cpufreq: remove at32ap-cpufreq

Since AVR32 arch was removed, at32ap-cpufreq is useless.
Remove this driver.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/Kconfig

@@ -239,16 +239,6 @@ if PPC32 || PPC64
 source "drivers/cpufreq/Kconfig.powerpc"
 endif
 
-if AVR32
-config AVR32_AT32AP_CPUFREQ
-	bool "CPU frequency driver for AT32AP"
-	depends on PLATFORM_AT32AP
-	default n
-	help
-	  This enables the CPU frequency driver for AT32AP processors.
-	  If in doubt, say N.
-endif
-
 if IA64
 config IA64_ACPI_CPUFREQ
 	tristate "ACPI Processor P-States driver"

drivers/cpufreq/Makefile

@@ -100,7 +100,6 @@ obj-$(CONFIG_POWERNV_CPUFREQ)		+= powernv-cpufreq.o
 
 ##################################################################################
 # Other platform drivers
-obj-$(CONFIG_AVR32_AT32AP_CPUFREQ)	+= at32ap-cpufreq.o
 obj-$(CONFIG_BFIN_CPU_FREQ)		+= blackfin-cpufreq.o
 obj-$(CONFIG_BMIPS_CPUFREQ)		+= bmips-cpufreq.o
 obj-$(CONFIG_CRIS_MACH_ARTPEC3)		+= cris-artpec3-cpufreq.o

drivers/cpufreq/at32ap-cpufreq.c

-/*
- * 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>
-#include <linux/slab.h>
-
-static struct cpufreq_frequency_table *freq_table;
-
-static unsigned int	ref_freq;
-static unsigned long	loops_per_jiffy_ref;
-
-static int at32_set_target(struct cpufreq_policy *policy, unsigned int index)
-{
-	unsigned int old_freq, new_freq;
-
-	old_freq = policy->cur;
-	new_freq = freq_table[index].frequency;
-
-	if (!ref_freq) {
-		ref_freq = old_freq;
-		loops_per_jiffy_ref = boot_cpu_data.loops_per_jiffy;
-	}
-
-	if (old_freq < new_freq)
-		boot_cpu_data.loops_per_jiffy = cpufreq_scale(
-				loops_per_jiffy_ref, ref_freq, new_freq);
-	clk_set_rate(policy->clk, new_freq * 1000);
-	if (new_freq < old_freq)
-		boot_cpu_data.loops_per_jiffy = cpufreq_scale(
-				loops_per_jiffy_ref, ref_freq, new_freq);
-
-	return 0;
-}
-
-static int at32_cpufreq_driver_init(struct cpufreq_policy *policy)
-{
-	unsigned int frequency, rate, min_freq;
-	struct clk *cpuclk;
-	int retval, steps, i;
-
-	if (policy->cpu != 0)
-		return -EINVAL;
-
-	cpuclk = clk_get(NULL, "cpu");
-	if (IS_ERR(cpuclk)) {
-		pr_debug("cpufreq: could not get CPU clk\n");
-		retval = PTR_ERR(cpuclk);
-		goto out_err;
-	}
-
-	min_freq = (clk_round_rate(cpuclk, 1) + 500) / 1000;
-	frequency = (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
-	policy->cpuinfo.transition_latency = 0;
-
-	/*
-	 * AVR32 CPU frequency rate scales in power of two between maximum and
-	 * minimum, also add space for the table end marker.
-	 *
-	 * Further validate that the frequency is usable, and append it to the
-	 * frequency table.
-	 */
-	steps = fls(frequency / min_freq) + 1;
-	freq_table = kzalloc(steps * sizeof(struct cpufreq_frequency_table),
-			GFP_KERNEL);
-	if (!freq_table) {
-		retval = -ENOMEM;
-		goto out_err_put_clk;
-	}
-
-	for (i = 0; i < (steps - 1); i++) {
-		rate = clk_round_rate(cpuclk, frequency * 1000) / 1000;
-
-		if (rate != frequency)
-			freq_table[i].frequency = CPUFREQ_ENTRY_INVALID;
-		else
-			freq_table[i].frequency = frequency;
-
-		frequency /= 2;
-	}
-
-	policy->clk = cpuclk;
-	freq_table[steps - 1].frequency = CPUFREQ_TABLE_END;
-
-	retval = cpufreq_table_validate_and_show(policy, freq_table);
-	if (!retval) {
-		printk("cpufreq: AT32AP CPU frequency driver\n");
-		return 0;
-	}
-
-	kfree(freq_table);
-out_err_put_clk:
-	clk_put(cpuclk);
-out_err:
-	return retval;
-}
-
-static struct cpufreq_driver at32_driver = {
-	.name		= "at32ap",
-	.init		= at32_cpufreq_driver_init,
-	.verify		= cpufreq_generic_frequency_table_verify,
-	.target_index	= at32_set_target,
-	.get		= cpufreq_generic_get,
-	.flags		= CPUFREQ_STICKY,
-};
-
-static int __init at32_cpufreq_init(void)
-{
-	return cpufreq_register_driver(&at32_driver);
-}
-late_initcall(at32_cpufreq_init);