/* Conexant cx24116/cx24118 - DVBS/S2 Satellite demod/tuner driver Copyright (C) 2006-2008 Steven Toth 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. */ /* * Updates by Darron Broad 2007. * * March * Fixed some bugs. * Added diseqc support. * Added corrected signal strength support. * * August * Sync with legacy version. * Some clean ups. */ #include #include #include #include #include #include #include "dvb_frontend.h" #include "cx24116.h" /* * Fetch firmware in the following manner. * * #!/bin/sh * wget ftp://167.206.143.11/outgoing/Oxford/88x_2_117_24275_1_INF.zip * unzip 88x_2_117_24275_1_INF.zip * dd if=Driver88/hcw88bda.sys of=dvb-fe-cx24116.fw skip=81768 bs=1 count=32522 */ #define CX24116_DEFAULT_FIRMWARE "dvb-fe-cx24116.fw" #define CX24116_SEARCH_RANGE_KHZ 5000 /* registers (TO BE COMPLETED) */ #define CX24116_REG_SIGNAL (0xd5) /* arg buffer size */ #define CX24116_ARGLEN (0x1e) /* arg offset for DiSEqC */ #define CX24116_DISEQC_BURST (1) #define CX24116_DISEQC_ARG2_2 (2) /* unknown value=2 */ #define CX24116_DISEQC_ARG3_0 (3) /* unknown value=0 */ #define CX24116_DISEQC_ARG4_0 (4) /* unknown value=0 */ #define CX24116_DISEQC_MSGLEN (5) #define CX24116_DISEQC_MSGOFS (6) /* DiSEqC burst */ #define CX24116_DISEQC_MINI_A (0) #define CX24116_DISEQC_MINI_B (1) static int debug = 0; #define dprintk(args...) \ do { \ if (debug) printk ("cx24116: " args); \ } while (0) enum cmds { CMD_INIT_CMD10 = 0x10, CMD_TUNEREQUEST = 0x11, CMD_INIT_CMD13 = 0x13, CMD_INIT_CMD14 = 0x14, CMD_SEND_DISEQC = 0x21, CMD_SET_TONEPRE = 0x22, CMD_SET_TONE = 0x23, }; /* The Demod/Tuner can't easily provide these, we cache them */ struct cx24116_tuning { u32 frequency; u32 symbol_rate; fe_spectral_inversion_t inversion; fe_code_rate_t fec; fe_modulation_t modulation; /* Demod values */ u8 fec_val; u8 fec_mask; u8 inversion_val; }; /* Basic commands that are sent to the firmware */ struct cx24116_cmd { u8 len; u8 args[CX24116_ARGLEN]; }; struct cx24116_state { struct i2c_adapter* i2c; const struct cx24116_config* config; struct dvb_frontend frontend; struct cx24116_tuning dcur; struct cx24116_tuning dnxt; u8 skip_fw_load; u8 burst; }; static int cx24116_writereg(struct cx24116_state* state, int reg, int data) { u8 buf[] = { reg, data }; struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 }; int err; if (debug>1) printk("cx24116: %s: write reg 0x%02x, value 0x%02x\n", __func__,reg, data); if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) { printk("%s: writereg error(err == %i, reg == 0x%02x," " value == 0x%02x)\n", __func__, err, reg, data); return -EREMOTEIO; } return 0; } /* Bulk byte writes to a single I2C address, for 32k firmware load */ static int cx24116_writeregN(struct cx24116_state* state, int reg, u8 *data, u16 len) { int ret = -EREMOTEIO; struct i2c_msg msg; u8 *buf; buf = kmalloc(len + 1, GFP_KERNEL); if (buf == NULL) { printk("Unable to kmalloc\n"); ret = -ENOMEM; goto error; } *(buf) = reg; memcpy(buf + 1, data, len); msg.addr = state->config->demod_address; msg.flags = 0; msg.buf = buf; msg.len = len + 1; if (debug>1) printk("cx24116: %s: write regN 0x%02x, len = %d\n", __func__,reg, len); if ((ret = i2c_transfer(state->i2c, &msg, 1)) != 1) { printk("%s: writereg error(err == %i, reg == 0x%02x\n", __func__, ret, reg); ret = -EREMOTEIO; } error: kfree(buf); return ret; } static int cx24116_readreg(struct cx24116_state* state, u8 reg) { int ret; u8 b0[] = { reg }; u8 b1[] = { 0 }; struct i2c_msg msg[] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 }, { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; ret = i2c_transfer(state->i2c, msg, 2); if (ret != 2) { printk("%s: reg=0x%x (error=%d)\n", __func__, reg, ret); return ret; } if (debug>1) printk("cx24116: read reg 0x%02x, value 0x%02x\n",reg, b1[0]); return b1[0]; } static int cx24116_set_inversion(struct cx24116_state* state, fe_spectral_inversion_t inversion) { dprintk("%s(%d)\n", __func__, inversion); switch (inversion) { case INVERSION_OFF: state->dnxt.inversion_val = 0x00; break; case INVERSION_ON: state->dnxt.inversion_val = 0x04; break; case INVERSION_AUTO: state->dnxt.inversion_val = 0x0C; break; default: return -EINVAL; } state->dnxt.inversion = inversion; return 0; } /* A table of modulation, fec and configuration bytes for the demod. * Not all S2 mmodulation schemes are support and not all rates with * a scheme are support. Especially, no auto detect when in S2 mode. */ struct cx24116_modfec { fe_modulation_t modulation; fe_code_rate_t fec; u8 mask; /* In DVBS mode this is used to autodetect */ u8 val; /* Passed to the firmware to indicate mode selection */ } CX24116_MODFEC_MODES[] = { /* QPSK. For unknown rates we set hardware to auto detect 0xfe 0x30 */ { QPSK, FEC_NONE, 0xfe, 0x30 }, { QPSK, FEC_1_2, 0x02, 0x2e }, { QPSK, FEC_2_3, 0x04, 0x2f }, { QPSK, FEC_3_4, 0x08, 0x30 }, { QPSK, FEC_4_5, 0xfe, 0x30 }, { QPSK, FEC_5_6, 0x20, 0x31 }, { QPSK, FEC_6_7, 0xfe, 0x30 }, { QPSK, FEC_7_8, 0x80, 0x32 }, { QPSK, FEC_8_9, 0xfe, 0x30 }, { QPSK, FEC_AUTO, 0xfe, 0x30 }, /* NBC-QPSK */ { NBC_QPSK, FEC_1_2, 0x00, 0x04 }, { NBC_QPSK, FEC_3_5, 0x00, 0x05 }, { NBC_QPSK, FEC_2_3, 0x00, 0x06 }, { NBC_QPSK, FEC_3_4, 0x00, 0x07 }, { NBC_QPSK, FEC_4_5, 0x00, 0x08 }, { NBC_QPSK, FEC_5_6, 0x00, 0x09 }, { NBC_QPSK, FEC_8_9, 0x00, 0x0a }, { NBC_QPSK, FEC_9_10, 0x00, 0x0b }, /* 8PSK */ { _8PSK, FEC_3_5, 0x00, 0x0c }, { _8PSK, FEC_2_3, 0x00, 0x0d }, { _8PSK, FEC_3_4, 0x00, 0x0e }, { _8PSK, FEC_5_6, 0x00, 0x0f }, { _8PSK, FEC_9_10, 0x00, 0x11 }, }; static int cx24116_lookup_fecmod(struct cx24116_state* state, fe_modulation_t m, fe_code_rate_t f) { int i, ret = -EOPNOTSUPP; for(i=0 ; i < sizeof(CX24116_MODFEC_MODES) / sizeof(struct cx24116_modfec) ; i++) { if( (m == CX24116_MODFEC_MODES[i].modulation) && (f == CX24116_MODFEC_MODES[i].fec) ) { ret = i; break; } } return ret; } static int cx24116_set_fec(struct cx24116_state* state, fe_modulation_t mod, fe_code_rate_t fec) { int ret = 0; dprintk("%s()\n", __func__); ret = cx24116_lookup_fecmod(state, mod, fec); if(ret < 0) return ret; state->dnxt.fec_val = CX24116_MODFEC_MODES[ret].val; state->dnxt.fec_mask = CX24116_MODFEC_MODES[ret].mask; dprintk("%s() fec_val/mask = 0x%02x/0x%02x\n", __func__, state->dnxt.fec_val, state->dnxt.fec_mask); return 0; } static int cx24116_set_symbolrate(struct cx24116_state* state, u32 rate) { int ret = 0; dprintk("%s()\n", __func__); state->dnxt.symbol_rate = rate; dprintk("%s() symbol_rate = %d\n", __func__, state->dnxt.symbol_rate); /* check if symbol rate is within limits */ if ((state->dnxt.symbol_rate > state->frontend.ops.info.symbol_rate_max) || (state->dnxt.symbol_rate < state->frontend.ops.info.symbol_rate_min)) ret = -EOPNOTSUPP; return ret; } static int cx24116_load_firmware (struct dvb_frontend* fe, const struct firmware *fw); static int cx24116_firmware_ondemand(struct dvb_frontend* fe) { struct cx24116_state *state = fe->demodulator_priv; const struct firmware *fw; int ret = 0; dprintk("%s()\n",__func__); if (cx24116_readreg(state, 0x20) > 0) { if (state->skip_fw_load) return 0; /* Load firmware */ /* request the firmware, this will block until someone uploads it */ printk("%s: Waiting for firmware upload (%s)...\n", __func__, CX24116_DEFAULT_FIRMWARE); ret = request_firmware(&fw, CX24116_DEFAULT_FIRMWARE, &state->i2c->dev); printk("%s: Waiting for firmware upload(2)...\n", __func__); if (ret) { printk("%s: No firmware uploaded (timeout or file not found?)\n", __func__); return ret; } /* Make sure we don't recurse back through here during loading */ state->skip_fw_load = 1; ret = cx24116_load_firmware(fe, fw); if (ret) printk("%s: Writing firmware to device failed\n", __func__); release_firmware(fw); printk("%s: Firmware upload %s\n", __func__, ret == 0 ? "complete" : "failed"); /* Ensure firmware is always loaded if required */ state->skip_fw_load = 0; } return ret; } /* Take a basic firmware command structure, format it and forward it for processing */ static int cx24116_cmd_execute(struct dvb_frontend* fe, struct cx24116_cmd *cmd) { struct cx24116_state *state = fe->demodulator_priv; int i, ret; dprintk("%s()\n", __func__); /* Load the firmware if required */ if ( (ret = cx24116_firmware_ondemand(fe)) != 0) { printk("%s(): Unable initialise the firmware\n", __func__); return ret; } /* Write the command */ for(i = 0; i < cmd->len ; i++) { dprintk("%s: 0x%02x == 0x%02x\n", __func__, i, cmd->args[i]); cx24116_writereg(state, i, cmd->args[i]); } /* Start execution and wait for cmd to terminate */ cx24116_writereg(state, 0x1f, 0x01); while( cx24116_readreg(state, 0x1f) ) { msleep(10); if(i++ > 64) { /* Avoid looping forever if the firmware does no respond */ printk("%s() Firmware not responding\n", __func__); return -EREMOTEIO; } } return 0; } static int cx24116_load_firmware (struct dvb_frontend* fe, const struct firmware *fw) { struct cx24116_state* state = fe->demodulator_priv; struct cx24116_cmd cmd; int ret; dprintk("%s\n", __func__); dprintk("Firmware is %zu bytes (%02x %02x .. %02x %02x)\n" ,fw->size ,fw->data[0] ,fw->data[1] ,fw->data[ fw->size-2 ] ,fw->data[ fw->size-1 ] ); /* Toggle 88x SRST pin to reset demod */ if (state->config->reset_device) state->config->reset_device(fe); /* Begin the firmware load process */ /* Prepare the demod, load the firmware, cleanup after load */ cx24116_writereg(state, 0xF1, 0x08); cx24116_writereg(state, 0xF2, cx24116_readreg(state, 0xF2) | 0x03); cx24116_writereg(state, 0xF3, 0x46); cx24116_writereg(state, 0xF9, 0x00); cx24116_writereg(state, 0xF0, 0x03); cx24116_writereg(state, 0xF4, 0x81); cx24116_writereg(state, 0xF5, 0x00); cx24116_writereg(state, 0xF6, 0x00); /* write the entire firmware as one transaction */ cx24116_writeregN(state, 0xF7, fw->data, fw->size); cx24116_writereg(state, 0xF4, 0x10); cx24116_writereg(state, 0xF0, 0x00); cx24116_writereg(state, 0xF8, 0x06); /* Firmware CMD 10: Chip config? */ cmd.args[0x00] = CMD_INIT_CMD10; cmd.args[0x01] = 0x05; cmd.args[0x02] = 0xdc; cmd.args[0x03] = 0xda; cmd.args[0x04] = 0xae; cmd.args[0x05] = 0xaa; cmd.args[0x06] = 0x04; cmd.args[0x07] = 0x9d; cmd.args[0x08] = 0xfc; cmd.args[0x09] = 0x06; cmd.len= 0x0a; ret = cx24116_cmd_execute(fe, &cmd); if (ret != 0) return ret; cx24116_writereg(state, 0x9d, 0x00); /* Firmware CMD 14: Unknown */ cmd.args[0x00] = CMD_INIT_CMD14; cmd.args[0x01] = 0x00; cmd.args[0x02] = 0x00; cmd.len= 0x03; ret = cx24116_cmd_execute(fe, &cmd); if (ret != 0) return ret; cx24116_writereg(state, 0xe5, 0x00); /* Firmware CMD 13: Unknown - Firmware config? */ cmd.args[0x00] = CMD_INIT_CMD13; cmd.args[0x01] = 0x01; cmd.args[0x02] = 0x75; cmd.args[0x03] = 0x00; cmd.args[0x04] = 0x02; cmd.args[0x05] = 0x00; cmd.len= 0x06; ret = cx24116_cmd_execute(fe, &cmd); if (ret != 0) return ret; return 0; } static int cx24116_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage) { /* The isl6421 module will override this function in the fops. */ dprintk("%s() This should never appear if the isl6421 module is loaded correctly\n",__func__); return -EOPNOTSUPP; } static int cx24116_read_status(struct dvb_frontend* fe, fe_status_t* status) { struct cx24116_state *state = fe->demodulator_priv; int lock = cx24116_readreg(state, 0x9d); dprintk("%s: status = 0x%02x\n", __func__, lock); *status = 0; if (lock & 0x01) *status |= FE_HAS_SIGNAL; if (lock & 0x02) *status |= FE_HAS_CARRIER; if (lock & 0x04) *status |= FE_HAS_VITERBI; if (lock & 0x08) *status |= FE_HAS_SYNC | FE_HAS_LOCK; return 0; } /* TODO: Not clear how we do this */ static int cx24116_read_ber(struct dvb_frontend* fe, u32* ber) { //struct cx24116_state *state = fe->demodulator_priv; dprintk("%s()\n", __func__); *ber = 0; return 0; } /* Signal strength (0..100)% = (sig & 0xf0) * 10 + (sig & 0x0f) * 10 / 16 */ static int cx24116_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength) { struct cx24116_state *state = fe->demodulator_priv; u8 strength_reg; static const u32 strength_tab[] = { /* 10 x Table (rounded up) */ 0x00000,0x0199A,0x03333,0x04ccD,0x06667,0x08000,0x0999A,0x0b333,0x0cccD,0x0e667, 0x10000,0x1199A,0x13333,0x14ccD,0x16667,0x18000 }; dprintk("%s()\n", __func__); strength_reg = cx24116_readreg(state, CX24116_REG_SIGNAL); if(strength_reg < 0xa0) *signal_strength = strength_tab [ ( strength_reg & 0xf0 ) >> 4 ] + ( strength_tab [ ( strength_reg & 0x0f ) ] >> 4 ); else *signal_strength = 0xffff; dprintk("%s: Signal strength (raw / cooked) = (0x%02x / 0x%04x)\n", __func__,strength_reg,*signal_strength); return 0; } /* TODO: Not clear how we do this */ static int cx24116_read_snr(struct dvb_frontend* fe, u16* snr) { //struct cx24116_state *state = fe->demodulator_priv; dprintk("%s()\n", __func__); *snr = 0; return 0; } /* TODO: Not clear how we do this */ static int cx24116_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) { //struct cx24116_state *state = fe->demodulator_priv; dprintk("%s()\n", __func__); *ucblocks = 0; return 0; } /* Overwrite the current tuning params, we are about to tune */ static void cx24116_clone_params(struct dvb_frontend* fe) { struct cx24116_state *state = fe->demodulator_priv; memcpy(&state->dcur, &state->dnxt, sizeof(state->dcur)); } static int cx24116_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone) { struct cx24116_cmd cmd; int ret; dprintk("%s(%d)\n", __func__, tone); if ( (tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF) ) { printk("%s: Invalid, tone=%d\n", __func__, tone); return -EINVAL; } /* This is always done before the tone is set */ cmd.args[0x00] = CMD_SET_TONEPRE; cmd.args[0x01] = 0x00; cmd.len= 0x02; ret = cx24116_cmd_execute(fe, &cmd); if (ret != 0) return ret; /* Now we set the tone */ cmd.args[0x00] = CMD_SET_TONE; cmd.args[0x01] = 0x00; cmd.args[0x02] = 0x00; switch (tone) { case SEC_TONE_ON: dprintk("%s: setting tone on\n", __func__); cmd.args[0x03] = 0x01; break; case SEC_TONE_OFF: dprintk("%s: setting tone off\n",__func__); cmd.args[0x03] = 0x00; break; } cmd.len= 0x04; return cx24116_cmd_execute(fe, &cmd); } /* Initialise DiSEqC */ static int cx24116_diseqc_init(struct dvb_frontend* fe) { struct cx24116_state *state = fe->demodulator_priv; /* Default DiSEqC burst state */ state->burst = CX24116_DISEQC_MINI_A; return 0; } /* Send DiSEqC message with derived burst (hack) || previous burst */ static int cx24116_send_diseqc_msg(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *d) { struct cx24116_state *state = fe->demodulator_priv; struct cx24116_cmd cmd; int i, ret; /* Dump DiSEqC message */ if (debug) { printk("cx24116: %s(", __func__); for(i = 0 ; i < d->msg_len ;) { printk("0x%02x", d->msg[i]); if(++i < d->msg_len) printk(", "); } printk(")\n"); } if(d->msg_len > (CX24116_ARGLEN - CX24116_DISEQC_MSGOFS)) return -EINVAL; cmd.args[0x00] = CMD_SEND_DISEQC; cmd.args[CX24116_DISEQC_ARG2_2] = 0x02; cmd.args[CX24116_DISEQC_ARG3_0] = 0x00; cmd.args[CX24116_DISEQC_ARG4_0] = 0x00; /* DiSEqC message */ for (i = 0; i < d->msg_len; i++) cmd.args[CX24116_DISEQC_MSGOFS + i] = d->msg[i]; /* Hack: Derive burst from command else use previous burst */ if(d->msg_len >= 4 && d->msg[2] == 0x38) cmd.args[CX24116_DISEQC_BURST] = (d->msg[3] >> 2) & 1; else cmd.args[CX24116_DISEQC_BURST] = state->burst; cmd.args[CX24116_DISEQC_MSGLEN] = d->msg_len; cmd.len = CX24116_DISEQC_MSGOFS + d->msg_len; ret = cx24116_cmd_execute(fe, &cmd); /* Firmware command duration is unknown, so guess... * * Eutelsat spec: * >15ms delay + * 13.5ms per byte + * >15ms delay + * 12.5ms burst + * >15ms delay */ if(ret == 0) msleep( (cmd.args[CX24116_DISEQC_MSGLEN] << 4) + 60 ); return ret; } /* Send DiSEqC burst */ static int cx24116_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t burst) { struct cx24116_state *state = fe->demodulator_priv; struct cx24116_cmd cmd; int ret; dprintk("%s(%d)\n",__func__,(int)burst); cmd.args[0x00] = CMD_SEND_DISEQC; cmd.args[CX24116_DISEQC_ARG2_2] = 0x02; cmd.args[CX24116_DISEQC_ARG3_0] = 0x00; cmd.args[CX24116_DISEQC_ARG4_0] = 0x00; if (burst == SEC_MINI_A) cmd.args[CX24116_DISEQC_BURST] = CX24116_DISEQC_MINI_A; else if(burst == SEC_MINI_B) cmd.args[CX24116_DISEQC_BURST] = CX24116_DISEQC_MINI_B; else return -EINVAL; /* Cache as previous burst state */ state->burst= cmd.args[CX24116_DISEQC_BURST]; cmd.args[CX24116_DISEQC_MSGLEN] = 0x00; cmd.len= CX24116_DISEQC_MSGOFS; ret= cx24116_cmd_execute(fe, &cmd); /* Firmware command duration is unknown, so guess... */ if(ret == 0) msleep(60); return ret; } static void cx24116_release(struct dvb_frontend* fe) { struct cx24116_state* state = fe->demodulator_priv; dprintk("%s\n",__func__); kfree(state); } static struct dvb_frontend_ops cx24116_ops; struct dvb_frontend* cx24116_attach(const struct cx24116_config* config, struct i2c_adapter* i2c) { struct cx24116_state* state = NULL; int ret; dprintk("%s\n",__func__); /* allocate memory for the internal state */ state = kmalloc(sizeof(struct cx24116_state), GFP_KERNEL); if (state == NULL) { printk("Unable to kmalloc\n"); goto error; } /* setup the state */ memset(state, 0, sizeof(struct cx24116_state)); state->config = config; state->i2c = i2c; /* check if the demod is present */ ret = (cx24116_readreg(state, 0xFF) << 8) | cx24116_readreg(state, 0xFE); if (ret != 0x0501) { printk("Invalid probe, probably not a CX24116 device\n"); goto error; } /* create dvb_frontend */ memcpy(&state->frontend.ops, &cx24116_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; return &state->frontend; error: kfree(state); return NULL; } static int cx24116_get_params(struct dvb_frontend* fe) { struct cx24116_state *state = fe->demodulator_priv; struct tv_frontend_properties *cache = &fe->tv_property_cache; dprintk("%s()\n",__func__); cache->frequency = state->dcur.frequency; cache->inversion = state->dcur.inversion; cache->modulation = state->dcur.modulation; cache->fec_inner = state->dcur.fec; cache->symbol_rate = state->dcur.symbol_rate; return 0; } static int cx24116_initfe(struct dvb_frontend* fe) { dprintk("%s()\n",__func__); return cx24116_diseqc_init(fe); } static int cx24116_set_property(struct dvb_frontend *fe, tv_property_t* tvp) { dprintk("%s(..)\n", __func__); return 0; } static int cx24116_set_params(struct dvb_frontend *fe) { dprintk("%s(..) We were notified that a tune request may occur\n", __func__); return 0; } /* dvb-core told us to tune, the tv property cache will be complete, * it's safe for is to pull values and use them for tuning purposes. */ static int cx24116_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) { struct cx24116_state *state = fe->demodulator_priv; struct tv_frontend_properties *c = &fe->tv_property_cache; struct cx24116_cmd cmd; fe_status_t tunerstat; int ret; u8 retune=4; dprintk("%s()\n",__func__); state->dnxt.modulation = c->modulation; state->dnxt.frequency = c->frequency; if ((ret = cx24116_set_inversion(state, c->inversion)) != 0) return ret; if ((ret = cx24116_set_fec(state, c->modulation, c->fec_inner)) != 0) return ret; if ((ret = cx24116_set_symbolrate(state, c->symbol_rate)) != 0) return ret; /* discard the 'current' tuning parameters and prepare to tune */ cx24116_clone_params(fe); dprintk("%s: frequency = %d\n", __func__, state->dcur.frequency); dprintk("%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate); dprintk("%s: FEC = %d (mask/val = 0x%02x/0x%02x)\n", __func__, state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val); dprintk("%s: Inversion = %d (val = 0x%02x)\n", __func__, state->dcur.inversion, state->dcur.inversion_val); if (state->config->set_ts_params) state->config->set_ts_params(fe, 0); /* Prepare a tune request */ cmd.args[0x00] = CMD_TUNEREQUEST; /* Frequency */ cmd.args[0x01] = (state->dcur.frequency & 0xff0000) >> 16; cmd.args[0x02] = (state->dcur.frequency & 0x00ff00) >> 8; cmd.args[0x03] = (state->dcur.frequency & 0x0000ff); /* Symbol Rate */ cmd.args[0x04] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8; cmd.args[0x05] = ((state->dcur.symbol_rate / 1000) & 0x00ff); /* Automatic Inversion */ cmd.args[0x06] = state->dcur.inversion_val; /* Modulation / FEC & Pilot Off */ cmd.args[0x07] = state->dcur.fec_val; if (c->pilot == PILOT_ON) cmd.args[0x07] |= 0x40; cmd.args[0x08] = CX24116_SEARCH_RANGE_KHZ >> 8; cmd.args[0x09] = CX24116_SEARCH_RANGE_KHZ & 0xff; cmd.args[0x0a] = 0x00; cmd.args[0x0b] = 0x00; cmd.args[0x0c] = 0x02; cmd.args[0x0d] = state->dcur.fec_mask; cmd.args[0x0e] = 0x06; cmd.args[0x0f] = 0x00; cmd.args[0x10] = 0x00; cmd.args[0x11] = 0xFA; cmd.args[0x12] = 0x24; cmd.len= 0x13; /* We need to support pilot and non-pilot tuning in the * driver automatically. This is a workaround for because * the demod does not support autodetect. */ do { /* Reset status register? */ cx24116_writereg(state, 0x9d, 0xc1); /* Tune */ ret = cx24116_cmd_execute(fe, &cmd); if( ret != 0 ) break; /* The hardware can take time to lock, wait a while */ msleep(500); cx24116_read_status(fe, &tunerstat); if(tunerstat & FE_HAS_SIGNAL) { if(tunerstat & FE_HAS_SYNC) /* Tuned */ break; else if(c->pilot == PILOT_AUTO) /* Toggle pilot bit */ cmd.args[0x07] ^= 0x40; } } while(--retune); return ret; } static struct dvb_frontend_ops cx24116_ops = { .info = { .name = "Conexant CX24116/CX24118", .type = FE_QPSK, .frequency_min = 950000, .frequency_max = 2150000, .frequency_stepsize = 1011, /* kHz for QPSK frontends */ .frequency_tolerance = 5000, .symbol_rate_min = 1000000, .symbol_rate_max = 45000000, .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | FE_CAN_QPSK | FE_CAN_RECOVER }, .release = cx24116_release, .init = cx24116_initfe, .read_status = cx24116_read_status, .read_ber = cx24116_read_ber, .read_signal_strength = cx24116_read_signal_strength, .read_snr = cx24116_read_snr, .read_ucblocks = cx24116_read_ucblocks, .set_tone = cx24116_set_tone, .set_voltage = cx24116_set_voltage, .diseqc_send_master_cmd = cx24116_send_diseqc_msg, .diseqc_send_burst = cx24116_diseqc_send_burst, .set_property = cx24116_set_property, .set_params = cx24116_set_params, .set_frontend = cx24116_set_frontend, }; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)"); MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24116/cx24118 hardware"); MODULE_AUTHOR("Steven Toth"); MODULE_LICENSE("GPL"); EXPORT_SYMBOL(cx24116_attach);