--- /dev/null
+/*
+ * cx18 init/start/stop/exit stream functions
+ *
+ * Derived from ivtv-streams.c
+ *
+ * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
+ * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
+ *
+ * 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
+ */
+
+#include "cx18-driver.h"
+#include "cx18-io.h"
+#include "cx18-fileops.h"
+#include "cx18-mailbox.h"
+#include "cx18-i2c.h"
+#include "cx18-queue.h"
+#include "cx18-ioctl.h"
+#include "cx18-streams.h"
+#include "cx18-cards.h"
+#include "cx18-scb.h"
+#include "cx18-dvb.h"
+
+#define CX18_DSP0_INTERRUPT_MASK 0xd0004C
+
+static struct v4l2_file_operations cx18_v4l2_enc_fops = {
+ .owner = THIS_MODULE,
+ .read = cx18_v4l2_read,
+ .open = cx18_v4l2_open,
+ .unlocked_ioctl = video_ioctl2,
+ .release = cx18_v4l2_close,
+ .poll = cx18_v4l2_enc_poll,
+ .mmap = cx18_v4l2_mmap,
+};
+
+/* offset from 0 to register ts v4l2 minors on */
+#define CX18_V4L2_ENC_TS_OFFSET 16
+/* offset from 0 to register pcm v4l2 minors on */
+#define CX18_V4L2_ENC_PCM_OFFSET 24
+/* offset from 0 to register yuv v4l2 minors on */
+#define CX18_V4L2_ENC_YUV_OFFSET 32
+
+static struct {
+ const char *name;
+ int vfl_type;
+ int num_offset;
+ int dma;
+ u32 caps;
+} cx18_stream_info[] = {
+ { /* CX18_ENC_STREAM_TYPE_MPG */
+ "encoder MPEG",
+ VFL_TYPE_GRABBER, 0,
+ PCI_DMA_FROMDEVICE,
+ V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
+ V4L2_CAP_AUDIO | V4L2_CAP_TUNER
+ },
+ { /* CX18_ENC_STREAM_TYPE_TS */
+ "TS",
+ VFL_TYPE_GRABBER, -1,
+ PCI_DMA_FROMDEVICE,
+ },
+ { /* CX18_ENC_STREAM_TYPE_YUV */
+ "encoder YUV",
+ VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET,
+ PCI_DMA_FROMDEVICE,
+ V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
+ V4L2_CAP_STREAMING | V4L2_CAP_AUDIO | V4L2_CAP_TUNER
+ },
+ { /* CX18_ENC_STREAM_TYPE_VBI */
+ "encoder VBI",
+ VFL_TYPE_VBI, 0,
+ PCI_DMA_FROMDEVICE,
+ V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE |
+ V4L2_CAP_READWRITE | V4L2_CAP_TUNER
+ },
+ { /* CX18_ENC_STREAM_TYPE_PCM */
+ "encoder PCM audio",
+ VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET,
+ PCI_DMA_FROMDEVICE,
+ },
+ { /* CX18_ENC_STREAM_TYPE_IDX */
+ "encoder IDX",
+ VFL_TYPE_GRABBER, -1,
+ PCI_DMA_FROMDEVICE,
+ },
+ { /* CX18_ENC_STREAM_TYPE_RAD */
+ "encoder radio",
+ VFL_TYPE_RADIO, 0,
+ PCI_DMA_NONE,
+ V4L2_CAP_RADIO | V4L2_CAP_TUNER
+ },
+};
+
+
+static void cx18_dma_free(struct videobuf_queue *q,
+ struct cx18_stream *s, struct cx18_videobuf_buffer *buf)
+{
+ videobuf_waiton(q, &buf->vb, 0, 0);
+ videobuf_vmalloc_free(&buf->vb);
+ buf->vb.state = VIDEOBUF_NEEDS_INIT;
+}
+
+static int cx18_prepare_buffer(struct videobuf_queue *q,
+ struct cx18_stream *s,
+ struct cx18_videobuf_buffer *buf,
+ u32 pixelformat,
+ unsigned int width, unsigned int height,
+ enum v4l2_field field)
+{
+ struct cx18 *cx = s->cx;
+ int rc = 0;
+
+ /* check settings */
+ buf->bytes_used = 0;
+
+ if ((width < 48) || (height < 32))
+ return -EINVAL;
+
+ buf->vb.size = (width * height * 2);
+ if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
+ return -EINVAL;
+
+ /* alloc + fill struct (if changed) */
+ if (buf->vb.width != width || buf->vb.height != height ||
+ buf->vb.field != field || s->pixelformat != pixelformat ||
+ buf->tvnorm != cx->std) {
+
+ buf->vb.width = width;
+ buf->vb.height = height;
+ buf->vb.field = field;
+ buf->tvnorm = cx->std;
+ s->pixelformat = 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 = height * 720 * 3 / 2;
+ else
+ s->vb_bytes_per_frame = height * 720 * 2;
+ cx18_dma_free(q, s, buf);
+ }
+
+ if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
+ return -EINVAL;
+
+ if (buf->vb.field == 0)
+ buf->vb.field = V4L2_FIELD_INTERLACED;
+
+ if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
+ buf->vb.width = width;
+ buf->vb.height = height;
+ buf->vb.field = field;
+ buf->tvnorm = cx->std;
+ s->pixelformat = 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 = height * 720 * 3 / 2;
+ else
+ s->vb_bytes_per_frame = height * 720 * 2;
+ rc = videobuf_iolock(q, &buf->vb, NULL);
+ if (rc != 0)
+ goto fail;
+ }
+ buf->vb.state = VIDEOBUF_PREPARED;
+ return 0;
+
+fail:
+ cx18_dma_free(q, s, buf);
+ return rc;
+
+}
+
+/* VB_MIN_BUFSIZE is lcm(1440 * 480, 1440 * 576)
+ 1440 is a single line of 4:2:2 YUV at 720 luma samples wide
+*/
+#define VB_MIN_BUFFERS 32
+#define VB_MIN_BUFSIZE 4147200
+
+static int buffer_setup(struct videobuf_queue *q,
+ unsigned int *count, unsigned int *size)
+{
+ struct cx18_stream *s = q->priv_data;
+ struct cx18 *cx = s->cx;
+
+ *size = 2 * cx->cxhdl.width * cx->cxhdl.height;
+ if (*count == 0)
+ *count = VB_MIN_BUFFERS;
+
+ while (*size * *count > VB_MIN_BUFFERS * VB_MIN_BUFSIZE)
+ (*count)--;
+
+ q->field = V4L2_FIELD_INTERLACED;
+ q->last = V4L2_FIELD_INTERLACED;
+
+ return 0;
+}
+
+static int buffer_prepare(struct videobuf_queue *q,
+ struct videobuf_buffer *vb,
+ enum v4l2_field field)
+{
+ struct cx18_videobuf_buffer *buf =
+ container_of(vb, struct cx18_videobuf_buffer, vb);
+ struct cx18_stream *s = q->priv_data;
+ struct cx18 *cx = s->cx;
+
+ return cx18_prepare_buffer(q, s, buf, s->pixelformat,
+ cx->cxhdl.width, cx->cxhdl.height, field);
+}
+
+static void buffer_release(struct videobuf_queue *q,
+ struct videobuf_buffer *vb)
+{
+ struct cx18_videobuf_buffer *buf =
+ container_of(vb, struct cx18_videobuf_buffer, vb);
+ struct cx18_stream *s = q->priv_data;
+
+ cx18_dma_free(q, s, buf);
+}
+
+static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
+{
+ struct cx18_videobuf_buffer *buf =
+ container_of(vb, struct cx18_videobuf_buffer, vb);
+ struct cx18_stream *s = q->priv_data;
+
+ buf->vb.state = VIDEOBUF_QUEUED;
+
+ list_add_tail(&buf->vb.queue, &s->vb_capture);
+}
+
+static struct videobuf_queue_ops cx18_videobuf_qops = {
+ .buf_setup = buffer_setup,
+ .buf_prepare = buffer_prepare,
+ .buf_queue = buffer_queue,
+ .buf_release = buffer_release,
+};
+
+static void cx18_stream_init(struct cx18 *cx, int type)
+{
+ struct cx18_stream *s = &cx->streams[type];
+
+ memset(s, 0, sizeof(*s));
+
+ /* initialize cx18_stream fields */
+ s->dvb = NULL;
+ s->cx = cx;
+ s->type = type;
+ s->name = cx18_stream_info[type].name;
+ s->handle = CX18_INVALID_TASK_HANDLE;
+
+ s->dma = cx18_stream_info[type].dma;
+ s->v4l2_dev_caps = cx18_stream_info[type].caps;
+ s->buffers = cx->stream_buffers[type];
+ s->buf_size = cx->stream_buf_size[type];
+ INIT_LIST_HEAD(&s->buf_pool);
+ s->bufs_per_mdl = 1;
+ s->mdl_size = s->buf_size * s->bufs_per_mdl;
+
+ init_waitqueue_head(&s->waitq);
+ s->id = -1;
+ spin_lock_init(&s->q_free.lock);
+ cx18_queue_init(&s->q_free);
+ spin_lock_init(&s->q_busy.lock);
+ cx18_queue_init(&s->q_busy);
+ spin_lock_init(&s->q_full.lock);
+ cx18_queue_init(&s->q_full);
+ spin_lock_init(&s->q_idle.lock);
+ cx18_queue_init(&s->q_idle);
+
+ INIT_WORK(&s->out_work_order, cx18_out_work_handler);
+
+ INIT_LIST_HEAD(&s->vb_capture);
+ s->vb_timeout.function = cx18_vb_timeout;
+ s->vb_timeout.data = (unsigned long)s;
+ init_timer(&s->vb_timeout);
+ spin_lock_init(&s->vb_lock);
+ if (type == CX18_ENC_STREAM_TYPE_YUV) {
+ spin_lock_init(&s->vbuf_q_lock);
+
+ s->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ videobuf_queue_vmalloc_init(&s->vbuf_q, &cx18_videobuf_qops,
+ &cx->pci_dev->dev, &s->vbuf_q_lock,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ V4L2_FIELD_INTERLACED,
+ sizeof(struct cx18_videobuf_buffer),
+ s, &cx->serialize_lock);
+
+ /* Assume the previous pixel default */
+ s->pixelformat = V4L2_PIX_FMT_HM12;
+ s->vb_bytes_per_frame = cx->cxhdl.height * 720 * 3 / 2;
+ s->vb_bytes_per_line = 720;
+ }
+}
+
+static int cx18_prep_dev(struct cx18 *cx, int type)
+{
+ struct cx18_stream *s = &cx->streams[type];
+ u32 cap = cx->v4l2_cap;
+ int num_offset = cx18_stream_info[type].num_offset;
+ int num = cx->instance + cx18_first_minor + num_offset;
+
+ /*
+ * These five fields are always initialized.
+ * For analog capture related streams, if video_dev.v4l2_dev == NULL then the
+ * stream is not in use.
+ * For the TS stream, if dvb == NULL then the stream is not in use.
+ * In those cases no other fields but these four can be used.
+ */
+ s->video_dev.v4l2_dev = NULL;
+ s->dvb = NULL;
+ s->cx = cx;
+ s->type = type;
+ s->name = cx18_stream_info[type].name;
+
+ /* Check whether the radio is supported */
+ if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO))
+ return 0;
+
+ /* Check whether VBI is supported */
+ if (type == CX18_ENC_STREAM_TYPE_VBI &&
+ !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE)))
+ return 0;
+
+ /* User explicitly selected 0 buffers for these streams, so don't
+ create them. */
+ if (cx18_stream_info[type].dma != PCI_DMA_NONE &&
+ cx->stream_buffers[type] == 0) {
+ CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
+ return 0;
+ }
+
+ cx18_stream_init(cx, type);
+
+ /* Allocate the cx18_dvb struct only for the TS on cards with DTV */
+ if (type == CX18_ENC_STREAM_TYPE_TS) {
+ if (cx->card->hw_all & CX18_HW_DVB) {
+ s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL);
+ if (s->dvb == NULL) {
+ CX18_ERR("Couldn't allocate cx18_dvb structure"
+ " for %s\n", s->name);
+ return -ENOMEM;
+ }
+ } else {
+ /* Don't need buffers for the TS, if there is no DVB */
+ s->buffers = 0;
+ }
+ }
+
+ if (num_offset == -1)
+ return 0;
+
+ /* initialize the v4l2 video device structure */
+ snprintf(s->video_dev.name, sizeof(s->video_dev.name), "%s %s",
+ cx->v4l2_dev.name, s->name);
+
+ s->video_dev.num = num;
+ s->video_dev.v4l2_dev = &cx->v4l2_dev;
+ s->video_dev.fops = &cx18_v4l2_enc_fops;
+ s->video_dev.release = video_device_release_empty;
+ if (cx->card->video_inputs->video_type == CX18_CARD_INPUT_VID_TUNER)
+ s->video_dev.tvnorms = cx->tuner_std;
+ else
+ s->video_dev.tvnorms = V4L2_STD_ALL;
+ s->video_dev.lock = &cx->serialize_lock;
+ cx18_set_funcs(&s->video_dev);
+ return 0;
+}
+
+/* Initialize v4l2 variables and register v4l2 devices */
+int cx18_streams_setup(struct cx18 *cx)
+{
+ int type, ret;
+
+ /* Setup V4L2 Devices */
+ for (type = 0; type < CX18_MAX_STREAMS; type++) {
+ /* Prepare device */
+ ret = cx18_prep_dev(cx, type);
+ if (ret < 0)
+ break;
+
+ /* Allocate Stream */
+ ret = cx18_stream_alloc(&cx->streams[type]);
+ if (ret < 0)
+ break;
+ }
+ if (type == CX18_MAX_STREAMS)
+ return 0;
+
+ /* One or more streams could not be initialized. Clean 'em all up. */
+ cx18_streams_cleanup(cx, 0);
+ return ret;
+}
+
+static int cx18_reg_dev(struct cx18 *cx, int type)
+{
+ struct cx18_stream *s = &cx->streams[type];
+ int vfl_type = cx18_stream_info[type].vfl_type;
+ const char *name;
+ int num, ret;
+
+ if (type == CX18_ENC_STREAM_TYPE_TS && s->dvb != NULL) {
+ ret = cx18_dvb_register(s);
+ if (ret < 0) {
+ CX18_ERR("DVB failed to register\n");
+ return ret;
+ }
+ }
+
+ if (s->video_dev.v4l2_dev == NULL)
+ return 0;
+
+ num = s->video_dev.num;
+ /* card number + user defined offset + device offset */
+ if (type != CX18_ENC_STREAM_TYPE_MPG) {
+ struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG];
+
+ if (s_mpg->video_dev.v4l2_dev)
+ num = s_mpg->video_dev.num
+ + cx18_stream_info[type].num_offset;
+ }
+ video_set_drvdata(&s->video_dev, s);
+
+ /* Register device. First try the desired minor, then any free one. */
+ ret = video_register_device_no_warn(&s->video_dev, vfl_type, num);
+ if (ret < 0) {
+ CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
+ s->name, num);
+ s->video_dev.v4l2_dev = NULL;
+ return ret;
+ }
+
+ name = video_device_node_name(&s->video_dev);
+
+ switch (vfl_type) {
+ case VFL_TYPE_GRABBER:
+ CX18_INFO("Registered device %s for %s (%d x %d.%02d kB)\n",
+ name, s->name, cx->stream_buffers[type],
+ cx->stream_buf_size[type] / 1024,
+ (cx->stream_buf_size[type] * 100 / 1024) % 100);
+ break;
+
+ case VFL_TYPE_RADIO:
+ CX18_INFO("Registered device %s for %s\n", name, s->name);
+ break;
+
+ case VFL_TYPE_VBI:
+ if (cx->stream_buffers[type])
+ CX18_INFO("Registered device %s for %s "
+ "(%d x %d bytes)\n",
+ name, s->name, cx->stream_buffers[type],
+ cx->stream_buf_size[type]);
+ else
+ CX18_INFO("Registered device %s for %s\n",
+ name, s->name);
+ break;
+ }
+
+ return 0;
+}
+
+/* Register v4l2 devices */
+int cx18_streams_register(struct cx18 *cx)
+{
+ int type;
+ int err;
+ int ret = 0;
+
+ /* Register V4L2 devices */
+ for (type = 0; type < CX18_MAX_STREAMS; type++) {
+ err = cx18_reg_dev(cx, type);
+ if (err && ret == 0)
+ ret = err;
+ }
+
+ if (ret == 0)
+ return 0;
+
+ /* One or more streams could not be initialized. Clean 'em all up. */
+ cx18_streams_cleanup(cx, 1);
+ return ret;
+}
+
+/* Unregister v4l2 devices */
+void cx18_streams_cleanup(struct cx18 *cx, int unregister)
+{
+ struct video_device *vdev;
+ int type;
+
+ /* Teardown all streams */
+ for (type = 0; type < CX18_MAX_STREAMS; type++) {
+
+ /* The TS has a cx18_dvb structure, not a video_device */
+ if (type == CX18_ENC_STREAM_TYPE_TS) {
+ if (cx->streams[type].dvb != NULL) {
+ if (unregister)
+ cx18_dvb_unregister(&cx->streams[type]);
+ kfree(cx->streams[type].dvb);
+ cx->streams[type].dvb = NULL;
+ cx18_stream_free(&cx->streams[type]);
+ }
+ continue;
+ }
+
+ /* No struct video_device, but can have buffers allocated */
+ if (type == CX18_ENC_STREAM_TYPE_IDX) {
+ /* If the module params didn't inhibit IDX ... */
+ if (cx->stream_buffers[type] != 0) {
+ cx->stream_buffers[type] = 0;
+ /*
+ * Before calling cx18_stream_free(),
+ * check if the IDX stream was actually set up.
+ * Needed, since the cx18_probe() error path
+ * exits through here as well as normal clean up
+ */
+ if (cx->streams[type].buffers != 0)
+ cx18_stream_free(&cx->streams[type]);
+ }
+ continue;
+ }
+
+ /* If struct video_device exists, can have buffers allocated */
+ vdev = &cx->streams[type].video_dev;
+
+ if (vdev->v4l2_dev == NULL)
+ continue;
+
+ if (type == CX18_ENC_STREAM_TYPE_YUV)
+ videobuf_mmap_free(&cx->streams[type].vbuf_q);
+
+ cx18_stream_free(&cx->streams[type]);
+
+ video_unregister_device(vdev);
+ }
+}
+
+static void cx18_vbi_setup(struct cx18_stream *s)
+{
+ struct cx18 *cx = s->cx;
+ int raw = cx18_raw_vbi(cx);
+ u32 data[CX2341X_MBOX_MAX_DATA];
+ int lines;
+
+ if (cx->is_60hz) {
+ cx->vbi.count = 12;
+ cx->vbi.start[0] = 10;
+ cx->vbi.start[1] = 273;
+ } else { /* PAL/SECAM */
+ cx->vbi.count = 18;
+ cx->vbi.start[0] = 6;
+ cx->vbi.start[1] = 318;
+ }
+
+ /* setup VBI registers */
+ if (raw)
+ v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &cx->vbi.in.fmt.vbi);
+ else
+ v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &cx->vbi.in.fmt.sliced);
+
+ /*
+ * Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw
+ * VBI when the first analog capture channel starts, as once it starts
+ * (e.g. MPEG), we can't effect any change in the Encoder Raw VBI setup
+ * (i.e. for the VBI capture channels). We also send it for each
+ * analog capture channel anyway just to make sure we get the proper
+ * behavior
+ */
+ if (raw) {
+ lines = cx->vbi.count * 2;
+ } else {
+ /*
+ * For 525/60 systems, according to the VIP 2 & BT.656 std:
+ * The EAV RP code's Field bit toggles on line 4, a few lines
+ * after the Vertcal Blank bit has already toggled.
+ * Tell the encoder to capture 21-4+1=18 lines per field,
+ * since we want lines 10 through 21.
+ *
+ * For 625/50 systems, according to the VIP 2 & BT.656 std:
+ * The EAV RP code's Field bit toggles on line 1, a few lines
+ * after the Vertcal Blank bit has already toggled.
+ * (We've actually set the digitizer so that the Field bit
+ * toggles on line 2.) Tell the encoder to capture 23-2+1=22
+ * lines per field, since we want lines 6 through 23.
+ */
+ lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2;
+ }
+
+ data[0] = s->handle;
+ /* Lines per field */
+ data[1] = (lines / 2) | ((lines / 2) << 16);
+ /* bytes per line */
+ data[2] = (raw ? vbi_active_samples
+ : (cx->is_60hz ? vbi_hblank_samples_60Hz
+ : vbi_hblank_samples_50Hz));
+ /* Every X number of frames a VBI interrupt arrives
+ (frames as in 25 or 30 fps) */
+ data[3] = 1;
+ /*
+ * Set the SAV/EAV RP codes to look for as start/stop points
+ * when in VIP-1.1 mode
+ */
+ if (raw) {
+ /*
+ * Start codes for beginning of "active" line in vertical blank
+ * 0x20 ( VerticalBlank )
+ * 0x60 ( EvenField VerticalBlank )
+ */
+ data[4] = 0x20602060;
+ /*
+ * End codes for end of "active" raw lines and regular lines
+ * 0x30 ( VerticalBlank HorizontalBlank)
+ * 0x70 ( EvenField VerticalBlank HorizontalBlank)
+ * 0x90 (Task HorizontalBlank)
+ * 0xd0 (Task EvenField HorizontalBlank)
+ */
+ data[5] = 0x307090d0;
+ } else {
+ /*
+ * End codes for active video, we want data in the hblank region
+ * 0xb0 (Task 0 VerticalBlank HorizontalBlank)
+ * 0xf0 (Task EvenField VerticalBlank HorizontalBlank)
+ *
+ * Since the V bit is only allowed to toggle in the EAV RP code,
+ * just before the first active region line, these two
+ * are problematic:
+ * 0x90 (Task HorizontalBlank)
+ * 0xd0 (Task EvenField HorizontalBlank)
+ *
+ * We have set the digitzer such that we don't have to worry
+ * about these problem codes.
+ */
+ data[4] = 0xB0F0B0F0;
+ /*
+ * Start codes for beginning of active line in vertical blank
+ * 0xa0 (Task VerticalBlank )
+ * 0xe0 (Task EvenField VerticalBlank )
+ */
+ data[5] = 0xA0E0A0E0;
+ }
+
+ CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n",
+ data[0], data[1], data[2], data[3], data[4], data[5]);
+
+ cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data);
+}
+
+void cx18_stream_rotate_idx_mdls(struct cx18 *cx)
+{
+ struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
+ struct cx18_mdl *mdl;
+
+ if (!cx18_stream_enabled(s))
+ return;
+
+ /* Return if the firmware is not running low on MDLs */
+ if ((atomic_read(&s->q_free.depth) + atomic_read(&s->q_busy.depth)) >=
+ CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN)
+ return;
+
+ /* Return if there are no MDLs to rotate back to the firmware */
+ if (atomic_read(&s->q_full.depth) < 2)
+ return;
+
+ /*
+ * Take the oldest IDX MDL still holding data, and discard its index
+ * entries by scheduling the MDL to go back to the firmware
+ */
+ mdl = cx18_dequeue(s, &s->q_full);
+ if (mdl != NULL)
+ cx18_enqueue(s, mdl, &s->q_free);
+}
+
+static
+struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s,
+ struct cx18_mdl *mdl)
+{
+ struct cx18 *cx = s->cx;
+ struct cx18_queue *q;
+
+ /* Don't give it to the firmware, if we're not running a capture */
+ if (s->handle == CX18_INVALID_TASK_HANDLE ||
+ test_bit(CX18_F_S_STOPPING, &s->s_flags) ||
+ !test_bit(CX18_F_S_STREAMING, &s->s_flags))
+ return cx18_enqueue(s, mdl, &s->q_free);
+
+ q = cx18_enqueue(s, mdl, &s->q_busy);
+ if (q != &s->q_busy)
+ return q; /* The firmware has the max MDLs it can handle */
+
+ cx18_mdl_sync_for_device(s, mdl);
+ cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
+ (void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem,
+ s->bufs_per_mdl, mdl->id, s->mdl_size);
+ return q;
+}
+
+static
+void _cx18_stream_load_fw_queue(struct cx18_stream *s)
+{
+ struct cx18_queue *q;
+ struct cx18_mdl *mdl;
+
+ if (atomic_read(&s->q_free.depth) == 0 ||
+ atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM)
+ return;
+
+ /* Move from q_free to q_busy notifying the firmware, until the limit */
+ do {
+ mdl = cx18_dequeue(s, &s->q_free);
+ if (mdl == NULL)
+ break;
+ q = _cx18_stream_put_mdl_fw(s, mdl);
+ } while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM
+ && q == &s->q_busy);
+}
+
+void cx18_out_work_handler(struct work_struct *work)
+{
+ struct cx18_stream *s =
+ container_of(work, struct cx18_stream, out_work_order);
+
+ _cx18_stream_load_fw_queue(s);
+}
+
+static void cx18_stream_configure_mdls(struct cx18_stream *s)
+{
+ cx18_unload_queues(s);
+
+ switch (s->type) {
+ case CX18_ENC_STREAM_TYPE_YUV:
+ /*
+ * Height should be a multiple of 32 lines.
+ * Set the MDL size to the exact size needed for one frame.
+ * Use enough buffers per MDL to cover the MDL size
+ */
+ if (s->pixelformat == V4L2_PIX_FMT_HM12)
+ s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2;
+ else
+ s->mdl_size = 720 * s->cx->cxhdl.height * 2;
+ s->bufs_per_mdl = s->mdl_size / s->buf_size;
+ if (s->mdl_size % s->buf_size)
+ s->bufs_per_mdl++;
+ break;
+ case CX18_ENC_STREAM_TYPE_VBI:
+ s->bufs_per_mdl = 1;
+ if (cx18_raw_vbi(s->cx)) {
+ s->mdl_size = (s->cx->is_60hz ? 12 : 18)
+ * 2 * vbi_active_samples;
+ } else {
+ /*
+ * See comment in cx18_vbi_setup() below about the
+ * extra lines we capture in sliced VBI mode due to
+ * the lines on which EAV RP codes toggle.
+ */
+ s->mdl_size = s->cx->is_60hz
+ ? (21 - 4 + 1) * 2 * vbi_hblank_samples_60Hz
+ : (23 - 2 + 1) * 2 * vbi_hblank_samples_50Hz;
+ }
+ break;
+ default:
+ s->bufs_per_mdl = 1;
+ s->mdl_size = s->buf_size * s->bufs_per_mdl;
+ break;
+ }
+
+ cx18_load_queues(s);
+}
+
+int cx18_start_v4l2_encode_stream(struct cx18_stream *s)
+{
+ u32 data[MAX_MB_ARGUMENTS];
+ struct cx18 *cx = s->cx;
+ int captype = 0;
+ struct cx18_stream *s_idx;
+
+ if (!cx18_stream_enabled(s))
+ return -EINVAL;
+
+ CX18_DEBUG_INFO("Start encoder stream %s\n", s->name);
+
+ switch (s->type) {
+ case CX18_ENC_STREAM_TYPE_MPG:
+ captype = CAPTURE_CHANNEL_TYPE_MPEG;
+ cx->mpg_data_received = cx->vbi_data_inserted = 0;
+ cx->dualwatch_jiffies = jiffies;
+ cx->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(cx->cxhdl.audio_mode);
+ cx->search_pack_header = 0;
+ break;
+
+ case CX18_ENC_STREAM_TYPE_IDX:
+ captype = CAPTURE_CHANNEL_TYPE_INDEX;
+ break;
+ case CX18_ENC_STREAM_TYPE_TS:
+ captype = CAPTURE_CHANNEL_TYPE_TS;
+ break;
+ case CX18_ENC_STREAM_TYPE_YUV:
+ captype = CAPTURE_CHANNEL_TYPE_YUV;
+ break;
+ case CX18_ENC_STREAM_TYPE_PCM:
+ captype = CAPTURE_CHANNEL_TYPE_PCM;
+ break;
+ case CX18_ENC_STREAM_TYPE_VBI:
+#ifdef CX18_ENCODER_PARSES_SLICED
+ captype = cx18_raw_vbi(cx) ?
+ CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI;
+#else
+ /*
+ * Currently we set things up so that Sliced VBI from the
+ * digitizer is handled as Raw VBI by the encoder
+ */
+ captype = CAPTURE_CHANNEL_TYPE_VBI;
+#endif
+ cx->vbi.frame = 0;
+ cx->vbi.inserted_frame = 0;
+ memset(cx->vbi.sliced_mpeg_size,
+ 0, sizeof(cx->vbi.sliced_mpeg_size));
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Clear Streamoff flags in case left from last capture */
+ clear_bit(CX18_F_S_STREAMOFF, &s->s_flags);
+
+ cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE);
+ s->handle = data[0];
+ cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype);
+
+ /*
+ * For everything but CAPTURE_CHANNEL_TYPE_TS, play it safe and
+ * set up all the parameters, as it is not obvious which parameters the
+ * firmware shares across capture channel types and which it does not.
+ *
+ * Some of the cx18_vapi() calls below apply to only certain capture
+ * channel types. We're hoping there's no harm in calling most of them
+ * anyway, as long as the values are all consistent. Setting some
+ * shared parameters will have no effect once an analog capture channel
+ * has started streaming.
+ */
+ if (captype != CAPTURE_CHANNEL_TYPE_TS) {
+ cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0);
+ cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1);
+ cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0);
+ cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1);
+
+ /*
+ * Audio related reset according to
+ * Documentation/video4linux/cx2341x/fw-encoder-api.txt
+ */
+ if (atomic_read(&cx->ana_capturing) == 0)
+ cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2,
+ s->handle, 12);
+
+ /*
+ * Number of lines for Field 1 & Field 2 according to
+ * Documentation/video4linux/cx2341x/fw-encoder-api.txt
+ * Field 1 is 312 for 625 line systems in BT.656
+ * Field 2 is 313 for 625 line systems in BT.656
+ */
+ cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3,
+ s->handle, 312, 313);
+
+ if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE)
+ cx18_vbi_setup(s);
+
+ /*
+ * Select to receive I, P, and B frame index entries, if the
+ * index stream is enabled. Otherwise disable index entry
+ * generation.
+ */
+ s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
+ cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2,
+ s->handle, cx18_stream_enabled(s_idx) ? 7 : 0);
+
+ /* Call out to the common CX2341x API setup for user controls */
+ cx->cxhdl.priv = s;
+ cx2341x_handler_setup(&cx->cxhdl);
+
+ /*
+ * When starting a capture and we're set for radio,
+ * ensure the video is muted, despite the user control.
+ */
+ if (!cx->cxhdl.video_mute &&
+ test_bit(CX18_F_I_RADIO_USER, &cx->i_flags))
+ cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle,
+ (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1);
+
+ /* Enable the Video Format Converter for UYVY 4:2:2 support,
+ * rather than the default HM12 Macroblovk 4:2:0 support.
+ */
+ if (captype == CAPTURE_CHANNEL_TYPE_YUV) {
+ if (s->pixelformat == V4L2_PIX_FMT_UYVY)
+ cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
+ s->handle, 1);
+ else
+ /* If in doubt, default to HM12 */
+ cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
+ s->handle, 0);
+ }
+ }
+
+ if (atomic_read(&cx->tot_capturing) == 0) {
+ cx2341x_handler_set_busy(&cx->cxhdl, 1);
+ clear_bit(CX18_F_I_EOS, &cx->i_flags);
+ cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK);
+ }
+
+ cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle,
+ (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem,
+ (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem);
+
+ /* Init all the cpu_mdls for this stream */
+ cx18_stream_configure_mdls(s);
+ _cx18_stream_load_fw_queue(s);
+
+ /* begin_capture */
+ if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) {
+ CX18_DEBUG_WARN("Error starting capture!\n");
+ /* Ensure we're really not capturing before releasing MDLs */
+ set_bit(CX18_F_S_STOPPING, &s->s_flags);
+ if (s->type == CX18_ENC_STREAM_TYPE_MPG)
+ cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1);
+ else
+ cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
+ clear_bit(CX18_F_S_STREAMING, &s->s_flags);
+ /* FIXME - CX18_F_S_STREAMOFF as well? */
+ cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
+ cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
+ s->handle = CX18_INVALID_TASK_HANDLE;
+ clear_bit(CX18_F_S_STOPPING, &s->s_flags);
+ if (atomic_read(&cx->tot_capturing) == 0) {
+ set_bit(CX18_F_I_EOS, &cx->i_flags);
+ cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
+ }
+ return -EINVAL;
+ }
+
+ /* you're live! sit back and await interrupts :) */
+ if (captype != CAPTURE_CHANNEL_TYPE_TS)
+ atomic_inc(&cx->ana_capturing);
+ atomic_inc(&cx->tot_capturing);
+ return 0;
+}
+EXPORT_SYMBOL(cx18_start_v4l2_encode_stream);
+
+void cx18_stop_all_captures(struct cx18 *cx)
+{
+ int i;
+
+ for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) {
+ struct cx18_stream *s = &cx->streams[i];
+
+ if (!cx18_stream_enabled(s))
+ continue;
+ if (test_bit(CX18_F_S_STREAMING, &s->s_flags))
+ cx18_stop_v4l2_encode_stream(s, 0);
+ }
+}
+
+int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end)
+{
+ struct cx18 *cx = s->cx;
+
+ if (!cx18_stream_enabled(s))
+ return -EINVAL;
+
+ /* This function assumes that you are allowed to stop the capture
+ and that we are actually capturing */
+
+ CX18_DEBUG_INFO("Stop Capture\n");
+
+ if (atomic_read(&cx->tot_capturing) == 0)
+ return 0;
+
+ set_bit(CX18_F_S_STOPPING, &s->s_flags);
+ if (s->type == CX18_ENC_STREAM_TYPE_MPG)
+ cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end);
+ else
+ cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
+
+ if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) {
+ CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n");
+ }
+
+ if (s->type != CX18_ENC_STREAM_TYPE_TS)
+ atomic_dec(&cx->ana_capturing);
+ atomic_dec(&cx->tot_capturing);
+
+ /* Clear capture and no-read bits */
+ clear_bit(CX18_F_S_STREAMING, &s->s_flags);
+
+ /* Tell the CX23418 it can't use our buffers anymore */
+ cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
+
+ cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
+ s->handle = CX18_INVALID_TASK_HANDLE;
+ clear_bit(CX18_F_S_STOPPING, &s->s_flags);
+
+ if (atomic_read(&cx->tot_capturing) > 0)
+ return 0;
+
+ cx2341x_handler_set_busy(&cx->cxhdl, 0);
+ cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
+ wake_up(&s->waitq);
+
+ return 0;
+}
+EXPORT_SYMBOL(cx18_stop_v4l2_encode_stream);
+
+u32 cx18_find_handle(struct cx18 *cx)
+{
+ int i;
+
+ /* find first available handle to be used for global settings */
+ for (i = 0; i < CX18_MAX_STREAMS; i++) {
+ struct cx18_stream *s = &cx->streams[i];
+
+ if (s->video_dev.v4l2_dev && (s->handle != CX18_INVALID_TASK_HANDLE))
+ return s->handle;
+ }
+ return CX18_INVALID_TASK_HANDLE;
+}
+
+struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle)
+{
+ int i;
+ struct cx18_stream *s;
+
+ if (handle == CX18_INVALID_TASK_HANDLE)
+ return NULL;
+
+ for (i = 0; i < CX18_MAX_STREAMS; i++) {
+ s = &cx->streams[i];
+ if (s->handle != handle)
+ continue;
+ if (cx18_stream_enabled(s))
+ return s;
+ }
+ return NULL;
+}
Code Review / kvmfornfv.git / blobdiff