threeeye
bc1d038eac
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)
169 lines
5.0 KiB
C
169 lines
5.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2014-2020, Elliptic Laboratories AS. All rights reserved.
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* Elliptic Labs Linux driver
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*/
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#pragma once
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#include <linux/types.h>
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#include <linux/kfifo.h>
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#include <linux/spinlock.h>
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#include <linux/wait.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/workqueue.h>
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#define ELLIPTIC_DATA_IO_AP_TO_DSP 0
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#define ELLIPTIC_DATA_IO_DSP_TO_AP 1
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#define ELLIPTIC_DATA_IO_READ_OK 0
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#define ELLIPTIC_DATA_IO_READ_BUSY 1
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#define ELLIPTIC_DATA_IO_READ_CANCEL 2
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#define ELLIPTIC_MSG_BUF_SIZE 512
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/* wake source timeout in ms*/
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#define ELLIPTIC_WAKEUP_TIMEOUT 250
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#define ELLIPTIC_DATA_FIFO_SIZE (PAGE_SIZE)
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#define ULTRASOUND_RX_PORT_ID 0
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#define ULTRASOUND_TX_PORT_ID 1
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/* Elliptic Labs UltraSound Module */
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#define ELLIPTIC_ULTRASOUND_DISABLE 0
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#define ELLIPTIC_ULTRASOUND_ENABLE 1
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#define ELLIPTIC_ULTRASOUND_SET_PARAMS 2
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#define ELLIPTIC_ULTRASOUND_GET_PARAMS 3
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#define ELLIPTIC_ULTRASOUND_SYSTEM_CONFIG 4
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#define ELLIPTIC_ULTRASOUND_RAMP_DOWN 5
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#define ELLIPTIC_ULTRASOUND_OPERATION_MODE 6
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#define ELLIPTIC_INIT_DEBUG_SEGMENT 7
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/** Param ID definition */
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#define ELLIPTIC_ULTRASOUND_PARAM_ID_ENGINE_DATA 3
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#define ELLIPTIC_ULTRASOUND_PARAM_ID_CALIBRATION_DATA 11
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#define ELLIPTIC_ULTRASOUND_PARAM_ID_ENGINE_VERSION 12
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#define ELLIPTIC_ULTRASOUND_PARAM_ID_BUILD_BRANCH 14
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#define ELLIPTIC_ULTRASOUND_PARAM_ID_CALIBRATION_V2_DATA 15
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#define ELLIPTIC_ULTRASOUND_PARAM_ID_SENSORHUB 16
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#define ELLIPTIC_ULTRASOUND_PARAM_ID_DIAGNOSTICS_DATA 17
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#define ELLIPTIC_ULTRASOUND_PARAM_ID_TAG 18
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#define ELLIPTIC_ULTRASOUND_PARAM_ID_ML_DATA 19
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#define ELLIPTIC_DATA_READ_BUSY 0
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#define ELLIPTIC_DATA_READ_OK 1
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#define ELLIPTIC_DATA_READ_CANCEL 2
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#define ELLIPTIC_ALL_DEVICES -1
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#define ELLIPTIC_DEVICE_0 0
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#define ELLIPTIC_DEVICE_1 1
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/** 512 byte APR payload */
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#define ELLIPTIC_GET_PARAMS_SIZE 128
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/** System config size is 96 bytes */
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/* #define ELLIPTIC_SET_PARAMS_SIZE 128 */
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#define ELLIPTIC_SET_PARAMS_SIZE 114
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#define ELLIPTIC_IPI_MSG_HDR_SIZE 8
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enum elliptic_message_id {
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ELLIPTIC_MESSAGE_PAYLOAD, /* Input to AP*/
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ELLIPTIC_MESSAGE_RAW, /* Output from AP*/
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ELLIPTIC_MESSAGE_CALIBRATION,
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ELLIPTIC_MESSAGE_CALIBRATION_V2,
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ELLIPTIC_MESSAGE_DIAGNOSTICS,
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ELLIPTIC_MAX_MESSAGE_IDS
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};
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enum elliptic_data_push {
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ELLIPTIC_DATA_PUSH_FROM_KERNEL,
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ELLIPTIC_DATA_PUSH_FROM_USERSPACE
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};
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struct elliptic_data {
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/* wake lock timeout */
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unsigned int wakeup_timeout;
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/* members for top half interrupt handling */
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struct kfifo fifo_isr;
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spinlock_t fifo_isr_spinlock;
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wait_queue_head_t fifo_isr_not_empty;
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struct mutex user_buffer_lock;
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/* buffer to swap data from isr fifo to userspace */
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uint8_t isr_swap_buffer[ELLIPTIC_MSG_BUF_SIZE];
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atomic_t abort_io;
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/* debug counters, reset between open/close */
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uint32_t isr_fifo_discard;
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/* debug counters, persistent */
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uint32_t isr_fifo_discard_total;
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uint32_t userspace_read_total;
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uint32_t isr_write_total;
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};
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/* Elliptic IO module API (implemented by IO module)*/
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int elliptic_data_io_initialize(void);
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int elliptic_data_io_cleanup(void);
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int32_t elliptic_data_io_write(uint32_t message_id, const char *data,
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size_t data_size);
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int32_t elliptic_data_io_transact(uint32_t message_id, const char *data,
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size_t data_size, char *output_data,
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size_t output_data_size);
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/* Elliptic driver API (implemented by main driver)*/
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int elliptic_data_initialize(struct elliptic_data *elliptic_data,
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size_t max_queue_size, unsigned int wakeup_timeout,
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int id);
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int elliptic_data_cleanup(struct elliptic_data *elliptic_data);
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void elliptic_data_reset_debug_counters(struct elliptic_data *elliptic_data);
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void elliptic_data_update_debug_counters(struct elliptic_data *elliptic_data);
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void elliptic_data_print_debug_counters(struct elliptic_data *elliptic_data);
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/* Called from elliptic device read */
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size_t elliptic_data_pop(struct elliptic_data *elliptic_data,
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char __user *buffer, size_t buffer_size);
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/* Used for cancelling a blocking read */
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void elliptic_data_cancel(struct elliptic_data *elliptic_data);
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/* Called from IO module*/
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int elliptic_data_push(int deviceid, const char *buffer, size_t buffer_size,
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enum elliptic_data_push data_source);
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/* Writes to io module and user space control */
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int32_t elliptic_data_write(uint32_t message_id, const char *data,
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size_t data_size);
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/* Opens port */
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int elliptic_open_port(int portid);
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/* Closes port */
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int elliptic_close_port(int portid);
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/* Opens port */
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int elliptic_io_open_port(int portid);
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/* Closes port */
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int elliptic_io_close_port(int portid);
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/* Create device node for userspace io driver*/
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int elliptic_userspace_io_driver_init(void);
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void elliptic_userspace_io_driver_exit(void);
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/* Create device node for userspace io driver*/
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int elliptic_userspace_ctrl_driver_init(void);
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void elliptic_userspace_ctrl_driver_exit(void);
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int32_t elliptic_userspace_ctrl_write(uint32_t message_id, const char *data,
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size_t data_size);
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int32_t elliptic_debug_io_open(void);
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int32_t elliptic_debug_io_close(void);
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