886 lines
25 KiB
C
886 lines
25 KiB
C
/*
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i2c tv tuner chip device driver
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controls the philips tda8290+75 tuner chip combo.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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This "tda8290" module was split apart from the original "tuner" module.
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*/
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/videodev2.h>
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#include "tuner-i2c.h"
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#include "tda8290.h"
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#include "tda827x.h"
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#include "tda18271.h"
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "enable verbose debug messages");
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static int deemphasis_50;
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module_param(deemphasis_50, int, 0644);
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MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis");
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/* ---------------------------------------------------------------------- */
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struct tda8290_priv {
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struct tuner_i2c_props i2c_props;
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unsigned char tda8290_easy_mode;
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unsigned char tda827x_addr;
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unsigned char ver;
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#define TDA8290 1
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#define TDA8295 2
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#define TDA8275 4
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#define TDA8275A 8
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#define TDA18271 16
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struct tda827x_config cfg;
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struct tda18271_std_map *tda18271_std_map;
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};
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/*---------------------------------------------------------------------*/
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static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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static unsigned char enable[2] = { 0x21, 0xC0 };
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static unsigned char disable[2] = { 0x21, 0x00 };
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unsigned char *msg;
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if (close) {
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msg = enable;
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tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
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/* let the bridge stabilize */
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msleep(20);
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} else {
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msg = disable;
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tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
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}
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return 0;
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}
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static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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static unsigned char enable[2] = { 0x45, 0xc1 };
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static unsigned char disable[2] = { 0x46, 0x00 };
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static unsigned char buf[3] = { 0x45, 0x01, 0x00 };
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unsigned char *msg;
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if (close) {
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msg = enable;
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tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
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/* let the bridge stabilize */
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msleep(20);
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} else {
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msg = disable;
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tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &msg[1], 1);
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buf[2] = msg[1];
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buf[2] &= ~0x04;
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tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
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msleep(5);
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msg[1] |= 0x04;
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tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
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}
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return 0;
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}
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/*---------------------------------------------------------------------*/
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static void set_audio(struct dvb_frontend *fe,
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struct analog_parameters *params)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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char* mode;
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if (params->std & V4L2_STD_MN) {
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priv->tda8290_easy_mode = 0x01;
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mode = "MN";
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} else if (params->std & V4L2_STD_B) {
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priv->tda8290_easy_mode = 0x02;
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mode = "B";
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} else if (params->std & V4L2_STD_GH) {
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priv->tda8290_easy_mode = 0x04;
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mode = "GH";
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} else if (params->std & V4L2_STD_PAL_I) {
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priv->tda8290_easy_mode = 0x08;
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mode = "I";
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} else if (params->std & V4L2_STD_DK) {
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priv->tda8290_easy_mode = 0x10;
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mode = "DK";
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} else if (params->std & V4L2_STD_SECAM_L) {
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priv->tda8290_easy_mode = 0x20;
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mode = "L";
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} else if (params->std & V4L2_STD_SECAM_LC) {
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priv->tda8290_easy_mode = 0x40;
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mode = "LC";
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} else {
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priv->tda8290_easy_mode = 0x10;
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mode = "xx";
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}
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if (params->mode == V4L2_TUNER_RADIO) {
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/* Set TDA8295 to FM radio; Start TDA8290 with MN values */
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priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0x80 : 0x01;
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tuner_dbg("setting to radio FM\n");
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} else {
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tuner_dbg("setting tda829x to system %s\n", mode);
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}
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}
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static struct {
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unsigned char seq[2];
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} fm_mode[] = {
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{ { 0x01, 0x81} }, /* Put device into expert mode */
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{ { 0x03, 0x48} }, /* Disable NOTCH and VIDEO filters */
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{ { 0x04, 0x04} }, /* Disable color carrier filter (SSIF) */
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{ { 0x05, 0x04} }, /* ADC headroom */
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{ { 0x06, 0x10} }, /* group delay flat */
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{ { 0x07, 0x00} }, /* use the same radio DTO values as a tda8295 */
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{ { 0x08, 0x00} },
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{ { 0x09, 0x80} },
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{ { 0x0a, 0xda} },
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{ { 0x0b, 0x4b} },
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{ { 0x0c, 0x68} },
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{ { 0x0d, 0x00} }, /* PLL off, no video carrier detect */
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{ { 0x14, 0x00} }, /* disable auto mute if no video */
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};
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static void tda8290_set_params(struct dvb_frontend *fe,
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struct analog_parameters *params)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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static unsigned char soft_reset[] = { 0x00, 0x00 };
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unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode };
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static unsigned char expert_mode[] = { 0x01, 0x80 };
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static unsigned char agc_out_on[] = { 0x02, 0x00 };
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static unsigned char gainset_off[] = { 0x28, 0x14 };
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static unsigned char if_agc_spd[] = { 0x0f, 0x88 };
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static unsigned char adc_head_6[] = { 0x05, 0x04 };
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static unsigned char adc_head_9[] = { 0x05, 0x02 };
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static unsigned char adc_head_12[] = { 0x05, 0x01 };
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static unsigned char pll_bw_nom[] = { 0x0d, 0x47 };
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static unsigned char pll_bw_low[] = { 0x0d, 0x27 };
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static unsigned char gainset_2[] = { 0x28, 0x64 };
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static unsigned char agc_rst_on[] = { 0x0e, 0x0b };
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static unsigned char agc_rst_off[] = { 0x0e, 0x09 };
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static unsigned char if_agc_set[] = { 0x0f, 0x81 };
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static unsigned char addr_adc_sat = 0x1a;
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static unsigned char addr_agc_stat = 0x1d;
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static unsigned char addr_pll_stat = 0x1b;
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static unsigned char adc_sat = 0, agc_stat = 0,
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pll_stat;
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int i;
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set_audio(fe, params);
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if (priv->cfg.config)
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tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
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tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
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tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
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tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
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msleep(1);
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if (params->mode == V4L2_TUNER_RADIO) {
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unsigned char deemphasis[] = { 0x13, 1 };
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/* FIXME: allow using a different deemphasis */
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if (deemphasis_50)
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deemphasis[1] = 2;
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for (i = 0; i < ARRAY_SIZE(fm_mode); i++)
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tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2);
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tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2);
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} else {
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expert_mode[1] = priv->tda8290_easy_mode + 0x80;
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tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
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tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
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tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
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if (priv->tda8290_easy_mode & 0x60)
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tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
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else
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tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
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tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
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}
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if (fe->ops.analog_ops.i2c_gate_ctrl)
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fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
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if (fe->ops.tuner_ops.set_analog_params)
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fe->ops.tuner_ops.set_analog_params(fe, params);
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for (i = 0; i < 3; i++) {
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&addr_pll_stat, 1, &pll_stat, 1);
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if (pll_stat & 0x80) {
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&addr_adc_sat, 1,
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&adc_sat, 1);
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&addr_agc_stat, 1,
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&agc_stat, 1);
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tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
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break;
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} else {
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tuner_dbg("tda8290 not locked, no signal?\n");
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msleep(100);
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}
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}
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/* adjust headroom resp. gain */
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if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
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tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
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agc_stat, adc_sat, pll_stat & 0x80);
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tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
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msleep(100);
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&addr_agc_stat, 1, &agc_stat, 1);
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&addr_pll_stat, 1, &pll_stat, 1);
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if ((agc_stat > 115) || !(pll_stat & 0x80)) {
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tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
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agc_stat, pll_stat & 0x80);
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if (priv->cfg.agcf)
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priv->cfg.agcf(fe);
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msleep(100);
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&addr_agc_stat, 1,
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&agc_stat, 1);
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&addr_pll_stat, 1,
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&pll_stat, 1);
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if((agc_stat > 115) || !(pll_stat & 0x80)) {
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tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
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tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
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tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
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msleep(100);
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}
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}
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}
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/* l/ l' deadlock? */
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if(priv->tda8290_easy_mode & 0x60) {
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&addr_adc_sat, 1,
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&adc_sat, 1);
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&addr_pll_stat, 1,
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&pll_stat, 1);
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if ((adc_sat > 20) || !(pll_stat & 0x80)) {
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tuner_dbg("trying to resolve SECAM L deadlock\n");
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tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
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msleep(40);
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tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
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}
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}
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if (fe->ops.analog_ops.i2c_gate_ctrl)
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fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
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tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
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}
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/*---------------------------------------------------------------------*/
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static void tda8295_power(struct dvb_frontend *fe, int enable)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
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tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
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if (enable)
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buf[1] = 0x01;
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else
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buf[1] = 0x03;
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tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
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}
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static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char buf[] = { 0x01, 0x00 };
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tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
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if (enable)
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buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
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else
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buf[1] = 0x00; /* reset active bit */
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tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
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}
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static void tda8295_set_video_std(struct dvb_frontend *fe)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
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tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
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tda8295_set_easy_mode(fe, 1);
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msleep(20);
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tda8295_set_easy_mode(fe, 0);
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}
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/*---------------------------------------------------------------------*/
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static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
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tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
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if (enable)
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buf[1] &= ~0x40;
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else
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buf[1] |= 0x40;
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tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
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}
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static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char set_gpio_cf[] = { 0x44, 0x00 };
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unsigned char set_gpio_val[] = { 0x46, 0x00 };
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&set_gpio_cf[0], 1, &set_gpio_cf[1], 1);
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&set_gpio_val[0], 1, &set_gpio_val[1], 1);
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set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
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if (enable) {
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set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */
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set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
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}
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tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
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tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
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}
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static int tda8295_has_signal(struct dvb_frontend *fe, u16 *signal)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char hvpll_stat = 0x26;
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unsigned char ret;
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tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1);
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*signal = (ret & 0x01) ? 65535 : 0;
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return 0;
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}
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/*---------------------------------------------------------------------*/
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static void tda8295_set_params(struct dvb_frontend *fe,
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struct analog_parameters *params)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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u16 signal = 0;
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unsigned char blanking_mode[] = { 0x1d, 0x00 };
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set_audio(fe, params);
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tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
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tda8295_power(fe, 1);
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tda8295_agc1_out(fe, 1);
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tuner_i2c_xfer_send_recv(&priv->i2c_props,
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&blanking_mode[0], 1, &blanking_mode[1], 1);
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tda8295_set_video_std(fe);
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blanking_mode[1] = 0x03;
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tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
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msleep(20);
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if (fe->ops.analog_ops.i2c_gate_ctrl)
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fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
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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);
|
|
|
|
tda8295_has_signal(fe, &signal);
|
|
if (signal)
|
|
tuner_dbg("tda8295 is locked\n");
|
|
else
|
|
tuner_dbg("tda8295 not locked, no signal?\n");
|
|
|
|
if (fe->ops.analog_ops.i2c_gate_ctrl)
|
|
fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------*/
|
|
|
|
static int tda8290_has_signal(struct dvb_frontend *fe, u16 *signal)
|
|
{
|
|
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);
|
|
*signal = (afc & 0x80) ? 65535 : 0;
|
|
return 0;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------*/
|
|
|
|
static void tda8290_standby(struct dvb_frontend *fe)
|
|
{
|
|
struct tda8290_priv *priv = fe->analog_demod_priv;
|
|
|
|
static unsigned char cb1[] = { 0x30, 0xD0 };
|
|
static unsigned char tda8290_standby[] = { 0x00, 0x02 };
|
|
static unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
|
|
struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
|
|
|
|
if (fe->ops.analog_ops.i2c_gate_ctrl)
|
|
fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
|
|
if (priv->ver & TDA8275A)
|
|
cb1[1] = 0x90;
|
|
i2c_transfer(priv->i2c_props.adap, &msg, 1);
|
|
if (fe->ops.analog_ops.i2c_gate_ctrl)
|
|
fe->ops.analog_ops.i2c_gate_ctrl(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;
|
|
|
|
static unsigned char set_VS[] = { 0x30, 0x6F };
|
|
static unsigned char set_GP00_CF[] = { 0x20, 0x01 };
|
|
static unsigned char set_GP01_CF[] = { 0x20, 0x0B };
|
|
|
|
if ((priv->cfg.config == TDA8290_LNA_GP0_HIGH_ON) ||
|
|
(priv->cfg.config == TDA8290_LNA_GP0_HIGH_OFF))
|
|
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;
|
|
static unsigned char tda8275_init[] =
|
|
{ 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
|
|
0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
|
|
static 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;
|
|
|
|
if (fe->ops.analog_ops.i2c_gate_ctrl)
|
|
fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
|
|
i2c_transfer(priv->i2c_props.adap, &msg, 1);
|
|
if (fe->ops.analog_ops.i2c_gate_ctrl)
|
|
fe->ops.analog_ops.i2c_gate_ctrl(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;
|
|
int i, ret, tuners_found;
|
|
u32 tuner_addrs;
|
|
u8 data;
|
|
struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
|
|
|
|
if (fe->ops.analog_ops.i2c_gate_ctrl)
|
|
fe->ops.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
|
|
*/
|
|
|
|
if (fe->ops.analog_ops.i2c_gate_ctrl)
|
|
fe->ops.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;
|
|
|
|
if (fe->ops.analog_ops.i2c_gate_ctrl)
|
|
fe->ops.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");
|
|
if (fe->ops.analog_ops.i2c_gate_ctrl)
|
|
fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
|
|
return -EREMOTEIO;
|
|
}
|
|
|
|
if ((data == 0x83) || (data == 0x84)) {
|
|
priv->ver |= TDA18271;
|
|
tda829x_tda18271_config.config = priv->cfg.config;
|
|
tda829x_tda18271_config.std_map = priv->tda18271_std_map;
|
|
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);
|
|
|
|
if (fe->ops.analog_ops.i2c_gate_ctrl)
|
|
fe->ops.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 = ® },
|
|
{ .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 = ® },
|
|
{ .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 const 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 const 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;
|
|
priv->tda18271_std_map = cfg->tda18271_std_map;
|
|
}
|
|
|
|
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 && cfg->no_i2c_gate)
|
|
fe->ops.analog_ops.i2c_gate_ctrl = NULL;
|
|
|
|
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,
|
|
};
|
|
|
|
static unsigned char soft_reset[] = { 0x00, 0x00 };
|
|
static unsigned char easy_mode_b[] = { 0x01, 0x02 };
|
|
static unsigned char easy_mode_g[] = { 0x01, 0x04 };
|
|
static unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
|
|
static 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");
|