diff options
author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-04-04 12:54:23 +0000 |
---|---|---|
committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-04-10 13:19:26 +0200 |
commit | 73cc9c8cac3f86ae4efebf001b68dcecc00b0017 (patch) | |
tree | ea771271a3307e73094cec11c78549b37d91ac7a /arch | |
parent | 7258267e56325d41f468eb650b6c23f697201645 (diff) |
cpufreq: unicore2: move cpufreq driver to drivers/cpufreq
This patch moves cpufreq driver of UNICORE-2 architecture to drivers/cpufreq.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/unicore32/kernel/Makefile | 1 | ||||
-rw-r--r-- | arch/unicore32/kernel/cpu-ucv2.c | 92 |
2 files changed, 0 insertions, 93 deletions
diff --git a/arch/unicore32/kernel/Makefile b/arch/unicore32/kernel/Makefile index fa497e0efe5..607a72f2ae3 100644 --- a/arch/unicore32/kernel/Makefile +++ b/arch/unicore32/kernel/Makefile @@ -9,7 +9,6 @@ obj-y += setup.o signal.o sys.o stacktrace.o traps.o obj-$(CONFIG_MODULES) += ksyms.o module.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o -obj-$(CONFIG_CPU_FREQ) += cpu-ucv2.o obj-$(CONFIG_UNICORE_FPU_F64) += fpu-ucf64.o # obj-y for architecture PKUnity v3 diff --git a/arch/unicore32/kernel/cpu-ucv2.c b/arch/unicore32/kernel/cpu-ucv2.c deleted file mode 100644 index ba5a71ce2d7..00000000000 --- a/arch/unicore32/kernel/cpu-ucv2.c +++ /dev/null @@ -1,92 +0,0 @@ -/* - * linux/arch/unicore32/kernel/cpu-ucv2.c: clock scaling for the UniCore-II - * - * Code specific to PKUnity SoC and UniCore ISA - * - * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn> - * Copyright (C) 2001-2010 Guan Xuetao - * - * 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/kernel.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/clk.h> -#include <linux/cpufreq.h> - -#include <mach/hardware.h> - -static struct cpufreq_driver ucv2_driver; - -/* make sure that only the "userspace" governor is run - * -- anything else wouldn't make sense on this platform, anyway. - */ -int ucv2_verify_speed(struct cpufreq_policy *policy) -{ - if (policy->cpu) - return -EINVAL; - - cpufreq_verify_within_limits(policy, - policy->cpuinfo.min_freq, policy->cpuinfo.max_freq); - - return 0; -} - -static unsigned int ucv2_getspeed(unsigned int cpu) -{ - struct clk *mclk = clk_get(NULL, "MAIN_CLK"); - - if (cpu) - return 0; - return clk_get_rate(mclk)/1000; -} - -static int ucv2_target(struct cpufreq_policy *policy, - unsigned int target_freq, - unsigned int relation) -{ - unsigned int cur = ucv2_getspeed(0); - struct cpufreq_freqs freqs; - struct clk *mclk = clk_get(NULL, "MAIN_CLK"); - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - - if (!clk_set_rate(mclk, target_freq * 1000)) { - freqs.old = cur; - freqs.new = target_freq; - } - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - - return 0; -} - -static int __init ucv2_cpu_init(struct cpufreq_policy *policy) -{ - if (policy->cpu != 0) - return -EINVAL; - policy->cur = ucv2_getspeed(0); - policy->min = policy->cpuinfo.min_freq = 250000; - policy->max = policy->cpuinfo.max_freq = 1000000; - policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL; - return 0; -} - -static struct cpufreq_driver ucv2_driver = { - .flags = CPUFREQ_STICKY, - .verify = ucv2_verify_speed, - .target = ucv2_target, - .get = ucv2_getspeed, - .init = ucv2_cpu_init, - .name = "UniCore-II", -}; - -static int __init ucv2_cpufreq_init(void) -{ - return cpufreq_register_driver(&ucv2_driver); -} - -arch_initcall(ucv2_cpufreq_init); |