tvp5150.c

linux2.6.16版本

	tvp5150_write(c, TVP5150_CONTRAST_CTL, decoder->contrast >> 8);
	tvp5150_write(c, TVP5150_SATURATION_CTL, decoder->contrast >> 8);
	tvp5150_write(c, TVP5150_HUE_CTL, (decoder->hue - 32768) >> 8);

	tvp5150_set_std(c, decoder->norm);
};

static int tvp5150_get_ctrl(struct i2c_client *c, struct v4l2_control *ctrl)
{
/*	struct tvp5150 *decoder = i2c_get_clientdata(c); */

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		ctrl->value = tvp5150_read(c, TVP5150_BRIGHT_CTL);
		return 0;
	case V4L2_CID_CONTRAST:
		ctrl->value = tvp5150_read(c, TVP5150_CONTRAST_CTL);
		return 0;
	case V4L2_CID_SATURATION:
		ctrl->value = tvp5150_read(c, TVP5150_SATURATION_CTL);
		return 0;
	case V4L2_CID_HUE:
		ctrl->value = tvp5150_read(c, TVP5150_HUE_CTL);
		return 0;
	}
	return -EINVAL;
}

static int tvp5150_set_ctrl(struct i2c_client *c, struct v4l2_control *ctrl)
{
/*	struct tvp5150 *decoder = i2c_get_clientdata(c); */

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		tvp5150_write(c, TVP5150_BRIGHT_CTL, ctrl->value);
		return 0;
	case V4L2_CID_CONTRAST:
		tvp5150_write(c, TVP5150_CONTRAST_CTL, ctrl->value);
		return 0;
	case V4L2_CID_SATURATION:
		tvp5150_write(c, TVP5150_SATURATION_CTL, ctrl->value);
		return 0;
	case V4L2_CID_HUE:
		tvp5150_write(c, TVP5150_HUE_CTL, ctrl->value);
		return 0;
	}
	return -EINVAL;
}

/****************************************************************************
			I2C Command
 ****************************************************************************/
static int tvp5150_command(struct i2c_client *c,
			   unsigned int cmd, void *arg)
{
	struct tvp5150 *decoder = i2c_get_clientdata(c);

	switch (cmd) {

	case 0:
	case VIDIOC_INT_RESET:
	case DECODER_INIT:
		tvp5150_reset(c);
		break;
	case VIDIOC_S_STD:
		if (decoder->norm == *(v4l2_std_id *)arg)
			break;
		return tvp5150_set_std(c, *(v4l2_std_id *)arg);
	case VIDIOC_G_STD:
		*(v4l2_std_id *)arg = decoder->norm;
		break;

#ifdef CONFIG_VIDEO_ADV_DEBUG
	case VIDIOC_INT_G_REGISTER:
	{
		struct v4l2_register *reg = arg;

		if (reg->i2c_id != I2C_DRIVERID_TVP5150)
			return -EINVAL;
		reg->val = tvp5150_read(c, reg->reg & 0xff);
		break;
	}

	case VIDIOC_INT_S_REGISTER:
	{
		struct v4l2_register *reg = arg;

		if (reg->i2c_id != I2C_DRIVERID_TVP5150)
			return -EINVAL;
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;
		tvp5150_write(c, reg->reg & 0xff, reg->val & 0xff);
		break;
	}
#endif

	case DECODER_DUMP:
		dump_reg(c);
		break;

	case DECODER_GET_CAPABILITIES:
		{
			struct video_decoder_capability *cap = arg;

			cap->flags = VIDEO_DECODER_PAL |
			    VIDEO_DECODER_NTSC |
			    VIDEO_DECODER_SECAM |
			    VIDEO_DECODER_AUTO | VIDEO_DECODER_CCIR;
			cap->inputs = 3;
			cap->outputs = 1;
			break;
		}
	case DECODER_GET_STATUS:
		{
			int *iarg = arg;
			int status;
			int res=0;
			status = tvp5150_read(c, 0x88);
			if(status&0x08){
				res |= DECODER_STATUS_COLOR;
			}
			if(status&0x04 && status&0x02){
				res |= DECODER_STATUS_GOOD;
			}
			*iarg=res;
			break;
		}

	case DECODER_SET_GPIO:
		break;

	case DECODER_SET_VBI_BYPASS:
		break;

	case DECODER_SET_NORM:
		{
			int *iarg = arg;

			switch (*iarg) {

			case VIDEO_MODE_NTSC:
				break;

			case VIDEO_MODE_PAL:
				break;

			case VIDEO_MODE_SECAM:
				break;

			case VIDEO_MODE_AUTO:
				break;

			default:
				return -EINVAL;

			}
			decoder->norm = *iarg;
			break;
		}
	case DECODER_SET_INPUT:
		{
			int *iarg = arg;
			if (*iarg < 0 || *iarg > 3) {
				return -EINVAL;
			}

			decoder->input = *iarg;
			tvp5150_selmux(c, decoder->input);

			break;
		}
	case DECODER_SET_OUTPUT:
		{
			int *iarg = arg;

			/* not much choice of outputs */
			if (*iarg != 0) {
				return -EINVAL;
			}
			break;
		}
	case DECODER_ENABLE_OUTPUT:
		{
			int *iarg = arg;

			decoder->enable = (*iarg != 0);

			tvp5150_selmux(c, decoder->input);

			break;
		}
	case VIDIOC_QUERYCTRL:
		{
			struct v4l2_queryctrl *qc = arg;
			int i;

			tvp5150_dbg(1, "VIDIOC_QUERYCTRL called\n");

			for (i = 0; i < ARRAY_SIZE(tvp5150_qctrl); i++)
				if (qc->id && qc->id == tvp5150_qctrl[i].id) {
					memcpy(qc, &(tvp5150_qctrl[i]),
					       sizeof(*qc));
					return 0;
				}

			return -EINVAL;
		}
	case VIDIOC_G_CTRL:
		{
			struct v4l2_control *ctrl = arg;
			tvp5150_dbg(1, "VIDIOC_G_CTRL called\n");

			return tvp5150_get_ctrl(c, ctrl);
		}
	case VIDIOC_S_CTRL:
		{
			struct v4l2_control *ctrl = arg;
			u8 i, n;
			n = sizeof(tvp5150_qctrl) / sizeof(tvp5150_qctrl[0]);
			for (i = 0; i < n; i++)
				if (ctrl->id == tvp5150_qctrl[i].id) {
					if (ctrl->value <
					    tvp5150_qctrl[i].minimum
					    || ctrl->value >
					    tvp5150_qctrl[i].maximum)
						return -ERANGE;
					tvp5150_dbg(1,
						"VIDIOC_S_CTRL: id=%d, value=%d\n",
						ctrl->id, ctrl->value);
					return tvp5150_set_ctrl(c, ctrl);
				}
			return -EINVAL;
		}

	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;
				tvp5150_write(c, TVP5150_BRIGHT_CTL,
					      decoder->bright >> 8);
			}
			if (decoder->contrast != pic->contrast) {
				/* We want 0 to 255 we get 0-65535 */
				decoder->contrast = pic->contrast;
				tvp5150_write(c, TVP5150_CONTRAST_CTL,
					      decoder->contrast >> 8);
			}
			if (decoder->sat != pic->colour) {
				/* We want 0 to 255 we get 0-65535 */
				decoder->sat = pic->colour;
				tvp5150_write(c, TVP5150_SATURATION_CTL,
					      decoder->contrast >> 8);
			}
			if (decoder->hue != pic->hue) {
				/* We want -128 to 127 we get 0-65535 */
				decoder->hue = pic->hue;
				tvp5150_write(c, TVP5150_HUE_CTL,
					      (decoder->hue - 32768) >> 8);
			}
			break;
		}
	default:
		return -EINVAL;
	}

	return 0;
}

/****************************************************************************
			I2C Client & Driver
 ****************************************************************************/
static struct i2c_driver driver;

static struct i2c_client client_template = {
	.name = "(unset)",
	.driver = &driver,
};

static int tvp5150_detect_client(struct i2c_adapter *adapter,
				 int address, int kind)
{
	struct i2c_client *c;
	struct tvp5150 *core;
	int rv;

	if (debug)
		printk( KERN_INFO
		"tvp5150.c: detecting tvp5150 client on address 0x%x\n",
		address << 1);

	client_template.adapter = adapter;
	client_template.addr = address;

	/* 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;

	c = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
	if (c == 0)
		return -ENOMEM;
	memcpy(c, &client_template, sizeof(struct i2c_client));

	core = kzalloc(sizeof(struct tvp5150), GFP_KERNEL);
	if (core == 0) {
		kfree(c);
		return -ENOMEM;
	}
	i2c_set_clientdata(c, core);

	rv = i2c_attach_client(c);

	core->norm = V4L2_STD_ALL;
	core->input = 2;
	core->enable = 1;
	core->bright = 32768;
	core->contrast = 32768;
	core->hue = 32768;
	core->sat = 32768;

	if (rv) {
		kfree(c);
		kfree(core);
		return rv;
	}

	if (debug > 1)
		dump_reg(c);
	return 0;
}

static int tvp5150_attach_adapter(struct i2c_adapter *adapter)
{
	if (debug)
		printk( KERN_INFO
		"tvp5150.c: starting probe for adapter %s (0x%x)\n",
		adapter->name, adapter->id);
	return i2c_probe(adapter, &addr_data, &tvp5150_detect_client);
}

static int tvp5150_detach_client(struct i2c_client *c)
{
	struct tvp5150 *decoder = i2c_get_clientdata(c);
	int err;

	tvp5150_dbg(1,
		"tvp5150.c: removing tvp5150 adapter on address 0x%x\n",
		c->addr << 1);

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

	kfree(decoder);
	kfree(c);

	return 0;
}

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

static struct i2c_driver driver = {
	.driver = {
		.name = "tvp5150",
	},
	.id = I2C_DRIVERID_TVP5150,

	.attach_adapter = tvp5150_attach_adapter,
	.detach_client = tvp5150_detach_client,

	.command = tvp5150_command,
};

static int __init tvp5150_init(void)
{
	return i2c_add_driver(&driver);
}

static void __exit tvp5150_exit(void)
{
	i2c_del_driver(&driver);
}

module_init(tvp5150_init);
module_exit(tvp5150_exit);