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
  90 static struct videobuf_queue_ops cx25821_video_qops = {
  91         .buf_setup = buffer_setup,
  92         .buf_prepare = buffer_prepare,
  93         .buf_queue = buffer_queue,
  94         .buf_release = buffer_release,
  95 };
  96
  97 static int video_open(struct file *file)
  98 {
  99         struct video_device *vdev = video_devdata(file);
 100         struct cx25821_dev *dev = video_drvdata(file);
 101         struct cx25821_fh *fh;
 102         enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 103
 104         printk("open dev=%s type=%s\n", video_device_node_name(vdev),
 105                 v4l2_type_names[type]);
 106
 107         /* allocate + initialize per filehandle data */
 108         fh = kzalloc(sizeof(*fh), GFP_KERNEL);
 109         if (NULL == fh)
 110                 return -ENOMEM;
 111
 112         lock_kernel();
 113
 114         file->private_data = fh;
 115         fh->dev = dev;
 116         fh->type = type;
 117         fh->width = 720;
 118
 119         if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
 120                 fh->height = 576;
 121         else
 122                 fh->height = 480;
 123
 124         dev->channel_opened = 10;
 125         fh->fmt = format_by_fourcc(V4L2_PIX_FMT_YUYV);
 126
 127         v4l2_prio_open(&dev->prio, &fh->prio);
 128
 129         videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops,
 130                                &dev->pci->dev, &dev->slock,
 131                                V4L2_BUF_TYPE_VIDEO_CAPTURE,
 132                                V4L2_FIELD_INTERLACED,
 133                                sizeof(struct cx25821_buffer), fh);
 134
 135         dprintk(1, "post videobuf_queue_init()\n");
 136         unlock_kernel();
 137
 138         return 0;
 139 }
 140
 141 static ssize_t video_read(struct file *file, char __user * data, size_t count,
 142                           loff_t * ppos)
 143 {
 144         struct cx25821_fh *fh = file->private_data;
 145
 146         switch (fh->type) {
 147         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 148                 if (res_locked(fh->dev, RESOURCE_VIDEO11))
 149                         return -EBUSY;
 150
 151                 return videobuf_read_one(&fh->vidq, data, count, ppos,
 152                                          file->f_flags & O_NONBLOCK);
 153
 154         default:
 155                 BUG();
 156                 return 0;
 157         }
 158 }
 159
 160 static unsigned int video_poll(struct file *file,
 161                                struct poll_table_struct *wait)
 162 {
 163         struct cx25821_fh *fh = file->private_data;
 164         struct cx25821_buffer *buf;
 165
 166         if (res_check(fh, RESOURCE_VIDEO11)) {
 167                 /* streaming capture */
 168                 if (list_empty(&fh->vidq.stream))
 169                         return POLLERR;
 170                 buf = list_entry(fh->vidq.stream.next,
 171                                  struct cx25821_buffer, vb.stream);
 172         } else {
 173                 /* read() capture */
 174                 buf = (struct cx25821_buffer *)fh->vidq.read_buf;
 175                 if (NULL == buf)
 176                         return POLLERR;
 177         }
 178
 179         poll_wait(file, &buf->vb.done, wait);
 180         if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR)
 181                 return POLLIN | POLLRDNORM;
 182         return 0;
 183 }
 184
 185 static int video_release(struct file *file)
 186 {
 187         struct cx25821_fh *fh = file->private_data;
 188         struct cx25821_dev *dev = fh->dev;
 189
 190         //stop the risc engine and fifo
 191         //cx_write(channel11->dma_ctl, 0);
 192
 193         /* stop video capture */
 194         if (res_check(fh, RESOURCE_VIDEO11)) {
 195                 videobuf_queue_cancel(&fh->vidq);
 196                 res_free(dev, fh, RESOURCE_VIDEO11);
 197         }
 198
 199         if (fh->vidq.read_buf) {
 200                 buffer_release(&fh->vidq, fh->vidq.read_buf);
 201                 kfree(fh->vidq.read_buf);
 202         }
 203
 204         videobuf_mmap_free(&fh->vidq);
 205
 206         v4l2_prio_close(&dev->prio, &fh->prio);
 207
 208         file->private_data = NULL;
 209         kfree(fh);
 210
 211         return 0;
 212 }
 213
 214 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 215 {
 216         struct cx25821_fh *fh = priv;
 217         struct cx25821_dev *dev = fh->dev;
 218
 219         if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)) {
 220                 return -EINVAL;
 221         }
 222
 223         if (unlikely(i != fh->type)) {
 224                 return -EINVAL;
 225         }
 226
 227         if (unlikely(!res_get(dev, fh, get_resource(fh, RESOURCE_VIDEO11)))) {
 228                 return -EBUSY;
 229         }
 230
 231         return videobuf_streamon(get_queue(fh));
 232 }
 233
 234 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
 235 {
 236         struct cx25821_fh *fh = priv;
 237         struct cx25821_dev *dev = fh->dev;
 238         int err, res;
 239
 240         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 241                 return -EINVAL;
 242         if (i != fh->type)
 243                 return -EINVAL;
 244
 245         res = get_resource(fh, RESOURCE_VIDEO11);
 246         err = videobuf_streamoff(get_queue(fh));
 247         if (err < 0)
 248                 return err;
 249         res_free(dev, fh, res);
 250         return 0;
 251 }
 252
 253 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 254                                 struct v4l2_format *f)
 255 {
 256         struct cx25821_fh *fh = priv;
 257         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
 258         int err;
 259
 260         if (fh) {
 261                 err = v4l2_prio_check(&dev->prio, &fh->prio);
 262                 if (0 != err)
 263                         return err;
 264         }
 265
 266         dprintk(2, "%s()\n", __func__);
 267         err = vidioc_try_fmt_vid_cap(file, priv, f);
 268
 269         if (0 != err)
 270                 return err;
 271         fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 272         fh->width = f->fmt.pix.width;
 273         fh->height = f->fmt.pix.height;
 274         fh->vidq.field = f->fmt.pix.field;
 275         dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width,
 276                 fh->height, fh->vidq.field);
 277         cx25821_call_all(dev, video, s_fmt, f);
 278         return 0;
 279 }
 280
 281 static long video_ioctl_upstream11(struct file *file, unsigned int cmd,
 282                                    unsigned long arg)
 283 {
 284         struct cx25821_fh *fh = file->private_data;
 285         struct cx25821_dev *dev = fh->dev;
 286         int command = 0;
 287         struct upstream_user_struct *data_from_user;
 288
 289         data_from_user = (struct upstream_user_struct *)arg;
 290
 291         if (!data_from_user) {
 292                 printk
 293                     ("cx25821 in %s(): Upstream data is INVALID. Returning.\n",
 294                      __func__);
 295                 return 0;
 296         }
 297
 298         command = data_from_user->command;
 299
 300         if (command != UPSTREAM_START_AUDIO && command != UPSTREAM_STOP_AUDIO) {
 301                 return 0;
 302         }
 303
 304         dev->input_filename = data_from_user->input_filename;
 305         dev->input_audiofilename = data_from_user->input_filename;
 306         dev->vid_stdname = data_from_user->vid_stdname;
 307         dev->pixel_format = data_from_user->pixel_format;
 308         dev->channel_select = data_from_user->channel_select;
 309         dev->command = data_from_user->command;
 310
 311         switch (command) {
 312         case UPSTREAM_START_AUDIO:
 313                 cx25821_start_upstream_audio(dev, data_from_user);
 314                 break;
 315
 316         case UPSTREAM_STOP_AUDIO:
 317                 cx25821_stop_upstream_audio(dev);
 318                 break;
 319         }
 320
 321         return 0;
 322 }
 323
 324 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
 325 {
 326         struct cx25821_fh *fh = priv;
 327         return videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK);
 328 }
 329
 330 static int vidioc_log_status(struct file *file, void *priv)
 331 {
 332         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
 333         char name[32 + 2];
 334
 335         snprintf(name, sizeof(name), "%s/2", dev->name);
 336         printk(KERN_INFO "%s/2: ============  START LOG STATUS  ============\n",
 337                dev->name);
 338         cx25821_call_all(dev, core, log_status);
 339         printk(KERN_INFO "%s/2: =============  END LOG STATUS  =============\n",
 340                dev->name);
 341         return 0;
 342 }
 343
 344 static int vidioc_s_ctrl(struct file *file, void *priv,
 345                          struct v4l2_control *ctl)
 346 {
 347         struct cx25821_fh *fh = priv;
 348         struct cx25821_dev *dev;
 349         int err;
 350
 351         if (fh) {
 352                 dev = fh->dev;
 353                 err = v4l2_prio_check(&dev->prio, &fh->prio);
 354                 if (0 != err)
 355                         return err;
 356         }
 357         return 0;
 358 }
 359
 360 // exported stuff
 361 static const struct v4l2_file_operations video_fops = {
 362         .owner = THIS_MODULE,
 363         .open = video_open,
 364         .release = video_release,
 365         .read = video_read,
 366         .poll = video_poll,
 367         .mmap = video_mmap,
 368         .ioctl = video_ioctl_upstream11,
 369 };
 370
 371 static const struct v4l2_ioctl_ops video_ioctl_ops = {
 372         .vidioc_querycap = vidioc_querycap,
 373         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
 374         .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
 375         .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
 376         .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
 377         .vidioc_reqbufs = vidioc_reqbufs,
 378         .vidioc_querybuf = vidioc_querybuf,
 379         .vidioc_qbuf = vidioc_qbuf,
 380         .vidioc_dqbuf = vidioc_dqbuf,
 381 #ifdef TUNER_FLAG
 382         .vidioc_s_std = vidioc_s_std,
 383         .vidioc_querystd = vidioc_querystd,
 384 #endif
 385         .vidioc_cropcap = vidioc_cropcap,
 386         .vidioc_s_crop = vidioc_s_crop,
 387         .vidioc_g_crop = vidioc_g_crop,
 388         .vidioc_enum_input = vidioc_enum_input,
 389         .vidioc_g_input = vidioc_g_input,
 390         .vidioc_s_input = vidioc_s_input,
 391         .vidioc_g_ctrl = vidioc_g_ctrl,
 392         .vidioc_s_ctrl = vidioc_s_ctrl,
 393         .vidioc_queryctrl = vidioc_queryctrl,
 394         .vidioc_streamon = vidioc_streamon,
 395         .vidioc_streamoff = vidioc_streamoff,
 396         .vidioc_log_status = vidioc_log_status,
 397         .vidioc_g_priority = vidioc_g_priority,
 398         .vidioc_s_priority = vidioc_s_priority,
 399 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 400         .vidiocgmbuf = vidiocgmbuf,
 401 #endif
 402 #ifdef TUNER_FLAG
 403         .vidioc_g_tuner = vidioc_g_tuner,
 404         .vidioc_s_tuner = vidioc_s_tuner,
 405         .vidioc_g_frequency = vidioc_g_frequency,
 406         .vidioc_s_frequency = vidioc_s_frequency,
 407 #endif
 408 #ifdef CONFIG_VIDEO_ADV_DEBUG
 409         .vidioc_g_register = vidioc_g_register,
 410         .vidioc_s_register = vidioc_s_register,
 411 #endif
 412 };
 413
 414 struct video_device cx25821_video_template11 = {
 415         .name = "cx25821-audioupstream",
 416         .fops = &video_fops,
 417         .ioctl_ops = &video_ioctl_ops,
 418         .tvnorms = CX25821_NORMS,
 419         .current_norm = V4L2_STD_NTSC_M,
 420 };