[media] tda10071: NXP TDA10071 DVB-S/S2 driver

NXP TDA10071 DVB-S/S2 demodulator & Conexant CX24118A tuner combo driver

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 1266 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/tda10071.c b/drivers/media/dvb/frontends/tda10071.c
new file mode 100644
index 000000000000..26b52cc83c61
--- /dev/null
+++ b/drivers/media/dvb/frontends/tda10071.c
@@ -0,0 +1,1266 @@
+/*
+ * NXP TDA10071 + Conexant CX24118A DVB-S/S2 demodulator + tuner driver
+ *
+ * Copyright (C) 2011 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.,
+ *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "tda10071_priv.h"
+
+int tda10071_debug;
+module_param_named(debug, tda10071_debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+static struct dvb_frontend_ops tda10071_ops;
+
+/* write multiple registers */
+static int tda10071_wr_regs(struct tda10071_priv *priv, u8 reg, u8 *val,
+        int len)
+{
+        int ret;
+        u8 buf[len+1];
+        struct i2c_msg msg[1] = {
+                {
+                        .addr = priv->cfg.i2c_address,
+                        .flags = 0,
+                        .len = sizeof(buf),
+                        .buf = buf,
+                }
+        };
+
+        buf[0] = reg;
+        memcpy(&buf[1], val, len);
+
+        ret = i2c_transfer(priv->i2c, msg, 1);
+        if (ret == 1) {
+                ret = 0;
+        } else {
+                warn("i2c wr failed=%d reg=%02x len=%d", ret, reg, len);
+                ret = -EREMOTEIO;
+        }
+        return ret;
+}
+
+/* read multiple registers */
+static int tda10071_rd_regs(struct tda10071_priv *priv, u8 reg, u8 *val,
+        int len)
+{
+        int ret;
+        u8 buf[len];
+        struct i2c_msg msg[2] = {
+                {
+                        .addr = priv->cfg.i2c_address,
+                        .flags = 0,
+                        .len = 1,
+                        .buf = &reg,
+                }, {
+                        .addr = priv->cfg.i2c_address,
+                        .flags = I2C_M_RD,
+                        .len = sizeof(buf),
+                        .buf = buf,
+                }
+        };
+
+        ret = i2c_transfer(priv->i2c, msg, 2);
+        if (ret == 2) {
+                memcpy(val, buf, len);
+                ret = 0;
+        } else {
+                warn("i2c rd failed=%d reg=%02x len=%d", ret, reg, len);
+                ret = -EREMOTEIO;
+        }
+        return ret;
+}
+
+/* write single register */
+static int tda10071_wr_reg(struct tda10071_priv *priv, u8 reg, u8 val)
+{
+        return tda10071_wr_regs(priv, reg, &val, 1);
+}
+
+/* read single register */
+static int tda10071_rd_reg(struct tda10071_priv *priv, u8 reg, u8 *val)
+{
+        return tda10071_rd_regs(priv, reg, val, 1);
+}
+
+/* write single register with mask */
+int tda10071_wr_reg_mask(struct tda10071_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 = tda10071_rd_regs(priv, reg, &tmp, 1);
+                if (ret)
+                        return ret;
+
+                val &= mask;
+                tmp &= ~mask;
+                val |= tmp;
+        }
+
+        return tda10071_wr_regs(priv, reg, &val, 1);
+}
+
+/* read single register with mask */
+int tda10071_rd_reg_mask(struct tda10071_priv *priv, u8 reg, u8 *val, u8 mask)
+{
+        int ret, i;
+        u8 tmp;
+
+        ret = tda10071_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;
+}
+
+/* execute firmware command */
+static int tda10071_cmd_execute(struct tda10071_priv *priv,
+        struct tda10071_cmd *cmd)
+{
+        int ret, i;
+        u8 tmp;
+
+        if (!priv->warm) {
+                ret = -EFAULT;
+                goto error;
+        }
+
+        /* write cmd and args for firmware */
+        ret = tda10071_wr_regs(priv, 0x00, cmd->args, cmd->len);
+        if (ret)
+                goto error;
+
+        /* start cmd execution */
+        ret = tda10071_wr_reg(priv, 0x1f, 1);
+        if (ret)
+                goto error;
+
+        /* wait cmd execution terminate */
+        for (i = 1000, tmp = 1; i && tmp; i--) {
+                ret = tda10071_rd_reg(priv, 0x1f, &tmp);
+                if (ret)
+                        goto error;
+
+                msleep(1);
+        }
+
+        dbg("%s: loop=%d", __func__, i);
+
+        if (i == 0) {
+                ret = -ETIMEDOUT;
+                goto error;
+        }
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_set_tone(struct dvb_frontend *fe,
+        fe_sec_tone_mode_t fe_sec_tone_mode)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct tda10071_cmd cmd;
+        int ret;
+        u8 tone;
+
+        if (!priv->warm) {
+                ret = -EFAULT;
+                goto error;
+        }
+
+        dbg("%s: tone_mode=%d", __func__, fe_sec_tone_mode);
+
+        switch (fe_sec_tone_mode) {
+        case SEC_TONE_ON:
+                tone = 1;
+                break;
+        case SEC_TONE_OFF:
+                tone = 0;
+                break;
+        default:
+                dbg("%s: invalid fe_sec_tone_mode", __func__);
+                ret = -EINVAL;
+                goto error;
+        }
+
+        cmd.args[0x00] = CMD_LNB_PCB_CONFIG;
+        cmd.args[0x01] = 0;
+        cmd.args[0x02] = 0x00;
+        cmd.args[0x03] = 0x00;
+        cmd.args[0x04] = tone;
+        cmd.len = 0x05;
+        ret = tda10071_cmd_execute(priv, &cmd);
+        if (ret)
+                goto error;
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_set_voltage(struct dvb_frontend *fe,
+        fe_sec_voltage_t fe_sec_voltage)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct tda10071_cmd cmd;
+        int ret;
+        u8 voltage;
+
+        if (!priv->warm) {
+                ret = -EFAULT;
+                goto error;
+        }
+
+        dbg("%s: voltage=%d", __func__, fe_sec_voltage);
+
+        switch (fe_sec_voltage) {
+        case SEC_VOLTAGE_13:
+                voltage = 0;
+                break;
+        case SEC_VOLTAGE_18:
+                voltage = 1;
+                break;
+        case SEC_VOLTAGE_OFF:
+                voltage = 0;
+                break;
+        default:
+                dbg("%s: invalid fe_sec_voltage", __func__);
+                ret = -EINVAL;
+                goto error;
+        };
+
+        cmd.args[0x00] = CMD_LNB_SET_DC_LEVEL;
+        cmd.args[0x01] = 0;
+        cmd.args[0x02] = voltage;
+        cmd.len = 0x03;
+        ret = tda10071_cmd_execute(priv, &cmd);
+        if (ret)
+                goto error;
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_diseqc_send_master_cmd(struct dvb_frontend *fe,
+        struct dvb_diseqc_master_cmd *diseqc_cmd)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct tda10071_cmd cmd;
+        int ret, i;
+        u8 tmp;
+
+        if (!priv->warm) {
+                ret = -EFAULT;
+                goto error;
+        }
+
+        dbg("%s: msg_len=%d", __func__, diseqc_cmd->msg_len);
+
+        if (diseqc_cmd->msg_len < 3 || diseqc_cmd->msg_len > 16) {
+                ret = -EINVAL;
+                goto error;
+        }
+
+        /* wait LNB TX */
+        for (i = 500, tmp = 0; i && !tmp; i--) {
+                ret = tda10071_rd_reg_mask(priv, 0x47, &tmp, 0x01);
+                if (ret)
+                        goto error;
+
+                msleep(10);
+        }
+
+        dbg("%s: loop=%d", __func__, i);
+
+        if (i == 0) {
+                ret = -ETIMEDOUT;
+                goto error;
+        }
+
+        ret = tda10071_wr_reg_mask(priv, 0x47, 0x00, 0x01);
+        if (ret)
+                goto error;
+
+        cmd.args[0x00] = CMD_LNB_SEND_DISEQC;
+        cmd.args[0x01] = 0;
+        cmd.args[0x02] = 0;
+        cmd.args[0x03] = 0;
+        cmd.args[0x04] = 2;
+        cmd.args[0x05] = 0;
+        cmd.args[0x06] = diseqc_cmd->msg_len;
+        memcpy(&cmd.args[0x07], diseqc_cmd->msg, diseqc_cmd->msg_len);
+        cmd.len = 0x07 + diseqc_cmd->msg_len;
+        ret = tda10071_cmd_execute(priv, &cmd);
+        if (ret)
+                goto error;
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_diseqc_recv_slave_reply(struct dvb_frontend *fe,
+        struct dvb_diseqc_slave_reply *reply)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct tda10071_cmd cmd;
+        int ret, i;
+        u8 tmp;
+
+        if (!priv->warm) {
+                ret = -EFAULT;
+                goto error;
+        }
+
+        dbg("%s:", __func__);
+
+        /* wait LNB RX */
+        for (i = 500, tmp = 0; i && !tmp; i--) {
+                ret = tda10071_rd_reg_mask(priv, 0x47, &tmp, 0x02);
+                if (ret)
+                        goto error;
+
+                msleep(10);
+        }
+
+        dbg("%s: loop=%d", __func__, i);
+
+        if (i == 0) {
+                ret = -ETIMEDOUT;
+                goto error;
+        }
+
+        /* reply len */
+        ret = tda10071_rd_reg(priv, 0x46, &tmp);
+        if (ret)
+                goto error;
+
+        reply->msg_len = tmp & 0x1f; /* [4:0] */;
+        if (reply->msg_len > sizeof(reply->msg))
+                reply->msg_len = sizeof(reply->msg); /* truncate API max */
+
+        /* read reply */
+        cmd.args[0x00] = CMD_LNB_UPDATE_REPLY;
+        cmd.args[0x01] = 0;
+        cmd.len = 0x02;
+        ret = tda10071_cmd_execute(priv, &cmd);
+        if (ret)
+                goto error;
+
+        ret = tda10071_rd_regs(priv, cmd.len, reply->msg, reply->msg_len);
+        if (ret)
+                goto error;
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_diseqc_send_burst(struct dvb_frontend *fe,
+        fe_sec_mini_cmd_t fe_sec_mini_cmd)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct tda10071_cmd cmd;
+        int ret, i;
+        u8 tmp, burst;
+
+        if (!priv->warm) {
+                ret = -EFAULT;
+                goto error;
+        }
+
+        dbg("%s: fe_sec_mini_cmd=%d", __func__, fe_sec_mini_cmd);
+
+        switch (fe_sec_mini_cmd) {
+        case SEC_MINI_A:
+                burst = 0;
+                break;
+        case SEC_MINI_B:
+                burst = 1;
+                break;
+        default:
+                dbg("%s: invalid fe_sec_mini_cmd", __func__);
+                ret = -EINVAL;
+                goto error;
+        }
+
+        /* wait LNB TX */
+        for (i = 500, tmp = 0; i && !tmp; i--) {
+                ret = tda10071_rd_reg_mask(priv, 0x47, &tmp, 0x01);
+                if (ret)
+                        goto error;
+
+                msleep(10);
+        }
+
+        dbg("%s: loop=%d", __func__, i);
+
+        if (i == 0) {
+                ret = -ETIMEDOUT;
+                goto error;
+        }
+
+        ret = tda10071_wr_reg_mask(priv, 0x47, 0x00, 0x01);
+        if (ret)
+                goto error;
+
+        cmd.args[0x00] = CMD_LNB_SEND_TONEBURST;
+        cmd.args[0x01] = 0;
+        cmd.args[0x02] = burst;
+        cmd.len = 0x03;
+        ret = tda10071_cmd_execute(priv, &cmd);
+        if (ret)
+                goto error;
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        int ret;
+        u8 tmp;
+
+        *status = 0;
+
+        if (!priv->warm) {
+                ret = 0;
+                goto error;
+        }
+
+        ret = tda10071_rd_reg(priv, 0x39, &tmp);
+        if (ret)
+                goto error;
+
+        if (tmp & 0x01) /* tuner PLL */
+                *status |= FE_HAS_SIGNAL;
+        if (tmp & 0x02) /* demod PLL */
+                *status |= FE_HAS_CARRIER;
+        if (tmp & 0x04) /* viterbi or LDPC*/
+                *status |= FE_HAS_VITERBI;
+        if (tmp & 0x08) /* RS or BCH */
+                *status |= FE_HAS_SYNC | FE_HAS_LOCK;
+
+        priv->fe_status = *status;
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        int ret;
+        u8 buf[2];
+
+        if (!priv->warm || !(priv->fe_status & FE_HAS_LOCK)) {
+                *snr = 0;
+                ret = 0;
+                goto error;
+        }
+
+        ret = tda10071_rd_regs(priv, 0x3a, buf, 2);
+        if (ret)
+                goto error;
+
+        /* Es/No dBx10 */
+        *snr = buf[0] << 8 | buf[1];
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct tda10071_cmd cmd;
+        int ret;
+        u8 tmp;
+
+        if (!priv->warm || !(priv->fe_status & FE_HAS_LOCK)) {
+                *strength = 0;
+                ret = 0;
+                goto error;
+        }
+
+        cmd.args[0x00] = CMD_GET_AGCACC;
+        cmd.args[0x01] = 0;
+        cmd.len = 0x02;
+        ret = tda10071_cmd_execute(priv, &cmd);
+        if (ret)
+                goto error;
+
+        /* input power estimate dBm */
+        ret = tda10071_rd_reg(priv, 0x50, &tmp);
+        if (ret)
+                goto error;
+
+        if (tmp < 181)
+                tmp = 181; /* -75 dBm */
+        else if (tmp > 236)
+                tmp = 236; /* -20 dBm */
+
+        /* scale value to 0x0000-0xffff */
+        *strength = (tmp-181) * 0xffff / (236-181);
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct tda10071_cmd cmd;
+        int ret, i, len;
+        u8 tmp, reg, buf[8];
+
+        if (!priv->warm || !(priv->fe_status & FE_HAS_LOCK)) {
+                *ber = priv->ber = 0;
+                ret = 0;
+                goto error;
+        }
+
+        switch (priv->delivery_system) {
+        case SYS_DVBS:
+                reg = 0x4c;
+                len = 8;
+                i = 1;
+                break;
+        case SYS_DVBS2:
+                reg = 0x4d;
+                len = 4;
+                i = 0;
+                break;
+        default:
+                *ber = priv->ber = 0;
+                return 0;
+        }
+
+        ret = tda10071_rd_reg(priv, reg, &tmp);
+        if (ret)
+                goto error;
+
+        if (priv->meas_count[i] == tmp) {
+                dbg("%s: meas not ready=%02x", __func__, tmp);
+                *ber = priv->ber;
+                return 0;
+        } else {
+                priv->meas_count[i] = tmp;
+        }
+
+        cmd.args[0x00] = CMD_BER_UPDATE_COUNTERS;
+        cmd.args[0x01] = 0;
+        cmd.args[0x02] = i;
+        cmd.len = 0x03;
+        ret = tda10071_cmd_execute(priv, &cmd);
+        if (ret)
+                goto error;
+
+        ret = tda10071_rd_regs(priv, cmd.len, buf, len);
+        if (ret)
+                goto error;
+
+        if (priv->delivery_system == SYS_DVBS) {
+                *ber = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+                priv->ucb += (buf[4] << 8) | buf[5];
+        } else {
+                *ber = (buf[0] << 8) | buf[1];
+        }
+        priv->ber = *ber;
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        int ret = 0;
+
+        if (!priv->warm || !(priv->fe_status & FE_HAS_LOCK)) {
+                *ucblocks = 0;
+                goto error;
+        }
+
+        /* UCB is updated when BER is read. Assume BER is read anyway. */
+
+        *ucblocks = priv->ucb;
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_set_frontend(struct dvb_frontend *fe,
+        struct dvb_frontend_parameters *params)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct tda10071_cmd cmd;
+        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+        int ret, i;
+        u8 mode, rolloff, pilot, inversion, div;
+
+        dbg("%s: delivery_system=%d modulation=%d frequency=%d " \
+                "symbol_rate=%d inversion=%d pilot=%d rolloff=%d", __func__,
+                c->delivery_system, c->modulation, c->frequency,
+                c->symbol_rate, c->inversion, c->pilot, c->rolloff);
+
+        priv->delivery_system = SYS_UNDEFINED;
+
+        if (!priv->warm) {
+                ret = -EFAULT;
+                goto error;
+        }
+
+        switch (c->inversion) {
+        case INVERSION_OFF:
+                inversion = 1;
+                break;
+        case INVERSION_ON:
+                inversion = 0;
+                break;
+        case INVERSION_AUTO:
+                /* 2 = auto; try first on then off
+                 * 3 = auto; try first off then on */
+                inversion = 3;
+                break;
+        default:
+                dbg("%s: invalid inversion", __func__);
+                ret = -EINVAL;
+                goto error;
+        }
+
+        switch (c->delivery_system) {
+        case SYS_DVBS:
+                rolloff = 0;
+                pilot = 2;
+                break;
+        case SYS_DVBS2:
+                switch (c->rolloff) {
+                case ROLLOFF_20:
+                        rolloff = 2;
+                        break;
+                case ROLLOFF_25:
+                        rolloff = 1;
+                        break;
+                case ROLLOFF_35:
+                        rolloff = 0;
+                        break;
+                case ROLLOFF_AUTO:
+                default:
+                        dbg("%s: invalid rolloff", __func__);
+                        ret = -EINVAL;
+                        goto error;
+                }
+
+                switch (c->pilot) {
+                case PILOT_OFF:
+                        pilot = 0;
+                        break;
+                case PILOT_ON:
+                        pilot = 1;
+                        break;
+                case PILOT_AUTO:
+                        pilot = 2;
+                        break;
+                default:
+                        dbg("%s: invalid pilot", __func__);
+                        ret = -EINVAL;
+                        goto error;
+                }
+                break;
+        default:
+                dbg("%s: invalid delivery_system", __func__);
+                ret = -EINVAL;
+                goto error;
+        }
+
+        for (i = 0, mode = 0xff; i < ARRAY_SIZE(TDA10071_MODCOD); i++) {
+                if (c->delivery_system == TDA10071_MODCOD[i].delivery_system &&
+                        c->modulation == TDA10071_MODCOD[i].modulation &&
+                        c->fec_inner == TDA10071_MODCOD[i].fec) {
+                        mode = TDA10071_MODCOD[i].val;
+                        dbg("%s: mode found=%02x", __func__, mode);
+                        break;
+                }
+        }
+
+        if (mode == 0xff) {
+                dbg("%s: invalid parameter combination", __func__);
+                ret = -EINVAL;
+                goto error;
+        }
+
+        if (c->symbol_rate <= 5000000)
+                div = 14;
+        else
+                div = 4;
+
+        ret = tda10071_wr_reg(priv, 0x81, div);
+        if (ret)
+                goto error;
+
+        ret = tda10071_wr_reg(priv, 0xe3, div);
+        if (ret)
+                goto error;
+
+        cmd.args[0x00] = CMD_CHANGE_CHANNEL;
+        cmd.args[0x01] = 0;
+        cmd.args[0x02] = mode;
+        cmd.args[0x03] = (c->frequency >> 16) & 0xff;
+        cmd.args[0x04] = (c->frequency >>  8) & 0xff;
+        cmd.args[0x05] = (c->frequency >>  0) & 0xff;
+        cmd.args[0x06] = ((c->symbol_rate / 1000) >> 8) & 0xff;
+        cmd.args[0x07] = ((c->symbol_rate / 1000) >> 0) & 0xff;
+        cmd.args[0x08] = (tda10071_ops.info.frequency_tolerance >> 8) & 0xff;
+        cmd.args[0x09] = (tda10071_ops.info.frequency_tolerance >> 0) & 0xff;
+        cmd.args[0x0a] = rolloff;
+        cmd.args[0x0b] = inversion;
+        cmd.args[0x0c] = pilot;
+        cmd.args[0x0d] = 0x00;
+        cmd.args[0x0e] = 0x00;
+        cmd.len = 0x0f;
+        ret = tda10071_cmd_execute(priv, &cmd);
+        if (ret)
+                goto error;
+
+        priv->delivery_system = c->delivery_system;
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_get_frontend(struct dvb_frontend *fe,
+        struct dvb_frontend_parameters *p)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+        int ret, i;
+        u8 buf[5], tmp;
+
+        if (!priv->warm || !(priv->fe_status & FE_HAS_LOCK)) {
+                ret = -EFAULT;
+                goto error;
+        }
+
+        ret = tda10071_rd_regs(priv, 0x30, buf, 5);
+        if (ret)
+                goto error;
+
+        tmp = buf[0] & 0x3f;
+        for (i = 0; i < ARRAY_SIZE(TDA10071_MODCOD); i++) {
+                if (tmp == TDA10071_MODCOD[i].val) {
+                        c->modulation = TDA10071_MODCOD[i].modulation;
+                        c->fec_inner = TDA10071_MODCOD[i].fec;
+                        c->delivery_system = TDA10071_MODCOD[i].delivery_system;
+                }
+        }
+
+        switch ((buf[1] >> 0) & 0x01) {
+        case 0:
+                c->inversion = INVERSION_OFF;
+                break;
+        case 1:
+                c->inversion = INVERSION_ON;
+                break;
+        }
+
+        switch ((buf[1] >> 7) & 0x01) {
+        case 0:
+                c->pilot = PILOT_OFF;
+                break;
+        case 1:
+                c->pilot = PILOT_ON;
+                break;
+        }
+
+        c->frequency = (buf[2] << 16) | (buf[3] << 8) | (buf[4] << 0);
+
+        ret = tda10071_rd_regs(priv, 0x52, buf, 3);
+        if (ret)
+                goto error;
+
+        c->symbol_rate = (buf[0] << 16) | (buf[1] << 8) | (buf[2] << 0);
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_init(struct dvb_frontend *fe)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct tda10071_cmd cmd;
+        int ret, i, len, remaining;
+        const struct firmware *fw;
+        u8 *fw_file = TDA10071_DEFAULT_FIRMWARE;
+        u8 tmp, buf[4];
+        struct tda10071_reg_val_mask tab[] = {
+                { 0xcd, 0x00, 0x07 },
+                { 0x80, 0x00, 0x02 },
+                { 0xcd, 0x00, 0xc0 },
+                { 0xce, 0x00, 0x1b },
+                { 0x9d, 0x00, 0x01 },
+                { 0x9d, 0x00, 0x02 },
+                { 0x9e, 0x00, 0x01 },
+                { 0x87, 0x00, 0x80 },
+                { 0xce, 0x00, 0x08 },
+                { 0xce, 0x00, 0x10 },
+        };
+        struct tda10071_reg_val_mask tab2[] = {
+                { 0xf1, 0x70, 0xff },
+                { 0x88, priv->cfg.pll_multiplier, 0x3f },
+                { 0x89, 0x00, 0x10 },
+                { 0x89, 0x10, 0x10 },
+                { 0xc0, 0x01, 0x01 },
+                { 0xc0, 0x00, 0x01 },
+                { 0xe0, 0xff, 0xff },
+                { 0xe0, 0x00, 0xff },
+                { 0x96, 0x1e, 0x7e },
+                { 0x8b, 0x08, 0x08 },
+                { 0x8b, 0x00, 0x08 },
+                { 0x8f, 0x1a, 0x7e },
+                { 0x8c, 0x68, 0xff },
+                { 0x8d, 0x08, 0xff },
+                { 0x8e, 0x4c, 0xff },
+                { 0x8f, 0x01, 0x01 },
+                { 0x8b, 0x04, 0x04 },
+                { 0x8b, 0x00, 0x04 },
+                { 0x87, 0x05, 0x07 },
+                { 0x80, 0x00, 0x20 },
+                { 0xc8, 0x01, 0xff },
+                { 0xb4, 0x47, 0xff },
+                { 0xb5, 0x9c, 0xff },
+                { 0xb6, 0x7d, 0xff },
+                { 0xba, 0x00, 0x03 },
+                { 0xb7, 0x47, 0xff },
+                { 0xb8, 0x9c, 0xff },
+                { 0xb9, 0x7d, 0xff },
+                { 0xba, 0x00, 0x0c },
+                { 0xc8, 0x00, 0xff },
+                { 0xcd, 0x00, 0x04 },
+                { 0xcd, 0x00, 0x20 },
+                { 0xe8, 0x02, 0xff },
+                { 0xcf, 0x20, 0xff },
+                { 0x9b, 0xd7, 0xff },
+                { 0x9a, 0x01, 0x03 },
+                { 0xa8, 0x05, 0x0f },
+                { 0xa8, 0x65, 0xf0 },
+                { 0xa6, 0xa0, 0xf0 },
+                { 0x9d, 0x50, 0xfc },
+                { 0x9e, 0x20, 0xe0 },
+                { 0xa3, 0x1c, 0x7c },
+                { 0xd5, 0x03, 0x03 },
+        };
+
+        /* firmware status */
+        ret = tda10071_rd_reg(priv, 0x51, &tmp);
+        if (ret)
+                goto error;
+
+        if (!tmp) {
+                /* warm state - wake up device from sleep */
+                priv->warm = 1;
+
+                for (i = 0; i < ARRAY_SIZE(tab); i++) {
+                        ret = tda10071_wr_reg_mask(priv, tab[i].reg,
+                                tab[i].val, tab[i].mask);
+                        if (ret)
+                                goto error;
+                }
+
+                cmd.args[0x00] = CMD_SET_SLEEP_MODE;
+                cmd.args[0x01] = 0;
+                cmd.args[0x02] = 0;
+                cmd.len = 0x03;
+                ret = tda10071_cmd_execute(priv, &cmd);
+                if (ret)
+                        goto error;
+        } else {
+                /* cold state - try to download firmware */
+                priv->warm = 0;
+
+                /* request the firmware, this will block and timeout */
+                ret = request_firmware(&fw, fw_file, priv->i2c->dev.parent);
+                if (ret) {
+                        err("did not find the firmware file. (%s) "
+                                "Please see linux/Documentation/dvb/ for more" \
+                                " details on firmware-problems. (%d)",
+                                fw_file, ret);
+                        goto error;
+                }
+
+                /* init */
+                for (i = 0; i < ARRAY_SIZE(tab2); i++) {
+                        ret = tda10071_wr_reg_mask(priv, tab2[i].reg,
+                                tab2[i].val, tab2[i].mask);
+                        if (ret)
+                                goto error_release_firmware;
+                }
+
+                /*  download firmware */
+                ret = tda10071_wr_reg(priv, 0xe0, 0x7f);
+                if (ret)
+                        goto error_release_firmware;
+
+                ret = tda10071_wr_reg(priv, 0xf7, 0x81);
+                if (ret)
+                        goto error_release_firmware;
+
+                ret = tda10071_wr_reg(priv, 0xf8, 0x00);
+                if (ret)
+                        goto error_release_firmware;
+
+                ret = tda10071_wr_reg(priv, 0xf9, 0x00);
+                if (ret)
+                        goto error_release_firmware;
+
+                info("found a '%s' in cold state, will try to load a firmware",
+                        tda10071_ops.info.name);
+
+                info("downloading firmware from file '%s'", fw_file);
+
+                for (remaining = fw->size; remaining > 0;
+                        remaining -= (priv->cfg.i2c_wr_max - 1)) {
+                        len = remaining;
+                        if (len > (priv->cfg.i2c_wr_max - 1))
+                                len = (priv->cfg.i2c_wr_max - 1);
+
+                        ret = tda10071_wr_regs(priv, 0xfa,
+                                (u8 *) &fw->data[fw->size - remaining], len);
+                        if (ret) {
+                                err("firmware download failed=%d", ret);
+                                if (ret)
+                                        goto error_release_firmware;
+                        }
+                }
+                release_firmware(fw);
+
+                ret = tda10071_wr_reg(priv, 0xf7, 0x0c);
+                if (ret)
+                        goto error;
+
+                ret = tda10071_wr_reg(priv, 0xe0, 0x00);
+                if (ret)
+                        goto error;
+
+                /* wait firmware start */
+                msleep(250);
+
+                /* firmware status */
+                ret = tda10071_rd_reg(priv, 0x51, &tmp);
+                if (ret)
+                        goto error;
+
+                if (tmp) {
+                        info("firmware did not run");
+                        ret = -EFAULT;
+                        goto error;
+                } else {
+                        priv->warm = 1;
+                }
+
+                cmd.args[0x00] = CMD_GET_FW_VERSION;
+                cmd.len = 0x01;
+                ret = tda10071_cmd_execute(priv, &cmd);
+                if (ret)
+                        goto error;
+
+                ret = tda10071_rd_regs(priv, cmd.len, buf, 4);
+                if (ret)
+                        goto error;
+
+                info("firmware version %d.%d.%d.%d",
+                        buf[0], buf[1], buf[2], buf[3]);
+                info("found a '%s' in warm state.", tda10071_ops.info.name);
+
+                ret = tda10071_rd_regs(priv, 0x81, buf, 2);
+                if (ret)
+                        goto error;
+
+                cmd.args[0x00] = CMD_DEMOD_INIT;
+                cmd.args[0x01] = ((priv->cfg.xtal / 1000) >> 8) & 0xff;
+                cmd.args[0x02] = ((priv->cfg.xtal / 1000) >> 0) & 0xff;
+                cmd.args[0x03] = buf[0];
+                cmd.args[0x04] = buf[1];
+                cmd.args[0x05] = priv->cfg.pll_multiplier;
+                cmd.args[0x06] = priv->cfg.spec_inv;
+                cmd.args[0x07] = 0x00;
+                cmd.len = 0x08;
+                ret = tda10071_cmd_execute(priv, &cmd);
+                if (ret)
+                        goto error;
+
+                cmd.args[0x00] = CMD_TUNER_INIT;
+                cmd.args[0x01] = 0x00;
+                cmd.args[0x02] = 0x00;
+                cmd.args[0x03] = 0x00;
+                cmd.args[0x04] = 0x00;
+                cmd.args[0x05] = 0x14;
+                cmd.args[0x06] = 0x00;
+                cmd.args[0x07] = 0x03;
+                cmd.args[0x08] = 0x02;
+                cmd.args[0x09] = 0x02;
+                cmd.args[0x0a] = 0x00;
+                cmd.args[0x0b] = 0x00;
+                cmd.args[0x0c] = 0x00;
+                cmd.args[0x0d] = 0x00;
+                cmd.args[0x0e] = 0x00;
+                cmd.len = 0x0f;
+                ret = tda10071_cmd_execute(priv, &cmd);
+                if (ret)
+                        goto error;
+
+                cmd.args[0x00] = CMD_MPEG_CONFIG;
+                cmd.args[0x01] = 0;
+                cmd.args[0x02] = priv->cfg.ts_mode;
+                cmd.args[0x03] = 0x00;
+                cmd.args[0x04] = 0x04;
+                cmd.args[0x05] = 0x00;
+                cmd.len = 0x06;
+                ret = tda10071_cmd_execute(priv, &cmd);
+                if (ret)
+                        goto error;
+
+                ret = tda10071_wr_reg_mask(priv, 0xf0, 0x01, 0x01);
+                if (ret)
+                        goto error;
+
+                cmd.args[0x00] = CMD_LNB_CONFIG;
+                cmd.args[0x01] = 0;
+                cmd.args[0x02] = 150;
+                cmd.args[0x03] = 3;
+                cmd.args[0x04] = 22;
+                cmd.args[0x05] = 1;
+                cmd.args[0x06] = 1;
+                cmd.args[0x07] = 30;
+                cmd.args[0x08] = 30;
+                cmd.args[0x09] = 30;
+                cmd.args[0x0a] = 30;
+                cmd.len = 0x0b;
+                ret = tda10071_cmd_execute(priv, &cmd);
+                if (ret)
+                        goto error;
+
+                cmd.args[0x00] = CMD_BER_CONTROL;
+                cmd.args[0x01] = 0;
+                cmd.args[0x02] = 14;
+                cmd.args[0x03] = 14;
+                cmd.len = 0x04;
+                ret = tda10071_cmd_execute(priv, &cmd);
+                if (ret)
+                        goto error;
+        }
+
+        return ret;
+error_release_firmware:
+        release_firmware(fw);
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_sleep(struct dvb_frontend *fe)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        struct tda10071_cmd cmd;
+        int ret, i;
+        struct tda10071_reg_val_mask tab[] = {
+                { 0xcd, 0x07, 0x07 },
+                { 0x80, 0x02, 0x02 },
+                { 0xcd, 0xc0, 0xc0 },
+                { 0xce, 0x1b, 0x1b },
+                { 0x9d, 0x01, 0x01 },
+                { 0x9d, 0x02, 0x02 },
+                { 0x9e, 0x01, 0x01 },
+                { 0x87, 0x80, 0x80 },
+                { 0xce, 0x08, 0x08 },
+                { 0xce, 0x10, 0x10 },
+        };
+
+        if (!priv->warm) {
+                ret = -EFAULT;
+                goto error;
+        }
+
+        cmd.args[0x00] = CMD_SET_SLEEP_MODE;
+        cmd.args[0x01] = 0;
+        cmd.args[0x02] = 1;
+        cmd.len = 0x03;
+        ret = tda10071_cmd_execute(priv, &cmd);
+        if (ret)
+                goto error;
+
+        for (i = 0; i < ARRAY_SIZE(tab); i++) {
+                ret = tda10071_wr_reg_mask(priv, tab[i].reg, tab[i].val,
+                        tab[i].mask);
+                if (ret)
+                        goto error;
+        }
+
+        return ret;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int tda10071_get_tune_settings(struct dvb_frontend *fe,
+        struct dvb_frontend_tune_settings *s)
+{
+        s->min_delay_ms = 8000;
+        s->step_size = 0;
+        s->max_drift = 0;
+
+        return 0;
+}
+
+static void tda10071_release(struct dvb_frontend *fe)
+{
+        struct tda10071_priv *priv = fe->demodulator_priv;
+        kfree(priv);
+}
+
+struct dvb_frontend *tda10071_attach(const struct tda10071_config *config,
+        struct i2c_adapter *i2c)
+{
+        int ret;
+        struct tda10071_priv *priv = NULL;
+        u8 tmp;
+
+        /* allocate memory for the internal priv */
+        priv = kzalloc(sizeof(struct tda10071_priv), GFP_KERNEL);
+        if (priv == NULL) {
+                ret = -ENOMEM;
+                goto error;
+        }
+
+        /* setup the priv */
+        priv->i2c = i2c;
+        memcpy(&priv->cfg, config, sizeof(struct tda10071_config));
+
+        /* chip ID */
+        ret = tda10071_rd_reg(priv, 0xff, &tmp);
+        if (ret || tmp != 0x0f)
+                goto error;
+
+        /* chip type */
+        ret = tda10071_rd_reg(priv, 0xdd, &tmp);
+        if (ret || tmp != 0x00)
+                goto error;
+
+        /* chip version */
+        ret = tda10071_rd_reg(priv, 0xfe, &tmp);
+        if (ret || tmp != 0x01)
+                goto error;
+
+        /* create dvb_frontend */
+        memcpy(&priv->fe.ops, &tda10071_ops, sizeof(struct dvb_frontend_ops));
+        priv->fe.demodulator_priv = priv;
+
+        return &priv->fe;
+error:
+        dbg("%s: failed=%d", __func__, ret);
+        kfree(priv);
+        return NULL;
+}
+EXPORT_SYMBOL(tda10071_attach);
+
+static struct dvb_frontend_ops tda10071_ops = {
+        .info = {
+                .name = "NXP TDA10071",
+                .type = FE_QPSK,
+                .frequency_min = 950000,
+                .frequency_max = 2150000,
+                .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_8_9 |
+                        FE_CAN_FEC_AUTO |
+                        FE_CAN_QPSK |
+                        FE_CAN_RECOVER |
+                        FE_CAN_2G_MODULATION
+        },
+
+        .release = tda10071_release,
+
+        .get_tune_settings = tda10071_get_tune_settings,
+
+        .init = tda10071_init,
+        .sleep = tda10071_sleep,
+
+        .set_frontend = tda10071_set_frontend,
+        .get_frontend = tda10071_get_frontend,
+
+        .read_status = tda10071_read_status,
+        .read_snr = tda10071_read_snr,
+        .read_signal_strength = tda10071_read_signal_strength,
+        .read_ber = tda10071_read_ber,
+        .read_ucblocks = tda10071_read_ucblocks,
+
+        .diseqc_send_master_cmd = tda10071_diseqc_send_master_cmd,
+        .diseqc_recv_slave_reply = tda10071_diseqc_recv_slave_reply,
+        .diseqc_send_burst = tda10071_diseqc_send_burst,
+
+        .set_tone = tda10071_set_tone,
+        .set_voltage = tda10071_set_voltage,
+};
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("NXP TDA10071 DVB-S/S2 demodulator driver");
+MODULE_LICENSE("GPL");