1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs 4 */ 5#ifndef __LINUX_SPI_PXA2XX_SPI_H 6#define __LINUX_SPI_PXA2XX_SPI_H 7 8#include <linux/dmaengine.h> 9#include <linux/types.h> 10 11#include <linux/pxa2xx_ssp.h> 12 13struct dma_chan; 14 15/* 16 * The platform data for SSP controller devices 17 * (resides in device.platform_data). 18 */ 19struct pxa2xx_spi_controller { 20 u16 num_chipselect; 21 u8 enable_dma; 22 u8 dma_burst_size; 23 bool is_target; 24 25 /* DMA engine specific config */ 26 dma_filter_fn dma_filter; 27 void *tx_param; 28 void *rx_param; 29 30 /* For non-PXA arches */ 31 struct ssp_device ssp; 32}; 33 34/* 35 * The controller specific data for SPI target devices 36 * (resides in spi_board_info.controller_data), 37 * copied to spi_device.platform_data ... mostly for 38 * DMA tuning. 39 */ 40struct pxa2xx_spi_chip { 41 u8 tx_threshold; 42 u8 tx_hi_threshold; 43 u8 rx_threshold; 44 u8 dma_burst_size; 45 u32 timeout; 46}; 47 48#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP) 49 50#include <linux/clk.h> 51 52extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_controller *info); 53 54#endif 55 56#endif /* __LINUX_SPI_PXA2XX_SPI_H */ 57