ks0127.c

来自「trident tm5600的linux驱动」· C语言 代码 · 共 799 行 · 第 1/2 页

		break;

	default:
		v4l_dbg(1, debug, c, "unknown revision\n");
		break;
	}
}

static int ks0127_command(struct i2c_client *c, unsigned cmd, void *arg)
{
	struct ks0127 *ks = i2c_get_clientdata(c);
	int		*iarg = (int *)arg;
	int		status;

	if (!ks)
		return -ENODEV;

	switch (cmd) {
	case DECODER_INIT:
		v4l_dbg(1, debug, c, "DECODER_INIT\n");
		ks0127_reset(c);
		break;

	case DECODER_SET_INPUT:
		switch(*iarg) {
		case KS_INPUT_COMPOSITE_1:
		case KS_INPUT_COMPOSITE_2:
		case KS_INPUT_COMPOSITE_3:
		case KS_INPUT_COMPOSITE_4:
		case KS_INPUT_COMPOSITE_5:
		case KS_INPUT_COMPOSITE_6:
			v4l_dbg(1, debug, c,
				"DECODER_SET_INPUT %d: Composite\n", *iarg);
			/* autodetect 50/60 Hz */
			ks0127_and_or(c, KS_CMDA,   0xfc, 0x00);
			/* VSE=0 */
			ks0127_and_or(c, KS_CMDA,   ~0x40, 0x00);
			/* set input line */
			ks0127_and_or(c, KS_CMDB,   0xb0, *iarg);
			/* non-freerunning mode */
			ks0127_and_or(c, KS_CMDC,   0x70, 0x0a);
			/* analog input */
			ks0127_and_or(c, KS_CMDD,   0x03, 0x00);
			/* enable chroma demodulation */
			ks0127_and_or(c, KS_CTRACK, 0xcf, 0x00);
			/* chroma trap, HYBWR=1 */
			ks0127_and_or(c, KS_LUMA,   0x00,
				       (reg_defaults[KS_LUMA])|0x0c);
			/* scaler fullbw, luma comb off */
			ks0127_and_or(c, KS_VERTIA, 0x08, 0x81);
			/* manual chroma comb .25 .5 .25 */
			ks0127_and_or(c, KS_VERTIC, 0x0f, 0x90);

			/* chroma path delay */
			ks0127_and_or(c, KS_CHROMB, 0x0f, 0x90);

			ks0127_write(c, KS_UGAIN, reg_defaults[KS_UGAIN]);
			ks0127_write(c, KS_VGAIN, reg_defaults[KS_VGAIN]);
			ks0127_write(c, KS_UVOFFH, reg_defaults[KS_UVOFFH]);
			ks0127_write(c, KS_UVOFFL, reg_defaults[KS_UVOFFL]);
			break;

		case KS_INPUT_SVIDEO_1:
		case KS_INPUT_SVIDEO_2:
		case KS_INPUT_SVIDEO_3:
			v4l_dbg(1, debug, c,
				"DECODER_SET_INPUT %d: S-Video\n", *iarg);
			/* autodetect 50/60 Hz */
			ks0127_and_or(c, KS_CMDA,   0xfc, 0x00);
			/* VSE=0 */
			ks0127_and_or(c, KS_CMDA,   ~0x40, 0x00);
			/* set input line */
			ks0127_and_or(c, KS_CMDB,   0xb0, *iarg);
			/* non-freerunning mode */
			ks0127_and_or(c, KS_CMDC,   0x70, 0x0a);
			/* analog input */
			ks0127_and_or(c, KS_CMDD,   0x03, 0x00);
			/* enable chroma demodulation */
			ks0127_and_or(c, KS_CTRACK, 0xcf, 0x00);
			ks0127_and_or(c, KS_LUMA, 0x00,
				       reg_defaults[KS_LUMA]);
			/* disable luma comb */
			ks0127_and_or(c, KS_VERTIA, 0x08,
				       (reg_defaults[KS_VERTIA]&0xf0)|0x01);
			ks0127_and_or(c, KS_VERTIC, 0x0f,
				       reg_defaults[KS_VERTIC]&0xf0);

			ks0127_and_or(c, KS_CHROMB, 0x0f,
				       reg_defaults[KS_CHROMB]&0xf0);

			ks0127_write(c, KS_UGAIN, reg_defaults[KS_UGAIN]);
			ks0127_write(c, KS_VGAIN, reg_defaults[KS_VGAIN]);
			ks0127_write(c, KS_UVOFFH, reg_defaults[KS_UVOFFH]);
			ks0127_write(c, KS_UVOFFL, reg_defaults[KS_UVOFFL]);
			break;

		case KS_INPUT_YUV656:
			v4l_dbg(1, debug, c,
				"DECODER_SET_INPUT 15: YUV656\n");
			if (ks->norm == VIDEO_MODE_NTSC ||
			    ks->norm == KS_STD_PAL_M)
				/* force 60 Hz */
				ks0127_and_or(c, KS_CMDA,   0xfc, 0x03);
			else
				/* force 50 Hz */
				ks0127_and_or(c, KS_CMDA,   0xfc, 0x02);

			ks0127_and_or(c, KS_CMDA,   0xff, 0x40); /* VSE=1 */
			/* set input line and VALIGN */
			ks0127_and_or(c, KS_CMDB,   0xb0, (*iarg | 0x40));
			/* freerunning mode, */
			/* TSTGEN = 1 TSTGFR=11 TSTGPH=0 TSTGPK=0  VMEM=1*/
			ks0127_and_or(c, KS_CMDC,   0x70, 0x87);
			/* digital input, SYNDIR = 0 INPSL=01 CLKDIR=0 EAV=0 */
			ks0127_and_or(c, KS_CMDD,   0x03, 0x08);
			/* disable chroma demodulation */
			ks0127_and_or(c, KS_CTRACK, 0xcf, 0x30);
			/* HYPK =01 CTRAP = 0 HYBWR=0 PED=1 RGBH=1 UNIT=1 */
			ks0127_and_or(c, KS_LUMA,   0x00, 0x71);
			ks0127_and_or(c, KS_VERTIC, 0x0f,
				       reg_defaults[KS_VERTIC]&0xf0);

			/* scaler fullbw, luma comb off */
			ks0127_and_or(c, KS_VERTIA, 0x08, 0x81);

			ks0127_and_or(c, KS_CHROMB, 0x0f,
				       reg_defaults[KS_CHROMB]&0xf0);

			ks0127_and_or(c, KS_CON, 0x00, 0x00);
			ks0127_and_or(c, KS_BRT, 0x00, 32);	/* spec: 34 */
				/* spec: 229 (e5) */
			ks0127_and_or(c, KS_SAT, 0x00, 0xe8);
			ks0127_and_or(c, KS_HUE, 0x00, 0);

			ks0127_and_or(c, KS_UGAIN, 0x00, 238);
			ks0127_and_or(c, KS_VGAIN, 0x00, 0x00);

			/*UOFF:0x30, VOFF:0x30, TSTCGN=1 */
			ks0127_and_or(c, KS_UVOFFH, 0x00, 0x4f);
			ks0127_and_or(c, KS_UVOFFL, 0x00, 0x00);
			break;

		default:
			v4l_dbg(1, debug, c,
				"DECODER_SET_INPUT: Unknown input %d\n", *iarg);
			break;
		}

		/* hack: CDMLPF sometimes spontaneously switches on; */
		/* force back off */
		ks0127_write(c, KS_DEMOD, reg_defaults[KS_DEMOD]);
		break;

	case DECODER_SET_OUTPUT:
		switch(*iarg) {
		case KS_OUTPUT_YUV656E:
			v4l_dbg(1, debug, c,
				"DECODER_SET_OUTPUT: OUTPUT_YUV656E (Missing)\n");
			return -EINVAL;

		case KS_OUTPUT_EXV:
			v4l_dbg(1, debug, c,
				"DECODER_SET_OUTPUT: OUTPUT_EXV\n");
			ks0127_and_or(c, KS_OFMTA, 0xf0, 0x09);
			break;
		}
		break;

	case DECODER_SET_NORM: /* sam This block mixes old and new norm names... */
		/* Set to automatic SECAM/Fsc mode */
		ks0127_and_or(c, KS_DEMOD, 0xf0, 0x00);

		ks->norm = *iarg;
		switch (*iarg) {
		/* this is untested !! */
		/* It just detects PAL_N/NTSC_M (no special frequencies) */
		/* And you have to set the standard a second time afterwards */
		case VIDEO_MODE_AUTO:
			v4l_dbg(1, debug, c,
				"DECODER_SET_NORM: AUTO\n");

			/* The chip determines the format */
			/* based on the current field rate */
			ks0127_and_or(c, KS_CMDA,   0xfc, 0x00);
			ks0127_and_or(c, KS_CHROMA, 0x9f, 0x20);
			/* This is wrong for PAL ! As I said, */
			/* you need to set the standard once again !! */
			ks->format_height = 240;
			ks->format_width = 704;
			break;

		case VIDEO_MODE_NTSC:
			v4l_dbg(1, debug, c,
				"DECODER_SET_NORM: NTSC_M\n");
			ks0127_and_or(c, KS_CHROMA, 0x9f, 0x20);
			ks->format_height = 240;
			ks->format_width = 704;
			break;

		case KS_STD_NTSC_N:
			v4l_dbg(1, debug, c,
				"KS0127_SET_NORM: NTSC_N (fixme)\n");
			ks0127_and_or(c, KS_CHROMA, 0x9f, 0x40);
			ks->format_height = 240;
			ks->format_width = 704;
			break;

		case VIDEO_MODE_PAL:
			v4l_dbg(1, debug, c,
				"DECODER_SET_NORM: PAL_N\n");
			ks0127_and_or(c, KS_CHROMA, 0x9f, 0x20);
			ks->format_height = 290;
			ks->format_width = 704;
			break;

		case KS_STD_PAL_M:
			v4l_dbg(1, debug, c,
				"KS0127_SET_NORM: PAL_M (fixme)\n");
			ks0127_and_or(c, KS_CHROMA, 0x9f, 0x40);
			ks->format_height = 290;
			ks->format_width = 704;
			break;

		case VIDEO_MODE_SECAM:
			v4l_dbg(1, debug, c,
				"KS0127_SET_NORM: SECAM\n");
			ks->format_height = 290;
			ks->format_width = 704;

			/* set to secam autodetection */
			ks0127_and_or(c, KS_CHROMA, 0xdf, 0x20);
			ks0127_and_or(c, KS_DEMOD, 0xf0, 0x00);
			schedule_timeout_interruptible(HZ/10+1);

			/* did it autodetect? */
			if (ks0127_read(c, KS_DEMOD) & 0x40)
				break;

			/* force to secam mode */
			ks0127_and_or(c, KS_DEMOD, 0xf0, 0x0f);
			break;

		default:
			v4l_dbg(1, debug, c,
				"DECODER_SET_NORM: Unknown norm %d\n", *iarg);
			break;
		}
		break;

	case DECODER_SET_PICTURE:
		v4l_dbg(1, debug, c,
			"DECODER_SET_PICTURE: not yet supported\n");
		return -EINVAL;

	/* sam todo: KS0127_SET_BRIGHTNESS: Merge into DECODER_SET_PICTURE */
	/* sam todo: KS0127_SET_CONTRAST: Merge into DECODER_SET_PICTURE */
	/* sam todo: KS0127_SET_HUE: Merge into DECODER_SET_PICTURE? */
	/* sam todo: KS0127_SET_SATURATION: Merge into DECODER_SET_PICTURE */
	/* sam todo: KS0127_SET_AGC_MODE: */
	/* sam todo: KS0127_SET_AGC: */
	/* sam todo: KS0127_SET_CHROMA_MODE: */
	/* sam todo: KS0127_SET_PIXCLK_MODE: */
	/* sam todo: KS0127_SET_GAMMA_MODE: */
	/* sam todo: KS0127_SET_UGAIN: */
	/* sam todo: KS0127_SET_VGAIN: */
	/* sam todo: KS0127_SET_INVALY: */
	/* sam todo: KS0127_SET_INVALU: */
	/* sam todo: KS0127_SET_INVALV: */
	/* sam todo: KS0127_SET_UNUSEY: */
	/* sam todo: KS0127_SET_UNUSEU: */
	/* sam todo: KS0127_SET_UNUSEV: */
	/* sam todo: KS0127_SET_VSALIGN_MODE: */

	case DECODER_ENABLE_OUTPUT:
	{
		int enable;

		iarg = arg;
		enable = (*iarg != 0);
		if (enable) {
			v4l_dbg(1, debug, c,
				"DECODER_ENABLE_OUTPUT on\n");
			/* All output pins on */
			ks0127_and_or(c, KS_OFMTA, 0xcf, 0x30);
			/* Obey the OEN pin */
			ks0127_and_or(c, KS_CDEM, 0x7f, 0x00);
		} else {
			v4l_dbg(1, debug, c,
				"DECODER_ENABLE_OUTPUT off\n");
			/* Video output pins off */
			ks0127_and_or(c, KS_OFMTA, 0xcf, 0x00);
			/* Ignore the OEN pin */
			ks0127_and_or(c, KS_CDEM, 0x7f, 0x80);
		}
		break;
	}

	/* sam todo: KS0127_SET_OUTPUT_MODE: */
	/* sam todo: KS0127_SET_WIDTH: */
	/* sam todo: KS0127_SET_HEIGHT: */
	/* sam todo: KS0127_SET_HSCALE: */

	case DECODER_GET_STATUS:
		v4l_dbg(1, debug, c, "DECODER_GET_STATUS\n");
		*iarg = 0;
		status = ks0127_read(c, KS_STAT);
		if (!(status & 0x20))		 /* NOVID not set */
			*iarg = (*iarg | DECODER_STATUS_GOOD);
		if ((status & 0x01))		      /* CLOCK set */
			*iarg = (*iarg | DECODER_STATUS_COLOR);
		if ((status & 0x08))		   /* PALDET set */
			*iarg = (*iarg | DECODER_STATUS_PAL);
		else
			*iarg = (*iarg | DECODER_STATUS_NTSC);
		break;

	/* Catch any unknown command */
	default:
		v4l_dbg(1, debug, c, "unknown: 0x%08x\n", cmd);
		return -EINVAL;
	}
	return 0;
}


/* Addresses to scan */
#define I2C_KS0127_ADDON   0xD8
#define I2C_KS0127_ONBOARD 0xDA

static unsigned short normal_i2c[] = {
	I2C_KS0127_ADDON >> 1,
	I2C_KS0127_ONBOARD >> 1,
	I2C_CLIENT_END
};

I2C_CLIENT_INSMOD;

static int ks0127_probe(struct i2c_client *c, const struct i2c_device_id *id)
{
	struct ks0127 *ks;

	v4l_info(c, "%s chip found @ 0x%x (%s)\n",
		c->addr == (I2C_KS0127_ADDON >> 1) ? "addon" : "on-board",
		c->addr << 1, c->adapter->name);

	ks = kzalloc(sizeof(*ks), GFP_KERNEL);
	if (ks == NULL)
		return -ENOMEM;

	i2c_set_clientdata(c, ks);

	ks->ks_type = KS_TYPE_UNKNOWN;

	/* power up */
	init_reg_defaults();
	ks0127_write(c, KS_CMDA, 0x2c);
	mdelay(10);

	/* reset the device */
	ks0127_reset(c);
	return 0;
}

static int ks0127_remove(struct i2c_client *c)
{
	struct ks0127 *ks = i2c_get_clientdata(c);

	ks0127_write(c, KS_OFMTA, 0x20); /* tristate */
	ks0127_write(c, KS_CMDA, 0x2c | 0x80); /* power down */

	kfree(ks);
	return 0;
}

static int ks0127_legacy_probe(struct i2c_adapter *adapter)
{
	return adapter->id == I2C_HW_B_ZR36067;
}

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
static const struct i2c_device_id ks0127_id[] = {
	{ "ks0127", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, ks0127_id);
#endif

static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	.name = "ks0127",
	.driverid = I2C_DRIVERID_KS0127,
	.command = ks0127_command,
	.probe = ks0127_probe,
	.remove = ks0127_remove,
	.legacy_probe = ks0127_legacy_probe,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
	.id_table = ks0127_id,
#endif
};