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 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 17 */ 18 #ifndef __linux_pxa2xx_spi_h 19 #define __linux_pxa2xx_spi_h 20 21 #include <linux/pxa2xx_ssp.h> 22 23 #define PXA2XX_CS_ASSERT (0x01) 24 #define PXA2XX_CS_DEASSERT (0x02) 25 26 struct dma_chan; 27 28 /* device.platform_data for SSP controller devices */ 29 struct pxa2xx_spi_master { 30 u32 clock_enable; 31 u16 num_chipselect; 32 u8 enable_dma; 33 34 /* DMA engine specific config */ 35 bool (*dma_filter)(struct dma_chan *chan, void *param); 36 void *tx_param; 37 void *rx_param; 38 39 /* For non-PXA arches */ 40 struct ssp_device ssp; 41 }; 42 43 /* spi_board_info.controller_data for SPI slave devices, 44 * copied to spi_device.platform_data ... mostly for dma tuning 45 */ 46 struct pxa2xx_spi_chip { 47 u8 tx_threshold; 48 u8 tx_hi_threshold; 49 u8 rx_threshold; 50 u8 dma_burst_size; 51 u32 timeout; 52 u8 enable_loopback; 53 int gpio_cs; 54 void (*cs_control)(u32 command); 55 }; 56 57 #if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP) 58 59 #include <linux/clk.h> 60 #include <mach/dma.h> 61 62 extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info); 63 64 #endif 65 #endif 66