C++ (Cpp) fimc_is_setup_clocksの例

コード例 #1

ファイル: fimc-is.c プロジェクト: bjayesh/chandra

static int fimc_is_runtime_resume(struct device *dev)
{
	struct fimc_is *is = dev_get_drvdata(dev);
	int ret;

	ret = fimc_is_setup_clocks(is);
	if (ret)
		return ret;

	return fimc_is_enable_clocks(is);
}

コード例 #2

static int fimc_is_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct fimc_is *is;
	struct resource res;
	struct device_node *node;
	int ret;

	is = devm_kzalloc(&pdev->dev, sizeof(*is), GFP_KERNEL);
	if (!is)
		return -ENOMEM;

	is->pdev = pdev;
	is->isp.pdev = pdev;

	init_waitqueue_head(&is->irq_queue);
	spin_lock_init(&is->slock);
	mutex_init(&is->lock);

	ret = of_address_to_resource(dev->of_node, 0, &res);
	if (ret < 0)
		return ret;

	is->regs = devm_ioremap_resource(dev, &res);
	if (IS_ERR(is->regs))
		return PTR_ERR(is->regs);

	node = of_get_child_by_name(dev->of_node, "pmu");
	if (!node)
		return -ENODEV;

	is->pmu_regs = of_iomap(node, 0);
	if (!is->pmu_regs)
		return -ENOMEM;

	is->irq = irq_of_parse_and_map(dev->of_node, 0);
	if (is->irq < 0) {
		dev_err(dev, "no irq found\n");
		return is->irq;
	}

	ret = fimc_is_get_clocks(is);
	if (ret < 0)
		return ret;

	platform_set_drvdata(pdev, is);

	ret = request_irq(is->irq, fimc_is_irq_handler, 0, dev_name(dev), is);
	if (ret < 0) {
		dev_err(dev, "irq request failed\n");
		goto err_clk;
	}
	pm_runtime_enable(dev);
	/*
	 * Enable only the ISP power domain, keep FIMC-IS clocks off until
	 * the whole clock tree is configured. The ISP power domain needs
	 * be active in order to acces any CMU_ISP clock registers.
	 */
	ret = pm_runtime_get_sync(dev);
	if (ret < 0)
		goto err_irq;

	ret = fimc_is_setup_clocks(is);
	pm_runtime_put_sync(dev);

	if (ret < 0)
		goto err_irq;

	is->clk_init = true;

	is->alloc_ctx = vb2_dma_contig_init_ctx(dev);
	if (IS_ERR(is->alloc_ctx)) {
		ret = PTR_ERR(is->alloc_ctx);
		goto err_irq;
	}
	/*
	 * Register FIMC-IS V4L2 subdevs to this driver. The video nodes
	 * will be created within the subdev's registered() callback.
	 */
	ret = fimc_is_register_subdevs(is);
	if (ret < 0)
		goto err_vb;

	ret = fimc_is_debugfs_create(is);
	if (ret < 0)
		goto err_sd;

	ret = fimc_is_request_firmware(is, FIMC_IS_FW_FILENAME);
	if (ret < 0)
		goto err_dfs;

	dev_dbg(dev, "FIMC-IS registered successfully\n");
	return 0;

err_dfs:
	fimc_is_debugfs_remove(is);
err_vb:
	vb2_dma_contig_cleanup_ctx(is->alloc_ctx);
err_sd:
	fimc_is_unregister_subdevs(is);
err_irq:
	free_irq(is->irq, is);
err_clk:
	fimc_is_put_clocks(is);
	return ret;
}