ks0127.c

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	switch (cmd) {

	case DECODER_INIT:
		dprintk("ks0127: command DECODER_INIT\n");
		ks0127_reset(ks);
		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:
			dprintk("ks0127: command DECODER_SET_INPUT %d: "
				"Composite\n", *iarg);
			/* autodetect 50/60 Hz */
			ks0127_and_or(ks, KS_CMDA,   0xfc, 0x00);
			/* VSE=0 */
			ks0127_and_or(ks, KS_CMDA,   ~0x40, 0x00);
			/* set input line */
			ks0127_and_or(ks, KS_CMDB,   0xb0, *iarg);
			/* non-freerunning mode */
			ks0127_and_or(ks, KS_CMDC,   0x70, 0x0a);
			/* analog input */
			ks0127_and_or(ks, KS_CMDD,   0x03, 0x00);
			/* enable chroma demodulation */
			ks0127_and_or(ks, KS_CTRACK, 0xcf, 0x00);
			/* chroma trap, HYBWR=1 */
			ks0127_and_or(ks, KS_LUMA,   0x00,
				       (reg_defaults[KS_LUMA])|0x0c);
			/* scaler fullbw, luma comb off */
			ks0127_and_or(ks, KS_VERTIA, 0x08, 0x81);
			/* manual chroma comb .25 .5 .25 */
			ks0127_and_or(ks, KS_VERTIC, 0x0f, 0x90);

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

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

		case KS_INPUT_SVIDEO_1:
		case KS_INPUT_SVIDEO_2:
		case KS_INPUT_SVIDEO_3:
			dprintk("ks0127: command DECODER_SET_INPUT %d: "
				"S-Video\n", *iarg);
			/* autodetect 50/60 Hz */
			ks0127_and_or(ks, KS_CMDA,   0xfc, 0x00);
			/* VSE=0 */
			ks0127_and_or(ks, KS_CMDA,   ~0x40, 0x00);
			/* set input line */
			ks0127_and_or(ks, KS_CMDB,   0xb0, *iarg);
			/* non-freerunning mode */
			ks0127_and_or(ks, KS_CMDC,   0x70, 0x0a);
			/* analog input */
			ks0127_and_or(ks, KS_CMDD,   0x03, 0x00);
			/* enable chroma demodulation */
			ks0127_and_or(ks, KS_CTRACK, 0xcf, 0x00);
			ks0127_and_or(ks, KS_LUMA, 0x00,
				       reg_defaults[KS_LUMA]);
			/* disable luma comb */
			ks0127_and_or(ks, KS_VERTIA, 0x08,
				       (reg_defaults[KS_VERTIA]&0xf0)|0x01);
			ks0127_and_or(ks, KS_VERTIC, 0x0f,
				       reg_defaults[KS_VERTIC]&0xf0);

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

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

		case KS_INPUT_YUV656:
			dprintk("ks0127: command DECODER_SET_INPUT 15: "
				"YUV656\n");
			if (ks->norm == VIDEO_MODE_NTSC ||
			    ks->norm == KS_STD_PAL_M)
				/* force 60 Hz */
				ks0127_and_or(ks, KS_CMDA,   0xfc, 0x03);
			else
				/* force 50 Hz */
				ks0127_and_or(ks, KS_CMDA,   0xfc, 0x02);

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

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

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

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

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

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

		default:
			dprintk("ks0127: command DECODER_SET_INPUT: "
				"Unknown input %d\n", *iarg);
			break;
		}

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

	case DECODER_SET_OUTPUT:
		switch(*iarg) {
		case KS_OUTPUT_YUV656E:
			dprintk("ks0127: command DECODER_SET_OUTPUT: "
				"OUTPUT_YUV656E (Missing)\n");
			return -EINVAL;
			break;

		case KS_OUTPUT_EXV:
			dprintk("ks0127: command DECODER_SET_OUTPUT: "
				"OUTPUT_EXV\n");
			ks0127_and_or(ks, 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(ks, 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:
			dprintk("ks0127: command DECODER_SET_NORM: AUTO\n");

			/* The chip determines the format */
			/* based on the current field rate */
			ks0127_and_or(ks, KS_CMDA,   0xfc, 0x00);
			ks0127_and_or(ks, 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:
			dprintk("ks0127: command DECODER_SET_NORM: NTSC_M\n");
			ks0127_and_or(ks, KS_CHROMA, 0x9f, 0x20);
			ks->format_height = 240;
			ks->format_width = 704;
			break;

		case KS_STD_NTSC_N:
			dprintk("ks0127: command KS0127_SET_STANDARD: "
				"NTSC_N (fixme)\n");
			ks0127_and_or(ks, KS_CHROMA, 0x9f, 0x40);
			ks->format_height = 240;
			ks->format_width = 704;
			break;

		case VIDEO_MODE_PAL:
			dprintk("ks0127: command DECODER_SET_NORM: PAL_N\n");
			ks0127_and_or(ks, KS_CHROMA, 0x9f, 0x20);
			ks->format_height = 290;
			ks->format_width = 704;
			break;

		case KS_STD_PAL_M:
			dprintk("ks0127: command KS0127_SET_STANDARD: "
				"PAL_M (fixme)\n");
			ks0127_and_or(ks, KS_CHROMA, 0x9f, 0x40);
			ks->format_height = 290;
			ks->format_width = 704;
			break;

		case VIDEO_MODE_SECAM:
			dprintk("ks0127: command KS0127_SET_STANDARD: "
				"SECAM\n");
			ks->format_height = 290;
			ks->format_width = 704;

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

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

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

		default:
			dprintk("ks0127: command DECODER_SET_NORM: "
				"Unknown norm %d\n", *iarg);
			break;
		}
		break;

	case DECODER_SET_PICTURE:
		dprintk("ks0127: command DECODER_SET_PICTURE "
			"not yet supported (fixme)\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 *iarg = arg;
		int enable = (*iarg != 0);
			if (enable) {
				dprintk("ks0127: command "
					"DECODER_ENABLE_OUTPUT on "
					"(%d)\n", enable);
				/* All output pins on */
				ks0127_and_or(ks, KS_OFMTA, 0xcf, 0x30);
				/* Obey the OEN pin */
				ks0127_and_or(ks, KS_CDEM, 0x7f, 0x00);
			} else {
				dprintk("ks0127: command "
					"DECODER_ENABLE_OUTPUT off "
					"(%d)\n", enable);
				/* Video output pins off */
				ks0127_and_or(ks, KS_OFMTA, 0xcf, 0x00);
				/* Ignore the OEN pin */
				ks0127_and_or(ks, 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:
		dprintk("ks0127: command DECODER_GET_STATUS\n");
		*iarg = 0;
		status = ks0127_read(ks, 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:
		dprintk("ks0127: command unknown: %04X\n", cmd);
		return -EINVAL;
	}
	return 0;
}




static int ks0127_probe(struct i2c_adapter *adapter);
static int ks0127_detach(struct i2c_client *client);
static int ks0127_command(struct i2c_client *client,
			  unsigned int cmd, void *arg);



/* Addresses to scan */
static unsigned short normal_i2c[] = {I2C_KS0127_ADDON>>1,
				       I2C_KS0127_ONBOARD>>1, I2C_CLIENT_END};
static unsigned short probe[2] =	{I2C_CLIENT_END, I2C_CLIENT_END};
static unsigned short ignore[2] = 	{I2C_CLIENT_END, I2C_CLIENT_END};
static struct i2c_client_address_data addr_data = {
	normal_i2c,
	probe,
	ignore,
};

static struct i2c_driver i2c_driver_ks0127 = {
	.driver.name = "ks0127",
	.id             = I2C_DRIVERID_KS0127,
	.attach_adapter = ks0127_probe,
	.detach_client  = ks0127_detach,
	.command        = ks0127_command
};

static struct i2c_client ks0127_client_tmpl =
{
	.name = "(ks0127 unset)",
	.addr = 0,
	.adapter = NULL,
	.driver = &i2c_driver_ks0127,
	.usage_count = 0
};

static int ks0127_found_proc(struct i2c_adapter *adapter, int addr, int kind)
{
	struct ks0127 *ks;
	struct i2c_client *client;

	client = kzalloc(sizeof(*client), GFP_KERNEL);
	if (client == NULL)
		return -ENOMEM;
	memcpy(client, &ks0127_client_tmpl, sizeof(*client));

	ks = kzalloc(sizeof(*ks), GFP_KERNEL);
	if (ks == NULL) {
		kfree(client);
		return -ENOMEM;
	}

	i2c_set_clientdata(client, ks);
	client->adapter = adapter;
	client->addr = addr;
	sprintf(client->name, "ks0127-%02x", adapter->id);

	ks->client = client;
	ks->addr = addr;
	ks->ks_type = KS_TYPE_UNKNOWN;

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

	/* reset the device */
	ks0127_reset(ks);
	printk(KERN_INFO "ks0127: attach: %s video decoder\n",
	       ks->addr==(I2C_KS0127_ADDON>>1) ? "addon" : "on-board");

	i2c_attach_client(client);
	return 0;
}


static int ks0127_probe(struct i2c_adapter *adapter)
{
	if (adapter->id == I2C_HW_B_ZR36067)
		return i2c_probe(adapter, &addr_data, ks0127_found_proc);
	return 0;
}

static int ks0127_detach(struct i2c_client *client)
{
	struct ks0127 *ks = i2c_get_clientdata(client);

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

	i2c_detach_client(client);
	kfree(ks);
	kfree(client);

	dprintk("ks0127: detach\n");
	return 0;
}


static int __devinit ks0127_init_module(void)
{
	init_reg_defaults();
	return i2c_add_driver(&i2c_driver_ks0127);
}

static void __devexit ks0127_cleanup_module(void)
{
	i2c_del_driver(&i2c_driver_ks0127);
}


module_init(ks0127_init_module);
module_exit(ks0127_cleanup_module);