1 files changed, 0 insertions, 286 deletions
diff --git a/arch/arm/plat-s3c24xx/s3c2412-iotiming.c b/arch/arm/plat-s3c24xx/s3c2412-iotiming.c
deleted file mode 100644
index 48eee39ab369..000000000000
--- a/arch/arm/plat-s3c24xx/s3c2412-iotiming.c
+++ /dev/null
@@ -1,286 +0,0 @@
-/* linux/arch/arm/plat-s3c24xx/s3c2412-iotiming.c
- *
- * Copyright (c) 2006-2008 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2412/S3C2443 (PL093 based) IO timing 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/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/cpufreq.h>
-#include <linux/seq_file.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-
-#include <linux/amba/pl093.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <mach/regs-s3c2412-mem.h>
-
-#include <plat/cpu.h>
-#include <plat/cpu-freq-core.h>
-#include <plat/clock.h>
-
-#define print_ns(x) ((x) / 10), ((x) % 10)
-
-/**
- * s3c2412_print_timing - print timing infromation via printk.
- * @pfx: The prefix to print each line with.
- * @iot: The IO timing information
- */
-static void s3c2412_print_timing(const char *pfx, struct s3c_iotimings *iot)
-{
-	struct s3c2412_iobank_timing *bt;
-	unsigned int bank;
-
-	for (bank = 0; bank < MAX_BANKS; bank++) {
-		bt = iot->bank[bank].io_2412;
-		if (!bt)
-			continue;
-
-		printk(KERN_DEBUG "%s: %d: idcy=%d.%d wstrd=%d.%d wstwr=%d,%d"
-		       "wstoen=%d.%d wstwen=%d.%d wstbrd=%d.%d\n", pfx, bank,
-		       print_ns(bt->idcy),
-		       print_ns(bt->wstrd),
-		       print_ns(bt->wstwr),
-		       print_ns(bt->wstoen),
-		       print_ns(bt->wstwen),
-		       print_ns(bt->wstbrd));
-	}
-}
-
-/**
- * to_div - turn a cycle length into a divisor setting.
- * @cyc_tns: The cycle time in 10ths of nanoseconds.
- * @clk_tns: The clock period in 10ths of nanoseconds.
- */
-static inline unsigned int to_div(unsigned int cyc_tns, unsigned int clk_tns)
-{
-	return cyc_tns ? DIV_ROUND_UP(cyc_tns, clk_tns) : 0;
-}
-
-/**
- * calc_timing - calculate timing divisor value and check in range.
- * @hwtm: The hardware timing in 10ths of nanoseconds.
- * @clk_tns: The clock period in 10ths of nanoseconds.
- * @err: Pointer to err variable to update in event of failure.
- */
-static unsigned int calc_timing(unsigned int hwtm, unsigned int clk_tns,
-				unsigned int *err)
-{
-	unsigned int ret = to_div(hwtm, clk_tns);
-
-	if (ret > 0xf)
-		*err = -EINVAL;
-
-	return ret;
-}
-
-/**
- * s3c2412_calc_bank - calculate the bank divisor settings.
- * @cfg: The current frequency configuration.
- * @bt: The bank timing.
- */
-static int s3c2412_calc_bank(struct s3c_cpufreq_config *cfg,
-			     struct s3c2412_iobank_timing *bt)
-{
-	unsigned int hclk = cfg->freq.hclk_tns;
-	int err = 0;
-
-	bt->smbidcyr = calc_timing(bt->idcy, hclk, &err);
-	bt->smbwstrd = calc_timing(bt->wstrd, hclk, &err);
-	bt->smbwstwr = calc_timing(bt->wstwr, hclk, &err);
-	bt->smbwstoen = calc_timing(bt->wstoen, hclk, &err);
-	bt->smbwstwen = calc_timing(bt->wstwen, hclk, &err);
-	bt->smbwstbrd = calc_timing(bt->wstbrd, hclk, &err);
-
-	return err;
-}
-
-/**
- * s3c2412_iotiming_debugfs - debugfs show io bank timing information
- * @seq: The seq_file to write output to using seq_printf().
- * @cfg: The current configuration.
- * @iob: The IO bank information to decode.
-*/
-void s3c2412_iotiming_debugfs(struct seq_file *seq,
-			      struct s3c_cpufreq_config *cfg,
-			      union s3c_iobank *iob)
-{
-	struct s3c2412_iobank_timing *bt = iob->io_2412;
-
-	seq_printf(seq,
-		   "\tRead: idcy=%d.%d wstrd=%d.%d wstwr=%d,%d"
-		   "wstoen=%d.%d wstwen=%d.%d wstbrd=%d.%d\n",
-		   print_ns(bt->idcy),
-		   print_ns(bt->wstrd),
-		   print_ns(bt->wstwr),
-		   print_ns(bt->wstoen),
-		   print_ns(bt->wstwen),
-		   print_ns(bt->wstbrd));
-}
-
-/**
- * s3c2412_iotiming_calc - calculate all the bank divisor settings.
- * @cfg: The current frequency configuration.
- * @iot: The bank timing information.
- *
- * Calculate the timing information for all the banks that are
- * configured as IO, using s3c2412_calc_bank().
- */
-int s3c2412_iotiming_calc(struct s3c_cpufreq_config *cfg,
-			  struct s3c_iotimings *iot)
-{
-	struct s3c2412_iobank_timing *bt;
-	int bank;
-	int ret;
-
-	for (bank = 0; bank < MAX_BANKS; bank++) {
-		bt = iot->bank[bank].io_2412;
-		if (!bt)
-			continue;
-
-		ret = s3c2412_calc_bank(cfg, bt);
-		if (ret) {
-			printk(KERN_ERR "%s: cannot calculate bank %d io\n",
-			       __func__, bank);
-			goto err;
-		}
-	}
-
-	return 0;
- err:
-	return ret;
-}
-
-/**
- * s3c2412_iotiming_set - set the timing information
- * @cfg: The current frequency configuration.
- * @iot: The bank timing information.
- *
- * Set the IO bank information from the details calculated earlier from
- * calling s3c2412_iotiming_calc().
- */
-void s3c2412_iotiming_set(struct s3c_cpufreq_config *cfg,
-			  struct s3c_iotimings *iot)
-{
-	struct s3c2412_iobank_timing *bt;
-	void __iomem *regs;
-	int bank;
-
-	/* set the io timings from the specifier */
-
-	for (bank = 0; bank < MAX_BANKS; bank++) {
-		bt = iot->bank[bank].io_2412;
-		if (!bt)
-			continue;
-
-		regs = S3C2412_SSMC_BANK(bank);
-
-		__raw_writel(bt->smbidcyr, regs + SMBIDCYR);
-		__raw_writel(bt->smbwstrd, regs + SMBWSTRDR);
-		__raw_writel(bt->smbwstwr, regs + SMBWSTWRR);
-		__raw_writel(bt->smbwstoen, regs + SMBWSTOENR);
-		__raw_writel(bt->smbwstwen, regs + SMBWSTWENR);
-		__raw_writel(bt->smbwstbrd, regs + SMBWSTBRDR);
-	}
-}
-
-static inline unsigned int s3c2412_decode_timing(unsigned int clock, u32 reg)
-{
-	return (reg & 0xf) * clock;
-}
-
-static void s3c2412_iotiming_getbank(struct s3c_cpufreq_config *cfg,
-				     struct s3c2412_iobank_timing *bt,
-				     unsigned int bank)
-{
-	unsigned long clk = cfg->freq.hclk_tns;  /* ssmc clock??? */
-	void __iomem *regs = S3C2412_SSMC_BANK(bank);
-
-	bt->idcy = s3c2412_decode_timing(clk, __raw_readl(regs + SMBIDCYR));
-	bt->wstrd = s3c2412_decode_timing(clk, __raw_readl(regs + SMBWSTRDR));
-	bt->wstoen = s3c2412_decode_timing(clk, __raw_readl(regs + SMBWSTOENR));
-	bt->wstwen = s3c2412_decode_timing(clk, __raw_readl(regs + SMBWSTWENR));
-	bt->wstbrd = s3c2412_decode_timing(clk, __raw_readl(regs + SMBWSTBRDR));
-}
-
-/**
- * bank_is_io - return true if bank is (possibly) IO.
- * @bank: The bank number.
- * @bankcfg: The value of S3C2412_EBI_BANKCFG.
- */
-static inline bool bank_is_io(unsigned int bank, u32 bankcfg)
-{
-	if (bank < 2)
-		return true;
-
-	return !(bankcfg & (1 << bank));
-}
-
-int s3c2412_iotiming_get(struct s3c_cpufreq_config *cfg,
-			 struct s3c_iotimings *timings)
-{
-	struct s3c2412_iobank_timing *bt;
-	u32 bankcfg = __raw_readl(S3C2412_EBI_BANKCFG);
-	unsigned int bank;
-
-	/* look through all banks to see what is currently set. */
-
-	for (bank = 0; bank < MAX_BANKS; bank++) {
-		if (!bank_is_io(bank, bankcfg))
-			continue;
-
-		bt = kzalloc(sizeof(struct s3c2412_iobank_timing), GFP_KERNEL);
-		if (!bt) {
-			printk(KERN_ERR "%s: no memory for bank\n", __func__);
-			return -ENOMEM;
-		}
-
-		timings->bank[bank].io_2412 = bt;
-		s3c2412_iotiming_getbank(cfg, bt, bank);
-	}
-
-	s3c2412_print_timing("get", timings);
-	return 0;
-}
-
-/* this is in here as it is so small, it doesn't currently warrant a file
- * to itself. We expect that any s3c24xx needing this is going to also
- * need the iotiming support.
- */
-void s3c2412_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg)
-{
-	struct s3c_cpufreq_board *board = cfg->board;
-	u32 refresh;
-
-	WARN_ON(board == NULL);
-
-	/* Reduce both the refresh time (in ns) and the frequency (in MHz)
-	 * down 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 = (cfg->freq.hclk / 100) * (board->refresh / 10);
-	refresh = DIV_ROUND_UP(refresh, (1000 * 1000)); /* apply scale  */
-	refresh &= ((1 << 16) - 1);
-
-	s3c_freq_dbg("%s: refresh value %u\n", __func__, (unsigned int)refresh);
-
-	__raw_writel(refresh, S3C2412_REFRESH);
-}