saa7110.c

linux-2.6.15.6

		switch (decoder->norm) {
		case VIDEO_MODE_NTSC:
			res |= DECODER_STATUS_NTSC;
			break;
		case VIDEO_MODE_PAL:
			res |= DECODER_STATUS_PAL;
			break;
		case VIDEO_MODE_SECAM:
			res |= DECODER_STATUS_SECAM;
			break;
		}
		*(int *) arg = res;
	}
		break;

	case DECODER_SET_NORM:
		v = *(int *) arg;
		if (decoder->norm != v) {
			decoder->norm = v;
			//saa7110_write(client, 0x06, 0x03);
			switch (v) {
			case VIDEO_MODE_NTSC:
				saa7110_write(client, 0x0D, 0x86);
				saa7110_write(client, 0x0F, 0x50);
				saa7110_write(client, 0x11, 0x2C);
				//saa7110_write(client, 0x2E, 0x81);
				dprintk(1,
					KERN_INFO "%s: switched to NTSC\n",
					I2C_NAME(client));
				break;
			case VIDEO_MODE_PAL:
				saa7110_write(client, 0x0D, 0x86);
				saa7110_write(client, 0x0F, 0x10);
				saa7110_write(client, 0x11, 0x59);
				//saa7110_write(client, 0x2E, 0x9A);
				dprintk(1,
					KERN_INFO "%s: switched to PAL\n",
					I2C_NAME(client));
				break;
			case VIDEO_MODE_SECAM:
				saa7110_write(client, 0x0D, 0x87);
				saa7110_write(client, 0x0F, 0x10);
				saa7110_write(client, 0x11, 0x59);
				//saa7110_write(client, 0x2E, 0x9A);
				dprintk(1,
					KERN_INFO
					"%s: switched to SECAM\n",
					I2C_NAME(client));
				break;
			case VIDEO_MODE_AUTO:
				dprintk(1,
					KERN_INFO
					"%s: TV standard detection...\n",
					I2C_NAME(client));
				decoder->norm = determine_norm(client);
				*(int *) arg = decoder->norm;
				break;
			default:
				return -EPERM;
			}
		}
		break;

	case DECODER_SET_INPUT:
		v = *(int *) arg;
		if (v < 0 || v > SAA7110_MAX_INPUT) {
			dprintk(1,
				KERN_INFO "%s: input=%d not available\n",
				I2C_NAME(client), v);
			return -EINVAL;
		}
		if (decoder->input != v) {
			saa7110_selmux(client, v);
			dprintk(1, KERN_INFO "%s: switched to input=%d\n",
				I2C_NAME(client), v);
		}
		break;

	case DECODER_SET_OUTPUT:
		v = *(int *) arg;
		/* not much choice of outputs */
		if (v != 0)
			return -EINVAL;
		break;

	case DECODER_ENABLE_OUTPUT:
		v = *(int *) arg;
		if (decoder->enable != v) {
			decoder->enable = v;
			saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
			dprintk(1, KERN_INFO "%s: YUV %s\n", I2C_NAME(client),
				v ? "on" : "off");
		}
		break;

	case DECODER_SET_PICTURE:
	{
		struct video_picture *pic = arg;

		if (decoder->bright != pic->brightness) {
			/* We want 0 to 255 we get 0-65535 */
			decoder->bright = pic->brightness;
			saa7110_write(client, 0x19, decoder->bright >> 8);
		}
		if (decoder->contrast != pic->contrast) {
			/* We want 0 to 127 we get 0-65535 */
			decoder->contrast = pic->contrast;
			saa7110_write(client, 0x13,
				      decoder->contrast >> 9);
		}
		if (decoder->sat != pic->colour) {
			/* We want 0 to 127 we get 0-65535 */
			decoder->sat = pic->colour;
			saa7110_write(client, 0x12, decoder->sat >> 9);
		}
		if (decoder->hue != pic->hue) {
			/* We want -128 to 127 we get 0-65535 */
			decoder->hue = pic->hue;
			saa7110_write(client, 0x07,
				      (decoder->hue >> 8) - 128);
		}
	}
		break;

	case DECODER_DUMP:
		for (v = 0; v < 0x34; v += 16) {
			int j;
			dprintk(1, KERN_INFO "%s: %03x\n", I2C_NAME(client),
				v);
			for (j = 0; j < 16; j++) {
				dprintk(1, KERN_INFO " %02x",
					decoder->reg[v + j]);
			}
			dprintk(1, KERN_INFO "\n");
		}
		break;

	default:
		dprintk(1, KERN_INFO "unknown saa7110_command??(%d)\n",
			cmd);
		return -EINVAL;
	}
	return 0;
}

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

/*
 * Generic i2c probe
 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 */
static unsigned short normal_i2c[] = {
	I2C_SAA7110 >> 1,
	(I2C_SAA7110 >> 1) + 1,
	I2C_CLIENT_END
};

static unsigned short ignore = I2C_CLIENT_END;
                                                                                
static struct i2c_client_address_data addr_data = {
	.normal_i2c		= normal_i2c,
	.probe			= &ignore,
	.ignore			= &ignore,
};

static struct i2c_driver i2c_driver_saa7110;

static int
saa7110_detect_client (struct i2c_adapter *adapter,
		       int                 address,
		       int                 kind)
{
	struct i2c_client *client;
	struct saa7110 *decoder;
	int rv;

	dprintk(1,
		KERN_INFO
		"saa7110.c: detecting saa7110 client on address 0x%x\n",
		address << 1);

	/* Check if the adapter supports the needed features */
	if (!i2c_check_functionality
	    (adapter,
	     I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
		return 0;

	client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
	if (client == 0)
		return -ENOMEM;
	memset(client, 0, sizeof(struct i2c_client));
	client->addr = address;
	client->adapter = adapter;
	client->driver = &i2c_driver_saa7110;
	client->flags = I2C_CLIENT_ALLOW_USE;
	strlcpy(I2C_NAME(client), "saa7110", sizeof(I2C_NAME(client)));

	decoder = kmalloc(sizeof(struct saa7110), GFP_KERNEL);
	if (decoder == 0) {
		kfree(client);
		return -ENOMEM;
	}
	memset(decoder, 0, sizeof(struct saa7110));
	decoder->norm = VIDEO_MODE_PAL;
	decoder->input = 0;
	decoder->enable = 1;
	decoder->bright = 32768;
	decoder->contrast = 32768;
	decoder->hue = 32768;
	decoder->sat = 32768;
	init_waitqueue_head(&decoder->wq);
	i2c_set_clientdata(client, decoder);

	rv = i2c_attach_client(client);
	if (rv) {
		kfree(client);
		kfree(decoder);
		return rv;
	}

	rv = saa7110_write_block(client, initseq, sizeof(initseq));
	if (rv < 0)
		dprintk(1, KERN_ERR "%s_attach: init status %d\n",
			I2C_NAME(client), rv);
	else {
		int ver, status;
		saa7110_write(client, 0x21, 0x10);
		saa7110_write(client, 0x0e, 0x18);
		saa7110_write(client, 0x0D, 0x04);
		ver = saa7110_read(client);
		saa7110_write(client, 0x0D, 0x06);
		//mdelay(150);
		status = saa7110_read(client);
		dprintk(1,
			KERN_INFO
			"%s_attach: SAA7110A version %x at 0x%02x, status=0x%02x\n",
			I2C_NAME(client), ver, client->addr << 1, status);
		saa7110_write(client, 0x0D, 0x86);
		saa7110_write(client, 0x0F, 0x10);
		saa7110_write(client, 0x11, 0x59);
		//saa7110_write(client, 0x2E, 0x9A);
	}

	//saa7110_selmux(client,0);
	//determine_norm(client);
	/* setup and implicit mode 0 select has been performed */

	return 0;
}

static int
saa7110_attach_adapter (struct i2c_adapter *adapter)
{
	dprintk(1,
		KERN_INFO
		"saa7110.c: starting probe for adapter %s (0x%x)\n",
		I2C_NAME(adapter), adapter->id);
	return i2c_probe(adapter, &addr_data, &saa7110_detect_client);
}

static int
saa7110_detach_client (struct i2c_client *client)
{
	struct saa7110 *decoder = i2c_get_clientdata(client);
	int err;

	err = i2c_detach_client(client);
	if (err) {
		return err;
	}

	kfree(decoder);
	kfree(client);

	return 0;
}

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

static struct i2c_driver i2c_driver_saa7110 = {
	.owner = THIS_MODULE,
	.name = "saa7110",

	.id = I2C_DRIVERID_SAA7110,
	.flags = I2C_DF_NOTIFY,

	.attach_adapter = saa7110_attach_adapter,
	.detach_client = saa7110_detach_client,
	.command = saa7110_command,
};

static int __init
saa7110_init (void)
{
	return i2c_add_driver(&i2c_driver_saa7110);
}

static void __exit
saa7110_exit (void)
{
	i2c_del_driver(&i2c_driver_saa7110);
}

module_init(saa7110_init);
module_exit(saa7110_exit);