setting if any is reversed */
tmp = cx_read(VID_CH_MODE_SEL);
cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
return 0;
}
int cx25821_restart_video_queue(struct cx25821_dev *dev,
struct cx25821_dmaqueue *q,
struct sram_channel *channel)
{
struct cx25821_buffer *buf, *prev;
struct list_head *item;
if (!list_empty(&q->active)) {
buf =
list_entry(q->active.next, struct cx25821_buffer, vb.queue);
cx25821_start_video_dma(dev, q, buf, channel);
list_for_each(item, &q->active) {
buf = list_entry(item, struct cx25821_buffer, vb.queue);
buf->count = q->count++;
}
mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
return 0;
}
prev = NULL;
for (;;) {
if (list_empty(&q->queued))
return 0;
buf =
list_entry(q->queued.next, struct cx25821_buffer, vb.queue);
if (NULL == prev) {
list_move_tail(&buf->vb.queue, &q->active);
cx25821_start_video_dma(dev, q, buf, channel);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
} else if (prev->vb.width == buf->vb.width &&
prev->vb.height == buf->vb.height &&
prev->fmt == buf->fmt) {
list_move_tail(&buf->vb.queue, &q->active);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
prev->risc.jmp[2] = cpu_to_le32(0); /* Bits 63 - 32 */
} else {
return 0;
}
prev = buf;
}
}
void cx25821_vid_timeout(unsigned long data)
{
struct cx25821_data *timeout_data = (struct cx25821_data *)data;
struct cx25821_dev *dev = timeout_data->dev;
struct sram_channel *channel = timeout_data->channel;
struct cx25821_dmaqueue *q = &dev->channels[channel->i].vidq;
struct cx25821_buffer *buf;
unsigned long flags;
/* cx25821_sram_channel_dump(dev, channel); */
cx_clear(channel->dma_ctl, 0x11);
spin_lock_irqsave(&dev->slock, flags);
while (!list_empty(&q->active)) {
buf =
list_entry(q->active.next, struct cx25821_buffer, vb.queue);
list_del(&buf->vb.queue);
buf->vb.state = VIDEOBUF_ERROR;
wake_up(&buf->vb.done);
}
cx25821_restart_video_queue(dev, q, channel);
spin_unlock_irqrestore(&dev->slock, flags);
}
int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
{
u32 count = 0;
int handled = 0;
u32 mask;
struct sram_channel *channel = dev->channels[chan_num].sram_channels;
mask = cx_read(channel->int_msk);
if (0 == (status & mask))
return handled;
cx_write(channel->int_stat, status);
/* risc op code error */
if (status & (1 << 16)) {
printk(KERN_WARNING "%s, %s: video risc op code error\n",
dev->name, channel->name);
cx_clear(channel->dma_ctl, 0x11);
cx25821_sram_channel_dump(dev, channel);
}
/* risc1 y */
if (status & FLD_VID_DST_RISC1) {
spin_lock(&dev->slock);
count = cx_read(channel->gpcnt);
cx25821_video_wakeup(dev,
&dev->channels[channel->i].vidq, count);
spin_unlock(&dev->slock);
handled++;
}
/* risc2 y */
if (status & 0x10) {
dprintk(2, "stopper video\n");
spin_lock(&dev->slock);
cx25821_restart_video_queue(dev,
&dev->channels[channel->i].vidq,
channel);
spin_unlock(&dev->slock);
handled++;
}
return handled;
}
void cx25821_videoioctl_unregister(struct cx25821_dev *dev)
{
if (dev->ioctl_dev) {
if (video_is_registered(dev->ioctl_dev))
video_unregister_device(dev->ioctl_dev);
else
video_device_release(dev->ioctl_dev);
dev->ioctl_dev = NULL;
}
}
void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
{
cx_clear(PCI_INT_MSK, 1);
if (dev->channels[chan_num].video_dev) {
if (video_is_registered(dev->channels[chan_num].video_dev))
video_unregister_device(
dev->channels[chan_num].video_dev);
else
video_device_release(
dev->channels[chan_num].video_dev);
dev->channels[chan_num].video_dev = NULL;
btcx_riscmem_free(dev->pci,
&dev->channels[chan_num].vidq.stopper);
printk(KERN_WARNING "device %d released!\n", chan_num);
}
}
int cx25821_video_register(struct cx25821_dev *dev)
{
int err;
int i;
struct video_device cx25821_video_device = {
.name = "cx25821-video",
.fops = &video_fops,
.minor = -1,
.ioctl_ops = &video_ioctl_ops,
.tvnorms = CX25821_NORMS,
.current_norm = V4L2_STD_NTSC_M,
};
spin_lock_init(&dev->slock);
for (i = 0; i < MAX_VID_CHANNEL_NUM - 1; ++i) {
cx25821_init_controls(dev, i);
cx25821_risc_stopper(dev->pci,
&dev->channels[i].vidq.stopper,
dev->channels[i].sram_channels->dma_ctl,
0x11, 0);
dev->channels[i].sram_channels = &cx25821_sram_channels[i];
dev->channels[i].video_dev = NULL;
dev->channels[i].resources = 0;
cx_write(dev->channels[i].sram_channels->int_stat,
0xffffffff);
INIT_LIST_HEAD(&dev->channels[i].vidq.active);
INIT_LIST_HEAD(&dev->channels[i].vidq.queued);
dev->channels[i].timeout_data.dev = dev;
dev->channels[i].timeout_data.channel =
&cx25821_sram_channels[i];
dev->channels[i].vidq.timeout.function =
cx25821_vid_timeout;
dev->channels[i].vidq.timeout.data =
(unsigned long)&dev->channels[i].timeout_data;
init_timer(&dev->channels[i].vidq.timeout);
/* register v4l devices */
dev->channels[i].video_dev = cx25821_vdev_init(dev,
dev->pci, &cx25821_video_device, "video");
err = video_register_device(dev->channels[i].video_dev,
VFL_TYPE_GRABBER, video_nr[dev->nr]);
if (err < 0)
goto fail_unreg;
}
/* set PCI interrupt */
cx_set(PCI_INT_MSK, 0xff);
/* initial device configuration */
mutex_lock(&dev->lock);
#ifdef TUNER_FLAG
dev->tvnorm = cx25821_video_device.current_norm;
cx25821_set_tvnorm(dev, dev->tvnorm);
#endif
mutex_unlock(&dev->lock);
return 0;
fail_unreg:
cx25821_video_unregister(dev, i);
return err;
}
int cx25821_buffer_setup(struct videobuf_queue *q, unsigned int *count,
unsigned int *size)
{
struct cx25821_fh *fh = q->priv_data;
*size = fh->fmt->depth * fh->width * fh->height >> 3;
if (0 == *count)
*count = 32;
if (*size * *count > vid_limit * 1024 * 1024)
*count = (vid_limit * 1024 * 1024) / *size;
return 0;
}
int cx25821_buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
enum v4l2_field field)
{
struct cx25821_fh *fh = q->priv_data;
struct cx25821_dev *dev = fh->dev;
struct cx25821_buffer *buf =
container_of(vb, struct cx25821_buffer, vb);
int rc, init_buffer = 0;
u32 line0_offset, line1_offset;
struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
int bpl_local = LINE_SIZE_D1;
int channel_opened = fh->channel_id;
BUG_ON(NULL == fh->fmt);
if (fh->width < 48 || fh->width > 720 ||
fh->height < 32 || fh->height > 576)
return -EINVAL;
buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3;
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
if (buf->fmt != fh->fmt ||
buf->vb.width != fh->width ||
buf->vb.height != fh->height || buf->vb.field != field) {
buf->fmt = fh->fmt;
buf->vb.width = fh->width;
buf->vb.height = fh->height;
buf->vb.field = field;
init_buffer = 1;
}
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
init_buffer = 1;
rc = videobuf_iolock(q, &buf->vb, NULL);
if (0 != rc) {
printk(KERN_DEBUG "videobuf_iolock failed!\n");
goto fail;
}
}
dprintk(1, "init_buffer=%d\n", init_buffer);
if (init_buffer) {
channel_opened = dev->channel_opened;
channel_opened = (channel_opened < 0
|| channel_opened > 7) ? 7 : channel_opened;
if (dev->channels[channel_opened]
.pixel_formats == PIXEL_FRMT_411)
buf->bpl = (buf->fmt->depth * buf->vb.width) >> 3;
else
buf->bpl = (buf->fmt->depth >> 3) * (buf->vb.width);
if (dev->channels[channel_opened]
.pixel_formats == PIXEL_FRMT_411) {
bpl_local = buf->bpl;
} else {
bpl_local = buf->bpl; /* Default */
if (channel_opened >= 0 && channel_opened <= 7) {
if (dev->channels[channel_opened]
.use_cif_resolution) {
if (dev->tvnorm & V4L2_STD_PAL_BG
|| dev->tvnorm & V4L2_STD_PAL_DK)
bpl_local = 352 << 1;
else
bpl_local =
dev->channels[channel_opened].
cif_width <<
1;
}
}
}
switch (buf->vb.field) {
case V4L2_FIELD_TOP:
cx25821_risc_buffer(dev->pci, &buf->risc,
dma->sglist, 0, UNSET,
buf->bpl, 0, buf->vb.height);
break;
case V4L2_FIELD_BOTTOM:
cx25821_risc_buffer(dev->pci, &buf->risc,
dma->sglist, UNSET, 0,
buf->bpl, 0, buf->vb.height);
break;
case V4L2_FIELD_INTERLACED:
/* All other formats are top field first */
line0_offset = 0;
line1_offset = buf->bpl;
dprintk(1, "top field first\n");
cx25821_risc_buffer(dev->pci, &buf->risc,
dma->sglist, line0_offset,
bpl_local, bpl_local, bpl_local,
buf->vb.height >> 1);
break;
case V4L2_FIELD_SEQ_TB:
cx25821_risc_buffer(dev->pci, &buf->risc,
dma->sglist,
0, buf->bpl * (buf->vb.height >> 1),
buf->bpl, 0, buf->vb.height >> 1);
break;
case V4L2_FIELD_SEQ_BT:
cx25821_risc_buffer(dev->pci, &buf->risc,
dma->sglist,
buf->bpl * (buf->vb.height >> 1), 0,
buf->bpl, 0, buf->vb.height >> 1);
break;
default:
BUG();
}
}
dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
buf, buf->vb.i, fh->width, fh->height, fh->fmt->depth,
fh->fmt->name, (unsigned long)buf->risc.dma);
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
cx25821_free_buffer(q, buf);
return rc;
}
void cx25821_buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
struct cx25821_buffer *buf =
container_of(vb, struct cx25821_buffer, vb);
cx25821_free_buffer(q, buf);
}
struct videobuf_queue *get_queue(struct cx25821_fh *fh)
{
switch (fh->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
return &fh->vidq;
default:
BUG();
return NULL;
}
}
int cx25821_get_resource(struct cx25821_fh *fh, int resource)
{
switch (fh->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
return resource;
default:
BUG();
return 0;
}
}
int cx25821_video_mmap(struct file *file, struct vm_area_struct *vma)
{
struct cx25821_fh *fh = file->private_data;
return videobuf_mmap_mapper(get_queue(fh), vma);
}
static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
struct cx25821_buffer *buf =
container_of(vb, struct cx25821_buffer, vb);
struct cx25821_buffer *prev;
struct cx25821_fh *fh = vq->priv_data;
struct cx25821_dev *dev = fh->dev;
struct cx25821_dmaqueue *q = &dev->channels[fh->channel_id].vidq;
/* add jump to stopper */
buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]);
if (!list_empty(&q->queued)) {
list_add_tail(&buf->vb.queue, &q->queued);
buf->vb.state = VIDEOBUF_QUEUED;
dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf,
buf->vb.i);
} else if (list_empty(&q->active)) {
list_add_tail(&buf->vb.queue, &q->active);
cx25821_start_video_dma(dev, q, buf,
dev->channels[fh->channel_id].
sram_channels);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
dprintk(2,
"[%p/%d] buffer_queue - first active, buf cnt = %d, \
q->count = %d\n",
buf, buf->vb.i, buf->count, q->count);
} else {
prev =
list_entry(q->active.prev, struct cx25821_buffer, vb.queue);
if (prev->vb.width == buf->vb.width
&& prev->vb.height == buf->vb.height
&& prev->fmt == buf->fmt) {
list_add_tail(&buf->vb.queue, &q->active);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
/* 64 bit bits 63-32 */
prev->risc.jmp[2] = cpu_to_le32(0);
dprintk(2,
"[%p/%d] buffer_queue - append to active, \
buf->count=%d\n",
buf, buf->vb.i, buf->count);
} else {
list_add_tail(&buf->vb.queue, &q->queued);
buf->vb.state = VIDEOBUF_QUEUED;
dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf,
buf->vb.i);
}
}
if (list_empty(&q->active))
dprintk(2, "active queue empty!\n");
}
static struct videobuf_queue_ops cx25821_video_qops = {
.buf_setup = cx25821_buffer_setup,
.buf_prepare = cx25821_buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = cx25821_buffer_release,
};
static int video_open(struct file *file)
{
struct video_device *vdev = video_devdata(file);
struct cx25821_dev *h, *dev = video_drvdata(file);
struct cx25821_fh *fh;
struct list_head *list;
int minor = video_devdata(file)->minor;
enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
u32 pix_format;
int ch_id = 0;
int i;
dprintk(1, "open dev=%s type=%s\n",
video_device_node_name(vdev),
v4l2_type_names[type]);
/* allocate + initialize per filehandle data */
fh = kzalloc(sizeof(*fh), GFP_KERNEL);
if (NULL == fh)
return -ENOMEM;
lock_kernel();
list_for_each(list, &cx25821_devlist)
{
h = list_entry(list, struct cx25821_dev, devlist);
for (i = 0; i < MAX_VID_CHANNEL_NUM; i++) {
if (h->channels[i].video_dev &&
h->channels[i].video_dev->minor == minor) {
dev = h;
ch_id = i;
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
}
}
}
if (NULL == dev) {
unlock_kernel();
return -ENODEV;
}
file->private_data = fh;
fh->dev = dev;
fh->type = type;
fh->width = 720;
fh->channel_id = ch_id;
if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
fh->height = 576;
else
fh->height = 480;
dev->channel_opened = fh->channel_id;
pix_format =
(dev->channels[ch_id].pixel_formats ==
PIXEL_FRMT_411) ? V4L2_PIX_FMT_Y41P : V4L2_PIX_FMT_YUYV;
fh->fmt = cx25821_format_by_fourcc(pix_format);
v4l2_prio_open(&dev->channels[ch_id].prio, &fh->prio);
videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct cx25821_buffer), fh, NULL);
dprintk(1, "post videobuf_queue_init()\n");
unlock_kernel();
return 0;
}
static ssize_t video_read(struct file *file, char __user * data, size_t count,
loff_t *ppos)
{
struct cx25821_fh *fh = file->private_data;
switch (fh->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
if (cx25821_res_locked(fh, RESOURCE_VIDEO0))
return -EBUSY;
return videobuf_read_one(&fh->vidq, data, count, ppos,
file->f_flags & O_NONBLOCK);
default:
BUG();
return 0;
}
}
static unsigned int video_poll(struct file *file,
struct poll_table_struct *wait)
{
struct cx25821_fh *fh = file->private_data;
struct cx25821_buffer *buf;
if (cx25821_res_check(fh, RESOURCE_VIDEO0)) {
/* streaming capture */
if (list_empty(&fh->vidq.stream))
return POLLERR;
buf = list_entry(fh->vidq.stream.next,
struct cx25821_buffer, vb.stream);
} else {
/* read() capture */
buf = (struct cx25821_buffer *)fh->vidq.read_buf;
if (NULL == buf)
return POLLERR;
}
poll_wait(file, &buf->vb.done, wait);
if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR) {
if (buf->vb.state == VIDEOBUF_DONE) {
struct cx25821_dev *dev = fh->dev;
if (dev && dev->channels[fh->channel_id]
.use_cif_resolution) {
u8 cam_id = *((char *)buf->vb.baddr + 3);
memcpy((char *)buf->vb.baddr,
(char *)buf->vb.baddr + (fh->width * 2),
(fh->width * 2));
*((char *)buf->vb.baddr + 3) = cam_id;
}
}
return POLLIN | POLLRDNORM;
}
return 0;
}
static int video_release(struct file *file)
{
struct cx25821_fh *fh = file->private_data;
struct cx25821_dev *dev = fh->dev;
/* stop the risc engine and fifo */
cx_write(channel0->dma_ctl, 0); /* FIFO and RISC disable */
/* stop video capture */
if (cx25821_res_check(fh, RESOURCE_VIDEO0)) {
videobuf_queue_cancel(&fh->vidq);
cx25821_res_free(dev, fh, RESOURCE_VIDEO0);
}
if (fh->vidq.read_buf) {
cx25821_buffer_release(&fh->vidq, fh->vidq.read_buf);
kfree(fh->vidq.read_buf);
}
videobuf_mmap_free(&fh->vidq);
v4l2_prio_close(&dev->channels[fh->channel_id].prio, fh->prio);
file->private_data = NULL;
kfree(fh);
return 0;
}
static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev = fh->dev;
if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
return -EINVAL;
if (unlikely(i != fh->type))
return -EINVAL;
if (unlikely(!cx25821_res_get(dev, fh,
cx25821_get_resource(fh, RESOURCE_VIDEO0))))
return -EBUSY;
return videobuf_streamon(get_queue(fh));
}
static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev = fh->dev;
int err, res;
if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (i != fh->type)
return -EINVAL;
res = cx25821_get_resource(fh, RESOURCE_VIDEO0);
err = videobuf_streamoff(get_queue(fh));
if (err < 0)
return err;
cx25821_res_free(dev, fh, res);
return 0;
}
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct v4l2_mbus_framefmt mbus_fmt;
int err;
int pix_format = PIXEL_FRMT_422;
if (fh) {
err = v4l2_prio_check(&dev->channels[fh->channel_id]
.prio, fh->prio);
if (0 != err)
return err;
}
dprintk(2, "%s()\n", __func__);
err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
if (0 != err)
return err;
fh->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
fh->vidq.field = f->fmt.pix.field;
/* check if width and height is valid based on set standard */
if (cx25821_is_valid_width(f->fmt.pix.width, dev->tvnorm))
fh->width = f->fmt.pix.width;
if (cx25821_is_valid_height(f->fmt.pix.height, dev->tvnorm))
fh->height = f->fmt.pix.height;
if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
pix_format = PIXEL_FRMT_411;
else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV)
pix_format = PIXEL_FRMT_422;
else
return -EINVAL;
cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
/* check if cif resolution */
if (fh->width == 320 || fh->width == 352)
dev->channels[fh->channel_id].use_cif_resolution = 1;
else
dev->channels[fh->channel_id].use_cif_resolution = 0;
dev->channels[fh->channel_id].cif_width = fh->width;
medusa_set_resolution(dev, fh->width, SRAM_CH00);
dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width,
fh->height, fh->vidq.field);
v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
cx25821_call_all(dev, video, s_mbus_fmt, &mbus_fmt);
return 0;
}
static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
int ret_val = 0;
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
ret_val = videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK);
p->sequence = dev->channels[fh->channel_id].vidq.count;
return ret_val;
}
static int vidioc_log_status(struct file *file, void *priv)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct cx25821_fh *fh = priv;
char name[32 + 2];
struct sram_channel *sram_ch = dev->channels[fh->channel_id]
.sram_channels;
u32 tmp = 0;
snprintf(name, sizeof(name), "%s/2", dev->name);
printk(KERN_INFO "%s/2: ============ START LOG STATUS ============\n",
dev->name);
cx25821_call_all(dev, core, log_status);
tmp = cx_read(sram_ch->dma_ctl);
printk(KERN_INFO "Video input 0 is %s\n",
(tmp & 0x11) ? "streaming" : "stopped");
printk(KERN_INFO "%s/2: ============= END LOG STATUS =============\n",
dev->name);
return 0;
}
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctl)
{
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
int err;
if (fh) {
err = v4l2_prio_check(&dev->channels[fh->channel_id]
.prio, fh->prio);
if (0 != err)
return err;
}
return cx25821_set_control(dev, ctl, fh->channel_id);
}
/* VIDEO IOCTLS */
int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f)
{
struct cx25821_fh *fh = priv;
f->fmt.pix.width = fh->width;
f->fmt.pix.height = fh->height;
f->fmt.pix.field = fh->vidq.field;
f->fmt.pix.pixelformat = fh->fmt->fourcc;
f->fmt.pix.bytesperline = (f->fmt.pix.width * fh->fmt->depth) >> 3;
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
return 0;
}
int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f)
{
struct cx25821_fmt *fmt;
enum v4l2_field field;
unsigned int maxw, maxh;
fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
if (NULL == fmt)
return -EINVAL;
field = f->fmt.pix.field;
maxw = 720;
maxh = 576;
if (V4L2_FIELD_ANY == field) {
field = (f->fmt.pix.height > maxh / 2)
? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
}
switch (field) {
case V4L2_FIELD_TOP:
case V4L2_FIELD_BOTTOM:
maxh = maxh / 2;
break;
case V4L2_FIELD_INTERLACED:
break;
default:
return -EINVAL;
}
f->fmt.pix.field = field;
if (f->fmt.pix.height < 32)
f->fmt.pix.height = 32;
if (f->fmt.pix.height > maxh)
f->fmt.pix.height = maxh;
if (f->fmt.pix.width < 48)
f->fmt.pix.width = 48;
if (f->fmt.pix.width > maxw)
f->fmt.pix.width = maxw;
f->fmt.pix.width &= ~0x03;
f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
return 0;
}
int cx25821_vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
strcpy(cap->driver, "cx25821");
strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
cap->version = CX25821_VERSION_CODE;
cap->capabilities =
V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
if (UNSET != dev->tuner_type)
cap->capabilities |= V4L2_CAP_TUNER;
return 0;
}
int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (unlikely(f->index >= ARRAY_SIZE(formats)))
return -EINVAL;
strlcpy(f->description, formats[f->index].name, sizeof(f->description));
f->pixelformat = formats[f->index].fourcc;
return 0;
}
#ifdef CONFIG_VIDEO_V4L1_COMPAT
int cx25821_vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
{
struct cx25821_fh *fh = priv;
struct videobuf_queue *q;
struct v4l2_requestbuffers req;
unsigned int i;
int err;
q = get_queue(fh);
memset(&req, 0, sizeof(req));
req.type = q->type;
req.count = 8;
req.memory = V4L2_MEMORY_MMAP;
err = videobuf_reqbufs(q, &req);
if (err < 0)
return err;
mbuf->frames = req.count;
mbuf->size = 0;
for (i = 0; i < mbuf->frames; i++) {
mbuf->offsets[i] = q->bufs[i]->boff;
mbuf->size += q->bufs[i]->bsize;
}
return 0;
}
#endif
int cx25821_vidioc_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *p)
{
struct cx25821_fh *fh = priv;
return videobuf_reqbufs(get_queue(fh), p);
}
int cx25821_vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
struct cx25821_fh *fh = priv;
return videobuf_querybuf(get_queue(fh), p);
}
int cx25821_vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
struct cx25821_fh *fh = priv;
return videobuf_qbuf(get_queue(fh), p);
}
int cx25821_vidioc_g_priority(struct file *file, void *f, enum v4l2_priority *p)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)f)->dev;
struct cx25821_fh *fh = f;
*p = v4l2_prio_max(&dev->channels[fh->channel_id].prio);
return 0;
}
int cx25821_vidioc_s_priority(struct file *file, void *f, enum v4l2_priority prio)
{
struct cx25821_fh *fh = f;
struct cx25821_dev *dev = ((struct cx25821_fh *)f)->dev;
return v4l2_prio_change(&dev->channels[fh->channel_id]
.prio, &fh->prio, prio);
}
#ifdef TUNER_FLAG
int cx25821_vidioc_s_std(struct file *file, void *priv, v4l2_std_id * tvnorms)
{
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
int err;
dprintk(1, "%s()\n", __func__);
if (fh) {
err = v4l2_prio_check(&dev->channels[fh->channel_id]
.prio, fh->prio);
if (0 != err)
return err;
}
if (dev->tvnorm == *tvnorms) {
return 0;
}
mutex_lock(&dev->lock);
cx25821_set_tvnorm(dev, *tvnorms);
mutex_unlock(&dev->lock);
medusa_set_videostandard(dev);
return 0;
}
#endif
int cx25821_enum_input(struct cx25821_dev *dev, struct v4l2_input *i)
{
static const char *iname[] = {
[CX25821_VMUX_COMPOSITE] = "Composite",
[CX25821_VMUX_SVIDEO] = "S-Video",
[CX25821_VMUX_DEBUG] = "for debug only",
};
unsigned int n;
dprintk(1, "%s()\n", __func__);
n = i->index;
if (n >= 2)
return -EINVAL;
if (0 == INPUT(n)->type)
return -EINVAL;
memset(i, 0, sizeof(*i));
i->index = n;
i->type = V4L2_INPUT_TYPE_CAMERA;
strcpy(i->name, iname[INPUT(n)->type]);
i->std = CX25821_NORMS;
return 0;
}
int cx25821_vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *i)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
dprintk(1, "%s()\n", __func__);
return cx25821_enum_input(dev, i);
}
int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
*i = dev->input;
dprintk(1, "%s() returns %d\n", __func__, *i);
return 0;
}
int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
{
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
int err;
dprintk(1, "%s(%d)\n", __func__, i);
if (fh) {
err = v4l2_prio_check(&dev->channels[fh->channel_id]
.prio, fh->prio);
if (0 != err)
return err;
}
if (i > 2) {
dprintk(1, "%s() -EINVAL\n", __func__);
return -EINVAL;
}
mutex_lock(&dev->lock);
cx25821_video_mux(dev, i);
mutex_unlock(&dev->lock);
return 0;
}
#ifdef TUNER_FLAG
int cx25821_vidioc_g_frequency(struct file *file, void *priv, struct v4l2_frequency *f)
{
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev = fh->dev;
f->frequency = dev->freq;
cx25821_call_all(dev, tuner, g_frequency, f);
return 0;
}
int cx25821_set_freq(struct cx25821_dev *dev, struct v4l2_frequency *f)
{
mutex_lock(&dev->lock);
dev->freq = f->frequency;
cx25821_call_all(dev, tuner, s_frequency, f);
/* When changing channels it is required to reset TVAUDIO */
msleep(10);
mutex_unlock(&dev->lock);
return 0;
}
int cx25821_vidioc_s_frequency(struct file *file, void *priv, struct v4l2_frequency *f)
{
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev;
int err;
if (fh) {
dev = fh->dev;
err = v4l2_prio_check(&dev->channels[fh->channel_id]
.prio, fh->prio);
if (0 != err)
return err;
} else {
printk(KERN_ERR "Invalid fh pointer!\n");
return -EINVAL;
}
return cx25821_set_freq(dev, f);
}
#endif
#ifdef CONFIG_VIDEO_ADV_DEBUG
int cx25821_vidioc_g_register(struct file *file, void *fh,
struct v4l2_dbg_register *reg)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)fh)->dev;
if (!v4l2_chip_match_host(&reg->match))
return -EINVAL;
cx25821_call_all(dev, core, g_register, reg);
return 0;
}
int cx25821_vidioc_s_register(struct file *file, void *fh,
struct v4l2_dbg_register *reg)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)fh)->dev;
if (!v4l2_chip_match_host(&reg->match))
return -EINVAL;
cx25821_call_all(dev, core, s_register, reg);
return 0;
}
#endif
#ifdef TUNER_FLAG
int cx25821_vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
if (unlikely(UNSET == dev->tuner_type))
return -EINVAL;
if (0 != t->index)
return -EINVAL;
strcpy(t->name, "Television");
t->type = V4L2_TUNER_ANALOG_TV;
t->capability = V4L2_TUNER_CAP_NORM;
t->rangehigh = 0xffffffffUL;
t->signal = 0xffff; /* LOCKED */
return 0;
}
int cx25821_vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct cx25821_fh *fh = priv;
int err;
if (fh) {
err = v4l2_prio_check(&dev->channels[fh->channel_id]
.prio, fh->prio);
if (0 != err)
return err;
}
dprintk(1, "%s()\n", __func__);
if (UNSET == dev->tuner_type)
return -EINVAL;
if (0 != t->index)
return -EINVAL;
return 0;
}
#endif
/*****************************************************************************/
static const struct v4l2_queryctrl no_ctl = {
.name = "42",
.flags = V4L2_CTRL_FLAG_DISABLED,
};
static struct v4l2_queryctrl cx25821_ctls[] = {
/* --- video --- */
{
.id = V4L2_CID_BRIGHTNESS,
.name = "Brightness",
.minimum = 0,
.maximum = 10000,
.step = 1,
.default_value = 6200,
.type = V4L2_CTRL_TYPE_INTEGER,
}, {
.id = V4L2_CID_CONTRAST,
.name = "Contrast",
.minimum = 0,
.maximum = 10000,
.step = 1,
.default_value = 5000,
.type = V4L2_CTRL_TYPE_INTEGER,
}, {
.id = V4L2_CID_SATURATION,
.name = "Saturation",
.minimum = 0,
.maximum = 10000,
.step = 1,
.default_value = 5000,
.type = V4L2_CTRL_TYPE_INTEGER,
}, {
.id = V4L2_CID_HUE,
.name = "Hue",
.minimum = 0,
.maximum = 10000,
.step = 1,
.default_value = 5000,
.type = V4L2_CTRL_TYPE_INTEGER,
}
};
static const int CX25821_CTLS = ARRAY_SIZE(cx25821_ctls);
static int cx25821_ctrl_query(struct v4l2_queryctrl *qctrl)
{
int i;
if (qctrl->id < V4L2_CID_BASE || qctrl->id >= V4L2_CID_LASTP1)
return -EINVAL;
for (i = 0; i < CX25821_CTLS; i++)
if (cx25821_ctls[i].id == qctrl->id)
break;
if (i == CX25821_CTLS) {
*qctrl = no_ctl;
return 0;
}
*qctrl = cx25821_ctls[i];
return 0;
}
int cx25821_vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qctrl)
{
return cx25821_ctrl_query(qctrl);
}
/* ------------------------------------------------------------------ */
/* VIDEO CTRL IOCTLS */
static const struct v4l2_queryctrl *ctrl_by_id(unsigned int id)
{
unsigned int i;
for (i = 0; i < CX25821_CTLS; i++)
if (cx25821_ctls[i].id == id)
return cx25821_ctls + i;
return NULL;
}
int cx25821_vidioc_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctl)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct cx25821_fh *fh = priv;
const struct v4l2_queryctrl *ctrl;
ctrl = ctrl_by_id(ctl->id);
if (NULL == ctrl)
return -EINVAL;
switch (ctl->id) {
case V4L2_CID_BRIGHTNESS:
ctl->value = dev->channels[fh->channel_id].ctl_bright;
break;
case V4L2_CID_HUE:
ctl->value = dev->channels[fh->channel_id].ctl_hue;
break;
case V4L2_CID_CONTRAST:
ctl->value = dev->channels[fh->channel_id].ctl_contrast;
break;
case V4L2_CID_SATURATION:
ctl->value = dev->channels[fh->channel_id].ctl_saturation;
break;
}
return 0;
}
int cx25821_set_control(struct cx25821_dev *dev,
struct v4l2_control *ctl, int chan_num)
{
int err;
const struct v4l2_queryctrl *ctrl;
err = -EINVAL;
ctrl = ctrl_by_id(ctl->id);
if (NULL == ctrl)
return err;
switch (ctrl->type) {
case V4L2_CTRL_TYPE_BOOLEAN:
case V4L2_CTRL_TYPE_MENU:
case V4L2_CTRL_TYPE_INTEGER:
if (ctl->value < ctrl->minimum)
ctl->value = ctrl->minimum;
if (ctl->value > ctrl->maximum)
ctl->value = ctrl->maximum;
break;
default:
/* nothing */ ;
};
switch (ctl->id) {
case V4L2_CID_BRIGHTNESS:
dev->channels[chan_num].ctl_bright = ctl->value;
medusa_set_brightness(dev, ctl->value, chan_num);
break;
case V4L2_CID_HUE:
dev->channels[chan_num].ctl_hue = ctl->value;
medusa_set_hue(dev, ctl->value, chan_num);
break;
case V4L2_CID_CONTRAST:
dev->channels[chan_num].ctl_contrast = ctl->value;
medusa_set_contrast(dev, ctl->value, chan_num);
break;
case V4L2_CID_SATURATION:
dev->channels[chan_num].ctl_saturation = ctl->value;
medusa_set_saturation(dev, ctl->value, chan_num);
break;
}
err = 0;
return err;
}
static void cx25821_init_controls(struct cx25821_dev *dev, int chan_num)
{
struct v4l2_control ctrl;
int i;
for (i = 0; i < CX25821_CTLS; i++) {
ctrl.id = cx25821_ctls[i].id;
ctrl.value = cx25821_ctls[i].default_value;
cx25821_set_control(dev, &ctrl, chan_num);
}
}
int cx25821_vidioc_cropcap(struct file *file, void *priv, struct v4l2_cropcap *cropcap)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
if (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
cropcap->bounds.top = cropcap->bounds.left = 0;
cropcap->bounds.width = 720;
cropcap->bounds.height = dev->tvnorm == V4L2_STD_PAL_BG ? 576 : 480;
cropcap->pixelaspect.numerator =
dev->tvnorm == V4L2_STD_PAL_BG ? 59 : 10;
cropcap->pixelaspect.denominator =
dev->tvnorm == V4L2_STD_PAL_BG ? 54 : 11;
cropcap->defrect = cropcap->bounds;
return 0;
}
int cx25821_vidioc_s_crop(struct file *file, void *priv, struct v4l2_crop *crop)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct cx25821_fh *fh = priv;
int err;
if (fh) {
err = v4l2_prio_check(&dev->channels[fh->channel_id].
prio, fh->prio);
if (0 != err)
return err;
}
/* cx25821_vidioc_s_crop not supported */
return -EINVAL;
}
int cx25821_vidioc_g_crop(struct file *file, void *priv, struct v4l2_crop *crop)
{
/* cx25821_vidioc_g_crop not supported */
return -EINVAL;
}
int cx25821_vidioc_querystd(struct file *file, void *priv, v4l2_std_id * norm)
{
/* medusa does not support video standard sensing of current input */
*norm = CX25821_NORMS;
return 0;
}
int cx25821_is_valid_width(u32 width, v4l2_std_id tvnorm)
{
if (tvnorm == V4L2_STD_PAL_BG) {
if (width == 352 || width == 720)
return 1;
else
return 0;
}
if (tvnorm == V4L2_STD_NTSC_M) {
if (width == 320 || width == 352 || width == 720)
return 1;
else
return 0;
}
return 0;
}
int cx25821_is_valid_height(u32 height, v4l2_std_id tvnorm)
{
if (tvnorm == V4L2_STD_PAL_BG) {
if (height == 576 || height == 288)
return 1;
else
return 0;
}
if (tvnorm == V4L2_STD_NTSC_M) {
if (height == 480 || height == 240)
return 1;
else
return 0;
}
return 0;
}
static long video_ioctl_upstream9(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct cx25821_fh *fh = file->private_data;
struct cx25821_dev *dev = fh->dev;
int command = 0;
struct upstream_user_struct *data_from_user;
data_from_user = (struct upstream_user_struct *)arg;
if (!data_from_user) {
printk
("cx25821 in %s(): Upstream data is INVALID. Returning.\n",
__func__);
return 0;
}
command = data_from_user->command;
if (command != UPSTREAM_START_VIDEO &&
command != UPSTREAM_STOP_VIDEO)
return 0;
dev->input_filename = data_from_user->input_filename;
dev->input_audiofilename = data_from_user->input_filename;
dev->vid_stdname = data_from_user->vid_stdname;
dev->pixel_format = data_from_user->pixel_format;
dev->channel_select = data_from_user->channel_select;
dev->command = data_from_user->command;
switch (command) {
case UPSTREAM_START_VIDEO:
cx25821_start_upstream_video_ch1(dev, data_from_user);
break;
case UPSTREAM_STOP_VIDEO:
cx25821_stop_upstream_video_ch1(dev);
break;
}
return 0;
}
static long video_ioctl_upstream10(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct cx25821_fh *fh = file->private_data;
struct cx25821_dev *dev = fh->dev;
int command = 0;
struct upstream_user_struct *data_from_user;
data_from_user = (struct upstream_user_struct *)arg;
if (!data_from_user) {
printk
("cx25821 in %s(): Upstream data is INVALID. Returning.\n",
__func__);
return 0;
}
command = data_from_user->command;
if (command != UPSTREAM_START_VIDEO &&
command != UPSTREAM_STOP_VIDEO)
return 0;
dev->input_filename_ch2 = data_from_user->input_filename;
dev->input_audiofilename = data_from_user->input_filename;
dev->vid_stdname_ch2 = data_from_user->vid_stdname;
dev->pixel_format_ch2 = data_from_user->pixel_format;
dev->channel_select_ch2 = data_from_user->channel_select;
dev->command_ch2 = data_from_user->command;
switch (command) {
case UPSTREAM_START_VIDEO:
cx25821_start_upstream_video_ch2(dev, data_from_user);
break;
case UPSTREAM_STOP_VIDEO:
cx25821_stop_upstream_video_ch2(dev);
break;
}
return 0;
}
static long video_ioctl_upstream11(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct cx25821_fh *fh = file->private_data;
struct cx25821_dev *dev = fh->dev;
int command = 0;
struct upstream_user_struct *data_from_user;
data_from_user = (struct upstream_user_struct *)arg;
if (!data_from_user) {
printk
("cx25821 in %s(): Upstream data is INVALID. Returning.\n",
__func__);
return 0;
}
command = data_from_user->command;
if (command != UPSTREAM_START_AUDIO &&
command != UPSTREAM_STOP_AUDIO)
return 0;
dev->input_filename = data_from_user->input_filename;
dev->input_audiofilename = data_from_user->input_filename;
dev->vid_stdname = data_from_user->vid_stdname;
dev->pixel_format = data_from_user->pixel_format;
dev->channel_select = data_from_user->channel_select;
dev->command = data_from_user->command;
switch (command) {
case UPSTREAM_START_AUDIO:
cx25821_start_upstream_audio(dev, data_from_user);
break;
case UPSTREAM_STOP_AUDIO:
cx25821_stop_upstream_audio(dev);
break;
}
return 0;
}
static long video_ioctl_set(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct cx25821_fh *fh = file->private_data;
struct cx25821_dev *dev = fh->dev;
struct downstream_user_struct *data_from_user;
int command;
int width = 720;
int selected_channel = 0, pix_format = 0, i = 0;
int cif_enable = 0, cif_width = 0;
u32 value = 0;
data_from_user = (struct downstream_user_struct *)arg;
if (!data_from_user) {
printk(
"cx25821 in %s(): User data is INVALID. Returning.\n",
__func__);
return 0;
}
command = data_from_user->command;
if (command != SET_VIDEO_STD && command != SET_PIXEL_FORMAT
&& command != ENABLE_CIF_RESOLUTION && command != REG_READ
&& command != REG_WRITE && command != MEDUSA_READ
&& command != MEDUSA_WRITE) {
return 0;
}
switch (command) {
case SET_VIDEO_STD:
dev->tvnorm =
!strcmp(data_from_user->vid_stdname,
"PAL") ? V4L2_STD_PAL_BG : V4L2_STD_NTSC_M;
medusa_set_videostandard(dev);
break;
case SET_PIXEL_FORMAT:
selected_channel = data_from_user->decoder_select;
pix_format = data_from_user->pixel_format;
if (!(selected_channel <= 7 && selected_channel >= 0)) {
selected_channel -= 4;
selected_channel = selected_channel % 8;
}
if (selected_channel >= 0)
cx25821_set_pixel_format(dev, selected_channel,
pix_format);
break;
case ENABLE_CIF_RESOLUTION:
selected_channel = data_from_user->decoder_select;
cif_enable = data_from_user->cif_resolution_enable;
cif_width = data_from_user->cif_width;
if (cif_enable) {
if (dev->tvnorm & V4L2_STD_PAL_BG
|| dev->tvnorm & V4L2_STD_PAL_DK)
width = 352;
else
width = (cif_width == 320
|| cif_width == 352) ? cif_width : 320;
}
if (!(selected_channel <= 7 && selected_channel >= 0)) {
selected_channel -= 4;
selected_channel = selected_channel % 8;
}
if (selected_channel <= 7 && selected_channel >= 0) {
dev->channels[selected_channel].
use_cif_resolution = cif_enable;
dev->channels[selected_channel].cif_width = width;
} else {
for (i = 0; i < VID_CHANNEL_NUM; i++) {
dev->channels[i].use_cif_resolution =
cif_enable;
dev->channels[i].cif_width = width;
}
}
medusa_set_resolution(dev, width, selected_channel);
break;
case REG_READ:
data_from_user->reg_data = cx_read(data_from_user->reg_address);
break;
case REG_WRITE:
cx_write(data_from_user->reg_address, data_from_user->reg_data);
break;
case MEDUSA_READ:
value =
cx25821_i2c_read(&dev->i2c_bus[0],
(u16) data_from_user->reg_address,
&data_from_user->reg_data);
break;
case MEDUSA_WRITE:
cx25821_i2c_write(&dev->i2c_bus[0],
(u16) data_from_user->reg_address,
data_from_user->reg_data);
break;
}
return 0;
}
static long cx25821_video_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
int ret = 0;
struct cx25821_fh *fh = file->private_data;
/* check to see if it's the video upstream */
if (fh->channel_id == SRAM_CH09) {
ret = video_ioctl_upstream9(file, cmd, arg);
return ret;
} else if (fh->channel_id == SRAM_CH10) {
ret = video_ioctl_upstream10(file, cmd, arg);
return ret;
} else if (fh->channel_id == SRAM_CH11) {
ret = video_ioctl_upstream11(file, cmd, arg);
ret = video_ioctl_set(file, cmd, arg);
return ret;
}
return video_ioctl2(file, cmd, arg);
}
/* exported stuff */
static const struct v4l2_file_operations video_fops = {
.owner = THIS_MODULE,
.open = video_open,
.release = video_release,
.read = video_read,
.poll = video_poll,
.mmap = cx25821_video_mmap,
.ioctl = cx25821_video_ioctl,
};
static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_querycap = cx25821_vidioc_querycap,
.vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
.vidioc_reqbufs = cx25821_vidioc_reqbufs,
.vidioc_querybuf = cx25821_vidioc_querybuf,
.vidioc_qbuf = cx25821_vidioc_qbuf,
.vidioc_dqbuf = vidioc_dqbuf,
#ifdef TUNER_FLAG
.vidioc_s_std = cx25821_vidioc_s_std,
.vidioc_querystd = cx25821_vidioc_querystd,
#endif
.vidioc_cropcap = cx25821_vidioc_cropcap,
.vidioc_s_crop = cx25821_vidioc_s_crop,
.vidioc_g_crop = cx25821_vidioc_g_crop,
.vidioc_enum_input = cx25821_vidioc_enum_input,
.vidioc_g_input = cx25821_vidioc_g_input,
.vidioc_s_input = cx25821_vidioc_s_input,
.vidioc_g_ctrl = cx25821_vidioc_g_ctrl,
.vidioc_s_ctrl = vidioc_s_ctrl,
.vidioc_queryctrl = cx25821_vidioc_queryctrl,
.vidioc_streamon = vidioc_streamon,
.vidioc_streamoff = vidioc_streamoff,
.vidioc_log_status = vidioc_log_status,
.vidioc_g_priority = cx25821_vidioc_g_priority,
.vidioc_s_priority = cx25821_vidioc_s_priority,
#ifdef CONFIG_VIDEO_V4L1_COMPAT
.vidiocgmbuf = cx25821_vidiocgmbuf,
#endif
#ifdef TUNER_FLAG
.vidioc_g_tuner = cx25821_vidioc_g_tuner,
.vidioc_s_tuner = cx25821_vidioc_s_tuner,
.vidioc_g_frequency = cx25821_vidioc_g_frequency,
.vidioc_s_frequency = cx25821_vidioc_s_frequency,
#endif
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = cx25821_vidioc_g_register,
.vidioc_s_register = cx25821_vidioc_s_register,
#endif
};
struct video_device cx25821_videoioctl_template = {
.name = "cx25821-videoioctl",
.fops = &video_fops,
.ioctl_ops = &video_ioctl_ops,
.tvnorms = CX25821_NORMS,
.current_norm = V4L2_STD_NTSC_M,
};