cpufreq: sparc: move cpufreq driver to drivers/cpufreq

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

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 0 insertions, 269 deletions

diff --git a/arch/sparc/kernel/us3_cpufreq.c b/arch/sparc/kernel/us3_cpufreq.c
deleted file mode 100644
index c71ee142347a..000000000000
--- a/arch/sparc/kernel/us3_cpufreq.c
+++ /dev/null
@@ -1,269 +0,0 @@
-/* us3_cpufreq.c: UltraSPARC-III cpu frequency support
- *
- * Copyright (C) 2003 David S. Miller (davem@redhat.com)
- *
- * Many thanks to Dominik Brodowski for fixing up the cpufreq
- * infrastructure in order to make this driver easier to implement.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/cpufreq.h>
-#include <linux/threads.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-
-#include <asm/head.h>
-#include <asm/timer.h>
-
-static struct cpufreq_driver *cpufreq_us3_driver;
-
-struct us3_freq_percpu_info {
-	struct cpufreq_frequency_table table[4];
-};
-
-/* Indexed by cpu number. */
-static struct us3_freq_percpu_info *us3_freq_table;
-
-/* UltraSPARC-III has three dividers: 1, 2, and 32.  These are controlled
- * in the Safari config register.
- */
-#define SAFARI_CFG_DIV_1	0x0000000000000000UL
-#define SAFARI_CFG_DIV_2	0x0000000040000000UL
-#define SAFARI_CFG_DIV_32	0x0000000080000000UL
-#define SAFARI_CFG_DIV_MASK	0x00000000C0000000UL
-
-static unsigned long read_safari_cfg(void)
-{
-	unsigned long ret;
-
-	__asm__ __volatile__("ldxa	[%%g0] %1, %0"
-			     : "=&r" (ret)
-			     : "i" (ASI_SAFARI_CONFIG));
-	return ret;
-}
-
-static void write_safari_cfg(unsigned long val)
-{
-	__asm__ __volatile__("stxa	%0, [%%g0] %1\n\t"
-			     "membar	#Sync"
-			     : /* no outputs */
-			     : "r" (val), "i" (ASI_SAFARI_CONFIG)
-			     : "memory");
-}
-
-static unsigned long get_current_freq(unsigned int cpu, unsigned long safari_cfg)
-{
-	unsigned long clock_tick = sparc64_get_clock_tick(cpu) / 1000;
-	unsigned long ret;
-
-	switch (safari_cfg & SAFARI_CFG_DIV_MASK) {
-	case SAFARI_CFG_DIV_1:
-		ret = clock_tick / 1;
-		break;
-	case SAFARI_CFG_DIV_2:
-		ret = clock_tick / 2;
-		break;
-	case SAFARI_CFG_DIV_32:
-		ret = clock_tick / 32;
-		break;
-	default:
-		BUG();
-	}
-
-	return ret;
-}
-
-static unsigned int us3_freq_get(unsigned int cpu)
-{
-	cpumask_t cpus_allowed;
-	unsigned long reg;
-	unsigned int ret;
-
-	cpumask_copy(&cpus_allowed, tsk_cpus_allowed(current));
-	set_cpus_allowed_ptr(current, cpumask_of(cpu));
-
-	reg = read_safari_cfg();
-	ret = get_current_freq(cpu, reg);
-
-	set_cpus_allowed_ptr(current, &cpus_allowed);
-
-	return ret;
-}
-
-static void us3_set_cpu_divider_index(struct cpufreq_policy *policy,
-		unsigned int index)
-{
-	unsigned int cpu = policy->cpu;
-	unsigned long new_bits, new_freq, reg;
-	cpumask_t cpus_allowed;
-	struct cpufreq_freqs freqs;
-
-	cpumask_copy(&cpus_allowed, tsk_cpus_allowed(current));
-	set_cpus_allowed_ptr(current, cpumask_of(cpu));
-
-	new_freq = sparc64_get_clock_tick(cpu) / 1000;
-	switch (index) {
-	case 0:
-		new_bits = SAFARI_CFG_DIV_1;
-		new_freq /= 1;
-		break;
-	case 1:
-		new_bits = SAFARI_CFG_DIV_2;
-		new_freq /= 2;
-		break;
-	case 2:
-		new_bits = SAFARI_CFG_DIV_32;
-		new_freq /= 32;
-		break;
-
-	default:
-		BUG();
-	}
-
-	reg = read_safari_cfg();
-
-	freqs.old = get_current_freq(cpu, reg);
-	freqs.new = new_freq;
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
-
-	reg &= ~SAFARI_CFG_DIV_MASK;
-	reg |= new_bits;
-	write_safari_cfg(reg);
-
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
-
-	set_cpus_allowed_ptr(current, &cpus_allowed);
-}
-
-static int us3_freq_target(struct cpufreq_policy *policy,
-			  unsigned int target_freq,
-			  unsigned int relation)
-{
-	unsigned int new_index = 0;
-
-	if (cpufreq_frequency_table_target(policy,
-					   &us3_freq_table[policy->cpu].table[0],
-					   target_freq,
-					   relation,
-					   &new_index))
-		return -EINVAL;
-
-	us3_set_cpu_divider_index(policy, new_index);
-
-	return 0;
-}
-
-static int us3_freq_verify(struct cpufreq_policy *policy)
-{
-	return cpufreq_frequency_table_verify(policy,
-					      &us3_freq_table[policy->cpu].table[0]);
-}
-
-static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
-{
-	unsigned int cpu = policy->cpu;
-	unsigned long clock_tick = sparc64_get_clock_tick(cpu) / 1000;
-	struct cpufreq_frequency_table *table =
-		&us3_freq_table[cpu].table[0];
-
-	table[0].index = 0;
-	table[0].frequency = clock_tick / 1;
-	table[1].index = 1;
-	table[1].frequency = clock_tick / 2;
-	table[2].index = 2;
-	table[2].frequency = clock_tick / 32;
-	table[3].index = 0;
-	table[3].frequency = CPUFREQ_TABLE_END;
-
-	policy->cpuinfo.transition_latency = 0;
-	policy->cur = clock_tick;
-
-	return cpufreq_frequency_table_cpuinfo(policy, table);
-}
-
-static int us3_freq_cpu_exit(struct cpufreq_policy *policy)
-{
-	if (cpufreq_us3_driver)
-		us3_set_cpu_divider_index(policy, 0);
-
-	return 0;
-}
-
-static int __init us3_freq_init(void)
-{
-	unsigned long manuf, impl, ver;
-	int ret;
-
-	if (tlb_type != cheetah && tlb_type != cheetah_plus)
-		return -ENODEV;
-
-	__asm__("rdpr %%ver, %0" : "=r" (ver));
-	manuf = ((ver >> 48) & 0xffff);
-	impl  = ((ver >> 32) & 0xffff);
-
-	if (manuf == CHEETAH_MANUF &&
-	    (impl == CHEETAH_IMPL ||
-	     impl == CHEETAH_PLUS_IMPL ||
-	     impl == JAGUAR_IMPL ||
-	     impl == PANTHER_IMPL)) {
-		struct cpufreq_driver *driver;
-
-		ret = -ENOMEM;
-		driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
-		if (!driver)
-			goto err_out;
-
-		us3_freq_table = kzalloc(
-			(NR_CPUS * sizeof(struct us3_freq_percpu_info)),
-			GFP_KERNEL);
-		if (!us3_freq_table)
-			goto err_out;
-
-		driver->init = us3_freq_cpu_init;
-		driver->verify = us3_freq_verify;
-		driver->target = us3_freq_target;
-		driver->get = us3_freq_get;
-		driver->exit = us3_freq_cpu_exit;
-		driver->owner = THIS_MODULE,
-		strcpy(driver->name, "UltraSPARC-III");
-
-		cpufreq_us3_driver = driver;
-		ret = cpufreq_register_driver(driver);
-		if (ret)
-			goto err_out;
-
-		return 0;
-
-err_out:
-		if (driver) {
-			kfree(driver);
-			cpufreq_us3_driver = NULL;
-		}
-		kfree(us3_freq_table);
-		us3_freq_table = NULL;
-		return ret;
-	}
-
-	return -ENODEV;
-}
-
-static void __exit us3_freq_exit(void)
-{
-	if (cpufreq_us3_driver) {
-		cpufreq_unregister_driver(cpufreq_us3_driver);
-		kfree(cpufreq_us3_driver);
-		cpufreq_us3_driver = NULL;
-		kfree(us3_freq_table);
-		us3_freq_table = NULL;
-	}
-}
-
-MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
-MODULE_DESCRIPTION("cpufreq driver for UltraSPARC-III");
-MODULE_LICENSE("GPL");
-
-module_init(us3_freq_init);
-module_exit(us3_freq_exit);