^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2019-2020 Linaro Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #ifndef _GSI_TRANS_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #define _GSI_TRANS_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/refcount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/dma-direction.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "ipa_cmd.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct scatterlist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct sk_buff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct gsi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct gsi_trans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct gsi_trans_pool;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * struct gsi_trans - a GSI transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Most fields in this structure for internal use by the transaction core code:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * @links: Links for channel transaction lists by state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * @gsi: GSI pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * @channel_id: Channel number transaction is associated with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * @cancelled: If set by the core code, transaction was cancelled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * @tre_count: Number of TREs reserved for this transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * @used: Number of TREs *used* (could be less than tre_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * @len: Total # of transfer bytes represented in sgl[] (set by core)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * @data: Preserved but not touched by the core transaction code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * @sgl: An array of scatter/gather entries managed by core code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * @info: Array of command information structures (command channel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * @direction: DMA transfer direction (DMA_NONE for commands)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * @refcount: Reference count used for destruction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * @completion: Completed when the transaction completes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * @byte_count: TX channel byte count recorded when transaction committed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * @trans_count: Channel transaction count when committed (for BQL accounting)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * The size used for some fields in this structure were chosen to ensure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * the full structure size is no larger than 128 bytes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct gsi_trans {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct list_head links; /* gsi_channel lists */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct gsi *gsi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) u8 channel_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) bool cancelled; /* true if transaction was cancelled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) u8 tre_count; /* # TREs requested */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) u8 used; /* # entries used in sgl[] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) u32 len; /* total # bytes across sgl[] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) void *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct scatterlist *sgl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct ipa_cmd_info *info; /* array of entries, or null */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) enum dma_data_direction direction;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) refcount_t refcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct completion completion;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u64 byte_count; /* channel byte_count when committed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) u64 trans_count; /* channel trans_count when committed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * gsi_trans_pool_init() - Initialize a pool of structures for transactions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * @gsi: GSI pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * @size: Size of elements in the pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * @count: Minimum number of elements in the pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * @max_alloc: Maximum number of elements allocated at a time from pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * Return: 0 if successful, or a negative error code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) int gsi_trans_pool_init(struct gsi_trans_pool *pool, size_t size, u32 count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) u32 max_alloc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * gsi_trans_pool_alloc() - Allocate one or more elements from a pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * @pool: Pool pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * @count: Number of elements to allocate from the pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * Return: Virtual address of element(s) allocated from the pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) void *gsi_trans_pool_alloc(struct gsi_trans_pool *pool, u32 count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * gsi_trans_pool_exit() - Inverse of gsi_trans_pool_init()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * @pool: Pool pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) void gsi_trans_pool_exit(struct gsi_trans_pool *pool);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * gsi_trans_pool_init_dma() - Initialize a pool of DMA-able structures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * @dev: Device used for DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * @pool: Pool pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * @size: Size of elements in the pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * @count: Minimum number of elements in the pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * @max_alloc: Maximum number of elements allocated at a time from pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * Return: 0 if successful, or a negative error code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * Structures in this pool reside in DMA-coherent memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int gsi_trans_pool_init_dma(struct device *dev, struct gsi_trans_pool *pool,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) size_t size, u32 count, u32 max_alloc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * gsi_trans_pool_alloc_dma() - Allocate an element from a DMA pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * @pool: DMA pool pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * @addr: DMA address "handle" associated with the allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * Return: Virtual address of element allocated from the pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * Only one element at a time may be allocated from a DMA pool.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) void *gsi_trans_pool_alloc_dma(struct gsi_trans_pool *pool, dma_addr_t *addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * gsi_trans_pool_exit() - Inverse of gsi_trans_pool_init()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * @pool: Pool pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) void gsi_trans_pool_exit_dma(struct device *dev, struct gsi_trans_pool *pool);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * gsi_channel_trans_alloc() - Allocate a GSI transaction on a channel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * @gsi: GSI pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * @channel_id: Channel the transaction is associated with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * @tre_count: Number of elements in the transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * @direction: DMA direction for entire SGL (or DMA_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * Return: A GSI transaction structure, or a null pointer if all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * available transactions are in use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct gsi_trans *gsi_channel_trans_alloc(struct gsi *gsi, u32 channel_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) u32 tre_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) enum dma_data_direction direction);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * gsi_trans_free() - Free a previously-allocated GSI transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * @trans: Transaction to be freed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) void gsi_trans_free(struct gsi_trans *trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * gsi_trans_cmd_add() - Add an immediate command to a transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * @trans: Transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * @buf: Buffer pointer for command payload
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * @size: Number of bytes in buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * @addr: DMA address for payload
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * @direction: Direction of DMA transfer (or DMA_NONE if none required)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * @opcode: IPA immediate command opcode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) void gsi_trans_cmd_add(struct gsi_trans *trans, void *buf, u32 size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) dma_addr_t addr, enum dma_data_direction direction,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) enum ipa_cmd_opcode opcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * gsi_trans_page_add() - Add a page transfer to a transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * @trans: Transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * @page: Page pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * @size: Number of bytes (starting at offset) to transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * @offset: Offset within page for start of transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) int gsi_trans_page_add(struct gsi_trans *trans, struct page *page, u32 size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) u32 offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * gsi_trans_skb_add() - Add a socket transfer to a transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * @trans: Transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * @skb: Socket buffer for transfer (outbound)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * Return: 0, or -EMSGSIZE if socket data won't fit in transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) int gsi_trans_skb_add(struct gsi_trans *trans, struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * gsi_trans_commit() - Commit a GSI transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * @trans: Transaction to commit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * @ring_db: Whether to tell the hardware about these queued transfers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) void gsi_trans_commit(struct gsi_trans *trans, bool ring_db);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * gsi_trans_commit_wait() - Commit a GSI transaction and wait for it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * to complete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * @trans: Transaction to commit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) void gsi_trans_commit_wait(struct gsi_trans *trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * gsi_trans_commit_wait_timeout() - Commit a GSI transaction and wait for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * it to complete, with timeout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * @trans: Transaction to commit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * @timeout: Timeout period (in milliseconds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) int gsi_trans_commit_wait_timeout(struct gsi_trans *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) unsigned long timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * gsi_trans_read_byte() - Issue a single byte read TRE on a channel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * @gsi: GSI pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * @channel_id: Channel on which to read a byte
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * @addr: DMA address into which to transfer the one byte
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) * This is not a transaction operation at all. It's defined here because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * it needs to be done in coordination with other transaction activity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) int gsi_trans_read_byte(struct gsi *gsi, u32 channel_id, dma_addr_t addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) * gsi_trans_read_byte_done() - Clean up after a single byte read TRE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) * @gsi: GSI pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * @channel_id: Channel on which byte was read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * This function needs to be called to signal that the work related
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * to reading a byte initiated by gsi_trans_read_byte() is complete.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) void gsi_trans_read_byte_done(struct gsi *gsi, u32 channel_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) #endif /* _GSI_TRANS_H_ */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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