ARM: OMAP2+: Add minimal 8250 support for GPMC (f2bf0e72) · Commits · 戴 / test

arch/arm/mach-omap2/gpmc.c

+38 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1521,6 +1521,42 @@ err:
	return ret;		return ret;
	}		}

			/*
			* REVISIT: Add timing support from slls644g.pdf
			*/
			static int gpmc_probe_8250(struct platform_device *pdev,
			struct device_node *child)
			{
			struct resource res;
			unsigned long base;
			int ret, cs;

			if (of_property_read_u32(child, "reg", &cs) < 0) {
			dev_err(&pdev->dev, "%s has no 'reg' property\n",
			child->full_name);
			return -ENODEV;
			}

			if (of_address_to_resource(child, 0, &res) < 0) {
			dev_err(&pdev->dev, "%s has malformed 'reg' property\n",
			child->full_name);
			return -ENODEV;
			}

			ret = gpmc_cs_request(cs, resource_size(&res), &base);
			if (ret < 0) {
			dev_err(&pdev->dev, "cannot request GPMC CS %d\n", cs);
			return ret;
			}

			if (of_platform_device_create(child, NULL, &pdev->dev))
			return 0;

			dev_err(&pdev->dev, "failed to create gpmc child %s\n", child->name);

			return -ENODEV;
			}

	static int gpmc_probe_dt(struct platform_device *pdev)		static int gpmc_probe_dt(struct platform_device *pdev)
	{		{
	int ret;		int ret;
	@@ -1564,6 +1600,8 @@ static int gpmc_probe_dt(struct platform_device *pdev)
	else if (of_node_cmp(child->name, "ethernet") == 0 \|\|		else if (of_node_cmp(child->name, "ethernet") == 0 \|\|
	of_node_cmp(child->name, "nor") == 0)		of_node_cmp(child->name, "nor") == 0)
	ret = gpmc_probe_generic_child(pdev, child);		ret = gpmc_probe_generic_child(pdev, child);
			else if (of_node_cmp(child->name, "8250") == 0)
			ret = gpmc_probe_8250(pdev, child);

	if (WARN(ret < 0, "%s: probing gpmc child %s failed\n",		if (WARN(ret < 0, "%s: probing gpmc child %s failed\n",
	__func__, child->full_name))		__func__, child->full_name))

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