diff options
Diffstat (limited to 'drivers/media/pci/cx18/cx18-streams.c')
| -rw-r--r-- | drivers/media/pci/cx18/cx18-streams.c | 1060 |
1 files changed, 1060 insertions, 0 deletions
diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c new file mode 100644 index 000000000000..9d598ab88615 --- /dev/null +++ b/drivers/media/pci/cx18/cx18-streams.c @@ -0,0 +1,1060 @@ +/* + * 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; + enum v4l2_buf_type buf_type; +} cx18_stream_info[] = { + { /* CX18_ENC_STREAM_TYPE_MPG */ + "encoder MPEG", + VFL_TYPE_GRABBER, 0, + PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, + }, + { /* CX18_ENC_STREAM_TYPE_TS */ + "TS", + VFL_TYPE_GRABBER, -1, + PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, + }, + { /* CX18_ENC_STREAM_TYPE_YUV */ + "encoder YUV", + VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET, + PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, + }, + { /* CX18_ENC_STREAM_TYPE_VBI */ + "encoder VBI", + VFL_TYPE_VBI, 0, + PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VBI_CAPTURE, + }, + { /* CX18_ENC_STREAM_TYPE_PCM */ + "encoder PCM audio", + VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET, + PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_PRIVATE, + }, + { /* CX18_ENC_STREAM_TYPE_IDX */ + "encoder IDX", + VFL_TYPE_GRABBER, -1, + PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, + }, + { /* CX18_ENC_STREAM_TYPE_RAD */ + "encoder radio", + VFL_TYPE_RADIO, 0, + PCI_DMA_NONE, V4L2_BUF_TYPE_PRIVATE, + }, +}; + + +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]; + struct video_device *video_dev = s->video_dev; + + /* we need to keep video_dev, so restore it afterwards */ + memset(s, 0, sizeof(*s)); + s->video_dev = video_dev; + + /* 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->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; + } +} + +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 == 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 = 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; + + /* allocate and initialize the v4l2 video device structure */ + s->video_dev = video_device_alloc(); + if (s->video_dev == NULL) { + CX18_ERR("Couldn't allocate v4l2 video_device for %s\n", + s->name); + return -ENOMEM; + } + + 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; + s->video_dev->tvnorms = V4L2_STD_ALL; + s->video_dev->lock = &cx->serialize_lock; + set_bit(V4L2_FL_USE_FH_PRIO, &s->video_dev->flags); + 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 == 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) + 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); + video_device_release(s->video_dev); + s->video_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; + + cx->streams[type].video_dev = NULL; + if (vdev == NULL) + continue; + + if (type == CX18_ENC_STREAM_TYPE_YUV) + videobuf_mmap_free(&cx->streams[type].vbuf_q); + + cx18_stream_free(&cx->streams[type]); + + /* Unregister or release device */ + if (unregister) + video_unregister_device(vdev); + else + video_device_release(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 && (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; +} |
