/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2013 - 2025 Intel Corporation
 */

#ifndef IPU7_BUTTRESS_H
#define IPU7_BUTTRESS_H

#include <linux/completion.h>
#include <linux/irqreturn.h>
#include <linux/list.h>
#include <linux/mutex.h>

struct device;
struct ipu7_device;

struct ipu_buttress_ctrl {
        u32 subsys_id;
        u32 freq_ctl, pwr_sts_shift, pwr_sts_mask, pwr_sts_on, pwr_sts_off;
        u32 ratio;
        u32 ratio_shift;
        u32 cdyn;
        u32 cdyn_shift;
        u32 ovrd_clk;
        u32 own_clk_ack;
};

struct ipu_buttress_ipc {
        struct completion send_complete;
        struct completion recv_complete;
        u32 nack;
        u32 nack_mask;
        u32 recv_data;
        u32 csr_out;
        u32 csr_in;
        u32 db0_in;
        u32 db0_out;
        u32 data0_out;
        u32 data0_in;
};

struct ipu_buttress {
        struct mutex power_mutex, auth_mutex, cons_mutex, ipc_mutex;
        struct ipu_buttress_ipc cse;
        u32 psys_min_freq;
        u32 wdt_cached_value;
        u8 psys_force_ratio;
        bool force_suspend;
        u32 ref_clk;
};

int ipu_buttress_ipc_reset(struct ipu7_device *isp,
                           struct ipu_buttress_ipc *ipc);
int ipu_buttress_powerup(struct device *dev,
                         const struct ipu_buttress_ctrl *ctrl);
int ipu_buttress_powerdown(struct device *dev,
                           const struct ipu_buttress_ctrl *ctrl);
bool ipu_buttress_get_secure_mode(struct ipu7_device *isp);
int ipu_buttress_authenticate(struct ipu7_device *isp);
int ipu_buttress_reset_authentication(struct ipu7_device *isp);
bool ipu_buttress_auth_done(struct ipu7_device *isp);
int ipu_buttress_get_isys_freq(struct ipu7_device *isp, u32 *freq);
int ipu_buttress_get_psys_freq(struct ipu7_device *isp, u32 *freq);
int ipu_buttress_start_tsc_sync(struct ipu7_device *isp);
void ipu_buttress_tsc_read(struct ipu7_device *isp, u64 *val);
u64 ipu_buttress_tsc_ticks_to_ns(u64 ticks, const struct ipu7_device *isp);

irqreturn_t ipu_buttress_isr(int irq, void *isp_ptr);
irqreturn_t ipu_buttress_isr_threaded(int irq, void *isp_ptr);
int ipu_buttress_init(struct ipu7_device *isp);
void ipu_buttress_exit(struct ipu7_device *isp);
void ipu_buttress_csi_port_config(struct ipu7_device *isp,
                                  u32 legacy, u32 combo);
void ipu_buttress_restore(struct ipu7_device *isp);
void ipu_buttress_wakeup_is_uc(const struct ipu7_device *isp);
void ipu_buttress_wakeup_ps_uc(const struct ipu7_device *isp);
#endif /* IPU7_BUTTRESS_H */