diff options
Diffstat (limited to 'drivers/media/tuners/tda8290.c')
| -rw-r--r-- | drivers/media/tuners/tda8290.c | 874 |
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 000000000000..8c4852114eeb --- /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 = ® }, + { .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 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: + */ |