57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2005 Stephen Street / StreetFire Sound Labs
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*/
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#ifndef __LINUX_SPI_PXA2XX_SPI_H
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#define __LINUX_SPI_PXA2XX_SPI_H
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#include <linux/dmaengine.h>
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#include <linux/types.h>
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#include <linux/pxa2xx_ssp.h>
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struct dma_chan;
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/*
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* The platform data for SSP controller devices
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* (resides in device.platform_data).
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*/
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struct pxa2xx_spi_controller {
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u16 num_chipselect;
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u8 enable_dma;
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u8 dma_burst_size;
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bool is_target;
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/* DMA engine specific config */
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dma_filter_fn dma_filter;
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void *tx_param;
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void *rx_param;
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/* For non-PXA arches */
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struct ssp_device ssp;
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};
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/*
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* The controller specific data for SPI target devices
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* (resides in spi_board_info.controller_data),
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* copied to spi_device.platform_data ... mostly for
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* DMA tuning.
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*/
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struct pxa2xx_spi_chip {
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u8 tx_threshold;
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u8 tx_hi_threshold;
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u8 rx_threshold;
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u8 dma_burst_size;
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u32 timeout;
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};
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#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
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#include <linux/clk.h>
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extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_controller *info);
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#endif
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#endif /* __LINUX_SPI_PXA2XX_SPI_H */
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