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 14 struct device; 15 struct ipu7_device; 16 17 struct 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 28 struct 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 42 struct 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 52 int ipu_buttress_ipc_reset(struct ipu7_device *isp, 53 struct ipu_buttress_ipc *ipc); 54 int ipu_buttress_powerup(struct device *dev, 55 const struct ipu_buttress_ctrl *ctrl); 56 int ipu_buttress_powerdown(struct device *dev, 57 const struct ipu_buttress_ctrl *ctrl); 58 bool ipu_buttress_get_secure_mode(struct ipu7_device *isp); 59 int ipu_buttress_authenticate(struct ipu7_device *isp); 60 int ipu_buttress_reset_authentication(struct ipu7_device *isp); 61 bool ipu_buttress_auth_done(struct ipu7_device *isp); 62 int ipu_buttress_get_isys_freq(struct ipu7_device *isp, u32 *freq); 63 int ipu_buttress_get_psys_freq(struct ipu7_device *isp, u32 *freq); 64 int ipu_buttress_start_tsc_sync(struct ipu7_device *isp); 65 void ipu_buttress_tsc_read(struct ipu7_device *isp, u64 *val); 66 u64 ipu_buttress_tsc_ticks_to_ns(u64 ticks, const struct ipu7_device *isp); 67 68 irqreturn_t ipu_buttress_isr(int irq, void *isp_ptr); 69 irqreturn_t ipu_buttress_isr_threaded(int irq, void *isp_ptr); 70 int ipu_buttress_init(struct ipu7_device *isp); 71 void ipu_buttress_exit(struct ipu7_device *isp); 72 void ipu_buttress_csi_port_config(struct ipu7_device *isp, 73 u32 legacy, u32 combo); 74 void ipu_buttress_restore(struct ipu7_device *isp); 75 void ipu_buttress_wakeup_is_uc(const struct ipu7_device *isp); 76 void ipu_buttress_wakeup_ps_uc(const struct ipu7_device *isp); 77 #endif /* IPU7_BUTTRESS_H */ 78