xref: /openbmc/linux/arch/arm/mach-omap2/cm2xxx_3xxx.h (revision e1d3cd94)

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * OMAP2/3 Clock Management (CM) register definitions
 *
 * Copyright (C) 2007-2009 Texas Instruments, Inc.
 * Copyright (C) 2007-2010 Nokia Corporation
 * Paul Walmsley
 *
 * The CM hardware modules on the OMAP2/3 are quite similar to each
 * other.  The CM modules/instances on OMAP4 are quite different, so
 * they are handled in a separate file.
 */
#ifndef __ARCH_ASM_MACH_OMAP2_CM2XXX_3XXX_H
#define __ARCH_ASM_MACH_OMAP2_CM2XXX_3XXX_H

#include "cm.h"

/*
 * Module specific CM register offsets from CM_BASE + domain offset
 * Use cm_{read,write}_mod_reg() with these registers.
 * These register offsets generally appear in more than one PRCM submodule.
 */

/* Common between OMAP2 and OMAP3 */

#define CM_FCLKEN					0x0000
#define CM_FCLKEN1					CM_FCLKEN
#define CM_CLKEN					CM_FCLKEN
#define CM_ICLKEN					0x0010
#define CM_ICLKEN1					CM_ICLKEN
#define CM_ICLKEN2					0x0014
#define CM_ICLKEN3					0x0018
#define CM_IDLEST					0x0020
#define CM_IDLEST1					CM_IDLEST
#define CM_IDLEST2					0x0024
#define OMAP2430_CM_IDLEST3				0x0028
#define CM_AUTOIDLE					0x0030
#define CM_AUTOIDLE1					CM_AUTOIDLE
#define CM_AUTOIDLE2					0x0034
#define CM_AUTOIDLE3					0x0038
#define CM_CLKSEL					0x0040
#define CM_CLKSEL1					CM_CLKSEL
#define CM_CLKSEL2					0x0044
#define OMAP2_CM_CLKSTCTRL				0x0048

#ifndef __ASSEMBLER__

#include <linux/io.h>

static inline u32 omap2_cm_read_mod_reg(s16 module, u16 idx)
{
	return readl_relaxed(cm_base.va + module + idx);
}

static inline void omap2_cm_write_mod_reg(u32 val, s16 module, u16 idx)
{
	writel_relaxed(val, cm_base.va + module + idx);
}

/* Read-modify-write a register in a CM module. Caller must lock */
static inline u32 omap2_cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module,
					    s16 idx)
{
	u32 v;

	v = omap2_cm_read_mod_reg(module, idx);
	v &= ~mask;
	v |= bits;
	omap2_cm_write_mod_reg(v, module, idx);

	return v;
}

/* Read a CM register, AND it, and shift the result down to bit 0 */
static inline u32 omap2_cm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask)
{
	u32 v;

	v = omap2_cm_read_mod_reg(domain, idx);
	v &= mask;
	v >>= __ffs(mask);

	return v;
}

static inline u32 omap2_cm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
	return omap2_cm_rmw_mod_reg_bits(bits, bits, module, idx);
}

static inline u32 omap2_cm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
	return omap2_cm_rmw_mod_reg_bits(bits, 0x0, module, idx);
}

#endif

/* CM register bits shared between 24XX and 3430 */

/* CM_CLKSEL_GFX */
#define OMAP_CLKSEL_GFX_SHIFT				0
#define OMAP_CLKSEL_GFX_MASK				(0x7 << 0)
#define OMAP_CLKSEL_GFX_WIDTH				3

/* CM_ICLKEN_GFX */
#define OMAP_EN_GFX_SHIFT				0
#define OMAP_EN_GFX_MASK				(1 << 0)

/* CM_IDLEST_GFX */
#define OMAP_ST_GFX_MASK				(1 << 0)

#endif