diff options
Diffstat (limited to 'include/linux/spi/pxa2xx_spi.h')
| -rw-r--r-- | include/linux/spi/pxa2xx_spi.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h new file mode 100644 index 000000000..4658e7801 --- /dev/null +++ b/include/linux/spi/pxa2xx_spi.h @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs + */ +#ifndef __LINUX_SPI_PXA2XX_SPI_H +#define __LINUX_SPI_PXA2XX_SPI_H + +#include <linux/types.h> + +#include <linux/pxa2xx_ssp.h> + +struct dma_chan; + +/* + * The platform data for SSP controller devices + * (resides in device.platform_data). + */ +struct pxa2xx_spi_controller { + u16 num_chipselect; + u8 enable_dma; + u8 dma_burst_size; + bool is_slave; + + /* 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; +}; + +/* + * The controller specific data for SPI slave devices + * (resides in spi_board_info.controller_data), + * 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; +}; + +#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP) + +#include <linux/clk.h> + +extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_controller *info); + +#endif + +#endif /* __LINUX_SPI_PXA2XX_SPI_H */ |