cpufreq: AVR32: move cpufreq driver to drivers/cpufreq

This patch moves cpufreq driver of AVR32 based at32ap platform to
drivers/cpufreq.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 0 insertions, 123 deletions

diff --git a/arch/avr32/mach-at32ap/cpufreq.c b/arch/avr32/mach-at32ap/cpufreq.c
deleted file mode 100644
index 654488723cb..00000000000
--- a/arch/avr32/mach-at32ap/cpufreq.c
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * Copyright (C) 2004-2007 Atmel Corporation
- *
- * Based on MIPS implementation arch/mips/kernel/time.c
- *   Copyright 2001 MontaVista Software Inc.
- *
- * 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.
- */
-
-/*#define DEBUG*/
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/cpufreq.h>
-#include <linux/io.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/export.h>
-
-static struct clk *cpuclk;
-
-static int at32_verify_speed(struct cpufreq_policy *policy)
-{
-	if (policy->cpu != 0)
-		return -EINVAL;
-
-	cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
-			policy->cpuinfo.max_freq);
-	return 0;
-}
-
-static unsigned int at32_get_speed(unsigned int cpu)
-{
-	/* No SMP support */
-	if (cpu)
-		return 0;
-	return (unsigned int)((clk_get_rate(cpuclk) + 500) / 1000);
-}
-
-static unsigned int	ref_freq;
-static unsigned long	loops_per_jiffy_ref;
-
-static int at32_set_target(struct cpufreq_policy *policy,
-			  unsigned int target_freq,
-			  unsigned int relation)
-{
-	struct cpufreq_freqs freqs;
-	long freq;
-
-	/* Convert target_freq from kHz to Hz */
-	freq = clk_round_rate(cpuclk, target_freq * 1000);
-
-	/* Check if policy->min <= new_freq <= policy->max */
-	if(freq < (policy->min * 1000) || freq > (policy->max * 1000))
-		return -EINVAL;
-
-	pr_debug("cpufreq: requested frequency %u Hz\n", target_freq * 1000);
-
-	freqs.old = at32_get_speed(0);
-	freqs.new = (freq + 500) / 1000;
-	freqs.flags = 0;
-
-	if (!ref_freq) {
-		ref_freq = freqs.old;
-		loops_per_jiffy_ref = boot_cpu_data.loops_per_jiffy;
-	}
-
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
-	if (freqs.old < freqs.new)
-		boot_cpu_data.loops_per_jiffy = cpufreq_scale(
-				loops_per_jiffy_ref, ref_freq, freqs.new);
-	clk_set_rate(cpuclk, freq);
-	if (freqs.new < freqs.old)
-		boot_cpu_data.loops_per_jiffy = cpufreq_scale(
-				loops_per_jiffy_ref, ref_freq, freqs.new);
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
-
-	pr_debug("cpufreq: set frequency %lu Hz\n", freq);
-
-	return 0;
-}
-
-static int __init at32_cpufreq_driver_init(struct cpufreq_policy *policy)
-{
-	if (policy->cpu != 0)
-		return -EINVAL;
-
-	cpuclk = clk_get(NULL, "cpu");
-	if (IS_ERR(cpuclk)) {
-		pr_debug("cpufreq: could not get CPU clk\n");
-		return PTR_ERR(cpuclk);
-	}
-
-	policy->cpuinfo.min_freq = (clk_round_rate(cpuclk, 1) + 500) / 1000;
-	policy->cpuinfo.max_freq = (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
-	policy->cpuinfo.transition_latency = 0;
-	policy->cur = at32_get_speed(0);
-	policy->min = policy->cpuinfo.min_freq;
-	policy->max = policy->cpuinfo.max_freq;
-
-	printk("cpufreq: AT32AP CPU frequency driver\n");
-
-	return 0;
-}
-
-static struct cpufreq_driver at32_driver = {
-	.name		= "at32ap",
-	.owner		= THIS_MODULE,
-	.init		= at32_cpufreq_driver_init,
-	.verify		= at32_verify_speed,
-	.target		= at32_set_target,
-	.get		= at32_get_speed,
-	.flags		= CPUFREQ_STICKY,
-};
-
-static int __init at32_cpufreq_init(void)
-{
-	return cpufreq_register_driver(&at32_driver);
-}
-late_initcall(at32_cpufreq_init);