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authorAntti Palosaari <crope@iki.fi>2012-08-15 05:21:06 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-08-16 02:18:43 +0400
commit06bae1227aadf51d047f7a75834ed446e56ebae2 (patch)
tree0f8900b4515c07fbadab099c45fbe8342cab3fd2 /drivers/media/dvb-core
parent0898b95409489abd7219f5f7ca675c84656fb94f (diff)
downloadlinux-06bae1227aadf51d047f7a75834ed446e56ebae2.tar.xz
[media] dvb_frontend: implement suspend / resume
Move initial suspend / resume support from dvb_usb_v2 to dvb_frontend as it is dvb general feature that could be used all dvb devices. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb-core')
-rw-r--r--drivers/media/dvb-core/dvb_frontend.c47
-rw-r--r--drivers/media/dvb-core/dvb_frontend.h3
2 files changed, 40 insertions, 10 deletions
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index 5fb19eae5a82..aa4d4d85dc20 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -307,15 +307,6 @@ void dvb_frontend_reinitialise(struct dvb_frontend *fe)
}
EXPORT_SYMBOL(dvb_frontend_reinitialise);
-void dvb_frontend_retune(struct dvb_frontend *fe)
-{
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
-
- fepriv->state = FESTATE_RETUNE;
- dvb_frontend_wakeup(fe);
-}
-EXPORT_SYMBOL(dvb_frontend_retune);
-
static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
{
int q2;
@@ -2448,6 +2439,44 @@ static const struct file_operations dvb_frontend_fops = {
.llseek = noop_llseek,
};
+int dvb_frontend_suspend(struct dvb_frontend *fe)
+{
+ int ret = 0;
+
+ dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
+ fe->id);
+
+ if (fe->ops.tuner_ops.sleep)
+ ret = fe->ops.tuner_ops.sleep(fe);
+
+ if (fe->ops.sleep)
+ ret = fe->ops.sleep(fe);
+
+ return ret;
+}
+EXPORT_SYMBOL(dvb_frontend_suspend);
+
+int dvb_frontend_resume(struct dvb_frontend *fe)
+{
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
+ int ret = 0;
+
+ dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
+ fe->id);
+
+ if (fe->ops.init)
+ ret = fe->ops.init(fe);
+
+ if (fe->ops.tuner_ops.init)
+ ret = fe->ops.tuner_ops.init(fe);
+
+ fepriv->state = FESTATE_RETUNE;
+ dvb_frontend_wakeup(fe);
+
+ return ret;
+}
+EXPORT_SYMBOL(dvb_frontend_resume);
+
int dvb_register_frontend(struct dvb_adapter* dvb,
struct dvb_frontend* fe)
{
diff --git a/drivers/media/dvb-core/dvb_frontend.h b/drivers/media/dvb-core/dvb_frontend.h
index 58f6b4c16b40..db309db79bd6 100644
--- a/drivers/media/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb-core/dvb_frontend.h
@@ -418,7 +418,8 @@ extern int dvb_unregister_frontend(struct dvb_frontend *fe);
extern void dvb_frontend_detach(struct dvb_frontend *fe);
extern void dvb_frontend_reinitialise(struct dvb_frontend *fe);
-extern void dvb_frontend_retune(struct dvb_frontend *fe);
+extern int dvb_frontend_suspend(struct dvb_frontend *fe);
+extern int dvb_frontend_resume(struct dvb_frontend *fe);
extern void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec);
extern s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime);