[linux-block.git] / arch / sh / kernel / cpu / sh4a / clock-sh7724.c

/*
 * arch/sh/kernel/cpu/sh4a/clock-sh7724.c
 *
 * SH7724 clock framework support
 *
 * Copyright (C) 2009 Magnus Damm
 *
 * 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/clk.h>
#include <linux/clkdev.h>
#include <linux/sh_clk.h>
#include <asm/clock.h>
#include <cpu/sh7724.h>

/* SH7724 registers */
#define FRQCRA		0xa4150000
#define FRQCRB		0xa4150004
#define VCLKCR		0xa4150048
#define FCLKACR		0xa4150008
#define FCLKBCR		0xa415000c
#define IRDACLKCR	0xa4150018
#define PLLCR		0xa4150024
#define MSTPCR0		0xa4150030
#define MSTPCR1		0xa4150034
#define MSTPCR2		0xa4150038
#define SPUCLKCR	0xa415003c
#define FLLFRQ		0xa4150050
#define LSTATS		0xa4150060

/* Fixed 32 KHz root clock for RTC and Power Management purposes */
static struct clk r_clk = {
	.rate           = 32768,
};

/*
 * Default rate for the root input clock, reset this with clk_set_rate()
 * from the platform code.
 */
static struct clk extal_clk = {
	.rate		= 33333333,
};

/* The fll multiplies the 32khz r_clk, may be used instead of extal */
static unsigned long fll_recalc(struct clk *clk)
{
	unsigned long mult = 0;
	unsigned long div = 1;

	if (__raw_readl(PLLCR) & 0x1000)
		mult = __raw_readl(FLLFRQ) & 0x3ff;

	if (__raw_readl(FLLFRQ) & 0x4000)
		div = 2;

	return (clk->parent->rate * mult) / div;
}

static struct clk_ops fll_clk_ops = {
	.recalc		= fll_recalc,
};

static struct clk fll_clk = {
	.ops		= &fll_clk_ops,
	.parent		= &r_clk,
	.flags		= CLK_ENABLE_ON_INIT,
};

static unsigned long pll_recalc(struct clk *clk)
{
	unsigned long mult = 1;

	if (__raw_readl(PLLCR) & 0x4000)
		mult = (((__raw_readl(FRQCRA) >> 24) & 0x3f) + 1) * 2;

	return clk->parent->rate * mult;
}

static struct clk_ops pll_clk_ops = {
	.recalc		= pll_recalc,
};

static struct clk pll_clk = {
	.ops		= &pll_clk_ops,
	.flags		= CLK_ENABLE_ON_INIT,
};

/* A fixed divide-by-3 block use by the div6 clocks */
static unsigned long div3_recalc(struct clk *clk)
{
	return clk->parent->rate / 3;
}

static struct clk_ops div3_clk_ops = {
	.recalc		= div3_recalc,
};

static struct clk div3_clk = {
	.ops		= &div3_clk_ops,
	.parent		= &pll_clk,
};

/* External input clock (pin name: FSIMCKA/FSIMCKB ) */
struct clk sh7724_fsimcka_clk = {
};

struct clk sh7724_fsimckb_clk = {
};

static struct clk *main_clks[] = {
	&r_clk,
	&extal_clk,
	&fll_clk,
	&pll_clk,
	&div3_clk,
	&sh7724_fsimcka_clk,
	&sh7724_fsimckb_clk,
};

static void div4_kick(struct clk *clk)
{
	unsigned long value;

	/* set KICK bit in FRQCRA to update hardware setting */
	value = __raw_readl(FRQCRA);
	value |= (1 << 31);
	__raw_writel(value, FRQCRA);
}

static int divisors[] = { 2, 3, 4, 6, 8, 12, 16, 0, 24, 32, 36, 48, 0, 72 };

static struct clk_div_mult_table div4_div_mult_table = {
	.divisors = divisors,
	.nr_divisors = ARRAY_SIZE(divisors),
};

static struct clk_div4_table div4_table = {
	.div_mult_table = &div4_div_mult_table,
	.kick = div4_kick,
};

enum { DIV4_I, DIV4_SH, DIV4_B, DIV4_P, DIV4_M1, DIV4_NR };

#define DIV4(_reg, _bit, _mask, _flags) \
  SH_CLK_DIV4(&pll_clk, _reg, _bit, _mask, _flags)

struct clk div4_clks[DIV4_NR] = {
	[DIV4_I] = DIV4(FRQCRA, 20, 0x2f7d, CLK_ENABLE_ON_INIT),
	[DIV4_SH] = DIV4(FRQCRA, 12, 0x2f7c, CLK_ENABLE_ON_INIT),
	[DIV4_B] = DIV4(FRQCRA, 8, 0x2f7c, CLK_ENABLE_ON_INIT),
	[DIV4_P] = DIV4(FRQCRA, 0, 0x2f7c, 0),
	[DIV4_M1] = DIV4(FRQCRB, 4, 0x2f7c, CLK_ENABLE_ON_INIT),
};

enum { DIV6_V, DIV6_I, DIV6_S, DIV6_NR };

static struct clk div6_clks[DIV6_NR] = {
	[DIV6_V] = SH_CLK_DIV6(&div3_clk, VCLKCR, 0),
	[DIV6_I] = SH_CLK_DIV6(&div3_clk, IRDACLKCR, 0),
	[DIV6_S] = SH_CLK_DIV6(&div3_clk, SPUCLKCR, CLK_ENABLE_ON_INIT),
};

enum { DIV6_FA, DIV6_FB, DIV6_REPARENT_NR };

/* Indices are important - they are the actual src selecting values */
static struct clk *fclkacr_parent[] = {
	[0] = &div3_clk,
	[1] = NULL,
	[2] = &sh7724_fsimcka_clk,
	[3] = NULL,
};

static struct clk *fclkbcr_parent[] = {
	[0] = &div3_clk,
	[1] = NULL,
	[2] = &sh7724_fsimckb_clk,
	[3] = NULL,
};

static struct clk div6_reparent_clks[DIV6_REPARENT_NR] = {
	[DIV6_FA] = SH_CLK_DIV6_EXT(&div3_clk, FCLKACR, 0,
				      fclkacr_parent, ARRAY_SIZE(fclkacr_parent), 6, 2),
	[DIV6_FB] = SH_CLK_DIV6_EXT(&div3_clk, FCLKBCR, 0,
				      fclkbcr_parent, ARRAY_SIZE(fclkbcr_parent), 6, 2),
};

static struct clk mstp_clks[HWBLK_NR] = {
	[HWBLK_TLB] = SH_CLK_MSTP32(&div4_clks[DIV4_I],	    MSTPCR0, 31, CLK_ENABLE_ON_INIT),
	[HWBLK_IC] = SH_CLK_MSTP32(&div4_clks[DIV4_I],	    MSTPCR0, 30, CLK_ENABLE_ON_INIT),
	[HWBLK_OC] = SH_CLK_MSTP32(&div4_clks[DIV4_I],	    MSTPCR0, 29, CLK_ENABLE_ON_INIT),
	[HWBLK_RSMEM] = SH_CLK_MSTP32(&div4_clks[DIV4_B],   MSTPCR0, 28, CLK_ENABLE_ON_INIT),
	[HWBLK_ILMEM] = SH_CLK_MSTP32(&div4_clks[DIV4_I],   MSTPCR0, 27, CLK_ENABLE_ON_INIT),
	[HWBLK_L2C] = SH_CLK_MSTP32(&div4_clks[DIV4_SH],    MSTPCR0, 26, CLK_ENABLE_ON_INIT),
	[HWBLK_FPU] = SH_CLK_MSTP32(&div4_clks[DIV4_I],	    MSTPCR0, 24, CLK_ENABLE_ON_INIT),
	[HWBLK_INTC] = SH_CLK_MSTP32(&div4_clks[DIV4_P],    MSTPCR0, 22, CLK_ENABLE_ON_INIT),
	[HWBLK_DMAC0] = SH_CLK_MSTP32(&div4_clks[DIV4_B],   MSTPCR0, 21, 0),
	[HWBLK_SHYWAY] = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR0, 20, CLK_ENABLE_ON_INIT),
	[HWBLK_HUDI] = SH_CLK_MSTP32(&div4_clks[DIV4_P],    MSTPCR0, 19, 0),
	[HWBLK_UBC] = SH_CLK_MSTP32(&div4_clks[DIV4_I],     MSTPCR0, 17, 0),
	[HWBLK_TMU0] = SH_CLK_MSTP32(&div4_clks[DIV4_P],    MSTPCR0, 15, 0),
	[HWBLK_CMT] = SH_CLK_MSTP32(&r_clk,		    MSTPCR0, 14, 0),
	[HWBLK_RWDT] = SH_CLK_MSTP32(&r_clk,		    MSTPCR0, 13, 0),
	[HWBLK_DMAC1] = SH_CLK_MSTP32(&div4_clks[DIV4_B],   MSTPCR0, 12, 0),
	[HWBLK_TMU1] = SH_CLK_MSTP32(&div4_clks[DIV4_P],    MSTPCR0, 10, 0),
	[HWBLK_SCIF0] = SH_CLK_MSTP32(&div4_clks[DIV4_P],   MSTPCR0, 9, 0),
	[HWBLK_SCIF1] = SH_CLK_MSTP32(&div4_clks[DIV4_P],   MSTPCR0, 8, 0),
	[HWBLK_SCIF2] = SH_CLK_MSTP32(&div4_clks[DIV4_P],   MSTPCR0, 7, 0),
	[HWBLK_SCIF3] = SH_CLK_MSTP32(&div4_clks[DIV4_B],   MSTPCR0, 6, 0),
	[HWBLK_SCIF4] = SH_CLK_MSTP32(&div4_clks[DIV4_B],   MSTPCR0, 5, 0),
	[HWBLK_SCIF5] = SH_CLK_MSTP32(&div4_clks[DIV4_B],   MSTPCR0, 4, 0),
	[HWBLK_MSIOF0] = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR0, 2, 0),
	[HWBLK_MSIOF1] = SH_CLK_MSTP32(&div4_clks[DIV4_B],  MSTPCR0, 1, 0),

	[HWBLK_KEYSC] = SH_CLK_MSTP32(&r_clk,		    MSTPCR1, 12, 0),
	[HWBLK_RTC] = SH_CLK_MSTP32(&r_clk,		    MSTPCR1, 11, 0),
	[HWBLK_IIC0] = SH_CLK_MSTP32(&div4_clks[DIV4_P],    MSTPCR1, 9, 0),
	[HWBLK_IIC1] = SH_CLK_MSTP32(&div4_clks[DIV4_P],    MSTPCR1, 8, 0),

	[HWBLK_MMC] = SH_CLK_MSTP32(&div4_clks[DIV4_B],	    MSTPCR2, 29, 0),
	[HWBLK_ETHER] = SH_CLK_MSTP32(&div4_clks[DIV4_B],   MSTPCR2, 28, 0),
	[HWBLK_ATAPI] = SH_CLK_MSTP32(&div4_clks[DIV4_B],   MSTPCR2, 26, 0),
	[HWBLK_TPU] = SH_CLK_MSTP32(&div4_clks[DIV4_B],	    MSTPCR2, 25, 0),
	[HWBLK_IRDA] = SH_CLK_MSTP32(&div4_clks[DIV4_P],    MSTPCR2, 24, 0),
	[HWBLK_TSIF] = SH_CLK_MSTP32(&div4_clks[DIV4_B],    MSTPCR2, 22, 0),
	[HWBLK_USB1] = SH_CLK_MSTP32(&div4_clks[DIV4_B],    MSTPCR2, 21, 0),
	[HWBLK_USB0] = SH_CLK_MSTP32(&div4_clks[DIV4_B],    MSTPCR2, 20, 0),
	[HWBLK_2DG] = SH_CLK_MSTP32(&div4_clks[DIV4_B],	    MSTPCR2, 19, 0),
	[HWBLK_SDHI0] = SH_CLK_MSTP32(&div4_clks[DIV4_B],   MSTPCR2, 18, 0),
	[HWBLK_SDHI1] = SH_CLK_MSTP32(&div4_clks[DIV4_B],   MSTPCR2, 17, 0),
	[HWBLK_VEU1] = SH_CLK_MSTP32(&div4_clks[DIV4_B],    MSTPCR2, 15, 0),
	[HWBLK_CEU1] = SH_CLK_MSTP32(&div4_clks[DIV4_B],    MSTPCR2, 13, 0),
	[HWBLK_BEU1] = SH_CLK_MSTP32(&div4_clks[DIV4_B],    MSTPCR2, 12, 0),
	[HWBLK_2DDMAC] = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR2, 10, 0),
	[HWBLK_SPU] = SH_CLK_MSTP32(&div4_clks[DIV4_B],	    MSTPCR2, 9, 0),
	[HWBLK_JPU] = SH_CLK_MSTP32(&div4_clks[DIV4_B],	    MSTPCR2, 6, 0),
	[HWBLK_VOU] = SH_CLK_MSTP32(&div4_clks[DIV4_B],	    MSTPCR2, 5, 0),
	[HWBLK_BEU0] = SH_CLK_MSTP32(&div4_clks[DIV4_B],    MSTPCR2, 4, 0),
	[HWBLK_CEU0] = SH_CLK_MSTP32(&div4_clks[DIV4_B],    MSTPCR2, 3, 0),
	[HWBLK_VEU0] = SH_CLK_MSTP32(&div4_clks[DIV4_B],    MSTPCR2, 2, 0),
	[HWBLK_VPU] = SH_CLK_MSTP32(&div4_clks[DIV4_B],	    MSTPCR2, 1, 0),
	[HWBLK_LCDC] = SH_CLK_MSTP32(&div4_clks[DIV4_B],    MSTPCR2, 0, 0),
};

static struct clk_lookup lookups[] = {
	/* main clocks */
	CLKDEV_CON_ID("rclk", &r_clk),
	CLKDEV_CON_ID("extal", &extal_clk),
	CLKDEV_CON_ID("fll_clk", &fll_clk),
	CLKDEV_CON_ID("pll_clk", &pll_clk),
	CLKDEV_CON_ID("div3_clk", &div3_clk),

	/* DIV4 clocks */
	CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
	CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_SH]),
	CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_B]),
	CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
	CLKDEV_CON_ID("vpu_clk", &div4_clks[DIV4_M1]),

	/* DIV6 clocks */
	CLKDEV_CON_ID("video_clk", &div6_clks[DIV6_V]),
	CLKDEV_CON_ID("fsia_clk", &div6_reparent_clks[DIV6_FA]),
	CLKDEV_CON_ID("fsib_clk", &div6_reparent_clks[DIV6_FB]),
	CLKDEV_CON_ID("irda_clk", &div6_clks[DIV6_I]),
	CLKDEV_CON_ID("spu_clk", &div6_clks[DIV6_S]),

	/* MSTP clocks */
	CLKDEV_CON_ID("tlb0", &mstp_clks[HWBLK_TLB]),
	CLKDEV_CON_ID("ic0", &mstp_clks[HWBLK_IC]),
	CLKDEV_CON_ID("oc0", &mstp_clks[HWBLK_OC]),
	CLKDEV_CON_ID("rs0", &mstp_clks[HWBLK_RSMEM]),
	CLKDEV_CON_ID("ilmem0", &mstp_clks[HWBLK_ILMEM]),
	CLKDEV_CON_ID("l2c0", &mstp_clks[HWBLK_L2C]),
	CLKDEV_CON_ID("fpu0", &mstp_clks[HWBLK_FPU]),
	CLKDEV_CON_ID("intc0", &mstp_clks[HWBLK_INTC]),
	CLKDEV_DEV_ID("sh-dma-engine.0", &mstp_clks[HWBLK_DMAC0]),
	CLKDEV_CON_ID("sh0", &mstp_clks[HWBLK_SHYWAY]),
	CLKDEV_CON_ID("hudi0", &mstp_clks[HWBLK_HUDI]),
	CLKDEV_CON_ID("ubc0", &mstp_clks[HWBLK_UBC]),

	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.0", &mstp_clks[HWBLK_TMU0]),
	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.1", &mstp_clks[HWBLK_TMU0]),
	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.2", &mstp_clks[HWBLK_TMU0]),
	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.3", &mstp_clks[HWBLK_TMU1]),

	CLKDEV_CON_ID("cmt_fck", &mstp_clks[HWBLK_CMT]),
	CLKDEV_DEV_ID("sh-wdt.0", &mstp_clks[HWBLK_RWDT]),
	CLKDEV_DEV_ID("sh-dma-engine.1", &mstp_clks[HWBLK_DMAC1]),

	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.4", &mstp_clks[HWBLK_TMU1]),
	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.5", &mstp_clks[HWBLK_TMU1]),
	CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[HWBLK_SCIF0]),
	CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[HWBLK_SCIF1]),
	CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[HWBLK_SCIF2]),
	CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[HWBLK_SCIF3]),
	CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[HWBLK_SCIF4]),
	CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[HWBLK_SCIF5]),

	CLKDEV_DEV_ID("spi_sh_msiof.0", &mstp_clks[HWBLK_MSIOF0]),
	CLKDEV_DEV_ID("spi_sh_msiof.1", &mstp_clks[HWBLK_MSIOF1]),
	CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[HWBLK_KEYSC]),
	CLKDEV_CON_ID("rtc0", &mstp_clks[HWBLK_RTC]),
	CLKDEV_DEV_ID("i2c-sh_mobile.0", &mstp_clks[HWBLK_IIC0]),
	CLKDEV_DEV_ID("i2c-sh_mobile.1", &mstp_clks[HWBLK_IIC1]),
	CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[HWBLK_MMC]),
	CLKDEV_DEV_ID("sh-eth.0", &mstp_clks[HWBLK_ETHER]),
	CLKDEV_CON_ID("atapi0", &mstp_clks[HWBLK_ATAPI]),
	CLKDEV_CON_ID("tpu0", &mstp_clks[HWBLK_TPU]),
	CLKDEV_CON_ID("irda0", &mstp_clks[HWBLK_IRDA]),
	CLKDEV_CON_ID("tsif0", &mstp_clks[HWBLK_TSIF]),
	CLKDEV_CON_ID("usb1", &mstp_clks[HWBLK_USB1]),
	CLKDEV_CON_ID("usb0", &mstp_clks[HWBLK_USB0]),
	CLKDEV_CON_ID("2dg0", &mstp_clks[HWBLK_2DG]),
	CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[HWBLK_SDHI0]),
	CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[HWBLK_SDHI1]),
	CLKDEV_CON_ID("veu1", &mstp_clks[HWBLK_VEU1]),
	CLKDEV_DEV_ID("sh_mobile_ceu.1", &mstp_clks[HWBLK_CEU1]),
	CLKDEV_CON_ID("beu1", &mstp_clks[HWBLK_BEU1]),
	CLKDEV_CON_ID("2ddmac0", &mstp_clks[HWBLK_2DDMAC]),
	CLKDEV_CON_ID("spu0", &mstp_clks[HWBLK_SPU]),
	CLKDEV_CON_ID("jpu0", &mstp_clks[HWBLK_JPU]),
	CLKDEV_DEV_ID("sh-vou.0", &mstp_clks[HWBLK_VOU]),
	CLKDEV_CON_ID("beu0", &mstp_clks[HWBLK_BEU0]),
	CLKDEV_DEV_ID("sh_mobile_ceu.0", &mstp_clks[HWBLK_CEU0]),
	CLKDEV_CON_ID("veu0", &mstp_clks[HWBLK_VEU0]),
	CLKDEV_CON_ID("vpu0", &mstp_clks[HWBLK_VPU]),
	CLKDEV_DEV_ID("sh_mobile_lcdc_fb.0", &mstp_clks[HWBLK_LCDC]),
};

int __init arch_clk_init(void)
{
	int k, ret = 0;

	/* autodetect extal or fll configuration */
	if (__raw_readl(PLLCR) & 0x1000)
		pll_clk.parent = &fll_clk;
	else
		pll_clk.parent = &extal_clk;

	for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
		ret = clk_register(main_clks[k]);

	clkdev_add_table(lookups, ARRAY_SIZE(lookups));

	if (!ret)
		ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);

	if (!ret)
		ret = sh_clk_div6_register(div6_clks, DIV6_NR);

	if (!ret)
		ret = sh_clk_div6_reparent_register(div6_reparent_clks, DIV6_REPARENT_NR);

	if (!ret)
		ret = sh_clk_mstp32_register(mstp_clks, HWBLK_NR);

	return ret;
}
Commit	Line	Data
b621370a MD	1	/*
	2	* arch/sh/kernel/cpu/sh4a/clock-sh7724.c
	3	*
	4	* SH7724 clock framework support
	5	*
	6	* Copyright (C) 2009 Magnus Damm
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*/
	21	#include <linux/init.h>
	22	#include <linux/kernel.h>
	23	#include <linux/io.h>
f4cff0d0	24	#include <linux/clk.h>
6d803ba7	25	#include <linux/clkdev.h>
8cc88a55	26	#include <linux/sh_clk.h>
b621370a	27	#include <asm/clock.h>
6ba4a8f0	28	#include <cpu/sh7724.h>
b621370a MD	29
	30	/* SH7724 registers */
	31	#define FRQCRA 0xa4150000
	32	#define FRQCRB 0xa4150004
	33	#define VCLKCR 0xa4150048
	34	#define FCLKACR 0xa4150008
	35	#define FCLKBCR 0xa415000c
	36	#define IRDACLKCR 0xa4150018
	37	#define PLLCR 0xa4150024
8cc88a55 GL	38	#define MSTPCR0 0xa4150030
	39	#define MSTPCR1 0xa4150034
	40	#define MSTPCR2 0xa4150038
b621370a MD	41	#define SPUCLKCR 0xa415003c
	42	#define FLLFRQ 0xa4150050
	43	#define LSTATS 0xa4150060
	44
	45	/* Fixed 32 KHz root clock for RTC and Power Management purposes */
	46	static struct clk r_clk = {
b621370a MD	47	.rate = 32768,
	48	};
	49
	50	/*
	51	* Default rate for the root input clock, reset this with clk_set_rate()
	52	* from the platform code.
	53	*/
d0013c9e	54	static struct clk extal_clk = {
b621370a MD	55	.rate = 33333333,
	56	};
	57
	58	/* The fll multiplies the 32khz r_clk, may be used instead of extal */
	59	static unsigned long fll_recalc(struct clk *clk)
	60	{
	61	unsigned long mult = 0;
	62	unsigned long div = 1;
	63
	64	if (__raw_readl(PLLCR) & 0x1000)
	65	mult = __raw_readl(FLLFRQ) & 0x3ff;
	66
	67	if (__raw_readl(FLLFRQ) & 0x4000)
	68	div = 2;
	69
	70	return (clk->parent->rate * mult) / div;
	71	}
	72
	73	static struct clk_ops fll_clk_ops = {
	74	.recalc = fll_recalc,
	75	};
	76
	77	static struct clk fll_clk = {
b621370a MD	78	.ops = &fll_clk_ops,
	79	.parent = &r_clk,
	80	.flags = CLK_ENABLE_ON_INIT,
	81	};
	82
	83	static unsigned long pll_recalc(struct clk *clk)
	84	{
	85	unsigned long mult = 1;
	86
	87	if (__raw_readl(PLLCR) & 0x4000)
	88	mult = (((__raw_readl(FRQCRA) >> 24) & 0x3f) + 1) * 2;
	89
	90	return clk->parent->rate * mult;
	91	}
	92
	93	static struct clk_ops pll_clk_ops = {
	94	.recalc = pll_recalc,
	95	};
	96
	97	static struct clk pll_clk = {
b621370a MD	98	.ops = &pll_clk_ops,
	99	.flags = CLK_ENABLE_ON_INIT,
	100	};
	101
	102	/* A fixed divide-by-3 block use by the div6 clocks */
	103	static unsigned long div3_recalc(struct clk *clk)
	104	{
	105	return clk->parent->rate / 3;
	106	}
	107
	108	static struct clk_ops div3_clk_ops = {
	109	.recalc = div3_recalc,
	110	};
	111
	112	static struct clk div3_clk = {
b621370a MD	113	.ops = &div3_clk_ops,
	114	.parent = &pll_clk,
	115	};
	116
4bd5d259 KM	117	/* External input clock (pin name: FSIMCKA/FSIMCKB ) */
	118	struct clk sh7724_fsimcka_clk = {
	119	};
	120
	121	struct clk sh7724_fsimckb_clk = {
	122	};
	123
d0013c9e	124	static struct clk *main_clks[] = {
b621370a MD	125	&r_clk,
	126	&extal_clk,
	127	&fll_clk,
	128	&pll_clk,
	129	&div3_clk,
4bd5d259 KM	130	&sh7724_fsimcka_clk,
4bd5d259 KM	131	&sh7724_fsimckb_clk,
b621370a MD	132	};
b621370a MD	133
7be85c6e MD	134	static void div4_kick(struct clk *clk)
	135	{
	136	unsigned long value;
	137
	138	/* set KICK bit in FRQCRA to update hardware setting */
	139	value = __raw_readl(FRQCRA);
	140	value \|= (1 << 31);
	141	__raw_writel(value, FRQCRA);
	142	}
	143
b2ea8b42	144	static int divisors[] = { 2, 3, 4, 6, 8, 12, 16, 0, 24, 32, 36, 48, 0, 72 };
b621370a	145
0a5f337e	146	static struct clk_div_mult_table div4_div_mult_table = {
b621370a MD	147	.divisors = divisors,
	148	.nr_divisors = ARRAY_SIZE(divisors),
	149	};
	150
0a5f337e MD	151	static struct clk_div4_table div4_table = {
0a5f337e MD	152	.div_mult_table = &div4_div_mult_table,
7be85c6e	153	.kick = div4_kick,
0a5f337e MD	154	};
0a5f337e MD	155
b621370a MD	156	enum { DIV4_I, DIV4_SH, DIV4_B, DIV4_P, DIV4_M1, DIV4_NR };
b621370a MD	157
914ebf0b MD	158	#define DIV4(_reg, _bit, _mask, _flags) \
914ebf0b MD	159	SH_CLK_DIV4(&pll_clk, _reg, _bit, _mask, _flags)
b621370a MD	160
b621370a MD	161	struct clk div4_clks[DIV4_NR] = {
914ebf0b MD	162	[DIV4_I] = DIV4(FRQCRA, 20, 0x2f7d, CLK_ENABLE_ON_INIT),
	163	[DIV4_SH] = DIV4(FRQCRA, 12, 0x2f7c, CLK_ENABLE_ON_INIT),
	164	[DIV4_B] = DIV4(FRQCRA, 8, 0x2f7c, CLK_ENABLE_ON_INIT),
	165	[DIV4_P] = DIV4(FRQCRA, 0, 0x2f7c, 0),
	166	[DIV4_M1] = DIV4(FRQCRB, 4, 0x2f7c, CLK_ENABLE_ON_INIT),
b621370a MD	167	};
b621370a MD	168
4bd5d259	169	enum { DIV6_V, DIV6_I, DIV6_S, DIV6_NR };
098ec49b	170
d0013c9e	171	static struct clk div6_clks[DIV6_NR] = {
9e1985e1	172	[DIV6_V] = SH_CLK_DIV6(&div3_clk, VCLKCR, 0),
9e1985e1 MD	173	[DIV6_I] = SH_CLK_DIV6(&div3_clk, IRDACLKCR, 0),
9e1985e1 MD	174	[DIV6_S] = SH_CLK_DIV6(&div3_clk, SPUCLKCR, CLK_ENABLE_ON_INIT),
b621370a MD	175	};
b621370a MD	176
4bd5d259 KM	177	enum { DIV6_FA, DIV6_FB, DIV6_REPARENT_NR };
	178
	179	/* Indices are important - they are the actual src selecting values */
	180	static struct clk *fclkacr_parent[] = {
	181	[0] = &div3_clk,
	182	[1] = NULL,
	183	[2] = &sh7724_fsimcka_clk,
	184	[3] = NULL,
	185	};
	186
	187	static struct clk *fclkbcr_parent[] = {
	188	[0] = &div3_clk,
	189	[1] = NULL,
	190	[2] = &sh7724_fsimckb_clk,
	191	[3] = NULL,
	192	};
	193
	194	static struct clk div6_reparent_clks[DIV6_REPARENT_NR] = {
	195	[DIV6_FA] = SH_CLK_DIV6_EXT(&div3_clk, FCLKACR, 0,
	196	fclkacr_parent, ARRAY_SIZE(fclkacr_parent), 6, 2),
	197	[DIV6_FB] = SH_CLK_DIV6_EXT(&div3_clk, FCLKBCR, 0,
	198	fclkbcr_parent, ARRAY_SIZE(fclkbcr_parent), 6, 2),
	199	};
	200
f3d51e13	201	static struct clk mstp_clks[HWBLK_NR] = {
8cc88a55 GL	202	[HWBLK_TLB] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 31, CLK_ENABLE_ON_INIT),
	203	[HWBLK_IC] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 30, CLK_ENABLE_ON_INIT),
	204	[HWBLK_OC] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 29, CLK_ENABLE_ON_INIT),
	205	[HWBLK_RSMEM] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 28, CLK_ENABLE_ON_INIT),
	206	[HWBLK_ILMEM] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 27, CLK_ENABLE_ON_INIT),
	207	[HWBLK_L2C] = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR0, 26, CLK_ENABLE_ON_INIT),
	208	[HWBLK_FPU] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 24, CLK_ENABLE_ON_INIT),
	209	[HWBLK_INTC] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 22, CLK_ENABLE_ON_INIT),
	210	[HWBLK_DMAC0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 21, 0),
	211	[HWBLK_SHYWAY] = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR0, 20, CLK_ENABLE_ON_INIT),
	212	[HWBLK_HUDI] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 19, 0),
	213	[HWBLK_UBC] = SH_CLK_MSTP32(&div4_clks[DIV4_I], MSTPCR0, 17, 0),
	214	[HWBLK_TMU0] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 15, 0),
	215	[HWBLK_CMT] = SH_CLK_MSTP32(&r_clk, MSTPCR0, 14, 0),
	216	[HWBLK_RWDT] = SH_CLK_MSTP32(&r_clk, MSTPCR0, 13, 0),
	217	[HWBLK_DMAC1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 12, 0),
	218	[HWBLK_TMU1] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 10, 0),
	219	[HWBLK_SCIF0] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 9, 0),
	220	[HWBLK_SCIF1] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 8, 0),
	221	[HWBLK_SCIF2] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 7, 0),
	222	[HWBLK_SCIF3] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 6, 0),
	223	[HWBLK_SCIF4] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 5, 0),
	224	[HWBLK_SCIF5] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 4, 0),
	225	[HWBLK_MSIOF0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 2, 0),
	226	[HWBLK_MSIOF1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR0, 1, 0),
	227
	228	[HWBLK_KEYSC] = SH_CLK_MSTP32(&r_clk, MSTPCR1, 12, 0),
	229	[HWBLK_RTC] = SH_CLK_MSTP32(&r_clk, MSTPCR1, 11, 0),
	230	[HWBLK_IIC0] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 9, 0),
	231	[HWBLK_IIC1] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 8, 0),
	232
	233	[HWBLK_MMC] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 29, 0),
	234	[HWBLK_ETHER] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 28, 0),
	235	[HWBLK_ATAPI] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 26, 0),
	236	[HWBLK_TPU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 25, 0),
	237	[HWBLK_IRDA] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR2, 24, 0),
	238	[HWBLK_TSIF] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 22, 0),
	239	[HWBLK_USB1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 21, 0),
	240	[HWBLK_USB0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 20, 0),
	241	[HWBLK_2DG] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 19, 0),
	242	[HWBLK_SDHI0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 18, 0),
	243	[HWBLK_SDHI1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 17, 0),
	244	[HWBLK_VEU1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 15, 0),
	245	[HWBLK_CEU1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 13, 0),
	246	[HWBLK_BEU1] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 12, 0),
	247	[HWBLK_2DDMAC] = SH_CLK_MSTP32(&div4_clks[DIV4_SH], MSTPCR2, 10, 0),
	248	[HWBLK_SPU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 9, 0),
	249	[HWBLK_JPU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 6, 0),
	250	[HWBLK_VOU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 5, 0),
	251	[HWBLK_BEU0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 4, 0),
	252	[HWBLK_CEU0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 3, 0),
	253	[HWBLK_VEU0] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 2, 0),
	254	[HWBLK_VPU] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 1, 0),
	255	[HWBLK_LCDC] = SH_CLK_MSTP32(&div4_clks[DIV4_B], MSTPCR2, 0, 0),
b621370a MD	256	};
b621370a MD	257
f4cff0d0	258	static struct clk_lookup lookups[] = {
b3f9f630 MD	259	/* main clocks */
	260	CLKDEV_CON_ID("rclk", &r_clk),
	261	CLKDEV_CON_ID("extal", &extal_clk),
	262	CLKDEV_CON_ID("fll_clk", &fll_clk),
	263	CLKDEV_CON_ID("pll_clk", &pll_clk),
	264	CLKDEV_CON_ID("div3_clk", &div3_clk),
	265
1c4cde2e MD	266	/* DIV4 clocks */
	267	CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
	268	CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_SH]),
	269	CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_B]),
	270	CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
	271	CLKDEV_CON_ID("vpu_clk", &div4_clks[DIV4_M1]),
	272
098ec49b MD	273	/* DIV6 clocks */
098ec49b MD	274	CLKDEV_CON_ID("video_clk", &div6_clks[DIV6_V]),
4bd5d259 KM	275	CLKDEV_CON_ID("fsia_clk", &div6_reparent_clks[DIV6_FA]),
4bd5d259 KM	276	CLKDEV_CON_ID("fsib_clk", &div6_reparent_clks[DIV6_FB]),
098ec49b MD	277	CLKDEV_CON_ID("irda_clk", &div6_clks[DIV6_I]),
	278	CLKDEV_CON_ID("spu_clk", &div6_clks[DIV6_S]),
	279
fd30401b MD	280	/* MSTP clocks */
	281	CLKDEV_CON_ID("tlb0", &mstp_clks[HWBLK_TLB]),
	282	CLKDEV_CON_ID("ic0", &mstp_clks[HWBLK_IC]),
	283	CLKDEV_CON_ID("oc0", &mstp_clks[HWBLK_OC]),
	284	CLKDEV_CON_ID("rs0", &mstp_clks[HWBLK_RSMEM]),
	285	CLKDEV_CON_ID("ilmem0", &mstp_clks[HWBLK_ILMEM]),
	286	CLKDEV_CON_ID("l2c0", &mstp_clks[HWBLK_L2C]),
	287	CLKDEV_CON_ID("fpu0", &mstp_clks[HWBLK_FPU]),
	288	CLKDEV_CON_ID("intc0", &mstp_clks[HWBLK_INTC]),
8cc88a55	289	CLKDEV_DEV_ID("sh-dma-engine.0", &mstp_clks[HWBLK_DMAC0]),
fd30401b MD	290	CLKDEV_CON_ID("sh0", &mstp_clks[HWBLK_SHYWAY]),
	291	CLKDEV_CON_ID("hudi0", &mstp_clks[HWBLK_HUDI]),
	292	CLKDEV_CON_ID("ubc0", &mstp_clks[HWBLK_UBC]),
23bcc04d KM	293
	294	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.0", &mstp_clks[HWBLK_TMU0]),
	295	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.1", &mstp_clks[HWBLK_TMU0]),
	296	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.2", &mstp_clks[HWBLK_TMU0]),
	297	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.3", &mstp_clks[HWBLK_TMU1]),
	298
fd30401b	299	CLKDEV_CON_ID("cmt_fck", &mstp_clks[HWBLK_CMT]),
8cc88a55 GL	300	CLKDEV_DEV_ID("sh-wdt.0", &mstp_clks[HWBLK_RWDT]),
8cc88a55 GL	301	CLKDEV_DEV_ID("sh-dma-engine.1", &mstp_clks[HWBLK_DMAC1]),
23bcc04d KM	302
	303	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.4", &mstp_clks[HWBLK_TMU1]),
	304	CLKDEV_ICK_ID("tmu_fck", "sh_tmu.5", &mstp_clks[HWBLK_TMU1]),
8cc88a55 GL	305	CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[HWBLK_SCIF0]),
	306	CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[HWBLK_SCIF1]),
	307	CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[HWBLK_SCIF2]),
	308	CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[HWBLK_SCIF3]),
	309	CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[HWBLK_SCIF4]),
	310	CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[HWBLK_SCIF5]),
	311
	312	CLKDEV_DEV_ID("spi_sh_msiof.0", &mstp_clks[HWBLK_MSIOF0]),
	313	CLKDEV_DEV_ID("spi_sh_msiof.1", &mstp_clks[HWBLK_MSIOF1]),
	314	CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[HWBLK_KEYSC]),
fd30401b	315	CLKDEV_CON_ID("rtc0", &mstp_clks[HWBLK_RTC]),
1ec353a0 KM	316	CLKDEV_DEV_ID("i2c-sh_mobile.0", &mstp_clks[HWBLK_IIC0]),
1ec353a0 KM	317	CLKDEV_DEV_ID("i2c-sh_mobile.1", &mstp_clks[HWBLK_IIC1]),
8cc88a55 GL	318	CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[HWBLK_MMC]),
8cc88a55 GL	319	CLKDEV_DEV_ID("sh-eth.0", &mstp_clks[HWBLK_ETHER]),
fd30401b MD	320	CLKDEV_CON_ID("atapi0", &mstp_clks[HWBLK_ATAPI]),
	321	CLKDEV_CON_ID("tpu0", &mstp_clks[HWBLK_TPU]),
	322	CLKDEV_CON_ID("irda0", &mstp_clks[HWBLK_IRDA]),
	323	CLKDEV_CON_ID("tsif0", &mstp_clks[HWBLK_TSIF]),
	324	CLKDEV_CON_ID("usb1", &mstp_clks[HWBLK_USB1]),
	325	CLKDEV_CON_ID("usb0", &mstp_clks[HWBLK_USB0]),
	326	CLKDEV_CON_ID("2dg0", &mstp_clks[HWBLK_2DG]),
8cc88a55 GL	327	CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[HWBLK_SDHI0]),
8cc88a55 GL	328	CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[HWBLK_SDHI1]),
fd30401b	329	CLKDEV_CON_ID("veu1", &mstp_clks[HWBLK_VEU1]),
8cc88a55	330	CLKDEV_DEV_ID("sh_mobile_ceu.1", &mstp_clks[HWBLK_CEU1]),
fd30401b MD	331	CLKDEV_CON_ID("beu1", &mstp_clks[HWBLK_BEU1]),
	332	CLKDEV_CON_ID("2ddmac0", &mstp_clks[HWBLK_2DDMAC]),
	333	CLKDEV_CON_ID("spu0", &mstp_clks[HWBLK_SPU]),
	334	CLKDEV_CON_ID("jpu0", &mstp_clks[HWBLK_JPU]),
8cc88a55	335	CLKDEV_DEV_ID("sh-vou.0", &mstp_clks[HWBLK_VOU]),
fd30401b	336	CLKDEV_CON_ID("beu0", &mstp_clks[HWBLK_BEU0]),
8cc88a55	337	CLKDEV_DEV_ID("sh_mobile_ceu.0", &mstp_clks[HWBLK_CEU0]),
fd30401b MD	338	CLKDEV_CON_ID("veu0", &mstp_clks[HWBLK_VEU0]),
fd30401b MD	339	CLKDEV_CON_ID("vpu0", &mstp_clks[HWBLK_VPU]),
8cc88a55	340	CLKDEV_DEV_ID("sh_mobile_lcdc_fb.0", &mstp_clks[HWBLK_LCDC]),
f4cff0d0 PM	341	};
f4cff0d0 PM	342
b621370a MD	343	int __init arch_clk_init(void)
	344	{
	345	int k, ret = 0;
	346
	347	/* autodetect extal or fll configuration */
	348	if (__raw_readl(PLLCR) & 0x1000)
	349	pll_clk.parent = &fll_clk;
	350	else
	351	pll_clk.parent = &extal_clk;
	352
	353	for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
	354	ret = clk_register(main_clks[k]);
	355
f4cff0d0 PM	356	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
f4cff0d0 PM	357
b621370a MD	358	if (!ret)
	359	ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
	360
	361	if (!ret)
098ec49b	362	ret = sh_clk_div6_register(div6_clks, DIV6_NR);
b621370a	363
4bd5d259 KM	364	if (!ret)
	365	ret = sh_clk_div6_reparent_register(div6_reparent_clks, DIV6_REPARENT_NR);
	366
b621370a	367	if (!ret)
8cc88a55	368	ret = sh_clk_mstp32_register(mstp_clks, HWBLK_NR);
b621370a MD	369
	370	return ret;
	371	}