#include <linux/kthread.h>
#include <linux/freezer.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
#include "dvbdev.h"
+#include "pvrusb2-debug.h"
#include "pvrusb2-hdw-internal.h"
#include "pvrusb2-hdw.h"
#include "pvrusb2-io.h"
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
-#define BUFFER_COUNT 32
-#define BUFFER_SIZE PAGE_ALIGN(0x4000)
-
-struct pvr2_dvb_fh {
- struct pvr2_channel channel;
- struct pvr2_stream *stream;
- struct pvr2_dvb_adapter *adap;
- wait_queue_head_t wait_data;
- char *buffer_storage[BUFFER_COUNT];
-};
-
-static void pvr2_dvb_notify(struct pvr2_dvb_fh *fhp)
-{
- wake_up(&fhp->wait_data);
-}
-
-static int pvr2_dvb_fh_init(struct pvr2_dvb_fh *fh,
- struct pvr2_dvb_adapter *adap)
-{
- struct pvr2_context *pvr = adap->pvr;
- unsigned int idx;
- int ret;
- struct pvr2_buffer *bp;
-
- init_waitqueue_head(&fh->wait_data);
-
- fh->adap = adap;
-
- pvr2_channel_init(&fh->channel, adap->pvr);
-
- ret = pvr2_channel_claim_stream(&fh->channel, &pvr->video_stream);
- /* somebody else already has the stream */
- if (ret != 0)
- return ret;
-
- fh->stream = pvr->video_stream.stream;
-
- for (idx = 0; idx < BUFFER_COUNT; idx++) {
- fh->buffer_storage[idx] = kmalloc(BUFFER_SIZE, GFP_KERNEL);
- if (!(fh->buffer_storage[idx]))
- break;
- }
-
- if (idx < BUFFER_COUNT) {
- /* An allocation appears to have failed */
- ret = -ENOMEM;
- goto cleanup;
- }
-
- pvr2_stream_set_callback(pvr->video_stream.stream,
- (pvr2_stream_callback) pvr2_dvb_notify, fh);
-
- ret = pvr2_stream_set_buffer_count(fh->stream, BUFFER_COUNT);
- if (ret < 0)
- return ret;
-
- for (idx = 0; idx < BUFFER_COUNT; idx++) {
- bp = pvr2_stream_get_buffer(fh->stream, idx);
- pvr2_buffer_set_buffer(bp,
- fh->buffer_storage[idx],
- BUFFER_SIZE);
- }
-
- ret = pvr2_hdw_set_streaming(fh->channel.hdw, 1);
- if (ret < 0)
- goto cleanup;
-
- while ((bp = pvr2_stream_get_idle_buffer(fh->stream)) != 0) {
- ret = pvr2_buffer_queue(bp);
- if (ret < 0)
- goto cleanup;
- }
-
- return ret;
-
-cleanup:
- if (fh->stream)
- pvr2_stream_kill(fh->stream);
-
- for (idx = 0; idx < BUFFER_COUNT; idx++) {
- if (!(fh->buffer_storage[idx]))
- continue;
-
- kfree(fh->buffer_storage[idx]);
- }
- pvr2_channel_done(&fh->channel);
-
- return ret;
-}
-
-static void pvr2_dvb_fh_done(struct pvr2_dvb_fh *fh)
-{
- unsigned int idx;
-
- pvr2_hdw_set_streaming(fh->channel.hdw, 0);
-
- pvr2_stream_kill(fh->stream);
-
-// pvr2_channel_claim_stream(&fh->channel, NULL);
-
- for (idx = 0; idx < BUFFER_COUNT; idx++) {
- if (!(fh->buffer_storage[idx]))
- continue;
-
- kfree(fh->buffer_storage[idx]);
- }
-
- pvr2_channel_done(&fh->channel);
-}
-
static int pvr2_dvb_feed_func(struct pvr2_dvb_adapter *adap)
{
- struct pvr2_dvb_fh fh;
int ret;
unsigned int count;
struct pvr2_buffer *bp;
+ struct pvr2_stream *stream;
- printk(KERN_DEBUG "dvb thread started\n");
+ pvr2_trace(PVR2_TRACE_DVB_FEED, "dvb feed thread started");
set_freezable();
- memset(&fh, 0, sizeof(fh));
-
- ret = pvr2_dvb_fh_init(&fh, adap);
- if (ret != 0)
- return ret;
+ stream = adap->channel.stream->stream;
for (;;) {
- if ((0 == adap->feedcount) || (kthread_should_stop()))
- break;
+ if (kthread_should_stop()) break;
/* Not sure about this... */
try_to_freeze();
- bp = pvr2_stream_get_ready_buffer(fh.stream);
+ bp = pvr2_stream_get_ready_buffer(stream);
if (bp != NULL) {
count = pvr2_buffer_get_count(bp);
if (count) {
dvb_dmx_swfilter(
&adap->demux,
- fh.buffer_storage[
- pvr2_buffer_get_id(bp)],
+ adap->buffer_storage[
+ pvr2_buffer_get_id(bp)],
count);
} else {
ret = pvr2_buffer_get_status(bp);
- if (ret < 0)
- break;
+ if (ret < 0) break;
}
ret = pvr2_buffer_queue(bp);
- if (ret < 0)
- break;
+ if (ret < 0) break;
/* Since we know we did something to a buffer,
just go back and try again. No point in
}
- /* Wait until more buffers become available. */
+ /* Wait until more buffers become available or we're
+ told not to wait any longer. */
ret = wait_event_interruptible(
- fh.wait_data,
- pvr2_stream_get_ready_count(fh.stream) > 0);
- if (ret < 0)
- break;
+ adap->buffer_wait_data,
+ (pvr2_stream_get_ready_count(stream) > 0) ||
+ kthread_should_stop());
+ if (ret < 0) break;
}
- pvr2_dvb_fh_done(&fh);
-
/* If we get here and ret is < 0, then an error has occurred.
Probably would be a good idea to communicate that to DVB core... */
- printk(KERN_DEBUG "dvb thread stopped\n");
+ pvr2_trace(PVR2_TRACE_DVB_FEED, "dvb feed thread stopped");
return 0;
}
return stat;
}
-static int pvr2_dvb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
+static void pvr2_dvb_notify(struct pvr2_dvb_adapter *adap)
{
- struct pvr2_dvb_adapter *adap = dvbdmxfeed->demux->priv;
- int newfeedcount, ret = 0;
+ wake_up(&adap->buffer_wait_data);
+}
- if (adap == NULL)
- return -ENODEV;
+static void pvr2_dvb_stream_end(struct pvr2_dvb_adapter *adap)
+{
+ unsigned int idx;
+ struct pvr2_stream *stream;
- mutex_lock(&adap->lock);
- newfeedcount = adap->feedcount + (onoff ? 1 : -1);
+ if (adap->thread) {
+ kthread_stop(adap->thread);
+ adap->thread = NULL;
+ }
+
+ if (adap->channel.stream) {
+ stream = adap->channel.stream->stream;
+ } else {
+ stream = NULL;
+ }
+ if (stream) {
+ pvr2_hdw_set_streaming(adap->channel.hdw, 0);
+ pvr2_stream_set_callback(stream, NULL, NULL);
+ pvr2_stream_kill(stream);
+ pvr2_stream_set_buffer_count(stream, 0);
+ pvr2_channel_claim_stream(&adap->channel, NULL);
+ }
+
+ if (adap->stream_run) {
+ for (idx = 0; idx < PVR2_DVB_BUFFER_COUNT; idx++) {
+ if (!(adap->buffer_storage[idx])) continue;
+ kfree(adap->buffer_storage[idx]);
+ adap->buffer_storage[idx] = NULL;
+ }
+ adap->stream_run = 0;
+ }
+}
+
+static int pvr2_dvb_stream_do_start(struct pvr2_dvb_adapter *adap)
+{
+ struct pvr2_context *pvr = adap->channel.mc_head;
+ unsigned int idx;
+ int ret;
+ struct pvr2_buffer *bp;
+ struct pvr2_stream *stream = NULL;
+
+ if (adap->stream_run) return -EIO;
+
+ ret = pvr2_channel_claim_stream(&adap->channel, &pvr->video_stream);
+ /* somebody else already has the stream */
+ if (ret < 0) return ret;
+
+ stream = adap->channel.stream->stream;
+
+ for (idx = 0; idx < PVR2_DVB_BUFFER_COUNT; idx++) {
+ adap->buffer_storage[idx] = kmalloc(PVR2_DVB_BUFFER_SIZE,
+ GFP_KERNEL);
+ if (!(adap->buffer_storage[idx])) return -ENOMEM;
+ }
+
+ pvr2_stream_set_callback(pvr->video_stream.stream,
+ (pvr2_stream_callback) pvr2_dvb_notify, adap);
+
+ ret = pvr2_stream_set_buffer_count(stream, PVR2_DVB_BUFFER_COUNT);
+ if (ret < 0) return ret;
+
+ for (idx = 0; idx < PVR2_DVB_BUFFER_COUNT; idx++) {
+ bp = pvr2_stream_get_buffer(stream, idx);
+ pvr2_buffer_set_buffer(bp,
+ adap->buffer_storage[idx],
+ PVR2_DVB_BUFFER_SIZE);
+ }
+
+ ret = pvr2_hdw_set_streaming(adap->channel.hdw, 1);
+ if (ret < 0) return ret;
+
+ while ((bp = pvr2_stream_get_idle_buffer(stream)) != NULL) {
+ ret = pvr2_buffer_queue(bp);
+ if (ret < 0) return ret;
+ }
- if (newfeedcount == 0) {
- printk(KERN_DEBUG "stop feeding\n");
+ adap->thread = kthread_run(pvr2_dvb_feed_thread, adap, "pvrusb2-dvb");
- ret = kthread_stop(adap->thread);
+ if (IS_ERR(adap->thread)) {
+ ret = PTR_ERR(adap->thread);
adap->thread = NULL;
+ return ret;
}
- adap->feedcount = newfeedcount;
+ adap->stream_run = !0;
+
+ return 0;
+}
+
+static int pvr2_dvb_stream_start(struct pvr2_dvb_adapter *adap)
+{
+ int ret = pvr2_dvb_stream_do_start(adap);
+ if (ret < 0) pvr2_dvb_stream_end(adap);
+ return ret;
+}
- if (adap->feedcount == onoff && adap->feedcount > 0) {
- if (NULL != adap->thread)
- goto fail;
+static int pvr2_dvb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
+{
+ struct pvr2_dvb_adapter *adap = dvbdmxfeed->demux->priv;
+ int ret = 0;
- printk(KERN_DEBUG "start feeding\n");
+ if (adap == NULL) return -ENODEV;
- adap->thread = kthread_run(pvr2_dvb_feed_thread,
- adap, "pvrusb2-dvb");
- if (IS_ERR(adap->thread)) {
- ret = PTR_ERR(adap->thread);
- adap->thread = NULL;
+ mutex_lock(&adap->lock);
+ do {
+ if (onoff) {
+ if (!adap->feedcount) {
+ pvr2_trace(PVR2_TRACE_DVB_FEED,
+ "start feeding demux");
+ ret = pvr2_dvb_stream_start(adap);
+ if (ret < 0) break;
+ }
+ (adap->feedcount)++;
+ } else if (adap->feedcount > 0) {
+ (adap->feedcount)--;
+ if (!adap->feedcount) {
+ pvr2_trace(PVR2_TRACE_DVB_FEED,
+ "stop feeding demux");
+ pvr2_dvb_stream_end(adap);
+ }
}
- //ret = newfeedcount;
- }
-fail:
+ } while (0);
mutex_unlock(&adap->lock);
return ret;
static int pvr2_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
- printk(KERN_DEBUG "start pid: 0x%04x, feedtype: %d\n",
- dvbdmxfeed->pid, dvbdmxfeed->type);
+ pvr2_trace(PVR2_TRACE_DVB_FEED, "start pid: 0x%04x", dvbdmxfeed->pid);
return pvr2_dvb_ctrl_feed(dvbdmxfeed, 1);
}
static int pvr2_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
- printk(KERN_DEBUG "stop pid: 0x%04x, feedtype: %d\n",
- dvbdmxfeed->pid, dvbdmxfeed->type);
+ pvr2_trace(PVR2_TRACE_DVB_FEED, "stop pid: 0x%04x", dvbdmxfeed->pid);
return pvr2_dvb_ctrl_feed(dvbdmxfeed, 0);
}
static int pvr2_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
{
- /* TO DO: This function will call into the core and request for
- * input to be set to 'dtv' if (acquire) and if it isn't set already.
- *
- * If (!acquire) then we should do nothing -- don't switch inputs
- * again unless the analog side of the driver requests the bus.
- */
- return 0;
+ struct pvr2_dvb_adapter *adap = fe->dvb->priv;
+ return pvr2_channel_limit_inputs(
+ &adap->channel,
+ (acquire ? (1 << PVR2_CVAL_INPUT_DTV) : 0));
}
static int pvr2_dvb_adapter_init(struct pvr2_dvb_adapter *adap)
ret = dvb_register_adapter(&adap->dvb_adap, "pvrusb2-dvb",
THIS_MODULE/*&hdw->usb_dev->owner*/,
- &adap->pvr->hdw->usb_dev->dev,
+ &adap->channel.hdw->usb_dev->dev,
adapter_nr);
if (ret < 0) {
- err("dvb_register_adapter failed: error %d", ret);
+ pvr2_trace(PVR2_TRACE_ERROR_LEGS,
+ "dvb_register_adapter failed: error %d", ret);
goto err;
}
adap->dvb_adap.priv = adap;
ret = dvb_dmx_init(&adap->demux);
if (ret < 0) {
- err("dvb_dmx_init failed: error %d", ret);
+ pvr2_trace(PVR2_TRACE_ERROR_LEGS,
+ "dvb_dmx_init failed: error %d", ret);
goto err_dmx;
}
ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap);
if (ret < 0) {
- err("dvb_dmxdev_init failed: error %d", ret);
+ pvr2_trace(PVR2_TRACE_ERROR_LEGS,
+ "dvb_dmxdev_init failed: error %d", ret);
goto err_dmx_dev;
}
dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);
- adap->digital_up = 1;
-
return 0;
err_dmx_dev:
static int pvr2_dvb_adapter_exit(struct pvr2_dvb_adapter *adap)
{
- if (adap->digital_up) {
- printk(KERN_DEBUG "unregistering DVB devices\n");
- dvb_net_release(&adap->dvb_net);
- adap->demux.dmx.close(&adap->demux.dmx);
- dvb_dmxdev_release(&adap->dmxdev);
- dvb_dmx_release(&adap->demux);
- dvb_unregister_adapter(&adap->dvb_adap);
- adap->digital_up = 0;
- }
+ pvr2_trace(PVR2_TRACE_INFO, "unregistering DVB devices");
+ dvb_net_release(&adap->dvb_net);
+ adap->demux.dmx.close(&adap->demux.dmx);
+ dvb_dmxdev_release(&adap->dmxdev);
+ dvb_dmx_release(&adap->demux);
+ dvb_unregister_adapter(&adap->dvb_adap);
return 0;
}
static int pvr2_dvb_frontend_init(struct pvr2_dvb_adapter *adap)
{
- struct pvr2_hdw *hdw = adap->pvr->hdw;
- struct pvr2_dvb_props *dvb_props = hdw->hdw_desc->dvb_props;
- int ret;
+ struct pvr2_hdw *hdw = adap->channel.hdw;
+ const struct pvr2_dvb_props *dvb_props = hdw->hdw_desc->dvb_props;
+ int ret = 0;
if (dvb_props == NULL) {
- err("fe_props not defined!");
+ pvr2_trace(PVR2_TRACE_ERROR_LEGS, "fe_props not defined!");
return -EINVAL;
}
- /* FIXME: This code should be moved into the core,
- * and should only be called if we don't already have
- * control of the bus.
- *
- * We can't call "pvr2_dvb_bus_ctrl(adap->fe, 1)" from here,
- * because adap->fe isn't defined yet.
- */
- ret = pvr2_ctrl_set_value(pvr2_hdw_get_ctrl_by_id(hdw,
- PVR2_CID_INPUT),
- PVR2_CVAL_INPUT_DTV);
- if (ret != 0)
+ ret = pvr2_channel_limit_inputs(
+ &adap->channel,
+ (1 << PVR2_CVAL_INPUT_DTV));
+ if (ret) {
+ pvr2_trace(PVR2_TRACE_ERROR_LEGS,
+ "failed to grab control of dtv input (code=%d)",
+ ret);
return ret;
-
- pvr2_hdw_commit_ctl(hdw);
-
+ }
if (dvb_props->frontend_attach == NULL) {
- err("frontend_attach not defined!");
- return -EINVAL;
+ pvr2_trace(PVR2_TRACE_ERROR_LEGS,
+ "frontend_attach not defined!");
+ ret = -EINVAL;
+ goto done;
}
if ((dvb_props->frontend_attach(adap) == 0) && (adap->fe)) {
if (dvb_register_frontend(&adap->dvb_adap, adap->fe)) {
- err("frontend registration failed!");
+ pvr2_trace(PVR2_TRACE_ERROR_LEGS,
+ "frontend registration failed!");
dvb_frontend_detach(adap->fe);
adap->fe = NULL;
- return -ENODEV;
+ ret = -ENODEV;
+ goto done;
}
if (dvb_props->tuner_attach)
adap->fe->ops.ts_bus_ctrl = pvr2_dvb_bus_ctrl;
} else {
- err("no frontend was attached!");
- return -ENODEV;
+ pvr2_trace(PVR2_TRACE_ERROR_LEGS,
+ "no frontend was attached!");
+ ret = -ENODEV;
+ return ret;
}
- return 0;
+ done:
+ pvr2_channel_limit_inputs(&adap->channel, 0);
+ return ret;
}
static int pvr2_dvb_frontend_exit(struct pvr2_dvb_adapter *adap)
return 0;
}
-int pvr2_dvb_init(struct pvr2_context *pvr)
+static void pvr2_dvb_destroy(struct pvr2_dvb_adapter *adap)
{
- int ret = 0;
-
- pvr->hdw->dvb.pvr = pvr;
- mutex_init(&pvr->hdw->dvb.lock);
-
- ret = pvr2_dvb_adapter_init(&pvr->hdw->dvb);
- if (ret < 0)
- goto fail;
-
- ret = pvr2_dvb_frontend_init(&pvr->hdw->dvb);
-fail:
- return ret;
+ pvr2_dvb_stream_end(adap);
+ pvr2_dvb_frontend_exit(adap);
+ pvr2_dvb_adapter_exit(adap);
+ pvr2_channel_done(&adap->channel);
+ kfree(adap);
}
-int pvr2_dvb_exit(struct pvr2_context *pvr)
+static void pvr2_dvb_internal_check(struct pvr2_channel *chp)
{
- pvr2_dvb_frontend_exit(&pvr->hdw->dvb);
- pvr2_dvb_adapter_exit(&pvr->hdw->dvb);
-
- pvr->hdw->dvb.pvr = NULL;
+ struct pvr2_dvb_adapter *adap;
+ adap = container_of(chp, struct pvr2_dvb_adapter, channel);
+ if (!adap->channel.mc_head->disconnect_flag) return;
+ pvr2_dvb_destroy(adap);
+}
- return 0;
+struct pvr2_dvb_adapter *pvr2_dvb_create(struct pvr2_context *pvr)
+{
+ int ret = 0;
+ struct pvr2_dvb_adapter *adap;
+ if (!pvr->hdw->hdw_desc->dvb_props) {
+ /* Device lacks a digital interface so don't set up
+ the DVB side of the driver either. For now. */
+ return NULL;
+ }
+ adap = kzalloc(sizeof(*adap), GFP_KERNEL);
+ if (!adap) return adap;
+ pvr2_channel_init(&adap->channel, pvr);
+ adap->channel.check_func = pvr2_dvb_internal_check;
+ init_waitqueue_head(&adap->buffer_wait_data);
+ mutex_init(&adap->lock);
+ ret = pvr2_dvb_adapter_init(adap);
+ if (ret < 0) goto fail1;
+ ret = pvr2_dvb_frontend_init(adap);
+ if (ret < 0) goto fail2;
+ return adap;
+
+fail2:
+ pvr2_dvb_adapter_exit(adap);
+fail1:
+ pvr2_channel_done(&adap->channel);
+ return NULL;
}
+
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff