[media 5/8] MaxLinear MxL301RF ISDB-T tuner

[info@are.ma]

From: Буди Романто, AreMa Inc <knightrider@are.ma>

Signed-off-by: Буди Романто, AreMa Inc <knightrider@are.ma>
---
 drivers/media/tuners/mxl301rf.c | 220 ++++++++++++++++++++++++++++++++++++++++
 drivers/media/tuners/mxl301rf.h |  23 +++++
 2 files changed, 243 insertions(+)
 create mode 100644 drivers/media/tuners/mxl301rf.c
 create mode 100644 drivers/media/tuners/mxl301rf.h

diff --git a/drivers/media/tuners/mxl301rf.c b/drivers/media/tuners/mxl301rf.c
new file mode 100644
index 0000000..916b06f
--- /dev/null
+++ b/drivers/media/tuners/mxl301rf.c
@@ -0,0 +1,220 @@
+/*
+	Sharp VA4M6JC2103 - Earthsoft PT3 ISDB-T tuner MaxLinear CMOS Hybrid TV MxL301RF
+
+	Copyright (C) Budi Rachmanto, AreMa Inc. <info@are.ma>
+
+	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 "dvb_frontend.h"
+#include "mxl301rf.h"
+
+int mxl301rf_w(struct dvb_frontend *fe, u8 slvadr, const u8 *dat, int len)
+{
+	struct i2c_client	*d	= fe->demodulator_priv;
+	u8			buf[len + 1];
+	struct i2c_msg		msg[] = {
+		{.addr = d->addr,	.flags = 0,	.buf = buf,	.len = len + 1,},
+	};
+
+	buf[0] = slvadr;
+	memcpy(buf + 1, dat, len);
+	return i2c_transfer(d->adapter, msg, 1) == 1 ? 0 : -EIO;
+}
+
+int mxl301rf_w_tuner(struct dvb_frontend *fe, const u8 *dat, int len)
+{
+	u8 buf[len + 1];
+
+	buf[0] = ((struct i2c_client *)fe->tuner_priv)->addr << 1;
+	memcpy(buf + 1, dat, len);
+	return mxl301rf_w(fe, 0xFE, buf, len + 1);
+}
+
+u8 mxl301rf_r(struct dvb_frontend *fe, u8 regadr)
+{
+	struct i2c_client	*d	= fe->demodulator_priv,
+				*t	= fe->tuner_priv;
+	u8	wbuf[]	= {0xFB, regadr},
+		rbuf[]	= {0xFE, (t->addr << 1) | 1, 0};
+	struct i2c_msg msg[] = {
+		{.addr	= d->addr,	.flags	= 0,		.buf	= rbuf,		.len	= 2,},
+		{.addr	= d->addr,	.flags	= I2C_M_RD,	.buf	= rbuf + 2,	.len	= 1,},
+	};
+	mxl301rf_w_tuner(fe, wbuf, sizeof(wbuf));
+	return t->addr && (i2c_transfer(d->adapter, msg, 2) == 2) ? rbuf[2] : 0;
+}
+
+enum mxl301rf_agc {
+	MXL301RF_AGC_AUTO,
+	MXL301RF_AGC_MANUAL,
+};
+
+int mxl301rf_set_agc(struct dvb_frontend *fe, enum mxl301rf_agc agc)
+{
+	u8	dat	= agc == MXL301RF_AGC_AUTO ? 0x40 : 0x00,
+		imsrst	= 0x01 << 6;
+	int	err	= mxl301rf_w(fe, 0x25, &dat, 1);
+
+	dat = 0x4c | (agc == MXL301RF_AGC_AUTO ? 0 : 1);
+	return	err				||
+		mxl301rf_w(fe, 0x23, &dat, 1)	||
+		mxl301rf_w(fe, 0x01, &imsrst, 1);
+}
+
+int mxl301rf_sleep(struct dvb_frontend *fe)
+{
+	u8	buf	= (1 << 7) | (1 << 4),
+		dat[]	= {0x01, 0x00, 0x13, 0x00};
+	int	err	= mxl301rf_set_agc(fe, MXL301RF_AGC_MANUAL);
+
+	if (err)
+		return err;
+	mxl301rf_w_tuner(fe, dat, sizeof(dat));
+	return mxl301rf_w(fe, 0x03, &buf, 1);
+}
+
+int mxl301rf_tune(struct dvb_frontend *fe)
+{
+	struct shf_dvbt {
+		u32	freq,		/* Channel center frequency @ kHz	*/
+			freq_th;	/* Offset frequency threshold @ kHz	*/
+		u8	shf_val,	/* Spur shift value			*/
+			shf_dir;	/* Spur shift direction			*/
+	} shf_dvbt_tab[] = {
+		{ 64500, 500, 0x92, 0x07},
+		{191500, 300, 0xe2, 0x07},
+		{205500, 500, 0x2c, 0x04},
+		{212500, 500, 0x1e, 0x04},
+		{226500, 500, 0xd4, 0x07},
+		{ 99143, 500, 0x9c, 0x07},
+		{173143, 500, 0xd4, 0x07},
+		{191143, 300, 0xd4, 0x07},
+		{207143, 500, 0xce, 0x07},
+		{225143, 500, 0xce, 0x07},
+		{243143, 500, 0xd4, 0x07},
+		{261143, 500, 0xd4, 0x07},
+		{291143, 500, 0xd4, 0x07},
+		{339143, 500, 0x2c, 0x04},
+		{117143, 500, 0x7a, 0x07},
+		{135143, 300, 0x7a, 0x07},
+		{153143, 500, 0x01, 0x07}
+	};
+	u8 rf_dat[] = {
+		0x13, 0x00,	/* abort tune		*/
+		0x3b, 0xc0,
+		0x3b, 0x80,
+		0x10, 0x95,	/* BW			*/
+		0x1a, 0x05,
+		0x61, 0x00,
+		0x62, 0xa0,
+		0x11, 0x40,	/* 2 bytes to store RF	*/
+		0x12, 0x0e,	/* 2 bytes to store RF	*/
+		0x13, 0x01	/* start tune		*/
+	};
+	const u8 idac[] = {
+		0x0d, 0x00,
+		0x0c, 0x67,
+		0x6f, 0x89,
+		0x70, 0x0c,
+		0x6f, 0x8a,
+		0x70, 0x0e,
+		0x6f, 0x8b,
+		0x70, 0x10+12,
+	};
+	u8	dat[20];
+	int	err	= mxl301rf_set_agc(fe, MXL301RF_AGC_MANUAL);
+	u32	freq	= fe->dtv_property_cache.frequency,
+		kHz	= 1000,
+		MHz	= 1000000,
+		dig_rf	= freq / MHz,
+		tmp	= freq % MHz,
+		i,
+		fdiv	= 1000000;
+	unsigned long timeout;
+
+	if (err)
+		return err;
+	for (i = 0; i < 6; i++) {
+		dig_rf <<= 1;
+		fdiv /= 2;
+		if (tmp > fdiv) {
+			tmp -= fdiv;
+			dig_rf++;
+		}
+	}
+	if (tmp > 7812)
+		dig_rf++;
+	rf_dat[2 * 7 + 1]	= (u8)(dig_rf);
+	rf_dat[2 * 8 + 1]	= (u8)(dig_rf >> 8);
+	for (i = 0; i < ARRAY_SIZE(shf_dvbt_tab); i++) {
+		if ((freq >= (shf_dvbt_tab[i].freq - shf_dvbt_tab[i].freq_th) * kHz) &&
+				(freq <= (shf_dvbt_tab[i].freq + shf_dvbt_tab[i].freq_th) * kHz)) {
+			rf_dat[2 * 5 + 1] = shf_dvbt_tab[i].shf_val;
+			rf_dat[2 * 6 + 1] = 0xa0 | shf_dvbt_tab[i].shf_dir;
+			break;
+		}
+	}
+	memcpy(dat, rf_dat, sizeof(rf_dat));
+
+	mxl301rf_w_tuner(fe, dat, 14);
+	msleep_interruptible(1);
+	mxl301rf_w_tuner(fe, dat + 14, 6);
+	msleep_interruptible(1);
+	dat[0] = 0x1a;
+	dat[1] = 0x0d;
+	mxl301rf_w_tuner(fe, dat, 2);
+	mxl301rf_w_tuner(fe, idac, sizeof(idac));
+	timeout = jiffies + msecs_to_jiffies(100);
+	while (time_before(jiffies, timeout)) {
+		if ((mxl301rf_r(fe, 0x16) & 0x0c) == 0x0c && (mxl301rf_r(fe, 0x16) & 0x03) == 0x03)
+			return mxl301rf_set_agc(fe, MXL301RF_AGC_AUTO);
+		msleep_interruptible(1);
+	}
+	return -ETIMEDOUT;
+}
+
+int mxl301rf_wakeup(struct dvb_frontend *fe)
+{
+	u8	buf	= (1 << 7) | (0 << 4),
+		dat[2]	= {0x01, 0x01};
+	int	err	= mxl301rf_w(fe, 0x03, &buf, 1);
+
+	if (err)
+		return err;
+	mxl301rf_w_tuner(fe, dat, sizeof(dat));
+	return 0;
+}
+
+int mxl301rf_probe(struct i2c_client *t, const struct i2c_device_id *id)
+{
+	struct dvb_frontend	*fe	= t->dev.platform_data;
+	u8			d[]	= {0x10, 0x01};
+
+	fe->ops.tuner_ops.set_params	= mxl301rf_tune;
+	fe->ops.tuner_ops.sleep		= mxl301rf_sleep;
+	fe->ops.tuner_ops.init		= mxl301rf_wakeup;
+	return	mxl301rf_w(fe, 0x1c, d, 1)	||
+		mxl301rf_w(fe, 0x1d, d+1, 1);
+}
+
+static struct i2c_device_id mxl301rf_id[] = {
+	{MXL301RF_MODNAME, 0},
+	{},
+};
+MODULE_DEVICE_TABLE(i2c, mxl301rf_id);
+
+static struct i2c_driver mxl301rf_driver = {
+	.driver.name	= mxl301rf_id->name,
+	.probe		= mxl301rf_probe,
+	.id_table	= mxl301rf_id,
+};
+module_i2c_driver(mxl301rf_driver);
+
+MODULE_AUTHOR("Budi Rachmanto, AreMa Inc. <knightrider(@)are.ma>");
+MODULE_DESCRIPTION("Earthsoft PT3 MxL301RF MaxLinear CMOS Hybrid TV ISDB-T tuner driver");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/media/tuners/mxl301rf.h b/drivers/media/tuners/mxl301rf.h
new file mode 100644
index 0000000..32a31b0
--- /dev/null
+++ b/drivers/media/tuners/mxl301rf.h
@@ -0,0 +1,23 @@
+/*
+ * Sharp VA4M6JC2103 - Earthsoft PT3 ISDB-T tuner MaxLinear CMOS Hybrid TV MxL301RF
+ *
+ * Copyright (C) 2014 Budi Rachmanto, AreMa Inc. <info@are.ma>
+ *
+ * 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 MXL301RF_H
+#define MXL301RF_H
+
+#define MXL301RF_MODNAME "mxl301rf"
+
+#endif
+
-- 
2.7.4