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Commit ecfb7ca3 authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
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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: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent 0ed0b22d

drivers/media/tuners/e4000.c

+52 −1
Original line number Diff line number Diff line
@@ -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 @@ static int e4000_set_if_gain(struct dvb_frontend *fe) 
	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");

drivers/media/tuners/e4000_priv.h

+2 −0
Original line number Diff line number Diff line
@@ -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 {