diff options
Diffstat (limited to 'drivers/media/dvb/frontends/tda827x.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tda827x.c | 476 |
1 files changed, 476 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/tda827x.c b/drivers/media/dvb/frontends/tda827x.c new file mode 100644 index 000000000000..cff2d1fa4094 --- /dev/null +++ b/drivers/media/dvb/frontends/tda827x.c @@ -0,0 +1,476 @@ +/* + * + * (c) 2005 Hartmut Hackmann + * (c) 2007 Michael Krufky + * + * 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. + */ + +#include <linux/module.h> +#include <linux/dvb/frontend.h> +#include <asm/types.h> + +#include "tda827x.h" + +static int debug = 0; +#define dprintk(args...) \ + do { \ + if (debug) printk(KERN_DEBUG "tda827x: " args); \ + } while (0) + +struct tda827x_priv { + int i2c_addr; + struct i2c_adapter *i2c_adap; + struct tda827x_config *cfg; + u32 frequency; + u32 bandwidth; +}; + +struct tda827x_data { + u32 lomax; + u8 spd; + u8 bs; + u8 bp; + u8 cp; + u8 gc3; + u8 div1p5; +}; + +static const struct tda827x_data tda827x_dvbt[] = { + { .lomax = 62000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1}, + { .lomax = 66000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1}, + { .lomax = 76000000, .spd = 3, .bs = 1, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0}, + { .lomax = 84000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0}, + { .lomax = 93000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 98000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 109000000, .spd = 3, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 123000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1}, + { .lomax = 133000000, .spd = 2, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1}, + { .lomax = 151000000, .spd = 2, .bs = 1, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 154000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 181000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 0, .div1p5 = 0}, + { .lomax = 185000000, .spd = 2, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 217000000, .spd = 2, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 244000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1}, + { .lomax = 265000000, .spd = 1, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1}, + { .lomax = 302000000, .spd = 1, .bs = 1, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 324000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 370000000, .spd = 1, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 454000000, .spd = 1, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 493000000, .spd = 0, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1}, + { .lomax = 530000000, .spd = 0, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1}, + { .lomax = 554000000, .spd = 0, .bs = 1, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0}, + { .lomax = 604000000, .spd = 0, .bs = 1, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0}, + { .lomax = 696000000, .spd = 0, .bs = 2, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0}, + { .lomax = 740000000, .spd = 0, .bs = 2, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0}, + { .lomax = 820000000, .spd = 0, .bs = 3, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0}, + { .lomax = 865000000, .spd = 0, .bs = 3, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0}, + { .lomax = 0, .spd = 0, .bs = 0, .bp = 0, .cp = 0, .gc3 = 0, .div1p5 = 0} +}; + +static int tda827xo_set_params(struct dvb_frontend *fe, + struct dvb_frontend_parameters *params) +{ + struct tda827x_priv *priv = fe->tuner_priv; + u8 buf[14]; + + struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0, + .buf = buf, .len = sizeof(buf) }; + int i, tuner_freq, if_freq; + u32 N; + + switch (params->u.ofdm.bandwidth) { + case BANDWIDTH_6_MHZ: + if_freq = 4000000; + break; + case BANDWIDTH_7_MHZ: + if_freq = 4500000; + break; + default: /* 8 MHz or Auto */ + if_freq = 5000000; + break; + } + tuner_freq = params->frequency + if_freq; + + i = 0; + while (tda827x_dvbt[i].lomax < tuner_freq) { + if(tda827x_dvbt[i + 1].lomax == 0) + break; + i++; + } + + N = ((tuner_freq + 125000) / 250000) << (tda827x_dvbt[i].spd + 2); + buf[0] = 0; + buf[1] = (N>>8) | 0x40; + buf[2] = N & 0xff; + buf[3] = 0; + buf[4] = 0x52; + buf[5] = (tda827x_dvbt[i].spd << 6) + (tda827x_dvbt[i].div1p5 << 5) + + (tda827x_dvbt[i].bs << 3) + tda827x_dvbt[i].bp; + buf[6] = (tda827x_dvbt[i].gc3 << 4) + 0x8f; + buf[7] = 0xbf; + buf[8] = 0x2a; + buf[9] = 0x05; + buf[10] = 0xff; + buf[11] = 0x00; + buf[12] = 0x00; + buf[13] = 0x40; + + msg.len = 14; + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) { + printk("%s: could not write to tuner at addr: 0x%02x\n", + __FUNCTION__, priv->i2c_addr << 1); + return -EIO; + } + msleep(500); + /* correct CP value */ + buf[0] = 0x30; + buf[1] = 0x50 + tda827x_dvbt[i].cp; + msg.len = 2; + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + + priv->frequency = tuner_freq - if_freq; // FIXME + priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0; + + return 0; +} + +static int tda827xo_sleep(struct dvb_frontend *fe) +{ + struct tda827x_priv *priv = fe->tuner_priv; + static u8 buf[] = { 0x30, 0xd0 }; + struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0, + .buf = buf, .len = sizeof(buf) }; + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + + if (priv->cfg && priv->cfg->sleep) + priv->cfg->sleep(fe); + + return 0; +} + +/* ------------------------------------------------------------------ */ + +struct tda827xa_data { + u32 lomax; + u8 svco; + u8 spd; + u8 scr; + u8 sbs; + u8 gc3; +}; + +static const struct tda827xa_data tda827xa_dvbt[] = { + { .lomax = 56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 1}, + { .lomax = 67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1}, + { .lomax = 81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1}, + { .lomax = 97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1}, + { .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1}, + { .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1}, + { .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1}, + { .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1}, + { .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1}, + { .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1}, + { .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1}, + { .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1}, + { .lomax = 290000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1}, + { .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1}, + { .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1}, + { .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1}, + { .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1}, + { .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1}, + { .lomax = 550000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1}, + { .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0}, + { .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0}, + { .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0}, + { .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0}, + { .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0}, + { .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0}, + { .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0}, + { .lomax = 0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0} +}; + +static int tda827xa_set_params(struct dvb_frontend *fe, + struct dvb_frontend_parameters *params) +{ + struct tda827x_priv *priv = fe->tuner_priv; + u8 buf[10]; + + struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0, + .buf = buf, .len = sizeof(buf) }; + + int i, tuner_freq, if_freq; + u32 N; + + if (priv->cfg && priv->cfg->lna_gain) + priv->cfg->lna_gain(fe, 1); + msleep(20); + + switch (params->u.ofdm.bandwidth) { + case BANDWIDTH_6_MHZ: + if_freq = 4000000; + break; + case BANDWIDTH_7_MHZ: + if_freq = 4500000; + break; + default: /* 8 MHz or Auto */ + if_freq = 5000000; + break; + } + tuner_freq = params->frequency + if_freq; + + i = 0; + while (tda827xa_dvbt[i].lomax < tuner_freq) { + if(tda827xa_dvbt[i + 1].lomax == 0) + break; + i++; + } + + N = ((tuner_freq + 31250) / 62500) << tda827xa_dvbt[i].spd; + buf[0] = 0; // subaddress + buf[1] = N >> 8; + buf[2] = N & 0xff; + buf[3] = 0; + buf[4] = 0x16; + buf[5] = (tda827xa_dvbt[i].spd << 5) + (tda827xa_dvbt[i].svco << 3) + + tda827xa_dvbt[i].sbs; + buf[6] = 0x4b + (tda827xa_dvbt[i].gc3 << 4); + buf[7] = 0x1c; + buf[8] = 0x06; + buf[9] = 0x24; + buf[10] = 0x00; + msg.len = 11; + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) { + printk("%s: could not write to tuner at addr: 0x%02x\n", + __FUNCTION__, priv->i2c_addr << 1); + return -EIO; + } + buf[0] = 0x90; + buf[1] = 0xff; + buf[2] = 0x60; + buf[3] = 0x00; + buf[4] = 0x59; // lpsel, for 6MHz + 2 + msg.len = 5; + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + + buf[0] = 0xa0; + buf[1] = 0x40; + msg.len = 2; + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + + msleep(11); + msg.flags = I2C_M_RD; + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + msg.flags = 0; + + buf[1] >>= 4; + dprintk("tda8275a AGC2 gain is: %d\n", buf[1]); + if ((buf[1]) < 2) { + if (priv->cfg && priv->cfg->lna_gain) + priv->cfg->lna_gain(fe, 0); + buf[0] = 0x60; + buf[1] = 0x0c; + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + } + + buf[0] = 0xc0; + buf[1] = 0x99; // lpsel, for 6MHz + 2 + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + + buf[0] = 0x60; + buf[1] = 0x3c; + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + + /* correct CP value */ + buf[0] = 0x30; + buf[1] = 0x10 + tda827xa_dvbt[i].scr; + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + + msleep(163); + buf[0] = 0xc0; + buf[1] = 0x39; // lpsel, for 6MHz + 2 + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + + msleep(3); + /* freeze AGC1 */ + buf[0] = 0x50; + buf[1] = 0x4f + (tda827xa_dvbt[i].gc3 << 4); + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + i2c_transfer(priv->i2c_adap, &msg, 1); + + priv->frequency = tuner_freq - if_freq; // FIXME + priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0; + + return 0; +} + +static int tda827xa_sleep(struct dvb_frontend *fe) +{ + struct tda827x_priv *priv = fe->tuner_priv; + static u8 buf[] = { 0x30, 0x90 }; + struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0, + .buf = buf, .len = sizeof(buf) }; + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + + i2c_transfer(priv->i2c_adap, &msg, 1); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + + if (priv->cfg && priv->cfg->sleep) + priv->cfg->sleep(fe); + + return 0; +} + +static int tda827x_release(struct dvb_frontend *fe) +{ + kfree(fe->tuner_priv); + fe->tuner_priv = NULL; + return 0; +} + +static int tda827x_get_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + struct tda827x_priv *priv = fe->tuner_priv; + *frequency = priv->frequency; + return 0; +} + +static int tda827x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) +{ + struct tda827x_priv *priv = fe->tuner_priv; + *bandwidth = priv->bandwidth; + return 0; +} + +static int tda827x_init(struct dvb_frontend *fe) +{ + struct tda827x_priv *priv = fe->tuner_priv; + + if (priv->cfg && priv->cfg->init) + priv->cfg->init(fe); + + return 0; +} + + +static struct dvb_tuner_ops tda827xo_tuner_ops = { + .info = { + .name = "Philips TDA827X", + }, + .release = tda827x_release, + .init = tda827x_init, + .sleep = tda827xo_sleep, + .set_params = tda827xo_set_params, + .get_frequency = tda827x_get_frequency, + .get_bandwidth = tda827x_get_bandwidth, +}; + +static struct dvb_tuner_ops tda827xa_tuner_ops = { + .info = { + .name = "Philips TDA827XA", + }, + .release = tda827x_release, + .init = tda827x_init, + .sleep = tda827xa_sleep, + .set_params = tda827xa_set_params, + .get_frequency = tda827x_get_frequency, + .get_bandwidth = tda827x_get_bandwidth, +}; + +struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr, + struct i2c_adapter *i2c, + struct tda827x_config *cfg) +{ + struct tda827x_priv *priv = NULL; + u8 data; + struct i2c_msg msg = { .addr = addr, .flags = I2C_M_RD, + .buf = &data, .len = 1 }; + dprintk("%s:\n", __FUNCTION__); + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + + if (i2c_transfer(i2c, &msg, 1) != 1) { + printk("%s: could not read from tuner at addr: 0x%02x\n", + __FUNCTION__, addr << 1); + return NULL; + } + + priv = kzalloc(sizeof(struct tda827x_priv), GFP_KERNEL); + if (priv == NULL) + return NULL; + + priv->i2c_addr = addr; + priv->i2c_adap = i2c; + priv->cfg = cfg; + if ((data & 0x3c) == 0) { + dprintk("tda827x tuner found\n"); + memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops)); + } else { + dprintk("tda827xa tuner found\n"); + memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops)); + } + fe->tuner_priv = priv; + + return fe; +} +EXPORT_SYMBOL(tda827x_attach); + +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); + +MODULE_DESCRIPTION("DVB TDA827x driver"); +MODULE_AUTHOR("Hartmut Hackmann"); +MODULE_AUTHOR("Michael Krufky"); +MODULE_LICENSE("GPL"); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * --------------------------------------------------------------------------- + * Local variables: + * c-basic-offset: 8 + * End: + */ |