/* 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 "tda8290.h" #include "tda827x.h" static int tuner_debug = 0; module_param_named(debug, tuner_debug, int, 0644); MODULE_PARM_DESC(debug, "enable verbose debug messages"); #define PREFIX "tda8290 " /* ---------------------------------------------------------------------- */ struct tda8290_priv { struct tuner_i2c_props i2c_props; unsigned char tda8290_easy_mode; unsigned char tda827x_addr; unsigned char tda827x_ver; struct tda827x_config cfg; }; /*---------------------------------------------------------------------*/ static void tda8290_i2c_bridge(struct tuner *t, int close) { struct tda8290_priv *priv = t->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); } } /*---------------------------------------------------------------------*/ static void set_audio(struct tuner *t) { struct tda8290_priv *priv = t->priv; char* mode; priv->cfg.tda827x_lpsel = 0; if (t->std & V4L2_STD_MN) { priv->cfg.sgIF = 92; priv->tda8290_easy_mode = 0x01; priv->cfg.tda827x_lpsel = 1; mode = "MN"; } else if (t->std & V4L2_STD_B) { priv->cfg.sgIF = 108; priv->tda8290_easy_mode = 0x02; mode = "B"; } else if (t->std & V4L2_STD_GH) { priv->cfg.sgIF = 124; priv->tda8290_easy_mode = 0x04; mode = "GH"; } else if (t->std & V4L2_STD_PAL_I) { priv->cfg.sgIF = 124; priv->tda8290_easy_mode = 0x08; mode = "I"; } else if (t->std & V4L2_STD_DK) { priv->cfg.sgIF = 124; priv->tda8290_easy_mode = 0x10; mode = "DK"; } else if (t->std & V4L2_STD_SECAM_L) { priv->cfg.sgIF = 124; priv->tda8290_easy_mode = 0x20; mode = "L"; } else if (t->std & V4L2_STD_SECAM_LC) { priv->cfg.sgIF = 20; priv->tda8290_easy_mode = 0x40; mode = "LC"; } else { priv->cfg.sgIF = 124; priv->tda8290_easy_mode = 0x10; mode = "xx"; } if (t->mode == V4L2_TUNER_RADIO) priv->cfg.sgIF = 88; /* if frequency is 5.5 MHz */ tuner_dbg("setting tda8290 to system %s\n", mode); } static void tda8290_set_freq(struct tuner *t, unsigned int freq) { struct tda8290_priv *priv = t->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; struct analog_parameters params = { .frequency = freq, .mode = t->mode, .audmode = t->audmode, .std = t->std }; set_audio(t); tuner_dbg("tda827xa config is 0x%02x\n", t->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); 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(t, 1); if (t->fe.ops.tuner_ops.set_analog_params) t->fe.ops.tuner_ops.set_analog_params(&t->fe, ¶ms); 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(&t->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(t, 0); tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2); } /*---------------------------------------------------------------------*/ static int tda8290_has_signal(struct tuner *t) { struct tda8290_priv *priv = t->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 tuner *t) { struct tda8290_priv *priv = t->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(t, 1); if (priv->tda827x_ver != 0) cb1[1] = 0x90; i2c_transfer(priv->i2c_props.adap, &msg, 1); tda8290_i2c_bridge(t, 0); tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2); tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2); } static void tda8290_init_if(struct tuner *t) { struct tda8290_priv *priv = t->priv; unsigned char set_VS[] = { 0x30, 0x6F }; unsigned char set_GP00_CF[] = { 0x20, 0x01 }; unsigned char set_GP01_CF[] = { 0x20, 0x0B }; if ((t->config == 1) || (t->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 tda8290_init_tuner(struct tuner *t) { struct tda8290_priv *priv = t->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->tda827x_ver != 0) msg.buf = tda8275a_init; tda8290_i2c_bridge(t, 1); i2c_transfer(priv->i2c_props.adap, &msg, 1); tda8290_i2c_bridge(t, 0); } /*---------------------------------------------------------------------*/ static void tda8290_release(struct tuner *t) { if (t->fe.ops.tuner_ops.release) t->fe.ops.tuner_ops.release(&t->fe); kfree(t->priv); t->priv = NULL; } static struct tuner_operations tda8290_tuner_ops = { .set_tv_freq = tda8290_set_freq, .set_radio_freq = tda8290_set_freq, .has_signal = tda8290_has_signal, .standby = tda8290_standby, .release = tda8290_release, }; int tda8290_attach(struct tuner *t) { struct tda8290_priv *priv = NULL; u8 data; int i, ret, tuners_found; u32 tuner_addrs; struct i2c_msg msg = {.flags=I2C_M_RD, .buf=&data, .len = 1}; priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL); if (priv == NULL) return -ENOMEM; t->priv = priv; priv->i2c_props.addr = t->i2c.addr; priv->i2c_props.adap = t->i2c.adapter; priv->cfg.config = &t->config; priv->cfg.tuner_callback = t->tuner_callback; tda8290_i2c_bridge(t, 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 */ tda8290_i2c_bridge(t, 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 = 0x61; 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; tda8290_i2c_bridge(t, 1); ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); if( ret != 1) tuner_warn("TDA827x access failed!\n"); if ((data & 0x3c) == 0) { strlcpy(t->i2c.name, "tda8290+75", sizeof(t->i2c.name)); priv->tda827x_ver = 0; } else { strlcpy(t->i2c.name, "tda8290+75a", sizeof(t->i2c.name)); priv->tda827x_ver = 2; } tda827x_attach(&t->fe, priv->tda827x_addr, priv->i2c_props.adap, &priv->cfg); /* FIXME: tda827x module doesn't probe the tuner until * tda827x_initial_sleep is called */ if (t->fe.ops.tuner_ops.sleep) t->fe.ops.tuner_ops.sleep(&t->fe); memcpy(&t->ops, &tda8290_tuner_ops, sizeof(struct tuner_operations)); tuner_info("type set to %s\n", t->i2c.name); priv->cfg.tda827x_lpsel = 0; t->mode = V4L2_TUNER_ANALOG_TV; tda8290_init_tuner(t); tda8290_init_if(t); return 0; } int tda8290_probe(struct tuner *t) { struct tuner_i2c_props i2c_props = { .adap = t->i2c.adapter, .addr = t->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; 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 -1; } EXPORT_SYMBOL_GPL(tda8290_probe); EXPORT_SYMBOL_GPL(tda8290_attach); MODULE_DESCRIPTION("Philips TDA8290 + TDA8275 / TDA8275a tuner driver"); MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann"); MODULE_LICENSE("GPL"); /* * Overrides for Emacs so that we follow Linus's tabbing style. * --------------------------------------------------------------------------- * Local variables: * c-basic-offset: 8 * End: */