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