Implement PLL lock control to get PLL lock flag status from tuner
synthesizer.
Cc: Mauro Carvalho Chehab <m.che...@samsung.com>
Cc: Hans Verkuil <hverk...@xs4all.nl>
Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
drivers/media/tuners/e4000.c | 53 ++++++++++++++++++++++++++++++++++++++-
drivers/media/tuners/e4000_priv.h | 2 ++
2 files changed, 54 insertions(+), 1 deletion(-)
diff --git a/drivers/media/tuners/e4000.c b/drivers/media/tuners/e4000.c
index e439ef6..82c6b33 100644
--- a/drivers/media/tuners/e4000.c
+++ b/drivers/media/tuners/e4000.c
@@ -181,6 +181,8 @@ static int e4000_init(struct dvb_frontend *fe)
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
+ priv->active = true;
+
return 0;
err:
if (fe->ops.i2c_gate_ctrl)
@@ -197,6 +199,8 @@ static int e4000_sleep(struct dvb_frontend *fe)
dev_dbg(&priv->client->dev, "%s:\n", __func__);
+ priv->active = false;
+
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
@@ -512,6 +516,50 @@ err:
return ret;
}
+static int e4000_pll_lock(struct dvb_frontend *fe)
+{
+ struct e4000_priv *priv = fe->tuner_priv;
+ int ret;
+ u8 u8tmp;
+
+ if (priv->active == false)
+ return 0;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ ret = e4000_rd_reg(priv, 0x07, &u8tmp);
+ if (ret)
+ goto err;
+
+ priv->pll_lock->val = (u8tmp & 0x01);
+err:
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ if (ret)
+ dev_dbg(&priv->client->dev, "%s: failed=%d\n", __func__, ret);
+
+ return ret;
+}
+
+static int e4000_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct e4000_priv *priv =
+ container_of(ctrl->handler, struct e4000_priv, hdl);
+ int ret;
+
+ switch (ctrl->id) {
+ case V4L2_CID_RF_TUNER_PLL_LOCK:
+ ret = e4000_pll_lock(priv->fe);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
static int e4000_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct e4000_priv *priv =
@@ -550,6 +598,7 @@ static int e4000_s_ctrl(struct v4l2_ctrl *ctrl)
}
static const struct v4l2_ctrl_ops e4000_ctrl_ops = {
+ .g_volatile_ctrl = e4000_g_volatile_ctrl,
.s_ctrl = e4000_s_ctrl,
};
@@ -616,7 +665,7 @@ static int e4000_probe(struct i2c_client *client,
goto err;
/* Register controls */
- v4l2_ctrl_handler_init(&priv->hdl, 8);
+ v4l2_ctrl_handler_init(&priv->hdl, 9);
priv->bandwidth_auto = v4l2_ctrl_new_std(&priv->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1);
priv->bandwidth = v4l2_ctrl_new_std(&priv->hdl, &e4000_ctrl_ops,
@@ -637,6 +686,8 @@ static int e4000_probe(struct i2c_client *client,
priv->if_gain = v4l2_ctrl_new_std(&priv->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_IF_GAIN, 0, 54, 1, 0);
v4l2_ctrl_auto_cluster(2, &priv->if_gain_auto, 0, false);
+ priv->pll_lock = v4l2_ctrl_new_std(&priv->hdl, &e4000_ctrl_ops,
+ V4L2_CID_RF_TUNER_PLL_LOCK, 0, 1, 1, 0);
if (priv->hdl.error) {
ret = priv->hdl.error;
dev_err(&priv->client->dev, "Could not initialize controls\n");
diff --git a/drivers/media/tuners/e4000_priv.h
b/drivers/media/tuners/e4000_priv.h
index 8cc27b3..d41dbcc 100644
--- a/drivers/media/tuners/e4000_priv.h
+++ b/drivers/media/tuners/e4000_priv.h
@@ -28,6 +28,7 @@ struct e4000_priv {
struct i2c_client *client;
u32 clock;
struct dvb_frontend *fe;
+ bool active;
/* Controls */
struct v4l2_ctrl_handler hdl;
@@ -39,6 +40,7 @@ struct e4000_priv {
struct v4l2_ctrl *mixer_gain;
struct v4l2_ctrl *if_gain_auto;
struct v4l2_ctrl *if_gain;
+ struct v4l2_ctrl *pll_lock;
};
struct e4000_pll {
--
1.8.5.3
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
