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authorViresh Kumar <viresh.kumar@linaro.org>2013-04-04 12:54:23 +0000
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-04-10 13:19:26 +0200
commit73cc9c8cac3f86ae4efebf001b68dcecc00b0017 (patch)
treeea771271a3307e73094cec11c78549b37d91ac7a /arch/unicore32
parent7258267e56325d41f468eb650b6c23f697201645 (diff)
downloadlinux-linaro-stable-73cc9c8cac3f86ae4efebf001b68dcecc00b0017.tar.gz
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/unicore32')
-rw-r--r--arch/unicore32/kernel/Makefile1
-rw-r--r--arch/unicore32/kernel/cpu-ucv2.c92
2 files changed, 0 insertions, 93 deletions
diff --git a/arch/unicore32/kernel/Makefile b/arch/unicore32/kernel/Makefile
index fa497e0efe5a..607a72f2ae35 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 ba5a71ce2d71..000000000000
--- 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);