tuner-core.c

linux-2.6.15.6

		}
	}

	/* Initializes only the first adapter found */
	if (default_mode_mask != T_UNINITIALIZED) {
		tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
		t->mode_mask = default_mode_mask;
		t->freq = 400 * 16; /* Sets freq to VHF High */
		default_mode_mask = T_UNINITIALIZED;
	}

	/* Should be just before return */
register_client:
	tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
	i2c_attach_client (&t->i2c);
	set_type (&t->i2c,t->type, t->mode_mask);
	return 0;
}

static int tuner_probe(struct i2c_adapter *adap)
{
	if (0 != addr) {
		normal_i2c[0] = addr;
		normal_i2c[1] = I2C_CLIENT_END;
	}

	default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;

	if (adap->class & I2C_CLASS_TV_ANALOG)
		return i2c_probe(adap, &addr_data, tuner_attach);
	return 0;
}

static int tuner_detach(struct i2c_client *client)
{
	struct tuner *t = i2c_get_clientdata(client);
	int err;

	err = i2c_detach_client(&t->i2c);
	if (err) {
		tuner_warn
		    ("Client deregistration failed, client not detached.\n");
		return err;
	}

	kfree(t);
	return 0;
}

/*
 * Switch tuner to other mode. If tuner support both tv and radio,
 * set another frequency to some value (This is needed for some pal
 * tuners to avoid locking). Otherwise, just put second tuner in
 * standby mode.
 */

static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
{
	if (mode == t->mode)
		return 0;

	t->mode = mode;

	if (check_mode(t, cmd) == EINVAL) {
		t->mode = T_STANDBY;
		if (t->standby)
			t->standby (client);
		return EINVAL;
	}
	return 0;
}

#define switch_v4l2()	if (!t->using_v4l2) \
			    tuner_dbg("switching to v4l2\n"); \
			t->using_v4l2 = 1;

static inline int check_v4l2(struct tuner *t)
{
	if (t->using_v4l2) {
		tuner_dbg ("ignore v4l1 call\n");
		return EINVAL;
	}
	return 0;
}

static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
	struct tuner *t = i2c_get_clientdata(client);
	unsigned int *iarg = (int *)arg;

	switch (cmd) {
	/* --- configuration --- */
	case TUNER_SET_TYPE_ADDR:
		tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
				((struct tuner_setup *)arg)->type,
				((struct tuner_setup *)arg)->addr,
				((struct tuner_setup *)arg)->mode_mask);

		set_addr(client, (struct tuner_setup *)arg);
		break;
	case AUDC_SET_RADIO:
		set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO");
		break;
	case TUNER_SET_STANDBY:
		{
			if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
				return 0;
			if (t->standby)
				t->standby (client);
			break;
		}
	case AUDC_CONFIG_PINNACLE:
		switch (*iarg) {
		case 2:
			tuner_dbg("pinnacle pal\n");
			t->radio_if2 = 33300 * 1000;
			break;
		case 3:
			tuner_dbg("pinnacle ntsc\n");
			t->radio_if2 = 41300 * 1000;
			break;
		}
		break;
	case VIDIOCSAUDIO:
		if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
			return 0;
		if (check_v4l2(t) == EINVAL)
			return 0;

		/* Should be implemented, since bttv calls it */
		tuner_dbg("VIDIOCSAUDIO not implemented.\n");

		break;
	case MSP_SET_MATRIX:
	case TDA9887_SET_CONFIG:
		break;
	/* --- v4l ioctls --- */
	/* take care: bttv does userspace copying, we'll get a
	   kernel pointer here... */
	case VIDIOCSCHAN:
		{
			static const v4l2_std_id map[] = {
				[VIDEO_MODE_PAL] = V4L2_STD_PAL,
				[VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
				[VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
				[4 /* bttv */ ] = V4L2_STD_PAL_M,
				[5 /* bttv */ ] = V4L2_STD_PAL_N,
				[6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
			};
			struct video_channel *vc = arg;

			if (check_v4l2(t) == EINVAL)
				return 0;

			if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
				return 0;

			if (vc->norm < ARRAY_SIZE(map))
				t->std = map[vc->norm];
			tuner_fixup_std(t);
			if (t->freq)
				set_tv_freq(client, t->freq);
			return 0;
		}
	case VIDIOCSFREQ:
		{
			unsigned long *v = arg;

			if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
				return 0;
			if (check_v4l2(t) == EINVAL)
				return 0;

			set_freq(client, *v);
			return 0;
		}
	case VIDIOCGTUNER:
		{
			struct video_tuner *vt = arg;

			if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
				return 0;
			if (check_v4l2(t) == EINVAL)
				return 0;

			if (V4L2_TUNER_RADIO == t->mode) {
				if (t->has_signal)
					vt->signal = t->has_signal(client);
				if (t->is_stereo) {
					if (t->is_stereo(client))
						vt->flags |=
						    VIDEO_TUNER_STEREO_ON;
					else
						vt->flags &=
						    ~VIDEO_TUNER_STEREO_ON;
				}
				vt->flags |= VIDEO_TUNER_LOW;	/* Allow freqs at 62.5 Hz */

				vt->rangelow = radio_range[0] * 16000;
				vt->rangehigh = radio_range[1] * 16000;

			} else {
				vt->rangelow = tv_range[0] * 16;
				vt->rangehigh = tv_range[1] * 16;
			}

			return 0;
		}
	case VIDIOCGAUDIO:
		{
			struct video_audio *va = arg;

			if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
				return 0;
			if (check_v4l2(t) == EINVAL)
				return 0;

			if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
				va->mode = t->is_stereo(client)
				    ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
			return 0;
		}

	case VIDIOC_S_STD:
		{
			v4l2_std_id *id = arg;

			if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
					== EINVAL)
				return 0;

			switch_v4l2();

			t->std = *id;
			tuner_fixup_std(t);
			if (t->freq)
				set_freq(client, t->freq);
			break;
		}
	case VIDIOC_S_FREQUENCY:
		{
			struct v4l2_frequency *f = arg;

			t->freq = f->frequency;
			switch_v4l2();
			if (V4L2_TUNER_RADIO == f->type &&
			    V4L2_TUNER_RADIO != t->mode) {
				if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
					    == EINVAL)
					return 0;
			}
			set_freq(client,t->freq);

			break;
		}
	case VIDIOC_G_FREQUENCY:
		{
			struct v4l2_frequency *f = arg;

			if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
				return 0;
			switch_v4l2();
			f->type = t->mode;
			f->frequency = t->freq;
			break;
		}
	case VIDIOC_G_TUNER:
		{
			struct v4l2_tuner *tuner = arg;

			if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
				return 0;
			switch_v4l2();

			if (V4L2_TUNER_RADIO == t->mode) {

				if (t->has_signal)
					tuner->signal = t->has_signal(client);

				if (t->is_stereo) {
					if (t->is_stereo(client)) {
						tuner->rxsubchans =
						    V4L2_TUNER_SUB_STEREO |
						    V4L2_TUNER_SUB_MONO;
					} else {
						tuner->rxsubchans =
						    V4L2_TUNER_SUB_MONO;
					}
				}

				tuner->capability |=
				    V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;

				tuner->audmode = t->audmode;

				tuner->rangelow = radio_range[0] * 16000;
				tuner->rangehigh = radio_range[1] * 16000;
			} else {
				tuner->rangelow = tv_range[0] * 16;
				tuner->rangehigh = tv_range[1] * 16;
			}
			break;
		}
	case VIDIOC_S_TUNER:
		{
			struct v4l2_tuner *tuner = arg;

			if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
				return 0;

			switch_v4l2();

			if (V4L2_TUNER_RADIO == t->mode) {
				t->audmode = tuner->audmode;
				set_radio_freq(client, t->freq);
			}
			break;
		}
	default:
		tuner_dbg("Unimplemented IOCTL 0x%08x(dir=%d,tp='%c',nr=%d,sz=%d)\n",
					 cmd, _IOC_DIR(cmd), _IOC_TYPE(cmd),
					_IOC_NR(cmd), _IOC_SIZE(cmd));
		break;
	}

	return 0;
}

static int tuner_suspend(struct device *dev, pm_message_t state)
{
	struct i2c_client *c = container_of (dev, struct i2c_client, dev);
	struct tuner *t = i2c_get_clientdata (c);

	tuner_dbg ("suspend\n");
	/* FIXME: power down ??? */
	return 0;
}

static int tuner_resume(struct device *dev)
{
	struct i2c_client *c = container_of (dev, struct i2c_client, dev);
	struct tuner *t = i2c_get_clientdata (c);

	tuner_dbg ("resume\n");
	if (t->freq)
		set_freq(c, t->freq);
	return 0;
}

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

static struct i2c_driver driver = {
	.owner = THIS_MODULE,
	.name = "tuner",
	.id = I2C_DRIVERID_TUNER,
	.flags = I2C_DF_NOTIFY,
	.attach_adapter = tuner_probe,
	.detach_client = tuner_detach,
	.command = tuner_command,
	.driver = {
		   .suspend = tuner_suspend,
		   .resume = tuner_resume,
		   },
};
static struct i2c_client client_template = {
	.name = "(tuner unset)",
	.flags = I2C_CLIENT_ALLOW_USE,
	.driver = &driver,
};

static int __init tuner_init_module(void)
{
	return i2c_add_driver(&driver);
}

static void __exit tuner_cleanup_module(void)
{
	i2c_del_driver(&driver);
}

module_init(tuner_init_module);
module_exit(tuner_cleanup_module);

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-basic-offset: 8
 * End:
 */