C++ (Cpp) tegra_das_debug_addの例

コード例 #1

ファイル: tegra_das.c プロジェクト: CSCLOG/beaglebone

static int __devinit tegra_das_probe(struct platform_device *pdev)
{
	struct resource *res, *region;
	int ret = 0;

	if (das)
		return -ENODEV;

	das = kzalloc(sizeof(struct tegra_das), GFP_KERNEL);
	if (!das) {
		dev_err(&pdev->dev, "Can't allocate tegra_das\n");
		ret = -ENOMEM;
		goto exit;
	}
	das->dev = &pdev->dev;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "No memory resource\n");
		ret = -ENODEV;
		goto err_free;
	}

	region = request_mem_region(res->start, resource_size(res),
					pdev->name);
	if (!region) {
		dev_err(&pdev->dev, "Memory region already claimed\n");
		ret = -EBUSY;
		goto err_free;
	}

	das->regs = ioremap(res->start, resource_size(res));
	if (!das->regs) {
		dev_err(&pdev->dev, "ioremap failed\n");
		ret = -ENOMEM;
		goto err_release;
	}

	tegra_das_debug_add(das);

	platform_set_drvdata(pdev, das);

	return 0;

err_release:
	release_mem_region(res->start, resource_size(res));
err_free:
	kfree(das);
	das = 0;
exit:
	return ret;
}

コード例 #2

static int __devinit tegra_das_probe(struct platform_device *pdev)
{
	struct resource *res, *region;
	int ret = 0;

	if (das)
		return -ENODEV;

	das = devm_kzalloc(&pdev->dev, sizeof(struct tegra_das), GFP_KERNEL);
	if (!das) {
		dev_err(&pdev->dev, "Can't allocate tegra_das\n");
		ret = -ENOMEM;
		goto err;
	}
	das->dev = &pdev->dev;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "No memory resource\n");
		ret = -ENODEV;
		goto err;
	}

	region = devm_request_mem_region(&pdev->dev, res->start,
					 resource_size(res), pdev->name);
	if (!region) {
		dev_err(&pdev->dev, "Memory region already claimed\n");
		ret = -EBUSY;
		goto err;
	}

	das->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
	if (!das->regs) {
		dev_err(&pdev->dev, "ioremap failed\n");
		ret = -ENOMEM;
		goto err;
	}

	ret = tegra_das_connect_dap_to_dac(TEGRA_DAS_DAP_ID_1,
					   TEGRA_DAS_DAP_SEL_DAC1);
	if (ret) {
		dev_err(&pdev->dev, "Can't set up DAS DAP connection\n");
		goto err;
	}
	ret = tegra_das_connect_dac_to_dap(TEGRA_DAS_DAC_ID_1,
					   TEGRA_DAS_DAC_SEL_DAP1);
	if (ret) {
		dev_err(&pdev->dev, "Can't set up DAS DAC connection\n");
		goto err;
	}

	tegra_das_debug_add(das);

	platform_set_drvdata(pdev, das);

	return 0;

err:
	das = NULL;
	return ret;
}