diff options
Diffstat (limited to 'drivers/media/dvb/dvb-core/dvb_frontend.c')
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvb_frontend.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c index 4555baa383b..0f64d718265 100644 --- a/drivers/media/dvb/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c @@ -143,10 +143,12 @@ struct dvb_frontend_private { static void dvb_frontend_wakeup(struct dvb_frontend *fe); static int dtv_get_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *p_out); +static int dtv_property_legacy_params_sync(struct dvb_frontend *fe, + struct dvb_frontend_parameters *p); static bool has_get_frontend(struct dvb_frontend *fe) { - return fe->ops.get_frontend; + return fe->ops.get_frontend != NULL; } /* @@ -697,6 +699,7 @@ restart: fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN; fepriv->delay = HZ / 2; } + dtv_property_legacy_params_sync(fe, &fepriv->parameters_out); fe->ops.read_status(fe, &s); if (s != fepriv->status) { dvb_frontend_add_event(fe, s); /* update event list */ @@ -1443,6 +1446,28 @@ static int set_delivery_system(struct dvb_frontend *fe, u32 desired_system) __func__); return -EINVAL; } + /* + * Get a delivery system that is compatible with DVBv3 + * NOTE: in order for this to work with softwares like Kaffeine that + * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to + * DVB-S, drivers that support both should put the SYS_DVBS entry + * before the SYS_DVBS2, otherwise it won't switch back to DVB-S. + * The real fix is that userspace applications should not use DVBv3 + * and not trust on calling FE_SET_FRONTEND to switch the delivery + * system. + */ + ncaps = 0; + while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) { + if (fe->ops.delsys[ncaps] == desired_system) { + delsys = desired_system; + break; + } + ncaps++; + } + if (delsys == SYS_UNDEFINED) { + dprintk("%s() Couldn't find a delivery system that matches %d\n", + __func__, desired_system); + } } else { /* * This is a DVBv5 call. So, it likely knows the supported @@ -1491,9 +1516,10 @@ static int set_delivery_system(struct dvb_frontend *fe, u32 desired_system) __func__); return -EINVAL; } - c->delivery_system = delsys; } + c->delivery_system = delsys; + /* * The DVBv3 or DVBv5 call is requesting a different system. So, * emulation is needed. @@ -1833,6 +1859,13 @@ static int dtv_set_frontend(struct dvb_frontend *fe) return -EINVAL; /* + * Initialize output parameters to match the values given by + * 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); + + /* * Be sure that the bandwidth will be filled for all * non-satellite systems, as tuners need to know what * low pass/Nyquist half filter should be applied, in |