cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq

This patch moves cpufreq driver of Samsung's ARM based
s3c24xx platform to drivers/cpufreq.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

9 files changed, 28 insertions, 1685 deletions

diff --git a/arch/arm/mach-s3c24xx/Kconfig b/arch/arm/mach-s3c24xx/Kconfig
index f2f7088bfd22..ed8aadc646f9 100644
--- a/arch/arm/mach-s3c24xx/Kconfig
+++ b/arch/arm/mach-s3c24xx/Kconfig
@@ -28,7 +28,7 @@ config CPU_S3C2410
 	select CPU_ARM920T
 	select CPU_LLSERIAL_S3C2410
 	select S3C2410_CLOCK
-	select S3C2410_CPUFREQ if CPU_FREQ_S3C24XX
+	select ARM_S3C2410_CPUFREQ if ARM_S3C24XX_CPUFREQ
 	select S3C2410_PM if PM
 	select SAMSUNG_HRT
 	help
@@ -204,27 +204,38 @@ config S3C24XX_GPIO_EXTRA128
 	  Add an extra 128 gpio numbers to the available GPIO pool. This is
 	  available for boards that need extra gpios for external devices.
 
+config S3C24XX_PLL
+	bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
+	depends on ARM_S3C24XX
+	help
+	  Compile in support for changing the PLL frequency from the
+	  S3C24XX series CPUfreq driver. The PLL takes time to settle
+	  after a frequency change, so by default it is not enabled.
+
+	  This also means that the PLL tables for the selected CPU(s) will
+	  be built which may increase the size of the kernel image.
+
 # cpu frequency items common between s3c2410 and s3c2440/s3c2442
 
 config S3C2410_IOTIMING
 	bool
-	depends on CPU_FREQ_S3C24XX
+	depends on ARM_S3C24XX_CPUFREQ
 	help
 	  Internal node to select io timing code that is common to the s3c2410
 	  and s3c2440/s3c2442 cpu frequency support.
 
 config S3C2410_CPUFREQ_UTILS
-	bool
-	depends on CPU_FREQ_S3C24XX
-	help
-	  Internal node to select timing code that is common to the s3c2410
-	  and s3c2440/s3c244 cpu frequency support.
+       bool
+       depends on ARM_S3C24XX_CPUFREQ
+       help
+         Internal node to select timing code that is common to the s3c2410
+         and s3c2440/s3c244 cpu frequency support.
 
 # cpu frequency support common to s3c2412, s3c2413 and s3c2442
 
 config S3C2412_IOTIMING
 	bool
-	depends on CPU_FREQ_S3C24XX && (CPU_S3C2412 || CPU_S3C2443)
+	depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2412 || CPU_S3C2443)
 	help
 	  Intel node to select io timing code that is common to the s3c2412
 	  and the s3c2443.
@@ -233,16 +244,9 @@ config S3C2412_IOTIMING
 
 if CPU_S3C2410
 
-config S3C2410_CPUFREQ
-	bool
-	depends on CPU_FREQ_S3C24XX
-	select S3C2410_CPUFREQ_UTILS
-	help
-	  CPU Frequency scaling support for S3C2410
-
 config S3C2410_PLL
 	bool
-	depends on S3C2410_CPUFREQ && CPU_FREQ_S3C24XX_PLL
+	depends on ARM_S3C2410_CPUFREQ && S3C24XX_PLL
 	default y
 	help
 	  Select the PLL table for the S3C2410
@@ -278,7 +282,7 @@ config ARCH_BAST
 	bool "Simtec Electronics BAST (EB2410ITX)"
 	select ISA
 	select MACH_BAST_IDE
-	select S3C2410_IOTIMING if S3C2410_CPUFREQ
+	select S3C2410_IOTIMING if ARM_S3C2410_CPUFREQ
 	select S3C24XX_DCLK
 	select S3C24XX_SIMTEC_NOR
 	select S3C24XX_SIMTEC_PM if PM
@@ -385,14 +389,6 @@ config CPU_S3C2412_ONLY
 		   !CPU_S3C2442 && !CPU_S3C2443
 	default y
 
-config S3C2412_CPUFREQ
-	bool
-	depends on CPU_FREQ_S3C24XX
-	default y
-	select S3C2412_IOTIMING
-	help
-	  CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
-
 config S3C2412_DMA
 	bool
 	help
@@ -494,14 +490,6 @@ endif	# CPU_S3C2416
 
 if CPU_S3C2440
 
-config S3C2440_CPUFREQ
-	bool "S3C2440/S3C2442 CPU Frequency scaling support"
-	depends on CPU_FREQ_S3C24XX && (CPU_S3C2440 || CPU_S3C2442)
-	default y
-	select S3C2410_CPUFREQ_UTILS
-	help
-	  CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
-
 config S3C2440_DMA
 	bool
 	help
@@ -521,15 +509,15 @@ config S3C2440_XTAL_16934400
 
 config S3C2440_PLL_12000000
 	bool
-	depends on S3C2440_CPUFREQ && S3C2440_XTAL_12000000
-	default y if CPU_FREQ_S3C24XX_PLL
+	depends on ARM_S3C2440_CPUFREQ && S3C2440_XTAL_12000000
+	default y if S3C24XX_PLL
 	help
 	  PLL tables for S3C2440 or S3C2442 CPUs with 12MHz crystals.
 
 config S3C2440_PLL_16934400
 	bool
-	depends on S3C2440_CPUFREQ && S3C2440_XTAL_16934400
-	default y if CPU_FREQ_S3C24XX_PLL
+	depends on ARM_S3C2440_CPUFREQ && S3C2440_XTAL_16934400
+	default y if S3C24XX_PLL
 	help
 	  PLL tables for S3C2440 or S3C2442 CPUs with 16.934MHz crystals.
 
@@ -583,7 +571,7 @@ config MACH_NEXCODER_2440
 
 config MACH_OSIRIS
 	bool "Simtec IM2440D20 (OSIRIS) module"
-	select S3C2410_IOTIMING if S3C2440_CPUFREQ
+	select S3C2410_IOTIMING if ARM_S3C2440_CPUFREQ
 	select S3C2440_XTAL_12000000
 	select S3C24XX_DCLK
 	select S3C24XX_GPIO_EXTRA128
@@ -655,7 +643,7 @@ config MACH_RX1950
 	bool "HP iPAQ rx1950"
 	select I2C
 	select PM_H1940 if PM
-	select S3C2410_IOTIMING if S3C2440_CPUFREQ
+	select S3C2410_IOTIMING if ARM_S3C2440_CPUFREQ
 	select S3C2440_XTAL_16934400
 	select S3C24XX_DCLK
 	select S3C24XX_PWM
diff --git a/arch/arm/mach-s3c24xx/Makefile b/arch/arm/mach-s3c24xx/Makefile
index 6f46ecfc8396..a3b495a4bba0 100644
--- a/arch/arm/mach-s3c24xx/Makefile
+++ b/arch/arm/mach-s3c24xx/Makefile
@@ -17,13 +17,11 @@ obj-				:=
 obj-y				+= common.o
 
 obj-$(CONFIG_CPU_S3C2410)	+= s3c2410.o
-obj-$(CONFIG_S3C2410_CPUFREQ)	+= cpufreq-s3c2410.o
 obj-$(CONFIG_S3C2410_DMA)	+= dma-s3c2410.o
 obj-$(CONFIG_S3C2410_PLL)	+= pll-s3c2410.o
 obj-$(CONFIG_S3C2410_PM)	+= pm-s3c2410.o sleep-s3c2410.o
 
 obj-$(CONFIG_CPU_S3C2412)	+= s3c2412.o clock-s3c2412.o
-obj-$(CONFIG_S3C2412_CPUFREQ)	+= cpufreq-s3c2412.o
 obj-$(CONFIG_S3C2412_DMA)	+= dma-s3c2412.o
 obj-$(CONFIG_S3C2412_PM)	+= pm-s3c2412.o
 obj-$(CONFIG_S3C2412_PM_SLEEP)	+= sleep-s3c2412.o
@@ -34,7 +32,6 @@ obj-$(CONFIG_S3C2416_PM)	+= pm-s3c2416.o
 obj-$(CONFIG_CPU_S3C2440)	+= s3c2440.o clock-s3c2440.o
 obj-$(CONFIG_CPU_S3C2442)	+= s3c2442.o
 obj-$(CONFIG_CPU_S3C244X)	+= s3c244x.o clock-s3c244x.o
-obj-$(CONFIG_S3C2440_CPUFREQ)	+= cpufreq-s3c2440.o
 obj-$(CONFIG_S3C2440_DMA)	+= dma-s3c2440.o
 obj-$(CONFIG_S3C2440_PLL_12000000) += pll-s3c2440-12000000.o
 obj-$(CONFIG_S3C2440_PLL_16934400) += pll-s3c2440-16934400.o
@@ -59,9 +56,6 @@ obj-$(CONFIG_S3C2412_IOTIMING)	+= iotiming-s3c2412.o
 obj-$(CONFIG_S3C2443_COMMON)	+= common-s3c2443.o
 obj-$(CONFIG_S3C2443_DMA)	+= dma-s3c2443.o
 
-obj-$(CONFIG_CPU_FREQ_S3C24XX)	+= cpufreq.o
-obj-$(CONFIG_CPU_FREQ_S3C24XX_DEBUGFS) += cpufreq-debugfs.o
-
 #
 # machine support
 # following is ordered alphabetically by option text.
diff --git a/arch/arm/mach-s3c24xx/cpufreq-debugfs.c b/arch/arm/mach-s3c24xx/cpufreq-debugfs.c
deleted file mode 100644
index 9b7b4289d66c..000000000000
--- a/arch/arm/mach-s3c24xx/cpufreq-debugfs.c
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- * Copyright (c) 2009 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C24XX CPU Frequency scaling - debugfs status support
- *
- * 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/init.h>
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/cpufreq.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/err.h>
-
-#include <plat/cpu-freq-core.h>
-
-static struct dentry *dbgfs_root;
-static struct dentry *dbgfs_file_io;
-static struct dentry *dbgfs_file_info;
-static struct dentry *dbgfs_file_board;
-
-#define print_ns(x) ((x) / 10), ((x) % 10)
-
-static void show_max(struct seq_file *seq, struct s3c_freq *f)
-{
-	seq_printf(seq, "MAX: F=%lu, H=%lu, P=%lu, A=%lu\n",
-		   f->fclk, f->hclk, f->pclk, f->armclk);
-}
-
-static int board_show(struct seq_file *seq, void *p)
-{
-	struct s3c_cpufreq_config *cfg;
-	struct s3c_cpufreq_board *brd;
-
-	cfg = s3c_cpufreq_getconfig();
-	if (!cfg) {
-		seq_printf(seq, "no configuration registered\n");
-		return 0;
-	}
-
-	brd = cfg->board;
-	if (!brd) {
-		seq_printf(seq, "no board definition set?\n");
-		return 0;
-	}
-
-	seq_printf(seq, "SDRAM refresh %u ns\n", brd->refresh);
-	seq_printf(seq, "auto_io=%u\n", brd->auto_io);
-	seq_printf(seq, "need_io=%u\n", brd->need_io);
-
-	show_max(seq, &brd->max);
-
-
-	return 0;
-}
-
-static int fops_board_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, board_show, NULL);
-}
-
-static const struct file_operations fops_board = {
-	.open		= fops_board_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-	.owner		= THIS_MODULE,
-};
-
-static int info_show(struct seq_file *seq, void *p)
-{
-	struct s3c_cpufreq_config *cfg;
-
-	cfg = s3c_cpufreq_getconfig();
-	if (!cfg) {
-		seq_printf(seq, "no configuration registered\n");
-		return 0;
-	}
-
-	seq_printf(seq, "  FCLK %ld Hz\n", cfg->freq.fclk);
-	seq_printf(seq, "  HCLK %ld Hz (%lu.%lu ns)\n",
-		   cfg->freq.hclk, print_ns(cfg->freq.hclk_tns));
-	seq_printf(seq, "  PCLK %ld Hz\n", cfg->freq.hclk);
-	seq_printf(seq, "ARMCLK %ld Hz\n", cfg->freq.armclk);
-	seq_printf(seq, "\n");
-
-	show_max(seq, &cfg->max);
-
-	seq_printf(seq, "Divisors: P=%d, H=%d, A=%d, dvs=%s\n",
-		   cfg->divs.h_divisor, cfg->divs.p_divisor,
-		   cfg->divs.arm_divisor, cfg->divs.dvs ? "on" : "off");
-	seq_printf(seq, "\n");
-
-	seq_printf(seq, "lock_pll=%u\n", cfg->lock_pll);
-
-	return 0;
-}
-
-static int fops_info_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, info_show, NULL);
-}
-
-static const struct file_operations fops_info = {
-	.open		= fops_info_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-	.owner		= THIS_MODULE,
-};
-
-static int io_show(struct seq_file *seq, void *p)
-{
-	void (*show_bank)(struct seq_file *, struct s3c_cpufreq_config *, union s3c_iobank *);
-	struct s3c_cpufreq_config *cfg;
-	struct s3c_iotimings *iot;
-	union s3c_iobank *iob;
-	int bank;
-
-	cfg = s3c_cpufreq_getconfig();
-	if (!cfg) {
-		seq_printf(seq, "no configuration registered\n");
-		return 0;
-	}
-
-	show_bank = cfg->info->debug_io_show;
-	if (!show_bank) {
-		seq_printf(seq, "no code to show bank timing\n");
-		return 0;
-	}
-
-	iot = s3c_cpufreq_getiotimings();
-	if (!iot) {
-		seq_printf(seq, "no io timings registered\n");
-		return 0;
-	}
-
-	seq_printf(seq, "hclk period is %lu.%lu ns\n", print_ns(cfg->freq.hclk_tns));
-
-	for (bank = 0; bank < MAX_BANKS; bank++) {
-		iob = &iot->bank[bank];
-
-		seq_printf(seq, "bank %d: ", bank);
-
-		if (!iob->io_2410) {
-			seq_printf(seq, "nothing set\n");
-			continue;
-		}
-
-		show_bank(seq, cfg, iob);
-	}
-
-	return 0;
-}
-
-static int fops_io_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, io_show, NULL);
-}
-
-static const struct file_operations fops_io = {
-	.open		= fops_io_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-	.owner		= THIS_MODULE,
-};
-
-
-static int __init s3c_freq_debugfs_init(void)
-{
-	dbgfs_root = debugfs_create_dir("s3c-cpufreq", NULL);
-	if (IS_ERR(dbgfs_root)) {
-		printk(KERN_ERR "%s: error creating debugfs root\n", __func__);
-		return PTR_ERR(dbgfs_root);
-	}
-
-	dbgfs_file_io = debugfs_create_file("io-timing", S_IRUGO, dbgfs_root,
-					    NULL, &fops_io);
-
-	dbgfs_file_info = debugfs_create_file("info", S_IRUGO, dbgfs_root,
-					      NULL, &fops_info);
-
-	dbgfs_file_board = debugfs_create_file("board", S_IRUGO, dbgfs_root,
-					       NULL, &fops_board);
-
-	return 0;
-}
-
-late_initcall(s3c_freq_debugfs_init);
-
diff --git a/arch/arm/mach-s3c24xx/cpufreq-s3c2410.c b/arch/arm/mach-s3c24xx/cpufreq-s3c2410.c
deleted file mode 100644
index cfa0dd8723ec..000000000000
--- a/arch/arm/mach-s3c24xx/cpufreq-s3c2410.c
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- * Copyright (c) 2006-2008 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2410 CPU Frequency scaling
- *
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <mach/regs-clock.h>
-
-#include <plat/cpu.h>
-#include <plat/clock.h>
-#include <plat/cpu-freq-core.h>
-
-/* Note, 2410A has an extra mode for 1:4:4 ratio, bit 2 of CLKDIV */
-
-static void s3c2410_cpufreq_setdivs(struct s3c_cpufreq_config *cfg)
-{
-	u32 clkdiv = 0;
-
-	if (cfg->divs.h_divisor == 2)
-		clkdiv |= S3C2410_CLKDIVN_HDIVN;
-
-	if (cfg->divs.p_divisor != cfg->divs.h_divisor)
-		clkdiv |= S3C2410_CLKDIVN_PDIVN;
-
-	__raw_writel(clkdiv, S3C2410_CLKDIVN);
-}
-
-static int s3c2410_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
-{
-	unsigned long hclk, fclk, pclk;
-	unsigned int hdiv, pdiv;
-	unsigned long hclk_max;
-
-	fclk = cfg->freq.fclk;
-	hclk_max = cfg->max.hclk;
-
-	cfg->freq.armclk = fclk;
-
-	s3c_freq_dbg("%s: fclk is %lu, max hclk %lu\n",
-		      __func__, fclk, hclk_max);
-
-	hdiv = (fclk > cfg->max.hclk) ? 2 : 1;
-	hclk = fclk / hdiv;
-
-	if (hclk > cfg->max.hclk) {
-		s3c_freq_dbg("%s: hclk too big\n", __func__);
-		return -EINVAL;
-	}
-
-	pdiv = (hclk > cfg->max.pclk) ? 2 : 1;
-	pclk = hclk / pdiv;
-
-	if (pclk > cfg->max.pclk) {
-		s3c_freq_dbg("%s: pclk too big\n", __func__);
-		return -EINVAL;
-	}
-
-	pdiv *= hdiv;
-
-	/* record the result */
-	cfg->divs.p_divisor = pdiv;
-	cfg->divs.h_divisor = hdiv;
-
-	return 0;
-}
-
-static struct s3c_cpufreq_info s3c2410_cpufreq_info = {
-	.max		= {
-		.fclk	= 200000000,
-		.hclk	= 100000000,
-		.pclk	=  50000000,
-	},
-
-	/* transition latency is about 5ms worst-case, so
-	 * set 10ms to be sure */
-	.latency	= 10000000,
-
-	.locktime_m	= 150,
-	.locktime_u	= 150,
-	.locktime_bits	= 12,
-
-	.need_pll	= 1,
-
-	.name		= "s3c2410",
-	.calc_iotiming	= s3c2410_iotiming_calc,
-	.set_iotiming	= s3c2410_iotiming_set,
-	.get_iotiming	= s3c2410_iotiming_get,
-	.resume_clocks	= s3c2410_setup_clocks,
-
-	.set_fvco	= s3c2410_set_fvco,
-	.set_refresh	= s3c2410_cpufreq_setrefresh,
-	.set_divs	= s3c2410_cpufreq_setdivs,
-	.calc_divs	= s3c2410_cpufreq_calcdivs,
-
-	.debug_io_show	= s3c_cpufreq_debugfs_call(s3c2410_iotiming_debugfs),
-};
-
-static int s3c2410_cpufreq_add(struct device *dev,
-			       struct subsys_interface *sif)
-{
-	return s3c_cpufreq_register(&s3c2410_cpufreq_info);
-}
-
-static struct subsys_interface s3c2410_cpufreq_interface = {
-	.name		= "s3c2410_cpufreq",
-	.subsys		= &s3c2410_subsys,
-	.add_dev	= s3c2410_cpufreq_add,
-};
-
-static int __init s3c2410_cpufreq_init(void)
-{
-	return subsys_interface_register(&s3c2410_cpufreq_interface);
-}
-arch_initcall(s3c2410_cpufreq_init);
-
-static int s3c2410a_cpufreq_add(struct device *dev,
-				struct subsys_interface *sif)
-{
-	/* alter the maximum freq settings for S3C2410A. If a board knows
-	 * it only has a maximum of 200, then it should register its own
-	 * limits. */
-
-	s3c2410_cpufreq_info.max.fclk = 266000000;
-	s3c2410_cpufreq_info.max.hclk = 133000000;
-	s3c2410_cpufreq_info.max.pclk =  66500000;
-	s3c2410_cpufreq_info.name = "s3c2410a";
-
-	return s3c2410_cpufreq_add(dev, sif);
-}
-
-static struct subsys_interface s3c2410a_cpufreq_interface = {
-	.name		= "s3c2410a_cpufreq",
-	.subsys		= &s3c2410a_subsys,
-	.add_dev	= s3c2410a_cpufreq_add,
-};
-
-static int __init s3c2410a_cpufreq_init(void)
-{
-	return subsys_interface_register(&s3c2410a_cpufreq_interface);
-}
-arch_initcall(s3c2410a_cpufreq_init);
diff --git a/arch/arm/mach-s3c24xx/cpufreq-s3c2412.c b/arch/arm/mach-s3c24xx/cpufreq-s3c2412.c
deleted file mode 100644
index 8bf0f3a77476..000000000000
--- a/arch/arm/mach-s3c24xx/cpufreq-s3c2412.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/*
- * Copyright 2008 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2412 CPU Frequency scalling
- *
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <mach/regs-clock.h>
-
-#include <plat/cpu.h>
-#include <plat/clock.h>
-#include <plat/cpu-freq-core.h>
-
-#include "s3c2412.h"
-
-/* our clock resources. */
-static struct clk *xtal;
-static struct clk *fclk;
-static struct clk *hclk;
-static struct clk *armclk;
-
-/* HDIV: 1, 2, 3, 4, 6, 8 */
-
-static int s3c2412_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
-{
-	unsigned int hdiv, pdiv, armdiv, dvs;
-	unsigned long hclk, fclk, armclk, armdiv_clk;
-	unsigned long hclk_max;
-
-	fclk = cfg->freq.fclk;
-	armclk = cfg->freq.armclk;
-	hclk_max = cfg->max.hclk;
-
-	/* We can't run hclk above armclk as at the best we have to
-	 * have armclk and hclk in dvs mode. */
-
-	if (hclk_max > armclk)
-		hclk_max = armclk;
-
-	s3c_freq_dbg("%s: fclk=%lu, armclk=%lu, hclk_max=%lu\n",
-		     __func__, fclk, armclk, hclk_max);
-	s3c_freq_dbg("%s: want f=%lu, arm=%lu, h=%lu, p=%lu\n",
-		     __func__, cfg->freq.fclk, cfg->freq.armclk,
-		     cfg->freq.hclk, cfg->freq.pclk);
-
-	armdiv = fclk / armclk;
-
-	if (armdiv < 1)
-		armdiv = 1;
-	if (armdiv > 2)
-		armdiv = 2;
-
-	cfg->divs.arm_divisor = armdiv;
-	armdiv_clk = fclk / armdiv;
-
-	hdiv = armdiv_clk / hclk_max;
-	if (hdiv < 1)
-		hdiv = 1;
-
-	cfg->freq.hclk = hclk = armdiv_clk / hdiv;
-
-	/* set dvs depending on whether we reached armclk or not. */
-	cfg->divs.dvs = dvs = armclk < armdiv_clk;
-
-	/* update the actual armclk we achieved. */
-	cfg->freq.armclk = dvs ? hclk : armdiv_clk;
-
-	s3c_freq_dbg("%s: armclk %lu, hclk %lu, armdiv %d, hdiv %d, dvs %d\n",
-		     __func__, armclk, hclk, armdiv, hdiv, cfg->divs.dvs);
-
-	if (hdiv > 4)
-		goto invalid;
-
-	pdiv = (hclk > cfg->max.pclk) ? 2 : 1;
-
-	if ((hclk / pdiv) > cfg->max.pclk)
-		pdiv++;
-
-	cfg->freq.pclk = hclk / pdiv;
-
-	s3c_freq_dbg("%s: pdiv %d\n", __func__, pdiv);
-
-	if (pdiv > 2)
-		goto invalid;
-
-	pdiv *= hdiv;
-
-	/* store the result, and then return */
-
-	cfg->divs.h_divisor = hdiv * armdiv;
-	cfg->divs.p_divisor = pdiv * armdiv;
-
-	return 0;
-
-invalid:
-	return -EINVAL;
-}
-
-static void s3c2412_cpufreq_setdivs(struct s3c_cpufreq_config *cfg)
-{
-	unsigned long clkdiv;
-	unsigned long olddiv;
-
-	olddiv = clkdiv = __raw_readl(S3C2410_CLKDIVN);
-
-	/* clear off current clock info */
-
-	clkdiv &= ~S3C2412_CLKDIVN_ARMDIVN;
-	clkdiv &= ~S3C2412_CLKDIVN_HDIVN_MASK;
-	clkdiv &= ~S3C2412_CLKDIVN_PDIVN;
-
-	if (cfg->divs.arm_divisor == 2)
-		clkdiv |= S3C2412_CLKDIVN_ARMDIVN;
-
-	clkdiv |= ((cfg->divs.h_divisor / cfg->divs.arm_divisor) - 1);
-
-	if (cfg->divs.p_divisor != cfg->divs.h_divisor)
-		clkdiv |= S3C2412_CLKDIVN_PDIVN;
-
-	s3c_freq_dbg("%s: div %08lx => %08lx\n", __func__, olddiv, clkdiv);
-	__raw_writel(clkdiv, S3C2410_CLKDIVN);
-
-	clk_set_parent(armclk, cfg->divs.dvs ? hclk : fclk);
-}
-
-static void s3c2412_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg)
-{
-	struct s3c_cpufreq_board *board = cfg->board;
-	unsigned long refresh;
-
-	s3c_freq_dbg("%s: refresh %u ns, hclk %lu\n", __func__,
-		     board->refresh, cfg->freq.hclk);
-
-	/* Reduce both the refresh time (in ns) and the frequency (in MHz)
-	 * by 10 each to ensure that we do not overflow 32 bit numbers. This
-	 * should work for HCLK up to 133MHz and refresh period up to 30usec.
-	 */
-
-	refresh = (board->refresh / 10);
-	refresh *= (cfg->freq.hclk / 100);
-	refresh /= (1 * 1000 * 1000);	/* 10^6 */
-
-	s3c_freq_dbg("%s: setting refresh 0x%08lx\n", __func__, refresh);
-	__raw_writel(refresh, S3C2412_REFRESH);
-}
-
-/* set the default cpu frequency information, based on an 200MHz part
- * as we have no other way of detecting the speed rating in software.
- */
-
-static struct s3c_cpufreq_info s3c2412_cpufreq_info = {
-	.max		= {
-		.fclk	= 200000000,
-		.hclk	= 100000000,
-		.pclk	=  50000000,
-	},
-
-	.latency	= 5000000, /* 5ms */
-
-	.locktime_m	= 150,
-	.locktime_u	= 150,
-	.locktime_bits	= 16,
-
-	.name		= "s3c2412",
-	.set_refresh	= s3c2412_cpufreq_setrefresh,
-	.set_divs	= s3c2412_cpufreq_setdivs,
-	.calc_divs	= s3c2412_cpufreq_calcdivs,
-
-	.calc_iotiming	= s3c2412_iotiming_calc,
-	.set_iotiming	= s3c2412_iotiming_set,
-	.get_iotiming	= s3c2412_iotiming_get,
-
-	.resume_clocks	= s3c2412_setup_clocks,
-
-	.debug_io_show  = s3c_cpufreq_debugfs_call(s3c2412_iotiming_debugfs),
-};
-
-static int s3c2412_cpufreq_add(struct device *dev,
-			       struct subsys_interface *sif)
-{
-	unsigned long fclk_rate;
-
-	hclk = clk_get(NULL, "hclk");
-	if (IS_ERR(hclk)) {
-		printk(KERN_ERR "%s: cannot find hclk clock\n", __func__);
-		return -ENOENT;
-	}
-
-	fclk = clk_get(NULL, "fclk");
-	if (IS_ERR(fclk)) {
-		printk(KERN_ERR "%s: cannot find fclk clock\n", __func__);
-		goto err_fclk;
-	}
-
-	fclk_rate = clk_get_rate(fclk);
-	if (fclk_rate > 200000000) {
-		printk(KERN_INFO
-		       "%s: fclk %ld MHz, assuming 266MHz capable part\n",
-		       __func__, fclk_rate / 1000000);
-		s3c2412_cpufreq_info.max.fclk = 266000000;
-		s3c2412_cpufreq_info.max.hclk = 133000000;
-		s3c2412_cpufreq_info.max.pclk =  66000000;
-	}
-
-	armclk = clk_get(NULL, "armclk");
-	if (IS_ERR(armclk)) {
-		printk(KERN_ERR "%s: cannot find arm clock\n", __func__);
-		goto err_armclk;
-	}
-
-	xtal = clk_get(NULL, "xtal");
-	if (IS_ERR(xtal)) {
-		printk(KERN_ERR "%s: cannot find xtal clock\n", __func__);
-		goto err_xtal;
-	}
-
-	return s3c_cpufreq_register(&s3c2412_cpufreq_info);
-
-err_xtal:
-	clk_put(armclk);
-err_armclk:
-	clk_put(fclk);
-err_fclk:
-	clk_put(hclk);
-
-	return -ENOENT;
-}
-
-static struct subsys_interface s3c2412_cpufreq_interface = {
-	.name		= "s3c2412_cpufreq",
-	.subsys		= &s3c2412_subsys,
-	.add_dev	= s3c2412_cpufreq_add,
-};
-
-static int s3c2412_cpufreq_init(void)
-{
-	return subsys_interface_register(&s3c2412_cpufreq_interface);
-}
-arch_initcall(s3c2412_cpufreq_init);
diff --git a/arch/arm/mach-s3c24xx/cpufreq-s3c2440.c b/arch/arm/mach-s3c24xx/cpufreq-s3c2440.c
deleted file mode 100644
index 72b2cc8a5a85..000000000000
--- a/arch/arm/mach-s3c24xx/cpufreq-s3c2440.c
+++ /dev/null
@@ -1,312 +0,0 @@
-/*
- * Copyright (c) 2006-2009 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *	Vincent Sanders <vince@simtec.co.uk>
- *
- * S3C2440/S3C2442 CPU Frequency scaling
- *
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <mach/regs-clock.h>
-
-#include <plat/cpu.h>
-#include <plat/cpu-freq-core.h>
-#include <plat/clock.h>
-
-static struct clk *xtal;
-static struct clk *fclk;
-static struct clk *hclk;
-static struct clk *armclk;
-
-/* HDIV: 1, 2, 3, 4, 6, 8 */
-
-static inline int within_khz(unsigned long a, unsigned long b)
-{
-	long diff = a - b;
-
-	return (diff >= -1000 && diff <= 1000);
-}
-
-/**
- * s3c2440_cpufreq_calcdivs - calculate divider settings
- * @cfg: The cpu frequency settings.
- *
- * Calcualte the divider values for the given frequency settings
- * specified in @cfg. The values are stored in @cfg for later use
- * by the relevant set routine if the request settings can be reached.
- */
-int s3c2440_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
-{
-	unsigned int hdiv, pdiv;
-	unsigned long hclk, fclk, armclk;
-	unsigned long hclk_max;
-
-	fclk = cfg->freq.fclk;
-	armclk = cfg->freq.armclk;
-	hclk_max = cfg->max.hclk;
-
-	s3c_freq_dbg("%s: fclk is %lu, armclk %lu, max hclk %lu\n",
-		     __func__, fclk, armclk, hclk_max);
-
-	if (armclk > fclk) {
-		printk(KERN_WARNING "%s: armclk > fclk\n", __func__);
-		armclk = fclk;
-	}
-
-	/* if we are in DVS, we need HCLK to be <= ARMCLK */
-	if (armclk < fclk && armclk < hclk_max)
-		hclk_max = armclk;
-
-	for (hdiv = 1; hdiv < 9; hdiv++) {
-		if (hdiv == 5 || hdiv == 7)
-			hdiv++;
-
-		hclk = (fclk / hdiv);
-		if (hclk <= hclk_max || within_khz(hclk, hclk_max))
-			break;
-	}
-
-	s3c_freq_dbg("%s: hclk %lu, div %d\n", __func__, hclk, hdiv);
-
-	if (hdiv > 8)
-		goto invalid;
-
-	pdiv = (hclk > cfg->max.pclk) ? 2 : 1;
-
-	if ((hclk / pdiv) > cfg->max.pclk)
-		pdiv++;
-
-	s3c_freq_dbg("%s: pdiv %d\n", __func__, pdiv);
-
-	if (pdiv > 2)
-		goto invalid;
-
-	pdiv *= hdiv;
-
-	/* calculate a valid armclk */
-
-	if (armclk < hclk)
-		armclk = hclk;
-
-	/* if we're running armclk lower than fclk, this really means
-	 * that the system should go into dvs mode, which means that
-	 * armclk is connected to hclk. */
-	if (armclk < fclk) {
-		cfg->divs.dvs = 1;
-		armclk = hclk;
-	} else
-		cfg->divs.dvs = 0;
-
-	cfg->freq.armclk = armclk;
-
-	/* store the result, and then return */
-
-	cfg->divs.h_divisor = hdiv;
-	cfg->divs.p_divisor = pdiv;
-
-	return 0;
-
- invalid:
-	return -EINVAL;
-}
-
-#define CAMDIVN_HCLK_HALF (S3C2440_CAMDIVN_HCLK3_HALF | \
-			   S3C2440_CAMDIVN_HCLK4_HALF)
-
-/**
- * s3c2440_cpufreq_setdivs - set the cpu frequency divider settings
- * @cfg: The cpu frequency settings.
- *
- * Set the divisors from the settings in @cfg, which where generated
- * during the calculation phase by s3c2440_cpufreq_calcdivs().
- */
-static void s3c2440_cpufreq_setdivs(struct s3c_cpufreq_config *cfg)
-{
-	unsigned long clkdiv, camdiv;
-
-	s3c_freq_dbg("%s: divsiors: h=%d, p=%d\n", __func__,
-		     cfg->divs.h_divisor, cfg->divs.p_divisor);
-
-	clkdiv = __raw_readl(S3C2410_CLKDIVN);
-	camdiv = __raw_readl(S3C2440_CAMDIVN);
-
-	clkdiv &= ~(S3C2440_CLKDIVN_HDIVN_MASK | S3C2440_CLKDIVN_PDIVN);
-	camdiv &= ~CAMDIVN_HCLK_HALF;
-
-	switch (cfg->divs.h_divisor) {
-	case 1:
-		clkdiv |= S3C2440_CLKDIVN_HDIVN_1;
-		break;
-
-	case 2:
-		clkdiv |= S3C2440_CLKDIVN_HDIVN_2;
-		break;
-
-	case 6:
-		camdiv |= S3C2440_CAMDIVN_HCLK3_HALF;
-	case 3:
-		clkdiv |= S3C2440_CLKDIVN_HDIVN_3_6;
-		break;
-
-	case 8:
-		camdiv |= S3C2440_CAMDIVN_HCLK4_HALF;
-	case 4:
-		clkdiv |= S3C2440_CLKDIVN_HDIVN_4_8;
-		break;
-
-	default:
-		BUG();	/* we don't expect to get here. */
-	}
-
-	if (cfg->divs.p_divisor != cfg->divs.h_divisor)
-		clkdiv |= S3C2440_CLKDIVN_PDIVN;
-
-	/* todo - set pclk. */
-
-	/* Write the divisors first with hclk intentionally halved so that
-	 * when we write clkdiv we will under-frequency instead of over. We
-	 * then make a short delay and remove the hclk halving if necessary.
-	 */
-
-	__raw_writel(camdiv | CAMDIVN_HCLK_HALF, S3C2440_CAMDIVN);
-	__raw_writel(clkdiv, S3C2410_CLKDIVN);
-
-	ndelay(20);
-	__raw_writel(camdiv, S3C2440_CAMDIVN);
-
-	clk_set_parent(armclk, cfg->divs.dvs ? hclk : fclk);
-}
-
-static int run_freq_for(unsigned long max_hclk, unsigned long fclk,
-			int *divs,
-			struct cpufreq_frequency_table *table,
-			size_t table_size)
-{
-	unsigned long freq;
-	int index = 0;
-	int div;
-
-	for (div = *divs; div > 0; div = *divs++) {
-		freq = fclk / div;
-
-		if (freq > max_hclk && div != 1)
-			continue;
-
-		freq /= 1000; /* table is in kHz */
-		index = s3c_cpufreq_addfreq(table, index, table_size, freq);
-		if (index < 0)
-			break;
-	}
-
-	return index;
-}
-
-static int hclk_divs[] = { 1, 2, 3, 4, 6, 8, -1 };
-
-static int s3c2440_cpufreq_calctable(struct s3c_cpufreq_config *cfg,
-				     struct cpufreq_frequency_table *table,
-				     size_t table_size)
-{
-	int ret;
-
-	WARN_ON(cfg->info == NULL);
-	WARN_ON(cfg->board == NULL);
-
-	ret = run_freq_for(cfg->info->max.hclk,
-			   cfg->info->max.fclk,
-			   hclk_divs,
-			   table, table_size);
-
-	s3c_freq_dbg("%s: returning %d\n", __func__, ret);
-
-	return ret;
-}
-
-struct s3c_cpufreq_info s3c2440_cpufreq_info = {
-	.max		= {
-		.fclk	= 400000000,
-		.hclk	= 133333333,
-		.pclk	=  66666666,
-	},
-
-	.locktime_m	= 300,
-	.locktime_u	= 300,
-	.locktime_bits	= 16,
-
-	.name		= "s3c244x",
-	.calc_iotiming	= s3c2410_iotiming_calc,
-	.set_iotiming	= s3c2410_iotiming_set,
-	.get_iotiming	= s3c2410_iotiming_get,
-	.set_fvco	= s3c2410_set_fvco,
-
-	.set_refresh	= s3c2410_cpufreq_setrefresh,
-	.set_divs	= s3c2440_cpufreq_setdivs,
-	.calc_divs	= s3c2440_cpufreq_calcdivs,
-	.calc_freqtable	= s3c2440_cpufreq_calctable,
-
-	.resume_clocks	= s3c244x_setup_clocks,
-
-	.debug_io_show  = s3c_cpufreq_debugfs_call(s3c2410_iotiming_debugfs),
-};
-
-static int s3c2440_cpufreq_add(struct device *dev,
-			       struct subsys_interface *sif)
-{
-	xtal = s3c_cpufreq_clk_get(NULL, "xtal");
-	hclk = s3c_cpufreq_clk_get(NULL, "hclk");
-	fclk = s3c_cpufreq_clk_get(NULL, "fclk");
-	armclk = s3c_cpufreq_clk_get(NULL, "armclk");
-
-	if (IS_ERR(xtal) || IS_ERR(hclk) || IS_ERR(fclk) || IS_ERR(armclk)) {
-		printk(KERN_ERR "%s: failed to get clocks\n", __func__);
-		return -ENOENT;
-	}
-
-	return s3c_cpufreq_register(&s3c2440_cpufreq_info);
-}
-
-static