| /* |
| |
| 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/delay.h> |
| #include <linux/videodev.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_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(&priv->i2c_props, msg, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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) { |
| priv->tda8290_easy_mode = 0x01; /* Start with MN values */ |
| 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(&priv->i2c_props, &addr_pll_stat, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1); |
| if (pll_stat & 0x80) { |
| tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1); |
| tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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(&priv->i2c_props, &addr_agc_stat, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1); |
| tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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(&priv->i2c_props, &addr_agc_stat, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1); |
| tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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(&priv->i2c_props, &addr_adc_sat, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1); |
| tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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(&priv->i2c_props, &buf[0], 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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(&priv->i2c_props, &buf[0], 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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(&priv->i2c_props, &buf[0], 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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(&priv->i2c_props, &set_gpio_cf[0], 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1); |
| tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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(&priv->i2c_props, &hvpll_stat, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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(&priv->i2c_props, &blanking_mode[0], 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc)); |
| tuner_i2c_xfer_recv(&priv->i2c_props, &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 (NULL == analog_ops->i2c_gate_ctrl) |
| 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"); |
| return -EREMOTEIO; |
| } |
| |
| if ((data == 0x83) || (data == 0x84)) { |
| priv->ver |= TDA18271; |
| 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 |
| unsigned char tda8290_id[] = { 0x1f, 0x00 }; |
| |
| /* detect tda8290 */ |
| tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1); |
| tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1); |
| |
| if (tda8290_id[1] == 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 |
| unsigned char tda8295_id[] = { 0x2f, 0x00 }; |
| |
| /* detect tda8295 */ |
| tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1); |
| tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1); |
| |
| if (tda8295_id[1] == TDA8295_ID) { |
| if (debug) |
| printk(KERN_DEBUG "%s: tda8295 detected @ %d-%04x\n", |
| __func__, 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)) && |
| (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: |
| 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(&i2c_props, soft_reset, 1); |
| tuner_i2c_xfer_recv(&i2c_props, 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(&i2c_props, &addr_dto_lsb, 1); |
| tuner_i2c_xfer_recv(&i2c_props, &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(&i2c_props, &addr_dto_lsb, 1); |
| tuner_i2c_xfer_recv(&i2c_props, &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: |
| */ |