// SPDX-License-Identifier: GPL-2.0-or-later
/*
* cx18 ioctl system call
*
* Derived from ivtv-ioctl.c
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
* Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
*/
#include "cx18-driver.h"
#include "cx18-io.h"
#include "cx18-version.h"
#include "cx18-mailbox.h"
#include "cx18-i2c.h"
#include "cx18-queue.h"
#include "cx18-fileops.h"
#include "cx18-vbi.h"
#include "cx18-audio.h"
#include "cx18-video.h"
#include "cx18-streams.h"
#include "cx18-ioctl.h"
#include "cx18-gpio.h"
#include "cx18-controls.h"
#include "cx18-cards.h"
#include "cx18-av-core.h"
#include <media/tveeprom.h>
#include <media/v4l2-event.h>
u16 cx18_service2vbi(int type)
{
switch (type) {
case V4L2_SLICED_TELETEXT_B:
return CX18_SLICED_TYPE_TELETEXT_B;
case V4L2_SLICED_CAPTION_525:
return CX18_SLICED_TYPE_CAPTION_525;
case V4L2_SLICED_WSS_625:
return CX18_SLICED_TYPE_WSS_625;
case V4L2_SLICED_VPS:
return CX18_SLICED_TYPE_VPS;
default:
return 0;
}
}
/* Check if VBI services are allowed on the (field, line) for the video std */
static int valid_service_line(int field, int line, int is_pal)
{
return (is_pal && line >= 6 &&
((field == 0 && line <= 23) || (field == 1 && line <= 22))) ||
(!is_pal && line >= 10 && line < 22);
}
/*
* For a (field, line, std) and inbound potential set of services for that line,
* return the first valid service of those passed in the incoming set for that
* line in priority order:
* CC, VPS, or WSS over TELETEXT for well known lines
* TELETEXT, before VPS, before CC, before WSS, for other lines
*/
static u16 select_service_from_set(int field, int line, u16 set, int is_pal)
{
u16 valid_set = (is_pal ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525);
int i;
set = set & valid_set;
if (set == 0 || !valid_service_line(field, line, is_pal))
return 0;
if (!is_pal) {
if (line == 21 && (set & V4L2_SLICED_CAPTION_525))
return V4L2_SLICED_CAPTION_525;
} else {
if (line == 16 && field == 0 && (set & V4L2_SLICED_VPS))
return V4L2_SLICED_VPS;
if (line == 23 && field == 0 && (set & V4L2_SLICED_WSS_625))
return V4L2_SLICED_WSS_625;
if (line == 23)
return 0;
}
for (i = 0; i < 32; i++) {
if (BIT(i) & set)
return 1 << i;
}
return 0;
}
/*
* Expand the service_set of *fmt into valid service_lines for the std,
* and clear the passed in fmt->service_set
*/
void cx18_expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
{
u16 set = fmt->service_set;
int f, l;
fmt->service_set = 0;
for (f = 0; f < 2; f++) {
for (l = 0; l < 24; l++)
fmt->service_lines[f][l] = select_service_from_set(f, l, set, is_pal);
}
}
/*
* Sanitize the service_lines in *fmt per the video std, and return 1
* if any service_line is left as valid after santization
*/
static int check_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
{
int f, l;
u16 set = 0;
for (f = 0; f < 2; f++) {
for (l = 0; l < 24; l++) {
fmt->service_lines[f][l] = select_service_from_set(f, l, fmt->service_lines[f][l], is_pal);
set |= fmt->service_lines[f][l];
}
}
return set != 0;
}
/* Compute the service_set from the assumed valid service_lines of *fmt */
u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt)
{
int f, l;
u16 set = 0;
for (f = 0; f < 2; f++) {
for (l = 0; l < 24; l++)
set |= fmt->service_lines[f][l];
}
return set;
}
static int cx18_g_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
pixfmt->width = cx->cxhdl.width;
pixfmt->height = cx->cxhdl.height;
pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
pixfmt->field = V4L2_FIELD_INTERLACED;
if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
pixfmt->pixelformat = s->pixelformat;
pixfmt->sizeimage = s->vb_bytes_per_frame;
pixfmt->bytesperline = s->vb_bytes_per_line;
} else {
pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
pixfmt->sizeimage = 128 * 1024;
pixfmt->bytesperline = 0;
}
return 0;
}
static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
struct cx18 *cx = fh2id(fh)->cx;
struct v4l2_vbi_format *vbifmt = &fmt->fmt.vbi;
vbifmt->sampling_rate = 27000000;
vbifmt->offset = 248; /* FIXME - slightly wrong for both 50 & 60 Hz */
vbifmt->samples_per_line = VBI_ACTIVE_SAMPLES - 4;
vbifmt->sample_format = V4L2_PIX_FMT_GREY;
vbifmt->start[0] = cx->vbi.start[0];
vbifmt->start[1] = cx->vbi.start[1];
vbifmt->count[0] = vbifmt->count[1] = cx->vbi.count;
vbifmt->flags = 0;
vbifmt->reserved[0] = 0;
vbifmt->reserved[1] = 0;
return 0;
}
static int cx18_g_fmt_sliced_vbi_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
struct cx18 *cx = fh2id(fh)->cx;
struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
/* sane, V4L2 spec compliant, defaults */
vbifmt->reserved[0] = 0;
vbifmt->reserved[1] = 0;
vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
vbifmt->service_set = 0;
/*
* Fetch the configured service_lines and total service_set from the
* digitizer/slicer. Note, cx18_av_vbi() wipes the passed in
* fmt->fmt.sliced under valid calling conditions
*/
if (v4l2_subdev_call(cx->sd_av, vbi, g_sliced_fmt, &fmt->fmt.sliced))
return -EINVAL;
vbifmt->service_set = cx18_get_service_set(vbifmt);
return 0;
}
static int cx18_try_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
int w = fmt->fmt.pix.width;
int h = fmt->fmt.pix.height;
int min_h = 2;
w = min(w, 720);
w = max(w, 2);
if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
/* YUV height must be a multiple of 32 */
h &= ~0x1f;
min_h = 32;
}
h = min(h, cx->is_50hz ? 576 : 480);
h = max(h, min_h);
fmt->fmt.pix.width = w;
fmt->fmt.pix.height = h;
return 0;
}
static int cx18_try_fmt_vbi_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
return cx18_g_fmt_vbi_cap(file, fh, fmt);
}
static int cx18_try_fmt_sliced_vbi_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
struct cx18 *cx = fh2id(fh)->cx;
struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
vbifmt->reserved[0] = 0;
vbifmt->reserved[1] = 0;
/* If given a service set, expand it validly & clear passed in set */
if (vbifmt->service_set)
cx18_expand_service_set(vbifmt, cx->is_50hz);
/* Sanitize the service_lines, and compute the new set if any valid */
if (check_service_set(vbifmt, cx->is_50hz))
vbifmt->service_set = cx18_get_service_set(vbifmt);
return 0;
}
static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
struct cx18_stream *s = &cx->streams[id->type];
int ret;
int w, h;
ret = cx18_try_fmt_vid_cap(file, fh, fmt);
if (ret)
return ret;
w = fmt->fmt.pix.width;
h = fmt->fmt.pix.height;
if (cx->cxhdl.width == w && cx->cxhdl.height == h &&
s->pixelformat == fmt->fmt.pix.pixelformat)
return 0;
if (atomic_read(&cx->ana_capturing) > 0)
return -EBUSY;
s->pixelformat = fmt->fmt.pix.pixelformat;
/* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
if (s->pixelformat == V4L2_PIX_FMT_HM12) {
s->vb_bytes_per_frame = h * 720 * 3 / 2;
s->vb_bytes_per_line = 720; /* First plane */
} else {
s->vb_bytes_per_frame = h * 720 * 2;
s->vb_bytes_per_line = 1440; /* Packed */
}
format.format.width = cx->cxhdl.width = w;
format.format.height = cx->cxhdl.height = h;
format.format.code = MEDIA_BUS_FMT_FIXED;
v4l2_subdev_call(cx->sd_av, pad, set_fmt, NULL, &format);
return cx18_g_fmt_vid_cap(file, fh, fmt);
}
static int cx18_s_fmt_vbi_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
int ret;
/*
* Changing the Encoder's Raw VBI parameters won't have any effect
* if any analog capture is ongoing
*/
if (!cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
return -EBUSY;
/*
* Set the digitizer registers for raw active VBI.
* Note cx18_av_vbi_wipes out a lot of the passed in fmt under valid
* calling conditions
*/
ret = v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &fmt->fmt.vbi);
if (ret)
return ret;
/* Store our new v4l2 (non-)sliced VBI state */
cx->vbi.sliced_in->service_set = 0;
cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE;
return cx18_g_fmt_vbi_cap(file, fh, fmt);
}
static int cx18_s_fmt_sliced_vbi_cap(struct file *file, void *fh,
struct v4l2_format *fmt)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
int ret;
struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
cx18_try_fmt_sliced_vbi_cap(file, fh, fmt);
/*
* Changing the Encoder's Raw VBI parameters won't have any effect
* if any analog capture is ongoing
*/
if (cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
return -EBUSY;
/*
* Set the service_lines requested in the digitizer/slicer registers.
* Note, cx18_av_vbi() wipes some "impossible" service lines in the
* passed in fmt->fmt.sliced under valid calling conditions
*/
ret = v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &fmt->fmt.sliced);
if (ret)
return ret;
/* Store our current v4l2 sliced VBI settings */
cx->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
memcpy(cx->vbi.sliced_in, vbifmt, sizeof(*cx->vbi.sliced_in));
return 0;
}
#ifdef [31mCONFIG_VIDEO_ADV_DEBUG[0m
static int cx18_g_register(struct file *file, void *fh,
struct v4l2_dbg_register *reg)
{
struct cx18 *cx = fh2id(fh)->cx;
if (reg->reg & 0x3)
return -EINVAL;
if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
return -EINVAL;
reg->size = 4;
reg->val = cx18_read_enc(cx, reg->reg);
return 0;
}
static int cx18_s_register(struct file *file, void *fh,
const struct v4l2_dbg_register *reg)
{
struct cx18 *cx = fh2id(fh)->cx;
if (reg->reg & 0x3)
return -EINVAL;
if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
return -EINVAL;
cx18_write_enc(cx, reg->val, reg->reg);
return 0;
}
#endif
static int cx18_querycap(struct file *file, void *fh,
struct v4l2_capability *vcap)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
strscpy(vcap->driver, CX18_DRIVER_NAME, sizeof(vcap->driver));
strscpy(vcap->card, cx->card_name, sizeof(vcap->card));
snprintf(vcap->bus_info, sizeof(vcap->bus_info),
"PCI:%s", pci_name(cx->pci_dev));
vcap->capabilities = cx->v4l2_cap | V4L2_CAP_DEVICE_CAPS;
return 0;
}
static int cx18_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
{
struct cx18 *cx = fh2id(fh)->cx;
return cx18_get_audio_input(cx, vin->index, vin);
}
static int cx18_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
{
struct cx18 *cx = fh2id(fh)->cx;
vin->index = cx->audio_input;
return cx18_get_audio_input(cx, vin->index, vin);
}
static int cx18_s_audio(struct file *file, void *fh, const struct v4l2_audio *vout)
{
struct cx18 *cx = fh2id(fh)->cx;
if (vout->index >= cx->nof_audio_inputs)
return -EINVAL;
cx->audio_input = vout->index;
cx18_audio_set_io(cx);
return 0;
}
static int cx18_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
{
struct cx18 *cx = fh2id(fh)->cx;
/* set it to defaults from our table */
return cx18_get_input(cx, vin->index, vin);
}
static int cx18_g_pixelaspect(struct file *file, void *fh,
int type, struct v4l2_fract *f)
{
struct cx18 *cx = fh2id(fh)->cx;
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
f->numerator = cx->is_50hz ? 54 : 11;
f->denominator = cx->is_50hz ? 59 : 10;
return 0;
}
static int cx18_g_selection(struct file *file, void *fh,
struct v4l2_selection *sel)
{
struct cx18 *cx = fh2id(fh)->cx;
if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
switch (sel->target) {
case V4L2_SEL_TGT_CROP_BOUNDS:
case V4L2_SEL_TGT_CROP_DEFAULT:
sel->r.top = sel->r.left = 0;
sel->r.width = 720;
sel->r.height = cx->is_50hz ? 576 : 480;
break;
default:
return -EINVAL;
}
return 0;
}
static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_fmtdesc *fmt)
{
static const struct v4l2_fmtdesc formats[] = {
{ 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
"HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 }
},
{ 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED,
"MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 }
},
{ 2, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
"UYVY 4:2:2", V4L2_PIX_FMT_UYVY, { 0, 0, 0, 0 }
},
};
if (fmt->index > ARRAY_SIZE(formats) - 1)
return -EINVAL;
*fmt = formats[fmt->index];
return 0;
}
static int cx18_g_input(struct file *file, void *fh, unsigned int *i)
{
struct cx18 *cx = fh2id(fh)->cx;
*i = cx->active_input;
return 0;
}
int cx18_s_input(struct file *file, void *fh, unsigned int inp)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
v4l2_std_id std = V4L2_STD_ALL;
const struct cx18_card_video_input *card_input =
cx->card->video_inputs + inp;
if (inp >= cx->nof_inputs)
return -EINVAL;
if (inp == cx->active_input) {
CX18_DEBUG_INFO("Input unchanged\n");
return 0;
}
CX18_DEBUG_INFO("Changing input from %d to %d\n",
cx->active_input, inp);
cx->active_input = inp;
/* Set the audio input to whatever is appropriate for the input type. */
cx->audio_input = cx->card->video_inputs[inp].audio_index;
if (card_input->video_type == V4L2_INPUT_TYPE_TUNER)
std = cx->tuner_std;
cx->streams[CX18_ENC_STREAM_TYPE_MPG].video_dev.tvnorms = std;
cx->streams[CX18_ENC_STREAM_TYPE_YUV].video_dev.tvnorms = std;
cx->streams[CX18_ENC_STREAM_TYPE_VBI].video_dev.tvnorms = std;
/* prevent others from messing with the streams until
we're finished changing inputs. */
cx18_mute(cx);
cx18_video_set_io(cx);
cx18_audio_set_io(cx);
cx18_unmute(cx);
return 0;
}
static int cx18_g_frequency(struct file *file, void *fh,
struct v4l2_frequency *vf)
{
struct cx18 *cx = fh2id(fh)->cx;
if (vf->tuner != 0)
return -EINVAL;
cx18_call_all(cx, tuner, g_frequency, vf);
return 0;
}
int cx18_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
if (vf->tuner != 0)
return -EINVAL;
cx18_mute(cx);
CX18_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf->frequency);
cx18_call_all(cx, tuner, s_frequency, vf);
cx18_unmute(cx);
return 0;
}
static int cx18_g_std(struct file *file, void *fh, v4l2_std_id *std)
{
struct cx18 *cx = fh2id(fh)->cx;
*std = cx->std;
return 0;
}
int cx18_s_std(struct file *file, void *fh, v4l2_std_id std)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
if ((std & V4L2_STD_ALL) == 0)
return -EINVAL;
if (std == cx->std)
return 0;
if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ||
atomic_read(&cx->ana_capturing) > 0) {
/* Switching standard would turn off the radio or mess
with already running streams, prevent that by
returning EBUSY. */
return -EBUSY;
}
cx->std = std;
cx->is_60hz = (std & V4L2_STD_525_60) ? 1 : 0;
cx->is_50hz = !cx->is_60hz;
cx2341x_handler_set_50hz(&cx->cxhdl, cx->is_50hz);
cx->cxhdl.width = 720;
cx->cxhdl.height = cx->is_50hz ? 576 : 480;
cx->vbi.count = cx->is_50hz ? 18 : 12;
cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
cx->vbi.start[1] = cx->is_50hz ? 318 : 273;
CX18_DEBUG_INFO("Switching standard to %llx.\n",
(unsigned long long) cx->std);
/* Tuner */
cx18_call_all(cx, video, s_std, cx->std);
return 0;
}
static int cx18_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
if (vt->index != 0)
return -EINVAL;
cx18_call_all(cx, tuner, s_tuner, vt);
return 0;
}
static int cx18_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
{
struct cx18 *cx = fh2id(fh)->cx;
if (vt->index != 0)
return -EINVAL;
cx18_call_all(cx, tuner, g_tuner, vt);
if (vt->type == V4L2_TUNER_RADIO)
strscpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name));
else
strscpy(vt->name, "cx18 TV Tuner", sizeof(vt->name));
return 0;
}
static int cx18_g_sliced_vbi_cap(struct file *file, void *fh,
struct v4l2_sliced_vbi_cap *cap)
{
struct cx18 *cx = fh2id(fh)->cx;
int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
int f, l;
if (cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
return -EINVAL;
cap->service_set = 0;
for (f = 0; f < 2; f++) {
for (l = 0; l < 24; l++) {
if (valid_service_line(f, l, cx->is_50hz)) {
/*
* We can find all v4l2 supported vbi services
* for the standard, on a valid line for the std
*/
cap->service_lines[f][l] = set;
cap->service_set |= set;
} else
cap->service_lines[f][l] = 0;
}
}
for (f = 0; f < 3; f++)
cap->reserved[f] = 0;
return 0;
}
static int _cx18_process_idx_data(struct cx18_buffer *buf,
struct v4l2_enc_idx *idx)
{
int consumed, remaining;
struct v4l2_enc_idx_entry *e_idx;
struct cx18_enc_idx_entry *e_buf;
/* Frame type lookup: 1=I, 2=P, 4=B */
const int mapping[8] = {
-1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P,
-1, V4L2_ENC_IDX_FRAME_B, -1, -1, -1
};
/*
* Assumption here is that a buf holds an integral number of
* struct cx18_enc_idx_entry objects and is properly aligned.
* This is enforced by the module options on IDX buffer sizes.
*/
remaining = buf->bytesused - buf->readpos;
consumed = 0;
e_idx = &idx->entry[idx->entries];
e_buf = (struct cx18_enc_idx_entry *) &buf->buf[buf->readpos];
while (remaining >= sizeof(struct cx18_enc_idx_entry) &&
idx->entries < V4L2_ENC_IDX_ENTRIES) {
e_idx->offset = (((u64) le32_to_cpu(e_buf->offset_high)) << 32)
| le32_to_cpu(e_buf->offset_low);
e_idx->pts = (((u64) (le32_to_cpu(e_buf->pts_high) & 1)) << 32)
| le32_to_cpu(e_buf->pts_low);
e_idx->length = le32_to_cpu(e_buf->length);
e_idx->flags = mapping[le32_to_cpu(e_buf->flags) & 0x7];
e_idx->reserved[0] = 0;
e_idx->reserved[1] = 0;
idx->entries++;
e_idx = &idx->entry[idx->entries];
e_buf++;
remaining -= sizeof(struct cx18_enc_idx_entry);
consumed += sizeof(struct cx18_enc_idx_entry);
}
/* Swallow any partial entries at the end, if there are any */
if (remaining > 0 && remaining < sizeof(struct cx18_enc_idx_entry))
consumed += remaining;
buf->readpos += consumed;
return consumed;
}
static int cx18_process_idx_data(struct cx18_stream *s, struct cx18_mdl *mdl,
struct v4l2_enc_idx *idx)
{
if (s->type != CX18_ENC_STREAM_TYPE_IDX)
return -EINVAL;
if (mdl->curr_buf == NULL)
mdl->curr_buf = list_first_entry(&mdl->buf_list,
struct cx18_buffer, list);
if (list_entry_is_past_end(mdl->curr_buf, &mdl->buf_list, list)) {
/*
* For some reason we've exhausted the buffers, but the MDL
* object still said some data was unread.
* Fix that and bail out.
*/
mdl->readpos = mdl->bytesused;
return 0;
}
list_for_each_entry_from(mdl->curr_buf, &mdl->buf_list, list) {
/* Skip any empty buffers in the MDL */
if (mdl->curr_buf->readpos >= mdl->curr_buf->bytesused)
continue;
mdl->readpos += _cx18_process_idx_data(mdl->curr_buf, idx);
/* exit when MDL drained or request satisfied */
if (idx->entries >= V4L2_ENC_IDX_ENTRIES ||
mdl->curr_buf->readpos < mdl->curr_buf->bytesused ||
mdl->readpos >= mdl->bytesused)
break;
}
return 0;
}
static int cx18_g_enc_index(struct file *file, void *fh,
struct v4l2_enc_idx *idx)
{
struct cx18 *cx = fh2id(fh)->cx;
struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
s32 tmp;
struct cx18_mdl *mdl;
if (!cx18_stream_enabled(s)) /* Module options inhibited IDX stream */
return -EINVAL;
/* Compute the best case number of entries we can buffer */
tmp = s->buffers -
s->bufs_per_mdl * CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN;
if (tmp <= 0)
tmp = 1;
tmp = tmp * s->buf_size / sizeof(struct cx18_enc_idx_entry);
/* Fill out the header of the return structure */
idx->entries = 0;
idx->entries_cap = tmp;
memset(idx->reserved, 0, sizeof(idx->reserved));
/* Pull IDX MDLs and buffers from q_full and populate the entries */
do {
mdl = cx18_dequeue(s, &s->q_full);
if (mdl == NULL) /* No more IDX data right now */
break;
/* Extract the Index entry data from the MDL and buffers */
cx18_process_idx_data(s, mdl, idx);
if (mdl->readpos < mdl->bytesused) {
/* We finished with data remaining, push the MDL back */
cx18_push(s, mdl, &s->q_full);
break;
}
/* We drained this MDL, schedule it to go to the firmware */
cx18_enqueue(s, mdl, &s->q_free);
} while (idx->entries < V4L2_ENC_IDX_ENTRIES);
/* Tell the work handler to send free IDX MDLs to the firmware */
cx18_stream_load_fw_queue(s);
return 0;
}
static struct videobuf_queue *cx18_vb_queue(struct cx18_open_id *id)
{
struct videobuf_queue *q = NULL;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
switch (s->vb_type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
q = &s->vbuf_q;
break;
case V4L2_BUF_TYPE_VBI_CAPTURE:
break;
default:
break;
}
return q;
}
static int cx18_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct cx18_open_id *id = file->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
/* Start the hardware only if we're the video device */
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
if (id->type != CX18_ENC_STREAM_TYPE_YUV)
return -EINVAL;
/* Establish a buffer timeout */
mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
return videobuf_streamon(cx18_vb_queue(id));
}
static int cx18_streamoff(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct cx18_open_id *id = file->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
/* Start the hardware only if we're the video device */
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
if (id->type != CX18_ENC_STREAM_TYPE_YUV)
return -EINVAL;
return videobuf_streamoff(cx18_vb_queue(id));
}
static int cx18_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *rb)
{
struct cx18_open_id *id = file->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
return videobuf_reqbufs(cx18_vb_queue(id), rb);
}
static int cx18_querybuf(struct file *file, void *priv,
struct v4l2_buffer *b)
{
struct cx18_open_id *id = file->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
return videobuf_querybuf(cx18_vb_queue(id), b);
}
static int cx18_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct cx18_open_id *id = file->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
return videobuf_qbuf(cx18_vb_queue(id), b);
}
static int cx18_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct cx18_open_id *id = file->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
return -EINVAL;
return videobuf_dqbuf(cx18_vb_queue(id), b, file->f_flags & O_NONBLOCK);
}
static int cx18_encoder_cmd(struct file *file, void *fh,
struct v4l2_encoder_cmd *enc)
{
struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
u32 h;
switch (enc->cmd) {
case V4L2_ENC_CMD_START:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
enc->flags = 0;
return cx18_start_capture(id);
case V4L2_ENC_CMD_STOP:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
cx18_stop_capture(id,
enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
break;
case V4L2_ENC_CMD_PAUSE:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
enc->flags = 0;
if (!atomic_read(&cx->ana_capturing))
return -EPERM;
if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
return 0;
h = cx18_find_handle(cx);
if (h == CX18_INVALID_TASK_HANDLE) {
CX18_ERR("Can't find valid task handle for V4L2_ENC_CMD_PAUSE\n");
return -EBADFD;
}
cx18_mute(cx);
cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, h);
break;
case V4L2_ENC_CMD_RESUME:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
enc->flags = 0;
if (!atomic_read(&cx->ana_capturing))
return -EPERM;
if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
return 0;
h = cx18_find_handle(cx);
if (h == CX18_INVALID_TASK_HANDLE) {
CX18_ERR("Can't find valid task handle for V4L2_ENC_CMD_RESUME\n");
return -EBADFD;
}
cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, h);
cx18_unmute(cx);
break;
default:
CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
return -EINVAL;
}
return 0;
}
static int cx18_try_encoder_cmd(struct file *file, void *fh,
struct v4l2_encoder_cmd *enc)
{
struct cx18 *cx = fh2id(fh)->cx;
switch (enc->cmd) {
case V4L2_ENC_CMD_START:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
enc->flags = 0;
break;
case V4L2_ENC_CMD_STOP:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
break;
case V4L2_ENC_CMD_PAUSE:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
enc->flags = 0;
break;
case V4L2_ENC_CMD_RESUME:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
enc->flags = 0;
break;
default:
CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
return -EINVAL;
}
return 0;
}
static int cx18_log_status(struct file *file, void *fh)
{
struct cx18 *cx = fh2id(fh)->cx;
struct v4l2_input vidin;
struct v4l2_audio audin;
int i;
CX18_INFO("Version: %s Card: %s\n", CX18_VERSION, cx->card_name);
if (cx->hw_flags & CX18_HW_TVEEPROM) {
struct tveeprom tv;
cx18_read_eeprom(cx, &tv);
}
cx18_call_all(cx, core, log_status);
cx18_get_input(cx, cx->active_input, &vidin);
cx18_get_audio_input(cx, cx->audio_input, &audin);
CX18_INFO("Video Input: %s\n", vidin.name);
CX18_INFO("Audio Input: %s\n", audin.name);
mutex_lock(&cx->gpio_lock);
CX18_INFO("GPIO: direction 0x%08x, value 0x%08x\n",
cx->gpio_dir, cx->gpio_val);
mutex_unlock(&cx->gpio_lock);
CX18_INFO("Tuner: %s\n",
test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ? "Radio" : "TV");
v4l2_ctrl_handler_log_status(&cx->cxhdl.hdl, cx->v4l2_dev.name);
CX18_INFO("Status flags: 0x%08lx\n", cx->i_flags);
for (i = 0; i < CX18_MAX_STREAMS; i++) {
struct cx18_stream *s = &cx->streams[i];
if (s->video_dev.v4l2_dev == NULL || s->buffers == 0)
continue;
CX18_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n",
s->name, s->s_flags,
atomic_read(&s->q_full.depth) * s->bufs_per_mdl * 100
/ s->buffers,
(s->buffers * s->buf_size) / 1024, s->buffers);
}
CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n",
(long long)cx->mpg_data_received,
(long long)cx->vbi_data_inserted);
return 0;
}
static long cx18_default(struct file *file, void *fh, bool valid_prio,
unsigned int cmd, void *arg)
{
struct cx18 *cx = fh2id(fh)->cx;
switch (cmd) {
case VIDIOC_INT_RESET: {
u32 val = *(u32 *)arg;
if ((val == 0) || (val & 0x01))
cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL, core, reset,
(u32) CX18_GPIO_RESET_Z8F0811);
break;
}
default:
return -ENOTTY;
}
return 0;
}
static const struct v4l2_ioctl_ops cx18_ioctl_ops = {
.vidioc_querycap = cx18_querycap,
.vidioc_s_audio = cx18_s_audio,
.vidioc_g_audio = cx18_g_audio,
.vidioc_enumaudio = cx18_enumaudio,
.vidioc_enum_input = cx18_enum_input,
.vidioc_g_pixelaspect = cx18_g_pixelaspect,
.vidioc_g_selection = cx18_g_selection,
.vidioc_g_input = cx18_g_input,
.vidioc_s_input = cx18_s_input,
.vidioc_g_frequency = cx18_g_frequency,
.vidioc_s_frequency = cx18_s_frequency,
.vidioc_s_tuner = cx18_s_tuner,
.vidioc_g_tuner = cx18_g_tuner,
.vidioc_g_enc_index = cx18_g_enc_index,
.vidioc_g_std = cx18_g_std,
.vidioc_s_std = cx18_s_std,
.vidioc_log_status = cx18_log_status,
.vidioc_enum_fmt_vid_cap = cx18_enum_fmt_vid_cap,
.vidioc_encoder_cmd = cx18_encoder_cmd,
.vidioc_try_encoder_cmd = cx18_try_encoder_cmd,
.vidioc_g_fmt_vid_cap = cx18_g_fmt_vid_cap,
.vidioc_g_fmt_vbi_cap = cx18_g_fmt_vbi_cap,
.vidioc_g_fmt_sliced_vbi_cap = cx18_g_fmt_sliced_vbi_cap,
.vidioc_s_fmt_vid_cap = cx18_s_fmt_vid_cap,
.vidioc_s_fmt_vbi_cap = cx18_s_fmt_vbi_cap,
.vidioc_s_fmt_sliced_vbi_cap = cx18_s_fmt_sliced_vbi_cap,
.vidioc_try_fmt_vid_cap = cx18_try_fmt_vid_cap,
.vidioc_try_fmt_vbi_cap = cx18_try_fmt_vbi_cap,
.vidioc_try_fmt_sliced_vbi_cap = cx18_try_fmt_sliced_vbi_cap,
.vidioc_g_sliced_vbi_cap = cx18_g_sliced_vbi_cap,
#ifdef [31mCONFIG_VIDEO_ADV_DEBUG[0m
.vidioc_g_register = cx18_g_register,
.vidioc_s_register = cx18_s_register,
#endif
.vidioc_default = cx18_default,
.vidioc_streamon = cx18_streamon,
.vidioc_streamoff = cx18_streamoff,
.vidioc_reqbufs = cx18_reqbufs,
.vidioc_querybuf = cx18_querybuf,
.vidioc_qbuf = cx18_qbuf,
.vidioc_dqbuf = cx18_dqbuf,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
void cx18_set_funcs(struct video_device *vdev)
{
vdev->ioctl_ops = &cx18_ioctl_ops;
}