arch/arm/mach-pxa/include/mach/pxa2xx_spi.h

   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
  19 #ifndef PXA2XX_SPI_H_
  20 #define PXA2XX_SPI_H_
  21
  22 #define PXA2XX_CS_ASSERT (0x01)
  23 #define PXA2XX_CS_DEASSERT (0x02)
  24
  25 /* device.platform_data for SSP controller devices */
  26 struct pxa2xx_spi_master {
  27         u32 clock_enable;
  28         u16 num_chipselect;
  29         u8 enable_dma;
  30 };
  31
  32 /* spi_board_info.controller_data for SPI slave devices,
  33  * copied to spi_device.platform_data ... mostly for dma tuning
  34  */
  35 struct pxa2xx_spi_chip {
  36         u8 tx_threshold;
  37         u8 rx_threshold;
  38         u8 dma_burst_size;
  39         u32 timeout;
  40         u8 enable_loopback;
  41         void (*cs_control)(u32 command);
  42 };
  43
  44 extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info);
  45
  46 #endif /*PXA2XX_SPI_H_*/