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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/media/usb/dvb-usb/dvb-usb-urb.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/media/usb/dvb-usb/dvb-usb-urb.c')
-rw-r--r--kernel/drivers/media/usb/dvb-usb/dvb-usb-urb.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/kernel/drivers/media/usb/dvb-usb/dvb-usb-urb.c b/kernel/drivers/media/usb/dvb-usb/dvb-usb-urb.c
new file mode 100644
index 000000000..5c8f65134
--- /dev/null
+++ b/kernel/drivers/media/usb/dvb-usb/dvb-usb-urb.c
@@ -0,0 +1,121 @@
+/* dvb-usb-urb.c is part of the DVB USB library.
+ *
+ * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
+ * see dvb-usb-init.c for copyright information.
+ *
+ * This file keeps functions for initializing and handling the
+ * USB and URB stuff.
+ */
+#include "dvb-usb-common.h"
+
+int dvb_usb_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf,
+ u16 rlen, int delay_ms)
+{
+ int actlen,ret = -ENOMEM;
+
+ if (!d || wbuf == NULL || wlen == 0)
+ return -EINVAL;
+
+ if (d->props.generic_bulk_ctrl_endpoint == 0) {
+ err("endpoint for generic control not specified.");
+ return -EINVAL;
+ }
+
+ if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
+ return ret;
+
+ deb_xfer(">>> ");
+ debug_dump(wbuf,wlen,deb_xfer);
+
+ ret = usb_bulk_msg(d->udev,usb_sndbulkpipe(d->udev,
+ d->props.generic_bulk_ctrl_endpoint), wbuf,wlen,&actlen,
+ 2000);
+
+ if (ret)
+ err("bulk message failed: %d (%d/%d)",ret,wlen,actlen);
+ else
+ ret = actlen != wlen ? -1 : 0;
+
+ /* an answer is expected, and no error before */
+ if (!ret && rbuf && rlen) {
+ if (delay_ms)
+ msleep(delay_ms);
+
+ ret = usb_bulk_msg(d->udev,usb_rcvbulkpipe(d->udev,
+ d->props.generic_bulk_ctrl_endpoint_response ?
+ d->props.generic_bulk_ctrl_endpoint_response :
+ d->props.generic_bulk_ctrl_endpoint),rbuf,rlen,&actlen,
+ 2000);
+
+ if (ret)
+ err("recv bulk message failed: %d",ret);
+ else {
+ deb_xfer("<<< ");
+ debug_dump(rbuf,actlen,deb_xfer);
+ }
+ }
+
+ mutex_unlock(&d->usb_mutex);
+ return ret;
+}
+EXPORT_SYMBOL(dvb_usb_generic_rw);
+
+int dvb_usb_generic_write(struct dvb_usb_device *d, u8 *buf, u16 len)
+{
+ return dvb_usb_generic_rw(d,buf,len,NULL,0,0);
+}
+EXPORT_SYMBOL(dvb_usb_generic_write);
+
+static void dvb_usb_data_complete(struct usb_data_stream *stream, u8 *buffer, size_t length)
+{
+ struct dvb_usb_adapter *adap = stream->user_priv;
+ if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
+ dvb_dmx_swfilter(&adap->demux, buffer, length);
+}
+
+static void dvb_usb_data_complete_204(struct usb_data_stream *stream, u8 *buffer, size_t length)
+{
+ struct dvb_usb_adapter *adap = stream->user_priv;
+ if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
+ dvb_dmx_swfilter_204(&adap->demux, buffer, length);
+}
+
+static void dvb_usb_data_complete_raw(struct usb_data_stream *stream,
+ u8 *buffer, size_t length)
+{
+ struct dvb_usb_adapter *adap = stream->user_priv;
+ if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
+ dvb_dmx_swfilter_raw(&adap->demux, buffer, length);
+}
+
+int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap)
+{
+ int i, ret = 0;
+ for (i = 0; i < adap->props.num_frontends; i++) {
+
+ adap->fe_adap[i].stream.udev = adap->dev->udev;
+ if (adap->props.fe[i].caps & DVB_USB_ADAP_RECEIVES_204_BYTE_TS)
+ adap->fe_adap[i].stream.complete =
+ dvb_usb_data_complete_204;
+ else
+ if (adap->props.fe[i].caps & DVB_USB_ADAP_RECEIVES_RAW_PAYLOAD)
+ adap->fe_adap[i].stream.complete =
+ dvb_usb_data_complete_raw;
+ else
+ adap->fe_adap[i].stream.complete = dvb_usb_data_complete;
+ adap->fe_adap[i].stream.user_priv = adap;
+ ret = usb_urb_init(&adap->fe_adap[i].stream,
+ &adap->props.fe[i].stream);
+ if (ret < 0)
+ break;
+ }
+ return ret;
+}
+
+int dvb_usb_adapter_stream_exit(struct dvb_usb_adapter *adap)
+{
+ int i;
+ for (i = 0; i < adap->props.num_frontends; i++)
+ usb_urb_exit(&adap->fe_adap[i].stream);
+ return 0;
+}