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Commit 88b38bef authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
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[media] ITE IT913X silicon tuner driver 



It is tuner driver for tuner integrated to the ITE IT9135 and
IT9137 chips. I split it out from the current it913x-fe driver.

Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent e9e7a16d

drivers/media/tuners/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -241,4 +241,11 @@ config MEDIA_TUNER_TUA9001 
	default m if !MEDIA_SUBDRV_AUTOSELECT

	help

	  Infineon TUA 9001 silicon tuner driver.



config MEDIA_TUNER_IT913X

	tristate "ITE Tech IT913x silicon tuner"

	depends on MEDIA_SUPPORT && I2C

	default m if !MEDIA_SUBDRV_AUTOSELECT

	help

	  ITE Tech IT913x silicon tuner driver.

endmenu

drivers/media/tuners/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ obj-$(CONFIG_MEDIA_TUNER_TUA9001) += tua9001.o 
obj-$(CONFIG_MEDIA_TUNER_FC0011) += fc0011.o

obj-$(CONFIG_MEDIA_TUNER_FC0012) += fc0012.o

obj-$(CONFIG_MEDIA_TUNER_FC0013) += fc0013.o

obj-$(CONFIG_MEDIA_TUNER_IT913X) += it913x.o



ccflags-y += -I$(srctree)/drivers/media/dvb-core

ccflags-y += -I$(srctree)/drivers/media/dvb-frontends

drivers/media/tuners/it913x.c

0 → 100644
+584 −0
Original line number Diff line number Diff line 
/*

 * ITE Tech IT9137 silicon tuner driver

 *

 *  Copyright (C) 2011 Malcolm Priestley (tvboxspy@gmail.com)

 *  IT9137 Copyright (C) ITE Tech Inc.

 *

 *  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 "it913x_priv.h"



struct it913x_fe_state {

	struct dvb_frontend frontend;

	struct i2c_adapter *i2c_adap;

	struct ite_config *config;

	u8 i2c_addr;

	u32 frequency;

	fe_modulation_t constellation;

	fe_transmit_mode_t transmission_mode;

	u8 priority;

	u32 crystalFrequency;

	u32 adcFrequency;

	u8 tuner_type;

	struct adctable *table;

	fe_status_t it913x_status;

	u16 tun_xtal;

	u8 tun_fdiv;

	u8 tun_clk_mode;

	u32 tun_fn_min;

	u32 ucblocks;

};





static int it913x_read_reg(struct it913x_fe_state *state,

		u32 reg, u8 *data, u8 count)

{

	int ret;

	u8 b[3];

	struct i2c_msg msg[2] = {

		{ .addr = state->i2c_addr, .flags = 0,

			.buf = b, .len = sizeof(b) },

		{ .addr = state->i2c_addr, .flags = I2C_M_RD,

			.buf = data, .len = count }

	};

	b[0] = (u8)(reg >> 16) & 0xff;

	b[1] = (u8)(reg >> 8) & 0xff;

	b[2] = (u8) reg & 0xff;

	b[0] |= 0x80; /* All reads from demodulator */



	ret = i2c_transfer(state->i2c_adap, msg, 2);



	return ret;

}



static int it913x_read_reg_u8(struct it913x_fe_state *state, u32 reg)

{

	int ret;

	u8 b[1];

	ret = it913x_read_reg(state, reg, &b[0], sizeof(b));

	return (ret < 0) ? -ENODEV : b[0];

}



static int it913x_write(struct it913x_fe_state *state,

		u8 pro, u32 reg, u8 buf[], u8 count)

{

	u8 b[256];

	struct i2c_msg msg[1] = {

		{ .addr = state->i2c_addr, .flags = 0,

		  .buf = b, .len = 3 + count }

	};

	int ret;

	b[0] = (u8)(reg >> 16) & 0xff;

	b[1] = (u8)(reg >> 8) & 0xff;

	b[2] = (u8) reg & 0xff;

	memcpy(&b[3], buf, count);



	if (pro == PRO_DMOD)

		b[0] |= 0x80;



	ret = i2c_transfer(state->i2c_adap, msg, 1);



	if (ret < 0)

		return -EIO;



	return 0;

}



static int it913x_write_reg(struct it913x_fe_state *state,

		u8 pro, u32 reg, u32 data)

{

	int ret;

	u8 b[4];

	u8 s;



	b[0] = data >> 24;

	b[1] = (data >> 16) & 0xff;

	b[2] = (data >> 8) & 0xff;

	b[3] = data & 0xff;

	/* expand write as needed */

	if (data < 0x100)

		s = 3;

	else if (data < 0x1000)

		s = 2;

	else if (data < 0x100000)

		s = 1;

	else

		s = 0;



	ret = it913x_write(state, pro, reg, &b[s], sizeof(b) - s);



	return ret;

}



static int it913x_fe_script_loader(struct it913x_fe_state *state,

		struct it913xset *loadscript)

{

	int ret, i;

	if (loadscript == NULL)

		return -EINVAL;



	for (i = 0; i < 1000; ++i) {

		if (loadscript[i].pro == 0xff)

			break;

		ret = it913x_write(state, loadscript[i].pro,

			loadscript[i].address,

			loadscript[i].reg, loadscript[i].count);

		if (ret < 0)

			return -ENODEV;

	}

	return 0;

}



static int it913x_init_tuner(struct dvb_frontend *fe)

{

	struct it913x_fe_state *state = fe->tuner_priv;

	int ret, i, reg;

	u8 val, nv_val;

	u8 nv[] = {48, 32, 24, 16, 12, 8, 6, 4, 2};

	u8 b[2];



	reg = it913x_read_reg_u8(state, 0xec86);

	switch (reg) {

	case 0:

		state->tun_clk_mode = reg;

		state->tun_xtal = 2000;

		state->tun_fdiv = 3;

		val = 16;

		break;

	case -ENODEV:

		return -ENODEV;

	case 1:

	default:

		state->tun_clk_mode = reg;

		state->tun_xtal = 640;

		state->tun_fdiv = 1;

		val = 6;

		break;

	}



	reg = it913x_read_reg_u8(state, 0xed03);



	if (reg < 0)

		return -ENODEV;

	else if (reg < ARRAY_SIZE(nv))

		nv_val = nv[reg];

	else

		nv_val = 2;



	for (i = 0; i < 50; i++) {

		ret = it913x_read_reg(state, 0xed23, &b[0], sizeof(b));

		reg = (b[1] << 8) + b[0];

		if (reg > 0)

			break;

		if (ret < 0)

			return -ENODEV;

		udelay(2000);

	}

	state->tun_fn_min = state->tun_xtal * reg;

	state->tun_fn_min /= (state->tun_fdiv * nv_val);

	pr_debug("Tuner fn_min %d\n", state->tun_fn_min);



	if (state->config->chip_ver > 1)

		msleep(50);

	else {

		for (i = 0; i < 50; i++) {

			reg = it913x_read_reg_u8(state, 0xec82);

			if (reg > 0)

				break;

			if (reg < 0)

				return -ENODEV;

			udelay(2000);

		}

	}



	return it913x_write_reg(state, PRO_DMOD, 0xed81, val);

}



static int it9137_set_tuner(struct dvb_frontend *fe)

{

	struct it913x_fe_state *state = fe->tuner_priv;

	struct it913xset *set_tuner = set_it9137_template;

	struct dtv_frontend_properties *p = &fe->dtv_property_cache;

	u32 bandwidth = p->bandwidth_hz;

	u32 frequency_m = p->frequency;

	int ret, reg;

	u32 frequency = frequency_m / 1000;

	u32 freq, temp_f, tmp;

	u16 iqik_m_cal;

	u16 n_div;

	u8 n;

	u8 l_band;

	u8 lna_band;

	u8 bw;



	if (state->config->firmware_ver == 1)

		set_tuner = set_it9135_template;

	else

		set_tuner = set_it9137_template;



	pr_debug("Tuner Frequency %d Bandwidth %d\n", frequency, bandwidth);



	if (frequency >= 51000 && frequency <= 440000) {

		l_band = 0;

		lna_band = 0;

	} else if (frequency > 440000 && frequency <= 484000) {

		l_band = 1;

		lna_band = 1;

	} else if (frequency > 484000 && frequency <= 533000) {

		l_band = 1;

		lna_band = 2;

	} else if (frequency > 533000 && frequency <= 587000) {

		l_band = 1;

		lna_band = 3;

	} else if (frequency > 587000 && frequency <= 645000) {

		l_band = 1;

		lna_band = 4;

	} else if (frequency > 645000 && frequency <= 710000) {

		l_band = 1;

		lna_band = 5;

	} else if (frequency > 710000 && frequency <= 782000) {

		l_band = 1;

		lna_band = 6;

	} else if (frequency > 782000 && frequency <= 860000) {

		l_band = 1;

		lna_band = 7;

	} else if (frequency > 1450000 && frequency <= 1492000) {

		l_band = 1;

		lna_band = 0;

	} else if (frequency > 1660000 && frequency <= 1685000) {

		l_band = 1;

		lna_band = 1;

	} else

		return -EINVAL;

	set_tuner[0].reg[0] = lna_band;



	switch (bandwidth) {

	case 5000000:

		bw = 0;

		break;

	case 6000000:

		bw = 2;

		break;

	case 7000000:

		bw = 4;

		break;

	default:

	case 8000000:

		bw = 6;

		break;

	}



	set_tuner[1].reg[0] = bw;

	set_tuner[2].reg[0] = 0xa0 | (l_band << 3);



	if (frequency > 53000 && frequency <= 74000) {

		n_div = 48;

		n = 0;

	} else if (frequency > 74000 && frequency <= 111000) {

		n_div = 32;

		n = 1;

	} else if (frequency > 111000 && frequency <= 148000) {

		n_div = 24;

		n = 2;

	} else if (frequency > 148000 && frequency <= 222000) {

		n_div = 16;

		n = 3;

	} else if (frequency > 222000 && frequency <= 296000) {

		n_div = 12;

		n = 4;

	} else if (frequency > 296000 && frequency <= 445000) {

		n_div = 8;

		n = 5;

	} else if (frequency > 445000 && frequency <= state->tun_fn_min) {

		n_div = 6;

		n = 6;

	} else if (frequency > state->tun_fn_min && frequency <= 950000) {

		n_div = 4;

		n = 7;

	} else if (frequency > 1450000 && frequency <= 1680000) {

		n_div = 2;

		n = 0;

	} else

		return -EINVAL;



	reg = it913x_read_reg_u8(state, 0xed81);

	iqik_m_cal = (u16)reg * n_div;



	if (reg < 0x20) {

		if (state->tun_clk_mode == 0)

			iqik_m_cal = (iqik_m_cal * 9) >> 5;

		else

			iqik_m_cal >>= 1;

	} else {

		iqik_m_cal = 0x40 - iqik_m_cal;

		if (state->tun_clk_mode == 0)

			iqik_m_cal = ~((iqik_m_cal * 9) >> 5);

		else

			iqik_m_cal = ~(iqik_m_cal >> 1);

	}



	temp_f = frequency * (u32)n_div * (u32)state->tun_fdiv;

	freq = temp_f / state->tun_xtal;

	tmp = freq * state->tun_xtal;



	if ((temp_f - tmp) >= (state->tun_xtal >> 1))

		freq++;



	freq += (u32) n << 13;

	/* Frequency OMEGA_IQIK_M_CAL_MID*/

	temp_f = freq + (u32)iqik_m_cal;



	set_tuner[3].reg[0] =  temp_f & 0xff;

	set_tuner[4].reg[0] =  (temp_f >> 8) & 0xff;



	pr_debug("High Frequency = %04x\n", temp_f);



	/* Lower frequency */

	set_tuner[5].reg[0] =  freq & 0xff;

	set_tuner[6].reg[0] =  (freq >> 8) & 0xff;



	pr_debug("low Frequency = %04x\n", freq);



	ret = it913x_fe_script_loader(state, set_tuner);



	return (ret < 0) ? -ENODEV : 0;

}



static int it913x_fe_suspend(struct it913x_fe_state *state)

{

	int ret = 0;

#if 0

	int ret, i;

	u8 b;



	ret = it913x_write_reg(state, PRO_DMOD, SUSPEND_FLAG, 0x1);



	ret |= it913x_write_reg(state, PRO_DMOD, TRIGGER_OFSM, 0x0);



	for (i = 0; i < 128; i++) {

		ret = it913x_read_reg(state, SUSPEND_FLAG, &b, 1);

		if (ret < 0)

			return -ENODEV;

		if (b == 0)

			break;



	}



	ret |= it913x_write_reg(state, PRO_DMOD, AFE_MEM0, 0x8);

	/* Turn LED off */

	ret |= it913x_write_reg(state, PRO_LINK, GPIOH3_O, 0x0);

#endif

	ret |= it913x_fe_script_loader(state, it9137_tuner_off);



	return (ret < 0) ? -ENODEV : 0;

}



/* Power sequence */

/* Power Up	Tuner on -> Frontend suspend off -> Tuner clk on */

/* Power Down	Frontend suspend on -> Tuner clk off -> Tuner off */



static int it913x_fe_sleep(struct dvb_frontend *fe)

{

	struct it913x_fe_state *state = fe->tuner_priv;

	return it913x_fe_suspend(state);

}



static int it913x_fe_start(struct dvb_frontend *fe)

{

	struct it913x_fe_state *state = fe->tuner_priv;

	struct it913xset *set_lna;

//	struct it913xset *set_mode;

	int ret;

//	u8 adf = (state->config->adf & 0xf);

//	u32 adc, xtal;

//	u8 b[4];



	if (state->config->chip_ver == 1)

		ret = it913x_init_tuner(fe);



#if 0

	pr_info("ADF table value	:%02x\n", adf);



	if (adf < 10) {

		state->crystalFrequency = fe_clockTable[adf].xtal ;

		state->table = fe_clockTable[adf].table;

		state->adcFrequency = state->table->adcFrequency;



		adc = compute_div(state->adcFrequency, 1000000ul, 19ul);

		xtal = compute_div(state->crystalFrequency, 1000000ul, 19ul);



	} else

		return -EINVAL;



	/* Set LED indicator on GPIOH3 */

	ret = it913x_write_reg(state, PRO_LINK, GPIOH3_EN, 0x1);

	ret |= it913x_write_reg(state, PRO_LINK, GPIOH3_ON, 0x1);

	ret |= it913x_write_reg(state, PRO_LINK, GPIOH3_O, 0x1);



	ret |= it913x_write_reg(state, PRO_LINK, 0xf641, state->tuner_type);

	ret |= it913x_write_reg(state, PRO_DMOD, 0xf5ca, 0x01);

	ret |= it913x_write_reg(state, PRO_DMOD, 0xf715, 0x01);



	b[0] = xtal & 0xff;

	b[1] = (xtal >> 8) & 0xff;

	b[2] = (xtal >> 16) & 0xff;

	b[3] = (xtal >> 24);

	ret |= it913x_write(state, PRO_DMOD, XTAL_CLK, b , 4);



	b[0] = adc & 0xff;

	b[1] = (adc >> 8) & 0xff;

	b[2] = (adc >> 16) & 0xff;

	ret |= it913x_write(state, PRO_DMOD, ADC_FREQ, b, 3);



	if (state->config->adc_x2)

		ret |= it913x_write_reg(state, PRO_DMOD, ADC_X_2, 0x01);

	b[0] = 0;

	b[1] = 0;

	b[2] = 0;

	ret |= it913x_write(state, PRO_DMOD, 0x0029, b, 3);



	pr_info("Crystal Frequency :%d Adc Frequency :%d ADC X2: %02x\n",

		state->crystalFrequency, state->adcFrequency,

			state->config->adc_x2);

	pr_debug("Xtal value :%04x Adc value :%04x\n", xtal, adc);



	if (ret < 0)

		return -ENODEV;

#endif



	/* v1 or v2 tuner script */

	if (state->config->chip_ver > 1)

		ret = it913x_fe_script_loader(state, it9135_v2);

	else

		ret = it913x_fe_script_loader(state, it9135_v1);

	if (ret < 0)

		return ret;



	/* LNA Scripts */

	switch (state->tuner_type) {

	case IT9135_51:

		set_lna = it9135_51;

		break;

	case IT9135_52:

		set_lna = it9135_52;

		break;

	case IT9135_60:

		set_lna = it9135_60;

		break;

	case IT9135_61:

		set_lna = it9135_61;

		break;

	case IT9135_62:

		set_lna = it9135_62;

		break;

	case IT9135_38:

	default:

		set_lna = it9135_38;

	}

	pr_info("Tuner LNA type :%02x\n", state->tuner_type);



	ret = it913x_fe_script_loader(state, set_lna);

	if (ret < 0)

		return ret;



	if (state->config->chip_ver == 2) {

		ret = it913x_write_reg(state, PRO_DMOD, TRIGGER_OFSM, 0x1);

		ret |= it913x_write_reg(state, PRO_LINK, PADODPU, 0x0);

		ret |= it913x_write_reg(state, PRO_LINK, AGC_O_D, 0x0);

		ret |= it913x_init_tuner(fe);

	}

	if (ret < 0)

		return -ENODEV;



	/* Always solo frontend */

//	set_mode = set_solo_fe;

//	ret |= it913x_fe_script_loader(state, set_mode);



	ret |= it913x_fe_suspend(state);

	return (ret < 0) ? -ENODEV : 0;

}



static int it913x_release(struct dvb_frontend *fe)

{

	kfree(fe->tuner_priv);

	return 0;

}



static const struct dvb_tuner_ops it913x_tuner_ops = {

	.info = {

		.name           = "ITE Tech IT913X",

		.frequency_min  = 174000000,

		.frequency_max  = 862000000,

	},



	.release = it913x_release,



	.init = it913x_init_tuner,

	.sleep = it913x_fe_sleep,

	.set_params = it9137_set_tuner,

};



struct dvb_frontend *it913x_attach(struct dvb_frontend *fe,

	struct i2c_adapter *i2c_adap, u8 i2c_addr, struct ite_config *config)

{

	struct it913x_fe_state *state = NULL;

	int ret;



	/* allocate memory for the internal state */

	state = kzalloc(sizeof(struct it913x_fe_state), GFP_KERNEL);

	if (state == NULL)

		return NULL;

	if (config == NULL)

		goto error;



	state->i2c_adap = i2c_adap;

	state->i2c_addr = i2c_addr;

	state->config = config;



	switch (state->config->tuner_id_0) {

	case IT9135_51:

	case IT9135_52:

	case IT9135_60:

	case IT9135_61:

	case IT9135_62:

		state->tuner_type = state->config->tuner_id_0;

		break;

	default:

	case IT9135_38:

		state->tuner_type = IT9135_38;

	}



	fe->tuner_priv = state;

	memcpy(&fe->ops.tuner_ops, &it913x_tuner_ops,

			sizeof(struct dvb_tuner_ops));



	ret = it913x_fe_start(fe);

	if (ret < 0)

		goto error;



	pr_info("%s: ITE Tech IT913X attached\n", KBUILD_MODNAME);



	return fe;

error:

	kfree(state);

	return NULL;

}

EXPORT_SYMBOL(it913x_attach);



MODULE_DESCRIPTION("ITE Tech IT913X silicon tuner driver");

MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");

MODULE_LICENSE("GPL");

drivers/media/tuners/it913x.h

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Original line number Diff line number Diff line 
/*

 * ITE Tech IT9137 silicon tuner driver

 *

 *  Copyright (C) 2011 Malcolm Priestley (tvboxspy@gmail.com)

 *  IT9137 Copyright (C) ITE Tech Inc.

 *

 *  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 IT913X_H

#define IT913X_H



#include "dvb_frontend.h"



struct ite_config {

	u8 chip_ver;

	u16 chip_type;

	u32 firmware;

	u8 firmware_ver;

	u8 adc_x2;

	u8 tuner_id_0;

	u8 tuner_id_1;

	u8 dual_mode;

	u8 adf;

	/* option to read SIGNAL_LEVEL */

	u8 read_slevel;

};



#if defined(CONFIG_MEDIA_TUNER_IT913X) || \

	(defined(CONFIG_MEDIA_TUNER_IT913X_MODULE) && defined(MODULE))

extern struct dvb_frontend *it913x_attach(struct dvb_frontend *fe,

	struct i2c_adapter *i2c_adap, u8 i2c_addr, struct ite_config *config);

#else

static inline struct dvb_frontend *it913x_attach(struct dvb_frontend *fe,

	struct i2c_adapter *i2c_adap, u8 i2c_addr, struct ite_config *config)

{

	pr_warn("%s: driver disabled by Kconfig\n", __func__);

	return NULL;

}

#endif



#endif

drivers/media/tuners/it913x_priv.h

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