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android/drivers/misc/mediatek/scp/mt6768/scp_helper.h
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threeeye bc1d038eac REVVL 6 Pro kernel bring-up: full working tree snapshot (2026-09-12) 
Squashed backup commit (no shallow-clone history issues) of
xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream
commit 9eece662e) plus all fixes applied to get everpal_defconfig building
clean against a modern (GCC 15.2.0) toolchain -- see the previous commit
message on the lineage-23.2 branch (also in this repo history is not
available here since this is a squashed snapshot; full incremental history
lives in the local DL380 checkout and the upstream GitHub remote).

Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
2026-09-12 13:36:46 +00:00

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/*
* Copyright (C) 2017 MediaTek Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 http://www.gnu.org/licenses/gpl-2.0.html for more details.
*/
#ifndef __SCP_HELPER_H__
#define __SCP_HELPER_H__
#include <linux/notifier.h>
#include <linux/interrupt.h>
#include "scp_reg.h"
#include "scp_feature_define.h"
/* scp config reg. definition*/
#define SCP_TCM_SIZE (scpreg.total_tcmsize)
#define SCP_A_TCM_SIZE (scpreg.scp_tcmsize)
#define SCP_TCM (scpreg.sram) /* virtual address */
#define SCP_REGION_INFO_OFFSET 0x400
#define SCP_RTOS_START 0x800
#define SCP_A_SHARE_BUFFER (scpreg.sram + \
SCP_RTOS_START - SHARE_BUF_SIZE * 2)
#define SCP_TCM_PHY_ADDR (0x10500000) /* AP view: physical address */
/* scp dvfs return status flag */
#define SET_PLL_FAIL (1)
#define SET_PMIC_VOLT_FAIL (2)
/* This structre need to sync with SCP-side */
struct SCP_IRQ_AST_INFO {
unsigned int scp_irq_ast_time;
unsigned int scp_irq_ast_pc_s;
unsigned int scp_irq_ast_pc_e;
unsigned int scp_irq_ast_lr_s;
unsigned int scp_irq_ast_lr_e;
unsigned int scp_irq_ast_irqd;
};
/* scp notify event */
enum SCP_NOTIFY_EVENT {
SCP_EVENT_READY = 0,
SCP_EVENT_STOP,
};
/* reset ID */
#define SCP_ALL_ENABLE 0x00
#define SCP_ALL_REBOOT 0x01
#define SCP_A_ENABLE 0x10
#define SCP_A_REBOOT 0x11
#define SCP_SEMA_AUDIOREG (-1)
/* scp semaphore definition*/
enum SEMAPHORE_FLAG {
SEMAPHORE_CLK_CFG_5 = 0,
SEMAPHORE_PTP,
SEMAPHORE_I2C0,
SEMAPHORE_I2C1,
SEMAPHORE_TOUCH,
SEMAPHORE_APDMA,
SEMAPHORE_SENSOR,
SEMAPHORE_SCP_A_AWAKE,
SEMAPHORE_SCP_B_AWAKE,
NR_FLAG = 9,
};
/* scp reset status */
enum SCP_RESET_STATUS {
RESET_STATUS_STOP = 0,
RESET_STATUS_START = 1,
};
/* scp reset status */
enum SCP_RESET_TYPE {
RESET_TYPE_WDT = 0,
RESET_TYPE_AWAKE = 1,
RESET_TYPE_CMD = 2,
};
struct scp_regs {
void __iomem *scpsys;
void __iomem *sram;
void __iomem *cfg;
void __iomem *clkctrl;
void __iomem *l1cctrl;
int irq;
unsigned int total_tcmsize;
unsigned int cfgregsize;
unsigned int scp_tcmsize;
};
/* scp work struct definition*/
struct scp_work_struct {
struct work_struct work;
unsigned int flags;
unsigned int id;
};
/* scp reserve memory ID definition*/
enum scp_reserve_mem_id_t {
#ifdef CONFIG_MTK_VOW_SUPPORT
VOW_MEM_ID,
#endif
SENS_MEM_ID,
#ifdef CONFIG_MTK_AUDIO_TUNNELING_SUPPORT
MP3_MEM_ID,
#endif
FLP_MEM_ID,
SCP_A_LOGGER_MEM_ID,
#if defined(CONFIG_SND_SOC_MTK_SCP_SMARTPA) || \
defined(CONFIG_MTK_AURISYS_PHONE_CALL_SUPPORT) || \
defined(CONFIG_MTK_AUDIO_TUNNELING_SUPPORT) || \
defined(CONFIG_MTK_VOW_SUPPORT)
AUDIO_IPI_MEM_ID,
#endif
#ifdef CONFIG_SND_SOC_MTK_SCP_SMARTPA
SPK_PROTECT_MEM_ID,
SPK_PROTECT_DUMP_MEM_ID,
#endif
VOW_BARGEIN_MEM_ID,
#ifdef SCP_PARAMS_TO_SCP_SUPPORT
SCP_DRV_PARAMS_MEM_ID,
#endif
NUMS_MEM_ID,
};
struct scp_reserve_mblock {
enum scp_reserve_mem_id_t num;
u64 start_phys;
u64 start_virt;
u64 size;
};
struct scp_region_info_st {
uint32_t ap_loader_start;
uint32_t ap_loader_size;
uint32_t ap_firmware_start;
uint32_t ap_firmware_size;
uint32_t ap_dram_start;
uint32_t ap_dram_size;
uint32_t ap_dram_backup_start;
/* This is the size of the structure.
* It can act as a version number if entries can only be
* added to (not deleted from) the structure.
* It should be the first entry of the structure, but for
* compatibility reason, it is appended here.
*/
uint32_t struct_size;
uint32_t scp_log_thru_ap_uart;
uint32_t TaskContext_ptr;
uint32_t Il1c_con;
uint32_t Dl1c_con;
uint32_t scpctl;
uint32_t ap_params_start;
};
/* scp device attribute */
extern struct device_attribute dev_attr_scp_A_mobile_log_UT;
extern struct device_attribute dev_attr_scp_A_logger_wakeup_AP;
extern const struct file_operations scp_A_log_file_ops;
extern struct scp_regs scpreg;
extern struct device_attribute dev_attr_scp_mobile_log;
extern struct device_attribute dev_attr_scp_A_get_last_log;
extern struct device_attribute dev_attr_scp_A_status;
extern struct bin_attribute bin_attr_scp_dump;
/* scp loggger */
int scp_logger_init(phys_addr_t start, phys_addr_t limit);
void scp_logger_uninit(void);
/* scp exception */
extern int scp_excep_init(void);
extern void scp_ram_dump_init(void);
extern void scp_excep_cleanup(void);
extern void scp_aee_last_reg(void);
/* scp irq */
extern irqreturn_t scp_A_irq_handler(int irq, void *dev_id);
extern void scp_A_irq_init(void);
extern void scp_A_ipi_init(void);
/* scp helper */
extern void scp_A_register_notify(struct notifier_block *nb);
extern void scp_A_unregister_notify(struct notifier_block *nb);
extern void scp_schedule_work(struct scp_work_struct *scp_ws);
extern void scp_schedule_logger_work(struct scp_work_struct *scp_ws);
extern int get_scp_semaphore(int flag);
extern int release_scp_semaphore(int flag);
extern int scp_get_semaphore_3way(int flag);
extern int scp_release_semaphore_3way(int flag);
extern void memcpy_to_scp(void __iomem *trg,
const void *src, int size);
extern void memcpy_from_scp(void *trg, const void __iomem *src,
int size);
extern int reset_scp(int reset);
extern phys_addr_t scp_get_reserve_mem_phys(enum scp_reserve_mem_id_t id);
extern phys_addr_t scp_get_reserve_mem_virt(enum scp_reserve_mem_id_t id);
extern phys_addr_t scp_get_reserve_mem_size(enum scp_reserve_mem_id_t id);
extern int scp_check_resource(void);
void set_scp_mpu(void);
extern phys_addr_t scp_mem_base_phys;
extern phys_addr_t scp_mem_base_virt;
extern phys_addr_t scp_mem_size;
extern atomic_t scp_reset_status;
/*extern scp notify*/
extern void scp_send_reset_wq(enum SCP_RESET_TYPE type);
extern void scp_extern_notify(enum SCP_NOTIFY_EVENT notify_status);
extern struct completion scp_sys_reset_cp;
extern void scp_status_set(unsigned int value);
extern void scp_logger_init_set(unsigned int value);
extern unsigned int scp_set_reset_status(void);
extern void scp_enable_sram(void);
extern int scp_sys_full_reset(void);
extern void scp_reset_awake_counts(void);
extern void scp_awake_init(void);
#if SCP_RECOVERY_SUPPORT
extern phys_addr_t scp_loader_base_virt;
extern unsigned int scp_reset_by_cmd;
extern struct scp_region_info_st scp_region_info_copy;
extern struct scp_region_info_st *scp_region_info;
extern void __iomem *scp_l1c_start_virt;
#endif
__attribute__((weak))
int sensor_params_to_scp(phys_addr_t addr_vir, size_t size);
#endif
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