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linux-next/drivers/media/common/tuners/tda8290.c
Jarod Wilson 89a8969afa [media] tda829x: fix regression in probe functions 
In commit 567aba0b79, the probe address
for tda8290_probe and tda8295_probe was hard-coded to 0x4b, which is the
default i2c address for those devices, but its possible for the device
to be at an alternate address, 0x42, which is the case for the HVR-1950.
If we probe the wrong address, probe fails and we have a non-working
device. We have the actual address passed into the function by way of
i2c_props, we just need to use it. Also fix up some copy/paste comment
issues and streamline debug spew a touch. Verified to restore my
HVR-1950 to full working order.

Special thanks to Ken Bass for reporting the issue in the first place,
and to both he and Gary Buhrmaster for aiding in debugging and analysis
of the problem.

Reported-by: Ken Bass <kbass@kenbass.com>
Tested-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-02 14:18:12 -03:00

875 lines
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/*
i2c tv tuner chip device driver
controls the philips tda8290+75 tuner chip combo.
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.
This "tda8290" module was split apart from the original "tuner" module.
*/
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/videodev2.h>
#include "tuner-i2c.h"
#include "tda8290.h"
#include "tda827x.h"
#include "tda18271.h"
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "enable verbose debug messages");
static int deemphasis_50;
module_param(deemphasis_50, int, 0644);
MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis");
/* ---------------------------------------------------------------------- */
struct tda8290_priv {
struct tuner_i2c_props i2c_props;
unsigned char tda8290_easy_mode;
unsigned char tda827x_addr;
unsigned char ver;
#define TDA8290 1
#define TDA8295 2
#define TDA8275 4
#define TDA8275A 8
#define TDA18271 16
struct tda827x_config cfg;
};
/*---------------------------------------------------------------------*/
static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char enable[2] = { 0x21, 0xC0 };
unsigned char disable[2] = { 0x21, 0x00 };
unsigned char *msg;
if (close) {
msg = enable;
tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
/* let the bridge stabilize */
msleep(20);
} else {
msg = disable;
tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
}
return 0;
}
static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char enable[2] = { 0x45, 0xc1 };
unsigned char disable[2] = { 0x46, 0x00 };
unsigned char buf[3] = { 0x45, 0x01, 0x00 };
unsigned char *msg;
if (close) {
msg = enable;
tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
/* let the bridge stabilize */
msleep(20);
} else {
msg = disable;
tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &msg[1], 1);
buf[2] = msg[1];
buf[2] &= ~0x04;
tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
msleep(5);
msg[1] |= 0x04;
tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
}
return 0;
}
/*---------------------------------------------------------------------*/
static void set_audio(struct dvb_frontend *fe,
struct analog_parameters *params)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
char* mode;
if (params->std & V4L2_STD_MN) {
priv->tda8290_easy_mode = 0x01;
mode = "MN";
} else if (params->std & V4L2_STD_B) {
priv->tda8290_easy_mode = 0x02;
mode = "B";
} else if (params->std & V4L2_STD_GH) {
priv->tda8290_easy_mode = 0x04;
mode = "GH";
} else if (params->std & V4L2_STD_PAL_I) {
priv->tda8290_easy_mode = 0x08;
mode = "I";
} else if (params->std & V4L2_STD_DK) {
priv->tda8290_easy_mode = 0x10;
mode = "DK";
} else if (params->std & V4L2_STD_SECAM_L) {
priv->tda8290_easy_mode = 0x20;
mode = "L";
} else if (params->std & V4L2_STD_SECAM_LC) {
priv->tda8290_easy_mode = 0x40;
mode = "LC";
} else {
priv->tda8290_easy_mode = 0x10;
mode = "xx";
}
if (params->mode == V4L2_TUNER_RADIO) {
/* Set TDA8295 to FM radio; Start TDA8290 with MN values */
priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0x80 : 0x01;
tuner_dbg("setting to radio FM\n");
} else {
tuner_dbg("setting tda829x to system %s\n", mode);
}
}
static struct {
unsigned char seq[2];
} fm_mode[] = {
{ { 0x01, 0x81} }, /* Put device into expert mode */
{ { 0x03, 0x48} }, /* Disable NOTCH and VIDEO filters */
{ { 0x04, 0x04} }, /* Disable color carrier filter (SSIF) */
{ { 0x05, 0x04} }, /* ADC headroom */
{ { 0x06, 0x10} }, /* group delay flat */
{ { 0x07, 0x00} }, /* use the same radio DTO values as a tda8295 */
{ { 0x08, 0x00} },
{ { 0x09, 0x80} },
{ { 0x0a, 0xda} },
{ { 0x0b, 0x4b} },
{ { 0x0c, 0x68} },
{ { 0x0d, 0x00} }, /* PLL off, no video carrier detect */
{ { 0x14, 0x00} }, /* disable auto mute if no video */
};
static void tda8290_set_params(struct dvb_frontend *fe,
struct analog_parameters *params)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char soft_reset[] = { 0x00, 0x00 };
unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode };
unsigned char expert_mode[] = { 0x01, 0x80 };
unsigned char agc_out_on[] = { 0x02, 0x00 };
unsigned char gainset_off[] = { 0x28, 0x14 };
unsigned char if_agc_spd[] = { 0x0f, 0x88 };
unsigned char adc_head_6[] = { 0x05, 0x04 };
unsigned char adc_head_9[] = { 0x05, 0x02 };
unsigned char adc_head_12[] = { 0x05, 0x01 };
unsigned char pll_bw_nom[] = { 0x0d, 0x47 };
unsigned char pll_bw_low[] = { 0x0d, 0x27 };
unsigned char gainset_2[] = { 0x28, 0x64 };
unsigned char agc_rst_on[] = { 0x0e, 0x0b };
unsigned char agc_rst_off[] = { 0x0e, 0x09 };
unsigned char if_agc_set[] = { 0x0f, 0x81 };
unsigned char addr_adc_sat = 0x1a;
unsigned char addr_agc_stat = 0x1d;
unsigned char addr_pll_stat = 0x1b;
unsigned char adc_sat, agc_stat,
pll_stat;
int i;
set_audio(fe, params);
if (priv->cfg.config)
tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
msleep(1);
if (params->mode == V4L2_TUNER_RADIO) {
unsigned char deemphasis[] = { 0x13, 1 };
/* FIXME: allow using a different deemphasis */
if (deemphasis_50)
deemphasis[1] = 2;
for (i = 0; i < ARRAY_SIZE(fm_mode); i++)
tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2);
tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2);
} else {
expert_mode[1] = priv->tda8290_easy_mode + 0x80;
tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
if (priv->tda8290_easy_mode & 0x60)
tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
else
tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
}
tda8290_i2c_bridge(fe, 1);
if (fe->ops.tuner_ops.set_analog_params)
fe->ops.tuner_ops.set_analog_params(fe, params);
for (i = 0; i < 3; i++) {
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_pll_stat, 1, &pll_stat, 1);
if (pll_stat & 0x80) {
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_adc_sat, 1,
&adc_sat, 1);
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_agc_stat, 1,
&agc_stat, 1);
tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
break;
} else {
tuner_dbg("tda8290 not locked, no signal?\n");
msleep(100);
}
}
/* adjust headroom resp. gain */
if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
agc_stat, adc_sat, pll_stat & 0x80);
tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
msleep(100);
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_agc_stat, 1, &agc_stat, 1);
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_pll_stat, 1, &pll_stat, 1);
if ((agc_stat > 115) || !(pll_stat & 0x80)) {
tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
agc_stat, pll_stat & 0x80);
if (priv->cfg.agcf)
priv->cfg.agcf(fe);
msleep(100);
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_agc_stat, 1,
&agc_stat, 1);
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_pll_stat, 1,
&pll_stat, 1);
if((agc_stat > 115) || !(pll_stat & 0x80)) {
tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
msleep(100);
}
}
}
/* l/ l' deadlock? */
if(priv->tda8290_easy_mode & 0x60) {
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_adc_sat, 1,
&adc_sat, 1);
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&addr_pll_stat, 1,
&pll_stat, 1);
if ((adc_sat > 20) || !(pll_stat & 0x80)) {
tuner_dbg("trying to resolve SECAM L deadlock\n");
tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
msleep(40);
tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
}
}
tda8290_i2c_bridge(fe, 0);
tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
}
/*---------------------------------------------------------------------*/
static void tda8295_power(struct dvb_frontend *fe, int enable)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
if (enable)
buf[1] = 0x01;
else
buf[1] = 0x03;
tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
}
static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char buf[] = { 0x01, 0x00 };
tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
if (enable)
buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
else
buf[1] = 0x00; /* reset active bit */
tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
}
static void tda8295_set_video_std(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
tda8295_set_easy_mode(fe, 1);
msleep(20);
tda8295_set_easy_mode(fe, 0);
}
/*---------------------------------------------------------------------*/
static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
if (enable)
buf[1] &= ~0x40;
else
buf[1] |= 0x40;
tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
}
static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char set_gpio_cf[] = { 0x44, 0x00 };
unsigned char set_gpio_val[] = { 0x46, 0x00 };
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&set_gpio_cf[0], 1, &set_gpio_cf[1], 1);
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&set_gpio_val[0], 1, &set_gpio_val[1], 1);
set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
if (enable) {
set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */
set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
}
tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
}
static int tda8295_has_signal(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char hvpll_stat = 0x26;
unsigned char ret;
tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1);
return (ret & 0x01) ? 65535 : 0;
}
/*---------------------------------------------------------------------*/
static void tda8295_set_params(struct dvb_frontend *fe,
struct analog_parameters *params)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char blanking_mode[] = { 0x1d, 0x00 };
set_audio(fe, params);
tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
tda8295_power(fe, 1);
tda8295_agc1_out(fe, 1);
tuner_i2c_xfer_send_recv(&priv->i2c_props,
&blanking_mode[0], 1, &blanking_mode[1], 1);
tda8295_set_video_std(fe);
blanking_mode[1] = 0x03;
tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
msleep(20);
tda8295_i2c_bridge(fe, 1);
if (fe->ops.tuner_ops.set_analog_params)
fe->ops.tuner_ops.set_analog_params(fe, params);
if (priv->cfg.agcf)
priv->cfg.agcf(fe);
if (tda8295_has_signal(fe))
tuner_dbg("tda8295 is locked\n");
else
tuner_dbg("tda8295 not locked, no signal?\n");
tda8295_i2c_bridge(fe, 0);
}
/*---------------------------------------------------------------------*/
static int tda8290_has_signal(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char i2c_get_afc[1] = { 0x1B };
unsigned char afc = 0;
tuner_i2c_xfer_send_recv(&priv->i2c_props,
i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1);
return (afc & 0x80)? 65535:0;
}
/*---------------------------------------------------------------------*/
static void tda8290_standby(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char cb1[] = { 0x30, 0xD0 };
unsigned char tda8290_standby[] = { 0x00, 0x02 };
unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
tda8290_i2c_bridge(fe, 1);
if (priv->ver & TDA8275A)
cb1[1] = 0x90;
i2c_transfer(priv->i2c_props.adap, &msg, 1);
tda8290_i2c_bridge(fe, 0);
tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
}
static void tda8295_standby(struct dvb_frontend *fe)
{
tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
tda8295_power(fe, 0);
}
static void tda8290_init_if(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char set_VS[] = { 0x30, 0x6F };
unsigned char set_GP00_CF[] = { 0x20, 0x01 };
unsigned char set_GP01_CF[] = { 0x20, 0x0B };
if ((priv->cfg.config == 1) || (priv->cfg.config == 2))
tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
else
tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
}
static void tda8295_init_if(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
static unsigned char set_adc_ctl[] = { 0x33, 0x14 };
static unsigned char set_adc_ctl2[] = { 0x34, 0x00 };
static unsigned char set_pll_reg6[] = { 0x3e, 0x63 };
static unsigned char set_pll_reg0[] = { 0x38, 0x23 };
static unsigned char set_pll_reg7[] = { 0x3f, 0x01 };
static unsigned char set_pll_reg10[] = { 0x42, 0x61 };
static unsigned char set_gpio_reg0[] = { 0x44, 0x0b };
tda8295_power(fe, 1);
tda8295_set_easy_mode(fe, 0);
tda8295_set_video_std(fe);
tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
tda8295_agc1_out(fe, 0);
tda8295_agc2_out(fe, 0);
}
static void tda8290_init_tuner(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
.buf=tda8275_init, .len = 14};
if (priv->ver & TDA8275A)
msg.buf = tda8275a_init;
tda8290_i2c_bridge(fe, 1);
i2c_transfer(priv->i2c_props.adap, &msg, 1);
tda8290_i2c_bridge(fe, 0);
}
/*---------------------------------------------------------------------*/
static void tda829x_release(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
/* only try to release the tuner if we've
* attached it from within this module */
if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
if (fe->ops.tuner_ops.release)
fe->ops.tuner_ops.release(fe);
kfree(fe->analog_demod_priv);
fe->analog_demod_priv = NULL;
}
static struct tda18271_config tda829x_tda18271_config = {
.gate = TDA18271_GATE_ANALOG,
};
static int tda829x_find_tuner(struct dvb_frontend *fe)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
int i, ret, tuners_found;
u32 tuner_addrs;
u8 data;
struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
if (!analog_ops->i2c_gate_ctrl) {
printk(KERN_ERR "tda8290: no gate control were provided!\n");
return -EINVAL;
}
analog_ops->i2c_gate_ctrl(fe, 1);
/* probe for tuner chip */
tuners_found = 0;
tuner_addrs = 0;
for (i = 0x60; i <= 0x63; i++) {
msg.addr = i;
ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
if (ret == 1) {
tuners_found++;
tuner_addrs = (tuner_addrs << 8) + i;
}
}
/* if there is more than one tuner, we expect the right one is
behind the bridge and we choose the highest address that doesn't
give a response now
*/
analog_ops->i2c_gate_ctrl(fe, 0);
if (tuners_found > 1)
for (i = 0; i < tuners_found; i++) {
msg.addr = tuner_addrs & 0xff;
ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
if (ret == 1)
tuner_addrs = tuner_addrs >> 8;
else
break;
}
if (tuner_addrs == 0) {
tuner_addrs = 0x60;
tuner_info("could not clearly identify tuner address, "
"defaulting to %x\n", tuner_addrs);
} else {
tuner_addrs = tuner_addrs & 0xff;
tuner_info("setting tuner address to %x\n", tuner_addrs);
}
priv->tda827x_addr = tuner_addrs;
msg.addr = tuner_addrs;
analog_ops->i2c_gate_ctrl(fe, 1);
ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
if (ret != 1) {
tuner_warn("tuner access failed!\n");
analog_ops->i2c_gate_ctrl(fe, 0);
return -EREMOTEIO;
}
if ((data == 0x83) || (data == 0x84)) {
priv->ver |= TDA18271;
tda829x_tda18271_config.config = priv->cfg.config;
dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
priv->i2c_props.adap, &tda829x_tda18271_config);
} else {
if ((data & 0x3c) == 0)
priv->ver |= TDA8275;
else
priv->ver |= TDA8275A;
dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
priv->i2c_props.adap, &priv->cfg);
priv->cfg.switch_addr = priv->i2c_props.addr;
}
if (fe->ops.tuner_ops.init)
fe->ops.tuner_ops.init(fe);
if (fe->ops.tuner_ops.sleep)
fe->ops.tuner_ops.sleep(fe);
analog_ops->i2c_gate_ctrl(fe, 0);
return 0;
}
static int tda8290_probe(struct tuner_i2c_props *i2c_props)
{
#define TDA8290_ID 0x89
u8 reg = 0x1f, id;
struct i2c_msg msg_read[] = {
{ .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = &reg },
{ .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id },
};
/* detect tda8290 */
if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {
printk(KERN_WARNING "%s: couldn't read register 0x%02x\n",
__func__, reg);
return -ENODEV;
}
if (id == TDA8290_ID) {
if (debug)
printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
__func__, i2c_adapter_id(i2c_props->adap),
i2c_props->addr);
return 0;
}
return -ENODEV;
}
static int tda8295_probe(struct tuner_i2c_props *i2c_props)
{
#define TDA8295_ID 0x8a
#define TDA8295C2_ID 0x8b
u8 reg = 0x2f, id;
struct i2c_msg msg_read[] = {
{ .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = &reg },
{ .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id },
};
/* detect tda8295 */
if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {
printk(KERN_WARNING "%s: couldn't read register 0x%02x\n",
__func__, reg);
return -ENODEV;
}
if ((id & 0xfe) == TDA8295_ID) {
if (debug)
printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n",
__func__, (id == TDA8295_ID) ?
"tda8295c1" : "tda8295c2",
i2c_adapter_id(i2c_props->adap),
i2c_props->addr);
return 0;
}
return -ENODEV;
}
static struct analog_demod_ops tda8290_ops = {
.set_params = tda8290_set_params,
.has_signal = tda8290_has_signal,
.standby = tda8290_standby,
.release = tda829x_release,
.i2c_gate_ctrl = tda8290_i2c_bridge,
};
static struct analog_demod_ops tda8295_ops = {
.set_params = tda8295_set_params,
.has_signal = tda8295_has_signal,
.standby = tda8295_standby,
.release = tda829x_release,
.i2c_gate_ctrl = tda8295_i2c_bridge,
};
struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c_adap, u8 i2c_addr,
struct tda829x_config *cfg)
{
struct tda8290_priv *priv = NULL;
char *name;
priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
if (priv == NULL)
return NULL;
fe->analog_demod_priv = priv;
priv->i2c_props.addr = i2c_addr;
priv->i2c_props.adap = i2c_adap;
priv->i2c_props.name = "tda829x";
if (cfg)
priv->cfg.config = cfg->lna_cfg;
if (tda8290_probe(&priv->i2c_props) == 0) {
priv->ver = TDA8290;
memcpy(&fe->ops.analog_ops, &tda8290_ops,
sizeof(struct analog_demod_ops));
}
if (tda8295_probe(&priv->i2c_props) == 0) {
priv->ver = TDA8295;
memcpy(&fe->ops.analog_ops, &tda8295_ops,
sizeof(struct analog_demod_ops));
}
if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) {
tda8295_power(fe, 1);
if (tda829x_find_tuner(fe) < 0)
goto fail;
}
switch (priv->ver) {
case TDA8290:
name = "tda8290";
break;
case TDA8295:
name = "tda8295";
break;
case TDA8290 | TDA8275:
name = "tda8290+75";
break;
case TDA8295 | TDA8275:
name = "tda8295+75";
break;
case TDA8290 | TDA8275A:
name = "tda8290+75a";
break;
case TDA8295 | TDA8275A:
name = "tda8295+75a";
break;
case TDA8290 | TDA18271:
name = "tda8290+18271";
break;
case TDA8295 | TDA18271:
name = "tda8295+18271";
break;
default:
goto fail;
}
tuner_info("type set to %s\n", name);
fe->ops.analog_ops.info.name = name;
if (priv->ver & TDA8290) {
if (priv->ver & (TDA8275 | TDA8275A))
tda8290_init_tuner(fe);
tda8290_init_if(fe);
} else if (priv->ver & TDA8295)
tda8295_init_if(fe);
return fe;
fail:
memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops));
tda829x_release(fe);
return NULL;
}
EXPORT_SYMBOL_GPL(tda829x_attach);
int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
{
struct tuner_i2c_props i2c_props = {
.adap = i2c_adap,
.addr = i2c_addr,
};
unsigned char soft_reset[] = { 0x00, 0x00 };
unsigned char easy_mode_b[] = { 0x01, 0x02 };
unsigned char easy_mode_g[] = { 0x01, 0x04 };
unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
unsigned char addr_dto_lsb = 0x07;
unsigned char data;
#define PROBE_BUFFER_SIZE 8
unsigned char buf[PROBE_BUFFER_SIZE];
int i;
/* rule out tda9887, which would return the same byte repeatedly */
tuner_i2c_xfer_send_recv(&i2c_props,
soft_reset, 1, buf, PROBE_BUFFER_SIZE);
for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
if (buf[i] != buf[0])
break;
}
/* all bytes are equal, not a tda829x - probably a tda9887 */
if (i == PROBE_BUFFER_SIZE)
return -ENODEV;
if ((tda8290_probe(&i2c_props) == 0) ||
(tda8295_probe(&i2c_props) == 0))
return 0;
/* fall back to old probing method */
tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1);
if (data == 0) {
tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
tuner_i2c_xfer_send_recv(&i2c_props,
&addr_dto_lsb, 1, &data, 1);
if (data == 0x7b) {
return 0;
}
}
tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
return -ENODEV;
}
EXPORT_SYMBOL_GPL(tda829x_probe);
MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
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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