Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 1 | /* |
| 2 | * cx18 init/start/stop/exit stream functions |
| 3 | * |
| 4 | * Derived from ivtv-streams.c |
| 5 | * |
| 6 | * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> |
Andy Walls | 1ed9dcc | 2008-11-22 01:37:34 -0300 | [diff] [blame] | 7 | * Copyright (C) 2008 Andy Walls <awalls@radix.net> |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 22 | * 02111-1307 USA |
| 23 | */ |
| 24 | |
| 25 | #include "cx18-driver.h" |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 26 | #include "cx18-io.h" |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 27 | #include "cx18-fileops.h" |
| 28 | #include "cx18-mailbox.h" |
| 29 | #include "cx18-i2c.h" |
| 30 | #include "cx18-queue.h" |
| 31 | #include "cx18-ioctl.h" |
| 32 | #include "cx18-streams.h" |
| 33 | #include "cx18-cards.h" |
| 34 | #include "cx18-scb.h" |
| 35 | #include "cx18-av-core.h" |
| 36 | #include "cx18-dvb.h" |
| 37 | |
| 38 | #define CX18_DSP0_INTERRUPT_MASK 0xd0004C |
| 39 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame^] | 40 | static struct v4l2_file_operations cx18_v4l2_enc_fops = { |
Hans Verkuil | daf20d9 | 2008-05-12 11:21:58 -0300 | [diff] [blame] | 41 | .owner = THIS_MODULE, |
| 42 | .read = cx18_v4l2_read, |
| 43 | .open = cx18_v4l2_open, |
Andy Walls | 3b6fe58 | 2008-06-21 08:36:31 -0300 | [diff] [blame] | 44 | /* FIXME change to video_ioctl2 if serialization lock can be removed */ |
Hans Verkuil | daf20d9 | 2008-05-12 11:21:58 -0300 | [diff] [blame] | 45 | .ioctl = cx18_v4l2_ioctl, |
Hans Verkuil | daf20d9 | 2008-05-12 11:21:58 -0300 | [diff] [blame] | 46 | .release = cx18_v4l2_close, |
| 47 | .poll = cx18_v4l2_enc_poll, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 48 | }; |
| 49 | |
| 50 | /* offset from 0 to register ts v4l2 minors on */ |
| 51 | #define CX18_V4L2_ENC_TS_OFFSET 16 |
| 52 | /* offset from 0 to register pcm v4l2 minors on */ |
| 53 | #define CX18_V4L2_ENC_PCM_OFFSET 24 |
| 54 | /* offset from 0 to register yuv v4l2 minors on */ |
| 55 | #define CX18_V4L2_ENC_YUV_OFFSET 32 |
| 56 | |
| 57 | static struct { |
| 58 | const char *name; |
| 59 | int vfl_type; |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 60 | int num_offset; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 61 | int dma; |
| 62 | enum v4l2_buf_type buf_type; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 63 | } cx18_stream_info[] = { |
| 64 | { /* CX18_ENC_STREAM_TYPE_MPG */ |
| 65 | "encoder MPEG", |
| 66 | VFL_TYPE_GRABBER, 0, |
| 67 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 68 | }, |
| 69 | { /* CX18_ENC_STREAM_TYPE_TS */ |
| 70 | "TS", |
| 71 | VFL_TYPE_GRABBER, -1, |
| 72 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 73 | }, |
| 74 | { /* CX18_ENC_STREAM_TYPE_YUV */ |
| 75 | "encoder YUV", |
| 76 | VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET, |
| 77 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 78 | }, |
| 79 | { /* CX18_ENC_STREAM_TYPE_VBI */ |
| 80 | "encoder VBI", |
| 81 | VFL_TYPE_VBI, 0, |
| 82 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VBI_CAPTURE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 83 | }, |
| 84 | { /* CX18_ENC_STREAM_TYPE_PCM */ |
| 85 | "encoder PCM audio", |
| 86 | VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET, |
| 87 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_PRIVATE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 88 | }, |
| 89 | { /* CX18_ENC_STREAM_TYPE_IDX */ |
| 90 | "encoder IDX", |
| 91 | VFL_TYPE_GRABBER, -1, |
| 92 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 93 | }, |
| 94 | { /* CX18_ENC_STREAM_TYPE_RAD */ |
| 95 | "encoder radio", |
| 96 | VFL_TYPE_RADIO, 0, |
| 97 | PCI_DMA_NONE, V4L2_BUF_TYPE_PRIVATE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 98 | }, |
| 99 | }; |
| 100 | |
| 101 | static void cx18_stream_init(struct cx18 *cx, int type) |
| 102 | { |
| 103 | struct cx18_stream *s = &cx->streams[type]; |
| 104 | struct video_device *dev = s->v4l2dev; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 105 | |
| 106 | /* we need to keep v4l2dev, so restore it afterwards */ |
| 107 | memset(s, 0, sizeof(*s)); |
| 108 | s->v4l2dev = dev; |
| 109 | |
| 110 | /* initialize cx18_stream fields */ |
| 111 | s->cx = cx; |
| 112 | s->type = type; |
| 113 | s->name = cx18_stream_info[type].name; |
Andy Walls | d3c5e70 | 2008-08-23 16:42:29 -0300 | [diff] [blame] | 114 | s->handle = CX18_INVALID_TASK_HANDLE; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 115 | |
| 116 | s->dma = cx18_stream_info[type].dma; |
Andy Walls | 6ecd86d | 2008-12-07 23:30:17 -0300 | [diff] [blame] | 117 | s->buffers = cx->stream_buffers[type]; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 118 | s->buf_size = cx->stream_buf_size[type]; |
Andy Walls | 6ecd86d | 2008-12-07 23:30:17 -0300 | [diff] [blame] | 119 | |
Andy Walls | f576cee | 2008-11-16 20:18:05 -0300 | [diff] [blame] | 120 | mutex_init(&s->qlock); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 121 | init_waitqueue_head(&s->waitq); |
| 122 | s->id = -1; |
| 123 | cx18_queue_init(&s->q_free); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 124 | cx18_queue_init(&s->q_busy); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 125 | cx18_queue_init(&s->q_full); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | static int cx18_prep_dev(struct cx18 *cx, int type) |
| 129 | { |
| 130 | struct cx18_stream *s = &cx->streams[type]; |
| 131 | u32 cap = cx->v4l2_cap; |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 132 | int num_offset = cx18_stream_info[type].num_offset; |
| 133 | int num = cx->num + cx18_first_minor + num_offset; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 134 | |
| 135 | /* These four fields are always initialized. If v4l2dev == NULL, then |
| 136 | this stream is not in use. In that case no other fields but these |
| 137 | four can be used. */ |
| 138 | s->v4l2dev = NULL; |
| 139 | s->cx = cx; |
| 140 | s->type = type; |
| 141 | s->name = cx18_stream_info[type].name; |
| 142 | |
| 143 | /* Check whether the radio is supported */ |
| 144 | if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO)) |
| 145 | return 0; |
| 146 | |
| 147 | /* Check whether VBI is supported */ |
| 148 | if (type == CX18_ENC_STREAM_TYPE_VBI && |
| 149 | !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE))) |
| 150 | return 0; |
| 151 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 152 | /* User explicitly selected 0 buffers for these streams, so don't |
| 153 | create them. */ |
| 154 | if (cx18_stream_info[type].dma != PCI_DMA_NONE && |
Andy Walls | 6ecd86d | 2008-12-07 23:30:17 -0300 | [diff] [blame] | 155 | cx->stream_buffers[type] == 0) { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 156 | CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name); |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | cx18_stream_init(cx, type); |
| 161 | |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 162 | if (num_offset == -1) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 163 | return 0; |
| 164 | |
| 165 | /* allocate and initialize the v4l2 video device structure */ |
| 166 | s->v4l2dev = video_device_alloc(); |
| 167 | if (s->v4l2dev == NULL) { |
| 168 | CX18_ERR("Couldn't allocate v4l2 video_device for %s\n", |
| 169 | s->name); |
| 170 | return -ENOMEM; |
| 171 | } |
| 172 | |
Hans Verkuil | 37f89f9 | 2008-06-22 11:57:31 -0300 | [diff] [blame] | 173 | snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "cx18-%d", |
| 174 | cx->num); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 175 | |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 176 | s->v4l2dev->num = num; |
Hans Verkuil | 5e85e73 | 2008-07-20 06:31:39 -0300 | [diff] [blame] | 177 | s->v4l2dev->parent = &cx->dev->dev; |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame^] | 178 | s->v4l2dev->fops = &cx18_v4l2_enc_fops; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 179 | s->v4l2dev->release = video_device_release; |
Andy Walls | 3b6fe58 | 2008-06-21 08:36:31 -0300 | [diff] [blame] | 180 | s->v4l2dev->tvnorms = V4L2_STD_ALL; |
| 181 | cx18_set_funcs(s->v4l2dev); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 182 | return 0; |
| 183 | } |
| 184 | |
| 185 | /* Initialize v4l2 variables and register v4l2 devices */ |
| 186 | int cx18_streams_setup(struct cx18 *cx) |
| 187 | { |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 188 | int type, ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 189 | |
| 190 | /* Setup V4L2 Devices */ |
| 191 | for (type = 0; type < CX18_MAX_STREAMS; type++) { |
| 192 | /* Prepare device */ |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 193 | ret = cx18_prep_dev(cx, type); |
| 194 | if (ret < 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 195 | break; |
| 196 | |
| 197 | /* Allocate Stream */ |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 198 | ret = cx18_stream_alloc(&cx->streams[type]); |
| 199 | if (ret < 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 200 | break; |
| 201 | } |
| 202 | if (type == CX18_MAX_STREAMS) |
| 203 | return 0; |
| 204 | |
| 205 | /* One or more streams could not be initialized. Clean 'em all up. */ |
Hans Verkuil | 3f98387 | 2008-05-01 10:31:12 -0300 | [diff] [blame] | 206 | cx18_streams_cleanup(cx, 0); |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 207 | return ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 208 | } |
| 209 | |
| 210 | static int cx18_reg_dev(struct cx18 *cx, int type) |
| 211 | { |
| 212 | struct cx18_stream *s = &cx->streams[type]; |
| 213 | int vfl_type = cx18_stream_info[type].vfl_type; |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 214 | int num, ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 215 | |
| 216 | /* TODO: Shouldn't this be a VFL_TYPE_TRANSPORT or something? |
| 217 | * We need a VFL_TYPE_TS defined. |
| 218 | */ |
| 219 | if (strcmp("TS", s->name) == 0) { |
| 220 | /* just return if no DVB is supported */ |
| 221 | if ((cx->card->hw_all & CX18_HW_DVB) == 0) |
| 222 | return 0; |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 223 | ret = cx18_dvb_register(s); |
| 224 | if (ret < 0) { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 225 | CX18_ERR("DVB failed to register\n"); |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 226 | return ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 227 | } |
| 228 | } |
| 229 | |
| 230 | if (s->v4l2dev == NULL) |
| 231 | return 0; |
| 232 | |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 233 | num = s->v4l2dev->num; |
| 234 | /* card number + user defined offset + device offset */ |
| 235 | if (type != CX18_ENC_STREAM_TYPE_MPG) { |
| 236 | struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG]; |
| 237 | |
| 238 | if (s_mpg->v4l2dev) |
| 239 | num = s_mpg->v4l2dev->num + cx18_stream_info[type].num_offset; |
| 240 | } |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 241 | |
| 242 | /* Register device. First try the desired minor, then any free one. */ |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 243 | ret = video_register_device(s->v4l2dev, vfl_type, num); |
| 244 | if (ret < 0) { |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 245 | CX18_ERR("Couldn't register v4l2 device for %s kernel number %d\n", |
| 246 | s->name, num); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 247 | video_device_release(s->v4l2dev); |
| 248 | s->v4l2dev = NULL; |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 249 | return ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 250 | } |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 251 | num = s->v4l2dev->num; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 252 | |
| 253 | switch (vfl_type) { |
| 254 | case VFL_TYPE_GRABBER: |
Andy Walls | 6ecd86d | 2008-12-07 23:30:17 -0300 | [diff] [blame] | 255 | CX18_INFO("Registered device video%d for %s (%d x %d kB)\n", |
| 256 | num, s->name, cx->stream_buffers[type], |
| 257 | cx->stream_buf_size[type]/1024); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 258 | break; |
| 259 | |
| 260 | case VFL_TYPE_RADIO: |
| 261 | CX18_INFO("Registered device radio%d for %s\n", |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 262 | num, s->name); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 263 | break; |
| 264 | |
| 265 | case VFL_TYPE_VBI: |
Andy Walls | 6ecd86d | 2008-12-07 23:30:17 -0300 | [diff] [blame] | 266 | if (cx->stream_buffers[type]) |
| 267 | CX18_INFO("Registered device vbi%d for %s " |
| 268 | "(%d x %d bytes)\n", |
| 269 | num, s->name, cx->stream_buffers[type], |
| 270 | cx->stream_buf_size[type]); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 271 | else |
| 272 | CX18_INFO("Registered device vbi%d for %s\n", |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 273 | num, s->name); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 274 | break; |
| 275 | } |
| 276 | |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | /* Register v4l2 devices */ |
| 281 | int cx18_streams_register(struct cx18 *cx) |
| 282 | { |
| 283 | int type; |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 284 | int err; |
| 285 | int ret = 0; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 286 | |
| 287 | /* Register V4L2 devices */ |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 288 | for (type = 0; type < CX18_MAX_STREAMS; type++) { |
| 289 | err = cx18_reg_dev(cx, type); |
| 290 | if (err && ret == 0) |
| 291 | ret = err; |
| 292 | } |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 293 | |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 294 | if (ret == 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 295 | return 0; |
| 296 | |
| 297 | /* One or more streams could not be initialized. Clean 'em all up. */ |
Hans Verkuil | 3f98387 | 2008-05-01 10:31:12 -0300 | [diff] [blame] | 298 | cx18_streams_cleanup(cx, 1); |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 299 | return ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | /* Unregister v4l2 devices */ |
Hans Verkuil | 3f98387 | 2008-05-01 10:31:12 -0300 | [diff] [blame] | 303 | void cx18_streams_cleanup(struct cx18 *cx, int unregister) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 304 | { |
| 305 | struct video_device *vdev; |
| 306 | int type; |
| 307 | |
| 308 | /* Teardown all streams */ |
| 309 | for (type = 0; type < CX18_MAX_STREAMS; type++) { |
Hans Verkuil | fac3639 | 2008-07-18 10:07:10 -0300 | [diff] [blame] | 310 | if (cx->streams[type].dvb.enabled) { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 311 | cx18_dvb_unregister(&cx->streams[type]); |
Hans Verkuil | fac3639 | 2008-07-18 10:07:10 -0300 | [diff] [blame] | 312 | cx->streams[type].dvb.enabled = false; |
| 313 | } |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 314 | |
| 315 | vdev = cx->streams[type].v4l2dev; |
| 316 | |
| 317 | cx->streams[type].v4l2dev = NULL; |
| 318 | if (vdev == NULL) |
| 319 | continue; |
| 320 | |
| 321 | cx18_stream_free(&cx->streams[type]); |
| 322 | |
Hans Verkuil | 3f98387 | 2008-05-01 10:31:12 -0300 | [diff] [blame] | 323 | /* Unregister or release device */ |
| 324 | if (unregister) |
| 325 | video_unregister_device(vdev); |
| 326 | else |
| 327 | video_device_release(vdev); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 328 | } |
| 329 | } |
| 330 | |
| 331 | static void cx18_vbi_setup(struct cx18_stream *s) |
| 332 | { |
| 333 | struct cx18 *cx = s->cx; |
Andy Walls | dd07343 | 2008-12-12 16:24:04 -0300 | [diff] [blame] | 334 | int raw = cx18_raw_vbi(cx); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 335 | u32 data[CX2341X_MBOX_MAX_DATA]; |
| 336 | int lines; |
| 337 | |
| 338 | if (cx->is_60hz) { |
| 339 | cx->vbi.count = 12; |
| 340 | cx->vbi.start[0] = 10; |
| 341 | cx->vbi.start[1] = 273; |
| 342 | } else { /* PAL/SECAM */ |
| 343 | cx->vbi.count = 18; |
| 344 | cx->vbi.start[0] = 6; |
| 345 | cx->vbi.start[1] = 318; |
| 346 | } |
| 347 | |
| 348 | /* setup VBI registers */ |
| 349 | cx18_av_cmd(cx, VIDIOC_S_FMT, &cx->vbi.in); |
| 350 | |
| 351 | /* determine number of lines and total number of VBI bytes. |
Andy Walls | af009cf | 2008-12-12 20:00:29 -0300 | [diff] [blame] | 352 | A raw line takes 1444 bytes: 4 byte SAV code + 2 * 720 |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 353 | A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal |
| 354 | header, 42 data bytes + checksum (to be confirmed) */ |
| 355 | if (raw) { |
| 356 | lines = cx->vbi.count * 2; |
| 357 | } else { |
| 358 | lines = cx->is_60hz ? 24 : 38; |
| 359 | if (cx->is_60hz) |
| 360 | lines += 2; |
| 361 | } |
| 362 | |
| 363 | cx->vbi.enc_size = lines * |
| 364 | (raw ? cx->vbi.raw_size : cx->vbi.sliced_size); |
| 365 | |
| 366 | data[0] = s->handle; |
| 367 | /* Lines per field */ |
| 368 | data[1] = (lines / 2) | ((lines / 2) << 16); |
| 369 | /* bytes per line */ |
Andy Walls | af009cf | 2008-12-12 20:00:29 -0300 | [diff] [blame] | 370 | data[2] = (raw ? cx->vbi.raw_decoder_line_size |
| 371 | : cx->vbi.sliced_decoder_line_size); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 372 | /* Every X number of frames a VBI interrupt arrives |
| 373 | (frames as in 25 or 30 fps) */ |
| 374 | data[3] = 1; |
| 375 | /* Setup VBI for the cx25840 digitizer */ |
| 376 | if (raw) { |
| 377 | data[4] = 0x20602060; |
Andy Walls | af009cf | 2008-12-12 20:00:29 -0300 | [diff] [blame] | 378 | data[5] = 0x307090d0; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 379 | } else { |
| 380 | data[4] = 0xB0F0B0F0; |
| 381 | data[5] = 0xA0E0A0E0; |
| 382 | } |
| 383 | |
| 384 | CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n", |
| 385 | data[0], data[1], data[2], data[3], data[4], data[5]); |
| 386 | |
| 387 | if (s->type == CX18_ENC_STREAM_TYPE_VBI) |
| 388 | cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data); |
| 389 | } |
| 390 | |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 391 | struct cx18_queue *cx18_stream_put_buf_fw(struct cx18_stream *s, |
| 392 | struct cx18_buffer *buf) |
| 393 | { |
| 394 | struct cx18 *cx = s->cx; |
| 395 | struct cx18_queue *q; |
| 396 | |
| 397 | /* Don't give it to the firmware, if we're not running a capture */ |
| 398 | if (s->handle == CX18_INVALID_TASK_HANDLE || |
| 399 | !test_bit(CX18_F_S_STREAMING, &s->s_flags)) |
| 400 | return cx18_enqueue(s, buf, &s->q_free); |
| 401 | |
| 402 | q = cx18_enqueue(s, buf, &s->q_busy); |
| 403 | if (q != &s->q_busy) |
| 404 | return q; /* The firmware has the max buffers it can handle */ |
| 405 | |
| 406 | cx18_buf_sync_for_device(s, buf); |
| 407 | cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle, |
| 408 | (void __iomem *) &cx->scb->cpu_mdl[buf->id] - cx->enc_mem, |
| 409 | 1, buf->id, s->buf_size); |
| 410 | return q; |
| 411 | } |
| 412 | |
Andy Walls | abb096d | 2008-12-12 15:50:27 -0300 | [diff] [blame] | 413 | void cx18_stream_load_fw_queue(struct cx18_stream *s) |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 414 | { |
Andy Walls | abb096d | 2008-12-12 15:50:27 -0300 | [diff] [blame] | 415 | struct cx18_queue *q; |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 416 | struct cx18_buffer *buf; |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 417 | |
Andy Walls | abb096d | 2008-12-12 15:50:27 -0300 | [diff] [blame] | 418 | if (atomic_read(&s->q_free.buffers) == 0 || |
Andy Walls | 0ef0289 | 2008-12-14 18:52:12 -0300 | [diff] [blame] | 419 | atomic_read(&s->q_busy.buffers) >= CX18_MAX_FW_MDLS_PER_STREAM) |
Andy Walls | abb096d | 2008-12-12 15:50:27 -0300 | [diff] [blame] | 420 | return; |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 421 | |
Andy Walls | abb096d | 2008-12-12 15:50:27 -0300 | [diff] [blame] | 422 | /* Move from q_free to q_busy notifying the firmware, until the limit */ |
| 423 | do { |
| 424 | buf = cx18_dequeue(s, &s->q_free); |
| 425 | if (buf == NULL) |
| 426 | break; |
| 427 | q = cx18_stream_put_buf_fw(s, buf); |
Andy Walls | 0ef0289 | 2008-12-14 18:52:12 -0300 | [diff] [blame] | 428 | } while (atomic_read(&s->q_busy.buffers) < CX18_MAX_FW_MDLS_PER_STREAM |
| 429 | && q == &s->q_busy); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 430 | } |
| 431 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 432 | int cx18_start_v4l2_encode_stream(struct cx18_stream *s) |
| 433 | { |
| 434 | u32 data[MAX_MB_ARGUMENTS]; |
| 435 | struct cx18 *cx = s->cx; |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 436 | struct cx18_buffer *buf; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 437 | int ts = 0; |
| 438 | int captype = 0; |
| 439 | |
| 440 | if (s->v4l2dev == NULL && s->dvb.enabled == 0) |
| 441 | return -EINVAL; |
| 442 | |
| 443 | CX18_DEBUG_INFO("Start encoder stream %s\n", s->name); |
| 444 | |
| 445 | switch (s->type) { |
| 446 | case CX18_ENC_STREAM_TYPE_MPG: |
| 447 | captype = CAPTURE_CHANNEL_TYPE_MPEG; |
| 448 | cx->mpg_data_received = cx->vbi_data_inserted = 0; |
| 449 | cx->dualwatch_jiffies = jiffies; |
| 450 | cx->dualwatch_stereo_mode = cx->params.audio_properties & 0x300; |
| 451 | cx->search_pack_header = 0; |
| 452 | break; |
| 453 | |
| 454 | case CX18_ENC_STREAM_TYPE_TS: |
| 455 | captype = CAPTURE_CHANNEL_TYPE_TS; |
| 456 | ts = 1; |
| 457 | break; |
| 458 | case CX18_ENC_STREAM_TYPE_YUV: |
| 459 | captype = CAPTURE_CHANNEL_TYPE_YUV; |
| 460 | break; |
| 461 | case CX18_ENC_STREAM_TYPE_PCM: |
| 462 | captype = CAPTURE_CHANNEL_TYPE_PCM; |
| 463 | break; |
| 464 | case CX18_ENC_STREAM_TYPE_VBI: |
Andy Walls | dd07343 | 2008-12-12 16:24:04 -0300 | [diff] [blame] | 465 | captype = cx18_raw_vbi(cx) ? |
| 466 | CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 467 | cx->vbi.frame = 0; |
| 468 | cx->vbi.inserted_frame = 0; |
| 469 | memset(cx->vbi.sliced_mpeg_size, |
| 470 | 0, sizeof(cx->vbi.sliced_mpeg_size)); |
| 471 | break; |
| 472 | default: |
| 473 | return -EINVAL; |
| 474 | } |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 475 | |
| 476 | /* mute/unmute video */ |
| 477 | cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, |
| 478 | s->handle, !!test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)); |
| 479 | |
| 480 | /* Clear Streamoff flags in case left from last capture */ |
| 481 | clear_bit(CX18_F_S_STREAMOFF, &s->s_flags); |
| 482 | |
| 483 | cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE); |
| 484 | s->handle = data[0]; |
| 485 | cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype); |
| 486 | |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 487 | if (atomic_read(&cx->ana_capturing) == 0 && !ts) { |
Andy Walls | 50b86ba | 2008-11-23 19:16:44 -0300 | [diff] [blame] | 488 | struct cx18_api_func_private priv; |
| 489 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 490 | /* Stuff from Windows, we don't know what it is */ |
| 491 | cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0); |
| 492 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1); |
| 493 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0); |
| 494 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1); |
| 495 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2, s->handle, 12); |
| 496 | |
| 497 | cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3, |
| 498 | s->handle, cx->digitizer, cx->digitizer); |
| 499 | |
| 500 | /* Setup VBI */ |
| 501 | if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE) |
| 502 | cx18_vbi_setup(s); |
| 503 | |
| 504 | /* assign program index info. |
| 505 | Mask 7: select I/P/B, Num_req: 400 max */ |
| 506 | cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 1, 0); |
| 507 | |
| 508 | /* Setup API for Stream */ |
Andy Walls | 50b86ba | 2008-11-23 19:16:44 -0300 | [diff] [blame] | 509 | priv.cx = cx; |
| 510 | priv.s = s; |
| 511 | cx2341x_update(&priv, cx18_api_func, NULL, &cx->params); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 512 | } |
| 513 | |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 514 | if (atomic_read(&cx->tot_capturing) == 0) { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 515 | clear_bit(CX18_F_I_EOS, &cx->i_flags); |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 516 | cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 517 | } |
| 518 | |
| 519 | cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle, |
Al Viro | 990c81c | 2008-05-21 00:32:01 -0300 | [diff] [blame] | 520 | (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem, |
| 521 | (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 522 | |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 523 | /* Init all the cpu_mdls for this stream */ |
| 524 | cx18_flush_queues(s); |
| 525 | mutex_lock(&s->qlock); |
Andy Walls | f6b181a | 2008-12-14 21:05:36 -0300 | [diff] [blame] | 526 | list_for_each_entry(buf, &s->q_free.list, list) { |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 527 | cx18_writel(cx, buf->dma_handle, |
| 528 | &cx->scb->cpu_mdl[buf->id].paddr); |
| 529 | cx18_writel(cx, s->buf_size, &cx->scb->cpu_mdl[buf->id].length); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 530 | } |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 531 | mutex_unlock(&s->qlock); |
Andy Walls | abb096d | 2008-12-12 15:50:27 -0300 | [diff] [blame] | 532 | cx18_stream_load_fw_queue(s); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 533 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 534 | /* begin_capture */ |
| 535 | if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) { |
| 536 | CX18_DEBUG_WARN("Error starting capture!\n"); |
Andy Walls | 3b5df8e | 2008-08-23 18:36:50 -0300 | [diff] [blame] | 537 | /* Ensure we're really not capturing before releasing MDLs */ |
| 538 | if (s->type == CX18_ENC_STREAM_TYPE_MPG) |
| 539 | cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1); |
| 540 | else |
| 541 | cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 542 | clear_bit(CX18_F_S_STREAMING, &s->s_flags); |
| 543 | /* FIXME - CX18_F_S_STREAMOFF as well? */ |
Andy Walls | 3b5df8e | 2008-08-23 18:36:50 -0300 | [diff] [blame] | 544 | cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 545 | cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 546 | s->handle = CX18_INVALID_TASK_HANDLE; |
| 547 | if (atomic_read(&cx->tot_capturing) == 0) { |
| 548 | set_bit(CX18_F_I_EOS, &cx->i_flags); |
| 549 | cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); |
| 550 | } |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 551 | return -EINVAL; |
| 552 | } |
| 553 | |
| 554 | /* you're live! sit back and await interrupts :) */ |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 555 | if (!ts) |
| 556 | atomic_inc(&cx->ana_capturing); |
| 557 | atomic_inc(&cx->tot_capturing); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | void cx18_stop_all_captures(struct cx18 *cx) |
| 562 | { |
| 563 | int i; |
| 564 | |
| 565 | for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) { |
| 566 | struct cx18_stream *s = &cx->streams[i]; |
| 567 | |
| 568 | if (s->v4l2dev == NULL && s->dvb.enabled == 0) |
| 569 | continue; |
| 570 | if (test_bit(CX18_F_S_STREAMING, &s->s_flags)) |
| 571 | cx18_stop_v4l2_encode_stream(s, 0); |
| 572 | } |
| 573 | } |
| 574 | |
| 575 | int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end) |
| 576 | { |
| 577 | struct cx18 *cx = s->cx; |
| 578 | unsigned long then; |
| 579 | |
| 580 | if (s->v4l2dev == NULL && s->dvb.enabled == 0) |
| 581 | return -EINVAL; |
| 582 | |
| 583 | /* This function assumes that you are allowed to stop the capture |
| 584 | and that we are actually capturing */ |
| 585 | |
| 586 | CX18_DEBUG_INFO("Stop Capture\n"); |
| 587 | |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 588 | if (atomic_read(&cx->tot_capturing) == 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 589 | return 0; |
| 590 | |
| 591 | if (s->type == CX18_ENC_STREAM_TYPE_MPG) |
| 592 | cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end); |
| 593 | else |
| 594 | cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); |
| 595 | |
| 596 | then = jiffies; |
| 597 | |
| 598 | if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) { |
| 599 | CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n"); |
| 600 | } |
| 601 | |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 602 | if (s->type != CX18_ENC_STREAM_TYPE_TS) |
| 603 | atomic_dec(&cx->ana_capturing); |
| 604 | atomic_dec(&cx->tot_capturing); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 605 | |
| 606 | /* Clear capture and no-read bits */ |
| 607 | clear_bit(CX18_F_S_STREAMING, &s->s_flags); |
| 608 | |
Andy Walls | f68d0cf | 2008-11-05 21:19:15 -0300 | [diff] [blame] | 609 | /* Tell the CX23418 it can't use our buffers anymore */ |
| 610 | cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); |
| 611 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 612 | cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); |
Andy Walls | d3c5e70 | 2008-08-23 16:42:29 -0300 | [diff] [blame] | 613 | s->handle = CX18_INVALID_TASK_HANDLE; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 614 | |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 615 | if (atomic_read(&cx->tot_capturing) > 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 616 | return 0; |
| 617 | |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 618 | cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 619 | wake_up(&s->waitq); |
| 620 | |
| 621 | return 0; |
| 622 | } |
| 623 | |
| 624 | u32 cx18_find_handle(struct cx18 *cx) |
| 625 | { |
| 626 | int i; |
| 627 | |
| 628 | /* find first available handle to be used for global settings */ |
| 629 | for (i = 0; i < CX18_MAX_STREAMS; i++) { |
| 630 | struct cx18_stream *s = &cx->streams[i]; |
| 631 | |
Andy Walls | d3c5e70 | 2008-08-23 16:42:29 -0300 | [diff] [blame] | 632 | if (s->v4l2dev && (s->handle != CX18_INVALID_TASK_HANDLE)) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 633 | return s->handle; |
| 634 | } |
Andy Walls | d3c5e70 | 2008-08-23 16:42:29 -0300 | [diff] [blame] | 635 | return CX18_INVALID_TASK_HANDLE; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 636 | } |
Andy Walls | ee2d64f | 2008-11-16 01:38:19 -0300 | [diff] [blame] | 637 | |
| 638 | struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle) |
| 639 | { |
| 640 | int i; |
| 641 | struct cx18_stream *s; |
| 642 | |
| 643 | if (handle == CX18_INVALID_TASK_HANDLE) |
| 644 | return NULL; |
| 645 | |
| 646 | for (i = 0; i < CX18_MAX_STREAMS; i++) { |
| 647 | s = &cx->streams[i]; |
| 648 | if (s->handle != handle) |
| 649 | continue; |
| 650 | if (s->v4l2dev || s->dvb.enabled) |
| 651 | return s; |
| 652 | } |
| 653 | return NULL; |
| 654 | } |