ipu7-buttress.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2013 - 2025 Intel Corporation
 4 */
 5
 6#ifndef IPU7_BUTTRESS_H
 7#define IPU7_BUTTRESS_H
 8
 9#include <linux/completion.h>
10#include <linux/irqreturn.h>
11#include <linux/list.h>
12#include <linux/mutex.h>
13
14struct device;
15struct ipu7_device;
16
17struct ipu_buttress_ctrl {
18	u32 subsys_id;
19	u32 freq_ctl, pwr_sts_shift, pwr_sts_mask, pwr_sts_on, pwr_sts_off;
20	u32 ratio;
21	u32 ratio_shift;
22	u32 cdyn;
23	u32 cdyn_shift;
24	u32 ovrd_clk;
25	u32 own_clk_ack;
26};
27
28struct ipu_buttress_ipc {
29	struct completion send_complete;
30	struct completion recv_complete;
31	u32 nack;
32	u32 nack_mask;
33	u32 recv_data;
34	u32 csr_out;
35	u32 csr_in;
36	u32 db0_in;
37	u32 db0_out;
38	u32 data0_out;
39	u32 data0_in;
40};
41
42struct ipu_buttress {
43	struct mutex power_mutex, auth_mutex, cons_mutex, ipc_mutex;
44	struct ipu_buttress_ipc cse;
45	u32 psys_min_freq;
46	u32 wdt_cached_value;
47	u8 psys_force_ratio;
48	bool force_suspend;
49	u32 ref_clk;
50};
51
52int ipu_buttress_ipc_reset(struct ipu7_device *isp,
53			   struct ipu_buttress_ipc *ipc);
54int ipu_buttress_powerup(struct device *dev,
55			 const struct ipu_buttress_ctrl *ctrl);
56int ipu_buttress_powerdown(struct device *dev,
57			   const struct ipu_buttress_ctrl *ctrl);
58bool ipu_buttress_get_secure_mode(struct ipu7_device *isp);
59int ipu_buttress_authenticate(struct ipu7_device *isp);
60int ipu_buttress_reset_authentication(struct ipu7_device *isp);
61bool ipu_buttress_auth_done(struct ipu7_device *isp);
62int ipu_buttress_get_isys_freq(struct ipu7_device *isp, u32 *freq);
63int ipu_buttress_get_psys_freq(struct ipu7_device *isp, u32 *freq);
64int ipu_buttress_start_tsc_sync(struct ipu7_device *isp);
65void ipu_buttress_tsc_read(struct ipu7_device *isp, u64 *val);
66u64 ipu_buttress_tsc_ticks_to_ns(u64 ticks, const struct ipu7_device *isp);
67
68irqreturn_t ipu_buttress_isr(int irq, void *isp_ptr);
69irqreturn_t ipu_buttress_isr_threaded(int irq, void *isp_ptr);
70int ipu_buttress_init(struct ipu7_device *isp);
71void ipu_buttress_exit(struct ipu7_device *isp);
72void ipu_buttress_csi_port_config(struct ipu7_device *isp,
73				  u32 legacy, u32 combo);
74void ipu_buttress_restore(struct ipu7_device *isp);
75void ipu_buttress_wakeup_is_uc(const struct ipu7_device *isp);
76void ipu_buttress_wakeup_ps_uc(const struct ipu7_device *isp);
77#endif /* IPU7_BUTTRESS_H */