diff options
| -rw-r--r-- | drivers/cpufreq/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/cpufreq/Makefile | 1 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq-dt-platdev.c | 32 |
3 files changed, 43 insertions, 0 deletions
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index 5d74826..b38d502 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -225,6 +225,7 @@ config CPUFREQ_DT depends on HAVE_CLK && OF # if CPU_THERMAL is on and THERMAL=m, CPUFREQ_DT cannot be =y: depends on !CPU_THERMAL || THERMAL + select CPUFREQ_DT_PLATDEV select PM_OPP help This adds a generic DT based cpufreq driver for frequency management. @@ -233,6 +234,15 @@ config CPUFREQ_DT If in doubt, say N. +config CPUFREQ_DT_PLATDEV + bool + help + This adds a generic DT based cpufreq platdev driver for frequency + management. This creates a 'cpufreq-dt' platform device, on the + supported platforms. + + If in doubt, say N. + if X86 source "drivers/cpufreq/Kconfig.x86" endif diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile index 6d11867..d7b646c 100644 --- a/drivers/cpufreq/Makefile +++ b/drivers/cpufreq/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_CPU_FREQ_GOV_COMMON) += cpufreq_governor.o obj-$(CONFIG_CPU_FREQ_GOV_ATTR_SET) += cpufreq_governor_attr_set.o obj-$(CONFIG_CPUFREQ_DT) += cpufreq-dt.o +obj-$(CONFIG_CPUFREQ_DT_PLATDEV) += cpufreq-dt-platdev.o ################################################################################## # x86 drivers. diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c new file mode 100644 index 0000000..2a35324 --- /dev/null +++ b/drivers/cpufreq/cpufreq-dt-platdev.c @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2016 Linaro. + * Viresh Kumar <viresh.kumar@linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/err.h> +#include <linux/of.h> +#include <linux/platform_device.h> + +static const struct of_device_id machines[] = { +}; + +static int __init cpufreq_dt_platdev_init(void) +{ + struct device_node *np = of_find_node_by_path("/"); + + if (!np) + return -ENODEV; + + if (!of_match_node(machines, np)) + return -ENODEV; + + of_node_put(of_root); + + return PTR_ERR_OR_ZERO(platform_device_register_simple("cpufreq-dt", -1, + NULL, 0)); +} +device_initcall(cpufreq_dt_platdev_init); |