diff options
Diffstat (limited to 'drivers/media/dvb/frontends/nxt6000.c')
| -rw-r--r-- | drivers/media/dvb/frontends/nxt6000.c | 616 |
1 files changed, 0 insertions, 616 deletions
diff --git a/drivers/media/dvb/frontends/nxt6000.c b/drivers/media/dvb/frontends/nxt6000.c deleted file mode 100644 index 90ae6c7..0000000 --- a/drivers/media/dvb/frontends/nxt6000.c +++ /dev/null @@ -1,616 +0,0 @@ -/* - NxtWave Communications - NXT6000 demodulator driver - - Copyright (C) 2002-2003 Florian Schirmer <jolt@tuxbox.org> - Copyright (C) 2003 Paul Andreassen <paul@andreassen.com.au> - - 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/init.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/string.h> -#include <linux/slab.h> - -#include "dvb_frontend.h" -#include "nxt6000_priv.h" -#include "nxt6000.h" - - - -struct nxt6000_state { - struct i2c_adapter* i2c; - /* configuration settings */ - const struct nxt6000_config* config; - struct dvb_frontend frontend; -}; - -static int debug; -#define dprintk if (debug) printk - -static int nxt6000_writereg(struct nxt6000_state* state, u8 reg, u8 data) -{ - u8 buf[] = { reg, data }; - struct i2c_msg msg = {.addr = state->config->demod_address,.flags = 0,.buf = buf,.len = 2 }; - int ret; - - if ((ret = i2c_transfer(state->i2c, &msg, 1)) != 1) - dprintk("nxt6000: nxt6000_write error (reg: 0x%02X, data: 0x%02X, ret: %d)\n", reg, data, ret); - - return (ret != 1) ? -EIO : 0; -} - -static u8 nxt6000_readreg(struct nxt6000_state* state, u8 reg) -{ - int ret; - u8 b0[] = { reg }; - u8 b1[] = { 0 }; - struct i2c_msg msgs[] = { - {.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, msgs, 2); - - if (ret != 2) - dprintk("nxt6000: nxt6000_read error (reg: 0x%02X, ret: %d)\n", reg, ret); - - return b1[0]; -} - -static void nxt6000_reset(struct nxt6000_state* state) -{ - u8 val; - - val = nxt6000_readreg(state, OFDM_COR_CTL); - - nxt6000_writereg(state, OFDM_COR_CTL, val & ~COREACT); - nxt6000_writereg(state, OFDM_COR_CTL, val | COREACT); -} - -static int nxt6000_set_bandwidth(struct nxt6000_state *state, u32 bandwidth) -{ - u16 nominal_rate; - int result; - - switch (bandwidth) { - case 6000000: - nominal_rate = 0x55B7; - break; - - case 7000000: - nominal_rate = 0x6400; - break; - - case 8000000: - nominal_rate = 0x7249; - break; - - default: - return -EINVAL; - } - - if ((result = nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_1, nominal_rate & 0xFF)) < 0) - return result; - - return nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_2, (nominal_rate >> 8) & 0xFF); -} - -static int nxt6000_set_guard_interval(struct nxt6000_state* state, fe_guard_interval_t guard_interval) -{ - switch (guard_interval) { - - case GUARD_INTERVAL_1_32: - return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x00 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); - - case GUARD_INTERVAL_1_16: - return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x01 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); - - case GUARD_INTERVAL_AUTO: - case GUARD_INTERVAL_1_8: - return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x02 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); - - case GUARD_INTERVAL_1_4: - return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x03 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); - - default: - return -EINVAL; - } -} - -static int nxt6000_set_inversion(struct nxt6000_state* state, fe_spectral_inversion_t inversion) -{ - switch (inversion) { - - case INVERSION_OFF: - return nxt6000_writereg(state, OFDM_ITB_CTL, 0x00); - - case INVERSION_ON: - return nxt6000_writereg(state, OFDM_ITB_CTL, ITBINV); - - default: - return -EINVAL; - - } -} - -static int nxt6000_set_transmission_mode(struct nxt6000_state* state, fe_transmit_mode_t transmission_mode) -{ - int result; - - switch (transmission_mode) { - - case TRANSMISSION_MODE_2K: - if ((result = nxt6000_writereg(state, EN_DMD_RACQ, 0x00 | (nxt6000_readreg(state, EN_DMD_RACQ) & ~0x03))) < 0) - return result; - - return nxt6000_writereg(state, OFDM_COR_MODEGUARD, (0x00 << 2) | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x04)); - - case TRANSMISSION_MODE_8K: - case TRANSMISSION_MODE_AUTO: - if ((result = nxt6000_writereg(state, EN_DMD_RACQ, 0x02 | (nxt6000_readreg(state, EN_DMD_RACQ) & ~0x03))) < 0) - return result; - - return nxt6000_writereg(state, OFDM_COR_MODEGUARD, (0x01 << 2) | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x04)); - - default: - return -EINVAL; - - } -} - -static void nxt6000_setup(struct dvb_frontend* fe) -{ - struct nxt6000_state* state = fe->demodulator_priv; - - nxt6000_writereg(state, RS_COR_SYNC_PARAM, SYNC_PARAM); - nxt6000_writereg(state, BER_CTRL, /*(1 << 2) | */ (0x01 << 1) | 0x01); - nxt6000_writereg(state, VIT_BERTIME_2, 0x00); // BER Timer = 0x000200 * 256 = 131072 bits - nxt6000_writereg(state, VIT_BERTIME_1, 0x02); // - nxt6000_writereg(state, VIT_BERTIME_0, 0x00); // - nxt6000_writereg(state, VIT_COR_INTEN, 0x98); // Enable BER interrupts - nxt6000_writereg(state, VIT_COR_CTL, 0x82); // Enable BER measurement - nxt6000_writereg(state, VIT_COR_CTL, VIT_COR_RESYNC | 0x02 ); - nxt6000_writereg(state, OFDM_COR_CTL, (0x01 << 5) | (nxt6000_readreg(state, OFDM_COR_CTL) & 0x0F)); - nxt6000_writereg(state, OFDM_COR_MODEGUARD, FORCEMODE8K | 0x02); - nxt6000_writereg(state, OFDM_AGC_CTL, AGCLAST | INITIAL_AGC_BW); - nxt6000_writereg(state, OFDM_ITB_FREQ_1, 0x06); - nxt6000_writereg(state, OFDM_ITB_FREQ_2, 0x31); - nxt6000_writereg(state, OFDM_CAS_CTL, (0x01 << 7) | (0x02 << 3) | 0x04); - nxt6000_writereg(state, CAS_FREQ, 0xBB); /* CHECKME */ - nxt6000_writereg(state, OFDM_SYR_CTL, 1 << 2); - nxt6000_writereg(state, OFDM_PPM_CTL_1, PPM256); - nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_1, 0x49); - nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_2, 0x72); - nxt6000_writereg(state, ANALOG_CONTROL_0, 1 << 5); - nxt6000_writereg(state, EN_DMD_RACQ, (1 << 7) | (3 << 4) | 2); - nxt6000_writereg(state, DIAG_CONFIG, TB_SET); - - if (state->config->clock_inversion) - nxt6000_writereg(state, SUB_DIAG_MODE_SEL, CLKINVERSION); - else - nxt6000_writereg(state, SUB_DIAG_MODE_SEL, 0); - - nxt6000_writereg(state, TS_FORMAT, 0); -} - -static void nxt6000_dump_status(struct nxt6000_state *state) -{ - u8 val; - -/* - printk("RS_COR_STAT: 0x%02X\n", nxt6000_readreg(fe, RS_COR_STAT)); - printk("VIT_SYNC_STATUS: 0x%02X\n", nxt6000_readreg(fe, VIT_SYNC_STATUS)); - printk("OFDM_COR_STAT: 0x%02X\n", nxt6000_readreg(fe, OFDM_COR_STAT)); - printk("OFDM_SYR_STAT: 0x%02X\n", nxt6000_readreg(fe, OFDM_SYR_STAT)); - printk("OFDM_TPS_RCVD_1: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_1)); - printk("OFDM_TPS_RCVD_2: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_2)); - printk("OFDM_TPS_RCVD_3: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_3)); - printk("OFDM_TPS_RCVD_4: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_4)); - printk("OFDM_TPS_RESERVED_1: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RESERVED_1)); - printk("OFDM_TPS_RESERVED_2: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RESERVED_2)); -*/ - printk("NXT6000 status:"); - - val = nxt6000_readreg(state, RS_COR_STAT); - - printk(" DATA DESCR LOCK: %d,", val & 0x01); - printk(" DATA SYNC LOCK: %d,", (val >> 1) & 0x01); - - val = nxt6000_readreg(state, VIT_SYNC_STATUS); - - printk(" VITERBI LOCK: %d,", (val >> 7) & 0x01); - - switch ((val >> 4) & 0x07) { - - case 0x00: - printk(" VITERBI CODERATE: 1/2,"); - break; - - case 0x01: - printk(" VITERBI CODERATE: 2/3,"); - break; - - case 0x02: - printk(" VITERBI CODERATE: 3/4,"); - break; - - case 0x03: - printk(" VITERBI CODERATE: 5/6,"); - break; - - case 0x04: - printk(" VITERBI CODERATE: 7/8,"); - break; - - default: - printk(" VITERBI CODERATE: Reserved,"); - - } - - val = nxt6000_readreg(state, OFDM_COR_STAT); - - printk(" CHCTrack: %d,", (val >> 7) & 0x01); - printk(" TPSLock: %d,", (val >> 6) & 0x01); - printk(" SYRLock: %d,", (val >> 5) & 0x01); - printk(" AGCLock: %d,", (val >> 4) & 0x01); - - switch (val & 0x0F) { - - case 0x00: - printk(" CoreState: IDLE,"); - break; - - case 0x02: - printk(" CoreState: WAIT_AGC,"); - break; - - case 0x03: - printk(" CoreState: WAIT_SYR,"); - break; - - case 0x04: - printk(" CoreState: WAIT_PPM,"); - break; - - case 0x01: - printk(" CoreState: WAIT_TRL,"); - break; - - case 0x05: - printk(" CoreState: WAIT_TPS,"); - break; - - case 0x06: - printk(" CoreState: MONITOR_TPS,"); - break; - - default: - printk(" CoreState: Reserved,"); - - } - - val = nxt6000_readreg(state, OFDM_SYR_STAT); - - printk(" SYRLock: %d,", (val >> 4) & 0x01); - printk(" SYRMode: %s,", (val >> 2) & 0x01 ? "8K" : "2K"); - - switch ((val >> 4) & 0x03) { - - case 0x00: - printk(" SYRGuard: 1/32,"); - break; - - case 0x01: - printk(" SYRGuard: 1/16,"); - break; - - case 0x02: - printk(" SYRGuard: 1/8,"); - break; - - case 0x03: - printk(" SYRGuard: 1/4,"); - break; - } - - val = nxt6000_readreg(state, OFDM_TPS_RCVD_3); - - switch ((val >> 4) & 0x07) { - - case 0x00: - printk(" TPSLP: 1/2,"); - break; - - case 0x01: - printk(" TPSLP: 2/3,"); - break; - - case 0x02: - printk(" TPSLP: 3/4,"); - break; - - case 0x03: - printk(" TPSLP: 5/6,"); - break; - - case 0x04: - printk(" TPSLP: 7/8,"); - break; - - default: - printk(" TPSLP: Reserved,"); - - } - - switch (val & 0x07) { - - case 0x00: - printk(" TPSHP: 1/2,"); - break; - - case 0x01: - printk(" TPSHP: 2/3,"); - break; - - case 0x02: - printk(" TPSHP: 3/4,"); - break; - - case 0x03: - printk(" TPSHP: 5/6,"); - break; - - case 0x04: - printk(" TPSHP: 7/8,"); - break; - - default: - printk(" TPSHP: Reserved,"); - - } - - val = nxt6000_readreg(state, OFDM_TPS_RCVD_4); - - printk(" TPSMode: %s,", val & 0x01 ? "8K" : "2K"); - - switch ((val >> 4) & 0x03) { - - case 0x00: - printk(" TPSGuard: 1/32,"); - break; - - case 0x01: - printk(" TPSGuard: 1/16,"); - break; - - case 0x02: - printk(" TPSGuard: 1/8,"); - break; - - case 0x03: - printk(" TPSGuard: 1/4,"); - break; - - } - - /* Strange magic required to gain access to RF_AGC_STATUS */ - nxt6000_readreg(state, RF_AGC_VAL_1); - val = nxt6000_readreg(state, RF_AGC_STATUS); - val = nxt6000_readreg(state, RF_AGC_STATUS); - - printk(" RF AGC LOCK: %d,", (val >> 4) & 0x01); - printk("\n"); -} - -static int nxt6000_read_status(struct dvb_frontend* fe, fe_status_t* status) -{ - u8 core_status; - struct nxt6000_state* state = fe->demodulator_priv; - - *status = 0; - - core_status = nxt6000_readreg(state, OFDM_COR_STAT); - - if (core_status & AGCLOCKED) - *status |= FE_HAS_SIGNAL; - - if (nxt6000_readreg(state, OFDM_SYR_STAT) & GI14_SYR_LOCK) - *status |= FE_HAS_CARRIER; - - if (nxt6000_readreg(state, VIT_SYNC_STATUS) & VITINSYNC) - *status |= FE_HAS_VITERBI; - - if (nxt6000_readreg(state, RS_COR_STAT) & RSCORESTATUS) - *status |= FE_HAS_SYNC; - - if ((core_status & TPSLOCKED) && (*status == (FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC))) - *status |= FE_HAS_LOCK; - - if (debug) - nxt6000_dump_status(state); - - return 0; -} - -static int nxt6000_init(struct dvb_frontend* fe) -{ - struct nxt6000_state* state = fe->demodulator_priv; - - nxt6000_reset(state); - nxt6000_setup(fe); - - return 0; -} - -static int nxt6000_set_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - struct nxt6000_state* state = fe->demodulator_priv; - int result; - - if (fe->ops.tuner_ops.set_params) { - fe->ops.tuner_ops.set_params(fe); - if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); - } - - result = nxt6000_set_bandwidth(state, p->bandwidth_hz); - if (result < 0) - return result; - - result = nxt6000_set_guard_interval(state, p->guard_interval); - if (result < 0) - return result; - - result = nxt6000_set_transmission_mode(state, p->transmission_mode); - if (result < 0) - return result; - - result = nxt6000_set_inversion(state, p->inversion); - if (result < 0) - return result; - - msleep(500); - return 0; -} - -static void nxt6000_release(struct dvb_frontend* fe) -{ - struct nxt6000_state* state = fe->demodulator_priv; - kfree(state); -} - -static int nxt6000_read_snr(struct dvb_frontend* fe, u16* snr) -{ - struct nxt6000_state* state = fe->demodulator_priv; - - *snr = nxt6000_readreg( state, OFDM_CHC_SNR) / 8; - - return 0; -} - -static int nxt6000_read_ber(struct dvb_frontend* fe, u32* ber) -{ - struct nxt6000_state* state = fe->demodulator_priv; - - nxt6000_writereg( state, VIT_COR_INTSTAT, 0x18 ); - - *ber = (nxt6000_readreg( state, VIT_BER_1 ) << 8 ) | - nxt6000_readreg( state, VIT_BER_0 ); - - nxt6000_writereg( state, VIT_COR_INTSTAT, 0x18); // Clear BER Done interrupts - - return 0; -} - -static int nxt6000_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength) -{ - struct nxt6000_state* state = fe->demodulator_priv; - - *signal_strength = (short) (511 - - (nxt6000_readreg(state, AGC_GAIN_1) + - ((nxt6000_readreg(state, AGC_GAIN_2) & 0x03) << 8))); - - return 0; -} - -static int nxt6000_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) -{ - tune->min_delay_ms = 500; - return 0; -} - -static int nxt6000_i2c_gate_ctrl(struct dvb_frontend* fe, int enable) -{ - struct nxt6000_state* state = fe->demodulator_priv; - - if (enable) { - return nxt6000_writereg(state, ENABLE_TUNER_IIC, 0x01); - } else { - return nxt6000_writereg(state, ENABLE_TUNER_IIC, 0x00); - } -} - -static struct dvb_frontend_ops nxt6000_ops; - -struct dvb_frontend* nxt6000_attach(const struct nxt6000_config* config, - struct i2c_adapter* i2c) -{ - struct nxt6000_state* state = NULL; - - /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct nxt6000_state), GFP_KERNEL); - if (state == NULL) goto error; - - /* setup the state */ - state->config = config; - state->i2c = i2c; - - /* check if the demod is there */ - if (nxt6000_readreg(state, OFDM_MSC_REV) != NXT6000ASICDEVICE) goto error; - - /* create dvb_frontend */ - memcpy(&state->frontend.ops, &nxt6000_ops, sizeof(struct dvb_frontend_ops)); - state->frontend.demodulator_priv = state; - return &state->frontend; - -error: - kfree(state); - return NULL; -} - -static struct dvb_frontend_ops nxt6000_ops = { - .delsys = { SYS_DVBT }, - .info = { - .name = "NxtWave NXT6000 DVB-T", - .frequency_min = 0, - .frequency_max = 863250000, - .frequency_stepsize = 62500, - /*.frequency_tolerance = *//* FIXME: 12% of SR */ - .symbol_rate_min = 0, /* FIXME */ - .symbol_rate_max = 9360000, /* FIXME */ - .symbol_rate_tolerance = 4000, - .caps = 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_8_9 | FE_CAN_FEC_AUTO | - FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | - FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | - FE_CAN_HIERARCHY_AUTO, - }, - - .release = nxt6000_release, - - .init = nxt6000_init, - .i2c_gate_ctrl = nxt6000_i2c_gate_ctrl, - - .get_tune_settings = nxt6000_fe_get_tune_settings, - - .set_frontend = nxt6000_set_frontend, - - .read_status = nxt6000_read_status, - .read_ber = nxt6000_read_ber, - .read_signal_strength = nxt6000_read_signal_strength, - .read_snr = nxt6000_read_snr, -}; - -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); - -MODULE_DESCRIPTION("NxtWave NXT6000 DVB-T demodulator driver"); -MODULE_AUTHOR("Florian Schirmer"); -MODULE_LICENSE("GPL"); - -EXPORT_SYMBOL(nxt6000_attach); |
