C++ (Cpp) lm3554_g_flash_status Examples

Example #1

static int lm3554_detect(struct i2c_client *client)
{
	s32 status;
	struct i2c_adapter *adapter = client->adapter;
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	struct lm3554_priv *p_lm3554_priv = to_lm3554_priv(sd);
	struct camera_flash_platform_data *pdata = p_lm3554_priv->platform_data;
	int ret;

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
		dev_err(&client->dev, "lm3554_detect i2c error\n");
		return -ENODEV;
	}

	lm3554_hw_reset(client);

	ret = set_gpio_output(pdata->gpio_strobe, "flash", 0);
	if (ret < 0)
		goto fail;

	ret = set_gpio_output(pdata->gpio_torch, "torch", 0);
	if (ret < 0)
		goto fail;

	/* Set to TX2 mode, then ENVM/TX2 pin is a power
	 * amplifier sync input:
	 * ENVM/TX pin asserted, flash forced into torch;
	 * ENVM/TX pin desserted, flash set back;
	 */
	ret = set_reg_field(sd, &envm_tx2, 1);
	if (ret < 0)
		goto fail;

	ret = set_reg_field(sd, &tx2_polarity, 0);
	if (ret < 0)
		goto fail;

	/* set peak current limit to be 1000mA */
	ret = set_reg_field(sd, &current_limit, 0);
	if (ret < 0)
		goto fail;

	/* clear the flags register */
	ret = lm3554_g_flash_status(sd, &status);
	if (ret < 0)
		goto fail;

	dev_dbg(&client->dev, "Successfully detected lm3554 LED flash\n");
	return 0;

fail:
	dev_err(&client->dev, "gpio request/direction_output fail");
	return ret;
}

Example #2

File: atomisp-lm3554.c Project: ReneNyffenegger/linux

static int lm3554_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
	struct lm3554 *dev =
	    container_of(ctrl->handler, struct lm3554, ctrl_handler);
	int ret = 0;

	switch (ctrl->id) {
	case V4L2_CID_FLASH_TIMEOUT:
		ret = lm3554_g_flash_timeout(&dev->sd, &ctrl->val);
		break;
	case V4L2_CID_FLASH_INTENSITY:
		ret = lm3554_g_flash_intensity(&dev->sd, &ctrl->val);
		break;
	case V4L2_CID_FLASH_TORCH_INTENSITY:
		ret = lm3554_g_torch_intensity(&dev->sd, &ctrl->val);
		break;
	case V4L2_CID_FLASH_INDICATOR_INTENSITY:
		ret = lm3554_g_indicator_intensity(&dev->sd, &ctrl->val);
		break;
	case V4L2_CID_FLASH_MODE:
		ret = lm3554_g_flash_mode(&dev->sd, &ctrl->val);
		break;
	case V4L2_CID_FLASH_STATUS:
		ret = lm3554_g_flash_status(&dev->sd, &ctrl->val);
		break;
#ifndef CSS15
	case V4L2_CID_FLASH_STATUS_REGISTER:
		ret = lm3554_g_flash_status_register(&dev->sd, &ctrl->val);
		break;
#endif
	default:
		ret = -EINVAL;
	}

	return ret;
}