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r: 65690
b: refs/heads/master
c: f47623a
h: refs/heads/master
v: v3
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Steven Toth authored and Mauro Carvalho Chehab committed Oct 10, 2007
1 parent 4daa13a commit 0ee9ac6
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 03b7612336560c6799852acaaaeac70e1f00e483
refs/heads/master: f47623a04dab402fb2c18fe516a174bc02005629
7 changes: 7 additions & 0 deletions trunk/drivers/media/dvb/frontends/Kconfig
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Expand Up @@ -329,6 +329,13 @@ config DVB_TUNER_MT2266
help
A driver for the silicon baseband tuner MT2266 from Microtune.

config DVB_TUNER_MT2131
tristate "Microtune MT2131 silicon tuner"
depends on I2C
default m if DVB_FE_CUSTOMISE
help
A driver for the silicon baseband tuner MT2131 from Microtune.

comment "Miscellaneous devices"
depends on DVB_CORE

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1 change: 1 addition & 0 deletions trunk/drivers/media/dvb/frontends/Makefile
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Expand Up @@ -43,3 +43,4 @@ obj-$(CONFIG_DVB_TUNER_MT2060) += mt2060.o
obj-$(CONFIG_DVB_TUNER_MT2266) += mt2266.o
obj-$(CONFIG_DVB_TUNER_QT1010) += qt1010.o
obj-$(CONFIG_DVB_TUA6100) += tua6100.o
obj-$(CONFIG_DVB_TUNER_MT2131) += mt2131.o
308 changes: 308 additions & 0 deletions trunk/drivers/media/dvb/frontends/mt2131.c
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/*
* Driver for Microtune MT2131 "QAM/8VSB single chip tuner"
*
* Copyright (c) 2006 Steven Toth <stoth@hauppauge.com>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/delay.h>
#include <linux/dvb/frontend.h>
#include <linux/i2c.h>

#include "dvb_frontend.h"

#include "mt2131.h"
#include "mt2131_priv.h"

static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");

#define dprintk(level,fmt, arg...) if (debug >= level) \
printk(KERN_INFO "%s: " fmt, "mt2131", ## arg)

static u8 mt2131_config1[] = {
0x01,
0x50, 0x00, 0x50, 0x80, 0x00, 0x49, 0xfa, 0x88,
0x08, 0x77, 0x41, 0x04, 0x00, 0x00, 0x00, 0x32,
0x7f, 0xda, 0x4c, 0x00, 0x10, 0xaa, 0x78, 0x80,
0xff, 0x68, 0xa0, 0xff, 0xdd, 0x00, 0x00
};

static u8 mt2131_config2[] = {
0x10,
0x7f, 0xc8, 0x0a, 0x5f, 0x00, 0x04
};

static int mt2131_readreg(struct mt2131_priv *priv, u8 reg, u8 *val)
{
struct i2c_msg msg[2] = {
{ .addr = priv->cfg->i2c_address, .flags = 0, .buf = &reg, .len = 1 },
{ .addr = priv->cfg->i2c_address, .flags = I2C_M_RD, .buf = val, .len = 1 },
};

if (i2c_transfer(priv->i2c, msg, 2) != 2) {
printk(KERN_WARNING "mt2131 I2C read failed\n");
return -EREMOTEIO;
}
return 0;
}

static int mt2131_writereg(struct mt2131_priv *priv, u8 reg, u8 val)
{
u8 buf[2] = { reg, val };
struct i2c_msg msg = { .addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = 2 };

if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
printk(KERN_WARNING "mt2131 I2C write failed\n");
return -EREMOTEIO;
}
return 0;
}

static int mt2131_writeregs(struct mt2131_priv *priv,u8 *buf, u8 len)
{
struct i2c_msg msg = { .addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = len };

if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
printk(KERN_WARNING "mt2131 I2C write failed (len=%i)\n",(int)len);
return -EREMOTEIO;
}
return 0;
}

static int mt2131_set_gpo(struct dvb_frontend *fe, u8 val)
{
struct mt2131_priv *priv = fe->tuner_priv;
u8 v;

mt2131_readreg(priv, 0x07, &v);
mt2131_writereg(priv, 0x07, (v & 0xfe) | (val & 0x01));

return 0;
}

static int mt2131_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)
{
struct mt2131_priv *priv;
int ret=0, i;
u32 freq;
u8 if_band_center;
u32 f_lo1,f_lo2;
u32 div1,num1,div2,num2;
u8 b[8];
u8 lockval = 0;

priv = fe->tuner_priv;
if (fe->ops.info.type == FE_OFDM)
priv->bandwidth = params->u.ofdm.bandwidth;
else
priv->bandwidth = 0;

freq = params->frequency / 1000; // Hz -> kHz
dprintk(1, "%s() freq=%d\n", __FUNCTION__, freq);

f_lo1 = freq + MT2131_IF1 * 1000;
f_lo1 = (f_lo1 / 250) * 250;
f_lo2 = f_lo1 - freq - MT2131_IF2;

priv->frequency = (f_lo1 - f_lo2 - MT2131_IF2) * 1000,

/* Frequency LO1 = 16MHz * (DIV1 + NUM1/8192 ) */
num1 = f_lo1 * 64 / (MT2131_FREF / 128);
div1 = num1 / 8192;
num1 &= 0x1fff;

/* Frequency LO2 = 16MHz * (DIV2 + NUM2/8192 ) */
num2 = f_lo2 * 64 / (MT2131_FREF / 128);
div2 = num2 / 8192;
num2 &= 0x1fff;

if (freq <= 82500) if_band_center = 0x00; else
if (freq <= 137500) if_band_center = 0x01; else
if (freq <= 192500) if_band_center = 0x02; else
if (freq <= 247500) if_band_center = 0x03; else
if (freq <= 302500) if_band_center = 0x04; else
if (freq <= 357500) if_band_center = 0x05; else
if (freq <= 412500) if_band_center = 0x06; else
if (freq <= 467500) if_band_center = 0x07; else
if (freq <= 522500) if_band_center = 0x08; else
if (freq <= 577500) if_band_center = 0x09; else
if (freq <= 632500) if_band_center = 0x0A; else
if (freq <= 687500) if_band_center = 0x0B; else
if (freq <= 742500) if_band_center = 0x0C; else
if (freq <= 797500) if_band_center = 0x0D; else
if (freq <= 852500) if_band_center = 0x0E; else
if (freq <= 907500) if_band_center = 0x0F; else
if (freq <= 962500) if_band_center = 0x10; else
if (freq <= 1017500) if_band_center = 0x11; else
if (freq <= 1072500) if_band_center = 0x12; else if_band_center = 0x13;

b[0] = 1;
b[1] = (num1 >> 5) & 0xFF;
b[2] = (num1 & 0x1F);
b[3] = div1;
b[4] = (num2 >> 5) & 0xFF;
b[5] = num2 & 0x1F;
b[6] = div2;

dprintk(1, "IF1: %dMHz IF2: %dMHz\n", MT2131_IF1, MT2131_IF2);
dprintk(1, "PLL freq=%dkHz band=%d\n", (int)freq, (int)if_band_center);
dprintk(1, "PLL f_lo1=%dkHz f_lo2=%dkHz\n", (int)f_lo1, (int)f_lo2);
dprintk(1, "PLL div1=%d num1=%d div2=%d num2=%d\n",
(int)div1, (int)num1, (int)div2, (int)num2);
dprintk(1, "PLL [1..6]: %2x %2x %2x %2x %2x %2x\n",
(int)b[1], (int)b[2], (int)b[3], (int)b[4], (int)b[5],
(int)b[6]);

ret = mt2131_writeregs(priv,b,7);
if (ret < 0)
return ret;

mt2131_writereg(priv, 0x0b, if_band_center);

/* Wait for lock */
i = 0;
do {
mt2131_readreg(priv, 0x08, &lockval);
if ((lockval & 0x88) == 0x88)
break;
msleep(4);
i++;
} while (i < 10);

return ret;
}

static int mt2131_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct mt2131_priv *priv = fe->tuner_priv;
dprintk(1, "%s()\n", __FUNCTION__);
*frequency = priv->frequency;
return 0;
}

static int mt2131_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
{
struct mt2131_priv *priv = fe->tuner_priv;
dprintk(1, "%s()\n", __FUNCTION__);
*bandwidth = priv->bandwidth;
return 0;
}

static int mt2131_get_status(struct dvb_frontend *fe, u32 *status)
{
struct mt2131_priv *priv = fe->tuner_priv;
u8 lock_status = 0;
u8 afc_status = 0;

*status = 0;

mt2131_readreg(priv, 0x08, &lock_status);
if ((lock_status & 0x88) == 0x88)
*status = TUNER_STATUS_LOCKED;

mt2131_readreg(priv, 0x09, &afc_status);
dprintk(1, "%s() - LO Status = 0x%x, AFC Status = 0x%x\n",
__FUNCTION__, lock_status, afc_status);

return 0;
}

static int mt2131_init(struct dvb_frontend *fe)
{
struct mt2131_priv *priv = fe->tuner_priv;
int ret;
dprintk(1, "%s()\n", __FUNCTION__);

if ((ret = mt2131_writeregs(priv, mt2131_config1, sizeof(mt2131_config1))) < 0)
return ret;

mt2131_writereg(priv, 0x0b, 0x09);
mt2131_writereg(priv, 0x15, 0x47);
mt2131_writereg(priv, 0x07, 0xf2);
mt2131_writereg(priv, 0x0b, 0x01);

if ((ret = mt2131_writeregs(priv, mt2131_config2, sizeof(mt2131_config2))) < 0)
return ret;

return ret;
}

static int mt2131_release(struct dvb_frontend *fe)
{
dprintk(1, "%s()\n", __FUNCTION__);
kfree(fe->tuner_priv);
fe->tuner_priv = NULL;
return 0;
}

static const struct dvb_tuner_ops mt2131_tuner_ops = {
.info = {
.name = "Microtune MT2131",
.frequency_min = 48000000,
.frequency_max = 860000000,
.frequency_step = 50000,
},

.release = mt2131_release,
.init = mt2131_init,

.set_params = mt2131_set_params,
.get_frequency = mt2131_get_frequency,
.get_bandwidth = mt2131_get_bandwidth,
.get_status = mt2131_get_status
};

struct dvb_frontend * mt2131_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2131_config *cfg, u16 if1)
{
struct mt2131_priv *priv = NULL;
u8 id = 0;

dprintk(1, "%s()\n", __FUNCTION__);

priv = kzalloc(sizeof(struct mt2131_priv), GFP_KERNEL);
if (priv == NULL)
return NULL;

priv->cfg = cfg;
priv->bandwidth = 6000000; /* 6MHz */
priv->i2c = i2c;

if (mt2131_readreg(priv, 0, &id) != 0) {
kfree(priv);
return NULL;
}
if ( (id != 0x3E) && (id != 0x3F) ) {
printk(KERN_ERR "MT2131: Device not found at addr 0x%02x\n", cfg->i2c_address);
kfree(priv);
return NULL;
}

printk(KERN_INFO "MT2131: successfully identified at address 0x%02x\n", cfg->i2c_address);
memcpy(&fe->ops.tuner_ops, &mt2131_tuner_ops, sizeof(struct dvb_tuner_ops));

fe->tuner_priv = priv;
return fe;
}
EXPORT_SYMBOL(mt2131_attach);

MODULE_AUTHOR("Steven Toth");
MODULE_DESCRIPTION("Microtune MT2131 silicon tuner driver");
MODULE_LICENSE("GPL");
49 changes: 49 additions & 0 deletions trunk/drivers/media/dvb/frontends/mt2131.h
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@@ -0,0 +1,49 @@
/*
* Driver for Microtune MT2131 "QAM/8VSB single chip tuner"
*
* Copyright (c) 2006 Steven Toth <stoth@hauppauge.com>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __MT2131_H__
#define __MT2131_H__

struct dvb_frontend;
struct i2c_adapter;

struct mt2131_config {
u8 i2c_address;
u8 clock_out; /* 0 = off, 1 = CLK/4, 2 = CLK/2, 3 = CLK/1 */
};

#if defined(CONFIG_DVB_TUNER_MT2131) || defined(CONFIG_DVB_TUNER_MT2131_MODULE)
extern struct dvb_frontend* mt2131_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c,
struct mt2131_config *cfg,
u16 if1);
#else
static inline struct dvb_frontend* mt2131_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c,
struct mt2131_config *cfg,
u16 if1)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
return NULL;
}
#endif // CONFIG_DVB_TUNER_MT2131

#endif // __MT2131_H__
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