3 files changed, 249 insertions, 29 deletions

diff --git a/drivers/media/tuners/fc2580.c b/drivers/media/tuners/fc2580.c
index 30cee76b5f37..db21902b6e63 100644
--- a/drivers/media/tuners/fc2580.c
+++ b/drivers/media/tuners/fc2580.c
@@ -38,20 +38,19 @@ static int fc2580_wr_reg_ff(struct fc2580_dev *dev, u8 reg, u8 val)
 		return regmap_write(dev->regmap, reg, val);
 }
 
-static int fc2580_set_params(struct dvb_frontend *fe)
+static int fc2580_set_params(struct fc2580_dev *dev)
 {
-	struct fc2580_dev *dev = fe->tuner_priv;
 	struct i2c_client *client = dev->client;
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	int ret, i;
 	unsigned int uitmp, div_ref, div_ref_val, div_n, k, k_cw, div_out;
 	u64 f_vco;
 	u8 synth_config;
 	unsigned long timeout;
 
-	dev_dbg(&client->dev,
-		"delivery_system=%u frequency=%u bandwidth_hz=%u\n",
-		c->delivery_system, c->frequency, c->bandwidth_hz);
+	if (!dev->active) {
+		dev_dbg(&client->dev, "tuner is sleeping\n");
+		return 0;
+	}
 
 	/*
 	 * Fractional-N synthesizer
@@ -69,7 +68,7 @@ static int fc2580_set_params(struct dvb_frontend *fe)
 	 *                               +-------+
 	 */
 	for (i = 0; i < ARRAY_SIZE(fc2580_pll_lut); i++) {
-		if (c->frequency <= fc2580_pll_lut[i].freq)
+		if (dev->f_frequency <= fc2580_pll_lut[i].freq)
 			break;
 	}
 	if (i == ARRAY_SIZE(fc2580_pll_lut)) {
@@ -80,7 +79,7 @@ static int fc2580_set_params(struct dvb_frontend *fe)
 	#define DIV_PRE_N 2
 	#define F_REF dev->clk
 	div_out = fc2580_pll_lut[i].div_out;
-	f_vco = (u64) c->frequency * div_out;
+	f_vco = (u64) dev->f_frequency * div_out;
 	synth_config = fc2580_pll_lut[i].band;
 	if (f_vco < 2600000000ULL)
 		synth_config |= 0x06;
@@ -106,8 +105,9 @@ static int fc2580_set_params(struct dvb_frontend *fe)
 	k_cw = div_u64((u64) k * 0x100000, uitmp);
 
 	dev_dbg(&client->dev,
-		"frequency=%u f_vco=%llu F_REF=%u div_ref=%u div_n=%u k=%u div_out=%u k_cw=%0x\n",
-		c->frequency, f_vco, F_REF, div_ref, div_n, k, div_out, k_cw);
+		"frequency=%u bandwidth=%u f_vco=%llu F_REF=%u div_ref=%u div_n=%u k=%u div_out=%u k_cw=%0x\n",
+		dev->f_frequency, dev->f_bandwidth, f_vco, F_REF, div_ref,
+		div_n, k, div_out, k_cw);
 
 	ret = regmap_write(dev->regmap, 0x02, synth_config);
 	if (ret)
@@ -131,7 +131,7 @@ static int fc2580_set_params(struct dvb_frontend *fe)
 
 	/* registers */
 	for (i = 0; i < ARRAY_SIZE(fc2580_freq_regs_lut); i++) {
-		if (c->frequency <= fc2580_freq_regs_lut[i].freq)
+		if (dev->f_frequency <= fc2580_freq_regs_lut[i].freq)
 			break;
 	}
 	if (i == ARRAY_SIZE(fc2580_freq_regs_lut)) {
@@ -237,7 +237,7 @@ static int fc2580_set_params(struct dvb_frontend *fe)
 
 	/* IF filters */
 	for (i = 0; i < ARRAY_SIZE(fc2580_if_filter_lut); i++) {
-		if (c->bandwidth_hz <= fc2580_if_filter_lut[i].freq)
+		if (dev->f_bandwidth <= fc2580_if_filter_lut[i].freq)
 			break;
 	}
 	if (i == ARRAY_SIZE(fc2580_if_filter_lut)) {
@@ -249,7 +249,7 @@ static int fc2580_set_params(struct dvb_frontend *fe)
 	if (ret)
 		goto err;
 
-	uitmp = (unsigned int) 8058000 - (c->bandwidth_hz * 122 / 100 / 2);
+	uitmp = (unsigned int) 8058000 - (dev->f_bandwidth * 122 / 100 / 2);
 	uitmp = div64_u64((u64) dev->clk * uitmp, 1000000000000ULL);
 	ret = regmap_write(dev->regmap, 0x37, uitmp);
 	if (ret)
@@ -285,9 +285,8 @@ err:
 	return ret;
 }
 
-static int fc2580_init(struct dvb_frontend *fe)
+static int fc2580_init(struct fc2580_dev *dev)
 {
-	struct fc2580_dev *dev = fe->tuner_priv;
 	struct i2c_client *client = dev->client;
 	int ret, i;
 
@@ -300,56 +299,236 @@ static int fc2580_init(struct dvb_frontend *fe)
 			goto err;
 	}
 
+	dev->active = true;
 	return 0;
 err:
 	dev_dbg(&client->dev, "failed=%d\n", ret);
 	return ret;
 }
 
-static int fc2580_sleep(struct dvb_frontend *fe)
+static int fc2580_sleep(struct fc2580_dev *dev)
 {
-	struct fc2580_dev *dev = fe->tuner_priv;
 	struct i2c_client *client = dev->client;
 	int ret;
 
 	dev_dbg(&client->dev, "\n");
 
+	dev->active = false;
+
 	ret = regmap_write(dev->regmap, 0x02, 0x0a);
 	if (ret)
 		goto err;
-
 	return 0;
 err:
 	dev_dbg(&client->dev, "failed=%d\n", ret);
 	return ret;
 }
 
-static int fc2580_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+/*
+ * DVB API
+ */
+static int fc2580_dvb_set_params(struct dvb_frontend *fe)
 {
 	struct fc2580_dev *dev = fe->tuner_priv;
-	struct i2c_client *client = dev->client;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 
-	dev_dbg(&client->dev, "\n");
+	dev->f_frequency = c->frequency;
+	dev->f_bandwidth = c->bandwidth_hz;
+	return fc2580_set_params(dev);
+}
 
-	*frequency = 0; /* Zero-IF */
+static int fc2580_dvb_init(struct dvb_frontend *fe)
+{
+	return fc2580_init(fe->tuner_priv);
+}
 
+static int fc2580_dvb_sleep(struct dvb_frontend *fe)
+{
+	return fc2580_sleep(fe->tuner_priv);
+}
+
+static int fc2580_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	*frequency = 0; /* Zero-IF */
 	return 0;
 }
 
-static const struct dvb_tuner_ops fc2580_tuner_ops = {
+static const struct dvb_tuner_ops fc2580_dvb_tuner_ops = {
 	.info = {
 		.name           = "FCI FC2580",
 		.frequency_min  = 174000000,
 		.frequency_max  = 862000000,
 	},
 
-	.init = fc2580_init,
-	.sleep = fc2580_sleep,
-	.set_params = fc2580_set_params,
+	.init = fc2580_dvb_init,
+	.sleep = fc2580_dvb_sleep,
+	.set_params = fc2580_dvb_set_params,
 
-	.get_if_frequency = fc2580_get_if_frequency,
+	.get_if_frequency = fc2580_dvb_get_if_frequency,
 };
 
+/*
+ * V4L2 API
+ */
+#if IS_ENABLED(CONFIG_VIDEO_V4L2)
+static const struct v4l2_frequency_band bands[] = {
+	{
+		.type = V4L2_TUNER_RF,
+		.index = 0,
+		.capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
+		.rangelow   =   130000000,
+		.rangehigh  =  2000000000,
+	},
+};
+
+static inline struct fc2580_dev *fc2580_subdev_to_dev(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct fc2580_dev, subdev);
+}
+
+static int fc2580_s_power(struct v4l2_subdev *sd, int on)
+{
+	struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+	struct i2c_client *client = dev->client;
+	int ret;
+
+	dev_dbg(&client->dev, "on=%d\n", on);
+
+	if (on)
+		ret = fc2580_init(dev);
+	else
+		ret = fc2580_sleep(dev);
+	if (ret)
+		return ret;
+
+	return fc2580_set_params(dev);
+}
+
+static const struct v4l2_subdev_core_ops fc2580_subdev_core_ops = {
+	.s_power                  = fc2580_s_power,
+};
+
+static int fc2580_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
+{
+	struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+	struct i2c_client *client = dev->client;
+
+	dev_dbg(&client->dev, "index=%d\n", v->index);
+
+	strlcpy(v->name, "FCI FC2580", sizeof(v->name));
+	v->type = V4L2_TUNER_RF;
+	v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
+	v->rangelow  = bands[0].rangelow;
+	v->rangehigh = bands[0].rangehigh;
+	return 0;
+}
+
+static int fc2580_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v)
+{
+	struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+	struct i2c_client *client = dev->client;
+
+	dev_dbg(&client->dev, "index=%d\n", v->index);
+	return 0;
+}
+
+static int fc2580_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
+{
+	struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+	struct i2c_client *client = dev->client;
+
+	dev_dbg(&client->dev, "tuner=%d\n", f->tuner);
+	f->frequency = dev->f_frequency;
+	return 0;
+}
+
+static int fc2580_s_frequency(struct v4l2_subdev *sd,
+			      const struct v4l2_frequency *f)
+{
+	struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+	struct i2c_client *client = dev->client;
+
+	dev_dbg(&client->dev, "tuner=%d type=%d frequency=%u\n",
+		f->tuner, f->type, f->frequency);
+
+	dev->f_frequency = clamp_t(unsigned int, f->frequency,
+				   bands[0].rangelow, bands[0].rangehigh);
+	return fc2580_set_params(dev);
+}
+
+static int fc2580_enum_freq_bands(struct v4l2_subdev *sd,
+				  struct v4l2_frequency_band *band)
+{
+	struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
+	struct i2c_client *client = dev->client;
+
+	dev_dbg(&client->dev, "tuner=%d type=%d index=%d\n",
+		band->tuner, band->type, band->index);
+
+	if (band->index >= ARRAY_SIZE(bands))
+		return -EINVAL;
+
+	band->capability = bands[band->index].capability;
+	band->rangelow = bands[band->index].rangelow;
+	band->rangehigh = bands[band->index].rangehigh;
+	return 0;
+}
+
+static const struct v4l2_subdev_tuner_ops fc2580_subdev_tuner_ops = {
+	.g_tuner                  = fc2580_g_tuner,
+	.s_tuner                  = fc2580_s_tuner,
+	.g_frequency              = fc2580_g_frequency,
+	.s_frequency              = fc2580_s_frequency,
+	.enum_freq_bands          = fc2580_enum_freq_bands,
+};
+
+static const struct v4l2_subdev_ops fc2580_subdev_ops = {
+	.core                     = &fc2580_subdev_core_ops,
+	.tuner                    = &fc2580_subdev_tuner_ops,
+};
+
+static int fc2580_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct fc2580_dev *dev = container_of(ctrl->handler, struct fc2580_dev, hdl);
+	struct i2c_client *client = dev->client;
+	int ret;
+
+	dev_dbg(&client->dev, "ctrl: id=%d name=%s cur.val=%d val=%d\n",
+		ctrl->id, ctrl->name, ctrl->cur.val, ctrl->val);
+
+	switch (ctrl->id) {
+	case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
+	case V4L2_CID_RF_TUNER_BANDWIDTH:
+		/*
+		 * TODO: Auto logic does not work 100% correctly as tuner driver
+		 * do not have information to calculate maximum suitable
+		 * bandwidth. Calculating it is responsible of master driver.
+		 */
+		dev->f_bandwidth = dev->bandwidth->val;
+		ret = fc2580_set_params(dev);
+		break;
+	default:
+		dev_dbg(&client->dev, "unknown ctrl");
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops fc2580_ctrl_ops = {
+	.s_ctrl = fc2580_s_ctrl,
+};
+#endif
+
+static struct v4l2_subdev *fc2580_get_v4l2_subdev(struct i2c_client *client)
+{
+	struct fc2580_dev *dev = i2c_get_clientdata(client);
+
+	if (dev->subdev.ops)
+		return &dev->subdev;
+	else
+		return NULL;
+}
+
 static int fc2580_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
@@ -395,9 +574,31 @@ static int fc2580_probe(struct i2c_client *client,
 		goto err_kfree;
 	}
 
+#if IS_ENABLED(CONFIG_VIDEO_V4L2)
+	/* Register controls */
+	v4l2_ctrl_handler_init(&dev->hdl, 2);
+	dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &fc2580_ctrl_ops,
+						V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
+						0, 1, 1, 1);
+	dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &fc2580_ctrl_ops,
+					   V4L2_CID_RF_TUNER_BANDWIDTH,
+					   3000, 10000000, 1, 3000);
+	v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
+	if (dev->hdl.error) {
+		ret = dev->hdl.error;
+		dev_err(&client->dev, "Could not initialize controls\n");
+		v4l2_ctrl_handler_free(&dev->hdl);
+		goto err_kfree;
+	}
+	dev->subdev.ctrl_handler = &dev->hdl;
+	dev->f_frequency = bands[0].rangelow;
+	dev->f_bandwidth = dev->bandwidth->val;
+	v4l2_i2c_subdev_init(&dev->subdev, client, &fc2580_subdev_ops);
+#endif
 	fe->tuner_priv = dev;
-	memcpy(&fe->ops.tuner_ops, &fc2580_tuner_ops,
-			sizeof(struct dvb_tuner_ops));
+	memcpy(&fe->ops.tuner_ops, &fc2580_dvb_tuner_ops,
+	       sizeof(fe->ops.tuner_ops));
+	pdata->get_v4l2_subdev = fc2580_get_v4l2_subdev;
 	i2c_set_clientdata(client, dev);
 
 	dev_info(&client->dev, "FCI FC2580 successfully identified\n");
@@ -415,6 +616,9 @@ static int fc2580_remove(struct i2c_client *client)
 
 	dev_dbg(&client->dev, "\n");
 
+#if IS_ENABLED(CONFIG_VIDEO_V4L2)
+	v4l2_ctrl_handler_free(&dev->hdl);
+#endif
 	kfree(dev);
 	return 0;
 }
diff --git a/drivers/media/tuners/fc2580.h b/drivers/media/tuners/fc2580.h
index 61ee0e826cb9..862ea46995d7 100644
--- a/drivers/media/tuners/fc2580.h
+++ b/drivers/media/tuners/fc2580.h
@@ -22,6 +22,8 @@
 #define FC2580_H
 
 #include "dvb_frontend.h"
+#include <media/v4l2-subdev.h>
+#include <linux/i2c.h>
 
 /*
  * I2C address
@@ -32,10 +34,13 @@
  * struct fc2580_platform_data - Platform data for the fc2580 driver
  * @clk: Clock frequency (0 = internal clock).
  * @dvb_frontend: DVB frontend.
+ * @get_v4l2_subdev: Get V4L2 subdev.
  */
 struct fc2580_platform_data {
 	u32 clk;
 	struct dvb_frontend *dvb_frontend;
+
+	struct v4l2_subdev* (*get_v4l2_subdev)(struct i2c_client *);
 };
 
 #endif
diff --git a/drivers/media/tuners/fc2580_priv.h b/drivers/media/tuners/fc2580_priv.h
index bd88b0141141..031a43d7e7af 100644
--- a/drivers/media/tuners/fc2580_priv.h
+++ b/drivers/media/tuners/fc2580_priv.h
@@ -22,6 +22,8 @@
 #define FC2580_PRIV_H
 
 #include "fc2580.h"
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-subdev.h>
 #include <linux/regmap.h>
 #include <linux/math64.h>
 
@@ -131,6 +133,15 @@ struct fc2580_dev {
 	u32 clk;
 	struct i2c_client *client;
 	struct regmap *regmap;
+	struct v4l2_subdev subdev;
+	bool active;
+	unsigned int f_frequency;
+	unsigned int f_bandwidth;
+
+	/* Controls */
+	struct v4l2_ctrl_handler hdl;
+	struct v4l2_ctrl *bandwidth_auto;
+	struct v4l2_ctrl *bandwidth;
 };
 
 #endif