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[media] dvb_frontend: add props argument to dtv_get_frontend()

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Instead of implicitly using the DTV cache properties at
dtv_get_frontend(), pass it as an additional argument.

This patch prepares to use a separate cache for G_PROPERTY,
in order to avoid it to mangle with the DVB thread
zigzag logic.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-02-04 09:45:14 -02:00
parent 210bd104c6
commit 2ea9a08d59
1 changed files with 18 additions and 12 deletions
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30
drivers/media/dvb-core/dvb_frontend.c
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@ -140,9 +140,12 @@ struct dvb_frontend_private {
static void dvb_frontend_wakeup(struct dvb_frontend *fe);
static int dtv_get_frontend(struct dvb_frontend *fe,
struct dtv_frontend_properties *c,
struct dvb_frontend_parameters *p_out);
static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
struct dvb_frontend_parameters *p);
static int
dtv_property_legacy_params_sync(struct dvb_frontend *fe,
const struct dtv_frontend_properties *c,
struct dvb_frontend_parameters *p);
static bool has_get_frontend(struct dvb_frontend *fe)
{
@ -202,6 +205,7 @@ static void dvb_frontend_add_event(struct dvb_frontend *fe,
enum fe_status status)
{
struct dvb_frontend_private *fepriv = fe->frontend_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct dvb_fe_events *events = &fepriv->events;
struct dvb_frontend_event *e;
int wp;
@ -209,7 +213,7 @@ static void dvb_frontend_add_event(struct dvb_frontend *fe,
dev_dbg(fe->dvb->device, "%s:\n", __func__);
if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
dtv_get_frontend(fe, &fepriv->parameters_out);
dtv_get_frontend(fe, c, &fepriv->parameters_out);
mutex_lock(&events->mtx);
@ -687,6 +691,7 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe)
static int dvb_frontend_thread(void *data)
{
struct dvb_frontend *fe = data;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
enum fe_status s;
enum dvbfe_algo algo;
@ -807,7 +812,7 @@ static int dvb_frontend_thread(void *data)
fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
fepriv->delay = HZ / 2;
}
dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
dtv_property_legacy_params_sync(fe, c, &fepriv->parameters_out);
fe->ops.read_status(fe, &s);
if (s != fepriv->status) {
dvb_frontend_add_event(fe, s); /* update event list */
@ -1274,11 +1279,11 @@ static int dtv_property_cache_sync(struct dvb_frontend *fe,
/* Ensure the cached values are set correctly in the frontend
* legacy tuning structures, for the advanced tuning API.
*/
static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
struct dvb_frontend_parameters *p)
static int
dtv_property_legacy_params_sync(struct dvb_frontend *fe,
const struct dtv_frontend_properties *c,
struct dvb_frontend_parameters *p)
{
const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
p->frequency = c->frequency;
p->inversion = c->inversion;
@ -1350,6 +1355,7 @@ static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
* If p_out is not null, it will update the DVBv3 params pointed by it.
*/
static int dtv_get_frontend(struct dvb_frontend *fe,
struct dtv_frontend_properties *c,
struct dvb_frontend_parameters *p_out)
{
int r;
@ -1359,7 +1365,7 @@ static int dtv_get_frontend(struct dvb_frontend *fe,
if (unlikely(r < 0))
return r;
if (p_out)
dtv_property_legacy_params_sync(fe, p_out);
dtv_property_legacy_params_sync(fe, c, p_out);
return 0;
}
@ -2107,7 +2113,7 @@ static int dvb_frontend_ioctl_properties(struct file *file,
* is not idle. Otherwise, returns the cached content
*/
if (fepriv->state != FESTATE_IDLE) {
err = dtv_get_frontend(fe, NULL);
err = dtv_get_frontend(fe, c, NULL);
if (err < 0)
goto out;
}
@ -2147,7 +2153,7 @@ static int dtv_set_frontend(struct dvb_frontend *fe)
* the user. FE_SET_FRONTEND triggers an initial frontend event
* with status = 0, which copies output parameters to userspace.
*/
dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
dtv_property_legacy_params_sync(fe, c, &fepriv->parameters_out);
/*
* Be sure that the bandwidth will be filled for all
@ -2518,7 +2524,7 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
break;
case FE_GET_FRONTEND:
err = dtv_get_frontend(fe, parg);
err = dtv_get_frontend(fe, c, parg);
break;
case FE_SET_FRONTEND_TUNE_MODE: