[ARM] remove arch-imx

arch-imx is superseeded by the MXC architecture support.
This patch removes arch/arm/mach-imx from the kernel.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 0 insertions, 315 deletions

diff --git a/arch/arm/mach-imx/cpufreq.c b/arch/arm/mach-imx/cpufreq.c
deleted file mode 100644
index 434b4ca0af6..00000000000
--- a/arch/arm/mach-imx/cpufreq.c
+++ /dev/null
@@ -1,315 +0,0 @@
-/*
- * cpu.c: clock scaling for the iMX
- *
- * Copyright (C) 2000 2001, The Delft University of Technology
- * Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
- * Copyright (C) 2006 Inky Lung <ilung@cwlinux.com>
- * Copyright (C) 2006 Pavel Pisa, PiKRON <ppisa@pikron.com>
- *
- * Based on SA1100 version written by:
- * - Johan Pouwelse (J.A.Pouwelse@its.tudelft.nl): initial version
- * - Erik Mouw (J.A.K.Mouw@its.tudelft.nl):
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- */
-
-/*#define DEBUG*/
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/cpufreq.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <asm/system.h>
-
-#include <mach/hardware.h>
-
-#include "generic.h"
-
-#ifndef __val2mfld
-#define __val2mfld(mask,val) (((mask)&~((mask)<<1))*(val)&(mask))
-#endif
-#ifndef __mfld2val
-#define __mfld2val(mask,val) (((val)&(mask))/((mask)&~((mask)<<1)))
-#endif
-
-#define CR_920T_CLOCK_MODE	0xC0000000
-#define CR_920T_FASTBUS_MODE	0x00000000
-#define CR_920T_ASYNC_MODE	0xC0000000
-
-static u32 mpctl0_at_boot;
-static u32 bclk_div_at_boot;
-
-static struct clk *system_clk, *mcu_clk;
-
-static void imx_set_async_mode(void)
-{
-	adjust_cr(CR_920T_CLOCK_MODE, CR_920T_ASYNC_MODE);
-}
-
-static void imx_set_fastbus_mode(void)
-{
-	adjust_cr(CR_920T_CLOCK_MODE, CR_920T_FASTBUS_MODE);
-}
-
-static void imx_set_mpctl0(u32 mpctl0)
-{
-	unsigned long flags;
-
-	if (mpctl0 == 0) {
-		local_irq_save(flags);
-		CSCR &= ~CSCR_MPEN;
-		local_irq_restore(flags);
-		return;
-	}
-
-	local_irq_save(flags);
-	MPCTL0 = mpctl0;
-	CSCR |= CSCR_MPEN;
-	local_irq_restore(flags);
-}
-
-/**
- * imx_compute_mpctl - compute new PLL parameters
- * @new_mpctl:	pointer to location assigned by new PLL control register value
- * @cur_mpctl:	current PLL control register parameters
- * @f_ref:	reference source frequency Hz
- * @freq:	required frequency in Hz
- * @relation:	is one of %CPUFREQ_RELATION_L (supremum)
- *		and %CPUFREQ_RELATION_H (infimum)
- */
-long imx_compute_mpctl(u32 *new_mpctl, u32 cur_mpctl, u32 f_ref, unsigned long freq, int relation)
-{
-        u32 mfi;
-        u32 mfn;
-        u32 mfd;
-        u32 pd;
-	unsigned long long ll;
-	long l;
-	long quot;
-
-	/* Fdppl=2*Fref*(MFI+MFN/(MFD+1))/(PD+1) */
-	/*  PD=<0,15>, MFD=<1,1023>, MFI=<5,15> MFN=<0,1022> */
-
-	if (cur_mpctl) {
-		mfd = ((cur_mpctl >> 16) & 0x3ff) + 1;
-		pd =  ((cur_mpctl >> 26) & 0xf) + 1;
-	} else {
-		pd=2; mfd=313;
-	}
-
-	/* pd=2; mfd=313; mfi=8; mfn=183; */
-	/* (MFI+MFN/(MFD)) = Fdppl / (2*Fref) * (PD); */
-
-	quot = (f_ref + (1 << 9)) >> 10;
-	l = (freq * pd + quot) / (2 * quot);
-	mfi = l >> 10;
-	mfn = ((l & ((1 << 10) - 1)) * mfd + (1 << 9)) >> 10;
-
-	mfd -= 1;
-	pd -= 1;
-
-	*new_mpctl = ((mfi & 0xf) << 10) | (mfn & 0x3ff) | ((mfd & 0x3ff) << 16)
-		| ((pd & 0xf) << 26);
-
-	ll = 2 * (unsigned long long)f_ref * ( (mfi<<16) + (mfn<<16) / (mfd+1) );
-	quot = (pd+1) * (1<<16);
-	ll += quot / 2;
-	do_div(ll, quot);
-	freq = ll;
-
-	pr_debug(KERN_DEBUG "imx: new PLL parameters pd=%d mfd=%d mfi=%d mfn=%d, freq=%ld\n",
-		pd, mfd, mfi, mfn, freq);
-
-	return freq;
-}
-
-
-static int imx_verify_speed(struct cpufreq_policy *policy)
-{
-	if (policy->cpu != 0)
-		return -EINVAL;
-
-	cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq, policy->cpuinfo.max_freq);
-
-	return 0;
-}
-
-static unsigned int imx_get_speed(unsigned int cpu)
-{
-	unsigned int freq;
-	unsigned int cr;
-	unsigned int cscr;
-	unsigned int bclk_div;
-
-	if (cpu)
-		return 0;
-
-	cscr = CSCR;
-	bclk_div = __mfld2val(CSCR_BCLK_DIV, cscr) + 1;
-	cr = get_cr();
-
-	if((cr & CR_920T_CLOCK_MODE) == CR_920T_FASTBUS_MODE) {
-		freq = clk_get_rate(system_clk);
-		freq = (freq + bclk_div/2) / bclk_div;
-	} else {
-		freq = clk_get_rate(mcu_clk);
-		if (cscr & CSCR_MPU_PRESC)
-			freq /= 2;
-	}
-
-	freq = (freq + 500) / 1000;
-
-	return freq;
-}
-
-static int imx_set_target(struct cpufreq_policy *policy,
-			  unsigned int target_freq,
-			  unsigned int relation)
-{
-	struct cpufreq_freqs freqs;
-	u32 mpctl0 = 0;
-	u32 cscr;
-	unsigned long flags;
-	long freq;
-	long sysclk;
-	unsigned int bclk_div = bclk_div_at_boot;
-
-	/*
-	 * Some governors do not respects CPU and policy lower limits
-	 * which leads to bad things (division by zero etc), ensure
-	 * that such things do not happen.
-	 */
-	if(target_freq < policy->cpuinfo.min_freq)
-		target_freq = policy->cpuinfo.min_freq;
-
-	if(target_freq < policy->min)
-		target_freq = policy->min;
-
-	freq = target_freq * 1000;
-
-	pr_debug(KERN_DEBUG "imx: requested frequency %ld Hz, mpctl0 at boot 0x%08x\n",
-			freq, mpctl0_at_boot);
-
-	sysclk = clk_get_rate(system_clk);
-
-	if (freq > sysclk / bclk_div_at_boot + 1000000) {
-		freq = imx_compute_mpctl(&mpctl0, mpctl0_at_boot, CLK32 * 512, freq, relation);
-		if (freq < 0) {
-			printk(KERN_WARNING "imx: target frequency %ld Hz cannot be set\n", freq);
-			return -EINVAL;
-		}
-	} else {
-		if(freq + 1000 < sysclk) {
-			if (relation == CPUFREQ_RELATION_L)
-				bclk_div = (sysclk - 1000) / freq;
-			else
-				bclk_div = (sysclk + freq + 1000) / freq;
-
-			if(bclk_div > 16)
-				bclk_div = 16;
-			if(bclk_div < bclk_div_at_boot)
-				bclk_div = bclk_div_at_boot;
-		}
-		freq = (sysclk + bclk_div / 2) / bclk_div;
-	}
-
-	freqs.old = imx_get_speed(0);
-	freqs.new = (freq + 500) / 1000;
-	freqs.cpu = 0;
-	freqs.flags = 0;
-
-	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
-	local_irq_save(flags);
-
-	imx_set_fastbus_mode();
-
-	imx_set_mpctl0(mpctl0);
-
-	cscr = CSCR;
-	cscr &= ~CSCR_BCLK_DIV;
-	cscr |= __val2mfld(CSCR_BCLK_DIV, bclk_div - 1);
-	CSCR = cscr;
-
-	if(mpctl0) {
-		CSCR |= CSCR_MPLL_RESTART;
-
-		/* Wait until MPLL is stabilized */
-		while( CSCR & CSCR_MPLL_RESTART );
-
-		imx_set_async_mode();
-	}
-
-	local_irq_restore(flags);
-
-	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
-	pr_debug(KERN_INFO "imx: set frequency %ld Hz, running from %s\n",
-			freq, mpctl0? "MPLL": "SPLL");
-
-	return 0;
-}
-
-static int __init imx_cpufreq_driver_init(struct cpufreq_policy *policy)
-{
-	printk(KERN_INFO "i.MX cpu freq change driver v1.0\n");
-
-	if (policy->cpu != 0)
-		return -EINVAL;
-
-	policy->cur = policy->min = policy->max = imx_get_speed(0);
-	policy->cpuinfo.min_freq = 8000;
-	policy->cpuinfo.max_freq = 200000;
-	 /* Manual states, that PLL stabilizes in two CLK32 periods */
-	policy->cpuinfo.transition_latency = 4 * 1000000000LL / CLK32;
-	return 0;
-}
-
-static struct cpufreq_driver imx_driver = {
-	.flags		= CPUFREQ_STICKY,
-	.verify		= imx_verify_speed,
-	.target		= imx_set_target,
-	.get		= imx_get_speed,
-	.init		= imx_cpufreq_driver_init,
-	.name		= "imx",
-};
-
-static int __init imx_cpufreq_init(void)
-{
-	bclk_div_at_boot = __mfld2val(CSCR_BCLK_DIV, CSCR) + 1;
-	mpctl0_at_boot = 0;
-
-	system_clk = clk_get(NULL, "system_clk");
-	if (IS_ERR(system_clk))
-		return PTR_ERR(system_clk);
-
-	mcu_clk = clk_get(NULL, "mcu_clk");
-	if (IS_ERR(mcu_clk)) {
-		clk_put(system_clk);
-		return PTR_ERR(mcu_clk);
-	}
-
-	if((CSCR & CSCR_MPEN) &&
-	   ((get_cr() & CR_920T_CLOCK_MODE) != CR_920T_FASTBUS_MODE))
-		mpctl0_at_boot = MPCTL0;
-
-	return cpufreq_register_driver(&imx_driver);
-}
-
-arch_initcall(imx_cpufreq_init);
-