[media] fc001x: tuner driver for FC0012, version 0.5 (ef89ec7e) · Commits · e / devices / android_kernel_teracube_emerald

drivers/media/common/tuners/Kconfig

+7 −0

Original line number	Diff line number	Diff line
		@@ -211,6 +211,13 @@ config MEDIA_TUNER_FC0011
		help
		Fitipower FC0011 silicon tuner driver.

		config MEDIA_TUNER_FC0012
		tristate "Fitipower FC0012 silicon tuner"
		depends on VIDEO_MEDIA && I2C
		default m if MEDIA_TUNER_CUSTOMISE
		help
		Fitipower FC0012 silicon tuner driver.

		config MEDIA_TUNER_TDA18212
		tristate "NXP TDA18212 silicon tuner"
		depends on VIDEO_MEDIA && I2C

drivers/media/common/tuners/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@ obj-$(CONFIG_MEDIA_TUNER_TDA18218) += tda18218.o
		obj-$(CONFIG_MEDIA_TUNER_TDA18212) += tda18212.o
		obj-$(CONFIG_MEDIA_TUNER_TUA9001) += tua9001.o
		obj-$(CONFIG_MEDIA_TUNER_FC0011) += fc0011.o
		obj-$(CONFIG_MEDIA_TUNER_FC0012) += fc0012.o

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

drivers/media/common/tuners/fc0012-priv.h

0 → 100644

+43 −0

Original line number	Diff line number	Diff line
		/*
		* Fitipower FC0012 tuner driver - private includes
		*
		* Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@gmx.net>
		*
		* 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 _FC0012_PRIV_H_
		#define _FC0012_PRIV_H_

		#define LOG_PREFIX "fc0012"

		#undef err
		#define err(f, arg...) printk(KERN_ERR LOG_PREFIX": " f "\n" , ## arg)
		#undef info
		#define info(f, arg...) printk(KERN_INFO LOG_PREFIX": " f "\n" , ## arg)
		#undef warn
		#define warn(f, arg...) printk(KERN_WARNING LOG_PREFIX": " f "\n" , ## arg)

		struct fc0012_priv {
		struct i2c_adapter *i2c;
		u8 addr;
		u8 dual_master;
		u8 xtal_freq;

		u32 frequency;
		u32 bandwidth;
		};

		#endif

drivers/media/common/tuners/fc0012.c

0 → 100644

+397 −0

Original line number	Diff line number	Diff line
		/*
		* Fitipower FC0012 tuner driver
		*
		* Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@gmx.net>
		*
		* 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 "fc0012.h"
		#include "fc0012-priv.h"

		static int fc0012_writereg(struct fc0012_priv *priv, u8 reg, u8 val)
		{
		u8 buf[2] = {reg, val};
		struct i2c_msg msg = {
		.addr = priv->addr, .flags = 0, .buf = buf, .len = 2
		};

		if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
		err("I2C write reg failed, reg: %02x, val: %02x", reg, val);
		return -EREMOTEIO;
		}
		return 0;
		}

		static int fc0012_readreg(struct fc0012_priv priv, u8 reg, u8 val)
		{
		struct i2c_msg msg[2] = {
		{ .addr = priv->addr, .flags = 0, .buf = &reg, .len = 1 },
		{ .addr = priv->addr, .flags = I2C_M_RD, .buf = val, .len = 1 },
		};

		if (i2c_transfer(priv->i2c, msg, 2) != 2) {
		err("I2C read reg failed, reg: %02x", reg);
		return -EREMOTEIO;
		}
		return 0;
		}

		static int fc0012_release(struct dvb_frontend *fe)
		{
		kfree(fe->tuner_priv);
		fe->tuner_priv = NULL;
		return 0;
		}

		static int fc0012_init(struct dvb_frontend *fe)
		{
		struct fc0012_priv *priv = fe->tuner_priv;
		int i, ret = 0;
		unsigned char reg[] = {
		0x00, /* dummy reg. 0 */
		0x05, /* reg. 0x01 */
		0x10, /* reg. 0x02 */
		0x00, /* reg. 0x03 */
		0x00, /* reg. 0x04 */
		0x0f, /* reg. 0x05: may also be 0x0a */
		0x00, /* reg. 0x06: divider 2, VCO slow */
		0x00, /* reg. 0x07: may also be 0x0f */
		0xff, /* reg. 0x08: AGC Clock divide by 256, AGC gain 1/256,
		Loop Bw 1/8 */
		0x6e, /* reg. 0x09: Disable LoopThrough, Enable LoopThrough: 0x6f */
		0xb8, /* reg. 0x0a: Disable LO Test Buffer */
		0x82, /* reg. 0x0b: Output Clock is same as clock frequency,
		may also be 0x83 */
		0xfc, /* reg. 0x0c: depending on AGC Up-Down mode, may need 0xf8 */
		0x02, /* reg. 0x0d: AGC Not Forcing & LNA Forcing, 0x02 for DVB-T */
		0x00, /* reg. 0x0e */
		0x00, /* reg. 0x0f */
		0x00, /* reg. 0x10: may also be 0x0d */
		0x00, /* reg. 0x11 */
		0x1f, /* reg. 0x12: Set to maximum gain */
		0x08, /* reg. 0x13: Set to Middle Gain: 0x08,
		Low Gain: 0x00, High Gain: 0x10, enable IX2: 0x80 */
		0x00, /* reg. 0x14 */
		0x04, /* reg. 0x15: Enable LNA COMPS */
		};

		switch (priv->xtal_freq) {
		case FC_XTAL_27_MHZ:
		case FC_XTAL_28_8_MHZ:
		reg[0x07] \|= 0x20;
		break;
		case FC_XTAL_36_MHZ:
		default:
		break;
		}

		if (priv->dual_master)
		reg[0x0c] \|= 0x02;

		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */

		for (i = 1; i < sizeof(reg); i++) {
		ret = fc0012_writereg(priv, i, reg[i]);
		if (ret)
		break;
		}

		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */

		if (ret)
		err("fc0012_writereg failed: %d", ret);

		return ret;
		}

		static int fc0012_sleep(struct dvb_frontend *fe)
		{
		/* nothing to do here */
		return 0;
		}

		static int fc0012_set_params(struct dvb_frontend *fe)
		{
		struct fc0012_priv *priv = fe->tuner_priv;
		int i, ret = 0;
		struct dtv_frontend_properties *p = &fe->dtv_property_cache;
		u32 freq = p->frequency / 1000;
		u32 delsys = p->delivery_system;
		unsigned char reg[7], am, pm, multi, tmp;
		unsigned long f_vco;
		unsigned short xtal_freq_khz_2, xin, xdiv;
		int vco_select = false;

		if (fe->callback) {
		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
		FC_FE_CALLBACK_VHF_ENABLE, (freq > 300000 ? 0 : 1));
		if (ret)
		goto exit;
		}

		switch (priv->xtal_freq) {
		case FC_XTAL_27_MHZ:
		xtal_freq_khz_2 = 27000 / 2;
		break;
		case FC_XTAL_36_MHZ:
		xtal_freq_khz_2 = 36000 / 2;
		break;
		case FC_XTAL_28_8_MHZ:
		default:
		xtal_freq_khz_2 = 28800 / 2;
		break;
		}

		/* select frequency divider and the frequency of VCO */
		if (freq < 37084) { /* freq * 96 < 3560000 */
		multi = 96;
		reg[5] = 0x82;
		reg[6] = 0x00;
		} else if (freq < 55625) { /* freq * 64 < 3560000 */
		multi = 64;
		reg[5] = 0x82;
		reg[6] = 0x02;
		} else if (freq < 74167) { /* freq * 48 < 3560000 */
		multi = 48;
		reg[5] = 0x42;
		reg[6] = 0x00;
		} else if (freq < 111250) { /* freq * 32 < 3560000 */
		multi = 32;
		reg[5] = 0x42;
		reg[6] = 0x02;
		} else if (freq < 148334) { /* freq * 24 < 3560000 */
		multi = 24;
		reg[5] = 0x22;
		reg[6] = 0x00;
		} else if (freq < 222500) { /* freq * 16 < 3560000 */
		multi = 16;
		reg[5] = 0x22;
		reg[6] = 0x02;
		} else if (freq < 296667) { /* freq * 12 < 3560000 */
		multi = 12;
		reg[5] = 0x12;
		reg[6] = 0x00;
		} else if (freq < 445000) { /* freq * 8 < 3560000 */
		multi = 8;
		reg[5] = 0x12;
		reg[6] = 0x02;
		} else if (freq < 593334) { /* freq * 6 < 3560000 */
		multi = 6;
		reg[5] = 0x0a;
		reg[6] = 0x00;
		} else {
		multi = 4;
		reg[5] = 0x0a;
		reg[6] = 0x02;
		}

		f_vco = freq * multi;

		if (f_vco >= 3060000) {
		reg[6] \|= 0x08;
		vco_select = true;
		}

		if (freq >= 45000) {
		/* From divided value (XDIV) determined the FA and FP value */
		xdiv = (unsigned short)(f_vco / xtal_freq_khz_2);
		if ((f_vco - xdiv * xtal_freq_khz_2) >= (xtal_freq_khz_2 / 2))
		xdiv++;

		pm = (unsigned char)(xdiv / 8);
		am = (unsigned char)(xdiv - (8 * pm));

		if (am < 2) {
		reg[1] = am + 8;
		reg[2] = pm - 1;
		} else {
		reg[1] = am;
		reg[2] = pm;
		}
		} else {
		/* fix for frequency less than 45 MHz */
		reg[1] = 0x06;
		reg[2] = 0x11;
		}

		/* fix clock out */
		reg[6] \|= 0x20;

		/* From VCO frequency determines the XIN ( fractional part of Delta
		Sigma PLL) and divided value (XDIV) */
		xin = (unsigned short)(f_vco - (f_vco / xtal_freq_khz_2) * xtal_freq_khz_2);
		xin = (xin << 15) / xtal_freq_khz_2;
		if (xin >= 16384)
		xin += 32768;

		reg[3] = xin >> 8; /* xin with 9 bit resolution */
		reg[4] = xin & 0xff;

		if (delsys == SYS_DVBT) {
		reg[6] &= 0x3f; /* bits 6 and 7 describe the bandwidth */
		switch (p->bandwidth_hz) {
		case 6000000:
		reg[6] \|= 0x80;
		break;
		case 7000000:
		reg[6] \|= 0x40;
		break;
		case 8000000:
		default:
		break;
		}
		} else {
		err("%s: modulation type not supported!", __func__);
		return -EINVAL;
		}

		/* modified for Realtek demod */
		reg[5] \|= 0x07;

		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */

		for (i = 1; i <= 6; i++) {
		ret = fc0012_writereg(priv, i, reg[i]);
		if (ret)
		goto exit;
		}

		/* VCO Calibration */
		ret = fc0012_writereg(priv, 0x0e, 0x80);
		if (!ret)
		ret = fc0012_writereg(priv, 0x0e, 0x00);

		/* VCO Re-Calibration if needed */
		if (!ret)
		ret = fc0012_writereg(priv, 0x0e, 0x00);

		if (!ret) {
		msleep(10);
		ret = fc0012_readreg(priv, 0x0e, &tmp);
		}
		if (ret)
		goto exit;

		/* vco selection */
		tmp &= 0x3f;

		if (vco_select) {
		if (tmp > 0x3c) {
		reg[6] &= ~0x08;
		ret = fc0012_writereg(priv, 0x06, reg[6]);
		if (!ret)
		ret = fc0012_writereg(priv, 0x0e, 0x80);
		if (!ret)
		ret = fc0012_writereg(priv, 0x0e, 0x00);
		}
		} else {
		if (tmp < 0x02) {
		reg[6] \|= 0x08;
		ret = fc0012_writereg(priv, 0x06, reg[6]);
		if (!ret)
		ret = fc0012_writereg(priv, 0x0e, 0x80);
		if (!ret)
		ret = fc0012_writereg(priv, 0x0e, 0x00);
		}
		}

		priv->frequency = p->frequency;
		priv->bandwidth = p->bandwidth_hz;

		exit:
		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
		if (ret)
		warn("%s: failed: %d", __func__, ret);
		return ret;
		}

		static int fc0012_get_frequency(struct dvb_frontend fe, u32 frequency)
		{
		struct fc0012_priv *priv = fe->tuner_priv;
		*frequency = priv->frequency;
		return 0;
		}

		static int fc0012_get_if_frequency(struct dvb_frontend fe, u32 frequency)
		{
		/* CHECK: always ? */
		*frequency = 0;
		return 0;
		}

		static int fc0012_get_bandwidth(struct dvb_frontend fe, u32 bandwidth)
		{
		struct fc0012_priv *priv = fe->tuner_priv;
		*bandwidth = priv->bandwidth;
		return 0;
		}


		static const struct dvb_tuner_ops fc0012_tuner_ops = {
		.info = {
		.name = "Fitipower FC0012",

		.frequency_min = 37000000, /* estimate */
		.frequency_max = 862000000, /* estimate */
		.frequency_step = 0,
		},

		.release = fc0012_release,

		.init = fc0012_init,
		.sleep = fc0012_sleep,

		.set_params = fc0012_set_params,

		.get_frequency = fc0012_get_frequency,
		.get_if_frequency = fc0012_get_if_frequency,
		.get_bandwidth = fc0012_get_bandwidth,
		};

		struct dvb_frontend fc0012_attach(struct dvb_frontend fe,
		struct i2c_adapter *i2c, u8 i2c_address, int dual_master,
		enum fc001x_xtal_freq xtal_freq)
		{
		struct fc0012_priv *priv = NULL;

		priv = kzalloc(sizeof(struct fc0012_priv), GFP_KERNEL);
		if (priv == NULL)
		return NULL;

		priv->i2c = i2c;
		priv->dual_master = dual_master;
		priv->addr = i2c_address;
		priv->xtal_freq = xtal_freq;

		info("Fitipower FC0012 successfully attached.");

		fe->tuner_priv = priv;

		memcpy(&fe->ops.tuner_ops, &fc0012_tuner_ops,
		sizeof(struct dvb_tuner_ops));

		return fe;
		}
		EXPORT_SYMBOL(fc0012_attach);

		MODULE_DESCRIPTION("Fitipower FC0012 silicon tuner driver");
		MODULE_AUTHOR("Hans-Frieder Vogt <hfvogt@gmx.net>");
		MODULE_LICENSE("GPL");
		MODULE_VERSION("0.5");

drivers/media/common/tuners/fc0012.h

0 → 100644

+44 −0

Original line number	Diff line number	Diff line
		/*
		* Fitipower FC0012 tuner driver - include
		*
		* Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@gmx.net>
		*
		* 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 _FC0012_H_
		#define _FC0012_H_

		#include "dvb_frontend.h"
		#include "fc001x-common.h"

		#if defined(CONFIG_MEDIA_TUNER_FC0012) \|\| \
		(defined(CONFIG_MEDIA_TUNER_FC0012_MODULE) && defined(MODULE))
		extern struct dvb_frontend fc0012_attach(struct dvb_frontend fe,
		struct i2c_adapter *i2c,
		u8 i2c_address, int dual_master,
		enum fc001x_xtal_freq xtal_freq);
		#else
		static inline struct dvb_frontend fc0012_attach(struct dvb_frontend fe,
		struct i2c_adapter *i2c,
		u8 i2c_address, int dual_master,
		enum fc001x_xtal_freq xtal_freq)
		{
		printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
		return NULL;
		}
		#endif

		#endif