[media] ngene: CXD2099AR Common Interface driver
Driver for the Common Interface Controller CXD2099AR.
Supports the CI of the cineS2 DVB-S2.
For now, data is passed through '/dev/dvb/adapterX/sec0':
- Encrypted data must be written to 'sec0'.
- Decrypted data can be read from 'sec0'.
- Setup the CAM using device 'ca0'.
Signed-off-by: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/ngene/ngene-dvb.c b/drivers/media/dvb/ngene/ngene-dvb.c
index 8bb1593..0b49432 100644
--- a/drivers/media/dvb/ngene/ngene-dvb.c
+++ b/drivers/media/dvb/ngene/ngene-dvb.c
@@ -47,6 +47,64 @@
/* COMMAND API interface ****************************************************/
/****************************************************************************/
+static ssize_t ts_write(struct file *file, const char *buf,
+ size_t count, loff_t *ppos)
+{
+ struct dvb_device *dvbdev = file->private_data;
+ struct ngene_channel *chan = dvbdev->priv;
+ struct ngene *dev = chan->dev;
+
+ if (wait_event_interruptible(dev->tsout_rbuf.queue,
+ dvb_ringbuffer_free
+ (&dev->tsout_rbuf) >= count) < 0)
+ return 0;
+
+ dvb_ringbuffer_write(&dev->tsout_rbuf, buf, count);
+
+ return count;
+}
+
+static ssize_t ts_read(struct file *file, char *buf,
+ size_t count, loff_t *ppos)
+{
+ struct dvb_device *dvbdev = file->private_data;
+ struct ngene_channel *chan = dvbdev->priv;
+ struct ngene *dev = chan->dev;
+ int left, avail;
+
+ left = count;
+ while (left) {
+ if (wait_event_interruptible(
+ dev->tsin_rbuf.queue,
+ dvb_ringbuffer_avail(&dev->tsin_rbuf) > 0) < 0)
+ return -EAGAIN;
+ avail = dvb_ringbuffer_avail(&dev->tsin_rbuf);
+ if (avail > left)
+ avail = left;
+ dvb_ringbuffer_read_user(&dev->tsin_rbuf, buf, avail);
+ left -= avail;
+ buf += avail;
+ }
+ return count;
+}
+
+static const struct file_operations ci_fops = {
+ .owner = THIS_MODULE,
+ .read = ts_read,
+ .write = ts_write,
+ .open = dvb_generic_open,
+ .release = dvb_generic_release,
+};
+
+struct dvb_device ngene_dvbdev_ci = {
+ .priv = 0,
+ .readers = -1,
+ .writers = -1,
+ .users = -1,
+ .fops = &ci_fops,
+};
+
+
/****************************************************************************/
/* DVB functions and API interface ******************************************/
/****************************************************************************/
@@ -63,11 +121,19 @@
void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
{
struct ngene_channel *chan = priv;
+ struct ngene *dev = chan->dev;
+ if (flags & DF_SWAP32)
+ swap_buffer(buf, len);
+ if (dev->ci.en && chan->number == 2) {
+ if (dvb_ringbuffer_free(&dev->tsin_rbuf) > len) {
+ dvb_ringbuffer_write(&dev->tsin_rbuf, buf, len);
+ wake_up_interruptible(&dev->tsin_rbuf.queue);
+ }
+ return 0;
+ }
if (chan->users > 0) {
- if (flags & DF_SWAP32)
- swap_buffer(buf, len);
dvb_dmx_swfilter(&chan->demux, buf, len);
}
return NULL;