Pileus Git - ~andy/linux/blob - drivers/staging/cx25821/cx25821-audups11.c

   1 /*
   2  *  Driver for the Conexant CX25821 PCIe bridge
   3  *
   4  *  Copyright (C) 2009 Conexant Systems Inc.
   5  *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
   6  *  Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *
  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., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 #include <linux/slab.h>
  25
  26 #include "cx25821-video.h"
  27
  28 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
  29 {
  30         struct cx25821_buffer *buf =
  31             container_of(vb, struct cx25821_buffer, vb);
  32         struct cx25821_buffer *prev;
  33         struct cx25821_fh *fh = vq->priv_data;
  34         struct cx25821_dev *dev = fh->dev;
  35         struct cx25821_dmaqueue *q = &dev->vidq[SRAM_CH11];
  36
  37         /* add jump to stopper */
  38         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
  39         buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
  40         buf->risc.jmp[2] = cpu_to_le32(0);      /* bits 63-32 */
  41
  42         dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]);
  43
  44         if (!list_empty(&q->queued)) {
  45                 list_add_tail(&buf->vb.queue, &q->queued);
  46                 buf->vb.state = VIDEOBUF_QUEUED;
  47                 dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf,
  48                         buf->vb.i);
  49
  50         } else if (list_empty(&q->active)) {
  51                 list_add_tail(&buf->vb.queue, &q->active);
  52                 cx25821_start_video_dma(dev, q, buf,
  53                                         &dev->sram_channels[SRAM_CH11]);
  54                 buf->vb.state = VIDEOBUF_ACTIVE;
  55                 buf->count = q->count++;
  56                 mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
  57                 dprintk(2,
  58                         "[%p/%d] buffer_queue - first active, buf cnt = %d, q->count = %d\n",
  59                         buf, buf->vb.i, buf->count, q->count);
  60         } else {
  61                 prev =
  62                     list_entry(q->active.prev, struct cx25821_buffer, vb.queue);
  63                 if (prev->vb.width == buf->vb.width
  64                     && prev->vb.height == buf->vb.height
  65                     && prev->fmt == buf->fmt) {
  66                         list_add_tail(&buf->vb.queue, &q->active);
  67                         buf->vb.state = VIDEOBUF_ACTIVE;
  68                         buf->count = q->count++;
  69                         prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
  70
  71                         /* 64 bit bits 63-32 */
  72                         prev->risc.jmp[2] = cpu_to_le32(0);
  73                         dprintk(2,
  74                                 "[%p/%d] buffer_queue - append to active, buf->count=%d\n",
  75                                 buf, buf->vb.i, buf->count);
  76
  77                 } else {
  78                         list_add_tail(&buf->vb.queue, &q->queued);
  79                         buf->vb.state = VIDEOBUF_QUEUED;
  80                         dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf,
  81                                 buf->vb.i);
  82                 }
  83         }
  84
  85         if (list_empty(&q->active))
  86                 dprintk(2, "active queue empty!\n");
  87 }
  88
  89 static struct videobuf_queue_ops cx25821_video_qops = {
  90         .buf_setup = cx25821_buffer_setup,
  91         .buf_prepare = cx25821_buffer_prepare,
  92         .buf_queue = buffer_queue,
  93         .buf_release = cx25821_buffer_release,
  94 };
  95
  96 static int video_open(struct file *file)
  97 {
  98         struct video_device *vdev = video_devdata(file);
  99         struct cx25821_dev *dev = video_drvdata(file);
 100         struct cx25821_fh *fh;
 101         enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 102
 103         printk(KERN_INFO "open dev=%s type=%s\n", video_device_node_name(vdev),
 104                 v4l2_type_names[type]);
 105
 106         /* allocate + initialize per filehandle data */
 107         fh = kzalloc(sizeof(*fh), GFP_KERNEL);
 108         if (NULL == fh)
 109                 return -ENOMEM;
 110
 111         lock_kernel();
 112
 113         file->private_data = fh;
 114         fh->dev = dev;
 115         fh->type = type;
 116         fh->width = 720;
 117
 118         if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
 119                 fh->height = 576;
 120         else
 121                 fh->height = 480;
 122
 123         dev->channel_opened = 10;
 124         fh->fmt = format_by_fourcc(V4L2_PIX_FMT_YUYV);
 125
 126         v4l2_prio_open(&dev->prio, &fh->prio);
 127
 128         videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops,
 129                                &dev->pci->dev, &dev->slock,
 130                                V4L2_BUF_TYPE_VIDEO_CAPTURE,
 131                                V4L2_FIELD_INTERLACED,
 132                                sizeof(struct cx25821_buffer), fh);
 133
 134         dprintk(1, "post videobuf_queue_init()\n");
 135         unlock_kernel();
 136
 137         return 0;
 138 }
 139
 140 static ssize_t video_read(struct file *file, char __user * data, size_t count,
 141                           loff_t *ppos)
 142 {
 143         struct cx25821_fh *fh = file->private_data;
 144
 145         switch (fh->type) {
 146         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 147                 if (cx25821_res_locked(fh->dev, RESOURCE_VIDEO11))
 148                         return -EBUSY;
 149
 150                 return videobuf_read_one(&fh->vidq, data, count, ppos,
 151                                          file->f_flags & O_NONBLOCK);
 152
 153         default:
 154                 BUG();
 155                 return 0;
 156         }
 157 }
 158
 159 static unsigned int video_poll(struct file *file,
 160                                struct poll_table_struct *wait)
 161 {
 162         struct cx25821_fh *fh = file->private_data;
 163         struct cx25821_buffer *buf;
 164
 165         if (cx25821_res_check(fh, RESOURCE_VIDEO11)) {
 166                 /* streaming capture */
 167                 if (list_empty(&fh->vidq.stream))
 168                         return POLLERR;
 169                 buf = list_entry(fh->vidq.stream.next,
 170                                  struct cx25821_buffer, vb.stream);
 171         } else {
 172                 /* read() capture */
 173                 buf = (struct cx25821_buffer *)fh->vidq.read_buf;
 174                 if (NULL == buf)
 175                         return POLLERR;
 176         }
 177
 178         poll_wait(file, &buf->vb.done, wait);
 179         if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR)
 180                 return POLLIN | POLLRDNORM;
 181         return 0;
 182 }
 183
 184 static int video_release(struct file *file)
 185 {
 186         struct cx25821_fh *fh = file->private_data;
 187         struct cx25821_dev *dev = fh->dev;
 188
 189         /* stop the risc engine and fifo */
 190         /* cx_write(channel11->dma_ctl, 0); */
 191
 192         /* stop video capture */
 193         if (cx25821_res_check(fh, RESOURCE_VIDEO11)) {
 194                 videobuf_queue_cancel(&fh->vidq);
 195                 cx25821_res_free(dev, fh, RESOURCE_VIDEO11);
 196         }
 197
 198         if (fh->vidq.read_buf) {
 199                 cx25821_buffer_release(&fh->vidq, fh->vidq.read_buf);
 200                 kfree(fh->vidq.read_buf);
 201         }
 202
 203         videobuf_mmap_free(&fh->vidq);
 204
 205         v4l2_prio_close(&dev->prio, fh->prio);
 206
 207         file->private_data = NULL;
 208         kfree(fh);
 209
 210         return 0;
 211 }
 212
 213 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 214 {
 215         struct cx25821_fh *fh = priv;
 216         struct cx25821_dev *dev = fh->dev;
 217
 218         if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
 219                 return -EINVAL;
 220
 221         if (unlikely(i != fh->type))
 222                 return -EINVAL;
 223
 224         if (unlikely(!cx25821_res_get(dev, fh, cx25821_get_resource(fh, RESOURCE_VIDEO11))))
 225                 return -EBUSY;
 226
 227         return videobuf_streamon(get_queue(fh));
 228 }
 229
 230 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
 231 {
 232         struct cx25821_fh *fh = priv;
 233         struct cx25821_dev *dev = fh->dev;
 234         int err, res;
 235
 236         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 237                 return -EINVAL;
 238         if (i != fh->type)
 239                 return -EINVAL;
 240
 241         res = cx25821_get_resource(fh, RESOURCE_VIDEO11);
 242         err = videobuf_streamoff(get_queue(fh));
 243         if (err < 0)
 244                 return err;
 245         cx25821_res_free(dev, fh, res);
 246         return 0;
 247 }
 248
 249 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 250                                 struct v4l2_format *f)
 251 {
 252         struct cx25821_fh *fh = priv;
 253         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
 254         int err;
 255
 256         if (fh) {
 257                 err = v4l2_prio_check(&dev->prio, fh->prio);
 258                 if (0 != err)
 259                         return err;
 260         }
 261
 262         dprintk(2, "%s()\n", __func__);
 263         err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
 264
 265         if (0 != err)
 266                 return err;
 267         fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 268         fh->width = f->fmt.pix.width;
 269         fh->height = f->fmt.pix.height;
 270         fh->vidq.field = f->fmt.pix.field;
 271         dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width,
 272                 fh->height, fh->vidq.field);
 273         cx25821_call_all(dev, video, s_fmt, f);
 274         return 0;
 275 }
 276
 277 static long video_ioctl_upstream11(struct file *file, unsigned int cmd,
 278                                    unsigned long arg)
 279 {
 280         struct cx25821_fh *fh = file->private_data;
 281         struct cx25821_dev *dev = fh->dev;
 282         int command = 0;
 283         struct upstream_user_struct *data_from_user;
 284
 285         data_from_user = (struct upstream_user_struct *)arg;
 286
 287         if (!data_from_user) {
 288                 printk
 289                     ("cx25821 in %s(): Upstream data is INVALID. Returning.\n",
 290                      __func__);
 291                 return 0;
 292         }
 293
 294         command = data_from_user->command;
 295
 296         if (command != UPSTREAM_START_AUDIO && command != UPSTREAM_STOP_AUDIO)
 297                 return 0;
 298
 299         dev->input_filename = data_from_user->input_filename;
 300         dev->input_audiofilename = data_from_user->input_filename;
 301         dev->vid_stdname = data_from_user->vid_stdname;
 302         dev->pixel_format = data_from_user->pixel_format;
 303         dev->channel_select = data_from_user->channel_select;
 304         dev->command = data_from_user->command;
 305
 306         switch (command) {
 307         case UPSTREAM_START_AUDIO:
 308                 cx25821_start_upstream_audio(dev, data_from_user);
 309                 break;
 310
 311         case UPSTREAM_STOP_AUDIO:
 312                 cx25821_stop_upstream_audio(dev);
 313                 break;
 314         }
 315
 316         return 0;
 317 }
 318
 319 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
 320 {
 321         struct cx25821_fh *fh = priv;
 322         return videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK);
 323 }
 324
 325 static int vidioc_log_status(struct file *file, void *priv)
 326 {
 327         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
 328         char name[32 + 2];
 329
 330         snprintf(name, sizeof(name), "%s/2", dev->name);
 331         printk(KERN_INFO "%s/2: ============  START LOG STATUS  ============\n",
 332                dev->name);
 333         cx25821_call_all(dev, core, log_status);
 334         printk(KERN_INFO "%s/2: =============  END LOG STATUS  =============\n",
 335                dev->name);
 336         return 0;
 337 }
 338
 339 static int vidioc_s_ctrl(struct file *file, void *priv,
 340                          struct v4l2_control *ctl)
 341 {
 342         struct cx25821_fh *fh = priv;
 343         struct cx25821_dev *dev;
 344         int err;
 345
 346         if (fh) {
 347                 dev = fh->dev;
 348                 err = v4l2_prio_check(&dev->prio, fh->prio);
 349                 if (0 != err)
 350                         return err;
 351         }
 352         return 0;
 353 }
 354
 355 /* exported stuff */
 356 static const struct v4l2_file_operations video_fops = {
 357         .owner = THIS_MODULE,
 358         .open = video_open,
 359         .release = video_release,
 360         .read = video_read,
 361         .poll = video_poll,
 362         .mmap = cx25821_video_mmap,
 363         .ioctl = video_ioctl_upstream11,
 364 };
 365
 366 static const struct v4l2_ioctl_ops video_ioctl_ops = {
 367         .vidioc_querycap = cx25821_vidioc_querycap,
 368         .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
 369         .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
 370         .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
 371         .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
 372         .vidioc_reqbufs = cx25821_vidioc_reqbufs,
 373         .vidioc_querybuf = cx25821_vidioc_querybuf,
 374         .vidioc_qbuf = cx25821_vidioc_qbuf,
 375         .vidioc_dqbuf = vidioc_dqbuf,
 376 #ifdef TUNER_FLAG
 377         .vidioc_s_std = cx25821_vidioc_s_std,
 378         .vidioc_querystd = cx25821_vidioc_querystd,
 379 #endif
 380         .vidioc_cropcap = cx25821_vidioc_cropcap,
 381         .vidioc_s_crop = cx25821_vidioc_s_crop,
 382         .vidioc_g_crop = cx25821_vidioc_g_crop,
 383         .vidioc_enum_input = cx25821_vidioc_enum_input,
 384         .vidioc_g_input = cx25821_vidioc_g_input,
 385         .vidioc_s_input = cx25821_vidioc_s_input,
 386         .vidioc_g_ctrl = cx25821_vidioc_g_ctrl,
 387         .vidioc_s_ctrl = vidioc_s_ctrl,
 388         .vidioc_queryctrl = cx25821_vidioc_queryctrl,
 389         .vidioc_streamon = vidioc_streamon,
 390         .vidioc_streamoff = vidioc_streamoff,
 391         .vidioc_log_status = vidioc_log_status,
 392         .vidioc_g_priority = cx25821_vidioc_g_priority,
 393         .vidioc_s_priority = cx25821_vidioc_s_priority,
 394 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 395         .vidiocgmbuf = cx25821_vidiocgmbuf,
 396 #endif
 397 #ifdef TUNER_FLAG
 398         .vidioc_g_tuner = cx25821_vidioc_g_tuner,
 399         .vidioc_s_tuner = cx25821_vidioc_s_tuner,
 400         .vidioc_g_frequency = cx25821_vidioc_g_frequency,
 401         .vidioc_s_frequency = cx25821_vidioc_s_frequency,
 402 #endif
 403 #ifdef CONFIG_VIDEO_ADV_DEBUG
 404         .vidioc_g_register = cx25821_vidioc_g_register,
 405         .vidioc_s_register = cx25821_vidioc_s_register,
 406 #endif
 407 };
 408
 409 struct video_device cx25821_video_template11 = {
 410         .name = "cx25821-audioupstream",
 411         .fops = &video_fops,
 412         .ioctl_ops = &video_ioctl_ops,
 413         .tvnorms = CX25821_NORMS,
 414         .current_norm = V4L2_STD_NTSC_M,
 415 };