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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2005 Stephen Street / StreetFire Sound Labs
*/
#ifndef __LINUX_SPI_PXA2XX_SPI_H
#define __LINUX_SPI_PXA2XX_SPI_H
#include <linux/types.h>
#include <linux/pxa2xx_ssp.h>
#define PXA2XX_CS_ASSERT (0x01)
#define PXA2XX_CS_DEASSERT (0x02)
struct dma_chan;
/*
* The platform data for SSP controller devices
* (resides in device.platform_data).
*/
struct pxa2xx_spi_controller {
u16 num_chipselect;
u8 enable_dma;
u8 dma_burst_size;
bool is_slave;
/* DMA engine specific config */
bool (*dma_filter)(struct dma_chan *chan, void *param);
void *tx_param;
void *rx_param;
/* For non-PXA arches */
struct ssp_device ssp;
};
/*
* The controller specific data for SPI slave devices
* (resides in spi_board_info.controller_data),
* copied to spi_device.platform_data ... mostly for
* DMA tuning.
*/
struct pxa2xx_spi_chip {
u8 tx_threshold;
u8 tx_hi_threshold;
u8 rx_threshold;
u8 dma_burst_size;
u32 timeout;
u8 enable_loopback;
int gpio_cs;
void (*cs_control)(u32 command);
};
#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
#include <linux/clk.h>
extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_controller *info);
#endif
#endif /* __LINUX_SPI_PXA2XX_SPI_H */