Adding upstream version 6.1.76.upstream/6.1.76upstream

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

1 files changed, 1015 insertions, 0 deletions

diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c
new file mode 100644
index 000000000..476b32c04
--- /dev/null
+++ b/drivers/media/tuners/si2157.c
@@ -0,0 +1,1015 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Silicon Labs Si2146/2147/2148/2157/2158 silicon tuner driver
+ *
+ * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
+ */
+
+#include "si2157_priv.h"
+
+static const struct dvb_tuner_ops si2157_ops;
+
+static int tuner_lock_debug;
+module_param(tuner_lock_debug, int, 0644);
+MODULE_PARM_DESC(tuner_lock_debug, "if set, signal lock is briefly waited on after setting params");
+
+/* execute firmware command */
+static int si2157_cmd_execute(struct i2c_client *client, struct si2157_cmd *cmd)
+{
+	struct si2157_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 80
+		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, status=%x\n",
+			jiffies_to_msecs(jiffies) -
+			(jiffies_to_msecs(timeout) - TIMEOUT),
+			cmd->args[0]);
+
+		if (!((cmd->args[0] >> 7) & 0x01)) {
+			ret = -ETIMEDOUT;
+			goto err_mutex_unlock;
+		}
+		/* check error status bit */
+		if (cmd->args[0] & 0x40) {
+			ret = -EAGAIN;
+			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 const struct si2157_tuner_info si2157_tuners[] = {
+	{ SI2141, 0x60, false, SI2141_60_FIRMWARE, SI2141_A10_FIRMWARE },
+	{ SI2141, 0x61, false, SI2141_61_FIRMWARE, SI2141_A10_FIRMWARE },
+	{ SI2146, 0x11, false, SI2146_11_FIRMWARE, NULL },
+	{ SI2147, 0x50, false, SI2147_50_FIRMWARE, NULL },
+	{ SI2148, 0x32, true,  SI2148_32_FIRMWARE, SI2158_A20_FIRMWARE },
+	{ SI2148, 0x33, true,  SI2148_33_FIRMWARE, SI2158_A20_FIRMWARE },
+	{ SI2157, 0x50, false, SI2157_50_FIRMWARE, SI2157_A30_FIRMWARE },
+	{ SI2158, 0x50, false, SI2158_50_FIRMWARE, SI2158_A20_FIRMWARE },
+	{ SI2158, 0x51, false, SI2158_51_FIRMWARE, SI2158_A20_FIRMWARE },
+	{ SI2177, 0x50, false, SI2177_50_FIRMWARE, SI2157_A30_FIRMWARE },
+};
+
+static int si2157_load_firmware(struct dvb_frontend *fe,
+				const char *fw_name)
+{
+	struct i2c_client *client = fe->tuner_priv;
+	const struct firmware *fw;
+	int ret, len, remaining;
+	struct si2157_cmd cmd;
+
+	/* request the firmware, this will block and timeout */
+	ret = firmware_request_nowarn(&fw, fw_name, &client->dev);
+	if (ret)
+		return ret;
+
+	/* firmware should be n chunks of 17 bytes */
+	if (fw->size % 17 != 0) {
+		dev_err(&client->dev, "firmware file '%s' is invalid\n",
+			fw_name);
+		ret = -EINVAL;
+		goto err_release_firmware;
+	}
+
+	dev_info(&client->dev, "downloading firmware from file '%s'\n",
+		 fw_name);
+
+	for (remaining = fw->size; remaining > 0; remaining -= 17) {
+		len = fw->data[fw->size - remaining];
+		if (len > SI2157_ARGLEN) {
+			dev_err(&client->dev, "Bad firmware length\n");
+			ret = -EINVAL;
+			goto err_release_firmware;
+		}
+		memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
+		cmd.wlen = len;
+		cmd.rlen = 1;
+		ret = si2157_cmd_execute(client, &cmd);
+		if (ret) {
+			dev_err(&client->dev, "firmware download failed %d\n",
+					ret);
+			goto err_release_firmware;
+		}
+	}
+
+err_release_firmware:
+	release_firmware(fw);
+
+	return ret;
+}
+
+static int si2157_find_and_load_firmware(struct dvb_frontend *fe)
+{
+	struct i2c_client *client = fe->tuner_priv;
+	struct si2157_dev *dev = i2c_get_clientdata(client);
+	const char *fw_alt_name = NULL;
+	unsigned char part_id, rom_id;
+	const char *fw_name = NULL;
+	struct si2157_cmd cmd;
+	bool required = true;
+	int ret, i;
+
+	if (dev->dont_load_firmware) {
+		dev_info(&client->dev,
+			 "device is buggy, skipping firmware download\n");
+		return 0;
+	}
+
+	/* query chip revision */
+	memcpy(cmd.args, "\x02", 1);
+	cmd.wlen = 1;
+	cmd.rlen = 13;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		return ret;
+
+	part_id = cmd.args[2];
+	rom_id = cmd.args[12];
+
+	for (i = 0; i < ARRAY_SIZE(si2157_tuners); i++) {
+		if (si2157_tuners[i].part_id != part_id)
+			continue;
+		required = si2157_tuners[i].required;
+		fw_alt_name = si2157_tuners[i].fw_alt_name;
+
+		/* Both part and rom ID match */
+		if (si2157_tuners[i].rom_id == rom_id) {
+			fw_name = si2157_tuners[i].fw_name;
+			break;
+		}
+	}
+
+	if (required && !fw_name && !fw_alt_name) {
+		dev_err(&client->dev,
+			"unknown chip version Si21%d-%c%c%c ROM 0x%02x\n",
+			part_id, cmd.args[1], cmd.args[3], cmd.args[4], rom_id);
+		return -EINVAL;
+	}
+
+	/* Update the part id based on device's report */
+	dev->part_id = part_id;
+
+	dev_info(&client->dev,
+		 "found a 'Silicon Labs Si21%d-%c%c%c ROM 0x%02x'\n",
+		 part_id, cmd.args[1], cmd.args[3], cmd.args[4], rom_id);
+
+	if (fw_name)
+		ret = si2157_load_firmware(fe, fw_name);
+	else
+		ret = -ENOENT;
+
+	/* Try alternate name, if any */
+	if (ret == -ENOENT && fw_alt_name)
+		ret = si2157_load_firmware(fe, fw_alt_name);
+
+	if (ret == -ENOENT) {
+		if (!required) {
+			dev_info(&client->dev, "Using ROM firmware.\n");
+			return 0;
+		}
+		dev_err(&client->dev, "Can't continue without a firmware.\n");
+	} else if (ret < 0) {
+		dev_err(&client->dev, "error %d when loading firmware\n", ret);
+	}
+	return ret;
+}
+
+static int si2157_init(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	struct i2c_client *client = fe->tuner_priv;
+	struct si2157_dev *dev = i2c_get_clientdata(client);
+	unsigned int xtal_trim;
+	struct si2157_cmd cmd;
+	int ret;
+
+	dev_dbg(&client->dev, "\n");
+
+	/* Try to get Xtal trim property, to verify tuner still running */
+	memcpy(cmd.args, "\x15\x00\x02\x04", 4);
+	cmd.wlen = 4;
+	cmd.rlen = 4;
+	ret = si2157_cmd_execute(client, &cmd);
+
+	xtal_trim = cmd.args[2] | (cmd.args[3] << 8);
+
+	if (ret == 0 && xtal_trim < 16)
+		goto warm;
+
+	dev->if_frequency = 0; /* we no longer know current tuner state */
+
+	/* power up */
+	if (dev->part_id == SI2146) {
+		/* clock_mode = XTAL, clock_freq = 24MHz */
+		memcpy(cmd.args, "\xc0\x05\x01\x00\x00\x0b\x00\x00\x01", 9);
+		cmd.wlen = 9;
+	} else if (dev->part_id == SI2141) {
+		/* clock_mode: XTAL, xout enabled */
+		memcpy(cmd.args, "\xc0\x00\x0d\x0e\x00\x01\x01\x01\x01\x03", 10);
+		cmd.wlen = 10;
+	} else {
+		memcpy(cmd.args, "\xc0\x00\x0c\x00\x00\x01\x01\x01\x01\x01\x01\x02\x00\x00\x01", 15);
+		cmd.wlen = 15;
+	}
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret && (dev->part_id != SI2141 || ret != -EAGAIN))
+		goto err;
+
+	/* Si2141 needs a wake up command */
+	if (dev->part_id == SI2141) {
+		memcpy(cmd.args, "\xc0\x08\x01\x02\x00\x00\x01", 7);
+		cmd.wlen = 7;
+		ret = si2157_cmd_execute(client, &cmd);
+		if (ret)
+			goto err;
+	}
+
+	/* Try to load the firmware */
+	ret = si2157_find_and_load_firmware(fe);
+	if (ret < 0)
+		goto err;
+
+	/* reboot the tuner with new firmware? */
+	memcpy(cmd.args, "\x01\x01", 2);
+	cmd.wlen = 2;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* query firmware version */
+	memcpy(cmd.args, "\x11", 1);
+	cmd.wlen = 1;
+	cmd.rlen = 10;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	dev_info(&client->dev, "firmware version: %c.%c.%d\n",
+			cmd.args[6], cmd.args[7], cmd.args[8]);
+
+	/* enable tuner status flags */
+	memcpy(cmd.args, "\x14\x00\x01\x05\x01\x00", 6);
+	cmd.wlen = 6;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	memcpy(cmd.args, "\x14\x00\x01\x06\x01\x00", 6);
+	cmd.wlen = 6;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	memcpy(cmd.args, "\x14\x00\x01\x07\x01\x00", 6);
+	cmd.wlen = 6;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+warm:
+	/* init statistics in order signal app which are supported */
+	c->strength.len = 1;
+	c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+	/* start statistics polling */
+	schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(1000));
+
+	dev->active = true;
+	return 0;
+
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2157_sleep(struct dvb_frontend *fe)
+{
+	struct i2c_client *client = fe->tuner_priv;
+	struct si2157_dev *dev = i2c_get_clientdata(client);
+	int ret;
+	struct si2157_cmd cmd;
+
+	dev_dbg(&client->dev, "\n");
+
+	dev->active = false;
+
+	/* stop statistics polling */
+	cancel_delayed_work_sync(&dev->stat_work);
+
+	/* standby */
+	memcpy(cmd.args, "\x16\x00", 2);
+	cmd.wlen = 2;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	return 0;
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2157_tune_wait(struct i2c_client *client, u8 is_digital)
+{
+#define TUN_TIMEOUT 40
+#define DIG_TIMEOUT 30
+#define ANALOG_TIMEOUT 150
+	struct si2157_dev *dev = i2c_get_clientdata(client);
+	int ret;
+	unsigned long timeout;
+	unsigned long start_time;
+	u8 wait_status;
+	u8  tune_lock_mask;
+
+	if (is_digital)
+		tune_lock_mask = 0x04;
+	else
+		tune_lock_mask = 0x02;
+
+	mutex_lock(&dev->i2c_mutex);
+
+	/* wait tuner command complete */
+	start_time = jiffies;
+	timeout = start_time + msecs_to_jiffies(TUN_TIMEOUT);
+	while (1) {
+		ret = i2c_master_recv(client, &wait_status,
+				      sizeof(wait_status));
+		if (ret < 0) {
+			goto err_mutex_unlock;
+		} else if (ret != sizeof(wait_status)) {
+			ret = -EREMOTEIO;
+			goto err_mutex_unlock;
+		}
+
+		if (time_after(jiffies, timeout))
+			break;
+
+		/* tuner done? */
+		if ((wait_status & 0x81) == 0x81)
+			break;
+		usleep_range(5000, 10000);
+	}
+
+	dev_dbg(&client->dev, "tuning took %d ms, status=0x%x\n",
+		jiffies_to_msecs(jiffies) - jiffies_to_msecs(start_time),
+		wait_status);
+
+	/* if we tuned ok, wait a bit for tuner lock */
+	if (tuner_lock_debug && (wait_status & 0x81) == 0x81) {
+		if (is_digital)
+			timeout = jiffies + msecs_to_jiffies(DIG_TIMEOUT);
+		else
+			timeout = jiffies + msecs_to_jiffies(ANALOG_TIMEOUT);
+
+		while (!time_after(jiffies, timeout)) {
+			ret = i2c_master_recv(client, &wait_status,
+					      sizeof(wait_status));
+			if (ret < 0) {
+				goto err_mutex_unlock;
+			} else if (ret != sizeof(wait_status)) {
+				ret = -EREMOTEIO;
+				goto err_mutex_unlock;
+			}
+
+			/* tuner locked? */
+			if (wait_status & tune_lock_mask)
+				break;
+			usleep_range(5000, 10000);
+		}
+
+		dev_dbg(&client->dev, "tuning+lock took %d ms, status=0x%x\n",
+			jiffies_to_msecs(jiffies) - jiffies_to_msecs(start_time),
+			wait_status);
+	}
+
+	if ((wait_status & 0xc0) != 0x80) {
+		ret = -ETIMEDOUT;
+		goto err_mutex_unlock;
+	}
+
+	mutex_unlock(&dev->i2c_mutex);
+	return 0;
+
+err_mutex_unlock:
+	mutex_unlock(&dev->i2c_mutex);
+	dev_err(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2157_set_params(struct dvb_frontend *fe)
+{
+	struct i2c_client *client = fe->tuner_priv;
+	struct si2157_dev *dev = i2c_get_clientdata(client);
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	int ret;
+	struct si2157_cmd cmd;
+	u8 bw, delivery_system;
+	u32 bandwidth;
+	u32 if_frequency = 5000000;
+
+	dev_dbg(&client->dev,
+			"delivery_system=%d frequency=%u bandwidth_hz=%u\n",
+			c->delivery_system, c->frequency, c->bandwidth_hz);
+
+	if (!dev->active) {
+		ret = -EAGAIN;
+		goto err;
+	}
+
+	if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 1700000) {
+		bandwidth = 1700000;
+		bw = 9;
+	} else if (c->bandwidth_hz <= 6000000) {
+		bandwidth = 6000000;
+		bw = 6;
+	} else if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 6100000) {
+		bandwidth = 6100000;
+		bw = 10;
+	} else if (c->bandwidth_hz <= 7000000) {
+		bandwidth = 7000000;
+		bw = 7;
+	} else {
+		bandwidth = 8000000;
+		bw = 8;
+	}
+
+	switch (c->delivery_system) {
+	case SYS_ATSC:
+			delivery_system = 0x00;
+			if_frequency = 3250000;
+			break;
+	case SYS_DVBC_ANNEX_B:
+			delivery_system = 0x10;
+			if_frequency = 4000000;
+			break;
+	case SYS_DVBT:
+	case SYS_DVBT2: /* it seems DVB-T and DVB-T2 both are 0x20 here */
+			delivery_system = 0x20;
+			break;
+	case SYS_DVBC_ANNEX_A:
+	case SYS_DVBC_ANNEX_C:
+			delivery_system = 0x30;
+			break;
+	case SYS_ISDBT:
+			delivery_system = 0x40;
+			break;
+	case SYS_DTMB:
+			delivery_system = 0x60;
+			break;
+	default:
+			ret = -EINVAL;
+			goto err;
+	}
+
+	memcpy(cmd.args, "\x14\x00\x03\x07\x00\x00", 6);
+	cmd.args[4] = delivery_system | bw;
+	if (dev->inversion)
+		cmd.args[5] = 0x01;
+	cmd.wlen = 6;
+	cmd.rlen = 4;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* On SI2146, set DTV AGC source to DLIF_AGC_3DB */
+	if (dev->part_id == SI2146)
+		memcpy(cmd.args, "\x14\x00\x02\x07\x00\x01", 6);
+	else
+		memcpy(cmd.args, "\x14\x00\x02\x07\x00\x00", 6);
+	cmd.args[4] = dev->if_port;
+	cmd.wlen = 6;
+	cmd.rlen = 4;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* set digital if frequency if needed */
+	if (if_frequency != dev->if_frequency) {
+		memcpy(cmd.args, "\x14\x00\x06\x07", 4);
+		cmd.args[4] = (if_frequency / 1000) & 0xff;
+		cmd.args[5] = ((if_frequency / 1000) >> 8) & 0xff;
+		cmd.wlen = 6;
+		cmd.rlen = 4;
+		ret = si2157_cmd_execute(client, &cmd);
+		if (ret)
+			goto err;
+
+		dev->if_frequency = if_frequency;
+	}
+
+	/* set digital frequency */
+	memcpy(cmd.args, "\x41\x00\x00\x00\x00\x00\x00\x00", 8);
+	cmd.args[4] = (c->frequency >>  0) & 0xff;
+	cmd.args[5] = (c->frequency >>  8) & 0xff;
+	cmd.args[6] = (c->frequency >> 16) & 0xff;
+	cmd.args[7] = (c->frequency >> 24) & 0xff;
+	cmd.wlen = 8;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	dev->bandwidth = bandwidth;
+	dev->frequency = c->frequency;
+
+	si2157_tune_wait(client, 1); /* wait to complete, ignore any errors */
+
+	return 0;
+err:
+	dev->bandwidth = 0;
+	dev->frequency = 0;
+	dev->if_frequency = 0;
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2157_set_analog_params(struct dvb_frontend *fe,
+				    struct analog_parameters *params)
+{
+	struct i2c_client *client = fe->tuner_priv;
+	struct si2157_dev *dev = i2c_get_clientdata(client);
+	char *std; /* for debugging */
+	int ret;
+	struct si2157_cmd cmd;
+	u32 bandwidth = 0;
+	u32 if_frequency = 0;
+	u32 freq = 0;
+	u64 tmp_lval = 0;
+	u8 system = 0;
+	u8 color = 0;    /* 0=NTSC/PAL, 0x10=SECAM */
+	u8 invert_analog = 1; /* analog tuner spectrum; 0=normal, 1=inverted */
+
+	if (!SUPPORTS_ATV_IF(dev)) {
+		dev_info(&client->dev, "Analog tuning not supported yet for Si21%d\n",
+			 dev->part_id);
+		ret = -EINVAL;
+		goto err;
+	}
+
+	if (!dev->active)
+		si2157_init(fe);
+
+	if (!dev->active) {
+		ret = -EAGAIN;
+		goto err;
+	}
+	if (params->mode == V4L2_TUNER_RADIO) {
+	/*
+	 * std = "fm";
+	 * bandwidth = 1700000; //best can do for FM, AGC will be a mess though
+	 * if_frequency = 1250000;  //HVR-225x(saa7164), HVR-12xx(cx23885)
+	 * if_frequency = 6600000;  //HVR-9xx(cx231xx)
+	 * if_frequency = 5500000;  //HVR-19xx(pvrusb2)
+	 */
+		dev_err(&client->dev, "si2157 does not currently support FM radio\n");
+		ret = -EINVAL;
+		goto err;
+	}
+	tmp_lval = params->frequency * 625LL;
+	do_div(tmp_lval, 10); /* convert to HZ */
+	freq = (u32)tmp_lval;
+
+	if (freq < 1000000) /* is freq in KHz */
+		freq = freq * 1000;
+	dev->frequency = freq;
+
+	/* if_frequency values based on tda187271C2 */
+	if (params->std & (V4L2_STD_B | V4L2_STD_GH)) {
+		if (freq >= 470000000) {
+			std = "palGH";
+			bandwidth = 8000000;
+			if_frequency = 6000000;
+			system = 1;
+			if (params->std &
+			    (V4L2_STD_SECAM_G | V4L2_STD_SECAM_H)) {
+				std = "secamGH";
+				color = 0x10;
+			}
+		} else {
+			std = "palB";
+			bandwidth = 7000000;
+			if_frequency = 6000000;
+			system = 0;
+			if (params->std & V4L2_STD_SECAM_B) {
+				std = "secamB";
+				color = 0x10;
+			}
+		}
+	} else if (params->std & V4L2_STD_MN) {
+		std = "MN";
+		bandwidth = 6000000;
+		if_frequency = 5400000;
+		system = 2;
+	} else if (params->std & V4L2_STD_PAL_I) {
+		std = "palI";
+		bandwidth = 8000000;
+		if_frequency = 7250000; /* TODO: does not work yet */
+		system = 4;
+	} else if (params->std & V4L2_STD_DK) {
+		std = "palDK";
+		bandwidth = 8000000;
+		if_frequency = 6900000; /* TODO: does not work yet */
+		system = 5;
+		if (params->std & V4L2_STD_SECAM_DK) {
+			std = "secamDK";
+			color = 0x10;
+		}
+	} else if (params->std & V4L2_STD_SECAM_L) {
+		std = "secamL";
+		bandwidth = 8000000;
+		if_frequency = 6750000; /* TODO: untested */
+		system = 6;
+		color = 0x10;
+	} else if (params->std & V4L2_STD_SECAM_LC) {
+		std = "secamL'";
+		bandwidth = 7000000;
+		if_frequency = 1250000; /* TODO: untested */
+		system = 7;
+		color = 0x10;
+	} else {
+		std = "unknown";
+	}
+	/* calc channel center freq */
+	freq = freq - 1250000 + (bandwidth / 2);
+
+	dev_dbg(&client->dev,
+		"mode=%d system=%u std='%s' params->frequency=%u center freq=%u if=%u bandwidth=%u\n",
+		params->mode, system, std, params->frequency,
+		freq, if_frequency, bandwidth);
+
+	/* set analog IF port */
+	memcpy(cmd.args, "\x14\x00\x03\x06\x08\x02", 6);
+	/* in using dev->if_port, we assume analog and digital IF's */
+	/*   are always on different ports */
+	/* assumes if_port definition is 0 or 1 for digital out */
+	cmd.args[4] = (dev->if_port == 1) ? 8 : 10;
+	/* Analog AGC assumed external */
+	cmd.args[5] = (dev->if_port == 1) ? 2 : 1;
+	cmd.wlen = 6;
+	cmd.rlen = 4;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* set analog IF output config */
+	memcpy(cmd.args, "\x14\x00\x0d\x06\x94\x64", 6);
+	cmd.wlen = 6;
+	cmd.rlen = 4;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* make this distinct from a digital IF */
+	dev->if_frequency = if_frequency | 1;
+
+	/* calc and set tuner analog if center frequency */
+	if_frequency = if_frequency + 1250000 - (bandwidth / 2);
+	dev_dbg(&client->dev, "IF Ctr freq=%d\n", if_frequency);
+
+	memcpy(cmd.args, "\x14\x00\x0C\x06", 4);
+	cmd.args[4] = (if_frequency / 1000) & 0xff;
+	cmd.args[5] = ((if_frequency / 1000) >> 8) & 0xff;
+	cmd.wlen = 6;
+	cmd.rlen = 4;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* set analog AGC config */
+	memcpy(cmd.args, "\x14\x00\x07\x06\x32\xc8", 6);
+	cmd.wlen = 6;
+	cmd.rlen = 4;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* set analog video mode */
+	memcpy(cmd.args, "\x14\x00\x04\x06\x00\x00", 6);
+	cmd.args[4] = system | color;
+	/* can use dev->inversion if assumed applies to both digital/analog */
+	if (invert_analog)
+		cmd.args[5] |= 0x02;
+	cmd.wlen = 6;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	/* set analog frequency */
+	memcpy(cmd.args, "\x41\x01\x00\x00\x00\x00\x00\x00", 8);
+	cmd.args[4] = (freq >>  0) & 0xff;
+	cmd.args[5] = (freq >>  8) & 0xff;
+	cmd.args[6] = (freq >> 16) & 0xff;
+	cmd.args[7] = (freq >> 24) & 0xff;
+	cmd.wlen = 8;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	dev->bandwidth = bandwidth;
+
+	si2157_tune_wait(client, 0); /* wait to complete, ignore any errors */
+
+	return 0;
+err:
+	dev->bandwidth = 0;
+	dev->frequency = 0;
+	dev->if_frequency = 0;
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2157_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct i2c_client *client = fe->tuner_priv;
+	struct si2157_dev *dev = i2c_get_clientdata(client);
+
+	*frequency = dev->frequency;
+	dev_dbg(&client->dev, "freq=%u\n", dev->frequency);
+	return 0;
+}
+
+static int si2157_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+	struct i2c_client *client = fe->tuner_priv;
+	struct si2157_dev *dev = i2c_get_clientdata(client);
+
+	*bandwidth = dev->bandwidth;
+	dev_dbg(&client->dev, "bandwidth=%u\n", dev->bandwidth);
+	return 0;
+}
+
+static int si2157_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct i2c_client *client = fe->tuner_priv;
+	struct si2157_dev *dev = i2c_get_clientdata(client);
+
+	*frequency = dev->if_frequency & ~1; /* strip analog IF indicator bit */
+	dev_dbg(&client->dev, "if_frequency=%u\n", *frequency);
+	return 0;
+}
+
+static int si2157_get_rf_strength(struct dvb_frontend *fe, u16 *rssi)
+{
+	struct i2c_client *client = fe->tuner_priv;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	struct si2157_cmd cmd;
+	int ret;
+	int strength;
+
+	dev_dbg(&client->dev, "\n");
+
+	memcpy(cmd.args, "\x42\x00", 2);
+	cmd.wlen = 2;
+	cmd.rlen = 12;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	c->strength.stat[0].scale = FE_SCALE_DECIBEL;
+	c->strength.stat[0].svalue = (s8)cmd.args[3] * 1000;
+
+	/* normalize values based on Silicon Labs reference
+	 * add 100, then anything > 80 is 100% signal
+	 */
+	strength = (s8)cmd.args[3] + 100;
+	strength = clamp_val(strength, 0, 80);
+	*rssi = (u16)(strength * 0xffff / 80);
+
+	dev_dbg(&client->dev, "strength=%d rssi=%u\n",
+		(s8)cmd.args[3], *rssi);
+
+	return 0;
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static const struct dvb_tuner_ops si2157_ops = {
+	.info = {
+		.name             = "Silicon Labs Si2141/Si2146/2147/2148/2157/2158",
+		.frequency_min_hz =  42 * MHz,
+		.frequency_max_hz = 870 * MHz,
+	},
+
+	.init = si2157_init,
+	.sleep = si2157_sleep,
+	.set_params = si2157_set_params,
+	.set_analog_params = si2157_set_analog_params,
+	.get_frequency     = si2157_get_frequency,
+	.get_bandwidth     = si2157_get_bandwidth,
+	.get_if_frequency  = si2157_get_if_frequency,
+
+	.get_rf_strength   = si2157_get_rf_strength,
+};
+
+static void si2157_stat_work(struct work_struct *work)
+{
+	struct si2157_dev *dev = container_of(work, struct si2157_dev, stat_work.work);
+	struct dvb_frontend *fe = dev->fe;
+	struct i2c_client *client = fe->tuner_priv;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	struct si2157_cmd cmd;
+	int ret;
+
+	dev_dbg(&client->dev, "\n");
+
+	memcpy(cmd.args, "\x42\x00", 2);
+	cmd.wlen = 2;
+	cmd.rlen = 12;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret)
+		goto err;
+
+	c->strength.stat[0].scale = FE_SCALE_DECIBEL;
+	c->strength.stat[0].svalue = (s8) cmd.args[3] * 1000;
+
+	schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000));
+	return;
+err:
+	c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+}
+
+static int si2157_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct si2157_config *cfg = client->dev.platform_data;
+	struct dvb_frontend *fe = cfg->fe;
+	struct si2157_dev *dev;
+	struct si2157_cmd cmd;
+	int ret;
+
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev) {
+		ret = -ENOMEM;
+		dev_err(&client->dev, "kzalloc() failed\n");
+		goto err;
+	}
+
+	i2c_set_clientdata(client, dev);
+	dev->fe = cfg->fe;
+	dev->inversion = cfg->inversion;
+	dev->dont_load_firmware = cfg->dont_load_firmware;
+	dev->if_port = cfg->if_port;
+	dev->part_id = (u8)id->driver_data;
+	dev->if_frequency = 5000000; /* default value of property 0x0706 */
+	mutex_init(&dev->i2c_mutex);
+	INIT_DELAYED_WORK(&dev->stat_work, si2157_stat_work);
+
+	/* check if the tuner is there */
+	cmd.wlen = 0;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(client, &cmd);
+	if (ret && ret != -EAGAIN)
+		goto err_kfree;
+
+	memcpy(&fe->ops.tuner_ops, &si2157_ops, sizeof(struct dvb_tuner_ops));
+	fe->tuner_priv = client;
+
+#ifdef CONFIG_MEDIA_CONTROLLER
+	if (cfg->mdev) {
+		dev->mdev = cfg->mdev;
+
+		dev->ent.name = KBUILD_MODNAME;
+		dev->ent.function = MEDIA_ENT_F_TUNER;
+
+		dev->pad[SI2157_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK;
+		dev->pad[SI2157_PAD_RF_INPUT].sig_type = PAD_SIGNAL_ANALOG;
+		dev->pad[SI2157_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE;
+		dev->pad[SI2157_PAD_VID_OUT].sig_type = PAD_SIGNAL_ANALOG;
+		dev->pad[SI2157_PAD_AUD_OUT].flags = MEDIA_PAD_FL_SOURCE;
+		dev->pad[SI2157_PAD_AUD_OUT].sig_type = PAD_SIGNAL_AUDIO;
+
+		ret = media_entity_pads_init(&dev->ent, SI2157_NUM_PADS,
+					     &dev->pad[0]);
+
+		if (ret)
+			goto err_kfree;
+
+		ret = media_device_register_entity(cfg->mdev, &dev->ent);
+		if (ret) {
+			media_entity_cleanup(&dev->ent);
+			goto err_kfree;
+		}
+	}
+#endif
+
+	dev_info(&client->dev, "Silicon Labs Si21%d successfully attached\n",
+		 dev->part_id);
+
+	return 0;
+
+err_kfree:
+	kfree(dev);
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static void si2157_remove(struct i2c_client *client)
+{
+	struct si2157_dev *dev = i2c_get_clientdata(client);
+	struct dvb_frontend *fe = dev->fe;
+
+	dev_dbg(&client->dev, "\n");
+
+	/* stop statistics polling */
+	cancel_delayed_work_sync(&dev->stat_work);
+
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+	if (dev->mdev)
+		media_device_unregister_entity(&dev->ent);
+#endif
+
+	memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
+	fe->tuner_priv = NULL;
+	kfree(dev);
+}
+
+/*
+ * The part_id used here will only be used on buggy devices that don't
+ * accept firmware uploads. Non-buggy devices should just use "si2157" for
+ * all SiLabs TER tuners, as the driver should auto-detect it.
+ */
+static const struct i2c_device_id si2157_id_table[] = {
+	{"si2157", SI2157},
+	{"si2146", SI2146},
+	{"si2141", SI2141},
+	{"si2177", SI2177},
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, si2157_id_table);
+
+static struct i2c_driver si2157_driver = {
+	.driver = {
+		.name		     = "si2157",
+		.suppress_bind_attrs = true,
+	},
+	.probe		= si2157_probe,
+	.remove		= si2157_remove,
+	.id_table	= si2157_id_table,
+};
+
+module_i2c_driver(si2157_driver);
+
+MODULE_DESCRIPTION("Silicon Labs Si2141/Si2146/2147/2148/2157/2158 silicon tuner driver");
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(SI2158_A20_FIRMWARE);
+MODULE_FIRMWARE(SI2141_A10_FIRMWARE);
+MODULE_FIRMWARE(SI2157_A30_FIRMWARE);
+MODULE_FIRMWARE(SI2141_60_FIRMWARE);
+MODULE_FIRMWARE(SI2141_61_FIRMWARE);
+MODULE_FIRMWARE(SI2146_11_FIRMWARE);
+MODULE_FIRMWARE(SI2147_50_FIRMWARE);
+MODULE_FIRMWARE(SI2148_32_FIRMWARE);
+MODULE_FIRMWARE(SI2148_33_FIRMWARE);
+MODULE_FIRMWARE(SI2157_50_FIRMWARE);
+MODULE_FIRMWARE(SI2158_50_FIRMWARE);
+MODULE_FIRMWARE(SI2158_51_FIRMWARE);
+MODULE_FIRMWARE(SI2177_50_FIRMWARE);