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 fb5c1aa98a63..dd1ffccc75e9 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 7c2e943c5500..000000000000
--- 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);
-}
-