Added missing tegra files.HEADmaster

1 files changed, 775 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/tda10086.c b/drivers/media/dvb/frontends/tda10086.c
new file mode 100644
index 00000000000..f2c8faac6f3
--- /dev/null
+++ b/drivers/media/dvb/frontends/tda10086.c
@@ -0,0 +1,775 @@
+  /*
+     Driver for Philips tda10086 DVBS Demodulator
+
+     (c) 2006 Andrew de Quincey
+
+     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/module.h>
+#include <linux/device.h>
+#include <linux/jiffies.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include "dvb_frontend.h"
+#include "tda10086.h"
+
+#define SACLK 96000000
+
+struct tda10086_state {
+        struct i2c_adapter* i2c;
+        const struct tda10086_config* config;
+        struct dvb_frontend frontend;
+
+        /* private demod data */
+        u32 frequency;
+        u32 symbol_rate;
+        bool has_lock;
+};
+
+static int debug;
+#define dprintk(args...) \
+        do { \
+                if (debug) printk(KERN_DEBUG "tda10086: " args); \
+        } while (0)
+
+static int tda10086_write_byte(struct tda10086_state *state, int reg, int data)
+{
+        int ret;
+        u8 b0[] = { reg, data };
+        struct i2c_msg msg = { .flags = 0, .buf = b0, .len = 2 };
+
+        msg.addr = state->config->demod_address;
+        ret = i2c_transfer(state->i2c, &msg, 1);
+
+        if (ret != 1)
+                dprintk("%s: error reg=0x%x, data=0x%x, ret=%i\n",
+                        __func__, reg, data, ret);
+
+        return (ret != 1) ? ret : 0;
+}
+
+static int tda10086_read_byte(struct tda10086_state *state, int reg)
+{
+        int ret;
+        u8 b0[] = { reg };
+        u8 b1[] = { 0 };
+        struct i2c_msg msg[] = {{ .flags = 0, .buf = b0, .len = 1 },
+                                { .flags = I2C_M_RD, .buf = b1, .len = 1 }};
+
+        msg[0].addr = state->config->demod_address;
+        msg[1].addr = state->config->demod_address;
+        ret = i2c_transfer(state->i2c, msg, 2);
+
+        if (ret != 2) {
+                dprintk("%s: error reg=0x%x, ret=%i\n", __func__, reg,
+                        ret);
+                return ret;
+        }
+
+        return b1[0];
+}
+
+static int tda10086_write_mask(struct tda10086_state *state, int reg, int mask, int data)
+{
+        int val;
+
+        /* read a byte and check */
+        val = tda10086_read_byte(state, reg);
+        if (val < 0)
+                return val;
+
+        /* mask if off */
+        val = val & ~mask;
+        val |= data & 0xff;
+
+        /* write it out again */
+        return tda10086_write_byte(state, reg, val);
+}
+
+static int tda10086_init(struct dvb_frontend* fe)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+        u8 t22k_off = 0x80;
+
+        dprintk ("%s\n", __func__);
+
+        if (state->config->diseqc_tone)
+                t22k_off = 0;
+        /* reset */
+        tda10086_write_byte(state, 0x00, 0x00);
+        msleep(10);
+
+        /* misc setup */
+        tda10086_write_byte(state, 0x01, 0x94);
+        tda10086_write_byte(state, 0x02, 0x35); /* NOTE: TT drivers appear to disable CSWP */
+        tda10086_write_byte(state, 0x03, 0xe4);
+        tda10086_write_byte(state, 0x04, 0x43);
+        tda10086_write_byte(state, 0x0c, 0x0c);
+        tda10086_write_byte(state, 0x1b, 0xb0); /* noise threshold */
+        tda10086_write_byte(state, 0x20, 0x89); /* misc */
+        tda10086_write_byte(state, 0x30, 0x04); /* acquisition period length */
+        tda10086_write_byte(state, 0x32, 0x00); /* irq off */
+        tda10086_write_byte(state, 0x31, 0x56); /* setup AFC */
+
+        /* setup PLL (this assumes SACLK = 96MHz) */
+        tda10086_write_byte(state, 0x55, 0x2c); /* misc PLL setup */
+        if (state->config->xtal_freq == TDA10086_XTAL_16M) {
+                tda10086_write_byte(state, 0x3a, 0x0b); /* M=12 */
+                tda10086_write_byte(state, 0x3b, 0x01); /* P=2 */
+        } else {
+                tda10086_write_byte(state, 0x3a, 0x17); /* M=24 */
+                tda10086_write_byte(state, 0x3b, 0x00); /* P=1 */
+        }
+        tda10086_write_mask(state, 0x55, 0x20, 0x00); /* powerup PLL */
+
+        /* setup TS interface */
+        tda10086_write_byte(state, 0x11, 0x81);
+        tda10086_write_byte(state, 0x12, 0x81);
+        tda10086_write_byte(state, 0x19, 0x40); /* parallel mode A + MSBFIRST */
+        tda10086_write_byte(state, 0x56, 0x80); /* powerdown WPLL - unused in the mode we use */
+        tda10086_write_byte(state, 0x57, 0x08); /* bypass WPLL - unused in the mode we use */
+        tda10086_write_byte(state, 0x10, 0x2a);
+
+        /* setup ADC */
+        tda10086_write_byte(state, 0x58, 0x61); /* ADC setup */
+        tda10086_write_mask(state, 0x58, 0x01, 0x00); /* powerup ADC */
+
+        /* setup AGC */
+        tda10086_write_byte(state, 0x05, 0x0B);
+        tda10086_write_byte(state, 0x37, 0x63);
+        tda10086_write_byte(state, 0x3f, 0x0a); /* NOTE: flydvb varies it */
+        tda10086_write_byte(state, 0x40, 0x64);
+        tda10086_write_byte(state, 0x41, 0x4f);
+        tda10086_write_byte(state, 0x42, 0x43);
+
+        /* setup viterbi */
+        tda10086_write_byte(state, 0x1a, 0x11); /* VBER 10^6, DVB, QPSK */
+
+        /* setup carrier recovery */
+        tda10086_write_byte(state, 0x3d, 0x80);
+
+        /* setup SEC */
+        tda10086_write_byte(state, 0x36, t22k_off); /* all SEC off, 22k tone */
+        tda10086_write_byte(state, 0x34, (((1<<19) * (22000/1000)) / (SACLK/1000)));
+        tda10086_write_byte(state, 0x35, (((1<<19) * (22000/1000)) / (SACLK/1000)) >> 8);
+
+        return 0;
+}
+
+static void tda10086_diseqc_wait(struct tda10086_state *state)
+{
+        unsigned long timeout = jiffies + msecs_to_jiffies(200);
+        while (!(tda10086_read_byte(state, 0x50) & 0x01)) {
+                if(time_after(jiffies, timeout)) {
+                        printk("%s: diseqc queue not ready, command may be lost.\n", __func__);
+                        break;
+                }
+                msleep(10);
+        }
+}
+
+static int tda10086_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+        u8 t22k_off = 0x80;
+
+        dprintk ("%s\n", __func__);
+
+        if (state->config->diseqc_tone)
+                t22k_off = 0;
+
+        switch (tone) {
+        case SEC_TONE_OFF:
+                tda10086_write_byte(state, 0x36, t22k_off);
+                break;
+
+        case SEC_TONE_ON:
+                tda10086_write_byte(state, 0x36, 0x01 + t22k_off);
+                break;
+        }
+
+        return 0;
+}
+
+static int tda10086_send_master_cmd (struct dvb_frontend* fe,
+                                    struct dvb_diseqc_master_cmd* cmd)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+        int i;
+        u8 oldval;
+        u8 t22k_off = 0x80;
+
+        dprintk ("%s\n", __func__);
+
+        if (state->config->diseqc_tone)
+                t22k_off = 0;
+
+        if (cmd->msg_len > 6)
+                return -EINVAL;
+        oldval = tda10086_read_byte(state, 0x36);
+
+        for(i=0; i< cmd->msg_len; i++) {
+                tda10086_write_byte(state, 0x48+i, cmd->msg[i]);
+        }
+        tda10086_write_byte(state, 0x36, (0x08 + t22k_off)
+                                        | ((cmd->msg_len - 1) << 4));
+
+        tda10086_diseqc_wait(state);
+
+        tda10086_write_byte(state, 0x36, oldval);
+
+        return 0;
+}
+
+static int tda10086_send_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+        u8 oldval = tda10086_read_byte(state, 0x36);
+        u8 t22k_off = 0x80;
+
+        dprintk ("%s\n", __func__);
+
+        if (state->config->diseqc_tone)
+                t22k_off = 0;
+
+        switch(minicmd) {
+        case SEC_MINI_A:
+                tda10086_write_byte(state, 0x36, 0x04 + t22k_off);
+                break;
+
+        case SEC_MINI_B:
+                tda10086_write_byte(state, 0x36, 0x06 + t22k_off);
+                break;
+        }
+
+        tda10086_diseqc_wait(state);
+
+        tda10086_write_byte(state, 0x36, oldval);
+
+        return 0;
+}
+
+static int tda10086_set_inversion(struct tda10086_state *state,
+                                  struct dvb_frontend_parameters *fe_params)
+{
+        u8 invval = 0x80;
+
+        dprintk ("%s %i %i\n", __func__, fe_params->inversion, state->config->invert);
+
+        switch(fe_params->inversion) {
+        case INVERSION_OFF:
+                if (state->config->invert)
+                        invval = 0x40;
+                break;
+        case INVERSION_ON:
+                if (!state->config->invert)
+                        invval = 0x40;
+                break;
+        case INVERSION_AUTO:
+                invval = 0x00;
+                break;
+        }
+        tda10086_write_mask(state, 0x0c, 0xc0, invval);
+
+        return 0;
+}
+
+static int tda10086_set_symbol_rate(struct tda10086_state *state,
+                                    struct dvb_frontend_parameters *fe_params)
+{
+        u8 dfn = 0;
+        u8 afs = 0;
+        u8 byp = 0;
+        u8 reg37 = 0x43;
+        u8 reg42 = 0x43;
+        u64 big;
+        u32 tmp;
+        u32 bdr;
+        u32 bdri;
+        u32 symbol_rate = fe_params->u.qpsk.symbol_rate;
+
+        dprintk ("%s %i\n", __func__, symbol_rate);
+
+        /* setup the decimation and anti-aliasing filters.. */
+        if (symbol_rate < (u32) (SACLK * 0.0137)) {
+                dfn=4;
+                afs=1;
+        } else if (symbol_rate < (u32) (SACLK * 0.0208)) {
+                dfn=4;
+                afs=0;
+        } else if (symbol_rate < (u32) (SACLK * 0.0270)) {
+                dfn=3;
+                afs=1;
+        } else if (symbol_rate < (u32) (SACLK * 0.0416)) {
+                dfn=3;
+                afs=0;
+        } else if (symbol_rate < (u32) (SACLK * 0.0550)) {
+                dfn=2;
+                afs=1;
+        } else if (symbol_rate < (u32) (SACLK * 0.0833)) {
+                dfn=2;
+                afs=0;
+        } else if (symbol_rate < (u32) (SACLK * 0.1100)) {
+                dfn=1;
+                afs=1;
+        } else if (symbol_rate < (u32) (SACLK * 0.1666)) {
+                dfn=1;
+                afs=0;
+        } else if (symbol_rate < (u32) (SACLK * 0.2200)) {
+                dfn=0;
+                afs=1;
+        } else if (symbol_rate < (u32) (SACLK * 0.3333)) {
+                dfn=0;
+                afs=0;
+        } else {
+                reg37 = 0x63;
+                reg42 = 0x4f;
+                byp=1;
+        }
+
+        /* calculate BDR */
+        big = (1ULL<<21) * ((u64) symbol_rate/1000ULL) * (1ULL<<dfn);
+        big += ((SACLK/1000ULL)-1ULL);
+        do_div(big, (SACLK/1000ULL));
+        bdr = big & 0xfffff;
+
+        /* calculate BDRI */
+        tmp = (1<<dfn)*(symbol_rate/1000);
+        bdri = ((32 * (SACLK/1000)) + (tmp-1)) / tmp;
+
+        tda10086_write_byte(state, 0x21, (afs << 7) | dfn);
+        tda10086_write_mask(state, 0x20, 0x08, byp << 3);
+        tda10086_write_byte(state, 0x06, bdr);
+        tda10086_write_byte(state, 0x07, bdr >> 8);
+        tda10086_write_byte(state, 0x08, bdr >> 16);
+        tda10086_write_byte(state, 0x09, bdri);
+        tda10086_write_byte(state, 0x37, reg37);
+        tda10086_write_byte(state, 0x42, reg42);
+
+        return 0;
+}
+
+static int tda10086_set_fec(struct tda10086_state *state,
+                            struct dvb_frontend_parameters *fe_params)
+{
+        u8 fecval;
+
+        dprintk ("%s %i\n", __func__, fe_params->u.qpsk.fec_inner);
+
+        switch(fe_params->u.qpsk.fec_inner) {
+        case FEC_1_2:
+                fecval = 0x00;
+                break;
+        case FEC_2_3:
+                fecval = 0x01;
+                break;
+        case FEC_3_4:
+                fecval = 0x02;
+                break;
+        case FEC_4_5:
+                fecval = 0x03;
+                break;
+        case FEC_5_6:
+                fecval = 0x04;
+                break;
+        case FEC_6_7:
+                fecval = 0x05;
+                break;
+        case FEC_7_8:
+                fecval = 0x06;
+                break;
+        case FEC_8_9:
+                fecval = 0x07;
+                break;
+        case FEC_AUTO:
+                fecval = 0x08;
+                break;
+        default:
+                return -1;
+        }
+        tda10086_write_byte(state, 0x0d, fecval);
+
+        return 0;
+}
+
+static int tda10086_set_frontend(struct dvb_frontend* fe,
+                                 struct dvb_frontend_parameters *fe_params)
+{
+        struct tda10086_state *state = fe->demodulator_priv;
+        int ret;
+        u32 freq = 0;
+        int freqoff;
+
+        dprintk ("%s\n", __func__);
+
+        /* modify parameters for tuning */
+        tda10086_write_byte(state, 0x02, 0x35);
+        state->has_lock = false;
+
+        /* set params */
+        if (fe->ops.tuner_ops.set_params) {
+                fe->ops.tuner_ops.set_params(fe, fe_params);
+                if (fe->ops.i2c_gate_ctrl)
+                        fe->ops.i2c_gate_ctrl(fe, 0);
+
+                if (fe->ops.tuner_ops.get_frequency)
+                        fe->ops.tuner_ops.get_frequency(fe, &freq);
+                if (fe->ops.i2c_gate_ctrl)
+                        fe->ops.i2c_gate_ctrl(fe, 0);
+        }
+
+        /* calcluate the frequency offset (in *Hz* not kHz) */
+        freqoff = fe_params->frequency - freq;
+        freqoff = ((1<<16) * freqoff) / (SACLK/1000);
+        tda10086_write_byte(state, 0x3d, 0x80 | ((freqoff >> 8) & 0x7f));
+        tda10086_write_byte(state, 0x3e, freqoff);
+
+        if ((ret = tda10086_set_inversion(state, fe_params)) < 0)
+                return ret;
+        if ((ret = tda10086_set_symbol_rate(state, fe_params)) < 0)
+                return ret;
+        if ((ret = tda10086_set_fec(state, fe_params)) < 0)
+                return ret;
+
+        /* soft reset + disable TS output until lock */
+        tda10086_write_mask(state, 0x10, 0x40, 0x40);
+        tda10086_write_mask(state, 0x00, 0x01, 0x00);
+
+        state->symbol_rate = fe_params->u.qpsk.symbol_rate;
+        state->frequency = fe_params->frequency;
+        return 0;
+}
+
+static int tda10086_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *fe_params)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+        u8 val;
+        int tmp;
+        u64 tmp64;
+
+        dprintk ("%s\n", __func__);
+
+        /* check for invalid symbol rate */
+        if (fe_params->u.qpsk.symbol_rate < 500000)
+                return -EINVAL;
+
+        /* calculate the updated frequency (note: we convert from Hz->kHz) */
+        tmp64 = tda10086_read_byte(state, 0x52);
+        tmp64 |= (tda10086_read_byte(state, 0x51) << 8);
+        if (tmp64 & 0x8000)
+                tmp64 |= 0xffffffffffff0000ULL;
+        tmp64 = (tmp64 * (SACLK/1000ULL));
+        do_div(tmp64, (1ULL<<15) * (1ULL<<1));
+        fe_params->frequency = (int) state->frequency + (int) tmp64;
+
+        /* the inversion */
+        val = tda10086_read_byte(state, 0x0c);
+        if (val & 0x80) {
+                switch(val & 0x40) {
+                case 0x00:
+                        fe_params->inversion = INVERSION_OFF;
+                        if (state->config->invert)
+                                fe_params->inversion = INVERSION_ON;
+                        break;
+                default:
+                        fe_params->inversion = INVERSION_ON;
+                        if (state->config->invert)
+                                fe_params->inversion = INVERSION_OFF;
+                        break;
+                }
+        } else {
+                tda10086_read_byte(state, 0x0f);
+                switch(val & 0x02) {
+                case 0x00:
+                        fe_params->inversion = INVERSION_OFF;
+                        if (state->config->invert)
+                                fe_params->inversion = INVERSION_ON;
+                        break;
+                default:
+                        fe_params->inversion = INVERSION_ON;
+                        if (state->config->invert)
+                                fe_params->inversion = INVERSION_OFF;
+                        break;
+                }
+        }
+
+        /* calculate the updated symbol rate */
+        tmp = tda10086_read_byte(state, 0x1d);
+        if (tmp & 0x80)
+                tmp |= 0xffffff00;
+        tmp = (tmp * 480 * (1<<1)) / 128;
+        tmp = ((state->symbol_rate/1000) * tmp) / (1000000/1000);
+        fe_params->u.qpsk.symbol_rate = state->symbol_rate + tmp;
+
+        /* the FEC */
+        val = (tda10086_read_byte(state, 0x0d) & 0x70) >> 4;
+        switch(val) {
+        case 0x00:
+                fe_params->u.qpsk.fec_inner = FEC_1_2;
+                break;
+        case 0x01:
+                fe_params->u.qpsk.fec_inner = FEC_2_3;
+                break;
+        case 0x02:
+                fe_params->u.qpsk.fec_inner = FEC_3_4;
+                break;
+        case 0x03:
+                fe_params->u.qpsk.fec_inner = FEC_4_5;
+                break;
+        case 0x04:
+                fe_params->u.qpsk.fec_inner = FEC_5_6;
+                break;
+        case 0x05:
+                fe_params->u.qpsk.fec_inner = FEC_6_7;
+                break;
+        case 0x06:
+                fe_params->u.qpsk.fec_inner = FEC_7_8;
+                break;
+        case 0x07:
+                fe_params->u.qpsk.fec_inner = FEC_8_9;
+                break;
+        }
+
+        return 0;
+}
+
+static int tda10086_read_status(struct dvb_frontend* fe, fe_status_t *fe_status)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+        u8 val;
+
+        dprintk ("%s\n", __func__);
+
+        val = tda10086_read_byte(state, 0x0e);
+        *fe_status = 0;
+        if (val & 0x01)
+                *fe_status |= FE_HAS_SIGNAL;
+        if (val & 0x02)
+                *fe_status |= FE_HAS_CARRIER;
+        if (val & 0x04)
+                *fe_status |= FE_HAS_VITERBI;
+        if (val & 0x08)
+                *fe_status |= FE_HAS_SYNC;
+        if (val & 0x10) {
+                *fe_status |= FE_HAS_LOCK;
+                if (!state->has_lock) {
+                        state->has_lock = true;
+                        /* modify parameters for stable reception */
+                        tda10086_write_byte(state, 0x02, 0x00);
+                }
+        }
+
+        return 0;
+}
+
+static int tda10086_read_signal_strength(struct dvb_frontend* fe, u16 * signal)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+        u8 _str;
+
+        dprintk ("%s\n", __func__);
+
+        _str = 0xff - tda10086_read_byte(state, 0x43);
+        *signal = (_str << 8) | _str;
+
+        return 0;
+}
+
+static int tda10086_read_snr(struct dvb_frontend* fe, u16 * snr)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+        u8 _snr;
+
+        dprintk ("%s\n", __func__);
+
+        _snr = 0xff - tda10086_read_byte(state, 0x1c);
+        *snr = (_snr << 8) | _snr;
+
+        return 0;
+}
+
+static int tda10086_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+
+        dprintk ("%s\n", __func__);
+
+        /* read it */
+        *ucblocks = tda10086_read_byte(state, 0x18) & 0x7f;
+
+        /* reset counter */
+        tda10086_write_byte(state, 0x18, 0x00);
+        tda10086_write_byte(state, 0x18, 0x80);
+
+        return 0;
+}
+
+static int tda10086_read_ber(struct dvb_frontend* fe, u32* ber)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+
+        dprintk ("%s\n", __func__);
+
+        /* read it */
+        *ber = 0;
+        *ber |= tda10086_read_byte(state, 0x15);
+        *ber |= tda10086_read_byte(state, 0x16) << 8;
+        *ber |= (tda10086_read_byte(state, 0x17) & 0xf) << 16;
+
+        return 0;
+}
+
+static int tda10086_sleep(struct dvb_frontend* fe)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+
+        dprintk ("%s\n", __func__);
+
+        tda10086_write_mask(state, 0x00, 0x08, 0x08);
+
+        return 0;
+}
+
+static int tda10086_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
+{
+        struct tda10086_state* state = fe->demodulator_priv;
+
+        dprintk ("%s\n", __func__);
+
+        if (enable) {
+                tda10086_write_mask(state, 0x00, 0x10, 0x10);
+        } else {
+                tda10086_write_mask(state, 0x00, 0x10, 0x00);
+        }
+
+        return 0;
+}
+
+static int tda10086_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
+{
+        if (fesettings->parameters.u.qpsk.symbol_rate > 20000000) {
+                fesettings->min_delay_ms = 50;
+                fesettings->step_size = 2000;
+                fesettings->max_drift = 8000;
+        } else if (fesettings->parameters.u.qpsk.symbol_rate > 12000000) {
+                fesettings->min_delay_ms = 100;
+                fesettings->step_size = 1500;
+                fesettings->max_drift = 9000;
+        } else if (fesettings->parameters.u.qpsk.symbol_rate > 8000000) {
+                fesettings->min_delay_ms = 100;
+                fesettings->step_size = 1000;
+                fesettings->max_drift = 8000;
+        } else if (fesettings->parameters.u.qpsk.symbol_rate > 4000000) {
+                fesettings->min_delay_ms = 100;
+                fesettings->step_size = 500;
+                fesettings->max_drift = 7000;
+        } else if (fesettings->parameters.u.qpsk.symbol_rate > 2000000) {
+                fesettings->min_delay_ms = 200;
+                fesettings->step_size = (fesettings->parameters.u.qpsk.symbol_rate / 8000);
+                fesettings->max_drift = 14 * fesettings->step_size;
+        } else {
+                fesettings->min_delay_ms = 200;
+                fesettings->step_size = (fesettings->parameters.u.qpsk.symbol_rate / 8000);
+                fesettings->max_drift = 18 * fesettings->step_size;
+        }
+
+        return 0;
+}
+
+static void tda10086_release(struct dvb_frontend* fe)
+{
+        struct tda10086_state *state = fe->demodulator_priv;
+        tda10086_sleep(fe);
+        kfree(state);
+}
+
+static struct dvb_frontend_ops tda10086_ops = {
+
+        .info = {
+                .name     = "Philips TDA10086 DVB-S",
+                .type     = FE_QPSK,
+                .frequency_min    = 950000,
+                .frequency_max    = 2150000,
+                .frequency_stepsize = 125,     /* kHz for QPSK frontends */
+                .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_5_6 | FE_CAN_FEC_6_7 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
+                        FE_CAN_QPSK
+        },
+
+        .release = tda10086_release,
+
+        .init = tda10086_init,
+        .sleep = tda10086_sleep,
+        .i2c_gate_ctrl = tda10086_i2c_gate_ctrl,
+
+        .set_frontend = tda10086_set_frontend,
+        .get_frontend = tda10086_get_frontend,
+        .get_tune_settings = tda10086_get_tune_settings,
+
+        .read_status = tda10086_read_status,
+        .read_ber = tda10086_read_ber,
+        .read_signal_strength = tda10086_read_signal_strength,
+        .read_snr = tda10086_read_snr,
+        .read_ucblocks = tda10086_read_ucblocks,
+
+        .diseqc_send_master_cmd = tda10086_send_master_cmd,
+        .diseqc_send_burst = tda10086_send_burst,
+        .set_tone = tda10086_set_tone,
+};
+
+struct dvb_frontend* tda10086_attach(const struct tda10086_config* config,
+                                     struct i2c_adapter* i2c)
+{
+        struct tda10086_state *state;
+
+        dprintk ("%s\n", __func__);
+
+        /* allocate memory for the internal state */
+        state = kzalloc(sizeof(struct tda10086_state), GFP_KERNEL);
+        if (!state)
+                return NULL;
+
+        /* setup the state */
+        state->config = config;
+        state->i2c = i2c;
+
+        /* check if the demod is there */
+        if (tda10086_read_byte(state, 0x1e) != 0xe1) {
+                kfree(state);
+                return NULL;
+        }
+
+        /* create dvb_frontend */
+        memcpy(&state->frontend.ops, &tda10086_ops, sizeof(struct dvb_frontend_ops));
+        state->frontend.demodulator_priv = state;
+        return &state->frontend;
+}
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("Philips TDA10086 DVB-S Demodulator");
+MODULE_AUTHOR("Andrew de Quincey");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(tda10086_attach);