summaryrefslogtreecommitdiffstats
path: root/drivers/media/tuners/e4000.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/tuners/e4000.c')
-rw-r--r--drivers/media/tuners/e4000.c744
1 files changed, 744 insertions, 0 deletions
diff --git a/drivers/media/tuners/e4000.c b/drivers/media/tuners/e4000.c
new file mode 100644
index 000000000..3f1f9af92
--- /dev/null
+++ b/drivers/media/tuners/e4000.c
@@ -0,0 +1,744 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Elonics E4000 silicon tuner driver
+ *
+ * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
+ */
+
+#include "e4000_priv.h"
+
+static int e4000_init(struct e4000_dev *dev)
+{
+ struct i2c_client *client = dev->client;
+ int ret;
+
+ dev_dbg(&client->dev, "\n");
+
+ /* reset */
+ ret = regmap_write(dev->regmap, 0x00, 0x01);
+ if (ret)
+ goto err;
+
+ /* disable output clock */
+ ret = regmap_write(dev->regmap, 0x06, 0x00);
+ if (ret)
+ goto err;
+
+ ret = regmap_write(dev->regmap, 0x7a, 0x96);
+ if (ret)
+ goto err;
+
+ /* configure gains */
+ ret = regmap_bulk_write(dev->regmap, 0x7e, "\x01\xfe", 2);
+ if (ret)
+ goto err;
+
+ ret = regmap_write(dev->regmap, 0x82, 0x00);
+ if (ret)
+ goto err;
+
+ ret = regmap_write(dev->regmap, 0x24, 0x05);
+ if (ret)
+ goto err;
+
+ ret = regmap_bulk_write(dev->regmap, 0x87, "\x20\x01", 2);
+ if (ret)
+ goto err;
+
+ ret = regmap_bulk_write(dev->regmap, 0x9f, "\x7f\x07", 2);
+ if (ret)
+ goto err;
+
+ /* DC offset control */
+ ret = regmap_write(dev->regmap, 0x2d, 0x1f);
+ if (ret)
+ goto err;
+
+ ret = regmap_bulk_write(dev->regmap, 0x70, "\x01\x01", 2);
+ if (ret)
+ goto err;
+
+ /* gain control */
+ ret = regmap_write(dev->regmap, 0x1a, 0x17);
+ if (ret)
+ goto err;
+
+ ret = regmap_write(dev->regmap, 0x1f, 0x1a);
+ if (ret)
+ goto err;
+
+ dev->active = true;
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int e4000_sleep(struct e4000_dev *dev)
+{
+ struct i2c_client *client = dev->client;
+ int ret;
+
+ dev_dbg(&client->dev, "\n");
+
+ dev->active = false;
+
+ ret = regmap_write(dev->regmap, 0x00, 0x00);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int e4000_set_params(struct e4000_dev *dev)
+{
+ struct i2c_client *client = dev->client;
+ int ret, i;
+ unsigned int div_n, k, k_cw, div_out;
+ u64 f_vco;
+ u8 buf[5], i_data[4], q_data[4];
+
+ if (!dev->active) {
+ dev_dbg(&client->dev, "tuner is sleeping\n");
+ return 0;
+ }
+
+ /* gain control manual */
+ ret = regmap_write(dev->regmap, 0x1a, 0x00);
+ if (ret)
+ goto err;
+
+ /*
+ * Fractional-N synthesizer
+ *
+ * +----------------------------+
+ * v |
+ * Fref +----+ +-------+ +------+ +---+
+ * ------> | PD | --> | VCO | ------> | /N.F | <-- | K |
+ * +----+ +-------+ +------+ +---+
+ * |
+ * |
+ * v
+ * +-------+ Fout
+ * | /Rout | ------>
+ * +-------+
+ */
+ for (i = 0; i < ARRAY_SIZE(e4000_pll_lut); i++) {
+ if (dev->f_frequency <= e4000_pll_lut[i].freq)
+ break;
+ }
+ if (i == ARRAY_SIZE(e4000_pll_lut)) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ #define F_REF dev->clk
+ div_out = e4000_pll_lut[i].div_out;
+ f_vco = (u64) dev->f_frequency * div_out;
+ /* calculate PLL integer and fractional control word */
+ div_n = div_u64_rem(f_vco, F_REF, &k);
+ k_cw = div_u64((u64) k * 0x10000, F_REF);
+
+ dev_dbg(&client->dev,
+ "frequency=%u bandwidth=%u f_vco=%llu F_REF=%u div_n=%u k=%u k_cw=%04x div_out=%u\n",
+ dev->f_frequency, dev->f_bandwidth, f_vco, F_REF, div_n, k,
+ k_cw, div_out);
+
+ buf[0] = div_n;
+ buf[1] = (k_cw >> 0) & 0xff;
+ buf[2] = (k_cw >> 8) & 0xff;
+ buf[3] = 0x00;
+ buf[4] = e4000_pll_lut[i].div_out_reg;
+ ret = regmap_bulk_write(dev->regmap, 0x09, buf, 5);
+ if (ret)
+ goto err;
+
+ /* LNA filter (RF filter) */
+ for (i = 0; i < ARRAY_SIZE(e400_lna_filter_lut); i++) {
+ if (dev->f_frequency <= e400_lna_filter_lut[i].freq)
+ break;
+ }
+ if (i == ARRAY_SIZE(e400_lna_filter_lut)) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = regmap_write(dev->regmap, 0x10, e400_lna_filter_lut[i].val);
+ if (ret)
+ goto err;
+
+ /* IF filters */
+ for (i = 0; i < ARRAY_SIZE(e4000_if_filter_lut); i++) {
+ if (dev->f_bandwidth <= e4000_if_filter_lut[i].freq)
+ break;
+ }
+ if (i == ARRAY_SIZE(e4000_if_filter_lut)) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ buf[0] = e4000_if_filter_lut[i].reg11_val;
+ buf[1] = e4000_if_filter_lut[i].reg12_val;
+
+ ret = regmap_bulk_write(dev->regmap, 0x11, buf, 2);
+ if (ret)
+ goto err;
+
+ /* frequency band */
+ for (i = 0; i < ARRAY_SIZE(e4000_band_lut); i++) {
+ if (dev->f_frequency <= e4000_band_lut[i].freq)
+ break;
+ }
+ if (i == ARRAY_SIZE(e4000_band_lut)) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = regmap_write(dev->regmap, 0x07, e4000_band_lut[i].reg07_val);
+ if (ret)
+ goto err;
+
+ ret = regmap_write(dev->regmap, 0x78, e4000_band_lut[i].reg78_val);
+ if (ret)
+ goto err;
+
+ /* DC offset */
+ for (i = 0; i < 4; i++) {
+ if (i == 0)
+ ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7e\x24", 3);
+ else if (i == 1)
+ ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7f", 2);
+ else if (i == 2)
+ ret = regmap_bulk_write(dev->regmap, 0x15, "\x01", 1);
+ else
+ ret = regmap_bulk_write(dev->regmap, 0x16, "\x7e", 1);
+
+ if (ret)
+ goto err;
+
+ ret = regmap_write(dev->regmap, 0x29, 0x01);
+ if (ret)
+ goto err;
+
+ ret = regmap_bulk_read(dev->regmap, 0x2a, buf, 3);
+ if (ret)
+ goto err;
+
+ i_data[i] = (((buf[2] >> 0) & 0x3) << 6) | (buf[0] & 0x3f);
+ q_data[i] = (((buf[2] >> 4) & 0x3) << 6) | (buf[1] & 0x3f);
+ }
+
+ swap(q_data[2], q_data[3]);
+ swap(i_data[2], i_data[3]);
+
+ ret = regmap_bulk_write(dev->regmap, 0x50, q_data, 4);
+ if (ret)
+ goto err;
+
+ ret = regmap_bulk_write(dev->regmap, 0x60, i_data, 4);
+ if (ret)
+ goto err;
+
+ /* gain control auto */
+ ret = regmap_write(dev->regmap, 0x1a, 0x17);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+/*
+ * 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 = 59000000,
+ .rangehigh = 1105000000,
+ },
+ {
+ .type = V4L2_TUNER_RF,
+ .index = 1,
+ .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
+ .rangelow = 1249000000,
+ .rangehigh = 2208000000UL,
+ },
+};
+
+static inline struct e4000_dev *e4000_subdev_to_dev(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct e4000_dev, sd);
+}
+
+static int e4000_standby(struct v4l2_subdev *sd)
+{
+ struct e4000_dev *dev = e4000_subdev_to_dev(sd);
+ int ret;
+
+ ret = e4000_sleep(dev);
+ if (ret)
+ return ret;
+
+ return e4000_set_params(dev);
+}
+
+static int e4000_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
+{
+ struct e4000_dev *dev = e4000_subdev_to_dev(sd);
+ struct i2c_client *client = dev->client;
+
+ dev_dbg(&client->dev, "index=%d\n", v->index);
+
+ strscpy(v->name, "Elonics E4000", 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[1].rangehigh;
+ return 0;
+}
+
+static int e4000_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v)
+{
+ struct e4000_dev *dev = e4000_subdev_to_dev(sd);
+ struct i2c_client *client = dev->client;
+
+ dev_dbg(&client->dev, "index=%d\n", v->index);
+ return 0;
+}
+
+static int e4000_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
+{
+ struct e4000_dev *dev = e4000_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 e4000_s_frequency(struct v4l2_subdev *sd,
+ const struct v4l2_frequency *f)
+{
+ struct e4000_dev *dev = e4000_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[1].rangehigh);
+ return e4000_set_params(dev);
+}
+
+static int e4000_enum_freq_bands(struct v4l2_subdev *sd,
+ struct v4l2_frequency_band *band)
+{
+ struct e4000_dev *dev = e4000_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 e4000_subdev_tuner_ops = {
+ .standby = e4000_standby,
+ .g_tuner = e4000_g_tuner,
+ .s_tuner = e4000_s_tuner,
+ .g_frequency = e4000_g_frequency,
+ .s_frequency = e4000_s_frequency,
+ .enum_freq_bands = e4000_enum_freq_bands,
+};
+
+static const struct v4l2_subdev_ops e4000_subdev_ops = {
+ .tuner = &e4000_subdev_tuner_ops,
+};
+
+static int e4000_set_lna_gain(struct dvb_frontend *fe)
+{
+ struct e4000_dev *dev = fe->tuner_priv;
+ struct i2c_client *client = dev->client;
+ int ret;
+ u8 u8tmp;
+
+ dev_dbg(&client->dev, "lna auto=%d->%d val=%d->%d\n",
+ dev->lna_gain_auto->cur.val, dev->lna_gain_auto->val,
+ dev->lna_gain->cur.val, dev->lna_gain->val);
+
+ if (dev->lna_gain_auto->val && dev->if_gain_auto->cur.val)
+ u8tmp = 0x17;
+ else if (dev->lna_gain_auto->val)
+ u8tmp = 0x19;
+ else if (dev->if_gain_auto->cur.val)
+ u8tmp = 0x16;
+ else
+ u8tmp = 0x10;
+
+ ret = regmap_write(dev->regmap, 0x1a, u8tmp);
+ if (ret)
+ goto err;
+
+ if (dev->lna_gain_auto->val == false) {
+ ret = regmap_write(dev->regmap, 0x14, dev->lna_gain->val);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int e4000_set_mixer_gain(struct dvb_frontend *fe)
+{
+ struct e4000_dev *dev = fe->tuner_priv;
+ struct i2c_client *client = dev->client;
+ int ret;
+ u8 u8tmp;
+
+ dev_dbg(&client->dev, "mixer auto=%d->%d val=%d->%d\n",
+ dev->mixer_gain_auto->cur.val, dev->mixer_gain_auto->val,
+ dev->mixer_gain->cur.val, dev->mixer_gain->val);
+
+ if (dev->mixer_gain_auto->val)
+ u8tmp = 0x15;
+ else
+ u8tmp = 0x14;
+
+ ret = regmap_write(dev->regmap, 0x20, u8tmp);
+ if (ret)
+ goto err;
+
+ if (dev->mixer_gain_auto->val == false) {
+ ret = regmap_write(dev->regmap, 0x15, dev->mixer_gain->val);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int e4000_set_if_gain(struct dvb_frontend *fe)
+{
+ struct e4000_dev *dev = fe->tuner_priv;
+ struct i2c_client *client = dev->client;
+ int ret;
+ u8 buf[2];
+ u8 u8tmp;
+
+ dev_dbg(&client->dev, "if auto=%d->%d val=%d->%d\n",
+ dev->if_gain_auto->cur.val, dev->if_gain_auto->val,
+ dev->if_gain->cur.val, dev->if_gain->val);
+
+ if (dev->if_gain_auto->val && dev->lna_gain_auto->cur.val)
+ u8tmp = 0x17;
+ else if (dev->lna_gain_auto->cur.val)
+ u8tmp = 0x19;
+ else if (dev->if_gain_auto->val)
+ u8tmp = 0x16;
+ else
+ u8tmp = 0x10;
+
+ ret = regmap_write(dev->regmap, 0x1a, u8tmp);
+ if (ret)
+ goto err;
+
+ if (dev->if_gain_auto->val == false) {
+ buf[0] = e4000_if_gain_lut[dev->if_gain->val].reg16_val;
+ buf[1] = e4000_if_gain_lut[dev->if_gain->val].reg17_val;
+ ret = regmap_bulk_write(dev->regmap, 0x16, buf, 2);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int e4000_pll_lock(struct dvb_frontend *fe)
+{
+ struct e4000_dev *dev = fe->tuner_priv;
+ struct i2c_client *client = dev->client;
+ int ret;
+ unsigned int uitmp;
+
+ ret = regmap_read(dev->regmap, 0x07, &uitmp);
+ if (ret)
+ goto err;
+
+ dev->pll_lock->val = (uitmp & 0x01);
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int e4000_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl);
+ struct i2c_client *client = dev->client;
+ int ret;
+
+ if (!dev->active)
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_RF_TUNER_PLL_LOCK:
+ ret = e4000_pll_lock(dev->fe);
+ break;
+ default:
+ dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n",
+ ctrl->id, ctrl->name);
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static int e4000_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl);
+ struct i2c_client *client = dev->client;
+ int ret;
+
+ if (!dev->active)
+ return 0;
+
+ 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 = e4000_set_params(dev);
+ break;
+ case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
+ case V4L2_CID_RF_TUNER_LNA_GAIN:
+ ret = e4000_set_lna_gain(dev->fe);
+ break;
+ case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:
+ case V4L2_CID_RF_TUNER_MIXER_GAIN:
+ ret = e4000_set_mixer_gain(dev->fe);
+ break;
+ case V4L2_CID_RF_TUNER_IF_GAIN_AUTO:
+ case V4L2_CID_RF_TUNER_IF_GAIN:
+ ret = e4000_set_if_gain(dev->fe);
+ break;
+ default:
+ dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n",
+ ctrl->id, ctrl->name);
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops e4000_ctrl_ops = {
+ .g_volatile_ctrl = e4000_g_volatile_ctrl,
+ .s_ctrl = e4000_s_ctrl,
+};
+#endif
+
+/*
+ * DVB API
+ */
+static int e4000_dvb_set_params(struct dvb_frontend *fe)
+{
+ struct e4000_dev *dev = fe->tuner_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+
+ dev->f_frequency = c->frequency;
+ dev->f_bandwidth = c->bandwidth_hz;
+ return e4000_set_params(dev);
+}
+
+static int e4000_dvb_init(struct dvb_frontend *fe)
+{
+ return e4000_init(fe->tuner_priv);
+}
+
+static int e4000_dvb_sleep(struct dvb_frontend *fe)
+{
+ return e4000_sleep(fe->tuner_priv);
+}
+
+static int e4000_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ *frequency = 0; /* Zero-IF */
+ return 0;
+}
+
+static const struct dvb_tuner_ops e4000_dvb_tuner_ops = {
+ .info = {
+ .name = "Elonics E4000",
+ .frequency_min_hz = 174 * MHz,
+ .frequency_max_hz = 862 * MHz,
+ },
+
+ .init = e4000_dvb_init,
+ .sleep = e4000_dvb_sleep,
+ .set_params = e4000_dvb_set_params,
+
+ .get_if_frequency = e4000_dvb_get_if_frequency,
+};
+
+static int e4000_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct e4000_dev *dev;
+ struct e4000_config *cfg = client->dev.platform_data;
+ struct dvb_frontend *fe = cfg->fe;
+ int ret;
+ unsigned int uitmp;
+ static const struct regmap_config regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ };
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ dev->clk = cfg->clock;
+ dev->client = client;
+ dev->fe = cfg->fe;
+ dev->regmap = devm_regmap_init_i2c(client, &regmap_config);
+ if (IS_ERR(dev->regmap)) {
+ ret = PTR_ERR(dev->regmap);
+ goto err_kfree;
+ }
+
+ /* check if the tuner is there */
+ ret = regmap_read(dev->regmap, 0x02, &uitmp);
+ if (ret)
+ goto err_kfree;
+
+ dev_dbg(&client->dev, "chip id=%02x\n", uitmp);
+
+ if (uitmp != 0x40) {
+ ret = -ENODEV;
+ goto err_kfree;
+ }
+
+ /* put sleep as chip seems to be in normal mode by default */
+ ret = regmap_write(dev->regmap, 0x00, 0x00);
+ if (ret)
+ goto err_kfree;
+
+#if IS_ENABLED(CONFIG_VIDEO_V4L2)
+ /* Register controls */
+ v4l2_ctrl_handler_init(&dev->hdl, 9);
+ dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
+ V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1);
+ dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
+ V4L2_CID_RF_TUNER_BANDWIDTH, 4300000, 11000000, 100000, 4300000);
+ v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
+ dev->lna_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
+ V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 1);
+ dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
+ V4L2_CID_RF_TUNER_LNA_GAIN, 0, 15, 1, 10);
+ v4l2_ctrl_auto_cluster(2, &dev->lna_gain_auto, 0, false);
+ dev->mixer_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
+ V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 1);
+ dev->mixer_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
+ V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1);
+ v4l2_ctrl_auto_cluster(2, &dev->mixer_gain_auto, 0, false);
+ dev->if_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
+ V4L2_CID_RF_TUNER_IF_GAIN_AUTO, 0, 1, 1, 1);
+ dev->if_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
+ V4L2_CID_RF_TUNER_IF_GAIN, 0, 54, 1, 0);
+ v4l2_ctrl_auto_cluster(2, &dev->if_gain_auto, 0, false);
+ dev->pll_lock = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
+ V4L2_CID_RF_TUNER_PLL_LOCK, 0, 1, 1, 0);
+ 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->sd.ctrl_handler = &dev->hdl;
+ dev->f_frequency = bands[0].rangelow;
+ dev->f_bandwidth = dev->bandwidth->val;
+ v4l2_i2c_subdev_init(&dev->sd, client, &e4000_subdev_ops);
+#endif
+ fe->tuner_priv = dev;
+ memcpy(&fe->ops.tuner_ops, &e4000_dvb_tuner_ops,
+ sizeof(fe->ops.tuner_ops));
+ v4l2_set_subdevdata(&dev->sd, client);
+ i2c_set_clientdata(client, &dev->sd);
+
+ dev_info(&client->dev, "Elonics E4000 successfully identified\n");
+ return 0;
+err_kfree:
+ kfree(dev);
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int e4000_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct e4000_dev *dev = container_of(sd, struct e4000_dev, sd);
+
+ dev_dbg(&client->dev, "\n");
+
+#if IS_ENABLED(CONFIG_VIDEO_V4L2)
+ v4l2_ctrl_handler_free(&dev->hdl);
+#endif
+ kfree(dev);
+
+ return 0;
+}
+
+static const struct i2c_device_id e4000_id_table[] = {
+ {"e4000", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, e4000_id_table);
+
+static struct i2c_driver e4000_driver = {
+ .driver = {
+ .name = "e4000",
+ .suppress_bind_attrs = true,
+ },
+ .probe = e4000_probe,
+ .remove = e4000_remove,
+ .id_table = e4000_id_table,
+};
+
+module_i2c_driver(e4000_driver);
+
+MODULE_DESCRIPTION("Elonics E4000 silicon tuner driver");
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 10:29:52 +0000