c31cb00512
Add common function to modify system timer, with timeout multiplier as a debug capability. CRs-Fixed: 2932495 Change-Id: I73282aa30b938b7efce97a2e8fd757b04096ccad Signed-off-by: Mukund Madhusudan Atre <matre@codeaurora.org>
120 lines
4.3 KiB
C
120 lines
4.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
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*/
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#ifndef _CAM_COMMON_UTIL_H_
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#define _CAM_COMMON_UTIL_H_
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#include <linux/types.h>
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#include <linux/kernel.h>
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#define CAM_BITS_MASK_SHIFT(x, mask, shift) (((x) & (mask)) >> shift)
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#define CAM_36BIT_INTF_GET_IOVA_BASE(iova) ((iova) >> 8)
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#define CAM_36BIT_INTF_GET_IOVA_OFFSET(iova) ((iova) & 0xff)
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#define PTR_TO_U64(ptr) ((uint64_t)(uintptr_t)ptr)
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#define U64_TO_PTR(ptr) ((void *)(uintptr_t)ptr)
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#define CAM_GET_TIMESTAMP(timestamp) ktime_get_real_ts64(&(timestamp))
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#define CAM_GET_TIMESTAMP_DIFF_IN_MICRO(ts_start, ts_end, diff_microsec) \
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({ \
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diff_microsec = 0; \
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if (ts_end.tv_nsec >= ts_start.tv_nsec) { \
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diff_microsec = \
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(ts_end.tv_nsec - ts_start.tv_nsec) / 1000; \
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diff_microsec += \
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(ts_end.tv_sec - ts_start.tv_sec) * 1000 * 1000; \
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} else { \
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diff_microsec = \
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(ts_end.tv_nsec + \
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(1000*1000*1000 - ts_start.tv_nsec)) / 1000; \
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diff_microsec += \
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(ts_end.tv_sec - ts_start.tv_sec - 1) * 1000 * 1000; \
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} \
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})
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/**
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* cam_common_util_get_string_index()
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*
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* @brief Match the string from list of strings to return
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* matching index
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*
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* @strings: Pointer to list of strings
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* @num_strings: Number of strings in 'strings'
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* @matching_string: String to match
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* @index: Pointer to index to return matching index
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*
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* @return: 0 for success
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* -EINVAL for Fail
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*/
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int cam_common_util_get_string_index(const char **strings,
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uint32_t num_strings, const char *matching_string, uint32_t *index);
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/**
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* cam_common_util_remove_duplicate_arr()
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*
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* @brief Move all the unique integers to the start of
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* the array and return the number of unique integers
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*
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* @array: Pointer to the first integer of array
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* @num: Number of elements in array
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*
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* @return: Number of unique integers in array
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*/
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uint32_t cam_common_util_remove_duplicate_arr(int32_t *array,
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uint32_t num);
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/**
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* cam_common_wait_for_completion_timeout()
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*
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* @brief common interface to implement wait for completion
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* for slow environment like presil, single debug
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* timeout variable can take care
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*
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* @complete: Pointer to the first integer of array
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* @timeout_jiffies: Timeout value in jiffie
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*
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* @return: Remaining jiffies, non-zero for success, zero
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* in case of failure
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*/
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unsigned long cam_common_wait_for_completion_timeout(
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struct completion *complete,
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unsigned long timeout_jiffies);
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/**
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* cam_common_read_poll_timeout()
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*
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* @brief common interface to read poll timeout
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*
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* @addr: Address of IO register
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* @delay: Delay interval of poll
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* @timeout: Timeout for poll
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* @mask: Mask to be checked
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* @check_val: Value to be compared to break poll
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* @status: Status of register of IO
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*
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* @return: 0 if success and negative if fail
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* */
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int cam_common_read_poll_timeout(
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void __iomem *addr,
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unsigned long delay,
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unsigned long timeout,
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uint32_t mask,
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uint32_t check_val,
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uint32_t *status);
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/**
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* cam_common_modify_timer()
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*
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* @brief common interface to modify timer,
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*
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* @timer: reference to system timer
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* @timeout_val: timeout value for timer
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*
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* @return: 0 if success and negative if fail
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*/
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int cam_common_modify_timer(struct timer_list *timer, int32_t timeout_val);
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#endif /* _CAM_COMMON_UTIL_H_ */
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