aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/dvb/frontends/ec100.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/dvb/frontends/ec100.c')
-rw-r--r--drivers/media/dvb/frontends/ec100.c335
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 c56fddbf53b7..000000000000
--- 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 = &reg
- }, {
- .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");
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 22:15:40 +0000