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Diffstat (limited to 'drivers/media/dvb-frontends/hd29l2.c')
-rw-r--r--drivers/media/dvb-frontends/hd29l2.c870
1 files changed, 0 insertions, 870 deletions
diff --git a/drivers/media/dvb-frontends/hd29l2.c b/drivers/media/dvb-frontends/hd29l2.c
deleted file mode 100644
index 8b53633cf325..000000000000
--- a/drivers/media/dvb-frontends/hd29l2.c
+++ /dev/null
@@ -1,870 +0,0 @@
-/*
- * HDIC HD29L2 DMB-TH demodulator driver
- *
- * Copyright (C) 2011 Metropolia University of Applied Sciences, Electria R&D
- *
- * Author: 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 "hd29l2_priv.h"
-
-#define HD29L2_MAX_LEN (3)
-
-/* write multiple registers */
-static int hd29l2_wr_regs(struct hd29l2_priv *priv, u8 reg, u8 *val, int len)
-{
- int ret;
- u8 buf[2 + HD29L2_MAX_LEN];
- struct i2c_msg msg[1] = {
- {
- .addr = priv->cfg.i2c_addr,
- .flags = 0,
- .len = 2 + len,
- .buf = buf,
- }
- };
-
- if (len > HD29L2_MAX_LEN)
- return -EINVAL;
- buf[0] = 0x00;
- buf[1] = reg;
- memcpy(&buf[2], val, len);
-
- ret = i2c_transfer(priv->i2c, msg, 1);
- if (ret == 1) {
- ret = 0;
- } else {
- dev_warn(&priv->i2c->dev,
- "%s: i2c wr failed=%d reg=%02x len=%d\n",
- KBUILD_MODNAME, ret, reg, len);
- ret = -EREMOTEIO;
- }
-
- return ret;
-}
-
-/* read multiple registers */
-static int hd29l2_rd_regs(struct hd29l2_priv *priv, u8 reg, u8 *val, int len)
-{
- int ret;
- u8 buf[2] = { 0x00, reg };
- struct i2c_msg msg[2] = {
- {
- .addr = priv->cfg.i2c_addr,
- .flags = 0,
- .len = 2,
- .buf = buf,
- }, {
- .addr = priv->cfg.i2c_addr,
- .flags = I2C_M_RD,
- .len = len,
- .buf = val,
- }
- };
-
- ret = i2c_transfer(priv->i2c, msg, 2);
- if (ret == 2) {
- ret = 0;
- } else {
- dev_warn(&priv->i2c->dev,
- "%s: i2c rd failed=%d reg=%02x len=%d\n",
- KBUILD_MODNAME, ret, reg, len);
- ret = -EREMOTEIO;
- }
-
- return ret;
-}
-
-/* write single register */
-static int hd29l2_wr_reg(struct hd29l2_priv *priv, u8 reg, u8 val)
-{
- return hd29l2_wr_regs(priv, reg, &val, 1);
-}
-
-/* read single register */
-static int hd29l2_rd_reg(struct hd29l2_priv *priv, u8 reg, u8 *val)
-{
- return hd29l2_rd_regs(priv, reg, val, 1);
-}
-
-/* write single register with mask */
-static int hd29l2_wr_reg_mask(struct hd29l2_priv *priv, u8 reg, u8 val, u8 mask)
-{
- int ret;
- u8 tmp;
-
- /* no need for read if whole reg is written */
- if (mask != 0xff) {
- ret = hd29l2_rd_regs(priv, reg, &tmp, 1);
- if (ret)
- return ret;
-
- val &= mask;
- tmp &= ~mask;
- val |= tmp;
- }
-
- return hd29l2_wr_regs(priv, reg, &val, 1);
-}
-
-/* read single register with mask */
-static int hd29l2_rd_reg_mask(struct hd29l2_priv *priv, u8 reg, u8 *val, u8 mask)
-{
- int ret, i;
- u8 tmp;
-
- ret = hd29l2_rd_regs(priv, reg, &tmp, 1);
- if (ret)
- return ret;
-
- tmp &= mask;
-
- /* find position of the first bit */
- for (i = 0; i < 8; i++) {
- if ((mask >> i) & 0x01)
- break;
- }
- *val = tmp >> i;
-
- return 0;
-}
-
-static int hd29l2_soft_reset(struct hd29l2_priv *priv)
-{
- int ret;
- u8 tmp;
-
- ret = hd29l2_rd_reg(priv, 0x26, &tmp);
- if (ret)
- goto err;
-
- ret = hd29l2_wr_reg(priv, 0x26, 0x0d);
- if (ret)
- goto err;
-
- usleep_range(10000, 20000);
-
- ret = hd29l2_wr_reg(priv, 0x26, tmp);
- if (ret)
- goto err;
-
- return 0;
-err:
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int hd29l2_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
-{
- int ret, i;
- struct hd29l2_priv *priv = fe->demodulator_priv;
- u8 tmp;
-
- dev_dbg(&priv->i2c->dev, "%s: enable=%d\n", __func__, enable);
-
- /* set tuner address for demod */
- if (!priv->tuner_i2c_addr_programmed && enable) {
- /* no need to set tuner address every time, once is enough */
- ret = hd29l2_wr_reg(priv, 0x9d, priv->cfg.tuner_i2c_addr << 1);
- if (ret)
- goto err;
-
- priv->tuner_i2c_addr_programmed = true;
- }
-
- /* open / close gate */
- ret = hd29l2_wr_reg(priv, 0x9f, enable);
- if (ret)
- goto err;
-
- /* wait demod ready */
- for (i = 10; i; i--) {
- ret = hd29l2_rd_reg(priv, 0x9e, &tmp);
- if (ret)
- goto err;
-
- if (tmp == enable)
- break;
-
- usleep_range(5000, 10000);
- }
-
- dev_dbg(&priv->i2c->dev, "%s: loop=%d\n", __func__, i);
-
- return ret;
-err:
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int hd29l2_read_status(struct dvb_frontend *fe, enum fe_status *status)
-{
- int ret;
- struct hd29l2_priv *priv = fe->demodulator_priv;
- u8 buf[2];
-
- *status = 0;
-
- ret = hd29l2_rd_reg(priv, 0x05, &buf[0]);
- if (ret)
- goto err;
-
- if (buf[0] & 0x01) {
- /* full lock */
- *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
- FE_HAS_SYNC | FE_HAS_LOCK;
- } else {
- ret = hd29l2_rd_reg(priv, 0x0d, &buf[1]);
- if (ret)
- goto err;
-
- if ((buf[1] & 0xfe) == 0x78)
- /* partial lock */
- *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
- FE_HAS_VITERBI | FE_HAS_SYNC;
- }
-
- priv->fe_status = *status;
-
- return 0;
-err:
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int hd29l2_read_snr(struct dvb_frontend *fe, u16 *snr)
-{
- int ret;
- struct hd29l2_priv *priv = fe->demodulator_priv;
- u8 buf[2];
- u16 tmp;
-
- if (!(priv->fe_status & FE_HAS_LOCK)) {
- *snr = 0;
- ret = 0;
- goto err;
- }
-
- ret = hd29l2_rd_regs(priv, 0x0b, buf, 2);
- if (ret)
- goto err;
-
- tmp = (buf[0] << 8) | buf[1];
-
- /* report SNR in dB * 10 */
- #define LOG10_20736_24 72422627 /* log10(20736) << 24 */
- if (tmp)
- *snr = (LOG10_20736_24 - intlog10(tmp)) / ((1 << 24) / 100);
- else
- *snr = 0;
-
- return 0;
-err:
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int hd29l2_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
-{
- int ret;
- struct hd29l2_priv *priv = fe->demodulator_priv;
- u8 buf[2];
- u16 tmp;
-
- *strength = 0;
-
- ret = hd29l2_rd_regs(priv, 0xd5, buf, 2);
- if (ret)
- goto err;
-
- tmp = buf[0] << 8 | buf[1];
- tmp = ~tmp & 0x0fff;
-
- /* scale value to 0x0000-0xffff from 0x0000-0x0fff */
- *strength = tmp * 0xffff / 0x0fff;
-
- return 0;
-err:
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int hd29l2_read_ber(struct dvb_frontend *fe, u32 *ber)
-{
- int ret;
- struct hd29l2_priv *priv = fe->demodulator_priv;
- u8 buf[2];
-
- if (!(priv->fe_status & FE_HAS_SYNC)) {
- *ber = 0;
- ret = 0;
- goto err;
- }
-
- ret = hd29l2_rd_regs(priv, 0xd9, buf, 2);
- if (ret) {
- *ber = 0;
- goto err;
- }
-
- /* LDPC BER */
- *ber = ((buf[0] & 0x0f) << 8) | buf[1];
-
- return 0;
-err:
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int hd29l2_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
-{
- /* no way to read? */
- *ucblocks = 0;
- return 0;
-}
-
-static enum dvbfe_search hd29l2_search(struct dvb_frontend *fe)
-{
- int ret, i;
- struct hd29l2_priv *priv = fe->demodulator_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- u8 tmp, buf[3];
- u8 modulation, carrier, guard_interval, interleave, code_rate;
- u64 num64;
- u32 if_freq, if_ctl;
- bool auto_mode;
-
- dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
- "bandwidth_hz=%d modulation=%d inversion=%d " \
- "fec_inner=%d guard_interval=%d\n", __func__,
- c->delivery_system, c->frequency, c->bandwidth_hz,
- c->modulation, c->inversion, c->fec_inner,
- c->guard_interval);
-
- /* as for now we detect always params automatically */
- auto_mode = true;
-
- /* program tuner */
- if (fe->ops.tuner_ops.set_params)
- fe->ops.tuner_ops.set_params(fe);
-
- /* get and program IF */
- if (fe->ops.tuner_ops.get_if_frequency)
- fe->ops.tuner_ops.get_if_frequency(fe, &if_freq);
- else
- if_freq = 0;
-
- if (if_freq) {
- /* normal IF */
-
- /* calc IF control value */
- num64 = if_freq;
- num64 *= 0x800000;
- num64 = div_u64(num64, HD29L2_XTAL);
- num64 -= 0x800000;
- if_ctl = num64;
-
- tmp = 0xfc; /* tuner type normal */
- } else {
- /* zero IF */
- if_ctl = 0;
- tmp = 0xfe; /* tuner type Zero-IF */
- }
-
- buf[0] = ((if_ctl >> 0) & 0xff);
- buf[1] = ((if_ctl >> 8) & 0xff);
- buf[2] = ((if_ctl >> 16) & 0xff);
-
- /* program IF control */
- ret = hd29l2_wr_regs(priv, 0x14, buf, 3);
- if (ret)
- goto err;
-
- /* program tuner type */
- ret = hd29l2_wr_reg(priv, 0xab, tmp);
- if (ret)
- goto err;
-
- dev_dbg(&priv->i2c->dev, "%s: if_freq=%d if_ctl=%x\n",
- __func__, if_freq, if_ctl);
-
- if (auto_mode) {
- /*
- * use auto mode
- */
-
- /* disable quick mode */
- ret = hd29l2_wr_reg_mask(priv, 0xac, 0 << 7, 0x80);
- if (ret)
- goto err;
-
- ret = hd29l2_wr_reg_mask(priv, 0x82, 1 << 1, 0x02);
- if (ret)
- goto err;
-
- /* enable auto mode */
- ret = hd29l2_wr_reg_mask(priv, 0x7d, 1 << 6, 0x40);
- if (ret)
- goto err;
-
- ret = hd29l2_wr_reg_mask(priv, 0x81, 1 << 3, 0x08);
- if (ret)
- goto err;
-
- /* soft reset */
- ret = hd29l2_soft_reset(priv);
- if (ret)
- goto err;
-
- /* detect modulation */
- for (i = 30; i; i--) {
- msleep(100);
-
- ret = hd29l2_rd_reg(priv, 0x0d, &tmp);
- if (ret)
- goto err;
-
- if ((((tmp & 0xf0) >= 0x10) &&
- ((tmp & 0x0f) == 0x08)) || (tmp >= 0x2c))
- break;
- }
-
- dev_dbg(&priv->i2c->dev, "%s: loop=%d\n", __func__, i);
-
- if (i == 0)
- /* detection failed */
- return DVBFE_ALGO_SEARCH_FAILED;
-
- /* read modulation */
- ret = hd29l2_rd_reg_mask(priv, 0x7d, &modulation, 0x07);
- if (ret)
- goto err;
- } else {
- /*
- * use manual mode
- */
-
- modulation = HD29L2_QAM64;
- carrier = HD29L2_CARRIER_MULTI;
- guard_interval = HD29L2_PN945;
- interleave = HD29L2_INTERLEAVER_420;
- code_rate = HD29L2_CODE_RATE_08;
-
- tmp = (code_rate << 3) | modulation;
- ret = hd29l2_wr_reg_mask(priv, 0x7d, tmp, 0x5f);
- if (ret)
- goto err;
-
- tmp = (carrier << 2) | guard_interval;
- ret = hd29l2_wr_reg_mask(priv, 0x81, tmp, 0x0f);
- if (ret)
- goto err;
-
- tmp = interleave;
- ret = hd29l2_wr_reg_mask(priv, 0x82, tmp, 0x03);
- if (ret)
- goto err;
- }
-
- /* ensure modulation validy */
- /* 0=QAM4_NR, 1=QAM4, 2=QAM16, 3=QAM32, 4=QAM64 */
- if (modulation > (ARRAY_SIZE(reg_mod_vals_tab[0].val) - 1)) {
- dev_dbg(&priv->i2c->dev, "%s: modulation=%d not valid\n",
- __func__, modulation);
- goto err;
- }
-
- /* program registers according to modulation */
- for (i = 0; i < ARRAY_SIZE(reg_mod_vals_tab); i++) {
- ret = hd29l2_wr_reg(priv, reg_mod_vals_tab[i].reg,
- reg_mod_vals_tab[i].val[modulation]);
- if (ret)
- goto err;
- }
-
- /* read guard interval */
- ret = hd29l2_rd_reg_mask(priv, 0x81, &guard_interval, 0x03);
- if (ret)
- goto err;
-
- /* read carrier mode */
- ret = hd29l2_rd_reg_mask(priv, 0x81, &carrier, 0x04);
- if (ret)
- goto err;
-
- dev_dbg(&priv->i2c->dev,
- "%s: modulation=%d guard_interval=%d carrier=%d\n",
- __func__, modulation, guard_interval, carrier);
-
- if ((carrier == HD29L2_CARRIER_MULTI) && (modulation == HD29L2_QAM64) &&
- (guard_interval == HD29L2_PN945)) {
- dev_dbg(&priv->i2c->dev, "%s: C=3780 && QAM64 && PN945\n",
- __func__);
-
- ret = hd29l2_wr_reg(priv, 0x42, 0x33);
- if (ret)
- goto err;
-
- ret = hd29l2_wr_reg(priv, 0xdd, 0x01);
- if (ret)
- goto err;
- }
-
- usleep_range(10000, 20000);
-
- /* soft reset */
- ret = hd29l2_soft_reset(priv);
- if (ret)
- goto err;
-
- /* wait demod lock */
- for (i = 30; i; i--) {
- msleep(100);
-
- /* read lock bit */
- ret = hd29l2_rd_reg_mask(priv, 0x05, &tmp, 0x01);
- if (ret)
- goto err;
-
- if (tmp)
- break;
- }
-
- dev_dbg(&priv->i2c->dev, "%s: loop=%d\n", __func__, i);
-
- if (i == 0)
- return DVBFE_ALGO_SEARCH_AGAIN;
-
- return DVBFE_ALGO_SEARCH_SUCCESS;
-err:
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
- return DVBFE_ALGO_SEARCH_ERROR;
-}
-
-static int hd29l2_get_frontend_algo(struct dvb_frontend *fe)
-{
- return DVBFE_ALGO_CUSTOM;
-}
-
-static int hd29l2_get_frontend(struct dvb_frontend *fe,
- struct dtv_frontend_properties *c)
-{
- int ret;
- struct hd29l2_priv *priv = fe->demodulator_priv;
- u8 buf[3];
- u32 if_ctl;
- char *str_constellation, *str_code_rate, *str_constellation_code_rate,
- *str_guard_interval, *str_carrier, *str_guard_interval_carrier,
- *str_interleave, *str_interleave_;
-
- ret = hd29l2_rd_reg(priv, 0x7d, &buf[0]);
- if (ret)
- goto err;
-
- ret = hd29l2_rd_regs(priv, 0x81, &buf[1], 2);
- if (ret)
- goto err;
-
- /* constellation, 0x7d[2:0] */
- switch ((buf[0] >> 0) & 0x07) {
- case 0: /* QAM4NR */
- str_constellation = "QAM4NR";
- c->modulation = QAM_AUTO; /* FIXME */
- break;
- case 1: /* QAM4 */
- str_constellation = "QAM4";
- c->modulation = QPSK; /* FIXME */
- break;
- case 2:
- str_constellation = "QAM16";
- c->modulation = QAM_16;
- break;
- case 3:
- str_constellation = "QAM32";
- c->modulation = QAM_32;
- break;
- case 4:
- str_constellation = "QAM64";
- c->modulation = QAM_64;
- break;
- default:
- str_constellation = "?";
- }
-
- /* LDPC code rate, 0x7d[4:3] */
- switch ((buf[0] >> 3) & 0x03) {
- case 0: /* 0.4 */
- str_code_rate = "0.4";
- c->fec_inner = FEC_AUTO; /* FIXME */
- break;
- case 1: /* 0.6 */
- str_code_rate = "0.6";
- c->fec_inner = FEC_3_5;
- break;
- case 2: /* 0.8 */
- str_code_rate = "0.8";
- c->fec_inner = FEC_4_5;
- break;
- default:
- str_code_rate = "?";
- }
-
- /* constellation & code rate set, 0x7d[6] */
- switch ((buf[0] >> 6) & 0x01) {
- case 0:
- str_constellation_code_rate = "manual";
- break;
- case 1:
- str_constellation_code_rate = "auto";
- break;
- default:
- str_constellation_code_rate = "?";
- }
-
- /* frame header, 0x81[1:0] */
- switch ((buf[1] >> 0) & 0x03) {
- case 0: /* PN945 */
- str_guard_interval = "PN945";
- c->guard_interval = GUARD_INTERVAL_AUTO; /* FIXME */
- break;
- case 1: /* PN595 */
- str_guard_interval = "PN595";
- c->guard_interval = GUARD_INTERVAL_AUTO; /* FIXME */
- break;
- case 2: /* PN420 */
- str_guard_interval = "PN420";
- c->guard_interval = GUARD_INTERVAL_AUTO; /* FIXME */
- break;
- default:
- str_guard_interval = "?";
- }
-
- /* carrier, 0x81[2] */
- switch ((buf[1] >> 2) & 0x01) {
- case 0:
- str_carrier = "C=1";
- break;
- case 1:
- str_carrier = "C=3780";
- break;
- default:
- str_carrier = "?";
- }
-
- /* frame header & carrier set, 0x81[3] */
- switch ((buf[1] >> 3) & 0x01) {
- case 0:
- str_guard_interval_carrier = "manual";
- break;
- case 1:
- str_guard_interval_carrier = "auto";
- break;
- default:
- str_guard_interval_carrier = "?";
- }
-
- /* interleave, 0x82[0] */
- switch ((buf[2] >> 0) & 0x01) {
- case 0:
- str_interleave = "M=720";
- break;
- case 1:
- str_interleave = "M=240";
- break;
- default:
- str_interleave = "?";
- }
-
- /* interleave set, 0x82[1] */
- switch ((buf[2] >> 1) & 0x01) {
- case 0:
- str_interleave_ = "manual";
- break;
- case 1:
- str_interleave_ = "auto";
- break;
- default:
- str_interleave_ = "?";
- }
-
- /*
- * We can read out current detected NCO and use that value next
- * time instead of calculating new value from targed IF.
- * I think it will not effect receiver sensitivity but gaining lock
- * after tune could be easier...
- */
- ret = hd29l2_rd_regs(priv, 0xb1, &buf[0], 3);
- if (ret)
- goto err;
-
- if_ctl = (buf[0] << 16) | ((buf[1] - 7) << 8) | buf[2];
-
- dev_dbg(&priv->i2c->dev, "%s: %s %s %s | %s %s %s | %s %s | NCO=%06x\n",
- __func__, str_constellation, str_code_rate,
- str_constellation_code_rate, str_guard_interval,
- str_carrier, str_guard_interval_carrier, str_interleave,
- str_interleave_, if_ctl);
- return 0;
-err:
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static int hd29l2_init(struct dvb_frontend *fe)
-{
- int ret, i;
- struct hd29l2_priv *priv = fe->demodulator_priv;
- u8 tmp;
- static const struct reg_val tab[] = {
- { 0x3a, 0x06 },
- { 0x3b, 0x03 },
- { 0x3c, 0x04 },
- { 0xaf, 0x06 },
- { 0xb0, 0x1b },
- { 0x80, 0x64 },
- { 0x10, 0x38 },
- };
-
- dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
-
- /* reset demod */
- /* it is recommended to HW reset chip using RST_N pin */
- if (fe->callback) {
- ret = fe->callback(fe, DVB_FRONTEND_COMPONENT_DEMOD, 0, 0);
- if (ret)
- goto err;
-
- /* reprogramming needed because HW reset clears registers */
- priv->tuner_i2c_addr_programmed = false;
- }
-
- /* init */
- for (i = 0; i < ARRAY_SIZE(tab); i++) {
- ret = hd29l2_wr_reg(priv, tab[i].reg, tab[i].val);
- if (ret)
- goto err;
- }
-
- /* TS params */
- ret = hd29l2_rd_reg(priv, 0x36, &tmp);
- if (ret)
- goto err;
-
- tmp &= 0x1b;
- tmp |= priv->cfg.ts_mode;
- ret = hd29l2_wr_reg(priv, 0x36, tmp);
- if (ret)
- goto err;
-
- ret = hd29l2_rd_reg(priv, 0x31, &tmp);
- tmp &= 0xef;
-
- if (!(priv->cfg.ts_mode >> 7))
- /* set b4 for serial TS */
- tmp |= 0x10;
-
- ret = hd29l2_wr_reg(priv, 0x31, tmp);
- if (ret)
- goto err;
-
- return ret;
-err:
- dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
- return ret;
-}
-
-static void hd29l2_release(struct dvb_frontend *fe)
-{
- struct hd29l2_priv *priv = fe->demodulator_priv;
- kfree(priv);
-}
-
-static const struct dvb_frontend_ops hd29l2_ops;
-
-struct dvb_frontend *hd29l2_attach(const struct hd29l2_config *config,
- struct i2c_adapter *i2c)
-{
- int ret;
- struct hd29l2_priv *priv = NULL;
- u8 tmp;
-
- /* allocate memory for the internal state */
- priv = kzalloc(sizeof(struct hd29l2_priv), GFP_KERNEL);
- if (priv == NULL)
- goto err;
-
- /* setup the state */
- priv->i2c = i2c;
- memcpy(&priv->cfg, config, sizeof(struct hd29l2_config));
-
-
- /* check if the demod is there */
- ret = hd29l2_rd_reg(priv, 0x00, &tmp);
- if (ret)
- goto err;
-
- /* create dvb_frontend */
- memcpy(&priv->fe.ops, &hd29l2_ops, sizeof(struct dvb_frontend_ops));
- priv->fe.demodulator_priv = priv;
-
- return &priv->fe;
-err:
- kfree(priv);
- return NULL;
-}
-EXPORT_SYMBOL(hd29l2_attach);
-
-static const struct dvb_frontend_ops hd29l2_ops = {
- .delsys = { SYS_DVBT },
- .info = {
- .name = "HDIC HD29L2 DMB-TH",
- .frequency_min = 474000000,
- .frequency_max = 858000000,
- .frequency_stepsize = 10000,
- .caps = FE_CAN_FEC_AUTO |
- FE_CAN_QPSK |
- FE_CAN_QAM_16 |
- FE_CAN_QAM_32 |
- FE_CAN_QAM_64 |
- FE_CAN_QAM_AUTO |
- FE_CAN_TRANSMISSION_MODE_AUTO |
- FE_CAN_BANDWIDTH_AUTO |
- FE_CAN_GUARD_INTERVAL_AUTO |
- FE_CAN_HIERARCHY_AUTO |
- FE_CAN_RECOVER
- },
-
- .release = hd29l2_release,
-
- .init = hd29l2_init,
-
- .get_frontend_algo = hd29l2_get_frontend_algo,
- .search = hd29l2_search,
- .get_frontend = hd29l2_get_frontend,
-
- .read_status = hd29l2_read_status,
- .read_snr = hd29l2_read_snr,
- .read_signal_strength = hd29l2_read_signal_strength,
- .read_ber = hd29l2_read_ber,
- .read_ucblocks = hd29l2_read_ucblocks,
-
- .i2c_gate_ctrl = hd29l2_i2c_gate_ctrl,
-};
-
-MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
-MODULE_DESCRIPTION("HDIC HD29L2 DMB-TH demodulator driver");
-MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.