/*
 * Copyright (C) 2019 Spreadtrum Communications Inc.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * 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.
 */

 /* mpms: modem powermanger source */
#ifndef _SPRD_PCIE_RESOURCE_H
#define _SPRD_PCIE_RESOURCE_H

#ifdef CONFIG_SPRD_PCIE_EP_DEVICE
#include <linux/platform_device.h>
#endif

#if 0
//#undef pr_debug
//#define pr_debug pr_emerg

#undef pr_info
#define pr_info pr_emerg

#undef pr_err
#define pr_err pr_emerg

#undef dev_dbg
#define dev_dbg dev_emerg

#undef dev_info
#define dev_info dev_emerg

#undef dev_err
#define dev_err dev_emerg
#endif

#if defined(CONFIG_SPRD_PCIE_EP_DEVICE) || defined(CONFIG_PCIE_EPF_SPRD)
/*
 * sprd_pcie_wait_resource
 * Returns:
 *  0 resource ready,
 *  < 0 resoure not ready,
 *  -%ERESTARTSYS if it was interrupted by a signal.
 */
int sprd_pcie_wait_resource(u32 dst, int timeout);

int sprd_pcie_request_resource(u32 dst);
int sprd_pcie_release_resource(u32 dst);
int sprd_pcie_resource_trash(u32 dst);
bool sprd_pcie_is_defective_chip(void);
#else
/* dummy functions */
static inline int sprd_pcie_wait_resource(u32 dst, int timeout) {return 0; }

static inline int sprd_pcie_request_resource(u32 dst) {return 0; }
static inline int sprd_pcie_release_resource(u32 dst) {return 0; }
static inline int sprd_pcie_resource_trash(u32 dst) {return 0; }
static inline bool sprd_pcie_is_defective_chip(void) {return false; }
#endif

#ifdef CONFIG_PCIE_EPF_SPRD
int sprd_pcie_resource_client_init(u32 dst, u32 ep_fun);
int sprd_register_pcie_resource_first_ready(u32 dst,
					    void (*notify)(void *p),
					    void *data);
#endif

#ifdef CONFIG_SPRD_PCIE_EP_DEVICE
int sprd_pcie_resource_host_init(u32 dst, u32 ep_dev,
				 struct platform_device *pcie_dev);

/*
 * sprd_pcie_resource_reboot_ep
 * reboot ep contains rescan ep device.
 */
void sprd_pcie_resource_reboot_ep(u32 dst);

/*
 * sprd_pcie_wait_load_resource
 * In case of the open the feature CONFIG_PCIE_SPRD_SPLIT_BAR,
 * It has 2 times pcie scan action in host side boot process.
 * After the first scan, the ep only have 2 bar can be used for
 * memory map, the pcie resource is not completely ready,
 * but the host can load images for ep, so we add the special api
 * sprd_pcie_wait_load_resource, this api will return after
 * the first scan action.
 * Returns:
 *  0 resource ready,
 *  < 0 resoure not ready,
 *  -%ERESTARTSYS if it was interrupted by a signal.
 */
int sprd_pcie_wait_load_resource(u32 dst);


/* Because the ep bar can only be split by ep itself,
 * After all modem images be loaded, notify pcie resource
 * can rescan ep now.
 */
void sprd_pcie_resource_notify_load_done(u32 dst);
#endif /* CONFIG_SPRD_PCIE_EP_DEVICE */

#endif /* _SPRD_PCIE_RESOURCE_H */