V4L/DVB (10799): Add support for ST STV6110 silicon tuner. (47220bc1) · Commits · jan.koester / Linux

drivers/media/dvb/frontends/Kconfig

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		@@ -83,6 +83,13 @@ config DVB_STV0299
		help
		A DVB-S tuner module. Say Y when you want to support this frontend.

		config DVB_STV6110
		tristate "ST STV6110 silicon tuner"
		depends on DVB_CORE && I2C
		default m if DVB_FE_CUSTOMISE
		help
		A DVB-S silicon tuner module. Say Y when you want to support this tuner.

		config DVB_TDA8083
		tristate "Philips TDA8083 based"
		depends on DVB_CORE && I2C

drivers/media/dvb/frontends/Makefile

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		@@ -64,4 +64,5 @@ obj-$(CONFIG_DVB_SI21XX) += si21xx.o
		obj-$(CONFIG_DVB_STV0288) += stv0288.o
		obj-$(CONFIG_DVB_STB6000) += stb6000.o
		obj-$(CONFIG_DVB_S921) += s921.o
		obj-$(CONFIG_DVB_STV6110) += stv6110.o

drivers/media/dvb/frontends/stv6110.c

0 → 100644

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		/*
		* stv6110.c
		*
		* Driver for ST STV6110 satellite tuner IC.
		*
		* Copyright (C) 2009 NetUP Inc.
		* Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
		*
		* 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/module.h>
		#include <linux/dvb/frontend.h>

		#include <linux/types.h>

		#include "stv6110.h"

		static int debug;

		struct stv6110_priv {
		int i2c_address;
		struct i2c_adapter *i2c;

		u32 mclk;
		u8 regs[8];
		};

		#define dprintk(args...) \
		do { \
		if (debug) \
		printk(KERN_DEBUG args); \
		} while (0)

		static s32 abssub(s32 a, s32 b)
		{
		if (a > b)
		return a - b;
		else
		return b - a;
		};

		static int stv6110_release(struct dvb_frontend *fe)
		{
		kfree(fe->tuner_priv);
		fe->tuner_priv = NULL;
		return 0;
		}

		static int stv6110_write_regs(struct dvb_frontend *fe, u8 buf[],
		int start, int len)
		{
		struct stv6110_priv *priv = fe->tuner_priv;
		int rc;
		u8 cmdbuf[len + 1];
		struct i2c_msg msg = {
		.addr = priv->i2c_address,
		.flags = 0,
		.buf = cmdbuf,
		.len = len + 1
		};

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

		if (start + len > 8)
		return -EINVAL;

		memcpy(&cmdbuf[1], buf, len);
		cmdbuf[0] = start;

		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1);

		rc = i2c_transfer(priv->i2c, &msg, 1);
		if (rc != 1)
		dprintk("%s: i2c error\n", __func__);

		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0);

		return 0;
		}

		static int stv6110_read_regs(struct dvb_frontend *fe, u8 regs[],
		int start, int len)
		{
		struct stv6110_priv *priv = fe->tuner_priv;
		int rc;
		u8 reg[] = { start };
		struct i2c_msg msg_wr = {
		.addr = priv->i2c_address,
		.flags = 0,
		.buf = reg,
		.len = 1,
		};

		struct i2c_msg msg_rd = {
		.addr = priv->i2c_address,
		.flags = I2C_M_RD,
		.buf = regs,
		.len = len,
		};
		/* write subaddr */
		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1);

		rc = i2c_transfer(priv->i2c, &msg_wr, 1);
		if (rc != 1)
		dprintk("%s: i2c error\n", __func__);

		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0);
		/* read registers */
		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1);

		rc = i2c_transfer(priv->i2c, &msg_rd, 1);
		if (rc != 1)
		dprintk("%s: i2c error\n", __func__);

		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0);

		memcpy(&priv->regs[start], regs, len);

		return 0;
		}

		static int stv6110_read_reg(struct dvb_frontend *fe, int start)
		{
		u8 buf[] = { 0 };
		stv6110_read_regs(fe, buf, start, 1);

		return buf[0];
		}

		static int stv6110_sleep(struct dvb_frontend *fe)
		{
		u8 reg[] = { 0 };
		stv6110_write_regs(fe, reg, 0, 1);

		return 0;
		}

		static u32 carrier_width(u32 symbol_rate, fe_rolloff_t rolloff)
		{
		u32 rlf;

		switch (rolloff) {
		case ROLLOFF_20:
		rlf = 20;
		break;
		case ROLLOFF_25:
		rlf = 25;
		break;
		default:
		rlf = 35;
		break;
		}

		return symbol_rate + ((symbol_rate * rlf) / 100);
		}

		static int stv6110_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
		{
		struct stv6110_priv *priv = fe->tuner_priv;
		u8 r8, ret = 0x04;
		int i;

		if ((bandwidth / 2) > 36000000) /BW/2 max=31+5=36 mhz for r8=31/
		r8 = 31;
		else if ((bandwidth / 2) < 5000000) /* BW/2 min=5Mhz for F=0 */
		r8 = 0;
		else /if 5 < BW/2 < 36/
		r8 = (bandwidth / 2) / 1000000 - 5;

		/* ctrl3, RCCLKOFF = 0 Activate the calibration Clock */
		/* ctrl3, CF = r8 Set the LPF value */
		priv->regs[RSTV6110_CTRL3] &= ~((1 << 6) \| 0x1f);
		priv->regs[RSTV6110_CTRL3] \|= (r8 & 0x1f);
		stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL3], RSTV6110_CTRL3, 1);
		/* stat1, CALRCSTRT = 1 Start LPF auto calibration*/
		priv->regs[RSTV6110_STAT1] \|= 0x02;
		stv6110_write_regs(fe, &priv->regs[RSTV6110_STAT1], RSTV6110_STAT1, 1);

		i = 0;
		/* Wait for CALRCSTRT == 0 */
		while ((i < 10) && (ret != 0)) {
		ret = ((stv6110_read_reg(fe, RSTV6110_STAT1)) & 0x02);
		mdelay(1); /* wait for LPF auto calibration */
		i++;
		}

		/* RCCLKOFF = 1 calibration done, desactivate the calibration Clock */
		priv->regs[RSTV6110_CTRL3] \|= (1 << 6);
		stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL3], RSTV6110_CTRL3, 1);
		return 0;
		}

		static int stv6110_init(struct dvb_frontend *fe)
		{
		struct stv6110_priv *priv = fe->tuner_priv;
		u8 buf0[] = { 0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e };

		memcpy(priv->regs, buf0, 8);
		/* K = (Reference / 1000000) - 16 */
		priv->regs[RSTV6110_CTRL1] &= ~(0x1f << 3);
		priv->regs[RSTV6110_CTRL1] \|=
		((((priv->mclk / 1000000) - 16) & 0x1f) << 3);

		stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL1], RSTV6110_CTRL1, 8);
		msleep(1);
		stv6110_set_bandwidth(fe, 72000000);

		return 0;
		}

		static int stv6110_get_frequency(struct dvb_frontend fe, u32 frequency)
		{
		struct stv6110_priv *priv = fe->tuner_priv;
		u32 nbsteps, divider, psd2, freq;
		u8 regs[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

		stv6110_read_regs(fe, regs, 0, 8);
		/N/
		divider = (priv->regs[RSTV6110_TUNING2] & 0x0f) << 8;
		divider += priv->regs[RSTV6110_TUNING1];

		/R/
		nbsteps = (priv->regs[RSTV6110_TUNING2] >> 6) & 3;
		/p/
		psd2 = (priv->regs[RSTV6110_TUNING2] >> 4) & 1;

		freq = divider * (priv->mclk / 1000);
		freq /= (1 << (nbsteps + psd2));
		freq /= 4;

		*frequency = freq;

		return 0;
		}

		static int stv6110_set_frequency(struct dvb_frontend *fe, u32 frequency)
		{
		struct stv6110_priv *priv = fe->tuner_priv;
		struct dtv_frontend_properties *c = &fe->dtv_property_cache;
		u8 ret = 0x04;
		u32 divider, ref, p, presc, i, result_freq, vco_freq;
		s32 p_calc, p_calc_opt = 1000, r_div, r_div_opt = 0, p_val;
		s32 srate; u8 gain;

		dprintk("%s, freq=%d kHz, mclk=%d Hz\n", __func__,
		frequency, priv->mclk);

		/* K = (Reference / 1000000) - 16 */
		priv->regs[RSTV6110_CTRL1] &= ~(0x1f << 3);
		priv->regs[RSTV6110_CTRL1] \|=
		((((priv->mclk / 1000000) - 16) & 0x1f) << 3);

		/* BB_GAIN = db/2 */
		if (fe->ops.set_property && fe->ops.get_property) {
		srate = c->symbol_rate;
		dprintk("%s: Get Frontend parameters: srate=%d\n",
		__func__, srate);
		} else
		srate = 15000000;

		if (srate >= 15000000)
		gain = 3; /* +6 dB */
		else if (srate >= 5000000)
		gain = 3; /* +6 dB */
		else
		gain = 3; /* +6 dB */

		priv->regs[RSTV6110_CTRL2] &= ~0x0f;
		priv->regs[RSTV6110_CTRL2] \|= (gain & 0x0f);

		if (frequency <= 1023000) {
		p = 1;
		presc = 0;
		} else if (frequency <= 1300000) {
		p = 1;
		presc = 1;
		} else if (frequency <= 2046000) {
		p = 0;
		presc = 0;
		} else {
		p = 0;
		presc = 1;
		}
		/* DIV4SEL = p*/
		priv->regs[RSTV6110_TUNING2] &= ~(1 << 4);
		priv->regs[RSTV6110_TUNING2] \|= (p << 4);

		/* PRESC32ON = presc */
		priv->regs[RSTV6110_TUNING2] &= ~(1 << 5);
		priv->regs[RSTV6110_TUNING2] \|= (presc << 5);

		p_val = (int)(1 << (p + 1)) * 10;/* P = 2 or P = 4 */
		for (r_div = 0; r_div <= 3; r_div++) {
		p_calc = (priv->mclk / 100000);
		p_calc /= (1 << (r_div + 1));
		if ((abssub(p_calc, p_val)) < (abssub(p_calc_opt, p_val)))
		r_div_opt = r_div;

		p_calc_opt = (priv->mclk / 100000);
		p_calc_opt /= (1 << (r_div_opt + 1));
		}

		ref = priv->mclk / ((1 << (r_div_opt + 1)) * (1 << (p + 1)));
		divider = (((frequency * 1000) + (ref >> 1)) / ref);

		/* RDIV = r_div_opt */
		priv->regs[RSTV6110_TUNING2] &= ~(3 << 6);
		priv->regs[RSTV6110_TUNING2] \|= (((r_div_opt) & 3) << 6);

		/* NDIV_MSB = MSB(divider) */
		priv->regs[RSTV6110_TUNING2] &= ~0x0f;
		priv->regs[RSTV6110_TUNING2] \|= (((divider) >> 8) & 0x0f);

		/* NDIV_LSB, LSB(divider) */
		priv->regs[RSTV6110_TUNING1] = (divider & 0xff);

		/* CALVCOSTRT = 1 VCO Auto Calibration */
		priv->regs[RSTV6110_STAT1] \|= 0x04;
		stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL1],
		RSTV6110_CTRL1, 8);

		i = 0;
		/* Wait for CALVCOSTRT == 0 */
		while ((i < 10) && (ret != 0)) {
		ret = ((stv6110_read_reg(fe, RSTV6110_STAT1)) & 0x04);
		msleep(1); /* wait for VCO auto calibration */
		i++;
		}

		ret = stv6110_read_reg(fe, RSTV6110_STAT1);
		stv6110_get_frequency(fe, &result_freq);

		vco_freq = divider * ((priv->mclk / 1000) / ((1 << (r_div_opt + 1))));
		dprintk("%s, stat1=%x, lo_freq=%d kHz, vco_frec=%d kHz\n", __func__,
		ret, result_freq, vco_freq);

		return 0;
		}

		static int stv6110_set_params(struct dvb_frontend *fe,
		struct dvb_frontend_parameters *params)
		{
		struct dtv_frontend_properties *c = &fe->dtv_property_cache;
		u32 bandwidth = carrier_width(c->symbol_rate, c->rolloff);

		stv6110_set_frequency(fe, c->frequency);
		stv6110_set_bandwidth(fe, bandwidth);

		return 0;
		}

		static int stv6110_get_bandwidth(struct dvb_frontend fe, u32 bandwidth)
		{
		struct stv6110_priv *priv = fe->tuner_priv;
		u8 r8 = 0;
		u8 regs[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
		stv6110_read_regs(fe, regs, 0, 8);

		/* CF */
		r8 = priv->regs[RSTV6110_CTRL3] & 0x1f;
		bandwidth = (r8 + 5) 2000000;/* x2 for ZIF tuner BW/2 = F+5 Mhz */

		return 0;
		}

		static struct dvb_tuner_ops stv6110_tuner_ops = {
		.info = {
		.name = "ST STV6110",
		.frequency_min = 950000,
		.frequency_max = 2150000,
		.frequency_step = 1000,
		},
		.init = stv6110_init,
		.release = stv6110_release,
		.sleep = stv6110_sleep,
		.set_params = stv6110_set_params,
		.get_frequency = stv6110_get_frequency,
		.set_frequency = stv6110_set_frequency,
		.get_bandwidth = stv6110_get_bandwidth,
		.set_bandwidth = stv6110_set_bandwidth,

		};

		struct dvb_frontend stv6110_attach(struct dvb_frontend fe,
		const struct stv6110_config *config,
		struct i2c_adapter *i2c)
		{
		struct stv6110_priv *priv = NULL;
		u8 reg0[] = { 0x00, 0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e };

		struct i2c_msg msg[] = {
		{
		.addr = config->i2c_address,
		.flags = 0,
		.buf = reg0,
		.len = 9
		}
		};
		int ret;

		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1);

		ret = i2c_transfer(i2c, msg, 1);

		if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0);

		if (ret != 1)
		return NULL;

		priv = kzalloc(sizeof(struct stv6110_priv), GFP_KERNEL);
		if (priv == NULL)
		return NULL;

		priv->i2c_address = config->i2c_address;
		priv->i2c = i2c;
		priv->mclk = config->mclk;

		memcpy(&priv->regs, &reg0[1], 8);

		memcpy(&fe->ops.tuner_ops, &stv6110_tuner_ops,
		sizeof(struct dvb_tuner_ops));
		fe->tuner_priv = priv;
		printk(KERN_INFO "STV6110 attached on addr=%x!\n", priv->i2c_address);

		return fe;
		}
		EXPORT_SYMBOL(stv6110_attach);

		module_param(debug, int, 0644);
		MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");

		MODULE_DESCRIPTION("ST STV6110 driver");
		MODULE_AUTHOR("Igor M. Liplianin");
		MODULE_LICENSE("GPL");

drivers/media/dvb/frontends/stv6110.h

0 → 100644

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Original line number	Diff line number	Diff line
		/*
		* stv6110.h
		*
		* Driver for ST STV6110 satellite tuner IC.
		*
		* Copyright (C) 2009 NetUP Inc.
		* Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
		*
		* 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 __DVB_STV6110_H__
		#define __DVB_STV6110_H__

		#include <linux/i2c.h>
		#include "dvb_frontend.h"

		/* registers */
		#define RSTV6110_CTRL1 0
		#define RSTV6110_CTRL2 1
		#define RSTV6110_TUNING1 2
		#define RSTV6110_TUNING2 3
		#define RSTV6110_CTRL3 4
		#define RSTV6110_STAT1 5
		#define RSTV6110_STAT2 6
		#define RSTV6110_STAT3 7

		struct stv6110_config {
		u8 i2c_address;
		u32 mclk;
		int iq_wiring;
		};

		#if defined(CONFIG_DVB_STV6110) \|\| (defined(CONFIG_DVB_STV6110_MODULE) \
		&& defined(MODULE))
		extern struct dvb_frontend stv6110_attach(struct dvb_frontend fe,
		const struct stv6110_config *config,
		struct i2c_adapter *i2c);
		#else
		static inline struct dvb_frontend stv6110_attach(struct dvb_frontend fe,
		const struct stv6110_config *config,
		struct i2c_adapter *i2c)
		{
		printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
		return NULL;
		}
		#endif

		#endif