[media] DVB: allow to read back of detected parameters through S2API

Signed-off-by: Andreas Oberritter <obi@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 15 insertions, 4 deletions

diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index 3666529e2dd4..98278041d75f 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -1023,10 +1023,9 @@ static int is_legacy_delivery_system(fe_delivery_system_t s)
  * it's being used for the legacy or new API, reducing code and complexity.
  */
 static void dtv_property_cache_sync(struct dvb_frontend *fe,
-                                    struct dvb_frontend_parameters *p)
+                                    struct dtv_frontend_properties *c,
+                                    const struct dvb_frontend_parameters *p)
 {
-        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-
         c->frequency = p->frequency;
         c->inversion = p->inversion;
 
@@ -1200,8 +1199,20 @@ static int dtv_property_process_get(struct dvb_frontend *fe,
                                     struct file *file)
 {
         const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+        struct dvb_frontend_private *fepriv = fe->frontend_priv;
+        struct dtv_frontend_properties cdetected;
         int r;
 
+        /*
+         * If the driver implements a get_frontend function, then convert
+         * detected parameters to S2API properties.
+         */
+        if (fe->ops.get_frontend) {
+                cdetected = *c;
+                dtv_property_cache_sync(fe, &cdetected, &fepriv->parameters_out);
+                c = &cdetected;
+        }
+
         switch(tvp->cmd) {
         case DTV_FREQUENCY:
                 tvp->u.data = c->frequency;
@@ -1812,7 +1823,7 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
 
                         memcpy (&fepriv->parameters_in, parg,
                                 sizeof (struct dvb_frontend_parameters));
-                        dtv_property_cache_sync(fe, &fepriv->parameters_in);
+                        dtv_property_cache_sync(fe, c, &fepriv->parameters_in);
                 }
 
                 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));