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-rw-r--r--linux/drivers/media/dvb/dvb-core/dvb_frontend.c67
-rw-r--r--linux/drivers/media/dvb/dvb-core/dvb_frontend.h1
-rw-r--r--linux/drivers/media/dvb/dvb-core/dvbdev.c3
-rw-r--r--linux/drivers/media/dvb/dvb-core/dvbdev.h4
4 files changed, 63 insertions, 12 deletions
diff --git a/linux/drivers/media/dvb/dvb-core/dvb_frontend.c b/linux/drivers/media/dvb/dvb-core/dvb_frontend.c
index c07c14ba0..51fb82edc 100644
--- a/linux/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/linux/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -52,6 +52,7 @@ static int dvb_shutdown_timeout;
static int dvb_force_auto_inversion;
static int dvb_override_tune_delay;
static int dvb_powerdown_on_sleep = 1;
+static int dvb_mfe_wait_time = 5;
module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
@@ -63,6 +64,8 @@ module_param(dvb_override_tune_delay, int, 0644);
MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
module_param(dvb_powerdown_on_sleep, int, 0644);
MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
+module_param(dvb_mfe_wait_time, int, 0644);
+MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open() for multi-frontend to become available (default:5 seconds)");
#define dprintk if (dvb_frontend_debug) printk
@@ -217,8 +220,9 @@ static int dvb_frontend_get_event(struct dvb_frontend *fe,
static void dvb_frontend_init(struct dvb_frontend *fe)
{
- dprintk ("DVB: initialising frontend %i (%s)...\n",
+ dprintk ("DVB: initialising adapter %i frontend %i (%s)...\n",
fe->dvb->num,
+ fe->id,
fe->ops.info.name);
if (fe->ops.init)
@@ -697,7 +701,7 @@ static int dvb_frontend_start(struct dvb_frontend *fe)
mb();
fe_thread = kthread_run(dvb_frontend_thread, fe,
- "kdvb-fe-%i", fe->dvb->num);
+ "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
if (IS_ERR(fe_thread)) {
ret = PTR_ERR(fe_thread);
printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
@@ -721,8 +725,8 @@ static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe,
*freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
if (*freq_min == 0 || *freq_max == 0)
- printk(KERN_WARNING "DVB: frontend %u frequency limits undefined - fix the driver\n",
- fe->dvb->num);
+ printk(KERN_WARNING "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
+ fe->dvb->num,fe->id);
}
static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
@@ -735,8 +739,8 @@ static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max);
if ((freq_min && parms->frequency < freq_min) ||
(freq_max && parms->frequency > freq_max)) {
- printk(KERN_WARNING "DVB: frontend %u frequency %u out of range (%u..%u)\n",
- fe->dvb->num, parms->frequency, freq_min, freq_max);
+ printk(KERN_WARNING "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
+ fe->dvb->num, fe->id, parms->frequency, freq_min, freq_max);
return -EINVAL;
}
@@ -746,8 +750,8 @@ static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
(fe->ops.info.symbol_rate_max &&
parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
- printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n",
- fe->dvb->num, parms->u.qpsk.symbol_rate,
+ printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
+ fe->dvb->num, fe->id, parms->u.qpsk.symbol_rate,
fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
return -EINVAL;
}
@@ -757,8 +761,8 @@ static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
(fe->ops.info.symbol_rate_max &&
parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
- printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n",
- fe->dvb->num, parms->u.qam.symbol_rate,
+ printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
+ fe->dvb->num, fe->id, parms->u.qam.symbol_rate,
fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
return -EINVAL;
}
@@ -1820,13 +1824,46 @@ static int dvb_frontend_open(struct inode *inode, struct file *file)
struct dvb_device *dvbdev = file->private_data;
struct dvb_frontend *fe = dvbdev->priv;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
+ struct dvb_adapter *adapter = fe->dvb;
+ struct dvb_device *mfedev;
+ struct dvb_frontend *mfe;
+ struct dvb_frontend_private *mfepriv;
+ int mferetry;
int ret;
dprintk ("%s\n", __func__);
+ if (adapter->mfe_shared) {
+ mutex_lock (&adapter->mfe_lock);
+ if (adapter->mfe_dvbdev != dvbdev) {
+ if (adapter->mfe_dvbdev) {
+ mfedev = adapter->mfe_dvbdev;
+ mfe = mfedev->priv;
+ mfepriv = mfe->frontend_priv;
+ mutex_unlock (&adapter->mfe_lock);
+ mferetry = (dvb_mfe_wait_time << 1);
+ while (mferetry-- && (mfedev->users != -1 || mfepriv->thread != NULL)) {
+ if(msleep_interruptible(500)) {
+ if(signal_pending(current))
+ return -EINTR;
+ }
+ }
+ mutex_lock (&adapter->mfe_lock);
+ mfedev = adapter->mfe_dvbdev;
+ mfe = mfedev->priv;
+ mfepriv = mfe->frontend_priv;
+ if (mfedev->users != -1 || mfepriv->thread != NULL) {
+ ret = -EBUSY;
+ goto err0;
+ }
+ }
+ adapter->mfe_dvbdev = dvbdev;
+ }
+ }
+
if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
- return ret;
+ goto err0;
}
if ((ret = dvb_generic_open (inode, file)) < 0)
@@ -1846,6 +1883,8 @@ static int dvb_frontend_open(struct inode *inode, struct file *file)
fepriv->events.eventr = fepriv->events.eventw = 0;
}
+ if (adapter->mfe_shared)
+ mutex_unlock (&adapter->mfe_lock);
return ret;
err2:
@@ -1853,6 +1892,9 @@ err2:
err1:
if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
fe->ops.ts_bus_ctrl(fe, 0);
+err0:
+ if (adapter->mfe_shared)
+ mutex_unlock (&adapter->mfe_lock);
return ret;
}
@@ -1922,8 +1964,9 @@ int dvb_register_frontend(struct dvb_adapter* dvb,
fe->dvb = dvb;
fepriv->inversion = INVERSION_OFF;
- printk ("DVB: registering frontend %i (%s)...\n",
+ printk ("DVB: registering adapter %i frontend %i (%s)...\n",
fe->dvb->num,
+ fe->id,
fe->ops.info.name);
dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
diff --git a/linux/drivers/media/dvb/dvb-core/dvb_frontend.h b/linux/drivers/media/dvb/dvb-core/dvb_frontend.h
index a0c591b3b..569b72a96 100644
--- a/linux/drivers/media/dvb/dvb-core/dvb_frontend.h
+++ b/linux/drivers/media/dvb/dvb-core/dvb_frontend.h
@@ -236,6 +236,7 @@ struct dvb_frontend {
struct dtv_frontend_properties dtv_property_cache;
#define DVB_FRONTEND_COMPONENT_TUNER 0
int (*callback)(void *adapter_priv, int component, int cmd, int arg);
+ int id;
};
extern int dvb_register_frontend(struct dvb_adapter *dvb,
diff --git a/linux/drivers/media/dvb/dvb-core/dvbdev.c b/linux/drivers/media/dvb/dvb-core/dvbdev.c
index 0820da504..422af5a0d 100644
--- a/linux/drivers/media/dvb/dvb-core/dvbdev.c
+++ b/linux/drivers/media/dvb/dvb-core/dvbdev.c
@@ -341,6 +341,9 @@ int dvb_register_adapter(struct dvb_adapter *adap, const char *name,
adap->name = name;
adap->module = module;
adap->device = device;
+ adap->mfe_shared = 0;
+ adap->mfe_dvbdev = NULL;
+ mutex_init (&adap->mfe_lock);
list_add_tail (&adap->list_head, &dvb_adapter_list);
diff --git a/linux/drivers/media/dvb/dvb-core/dvbdev.h b/linux/drivers/media/dvb/dvb-core/dvbdev.h
index 89d12dc47..574e336ba 100644
--- a/linux/drivers/media/dvb/dvb-core/dvbdev.h
+++ b/linux/drivers/media/dvb/dvb-core/dvbdev.h
@@ -62,6 +62,10 @@ struct dvb_adapter {
struct device *device;
struct module *module;
+
+ int mfe_shared; /* indicates mutually exclusive frontends */
+ struct dvb_device *mfe_dvbdev; /* frontend device in use */
+ struct mutex mfe_lock; /* access lock for thread creation */
};
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-09 18:08:34 +0000