bc400e47fa
In current implementation, each driver call wait_for_completion_timeout and readl_poll_timeout with own timeout values. In case of slow environments like presil, lot of hacks are needed to change the timeouts for each driver. It needs multiple code changes and compilations, thus consuming time. This commit implements a common interface to call wait_for_completion_timeout and readl_poll_timeout. Debug variable is also introduced to change the timeout value. This will help to change the timeout without compilations and changes at multiple places. Change-Id: Iba51e0805a49ed325147a12688c2fe6619bb68e6 CRs-Fixed: 2830502 Signed-off-by: Gaurav Jindal <gjindal@codeaurora.org>
105 lines
3.9 KiB
C
105 lines
3.9 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 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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#endif /* _CAM_COMMON_UTIL_H_ */
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