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| author | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-08-09 15:23:35 -0300 |
|---|---|---|
| committer | Chanho Park <chanho61.park@samsung.com> | 2014-11-18 12:00:28 +0900 |
| commit | 02bdb8c8e94ee0724e4cf33ca6d12c6441c26612 (patch) | |
| tree | 2be841fc1f149534313f686776cc01cb2e7b4e03 /drivers/media | |
| parent | 8a9a7efabde1c2a190eadea446a58bcea7f33c20 (diff) | |
| download | linux-3.10-02bdb8c8e94ee0724e4cf33ca6d12c6441c26612.tar.gz linux-3.10-02bdb8c8e94ee0724e4cf33ca6d12c6441c26612.tar.bz2 linux-3.10-02bdb8c8e94ee0724e4cf33ca6d12c6441c26612.zip | |
[media] dvb-frontend: add core support for tuner suspend/resume
While several tuners have some sort of suspend/resume
implementation, this is currently mangled with an optional
.sleep callback that it is also used to put the device on
low power mode.
Not all drivers implement it, as returning the driver from
low power may require to re-load the firmware, with takes
some time. Also, some drivers may delay it.
So, the more coherent is to add two new optional callbacks
that will let the tuners to directy implement suspend and
resume callbacks if they need.
Change-Id: I0cf3b2cb2879cf538a86fa88a4ce210dd6dd3225
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb-core/dvb_frontend.c | 8 | ||||
| -rw-r--r-- | drivers/media/dvb-core/dvb_frontend.h | 2 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/tuner-core.c | 8 |
3 files changed, 14 insertions, 4 deletions
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index 6cc2631d8f0..67120196d03 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -2554,7 +2554,9 @@ int dvb_frontend_suspend(struct dvb_frontend *fe) dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num, fe->id); - if (fe->ops.tuner_ops.sleep) + if (fe->ops.tuner_ops.suspend) + ret = fe->ops.tuner_ops.suspend(fe); + else if (fe->ops.tuner_ops.sleep) ret = fe->ops.tuner_ops.sleep(fe); if (fe->ops.sleep) @@ -2575,7 +2577,9 @@ int dvb_frontend_resume(struct dvb_frontend *fe) if (fe->ops.init) ret = fe->ops.init(fe); - if (fe->ops.tuner_ops.init) + if (fe->ops.tuner_ops.resume) + ret = fe->ops.tuner_ops.resume(fe); + else if (fe->ops.tuner_ops.init) ret = fe->ops.tuner_ops.init(fe); fepriv->state = FESTATE_RETUNE; diff --git a/drivers/media/dvb-core/dvb_frontend.h b/drivers/media/dvb-core/dvb_frontend.h index 371b6caf486..ab6cfbd3611 100644 --- a/drivers/media/dvb-core/dvb_frontend.h +++ b/drivers/media/dvb-core/dvb_frontend.h @@ -201,6 +201,8 @@ struct dvb_tuner_ops { int (*release)(struct dvb_frontend *fe); int (*init)(struct dvb_frontend *fe); int (*sleep)(struct dvb_frontend *fe); + int (*suspend)(struct dvb_frontend *fe); + int (*resume)(struct dvb_frontend *fe); /** This is for simple PLLs - set all parameters in one go. */ int (*set_params)(struct dvb_frontend *fe); diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c index 06c18ba16fa..17702320073 100644 --- a/drivers/media/v4l2-core/tuner-core.c +++ b/drivers/media/v4l2-core/tuner-core.c @@ -1260,7 +1260,9 @@ static int tuner_suspend(struct device *dev) tuner_dbg("suspend\n"); - if (!t->standby && analog_ops->standby) + if (t->fe.ops.tuner_ops.suspend) + t->fe.ops.tuner_ops.suspend(&t->fe); + else if (!t->standby && analog_ops->standby) analog_ops->standby(&t->fe); return 0; @@ -1273,7 +1275,9 @@ static int tuner_resume(struct device *dev) tuner_dbg("resume\n"); - if (!t->standby) + if (t->fe.ops.tuner_ops.resume) + t->fe.ops.tuner_ops.resume(&t->fe); + else if (!t->standby) if (set_mode(t, t->mode) == 0) set_freq(t, 0); |