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kernel-ark/drivers/media/common/tuners/tda827x.c
Mauro Carvalho Chehab 92d90f1a57 V4L/DVB (9774): tda827x: fix returned frequency 
Probably due to a removed code, tda827x were doing some wrong calculus at the
returned frequency. I suspect that the original idea were to return the
programmed divisor converted into frequency again.

However, the current code is sometimes multiplying the programmed frequency by
62500, and, on other cases, like radio, it dividing it by 1000.

Instead of doing such math, let's just store the frequency value as requested by
the caller module.

Cc: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30 09:38:18 -02:00

856 lines
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/*
*
* (c) 2005 Hartmut Hackmann
* (c) 2007 Michael Krufky
*
* 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 <asm/types.h>
#include <linux/dvb/frontend.h>
#include <linux/videodev2.h>
#include "tda827x.h"
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
#define dprintk(args...) \
do { \
if (debug) printk(KERN_DEBUG "tda827x: " args); \
} while (0)
struct tda827x_priv {
int i2c_addr;
struct i2c_adapter *i2c_adap;
struct tda827x_config *cfg;
unsigned int sgIF;
unsigned char lpsel;
u32 frequency;
u32 bandwidth;
};
static void tda827x_set_std(struct dvb_frontend *fe,
struct analog_parameters *params)
{
struct tda827x_priv *priv = fe->tuner_priv;
char *mode;
priv->lpsel = 0;
if (params->std & V4L2_STD_MN) {
priv->sgIF = 92;
priv->lpsel = 1;
mode = "MN";
} else if (params->std & V4L2_STD_B) {
priv->sgIF = 108;
mode = "B";
} else if (params->std & V4L2_STD_GH) {
priv->sgIF = 124;
mode = "GH";
} else if (params->std & V4L2_STD_PAL_I) {
priv->sgIF = 124;
mode = "I";
} else if (params->std & V4L2_STD_DK) {
priv->sgIF = 124;
mode = "DK";
} else if (params->std & V4L2_STD_SECAM_L) {
priv->sgIF = 124;
mode = "L";
} else if (params->std & V4L2_STD_SECAM_LC) {
priv->sgIF = 20;
mode = "LC";
} else {
priv->sgIF = 124;
mode = "xx";
}
if (params->mode == V4L2_TUNER_RADIO) {
priv->sgIF = 88; /* if frequency is 5.5 MHz */
dprintk("setting tda827x to radio FM\n");
} else
dprintk("setting tda827x to system %s\n", mode);
}
/* ------------------------------------------------------------------ */
struct tda827x_data {
u32 lomax;
u8 spd;
u8 bs;
u8 bp;
u8 cp;
u8 gc3;
u8 div1p5;
};
static const struct tda827x_data tda827x_table[] = {
{ .lomax = 62000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
{ .lomax = 66000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
{ .lomax = 76000000, .spd = 3, .bs = 1, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
{ .lomax = 84000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
{ .lomax = 93000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 98000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 109000000, .spd = 3, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 123000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
{ .lomax = 133000000, .spd = 2, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
{ .lomax = 151000000, .spd = 2, .bs = 1, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 154000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 181000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 0, .div1p5 = 0},
{ .lomax = 185000000, .spd = 2, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 217000000, .spd = 2, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 244000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
{ .lomax = 265000000, .spd = 1, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
{ .lomax = 302000000, .spd = 1, .bs = 1, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 324000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 370000000, .spd = 1, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 454000000, .spd = 1, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 493000000, .spd = 0, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
{ .lomax = 530000000, .spd = 0, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
{ .lomax = 554000000, .spd = 0, .bs = 1, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
{ .lomax = 604000000, .spd = 0, .bs = 1, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
{ .lomax = 696000000, .spd = 0, .bs = 2, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
{ .lomax = 740000000, .spd = 0, .bs = 2, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
{ .lomax = 820000000, .spd = 0, .bs = 3, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
{ .lomax = 865000000, .spd = 0, .bs = 3, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
{ .lomax = 0, .spd = 0, .bs = 0, .bp = 0, .cp = 0, .gc3 = 0, .div1p5 = 0}
};
static int tda827xo_set_params(struct dvb_frontend *fe,
struct dvb_frontend_parameters *params)
{
struct tda827x_priv *priv = fe->tuner_priv;
u8 buf[14];
struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
.buf = buf, .len = sizeof(buf) };
int i, tuner_freq, if_freq;
u32 N;
dprintk("%s:\n", __func__);
switch (params->u.ofdm.bandwidth) {
case BANDWIDTH_6_MHZ:
if_freq = 4000000;
break;
case BANDWIDTH_7_MHZ:
if_freq = 4500000;
break;
default: /* 8 MHz or Auto */
if_freq = 5000000;
break;
}
tuner_freq = params->frequency + if_freq;
i = 0;
while (tda827x_table[i].lomax < tuner_freq) {
if (tda827x_table[i + 1].lomax == 0)
break;
i++;
}
N = ((tuner_freq + 125000) / 250000) << (tda827x_table[i].spd + 2);
buf[0] = 0;
buf[1] = (N>>8) | 0x40;
buf[2] = N & 0xff;
buf[3] = 0;
buf[4] = 0x52;
buf[5] = (tda827x_table[i].spd << 6) + (tda827x_table[i].div1p5 << 5) +
(tda827x_table[i].bs << 3) +
tda827x_table[i].bp;
buf[6] = (tda827x_table[i].gc3 << 4) + 0x8f;
buf[7] = 0xbf;
buf[8] = 0x2a;
buf[9] = 0x05;
buf[10] = 0xff;
buf[11] = 0x00;
buf[12] = 0x00;
buf[13] = 0x40;
msg.len = 14;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) {
printk("%s: could not write to tuner at addr: 0x%02x\n",
__func__, priv->i2c_addr << 1);
return -EIO;
}
msleep(500);
/* correct CP value */
buf[0] = 0x30;
buf[1] = 0x50 + tda827x_table[i].cp;
msg.len = 2;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
priv->frequency = params->frequency;
priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
return 0;
}
static int tda827xo_sleep(struct dvb_frontend *fe)
{
struct tda827x_priv *priv = fe->tuner_priv;
static u8 buf[] = { 0x30, 0xd0 };
struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
.buf = buf, .len = sizeof(buf) };
dprintk("%s:\n", __func__);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
if (priv->cfg && priv->cfg->sleep)
priv->cfg->sleep(fe);
return 0;
}
/* ------------------------------------------------------------------ */
static int tda827xo_set_analog_params(struct dvb_frontend *fe,
struct analog_parameters *params)
{
unsigned char tuner_reg[8];
unsigned char reg2[2];
u32 N;
int i;
struct tda827x_priv *priv = fe->tuner_priv;
struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0 };
unsigned int freq = params->frequency;
tda827x_set_std(fe, params);
if (params->mode == V4L2_TUNER_RADIO)
freq = freq / 1000;
N = freq + priv->sgIF;
i = 0;
while (tda827x_table[i].lomax < N * 62500) {
if (tda827x_table[i + 1].lomax == 0)
break;
i++;
}
N = N << tda827x_table[i].spd;
tuner_reg[0] = 0;
tuner_reg[1] = (unsigned char)(N>>8);
tuner_reg[2] = (unsigned char) N;
tuner_reg[3] = 0x40;
tuner_reg[4] = 0x52 + (priv->lpsel << 5);
tuner_reg[5] = (tda827x_table[i].spd << 6) +
(tda827x_table[i].div1p5 << 5) +
(tda827x_table[i].bs << 3) + tda827x_table[i].bp;
tuner_reg[6] = 0x8f + (tda827x_table[i].gc3 << 4);
tuner_reg[7] = 0x8f;
msg.buf = tuner_reg;
msg.len = 8;
i2c_transfer(priv->i2c_adap, &msg, 1);
msg.buf = reg2;
msg.len = 2;
reg2[0] = 0x80;
reg2[1] = 0;
i2c_transfer(priv->i2c_adap, &msg, 1);
reg2[0] = 0x60;
reg2[1] = 0xbf;
i2c_transfer(priv->i2c_adap, &msg, 1);
reg2[0] = 0x30;
reg2[1] = tuner_reg[4] + 0x80;
i2c_transfer(priv->i2c_adap, &msg, 1);
msleep(1);
reg2[0] = 0x30;
reg2[1] = tuner_reg[4] + 4;
i2c_transfer(priv->i2c_adap, &msg, 1);
msleep(1);
reg2[0] = 0x30;
reg2[1] = tuner_reg[4];
i2c_transfer(priv->i2c_adap, &msg, 1);
msleep(550);
reg2[0] = 0x30;
reg2[1] = (tuner_reg[4] & 0xfc) + tda827x_table[i].cp;
i2c_transfer(priv->i2c_adap, &msg, 1);
reg2[0] = 0x60;
reg2[1] = 0x3f;
i2c_transfer(priv->i2c_adap, &msg, 1);
reg2[0] = 0x80;
reg2[1] = 0x08; /* Vsync en */
i2c_transfer(priv->i2c_adap, &msg, 1);
priv->frequency = params->frequency;
return 0;
}
static void tda827xo_agcf(struct dvb_frontend *fe)
{
struct tda827x_priv *priv = fe->tuner_priv;
unsigned char data[] = { 0x80, 0x0c };
struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
.buf = data, .len = 2};
i2c_transfer(priv->i2c_adap, &msg, 1);
}
/* ------------------------------------------------------------------ */
struct tda827xa_data {
u32 lomax;
u8 svco;
u8 spd;
u8 scr;
u8 sbs;
u8 gc3;
};
static const struct tda827xa_data tda827xa_dvbt[] = {
{ .lomax = 56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 1},
{ .lomax = 67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
{ .lomax = 81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
{ .lomax = 97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
{ .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
{ .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
{ .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
{ .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
{ .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
{ .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
{ .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
{ .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
{ .lomax = 290000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
{ .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
{ .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
{ .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
{ .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
{ .lomax = 550000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
{ .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
{ .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
{ .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
{ .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
{ .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
{ .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
{ .lomax = 0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
};
static struct tda827xa_data tda827xa_analog[] = {
{ .lomax = 56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 3},
{ .lomax = 67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
{ .lomax = 81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
{ .lomax = 97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
{ .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
{ .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
{ .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
{ .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
{ .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
{ .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
{ .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 3},
{ .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 3},
{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
{ .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3},
{ .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3},
{ .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
{ .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
{ .lomax = 554000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
{ .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
{ .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
{ .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
{ .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
{ .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
{ .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
{ .lomax = 0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
};
static int tda827xa_sleep(struct dvb_frontend *fe)
{
struct tda827x_priv *priv = fe->tuner_priv;
static u8 buf[] = { 0x30, 0x90 };
struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
.buf = buf, .len = sizeof(buf) };
dprintk("%s:\n", __func__);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
if (priv->cfg && priv->cfg->sleep)
priv->cfg->sleep(fe);
return 0;
}
static void tda827xa_lna_gain(struct dvb_frontend *fe, int high,
struct analog_parameters *params)
{
struct tda827x_priv *priv = fe->tuner_priv;
unsigned char buf[] = {0x22, 0x01};
int arg;
int gp_func;
struct i2c_msg msg = { .flags = 0, .buf = buf, .len = sizeof(buf) };
if (NULL == priv->cfg) {
dprintk("tda827x_config not defined, cannot set LNA gain!\n");
return;
}
msg.addr = priv->cfg->switch_addr;
if (priv->cfg->config) {
if (high)
dprintk("setting LNA to high gain\n");
else
dprintk("setting LNA to low gain\n");
}
switch (priv->cfg->config) {
case 0: /* no LNA */
break;
case 1: /* switch is GPIO 0 of tda8290 */
case 2:
if (params == NULL) {
gp_func = 0;
arg = 0;
} else {
/* turn Vsync on */
gp_func = 1;
if (params->std & V4L2_STD_MN)
arg = 1;
else
arg = 0;
}
if (fe->callback)
fe->callback(priv->i2c_adap->algo_data,
DVB_FRONTEND_COMPONENT_TUNER,
gp_func, arg);
buf[1] = high ? 0 : 1;
if (priv->cfg->config == 2)
buf[1] = high ? 1 : 0;
i2c_transfer(priv->i2c_adap, &msg, 1);
break;
case 3: /* switch with GPIO of saa713x */
if (fe->callback)
fe->callback(priv->i2c_adap->algo_data,
DVB_FRONTEND_COMPONENT_TUNER, 0, high);
break;
}
}
static int tda827xa_set_params(struct dvb_frontend *fe,
struct dvb_frontend_parameters *params)
{
struct tda827x_priv *priv = fe->tuner_priv;
u8 buf[11];
struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
.buf = buf, .len = sizeof(buf) };
int i, tuner_freq, if_freq;
u32 N;
dprintk("%s:\n", __func__);
tda827xa_lna_gain(fe, 1, NULL);
msleep(20);
switch (params->u.ofdm.bandwidth) {
case BANDWIDTH_6_MHZ:
if_freq = 4000000;
break;
case BANDWIDTH_7_MHZ:
if_freq = 4500000;
break;
default: /* 8 MHz or Auto */
if_freq = 5000000;
break;
}
tuner_freq = params->frequency + if_freq;
i = 0;
while (tda827xa_dvbt[i].lomax < tuner_freq) {
if(tda827xa_dvbt[i + 1].lomax == 0)
break;
i++;
}
N = ((tuner_freq + 31250) / 62500) << tda827xa_dvbt[i].spd;
buf[0] = 0; // subaddress
buf[1] = N >> 8;
buf[2] = N & 0xff;
buf[3] = 0;
buf[4] = 0x16;
buf[5] = (tda827xa_dvbt[i].spd << 5) + (tda827xa_dvbt[i].svco << 3) +
tda827xa_dvbt[i].sbs;
buf[6] = 0x4b + (tda827xa_dvbt[i].gc3 << 4);
buf[7] = 0x1c;
buf[8] = 0x06;
buf[9] = 0x24;
buf[10] = 0x00;
msg.len = 11;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) {
printk("%s: could not write to tuner at addr: 0x%02x\n",
__func__, priv->i2c_addr << 1);
return -EIO;
}
buf[0] = 0x90;
buf[1] = 0xff;
buf[2] = 0x60;
buf[3] = 0x00;
buf[4] = 0x59; // lpsel, for 6MHz + 2
msg.len = 5;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
buf[0] = 0xa0;
buf[1] = 0x40;
msg.len = 2;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
msleep(11);
msg.flags = I2C_M_RD;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
msg.flags = 0;
buf[1] >>= 4;
dprintk("tda8275a AGC2 gain is: %d\n", buf[1]);
if ((buf[1]) < 2) {
tda827xa_lna_gain(fe, 0, NULL);
buf[0] = 0x60;
buf[1] = 0x0c;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
}
buf[0] = 0xc0;
buf[1] = 0x99; // lpsel, for 6MHz + 2
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
buf[0] = 0x60;
buf[1] = 0x3c;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
/* correct CP value */
buf[0] = 0x30;
buf[1] = 0x10 + tda827xa_dvbt[i].scr;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
msleep(163);
buf[0] = 0xc0;
buf[1] = 0x39; // lpsel, for 6MHz + 2
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
msleep(3);
/* freeze AGC1 */
buf[0] = 0x50;
buf[1] = 0x4f + (tda827xa_dvbt[i].gc3 << 4);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
priv->frequency = params->frequency;
priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
return 0;
}
static int tda827xa_set_analog_params(struct dvb_frontend *fe,
struct analog_parameters *params)
{
unsigned char tuner_reg[11];
u32 N;
int i;
struct tda827x_priv *priv = fe->tuner_priv;
struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
.buf = tuner_reg, .len = sizeof(tuner_reg) };
unsigned int freq = params->frequency;
tda827x_set_std(fe, params);
tda827xa_lna_gain(fe, 1, params);
msleep(10);
if (params->mode == V4L2_TUNER_RADIO)
freq = freq / 1000;
N = freq + priv->sgIF;
i = 0;
while (tda827xa_analog[i].lomax < N * 62500) {
if (tda827xa_analog[i + 1].lomax == 0)
break;
i++;
}
N = N << tda827xa_analog[i].spd;
tuner_reg[0] = 0;
tuner_reg[1] = (unsigned char)(N>>8);
tuner_reg[2] = (unsigned char) N;
tuner_reg[3] = 0;
tuner_reg[4] = 0x16;
tuner_reg[5] = (tda827xa_analog[i].spd << 5) +
(tda827xa_analog[i].svco << 3) +
tda827xa_analog[i].sbs;
tuner_reg[6] = 0x8b + (tda827xa_analog[i].gc3 << 4);
tuner_reg[7] = 0x1c;
tuner_reg[8] = 4;
tuner_reg[9] = 0x20;
tuner_reg[10] = 0x00;
msg.len = 11;
i2c_transfer(priv->i2c_adap, &msg, 1);
tuner_reg[0] = 0x90;
tuner_reg[1] = 0xff;
tuner_reg[2] = 0xe0;
tuner_reg[3] = 0;
tuner_reg[4] = 0x99 + (priv->lpsel << 1);
msg.len = 5;
i2c_transfer(priv->i2c_adap, &msg, 1);
tuner_reg[0] = 0xa0;
tuner_reg[1] = 0xc0;
msg.len = 2;
i2c_transfer(priv->i2c_adap, &msg, 1);
tuner_reg[0] = 0x30;
tuner_reg[1] = 0x10 + tda827xa_analog[i].scr;
i2c_transfer(priv->i2c_adap, &msg, 1);
msg.flags = I2C_M_RD;
i2c_transfer(priv->i2c_adap, &msg, 1);
msg.flags = 0;
tuner_reg[1] >>= 4;
dprintk("AGC2 gain is: %d\n", tuner_reg[1]);
if (tuner_reg[1] < 1)
tda827xa_lna_gain(fe, 0, params);
msleep(100);
tuner_reg[0] = 0x60;
tuner_reg[1] = 0x3c;
i2c_transfer(priv->i2c_adap, &msg, 1);
msleep(163);
tuner_reg[0] = 0x50;
tuner_reg[1] = 0x8f + (tda827xa_analog[i].gc3 << 4);
i2c_transfer(priv->i2c_adap, &msg, 1);
tuner_reg[0] = 0x80;
tuner_reg[1] = 0x28;
i2c_transfer(priv->i2c_adap, &msg, 1);
tuner_reg[0] = 0xb0;
tuner_reg[1] = 0x01;
i2c_transfer(priv->i2c_adap, &msg, 1);
tuner_reg[0] = 0xc0;
tuner_reg[1] = 0x19 + (priv->lpsel << 1);
i2c_transfer(priv->i2c_adap, &msg, 1);
priv->frequency = params->frequency;
return 0;
}
static void tda827xa_agcf(struct dvb_frontend *fe)
{
struct tda827x_priv *priv = fe->tuner_priv;
unsigned char data[] = {0x80, 0x2c};
struct i2c_msg msg = {.addr = priv->i2c_addr, .flags = 0,
.buf = data, .len = 2};
i2c_transfer(priv->i2c_adap, &msg, 1);
}
/* ------------------------------------------------------------------ */
static int tda827x_release(struct dvb_frontend *fe)
{
kfree(fe->tuner_priv);
fe->tuner_priv = NULL;
return 0;
}
static int tda827x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct tda827x_priv *priv = fe->tuner_priv;
*frequency = priv->frequency;
return 0;
}
static int tda827x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
{
struct tda827x_priv *priv = fe->tuner_priv;
*bandwidth = priv->bandwidth;
return 0;
}
static int tda827x_init(struct dvb_frontend *fe)
{
struct tda827x_priv *priv = fe->tuner_priv;
dprintk("%s:\n", __func__);
if (priv->cfg && priv->cfg->init)
priv->cfg->init(fe);
return 0;
}
static int tda827x_probe_version(struct dvb_frontend *fe);
static int tda827x_initial_init(struct dvb_frontend *fe)
{
int ret;
ret = tda827x_probe_version(fe);
if (ret)
return ret;
return fe->ops.tuner_ops.init(fe);
}
static int tda827x_initial_sleep(struct dvb_frontend *fe)
{
int ret;
ret = tda827x_probe_version(fe);
if (ret)
return ret;
return fe->ops.tuner_ops.sleep(fe);
}
static struct dvb_tuner_ops tda827xo_tuner_ops = {
.info = {
.name = "Philips TDA827X",
.frequency_min = 55000000,
.frequency_max = 860000000,
.frequency_step = 250000
},
.release = tda827x_release,
.init = tda827x_initial_init,
.sleep = tda827x_initial_sleep,
.set_params = tda827xo_set_params,
.set_analog_params = tda827xo_set_analog_params,
.get_frequency = tda827x_get_frequency,
.get_bandwidth = tda827x_get_bandwidth,
};
static struct dvb_tuner_ops tda827xa_tuner_ops = {
.info = {
.name = "Philips TDA827XA",
.frequency_min = 44000000,
.frequency_max = 906000000,
.frequency_step = 62500
},
.release = tda827x_release,
.init = tda827x_init,
.sleep = tda827xa_sleep,
.set_params = tda827xa_set_params,
.set_analog_params = tda827xa_set_analog_params,
.get_frequency = tda827x_get_frequency,
.get_bandwidth = tda827x_get_bandwidth,
};
static int tda827x_probe_version(struct dvb_frontend *fe)
{ u8 data;
struct tda827x_priv *priv = fe->tuner_priv;
struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = I2C_M_RD,
.buf = &data, .len = 1 };
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) {
printk("%s: could not read from tuner at addr: 0x%02x\n",
__func__, msg.addr << 1);
return -EIO;
}
if ((data & 0x3c) == 0) {
dprintk("tda827x tuner found\n");
fe->ops.tuner_ops.init = tda827x_init;
fe->ops.tuner_ops.sleep = tda827xo_sleep;
if (priv->cfg)
priv->cfg->agcf = tda827xo_agcf;
} else {
dprintk("tda827xa tuner found\n");
memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops));
if (priv->cfg)
priv->cfg->agcf = tda827xa_agcf;
}
return 0;
}
struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr,
struct i2c_adapter *i2c,
struct tda827x_config *cfg)
{
struct tda827x_priv *priv = NULL;
dprintk("%s:\n", __func__);
priv = kzalloc(sizeof(struct tda827x_priv), GFP_KERNEL);
if (priv == NULL)
return NULL;
priv->i2c_addr = addr;
priv->i2c_adap = i2c;
priv->cfg = cfg;
memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops));
fe->tuner_priv = priv;
dprintk("type set to %s\n", fe->ops.tuner_ops.info.name);
return fe;
}
EXPORT_SYMBOL_GPL(tda827x_attach);
MODULE_DESCRIPTION("DVB TDA827x driver");
MODULE_AUTHOR("Hartmut Hackmann <hartmut.hackmann@t-online.de>");
MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
MODULE_LICENSE("GPL");
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
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