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Tip revision: d58071a8a76d779eedab38033ae4c821c30295a5 authored by Linus Torvalds on 28 November 2021, 22:09:19 UTC
Linux 5.16-rc3
Linux 5.16-rc3
Tip revision: d58071a
qcom-gpi-dma.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2020, Linaro Limited
*/
#ifndef QCOM_GPI_DMA_H
#define QCOM_GPI_DMA_H
/**
* enum spi_transfer_cmd - spi transfer commands
*/
enum spi_transfer_cmd {
SPI_TX = 1,
SPI_RX,
SPI_DUPLEX,
};
/**
* struct gpi_spi_config - spi config for peripheral
*
* @loopback_en: spi loopback enable when set
* @clock_pol_high: clock polarity
* @data_pol_high: data polarity
* @pack_en: process tx/rx buffers as packed
* @word_len: spi word length
* @clk_div: source clock divider
* @clk_src: serial clock
* @cmd: spi cmd
* @fragmentation: keep CS assserted at end of sequence
* @cs: chip select toggle
* @set_config: set peripheral config
* @rx_len: receive length for buffer
*/
struct gpi_spi_config {
u8 set_config;
u8 loopback_en;
u8 clock_pol_high;
u8 data_pol_high;
u8 pack_en;
u8 word_len;
u8 fragmentation;
u8 cs;
u32 clk_div;
u32 clk_src;
enum spi_transfer_cmd cmd;
u32 rx_len;
};
enum i2c_op {
I2C_WRITE = 1,
I2C_READ,
};
/**
* struct gpi_i2c_config - i2c config for peripheral
*
* @pack_enable: process tx/rx buffers as packed
* @cycle_count: clock cycles to be sent
* @high_count: high period of clock
* @low_count: low period of clock
* @clk_div: source clock divider
* @addr: i2c bus address
* @stretch: stretch the clock at eot
* @set_config: set peripheral config
* @rx_len: receive length for buffer
* @op: i2c cmd
* @muli-msg: is part of multi i2c r-w msgs
*/
struct gpi_i2c_config {
u8 set_config;
u8 pack_enable;
u8 cycle_count;
u8 high_count;
u8 low_count;
u8 addr;
u8 stretch;
u16 clk_div;
u32 rx_len;
enum i2c_op op;
bool multi_msg;
};
#endif /* QCOM_GPI_DMA_H */