V4L/DVB (4396): Add drivers for tda10086 + tda826x chips (6bca3580) · Commits · jan.koester / Linux

drivers/media/dvb/frontends/Kconfig

+16 −0

Original line number	Diff line number	Diff line
		@@ -46,6 +46,13 @@ config DVB_S5H1420
		help
		A DVB-S tuner module. Say Y when you want to support this frontend.

		config DVB_TDA10086
		tristate "Philips TDA10086 based"
		depends on DVB_CORE
		default m if DVB_FE_CUSTOMISE
		help
		A DVB-S tuner module. Say Y when you want to support this frontend.

		comment "DVB-T (terrestrial) frontends"
		depends on DVB_CORE

		@@ -216,6 +223,15 @@ config DVB_LGDT330X
		An ATSC 8VSB and QAM64/256 tuner module. Say Y when you want
		to support this frontend.

		comment "Tuners/PLL support"
		depends on DVB_CORE

		config DVB_TDA826X
		tristate "Philips TDA826X silicon tuner"
		depends on DVB_CORE
		default m if DVB_FE_CUSTOMISE
		help
		A DVB-S silicon tuner module. Say Y when you want to support this tuner.

		comment "Miscellaneous devices"
		depends on DVB_CORE

drivers/media/dvb/frontends/Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -33,3 +33,5 @@ obj-$(CONFIG_DVB_LGDT330X) += lgdt330x.o
		obj-$(CONFIG_DVB_CX24123) += cx24123.o
		obj-$(CONFIG_DVB_LNBP21) += lnbp21.o
		obj-$(CONFIG_DVB_ISL6421) += isl6421.o
		obj-$(CONFIG_DVB_TDA10086) += tda10086.o
		obj-$(CONFIG_DVB_TDA826X) += tda826x.o

drivers/media/dvb/frontends/tda10086.c

0 → 100644

+740 −0

Original line number	Diff line number	Diff line
		/*
		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/moduleparam.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;
		};

		static int debug = 1;
		#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",
		__FUNCTION__, 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", __FUNCTION__, 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;

		dprintk ("%s\n", __FUNCTION__);

		// 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, 0x64);
		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 (assumes 16Mhz XIN)
		tda10086_write_byte(state, 0x55, 0x2c); // misc PLL setup
		tda10086_write_byte(state, 0x3a, 0x0b); // M=12
		tda10086_write_byte(state, 0x3b, 0x01); // P=2
		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, 0x03); // NOTE: flydvb uses 0x0a and 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, 0x00); // all SEC off
		tda10086_write_byte(state, 0x34, (((1<<19) * (22000/1000)) / (SACLK/1000))); // } tone frequency
		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", __FUNCTION__);
		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;

		dprintk ("%s\n", __FUNCTION__);

		switch(tone) {
		case SEC_TONE_OFF:
		tda10086_write_byte(state, 0x36, 0x00);
		break;

		case SEC_TONE_ON:
		tda10086_write_byte(state, 0x36, 0x01);
		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;

		dprintk ("%s\n", __FUNCTION__);

		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 \| ((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);

		dprintk ("%s\n", __FUNCTION__);

		switch(minicmd) {
		case SEC_MINI_A:
		tda10086_write_byte(state, 0x36, 0x04);
		break;

		case SEC_MINI_B:
		tda10086_write_byte(state, 0x36, 0x06);
		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", __FUNCTION__, 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", __FUNCTION__, 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", __FUNCTION__, 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", __FUNCTION__);

		// 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", __FUNCTION__);

		// 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", __FUNCTION__);

		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;

		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", __FUNCTION__);

		_str = 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", __FUNCTION__);

		_snr = 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", __FUNCTION__);

		// 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", __FUNCTION__);

		// 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", __FUNCTION__);

		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", __FUNCTION__);

		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", __FUNCTION__);

		/* allocate memory for the internal state */
		state = kmalloc(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);

drivers/media/dvb/frontends/tda10086.h

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Original line number	Diff line number	Diff line
		/*
		Driver for Philips tda10086 DVBS Frontend

		(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.

		*/

		#ifndef TDA10086_H
		#define TDA10086_H

		#include <linux/dvb/frontend.h>
		#include <linux/firmware.h>

		struct tda10086_config
		{
		/* the demodulator's i2c address */
		u8 demod_address;

		/* does the "inversion" need inverted? */
		u8 invert;
		};

		extern struct dvb_frontend* tda10086_attach(const struct tda10086_config* config,
		struct i2c_adapter* i2c);

		#endif // TDA10086_H

drivers/media/dvb/frontends/tda826x.c

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