drivers/media/pci/intel/ipu-buttress.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2013 - 2020 Intel Corporation */
   3
   4 #ifndef IPU_BUTTRESS_H
   5 #define IPU_BUTTRESS_H
   6
   7 #include <linux/interrupt.h>
   8 #include <linux/spinlock.h>
   9 #include "ipu.h"
  10
  11 #define IPU_BUTTRESS_NUM_OF_SENS_CKS    3
  12 #define IPU_BUTTRESS_NUM_OF_PLL_CKS     3
  13 #define IPU_BUTTRESS_TSC_CLK            19200000
  14
  15 #define BUTTRESS_POWER_TIMEOUT                  200000
  16
  17 #define BUTTRESS_PS_FREQ_STEP           25U
  18 #define BUTTRESS_MIN_FORCE_PS_FREQ      (BUTTRESS_PS_FREQ_STEP * 8)
  19 #define BUTTRESS_MAX_FORCE_PS_FREQ      (BUTTRESS_PS_FREQ_STEP * 32)
  20
  21 #define BUTTRESS_IS_FREQ_STEP           25U
  22 #define BUTTRESS_MIN_FORCE_IS_FREQ      (BUTTRESS_IS_FREQ_STEP * 8)
  23 #define BUTTRESS_MAX_FORCE_IS_FREQ      (BUTTRESS_IS_FREQ_STEP * 16)
  24
  25 struct ipu_buttress_ctrl {
  26         u32 freq_ctl, pwr_sts_shift, pwr_sts_mask, pwr_sts_on, pwr_sts_off;
  27         union {
  28                 unsigned int divisor;
  29                 unsigned int ratio;
  30         };
  31         union {
  32                 unsigned int divisor_shift;
  33                 unsigned int ratio_shift;
  34         };
  35         unsigned int qos_floor;
  36         bool started;
  37 };
  38
  39 struct ipu_buttress_fused_freqs {
  40         unsigned int min_freq;
  41         unsigned int max_freq;
  42         unsigned int efficient_freq;
  43 };
  44
  45 struct ipu_buttress_ipc {
  46         struct completion send_complete;
  47         struct completion recv_complete;
  48         u32 nack;
  49         u32 nack_mask;
  50         u32 recv_data;
  51         u32 csr_out;
  52         u32 csr_in;
  53         u32 db0_in;
  54         u32 db0_out;
  55         u32 data0_out;
  56         u32 data0_in;
  57 };
  58
  59 struct ipu_buttress {
  60         struct mutex power_mutex, auth_mutex, cons_mutex, ipc_mutex;
  61         struct ipu_buttress_ipc cse;
  62         struct ipu_buttress_ipc ish;
  63         struct list_head constraints;
  64         struct ipu_buttress_fused_freqs psys_fused_freqs;
  65         unsigned int psys_min_freq;
  66         u32 wdt_cached_value;
  67         u8 psys_force_ratio;
  68         bool force_suspend;
  69         u32 ref_clk;
  70 };
  71
  72 struct ipu_buttress_sensor_clk_freq {
  73         unsigned int rate;
  74         unsigned int val;
  75 };
  76
  77 struct firmware;
  78
  79 enum ipu_buttress_ipc_domain {
  80         IPU_BUTTRESS_IPC_CSE,
  81         IPU_BUTTRESS_IPC_ISH,
  82 };
  83
  84 struct ipu_buttress_constraint {
  85         struct list_head list;
  86         unsigned int min_freq;
  87 };
  88
  89 struct ipu_ipc_buttress_bulk_msg {
  90         u32 cmd;
  91         u32 expected_resp;
  92         bool require_resp;
  93         u8 cmd_size;
  94 };
  95
  96 int ipu_buttress_ipc_reset(struct ipu_device *isp,
  97                            struct ipu_buttress_ipc *ipc);
  98 int ipu_buttress_map_fw_image(struct ipu_bus_device *sys,
  99                               const struct firmware *fw, struct sg_table *sgt);
 100 int ipu_buttress_unmap_fw_image(struct ipu_bus_device *sys,
 101                                 struct sg_table *sgt);
 102 int ipu_buttress_power(struct device *dev,
 103                        struct ipu_buttress_ctrl *ctrl, bool on);
 104 void
 105 ipu_buttress_add_psys_constraint(struct ipu_device *isp,
 106                                  struct ipu_buttress_constraint *constraint);
 107 void
 108 ipu_buttress_remove_psys_constraint(struct ipu_device *isp,
 109                                     struct ipu_buttress_constraint *constraint);
 110 void ipu_buttress_set_secure_mode(struct ipu_device *isp);
 111 bool ipu_buttress_get_secure_mode(struct ipu_device *isp);
 112 int ipu_buttress_authenticate(struct ipu_device *isp);
 113 int ipu_buttress_reset_authentication(struct ipu_device *isp);
 114 bool ipu_buttress_auth_done(struct ipu_device *isp);
 115 int ipu_buttress_start_tsc_sync(struct ipu_device *isp);
 116 int ipu_buttress_tsc_read(struct ipu_device *isp, u64 *val);
 117 u64 ipu_buttress_tsc_ticks_to_ns(u64 ticks, const struct ipu_device *isp);
 118
 119 irqreturn_t ipu_buttress_isr(int irq, void *isp_ptr);
 120 irqreturn_t ipu_buttress_isr_threaded(int irq, void *isp_ptr);
 121 int ipu_buttress_debugfs_init(struct ipu_device *isp);
 122 int ipu_buttress_init(struct ipu_device *isp);
 123 void ipu_buttress_exit(struct ipu_device *isp);
 124 void ipu_buttress_csi_port_config(struct ipu_device *isp,
 125                                   u32 legacy, u32 combo);
 126 int ipu_buttress_restore(struct ipu_device *isp);
 127
 128 int ipu_buttress_psys_freq_get(void *data, u64 *val);
 129 #endif /* IPU_BUTTRESS_H */