Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 815 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
new file mode 100644
index 000000000..8157df457
--- /dev/null
+++ b/drivers/media/dvb-frontends/si2168.c
@@ -0,0 +1,815 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Silicon Labs Si2168 DVB-T/T2/C demodulator driver
+ *
+ * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
+ */
+
+#include <linux/delay.h>
+
+#include "si2168_priv.h"
+
+static const struct dvb_frontend_ops si2168_ops;
+
+static void cmd_init(struct si2168_cmd *cmd, const u8 *buf, int wlen, int rlen)
+{
+	memcpy(cmd->args, buf, wlen);
+	cmd->wlen = wlen;
+	cmd->rlen = rlen;
+}
+
+/* execute firmware command */
+static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd)
+{
+	struct si2168_dev *dev = i2c_get_clientdata(client);
+	int ret;
+	unsigned long timeout;
+
+	mutex_lock(&dev->i2c_mutex);
+
+	if (cmd->wlen) {
+		/* write cmd and args for firmware */
+		ret = i2c_master_send(client, cmd->args, cmd->wlen);
+		if (ret < 0) {
+			goto err_mutex_unlock;
+		} else if (ret != cmd->wlen) {
+			ret = -EREMOTEIO;
+			goto err_mutex_unlock;
+		}
+	}
+
+	if (cmd->rlen) {
+		/* wait cmd execution terminate */
+		#define TIMEOUT 70
+		timeout = jiffies + msecs_to_jiffies(TIMEOUT);
+		while (!time_after(jiffies, timeout)) {
+			ret = i2c_master_recv(client, cmd->args, cmd->rlen);
+			if (ret < 0) {
+				goto err_mutex_unlock;
+			} else if (ret != cmd->rlen) {
+				ret = -EREMOTEIO;
+				goto err_mutex_unlock;
+			}
+
+			/* firmware ready? */
+			if ((cmd->args[0] >> 7) & 0x01)
+				break;
+		}
+
+		dev_dbg(&client->dev, "cmd execution took %d ms\n",
+				jiffies_to_msecs(jiffies) -
+				(jiffies_to_msecs(timeout) - TIMEOUT));
+
+		/* error bit set? */
+		if ((cmd->args[0] >> 6) & 0x01) {
+			ret = -EREMOTEIO;
+			goto err_mutex_unlock;
+		}
+
+		if (!((cmd->args[0] >> 7) & 0x01)) {
+			ret = -ETIMEDOUT;
+			goto err_mutex_unlock;
+		}
+	}
+
+	mutex_unlock(&dev->i2c_mutex);
+	return 0;
+err_mutex_unlock:
+	mutex_unlock(&dev->i2c_mutex);
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2168_ts_bus_ctrl(struct dvb_frontend *fe, int acquire)
+{
+	struct i2c_client *client = fe->demodulator_priv;
+	struct si2168_dev *dev = i2c_get_clientdata(client);
+	struct si2168_cmd cmd;
+	int ret = 0;
+
+	dev_dbg(&client->dev, "%s acquire: %d\n", __func__, acquire);
+
+	/* set manual value */
+	if (dev->ts_mode & SI2168_TS_CLK_MANUAL) {
+		cmd_init(&cmd, "\x14\x00\x0d\x10\xe8\x03", 6, 4);
+		ret = si2168_cmd_execute(client, &cmd);
+		if (ret)
+			return ret;
+	}
+	/* set TS_MODE property */
+	cmd_init(&cmd, "\x14\x00\x01\x10\x10\x00", 6, 4);
+	if (dev->ts_mode & SI2168_TS_CLK_MANUAL)
+		cmd.args[4] = SI2168_TS_CLK_MANUAL;
+	if (acquire)
+		cmd.args[4] |= dev->ts_mode;
+	else
+		cmd.args[4] |= SI2168_TS_TRISTATE;
+	if (dev->ts_clock_gapped)
+		cmd.args[4] |= 0x40;
+	ret = si2168_cmd_execute(client, &cmd);
+
+	return ret;
+}
+
+static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status)
+{
+	struct i2c_client *client = fe->demodulator_priv;
+	struct si2168_dev *dev = i2c_get_clientdata(client);
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	int ret, i;
+	unsigned int utmp, utmp1, utmp2;
+	struct si2168_cmd cmd;
+
+	*status = 0;
+
+	if (!dev->active) {
+		ret = -EAGAIN;
+		goto err;
+	}
+
+	switch (c->delivery_system) {
+	case SYS_DVBT:
+		cmd_init(&cmd, "\xa0\x01", 2, 13);
+		break;
+	case SYS_DVBC_ANNEX_A:
+		cmd_init(&cmd, "\x90\x01", 2, 9);
+		break;
+	case SYS_DVBT2:
+		cmd_init(&cmd, "\x50\x01", 2, 14);
+		break;
+	default:
+		ret = -EINVAL;
+		goto err;
+	}
+
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	switch ((cmd.args[2] >> 1) & 0x03) {
+	case 0x01:
+		*status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
+		break;
+	case 0x03:
+		*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
+				FE_HAS_SYNC | FE_HAS_LOCK;
+		break;
+	}
+
+	dev->fe_status = *status;
+
+	if (*status & FE_HAS_LOCK) {
+		c->cnr.len = 1;
+		c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
+		c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
+	} else {
+		c->cnr.len = 1;
+		c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+	}
+
+	dev_dbg(&client->dev, "status=%02x args=%*ph\n",
+			*status, cmd.rlen, cmd.args);
+
+	/* BER */
+	if (*status & FE_HAS_VITERBI) {
+		cmd_init(&cmd, "\x82\x00", 2, 3);
+		ret = si2168_cmd_execute(client, &cmd);
+		if (ret)
+			goto err;
+
+		/*
+		 * Firmware returns [0, 255] mantissa and [0, 8] exponent.
+		 * Convert to DVB API: mantissa * 10^(8 - exponent) / 10^8
+		 */
+		utmp = clamp(8 - cmd.args[1], 0, 8);
+		for (i = 0, utmp1 = 1; i < utmp; i++)
+			utmp1 = utmp1 * 10;
+
+		utmp1 = cmd.args[2] * utmp1;
+		utmp2 = 100000000; /* 10^8 */
+
+		dev_dbg(&client->dev,
+			"post_bit_error=%u post_bit_count=%u ber=%u*10^-%u\n",
+			utmp1, utmp2, cmd.args[2], cmd.args[1]);
+
+		c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
+		c->post_bit_error.stat[0].uvalue += utmp1;
+		c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
+		c->post_bit_count.stat[0].uvalue += utmp2;
+	} else {
+		c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+		c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+	}
+
+	/* UCB */
+	if (*status & FE_HAS_SYNC) {
+		cmd_init(&cmd, "\x84\x01", 2, 3);
+		ret = si2168_cmd_execute(client, &cmd);
+		if (ret)
+			goto err;
+
+		utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0;
+		dev_dbg(&client->dev, "block_error=%u\n", utmp1);
+
+		/* Sometimes firmware returns bogus value */
+		if (utmp1 == 0xffff)
+			utmp1 = 0;
+
+		c->block_error.stat[0].scale = FE_SCALE_COUNTER;
+		c->block_error.stat[0].uvalue += utmp1;
+	} else {
+		c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+	}
+
+	return 0;
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2168_set_frontend(struct dvb_frontend *fe)
+{
+	struct i2c_client *client = fe->demodulator_priv;
+	struct si2168_dev *dev = i2c_get_clientdata(client);
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	int ret;
+	struct si2168_cmd cmd;
+	u8 bandwidth, delivery_system;
+
+	dev_dbg(&client->dev,
+			"delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n",
+			c->delivery_system, c->modulation, c->frequency,
+			c->bandwidth_hz, c->symbol_rate, c->inversion,
+			c->stream_id);
+
+	if (!dev->active) {
+		ret = -EAGAIN;
+		goto err;
+	}
+
+	switch (c->delivery_system) {
+	case SYS_DVBT:
+		delivery_system = 0x20;
+		break;
+	case SYS_DVBC_ANNEX_A:
+		delivery_system = 0x30;
+		break;
+	case SYS_DVBT2:
+		delivery_system = 0x70;
+		break;
+	default:
+		ret = -EINVAL;
+		goto err;
+	}
+
+	if (c->bandwidth_hz == 0) {
+		ret = -EINVAL;
+		goto err;
+	} else if (c->bandwidth_hz <= 2000000)
+		bandwidth = 0x02;
+	else if (c->bandwidth_hz <= 5000000)
+		bandwidth = 0x05;
+	else if (c->bandwidth_hz <= 6000000)
+		bandwidth = 0x06;
+	else if (c->bandwidth_hz <= 7000000)
+		bandwidth = 0x07;
+	else if (c->bandwidth_hz <= 8000000)
+		bandwidth = 0x08;
+	else if (c->bandwidth_hz <= 9000000)
+		bandwidth = 0x09;
+	else if (c->bandwidth_hz <= 10000000)
+		bandwidth = 0x0a;
+	else
+		bandwidth = 0x0f;
+
+	/* program tuner */
+	if (fe->ops.tuner_ops.set_params) {
+		ret = fe->ops.tuner_ops.set_params(fe);
+		if (ret)
+			goto err;
+	}
+
+	cmd_init(&cmd, "\x88\x02\x02\x02\x02", 5, 5);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* that has no big effect */
+	if (c->delivery_system == SYS_DVBT)
+		cmd_init(&cmd, "\x89\x21\x06\x11\xff\x98", 6, 3);
+	else if (c->delivery_system == SYS_DVBC_ANNEX_A)
+		cmd_init(&cmd, "\x89\x21\x06\x11\x89\xf0", 6, 3);
+	else if (c->delivery_system == SYS_DVBT2)
+		cmd_init(&cmd, "\x89\x21\x06\x11\x89\x20", 6, 3);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	if (c->delivery_system == SYS_DVBT2) {
+		/* select PLP */
+		cmd.args[0] = 0x52;
+		cmd.args[1] = c->stream_id & 0xff;
+		cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
+		cmd.wlen = 3;
+		cmd.rlen = 1;
+		ret = si2168_cmd_execute(client, &cmd);
+		if (ret)
+			goto err;
+	}
+
+	cmd_init(&cmd, "\x51\x03", 2, 12);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	cmd_init(&cmd, "\x12\x08\x04", 3, 3);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	cmd_init(&cmd, "\x14\x00\x0c\x10\x12\x00", 6, 4);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	cmd_init(&cmd, "\x14\x00\x06\x10\x24\x00", 6, 4);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	cmd_init(&cmd, "\x14\x00\x07\x10\x00\x24", 6, 4);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	cmd_init(&cmd, "\x14\x00\x0a\x10\x00\x00", 6, 4);
+	cmd.args[4] = delivery_system | bandwidth;
+	if (dev->spectral_inversion)
+		cmd.args[5] |= 1;
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* set DVB-C symbol rate */
+	if (c->delivery_system == SYS_DVBC_ANNEX_A) {
+		cmd_init(&cmd, "\x14\x00\x02\x11\x00\x00", 6, 4);
+		cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;
+		cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
+		ret = si2168_cmd_execute(client, &cmd);
+		if (ret)
+			goto err;
+	}
+
+	cmd_init(&cmd, "\x14\x00\x0f\x10\x10\x00", 6, 4);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	cmd_init(&cmd, "\x14\x00\x09\x10\xe3\x08", 6, 4);
+	cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	cmd_init(&cmd, "\x14\x00\x08\x10\xd7\x05", 6, 4);
+	cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	cmd_init(&cmd, "\x14\x00\x01\x12\x00\x00", 6, 4);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	cmd_init(&cmd, "\x14\x00\x01\x03\x0c\x00", 6, 4);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	cmd_init(&cmd, "\x85", 1, 1);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	dev->delivery_system = c->delivery_system;
+
+	/* enable ts bus */
+	ret = si2168_ts_bus_ctrl(fe, 1);
+	if (ret)
+		goto err;
+
+	return 0;
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2168_init(struct dvb_frontend *fe)
+{
+	struct i2c_client *client = fe->demodulator_priv;
+	struct si2168_dev *dev = i2c_get_clientdata(client);
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	int ret, len, remaining;
+	const struct firmware *fw;
+	struct si2168_cmd cmd;
+
+	dev_dbg(&client->dev, "\n");
+
+	/* initialize */
+	cmd_init(&cmd, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00",
+		 13, 0);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	if (dev->warm) {
+		/* resume */
+		cmd_init(&cmd, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8, 1);
+		ret = si2168_cmd_execute(client, &cmd);
+		if (ret)
+			goto err;
+
+		udelay(100);
+		cmd_init(&cmd, "\x85", 1, 1);
+		ret = si2168_cmd_execute(client, &cmd);
+		if (ret)
+			goto err;
+
+		goto warm;
+	}
+
+	/* power up */
+	cmd_init(&cmd, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8, 1);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* request the firmware, this will block and timeout */
+	ret = request_firmware(&fw, dev->firmware_name, &client->dev);
+	if (ret) {
+		dev_err(&client->dev,
+			"firmware file '%s' not found\n",
+			dev->firmware_name);
+		goto err_release_firmware;
+	}
+
+	dev_info(&client->dev, "downloading firmware from file '%s'\n",
+			dev->firmware_name);
+
+	if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
+		/* firmware is in the new format */
+		for (remaining = fw->size; remaining > 0; remaining -= 17) {
+			len = fw->data[fw->size - remaining];
+			if (len > SI2168_ARGLEN) {
+				ret = -EINVAL;
+				break;
+			}
+			cmd_init(&cmd, &fw->data[(fw->size - remaining) + 1],
+				 len, 1);
+			ret = si2168_cmd_execute(client, &cmd);
+			if (ret)
+				break;
+		}
+	} else if (fw->size % 8 == 0) {
+		/* firmware is in the old format */
+		for (remaining = fw->size; remaining > 0; remaining -= 8) {
+			cmd_init(&cmd, &fw->data[fw->size - remaining], 8, 1);
+			ret = si2168_cmd_execute(client, &cmd);
+			if (ret)
+				break;
+		}
+	} else {
+		/* bad or unknown firmware format */
+		ret = -EINVAL;
+	}
+
+	if (ret) {
+		dev_err(&client->dev, "firmware download failed %d\n", ret);
+		goto err_release_firmware;
+	}
+
+	release_firmware(fw);
+
+	cmd_init(&cmd, "\x01\x01", 2, 1);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* query firmware version */
+	cmd_init(&cmd, "\x11", 1, 10);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 |
+		       (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0;
+	dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",
+		 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
+		 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);
+
+	/* set ts mode */
+	ret = si2168_ts_bus_ctrl(fe, 1);
+	if (ret)
+		goto err;
+
+	dev->warm = true;
+	dev->initialized = true;
+warm:
+	/* Init stats here to indicate which stats are supported */
+	c->cnr.len = 1;
+	c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+	c->post_bit_error.len = 1;
+	c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+	c->post_bit_count.len = 1;
+	c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+	c->block_error.len = 1;
+	c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+
+	dev->active = true;
+
+	return 0;
+err_release_firmware:
+	release_firmware(fw);
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2168_resume(struct dvb_frontend *fe)
+{
+	struct i2c_client *client = fe->demodulator_priv;
+	struct si2168_dev *dev = i2c_get_clientdata(client);
+
+	/*
+	 * check whether si2168_init() has been called successfully
+	 * outside of a resume cycle. Only call it (and load firmware)
+	 * in this case. si2168_init() is only called during resume
+	 * once the device has actually been used. Otherwise, leave the
+	 * device untouched.
+	 */
+	if (dev->initialized) {
+		dev_dbg(&client->dev, "previously initialized, call si2168_init()\n");
+		return si2168_init(fe);
+	}
+	dev_dbg(&client->dev, "not initialized yet, skipping init on resume\n");
+	return 0;
+}
+
+static int si2168_sleep(struct dvb_frontend *fe)
+{
+	struct i2c_client *client = fe->demodulator_priv;
+	struct si2168_dev *dev = i2c_get_clientdata(client);
+	int ret;
+	struct si2168_cmd cmd;
+
+	dev_dbg(&client->dev, "\n");
+
+	dev->active = false;
+
+	/* tri-state data bus */
+	ret = si2168_ts_bus_ctrl(fe, 0);
+	if (ret)
+		goto err;
+
+	/* Firmware later than B 4.0-11 loses warm state during sleep */
+	if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0))
+		dev->warm = false;
+
+	cmd_init(&cmd, "\x13", 1, 0);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	return 0;
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2168_get_tune_settings(struct dvb_frontend *fe,
+	struct dvb_frontend_tune_settings *s)
+{
+	s->min_delay_ms = 900;
+
+	return 0;
+}
+
+static int si2168_select(struct i2c_mux_core *muxc, u32 chan)
+{
+	struct i2c_client *client = i2c_mux_priv(muxc);
+	int ret;
+	struct si2168_cmd cmd;
+
+	/* open I2C gate */
+	cmd_init(&cmd, "\xc0\x0d\x01", 3, 0);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	return 0;
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan)
+{
+	struct i2c_client *client = i2c_mux_priv(muxc);
+	int ret;
+	struct si2168_cmd cmd;
+
+	/* close I2C gate */
+	cmd_init(&cmd, "\xc0\x0d\x00", 3, 0);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	return 0;
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static const struct dvb_frontend_ops si2168_ops = {
+	.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
+	.info = {
+		.name = "Silicon Labs Si2168",
+		.frequency_min_hz      =  48 * MHz,
+		.frequency_max_hz      = 870 * MHz,
+		.frequency_stepsize_hz = 62500,
+		.symbol_rate_min       = 1000000,
+		.symbol_rate_max       = 7200000,
+		.caps =	FE_CAN_FEC_1_2 |
+			FE_CAN_FEC_2_3 |
+			FE_CAN_FEC_3_4 |
+			FE_CAN_FEC_5_6 |
+			FE_CAN_FEC_7_8 |
+			FE_CAN_FEC_AUTO |
+			FE_CAN_QPSK |
+			FE_CAN_QAM_16 |
+			FE_CAN_QAM_32 |
+			FE_CAN_QAM_64 |
+			FE_CAN_QAM_128 |
+			FE_CAN_QAM_256 |
+			FE_CAN_QAM_AUTO |
+			FE_CAN_TRANSMISSION_MODE_AUTO |
+			FE_CAN_GUARD_INTERVAL_AUTO |
+			FE_CAN_HIERARCHY_AUTO |
+			FE_CAN_MUTE_TS |
+			FE_CAN_2G_MODULATION |
+			FE_CAN_MULTISTREAM
+	},
+
+	.get_tune_settings = si2168_get_tune_settings,
+
+	.init = si2168_init,
+	.sleep = si2168_sleep,
+	.resume = si2168_resume,
+
+	.set_frontend = si2168_set_frontend,
+
+	.read_status = si2168_read_status,
+};
+
+static int si2168_probe(struct i2c_client *client,
+		const struct i2c_device_id *id)
+{
+	struct si2168_config *config = client->dev.platform_data;
+	struct si2168_dev *dev;
+	int ret;
+	struct si2168_cmd cmd;
+
+	dev_dbg(&client->dev, "\n");
+
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	i2c_set_clientdata(client, dev);
+	mutex_init(&dev->i2c_mutex);
+
+	/* Initialize */
+	cmd_init(&cmd, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00",
+		 13, 0);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err_kfree;
+
+	/* Power up */
+	cmd_init(&cmd, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8, 1);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err_kfree;
+
+	/* Query chip revision */
+	cmd_init(&cmd, "\x02", 1, 13);
+	ret = si2168_cmd_execute(client, &cmd);
+	if (ret)
+		goto err_kfree;
+
+	dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 |
+		       cmd.args[3] << 8 | cmd.args[4] << 0;
+
+	switch (dev->chip_id) {
+	case SI2168_CHIP_ID_A20:
+		dev->firmware_name = SI2168_A20_FIRMWARE;
+		break;
+	case SI2168_CHIP_ID_A30:
+		dev->firmware_name = SI2168_A30_FIRMWARE;
+		break;
+	case SI2168_CHIP_ID_B40:
+		dev->firmware_name = SI2168_B40_FIRMWARE;
+		break;
+	case SI2168_CHIP_ID_D60:
+		dev->firmware_name = SI2168_D60_FIRMWARE;
+		break;
+	default:
+		dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
+			cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
+		ret = -ENODEV;
+		goto err_kfree;
+	}
+
+	dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 |
+		       (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0;
+
+	/* create mux i2c adapter for tuner */
+	dev->muxc = i2c_mux_alloc(client->adapter, &client->dev,
+				  1, 0, I2C_MUX_LOCKED,
+				  si2168_select, si2168_deselect);
+	if (!dev->muxc) {
+		ret = -ENOMEM;
+		goto err_kfree;
+	}
+	dev->muxc->priv = client;
+	ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
+	if (ret)
+		goto err_kfree;
+
+	/* create dvb_frontend */
+	memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
+	dev->fe.demodulator_priv = client;
+	*config->i2c_adapter = dev->muxc->adapter[0];
+	*config->fe = &dev->fe;
+	dev->ts_mode = config->ts_mode;
+	dev->ts_clock_inv = config->ts_clock_inv;
+	dev->ts_clock_gapped = config->ts_clock_gapped;
+	dev->spectral_inversion = config->spectral_inversion;
+
+	dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n",
+		 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
+		 dev->version >> 8 & 0xff);
+	dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",
+		 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
+		 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);
+
+	return 0;
+err_kfree:
+	kfree(dev);
+err:
+	dev_warn(&client->dev, "probe failed = %d\n", ret);
+	return ret;
+}
+
+static void si2168_remove(struct i2c_client *client)
+{
+	struct si2168_dev *dev = i2c_get_clientdata(client);
+
+	dev_dbg(&client->dev, "\n");
+
+	i2c_mux_del_adapters(dev->muxc);
+
+	dev->fe.ops.release = NULL;
+	dev->fe.demodulator_priv = NULL;
+
+	kfree(dev);
+}
+
+static const struct i2c_device_id si2168_id_table[] = {
+	{"si2168", 0},
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, si2168_id_table);
+
+static struct i2c_driver si2168_driver = {
+	.driver = {
+		.name                = "si2168",
+		.suppress_bind_attrs = true,
+	},
+	.probe		= si2168_probe,
+	.remove		= si2168_remove,
+	.id_table	= si2168_id_table,
+};
+
+module_i2c_driver(si2168_driver);
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(SI2168_A20_FIRMWARE);
+MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
+MODULE_FIRMWARE(SI2168_B40_FIRMWARE);
+MODULE_FIRMWARE(SI2168_D60_FIRMWARE);