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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/media/pci/ivtv/ivtv-streams.c
Initial import
Diffstat (limited to 'drivers/media/pci/ivtv/ivtv-streams.c')
-rw-r--r--drivers/media/pci/ivtv/ivtv-streams.c1025
1 files changed, 1025 insertions, 0 deletions
diff --git a/drivers/media/pci/ivtv/ivtv-streams.c b/drivers/media/pci/ivtv/ivtv-streams.c
new file mode 100644
index 000000000..d27c6df97
--- /dev/null
+++ b/drivers/media/pci/ivtv/ivtv-streams.c
@@ -0,0 +1,1025 @@
+/*
+ init/start/stop/exit stream functions
+ Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
+ Copyright (C) 2004 Chris Kennedy <c@groovy.org>
+ Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
+
+ 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/* License: GPL
+ * Author: Kevin Thayer <nufan_wfk at yahoo dot com>
+ *
+ * This file will hold API related functions, both internal (firmware api)
+ * and external (v4l2, etc)
+ *
+ * -----
+ * MPG600/MPG160 support by T.Adachi <tadachi@tadachi-net.com>
+ * and Takeru KOMORIYA<komoriya@paken.org>
+ *
+ * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
+ * using information provided by Jiun-Kuei Jung @ AVerMedia.
+ */
+
+#include "ivtv-driver.h"
+#include "ivtv-fileops.h"
+#include "ivtv-queue.h"
+#include "ivtv-mailbox.h"
+#include "ivtv-ioctl.h"
+#include "ivtv-irq.h"
+#include "ivtv-yuv.h"
+#include "ivtv-cards.h"
+#include "ivtv-streams.h"
+#include "ivtv-firmware.h"
+#include <media/v4l2-event.h>
+
+static const struct v4l2_file_operations ivtv_v4l2_enc_fops = {
+ .owner = THIS_MODULE,
+ .read = ivtv_v4l2_read,
+ .write = ivtv_v4l2_write,
+ .open = ivtv_v4l2_open,
+ .unlocked_ioctl = video_ioctl2,
+ .release = ivtv_v4l2_close,
+ .poll = ivtv_v4l2_enc_poll,
+};
+
+static const struct v4l2_file_operations ivtv_v4l2_dec_fops = {
+ .owner = THIS_MODULE,
+ .read = ivtv_v4l2_read,
+ .write = ivtv_v4l2_write,
+ .open = ivtv_v4l2_open,
+ .unlocked_ioctl = video_ioctl2,
+ .release = ivtv_v4l2_close,
+ .poll = ivtv_v4l2_dec_poll,
+};
+
+static const struct v4l2_file_operations ivtv_v4l2_radio_fops = {
+ .owner = THIS_MODULE,
+ .open = ivtv_v4l2_open,
+ .unlocked_ioctl = video_ioctl2,
+ .release = ivtv_v4l2_close,
+ .poll = ivtv_v4l2_enc_poll,
+};
+
+#define IVTV_V4L2_DEC_MPG_OFFSET 16 /* offset from 0 to register decoder mpg v4l2 minors on */
+#define IVTV_V4L2_ENC_PCM_OFFSET 24 /* offset from 0 to register pcm v4l2 minors on */
+#define IVTV_V4L2_ENC_YUV_OFFSET 32 /* offset from 0 to register yuv v4l2 minors on */
+#define IVTV_V4L2_DEC_YUV_OFFSET 48 /* offset from 0 to register decoder yuv v4l2 minors on */
+#define IVTV_V4L2_DEC_VBI_OFFSET 8 /* offset from 0 to register decoder vbi input v4l2 minors on */
+#define IVTV_V4L2_DEC_VOUT_OFFSET 16 /* offset from 0 to register vbi output v4l2 minors on */
+
+static struct {
+ const char *name;
+ int vfl_type;
+ int num_offset;
+ int dma, pio;
+ u32 v4l2_caps;
+ const struct v4l2_file_operations *fops;
+} ivtv_stream_info[] = {
+ { /* IVTV_ENC_STREAM_TYPE_MPG */
+ "encoder MPG",
+ VFL_TYPE_GRABBER, 0,
+ PCI_DMA_FROMDEVICE, 0,
+ V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
+ V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+ &ivtv_v4l2_enc_fops
+ },
+ { /* IVTV_ENC_STREAM_TYPE_YUV */
+ "encoder YUV",
+ VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET,
+ PCI_DMA_FROMDEVICE, 0,
+ V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
+ V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+ &ivtv_v4l2_enc_fops
+ },
+ { /* IVTV_ENC_STREAM_TYPE_VBI */
+ "encoder VBI",
+ VFL_TYPE_VBI, 0,
+ PCI_DMA_FROMDEVICE, 0,
+ V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_TUNER |
+ V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+ &ivtv_v4l2_enc_fops
+ },
+ { /* IVTV_ENC_STREAM_TYPE_PCM */
+ "encoder PCM",
+ VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET,
+ PCI_DMA_FROMDEVICE, 0,
+ V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+ &ivtv_v4l2_enc_fops
+ },
+ { /* IVTV_ENC_STREAM_TYPE_RAD */
+ "encoder radio",
+ VFL_TYPE_RADIO, 0,
+ PCI_DMA_NONE, 1,
+ V4L2_CAP_RADIO | V4L2_CAP_TUNER,
+ &ivtv_v4l2_radio_fops
+ },
+ { /* IVTV_DEC_STREAM_TYPE_MPG */
+ "decoder MPG",
+ VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET,
+ PCI_DMA_TODEVICE, 0,
+ V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE |
+ V4L2_CAP_VIDEO_OUTPUT_OVERLAY,
+ &ivtv_v4l2_dec_fops
+ },
+ { /* IVTV_DEC_STREAM_TYPE_VBI */
+ "decoder VBI",
+ VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET,
+ PCI_DMA_NONE, 1,
+ V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_READWRITE,
+ &ivtv_v4l2_enc_fops
+ },
+ { /* IVTV_DEC_STREAM_TYPE_VOUT */
+ "decoder VOUT",
+ VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET,
+ PCI_DMA_NONE, 1,
+ V4L2_CAP_SLICED_VBI_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
+ &ivtv_v4l2_dec_fops
+ },
+ { /* IVTV_DEC_STREAM_TYPE_YUV */
+ "decoder YUV",
+ VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET,
+ PCI_DMA_TODEVICE, 0,
+ V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE |
+ V4L2_CAP_VIDEO_OUTPUT_OVERLAY,
+ &ivtv_v4l2_dec_fops
+ }
+};
+
+static void ivtv_stream_init(struct ivtv *itv, int type)
+{
+ struct ivtv_stream *s = &itv->streams[type];
+
+ /* we need to keep vdev, so restore it afterwards */
+ memset(s, 0, sizeof(*s));
+
+ /* initialize ivtv_stream fields */
+ s->itv = itv;
+ s->type = type;
+ s->name = ivtv_stream_info[type].name;
+ s->caps = ivtv_stream_info[type].v4l2_caps;
+
+ if (ivtv_stream_info[type].pio)
+ s->dma = PCI_DMA_NONE;
+ else
+ s->dma = ivtv_stream_info[type].dma;
+ s->buf_size = itv->stream_buf_size[type];
+ if (s->buf_size)
+ s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size;
+ spin_lock_init(&s->qlock);
+ init_waitqueue_head(&s->waitq);
+ s->sg_handle = IVTV_DMA_UNMAPPED;
+ ivtv_queue_init(&s->q_free);
+ ivtv_queue_init(&s->q_full);
+ ivtv_queue_init(&s->q_dma);
+ ivtv_queue_init(&s->q_predma);
+ ivtv_queue_init(&s->q_io);
+}
+
+static int ivtv_prep_dev(struct ivtv *itv, int type)
+{
+ struct ivtv_stream *s = &itv->streams[type];
+ int num_offset = ivtv_stream_info[type].num_offset;
+ int num = itv->instance + ivtv_first_minor + num_offset;
+
+ /* These four fields are always initialized. If vdev.v4l2_dev == NULL, then
+ this stream is not in use. In that case no other fields but these
+ four can be used. */
+ s->vdev.v4l2_dev = NULL;
+ s->itv = itv;
+ s->type = type;
+ s->name = ivtv_stream_info[type].name;
+
+ /* Check whether the radio is supported */
+ if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO))
+ return 0;
+ if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
+ return 0;
+
+ /* User explicitly selected 0 buffers for these streams, so don't
+ create them. */
+ if (ivtv_stream_info[type].dma != PCI_DMA_NONE &&
+ itv->options.kilobytes[type] == 0) {
+ IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name);
+ return 0;
+ }
+
+ ivtv_stream_init(itv, type);
+
+ snprintf(s->vdev.name, sizeof(s->vdev.name), "%s %s",
+ itv->v4l2_dev.name, s->name);
+
+ s->vdev.num = num;
+ s->vdev.v4l2_dev = &itv->v4l2_dev;
+ if (ivtv_stream_info[type].v4l2_caps &
+ (V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_SLICED_VBI_OUTPUT))
+ s->vdev.vfl_dir = VFL_DIR_TX;
+ s->vdev.fops = ivtv_stream_info[type].fops;
+ s->vdev.ctrl_handler = itv->v4l2_dev.ctrl_handler;
+ s->vdev.release = video_device_release_empty;
+ s->vdev.tvnorms = V4L2_STD_ALL;
+ s->vdev.lock = &itv->serialize_lock;
+ if (s->type == IVTV_DEC_STREAM_TYPE_VBI) {
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_S_AUDIO);
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_G_AUDIO);
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_ENUMAUDIO);
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_ENUMINPUT);
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_S_INPUT);
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_G_INPUT);
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_S_FREQUENCY);
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_G_FREQUENCY);
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_S_TUNER);
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_G_TUNER);
+ v4l2_disable_ioctl(&s->vdev, VIDIOC_S_STD);
+ }
+ ivtv_set_funcs(&s->vdev);
+ return 0;
+}
+
+/* Initialize v4l2 variables and prepare v4l2 devices */
+int ivtv_streams_setup(struct ivtv *itv)
+{
+ int type;
+
+ /* Setup V4L2 Devices */
+ for (type = 0; type < IVTV_MAX_STREAMS; type++) {
+ /* Prepare device */
+ if (ivtv_prep_dev(itv, type))
+ break;
+
+ if (itv->streams[type].vdev.v4l2_dev == NULL)
+ continue;
+
+ /* Allocate Stream */
+ if (ivtv_stream_alloc(&itv->streams[type]))
+ break;
+ }
+ if (type == IVTV_MAX_STREAMS)
+ return 0;
+
+ /* One or more streams could not be initialized. Clean 'em all up. */
+ ivtv_streams_cleanup(itv);
+ return -ENOMEM;
+}
+
+static int ivtv_reg_dev(struct ivtv *itv, int type)
+{
+ struct ivtv_stream *s = &itv->streams[type];
+ int vfl_type = ivtv_stream_info[type].vfl_type;
+ const char *name;
+ int num;
+
+ if (s->vdev.v4l2_dev == NULL)
+ return 0;
+
+ num = s->vdev.num;
+ /* card number + user defined offset + device offset */
+ if (type != IVTV_ENC_STREAM_TYPE_MPG) {
+ struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG];
+
+ if (s_mpg->vdev.v4l2_dev)
+ num = s_mpg->vdev.num + ivtv_stream_info[type].num_offset;
+ }
+ video_set_drvdata(&s->vdev, s);
+
+ /* Register device. First try the desired minor, then any free one. */
+ if (video_register_device_no_warn(&s->vdev, vfl_type, num)) {
+ IVTV_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
+ s->name, num);
+ return -ENOMEM;
+ }
+ name = video_device_node_name(&s->vdev);
+
+ switch (vfl_type) {
+ case VFL_TYPE_GRABBER:
+ IVTV_INFO("Registered device %s for %s (%d kB)\n",
+ name, s->name, itv->options.kilobytes[type]);
+ break;
+ case VFL_TYPE_RADIO:
+ IVTV_INFO("Registered device %s for %s\n",
+ name, s->name);
+ break;
+ case VFL_TYPE_VBI:
+ if (itv->options.kilobytes[type])
+ IVTV_INFO("Registered device %s for %s (%d kB)\n",
+ name, s->name, itv->options.kilobytes[type]);
+ else
+ IVTV_INFO("Registered device %s for %s\n",
+ name, s->name);
+ break;
+ }
+ return 0;
+}
+
+/* Register v4l2 devices */
+int ivtv_streams_register(struct ivtv *itv)
+{
+ int type;
+ int err = 0;
+
+ /* Register V4L2 devices */
+ for (type = 0; type < IVTV_MAX_STREAMS; type++)
+ err |= ivtv_reg_dev(itv, type);
+
+ if (err == 0)
+ return 0;
+
+ /* One or more streams could not be initialized. Clean 'em all up. */
+ ivtv_streams_cleanup(itv);
+ return -ENOMEM;
+}
+
+/* Unregister v4l2 devices */
+void ivtv_streams_cleanup(struct ivtv *itv)
+{
+ int type;
+
+ /* Teardown all streams */
+ for (type = 0; type < IVTV_MAX_STREAMS; type++) {
+ struct video_device *vdev = &itv->streams[type].vdev;
+
+ if (vdev->v4l2_dev == NULL)
+ continue;
+
+ video_unregister_device(vdev);
+ ivtv_stream_free(&itv->streams[type]);
+ itv->streams[type].vdev.v4l2_dev = NULL;
+ }
+}
+
+static void ivtv_vbi_setup(struct ivtv *itv)
+{
+ int raw = ivtv_raw_vbi(itv);
+ u32 data[CX2341X_MBOX_MAX_DATA];
+ int lines;
+ int i;
+
+ /* Reset VBI */
+ ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
+
+ /* setup VBI registers */
+ if (raw)
+ v4l2_subdev_call(itv->sd_video, vbi, s_raw_fmt, &itv->vbi.in.fmt.vbi);
+ else
+ v4l2_subdev_call(itv->sd_video, vbi, s_sliced_fmt, &itv->vbi.in.fmt.sliced);
+
+ /* determine number of lines and total number of VBI bytes.
+ A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
+ The '- 1' byte is probably an unused U or V byte. Or something...
+ A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
+ header, 42 data bytes + checksum (to be confirmed) */
+ if (raw) {
+ lines = itv->vbi.count * 2;
+ } else {
+ lines = itv->is_60hz ? 24 : 38;
+ if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
+ lines += 2;
+ }
+
+ itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
+
+ /* Note: sliced vs raw flag doesn't seem to have any effect
+ TODO: check mode (0x02) value with older ivtv versions. */
+ data[0] = raw | 0x02 | (0xbd << 8);
+
+ /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
+ data[1] = 1;
+ /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
+ data[2] = raw ? 4 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size);
+ /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
+ The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
+ is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
+ code. These values for raw VBI are obtained from a driver disassembly. The sliced
+ start/stop codes was deduced from this, but they do not appear in the driver.
+ Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
+ However, I have no idea what these values are for. */
+ if (itv->hw_flags & IVTV_HW_CX25840) {
+ /* Setup VBI for the cx25840 digitizer */
+ if (raw) {
+ data[3] = 0x20602060;
+ data[4] = 0x30703070;
+ } else {
+ data[3] = 0xB0F0B0F0;
+ data[4] = 0xA0E0A0E0;
+ }
+ /* Lines per frame */
+ data[5] = lines;
+ /* bytes per line */
+ data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
+ } else {
+ /* Setup VBI for the saa7115 digitizer */
+ if (raw) {
+ data[3] = 0x25256262;
+ data[4] = 0x387F7F7F;
+ } else {
+ data[3] = 0xABABECEC;
+ data[4] = 0xB6F1F1F1;
+ }
+ /* Lines per frame */
+ data[5] = lines;
+ /* bytes per line */
+ data[6] = itv->vbi.enc_size / lines;
+ }
+
+ IVTV_DEBUG_INFO(
+ "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
+ data[0], data[1], data[2], data[5], data[6]);
+
+ ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
+
+ /* returns the VBI encoder memory area. */
+ itv->vbi.enc_start = data[2];
+ itv->vbi.fpi = data[0];
+ if (!itv->vbi.fpi)
+ itv->vbi.fpi = 1;
+
+ IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
+ itv->vbi.enc_start, data[1], itv->vbi.fpi);
+
+ /* select VBI lines.
+ Note that the sliced argument seems to have no effect. */
+ for (i = 2; i <= 24; i++) {
+ int valid;
+
+ if (itv->is_60hz) {
+ valid = i >= 10 && i < 22;
+ } else {
+ valid = i >= 6 && i < 24;
+ }
+ ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
+ valid, 0 , 0, 0);
+ ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
+ valid, 0, 0, 0);
+ }
+
+ /* Remaining VBI questions:
+ - Is it possible to select particular VBI lines only for inclusion in the MPEG
+ stream? Currently you can only get the first X lines.
+ - Is mixed raw and sliced VBI possible?
+ - What's the meaning of the raw/sliced flag?
+ - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
+}
+
+int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
+{
+ u32 data[CX2341X_MBOX_MAX_DATA];
+ struct ivtv *itv = s->itv;
+ int captype = 0, subtype = 0;
+ int enable_passthrough = 0;
+
+ if (s->vdev.v4l2_dev == NULL)
+ return -EINVAL;
+
+ IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
+
+ switch (s->type) {
+ case IVTV_ENC_STREAM_TYPE_MPG:
+ captype = 0;
+ subtype = 3;
+
+ /* Stop Passthrough */
+ if (itv->output_mode == OUT_PASSTHROUGH) {
+ ivtv_passthrough_mode(itv, 0);
+ enable_passthrough = 1;
+ }
+ itv->mpg_data_received = itv->vbi_data_inserted = 0;
+ itv->dualwatch_jiffies = jiffies;
+ itv->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(itv->cxhdl.audio_mode);
+ itv->search_pack_header = 0;
+ break;
+
+ case IVTV_ENC_STREAM_TYPE_YUV:
+ if (itv->output_mode == OUT_PASSTHROUGH) {
+ captype = 2;
+ subtype = 11; /* video+audio+decoder */
+ break;
+ }
+ captype = 1;
+ subtype = 1;
+ break;
+ case IVTV_ENC_STREAM_TYPE_PCM:
+ captype = 1;
+ subtype = 2;
+ break;
+ case IVTV_ENC_STREAM_TYPE_VBI:
+ captype = 1;
+ subtype = 4;
+
+ itv->vbi.frame = 0;
+ itv->vbi.inserted_frame = 0;
+ memset(itv->vbi.sliced_mpeg_size,
+ 0, sizeof(itv->vbi.sliced_mpeg_size));
+ break;
+ default:
+ return -EINVAL;
+ }
+ s->subtype = subtype;
+ s->buffers_stolen = 0;
+
+ /* Clear Streamoff flags in case left from last capture */
+ clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
+
+ if (atomic_read(&itv->capturing) == 0) {
+ int digitizer;
+
+ /* Always use frame based mode. Experiments have demonstrated that byte
+ stream based mode results in dropped frames and corruption. Not often,
+ but occasionally. Many thanks go to Leonard Orb who spent a lot of
+ effort and time trying to trace the cause of the drop outs. */
+ /* 1 frame per DMA */
+ /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
+ ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
+
+ /* Stuff from Windows, we don't know what it is */
+ ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
+ /* According to the docs, this should be correct. However, this is
+ untested. I don't dare enable this without having tested it.
+ Only very few old cards actually have this hardware combination.
+ ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
+ ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
+ */
+ ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
+ ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
+ ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
+ ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
+
+ /* assign placeholder */
+ ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+
+ if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
+ digitizer = 0xF1;
+ else if (itv->card->hw_all & IVTV_HW_SAA7114)
+ digitizer = 0xEF;
+ else /* cx25840 */
+ digitizer = 0x140;
+
+ ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
+
+ /* Setup VBI */
+ if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
+ ivtv_vbi_setup(itv);
+ }
+
+ /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
+ ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
+ itv->pgm_info_offset = data[0];
+ itv->pgm_info_num = data[1];
+ itv->pgm_info_write_idx = 0;
+ itv->pgm_info_read_idx = 0;
+
+ IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
+ itv->pgm_info_offset, itv->pgm_info_num);
+
+ /* Setup API for Stream */
+ cx2341x_handler_setup(&itv->cxhdl);
+
+ /* mute if capturing radio */
+ if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
+ ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
+ 1 | (v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8));
+ }
+
+ /* Vsync Setup */
+ if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
+ /* event notification (on) */
+ ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
+ ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
+ }
+
+ if (atomic_read(&itv->capturing) == 0) {
+ /* Clear all Pending Interrupts */
+ ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
+
+ clear_bit(IVTV_F_I_EOS, &itv->i_flags);
+
+ cx2341x_handler_set_busy(&itv->cxhdl, 1);
+
+ /* Initialize Digitizer for Capture */
+ /* Avoid tinny audio problem - ensure audio clocks are going */
+ v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1);
+ /* Avoid unpredictable PCI bus hang - disable video clocks */
+ v4l2_subdev_call(itv->sd_video, video, s_stream, 0);
+ ivtv_msleep_timeout(300, 0);
+ ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
+ v4l2_subdev_call(itv->sd_video, video, s_stream, 1);
+ }
+
+ /* begin_capture */
+ if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
+ {
+ IVTV_DEBUG_WARN( "Error starting capture!\n");
+ return -EINVAL;
+ }
+
+ /* Start Passthrough */
+ if (enable_passthrough) {
+ ivtv_passthrough_mode(itv, 1);
+ }
+
+ if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
+ ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
+ else
+ ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
+
+ /* you're live! sit back and await interrupts :) */
+ atomic_inc(&itv->capturing);
+ return 0;
+}
+EXPORT_SYMBOL(ivtv_start_v4l2_encode_stream);
+
+static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
+{
+ u32 data[CX2341X_MBOX_MAX_DATA];
+ struct ivtv *itv = s->itv;
+ int datatype;
+ u16 width;
+ u16 height;
+
+ if (s->vdev.v4l2_dev == NULL)
+ return -EINVAL;
+
+ IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
+
+ width = itv->cxhdl.width;
+ height = itv->cxhdl.height;
+
+ /* set audio mode to left/stereo for dual/stereo mode. */
+ ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
+
+ /* set number of internal decoder buffers */
+ ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
+
+ /* prebuffering */
+ ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
+
+ /* extract from user packets */
+ ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
+ itv->vbi.dec_start = data[0];
+
+ IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
+ itv->vbi.dec_start, data[1]);
+
+ /* set decoder source settings */
+ /* Data type: 0 = mpeg from host,
+ 1 = yuv from encoder,
+ 2 = yuv_from_host */
+ switch (s->type) {
+ case IVTV_DEC_STREAM_TYPE_YUV:
+ if (itv->output_mode == OUT_PASSTHROUGH) {
+ datatype = 1;
+ } else {
+ /* Fake size to avoid switching video standard */
+ datatype = 2;
+ width = 720;
+ height = itv->is_out_50hz ? 576 : 480;
+ }
+ IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
+ break;
+ case IVTV_DEC_STREAM_TYPE_MPG:
+ default:
+ datatype = 0;
+ break;
+ }
+ if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
+ width, height, itv->cxhdl.audio_properties)) {
+ IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
+ }
+
+ /* Decoder sometimes dies here, so wait a moment */
+ ivtv_msleep_timeout(10, 0);
+
+ /* Known failure point for firmware, so check */
+ return ivtv_firmware_check(itv, "ivtv_setup_v4l2_decode_stream");
+}
+
+int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
+{
+ struct ivtv *itv = s->itv;
+ int rc;
+
+ if (s->vdev.v4l2_dev == NULL)
+ return -EINVAL;
+
+ if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
+ return 0; /* already started */
+
+ IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
+
+ rc = ivtv_setup_v4l2_decode_stream(s);
+ if (rc < 0) {
+ clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
+ return rc;
+ }
+
+ /* set dma size to 65536 bytes */
+ ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
+
+ /* Clear Streamoff */
+ clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
+
+ /* Zero out decoder counters */
+ writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
+ writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
+ writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
+ writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
+ writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
+ writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
+ writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
+ writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
+
+ /* turn on notification of dual/stereo mode change */
+ ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
+
+ /* start playback */
+ ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
+
+ /* Let things settle before we actually start */
+ ivtv_msleep_timeout(10, 0);
+
+ /* Clear the following Interrupt mask bits for decoding */
+ ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
+ IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
+
+ /* you're live! sit back and await interrupts :) */
+ atomic_inc(&itv->decoding);
+ return 0;
+}
+
+void ivtv_stop_all_captures(struct ivtv *itv)
+{
+ int i;
+
+ for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
+ struct ivtv_stream *s = &itv->streams[i];
+
+ if (s->vdev.v4l2_dev == NULL)
+ continue;
+ if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
+ ivtv_stop_v4l2_encode_stream(s, 0);
+ }
+ }
+}
+
+int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
+{
+ struct ivtv *itv = s->itv;
+ DECLARE_WAITQUEUE(wait, current);
+ int cap_type;
+ int stopmode;
+
+ if (s->vdev.v4l2_dev == NULL)
+ return -EINVAL;
+
+ /* This function assumes that you are allowed to stop the capture
+ and that we are actually capturing */
+
+ IVTV_DEBUG_INFO("Stop Capture\n");
+
+ if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
+ return 0;
+ if (atomic_read(&itv->capturing) == 0)
+ return 0;
+
+ switch (s->type) {
+ case IVTV_ENC_STREAM_TYPE_YUV:
+ cap_type = 1;
+ break;
+ case IVTV_ENC_STREAM_TYPE_PCM:
+ cap_type = 1;
+ break;
+ case IVTV_ENC_STREAM_TYPE_VBI:
+ cap_type = 1;
+ break;
+ case IVTV_ENC_STREAM_TYPE_MPG:
+ default:
+ cap_type = 0;
+ break;
+ }
+
+ /* Stop Capture Mode */
+ if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
+ stopmode = 0;
+ } else {
+ stopmode = 1;
+ }
+
+ /* end_capture */
+ /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
+ ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
+
+ if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
+ if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
+ /* only run these if we're shutting down the last cap */
+ unsigned long duration;
+ unsigned long then = jiffies;
+
+ add_wait_queue(&itv->eos_waitq, &wait);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ /* wait 2s for EOS interrupt */
+ while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
+ time_before(jiffies,
+ then + msecs_to_jiffies(2000))) {
+ schedule_timeout(msecs_to_jiffies(10));
+ }
+
+ /* To convert jiffies to ms, we must multiply by 1000
+ * and divide by HZ. To avoid runtime division, we
+ * convert this to multiplication by 1000/HZ.
+ * Since integer division truncates, we get the best
+ * accuracy if we do a rounding calculation of the constant.
+ * Think of the case where HZ is 1024.
+ */
+ duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
+
+ if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
+ IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
+ IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
+ } else {
+ IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&itv->eos_waitq, &wait);
+ set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
+ }
+
+ /* Handle any pending interrupts */
+ ivtv_msleep_timeout(100, 0);
+ }
+
+ atomic_dec(&itv->capturing);
+
+ /* Clear capture and no-read bits */
+ clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
+
+ if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
+ ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
+
+ if (atomic_read(&itv->capturing) > 0) {
+ return 0;
+ }
+
+ cx2341x_handler_set_busy(&itv->cxhdl, 0);
+
+ /* Set the following Interrupt mask bits for capture */
+ ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
+ del_timer(&itv->dma_timer);
+
+ /* event notification (off) */
+ if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
+ /* type: 0 = refresh */
+ /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
+ ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
+ ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
+ }
+
+ /* Raw-passthrough is implied on start. Make sure it's stopped so
+ the encoder will re-initialize when next started */
+ ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 7);
+
+ wake_up(&s->waitq);
+
+ return 0;
+}
+EXPORT_SYMBOL(ivtv_stop_v4l2_encode_stream);
+
+int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
+{
+ static const struct v4l2_event ev = {
+ .type = V4L2_EVENT_EOS,
+ };
+ struct ivtv *itv = s->itv;
+
+ if (s->vdev.v4l2_dev == NULL)
+ return -EINVAL;
+
+ if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
+ return -EINVAL;
+
+ if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
+ return 0;
+
+ IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
+
+ /* Stop Decoder */
+ if (!(flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) || pts) {
+ u32 tmp = 0;
+
+ /* Wait until the decoder is no longer running */
+ if (pts) {
+ ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
+ 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
+ }
+ while (1) {
+ u32 data[CX2341X_MBOX_MAX_DATA];
+ ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
+ if (s->q_full.buffers + s->q_dma.buffers == 0) {
+ if (tmp == data[3])
+ break;
+ tmp = data[3];
+ }
+ if (ivtv_msleep_timeout(100, 1))
+ break;
+ }
+ }
+ ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & V4L2_DEC_CMD_STOP_TO_BLACK, 0, 0);
+
+ /* turn off notification of dual/stereo mode change */
+ ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
+
+ ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
+ del_timer(&itv->dma_timer);
+
+ clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
+ clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
+ ivtv_flush_queues(s);
+
+ /* decoder needs time to settle */
+ ivtv_msleep_timeout(40, 0);
+
+ /* decrement decoding */
+ atomic_dec(&itv->decoding);
+
+ set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
+ wake_up(&itv->event_waitq);
+ v4l2_event_queue(&s->vdev, &ev);
+
+ /* wake up wait queues */
+ wake_up(&s->waitq);
+
+ return 0;
+}
+
+int ivtv_passthrough_mode(struct ivtv *itv, int enable)
+{
+ struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
+ struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
+
+ if (yuv_stream->vdev.v4l2_dev == NULL || dec_stream->vdev.v4l2_dev == NULL)
+ return -EINVAL;
+
+ IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
+
+ /* Prevent others from starting/stopping streams while we
+ initiate/terminate passthrough mode */
+ if (enable) {
+ if (itv->output_mode == OUT_PASSTHROUGH) {
+ return 0;
+ }
+ if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
+ return -EBUSY;
+
+ /* Fully initialize stream, and then unflag init */
+ set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
+ set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
+
+ /* Setup YUV Decoder */
+ ivtv_setup_v4l2_decode_stream(dec_stream);
+
+ /* Start Decoder */
+ ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
+ atomic_inc(&itv->decoding);
+
+ /* Setup capture if not already done */
+ if (atomic_read(&itv->capturing) == 0) {
+ cx2341x_handler_setup(&itv->cxhdl);
+ cx2341x_handler_set_busy(&itv->cxhdl, 1);
+ }
+
+ /* Start Passthrough Mode */
+ ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
+ atomic_inc(&itv->capturing);
+ return 0;
+ }
+
+ if (itv->output_mode != OUT_PASSTHROUGH)
+ return 0;
+
+ /* Stop Passthrough Mode */
+ ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
+ ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
+
+ atomic_dec(&itv->capturing);
+ atomic_dec(&itv->decoding);
+ clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
+ clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
+ itv->output_mode = OUT_NONE;
+ if (atomic_read(&itv->capturing) == 0)
+ cx2341x_handler_set_busy(&itv->cxhdl, 0);
+
+ return 0;
+}