path: root/drivers/media/common/tuners/tda827x.c

/*
 *
 * (c) 2005 Hartmut Hackmann
 * (c) 2007 Michael Krufky
 *
 *  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/slab.h>
#include <asm/types.h>
#include <linux/dvb/frontend.h>
#include <linux/videodev2.h>

#include "tda827x.h"

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

#define dprintk(args...) \
	do {					    \
		if (debug) printk(KERN_DEBUG "tda827x: " args); \
	} while (0)

struct tda827x_priv {
	int i2c_addr;
	struct i2c_adapter *i2c_adap;
	struct tda827x_config *cfg;

	unsigned int sgIF;
	unsigned char lpsel;

	u32 frequency;
	u32 bandwidth;
};

static void tda827x_set_std(struct dvb_frontend *fe,
			    struct analog_parameters *params)
{
	struct tda827x_priv *priv = fe->tuner_priv;
	char *mode;

	priv->lpsel = 0;
	if (params->std & V4L2_STD_MN) {
		priv->sgIF = 92;
		priv->lpsel = 1;
		mode = "MN";
	} else if (params->std & V4L2_STD_B) {
		priv->sgIF = 108;
		mode = "B";
	} else if (params->std & V4L2_STD_GH) {
		priv->sgIF = 124;
		mode = "GH";
	} else if (params->std & V4L2_STD_PAL_I) {
		priv->sgIF = 124;
		mode = "I";
	} else if (params->std & V4L2_STD_DK) {
		priv->sgIF = 124;
		mode = "DK";
	} else if (params->std & V4L2_STD_SECAM_L) {
		priv->sgIF = 124;
		mode = "L";
	} else if (params->std & V4L2_STD_SECAM_LC) {
		priv->sgIF = 20;
		mode = "LC";
	} else {
		priv->sgIF = 124;
		mode = "xx";
	}

	if (params->mode == V4L2_TUNER_RADIO) {
		priv->sgIF = 88; /* if frequency is 5.5 MHz */
		dprintk("setting tda827x to radio FM\n");
	} else
		dprintk("setting tda827x to system %s\n", mode);
}


/* ------------------------------------------------------------------ */

struct tda827x_data {
	u32 lomax;
	u8  spd;
	u8  bs;
	u8  bp;
	u8  cp;
	u8  gc3;
	u8 div1p5;
};

static const struct tda827x_data tda827x_table[] = {
	{ .lomax =  62000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
	{ .lomax =  66000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
	{ .lomax =  76000000, .spd = 3, .bs = 1, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
	{ .lomax =  84000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
	{ .lomax =  93000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
	{ .lomax =  98000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
	{ .lomax = 109000000, .spd = 3, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
	{ .lomax = 123000000, .spd = 2, .bs = 2,