diff options
Diffstat (limited to 'drivers/media/dvb-frontends/cx24120.c')
| -rw-r--r-- | drivers/media/dvb-frontends/cx24120.c | 1577 |
1 files changed, 1577 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/cx24120.c b/drivers/media/dvb-frontends/cx24120.c new file mode 100644 index 000000000000..344d8b8e37e5 --- /dev/null +++ b/drivers/media/dvb-frontends/cx24120.c @@ -0,0 +1,1577 @@ +/* + Conexant cx24120/cx24118 - DVBS/S2 Satellite demod/tuner driver + + Copyright (C) 2008 Patrick Boettcher <pb@linuxtv.org> + Copyright (C) 2009 Sergey Tyurin <forum.free-x.de> + Updated 2012 by Jannis Achstetter <jannis_achstetter@web.de> + Copyright (C) 2015 Jemma Denson <jdenson@gmail.com> + April 2015 + Refactored & simplified driver + Updated to work with delivery system supplied by DVBv5 + Add frequency, fec & pilot to get_frontend + + Cards supported: Technisat Skystar S2 + + 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. +*/ + +#include <linux/slab.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/firmware.h> +#include "dvb_frontend.h" +#include "cx24120.h" + +#define CX24120_SEARCH_RANGE_KHZ 5000 +#define CX24120_FIRMWARE "dvb-fe-cx24120-1.20.58.2.fw" + +/* cx24120 i2c registers */ +#define CX24120_REG_CMD_START (0x00) /* write cmd_id */ +#define CX24120_REG_CMD_ARGS (0x01) /* write command arguments */ +#define CX24120_REG_CMD_END (0x1f) /* write 0x01 for end */ + +#define CX24120_REG_MAILBOX (0x33) +#define CX24120_REG_FREQ3 (0x34) /* frequency */ +#define CX24120_REG_FREQ2 (0x35) +#define CX24120_REG_FREQ1 (0x36) + +#define CX24120_REG_FECMODE (0x39) /* FEC status */ +#define CX24120_REG_STATUS (0x3a) /* Tuner status */ +#define CX24120_REG_SIGSTR_H (0x3a) /* Signal strength high */ +#define CX24120_REG_SIGSTR_L (0x3b) /* Signal strength low byte */ +#define CX24120_REG_QUALITY_H (0x40) /* SNR high byte */ +#define CX24120_REG_QUALITY_L (0x41) /* SNR low byte */ + +#define CX24120_REG_BER_HH (0x47) /* BER high byte of high word */ +#define CX24120_REG_BER_HL (0x48) /* BER low byte of high word */ +#define CX24120_REG_BER_LH (0x49) /* BER high byte of low word */ +#define CX24120_REG_BER_LL (0x4a) /* BER low byte of low word */ + +#define CX24120_REG_UCB_H (0x50) /* UCB high byte */ +#define CX24120_REG_UCB_L (0x51) /* UCB low byte */ + +#define CX24120_REG_CLKDIV (0xe6) +#define CX24120_REG_RATEDIV (0xf0) + +#define CX24120_REG_REVISION (0xff) /* Chip revision (ro) */ + + +/* Command messages */ +enum command_message_id { + CMD_VCO_SET = 0x10, /* cmd.len = 12; */ + CMD_TUNEREQUEST = 0x11, /* cmd.len = 15; */ + + CMD_MPEG_ONOFF = 0x13, /* cmd.len = 4; */ + CMD_MPEG_INIT = 0x14, /* cmd.len = 7; */ + CMD_BANDWIDTH = 0x15, /* cmd.len = 12; */ + CMD_CLOCK_READ = 0x16, /* read clock */ + CMD_CLOCK_SET = 0x17, /* cmd.len = 10; */ + + CMD_DISEQC_MSG1 = 0x20, /* cmd.len = 11; */ + CMD_DISEQC_MSG2 = 0x21, /* cmd.len = d->msg_len + 6; */ + CMD_SETVOLTAGE = 0x22, /* cmd.len = 2; */ + CMD_SETTONE = 0x23, /* cmd.len = 4; */ + CMD_DISEQC_BURST = 0x24, /* cmd.len not used !!! */ + + CMD_READ_SNR = 0x1a, /* Read signal strength */ + CMD_START_TUNER = 0x1b, /* ??? */ + + CMD_FWVERSION = 0x35, + + CMD_TUNER_INIT = 0x3c, /* cmd.len = 0x03; */ +}; + +#define CX24120_MAX_CMD_LEN 30 + +/* pilot mask */ +#define CX24120_PILOT_OFF (0x00) +#define CX24120_PILOT_ON (0x40) +#define CX24120_PILOT_AUTO (0x80) + +/* signal status */ +#define CX24120_HAS_SIGNAL (0x01) +#define CX24120_HAS_CARRIER (0x02) +#define CX24120_HAS_VITERBI (0x04) +#define CX24120_HAS_LOCK (0x08) +#define CX24120_HAS_UNK1 (0x10) +#define CX24120_HAS_UNK2 (0x20) +#define CX24120_STATUS_MASK (0x0f) +#define CX24120_SIGNAL_MASK (0xc0) + +#define info(args...) do { printk(KERN_INFO "cx24120: "); \ + printk(args); } while (0) +#define err(args...) do { printk(KERN_ERR "cx24120: ### ERROR: "); \ + printk(args); } while (0) + + +/* The Demod/Tuner can't easily provide these, we cache them */ +struct cx24120_tuning { + u32 frequency; + u32 symbol_rate; + fe_spectral_inversion_t inversion; + fe_code_rate_t fec; + + fe_delivery_system_t delsys; + fe_modulation_t modulation; + fe_pilot_t pilot; + + /* Demod values */ + u8 fec_val; + u8 fec_mask; + u8 clkdiv; + u8 ratediv; + u8 inversion_val; + u8 pilot_val; +}; + + +/* Private state */ +struct cx24120_state { + struct i2c_adapter *i2c; + const struct cx24120_config *config; + struct dvb_frontend frontend; + + u8 cold_init; + u8 mpeg_enabled; + + /* current and next tuning parameters */ + struct cx24120_tuning dcur; + struct cx24120_tuning dnxt; +}; + + +/* Command message to firmware */ +struct cx24120_cmd { + u8 id; + u8 len; + u8 arg[CX24120_MAX_CMD_LEN]; +}; + + +/* Read single register */ +static int cx24120_readreg(struct cx24120_state *state, u8 reg) +{ + int ret; + u8 buf = 0; + struct i2c_msg msg[] = { + { .addr = state->config->i2c_addr, + .flags = 0, + .len = 1, + .buf = ® }, + + { .addr = state->config->i2c_addr, + .flags = I2C_M_RD, + .len = 1, + .buf = &buf } + }; + ret = i2c_transfer(state->i2c, msg, 2); + if (ret != 2) { + err("Read error: reg=0x%02x, ret=0x%02x)\n", reg, ret); + return ret; + } + + dev_dbg(&state->i2c->dev, "%s: reg=0x%02x; data=0x%02x\n", + __func__, reg, buf); + + return buf; +} + + +/* Write single register */ +static int cx24120_writereg(struct cx24120_state *state, u8 reg, u8 data) +{ + u8 buf[] = { reg, data }; + struct i2c_msg msg = { + .addr = state->config->i2c_addr, + .flags = 0, + .buf = buf, + .len = 2 }; + int ret; + + ret = i2c_transfer(state->i2c, &msg, 1); + if (ret != 1) { + err("Write error: i2c_write error(err == %i, 0x%02x: 0x%02x)\n", + ret, reg, data); + return ret; + } + + dev_dbg(&state->i2c->dev, "%s: reg=0x%02x; data=0x%02x\n", + __func__, reg, data); + + return 0; +} + + +/* Write multiple registers */ +static int cx24120_writeregN(struct cx24120_state *state, + u8 reg, const u8 *values, u16 len, u8 incr) +{ + int ret; + u8 buf[5]; /* maximum 4 data bytes at once - flexcop limitation + (very limited i2c-interface this one) */ + + struct i2c_msg msg = { + .addr = state->config->i2c_addr, + .flags = 0, + .buf = buf, + .len = len }; + + while (len) { + buf[0] = reg; + msg.len = len > 4 ? 4 : len; + memcpy(&buf[1], values, msg.len); + + len -= msg.len; /* data length revers counter */ + values += msg.len; /* incr data pointer */ + + if (incr) + reg += msg.len; + msg.len++; /* don't forget the addr byte */ + + ret = i2c_transfer(state->i2c, &msg, 1); + if (ret != 1) { + err("i2c_write error(err == %i, 0x%02x)\n", ret, reg); + return ret; + } + + dev_dbg(&state->i2c->dev, + "%s: reg=0x%02x; data=0x%02x,0x%02x,0x%02x,0x%02x\n", + __func__, reg, + buf[1], buf[2], buf[3], buf[4]); + + } + + return 0; +} + + +static struct dvb_frontend_ops cx24120_ops; + +struct dvb_frontend *cx24120_attach(const struct cx24120_config *config, + struct i2c_adapter *i2c) +{ + struct cx24120_state *state = NULL; + int demod_rev; + + info("Conexant cx24120/cx24118 - DVBS/S2 Satellite demod/tuner\n"); + state = kzalloc(sizeof(struct cx24120_state), + GFP_KERNEL); + if (state == NULL) { + err("Unable to allocate memory for cx24120_state\n"); + goto error; + } + + /* setup the state */ + state->config = config; + state->i2c = i2c; + + /* check if the demod is present and has proper type */ + demod_rev = cx24120_readreg(state, CX24120_REG_REVISION); + switch (demod_rev) { + case 0x07: + info("Demod cx24120 rev. 0x07 detected.\n"); + break; + case 0x05: + info("Demod cx24120 rev. 0x05 detected.\n"); + break; + default: + err("Unsupported demod revision: 0x%x detected.\n", + demod_rev); + goto error; + } + + /* create dvb_frontend */ + state->cold_init = 0; + memcpy(&state->frontend.ops, &cx24120_ops, + sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + + info("Conexant cx24120/cx24118 attached.\n"); + return &state->frontend; + +error: + kfree(state); + return NULL; +} +EXPORT_SYMBOL(cx24120_attach); + +static int cx24120_test_rom(struct cx24120_state *state) +{ + int err, ret; + + err = cx24120_readreg(state, 0xfd); + if (err & 4) { + ret = cx24120_readreg(state, 0xdf) & 0xfe; + err = cx24120_writereg(state, 0xdf, ret); + } + return err; +} + + +static int cx24120_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct cx24120_state *state = fe->demodulator_priv; + + *snr = (cx24120_readreg(state, CX24120_REG_QUALITY_H)<<8) | + (cx24120_readreg(state, CX24120_REG_QUALITY_L)); + dev_dbg(&state->i2c->dev, "%s: read SNR index = %d\n", + __func__, *snr); + + return 0; +} + + +static int cx24120_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct cx24120_state *state = fe->demodulator_priv; + + *ber = (cx24120_readreg(state, CX24120_REG_BER_HH) << 24) | + (cx24120_readreg(state, CX24120_REG_BER_HL) << 16) | + (cx24120_readreg(state, CX24120_REG_BER_LH) << 8) | + cx24120_readreg(state, CX24120_REG_BER_LL); + dev_dbg(&state->i2c->dev, "%s: read BER index = %d\n", + __func__, *ber); + + return 0; +} + +static int cx24120_msg_mpeg_output_global_config(struct cx24120_state *state, + u8 flag); + +/* Check if we're running a command that needs to disable mpeg out */ +static void cx24120_check_cmd(struct cx24120_state *state, u8 id) +{ + switch (id) { + case CMD_TUNEREQUEST: + case CMD_CLOCK_READ: + case CMD_DISEQC_MSG1: + case CMD_DISEQC_MSG2: + case CMD_SETVOLTAGE: + case CMD_SETTONE: + cx24120_msg_mpeg_output_global_config(state, 0); + /* Old driver would do a msleep(100) here */ + default: + return; + } +} + + +/* Send a message to the firmware */ +static int cx24120_message_send(struct cx24120_state *state, + struct cx24120_cmd *cmd) +{ + int ret, ficus; + + if (state->mpeg_enabled) { + /* Disable mpeg out on certain commands */ + cx24120_check_cmd(state, cmd->id); + } + + ret = cx24120_writereg(state, CX24120_REG_CMD_START, cmd->id); + ret = cx24120_writeregN(state, CX24120_REG_CMD_ARGS, &cmd->arg[0], + cmd->len, 1); + ret = cx24120_writereg(state, CX24120_REG_CMD_END, 0x01); + + ficus = 1000; + while (cx24120_readreg(state, CX24120_REG_CMD_END)) { + msleep(20); + ficus -= 20; + if (ficus == 0) { + err("Error sending message to firmware\n"); + return -EREMOTEIO; + } + } + dev_dbg(&state->i2c->dev, "%s: Successfully send message 0x%02x\n", + __func__, cmd->id); + + return 0; +} + +/* Send a message and fill arg[] with the results */ +static int cx24120_message_sendrcv(struct cx24120_state *state, + struct cx24120_cmd *cmd, u8 numreg) +{ + int ret, i; + + if (numreg > CX24120_MAX_CMD_LEN) { + err("Too many registers to read. cmd->reg = %d", numreg); + return -EREMOTEIO; + } + + ret = cx24120_message_send(state, cmd); + if (ret != 0) + return ret; + + if (!numreg) + return 0; + + /* Read numreg registers starting from register cmd->len */ + for (i = 0; i < numreg; i++) + cmd->arg[i] = cx24120_readreg(state, (cmd->len+i+1)); + + return 0; +} + + + +static int cx24120_read_signal_strength(struct dvb_frontend *fe, + u16 *signal_strength) +{ + struct cx24120_state *state = fe->demodulator_priv; + struct cx24120_cmd cmd; + int ret, sigstr_h, sigstr_l; + + cmd.id = CMD_READ_SNR; + cmd.len = 1; + cmd.arg[0] = 0x00; + + ret = cx24120_message_send(state, &cmd); + if (ret != 0) { + err("error reading signal strength\n"); + return -EREMOTEIO; + } + + /* raw */ + sigstr_h = (cx24120_readreg(state, CX24120_REG_SIGSTR_H) >> 6) << 8; + sigstr_l = cx24120_readreg(state, CX24120_REG_SIGSTR_L); + dev_dbg(&state->i2c->dev, "%s: Signal strength from firmware= 0x%x\n", + __func__, (sigstr_h | sigstr_l)); + + /* cooked */ + *signal_strength = ((sigstr_h | sigstr_l) << 5) & 0x0000ffff; + dev_dbg(&state->i2c->dev, "%s: Signal strength= 0x%x\n", + __func__, *signal_strength); + + return 0; +} + + +static int cx24120_msg_mpeg_output_global_config(struct cx24120_state *state, + u8 enable) +{ + struct cx24120_cmd cmd; + int ret; + + cmd.id = CMD_MPEG_ONOFF; + cmd.len = 4; + cmd.arg[0] = 0x01; + cmd.arg[1] = 0x00; + cmd.arg[2] = enable ? 0 : (u8)(-1); + cmd.arg[3] = 0x01; + + ret = cx24120_message_send(state, &cmd); + if (ret != 0) { + dev_dbg(&state->i2c->dev, + "%s: Failed to set MPEG output to %s\n", + __func__, + (enable)?"enabled":"disabled"); + return ret; + } + + state->mpeg_enabled = enable; + dev_dbg(&state->i2c->dev, "%s: MPEG output %s\n", + __func__, + (enable)?"enabled":"disabled"); + + return 0; +} + + +static int cx24120_msg_mpeg_output_config(struct cx24120_state *state, u8 seq) +{ + struct cx24120_cmd cmd; + struct cx24120_initial_mpeg_config i = + state->config->initial_mpeg_config; + + cmd.id = CMD_MPEG_INIT; + cmd.len = 7; + cmd.arg[0] = seq; /* sequental number - can be 0,1,2 */ + cmd.arg[1] = ((i.x1 & 0x01) << 1) | ((i.x1 >> 1) & 0x01); + cmd.arg[2] = 0x05; + cmd.arg[3] = 0x02; + cmd.arg[4] = ((i.x2 >> 1) & 0x01); + cmd.arg[5] = (i.x2 & 0xf0) | (i.x3 & 0x0f); + cmd.arg[6] = 0x10; + + return cx24120_message_send(state, &cmd); +} + + +static int cx24120_diseqc_send_burst(struct dvb_frontend *fe, + fe_sec_mini_cmd_t burst) +{ + struct cx24120_state *state = fe->demodulator_priv; + struct cx24120_cmd cmd; + + /* Yes, cmd.len is set to zero. The old driver + * didn't specify any len, but also had a + * memset 0 before every use of the cmd struct + * which would have set it to zero. + * This quite probably needs looking into. + */ + cmd.id = CMD_DISEQC_BURST; + cmd.len = 0; + cmd.arg[0] = 0x00; + if (burst) + cmd.arg[1] = 0x01; + dev_dbg(&state->i2c->dev, "%s: burst sent.\n", __func__); + + return cx24120_message_send(state, &cmd); +} + + +static int cx24120_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone) +{ + struct cx24120_state *state = fe->demodulator_priv; + struct cx24120_cmd cmd; + + dev_dbg(&state->i2c->dev, "%s(%d)\n", + __func__, tone); + + if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) { + err("Invalid tone=%d\n", tone); + return -EINVAL; + } + + cmd.id = CMD_SETTONE; + cmd.len = 4; + cmd.arg[0] = 0x00; + cmd.arg[1] = 0x00; + cmd.arg[2] = 0x00; + cmd.arg[3] = (tone == SEC_TONE_ON)?0x01:0x00; + + return cx24120_message_send(state, &cmd); +} + + +static int cx24120_set_voltage(struct dvb_frontend *fe, + fe_sec_voltage_t voltage) +{ + struct cx24120_state *state = fe->demodulator_priv; + struct cx24120_cmd cmd; + + dev_dbg(&state->i2c->dev, "%s(%d)\n", + __func__, voltage); + + cmd.id = CMD_SETVOLTAGE; + cmd.len = 2; + cmd.arg[0] = 0x00; + cmd.arg[1] = (voltage == SEC_VOLTAGE_18)?0x01:0x00; + + return cx24120_message_send(state, &cmd); +} + + +static int cx24120_send_diseqc_msg(struct dvb_frontend *fe, + struct dvb_diseqc_master_cmd *d) +{ + struct cx24120_state *state = fe->demodulator_priv; + struct cx24120_cmd cmd; + int back_count; + + dev_dbg(&state->i2c->dev, "%s()\n", __func__); + + cmd.id = CMD_DISEQC_MSG1; + cmd.len = 11; + cmd.arg[0] = 0x00; + cmd.arg[1] = 0x00; + cmd.arg[2] = 0x03; + cmd.arg[3] = 0x16; + cmd.arg[4] = 0x28; + cmd.arg[5] = 0x01; + cmd.arg[6] = 0x01; + cmd.arg[7] = 0x14; + cmd.arg[8] = 0x19; + cmd.arg[9] = 0x14; + cmd.arg[10] = 0x1e; + + if (cx24120_message_send(state, &cmd)) { + err("send 1st message(0x%x) failed\n", cmd.id); + return -EREMOTEIO; + } + + cmd.id = CMD_DISEQC_MSG2; + cmd.len = d->msg_len + 6; + cmd.arg[0] = 0x00; + cmd.arg[1] = 0x01; + cmd.arg[2] = 0x02; + cmd.arg[3] = 0x00; + cmd.arg[4] = 0x00; + cmd.arg[5] = d->msg_len; + + memcpy(&cmd.arg[6], &d->msg, d->msg_len); + + if (cx24120_message_send(state, &cmd)) { + err("send 2nd message(0x%x) failed\n", cmd.id); + return -EREMOTEIO; + } + + back_count = 500; + do { + if (!(cx24120_readreg(state, 0x93) & 0x01)) { + dev_dbg(&state->i2c->dev, + "%s: diseqc sequence sent success\n", + __func__); + return 0; + } + msleep(20); + back_count -= 20; + } while (back_count); + + err("Too long waiting for diseqc.\n"); + return -ETIMEDOUT; +} + + +/* Read current tuning status */ +static int cx24120_read_status(struct dvb_frontend *fe, fe_status_t *status) +{ + struct cx24120_state *state = fe->demodulator_priv; + int lock; + + lock = cx24120_readreg(state, CX24120_REG_STATUS); + + dev_dbg(&state->i2c->dev, "%s() status = 0x%02x\n", + __func__, lock); + + *status = 0; + + if (lock & CX24120_HAS_SIGNAL) + *status = FE_HAS_SIGNAL; + if (lock & CX24120_HAS_CARRIER) + *status |= FE_HAS_CARRIER; + if (lock & CX24120_HAS_VITERBI) + *status |= FE_HAS_VITERBI | FE_HAS_SYNC; + if (lock & CX24120_HAS_LOCK) + *status |= FE_HAS_LOCK; + + /* TODO: is FE_HAS_SYNC in the right place? + * Other cx241xx drivers have this slightly + * different */ + + return 0; +} + + +/* FEC & modulation lookup table + * Used for decoding the REG_FECMODE register + * once tuned in. + */ +static struct cx24120_modfec { + fe_delivery_system_t delsys; + fe_modulation_t mod; + fe_code_rate_t fec; + u8 val; +} modfec_lookup_table[] = { +/*delsys mod fec val */ +{ SYS_DVBS, QPSK, FEC_1_2, 0x01 }, +{ SYS_DVBS, QPSK, FEC_2_3, 0x02 }, +{ SYS_DVBS, QPSK, FEC_3_4, 0x03 }, +{ SYS_DVBS, QPSK, FEC_4_5, 0x04 }, +{ SYS_DVBS, QPSK, FEC_5_6, 0x05 }, +{ SYS_DVBS, QPSK, FEC_6_7, 0x06 }, +{ SYS_DVBS, QPSK, FEC_7_8, 0x07 }, + +{ SYS_DVBS2, QPSK, FEC_1_2, 0x04 }, +{ SYS_DVBS2, QPSK, FEC_3_5, 0x05 }, +{ SYS_DVBS2, QPSK, FEC_2_3, 0x06 }, +{ SYS_DVBS2, QPSK, FEC_3_4, 0x07 }, +{ SYS_DVBS2, QPSK, FEC_4_5, 0x08 }, +{ SYS_DVBS2, QPSK, FEC_5_6, 0x09 }, +{ SYS_DVBS2, QPSK, FEC_8_9, 0x0a }, +{ SYS_DVBS2, QPSK, FEC_9_10, 0x0b }, + +{ SYS_DVBS2, PSK_8, FEC_3_5, 0x0c }, +{ SYS_DVBS2, PSK_8, FEC_2_3, 0x0d }, +{ SYS_DVBS2, PSK_8, FEC_3_4, 0x0e }, +{ SYS_DVBS2, PSK_8, FEC_5_6, 0x0f }, +{ SYS_DVBS2, PSK_8, FEC_8_9, 0x10 }, +{ SYS_DVBS2, PSK_8, FEC_9_10, 0x11 }, +}; + + +/* Retrieve current fec, modulation & pilot values */ +static int cx24120_get_fec(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + struct cx24120_state *state = fe->demodulator_priv; + int idx; + int ret; + int GettedFEC; + + dev_dbg(&state->i2c->dev, "%s()\n", __func__); + + ret = cx24120_readreg(state, CX24120_REG_FECMODE); + GettedFEC = ret & 0x3f; /* Lower 6 bits */ + + dev_dbg(&state->i2c->dev, "%s: Get FEC: %d\n", __func__, GettedFEC); + + for (idx = 0; idx < ARRAY_SIZE(modfec_lookup_table); idx++) { + if (modfec_lookup_table[idx].delsys != state->dcur.delsys) + continue; + if (modfec_lookup_table[idx].val != GettedFEC) + continue; + + break; /* found */ + } + + if (idx >= ARRAY_SIZE(modfec_lookup_table)) { + dev_dbg(&state->i2c->dev, "%s: Couldn't find fec!\n", + __func__); + return -EINVAL; + } + + /* save values back to cache */ + c->modulation = modfec_lookup_table[idx].mod; + c->fec_inner = modfec_lookup_table[idx].fec; + c->pilot = (ret & 0x80) ? PILOT_ON : PILOT_OFF; + + dev_dbg(&state->i2c->dev, + "%s: mod(%d), fec(%d), pilot(%d)\n", + __func__, + c->modulation, c->fec_inner, c->pilot); + + return 0; +} + + +/* Clock ratios lookup table + * + * Values obtained from much larger table in old driver + * which had numerous entries which would never match. + * + * There's probably some way of calculating these but I + * can't determine the pattern +*/ +static struct cx24120_clock_ratios_table { + fe_delivery_system_t delsys; + fe_pilot_t pilot; + fe_modulation_t mod; + fe_code_rate_t fec; + u32 m_rat; + u32 n_rat; + u32 rate; +} clock_ratios_table[] = { +/*delsys pilot mod fec m_rat n_rat rate */ +{ SYS_DVBS2, PILOT_OFF, QPSK, FEC_1_2, 273088, 254505, 274 }, +{ SYS_DVBS2, PILOT_OFF, QPSK, FEC_3_5, 17272, 13395, 330 }, +{ SYS_DVBS2, PILOT_OFF, QPSK, FEC_2_3, 24344, 16967, 367 }, +{ SYS_DVBS2, PILOT_OFF, QPSK, FEC_3_4, 410788, 254505, 413 }, +{ SYS_DVBS2, PILOT_OFF, QPSK, FEC_4_5, 438328, 254505, 440 }, +{ SYS_DVBS2, PILOT_OFF, QPSK, FEC_5_6, 30464, 16967, 459 }, +{ SYS_DVBS2, PILOT_OFF, QPSK, FEC_8_9, 487832, 254505, 490 }, +{ SYS_DVBS2, PILOT_OFF, QPSK, FEC_9_10, 493952, 254505, 496 }, +{ SYS_DVBS2, PILOT_OFF, PSK_8, FEC_3_5, 328168, 169905, 494 }, +{ SYS_DVBS2, PILOT_OFF, PSK_8, FEC_2_3, 24344, 11327, 550 }, +{ SYS_DVBS2, PILOT_OFF, PSK_8, FEC_3_4, 410788, 169905, 618 }, +{ SYS_DVBS2, PILOT_OFF, PSK_8, FEC_5_6, 30464, 11327, 688 }, +{ SYS_DVBS2, PILOT_OFF, PSK_8, FEC_8_9, 487832, 169905, 735 }, +{ SYS_DVBS2, PILOT_OFF, PSK_8, FEC_9_10, 493952, 169905, 744 }, +{ SYS_DVBS2, PILOT_ON, QPSK, FEC_1_2, 273088, 260709, 268 }, +{ SYS_DVBS2, PILOT_ON, QPSK, FEC_3_5, 328168, 260709, 322 }, +{ SYS_DVBS2, PILOT_ON, QPSK, FEC_2_3, 121720, 86903, 358 }, +{ SYS_DVBS2, PILOT_ON, QPSK, FEC_3_4, 410788, 260709, 403 }, +{ SYS_DVBS2, PILOT_ON, QPSK, FEC_4_5, 438328, 260709, 430 }, +{ SYS_DVBS2, PILOT_ON, QPSK, FEC_5_6, 152320, 86903, 448 }, +{ SYS_DVBS2, PILOT_ON, QPSK, FEC_8_9, 487832, 260709, 479 }, +{ SYS_DVBS2, PILOT_ON, QPSK, FEC_9_10, 493952, 260709, 485 }, +{ SYS_DVBS2, PILOT_ON, PSK_8, FEC_3_5, 328168, 173853, 483 }, +{ SYS_DVBS2, PILOT_ON, PSK_8, FEC_2_3, 121720, 57951, 537 }, +{ SYS_DVBS2, PILOT_ON, PSK_8, FEC_3_4, 410788, 173853, 604 }, +{ SYS_DVBS2, PILOT_ON, PSK_8, FEC_5_6, 152320, 57951, 672 }, +{ SYS_DVBS2, PILOT_ON, PSK_8, FEC_8_9, 487832, 173853, 718 }, +{ SYS_DVBS2, PILOT_ON, PSK_8, FEC_9_10, 493952, 173853, 727 }, +{ SYS_DVBS, PILOT_OFF, QPSK, FEC_1_2, 152592, 152592, 256 }, +{ SYS_DVBS, PILOT_OFF, QPSK, FEC_2_3, 305184, 228888, 341 }, +{ SYS_DVBS, PILOT_OFF, QPSK, FEC_3_4, 457776, 305184, 384 }, +{ SYS_DVBS, PILOT_OFF, QPSK, FEC_5_6, 762960, 457776, 427 }, +{ SYS_DVBS, PILOT_OFF, QPSK, FEC_7_8, 1068144, 610368, 448 }, +}; + + +/* Set clock ratio from lookup table */ +static void cx24120_set_clock_ratios(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + struct cx24120_state *state = fe->demodulator_priv; + struct cx24120_cmd cmd; + int ret, idx; + + /* Find fec, modulation, pilot */ + ret = cx24120_get_fec(fe); + if (ret != 0) + return; + + /* Find the clock ratios in the lookup table */ + for (idx = 0; idx < ARRAY_SIZE(clock_ratios_table); idx++) { + if (clock_ratios_table[idx].delsys != state->dcur.delsys) + continue; + if (clock_ratios_table[idx].mod != c->modulation) + continue; + if (clock_ratios_table[idx].fec != c->fec_inner) + continue; + if (clock_ratios_table[idx].pilot != c->pilot) + continue; + + break; /* found */ + } + + if (idx >= ARRAY_SIZE(clock_ratios_table)) { + info("Clock ratio not found - data reception in danger\n"); + return; + } + + + /* Read current values? */ + cmd.id = CMD_CLOCK_READ; + cmd.len = 1; + cmd.arg[0] = 0x00; + ret = cx24120_message_sendrcv(state, &cmd, 6); + if (ret != 0) + return; + /* in cmd[0]-[5] - result */ + + dev_dbg(&state->i2c->dev, + "%s: m=%d, n=%d; idx: %d m=%d, n=%d, rate=%d\n", + __func__, + cmd.arg[2] | (cmd.arg[1] << 8) | (cmd.arg[0] << 16), + cmd.arg[5] | (cmd.arg[4] << 8) | (cmd.arg[3] << 16), + idx, + clock_ratios_table[idx].m_rat, + clock_ratios_table[idx].n_rat, + clock_ratios_table[idx].rate); + + + + /* Set the clock */ + cmd.id = CMD_CLOCK_SET; + cmd.len = 10; + cmd.arg[0] = 0; + cmd.arg[1] = 0x10; + cmd.arg[2] = (clock_ratios_table[idx].m_rat >> 16) & 0xff; + cmd.arg[3] = (clock_ratios_table[idx].m_rat >> 8) & 0xff; + cmd.arg[4] = (clock_ratios_table[idx].m_rat >> 0) & 0xff; + cmd.arg[5] = (clock_ratios_table[idx].n_rat >> 16) & 0xff; + cmd.arg[6] = (clock_ratios_table[idx].n_rat >> 8) & 0xff; + cmd.arg[7] = (clock_ratios_table[idx].n_rat >> 0) & 0xff; + cmd.arg[8] = (clock_ratios_table[idx].rate >> 8) & 0xff; + cmd.arg[9] = (clock_ratios_table[idx].rate >> 0) & 0xff; + + cx24120_message_send(state, &cmd); + +} + + +/* Set inversion value */ +static int cx24120_set_inversion(struct cx24120_state *state, + fe_spectral_inversion_t inversion) +{ + dev_dbg(&state->i2c->dev, "%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; +} + +/* FEC lookup table for tuning + * Some DVB-S2 val's have been found by trial + * and error. Sofar it seems to match up with + * the contents of the REG_FECMODE after tuning + * The rest will probably be the same but would + * need testing. + * Anything not in the table will run with + * FEC_AUTO and take a while longer to tune in + * ( c.500ms instead of 30ms ) + */ +static struct cx24120_modfec_table { + fe_delivery_system_t delsys; + fe_modulation_t mod; + fe_code_rate_t fec; + u8 val; +} modfec_table[] = { +/*delsys mod fec val */ +{ SYS_DVBS, QPSK, FEC_1_2, 0x2e }, +{ SYS_DVBS, QPSK, FEC_2_3, 0x2f }, +{ SYS_DVBS, QPSK, FEC_3_4, 0x30 }, +{ SYS_DVBS, QPSK, FEC_5_6, 0x31 }, +{ SYS_DVBS, QPSK, FEC_6_7, 0x32 }, +{ SYS_DVBS, QPSK, FEC_7_8, 0x33 }, + +{ SYS_DVBS2, QPSK, FEC_3_4, 0x07 }, + +{ SYS_DVBS2, PSK_8, FEC_2_3, 0x0d }, +{ SYS_DVBS2, PSK_8, FEC_3_4, 0x0e }, +}; + +/* Set fec_val & fec_mask values from delsys, modulation & fec */ +static int cx24120_set_fec(struct cx24120_state *state, + fe_modulation_t mod, fe_code_rate_t fec) +{ + int idx; + + dev_dbg(&state->i2c->dev, + "%s(0x%02x,0x%02x)\n", __func__, mod, fec); + + state->dnxt.fec = fec; + + /* Lookup fec_val from modfec table */ + for (idx = 0; idx < ARRAY_SIZE(modfec_table); idx++) { + if (modfec_table[idx].delsys != state->dnxt.delsys) + continue; + if (modfec_table[idx].mod != mod) + continue; + if (modfec_table[idx].fec != fec) + continue; + + /* found */ + state->dnxt.fec_mask = 0x00; + state->dnxt.fec_val = modfec_table[idx].val; + return 0; + } + + + if (state->dnxt.delsys == SYS_DVBS2) { + /* DVBS2 auto is 0x00/0x00 */ + state->dnxt.fec_mask = 0x00; + state->dnxt.fec_val = 0x00; + } else { + /* Set DVB-S to auto */ + state->dnxt.fec_val = 0x2e; + state->dnxt.fec_mask = 0xac; + } + + return 0; +} + + +/* Set pilot */ +static int cx24120_set_pilot(struct cx24120_state *state, + fe_pilot_t pilot) { + + dev_dbg(&state->i2c->dev, + "%s(%d)\n", __func__, pilot); + + /* Pilot only valid in DVBS2 */ + if (state->dnxt.delsys != SYS_DVBS2) { + state->dnxt.pilot_val = CX24120_PILOT_OFF; + return 0; + } + + + switch (pilot) { + case PILOT_OFF: + state->dnxt.pilot_val = CX24120_PILOT_OFF; + break; + case PILOT_ON: + state->dnxt.pilot_val = CX24120_PILOT_ON; + break; + case PILOT_AUTO: + default: + state->dnxt.pilot_val = CX24120_PILOT_AUTO; + } + + return 0; +} + +/* Set symbol rate */ +static int cx24120_set_symbolrate(struct cx24120_state *state, u32 rate) +{ + dev_dbg(&state->i2c->dev, "%s(%d)\n", + __func__, rate); + + state->dnxt.symbol_rate = rate; + + /* Check symbol rate */ + if (rate > 31000000) { + state->dnxt.clkdiv = (-(rate < 31000001) & 3) + 2; + state->dnxt.ratediv = (-(rate < 31000001) & 6) + 4; + } else { + state->dnxt.clkdiv = 3; + state->dnxt.ratediv = 6; + } + + return 0; +} + + +/* Overwrite the current tuning params, we are about to tune */ +static void cx24120_clone_params(struct dvb_frontend *fe) +{ + struct cx24120_state *state = fe->demodulator_priv; + + state->dcur = state->dnxt; +} + + +/* Table of time to tune for different symrates */ +static struct cx24120_symrate_delay { + fe_delivery_system_t delsys; + u32 symrate; /* Check for >= this symrate */ + u32 delay; /* Timeout in ms */ +} symrates_delay_table[] = { +{ SYS_DVBS, 10000000, 400 }, +{ SYS_DVBS, 8000000, 2000 }, +{ SYS_DVBS, 6000000, 5000 }, +{ SYS_DVBS, 3000000, 10000 }, +{ SYS_DVBS, 0, 15000 }, +{ SYS_DVBS2, 10000000, 600 }, /* DVBS2 needs a little longer */ +{ SYS_DVBS2, 8000000, 2000 }, /* (so these might need bumping too) */ +{ SYS_DVBS2, 6000000, 5000 }, +{ SYS_DVBS2, 3000000, 10000 }, +{ SYS_DVBS2, 0, 15000 }, +}; + + +static int cx24120_set_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + struct cx24120_state *state = fe->demodulator_priv; + struct cx24120_cmd cmd; + int ret; + int delay_cnt, sd_idx = 0; + fe_status_t status; + + switch (c->delivery_system) { + case SYS_DVBS2: + dev_dbg(&state->i2c->dev, "%s() DVB-S2\n", + __func__); + break; + case SYS_DVBS: + dev_dbg(&state->i2c->dev, "%s() DVB-S\n", + __func__); + break; + default: + dev_dbg(&state->i2c->dev, + "%s() Delivery system(%d) not supported\n", + __func__, c->delivery_system); + ret = -EINVAL; + break; + } + + + state->dnxt.delsys = c->delivery_system; + state->dnxt.modulation = c->modulation; + state->dnxt.frequency = c->frequency; + state->dnxt.pilot = c->pilot; + + ret = cx24120_set_inversion(state, c->inversion); + if (ret != 0) + return ret; + + ret = cx24120_set_fec(state, c->modulation, c->fec_inner); + if (ret != 0) + return ret; + + ret = cx24120_set_pilot(state, c->pilot); + if (ret != 0) + return ret; + + ret = cx24120_set_symbolrate(state, c->symbol_rate); + if (ret != 0) + return ret; + + + /* discard the 'current' tuning parameters and prepare to tune */ + cx24120_clone_params(fe); + + dev_dbg(&state->i2c->dev, + "%s: delsys = %d\n", __func__, state->dcur.delsys); + dev_dbg(&state->i2c->dev, + "%s: modulation = %d\n", __func__, state->dcur.modulation); + dev_dbg(&state->i2c->dev, + "%s: frequency = %d\n", __func__, state->dcur.frequency); + dev_dbg(&state->i2c->dev, + "%s: pilot = %d (val = 0x%02x)\n", __func__, + state->dcur.pilot, state->dcur.pilot_val); + dev_dbg(&state->i2c->dev, + "%s: symbol_rate = %d (clkdiv/ratediv = 0x%02x/0x%02x)\n", + __func__, state->dcur.symbol_rate, + state->dcur.clkdiv, state->dcur.ratediv); + dev_dbg(&state->i2c->dev, + "%s: FEC = %d (mask/val = 0x%02x/0x%02x)\n", __func__, + state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val); + dev_dbg(&state->i2c->dev, + "%s: Inversion = %d (val = 0x%02x)\n", __func__, + state->dcur.inversion, state->dcur.inversion_val); + + + + /* Tune in */ + cmd.id = CMD_TUNEREQUEST; + cmd.len = 15; + cmd.arg[0] = 0; + cmd.arg[1] = (state->dcur.frequency & 0xff0000) >> 16; + cmd.arg[2] = (state->dcur.frequency & 0x00ff00) >> 8; + cmd.arg[3] = (state->dcur.frequency & 0x0000ff); + cmd.arg[4] = ((state->dcur.symbol_rate/1000) & 0xff00) >> 8; + cmd.arg[5] = ((state->dcur.symbol_rate/1000) & 0x00ff); + cmd.arg[6] = state->dcur.inversion; + cmd.arg[7] = state->dcur.fec_val | state->dcur.pilot_val; + cmd.arg[8] = CX24120_SEARCH_RANGE_KHZ >> 8; + cmd.arg[9] = CX24120_SEARCH_RANGE_KHZ & 0xff; + cmd.arg[10] = 0; /* maybe rolloff? */ + cmd.arg[11] = state->dcur.fec_mask; + cmd.arg[12] = state->dcur.ratediv; + cmd.arg[13] = state->dcur.clkdiv; + cmd.arg[14] = 0; + + + /* Send tune command */ + ret = cx24120_message_send(state, &cmd); + if (ret != 0) + return ret; + + /* Write symbol rate values */ + ret = cx24120_writereg(state, CX24120_REG_CLKDIV, state->dcur.clkdiv); + ret = cx24120_readreg(state, CX24120_REG_RATEDIV); + ret &= 0xfffffff0; + ret |= state->dcur.ratediv; + ret = cx24120_writereg(state, CX24120_REG_RATEDIV, ret); + + /* Default time to tune */ + delay_cnt = 500; + + /* Establish time to tune from symrates_delay_table */ + for (sd_idx = 0; sd_idx < ARRAY_SIZE(symrates_delay_table); sd_idx++) { + if (state->dcur.delsys != symrates_delay_table[sd_idx].delsys) + continue; + if (c->symbol_rate < symrates_delay_table[sd_idx].symrate) + continue; + + /* found */ + delay_cnt = symrates_delay_table[sd_idx].delay; + dev_dbg(&state->i2c->dev, "%s: Found symrate delay = %d\n", + __func__, delay_cnt); + break; + } + + /* Wait for tuning */ + while (delay_cnt >= 0) { + cx24120_read_status(fe, &status); + if (status & FE_HAS_LOCK) + goto tuned; + msleep(20); + delay_cnt -= 20; + } + + + /* Fail to tune */ + dev_dbg(&state->i2c->dev, "%s: Tuning failed\n", + __func__); + + return -EINVAL; + + +tuned: + dev_dbg(&state->i2c->dev, "%s: Tuning successful\n", + __func__); + + /* Set clock ratios */ + cx24120_set_clock_ratios(fe); + + /* Old driver would do a msleep(200) here */ + + /* Renable mpeg output */ + if (!state->mpeg_enabled) + cx24120_msg_mpeg_output_global_config(state, 1); + + return 0; +} + + +/* Calculate vco from config */ +static u64 cx24120_calculate_vco(struct cx24120_state *state) +{ + u32 vco; + u64 inv_vco, res, xxyyzz; + u32 xtal_khz = state->config->xtal_khz; + + xxyyzz = 0x400000000ULL; + vco = xtal_khz * 10 * 4; + inv_vco = xxyyzz / vco; + res = xxyyzz % vco; + + if (inv_vco > xtal_khz * 10 * 2) + ++inv_vco; + + dev_dbg(&state->i2c->dev, + "%s: xtal=%d, vco=%d, inv_vco=%lld, res=%lld\n", + __func__, xtal_khz, vco, inv_vco, res); + + return inv_vco; +} + + +int cx24120_init(struct dvb_frontend *fe) +{ + const struct firmware *fw; + struct cx24120_state *state = fe->demodulator_priv; + struct cx24120_cmd cmd; + u8 ret, ret_EA, reg1; + u64 inv_vco; + int reset_result; + + int i; + unsigned char vers[4]; + + if (state->cold_init) + return 0; + + /* ???? */ + ret = cx24120_writereg(state, 0xea, 0x00); + ret = cx24120_test_rom(state); + ret = cx24120_readreg(state, 0xfb) & 0xfe; + ret = cx24120_writereg(state, 0xfb, ret); + ret = cx24120_readreg(state, 0xfc) & 0xfe; + ret = cx24120_writereg(state, 0xfc, ret); + ret = cx24120_writereg(state, 0xc3, 0x04); + ret = cx24120_writereg(state, 0xc4, 0x04); + ret = cx24120_writereg(state, 0xce, 0x00); + ret = cx24120_writereg(state, 0xcf, 0x00); + ret_EA = cx24120_readreg(state, 0xea) & 0xfe; + ret = cx24120_writereg(state, 0xea, ret_EA); + ret = cx24120_writereg(state, 0xeb, 0x0c); + ret = cx24120_writereg(state, 0xec, 0x06); + ret = cx24120_writereg(state, 0xed, 0x05); + ret = cx24120_writereg(state, 0xee, 0x03); + ret = cx24120_writereg(state, 0xef, 0x05); + ret = cx24120_writereg(state, 0xf3, 0x03); + ret = cx24120_writereg(state, 0xf4, 0x44); + + for (reg1 = 0xf0; reg1 < 0xf3; reg1++) { + cx24120_writereg(state, reg1, 0x04); + cx24120_writereg(state, reg1 - 10, 0x02); + } + + ret = cx24120_writereg(state, 0xea, (ret_EA | 0x01)); + for (reg1 = 0xc5; reg1 < 0xcb; reg1 += 2) { + ret = cx24120_writereg(state, reg1, 0x00); + ret = cx24120_writereg(state, reg1 + 1, 0x00); + } + + ret = cx24120_writereg(state, 0xe4, 0x03); + ret = cx24120_writereg(state, 0xeb, 0x0a); + + dev_dbg(&state->i2c->dev, + "%s: Requesting firmware (%s) to download...\n", + __func__, CX24120_FIRMWARE); + + ret = state->config->request_firmware(fe, &fw, CX24120_FIRMWARE); + if (ret) { + err("Could not load firmware (%s): %d\n", + CX24120_FIRMWARE, ret); + return ret; + } + + dev_dbg(&state->i2c->dev, + "%s: Firmware found, size %d bytes (%02x %02x .. %02x %02x)\n", + __func__, + (int)fw->size, /* firmware_size in bytes */ + fw->data[0], /* fw 1st byte */ + fw->data[1], /* fw 2d byte */ + fw->data[fw->size - 2], /* fw before last byte */ + fw->data[fw->size - 1]); /* fw last byte */ + + ret = cx24120_test_rom(state); + ret = cx24120_readreg(state, 0xfb) & 0xfe; + ret = cx24120_writereg(state, 0xfb, ret); + ret = cx24120_writereg(state, 0xe0, 0x76); + ret = cx24120_writereg(state, 0xf7, 0x81); + ret = cx24120_writereg(state, 0xf8, 0x00); + ret = cx24120_writereg(state, 0xf9, 0x00); + ret = cx24120_writeregN(state, 0xfa, fw->data, (fw->size - 1), 0x00); + ret = cx24120_writereg(state, 0xf7, 0xc0); + ret = cx24120_writereg(state, 0xe0, 0x00); + ret = (fw->size - 2) & 0x00ff; + ret = cx24120_writereg(state, 0xf8, ret); + ret = ((fw->size - 2) >> 8) & 0x00ff; + ret = cx24120_writereg(state, 0xf9, ret); + ret = cx24120_writereg(state, 0xf7, 0x00); + ret = cx24120_writereg(state, 0xdc, 0x00); + ret = cx24120_writereg(state, 0xdc, 0x07); + msleep(500); + + /* Check final byte matches final byte of firmware */ + ret = cx24120_readreg(state, 0xe1); + if (ret == fw->data[fw->size - 1]) { + dev_dbg(&state->i2c->dev, + "%s: Firmware uploaded successfully\n", + __func__); + reset_result = 0; + } else { + err("Firmware upload failed. Last byte returned=0x%x\n", ret); + reset_result = -EREMOTEIO; + } + ret = cx24120_writereg(state, 0xdc, 0x00); + release_firmware(fw); + if (reset_result != 0) + return reset_result; + + + /* Start tuner */ + cmd.id = CMD_START_TUNER; + cmd.len = 3; + cmd.arg[0] = 0x00; + cmd.arg[1] = 0x00; + cmd.arg[2] = 0x00; + + if (cx24120_message_send(state, &cmd) != 0) { + err("Error tuner start! :(\n"); + return -EREMOTEIO; + } + + /* Set VCO */ + inv_vco = cx24120_calculate_vco(state); + + cmd.id = CMD_VCO_SET; + cmd.len = 12; + cmd.arg[0] = 0x06; + cmd.arg[1] = 0x2b; + cmd.arg[2] = 0xd8; + cmd.arg[3] = (inv_vco >> 8) & 0xff; + cmd.arg[4] = (inv_vco) & 0xff; + cmd.arg[5] = 0x03; + cmd.arg[6] = 0x9d; + cmd.arg[7] = 0xfc; + cmd.arg[8] = 0x06; + cmd.arg[9] = 0x03; + cmd.arg[10] = 0x27; + cmd.arg[11] = 0x7f; + + if (cx24120_message_send(state, &cmd)) { + err("Error set VCO! :(\n"); + return -EREMOTEIO; + } + + + /* set bandwidth */ + cmd.id = CMD_BANDWIDTH; + cmd.len = 12; + cmd.arg[0] = 0x00; + cmd.arg[1] = 0x00; + cmd.arg[2] = 0x00; + cmd.arg[3] = 0x00; + cmd.arg[4] = 0x05; + cmd.arg[5] = 0x02; + cmd.arg[6] = 0x02; + cmd.arg[7] = 0x00; + cmd.arg[8] = 0x05; + cmd.arg[9] = 0x02; + cmd.arg[10] = 0x02; + cmd.arg[11] = 0x00; + + if (cx24120_message_send(state, &cmd)) { + err("Error set bandwidth!\n"); + return -EREMOTEIO; + } + + ret = cx24120_readreg(state, 0xba); + if (ret > 3) { + dev_dbg(&state->i2c->dev, "%s: Reset-readreg 0xba: %x\n", + __func__, ret); + err("Error initialising tuner!\n"); + return -EREMOTEIO; + } + + dev_dbg(&state->i2c->dev, "%s: Tuner initialised correctly.\n", + __func__); + + + /* Initialise mpeg outputs */ + ret = cx24120_writereg(state, 0xeb, 0x0a); + if (cx24120_msg_mpeg_output_global_config(state, 0) || + cx24120_msg_mpeg_output_config(state, 0) || + cx24120_msg_mpeg_output_config(state, 1) || + cx24120_msg_mpeg_output_config(state, 2)) { + err("Error initialising mpeg output. :(\n"); + return -EREMOTEIO; + } + + + /* ???? */ + cmd.id = CMD_TUNER_INIT; + cmd.len = 3; + cmd.arg[0] = 0x00; + cmd.arg[1] = 0x10; + cmd.arg[2] = 0x10; + if (cx24120_message_send(state, &cmd)) { + err("Error sending final init message. :(\n"); + return -EREMOTEIO; + } + + + /* Firmware CMD 35: Get firmware version */ + cmd.id = CMD_FWVERSION; + cmd.len = 1; + for (i = 0; i < 4; i++) { + cmd.arg[0] = i; + ret = cx24120_message_send(state, &cmd); + if (ret != 0) + return ret; + vers[i] = cx24120_readreg(state, CX24120_REG_MAILBOX); + } + info("FW version %i.%i.%i.%i\n", vers[0], vers[1], vers[2], vers[3]); + + + state->cold_init = 1; + return 0; +} + + +static int cx24120_tune(struct dvb_frontend *fe, bool re_tune, + unsigned int mode_flags, unsigned int *delay, fe_status_t *status) +{ + struct cx24120_state *state = fe->demodulator_priv; + int ret; + + dev_dbg(&state->i2c->dev, "%s(%d)\n", __func__, re_tune); + + /* TODO: Do we need to set delay? */ + + if (re_tune) { + ret = cx24120_set_frontend(fe); + if (ret) + return ret; + } + + return cx24120_read_status(fe, status); +} + + + +static int cx24120_get_algo(struct dvb_frontend *fe) +{ + return DVBFE_ALGO_HW; +} + + +static int cx24120_sleep(struct dvb_frontend *fe) +{ + return 0; +} + + +/*static int cx24120_wakeup(struct dvb_frontend *fe) + * { + * return 0; + * } +*/ + + +static int cx24120_get_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + struct cx24120_state *state = fe->demodulator_priv; + u8 freq1, freq2, freq3; + + dev_dbg(&state->i2c->dev, "%s()", __func__); + + /* don't return empty data if we're not tuned in */ + if (state->mpeg_enabled) + return 0; + + /* Get frequency */ + freq1 = cx24120_readreg(state, CX24120_REG_FREQ1); + freq2 = cx24120_readreg(state, CX24120_REG_FREQ2); + freq3 = cx24120_readreg(state, CX24120_REG_FREQ3); + c->frequency = (freq3 << 16) | (freq2 << 8) | freq1; + dev_dbg(&state->i2c->dev, "%s frequency = %d\n", __func__, + c->frequency); + + /* Get modulation, fec, pilot */ + cx24120_get_fec(fe); + + return 0; +} + + +static void cx24120_release(struct dvb_frontend *fe) +{ + struct cx24120_state *state = fe->demodulator_priv; + + dev_dbg(&state->i2c->dev, "%s: Clear state structure\n", __func__); + kfree(state); +} + + +static int cx24120_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + struct cx24120_state *state = fe->demodulator_priv; + + *ucblocks = (cx24120_readreg(state, CX24120_REG_UCB_H) << 8) | + cx24120_readreg(state, CX24120_REG_UCB_L); + + dev_dbg(&state->i2c->dev, "%s: Blocks = %d\n", + __func__, *ucblocks); + return 0; +} + + +static struct dvb_frontend_ops cx24120_ops = { + .delsys = { SYS_DVBS, SYS_DVBS2 }, + .info = { + .name = "Conexant CX24120/CX24118", + .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_2G_MODULATION | + FE_CAN_QPSK | FE_CAN_RECOVER + }, + .release = cx24120_release, + + .init = cx24120_init, + .sleep = cx24120_sleep, + + .tune = cx24120_tune, + .get_frontend_algo = cx24120_get_algo, + .set_frontend = cx24120_set_frontend, + + .get_frontend = cx24120_get_frontend, + .read_status = cx24120_read_status, + .read_ber = cx24120_read_ber, + .read_signal_strength = cx24120_read_signal_strength, + .read_snr = cx24120_read_snr, + .read_ucblocks = cx24120_read_ucblocks, + + .diseqc_send_master_cmd = cx24120_send_diseqc_msg, + + .diseqc_send_burst = cx24120_diseqc_send_burst, + .set_tone = cx24120_set_tone, + .set_voltage = cx24120_set_voltage, +}; + +MODULE_DESCRIPTION("DVB Frontend module for Conexant CX24120/CX24118 hardware"); +MODULE_AUTHOR("Jemma Denson"); +MODULE_LICENSE("GPL"); |