cpufreq: qoriq: convert to a platform driver (157f5276) · Commits · 戴 / test

drivers/cpufreq/qoriq-cpufreq.c

+29 −47

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@
		#include <linux/of.h>
		#include <linux/slab.h>
		#include <linux/smp.h>
		#include <linux/platform_device.h>

		/**
		* struct cpu_data
		@@ -29,12 +30,6 @@ struct cpu_data {
		struct cpufreq_frequency_table *table;
		};

		/*
		* Don't use cpufreq on this SoC -- used when the SoC would have otherwise
		* matched a more generic compatible.
		*/
		#define SOC_BLACKLIST 1

		/**
		* struct soc_data - SoC specific data
		* @flags: SOC_xxx
		@@ -264,64 +259,51 @@ static struct cpufreq_driver qoriq_cpufreq_driver = {
		.attr = cpufreq_generic_attr,
		};

		static const struct soc_data blacklist = {
		.flags = SOC_BLACKLIST,
		};

		static const struct of_device_id node_matches[] __initconst = {
		static const struct of_device_id qoriq_cpufreq_blacklist[] = {
		/* e6500 cannot use cpufreq due to erratum A-008083 */
		{ .compatible = "fsl,b4420-clockgen", &blacklist },
		{ .compatible = "fsl,b4860-clockgen", &blacklist },
		{ .compatible = "fsl,t2080-clockgen", &blacklist },
		{ .compatible = "fsl,t4240-clockgen", &blacklist },

		{ .compatible = "fsl,ls1012a-clockgen", },
		{ .compatible = "fsl,ls1021a-clockgen", },
		{ .compatible = "fsl,ls1028a-clockgen", },
		{ .compatible = "fsl,ls1043a-clockgen", },
		{ .compatible = "fsl,ls1046a-clockgen", },
		{ .compatible = "fsl,ls1088a-clockgen", },
		{ .compatible = "fsl,ls2080a-clockgen", },
		{ .compatible = "fsl,lx2160a-clockgen", },
		{ .compatible = "fsl,p4080-clockgen", },
		{ .compatible = "fsl,qoriq-clockgen-1.0", },
		{ .compatible = "fsl,qoriq-clockgen-2.0", },
		{ .compatible = "fsl,b4420-clockgen", },
		{ .compatible = "fsl,b4860-clockgen", },
		{ .compatible = "fsl,t2080-clockgen", },
		{ .compatible = "fsl,t4240-clockgen", },
		{}
		};

		static int __init qoriq_cpufreq_init(void)
		static int qoriq_cpufreq_probe(struct platform_device *pdev)
		{
		int ret;
		struct device_node *np;
		const struct of_device_id *match;
		const struct soc_data *data;

		np = of_find_matching_node(NULL, node_matches);
		if (!np)
		return -ENODEV;

		match = of_match_node(node_matches, np);
		data = match->data;

		of_node_put(np);

		if (data && data->flags & SOC_BLACKLIST)
		np = of_find_matching_node(NULL, qoriq_cpufreq_blacklist);
		if (np) {
		dev_info(&pdev->dev, "Disabling due to erratum A-008083");
		return -ENODEV;
		}

		ret = cpufreq_register_driver(&qoriq_cpufreq_driver);
		if (!ret)
		pr_info("Freescale QorIQ CPU frequency scaling driver\n");

		if (ret)
		return ret;

		dev_info(&pdev->dev, "Freescale QorIQ CPU frequency scaling driver\n");
		return 0;
		}
		module_init(qoriq_cpufreq_init);

		static void __exit qoriq_cpufreq_exit(void)
		static int qoriq_cpufreq_remove(struct platform_device *pdev)
		{
		cpufreq_unregister_driver(&qoriq_cpufreq_driver);

		return 0;
		}
		module_exit(qoriq_cpufreq_exit);

		static struct platform_driver qoriq_cpufreq_platform_driver = {
		.driver = {
		.name = "qoriq-cpufreq",
		},
		.probe = qoriq_cpufreq_probe,
		.remove = qoriq_cpufreq_remove,
		};
		module_platform_driver(qoriq_cpufreq_platform_driver);

		MODULE_ALIAS("platform:qoriq-cpufreq");
		MODULE_LICENSE("GPL");
		MODULE_AUTHOR("Tang Yuantian <Yuantian.Tang@freescale.com>");
		MODULE_DESCRIPTION("cpufreq driver for Freescale QorIQ series SoCs");

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