1 files changed, 288 insertions, 0 deletions
diff --git a/drivers/media/video/cx18/cx18-dvb.c b/drivers/media/video/cx18/cx18-dvb.c
new file mode 100644
index 000000000000..65efe69d939a
--- /dev/null
+++ b/drivers/media/video/cx18/cx18-dvb.c
@@ -0,0 +1,288 @@
+/*
+ *  cx18 functions for DVB support
+ *
+ *  Copyright (c) 2008 Steven Toth <stoth@hauppauge.com>
+ *
+ *  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 "cx18-version.h"
+#include "cx18-dvb.h"
+#include "cx18-streams.h"
+#include "cx18-cards.h"
+#include "s5h1409.h"
+
+/* Wait until the MXL500X driver is merged */
+#ifdef HAVE_MXL500X
+#include "mxl500x.h"
+#endif
+
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+#define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
+
+#ifdef HAVE_MXL500X
+static struct mxl500x_config hauppauge_hvr1600_tuner = {
+	.delsys    = MXL500x_MODE_ATSC,
+	.octf      = MXL500x_OCTF_CH,
+	.xtal_freq = 16000000,
+	.iflo_freq = 5380000,
+	.ref_freq  = 322800000,
+	.rssi_ena  = MXL_RSSI_ENABLE,
+	.addr      = 0xC6 >> 1,
+};
+
+static struct s5h1409_config hauppauge_hvr1600_config = {
+	.demod_address = 0x32 >> 1,
+	.output_mode   = S5H1409_SERIAL_OUTPUT,
+	.gpio          = S5H1409_GPIO_ON,
+	.qam_if        = 44000,
+	.inversion     = S5H1409_INVERSION_OFF,
+	.status_mode   = S5H1409_DEMODLOCKING,
+	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
+
+};
+#endif
+
+static int dvb_register(struct cx18_stream *stream);
+
+/* Kernel DVB framework calls this when the feed needs to start.
+ * The CX18 framework should enable the transport DMA handling
+ * and queue processing.
+ */
+static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
+{
+	struct dvb_demux *demux = feed->demux;
+	struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
+	struct cx18 *cx = stream->cx;
+	int ret = -EINVAL;
+	u32 v;
+
+	CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
+			feed->pid, feed->index);
+	switch (cx->card->type) {
+	case CX18_CARD_HVR_1600_ESMT:
+	case CX18_CARD_HVR_1600_SAMSUNG:
+		v = read_reg(CX18_REG_DMUX_NUM_PORT_0_CONTROL);
+		v |= 0x00400000; /* Serial Mode */
+		v |= 0x00002000; /* Data Length - Byte */
+		v |= 0x00010000; /* Error - Polarity */
+		v |= 0x00020000; /* Error - Passthru */
+		v |= 0x000c0000; /* Error - Ignore */
+		write_reg(v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
+		break;
+
+	default:
+		/* Assumption - Parallel transport - Signalling
+		 * undefined or default.
+		 */
+		break;
+	}
+
+	if (!demux->dmx.frontend)
+		return -EINVAL;
+
+	if (stream) {
+		mutex_lock(&stream->dvb.feedlock);
+		if (stream->dvb.feeding++ == 0) {
+			CX18_DEBUG_INFO("Starting Transport DMA\n");
+			ret = cx18_start_v4l2_encode_stream(stream);
+		} else
+			ret = 0;
+		mutex_unlock(&stream->dvb.feedlock);
+	}
+
+	return ret;
+}
+
+/* Kernel DVB framework calls this when the feed needs to stop. */
+static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
+{
+	struct dvb_demux *demux = feed->demux;
+	struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
+	struct cx18 *cx = stream->cx;
+	int ret = -EINVAL;
+
+	CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
+			feed->pid, feed->index);
+
+	if (stream) {
+		mutex_lock(&stream->dvb.feedlock);
+		if (--stream->dvb.feeding == 0) {
+			CX18_DEBUG_INFO("Stopping Transport DMA\n");
+			ret = cx18_stop_v4l2_encode_stream(stream, 0);
+		} else
+			ret = 0;
+		mutex_unlock(&stream->dvb.feedlock);
+	}
+
+	return ret;
+}
+
+int cx18_dvb_register(struct cx18_stream *stream)
+{
+	struct cx18 *cx = stream->cx;
+	struct cx18_dvb *dvb = &stream->dvb;
+	struct dvb_adapter *dvb_adapter;
+	struct dvb_demux *dvbdemux;
+	struct dmx_demux *dmx;
+	int ret;
+
+	if (!dvb)
+		return -EINVAL;
+
+	ret = dvb_register_adapter(&dvb->dvb_adapter,
+			CX18_DRIVER_NAME,
+			THIS_MODULE, &cx->dev->dev, adapter_nr);
+	if (ret < 0)
+		goto err_out;
+
+	dvb_adapter = &dvb->dvb_adapter;
+
+	dvbdemux = &dvb->demux;
+
+	dvbdemux->priv = (void *)stream;
+
+	dvbdemux->filternum = 256;
+	dvbdemux->feednum = 256;
+	dvbdemux->start_feed = cx18_dvb_start_feed;
+	dvbdemux->stop_feed = cx18_dvb_stop_feed;
+	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
+		DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
+	ret = dvb_dmx_init(dvbdemux);
+	if (ret < 0)
+		goto err_dvb_unregister_adapter;
+
+	dmx = &dvbdemux->dmx;
+
+	dvb->hw_frontend.source = DMX_FRONTEND_0;
+	dvb->mem_frontend.source = DMX_MEMORY_FE;
+	dvb->dmxdev.filternum = 256;
+	dvb->dmxdev.demux = dmx;
+
+	ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
+	if (ret < 0)
+		goto err_dvb_dmx_release;
+
+	ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
+	if (ret < 0)
+		goto err_dvb_dmxdev_release;
+
+	ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
+	if (ret < 0)
+		goto err_remove_hw_frontend;
+
+	ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
+	if (ret < 0)
+		goto err_remove_mem_frontend;
+
+	ret = dvb_register(stream);
+	if (ret < 0)
+		goto err_disconnect_frontend;
+
+	dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
+
+	CX18_INFO("DVB Frontend registered\n");
+	mutex_init(&dvb->feedlock);
+	dvb->enabled = 1;
+	return ret;
+
+err_disconnect_frontend:
+	dmx->disconnect_frontend(dmx);
+err_remove_mem_frontend:
+	dmx->remove_frontend(dmx, &dvb->mem_frontend);
+err_remove_hw_frontend:
+	dmx->remove_frontend(dmx, &dvb->hw_frontend);
+err_dvb_dmxdev_release:
+	dvb_dmxdev_release(&dvb->dmxdev);
+err_dvb_dmx_release:
+	dvb_dmx_release(dvbdemux);
+err_dvb_unregister_adapter:
+	dvb_unregister_adapter(dvb_adapter);
+err_out:
+	return ret;
+}
+
+void cx18_dvb_unregister(struct cx18_stream *stream)
+{
+	struct cx18 *cx = stream->cx;
+	struct cx18_dvb *dvb = &stream->dvb;
+	struct dvb_adapter *dvb_adapter;
+	struct dvb_demux *dvbdemux;
+	struct dmx_demux *dmx;
+
+	CX18_INFO("unregister DVB\n");
+
+	dvb_adapter = &dvb->dvb_adapter;
+	dvbdemux = &dvb->demux;
+	dmx = &dvbdemux->dmx;
+
+	dmx->close(dmx);
+	dvb_net_release(&dvb->dvbnet);
+	dmx->remove_frontend(dmx, &dvb->mem_frontend);
+	dmx->remove_frontend(dmx, &dvb->hw_frontend);
+	dvb_dmxdev_release(&dvb->dmxdev);
+	dvb_dmx_release(dvbdemux);
+	dvb_unregister_frontend(dvb->fe);
+	dvb_frontend_detach(dvb->fe);
+	dvb_unregister_adapter(dvb_adapter);
+}
+
+/* All the DVB attach calls go here, this function get's modified
+ * for each new card. No other function in this file needs
+ * to change.
+ */
+static int dvb_register(struct cx18_stream *stream)
+{
+	struct cx18_dvb *dvb = &stream->dvb;
+	struct cx18 *cx = stream->cx;
+	int ret = 0;
+
+	switch (cx->card->type) {
+/* Wait until the MXL500X driver is merged */
+#ifdef HAVE_MXL500X
+	case CX18_CARD_HVR_1600_ESMT:
+	case CX18_CARD_HVR_1600_SAMSUNG:
+		dvb->fe = dvb_attach(s5h1409_attach,
+			&hauppauge_hvr1600_config,
+			&cx->i2c_adap[0]);
+		if (dvb->fe != NULL) {
+			dvb_attach(mxl500x_attach, dvb->fe,
+				&hauppauge_hvr1600_tuner,
+				&cx->i2c_adap[0]);
+			ret = 0;
+		}
+		break;
+#endif
+	default:
+		/* No Digital Tv Support */
+		break;
+	}
+
+	if (dvb->fe == NULL) {
+		CX18_ERR("frontend initialization failed\n");
+		return -1;
+	}
+
+	ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
+	if (ret < 0) {
+		if (dvb->fe->ops.release)
+			dvb->fe->ops.release(dvb->fe);
+		return ret;
+	}
+
+	return ret;
+}