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)
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/*
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* Copyright (C) 2016 MediaTek Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See http://www.gnu.org/licenses/gpl-2.0.html for more details.
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*/
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#ifndef __CCCI_RINGBUF_H__
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#define __CCCI_RINGBUF_H__
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enum ccci_ringbuf_error {
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CCCI_RINGBUF_OK = 0,
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CCCI_RINGBUF_PARAM_ERR,
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CCCI_RINGBUF_NOT_ENOUGH,
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CCCI_RINGBUF_BAD_HEADER,
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CCCI_RINGBUF_BAD_FOOTER,
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CCCI_RINGBUF_NOT_COMPLETE,
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CCCI_RINGBUF_EMPTY,
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};
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struct ccci_ringbuf {
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struct {
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unsigned int read;
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unsigned int write;
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unsigned int length;
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} rx_control, tx_control;
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unsigned char buffer[0];
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};
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#define CCCI_RINGBUF_CTL_LEN (8+sizeof(struct ccci_ringbuf)+8)
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int ccci_ringbuf_readable(int md_id, struct ccci_ringbuf *ringbuf);
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int ccci_ringbuf_writeable(int md_id, struct ccci_ringbuf *ringbuf,
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unsigned int write_size);
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struct ccci_ringbuf *ccci_create_ringbuf(int md_id, unsigned char *buf,
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int buf_size, int rx_size, int tx_size);
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int ccci_ringbuf_read(int md_id, struct ccci_ringbuf *ringbuf,
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unsigned char *buf, int read_size);
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int ccci_ringbuf_write(int md_id, struct ccci_ringbuf *ringbuf,
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unsigned char *data, int data_len);
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void ccci_ringbuf_move_rpointer(int md_id, struct ccci_ringbuf *ringbuf,
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int read_size);
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void ccci_ringbuf_reset(int md_id, struct ccci_ringbuf *ringbuf, int dir);
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#endif /* __CCCI_RINGBUF_H__ */
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