cpufreq: davinci: move cpufreq driver to drivers/cpufreq

This patch moves cpufreq driver of ARM based davinci platform to
drivers/cpufreq.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

2 files changed, 0 insertions, 234 deletions

diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile
index fb5c1aa98a6..dd1ffccc75e 100644
--- a/arch/arm/mach-davinci/Makefile
+++ b/arch/arm/mach-davinci/Makefile
@@ -37,7 +37,6 @@ obj-$(CONFIG_MACH_MITYOMAPL138)		+= board-mityomapl138.o
 obj-$(CONFIG_MACH_OMAPL138_HAWKBOARD)	+= board-omapl138-hawk.o
 
 # Power Management
-obj-$(CONFIG_CPU_FREQ)			+= cpufreq.o
 obj-$(CONFIG_CPU_IDLE)			+= cpuidle.o
 obj-$(CONFIG_SUSPEND)			+= pm.o sleep.o
 obj-$(CONFIG_HAVE_CLK)			+= pm_domain.o
diff --git a/arch/arm/mach-davinci/cpufreq.c b/arch/arm/mach-davinci/cpufreq.c
deleted file mode 100644
index 7c2e943c550..00000000000
--- a/arch/arm/mach-davinci/cpufreq.c
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- * CPU frequency scaling for DaVinci
- *
- * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
- *
- * Based on linux/arch/arm/plat-omap/cpu-omap.c. Original Copyright follows:
- *
- *  Copyright (C) 2005 Nokia Corporation
- *  Written by Tony Lindgren <tony@atomide.com>
- *
- *  Based on cpu-sa1110.c, Copyright (C) 2001 Russell King
- *
- * Copyright (C) 2007-2008 Texas Instruments, Inc.
- * Updated to support OMAP3
- * Rajendra Nayak <rnayak@ti.com>
- *
- * 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/types.h>
-#include <linux/cpufreq.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/platform_device.h>
-#include <linux/export.h>
-
-#include <mach/hardware.h>
-#include <mach/cpufreq.h>
-#include <mach/common.h>
-
-#include "clock.h"
-
-struct davinci_cpufreq {
-	struct device *dev;
-	struct clk *armclk;
-	struct clk *asyncclk;
-	unsigned long asyncrate;
-};
-static struct davinci_cpufreq cpufreq;
-
-static int davinci_verify_speed(struct cpufreq_policy *policy)
-{
-	struct davinci_cpufreq_config *pdata = cpufreq.dev->platform_data;
-	struct cpufreq_frequency_table *freq_table = pdata->freq_table;
-	struct clk *armclk = cpufreq.armclk;
-
-	if (freq_table)
-		return cpufreq_frequency_table_verify(policy, freq_table);
-
-	if (policy->cpu)
-		return -EINVAL;
-
-	cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
-				     policy->cpuinfo.max_freq);
-
-	policy->min = clk_round_rate(armclk, policy->min * 1000) / 1000;
-	policy->max = clk_round_rate(armclk, policy->max * 1000) / 1000;
-	cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
-						policy->cpuinfo.max_freq);
-	return 0;
-}
-
-static unsigned int davinci_getspeed(unsigned int cpu)
-{
-	if (cpu)
-		return 0;
-
-	return clk_get_rate(cpufreq.armclk) / 1000;
-}
-
-static int davinci_target(struct cpufreq_policy *policy,
-				unsigned int target_freq, unsigned int relation)
-{
-	int ret = 0;
-	unsigned int idx;
-	struct cpufreq_freqs freqs;
-	struct davinci_cpufreq_config *pdata = cpufreq.dev->platform_data;
-	struct clk *armclk = cpufreq.armclk;
-
-	freqs.old = davinci_getspeed(0);
-	freqs.new = clk_round_rate(armclk, target_freq * 1000) / 1000;
-
-	if (freqs.old == freqs.new)
-		return ret;
-
-	dev_dbg(cpufreq.dev, "transition: %u --> %u\n", freqs.old, freqs.new);
-
-	ret = cpufreq_frequency_table_target(policy, pdata->freq_table,
-						freqs.new, relation, &idx);
-	if (ret)
-		return -EINVAL;
-
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
-
-	/* if moving to higher frequency, up the voltage beforehand */
-	if (pdata->set_voltage && freqs.new > freqs.old) {
-		ret = pdata->set_voltage(idx);
-		if (ret)
-			goto out;
-	}
-
-	ret = clk_set_rate(armclk, idx);
-	if (ret)
-		goto out;
-
-	if (cpufreq.asyncclk) {
-		ret = clk_set_rate(cpufreq.asyncclk, cpufreq.asyncrate);
-		if (ret)
-			goto out;
-	}
-
-	/* if moving to lower freq, lower the voltage after lowering freq */
-	if (pdata->set_voltage && freqs.new < freqs.old)
-		pdata->set_voltage(idx);
-
-out:
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
-
-	return ret;
-}
-
-static int davinci_cpu_init(struct cpufreq_policy *policy)
-{
-	int result = 0;
-	struct davinci_cpufreq_config *pdata = cpufreq.dev->platform_data;
-	struct cpufreq_frequency_table *freq_table = pdata->freq_table;
-
-	if (policy->cpu != 0)
-		return -EINVAL;
-
-	/* Finish platform specific initialization */
-	if (pdata->init) {
-		result = pdata->init();
-		if (result)
-			return result;
-	}
-
-	policy->cur = davinci_getspeed(0);
-
-	result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
-	if (result) {
-		pr_err("%s: cpufreq_frequency_table_cpuinfo() failed",
-				__func__);
-		return result;
-	}
-
-	cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
-
-	/*
-	 * Time measurement across the target() function yields ~1500-1800us
-	 * time taken with no drivers on notification list.
-	 * Setting the latency to 2000 us to accommodate addition of drivers
-	 * to pre/post change notification list.
-	 */
-	policy->cpuinfo.transition_latency = 2000 * 1000;
-	return 0;
-}
-
-static int davinci_cpu_exit(struct cpufreq_policy *policy)
-{
-	cpufreq_frequency_table_put_attr(policy->cpu);
-	return 0;
-}
-
-static struct freq_attr *davinci_cpufreq_attr[] = {
-	&cpufreq_freq_attr_scaling_available_freqs,
-	NULL,
-};
-
-static struct cpufreq_driver davinci_driver = {
-	.flags		= CPUFREQ_STICKY,
-	.verify		= davinci_verify_speed,
-	.target		= davinci_target,
-	.get		= davinci_getspeed,
-	.init		= davinci_cpu_init,
-	.exit		= davinci_cpu_exit,
-	.name		= "davinci",
-	.attr		= davinci_cpufreq_attr,
-};
-
-static int __init davinci_cpufreq_probe(struct platform_device *pdev)
-{
-	struct davinci_cpufreq_config *pdata = pdev->dev.platform_data;
-	struct clk *asyncclk;
-
-	if (!pdata)
-		return -EINVAL;
-	if (!pdata->freq_table)
-		return -EINVAL;
-
-	cpufreq.dev = &pdev->dev;
-
-	cpufreq.armclk = clk_get(NULL, "arm");
-	if (IS_ERR(cpufreq.armclk)) {
-		dev_err(cpufreq.dev, "Unable to get ARM clock\n");
-		return PTR_ERR(cpufreq.armclk);
-	}
-
-	asyncclk = clk_get(cpufreq.dev, "async");
-	if (!IS_ERR(asyncclk)) {
-		cpufreq.asyncclk = asyncclk;
-		cpufreq.asyncrate = clk_get_rate(asyncclk);
-	}
-
-	return cpufreq_register_driver(&davinci_driver);
-}
-
-static int __exit davinci_cpufreq_remove(struct platform_device *pdev)
-{
-	clk_put(cpufreq.armclk);
-
-	if (cpufreq.asyncclk)
-		clk_put(cpufreq.asyncclk);
-
-	return cpufreq_unregister_driver(&davinci_driver);
-}
-
-static struct platform_driver davinci_cpufreq_driver = {
-	.driver = {
-		.name	 = "cpufreq-davinci",
-		.owner	 = THIS_MODULE,
-	},
-	.remove = __exit_p(davinci_cpufreq_remove),
-};
-
-int __init davinci_cpufreq_init(void)
-{
-	return platform_driver_probe(&davinci_cpufreq_driver,
-							davinci_cpufreq_probe);
-}
-