[media] cobalt: add new driver

The cobalt device is a PCIe card with 4 HDMI inputs (adv7604) and a
connector that can be used to hook up an adv7511 transmitter or an
adv7842 receiver daughterboard.

This device is used within Cisco but is sadly not available outside
of Cisco. Nevertheless it is a very interesting driver that can serve
as an example of how to support HDMI hardware and how to use the popular
adv devices.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/drivers/media/pci/cobalt/cobalt-alsa.h b/drivers/media/pci/cobalt/cobalt-alsa.h
new file mode 100644
index 0000000..08db699
--- /dev/null
+++ b/drivers/media/pci/cobalt/cobalt-alsa.h
@@ -0,0 +1,41 @@
+/*
+ *  ALSA interface to cobalt PCM capture streams
+ *
+ *  Copyright 2014-2015 Cisco Systems, Inc. and/or its affiliates.
+ *  All rights reserved.
+ *
+ *  This program is free software; you may redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ *  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ *  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ *  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+struct snd_card;
+
+struct snd_cobalt_card {
+	struct cobalt_stream *s;
+	struct snd_card *sc;
+	unsigned int capture_transfer_done;
+	unsigned int hwptr_done_capture;
+	unsigned alsa_record_cnt;
+	struct snd_pcm_substream *capture_pcm_substream;
+
+	unsigned int pb_size;
+	unsigned int pb_count;
+	unsigned int pb_pos;
+	unsigned pb_filled;
+	bool alsa_pb_channel;
+	unsigned alsa_playback_cnt;
+	struct snd_pcm_substream *playback_pcm_substream;
+};
+
+int cobalt_alsa_init(struct cobalt_stream *s);
+void cobalt_alsa_exit(struct cobalt_stream *s);