| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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| 2 | /* |
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| 3 | * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs |
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| 4 | */ |
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| 5 | #ifndef __LINUX_SPI_PXA2XX_SPI_H |
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| 6 | #define __LINUX_SPI_PXA2XX_SPI_H |
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| 7 | |
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| 8 | #include <linux/types.h> |
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| 9 | |
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| 10 | #include <linux/pxa2xx_ssp.h> |
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| 11 | |
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| 12 | struct dma_chan; |
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| 13 | |
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| 14 | /* |
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| 15 | * The platform data for SSP controller devices |
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| 16 | * (resides in device.platform_data). |
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| 17 | */ |
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| 18 | struct pxa2xx_spi_controller { |
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| 19 | u16 num_chipselect; |
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| 20 | u8 enable_dma; |
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| 21 | u8 dma_burst_size; |
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| 22 | bool is_target; |
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| 23 | |
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| 24 | /* DMA engine specific config */ |
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| 25 | bool (*dma_filter)(struct dma_chan *chan, void *param); |
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| 26 | void *tx_param; |
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| 27 | void *rx_param; |
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| 28 | |
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| 29 | /* For non-PXA arches */ |
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| 30 | struct ssp_device ssp; |
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| 31 | }; |
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| 32 | |
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| 33 | /* |
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| 34 | * The controller specific data for SPI target devices |
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| 35 | * (resides in spi_board_info.controller_data), |
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| 36 | * copied to spi_device.platform_data ... mostly for |
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| 37 | * DMA tuning. |
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| 38 | */ |
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| 39 | struct pxa2xx_spi_chip { |
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| 40 | u8 tx_threshold; |
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| 41 | u8 tx_hi_threshold; |
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| 42 | u8 rx_threshold; |
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| 43 | u8 dma_burst_size; |
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| 44 | u32 timeout; |
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| 45 | }; |
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| 46 | |
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| 47 | #if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP) |
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| 48 | |
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| 49 | #include <linux/clk.h> |
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| 50 | |
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| 51 | extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_controller *info); |
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| 52 | |
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| 53 | #endif |
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| 54 | |
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| 55 | #endif /* __LINUX_SPI_PXA2XX_SPI_H */ |
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| 56 | |
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