ni-buildsystem/patches/kernel/vuplus/3_14_01-10-si2157-Silicon-Labs-Si2157-silicon-tuner-driver.patch

diff --git a/drivers/media/tuners/Kconfig b/drivers/media/tuners/Kconfig
index a128488..22b6b8b 100644
--- a/drivers/media/tuners/Kconfig
+++ b/drivers/media/tuners/Kconfig
@@ -222,6 +222,13 @@ config MEDIA_TUNER_TUA9001
 	help
 	  Infineon TUA 9001 silicon tuner driver.
 
+config MEDIA_TUNER_SI2157
+	tristate "Silicon Labs Si2157 silicon tuner"
+	depends on MEDIA_SUPPORT && I2C
+	default m if !MEDIA_SUBDRV_AUTOSELECT
+	help
+	  Silicon Labs Si2157 silicon tuner driver.
+
 config MEDIA_TUNER_IT913X
 	tristate "ITE Tech IT913x silicon tuner"
 	depends on MEDIA_SUPPORT && I2C
diff --git a/drivers/media/tuners/Makefile b/drivers/media/tuners/Makefile
index efe82a9..a6ff0c6 100644
--- a/drivers/media/tuners/Makefile
+++ b/drivers/media/tuners/Makefile
@@ -31,5 +31,6 @@ obj-$(CONFIG_MEDIA_TUNER_TDA18212) += tda18212.o
 obj-$(CONFIG_MEDIA_TUNER_E4000) += e4000.o
 obj-$(CONFIG_MEDIA_TUNER_FC2580) += fc2580.o
 obj-$(CONFIG_MEDIA_TUNER_TUA9001) += tua9001.o
+obj-$(CONFIG_MEDIA_TUNER_SI2157) += si2157.o
 obj-$(CONFIG_MEDIA_TUNER_M88TS2022) += m88ts2022.o
 obj-$(CONFIG_MEDIA_TUNER_FC0011) += fc0011.o
diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c
new file mode 100644
index 0000000..953f2e3
--- /dev/null
+++ b/drivers/media/tuners/si2157.c
@@ -0,0 +1,401 @@
+/*
+ * Silicon Labs Si2147/2148/2157/2158 silicon tuner driver
+ *
+ * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ */
+
+#include "si2157_priv.h"
+
+static const struct dvb_tuner_ops si2157_ops;
+
+/* execute firmware command */
+static int si2157_cmd_execute(struct si2157 *s, struct si2157_cmd *cmd)
+{
+	int ret;
+	unsigned long timeout;
+
+	mutex_lock(&s->i2c_mutex);
+
+	if (cmd->wlen) {
+		/* write cmd and args for firmware */
+		ret = i2c_master_send(s->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(s->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(&s->client->dev, "cmd execution took %d ms\n",
+				jiffies_to_msecs(jiffies) -
+				(jiffies_to_msecs(timeout) - TIMEOUT));
+
+		if (!((cmd->args[0] >> 7) & 0x01)) {
+			ret = -ETIMEDOUT;
+			goto err_mutex_unlock;
+		}
+	}
+
+	ret = 0;
+
+err_mutex_unlock:
+	mutex_unlock(&s->i2c_mutex);
+	if (ret)
+		goto err;
+
+	return 0;
+err:
+	dev_dbg(&s->client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2157_init(struct dvb_frontend *fe)
+{
+	struct si2157 *s = fe->tuner_priv;
+	int ret, len, remaining;
+	struct si2157_cmd cmd;
+	const struct firmware *fw = NULL;
+	u8 *fw_file;
+	unsigned int chip_id;
+
+	dev_dbg(&s->client->dev, "\n");
+
+	if (s->fw_loaded)
+		goto warm;
+
+	/* power up */
+	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(s, &cmd);
+	if (ret)
+		goto err;
+
+	/* query chip revision */
+	memcpy(cmd.args, "\x02", 1);
+	cmd.wlen = 1;
+	cmd.rlen = 13;
+	ret = si2157_cmd_execute(s, &cmd);
+	if (ret)
+		goto err;
+
+	chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
+			cmd.args[4] << 0;
+
+	#define SI2158_A20 ('A' << 24 | 58 << 16 | '2' << 8 | '0' << 0)
+	#define SI2148_A20 ('A' << 24 | 48 << 16 | '2' << 8 | '0' << 0)
+	#define SI2157_A30 ('A' << 24 | 57 << 16 | '3' << 8 | '0' << 0)
+	#define SI2147_A30 ('A' << 24 | 47 << 16 | '3' << 8 | '0' << 0)
+
+	switch (chip_id) {
+	case SI2158_A20:
+	case SI2148_A20:
+		fw_file = SI2158_A20_FIRMWARE;
+		break;
+	case SI2157_A30:
+	case SI2147_A30:
+		goto skip_fw_download;
+		break;
+	default:
+		dev_err(&s->client->dev,
+				"unknown chip version Si21%d-%c%c%c\n",
+				cmd.args[2], cmd.args[1],
+				cmd.args[3], cmd.args[4]);
+		ret = -EINVAL;
+		goto err;
+	}
+
+	/* cold state - try to download firmware */
+	dev_info(&s->client->dev, "found a '%s' in cold state\n",
+			si2157_ops.info.name);
+
+	/* request the firmware, this will block and timeout */
+	ret = request_firmware(&fw, fw_file, &s->client->dev);
+	if (ret) {
+		dev_err(&s->client->dev, "firmware file '%s' not found\n",
+				fw_file);
+		goto err;
+	}
+
+	/* firmware should be n chunks of 17 bytes */
+	if (fw->size % 17 != 0) {
+		dev_err(&s->client->dev, "firmware file '%s' is invalid\n",
+				fw_file);
+		ret = -EINVAL;
+		goto err;
+	}
+
+	dev_info(&s->client->dev, "downloading firmware from file '%s'\n",
+			fw_file);
+
+	for (remaining = fw->size; remaining > 0; remaining -= 17) {
+		len = fw->data[fw->size - remaining];
+		memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
+		cmd.wlen = len;
+		cmd.rlen = 1;
+		ret = si2157_cmd_execute(s, &cmd);
+		if (ret) {
+			dev_err(&s->client->dev,
+					"firmware download failed=%d\n",
+					ret);
+			goto err;
+		}
+	}
+
+	release_firmware(fw);
+	fw = NULL;
+
+skip_fw_download:
+	/* reboot the tuner with new firmware? */
+	memcpy(cmd.args, "\x01\x01", 2);
+	cmd.wlen = 2;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(s, &cmd);
+	if (ret)
+		goto err;
+
+	s->fw_loaded = true;
+
+warm:
+	s->active = true;
+	return 0;
+
+err:
+	if (fw)
+		release_firmware(fw);
+
+	dev_dbg(&s->client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2157_sleep(struct dvb_frontend *fe)
+{
+	struct si2157 *s = fe->tuner_priv;
+	int ret;
+	struct si2157_cmd cmd;
+
+	dev_dbg(&s->client->dev, "\n");
+
+	s->active = false;
+
+	/* standby */
+	memcpy(cmd.args, "\x16\x00", 2);
+	cmd.wlen = 2;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(s, &cmd);
+	if (ret)
+		goto err;
+
+	return 0;
+err:
+	dev_dbg(&s->client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2157_set_params(struct dvb_frontend *fe)
+{
+	struct si2157 *s = fe->tuner_priv;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	int ret;
+	struct si2157_cmd cmd;
+	u8 bandwidth, delivery_system;
+
+	dev_dbg(&s->client->dev,
+			"delivery_system=%d frequency=%u bandwidth_hz=%u\n",
+			c->delivery_system, c->frequency,
+			c->bandwidth_hz);
+
+	if (!s->active) {
+		ret = -EAGAIN;
+		goto err;
+	}
+
+	if (c->bandwidth_hz <= 6000000)
+		bandwidth = 0x06;
+	else if (c->bandwidth_hz <= 7000000)
+		bandwidth = 0x07;
+	else if (c->bandwidth_hz <= 8000000)
+		bandwidth = 0x08;
+	else
+		bandwidth = 0x0f;
+
+	switch (c->delivery_system) {
+	case SYS_ATSC:
+			delivery_system = 0x00;
+			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:
+			delivery_system = 0x30;
+			break;
+	default:
+			ret = -EINVAL;
+			goto err;
+	}
+
+	memcpy(cmd.args, "\x14\x00\x03\x07\x00\x00", 6);
+	cmd.args[4] = delivery_system | bandwidth;
+	if (s->inversion)
+		cmd.args[5] = 0x01;
+	cmd.wlen = 6;
+	cmd.rlen = 4;
+	ret = si2157_cmd_execute(s, &cmd);
+	if (ret)
+		goto err;
+
+	memcpy(cmd.args, "\x14\x00\x02\x07\x01\x00", 6);
+	cmd.wlen = 6;
+	cmd.rlen = 4;
+	ret = si2157_cmd_execute(s, &cmd);
+	if (ret)
+		goto err;
+
+	/* set 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(s, &cmd);
+	if (ret)
+		goto err;
+
+	return 0;
+err:
+	dev_dbg(&s->client->dev, "failed=%d\n", ret);
+	return ret;
+}
+
+static int si2157_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	*frequency = 5000000; /* default value of property 0x0706 */
+	return 0;
+}
+
+static const struct dvb_tuner_ops si2157_ops = {
+	.info = {
+		.name           = "Silicon Labs Si2157/Si2158",
+		.frequency_min  = 110000000,
+		.frequency_max  = 862000000,
+	},
+
+	.init = si2157_init,
+	.sleep = si2157_sleep,
+	.set_params = si2157_set_params,
+	.get_if_frequency = si2157_get_if_frequency,
+};
+
+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 *s;
+	struct si2157_cmd cmd;
+	int ret;
+
+	s = kzalloc(sizeof(struct si2157), GFP_KERNEL);
+	if (!s) {
+		ret = -ENOMEM;
+		dev_err(&client->dev, "kzalloc() failed\n");
+		goto err;
+	}
+
+	s->client = client;
+	s->fe = cfg->fe;
+	s->inversion = cfg->inversion;
+	s->fw_loaded = false;
+	mutex_init(&s->i2c_mutex);
+
+	/* check if the tuner is there */
+	cmd.wlen = 0;
+	cmd.rlen = 1;
+	ret = si2157_cmd_execute(s, &cmd);
+	if (ret)
+		goto err;
+
+	fe->tuner_priv = s;
+	memcpy(&fe->ops.tuner_ops, &si2157_ops,
+			sizeof(struct dvb_tuner_ops));
+
+	i2c_set_clientdata(client, s);
+
+	dev_info(&s->client->dev,
+			"Silicon Labs Si2147/2148/2157/Si2158 successfully attached\n");
+	return 0;
+err:
+	dev_dbg(&client->dev, "failed=%d\n", ret);
+	kfree(s);
+
+	return ret;
+}
+
+static int si2157_remove(struct i2c_client *client)
+{
+	struct si2157 *s = i2c_get_clientdata(client);
+	struct dvb_frontend *fe = s->fe;
+
+	dev_dbg(&client->dev, "\n");
+
+	memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
+	fe->tuner_priv = NULL;
+	kfree(s);
+
+	return 0;
+}
+
+static const struct i2c_device_id si2157_id[] = {
+	{"si2157", 0},
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, si2157_id);
+
+static struct i2c_driver si2157_driver = {
+	.driver = {
+		.owner	= THIS_MODULE,
+		.name	= "si2157",
+	},
+	.probe		= si2157_probe,
+	.remove		= si2157_remove,
+	.id_table	= si2157_id,
+};
+
+module_i2c_driver(si2157_driver);
+
+MODULE_DESCRIPTION("Silicon Labs Si2147/2148/2157/Si2158 silicon tuner driver");
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(SI2158_A20_FIRMWARE);
diff --git a/drivers/media/tuners/si2157.h b/drivers/media/tuners/si2157.h
new file mode 100644
index 0000000..5de47d4
--- /dev/null
+++ b/drivers/media/tuners/si2157.h
@@ -0,0 +1,39 @@
+/*
+ * Silicon Labs Si2147/2148/2157/2158 silicon tuner driv
+ *
+ * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ */
+
+#ifndef SI2157_H
+#define SI2157_H
+
+#include <linux/kconfig.h>
+#include "dvb_frontend.h"
+
+/*
+ * I2C address
+ * 0x60
+ */
+struct si2157_config {
+	/*
+	 * frontend
+	 */
+	struct dvb_frontend *fe;
+
+	/*
+	 * Spectral Inversion
+	 */
+	bool inversion;
+};
+
+#endif
diff --git a/drivers/media/tuners/si2157_priv.h b/drivers/media/tuners/si2157_priv.h
new file mode 100644
index 0000000..6018851
--- /dev/null
+++ b/drivers/media/tuners/si2157_priv.h
@@ -0,0 +1,43 @@
+/*
+ * Silicon Labs Si2147/2148/2157/2158 silicon tuner driver
+ *
+ * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ */
+
+#ifndef SI2157_PRIV_H
+#define SI2157_PRIV_H
+
+#include <linux/firmware.h>
+#include "si2157.h"
+
+/* state struct */
+struct si2157 {
+	struct mutex i2c_mutex;
+	struct i2c_client *client;
+	struct dvb_frontend *fe;
+	bool active;
+	bool fw_loaded;
+	bool inversion;
+};
+
+/* firmare command struct */
+#define SI2157_ARGLEN      30
+struct si2157_cmd {
+	u8 args[SI2157_ARGLEN];
+	unsigned wlen;
+	unsigned rlen;
+};
+
+#define SI2158_A20_FIRMWARE "dvb-tuner-si2158-a20-01.fw"
+
+#endif