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[media] e4000: implement PLL lock v4l control 

Implement PLL lock control to get PLL lock flag status from tuner
synthesizer.

Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Antti Palosaari 2014-02-07 02:55:57 -03:00 committed by Mauro Carvalho Chehab
parent 0ed0b22dc5
commit ecfb7ca3c8
2 changed files with 54 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
drivers/media/tuners/e4000.c
View File

@ -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,
};
@ -613,7 +662,7 @@ 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,
@ -634,6 +683,8 @@ 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");

2
drivers/media/tuners/e4000_priv.h
View File

@ -30,6 +30,7 @@ struct e4000_priv {
u32 clock;
struct dvb_frontend *fe;
struct v4l2_subdev sd;
bool active;
/* Controls */
struct v4l2_ctrl_handler hdl;
@ -41,6 +42,7 @@ 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 {