1 /* 2 * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 */ 14 #ifndef __linux_pxa2xx_spi_h 15 #define __linux_pxa2xx_spi_h 16 17 #include <linux/pxa2xx_ssp.h> 18 19 #define PXA2XX_CS_ASSERT (0x01) 20 #define PXA2XX_CS_DEASSERT (0x02) 21 22 struct dma_chan; 23 24 /* device.platform_data for SSP controller devices */ 25 struct pxa2xx_spi_master { 26 u16 num_chipselect; 27 u8 enable_dma; 28 29 /* DMA engine specific config */ 30 bool (*dma_filter)(struct dma_chan *chan, void *param); 31 void *tx_param; 32 void *rx_param; 33 34 /* For non-PXA arches */ 35 struct ssp_device ssp; 36 }; 37 38 /* spi_board_info.controller_data for SPI slave devices, 39 * copied to spi_device.platform_data ... mostly for dma tuning 40 */ 41 struct pxa2xx_spi_chip { 42 u8 tx_threshold; 43 u8 tx_hi_threshold; 44 u8 rx_threshold; 45 u8 dma_burst_size; 46 u32 timeout; 47 u8 enable_loopback; 48 int gpio_cs; 49 void (*cs_control)(u32 command); 50 }; 51 52 #if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP) 53 54 #include <linux/clk.h> 55 56 extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info); 57 58 #endif 59 #endif 60
