/*
*
* $Id$
*
* Copyright (C) 2005 Mike Isely <isely@pobox.com>
* Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
*
* 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
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/kernel.h>
#include <linux/version.h>
#include "pvrusb2-context.h"
#include "pvrusb2-hdw.h"
#include "pvrusb2.h"
#include "pvrusb2-debug.h"
#include "pvrusb2-v4l2.h"
#include "pvrusb2-ioread.h"
#include <linux/videodev2.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-common.h>
struct pvr2_v4l2_dev;
struct pvr2_v4l2_fh;
struct pvr2_v4l2;
struct pvr2_v4l2_dev {
struct video_device devbase; /* MUST be first! */
struct pvr2_v4l2 *v4lp;
struct pvr2_context_stream *stream;
enum pvr2_config config;
};
struct pvr2_v4l2_fh {
struct pvr2_channel channel;
struct pvr2_v4l2_dev *dev_info;
enum v4l2_priority prio;
struct pvr2_ioread *rhp;
struct file *file;
struct pvr2_v4l2 *vhead;
struct pvr2_v4l2_fh *vnext;
struct pvr2_v4l2_fh *vprev;
wait_queue_head_t wait_data;
int fw_mode_flag;
};
struct pvr2_v4l2 {
struct pvr2_channel channel;
struct pvr2_v4l2_fh *vfirst;
struct pvr2_v4l2_fh *vlast;
struct v4l2_prio_state prio;
/* streams */
struct pvr2_v4l2_dev *vdev;
};
static int video_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
module_param_array(video_nr, int, NULL, 0444);
MODULE_PARM_DESC(video_nr, "Offset for device's minor");
static struct v4l2_capability pvr_capability ={
.driver = "pvrusb2",
.card = "Hauppauge WinTV pvr-usb2",
.bus_info = "usb",
.version = KERNEL_VERSION(0,8,0),
.capabilities = (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE |
V4L2_CAP_TUNER | V4L2_CAP_AUDIO |
V4L2_CAP_READWRITE),
.reserved = {0,0,0,0}
};
static struct v4l2_tuner pvr_v4l2_tuners[]= {
{
.index = 0,
.name = "TV Tuner",
.type = V4L2_TUNER_ANALOG_TV,
.capability = (V4L2_TUNER_CAP_NORM |
V4L2_TUNER_CAP_STEREO |
V4L2_TUNER_CAP_LANG1 |
V4L2_TUNER_CAP_LANG2),
.rangelow = 0,
.rangehigh = 0,
.rxsubchans = V4L2_TUNER_SUB_STEREO,
.audmode = V4L2_TUNER_MODE_STEREO,
.signal = 0,
.afc = 0,
.reserved = {0,0,0,0}
}
};
static struct v4l2_fmtdesc pvr_fmtdesc [] = {
{
.index = 0,
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
.flags = V4L2_FMT_FLAG_COMPRESSED,
.description = "MPEG1/2",
// This should really be V4L2_PIX_FMT_MPEG, but xawtv
// breaks when I do that.
.pixelformat = 0, // V4L2_PIX_FMT_MPEG,
.reserved = { 0, 0, 0, 0 }
}
};
#define PVR_FORMAT_PIX 0
#define PVR_FORMAT_VBI 1
static struct v4l2_format pvr_format [] = {
[PVR_FORMAT_PIX] = {
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
.fmt = {
.pix = {
.width = 720,
.height = 576,
// This should really be V4L2_PIX_FMT_MPEG,
// but xawtv breaks when I do that.
.pixelformat = 0, // V4L2_PIX_FMT_MPEG,
.field = V4L2_FIELD_INTERLACED,
.bytesperline = 0, // doesn't make sense
// here
//FIXME : Don't know what to put here...
.sizeimage = (32*1024),
.colorspace = 0, // doesn't make sense here
.priv = 0
}
}
},
[PVR_FORMAT_VBI] = {
.type = V4L2_BUF_TYPE_VBI_CAPTURE,
.fmt = {
.vbi = {
.sampling_rate = 27000000,
.offset = 248,
.samples_per_line = 1443,
.sample_format = V4L2_PIX_FMT_GREY,
.start = { 0, 0 },
.count = { 0, 0 },
.flags = 0,
.reserved = { 0, 0 }
}
}
}
};
/*
* pvr_ioctl()
*
* This is part of Video 4 Linux API. The procedure handles ioctl() calls.
*
*/
static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
struct pvr2_v4l2_fh *fh = file->private_data;
struct pvr2_v4l2 *vp = fh->vhead;
struct pvr2_v4l2_dev *dev_info = fh->dev_info;
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
int ret = -EINVAL;
if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) {
v4l_print_ioctl(pvr2_hdw_get_driver_name(hdw),cmd);
}
if (!pvr2_hdw_dev_ok(hdw)) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"ioctl failed - bad or no context");
return -EFAULT;
}
/* check priority */
switch (cmd) {
case VIDIOC_S_CTRL:
case VIDIOC_S_STD:
case VIDIOC_S_INPUT:
case VIDIOC_S_TUNER:
case VIDIOC_S_FREQUENCY:
ret = v4l2_prio_check(&vp->prio, &fh->prio);
if (ret)
return ret;
}
switch (cmd) {
case VIDIOC_QUERYCAP:
{
struct v4l2_capability *cap = arg;
memcpy(cap, &pvr_capability, sizeof(struct v4l2_capability));
ret = 0;
break;
}
case VIDIOC_G_PRIORITY:
{
enum v4l2_priority *p = arg;
*p = v4l2_prio_max(&vp->prio);
ret = 0;
break;
}
case VIDIOC_S_PRIORITY:
{
enum v4l2_priority *prio = arg;
ret = v4l2_prio_change(&vp->prio, &fh->prio, *prio);
break;
}
case VIDIOC_ENUMSTD:
{
struct v4l2_standard *vs = (struct v4l2_standard *)arg;
int idx = vs->index;
ret = pvr2_hdw_get_stdenum_value(hdw,vs,idx+1);
break;
}
case VIDIOC_G_STD:
{
int val = 0;
ret = pvr2_ctrl_get_value(
pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDCUR),&val);
*(v4l2_std_id *)arg = val;
break;
}
case VIDIOC_S_STD:
{
ret = pvr2_ctrl_set_value(
pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDCUR),
*(v4l2_std_id *)arg);
break;
}
case VIDIOC_ENUMINPUT:
{
struct pvr2_ctrl *cptr;
struct v4l2_input *vi = (struct v4l2_input *)arg;
struct v4l2_input tmp;
unsigned int cnt;
cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT);
memset(&tmp,0,sizeof(tmp));
tmp.index = vi->index;
ret = 0;
switch (vi->index) {
case PVR2_CVAL_INPUT_TV:
case PVR2_CVAL_INPUT_RADIO:
tmp.type = V4L2_INPUT_TYPE_TUNER;
break;
case PVR2_CVAL_INPUT_SVIDEO:
case PVR2_CVAL_INPUT_COMPOSITE:
tmp.type = V4L2_INPUT_TYPE_CAMERA;
break;
default:
ret = -EINVAL;
break;
}
if (ret < 0) break;
cnt = 0;
pvr2_ctrl_get_valname(cptr,vi->index,
tmp.name,sizeof(tmp.name)-1,&cnt);
tmp.name[cnt] = 0;
/* Don't bother with audioset, since this driver currently
always switches the audio whenever the video is
switched. */
/* Handling std is a tougher problem. It doesn't make
sense in cases where a device might be multi-standard.
We could just copy out the current value for the
standard, but it can change over time. For now just
leave it zero. */
memcpy(vi, &tmp, sizeof(tmp));
ret = 0;
break;
}
case VIDIOC_G_INPUT:
{
struct pvr2_ctrl *cptr;
struct v4l2_input *vi = (struct v4l2_input *)arg;
int val;
cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT);
val = 0;
ret = pvr2_ctrl_get_value(cptr,&val);
vi->index = val;
break;
}
case VIDIOC_S_INPUT:
{
struct v4l2_input *vi = (struct v4l2_input *)arg;
ret = pvr2_ctrl_set_value(
pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT),
vi->index);
break;
}
case VIDIOC_ENUMAUDIO:
{
ret = -EINVAL;
break;
}
case VIDIOC_G_AUDIO:
{
ret = -EINVAL;
break;
}
case VIDIOC_S_AUDIO:
{
ret = -EINVAL;
break;
}
case VIDIOC_G_TUNER:
{
struct v4l2_tuner *vt = (struct v4l2_tuner *)arg;
unsigned int status_mask;
int val;
if (vt->index !=0) break;
status_mask = pvr2_hdw_get_signal_status(hdw);
memcpy(vt, &pvr_v4l2_tuners[vt->index],
sizeof(struct v4l2_tuner));
vt->signal = 0;
if (status_mask & PVR2_SIGNAL_OK) {
if (status_mask & PVR2_SIGNAL_STEREO) {
vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
} else {
vt->rxsubchans = V4L2_TUNER_SUB_MONO;
}
if (status_mask & PVR2_SIGNAL_SAP) {
vt->rxsubchans |= (V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2);
}
vt->signal = 65535;
}
val = 0;
ret = pvr2_ctrl_get_value(
pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_AUDIOMODE),
&val);
vt->audmode = val;
break;
}
case VIDIOC_S_TUNER:
{
struct v4l2_tuner *vt=(struct v4l2_tuner *)arg;
if (vt->index != 0)
break;
ret = pvr2_ctrl_set_value(
pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_AUDIOMODE),
vt->audmode);
}
case VIDIOC_S_FREQUENCY:
{
const struct v4l2_frequency *vf = (struct v4l2_frequency *)arg;
ret = pvr2_ctrl_set_value(
pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY),
vf->frequency * 62500);
break;
}
case VIDIOC_G_FREQUENCY:
{
struct v4l2_frequency *vf = (struct v4l2_frequency *)arg;
int val = 0;
ret = pvr2_ctrl_get_value(
pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY),
&val);
val /= 62500;
vf->frequency = val;
break;
}
case VIDIOC_ENUM_FMT:
{
struct v4l2_fmtdesc *fd = (struct v4l2_fmtdesc *)arg;
/* Only one format is supported : mpeg.*/
if (fd->index != 0)
break;
memcpy(fd, pvr_fmtdesc, sizeof(struct v4l2_fmtdesc));
ret = 0;
break;
}
case VIDIOC_G_FMT:
{
struct v4l2_format *vf = (struct v4l2_format *)arg;
int val;
switch(vf->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
memcpy(vf, &pvr_format[PVR_FORMAT_PIX],
sizeof(struct v4l2_format));
val = 0;
pvr2_ctrl_get_value(
pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_HRES),
&val);
vf->fmt.pix.width = val;
val = 0;
pvr2_ctrl_get_value(
pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_VRES),
&val);
vf->fmt.pix.height = val;
ret = 0;
break;
case V4L2_BUF_TYPE_VBI_CAPTURE:
// ????? Still need to figure out to do VBI correctly
ret = -EINVAL;
break;
default:
ret = -EINVAL;
break;
}
break;
}
case VIDIOC_TRY_FMT:
case VIDIOC_S_FMT:
{
struct v4l2_format *vf = (struct v4l2_format *)arg;
ret = 0;
switch(vf->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
int lmin,lmax;
struct pvr2_ctrl *hcp,*vcp;
int h = vf->fmt.pix.height;
int w = vf->fmt.pix.width;
hcp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_HRES);
vcp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_VRES);
lmin = pvr2_ctrl_get_min(hcp);
lmax = pvr2_ctrl_get_max(hcp);
if (w < lmin) {
w = lmin;
} else if (w > lmax) {
w = lmax;
}
lmin = pvr2_ctrl_get_min(vcp);
lmax = pvr2_ctrl_get_max(vcp);
if (h < lmin) {
h = lmin;
} else if (h > lmax) {
h = lmax;
}
memcpy(vf, &pvr_format[PVR_FORMAT_PIX],
sizeof(struct v4l2_format));
vf->fmt.pix.width = w;
vf->fmt.pix.height = h;
if (cmd == VIDIOC_S_FMT) {
pvr2_ctrl_set_value(hcp,vf->fmt.pix.width);
pvr2_ctrl_set_value(vcp,vf->fmt.pix.height);
}
} break;
case V4L2_BUF_TYPE_VBI_CAPTURE:
// ????? Still need to figure out to do VBI correctly
ret = -EINVAL;
break;
default:
ret = -EINVAL;
break;
}
break;
}
case VIDIOC_STREAMON:
{
ret = pvr2_hdw_set_stream_type(hdw,dev_info->config);
if (ret < 0) return ret;
ret = pvr2_hdw_set_streaming(hdw,!0);
break;
}
case VIDIOC_STREAMOFF:
{
ret = pvr2_hdw_set_streaming(hdw,0);
break;
}
case VIDIOC_QUERYCTRL:
{
struct pvr2_ctrl *cptr;
struct v4l2_queryctrl *vc = (struct v4l2_queryctrl *)arg;
ret = 0;
if (vc->id & V4L2_CTRL_FLAG_NEXT_CTRL) {
cptr = pvr2_hdw_get_ctrl_nextv4l(
hdw,(vc->id & ~V4L2_CTRL_FLAG_NEXT_CTRL));
if (cptr) vc->id = pvr2_ctrl_get_v4lid(cptr);
} else {
cptr = pvr2_hdw_get_ctrl_v4l(hdw,vc->id);
}
if (!cptr) {
pvr2_trace(PVR2_TRACE_V4LIOCTL,
"QUERYCTRL id=0x%x not implemented here",
vc->id);
ret = -EINVAL;
break;
}
pvr2_trace(PVR2_TRACE_V4LIOCTL,
"QUERYCTRL id=0x%x mapping name=%s (%s)",
vc->id,pvr2_ctrl_get_name(cptr),
pvr2_ctrl_get_desc(cptr));
strlcpy(vc->name,pvr2_ctrl_get_desc(cptr),sizeof(vc->name));
vc->flags = pvr2_ctrl_get_v4lflags(cptr);
vc->default_value = pvr2_ctrl_get_def(cptr);
switch (pvr2_ctrl_get_type(cptr)) {
case pvr2_ctl_enum:
vc->type = V4L2_CTRL_TYPE_MENU;
vc->minimum = 0;
vc->maximum = pvr2_ctrl_get_cnt(cptr) - 1;
vc->step = 1;
break;
case pvr2_ctl_bool:
vc->type = V4L2_CTRL_TYPE_BOOLEAN;
vc->minimum = 0;
vc->maximum = 1;
vc->step = 1;
break;
case pvr2_ctl_int:
vc->type = V4L2_CTRL_TYPE_INTEGER;
vc->minimum = pvr2_ctrl_get_min(cptr);
vc->maximum = pvr2_ctrl_get_max(cptr);
vc->step = 1;
break;
default:
pvr2_trace(PVR2_TRACE_V4LIOCTL,
"QUERYCTRL id=0x%x name=%s not mappable",
vc->id,pvr2_ctrl_get_name(cptr));
ret = -EINVAL;
break;
}
break;
}
case VIDIOC_QUERYMENU:
{
struct v4l2_querymenu *vm = (struct v4l2_querymenu *)arg;
unsigned int cnt = 0;
ret = pvr2_ctrl_get_valname(pvr2_hdw_get_ctrl_v4l(hdw,vm->id),
vm->index,
vm->name,sizeof(vm->name)-1,
&cnt);
vm->name[cnt] = 0;
break;
}
case VIDIOC_G_CTRL:
{
struct v4l2_control *vc = (struct v4l2_control *)arg;
int val = 0;
ret = pvr2_ctrl_get_value(pvr2_hdw_get_ctrl_v4l(hdw,vc->id),
&val);
vc->value = val;
break;
}
case VIDIOC_S_CTRL:
{
struct v4l2_control *vc = (struct v4l2_control *)arg;
ret = pvr2_ctrl_set_value(pvr2_hdw_get_ctrl_v4l(hdw,vc->id),
vc->value);
break;
}
case VIDIOC_G_EXT_CTRLS:
{
struct v4l2_ext_controls *ctls =
(struct v4l2_ext_controls *)arg;
struct v4l2_ext_control *ctrl;
unsigned int idx;
int val;
for (idx = 0; idx < ctls->count; idx++) {
ctrl = ctls->controls + idx;
ret = pvr2_ctrl_get_value(
pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id),&val);
if (ret) {
ctls->error_idx = idx;
break;
}
/* Ensure that if read as a 64 bit value, the user
will still get a hopefully sane value */
ctrl->value64 = 0;
ctrl->value = val;
}
break;
}
case VIDIOC_S_EXT_CTRLS:
{
struct v4l2_ext_controls *ctls =
(struct v4l2_ext_controls *)arg;
struct v4l2_ext_control *ctrl;
unsigned int idx;
for (idx = 0; idx < ctls->count; idx++) {
ctrl = ctls->controls + idx;
ret = pvr2_ctrl_set_value(
pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id),
ctrl->value);
if (ret) {
ctls->error_idx = idx;
break;
}
}
break;
}
case VIDIOC_TRY_EXT_CTRLS:
{
struct v4l2_ext_controls *ctls =
(struct v4l2_ext_controls *)arg;
struct v4l2_ext_control *ctrl;
struct pvr2_ctrl *pctl;
unsigned int idx;
/* For the moment just validate that the requested control
actually exists. */
for (idx = 0; idx < ctls->count; idx++) {
ctrl = ctls->controls + idx;
pctl = pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id);
if (!pctl) {
ret = -EINVAL;
ctls->error_idx = idx;
break;
}
}
break;
}
case VIDIOC_LOG_STATUS:
{
pvr2_hdw_trigger_module_log(hdw);
ret = 0;
break;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
case VIDIOC_INT_G_REGISTER:
case VIDIOC_INT_S_REGISTER:
{
u32 val;
struct v4l2_register *req = (struct v4l2_register *)arg;
if (cmd == VIDIOC_INT_S_REGISTER) val = req->val;
ret = pvr2_hdw_register_access(
hdw,req->i2c_id,req->reg,
cmd == VIDIOC_INT_S_REGISTER,&val);
if (cmd == VIDIOC_INT_G_REGISTER) req->val = val;
break;
}
#endif
default :
ret = v4l_compat_translate_ioctl(inode,file,cmd,
arg,pvr2_v4l2_do_ioctl);
}
pvr2_hdw_commit_ctl(hdw);
if (ret < 0) {
if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) {
pvr2_trace(PVR2_TRACE_V4LIOCTL,
"pvr2_v4l2_do_ioctl failure, ret=%d",ret);
} else {
if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) {
pvr2_trace(PVR2_TRACE_V4LIOCTL,
"pvr2_v4l2_do_ioctl failure, ret=%d"
" command was:",ret);
v4l_print_ioctl(pvr2_hdw_get_driver_name(hdw),
cmd);
}
}
} else {
pvr2_trace(PVR2_TRACE_V4LIOCTL,
"pvr2_v4l2_do_ioctl complete, ret=%d (0x%x)",
ret,ret);
}
return ret;
}
static void pvr2_v4l2_dev_destroy(struct pvr2_v4l2_dev *dip)
{
printk(KERN_INFO "pvrusb2: unregistering device video%d [%s]\n",
dip->devbase.minor,pvr2_config_get_name(dip->config));
/* Paranoia */
dip->v4lp = NULL;
dip->stream = NULL;
/* Actual deallocation happens later when all internal references
are gone. */
video_unregister_device(&dip->devbase);
}
static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp)
{
pvr2_hdw_v4l_store_minor_number(vp->channel.mc_head->hdw,-1);
pvr2_v4l2_dev_destroy(vp->vdev);
pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_v4l2 id=%p",vp);
pvr2_channel_done(&vp->channel);
kfree(vp);
}
static void pvr2_video_device_release(struct video_device *vdev)
{
struct pvr2_v4l2_dev *dev;
dev = container_of(vdev,struct pvr2_v4l2_dev,devbase);
kfree(dev);
}
static void pvr2_v4l2_internal_check(struct pvr2_channel *chp)
{
struct pvr2_v4l2 *vp;
vp = container_of(chp,struct pvr2_v4l2,channel);
if (!vp->channel.mc_head->disconnect_flag) return;
if (vp->vfirst) return;
pvr2_v4l2_destroy_no_lock(vp);
}
static int pvr2_v4l2_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
/* Temporary hack : use ivtv api until a v4l2 one is available. */
#define IVTV_IOC_G_CODEC 0xFFEE7703
#define IVTV_IOC_S_CODEC 0xFFEE7704
if (cmd == IVTV_IOC_G_CODEC || cmd == IVTV_IOC_S_CODEC) return 0;
return video_usercopy(inode, file, cmd, arg, pvr2_v4l2_do_ioctl);
}
static int pvr2_v4l2_release(struct inode *inode, struct file *file)
{
struct pvr2_v4l2_fh *fhp = file->private_data;
struct pvr2_v4l2 *vp = fhp->vhead;
struct pvr2_context *mp = fhp->vhead->channel.mc_head;
pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_release");
if (fhp->rhp) {
struct pvr2_stream *sp;
struct pvr2_hdw *hdw;
hdw = fhp->channel.mc_head->hdw;
pvr2_hdw_set_streaming(hdw,0);
sp = pvr2_ioread_get_stream(fhp->rhp);
if (sp) pvr2_stream_set_callback(sp,NULL,NULL);
pvr2_ioread_destroy(fhp->rhp);
fhp->rhp = NULL;
}
v4l2_prio_close(&vp->prio, &fhp->prio);
file->private_data = NULL;
pvr2_context_enter(mp); do {
if (fhp->vnext) {
fhp->vnext->vprev = fhp->vprev;
} else {
vp->vlast = fhp->vprev;
}
if (fhp->vprev) {
fhp->vprev->vnext = fhp->vnext;
} else {
vp->vfirst = fhp->vnext;
}
fhp->vnext = NULL;
fhp->vprev = NULL;
fhp->vhead = NULL;
pvr2_channel_done(&fhp->channel);
pvr2_trace(PVR2_TRACE_STRUCT,
"Destroying pvr_v4l2_fh id=%p",fhp);
kfree(fhp);
if (vp->channel.mc_head->disconnect_flag && !vp->vfirst) {
pvr2_v4l2_destroy_no_lock(vp);
}
} while (0); pvr2_context_exit(mp);
return 0;
}
static int pvr2_v4l2_open(struct inode *inode, struct file *file)
{
struct pvr2_v4l2_dev *dip; /* Our own context pointer */
struct pvr2_v4l2_fh *fhp;
struct pvr2_v4l2 *vp;
struct pvr2_hdw *hdw;
dip = container_of(video_devdata(file),struct pvr2_v4l2_dev,devbase);
vp = dip->v4lp;
hdw = vp->channel.hdw;
pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_open");
if (!pvr2_hdw_dev_ok(hdw)) {
pvr2_trace(PVR2_TRACE_OPEN_CLOSE,
"pvr2_v4l2_open: hardware not ready");
return -EIO;
}
fhp = kmalloc(sizeof(*fhp),GFP_KERNEL);
if (!fhp) {
return -ENOMEM;
}
memset(fhp,0,sizeof(*fhp));
init_waitqueue_head(&fhp->wait_data);
fhp->dev_info = dip;
pvr2_context_enter(vp->channel.mc_head); do {
pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp);
pvr2_channel_init(&fhp->channel,vp->channel.mc_head);
fhp->vnext = NULL;
fhp->vprev = vp->vlast;
if (vp->vlast) {
vp->vlast->vnext = fhp;
} else {
vp->vfirst = fhp;
}
vp->vlast = fhp;
fhp->vhead = vp;
} while (0); pvr2_context_exit(vp->channel.mc_head);
fhp->file = file;
file->private_data = fhp;
v4l2_prio_open(&vp->prio,&fhp->prio);
fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw);
return 0;
}
static void pvr2_v4l2_notify(struct pvr2_v4l2_fh *fhp)
{
wake_up(&fhp->wait_data);
}
static int pvr2_v4l2_iosetup(struct pvr2_v4l2_fh *fh)
{
int ret;
struct pvr2_stream *sp;
struct pvr2_hdw *hdw;
if (fh->rhp) return 0;
/* First read() attempt. Try to claim the stream and start
it... */
if ((ret = pvr2_channel_claim_stream(&fh->channel,
fh->dev_info->stream)) != 0) {
/* Someone else must already have it */
return ret;
}
fh->rhp = pvr2_channel_create_mpeg_stream(fh->dev_info->stream);
if (!fh->rhp) {
pvr2_channel_claim_stream(&fh->channel,NULL);
return -ENOMEM;
}
hdw = fh->channel.mc_head->hdw;
sp = fh->dev_info->stream->stream;
pvr2_stream_set_callback(sp,(pvr2_stream_callback)pvr2_v4l2_notify,fh);
pvr2_hdw_set_stream_type(hdw,fh->dev_info->config);
pvr2_hdw_set_streaming(hdw,!0);
ret = pvr2_ioread_set_enabled(fh->rhp,!0);
return ret;
}
static ssize_t pvr2_v4l2_read(struct file *file,
char __user *buff, size_t count, loff_t *ppos)
{
struct pvr2_v4l2_fh *fh = file->private_data;
int ret;
if (fh->fw_mode_flag) {
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
char *tbuf;
int c1,c2;
int tcnt = 0;
unsigned int offs = *ppos;
tbuf = kmalloc(PAGE_SIZE,GFP_KERNEL);
if (!tbuf) return -ENOMEM;
while (count) {
c1 = count;
if (c1 > PAGE_SIZE) c1 = PAGE_SIZE;
c2 = pvr2_hdw_cpufw_get(hdw,offs,tbuf,c1);
if (c2 < 0) {
tcnt = c2;
break;
}
if (!c2) break;
if (copy_to_user(buff,tbuf,c2)) {
tcnt = -EFAULT;
break;
}
offs += c2;
tcnt += c2;
buff += c2;
count -= c2;
*ppos += c2;
}
kfree(tbuf);
return tcnt;
}
if (!fh->rhp) {
ret = pvr2_v4l2_iosetup(fh);
if (ret) {
return ret;
}
}
for (;;) {
ret = pvr2_ioread_read(fh->rhp,buff,count);
if (ret >= 0) break;
if (ret != -EAGAIN) break;
if (file->f_flags & O_NONBLOCK) break;
/* Doing blocking I/O. Wait here. */
ret = wait_event_interruptible(
fh->wait_data,
pvr2_ioread_avail(fh->rhp) >= 0);
if (ret < 0) break;
}
return ret;
}
static unsigned int pvr2_v4l2_poll(struct file *file, poll_table *wait)
{
unsigned int mask = 0;
struct pvr2_v4l2_fh *fh = file->private_data;
int ret;
if (fh->fw_mode_flag) {
mask |= POLLIN | POLLRDNORM;
return mask;
}
if (!fh->rhp) {
ret = pvr2_v4l2_iosetup(fh);
if (ret) return POLLERR;
}
poll_wait(file,&fh->wait_data,wait);
if (pvr2_ioread_avail(fh->rhp) >= 0) {
mask |= POLLIN | POLLRDNORM;
}
return mask;
}
static struct file_operations vdev_fops = {
.owner = THIS_MODULE,
.open = pvr2_v4l2_open,
.release = pvr2_v4l2_release,
.read = pvr2_v4l2_read,
.ioctl = pvr2_v4l2_ioctl,
.llseek = no_llseek,
.poll = pvr2_v4l2_poll,
};
#define VID_HARDWARE_PVRUSB2 38 /* FIXME : need a good value */
static struct video_device vdev_template = {
.owner = THIS_MODULE,
.type = VID_TYPE_CAPTURE | VID_TYPE_TUNER,
.type2 = (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE
| V4L2_CAP_TUNER | V4L2_CAP_AUDIO
| V4L2_CAP_READWRITE),
.hardware = VID_HARDWARE_PVRUSB2,
.fops = &vdev_fops,
};
static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,
struct pvr2_v4l2 *vp,
enum pvr2_config cfg)
{
int mindevnum;
int unit_number;
int v4l_type;
dip->v4lp = vp;
dip->config = cfg;
switch (cfg) {
case pvr2_config_mpeg:
v4l_type = VFL_TYPE_GRABBER;
dip->stream = &vp->channel.mc_head->video_stream;
break;
case pvr2_config_vbi:
v4l_type = VFL_TYPE_VBI;
break;
case pvr2_config_radio:
v4l_type = VFL_TYPE_RADIO;
break;
default:
/* Bail out (this should be impossible) */
err("Failed to set up pvrusb2 v4l dev"
" due to unrecognized config");
return;
}
if (!dip->stream) {
err("Failed to set up pvrusb2 v4l dev"
" due to missing stream instance");
return;
}
memcpy(&dip->devbase,&vdev_template,sizeof(vdev_template));
dip->devbase.release = pvr2_video_device_release;
mindevnum = -1;
unit_number = pvr2_hdw_get_unit_number(vp->channel.mc_head->hdw);
if ((unit_number >= 0) && (unit_number < PVR_NUM)) {
mindevnum = video_nr[unit_number];
}
if ((video_register_device(&dip->devbase, v4l_type, mindevnum) < 0) &&
(video_register_device(&dip->devbase, v4l_type, -1) < 0)) {
err("Failed to register pvrusb2 v4l video device");
} else {
printk(KERN_INFO "pvrusb2: registered device video%d [%s]\n",
dip->devbase.minor,pvr2_config_get_name(dip->config));
}
pvr2_hdw_v4l_store_minor_number(vp->channel.mc_head->hdw,
dip->devbase.minor);
}
struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp)
{
struct pvr2_v4l2 *vp;
vp = kmalloc(sizeof(*vp),GFP_KERNEL);
if (!vp) return vp;
memset(vp,0,sizeof(*vp));
vp->vdev = kmalloc(sizeof(*vp->vdev),GFP_KERNEL);
if (!vp->vdev) {
kfree(vp);
return NULL;
}
memset(vp->vdev,0,sizeof(*vp->vdev));
pvr2_channel_init(&vp->channel,mnp);
pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_v4l2 id=%p",vp);
vp->channel.check_func = pvr2_v4l2_internal_check;
/* register streams */
pvr2_v4l2_dev_init(vp->vdev,vp,pvr2_config_mpeg);
return vp;
}
/*
Stuff for Emacs to see, in order to encourage consistent editing style:
*** Local Variables: ***
*** mode: c ***
*** fill-column: 75 ***
*** tab-width: 8 ***
*** c-basic-offset: 8 ***
*** End: ***
*/
