/*
 * OMAP4 PRM module functions
 *
 * Copyright (C) 2011-2012 Texas Instruments, Inc.
 * Copyright (C) 2010 Nokia Corporation
 * Benoît Cousson
 * Paul Walmsley
 * Rajendra Nayak <rnayak@ti.com>
 *
 * 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/kernel.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/io.h>


#include "soc.h"
#include "iomap.h"
#include "common.h"
#include "vp.h"
#include "prm44xx.h"
#include "prm-regbits-44xx.h"
#include "prcm44xx.h"
#include "prminst44xx.h"
#include "powerdomain.h"

/* Static data */

static const struct omap_prcm_irq omap4_prcm_irqs[] = {
	OMAP_PRCM_IRQ("wkup",   0,      0),
	OMAP_PRCM_IRQ("io",     9,      1),
};

static struct omap_prcm_irq_setup omap4_prcm_irq_setup = {
	.ack			= OMAP4_PRM_IRQSTATUS_MPU_OFFSET,
	.mask			= OMAP4_PRM_IRQENABLE_MPU_OFFSET,
	.nr_regs		= 2,
	.irqs			= omap4_prcm_irqs,
	.nr_irqs		= ARRAY_SIZE(omap4_prcm_irqs),
	.irq			= 11 + OMAP44XX_IRQ_GIC_START,
	.read_pending_irqs	= &omap44xx_prm_read_pending_irqs,
	.ocp_barrier		= &omap44xx_prm_ocp_barrier,
	.save_and_clear_irqen	= &omap44xx_prm_save_and_clear_irqen,
	.restore_irqen		= &omap44xx_prm_restore_irqen,
};

/*
 * omap44xx_prm_reset_src_map - map from bits in the PRM_RSTST
 *   hardware register (which are specific to OMAP44xx SoCs) to reset
 *   source ID bit shifts (which is an OMAP SoC-independent
 *   enumeration)
 */
static struct prm_reset_src_map omap44xx_prm_reset_src_map[] = {
	{ OMAP4430_GLOBAL_WARM_SW_RST_SHIFT,
	  OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT },
	{ OMAP4430_GLOBAL_COLD_RST_SHIFT,
	  OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT },
	{ OMAP4430_MPU_SECURITY_VIOL_RST_SHIFT,
	  OMAP_SECU_VIOL_RST_SRC_ID_SHIFT },
	{ OMAP4430_MPU_WDT_RST_SHIFT, OMAP_MPU_WD_RST_SRC_ID_SHIFT },
	{ OMAP4430_SECURE_WDT_RST_SHIFT, OMAP_SECU_WD_RST_SRC_ID_SHIFT },
	{ OMAP4430_EXTERNAL_WARM_RST_SHIFT, OMAP_EXTWARM_RST_SRC_ID_SHIFT },
	{ OMAP4430_VDD_MPU_VOLT_MGR_RST_SHIFT,
	  OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT },
	{ OMAP4430_VDD_IVA_VOLT_MGR_RST_SHIFT,
	  OMAP_VDD_IVA_VM_RST_SRC_ID_SHIFT },
	{ OMAP4430_VDD_CORE_VOLT_MGR_RST_SHIFT,
	  OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT },
	{ OMAP4430_ICEPICK_RST_SHIFT, OMAP_ICEPICK_RST_SRC_ID_SHIFT },
	{ OMAP4430_C2C_RST_SHIFT, OMAP_C2C_RST_SRC_ID_SHIFT },
	{ -1, -1 },
};

/* PRM low-level functions */

/* Read a register in a CM/PRM instance in the PRM module */
u32 omap4_prm_read_inst_reg(s16 inst, u16 reg)
{
	return __raw_readl(OMAP44XX_PRM_REGADDR(inst, reg));
}

/* Write into a register in a CM/PRM instance in the PRM module */
void omap4_prm_write_inst_reg(u32 val, s16 inst, u16 reg)
{
	__raw_writel(val, OMAP44XX_PRM_REGADDR(inst, reg));
}

/* Read-modify-write a register in a PRM module. Caller must lock */
u32 omap4_prm_rmw_inst_reg_bits(u32 mask, u32 bits, s16 inst, s16 reg)
{
	u32 v;

	v = omap4_prm_read_inst_reg(inst, reg);
	v &= ~mask;
	v |= bits;
	omap4_prm_write_inst_reg(v, inst, reg);