Initial import

1 files changed, 294 insertions, 0 deletions

diff --git a/drivers/media/tuners/tua9001.c b/drivers/media/tuners/tua9001.c
new file mode 100644
index 000000000..83a6240f6
--- /dev/null
+++ b/drivers/media/tuners/tua9001.c
@@ -0,0 +1,294 @@
+/*
+ * Infineon TUA 9001 silicon tuner driver
+ *
+ * Copyright (C) 2009 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.
+ *
+ *    You should have received a copy of the GNU General Public License along
+ *    with this program; if not, write to the Free Software Foundation, Inc.,
+ *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "tua9001.h"
+#include "tua9001_priv.h"
+
+/* write register */
+static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val)
+{
+	int ret;
+	u8 buf[3] = { reg, (val >> 8) & 0xff, (val >> 0) & 0xff };
+	struct i2c_msg msg[1] = {
+		{
+			.addr = priv->cfg->i2c_addr,
+			.flags = 0,
+			.len = sizeof(buf),
+			.buf = buf,
+		}
+	};
+
+	ret = i2c_transfer(priv->i2c, msg, 1);
+	if (ret == 1) {
+		ret = 0;
+	} else {
+		dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x\n",
+				KBUILD_MODNAME, ret, reg);
+		ret = -EREMOTEIO;
+	}
+
+	return ret;
+}
+
+static int tua9001_release(struct dvb_frontend *fe)
+{
+	struct tua9001_priv *priv = fe->tuner_priv;
+	int ret = 0;
+
+	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+
+	if (fe->callback)
+		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+				TUA9001_CMD_CEN, 0);
+
+	kfree(fe->tuner_priv);
+	fe->tuner_priv = NULL;
+
+	return ret;
+}
+
+static int tua9001_init(struct dvb_frontend *fe)
+{
+	struct tua9001_priv *priv = fe->tuner_priv;
+	int ret = 0;
+	u8 i;
+	struct reg_val data[] = {
+		{ 0x1e, 0x6512 },
+		{ 0x25, 0xb888 },
+		{ 0x39, 0x5460 },
+		{ 0x3b, 0x00c0 },
+		{ 0x3a, 0xf000 },
+		{ 0x08, 0x0000 },
+		{ 0x32, 0x0030 },
+		{ 0x41, 0x703a },
+		{ 0x40, 0x1c78 },
+		{ 0x2c, 0x1c00 },
+		{ 0x36, 0xc013 },
+		{ 0x37, 0x6f18 },
+		{ 0x27, 0x0008 },
+		{ 0x2a, 0x0001 },
+		{ 0x34, 0x0a40 },
+	};
+
+	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+
+	if (fe->callback) {
+		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+				TUA9001_CMD_RESETN, 0);
+		if (ret < 0)
+			goto err;
+	}
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
+
+	for (i = 0; i < ARRAY_SIZE(data); i++) {
+		ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
+		if (ret < 0)
+			goto err_i2c_gate_ctrl;
+	}
+
+err_i2c_gate_ctrl:
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
+err:
+	if (ret < 0)
+		dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
+
+	return ret;
+}
+
+static int tua9001_sleep(struct dvb_frontend *fe)
+{
+	struct tua9001_priv *priv = fe->tuner_priv;
+	int ret = 0;
+
+	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+
+	if (fe->callback)
+		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+				TUA9001_CMD_RESETN, 1);
+
+	if (ret < 0)
+		dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
+
+	return ret;
+}
+
+static int tua9001_set_params(struct dvb_frontend *fe)
+{
+	struct tua9001_priv *priv = fe->tuner_priv;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	int ret = 0, i;
+	u16 val;
+	u32 frequency;
+	struct reg_val data[2];
+
+	dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
+			"bandwidth_hz=%d\n", __func__,
+			c->delivery_system, c->frequency, c->bandwidth_hz);
+
+	switch (c->delivery_system) {
+	case SYS_DVBT:
+		switch (c->bandwidth_hz) {
+		case 8000000:
+			val  = 0x0000;
+			break;
+		case 7000000:
+			val  = 0x1000;
+			break;
+		case 6000000:
+			val  = 0x2000;
+			break;
+		case 5000000:
+			val  = 0x3000;
+			break;
+		default:
+			ret = -EINVAL;
+			goto err;
+		}
+		break;
+	default:
+		ret = -EINVAL;
+		goto err;
+	}
+
+	data[0].reg = 0x04;
+	data[0].val = val;
+
+	frequency = (c->frequency - 150000000);
+	frequency /= 100;
+	frequency *= 48;
+	frequency /= 10000;
+
+	data[1].reg = 0x1f;
+	data[1].val = frequency;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
+
+	if (fe->callback) {
+		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+				TUA9001_CMD_RXEN, 0);
+		if (ret < 0)
+			goto err_i2c_gate_ctrl;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(data); i++) {
+		ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
+		if (ret < 0)
+			goto err_i2c_gate_ctrl;
+	}
+
+	if (fe->callback) {
+		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+				TUA9001_CMD_RXEN, 1);
+		if (ret < 0)
+			goto err_i2c_gate_ctrl;
+	}
+
+err_i2c_gate_ctrl:
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
+err:
+	if (ret < 0)
+		dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
+
+	return ret;
+}
+
+static int tua9001_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct tua9001_priv *priv = fe->tuner_priv;
+
+	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+
+	*frequency = 0; /* Zero-IF */
+
+	return 0;
+}
+
+static const struct dvb_tuner_ops tua9001_tuner_ops = {
+	.info = {
+		.name           = "Infineon TUA 9001",
+
+		.frequency_min  = 170000000,
+		.frequency_max  = 862000000,
+		.frequency_step = 0,
+	},
+
+	.release = tua9001_release,
+
+	.init = tua9001_init,
+	.sleep = tua9001_sleep,
+	.set_params = tua9001_set_params,
+
+	.get_if_frequency = tua9001_get_if_frequency,
+};
+
+struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
+		struct i2c_adapter *i2c, struct tua9001_config *cfg)
+{
+	struct tua9001_priv *priv = NULL;
+	int ret;
+
+	priv = kzalloc(sizeof(struct tua9001_priv), GFP_KERNEL);
+	if (priv == NULL)
+		return NULL;
+
+	priv->cfg = cfg;
+	priv->i2c = i2c;
+
+	if (fe->callback) {
+		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+				TUA9001_CMD_CEN, 1);
+		if (ret < 0)
+			goto err;
+
+		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+				TUA9001_CMD_RXEN, 0);
+		if (ret < 0)
+			goto err;
+
+		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+				TUA9001_CMD_RESETN, 1);
+		if (ret < 0)
+			goto err;
+	}
+
+	dev_info(&priv->i2c->dev,
+			"%s: Infineon TUA 9001 successfully attached\n",
+			KBUILD_MODNAME);
+
+	memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
+			sizeof(struct dvb_tuner_ops));
+
+	fe->tuner_priv = priv;
+	return fe;
+err:
+	dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
+	kfree(priv);
+	return NULL;
+}
+EXPORT_SYMBOL(tua9001_attach);
+
+MODULE_DESCRIPTION("Infineon TUA 9001 silicon tuner driver");
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_LICENSE("GPL");