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 | 6afdeaf | 2010-05-23 18:53:35 -0300 | [diff] [blame] | 7 | * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.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" |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 35 | #include "cx18-dvb.h" |
| 36 | |
| 37 | #define CX18_DSP0_INTERRUPT_MASK 0xd0004C |
| 38 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 39 | static struct v4l2_file_operations cx18_v4l2_enc_fops = { |
Hans Verkuil | daf20d9 | 2008-05-12 11:21:58 -0300 | [diff] [blame] | 40 | .owner = THIS_MODULE, |
| 41 | .read = cx18_v4l2_read, |
| 42 | .open = cx18_v4l2_open, |
Andy Walls | 3b6fe58 | 2008-06-21 08:36:31 -0300 | [diff] [blame] | 43 | /* FIXME change to video_ioctl2 if serialization lock can be removed */ |
Hans Verkuil | 78b055b | 2010-11-19 17:04:31 -0300 | [diff] [blame] | 44 | .unlocked_ioctl = cx18_v4l2_ioctl, |
Hans Verkuil | daf20d9 | 2008-05-12 11:21:58 -0300 | [diff] [blame] | 45 | .release = cx18_v4l2_close, |
| 46 | .poll = cx18_v4l2_enc_poll, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 47 | }; |
| 48 | |
| 49 | /* offset from 0 to register ts v4l2 minors on */ |
| 50 | #define CX18_V4L2_ENC_TS_OFFSET 16 |
| 51 | /* offset from 0 to register pcm v4l2 minors on */ |
| 52 | #define CX18_V4L2_ENC_PCM_OFFSET 24 |
| 53 | /* offset from 0 to register yuv v4l2 minors on */ |
| 54 | #define CX18_V4L2_ENC_YUV_OFFSET 32 |
| 55 | |
| 56 | static struct { |
| 57 | const char *name; |
| 58 | int vfl_type; |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 59 | int num_offset; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 60 | int dma; |
| 61 | enum v4l2_buf_type buf_type; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 62 | } cx18_stream_info[] = { |
| 63 | { /* CX18_ENC_STREAM_TYPE_MPG */ |
| 64 | "encoder MPEG", |
| 65 | VFL_TYPE_GRABBER, 0, |
| 66 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 67 | }, |
| 68 | { /* CX18_ENC_STREAM_TYPE_TS */ |
| 69 | "TS", |
| 70 | VFL_TYPE_GRABBER, -1, |
| 71 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 72 | }, |
| 73 | { /* CX18_ENC_STREAM_TYPE_YUV */ |
| 74 | "encoder YUV", |
| 75 | VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET, |
| 76 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 77 | }, |
| 78 | { /* CX18_ENC_STREAM_TYPE_VBI */ |
| 79 | "encoder VBI", |
| 80 | VFL_TYPE_VBI, 0, |
| 81 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VBI_CAPTURE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 82 | }, |
| 83 | { /* CX18_ENC_STREAM_TYPE_PCM */ |
| 84 | "encoder PCM audio", |
| 85 | VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET, |
| 86 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_PRIVATE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 87 | }, |
| 88 | { /* CX18_ENC_STREAM_TYPE_IDX */ |
| 89 | "encoder IDX", |
| 90 | VFL_TYPE_GRABBER, -1, |
| 91 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 92 | }, |
| 93 | { /* CX18_ENC_STREAM_TYPE_RAD */ |
| 94 | "encoder radio", |
| 95 | VFL_TYPE_RADIO, 0, |
| 96 | PCI_DMA_NONE, V4L2_BUF_TYPE_PRIVATE, |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 97 | }, |
| 98 | }; |
| 99 | |
| 100 | static void cx18_stream_init(struct cx18 *cx, int type) |
| 101 | { |
| 102 | struct cx18_stream *s = &cx->streams[type]; |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 103 | struct video_device *video_dev = s->video_dev; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 104 | |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 105 | /* we need to keep video_dev, so restore it afterwards */ |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 106 | memset(s, 0, sizeof(*s)); |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 107 | s->video_dev = video_dev; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 108 | |
| 109 | /* initialize cx18_stream fields */ |
Andy Walls | 754f996 | 2010-12-11 20:38:20 -0300 | [diff] [blame] | 110 | s->dvb = NULL; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 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 | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 119 | INIT_LIST_HEAD(&s->buf_pool); |
| 120 | s->bufs_per_mdl = 1; |
| 121 | s->mdl_size = s->buf_size * s->bufs_per_mdl; |
Andy Walls | 6ecd86d | 2008-12-07 23:30:17 -0300 | [diff] [blame] | 122 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 123 | init_waitqueue_head(&s->waitq); |
| 124 | s->id = -1; |
Andy Walls | 40c5520 | 2009-04-13 23:08:00 -0300 | [diff] [blame] | 125 | spin_lock_init(&s->q_free.lock); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 126 | cx18_queue_init(&s->q_free); |
Andy Walls | 40c5520 | 2009-04-13 23:08:00 -0300 | [diff] [blame] | 127 | spin_lock_init(&s->q_busy.lock); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 128 | cx18_queue_init(&s->q_busy); |
Andy Walls | 40c5520 | 2009-04-13 23:08:00 -0300 | [diff] [blame] | 129 | spin_lock_init(&s->q_full.lock); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 130 | cx18_queue_init(&s->q_full); |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 131 | spin_lock_init(&s->q_idle.lock); |
| 132 | cx18_queue_init(&s->q_idle); |
Andy Walls | 21a278b | 2009-04-15 20:45:10 -0300 | [diff] [blame] | 133 | |
| 134 | INIT_WORK(&s->out_work_order, cx18_out_work_handler); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | static int cx18_prep_dev(struct cx18 *cx, int type) |
| 138 | { |
| 139 | struct cx18_stream *s = &cx->streams[type]; |
| 140 | u32 cap = cx->v4l2_cap; |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 141 | int num_offset = cx18_stream_info[type].num_offset; |
Andy Walls | 5811cf9 | 2009-02-14 17:08:37 -0300 | [diff] [blame] | 142 | int num = cx->instance + cx18_first_minor + num_offset; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 143 | |
Andy Walls | 754f996 | 2010-12-11 20:38:20 -0300 | [diff] [blame] | 144 | /* |
| 145 | * These five fields are always initialized. |
| 146 | * For analog capture related streams, if video_dev == NULL then the |
| 147 | * stream is not in use. |
| 148 | * For the TS stream, if dvb == NULL then the stream is not in use. |
| 149 | * In those cases no other fields but these four can be used. |
| 150 | */ |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 151 | s->video_dev = NULL; |
Andy Walls | 754f996 | 2010-12-11 20:38:20 -0300 | [diff] [blame] | 152 | s->dvb = NULL; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 153 | s->cx = cx; |
| 154 | s->type = type; |
| 155 | s->name = cx18_stream_info[type].name; |
| 156 | |
| 157 | /* Check whether the radio is supported */ |
| 158 | if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO)) |
| 159 | return 0; |
| 160 | |
| 161 | /* Check whether VBI is supported */ |
| 162 | if (type == CX18_ENC_STREAM_TYPE_VBI && |
| 163 | !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE))) |
| 164 | return 0; |
| 165 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 166 | /* User explicitly selected 0 buffers for these streams, so don't |
| 167 | create them. */ |
| 168 | if (cx18_stream_info[type].dma != PCI_DMA_NONE && |
Andy Walls | 6ecd86d | 2008-12-07 23:30:17 -0300 | [diff] [blame] | 169 | cx->stream_buffers[type] == 0) { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 170 | CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name); |
| 171 | return 0; |
| 172 | } |
| 173 | |
| 174 | cx18_stream_init(cx, type); |
| 175 | |
Andy Walls | 754f996 | 2010-12-11 20:38:20 -0300 | [diff] [blame] | 176 | /* Allocate the cx18_dvb struct only for the TS on cards with DTV */ |
| 177 | if (type == CX18_ENC_STREAM_TYPE_TS) { |
| 178 | if (cx->card->hw_all & CX18_HW_DVB) { |
| 179 | s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL); |
| 180 | if (s->dvb == NULL) { |
| 181 | CX18_ERR("Couldn't allocate cx18_dvb structure" |
| 182 | " for %s\n", s->name); |
| 183 | return -ENOMEM; |
| 184 | } |
| 185 | } else { |
| 186 | /* Don't need buffers for the TS, if there is no DVB */ |
| 187 | s->buffers = 0; |
| 188 | } |
| 189 | } |
| 190 | |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 191 | if (num_offset == -1) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 192 | return 0; |
| 193 | |
| 194 | /* allocate and initialize the v4l2 video device structure */ |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 195 | s->video_dev = video_device_alloc(); |
| 196 | if (s->video_dev == NULL) { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 197 | CX18_ERR("Couldn't allocate v4l2 video_device for %s\n", |
| 198 | s->name); |
| 199 | return -ENOMEM; |
| 200 | } |
| 201 | |
Andy Walls | 5811cf9 | 2009-02-14 17:08:37 -0300 | [diff] [blame] | 202 | snprintf(s->video_dev->name, sizeof(s->video_dev->name), "%s %s", |
| 203 | cx->v4l2_dev.name, s->name); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 204 | |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 205 | s->video_dev->num = num; |
Andy Walls | 5811cf9 | 2009-02-14 17:08:37 -0300 | [diff] [blame] | 206 | s->video_dev->v4l2_dev = &cx->v4l2_dev; |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 207 | s->video_dev->fops = &cx18_v4l2_enc_fops; |
| 208 | s->video_dev->release = video_device_release; |
| 209 | s->video_dev->tvnorms = V4L2_STD_ALL; |
Hans Verkuil | b1a873a | 2011-03-22 10:14:07 -0300 | [diff] [blame] | 210 | set_bit(V4L2_FL_USE_FH_PRIO, &s->video_dev->flags); |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 211 | cx18_set_funcs(s->video_dev); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | /* Initialize v4l2 variables and register v4l2 devices */ |
| 216 | int cx18_streams_setup(struct cx18 *cx) |
| 217 | { |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 218 | int type, ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 219 | |
| 220 | /* Setup V4L2 Devices */ |
| 221 | for (type = 0; type < CX18_MAX_STREAMS; type++) { |
| 222 | /* Prepare device */ |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 223 | ret = cx18_prep_dev(cx, type); |
| 224 | if (ret < 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 225 | break; |
| 226 | |
| 227 | /* Allocate Stream */ |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 228 | ret = cx18_stream_alloc(&cx->streams[type]); |
| 229 | if (ret < 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 230 | break; |
| 231 | } |
| 232 | if (type == CX18_MAX_STREAMS) |
| 233 | return 0; |
| 234 | |
| 235 | /* One or more streams could not be initialized. Clean 'em all up. */ |
Hans Verkuil | 3f98387 | 2008-05-01 10:31:12 -0300 | [diff] [blame] | 236 | cx18_streams_cleanup(cx, 0); |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 237 | return ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 238 | } |
| 239 | |
| 240 | static int cx18_reg_dev(struct cx18 *cx, int type) |
| 241 | { |
| 242 | struct cx18_stream *s = &cx->streams[type]; |
| 243 | int vfl_type = cx18_stream_info[type].vfl_type; |
Laurent Pinchart | 38c7c03 | 2009-11-27 13:57:15 -0300 | [diff] [blame] | 244 | const char *name; |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 245 | int num, ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 246 | |
Andy Walls | 754f996 | 2010-12-11 20:38:20 -0300 | [diff] [blame] | 247 | if (type == CX18_ENC_STREAM_TYPE_TS && s->dvb != NULL) { |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 248 | ret = cx18_dvb_register(s); |
| 249 | if (ret < 0) { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 250 | CX18_ERR("DVB failed to register\n"); |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 251 | return ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 252 | } |
| 253 | } |
| 254 | |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 255 | if (s->video_dev == NULL) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 256 | return 0; |
| 257 | |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 258 | num = s->video_dev->num; |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 259 | /* card number + user defined offset + device offset */ |
| 260 | if (type != CX18_ENC_STREAM_TYPE_MPG) { |
| 261 | struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG]; |
| 262 | |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 263 | if (s_mpg->video_dev) |
| 264 | num = s_mpg->video_dev->num |
| 265 | + cx18_stream_info[type].num_offset; |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 266 | } |
Andy Walls | 5811cf9 | 2009-02-14 17:08:37 -0300 | [diff] [blame] | 267 | video_set_drvdata(s->video_dev, s); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 268 | |
| 269 | /* Register device. First try the desired minor, then any free one. */ |
Hans Verkuil | 6b5270d | 2009-09-06 07:54:00 -0300 | [diff] [blame] | 270 | ret = video_register_device_no_warn(s->video_dev, vfl_type, num); |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 271 | if (ret < 0) { |
Hans Verkuil | 581644d | 2009-06-19 11:54:00 -0300 | [diff] [blame] | 272 | CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n", |
Hans Verkuil | dd89601 | 2008-10-04 08:36:54 -0300 | [diff] [blame] | 273 | s->name, num); |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 274 | video_device_release(s->video_dev); |
| 275 | s->video_dev = NULL; |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 276 | return ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 277 | } |
Laurent Pinchart | 38c7c03 | 2009-11-27 13:57:15 -0300 | [diff] [blame] | 278 | |
| 279 | name = video_device_node_name(s->video_dev); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 280 | |
| 281 | switch (vfl_type) { |
| 282 | case VFL_TYPE_GRABBER: |
Laurent Pinchart | 38c7c03 | 2009-11-27 13:57:15 -0300 | [diff] [blame] | 283 | CX18_INFO("Registered device %s for %s (%d x %d.%02d kB)\n", |
| 284 | name, s->name, cx->stream_buffers[type], |
Andy Walls | 22dce18 | 2009-11-09 23:55:30 -0300 | [diff] [blame] | 285 | cx->stream_buf_size[type] / 1024, |
| 286 | (cx->stream_buf_size[type] * 100 / 1024) % 100); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 287 | break; |
| 288 | |
| 289 | case VFL_TYPE_RADIO: |
Laurent Pinchart | 38c7c03 | 2009-11-27 13:57:15 -0300 | [diff] [blame] | 290 | CX18_INFO("Registered device %s for %s\n", name, s->name); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 291 | break; |
| 292 | |
| 293 | case VFL_TYPE_VBI: |
Andy Walls | 6ecd86d | 2008-12-07 23:30:17 -0300 | [diff] [blame] | 294 | if (cx->stream_buffers[type]) |
Laurent Pinchart | 38c7c03 | 2009-11-27 13:57:15 -0300 | [diff] [blame] | 295 | CX18_INFO("Registered device %s for %s " |
Andy Walls | 6ecd86d | 2008-12-07 23:30:17 -0300 | [diff] [blame] | 296 | "(%d x %d bytes)\n", |
Laurent Pinchart | 38c7c03 | 2009-11-27 13:57:15 -0300 | [diff] [blame] | 297 | name, s->name, cx->stream_buffers[type], |
Andy Walls | 6ecd86d | 2008-12-07 23:30:17 -0300 | [diff] [blame] | 298 | cx->stream_buf_size[type]); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 299 | else |
Laurent Pinchart | 38c7c03 | 2009-11-27 13:57:15 -0300 | [diff] [blame] | 300 | CX18_INFO("Registered device %s for %s\n", |
| 301 | name, s->name); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 302 | break; |
| 303 | } |
| 304 | |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | /* Register v4l2 devices */ |
| 309 | int cx18_streams_register(struct cx18 *cx) |
| 310 | { |
| 311 | int type; |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 312 | int err; |
| 313 | int ret = 0; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 314 | |
| 315 | /* Register V4L2 devices */ |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 316 | for (type = 0; type < CX18_MAX_STREAMS; type++) { |
| 317 | err = cx18_reg_dev(cx, type); |
| 318 | if (err && ret == 0) |
| 319 | ret = err; |
| 320 | } |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 321 | |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 322 | if (ret == 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 323 | return 0; |
| 324 | |
| 325 | /* One or more streams could not be initialized. Clean 'em all up. */ |
Hans Verkuil | 3f98387 | 2008-05-01 10:31:12 -0300 | [diff] [blame] | 326 | cx18_streams_cleanup(cx, 1); |
Andy Walls | 9b4a7c8 | 2008-10-18 10:20:25 -0300 | [diff] [blame] | 327 | return ret; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 328 | } |
| 329 | |
| 330 | /* Unregister v4l2 devices */ |
Hans Verkuil | 3f98387 | 2008-05-01 10:31:12 -0300 | [diff] [blame] | 331 | void cx18_streams_cleanup(struct cx18 *cx, int unregister) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 332 | { |
| 333 | struct video_device *vdev; |
| 334 | int type; |
| 335 | |
| 336 | /* Teardown all streams */ |
| 337 | for (type = 0; type < CX18_MAX_STREAMS; type++) { |
Andy Walls | 7b1dde0 | 2009-12-31 01:35:08 -0300 | [diff] [blame] | 338 | |
Andy Walls | 754f996 | 2010-12-11 20:38:20 -0300 | [diff] [blame] | 339 | /* The TS has a cx18_dvb structure, not a video_device */ |
Andy Walls | 7b1dde0 | 2009-12-31 01:35:08 -0300 | [diff] [blame] | 340 | if (type == CX18_ENC_STREAM_TYPE_TS) { |
Andy Walls | 754f996 | 2010-12-11 20:38:20 -0300 | [diff] [blame] | 341 | if (cx->streams[type].dvb != NULL) { |
| 342 | if (unregister) |
| 343 | cx18_dvb_unregister(&cx->streams[type]); |
| 344 | kfree(cx->streams[type].dvb); |
| 345 | cx->streams[type].dvb = NULL; |
Andy Walls | 7b1dde0 | 2009-12-31 01:35:08 -0300 | [diff] [blame] | 346 | cx18_stream_free(&cx->streams[type]); |
| 347 | } |
| 348 | continue; |
Hans Verkuil | fac3639 | 2008-07-18 10:07:10 -0300 | [diff] [blame] | 349 | } |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 350 | |
Andy Walls | 7b1dde0 | 2009-12-31 01:35:08 -0300 | [diff] [blame] | 351 | /* No struct video_device, but can have buffers allocated */ |
| 352 | if (type == CX18_ENC_STREAM_TYPE_IDX) { |
| 353 | if (cx->stream_buffers[type] != 0) { |
| 354 | cx->stream_buffers[type] = 0; |
| 355 | cx18_stream_free(&cx->streams[type]); |
| 356 | } |
| 357 | continue; |
| 358 | } |
| 359 | |
| 360 | /* If struct video_device exists, can have buffers allocated */ |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 361 | vdev = cx->streams[type].video_dev; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 362 | |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 363 | cx->streams[type].video_dev = NULL; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 364 | if (vdev == NULL) |
| 365 | continue; |
| 366 | |
| 367 | cx18_stream_free(&cx->streams[type]); |
| 368 | |
Hans Verkuil | 3f98387 | 2008-05-01 10:31:12 -0300 | [diff] [blame] | 369 | /* Unregister or release device */ |
| 370 | if (unregister) |
| 371 | video_unregister_device(vdev); |
| 372 | else |
| 373 | video_device_release(vdev); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 374 | } |
| 375 | } |
| 376 | |
| 377 | static void cx18_vbi_setup(struct cx18_stream *s) |
| 378 | { |
| 379 | struct cx18 *cx = s->cx; |
Andy Walls | dd07343 | 2008-12-12 16:24:04 -0300 | [diff] [blame] | 380 | int raw = cx18_raw_vbi(cx); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 381 | u32 data[CX2341X_MBOX_MAX_DATA]; |
| 382 | int lines; |
| 383 | |
| 384 | if (cx->is_60hz) { |
| 385 | cx->vbi.count = 12; |
| 386 | cx->vbi.start[0] = 10; |
| 387 | cx->vbi.start[1] = 273; |
| 388 | } else { /* PAL/SECAM */ |
| 389 | cx->vbi.count = 18; |
| 390 | cx->vbi.start[0] = 6; |
| 391 | cx->vbi.start[1] = 318; |
| 392 | } |
| 393 | |
| 394 | /* setup VBI registers */ |
Hans Verkuil | add632c | 2010-03-14 12:24:15 -0300 | [diff] [blame] | 395 | if (raw) |
| 396 | v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &cx->vbi.in.fmt.vbi); |
| 397 | else |
| 398 | v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &cx->vbi.in.fmt.sliced); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 399 | |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 400 | /* |
| 401 | * Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw |
| 402 | * VBI when the first analog capture channel starts, as once it starts |
| 403 | * (e.g. MPEG), we can't effect any change in the Encoder Raw VBI setup |
| 404 | * (i.e. for the VBI capture channels). We also send it for each |
| 405 | * analog capture channel anyway just to make sure we get the proper |
| 406 | * behavior |
| 407 | */ |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 408 | if (raw) { |
| 409 | lines = cx->vbi.count * 2; |
| 410 | } else { |
Andy Walls | 812b1f9 | 2009-02-08 22:40:04 -0300 | [diff] [blame] | 411 | /* |
| 412 | * For 525/60 systems, according to the VIP 2 & BT.656 std: |
| 413 | * The EAV RP code's Field bit toggles on line 4, a few lines |
| 414 | * after the Vertcal Blank bit has already toggled. |
| 415 | * Tell the encoder to capture 21-4+1=18 lines per field, |
| 416 | * since we want lines 10 through 21. |
| 417 | * |
Andy Walls | 5ab7405 | 2009-05-10 22:14:29 -0300 | [diff] [blame] | 418 | * For 625/50 systems, according to the VIP 2 & BT.656 std: |
| 419 | * The EAV RP code's Field bit toggles on line 1, a few lines |
| 420 | * after the Vertcal Blank bit has already toggled. |
Andy Walls | 929a3ad | 2009-05-16 21:06:57 -0300 | [diff] [blame] | 421 | * (We've actually set the digitizer so that the Field bit |
| 422 | * toggles on line 2.) Tell the encoder to capture 23-2+1=22 |
| 423 | * lines per field, since we want lines 6 through 23. |
Andy Walls | 812b1f9 | 2009-02-08 22:40:04 -0300 | [diff] [blame] | 424 | */ |
Andy Walls | 929a3ad | 2009-05-16 21:06:57 -0300 | [diff] [blame] | 425 | lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 426 | } |
| 427 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 428 | data[0] = s->handle; |
| 429 | /* Lines per field */ |
| 430 | data[1] = (lines / 2) | ((lines / 2) << 16); |
| 431 | /* bytes per line */ |
Andy Walls | 302df97 | 2009-01-31 00:33:02 -0300 | [diff] [blame] | 432 | data[2] = (raw ? vbi_active_samples |
| 433 | : (cx->is_60hz ? vbi_hblank_samples_60Hz |
| 434 | : vbi_hblank_samples_50Hz)); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 435 | /* Every X number of frames a VBI interrupt arrives |
| 436 | (frames as in 25 or 30 fps) */ |
| 437 | data[3] = 1; |
Andy Walls | 302df97 | 2009-01-31 00:33:02 -0300 | [diff] [blame] | 438 | /* |
| 439 | * Set the SAV/EAV RP codes to look for as start/stop points |
| 440 | * when in VIP-1.1 mode |
| 441 | */ |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 442 | if (raw) { |
Andy Walls | 302df97 | 2009-01-31 00:33:02 -0300 | [diff] [blame] | 443 | /* |
| 444 | * Start codes for beginning of "active" line in vertical blank |
| 445 | * 0x20 ( VerticalBlank ) |
| 446 | * 0x60 ( EvenField VerticalBlank ) |
| 447 | */ |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 448 | data[4] = 0x20602060; |
Andy Walls | 302df97 | 2009-01-31 00:33:02 -0300 | [diff] [blame] | 449 | /* |
| 450 | * End codes for end of "active" raw lines and regular lines |
| 451 | * 0x30 ( VerticalBlank HorizontalBlank) |
| 452 | * 0x70 ( EvenField VerticalBlank HorizontalBlank) |
| 453 | * 0x90 (Task HorizontalBlank) |
| 454 | * 0xd0 (Task EvenField HorizontalBlank) |
| 455 | */ |
Andy Walls | af009cf | 2008-12-12 20:00:29 -0300 | [diff] [blame] | 456 | data[5] = 0x307090d0; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 457 | } else { |
Andy Walls | 302df97 | 2009-01-31 00:33:02 -0300 | [diff] [blame] | 458 | /* |
| 459 | * End codes for active video, we want data in the hblank region |
| 460 | * 0xb0 (Task 0 VerticalBlank HorizontalBlank) |
| 461 | * 0xf0 (Task EvenField VerticalBlank HorizontalBlank) |
| 462 | * |
| 463 | * Since the V bit is only allowed to toggle in the EAV RP code, |
| 464 | * just before the first active region line, these two |
Andy Walls | 812b1f9 | 2009-02-08 22:40:04 -0300 | [diff] [blame] | 465 | * are problematic: |
Andy Walls | 302df97 | 2009-01-31 00:33:02 -0300 | [diff] [blame] | 466 | * 0x90 (Task HorizontalBlank) |
| 467 | * 0xd0 (Task EvenField HorizontalBlank) |
Andy Walls | 812b1f9 | 2009-02-08 22:40:04 -0300 | [diff] [blame] | 468 | * |
Andy Walls | af7c58b | 2009-02-28 20:13:50 -0300 | [diff] [blame] | 469 | * We have set the digitzer such that we don't have to worry |
| 470 | * about these problem codes. |
Andy Walls | 302df97 | 2009-01-31 00:33:02 -0300 | [diff] [blame] | 471 | */ |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 472 | data[4] = 0xB0F0B0F0; |
Andy Walls | 302df97 | 2009-01-31 00:33:02 -0300 | [diff] [blame] | 473 | /* |
| 474 | * Start codes for beginning of active line in vertical blank |
| 475 | * 0xa0 (Task VerticalBlank ) |
| 476 | * 0xe0 (Task EvenField VerticalBlank ) |
| 477 | */ |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 478 | data[5] = 0xA0E0A0E0; |
| 479 | } |
| 480 | |
| 481 | CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n", |
| 482 | data[0], data[1], data[2], data[3], data[4], data[5]); |
| 483 | |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 484 | cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 485 | } |
| 486 | |
Andy Walls | ef99179 | 2009-12-31 18:27:13 -0300 | [diff] [blame] | 487 | void cx18_stream_rotate_idx_mdls(struct cx18 *cx) |
| 488 | { |
| 489 | struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; |
| 490 | struct cx18_mdl *mdl; |
| 491 | |
| 492 | if (!cx18_stream_enabled(s)) |
| 493 | return; |
| 494 | |
| 495 | /* Return if the firmware is not running low on MDLs */ |
| 496 | if ((atomic_read(&s->q_free.depth) + atomic_read(&s->q_busy.depth)) >= |
| 497 | CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN) |
| 498 | return; |
| 499 | |
| 500 | /* Return if there are no MDLs to rotate back to the firmware */ |
| 501 | if (atomic_read(&s->q_full.depth) < 2) |
| 502 | return; |
| 503 | |
| 504 | /* |
| 505 | * Take the oldest IDX MDL still holding data, and discard its index |
| 506 | * entries by scheduling the MDL to go back to the firmware |
| 507 | */ |
| 508 | mdl = cx18_dequeue(s, &s->q_full); |
| 509 | if (mdl != NULL) |
| 510 | cx18_enqueue(s, mdl, &s->q_free); |
| 511 | } |
| 512 | |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 513 | static |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 514 | struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s, |
| 515 | struct cx18_mdl *mdl) |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 516 | { |
| 517 | struct cx18 *cx = s->cx; |
| 518 | struct cx18_queue *q; |
| 519 | |
| 520 | /* Don't give it to the firmware, if we're not running a capture */ |
| 521 | if (s->handle == CX18_INVALID_TASK_HANDLE || |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 522 | test_bit(CX18_F_S_STOPPING, &s->s_flags) || |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 523 | !test_bit(CX18_F_S_STREAMING, &s->s_flags)) |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 524 | return cx18_enqueue(s, mdl, &s->q_free); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 525 | |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 526 | q = cx18_enqueue(s, mdl, &s->q_busy); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 527 | if (q != &s->q_busy) |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 528 | return q; /* The firmware has the max MDLs it can handle */ |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 529 | |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 530 | cx18_mdl_sync_for_device(s, mdl); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 531 | cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle, |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 532 | (void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem, |
| 533 | s->bufs_per_mdl, mdl->id, s->mdl_size); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 534 | return q; |
| 535 | } |
| 536 | |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 537 | static |
| 538 | void _cx18_stream_load_fw_queue(struct cx18_stream *s) |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 539 | { |
Andy Walls | abb096d | 2008-12-12 15:50:27 -0300 | [diff] [blame] | 540 | struct cx18_queue *q; |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 541 | struct cx18_mdl *mdl; |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 542 | |
Andy Walls | c37b11b | 2009-11-04 23:13:58 -0300 | [diff] [blame] | 543 | if (atomic_read(&s->q_free.depth) == 0 || |
| 544 | atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM) |
Andy Walls | abb096d | 2008-12-12 15:50:27 -0300 | [diff] [blame] | 545 | return; |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 546 | |
Andy Walls | abb096d | 2008-12-12 15:50:27 -0300 | [diff] [blame] | 547 | /* Move from q_free to q_busy notifying the firmware, until the limit */ |
| 548 | do { |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 549 | mdl = cx18_dequeue(s, &s->q_free); |
| 550 | if (mdl == NULL) |
Andy Walls | abb096d | 2008-12-12 15:50:27 -0300 | [diff] [blame] | 551 | break; |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 552 | q = _cx18_stream_put_mdl_fw(s, mdl); |
Andy Walls | c37b11b | 2009-11-04 23:13:58 -0300 | [diff] [blame] | 553 | } while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM |
Andy Walls | 0ef0289 | 2008-12-14 18:52:12 -0300 | [diff] [blame] | 554 | && q == &s->q_busy); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 555 | } |
| 556 | |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 557 | void cx18_out_work_handler(struct work_struct *work) |
| 558 | { |
Andy Walls | 21a278b | 2009-04-15 20:45:10 -0300 | [diff] [blame] | 559 | struct cx18_stream *s = |
| 560 | container_of(work, struct cx18_stream, out_work_order); |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 561 | |
Andy Walls | 21a278b | 2009-04-15 20:45:10 -0300 | [diff] [blame] | 562 | _cx18_stream_load_fw_queue(s); |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 563 | } |
| 564 | |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 565 | static void cx18_stream_configure_mdls(struct cx18_stream *s) |
| 566 | { |
| 567 | cx18_unload_queues(s); |
| 568 | |
Andy Walls | 22dce18 | 2009-11-09 23:55:30 -0300 | [diff] [blame] | 569 | switch (s->type) { |
| 570 | case CX18_ENC_STREAM_TYPE_YUV: |
| 571 | /* |
| 572 | * Height should be a multiple of 32 lines. |
| 573 | * Set the MDL size to the exact size needed for one frame. |
| 574 | * Use enough buffers per MDL to cover the MDL size |
| 575 | */ |
Hans Verkuil | a75b9be | 2010-12-31 10:22:52 -0300 | [diff] [blame] | 576 | s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2; |
Andy Walls | 22dce18 | 2009-11-09 23:55:30 -0300 | [diff] [blame] | 577 | s->bufs_per_mdl = s->mdl_size / s->buf_size; |
| 578 | if (s->mdl_size % s->buf_size) |
| 579 | s->bufs_per_mdl++; |
| 580 | break; |
Andy Walls | 127ce5f | 2009-11-11 00:22:57 -0300 | [diff] [blame] | 581 | case CX18_ENC_STREAM_TYPE_VBI: |
| 582 | s->bufs_per_mdl = 1; |
| 583 | if (cx18_raw_vbi(s->cx)) { |
| 584 | s->mdl_size = (s->cx->is_60hz ? 12 : 18) |
| 585 | * 2 * vbi_active_samples; |
| 586 | } else { |
| 587 | /* |
| 588 | * See comment in cx18_vbi_setup() below about the |
| 589 | * extra lines we capture in sliced VBI mode due to |
| 590 | * the lines on which EAV RP codes toggle. |
| 591 | */ |
| 592 | s->mdl_size = s->cx->is_60hz |
| 593 | ? (21 - 4 + 1) * 2 * vbi_hblank_samples_60Hz |
| 594 | : (23 - 2 + 1) * 2 * vbi_hblank_samples_50Hz; |
| 595 | } |
| 596 | break; |
Andy Walls | 22dce18 | 2009-11-09 23:55:30 -0300 | [diff] [blame] | 597 | default: |
| 598 | s->bufs_per_mdl = 1; |
| 599 | s->mdl_size = s->buf_size * s->bufs_per_mdl; |
| 600 | break; |
| 601 | } |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 602 | |
| 603 | cx18_load_queues(s); |
| 604 | } |
| 605 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 606 | int cx18_start_v4l2_encode_stream(struct cx18_stream *s) |
| 607 | { |
| 608 | u32 data[MAX_MB_ARGUMENTS]; |
| 609 | struct cx18 *cx = s->cx; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 610 | int captype = 0; |
Andy Walls | e46c54a | 2009-12-31 02:14:51 -0300 | [diff] [blame] | 611 | struct cx18_stream *s_idx; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 612 | |
Andy Walls | 540bab9 | 2009-12-31 00:26:49 -0300 | [diff] [blame] | 613 | if (!cx18_stream_enabled(s)) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 614 | return -EINVAL; |
| 615 | |
| 616 | CX18_DEBUG_INFO("Start encoder stream %s\n", s->name); |
| 617 | |
| 618 | switch (s->type) { |
| 619 | case CX18_ENC_STREAM_TYPE_MPG: |
| 620 | captype = CAPTURE_CHANNEL_TYPE_MPEG; |
| 621 | cx->mpg_data_received = cx->vbi_data_inserted = 0; |
| 622 | cx->dualwatch_jiffies = jiffies; |
Hans Verkuil | a75b9be | 2010-12-31 10:22:52 -0300 | [diff] [blame] | 623 | cx->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(cx->cxhdl.audio_mode); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 624 | cx->search_pack_header = 0; |
| 625 | break; |
| 626 | |
Andy Walls | e46c54a | 2009-12-31 02:14:51 -0300 | [diff] [blame] | 627 | case CX18_ENC_STREAM_TYPE_IDX: |
| 628 | captype = CAPTURE_CHANNEL_TYPE_INDEX; |
| 629 | break; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 630 | case CX18_ENC_STREAM_TYPE_TS: |
| 631 | captype = CAPTURE_CHANNEL_TYPE_TS; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 632 | break; |
| 633 | case CX18_ENC_STREAM_TYPE_YUV: |
| 634 | captype = CAPTURE_CHANNEL_TYPE_YUV; |
| 635 | break; |
| 636 | case CX18_ENC_STREAM_TYPE_PCM: |
| 637 | captype = CAPTURE_CHANNEL_TYPE_PCM; |
| 638 | break; |
| 639 | case CX18_ENC_STREAM_TYPE_VBI: |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 640 | #ifdef CX18_ENCODER_PARSES_SLICED |
Andy Walls | dd07343 | 2008-12-12 16:24:04 -0300 | [diff] [blame] | 641 | captype = cx18_raw_vbi(cx) ? |
| 642 | CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI; |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 643 | #else |
| 644 | /* |
| 645 | * Currently we set things up so that Sliced VBI from the |
| 646 | * digitizer is handled as Raw VBI by the encoder |
| 647 | */ |
| 648 | captype = CAPTURE_CHANNEL_TYPE_VBI; |
| 649 | #endif |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 650 | cx->vbi.frame = 0; |
| 651 | cx->vbi.inserted_frame = 0; |
| 652 | memset(cx->vbi.sliced_mpeg_size, |
| 653 | 0, sizeof(cx->vbi.sliced_mpeg_size)); |
| 654 | break; |
| 655 | default: |
| 656 | return -EINVAL; |
| 657 | } |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 658 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 659 | /* Clear Streamoff flags in case left from last capture */ |
| 660 | clear_bit(CX18_F_S_STREAMOFF, &s->s_flags); |
| 661 | |
| 662 | cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE); |
| 663 | s->handle = data[0]; |
| 664 | cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype); |
| 665 | |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 666 | /* |
| 667 | * For everything but CAPTURE_CHANNEL_TYPE_TS, play it safe and |
| 668 | * set up all the parameters, as it is not obvious which parameters the |
| 669 | * firmware shares across capture channel types and which it does not. |
| 670 | * |
| 671 | * Some of the cx18_vapi() calls below apply to only certain capture |
| 672 | * channel types. We're hoping there's no harm in calling most of them |
| 673 | * anyway, as long as the values are all consistent. Setting some |
| 674 | * shared parameters will have no effect once an analog capture channel |
| 675 | * has started streaming. |
| 676 | */ |
| 677 | if (captype != CAPTURE_CHANNEL_TYPE_TS) { |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 678 | cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0); |
| 679 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1); |
| 680 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0); |
| 681 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 682 | |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 683 | /* |
| 684 | * Audio related reset according to |
| 685 | * Documentation/video4linux/cx2341x/fw-encoder-api.txt |
| 686 | */ |
| 687 | if (atomic_read(&cx->ana_capturing) == 0) |
| 688 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2, |
| 689 | s->handle, 12); |
| 690 | |
| 691 | /* |
| 692 | * Number of lines for Field 1 & Field 2 according to |
| 693 | * Documentation/video4linux/cx2341x/fw-encoder-api.txt |
Andy Walls | f37aa51 | 2009-02-07 01:15:44 -0300 | [diff] [blame] | 694 | * Field 1 is 312 for 625 line systems in BT.656 |
| 695 | * Field 2 is 313 for 625 line systems in BT.656 |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 696 | */ |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 697 | cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3, |
Andy Walls | f37aa51 | 2009-02-07 01:15:44 -0300 | [diff] [blame] | 698 | s->handle, 312, 313); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 699 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 700 | if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE) |
| 701 | cx18_vbi_setup(s); |
| 702 | |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 703 | /* |
Andy Walls | e46c54a | 2009-12-31 02:14:51 -0300 | [diff] [blame] | 704 | * Select to receive I, P, and B frame index entries, if the |
| 705 | * index stream is enabled. Otherwise disable index entry |
| 706 | * generation. |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 707 | */ |
Andy Walls | e46c54a | 2009-12-31 02:14:51 -0300 | [diff] [blame] | 708 | s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; |
Andy Walls | 5ada577 | 2010-01-01 13:25:41 -0300 | [diff] [blame] | 709 | cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2, |
| 710 | s->handle, cx18_stream_enabled(s_idx) ? 7 : 0); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 711 | |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 712 | /* Call out to the common CX2341x API setup for user controls */ |
Hans Verkuil | a75b9be | 2010-12-31 10:22:52 -0300 | [diff] [blame] | 713 | cx->cxhdl.priv = s; |
| 714 | cx2341x_handler_setup(&cx->cxhdl); |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 715 | |
| 716 | /* |
| 717 | * When starting a capture and we're set for radio, |
| 718 | * ensure the video is muted, despite the user control. |
| 719 | */ |
Hans Verkuil | a75b9be | 2010-12-31 10:22:52 -0300 | [diff] [blame] | 720 | if (!cx->cxhdl.video_mute && |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 721 | test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) |
| 722 | cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle, |
Hans Verkuil | a75b9be | 2010-12-31 10:22:52 -0300 | [diff] [blame] | 723 | (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 724 | } |
| 725 | |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 726 | if (atomic_read(&cx->tot_capturing) == 0) { |
Hans Verkuil | a75b9be | 2010-12-31 10:22:52 -0300 | [diff] [blame] | 727 | cx2341x_handler_set_busy(&cx->cxhdl, 1); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 728 | clear_bit(CX18_F_I_EOS, &cx->i_flags); |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 729 | cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 730 | } |
| 731 | |
| 732 | cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle, |
Al Viro | 990c81c | 2008-05-21 00:32:01 -0300 | [diff] [blame] | 733 | (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem, |
| 734 | (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] | 735 | |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 736 | /* Init all the cpu_mdls for this stream */ |
Andy Walls | 52fcb3e | 2009-11-08 23:45:24 -0300 | [diff] [blame] | 737 | cx18_stream_configure_mdls(s); |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 738 | _cx18_stream_load_fw_queue(s); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 739 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 740 | /* begin_capture */ |
| 741 | if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) { |
| 742 | CX18_DEBUG_WARN("Error starting capture!\n"); |
Andy Walls | 3b5df8e | 2008-08-23 18:36:50 -0300 | [diff] [blame] | 743 | /* Ensure we're really not capturing before releasing MDLs */ |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 744 | set_bit(CX18_F_S_STOPPING, &s->s_flags); |
Andy Walls | 3b5df8e | 2008-08-23 18:36:50 -0300 | [diff] [blame] | 745 | if (s->type == CX18_ENC_STREAM_TYPE_MPG) |
| 746 | cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1); |
| 747 | else |
| 748 | cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 749 | clear_bit(CX18_F_S_STREAMING, &s->s_flags); |
| 750 | /* FIXME - CX18_F_S_STREAMOFF as well? */ |
Andy Walls | 3b5df8e | 2008-08-23 18:36:50 -0300 | [diff] [blame] | 751 | cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 752 | cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 753 | s->handle = CX18_INVALID_TASK_HANDLE; |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 754 | clear_bit(CX18_F_S_STOPPING, &s->s_flags); |
Andy Walls | 66c2a6b | 2008-12-08 23:02:45 -0300 | [diff] [blame] | 755 | if (atomic_read(&cx->tot_capturing) == 0) { |
| 756 | set_bit(CX18_F_I_EOS, &cx->i_flags); |
| 757 | cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); |
| 758 | } |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 759 | return -EINVAL; |
| 760 | } |
| 761 | |
| 762 | /* you're live! sit back and await interrupts :) */ |
Andy Walls | dcc0ef8 | 2009-02-06 18:33:43 -0300 | [diff] [blame] | 763 | if (captype != CAPTURE_CHANNEL_TYPE_TS) |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 764 | atomic_inc(&cx->ana_capturing); |
| 765 | atomic_inc(&cx->tot_capturing); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 766 | return 0; |
| 767 | } |
Devin Heitmueller | 0f4cf67 | 2009-11-19 23:23:57 -0300 | [diff] [blame] | 768 | EXPORT_SYMBOL(cx18_start_v4l2_encode_stream); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 769 | |
| 770 | void cx18_stop_all_captures(struct cx18 *cx) |
| 771 | { |
| 772 | int i; |
| 773 | |
| 774 | for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) { |
| 775 | struct cx18_stream *s = &cx->streams[i]; |
| 776 | |
Andy Walls | 540bab9 | 2009-12-31 00:26:49 -0300 | [diff] [blame] | 777 | if (!cx18_stream_enabled(s)) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 778 | continue; |
| 779 | if (test_bit(CX18_F_S_STREAMING, &s->s_flags)) |
| 780 | cx18_stop_v4l2_encode_stream(s, 0); |
| 781 | } |
| 782 | } |
| 783 | |
| 784 | int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end) |
| 785 | { |
| 786 | struct cx18 *cx = s->cx; |
| 787 | unsigned long then; |
| 788 | |
Andy Walls | 540bab9 | 2009-12-31 00:26:49 -0300 | [diff] [blame] | 789 | if (!cx18_stream_enabled(s)) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 790 | return -EINVAL; |
| 791 | |
| 792 | /* This function assumes that you are allowed to stop the capture |
| 793 | and that we are actually capturing */ |
| 794 | |
| 795 | CX18_DEBUG_INFO("Stop Capture\n"); |
| 796 | |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 797 | if (atomic_read(&cx->tot_capturing) == 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 798 | return 0; |
| 799 | |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 800 | set_bit(CX18_F_S_STOPPING, &s->s_flags); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 801 | if (s->type == CX18_ENC_STREAM_TYPE_MPG) |
| 802 | cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end); |
| 803 | else |
| 804 | cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); |
| 805 | |
| 806 | then = jiffies; |
| 807 | |
| 808 | if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) { |
| 809 | CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n"); |
| 810 | } |
| 811 | |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 812 | if (s->type != CX18_ENC_STREAM_TYPE_TS) |
| 813 | atomic_dec(&cx->ana_capturing); |
| 814 | atomic_dec(&cx->tot_capturing); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 815 | |
| 816 | /* Clear capture and no-read bits */ |
| 817 | clear_bit(CX18_F_S_STREAMING, &s->s_flags); |
| 818 | |
Andy Walls | f68d0cf | 2008-11-05 21:19:15 -0300 | [diff] [blame] | 819 | /* Tell the CX23418 it can't use our buffers anymore */ |
| 820 | cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); |
| 821 | |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 822 | cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); |
Andy Walls | d3c5e70 | 2008-08-23 16:42:29 -0300 | [diff] [blame] | 823 | s->handle = CX18_INVALID_TASK_HANDLE; |
Andy Walls | 8711615 | 2009-04-13 22:42:43 -0300 | [diff] [blame] | 824 | clear_bit(CX18_F_S_STOPPING, &s->s_flags); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 825 | |
Hans Verkuil | 31554ae | 2008-05-25 11:21:27 -0300 | [diff] [blame] | 826 | if (atomic_read(&cx->tot_capturing) > 0) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 827 | return 0; |
| 828 | |
Hans Verkuil | a75b9be | 2010-12-31 10:22:52 -0300 | [diff] [blame] | 829 | cx2341x_handler_set_busy(&cx->cxhdl, 0); |
Andy Walls | b152642 | 2008-08-30 16:03:44 -0300 | [diff] [blame] | 830 | cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 831 | wake_up(&s->waitq); |
| 832 | |
| 833 | return 0; |
| 834 | } |
Devin Heitmueller | 0f4cf67 | 2009-11-19 23:23:57 -0300 | [diff] [blame] | 835 | EXPORT_SYMBOL(cx18_stop_v4l2_encode_stream); |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 836 | |
| 837 | u32 cx18_find_handle(struct cx18 *cx) |
| 838 | { |
| 839 | int i; |
| 840 | |
| 841 | /* find first available handle to be used for global settings */ |
| 842 | for (i = 0; i < CX18_MAX_STREAMS; i++) { |
| 843 | struct cx18_stream *s = &cx->streams[i]; |
| 844 | |
Andy Walls | 3d05913 | 2009-01-10 21:54:39 -0300 | [diff] [blame] | 845 | if (s->video_dev && (s->handle != CX18_INVALID_TASK_HANDLE)) |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 846 | return s->handle; |
| 847 | } |
Andy Walls | d3c5e70 | 2008-08-23 16:42:29 -0300 | [diff] [blame] | 848 | return CX18_INVALID_TASK_HANDLE; |
Hans Verkuil | 1c1e45d | 2008-04-28 20:24:33 -0300 | [diff] [blame] | 849 | } |
Andy Walls | ee2d64f | 2008-11-16 01:38:19 -0300 | [diff] [blame] | 850 | |
| 851 | struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle) |
| 852 | { |
| 853 | int i; |
| 854 | struct cx18_stream *s; |
| 855 | |
| 856 | if (handle == CX18_INVALID_TASK_HANDLE) |
| 857 | return NULL; |
| 858 | |
| 859 | for (i = 0; i < CX18_MAX_STREAMS; i++) { |
| 860 | s = &cx->streams[i]; |
| 861 | if (s->handle != handle) |
| 862 | continue; |
Andy Walls | 540bab9 | 2009-12-31 00:26:49 -0300 | [diff] [blame] | 863 | if (cx18_stream_enabled(s)) |
Andy Walls | ee2d64f | 2008-11-16 01:38:19 -0300 | [diff] [blame] | 864 | return s; |
| 865 | } |
| 866 | return NULL; |
| 867 | } |