diff options
Diffstat (limited to 'drivers/media/usb/pvrusb2/pvrusb2-v4l2.c')
| -rw-r--r-- | drivers/media/usb/pvrusb2/pvrusb2-v4l2.c | 1288 |
1 files changed, 1288 insertions, 0 deletions
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c new file mode 100644 index 000000000..c04ab7258 --- /dev/null +++ b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c @@ -0,0 +1,1288 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * + * Copyright (C) 2005 Mike Isely <isely@pobox.com> + * Copyright (C) 2004 Aurelien Alleaume <slts@free.fr> + */ + +#include <linux/kernel.h> +#include <linux/slab.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 <linux/module.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-device.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.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; + /* Information about this device: */ + enum pvr2_config config; /* Expected stream format */ + int v4l_type; /* V4L defined type for this device node */ + enum pvr2_v4l_type minor_type; /* pvr2-understood minor device type */ +}; + +struct pvr2_v4l2_fh { + struct v4l2_fh fh; + struct pvr2_channel channel; + struct pvr2_v4l2_dev *pdi; + struct pvr2_ioread *rhp; + struct file *file; + wait_queue_head_t wait_data; + int fw_mode_flag; + /* Map contiguous ordinal value to input id */ + unsigned char *input_map; + unsigned int input_cnt; +}; + +struct pvr2_v4l2 { + struct pvr2_channel channel; + + /* streams - Note that these must be separately, individually, + * allocated pointers. This is because the v4l core is going to + * manage their deletion - separately, individually... */ + struct pvr2_v4l2_dev *dev_video; + struct pvr2_v4l2_dev *dev_radio; +}; + +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 video dev minor"); +static int radio_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1}; +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(radio_nr, "Offset for device's radio dev minor"); +static int vbi_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1}; +module_param_array(vbi_nr, int, NULL, 0444); +MODULE_PARM_DESC(vbi_nr, "Offset for device's vbi dev minor"); + +#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, + .pixelformat = V4L2_PIX_FMT_MPEG, + .field = V4L2_FIELD_INTERLACED, + /* FIXME : Don't know what to put here... */ + .sizeimage = 32 * 1024, + } + } + }, + [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, + } + } + } +}; + + + +/* + * This is part of Video 4 Linux API. These procedures handle ioctl() calls. + */ +static int pvr2_querycap(struct file *file, void *priv, struct v4l2_capability *cap) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + + strscpy(cap->driver, "pvrusb2", sizeof(cap->driver)); + strscpy(cap->bus_info, pvr2_hdw_get_bus_info(hdw), + sizeof(cap->bus_info)); + strscpy(cap->card, pvr2_hdw_get_desc(hdw), sizeof(cap->card)); + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER | + V4L2_CAP_AUDIO | V4L2_CAP_RADIO | + V4L2_CAP_READWRITE | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int pvr2_g_std(struct file *file, void *priv, v4l2_std_id *std) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int val = 0; + int ret; + + ret = pvr2_ctrl_get_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDCUR), &val); + *std = val; + return ret; +} + +static int pvr2_s_std(struct file *file, void *priv, v4l2_std_id std) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int ret; + + ret = pvr2_ctrl_set_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDCUR), std); + pvr2_hdw_commit_ctl(hdw); + return ret; +} + +static int pvr2_querystd(struct file *file, void *priv, v4l2_std_id *std) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int val = 0; + int ret; + + ret = pvr2_ctrl_get_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDDETECT), &val); + *std = val; + return ret; +} + +static int pvr2_enum_input(struct file *file, void *priv, struct v4l2_input *vi) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + struct pvr2_ctrl *cptr; + struct v4l2_input tmp; + unsigned int cnt; + int val; + + cptr = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT); + + memset(&tmp, 0, sizeof(tmp)); + tmp.index = vi->index; + if (vi->index >= fh->input_cnt) + return -EINVAL; + val = fh->input_map[vi->index]; + switch (val) { + case PVR2_CVAL_INPUT_TV: + case PVR2_CVAL_INPUT_DTV: + 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: + return -EINVAL; + } + + cnt = 0; + pvr2_ctrl_get_valname(cptr, val, + 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. */ + *vi = tmp; + return 0; +} + +static int pvr2_g_input(struct file *file, void *priv, unsigned int *i) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + unsigned int idx; + struct pvr2_ctrl *cptr; + int val; + int ret; + + cptr = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT); + val = 0; + ret = pvr2_ctrl_get_value(cptr, &val); + *i = 0; + for (idx = 0; idx < fh->input_cnt; idx++) { + if (fh->input_map[idx] == val) { + *i = idx; + break; + } + } + return ret; +} + +static int pvr2_s_input(struct file *file, void *priv, unsigned int inp) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int ret; + + if (inp >= fh->input_cnt) + return -EINVAL; + ret = pvr2_ctrl_set_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT), + fh->input_map[inp]); + pvr2_hdw_commit_ctl(hdw); + return ret; +} + +static int pvr2_enumaudio(struct file *file, void *priv, struct v4l2_audio *vin) +{ + /* pkt: FIXME: We are returning one "fake" input here + which could very well be called "whatever_we_like". + This is for apps that want to see an audio input + just to feel comfortable, as well as to test if + it can do stereo or sth. There is actually no guarantee + that the actual audio input cannot change behind the app's + back, but most applications should not mind that either. + + Hopefully, mplayer people will work with us on this (this + whole mess is to support mplayer pvr://), or Hans will come + up with a more standard way to say "we have inputs but we + don 't want you to change them independent of video" which + will sort this mess. + */ + + if (vin->index > 0) + return -EINVAL; + strscpy(vin->name, "PVRUSB2 Audio", sizeof(vin->name)); + vin->capability = V4L2_AUDCAP_STEREO; + return 0; +} + +static int pvr2_g_audio(struct file *file, void *priv, struct v4l2_audio *vin) +{ + /* pkt: FIXME: see above comment (VIDIOC_ENUMAUDIO) */ + vin->index = 0; + strscpy(vin->name, "PVRUSB2 Audio", sizeof(vin->name)); + vin->capability = V4L2_AUDCAP_STEREO; + return 0; +} + +static int pvr2_s_audio(struct file *file, void *priv, const struct v4l2_audio *vout) +{ + if (vout->index) + return -EINVAL; + return 0; +} + +static int pvr2_g_tuner(struct file *file, void *priv, struct v4l2_tuner *vt) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + + if (vt->index != 0) + return -EINVAL; /* Only answer for the 1st tuner */ + + pvr2_hdw_execute_tuner_poll(hdw); + return pvr2_hdw_get_tuner_status(hdw, vt); +} + +static int pvr2_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *vt) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int ret; + + if (vt->index != 0) + return -EINVAL; + + ret = pvr2_ctrl_set_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_AUDIOMODE), + vt->audmode); + pvr2_hdw_commit_ctl(hdw); + return ret; +} + +static int pvr2_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *vf) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + unsigned long fv; + struct v4l2_tuner vt; + int cur_input; + struct pvr2_ctrl *ctrlp; + int ret; + + ret = pvr2_hdw_get_tuner_status(hdw, &vt); + if (ret != 0) + return ret; + ctrlp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT); + ret = pvr2_ctrl_get_value(ctrlp, &cur_input); + if (ret != 0) + return ret; + if (vf->type == V4L2_TUNER_RADIO) { + if (cur_input != PVR2_CVAL_INPUT_RADIO) + pvr2_ctrl_set_value(ctrlp, PVR2_CVAL_INPUT_RADIO); + } else { + if (cur_input == PVR2_CVAL_INPUT_RADIO) + pvr2_ctrl_set_value(ctrlp, PVR2_CVAL_INPUT_TV); + } + fv = vf->frequency; + if (vt.capability & V4L2_TUNER_CAP_LOW) + fv = (fv * 125) / 2; + else + fv = fv * 62500; + ret = pvr2_ctrl_set_value( + pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY),fv); + pvr2_hdw_commit_ctl(hdw); + return ret; +} + +static int pvr2_g_frequency(struct file *file, void *priv, struct v4l2_frequency *vf) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int val = 0; + int cur_input; + struct v4l2_tuner vt; + int ret; + + ret = pvr2_hdw_get_tuner_status(hdw, &vt); + if (ret != 0) + return ret; + ret = pvr2_ctrl_get_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_FREQUENCY), + &val); + if (ret != 0) + return ret; + pvr2_ctrl_get_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT), + &cur_input); + if (cur_input == PVR2_CVAL_INPUT_RADIO) + vf->type = V4L2_TUNER_RADIO; + else + vf->type = V4L2_TUNER_ANALOG_TV; + if (vt.capability & V4L2_TUNER_CAP_LOW) + val = (val * 2) / 125; + else + val /= 62500; + vf->frequency = val; + return 0; +} + +static int pvr2_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *fd) +{ + /* Only one format is supported: MPEG. */ + if (fd->index) + return -EINVAL; + + fd->pixelformat = V4L2_PIX_FMT_MPEG; + return 0; +} + +static int pvr2_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int val; + + 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; + return 0; +} + +static int pvr2_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int lmin, lmax, ldef; + 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); + pvr2_ctrl_get_def(hcp, &ldef); + if (w == -1) + w = ldef; + else if (w < lmin) + w = lmin; + else if (w > lmax) + w = lmax; + lmin = pvr2_ctrl_get_min(vcp); + lmax = pvr2_ctrl_get_max(vcp); + pvr2_ctrl_get_def(vcp, &ldef); + if (h == -1) + h = ldef; + else 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; + return 0; +} + +static int pvr2_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + struct pvr2_ctrl *hcp, *vcp; + int ret = pvr2_try_fmt_vid_cap(file, fh, vf); + + if (ret) + return ret; + hcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_HRES); + vcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_VRES); + pvr2_ctrl_set_value(hcp, vf->fmt.pix.width); + pvr2_ctrl_set_value(vcp, vf->fmt.pix.height); + pvr2_hdw_commit_ctl(hdw); + return 0; +} + +static int pvr2_streamon(struct file *file, void *priv, enum v4l2_buf_type i) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + struct pvr2_v4l2_dev *pdi = fh->pdi; + int ret; + + if (!fh->pdi->stream) { + /* No stream defined for this node. This means + that we're not currently allowed to stream from + this node. */ + return -EPERM; + } + ret = pvr2_hdw_set_stream_type(hdw, pdi->config); + if (ret < 0) + return ret; + return pvr2_hdw_set_streaming(hdw, !0); +} + +static int pvr2_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + + if (!fh->pdi->stream) { + /* No stream defined for this node. This means + that we're not currently allowed to stream from + this node. */ + return -EPERM; + } + return pvr2_hdw_set_streaming(hdw, 0); +} + +static int pvr2_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *vc) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + struct pvr2_ctrl *cptr; + int val; + + 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); + return -EINVAL; + } + + 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)); + strscpy(vc->name, pvr2_ctrl_get_desc(cptr), sizeof(vc->name)); + vc->flags = pvr2_ctrl_get_v4lflags(cptr); + pvr2_ctrl_get_def(cptr, &val); + vc->default_value = val; + 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)); + return -EINVAL; + } + return 0; +} + +static int pvr2_querymenu(struct file *file, void *priv, struct v4l2_querymenu *vm) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + unsigned int cnt = 0; + int ret; + + 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; + return ret; +} + +static int pvr2_g_ctrl(struct file *file, void *priv, struct v4l2_control *vc) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int val = 0; + int ret; + + ret = pvr2_ctrl_get_value(pvr2_hdw_get_ctrl_v4l(hdw, vc->id), + &val); + vc->value = val; + return ret; +} + +static int pvr2_s_ctrl(struct file *file, void *priv, struct v4l2_control *vc) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int ret; + + ret = pvr2_ctrl_set_value(pvr2_hdw_get_ctrl_v4l(hdw, vc->id), + vc->value); + pvr2_hdw_commit_ctl(hdw); + return ret; +} + +static int pvr2_g_ext_ctrls(struct file *file, void *priv, + struct v4l2_ext_controls *ctls) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + struct v4l2_ext_control *ctrl; + struct pvr2_ctrl *cptr; + unsigned int idx; + int val; + int ret; + + ret = 0; + for (idx = 0; idx < ctls->count; idx++) { + ctrl = ctls->controls + idx; + cptr = pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id); + if (cptr) { + if (ctls->which == V4L2_CTRL_WHICH_DEF_VAL) + pvr2_ctrl_get_def(cptr, &val); + else + ret = pvr2_ctrl_get_value(cptr, &val); + } else + ret = -EINVAL; + + if (ret) { + ctls->error_idx = idx; + return ret; + } + /* Ensure that if read as a 64 bit value, the user + will still get a hopefully sane value */ + ctrl->value64 = 0; + ctrl->value = val; + } + return 0; +} + +static int pvr2_s_ext_ctrls(struct file *file, void *priv, + struct v4l2_ext_controls *ctls) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + struct v4l2_ext_control *ctrl; + unsigned int idx; + int ret; + + ret = 0; + 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; + goto commit; + } + } +commit: + pvr2_hdw_commit_ctl(hdw); + return ret; +} + +static int pvr2_try_ext_ctrls(struct file *file, void *priv, + struct v4l2_ext_controls *ctls) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + 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) { + ctls->error_idx = idx; + return -EINVAL; + } + } + return 0; +} + +static int pvr2_g_pixelaspect(struct file *file, void *priv, + int type, struct v4l2_fract *f) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + struct v4l2_cropcap cap = { .type = type }; + int ret; + + if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + ret = pvr2_hdw_get_cropcap(hdw, &cap); + if (!ret) + *f = cap.pixelaspect; + return ret; +} + +static int pvr2_g_selection(struct file *file, void *priv, + struct v4l2_selection *sel) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + struct v4l2_cropcap cap; + int val = 0; + int ret; + + if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + + switch (sel->target) { + case V4L2_SEL_TGT_CROP: + ret = pvr2_ctrl_get_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPL), &val); + if (ret != 0) + return -EINVAL; + sel->r.left = val; + ret = pvr2_ctrl_get_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPT), &val); + if (ret != 0) + return -EINVAL; + sel->r.top = val; + ret = pvr2_ctrl_get_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPW), &val); + if (ret != 0) + return -EINVAL; + sel->r.width = val; + ret = pvr2_ctrl_get_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPH), &val); + if (ret != 0) + return -EINVAL; + sel->r.height = val; + break; + case V4L2_SEL_TGT_CROP_DEFAULT: + ret = pvr2_hdw_get_cropcap(hdw, &cap); + sel->r = cap.defrect; + break; + case V4L2_SEL_TGT_CROP_BOUNDS: + ret = pvr2_hdw_get_cropcap(hdw, &cap); + sel->r = cap.bounds; + break; + default: + return -EINVAL; + } + return ret; +} + +static int pvr2_s_selection(struct file *file, void *priv, + struct v4l2_selection *sel) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + int ret; + + if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || + sel->target != V4L2_SEL_TGT_CROP) + return -EINVAL; + ret = pvr2_ctrl_set_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPL), + sel->r.left); + if (ret != 0) + goto commit; + ret = pvr2_ctrl_set_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPT), + sel->r.top); + if (ret != 0) + goto commit; + ret = pvr2_ctrl_set_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPW), + sel->r.width); + if (ret != 0) + goto commit; + ret = pvr2_ctrl_set_value( + pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPH), + sel->r.height); +commit: + pvr2_hdw_commit_ctl(hdw); + return ret; +} + +static int pvr2_log_status(struct file *file, void *priv) +{ + struct pvr2_v4l2_fh *fh = file->private_data; + struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; + + pvr2_hdw_trigger_module_log(hdw); + return 0; +} + +static const struct v4l2_ioctl_ops pvr2_ioctl_ops = { + .vidioc_querycap = pvr2_querycap, + .vidioc_s_audio = pvr2_s_audio, + .vidioc_g_audio = pvr2_g_audio, + .vidioc_enumaudio = pvr2_enumaudio, + .vidioc_enum_input = pvr2_enum_input, + .vidioc_g_pixelaspect = pvr2_g_pixelaspect, + .vidioc_s_selection = pvr2_s_selection, + .vidioc_g_selection = pvr2_g_selection, + .vidioc_g_input = pvr2_g_input, + .vidioc_s_input = pvr2_s_input, + .vidioc_g_frequency = pvr2_g_frequency, + .vidioc_s_frequency = pvr2_s_frequency, + .vidioc_s_tuner = pvr2_s_tuner, + .vidioc_g_tuner = pvr2_g_tuner, + .vidioc_g_std = pvr2_g_std, + .vidioc_s_std = pvr2_s_std, + .vidioc_querystd = pvr2_querystd, + .vidioc_log_status = pvr2_log_status, + .vidioc_enum_fmt_vid_cap = pvr2_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = pvr2_g_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = pvr2_s_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = pvr2_try_fmt_vid_cap, + .vidioc_streamon = pvr2_streamon, + .vidioc_streamoff = pvr2_streamoff, + .vidioc_queryctrl = pvr2_queryctrl, + .vidioc_querymenu = pvr2_querymenu, + .vidioc_g_ctrl = pvr2_g_ctrl, + .vidioc_s_ctrl = pvr2_s_ctrl, + .vidioc_g_ext_ctrls = pvr2_g_ext_ctrls, + .vidioc_s_ext_ctrls = pvr2_s_ext_ctrls, + .vidioc_try_ext_ctrls = pvr2_try_ext_ctrls, +}; + +static void pvr2_v4l2_dev_destroy(struct pvr2_v4l2_dev *dip) +{ + struct pvr2_hdw *hdw = dip->v4lp->channel.mc_head->hdw; + enum pvr2_config cfg = dip->config; + char msg[80]; + unsigned int mcnt; + + /* Construct the unregistration message *before* we actually + perform the unregistration step. By doing it this way we don't + have to worry about potentially touching deleted resources. */ + mcnt = scnprintf(msg, sizeof(msg) - 1, + "pvrusb2: unregistered device %s [%s]", + video_device_node_name(&dip->devbase), + pvr2_config_get_name(cfg)); + msg[mcnt] = 0; + + pvr2_hdw_v4l_store_minor_number(hdw,dip->minor_type,-1); + + /* Paranoia */ + dip->v4lp = NULL; + dip->stream = NULL; + + /* Actual deallocation happens later when all internal references + are gone. */ + video_unregister_device(&dip->devbase); + + pr_info("%s\n", msg); + +} + + +static void pvr2_v4l2_dev_disassociate_parent(struct pvr2_v4l2_dev *dip) +{ + if (!dip) return; + if (!dip->devbase.v4l2_dev->dev) return; + dip->devbase.v4l2_dev->dev = NULL; + device_move(&dip->devbase.dev, NULL, DPM_ORDER_NONE); +} + + +static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp) +{ + if (vp->dev_video) { + pvr2_v4l2_dev_destroy(vp->dev_video); + vp->dev_video = NULL; + } + if (vp->dev_radio) { + pvr2_v4l2_dev_destroy(vp->dev_radio); + vp->dev_radio = NULL; + } + + 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; + pvr2_v4l2_dev_disassociate_parent(vp->dev_video); + pvr2_v4l2_dev_disassociate_parent(vp->dev_radio); + if (!list_empty(&vp->dev_video->devbase.fh_list) || + (vp->dev_radio && + !list_empty(&vp->dev_radio->devbase.fh_list))) { + pvr2_trace(PVR2_TRACE_STRUCT, + "pvr2_v4l2 internal_check exit-empty id=%p", vp); + return; + } + pvr2_v4l2_destroy_no_lock(vp); +} + + +static int pvr2_v4l2_release(struct file *file) +{ + struct pvr2_v4l2_fh *fhp = file->private_data; + struct pvr2_v4l2 *vp = fhp->pdi->v4lp; + struct pvr2_hdw *hdw = fhp->channel.mc_head->hdw; + + pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_release"); + + if (fhp->rhp) { + struct pvr2_stream *sp; + 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_fh_del(&fhp->fh); + v4l2_fh_exit(&fhp->fh); + file->private_data = NULL; + + pvr2_channel_done(&fhp->channel); + pvr2_trace(PVR2_TRACE_STRUCT, + "Destroying pvr_v4l2_fh id=%p",fhp); + if (fhp->input_map) { + kfree(fhp->input_map); + fhp->input_map = NULL; + } + kfree(fhp); + if (vp->channel.mc_head->disconnect_flag && + list_empty(&vp->dev_video->devbase.fh_list) && + (!vp->dev_radio || + list_empty(&vp->dev_radio->devbase.fh_list))) { + pvr2_v4l2_destroy_no_lock(vp); + } + return 0; +} + + +static int pvr2_v4l2_open(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; + unsigned int input_mask = 0; + unsigned int input_cnt,idx; + int ret = 0; + + 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 = kzalloc(sizeof(*fhp),GFP_KERNEL); + if (!fhp) { + return -ENOMEM; + } + + v4l2_fh_init(&fhp->fh, &dip->devbase); + init_waitqueue_head(&fhp->wait_data); + fhp->pdi = dip; + + pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp); + pvr2_channel_init(&fhp->channel,vp->channel.mc_head); + + if (dip->v4l_type == VFL_TYPE_RADIO) { + /* Opening device as a radio, legal input selection subset + is just the radio. */ + input_mask = (1 << PVR2_CVAL_INPUT_RADIO); + } else { + /* Opening the main V4L device, legal input selection + subset includes all analog inputs. */ + input_mask = ((1 << PVR2_CVAL_INPUT_RADIO) | + (1 << PVR2_CVAL_INPUT_TV) | + (1 << PVR2_CVAL_INPUT_COMPOSITE) | + (1 << PVR2_CVAL_INPUT_SVIDEO)); + } + ret = pvr2_channel_limit_inputs(&fhp->channel,input_mask); + if (ret) { + pvr2_channel_done(&fhp->channel); + pvr2_trace(PVR2_TRACE_STRUCT, + "Destroying pvr_v4l2_fh id=%p (input mask error)", + fhp); + v4l2_fh_exit(&fhp->fh); + kfree(fhp); + return ret; + } + + input_mask &= pvr2_hdw_get_input_available(hdw); + input_cnt = 0; + for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) { + if (input_mask & (1UL << idx)) input_cnt++; + } + fhp->input_cnt = input_cnt; + fhp->input_map = kzalloc(input_cnt,GFP_KERNEL); + if (!fhp->input_map) { + pvr2_channel_done(&fhp->channel); + pvr2_trace(PVR2_TRACE_STRUCT, + "Destroying pvr_v4l2_fh id=%p (input map failure)", + fhp); + v4l2_fh_exit(&fhp->fh); + kfree(fhp); + return -ENOMEM; + } + input_cnt = 0; + for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) { + if (!(input_mask & (1UL << idx))) continue; + fhp->input_map[input_cnt++] = idx; + } + + fhp->file = file; + file->private_data = fhp; + + fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw); + v4l2_fh_add(&fhp->fh); + + 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; + + if (!fh->pdi->stream) { + /* No stream defined for this node. This means that we're + not currently allowed to stream from this node. */ + return -EPERM; + } + + /* First read() attempt. Try to claim the stream and start + it... */ + if ((ret = pvr2_channel_claim_stream(&fh->channel, + fh->pdi->stream)) != 0) { + /* Someone else must already have it */ + return ret; + } + + fh->rhp = pvr2_channel_create_mpeg_stream(fh->pdi->stream); + if (!fh->rhp) { + pvr2_channel_claim_stream(&fh->channel,NULL); + return -ENOMEM; + } + + hdw = fh->channel.mc_head->hdw; + sp = fh->pdi->stream->stream; + pvr2_stream_set_callback(sp,(pvr2_stream_callback)pvr2_v4l2_notify,fh); + pvr2_hdw_set_stream_type(hdw,fh->pdi->config); + if ((ret = pvr2_hdw_set_streaming(hdw,!0)) < 0) return ret; + return pvr2_ioread_set_enabled(fh->rhp,!0); +} + + +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 __poll_t pvr2_v4l2_poll(struct file *file, poll_table *wait) +{ + __poll_t mask = 0; + struct pvr2_v4l2_fh *fh = file->private_data; + int ret; + + if (fh->fw_mode_flag) { + mask |= EPOLLIN | EPOLLRDNORM; + return mask; + } + + if (!fh->rhp) { + ret = pvr2_v4l2_iosetup(fh); + if (ret) return EPOLLERR; + } + + poll_wait(file,&fh->wait_data,wait); + + if (pvr2_ioread_avail(fh->rhp) >= 0) { + mask |= EPOLLIN | EPOLLRDNORM; + } + + return mask; +} + + +static const struct v4l2_file_operations vdev_fops = { + .owner = THIS_MODULE, + .open = pvr2_v4l2_open, + .release = pvr2_v4l2_release, + .read = pvr2_v4l2_read, + .unlocked_ioctl = video_ioctl2, + .poll = pvr2_v4l2_poll, +}; + + +static const struct video_device vdev_template = { + .fops = &vdev_fops, +}; + + +static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip, + struct pvr2_v4l2 *vp, + int v4l_type) +{ + int mindevnum; + int unit_number; + struct pvr2_hdw *hdw; + int *nr_ptr = NULL; + u32 caps = V4L2_CAP_TUNER | V4L2_CAP_READWRITE; + + dip->v4lp = vp; + + hdw = vp->channel.mc_head->hdw; + dip->v4l_type = v4l_type; + switch (v4l_type) { + case VFL_TYPE_VIDEO: + dip->stream = &vp->channel.mc_head->video_stream; + dip->config = pvr2_config_mpeg; + dip->minor_type = pvr2_v4l_type_video; + nr_ptr = video_nr; + caps |= V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO; + if (!dip->stream) { + pr_err(KBUILD_MODNAME + ": Failed to set up pvrusb2 v4l video dev due to missing stream instance\n"); + return; + } + break; + case VFL_TYPE_VBI: + dip->config = pvr2_config_vbi; + dip->minor_type = pvr2_v4l_type_vbi; + nr_ptr = vbi_nr; + caps |= V4L2_CAP_VBI_CAPTURE; + break; + case VFL_TYPE_RADIO: + dip->stream = &vp->channel.mc_head->video_stream; + dip->config = pvr2_config_mpeg; + dip->minor_type = pvr2_v4l_type_radio; + nr_ptr = radio_nr; + caps |= V4L2_CAP_RADIO; + break; + default: + /* Bail out (this should be impossible) */ + pr_err(KBUILD_MODNAME ": Failed to set up pvrusb2 v4l dev due to unrecognized config\n"); + return; + } + + dip->devbase = vdev_template; + dip->devbase.release = pvr2_video_device_release; + dip->devbase.ioctl_ops = &pvr2_ioctl_ops; + dip->devbase.device_caps = caps; + { + int val; + pvr2_ctrl_get_value( + pvr2_hdw_get_ctrl_by_id(hdw, + PVR2_CID_STDAVAIL), &val); + dip->devbase.tvnorms = (v4l2_std_id)val; + } + + mindevnum = -1; + unit_number = pvr2_hdw_get_unit_number(hdw); + if (nr_ptr && (unit_number >= 0) && (unit_number < PVR_NUM)) { + mindevnum = nr_ptr[unit_number]; + } + pvr2_hdw_set_v4l2_dev(hdw, &dip->devbase); + if ((video_register_device(&dip->devbase, + dip->v4l_type, mindevnum) < 0) && + (video_register_device(&dip->devbase, + dip->v4l_type, -1) < 0)) { + pr_err(KBUILD_MODNAME + ": Failed to register pvrusb2 v4l device\n"); + } + + pr_info("pvrusb2: registered device %s [%s]\n", + video_device_node_name(&dip->devbase), + pvr2_config_get_name(dip->config)); + + pvr2_hdw_v4l_store_minor_number(hdw, + dip->minor_type,dip->devbase.minor); +} + + +struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp) +{ + struct pvr2_v4l2 *vp; + + vp = kzalloc(sizeof(*vp),GFP_KERNEL); + if (!vp) return vp; + 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 */ + vp->dev_video = kzalloc(sizeof(*vp->dev_video),GFP_KERNEL); + if (!vp->dev_video) goto fail; + pvr2_v4l2_dev_init(vp->dev_video,vp,VFL_TYPE_VIDEO); + if (pvr2_hdw_get_input_available(vp->channel.mc_head->hdw) & + (1 << PVR2_CVAL_INPUT_RADIO)) { + vp->dev_radio = kzalloc(sizeof(*vp->dev_radio),GFP_KERNEL); + if (!vp->dev_radio) goto fail; + pvr2_v4l2_dev_init(vp->dev_radio,vp,VFL_TYPE_RADIO); + } + + return vp; + fail: + pvr2_trace(PVR2_TRACE_STRUCT,"Failure creating pvr2_v4l2 id=%p",vp); + pvr2_v4l2_destroy_no_lock(vp); + return NULL; +} |