/*
 * FacetimeHD camera driver
 *
 * Copyright (C) 2014 Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
 *		 2016 Sven Schnelle <svens@stackframe.org>
 *
 * 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.
 *
 * 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.
 *
 */

#ifndef _FTHD_HW_H
#define _FTHD_HW_H

#include <linux/pci.h>

/* Used after most PCI Link IO writes */
static inline void fthd_hw_pci_post(struct fthd_private *dev_priv)
{
	pci_write_config_dword(dev_priv->pdev, 0, 0x12345678);
}

#define FTHD_S2_REG_READ(offset) _FTHD_S2_REG_READ(dev_priv, (offset))
#define FTHD_S2_REG_WRITE(val, offset) _FTHD_S2_REG_WRITE(dev_priv, (val), (offset))

#define FTHD_S2_MEM_READ(offset) _FTHD_S2_MEM_READ(dev_priv, (offset))
#define FTHD_S2_MEM_WRITE(val, offset) _FTHD_S2_MEM_WRITE(dev_priv, (val), (offset))
#define FTHD_S2_MEMCPY_TOIO(offset, buf, len) _FTHD_S2_MEMCPY_TOIO(dev_priv, (buf), (offset), (len))
#define FTHD_S2_MEMCPY_FROMIO(buf, offset, len) _FTHD_S2_MEMCPY_FROMIO(dev_priv, (buf), (offset), (len))

#define FTHD_ISP_REG_READ(offset) _FTHD_ISP_REG_READ(dev_priv, (offset))
#define FTHD_ISP_REG_WRITE(val, offset) _FTHD_ISP_REG_WRITE(dev_priv, (val), (offset))

static inline u32 _FTHD_S2_REG_READ(struct fthd_private *dev_priv, u32 offset)
{
	if (offset >= dev_priv->s2_io_len) {
		pr_err("S2 IO read out of range at %u\n", offset);
		return 0;
	}

	return ioread32(dev_priv->s2_io + offset);
}

static inline void _FTHD_S2_REG_WRITE(struct fthd_private *dev_priv, u32 val,
				      u32 offset)
{
	if (offset >= dev_priv->s2_io_len) {
		pr_err("S2 IO write out of range at %u\n", offset);
		return;
	}

	iowrite32(val, dev_priv->s2_io + offset);
	fthd_hw_pci_post(dev_priv);
}

static inline u32 _FTHD_S2_MEM_READ(struct fthd_private *dev_priv, u32 offset)
{
	if (offset >= dev_priv->s2_mem_len) {
		pr_err("S2 MEM read out of range at %u\n", offset);
		return 0;
	}

	return ioread32(dev_priv->s2_mem + offset);
}

static inline void _FTHD_S2_MEM_WRITE(struct fthd_private *dev_priv, u32 val,
				      u32 offset)
{
	if (offset >= dev_priv->s2_mem_len) {
		pr_err("S2 MEM write out of range at %u\n", offset);
		return;
	}

	iowrite32(val, dev_priv->s2_mem + offset);
}

static inline void _FTHD_S2_MEMCPY_TOIO(struct fthd_private *dev_priv, const void *buf,
					u32 offset, int len)
{
	memcpy_toio(dev_priv->s2_mem + offset, buf, len);
}


static inline void _FTHD_S2_MEMCPY_FROMIO(struct fthd_private *dev_priv, void *buf,
					  u32 offset, int len)
{
	memcpy_fromio(buf, dev_priv->s2_mem + offset, len);
}

static inline u32 _FTHD_ISP_REG_READ(struct fthd_private *dev_priv, u32 offset)
{
	if (offset >= dev_priv->isp_io_len) {
		pr_err("ISP IO read out of range at %u\n", offset);
		return 0;
	}

	return ioread32(dev_priv->isp_io + offset);
}

static inline void _FTHD_ISP_REG_WRITE(struct fthd_private *dev_priv, u32 val,
				       u32 offset)
{
	if (offset >= dev_priv->isp_io_len) {
		pr_err("ISP IO write out of range at %u\n", offset);
		return;
	}

	iowrite32(val, dev_priv->isp_io + offset);
	fthd_hw_pci_post(dev_priv);
}

extern int fthd_irq_enable(struct fthd_private *dev_priv);
extern int fthd_irq_disable(struct fthd_private *dev_priv);
extern int fthd_hw_init(struct fthd_private *dev_priv);
extern void fthd_hw_deinit(struct fthd_private *priv);
extern void fthd_ddr_phy_save_regs(struct fthd_private *dev_priv);
extern void fthd_ddr_phy_restore_regs(struct fthd_private *dev_priv);
#endif