xref: /openbmc/linux/arch/arm/mach-omap2/prm2xxx_3xxx.h (revision 9a87ffc99ec8eb8d35eed7c4f816d75f5cc9662e)

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * OMAP2xxx/3xxx-common Power/Reset Management (PRM) register definitions
 *
 * Copyright (C) 2007-2009, 2011-2012 Texas Instruments, Inc.
 * Copyright (C) 2008-2010 Nokia Corporation
 * Paul Walmsley
 *
 * The PRM hardware modules on the OMAP2/3 are quite similar to each
 * other.  The PRM on OMAP4 has a new register layout, and is handled
 * in a separate file.
 */
#ifndef __ARCH_ARM_MACH_OMAP2_PRM2XXX_3XXX_H
#define __ARCH_ARM_MACH_OMAP2_PRM2XXX_3XXX_H

#include "prcm-common.h"
#include "prm.h"

/*
 * Module specific PRM register offsets from PRM_BASE + domain offset
 *
 * Use prm_{read,write}_mod_reg() with these registers.
 *
 * With a few exceptions, these are the register names beginning with
 * {PM,RM}_* on both OMAP2/3 SoC families..  (The exceptions are the
 * IRQSTATUS and IRQENABLE bits.)
 */

/* Register offsets appearing on both OMAP2 and OMAP3 */

#define OMAP2_RM_RSTCTRL				0x0050
#define OMAP2_RM_RSTTIME				0x0054
#define OMAP2_RM_RSTST					0x0058
#define OMAP2_PM_PWSTCTRL				0x00e0
#define OMAP2_PM_PWSTST					0x00e4

#define PM_WKEN						0x00a0
#define PM_WKEN1					PM_WKEN
#define PM_WKST						0x00b0
#define PM_WKST1					PM_WKST
#define PM_WKDEP					0x00c8
#define PM_EVGENCTRL					0x00d4
#define PM_EVGENONTIM					0x00d8
#define PM_EVGENOFFTIM					0x00dc


#ifndef __ASSEMBLER__

#include <linux/io.h>
#include "powerdomain.h"

/* Power/reset management domain register get/set */
static inline u32 omap2_prm_read_mod_reg(s16 module, u16 idx)
{
	return readl_relaxed(prm_base.va + module + idx);
}

static inline void omap2_prm_write_mod_reg(u32 val, s16 module, u16 idx)
{
	writel_relaxed(val, prm_base.va + module + idx);
}

/* Read-modify-write a register in a PRM module. Caller must lock */
static inline u32 omap2_prm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module,
					     s16 idx)
{
	u32 v;

	v = omap2_prm_read_mod_reg(module, idx);
	v &= ~mask;
	v |= bits;
	omap2_prm_write_mod_reg(v, module, idx);

	return v;
}

/* Read a PRM register, AND it, and shift the result down to bit 0 */
static inline u32 omap2_prm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask)
{
	u32 v;

	v = omap2_prm_read_mod_reg(domain, idx);
	v &= mask;
	v >>= __ffs(mask);

	return v;
}

static inline u32 omap2_prm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
	return omap2_prm_rmw_mod_reg_bits(bits, bits, module, idx);
}

static inline u32 omap2_prm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
	return omap2_prm_rmw_mod_reg_bits(bits, 0x0, module, idx);
}

/* These omap2_ PRM functions apply to both OMAP2 and 3 */
int omap2_prm_is_hardreset_asserted(u8 shift, u8 part, s16 prm_mod, u16 offset);
int omap2_prm_assert_hardreset(u8 shift, u8 part, s16 prm_mod,
			       u16 offset);
int omap2_prm_deassert_hardreset(u8 rst_shift, u8 st_shift, u8 part,
				 s16 prm_mod, u16 reset_offset,
				 u16 st_offset);

extern int omap2_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
				    u8 pwrst);
extern int omap2_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
				     u8 pwrst);
extern int omap2_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank);
extern int omap2_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank);
extern int omap2_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst);
extern int omap2_pwrdm_wait_transition(struct powerdomain *pwrdm);

extern int omap2_clkdm_add_wkdep(struct clockdomain *clkdm1,
				 struct clockdomain *clkdm2);
extern int omap2_clkdm_del_wkdep(struct clockdomain *clkdm1,
				 struct clockdomain *clkdm2);
extern int omap2_clkdm_read_wkdep(struct clockdomain *clkdm1,
				  struct clockdomain *clkdm2);
extern int omap2_clkdm_clear_all_wkdeps(struct clockdomain *clkdm);

#endif /* __ASSEMBLER */

/*
 * Bits common to specific registers
 *
 * The 3430 register and bit names are generally used,
 * since they tend to make more sense
 */

/* PM_EVGENONTIM_MPU */
/* Named PM_EVEGENONTIM_MPU on the 24XX */
#define OMAP_ONTIMEVAL_SHIFT				0
#define OMAP_ONTIMEVAL_MASK				(0xffffffff << 0)

/* PM_EVGENOFFTIM_MPU */
/* Named PM_EVEGENOFFTIM_MPU on the 24XX */
#define OMAP_OFFTIMEVAL_SHIFT				0
#define OMAP_OFFTIMEVAL_MASK				(0xffffffff << 0)

/* PRM_CLKSETUP and PRCM_VOLTSETUP */
/* Named PRCM_CLKSSETUP on the 24XX */
#define OMAP_SETUP_TIME_SHIFT				0
#define OMAP_SETUP_TIME_MASK				(0xffff << 0)

/* PRM_CLKSRC_CTRL */
/* Named PRCM_CLKSRC_CTRL on the 24XX */
#define OMAP_SYSCLKDIV_SHIFT				6
#define OMAP_SYSCLKDIV_MASK				(0x3 << 6)
#define OMAP_SYSCLKDIV_WIDTH				2
#define OMAP_AUTOEXTCLKMODE_SHIFT			3
#define OMAP_AUTOEXTCLKMODE_MASK			(0x3 << 3)
#define OMAP_SYSCLKSEL_SHIFT				0
#define OMAP_SYSCLKSEL_MASK				(0x3 << 0)

/* PM_EVGENCTRL_MPU */
#define OMAP_OFFLOADMODE_SHIFT				3
#define OMAP_OFFLOADMODE_MASK				(0x3 << 3)
#define OMAP_ONLOADMODE_SHIFT				1
#define OMAP_ONLOADMODE_MASK				(0x3 << 1)
#define OMAP_ENABLE_MASK				(1 << 0)

/* PRM_RSTTIME */
/* Named RM_RSTTIME_WKUP on the 24xx */
#define OMAP_RSTTIME2_SHIFT				8
#define OMAP_RSTTIME2_MASK				(0x1f << 8)
#define OMAP_RSTTIME1_SHIFT				0
#define OMAP_RSTTIME1_MASK				(0xff << 0)

/* PRM_RSTCTRL */
/* Named RM_RSTCTRL_WKUP on the 24xx */
/* 2420 calls RST_DPLL3 'RST_DPLL' */
#define OMAP_RST_DPLL3_MASK				(1 << 2)
#define OMAP_RST_GS_MASK				(1 << 1)


/*
 * Bits common to module-shared registers
 *
 * Not all registers of a particular type support all of these bits -
 * check TRM if you are unsure
 */

/*
 * 24XX: RM_RSTST_MPU and RM_RSTST_DSP - on 24XX, 'COREDOMAINWKUP_RST' is
 *	 called 'COREWKUP_RST'
 *
 * 3430: RM_RSTST_IVA2, RM_RSTST_MPU, RM_RSTST_GFX, RM_RSTST_DSS,
 *	 RM_RSTST_CAM, RM_RSTST_PER, RM_RSTST_NEON
 */
#define OMAP_COREDOMAINWKUP_RST_MASK			(1 << 3)

/*
 * 24XX: RM_RSTST_MPU, RM_RSTST_GFX, RM_RSTST_DSP
 *
 * 2430: RM_RSTST_MDM
 *
 * 3430: RM_RSTST_CORE, RM_RSTST_EMU
 */
#define OMAP_DOMAINWKUP_RST_MASK			(1 << 2)

/*
 * 24XX: RM_RSTST_MPU, RM_RSTST_WKUP, RM_RSTST_DSP
 *	 On 24XX, 'GLOBALWARM_RST' is called 'GLOBALWMPU_RST'.
 *
 * 2430: RM_RSTST_MDM
 *
 * 3430: RM_RSTST_CORE, RM_RSTST_EMU
 */
#define OMAP_GLOBALWARM_RST_SHIFT			1
#define OMAP_GLOBALWARM_RST_MASK			(1 << 1)
#define OMAP_GLOBALCOLD_RST_SHIFT			0
#define OMAP_GLOBALCOLD_RST_MASK			(1 << 0)

/*
 * 24XX: PM_WKDEP_GFX, PM_WKDEP_MPU, PM_WKDEP_CORE, PM_WKDEP_DSP
 *	 2420 TRM sometimes uses "EN_WAKEUP" instead of "EN_WKUP"
 *
 * 2430: PM_WKDEP_MDM
 *
 * 3430: PM_WKDEP_IVA2, PM_WKDEP_GFX, PM_WKDEP_DSS, PM_WKDEP_CAM,
 *	 PM_WKDEP_PER
 */
#define OMAP_EN_WKUP_SHIFT				4
#define OMAP_EN_WKUP_MASK				(1 << 4)

/*
 * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,
 *	 PM_PWSTCTRL_DSP
 *
 * 2430: PM_PWSTCTRL_MDM
 *
 * 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,
 *	 PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER,
 *	 PM_PWSTCTRL_NEON
 */
#define OMAP_LOGICRETSTATE_MASK				(1 << 2)


#endif