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cpufreq: exynos: Convert exynos-cpufreq to platform driver
To make the driver multiplatform-friendly, unconditional initialization in an initcall is replaced with a platform driver probed only if respective platform device is registered. Tested at: Exynos4210 (TRATS) and Exynos4412 (TRATS2) Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org> Tested-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -303,6 +303,11 @@ void __init exynos_cpuidle_init(void)
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platform_device_register(&exynos_cpuidle);
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}
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void __init exynos_cpufreq_init(void)
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{
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platform_device_register_simple("exynos-cpufreq", -1, NULL, 0);
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}
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void __init exynos_init_late(void)
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{
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if (of_machine_is_compatible("samsung,exynos5440"))
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@ -22,6 +22,7 @@ void exynos_init_io(void);
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void exynos4_restart(enum reboot_mode mode, const char *cmd);
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void exynos5_restart(enum reboot_mode mode, const char *cmd);
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void exynos_cpuidle_init(void);
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void exynos_cpufreq_init(void);
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void exynos_init_late(void);
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void exynos_firmware_init(void);
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@ -22,6 +22,7 @@
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static void __init exynos4_dt_machine_init(void)
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{
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exynos_cpuidle_init();
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exynos_cpufreq_init();
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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}
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@ -44,6 +44,7 @@ static void __init exynos5_dt_machine_init(void)
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}
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exynos_cpuidle_init();
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exynos_cpufreq_init();
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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}
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@ -17,6 +17,7 @@
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#include <linux/regulator/consumer.h>
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#include <linux/cpufreq.h>
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#include <linux/suspend.h>
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#include <linux/platform_device.h>
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#include <plat/cpu.h>
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@ -232,7 +233,7 @@ static struct cpufreq_driver exynos_driver = {
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#endif
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};
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static int __init exynos_cpufreq_init(void)
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static int exynos_cpufreq_probe(struct platform_device *pdev)
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{
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int ret = -EINVAL;
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@ -281,4 +282,12 @@ err_vdd_arm:
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kfree(exynos_info);
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return -EINVAL;
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}
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late_initcall(exynos_cpufreq_init);
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static struct platform_driver exynos_cpufreq_platdrv = {
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.driver = {
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.name = "exynos-cpufreq",
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.owner = THIS_MODULE,
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},
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.probe = exynos_cpufreq_probe,
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};
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module_platform_driver(exynos_cpufreq_platdrv);
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