Instead of just disabling the LNA every time, allow to control it from
userspace.
Signed-off-by: Mauro Carvalho Chehab <m.che...@samsung.com>
---
drivers/media/dvb-frontends/drx39xyj/drxj.c | 41 +++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/drivers/media/dvb-frontends/drx39xyj/drxj.c
b/drivers/media/dvb-frontends/drx39xyj/drxj.c
index 7a28c20d2594..f48f320d7bf3 100644
--- a/drivers/media/dvb-frontends/drx39xyj/drxj.c
+++ b/drivers/media/dvb-frontends/drx39xyj/drxj.c
@@ -20683,6 +20683,46 @@ static int drx39xxj_init(struct dvb_frontend *fe)
return 0;
}
+static int drx39xxj_set_lna(struct dvb_frontend *fe)
+{
+ int result;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ struct drx39xxj_state *state = fe->demodulator_priv;
+ struct drx_demod_instance *demod = state->demod;
+ struct drxj_data *ext_attr = demod->my_ext_attr;
+ struct drxuio_cfg uio_cfg;
+ struct drxuio_data uio_data;
+
+ if (c->lna) {
+ if (!ext_attr->has_lna) {
+ pr_err("LNA is not supported on this device!\n");
+ return -EINVAL;
+
+ }
+ }
+
+ /* Turn off the LNA */
+ uio_cfg.uio = DRX_UIO1;
+ uio_cfg.mode = DRX_UIO_MODE_READWRITE;
+ /* Configure user-I/O #3: enable read/write */
+ result = ctrl_set_uio_cfg(demod, &uio_cfg);
+ if (result) {
+ pr_err("Failed to setup LNA GPIO!\n");
+ return result;
+ }
+
+ uio_data.uio = DRX_UIO1;
+ uio_data.value = c->lna;
+ result = ctrl_uio_write(demod, &uio_data);
+ if (result != 0) {
+ pr_err("Failed to %sable LNA!\n",
+ c->lna ? "en" : "dis");
+ return result;
+ }
+
+ return 0;
+}
+
static int drx39xxj_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *tune)
{
@@ -20824,6 +20864,7 @@ static struct dvb_frontend_ops drx39xxj_ops = {
.read_snr = drx39xxj_read_snr,
.read_ucblocks = drx39xxj_read_ucblocks,
.release = drx39xxj_release,
+ .set_lna = drx39xxj_set_lna,
};
MODULE_DESCRIPTION("Micronas DRX39xxj Frontend");
--
1.8.5.3
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