1 files changed, 248 insertions, 0 deletions

diff --git a/drivers/media/firewire/firedtv-dvb.c b/drivers/media/firewire/firedtv-dvb.c
new file mode 100644
index 000000000000..eb7496eab130
--- /dev/null
+++ b/drivers/media/firewire/firedtv-dvb.c
@@ -0,0 +1,248 @@
+/*
+ * FireDTV driver (formerly known as FireSAT)
+ *
+ * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
+ * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
+ *
+ *      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.
+ */
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+
+#include <dmxdev.h>
+#include <dvb_demux.h>
+#include <dvbdev.h>
+#include <dvb_frontend.h>
+
+#include "firedtv.h"
+
+static int alloc_channel(struct firedtv *fdtv)
+{
+        int i;
+
+        for (i = 0; i < 16; i++)
+                if (!__test_and_set_bit(i, &fdtv->channel_active))
+                        break;
+        return i;
+}
+
+static void collect_channels(struct firedtv *fdtv, int *pidc, u16 pid[])
+{
+        int i, n;
+
+        for (i = 0, n = 0; i < 16; i++)
+                if (test_bit(i, &fdtv->channel_active))
+                        pid[n++] = fdtv->channel_pid[i];
+        *pidc = n;
+}
+
+static inline void dealloc_channel(struct firedtv *fdtv, int i)
+{
+        __clear_bit(i, &fdtv->channel_active);
+}
+
+int fdtv_start_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+        struct firedtv *fdtv = dvbdmxfeed->demux->priv;
+        int pidc, c, ret;
+        u16 pids[16];
+
+        switch (dvbdmxfeed->type) {
+        case DMX_TYPE_TS:
+        case DMX_TYPE_SEC:
+                break;
+        default:
+                dev_err(fdtv->device, "can't start dmx feed: invalid type %u\n",
+                        dvbdmxfeed->type);
+                return -EINVAL;
+        }
+
+        if (mutex_lock_interruptible(&fdtv->demux_mutex))
+                return -EINTR;
+
+        if (dvbdmxfeed->type == DMX_TYPE_TS) {
+                switch (dvbdmxfeed->pes_type) {
+                case DMX_TS_PES_VIDEO:
+                case DMX_TS_PES_AUDIO:
+                case DMX_TS_PES_TELETEXT:
+                case DMX_TS_PES_PCR:
+                case DMX_TS_PES_OTHER:
+                        c = alloc_channel(fdtv);
+                        break;
+                default:
+                        dev_err(fdtv->device,
+                                "can't start dmx feed: invalid pes type %u\n",
+                                dvbdmxfeed->pes_type);
+                        ret = -EINVAL;
+                        goto out;
+                }
+        } else {
+                c = alloc_channel(fdtv);
+        }
+
+        if (c > 15) {
+                dev_err(fdtv->device, "can't start dmx feed: busy\n");
+                ret = -EBUSY;
+                goto out;
+        }
+
+        dvbdmxfeed->priv = (typeof(dvbdmxfeed->priv))(unsigned long)c;
+        fdtv->channel_pid[c] = dvbdmxfeed->pid;
+        collect_channels(fdtv, &pidc, pids);
+
+        if (dvbdmxfeed->pid == 8192) {
+                ret = avc_tuner_get_ts(fdtv);
+                if (ret) {
+                        dealloc_channel(fdtv, c);
+                        dev_err(fdtv->device, "can't get TS\n");
+                        goto out;
+                }
+        } else {
+                ret = avc_tuner_set_pids(fdtv, pidc, pids);
+                if (ret) {
+                        dealloc_channel(fdtv, c);
+                        dev_err(fdtv->device, "can't set PIDs\n");
+                        goto out;
+                }
+        }
+out:
+        mutex_unlock(&fdtv->demux_mutex);
+
+        return ret;
+}
+
+int fdtv_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+        struct dvb_demux *demux = dvbdmxfeed->demux;
+        struct firedtv *fdtv = demux->priv;
+        int pidc, c, ret;
+        u16 pids[16];
+
+        if (dvbdmxfeed->type == DMX_TYPE_TS &&
+            !((dvbdmxfeed->ts_type & TS_PACKET) &&
+              (demux->dmx.frontend->source != DMX_MEMORY_FE))) {
+
+                if (dvbdmxfeed->ts_type & TS_DECODER) {
+                        if (dvbdmxfeed->pes_type >= DMX_TS_PES_OTHER ||
+                            !demux->pesfilter[dvbdmxfeed->pes_type])
+                                return -EINVAL;
+
+                        demux->pids[dvbdmxfeed->pes_type] |= 0x8000;
+                        demux->pesfilter[dvbdmxfeed->pes_type] = NULL;
+                }
+
+                if (!(dvbdmxfeed->ts_type & TS_DECODER &&
+                      dvbdmxfeed->pes_type < DMX_TS_PES_OTHER))
+                        return 0;
+        }
+
+        if (mutex_lock_interruptible(&fdtv->demux_mutex))
+                return -EINTR;
+
+        c = (unsigned long)dvbdmxfeed->priv;
+        dealloc_channel(fdtv, c);
+        collect_channels(fdtv, &pidc, pids);
+
+        ret = avc_tuner_set_pids(fdtv, pidc, pids);
+
+        mutex_unlock(&fdtv->demux_mutex);
+
+        return ret;
+}
+
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+int fdtv_dvb_register(struct firedtv *fdtv, const char *name)
+{
+        int err;
+
+        err = dvb_register_adapter(&fdtv->adapter, name,
+                                   THIS_MODULE, fdtv->device, adapter_nr);
+        if (err < 0)
+                goto fail_log;
+
+        /*DMX_TS_FILTERING | DMX_SECTION_FILTERING*/
+        fdtv->demux.dmx.capabilities = 0;
+
+        fdtv->demux.priv        = fdtv;
+        fdtv->demux.filternum   = 16;
+        fdtv->demux.feednum     = 16;
+        fdtv->demux.start_feed  = fdtv_start_feed;
+        fdtv->demux.stop_feed   = fdtv_stop_feed;
+        fdtv->demux.write_to_decoder = NULL;
+
+        err = dvb_dmx_init(&fdtv->demux);
+        if (err)
+                goto fail_unreg_adapter;
+
+        fdtv->dmxdev.filternum    = 16;
+        fdtv->dmxdev.demux        = &fdtv->demux.dmx;
+        fdtv->dmxdev.capabilities = 0;
+
+        err = dvb_dmxdev_init(&fdtv->dmxdev, &fdtv->adapter);
+        if (err)
+                goto fail_dmx_release;
+
+        fdtv->frontend.source = DMX_FRONTEND_0;
+
+        err = fdtv->demux.dmx.add_frontend(&fdtv->demux.dmx, &fdtv->frontend);
+        if (err)
+                goto fail_dmxdev_release;
+
+        err = fdtv->demux.dmx.connect_frontend(&fdtv->demux.dmx,
+                                               &fdtv->frontend);
+        if (err)
+                goto fail_rem_frontend;
+
+        err = dvb_net_init(&fdtv->adapter, &fdtv->dvbnet, &fdtv->demux.dmx);
+        if (err)
+                goto fail_disconnect_frontend;
+
+        fdtv_frontend_init(fdtv, name);
+        err = dvb_register_frontend(&fdtv->adapter, &fdtv->fe);
+        if (err)
+                goto fail_net_release;
+
+        err = fdtv_ca_register(fdtv);
+        if (err)
+                dev_info(fdtv->device,
+                         "Conditional Access Module not enabled\n");
+        return 0;
+
+fail_net_release:
+        dvb_net_release(&fdtv->dvbnet);
+fail_disconnect_frontend:
+        fdtv->demux.dmx.close(&fdtv->demux.dmx);
+fail_rem_frontend:
+        fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend);
+fail_dmxdev_release:
+        dvb_dmxdev_release(&fdtv->dmxdev);
+fail_dmx_release:
+        dvb_dmx_release(&fdtv->demux);
+fail_unreg_adapter:
+        dvb_unregister_adapter(&fdtv->adapter);
+fail_log:
+        dev_err(fdtv->device, "DVB initialization failed\n");
+        return err;
+}
+
+void fdtv_dvb_unregister(struct firedtv *fdtv)
+{
+        fdtv_ca_release(fdtv);
+        dvb_unregister_frontend(&fdtv->fe);
+        dvb_net_release(&fdtv->dvbnet);
+        fdtv->demux.dmx.close(&fdtv->demux.dmx);
+        fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend);
+        dvb_dmxdev_release(&fdtv->dmxdev);
+        dvb_dmx_release(&fdtv->demux);
+        dvb_unregister_adapter(&fdtv->adapter);
+}