diff options
Diffstat (limited to 'kernel/include/linux/spi/pxa2xx_spi.h')
| -rw-r--r-- | kernel/include/linux/spi/pxa2xx_spi.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/kernel/include/linux/spi/pxa2xx_spi.h b/kernel/include/linux/spi/pxa2xx_spi.h new file mode 100644 index 000000000..6d36dacec --- /dev/null +++ b/kernel/include/linux/spi/pxa2xx_spi.h @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef __linux_pxa2xx_spi_h +#define __linux_pxa2xx_spi_h + +#include <linux/pxa2xx_ssp.h> + +#define PXA2XX_CS_ASSERT (0x01) +#define PXA2XX_CS_DEASSERT (0x02) + +struct dma_chan; + +/* device.platform_data for SSP controller devices */ +struct pxa2xx_spi_master { + u32 clock_enable; + u16 num_chipselect; + u8 enable_dma; + + /* 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; +}; + +/* spi_board_info.controller_data for SPI slave devices, + * 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_master *info); + +#endif +#endif |