--- /dev/null
+/*
+ *
+ * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
+ *
+ * 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 <linux/init.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+
+#include <media/v4l2-common.h>
+#include <media/v4l2-event.h>
+
+#include "saa7134-reg.h"
+#include "saa7134.h"
+
+/* ------------------------------------------------------------------ */
+
+MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
+MODULE_LICENSE("GPL");
+
+static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
+
+module_param_array(empress_nr, int, NULL, 0444);
+MODULE_PARM_DESC(empress_nr,"ts device number");
+
+static unsigned int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug,"enable debug messages");
+
+#define dprintk(fmt, arg...) if (debug) \
+ printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
+
+/* ------------------------------------------------------------------ */
+
+static int start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct saa7134_dmaqueue *dmaq = vq->drv_priv;
+ struct saa7134_dev *dev = dmaq->dev;
+ u32 leading_null_bytes = 0;
+ int err;
+
+ err = saa7134_ts_start_streaming(vq, count);
+ if (err)
+ return err;
+
+ /* If more cards start to need this, then this
+ should probably be added to the card definitions. */
+ switch (dev->board) {
+ case SAA7134_BOARD_BEHOLD_M6:
+ case SAA7134_BOARD_BEHOLD_M63:
+ case SAA7134_BOARD_BEHOLD_M6_EXTRA:
+ leading_null_bytes = 1;
+ break;
+ }
+ saa_call_all(dev, core, init, leading_null_bytes);
+ /* Unmute audio */
+ saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
+ saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
+ dev->empress_started = 1;
+ return 0;
+}
+
+static void stop_streaming(struct vb2_queue *vq)
+{
+ struct saa7134_dmaqueue *dmaq = vq->drv_priv;
+ struct saa7134_dev *dev = dmaq->dev;
+
+ saa7134_ts_stop_streaming(vq);
+ saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
+ msleep(20);
+ saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
+ msleep(100);
+ /* Mute audio */
+ saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
+ saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
+ dev->empress_started = 0;
+}
+
+static struct vb2_ops saa7134_empress_qops = {
+ .queue_setup = saa7134_ts_queue_setup,
+ .buf_init = saa7134_ts_buffer_init,
+ .buf_prepare = saa7134_ts_buffer_prepare,
+ .buf_queue = saa7134_vb2_buffer_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .start_streaming = start_streaming,
+ .stop_streaming = stop_streaming,
+};
+
+/* ------------------------------------------------------------------ */
+
+static int empress_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ if (f->index != 0)
+ return -EINVAL;
+
+ strlcpy(f->description, "MPEG TS", sizeof(f->description));
+ f->pixelformat = V4L2_PIX_FMT_MPEG;
+ f->flags = V4L2_FMT_FLAG_COMPRESSED;
+ return 0;
+}
+
+static int empress_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct saa7134_dev *dev = video_drvdata(file);
+ struct v4l2_mbus_framefmt mbus_fmt;
+
+ saa_call_all(dev, video, g_mbus_fmt, &mbus_fmt);
+
+ v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
+ f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
+ f->fmt.pix.bytesperline = 0;
+
+ return 0;
+}
+
+static int empress_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct saa7134_dev *dev = video_drvdata(file);
+ struct v4l2_mbus_framefmt mbus_fmt;
+
+ v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
+ saa_call_all(dev, video, s_mbus_fmt, &mbus_fmt);
+ v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
+
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
+ f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
+ f->fmt.pix.bytesperline = 0;
+
+ return 0;
+}
+
+static int empress_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct saa7134_dev *dev = video_drvdata(file);
+ struct v4l2_mbus_framefmt mbus_fmt;
+
+ v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
+ saa_call_all(dev, video, try_mbus_fmt, &mbus_fmt);
+ v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
+
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
+ f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
+ f->fmt.pix.bytesperline = 0;
+
+ return 0;
+}
+
+static const struct v4l2_file_operations ts_fops =
+{
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = vb2_fop_release,
+ .read = vb2_fop_read,
+ .poll = vb2_fop_poll,
+ .mmap = vb2_fop_mmap,
+ .unlocked_ioctl = video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops ts_ioctl_ops = {
+ .vidioc_querycap = saa7134_querycap,
+ .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = empress_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+ .vidioc_g_frequency = saa7134_g_frequency,
+ .vidioc_s_frequency = saa7134_s_frequency,
+ .vidioc_g_tuner = saa7134_g_tuner,
+ .vidioc_s_tuner = saa7134_s_tuner,
+ .vidioc_enum_input = saa7134_enum_input,
+ .vidioc_g_input = saa7134_g_input,
+ .vidioc_s_input = saa7134_s_input,
+ .vidioc_s_std = saa7134_s_std,
+ .vidioc_g_std = saa7134_g_std,
+ .vidioc_querystd = saa7134_querystd,
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+/* ----------------------------------------------------------- */
+
+static struct video_device saa7134_empress_template = {
+ .name = "saa7134-empress",
+ .fops = &ts_fops,
+ .ioctl_ops = &ts_ioctl_ops,
+
+ .tvnorms = SAA7134_NORMS,
+};
+
+static void empress_signal_update(struct work_struct *work)
+{
+ struct saa7134_dev* dev =
+ container_of(work, struct saa7134_dev, empress_workqueue);
+
+ if (dev->nosignal) {
+ dprintk("no video signal\n");
+ } else {
+ dprintk("video signal acquired\n");
+ }
+}
+
+static void empress_signal_change(struct saa7134_dev *dev)
+{
+ schedule_work(&dev->empress_workqueue);
+}
+
+static bool empress_ctrl_filter(const struct v4l2_ctrl *ctrl)
+{
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ case V4L2_CID_HUE:
+ case V4L2_CID_CONTRAST:
+ case V4L2_CID_SATURATION:
+ case V4L2_CID_AUDIO_MUTE:
+ case V4L2_CID_AUDIO_VOLUME:
+ case V4L2_CID_PRIVATE_INVERT:
+ case V4L2_CID_PRIVATE_AUTOMUTE:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int empress_init(struct saa7134_dev *dev)
+{
+ struct v4l2_ctrl_handler *hdl = &dev->empress_ctrl_handler;
+ struct vb2_queue *q;
+ int err;
+
+ dprintk("%s: %s\n",dev->name,__func__);
+ dev->empress_dev = video_device_alloc();
+ if (NULL == dev->empress_dev)
+ return -ENOMEM;
+ *(dev->empress_dev) = saa7134_empress_template;
+ dev->empress_dev->v4l2_dev = &dev->v4l2_dev;
+ dev->empress_dev->release = video_device_release;
+ dev->empress_dev->lock = &dev->lock;
+ snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
+ "%s empress (%s)", dev->name,
+ saa7134_boards[dev->board].name);
+ v4l2_ctrl_handler_init(hdl, 21);
+ v4l2_ctrl_add_handler(hdl, &dev->ctrl_handler, empress_ctrl_filter);
+ if (dev->empress_sd)
+ v4l2_ctrl_add_handler(hdl, dev->empress_sd->ctrl_handler, NULL);
+ if (hdl->error) {
+ video_device_release(dev->empress_dev);
+ return hdl->error;
+ }
+ dev->empress_dev->ctrl_handler = hdl;
+
+ INIT_WORK(&dev->empress_workqueue, empress_signal_update);
+
+ q = &dev->empress_vbq;
+ q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ /*
+ * Do not add VB2_USERPTR: the saa7134 DMA engine cannot handle
+ * transfers that do not start at the beginning of a page. A USERPTR
+ * can start anywhere in a page, so USERPTR support is a no-go.
+ */
+ q->io_modes = VB2_MMAP | VB2_READ;
+ q->drv_priv = &dev->ts_q;
+ q->ops = &saa7134_empress_qops;
+ q->gfp_flags = GFP_DMA32;
+ q->mem_ops = &vb2_dma_sg_memops;
+ q->buf_struct_size = sizeof(struct saa7134_buf);
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ q->lock = &dev->lock;
+ err = vb2_queue_init(q);
+ if (err)
+ return err;
+ dev->empress_dev->queue = q;
+
+ video_set_drvdata(dev->empress_dev, dev);
+ err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
+ empress_nr[dev->nr]);
+ if (err < 0) {
+ printk(KERN_INFO "%s: can't register video device\n",
+ dev->name);
+ video_device_release(dev->empress_dev);
+ dev->empress_dev = NULL;
+ return err;
+ }
+ printk(KERN_INFO "%s: registered device %s [mpeg]\n",
+ dev->name, video_device_node_name(dev->empress_dev));
+
+ empress_signal_update(&dev->empress_workqueue);
+ return 0;
+}
+
+static int empress_fini(struct saa7134_dev *dev)
+{
+ dprintk("%s: %s\n",dev->name,__func__);
+
+ if (NULL == dev->empress_dev)
+ return 0;
+ flush_work(&dev->empress_workqueue);
+ video_unregister_device(dev->empress_dev);
+ vb2_queue_release(&dev->empress_vbq);
+ v4l2_ctrl_handler_free(&dev->empress_ctrl_handler);
+ dev->empress_dev = NULL;
+ return 0;
+}
+
+static struct saa7134_mpeg_ops empress_ops = {
+ .type = SAA7134_MPEG_EMPRESS,
+ .init = empress_init,
+ .fini = empress_fini,
+ .signal_change = empress_signal_change,
+};
+
+static int __init empress_register(void)
+{
+ return saa7134_ts_register(&empress_ops);
+}
+
+static void __exit empress_unregister(void)
+{
+ saa7134_ts_unregister(&empress_ops);
+}
+
+module_init(empress_register);
+module_exit(empress_unregister);
Code Review / kvmfornfv.git / blobdiff