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authorJemma Denson <jdenson@gmail.com>2015-05-05 16:59:27 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-05-18 16:36:38 -0300
commit9fc18f18a568a944e93de6f6c2148a688623429b (patch)
tree8c03d664f180deaab8f05371eaf40425eb82f4f4 /drivers/media/dvb-frontends/cx24120.c
parentc84251bb122d6abcb0178f2c922f9ef51740e7ad (diff)
[media] cx24120: Add DVBv5 signal strength stats
Add new get_stats function, called from read_status, for collecting DVBv5 stats into the frontend cache. Only signal strength for now, can add others later. Not currently marked as available, future patch will enable. Signed-off-by: Jemma Denson <jdenson@gmail.com> Signed-off-by: Patrick Boettcher <patrick.boettcher@posteo.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends/cx24120.c')
-rw-r--r--drivers/media/dvb-frontends/cx24120.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/cx24120.c b/drivers/media/dvb-frontends/cx24120.c
index 8238f80ea98e..ff16611b5eb4 100644
--- a/drivers/media/dvb-frontends/cx24120.c
+++ b/drivers/media/dvb-frontends/cx24120.c
@@ -615,6 +615,32 @@ static int cx24120_send_diseqc_msg(struct dvb_frontend *fe,
return -ETIMEDOUT;
}
+static void cx24120_get_stats(struct cx24120_state *state, fe_status_t status)
+{
+ struct dvb_frontend *fe = &state->frontend;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ int ret;
+ u16 u16tmp;
+
+ dev_dbg(&state->i2c->dev, "%s()\n", __func__);
+
+ /* signal strength */
+ if (status & FE_HAS_SIGNAL) {
+ ret = cx24120_read_signal_strength(fe, &u16tmp);
+ if (ret != 0)
+ return;
+
+ c->strength.stat[0].scale = FE_SCALE_RELATIVE;
+ c->strength.stat[0].uvalue = u16tmp;
+ } else {
+ c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ }
+
+ /* FIXME: add CNR */
+
+ /* FIXME: add UCB/BER */
+}
+
static void cx24120_set_clock_ratios(struct dvb_frontend *fe);
/* Read current tuning status */
@@ -643,6 +669,8 @@ static int cx24120_read_status(struct dvb_frontend *fe, fe_status_t *status)
* Other cx241xx drivers have this slightly
* different */
+ cx24120_get_stats(state, *status);
+
/* Set the clock once tuned in */
if (state->need_clock_set && *status & FE_HAS_LOCK) {
/* Set clock ratios */