summaryrefslogtreecommitdiffstats
path: root/drivers/media/tuners/tda8290.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/tuners/tda8290.c')
-rw-r--r--drivers/media/tuners/tda8290.c874
1 files changed, 874 insertions, 0 deletions
diff --git a/drivers/media/tuners/tda8290.c b/drivers/media/tuners/tda8290.c
new file mode 100644
index 00000000000..8c4852114ee
--- /dev/null
+++ b/drivers/media/tuners/tda8290.c
@@ -0,0 +1,874 @@
+/*
+
+ 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:
+ */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-20 01:51:29 +0000