diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-streams.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-streams.c | 1060 |
1 files changed, 0 insertions, 1060 deletions
diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c deleted file mode 100644 index 9d598ab88615..000000000000 --- a/drivers/media/video/cx18/cx18-streams.c +++ /dev/null @@ -1,1060 +0,0 @@ -/* - * 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; -} |