path: root/drivers/media/video/tuner-core.c

/*
 *
 * i2c tv tuner chip device driver
 * core core, i.e. kernel interfaces, registering and so on
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/i2c.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/videodev.h>
#include <media/tuner.h>
#include <media/tuner-types.h>
#include <media/v4l2-common.h>
#include "tuner-driver.h"
#include "mt20xx.h"
#include "tda8290.h"
#include "tea5761.h"
#include "tea5767.h"
#include "tuner-xc2028.h"
#include "tuner-simple.h"
#include "tda9887.h"

#define UNSET (-1U)

/* standard i2c insmod options */
static unsigned short normal_i2c[] = {
#if defined(CONFIG_TUNER_TEA5761) || (defined(CONFIG_TUNER_TEA5761_MODULE) && defined(MODULE))
	0x10,
#endif
	0x42, 0x43, 0x4a, 0x4b,			/* tda8290 */
	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
	0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
	I2C_CLIENT_END
};

I2C_CLIENT_INSMOD;

/* insmod options used at init time => read/only */
static unsigned int addr = 0;
static unsigned int no_autodetect = 0;
static unsigned int show_i2c = 0;

/* insmod options used at runtime => read/write */
int tuner_debug = 0;

static unsigned int tv_range[2] = { 44, 958 };
static unsigned int radio_range[2] = { 65, 108 };

static char pal[] = "--";
static char secam[] = "--";
static char ntsc[] = "-";


module_param(addr, int, 0444);
module_param(no_autodetect, int, 0444);
module_param(show_i2c, int, 0444);
module_param_named(debug,tuner_debug, int, 0644);
module_param_string(pal, pal, sizeof(pal), 0644);
module_param_string(secam, secam, sizeof(secam), 0644);
module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
module_param_array(tv_range, int, NULL, 0644);
module_param_array(radio_range, int, NULL, 0644);

MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
MODULE_LICENSE("GPL");

static struct i2c_driver driver;
static struct i2c_client client_template;

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

static void fe_set_freq(struct dvb_frontend *fe, unsigned int freq)
{
	struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
	struct tuner *t = fe->analog_demod_priv;

	struct analog_parameters params = {
		.frequency = freq,
		.mode      = t->mode,
		.audmode   = t->audmode,
		.std       = t->std
	};

	if (NULL == fe_tuner_ops->set_analog_params) {
		tuner_warn("Tuner frontend module has no way to set freq\n");
		return;
	}
	fe_tuner_ops->set_analog_params(fe, &params);
}

static void fe_release(struct dvb_frontend *fe)
{
	if (fe->ops.tuner_ops.release)
		fe->ops.tuner_ops.release(fe);

	fe->ops.analog_demod_ops = NULL;

	/* DO NOT kfree(fe->analog_demod_priv)
	 *
	 * If we are in this function, analog_demod_priv contains a pointer
	 * to struct tuner *t.  This will be kfree'd in tuner_detach().
	 *
	 * Otherwise, fe->ops.analog_demod_ops->release will
	 * handle the cleanup for analog demodulator modules.
	 */
	fe->