/* * Driver for the Conexant CX25821 PCIe bridge * * Copyright (C) 2009 Conexant Systems Inc. * Authors , * Based on Steven Toth cx23885 driver * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "cx25821-video.h" static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) { struct cx25821_buffer *buf = container_of(vb, struct cx25821_buffer, vb); struct cx25821_buffer *prev; struct cx25821_fh *fh = vq->priv_data; struct cx25821_dev *dev = fh->dev; struct cx25821_dmaqueue *q = &dev->vidq[SRAM_CH11]; /* add jump to stopper */ buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma); buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]); if (!list_empty(&q->queued)) { list_add_tail(&buf->vb.queue, &q->queued); buf->vb.state = VIDEOBUF_QUEUED; dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf, buf->vb.i); } else if (list_empty(&q->active)) { list_add_tail(&buf->vb.queue, &q->active); cx25821_start_video_dma(dev, q, buf, &dev->sram_channels[SRAM_CH11]); buf->vb.state = VIDEOBUF_ACTIVE; buf->count = q->count++; mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT); dprintk(2, "[%p/%d] buffer_queue - first active, buf cnt = %d, q->count = %d\n", buf, buf->vb.i, buf->count, q->count); } else { prev = list_entry(q->active.prev, struct cx25821_buffer, vb.queue); if (prev->vb.width == buf->vb.width && prev->vb.height == buf->vb.height && prev->fmt == buf->fmt) { list_add_tail(&buf->vb.queue, &q->active); buf->vb.state = VIDEOBUF_ACTIVE; buf->count = q->count++; prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); /* 64 bit bits 63-32 */ prev->risc.jmp[2] = cpu_to_le32(0); dprintk(2, "[%p/%d] buffer_queue - append to active, buf->count=%d\n", buf, buf->vb.i, buf->count); } else { list_add_tail(&buf->vb.queue, &q->queued); buf->vb.state = VIDEOBUF_QUEUED; dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf, buf->vb.i); } } if (list_empty(&q->active)) { dprintk(2, "active queue empty!\n"); } } static struct videobuf_queue_ops cx25821_video_qops = { .buf_setup = buffer_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, .buf_release = buffer_release, }; static int video_open(struct file *file) { int minor = video_devdata(file)->minor; struct cx25821_dev *h, *dev = NULL; struct cx25821_fh *fh; struct list_head *list; enum v4l2_buf_type type = 0; lock_kernel(); list_for_each(list, &cx25821_devlist) { h = list_entry(list, struct cx25821_dev, devlist); if (h->video_dev[SRAM_CH11] && h->video_dev[SRAM_CH11]->minor == minor) { dev = h; type = V4L2_BUF_TYPE_VIDEO_CAPTURE; } } if (NULL == dev) { unlock_kernel(); return -ENODEV; } printk("open minor=%d type=%s\n", minor, v4l2_type_names[type]); /* allocate + initialize per filehandle data */ fh = kzalloc(sizeof(*fh), GFP_KERNEL); if (NULL == fh) { unlock_kernel(); return -ENOMEM; } file->private_data = fh; fh->dev = dev; fh->type = type; fh->width = 720; if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK) fh->height = 576; else fh->height = 480; dev->channel_opened = 10; fh->fmt = format_by_fourcc(V4L2_PIX_FMT_YUYV); v4l2_prio_open(&dev->prio, &fh->prio); videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops, &dev->pci->dev, &dev->slock, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_INTERLACED, sizeof(struct cx25821_buffer), fh); dprintk(1, "post videobuf_queue_init()\n"); unlock_kernel(); return 0; } static ssize_t video_read(struct file *file, char __user * data, size_t count, loff_t * ppos) { struct cx25821_fh *fh = file->private_data; switch (fh->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: if (res_locked(fh->dev, RESOURCE_VIDEO11)) return -EBUSY; return videobuf_read_one(&fh->vidq, data, count, ppos, file->f_flags & O_NONBLOCK); default: BUG(); return 0; } } static unsigned int video_poll(struct file *file, struct poll_table_struct *wait) { struct cx25821_fh *fh = file->private_data; struct cx25821_buffer *buf; if (res_check(fh, RESOURCE_VIDEO11)) { /* streaming capture */ if (list_empty(&fh->vidq.stream)) return POLLERR; buf = list_entry(fh->vidq.stream.next, struct cx25821_buffer, vb.stream); } else { /* read() capture */ buf = (struct cx25821_buffer *)fh->vidq.read_buf; if (NULL == buf) return POLLERR; } poll_wait(file, &buf->vb.done, wait); if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR) return POLLIN | POLLRDNORM; return 0; } static int video_release(struct file *file) { struct cx25821_fh *fh = file->private_data; struct cx25821_dev *dev = fh->dev; //stop the risc engine and fifo //cx_write(channel11->dma_ctl, 0); /* stop video capture */ if (res_check(fh, RESOURCE_VIDEO11)) { videobuf_queue_cancel(&fh->vidq); res_free(dev, fh, RESOURCE_VIDEO11); } if (fh->vidq.read_buf) { buffer_release(&fh->vidq, fh->vidq.read_buf); kfree(fh->vidq.read_buf); } videobuf_mmap_free(&fh->vidq); v4l2_prio_close(&dev->prio, &fh->prio); file->private_data = NULL; kfree(fh); return 0; } static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) { struct cx25821_fh *fh = priv; struct cx25821_dev *dev = fh->dev; if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)) { return -EINVAL; } if (unlikely(i != fh->type)) { return -EINVAL; } if (unlikely(!res_get(dev, fh, get_resource(fh, RESOURCE_VIDEO11)))) { return -EBUSY; } return videobuf_streamon(get_queue(fh)); } static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) { struct cx25821_fh *fh = priv; struct cx25821_dev *dev = fh->dev; int err, res; if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; if (i != fh->type) return -EINVAL; res = get_resource(fh, RESOURCE_VIDEO11); err = videobuf_streamoff(get_queue(fh)); if (err < 0) return err; res_free(dev, fh, res); return 0; } static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cx25821_fh *fh = priv; struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; int err; if (fh) { err = v4l2_prio_check(&dev->prio, &fh->prio); if (0 != err) return err; } dprintk(2, "%s()\n", __func__); err = vidioc_try_fmt_vid_cap(file, priv, f); if (0 != err) return err; fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat); fh->width = f->fmt.pix.width; fh->height = f->fmt.pix.height; fh->vidq.field = f->fmt.pix.field; dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width, fh->height, fh->vidq.field); cx25821_call_all(dev, video, s_fmt, f); return 0; } static long video_ioctl_upstream11(struct file *file, unsigned int cmd, unsigned long arg) { struct cx25821_fh *fh = file->private_data; struct cx25821_dev *dev = fh->dev; int command = 0; struct upstream_user_struct *data_from_user; data_from_user = (struct upstream_user_struct *)arg; if (!data_from_user) { printk ("cx25821 in %s(): Upstream data is INVALID. Returning.\n", __func__); return 0; } command = data_from_user->command; if (command != UPSTREAM_START_AUDIO && command != UPSTREAM_STOP_AUDIO) { return 0; } dev->input_filename = data_from_user->input_filename; dev->input_audiofilename = data_from_user->input_filename; dev->vid_stdname = data_from_user->vid_stdname; dev->pixel_format = data_from_user->pixel_format; dev->channel_select = data_from_user->channel_select; dev->command = data_from_user->command; switch (command) { case UPSTREAM_START_AUDIO: cx25821_start_upstream_audio(dev, data_from_user); break; case UPSTREAM_STOP_AUDIO: cx25821_stop_upstream_audio(dev); break; } return 0; } static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) { struct cx25821_fh *fh = priv; return videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK); } static int vidioc_log_status(struct file *file, void *priv) { struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; char name[32 + 2]; snprintf(name, sizeof(name), "%s/2", dev->name); printk(KERN_INFO "%s/2: ============ START LOG STATUS ============\n", dev->name); cx25821_call_all(dev, core, log_status); printk(KERN_INFO "%s/2: ============= END LOG STATUS =============\n", dev->name); return 0; } static int vidioc_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctl) { struct cx25821_fh *fh = priv; struct cx25821_dev *dev = fh->dev; int err; if (fh) { err = v4l2_prio_check(&dev->prio, &fh->prio); if (0 != err) return err; } return 0; } // exported stuff static const struct v4l2_file_operations video_fops = { .owner = THIS_MODULE, .open = video_open, .release = video_release, .read = video_read, .poll = video_poll, .mmap = video_mmap, .ioctl = video_ioctl_upstream11, }; static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, .vidioc_reqbufs = vidioc_reqbufs, .vidioc_querybuf = vidioc_querybuf, .vidioc_qbuf = vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, #ifdef TUNER_FLAG .vidioc_s_std = vidioc_s_std, .vidioc_querystd = vidioc_querystd, #endif .vidioc_cropcap = vidioc_cropcap, .vidioc_s_crop = vidioc_s_crop, .vidioc_g_crop = vidioc_g_crop, .vidioc_enum_input = vidioc_enum_input, .vidioc_g_input = vidioc_g_input, .vidioc_s_input = vidioc_s_input, .vidioc_g_ctrl = vidioc_g_ctrl, .vidioc_s_ctrl = vidioc_s_ctrl, .vidioc_queryctrl = vidioc_queryctrl, .vidioc_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, .vidioc_log_status = vidioc_log_status, .vidioc_g_priority = vidioc_g_priority, .vidioc_s_priority = vidioc_s_priority, #ifdef CONFIG_VIDEO_V4L1_COMPAT .vidiocgmbuf = vidiocgmbuf, #endif #ifdef TUNER_FLAG .vidioc_g_tuner = vidioc_g_tuner, .vidioc_s_tuner = vidioc_s_tuner, .vidioc_g_frequency = vidioc_g_frequency, .vidioc_s_frequency = vidioc_s_frequency, #endif #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = vidioc_g_register, .vidioc_s_register = vidioc_s_register, #endif }; struct video_device cx25821_video_template11 = { .name = "cx25821-audioupstream", .fops = &video_fops, .minor = -1, .ioctl_ops = &video_ioctl_ops, .tvnorms = CX25821_NORMS, .current_norm = V4L2_STD_NTSC_M, };