cpufreq: sh: move cpufreq driver to drivers/cpufreq

This patch moves cpufreq driver of SUPERH architecture to drivers/cpufreq.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

3 files changed, 0 insertions, 210 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 5e859633ce69..06e3163bdc11 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -624,25 +624,7 @@ config SH_CLK_CPG_LEGACY
 endmenu
 
 menu "CPU Frequency scaling"
-
 source "drivers/cpufreq/Kconfig"
-
-config SH_CPU_FREQ
-	tristate "SuperH CPU Frequency driver"
-	depends on CPU_FREQ
-	select CPU_FREQ_TABLE
-	help
-	  This adds the cpufreq driver for SuperH. Any CPU that supports
-	  clock rate rounding through the clock framework can use this
-	  driver. While it will make the kernel slightly larger, this is
-	  harmless for CPUs that don't support rate rounding. The driver
-	  will also generate a notice in the boot log before disabling
-	  itself if the CPU in question is not capable of rate rounding.
-
-	  For details, take a look at <file:Documentation/cpu-freq>.
-
-	  If unsure, say N.
-
 endmenu
 
 source "arch/sh/drivers/Kconfig"
diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index f259b37874e9..261c8bfd75ce 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -31,7 +31,6 @@ obj-$(CONFIG_VSYSCALL)		+= vsyscall/
 obj-$(CONFIG_SMP)		+= smp.o
 obj-$(CONFIG_SH_STANDARD_BIOS)	+= sh_bios.o
 obj-$(CONFIG_KGDB)		+= kgdb.o
-obj-$(CONFIG_SH_CPU_FREQ)	+= cpufreq.o
 obj-$(CONFIG_MODULES)		+= sh_ksyms_$(BITS).o module.o
 obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel.o
 obj-$(CONFIG_CRASH_DUMP)	+= crash_dump.o
diff --git a/arch/sh/kernel/cpufreq.c b/arch/sh/kernel/cpufreq.c
deleted file mode 100644
index 88c8feedf785..000000000000
--- a/arch/sh/kernel/cpufreq.c
+++ /dev/null
@@ -1,191 +0,0 @@
-/*
- * arch/sh/kernel/cpufreq.c
- *
- * cpufreq driver for the SuperH processors.
- *
- * Copyright (C) 2002 - 2012 Paul Mundt
- * Copyright (C) 2002 M. R. Brown
- *
- * Clock framework bits from arch/avr32/mach-at32ap/cpufreq.c
- *
- *   Copyright (C) 2004-2007 Atmel Corporation
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#define pr_fmt(fmt) "cpufreq: " fmt
-
-#include <linux/types.h>
-#include <linux/cpufreq.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/cpumask.h>
-#include <linux/cpu.h>
-#include <linux/smp.h>
-#include <linux/sched.h>	/* set_cpus_allowed() */
-#include <linux/clk.h>
-#include <linux/percpu.h>
-#include <linux/sh_clk.h>
-
-static DEFINE_PER_CPU(struct clk, sh_cpuclk);
-
-static unsigned int sh_cpufreq_get(unsigned int cpu)
-{
-	return (clk_get_rate(&per_cpu(sh_cpuclk, cpu)) + 500) / 1000;
-}
-
-/*
- * Here we notify other drivers of the proposed change and the final change.
- */
-static int sh_cpufreq_target(struct cpufreq_policy *policy,
-			     unsigned int target_freq,
-			     unsigned int relation)
-{
-	unsigned int cpu = policy->cpu;
-	struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
-	cpumask_t cpus_allowed;
-	struct cpufreq_freqs freqs;
-	struct device *dev;
-	long freq;
-
-	cpus_allowed = current->cpus_allowed;
-	set_cpus_allowed_ptr(current, cpumask_of(cpu));
-
-	BUG_ON(smp_processor_id() != cpu);
-
-	dev = get_cpu_device(cpu);
-
-	/* Convert target_freq from kHz to Hz */
-	freq = clk_round_rate(cpuclk, target_freq * 1000);
-
-	if (freq < (policy->min * 1000) || freq > (policy->max * 1000))
-		return -EINVAL;
-
-	dev_dbg(dev, "requested frequency %u Hz\n", target_freq * 1000);
-
-	freqs.old	= sh_cpufreq_get(cpu);
-	freqs.new	= (freq + 500) / 1000;
-	freqs.flags	= 0;
-
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
-	set_cpus_allowed_ptr(current, &cpus_allowed);
-	clk_set_rate(cpuclk, freq);
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
-
-	dev_dbg(dev, "set frequency %lu Hz\n", freq);
-
-	return 0;
-}
-
-static int sh_cpufreq_verify(struct cpufreq_policy *policy)
-{
-	struct clk *cpuclk = &per_cpu(sh_cpuclk, policy->cpu);
-	struct cpufreq_frequency_table *freq_table;
-
-	freq_table = cpuclk->nr_freqs ? cpuclk->freq_table : NULL;
-	if (freq_table)
-		return cpufreq_frequency_table_verify(policy, freq_table);
-
-	cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
-				     policy->cpuinfo.max_freq);
-
-	policy->min = (clk_round_rate(cpuclk, 1) + 500) / 1000;
-	policy->max = (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
-
-	cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
-				     policy->cpuinfo.max_freq);
-
-	return 0;
-}
-
-static int sh_cpufreq_cpu_init(struct cpufreq_policy *policy)
-{
-	unsigned int cpu = policy->cpu;
-	struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
-	struct cpufreq_frequency_table *freq_table;
-	struct device *dev;
-
-	dev = get_cpu_device(cpu);
-
-	cpuclk = clk_get(dev, "cpu_clk");
-	if (IS_ERR(cpuclk)) {
-		dev_err(dev, "couldn't get CPU clk\n");
-		return PTR_ERR(cpuclk);
-	}
-
-	policy->cur = sh_cpufreq_get(cpu);
-
-	freq_table = cpuclk->nr_freqs ? cpuclk->freq_table : NULL;
-	if (freq_table) {
-		int result;
-
-		result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
-		if (!result)
-			cpufreq_frequency_table_get_attr(freq_table, cpu);
-	} else {
-		dev_notice(dev, "no frequency table found, falling back "
-			   "to rate rounding.\n");
-
-		policy->min = policy->cpuinfo.min_freq =
-			(clk_round_rate(cpuclk, 1) + 500) / 1000;
-		policy->max = policy->cpuinfo.max_freq =
-			(clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
-	}
-
-	policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
-
-	dev_info(dev, "CPU Frequencies - Minimum %u.%03u MHz, "
-	       "Maximum %u.%03u MHz.\n",
-	       policy->min / 1000, policy->min % 1000,
-	       policy->max / 1000, policy->max % 1000);
-
-	return 0;
-}
-
-static int sh_cpufreq_cpu_exit(struct cpufreq_policy *policy)
-{
-	unsigned int cpu = policy->cpu;
-	struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
-
-	cpufreq_frequency_table_put_attr(cpu);
-	clk_put(cpuclk);
-
-	return 0;
-}
-
-static struct freq_attr *sh_freq_attr[] = {
-	&cpufreq_freq_attr_scaling_available_freqs,
-	NULL,
-};
-
-static struct cpufreq_driver sh_cpufreq_driver = {
-	.owner		= THIS_MODULE,
-	.name		= "sh",
-	.get		= sh_cpufreq_get,
-	.target		= sh_cpufreq_target,
-	.verify		= sh_cpufreq_verify,
-	.init		= sh_cpufreq_cpu_init,
-	.exit		= sh_cpufreq_cpu_exit,
-	.attr		= sh_freq_attr,
-};
-
-static int __init sh_cpufreq_module_init(void)
-{
-	pr_notice("SuperH CPU frequency driver.\n");
-	return cpufreq_register_driver(&sh_cpufreq_driver);
-}
-
-static void __exit sh_cpufreq_module_exit(void)
-{
-	cpufreq_unregister_driver(&sh_cpufreq_driver);
-}
-
-module_init(sh_cpufreq_module_init);
-module_exit(sh_cpufreq_module_exit);
-
-MODULE_AUTHOR("Paul Mundt <lethal@linux-sh.org>");
-MODULE_DESCRIPTION("cpufreq driver for SuperH");
-MODULE_LICENSE("GPL");