1 files changed, 138 insertions, 785 deletions

diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
index 0e174af21874..40f859354f79 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
@@ -1,844 +1,197 @@
 /*
  * arch/sh/kernel/cpu/sh4a/clock-sh7722.c
  *
- * SH7343, SH7722, SH7723 & SH7366 support for the clock framework
+ * SH7722 clock framework support
  *
- * Copyright (c) 2006-2007 Nomad Global Solutions Inc
- * Based on code for sh7343 by Paul Mundt
+ * Copyright (C) 2009 Magnus Damm
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
+ * 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
+ *
+ * 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
  */
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/io.h>
-#include <linux/errno.h>
-#include <linux/stringify.h>
 #include <asm/clock.h>
-#include <asm/freq.h>
-
-#define N  (-1)
-#define NM (-2)
-#define ROUND_NEAREST 0
-#define ROUND_DOWN -1
-#define ROUND_UP   +1
-
-static int adjust_algos[][3] = {
-	{},	/* NO_CHANGE */
-	{ NM, N, 1 },   /* N:1, N:1 */
-	{ 3, 2, 2 },	/* 3:2:2 */
-	{ 5, 2, 2 },    /* 5:2:2 */
-	{ N, 1, 1 },	/* N:1:1 */
-
-	{ N, 1 },	/* N:1 */
 
-	{ N, 1 },	/* N:1 */
-	{ 3, 2 },
-	{ 4, 3 },
-	{ 5, 4 },
-
-	{ N, 1 }
+/* SH7722 registers */
+#define FRQCR		0xa4150000
+#define VCLKCR		0xa4150004
+#define SCLKACR		0xa4150008
+#define SCLKBCR		0xa415000c
+#define IRDACLKCR	0xa4150018
+#define PLLCR		0xa4150024
+#define MSTPCR0		0xa4150030
+#define MSTPCR1		0xa4150034
+#define MSTPCR2		0xa4150038
+#define DLLFRQ		0xa4150050
+
+/* Fixed 32 KHz root clock for RTC and Power Management purposes */
+static struct clk r_clk = {
+	.name           = "rclk",
+	.id             = -1,
+	.rate           = 32768,
 };
 
-static unsigned long adjust_pair_of_clocks(unsigned long r1, unsigned long r2,
-			int m1, int m2, int round_flag)
-{
-	unsigned long rem, div;
-	int the_one = 0;
-
-	pr_debug( "Actual values: r1 = %ld\n", r1);
-	pr_debug( "...............r2 = %ld\n", r2);
-
-	if (m1 == m2) {
-		r2 = r1;
-		pr_debug( "setting equal rates: r2 now %ld\n", r2);
-	} else if ((m2 == N  && m1 == 1) ||
-		   (m2 == NM && m1 == N)) { /* N:1 or NM:N */
-		pr_debug( "Setting rates as 1:N (N:N*M)\n");
-		rem = r2 % r1;
-		pr_debug( "...remainder = %ld\n", rem);
-		if (rem) {
-			div = r2 / r1;
-			pr_debug( "...div = %ld\n", div);
-			switch (round_flag) {
-			case ROUND_NEAREST:
-				the_one = rem >= r1/2 ? 1 : 0; break;
-			case ROUND_UP:
-				the_one = 1; break;
-			case ROUND_DOWN:
-				the_one = 0; break;
-			}
-
-			r2 = r1 * (div + the_one);
-			pr_debug( "...setting r2 to %ld\n", r2);
-		}
-	} else if ((m2 == 1  && m1 == N) ||
-		   (m2 == N && m1 == NM)) { /* 1:N or N:NM */
-		pr_debug( "Setting rates as N:1 (N*M:N)\n");
-		rem = r1 % r2;
-		pr_debug( "...remainder = %ld\n", rem);
-		if (rem) {
-			div = r1 / r2;
-			pr_debug( "...div = %ld\n", div);
-			switch (round_flag) {
-			case ROUND_NEAREST:
-				the_one = rem > r2/2 ? 1 : 0; break;
-			case ROUND_UP:
-				the_one = 0; break;
-			case ROUND_DOWN:
-				the_one = 1; break;
-			}
-
-			r2 = r1 / (div + the_one);
-			pr_debug( "...setting r2 to %ld\n", r2);
-		}
-	} else { /* value:value */
-		pr_debug( "Setting rates as %d:%d\n", m1, m2);
-		div = r1 / m1;
-		r2 = div * m2;
-		pr_debug( "...div = %ld\n", div);
-		pr_debug( "...setting r2 to %ld\n", r2);
-	}
-
-	return r2;
-}
-
-static void adjust_clocks(int originate, int *l, unsigned long v[],
-			  int n_in_line)
-{
-	int x;
-
-	pr_debug( "Go down from %d...\n", originate);
-	/* go up recalculation clocks */
-	for (x = originate; x>0; x -- )
-		v[x-1] = adjust_pair_of_clocks(v[x], v[x-1],
-					l[x], l[x-1],
-					ROUND_UP);
-
-	pr_debug( "Go up from %d...\n", originate);
-	/* go down recalculation clocks */
-	for (x = originate; x<n_in_line - 1; x ++ )
-		v[x+1] = adjust_pair_of_clocks(v[x], v[x+1],
-					l[x], l[x+1],
-					ROUND_UP);
-}
-
-
 /*
- * SH7722 uses a common set of multipliers and divisors, so this
- * is quite simple..
+ * Default rate for the root input clock, reset this with clk_set_rate()
+ * from the platform code.
  */
-
-/*
- * Instead of having two separate multipliers/divisors set, like this:
- *
- * static int multipliers[] = { 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
- * static int divisors[] = { 1, 3, 2, 5, 3, 4, 5, 6, 8, 10, 12, 16, 20 };
- *
- * I created the divisors2 array, which is used to calculate rate like
- *   rate = parent * 2 / divisors2[ divisor ];
-*/
-static int divisors2[] = { 2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 24, 32, 40 };
-
-static void master_clk_recalc(struct clk *clk)
-{
-	unsigned frqcr = ctrl_inl(FRQCR);
-
-	clk->rate = CONFIG_SH_PCLK_FREQ * (((frqcr >> 24) & 0x1f) + 1);
-}
-
-static void master_clk_init(struct clk *clk)
-{
-	clk->parent = NULL;
-	clk->flags |= CLK_RATE_PROPAGATES;
-	clk->rate = CONFIG_SH_PCLK_FREQ;
-	master_clk_recalc(clk);
-}
-
-
-static void module_clk_recalc(struct clk *clk)
-{
-	unsigned long frqcr = ctrl_inl(FRQCR);
-
-	clk->rate = clk->parent->rate / (((frqcr >> 24) & 0x1f) + 1);
-}
-
-static int master_clk_setrate(struct clk *clk, unsigned long rate, int id)
-{
-	int div = rate / clk->rate;
-	int master_divs[] = { 2, 3, 4, 6, 8, 16 };
-	int index;
-	unsigned long frqcr;
-
-	for (index = 1; index < ARRAY_SIZE(master_divs); index++)
-		if (div >= master_divs[index - 1] && div < master_divs[index])
-			break;
-
-	if (index >= ARRAY_SIZE(master_divs))
-		index = ARRAY_SIZE(master_divs);
-	div = master_divs[index - 1];
-
-	frqcr = ctrl_inl(FRQCR);
-	frqcr &= ~(0xF << 24);
-	frqcr |= ( (div-1) << 24);
-	ctrl_outl(frqcr, FRQCR);
-
-	return 0;
-}
-
-static struct clk_ops sh7722_master_clk_ops = {
-	.init = master_clk_init,
-	.recalc = master_clk_recalc,
-	.set_rate = master_clk_setrate,
-};
-
-static struct clk_ops sh7722_module_clk_ops = {
-       .recalc = module_clk_recalc,
-};
-
-struct frqcr_context {
-	unsigned mask;
-	unsigned shift;
-};
-
-struct frqcr_context sh7722_get_clk_context(const char *name)
-{
-	struct frqcr_context ctx = { 0, };
-
-	if (!strcmp(name, "peripheral_clk")) {
-		ctx.shift = 0;
-		ctx.mask = 0xF;
-	} else if (!strcmp(name, "sdram_clk")) {
-		ctx.shift = 4;
-		ctx.mask = 0xF;
-	} else if (!strcmp(name, "bus_clk")) {
-		ctx.shift = 8;
-		ctx.mask = 0xF;
-	} else if (!strcmp(name, "sh_clk")) {
-		ctx.shift = 12;
-		ctx.mask = 0xF;
-	} else if (!strcmp(name, "umem_clk")) {
-		ctx.shift = 16;
-		ctx.mask = 0xF;
-	} else if (!strcmp(name, "cpu_clk")) {
-		ctx.shift = 20;
-		ctx.mask = 7;
-	}
-	return ctx;
-}
-
-/**
- * sh7722_find_div_index - find divisor for setting rate
- *
- * All sh7722 clocks use the same set of multipliers/divisors. This function
- * chooses correct divisor to set the rate of clock with parent clock that
- * generates frequency of 'parent_rate'
- *
- * @parent_rate: rate of parent clock
- * @rate: requested rate to be set
- */
-static int sh7722_find_div_index(unsigned long parent_rate, unsigned rate)
-{
-	unsigned div2 = parent_rate * 2 / rate;
-	int index;
-
-	if (rate > parent_rate)
-		return -EINVAL;
-
-	for (index = 1; index < ARRAY_SIZE(divisors2); index++) {
-		if (div2 > divisors2[index - 1] && div2 <= divisors2[index])
-			break;
-	}
-	if (index >= ARRAY_SIZE(divisors2))
-		index = ARRAY_SIZE(divisors2) - 1;
-	return index;
-}
-
-static void sh7722_frqcr_recalc(struct clk *clk)
-{
-	struct frqcr_context ctx = sh7722_get_clk_context(clk->name);
-	unsigned long frqcr = ctrl_inl(FRQCR);
-	int index;
-
-	index = (frqcr >> ctx.shift) & ctx.mask;
-	clk->rate = clk->parent->rate * 2 / divisors2[index];
-}
-
-static int sh7722_frqcr_set_rate(struct clk *clk, unsigned long rate,
-				 int algo_id)
-{
-	struct frqcr_context ctx = sh7722_get_clk_context(clk->name);
-	unsigned long parent_rate = clk->parent->rate;
-	int div;
-	unsigned long frqcr;
-	int err = 0;
-
-	/* pretty invalid */
-	if (parent_rate < rate)
-		return -EINVAL;
-
-	/* look for multiplier/divisor pair */
-	div = sh7722_find_div_index(parent_rate, rate);
-	if (div<0)
-		return div;
-
-	/* calculate new value of clock rate */
-	clk->rate = parent_rate * 2 / divisors2[div];
-	frqcr = ctrl_inl(FRQCR);
-
-	/* FIXME: adjust as algo_id specifies */
-	if (algo_id != NO_CHANGE) {
-		int originator;
-		char *algo_group_1[] = { "cpu_clk", "umem_clk", "sh_clk" };
-		char *algo_group_2[] = { "sh_clk", "bus_clk" };
-		char *algo_group_3[] = { "sh_clk", "sdram_clk" };
-		char *algo_group_4[] = { "bus_clk", "peripheral_clk" };
-		char *algo_group_5[] = { "cpu_clk", "peripheral_clk" };
-		char **algo_current = NULL;
-		/* 3 is the maximum number of clocks in relation */
-		struct clk *ck[3];
-		unsigned long values[3]; /* the same comment as above */
-		int part_length = -1;
-		int i;
-
-		/*
-		 * all the steps below only required if adjustion was
-		 * requested
-		 */
-		if (algo_id == IUS_N1_N1 ||
-		    algo_id == IUS_322 ||
-		    algo_id == IUS_522 ||
-		    algo_id == IUS_N11) {
-			algo_current = algo_group_1;
-			part_length = 3;
-		}
-		if (algo_id == SB_N1) {
-			algo_current = algo_group_2;
-			part_length = 2;
-		}
-		if (algo_id == SB3_N1 ||
-		    algo_id == SB3_32 ||
-		    algo_id == SB3_43 ||
-		    algo_id == SB3_54) {
-			algo_current = algo_group_3;
-			part_length = 2;
-		}
-		if (algo_id == BP_N1) {
-			algo_current = algo_group_4;
-			part_length = 2;
-		}
-		if (algo_id == IP_N1) {
-			algo_current = algo_group_5;
-			part_length = 2;
-		}
-		if (!algo_current)
-			goto incorrect_algo_id;
-
-		originator = -1;
-		for (i = 0; i < part_length; i ++ ) {
-			if (originator >= 0 && !strcmp(clk->name,
-						       algo_current[i]))
-				originator = i;
-			ck[i] = clk_get(NULL, algo_current[i]);
-			values[i] = clk_get_rate(ck[i]);
-		}
-
-		if (originator >= 0)
-			adjust_clocks(originator, adjust_algos[algo_id],
-				      values, part_length);
-
-		for (i = 0; i < part_length; i ++ ) {
-			struct frqcr_context part_ctx;
-			int part_div;
-
-			if (likely(!err)) {
-				part_div = sh7722_find_div_index(parent_rate,
-								rate);
-				if (part_div > 0) {
-					part_ctx = sh7722_get_clk_context(
-								ck[i]->name);
-					frqcr &= ~(part_ctx.mask <<
-						   part_ctx.shift);
-					frqcr |= part_div << part_ctx.shift;
-				} else
-					err = part_div;
-			}
-
-			ck[i]->ops->recalc(ck[i]);
-			clk_put(ck[i]);
-		}
-	}
-
-	/* was there any error during recalculation ? If so, bail out.. */
-	if (unlikely(err!=0))
-		goto out_err;
-
-	/* clear FRQCR bits */
-	frqcr &= ~(ctx.mask << ctx.shift);
-	frqcr |= div << ctx.shift;
-
-	/* ...and perform actual change */
-	ctrl_outl(frqcr, FRQCR);
-	return 0;
-
-incorrect_algo_id:
-	return -EINVAL;
-out_err:
-	return err;
-}
-
-static long sh7722_frqcr_round_rate(struct clk *clk, unsigned long rate)
-{
-	unsigned long parent_rate = clk->parent->rate;
-	int div;
-
-	/* look for multiplier/divisor pair */
-	div = sh7722_find_div_index(parent_rate, rate);
-	if (div < 0)
-		return clk->rate;
-
-	/* calculate new value of clock rate */
-	return parent_rate * 2 / divisors2[div];
-}
-
-static struct clk_ops sh7722_frqcr_clk_ops = {
-	.recalc = sh7722_frqcr_recalc,
-	.set_rate = sh7722_frqcr_set_rate,
-	.round_rate = sh7722_frqcr_round_rate,
+struct clk extal_clk = {
+	.name		= "extal",
+	.id		= -1,
+	.rate		= 33333333,
 };
 
-/*
- * clock ops methods for SIU A/B and IrDA clock
- *
- */
-
-#ifndef CONFIG_CPU_SUBTYPE_SH7343
-
-static int sh7722_siu_set_rate(struct clk *clk, unsigned long rate, int algo_id)
-{
-	unsigned long r;
-	int div;
-
-	r = ctrl_inl(clk->arch_flags);
-	div = sh7722_find_div_index(clk->parent->rate, rate);
-	if (div < 0)
-		return div;
-	r = (r & ~0xF) | div;
-	ctrl_outl(r, clk->arch_flags);
-	return 0;
-}
-
-static void sh7722_siu_recalc(struct clk *clk)
-{
-	unsigned long r;
-
-	r = ctrl_inl(clk->arch_flags);
-	clk->rate = clk->parent->rate * 2 / divisors2[r & 0xF];
-}
-
-static int sh7722_siu_start_stop(struct clk *clk, int enable)
+/* The dll block multiplies the 32khz r_clk, may be used instead of extal */
+static unsigned long dll_recalc(struct clk *clk)
 {
-	unsigned long r;
+	unsigned long mult;
 
-	r = ctrl_inl(clk->arch_flags);
-	if (enable)
-		ctrl_outl(r & ~(1 << 8), clk->arch_flags);
+	if (__raw_readl(PLLCR) & 0x1000)
+		mult = __raw_readl(DLLFRQ);
 	else
-		ctrl_outl(r | (1 << 8), clk->arch_flags);
-	return 0;
-}
-
-static void sh7722_siu_enable(struct clk *clk)
-{
-	sh7722_siu_start_stop(clk, 1);
-}
+		mult = 0;
 
-static void sh7722_siu_disable(struct clk *clk)
-{
-	sh7722_siu_start_stop(clk, 0);
+	return clk->parent->rate * mult;
 }
 
-static struct clk_ops sh7722_siu_clk_ops = {
-	.recalc = sh7722_siu_recalc,
-	.set_rate = sh7722_siu_set_rate,
-	.enable = sh7722_siu_enable,
-	.disable = sh7722_siu_disable,
+static struct clk_ops dll_clk_ops = {
+	.recalc		= dll_recalc,
 };
 
-#endif /* CONFIG_CPU_SUBTYPE_SH7343 */
-
-static void sh7722_video_enable(struct clk *clk)
-{
-	unsigned long r;
-
-	r = ctrl_inl(VCLKCR);
-	ctrl_outl( r & ~(1<<8), VCLKCR);
-}
-
-static void sh7722_video_disable(struct clk *clk)
-{
-	unsigned long r;
-
-	r = ctrl_inl(VCLKCR);
-	ctrl_outl( r | (1<<8), VCLKCR);
-}
+static struct clk dll_clk = {
+	.name           = "dll_clk",
+	.id             = -1,
+	.ops		= &dll_clk_ops,
+	.parent		= &r_clk,
+	.flags		= CLK_ENABLE_ON_INIT,
+};
 
-static int sh7722_video_set_rate(struct clk *clk, unsigned long rate,
-				 int algo_id)
+static unsigned long pll_recalc(struct clk *clk)
 {
-	unsigned long r;
-
-	r = ctrl_inl(VCLKCR);
-	r &= ~0x3F;
-	r |= ((clk->parent->rate / rate - 1) & 0x3F);
-	ctrl_outl(r, VCLKCR);
-	return 0;
-}
+	unsigned long mult = 1;
+	unsigned long div = 1;
 
-static void sh7722_video_recalc(struct clk *clk)
-{
-	unsigned long r;
+	if (__raw_readl(PLLCR) & 0x4000)
+		mult = (((__raw_readl(FRQCR) >> 24) & 0x1f) + 1);
+	else
+		div = 2;
 
-	r = ctrl_inl(VCLKCR);
-	clk->rate = clk->parent->rate / ((r & 0x3F) + 1);
+	return (clk->parent->rate * mult) / div;
 }
 
-static struct clk_ops sh7722_video_clk_ops = {
-	.recalc = sh7722_video_recalc,
-	.set_rate = sh7722_video_set_rate,
-	.enable = sh7722_video_enable,
-	.disable = sh7722_video_disable,
-};
-/*
- * and at last, clock definitions themselves
- */
-static struct clk sh7722_umem_clock = {
-	.name = "umem_clk",
-	.ops = &sh7722_frqcr_clk_ops,
-	.flags = CLK_RATE_PROPAGATES,
+static struct clk_ops pll_clk_ops = {
+	.recalc		= pll_recalc,
 };
 
-static struct clk sh7722_sh_clock = {
-	.name = "sh_clk",
-	.ops = &sh7722_frqcr_clk_ops,
-	.flags = CLK_RATE_PROPAGATES,
+static struct clk pll_clk = {
+	.name		= "pll_clk",
+	.id		= -1,
+	.ops		= &pll_clk_ops,
+	.flags		= CLK_ENABLE_ON_INIT,
 };
 
-static struct clk sh7722_peripheral_clock = {
-	.name = "peripheral_clk",
-	.ops = &sh7722_frqcr_clk_ops,
-	.flags = CLK_RATE_PROPAGATES,
+struct clk *main_clks[] = {
+	&r_clk,
+	&extal_clk,
+	&dll_clk,
+	&pll_clk,
 };
 
-static struct clk sh7722_sdram_clock = {
-	.name = "sdram_clk",
-	.ops = &sh7722_frqcr_clk_ops,
-};
+static int multipliers[] = { 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
+static int divisors[] = { 1, 3, 2, 5, 3, 4, 5, 6, 8, 10, 12, 16, 20 };
 
-static struct clk sh7722_r_clock = {
-	.name = "r_clk",
-	.rate = 32768,
-	.flags = CLK_RATE_PROPAGATES,
+static struct clk_div_mult_table div4_table = {
+	.divisors = divisors,
+	.nr_divisors = ARRAY_SIZE(divisors),
+	.multipliers = multipliers,
+	.nr_multipliers = ARRAY_SIZE(multipliers),
 };
 
-#ifndef CONFIG_CPU_SUBTYPE_SH7343
-
-/*
- * these three clocks - SIU A, SIU B, IrDA - share the same clk_ops
- * methods of clk_ops determine which register they should access by
- * examining clk->name field
- */
-static struct clk sh7722_siu_a_clock = {
-	.name = "siu_a_clk",
-	.arch_flags = SCLKACR,
-	.ops = &sh7722_siu_clk_ops,
-};
+enum { DIV4_I, DIV4_U, DIV4_SH, DIV4_B, DIV4_B3, DIV4_P,
+       DIV4_SIUA, DIV4_SIUB, DIV4_IRDA, DIV4_NR };
 
-static struct clk sh7722_siu_b_clock = {
-	.name = "siu_b_clk",
-	.arch_flags = SCLKBCR,
-	.ops = &sh7722_siu_clk_ops,
-};
+#define DIV4(_str, _reg, _bit, _mask, _flags) \
+  SH_CLK_DIV4(_str, &pll_clk, _reg, _bit, _mask, _flags)
 
-#if defined(CONFIG_CPU_SUBTYPE_SH7722)
-static struct clk sh7722_irda_clock = {
-	.name = "irda_clk",
-	.arch_flags = IrDACLKCR,
-	.ops = &sh7722_siu_clk_ops,
+struct clk div4_clks[DIV4_NR] = {
+	[DIV4_I] = DIV4("cpu_clk", FRQCR, 20, 0x1fef, CLK_ENABLE_ON_INIT),
+	[DIV4_U] = DIV4("umem_clk", FRQCR, 16, 0x1fff, CLK_ENABLE_ON_INIT),
+	[DIV4_SH] = DIV4("shyway_clk", FRQCR, 12, 0x1fff, CLK_ENABLE_ON_INIT),
+	[DIV4_B] = DIV4("bus_clk", FRQCR, 8, 0x1fff, CLK_ENABLE_ON_INIT),
+	[DIV4_B3] = DIV4("b3_clk", FRQCR, 4, 0x1fff, CLK_ENABLE_ON_INIT),
+	[DIV4_P] = DIV4("peripheral_clk", FRQCR, 0, 0x1fff, 0),
+	[DIV4_SIUA] = DIV4("siua_clk", SCLKACR, 0, 0x1fff, 0),
+	[DIV4_SIUB] = DIV4("siub_clk", SCLKBCR, 0, 0x1fff, 0),
+	[DIV4_IRDA] = DIV4("irda_clk", IRDACLKCR, 0, 0x1fff, 0),
 };
-#endif
-#endif /* CONFIG_CPU_SUBTYPE_SH7343 */
 
-static struct clk sh7722_video_clock = {
-	.name = "video_clk",
-	.ops = &sh7722_video_clk_ops,
+struct clk div6_clks[] = {
+	SH_CLK_DIV6("video_clk", &pll_clk, VCLKCR, 0),
 };
 
-#define MSTPCR_ARCH_FLAGS(reg, bit) (((reg) << 8) | (bit))
-#define MSTPCR_ARCH_FLAGS_REG(value) ((value) >> 8)
-#define MSTPCR_ARCH_FLAGS_BIT(value) ((value) & 0xff)
-
-static int sh7722_mstpcr_start_stop(struct clk *clk, int enable)
-{
-	unsigned long bit = MSTPCR_ARCH_FLAGS_BIT(clk->arch_flags);
-	unsigned long reg;
-	unsigned long r;
-
-	switch(MSTPCR_ARCH_FLAGS_REG(clk->arch_flags)) {
-	case 0:
-		reg = MSTPCR0;
-		break;
-	case 1:
-		reg = MSTPCR1;
-		break;
-	case 2:
-		reg = MSTPCR2;
-		break;
-	default:
-		return -EINVAL;
-	}  
-
-	r = ctrl_inl(reg);
-
-	if (enable)
-		r &= ~(1 << bit);
-	else
-		r |= (1 << bit);
+#define MSTP(_str, _parent, _reg, _bit, _flags) \
+  SH_CLK_MSTP32(_str, -1, _parent, _reg, _bit, _flags)
 
-	ctrl_outl(r, reg);
-	return 0;
-}
+static struct clk mstp_clks[] = {
+	MSTP("uram0", &div4_clks[DIV4_U], MSTPCR0, 28, CLK_ENABLE_ON_INIT),
+	MSTP("xymem0", &div4_clks[DIV4_B], MSTPCR0, 26, CLK_ENABLE_ON_INIT),
+	MSTP("tmu0", &div4_clks[DIV4_P], MSTPCR0, 15, 0),
+	MSTP("cmt0", &r_clk, MSTPCR0, 14, 0),
+	MSTP("rwdt0", &r_clk, MSTPCR0, 13, 0),
+	MSTP("flctl0", &div4_clks[DIV4_P], MSTPCR0, 10, 0),
+	MSTP("scif0", &div4_clks[DIV4_P], MSTPCR0, 7, 0),
+	MSTP("scif1", &div4_clks[DIV4_P], MSTPCR0, 6, 0),
+	MSTP("scif2", &div4_clks[DIV4_P], MSTPCR0, 5, 0),
 
-static void sh7722_mstpcr_enable(struct clk *clk)
-{
-	sh7722_mstpcr_start_stop(clk, 1);
-}
+	MSTP("i2c0", &div4_clks[DIV4_P], MSTPCR1, 9, 0),
+	MSTP("rtc0", &r_clk, MSTPCR1, 8, 0),
 
-static void sh7722_mstpcr_disable(struct clk *clk)
-{
-	sh7722_mstpcr_start_stop(clk, 0);
-}
-
-static void sh7722_mstpcr_recalc(struct clk *clk)
-{
-	if (clk->parent)
-		clk->rate = clk->parent->rate;
-}
-
-static struct clk_ops sh7722_mstpcr_clk_ops = {
-	.enable = sh7722_mstpcr_enable,
-	.disable = sh7722_mstpcr_disable,
-	.recalc = sh7722_mstpcr_recalc,
-};
-
-#define MSTPCR(_name, _parent, regnr, bitnr) \
-{						\
-	.name = _name,				\
-	.arch_flags = MSTPCR_ARCH_FLAGS(regnr, bitnr),	\
-	.ops = (void *)_parent,		\
-}
-
-static struct clk sh7722_mstpcr_clocks[] = {
-#if defined(CONFIG_CPU_SUBTYPE_SH7722)
-	MSTPCR("uram0", "umem_clk", 0, 28),
-	MSTPCR("xymem0", "bus_clk", 0, 26),
-	MSTPCR("tmu0", "peripheral_clk", 0, 15),
-	MSTPCR("cmt0", "r_clk", 0, 14),
-	MSTPCR("rwdt0", "r_clk", 0, 13),
-	MSTPCR("flctl0", "peripheral_clk", 0, 10),
-	MSTPCR("scif0", "peripheral_clk", 0, 7),
-	MSTPCR("scif1", "peripheral_clk", 0, 6),
-	MSTPCR("scif2", "peripheral_clk", 0, 5),
-	MSTPCR("i2c0", "peripheral_clk", 1, 9),
-	MSTPCR("rtc0", "r_clk", 1, 8),
-	MSTPCR("sdhi0", "peripheral_clk", 2, 18),
-	MSTPCR("keysc0", "r_clk", 2, 14),
-	MSTPCR("usbf0", "peripheral_clk", 2, 11),
-	MSTPCR("2dg0", "bus_clk", 2, 9),
-	MSTPCR("siu0", "bus_clk", 2, 8),
-	MSTPCR("vou0", "bus_clk", 2, 5),
-	MSTPCR("jpu0", "bus_clk", 2, 6),
-	MSTPCR("beu0", "bus_clk", 2, 4),
-	MSTPCR("ceu0", "bus_clk", 2, 3),
-	MSTPCR("veu0", "bus_clk", 2, 2),
-	MSTPCR("vpu0", "bus_clk", 2, 1),
-	MSTPCR("lcdc0", "bus_clk", 2, 0),
-#endif
-#if defined(CONFIG_CPU_SUBTYPE_SH7723)
-	/* See page 60 of Datasheet V1.0: Overview -> Block Diagram */
-	MSTPCR("tlb0", "cpu_clk", 0, 31),
-	MSTPCR("ic0", "cpu_clk", 0, 30),
-	MSTPCR("oc0", "cpu_clk", 0, 29),
-	MSTPCR("l2c0", "sh_clk", 0, 28),
-	MSTPCR("ilmem0", "cpu_clk", 0, 27),
-	MSTPCR("fpu0", "cpu_clk", 0, 24),
-	MSTPCR("intc0", "cpu_clk", 0, 22),
-	MSTPCR("dmac0", "bus_clk", 0, 21),
-	MSTPCR("sh0", "sh_clk", 0, 20),
-	MSTPCR("hudi0", "peripheral_clk", 0, 19),
-	MSTPCR("ubc0", "cpu_clk", 0, 17),
-	MSTPCR("tmu0", "peripheral_clk", 0, 15),
-	MSTPCR("cmt0", "r_clk", 0, 14),
-	MSTPCR("rwdt0", "r_clk", 0, 13),
-	MSTPCR("dmac1", "bus_clk", 0, 12),
-	MSTPCR("tmu1", "peripheral_clk", 0, 11),
-	MSTPCR("flctl0", "peripheral_clk", 0, 10),
-	MSTPCR("scif0", "peripheral_clk", 0, 9),
-	MSTPCR("scif1", "peripheral_clk", 0, 8),
-	MSTPCR("scif2", "peripheral_clk", 0, 7),
-	MSTPCR("scif3", "bus_clk", 0, 6),
-	MSTPCR("scif4", "bus_clk", 0, 5),
-	MSTPCR("scif5", "bus_clk", 0, 4),
-	MSTPCR("msiof0", "bus_clk", 0, 2),
-	MSTPCR("msiof1", "bus_clk", 0, 1),
-	MSTPCR("meram0", "sh_clk", 0, 0),
-	MSTPCR("i2c0", "peripheral_clk", 1, 9),
-	MSTPCR("rtc0", "r_clk", 1, 8),
-	MSTPCR("atapi0", "sh_clk", 2, 28),
-	MSTPCR("adc0", "peripheral_clk", 2, 28),
-	MSTPCR("tpu0", "bus_clk", 2, 25),
-	MSTPCR("irda0", "peripheral_clk", 2, 24),
-	MSTPCR("tsif0", "bus_clk", 2, 22),
-	MSTPCR("icb0", "bus_clk", 2, 21),
-	MSTPCR("sdhi0", "bus_clk", 2, 18),
-	MSTPCR("sdhi1", "bus_clk", 2, 17),
-	MSTPCR("keysc0", "r_clk", 2, 14),
-	MSTPCR("usb0", "bus_clk", 2, 11),
-	MSTPCR("2dg0", "bus_clk", 2, 10),
-	MSTPCR("siu0", "bus_clk", 2, 8),
-	MSTPCR("veu1", "bus_clk", 2, 6),
-	MSTPCR("vou0", "bus_clk", 2, 5),
-	MSTPCR("beu0", "bus_clk", 2, 4),
-	MSTPCR("ceu0", "bus_clk", 2, 3),
-	MSTPCR("veu0", "bus_clk", 2, 2),
-	MSTPCR("vpu0", "bus_clk", 2, 1),
-	MSTPCR("lcdc0", "bus_clk", 2, 0),
-#endif
-#if defined(CONFIG_CPU_SUBTYPE_SH7343)
-	MSTPCR("uram0", "umem_clk", 0, 28),
-	MSTPCR("xymem0", "bus_clk", 0, 26),
-	MSTPCR("tmu0", "peripheral_clk", 0, 15),
-	MSTPCR("cmt0", "r_clk", 0, 14),
-	MSTPCR("rwdt0", "r_clk", 0, 13),
-	MSTPCR("scif0", "peripheral_clk", 0, 7),
-	MSTPCR("scif1", "peripheral_clk", 0, 6),
-	MSTPCR("scif2", "peripheral_clk", 0, 5),
-	MSTPCR("scif3", "peripheral_clk", 0, 4),
-	MSTPCR("i2c0", "peripheral_clk", 1, 9),
-	MSTPCR("i2c1", "peripheral_clk", 1, 8),
-	MSTPCR("sdhi0", "peripheral_clk", 2, 18),
-	MSTPCR("keysc0", "r_clk", 2, 14),
-	MSTPCR("usbf0", "peripheral_clk", 2, 11),
-	MSTPCR("siu0", "bus_clk", 2, 8),
-	MSTPCR("jpu0", "bus_clk", 2, 6),
-	MSTPCR("vou0", "bus_clk", 2, 5),
-	MSTPCR("beu0", "bus_clk", 2, 4),
-	MSTPCR("ceu0", "bus_clk", 2, 3),
-	MSTPCR("veu0", "bus_clk", 2, 2),
-	MSTPCR("vpu0", "bus_clk", 2, 1),
-	MSTPCR("lcdc0", "bus_clk", 2, 0),
-#endif
-#if defined(CONFIG_CPU_SUBTYPE_SH7366)
-	/* See page 52 of Datasheet V0.40: Overview -> Block Diagram */
-	MSTPCR("tlb0", "cpu_clk", 0, 31),
-	MSTPCR("ic0", "cpu_clk", 0, 30),
-	MSTPCR("oc0", "cpu_clk", 0, 29),
-	MSTPCR("rsmem0", "sh_clk", 0, 28),
-	MSTPCR("xymem0", "cpu_clk", 0, 26),
-	MSTPCR("intc30", "peripheral_clk", 0, 23),
-	MSTPCR("intc0", "peripheral_clk", 0, 22),
-	MSTPCR("dmac0", "bus_clk", 0, 21),
-	MSTPCR("sh0", "sh_clk", 0, 20),
-	MSTPCR("hudi0", "peripheral_clk", 0, 19),
-	MSTPCR("ubc0", "cpu_clk", 0, 17),
-	MSTPCR("tmu0", "peripheral_clk", 0, 15),
-	MSTPCR("cmt0", "r_clk", 0, 14),
-	MSTPCR("rwdt0", "r_clk", 0, 13),
-	MSTPCR("flctl0", "peripheral_clk", 0, 10),
-	MSTPCR("scif0", "peripheral_clk", 0, 7),
-	MSTPCR("scif1", "bus_clk", 0, 6),
-	MSTPCR("scif2", "bus_clk", 0, 5),
-	MSTPCR("msiof0", "peripheral_clk", 0, 2),
-	MSTPCR("sbr0", "peripheral_clk", 0, 1),
-	MSTPCR("i2c0", "peripheral_clk", 1, 9),
-	MSTPCR("icb0", "bus_clk", 2, 27),
-	MSTPCR("meram0", "sh_clk", 2, 26),
-	MSTPCR("dacc0", "peripheral_clk", 2, 24),
-	MSTPCR("dacy0", "peripheral_clk", 2, 23),
-	MSTPCR("tsif0", "bus_clk", 2, 22),
-	MSTPCR("sdhi0", "bus_clk", 2, 18),
-	MSTPCR("mmcif0", "bus_clk", 2, 17),
-	MSTPCR("usb0", "bus_clk", 2, 11),
-	MSTPCR("siu0", "bus_clk", 2, 8),
-	MSTPCR("veu1", "bus_clk", 2, 7),
-	MSTPCR("vou0", "bus_clk", 2, 5),
-	MSTPCR("beu0", "bus_clk", 2, 4),
-	MSTPCR("ceu0", "bus_clk", 2, 3),
-	MSTPCR("veu0", "bus_clk", 2, 2),
-	MSTPCR("vpu0", "bus_clk", 2, 1),
-	MSTPCR("lcdc0", "bus_clk", 2, 0),
-#endif
-};
-
-static struct clk *sh7722_clocks[] = {
-	&sh7722_umem_clock,
-	&sh7722_sh_clock,
-	&sh7722_peripheral_clock,
-	&sh7722_sdram_clock,
-#ifndef CONFIG_CPU_SUBTYPE_SH7343
-	&sh7722_siu_a_clock,
-	&sh7722_siu_b_clock,
-#if defined(CONFIG_CPU_SUBTYPE_SH7722)
-	&sh7722_irda_clock,
-#endif
-#endif
-	&sh7722_video_clock,
+	MSTP("sdhi0", &div4_clks[DIV4_P], MSTPCR2, 18, 0),
+	MSTP("keysc0", &r_clk, MSTPCR2, 14, 0),
+	MSTP("usbf0", &div4_clks[DIV4_P], MSTPCR2, 11, 0),
+	MSTP("2dg0", &div4_clks[DIV4_B], MSTPCR2, 9, 0),
+	MSTP("siu0", &div4_clks[DIV4_B], MSTPCR2, 8, 0),
+	MSTP("vou0", &div4_clks[DIV4_B], MSTPCR2, 5, 0),
+	MSTP("jpu0", &div4_clks[DIV4_B], MSTPCR2, 6, CLK_ENABLE_ON_INIT),
+	MSTP("beu0", &div4_clks[DIV4_B], MSTPCR2, 4, 0),
+	MSTP("ceu0", &div4_clks[DIV4_B], MSTPCR2, 3, 0),
+	MSTP("veu0", &div4_clks[DIV4_B], MSTPCR2, 2, CLK_ENABLE_ON_INIT),
+	MSTP("vpu0", &div4_clks[DIV4_B], MSTPCR2, 1, CLK_ENABLE_ON_INIT),
+	MSTP("lcdc0", &div4_clks[DIV4_B], MSTPCR2, 0, 0),
 };
 
-/*
- * init in order: master, module, bus, cpu
- */
-struct clk_ops *onchip_ops[] = {
-	&sh7722_master_clk_ops,
-	&sh7722_module_clk_ops,
-	&sh7722_frqcr_clk_ops,
-	&sh7722_frqcr_clk_ops,
-};
-
-void __init
-arch_init_clk_ops(struct clk_ops **ops, int type)
-{
-	BUG_ON(type < 0 || type > ARRAY_SIZE(onchip_ops));
-	*ops = onchip_ops[type];
-}
-
 int __init arch_clk_init(void)
 {
-	struct clk *clk;
-	int i;
+	int k, ret = 0;
+
+	/* autodetect extal or dll configuration */
+	if (__raw_readl(PLLCR) & 0x1000)
+		pll_clk.parent = &dll_clk;
+	else
+		pll_clk.parent = &extal_clk;
 
-	clk = clk_get(NULL, "master_clk");
-	for (i = 0; i < ARRAY_SIZE(sh7722_clocks); i++) {
-		pr_debug( "Registering clock '%s'\n", sh7722_clocks[i]->name);
-		sh7722_clocks[i]->parent = clk;
-		clk_register(sh7722_clocks[i]);
-	}
-	clk_put(clk);
+	for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
+		ret = clk_register(main_clks[k]);
 
-	clk_register(&sh7722_r_clock);
+	if (!ret)
+		ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
 
-	for (i = 0; i < ARRAY_SIZE(sh7722_mstpcr_clocks); i++) {
-		pr_debug( "Registering mstpcr clock '%s'\n",
-			  sh7722_mstpcr_clocks[i].name);
-		clk = clk_get(NULL, (void *) sh7722_mstpcr_clocks[i].ops);
-		sh7722_mstpcr_clocks[i].parent = clk;
-		sh7722_mstpcr_clocks[i].ops = &sh7722_mstpcr_clk_ops;
-		clk_register(&sh7722_mstpcr_clocks[i]);
-		clk_put(clk);
-	}
+	if (!ret)
+		ret = sh_clk_div6_register(div6_clks, ARRAY_SIZE(div6_clks));
 
-	clk_recalc_rate(&sh7722_r_clock); /* make sure rate gets propagated */
+	if (!ret)
+		ret = sh_clk_mstp32_register(mstp_clks, ARRAY_SIZE(mstp_clks));
 
-	return 0;
+	return ret;
 }