diff options
Diffstat (limited to 'drivers/media/dvb/frontends/ec100.c')
| -rw-r--r-- | drivers/media/dvb/frontends/ec100.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/drivers/media/dvb/frontends/ec100.c b/drivers/media/dvb/frontends/ec100.c deleted file mode 100644 index c56fddb..0000000 --- a/drivers/media/dvb/frontends/ec100.c +++ /dev/null @@ -1,335 +0,0 @@ -/* - * E3C EC100 demodulator driver - * - * Copyright (C) 2009 Antti Palosaari <crope@iki.fi> - * - * 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 "dvb_frontend.h" -#include "ec100_priv.h" -#include "ec100.h" - -int ec100_debug; -module_param_named(debug, ec100_debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); - -struct ec100_state { - struct i2c_adapter *i2c; - struct dvb_frontend frontend; - struct ec100_config config; - - u16 ber; -}; - -/* write single register */ -static int ec100_write_reg(struct ec100_state *state, u8 reg, u8 val) -{ - u8 buf[2] = {reg, val}; - struct i2c_msg msg = { - .addr = state->config.demod_address, - .flags = 0, - .len = 2, - .buf = buf}; - - if (i2c_transfer(state->i2c, &msg, 1) != 1) { - warn("I2C write failed reg:%02x", reg); - return -EREMOTEIO; - } - return 0; -} - -/* read single register */ -static int ec100_read_reg(struct ec100_state *state, u8 reg, u8 *val) -{ - struct i2c_msg msg[2] = { - { - .addr = state->config.demod_address, - .flags = 0, - .len = 1, - .buf = ® - }, { - .addr = state->config.demod_address, - .flags = I2C_M_RD, - .len = 1, - .buf = val - } - }; - - if (i2c_transfer(state->i2c, msg, 2) != 2) { - warn("I2C read failed reg:%02x", reg); - return -EREMOTEIO; - } - return 0; -} - -static int ec100_set_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - struct ec100_state *state = fe->demodulator_priv; - int ret; - u8 tmp, tmp2; - - deb_info("%s: freq:%d bw:%d\n", __func__, c->frequency, - c->bandwidth_hz); - - /* program tuner */ - if (fe->ops.tuner_ops.set_params) - fe->ops.tuner_ops.set_params(fe); - - ret = ec100_write_reg(state, 0x04, 0x06); - if (ret) - goto error; - ret = ec100_write_reg(state, 0x67, 0x58); - if (ret) - goto error; - ret = ec100_write_reg(state, 0x05, 0x18); - if (ret) - goto error; - - /* reg/bw | 6 | 7 | 8 - -------+------+------+------ - A 0x1b | 0xa1 | 0xe7 | 0x2c - A 0x1c | 0x55 | 0x63 | 0x72 - -------+------+------+------ - B 0x1b | 0xb7 | 0x00 | 0x49 - B 0x1c | 0x55 | 0x64 | 0x72 */ - - switch (c->bandwidth_hz) { - case 6000000: - tmp = 0xb7; - tmp2 = 0x55; - break; - case 7000000: - tmp = 0x00; - tmp2 = 0x64; - break; - case 8000000: - default: - tmp = 0x49; - tmp2 = 0x72; - } - - ret = ec100_write_reg(state, 0x1b, tmp); - if (ret) - goto error; - ret = ec100_write_reg(state, 0x1c, tmp2); - if (ret) - goto error; - - ret = ec100_write_reg(state, 0x0c, 0xbb); /* if freq */ - if (ret) - goto error; - ret = ec100_write_reg(state, 0x0d, 0x31); /* if freq */ - if (ret) - goto error; - - ret = ec100_write_reg(state, 0x08, 0x24); - if (ret) - goto error; - - ret = ec100_write_reg(state, 0x00, 0x00); /* go */ - if (ret) - goto error; - ret = ec100_write_reg(state, 0x00, 0x20); /* go */ - if (ret) - goto error; - - return ret; -error: - deb_info("%s: failed:%d\n", __func__, ret); - return ret; -} - -static int ec100_get_tune_settings(struct dvb_frontend *fe, - struct dvb_frontend_tune_settings *fesettings) -{ - fesettings->min_delay_ms = 300; - fesettings->step_size = 0; - fesettings->max_drift = 0; - - return 0; -} - -static int ec100_read_status(struct dvb_frontend *fe, fe_status_t *status) -{ - struct ec100_state *state = fe->demodulator_priv; - int ret; - u8 tmp; - *status = 0; - - ret = ec100_read_reg(state, 0x42, &tmp); - if (ret) - goto error; - - if (tmp & 0x80) { - /* bit7 set - have lock */ - *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | - FE_HAS_SYNC | FE_HAS_LOCK; - } else { - ret = ec100_read_reg(state, 0x01, &tmp); - if (ret) - goto error; - - if (tmp & 0x10) { - /* bit4 set - have signal */ - *status |= FE_HAS_SIGNAL; - if (!(tmp & 0x01)) { - /* bit0 clear - have ~valid signal */ - *status |= FE_HAS_CARRIER | FE_HAS_VITERBI; - } - } - } - - return ret; -error: - deb_info("%s: failed:%d\n", __func__, ret); - return ret; -} - -static int ec100_read_ber(struct dvb_frontend *fe, u32 *ber) -{ - struct ec100_state *state = fe->demodulator_priv; - int ret; - u8 tmp, tmp2; - u16 ber2; - - *ber = 0; - - ret = ec100_read_reg(state, 0x65, &tmp); - if (ret) - goto error; - ret = ec100_read_reg(state, 0x66, &tmp2); - if (ret) - goto error; - - ber2 = (tmp2 << 8) | tmp; - - /* if counter overflow or clear */ - if (ber2 < state->ber) - *ber = ber2; - else - *ber = ber2 - state->ber; - - state->ber = ber2; - - return ret; -error: - deb_info("%s: failed:%d\n", __func__, ret); - return ret; -} - -static int ec100_read_signal_strength(struct dvb_frontend *fe, u16 *strength) -{ - struct ec100_state *state = fe->demodulator_priv; - int ret; - u8 tmp; - - ret = ec100_read_reg(state, 0x24, &tmp); - if (ret) { - *strength = 0; - goto error; - } - - *strength = ((tmp << 8) | tmp); - - return ret; -error: - deb_info("%s: failed:%d\n", __func__, ret); - return ret; -} - -static int ec100_read_snr(struct dvb_frontend *fe, u16 *snr) -{ - *snr = 0; - return 0; -} - -static int ec100_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) -{ - *ucblocks = 0; - return 0; -} - -static void ec100_release(struct dvb_frontend *fe) -{ - struct ec100_state *state = fe->demodulator_priv; - kfree(state); -} - -static struct dvb_frontend_ops ec100_ops; - -struct dvb_frontend *ec100_attach(const struct ec100_config *config, - struct i2c_adapter *i2c) -{ - int ret; - struct ec100_state *state = NULL; - u8 tmp; - - /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct ec100_state), GFP_KERNEL); - if (state == NULL) - goto error; - - /* setup the state */ - state->i2c = i2c; - memcpy(&state->config, config, sizeof(struct ec100_config)); - - /* check if the demod is there */ - ret = ec100_read_reg(state, 0x33, &tmp); - if (ret || tmp != 0x0b) - goto error; - - /* create dvb_frontend */ - memcpy(&state->frontend.ops, &ec100_ops, - sizeof(struct dvb_frontend_ops)); - state->frontend.demodulator_priv = state; - - return &state->frontend; -error: - kfree(state); - return NULL; -} -EXPORT_SYMBOL(ec100_attach); - -static struct dvb_frontend_ops ec100_ops = { - .delsys = { SYS_DVBT }, - .info = { - .name = "E3C EC100 DVB-T", - .caps = - FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | - FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | - FE_CAN_QPSK | 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 | - FE_CAN_MUTE_TS - }, - - .release = ec100_release, - .set_frontend = ec100_set_frontend, - .get_tune_settings = ec100_get_tune_settings, - .read_status = ec100_read_status, - .read_ber = ec100_read_ber, - .read_signal_strength = ec100_read_signal_strength, - .read_snr = ec100_read_snr, - .read_ucblocks = ec100_read_ucblocks, -}; - -MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); -MODULE_DESCRIPTION("E3C EC100 DVB-T demodulator driver"); -MODULE_LICENSE("GPL"); |
