av7110_v4l.c

linux_dvb的驱动程序：linuxtv-dvb-1.1.1.rar

		msp_writereg(av7110, MSP_WR_DSP, 0x0000, 0x4f00); // loudspeaker + headphone
		msp_writereg(av7110, MSP_WR_DSP, 0x0007, 0x4f00); // SCART 1 volume
		return 0;
	}
	case VIDIOC_ENUMINPUT:
	{
		struct v4l2_input *i = arg;

		DEB_EE(("VIDIOC_ENUMINPUT: %d\n", i->index));

		if (av7110->has_analog_tuner ) {
			if (i->index < 0 || i->index >= 2)
				return -EINVAL;
		} else {
			if (i->index != 0)
				return -EINVAL;
		}

		memcpy(i, &inputs[i->index], sizeof(struct v4l2_input));

		return 0;
	}
	case VIDIOC_G_INPUT:
	{
		int *input = (int *)arg;
		*input = av7110->current_input;
		DEB_EE(("VIDIOC_G_INPUT: %d\n", *input));
		return 0;
	}
	case VIDIOC_S_INPUT:
	{
		int input = *(int *)arg;

		DEB_EE(("VIDIOC_S_INPUT: %d\n", input));

		if (!av7110->has_analog_tuner )
			return 0;

		if (input < 0 || input >= 2)
			return -EINVAL;

		/* FIXME: switch inputs here */
		av7110->current_input = input;
		return av7110_dvb_c_switch(fh);
	}
	case VIDIOC_G_AUDIO:
	{
		struct v4l2_audio *a = arg;

		DEB_EE(("VIDIOC_G_AUDIO: %d\n", a->index));
		if (a->index != 0)
			return -EINVAL;
		memcpy(a, &msp3400_v4l2_audio, sizeof(struct v4l2_audio));
		break;
	}
	case VIDIOC_S_AUDIO:
	{
		struct v4l2_audio *a = arg;
		DEB_EE(("VIDIOC_S_AUDIO: %d\n", a->index));
		break;
	}
	default:
		printk("no such ioctl\n");
		return -ENOIOCTLCMD;
	}
	return 0;
}


/****************************************************************************
 * INITIALIZATION
 ****************************************************************************/

struct saa7146_extension_ioctls ioctls[] = {
	{ VIDIOC_ENUMINPUT,	SAA7146_EXCLUSIVE },
	{ VIDIOC_G_INPUT,	SAA7146_EXCLUSIVE },
	{ VIDIOC_S_INPUT,	SAA7146_EXCLUSIVE },
	{ VIDIOC_G_FREQUENCY,	SAA7146_EXCLUSIVE },
	{ VIDIOC_S_FREQUENCY,	SAA7146_EXCLUSIVE },
	{ VIDIOC_G_TUNER,	SAA7146_EXCLUSIVE },
	{ VIDIOC_S_TUNER,	SAA7146_EXCLUSIVE },
	{ VIDIOC_G_AUDIO,	SAA7146_EXCLUSIVE },
	{ VIDIOC_S_AUDIO,	SAA7146_EXCLUSIVE },
	{ 0, 0 }
};

static u8 saa7113_init_regs[] = {
	0x02, 0xd0,
	0x03, 0x23,
	0x04, 0x00,
	0x05, 0x00,
	0x06, 0xe9,
	0x07, 0x0d,
	0x08, 0x98,
	0x09, 0x02,
	0x0a, 0x80,
	0x0b, 0x40,
	0x0c, 0x40,
	0x0d, 0x00,
	0x0e, 0x01,
	0x0f, 0x7c,
	0x10, 0x48,
	0x11, 0x0c,
	0x12, 0x8b,
	0x13, 0x1a,
	0x14, 0x00,
	0x15, 0x00,
	0x16, 0x00,
	0x17, 0x00,
	0x18, 0x00,
	0x19, 0x00,
	0x1a, 0x00,
	0x1b, 0x00,
	0x1c, 0x00,
	0x1d, 0x00,
	0x1e, 0x00,

	0x41, 0x77,
	0x42, 0x77,
	0x43, 0x77,
	0x44, 0x77,
	0x45, 0x77,
	0x46, 0x77,
	0x47, 0x77,
	0x48, 0x77,
	0x49, 0x77,
	0x4a, 0x77,
	0x4b, 0x77,
	0x4c, 0x77,
	0x4d, 0x77,
	0x4e, 0x77,
	0x4f, 0x77,
	0x50, 0x77,
	0x51, 0x77,
	0x52, 0x77,
	0x53, 0x77,
	0x54, 0x77,
	0x55, 0x77,
	0x56, 0x77,
	0x57, 0xff,

	0xff
};


static struct saa7146_ext_vv av7110_vv_data_st;
static struct saa7146_ext_vv av7110_vv_data_c;

int av7110_init_analog_module(struct av7110 *av7110)
{
	u16 version1, version2;

	if (i2c_writereg(av7110, 0x80, 0x0, 0x80) != 1
	    || i2c_writereg(av7110, 0x80, 0x0, 0) != 1)
		return -ENODEV;

	printk("av7110(%d): DVB-C analog module detected, initializing MSP3400\n",
		av7110->dvb_adapter->num);
	av7110->adac_type = DVB_ADAC_MSP;
	dvb_delay(100); // the probing above resets the msp...
	msp_readreg(av7110, MSP_RD_DSP, 0x001e, &version1);
	msp_readreg(av7110, MSP_RD_DSP, 0x001f, &version2);
	printk("av7110(%d): MSP3400 version 0x%04x 0x%04x\n",
		av7110->dvb_adapter->num, version1, version2);
	msp_writereg(av7110, MSP_WR_DSP, 0x0013, 0x0c00);
	msp_writereg(av7110, MSP_WR_DSP, 0x0000, 0x7f00); // loudspeaker + headphone
	msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0220); // loudspeaker source
	msp_writereg(av7110, MSP_WR_DSP, 0x0009, 0x0220); // headphone source
	msp_writereg(av7110, MSP_WR_DSP, 0x0004, 0x7f00); // loudspeaker volume
	msp_writereg(av7110, MSP_WR_DSP, 0x000a, 0x0220); // SCART 1 source
	msp_writereg(av7110, MSP_WR_DSP, 0x0007, 0x7f00); // SCART 1 volume
	msp_writereg(av7110, MSP_WR_DSP, 0x000d, 0x4800); // prescale SCART

	if (i2c_writereg(av7110, 0x48, 0x01, 0x00)!=1) {
		INFO(("saa7113 not accessible.\n"));
	} else {
		u8 *i = saa7113_init_regs;
		av7110->has_analog_tuner = 1;
		/* init the saa7113 */
		while (*i != 0xff) {
			if (i2c_writereg(av7110, 0x48, i[0], i[1]) != 1) {
				printk("av7110(%d): saa7113 initialization failed",
						av7110->dvb_adapter->num);
				break;
			}
			i += 2;
		}
		/* setup msp for analog sound: B/G Dual-FM */
		msp_writereg(av7110, MSP_WR_DEM, 0x00bb, 0x02d0); // AD_CV
		msp_writereg(av7110, MSP_WR_DEM, 0x0001,  3); // FIR1
		msp_writereg(av7110, MSP_WR_DEM, 0x0001, 18); // FIR1
		msp_writereg(av7110, MSP_WR_DEM, 0x0001, 27); // FIR1
		msp_writereg(av7110, MSP_WR_DEM, 0x0001, 48); // FIR1
		msp_writereg(av7110, MSP_WR_DEM, 0x0001, 66); // FIR1
		msp_writereg(av7110, MSP_WR_DEM, 0x0001, 72); // FIR1
		msp_writereg(av7110, MSP_WR_DEM, 0x0005,  4); // FIR2
		msp_writereg(av7110, MSP_WR_DEM, 0x0005, 64); // FIR2
		msp_writereg(av7110, MSP_WR_DEM, 0x0005,  0); // FIR2
		msp_writereg(av7110, MSP_WR_DEM, 0x0005,  3); // FIR2
		msp_writereg(av7110, MSP_WR_DEM, 0x0005, 18); // FIR2
		msp_writereg(av7110, MSP_WR_DEM, 0x0005, 27); // FIR2
		msp_writereg(av7110, MSP_WR_DEM, 0x0005, 48); // FIR2
		msp_writereg(av7110, MSP_WR_DEM, 0x0005, 66); // FIR2
		msp_writereg(av7110, MSP_WR_DEM, 0x0005, 72); // FIR2
		msp_writereg(av7110, MSP_WR_DEM, 0x0083, 0xa000); // MODE_REG
		msp_writereg(av7110, MSP_WR_DEM, 0x0093, 0x00aa); // DCO1_LO 5.74MHz
		msp_writereg(av7110, MSP_WR_DEM, 0x009b, 0x04fc); // DCO1_HI
		msp_writereg(av7110, MSP_WR_DEM, 0x00a3, 0x038e); // DCO2_LO 5.5MHz
		msp_writereg(av7110, MSP_WR_DEM, 0x00ab, 0x04c6); // DCO2_HI
		msp_writereg(av7110, MSP_WR_DEM, 0x0056, 0); // LOAD_REG 1/2
	}

	memcpy(standard, dvb_standard, sizeof(struct saa7146_standard) * 2);
	/* set dd1 stream a & b */
	saa7146_write(av7110->dev, DD1_STREAM_B, 0x00000000);
	saa7146_write(av7110->dev, DD1_INIT, 0x03000700);
	saa7146_write(av7110->dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));

	return 0;
}

int av7110_init_v4l(struct av7110 *av7110)
{
	struct saa7146_dev* dev = av7110->dev;
	int ret;

	/* special case DVB-C: these cards have an analog tuner
	   plus need some special handling, so we have separate
	   saa7146_ext_vv data for these... */
	if (av7110->has_analog_tuner)
		ret = saa7146_vv_init(dev, &av7110_vv_data_c);
	else
		ret = saa7146_vv_init(dev, &av7110_vv_data_st);

	if (ret) {
		ERR(("cannot init capture device. skipping.\n"));
		return -ENODEV;
	}

	if (saa7146_register_device(&av7110->v4l_dev, dev, "av7110", VFL_TYPE_GRABBER)) {
		ERR(("cannot register capture device. skipping.\n"));
		saa7146_vv_release(dev);
		return -ENODEV;
	}
	if (av7110->has_analog_tuner) {
		if (saa7146_register_device(&av7110->vbi_dev, dev, "av7110", VFL_TYPE_VBI)) {
			ERR(("cannot register vbi v4l2 device. skipping.\n"));
		} else
			/* we use this to remember that this dvb-c card can do vbi */
			av7110->has_analog_tuner = 2;
	}
	return 0;
}

int av7110_exit_v4l(struct av7110 *av7110)
{
	saa7146_unregister_device(&av7110->v4l_dev, av7110->dev);
	if (2 == av7110->has_analog_tuner)
		saa7146_unregister_device(&av7110->vbi_dev, av7110->dev);
	return 0;
}



/* FIXME: these values are experimental values that look better than the
   values from the latest "official" driver -- at least for me... (MiHu) */
static struct saa7146_standard standard[] = {
	{
		.name	= "PAL",	.id		= V4L2_STD_PAL_BG,
		.v_offset	= 0x15,	.v_field	= 288,		.v_calc	= 576,
		.h_offset	= 0x48,	.h_pixels	= 708,		.h_calc	= 708,
		.v_max_out	= 576,	.h_max_out	= 768,
	}, {
		.name	= "NTSC",	.id		= V4L2_STD_NTSC,
		.v_offset	= 0x10,	.v_field	= 244,		.v_calc	= 480,
		.h_offset	= 0x40,	.h_pixels	= 708,		.h_calc	= 708,
		.v_max_out	= 480,	.h_max_out	= 640,
	}
};

static struct saa7146_standard analog_standard[] = {
	{
		.name	= "PAL",	.id		= V4L2_STD_PAL_BG,
		.v_offset	= 0x1b,	.v_field	= 288,		.v_calc	= 576,
		.h_offset	= 0x08,	.h_pixels	= 708,		.h_calc	= 708,
		.v_max_out	= 576,	.h_max_out	= 768,
	}, {
		.name	= "NTSC",	.id		= V4L2_STD_NTSC,
		.v_offset	= 0x10,	.v_field	= 244,		.v_calc	= 480,
		.h_offset	= 0x40,	.h_pixels	= 708,		.h_calc	= 708,
		.v_max_out	= 480,	.h_max_out	= 640,
	}
};

static struct saa7146_standard dvb_standard[] = {
	{
		.name	= "PAL",	.id		= V4L2_STD_PAL_BG,
		.v_offset	= 0x14,	.v_field	= 288,		.v_calc	= 576,
		.h_offset	= 0x48,	.h_pixels	= 708,		.h_calc	= 708,
		.v_max_out	= 576,	.h_max_out	= 768,
	}, {
		.name	= "NTSC",	.id		= V4L2_STD_NTSC,
		.v_offset	= 0x10,	.v_field	= 244,		.v_calc	= 480,
		.h_offset	= 0x40,	.h_pixels	= 708,		.h_calc	= 708,
		.v_max_out	= 480,	.h_max_out	= 640,
	}
};

static int std_callback(struct saa7146_dev* dev, struct saa7146_standard *std)
{
	struct av7110 *av7110 = (struct av7110*) dev->ext_priv;

	if (std->id == V4L2_STD_PAL) {
		av7110->vidmode = VIDEO_MODE_PAL;
		av7110_set_vidmode(av7110, av7110->vidmode);
	}
	else if (std->id == V4L2_STD_NTSC) {
		av7110->vidmode = VIDEO_MODE_NTSC;
		av7110_set_vidmode(av7110, av7110->vidmode);
	}
	else
		return -1;

	return 0;
}


static struct saa7146_ext_vv av7110_vv_data_st = {
	.inputs		= 1,
	.audios		= 1,
	.capabilities	= 0,
	.flags		= 0,

	.stds		= &standard[0],
	.num_stds	= sizeof(standard) / sizeof(struct saa7146_standard),
	.std_callback	= &std_callback,

	.ioctls		= &ioctls[0],
	.ioctl		= av7110_ioctl,
};

static struct saa7146_ext_vv av7110_vv_data_c = {
	.inputs		= 1,
	.audios		= 1,
	.capabilities	= V4L2_CAP_TUNER | V4L2_CAP_VBI_CAPTURE,
	.flags		= SAA7146_USE_PORT_B_FOR_VBI,

	.stds		= &standard[0],
	.num_stds	= sizeof(standard) / sizeof(struct saa7146_standard),
	.std_callback	= &std_callback,

	.ioctls		= &ioctls[0],
	.ioctl		= av7110_ioctl,
};