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#ifndef __linux_pxa2xx_spi_h
15#define __linux_pxa2xx_spi_h
16
17#include <linux/pxa2xx_ssp.h>
18
19#define PXA2XX_CS_ASSERT (0x01)
20#define PXA2XX_CS_DEASSERT (0x02)
21
22struct dma_chan;
23
24/* device.platform_data for SSP controller devices */
25struct pxa2xx_spi_master {
26	u16 num_chipselect;
27	u8 enable_dma;
28
29	/* DMA engine specific config */
30	bool (*dma_filter)(struct dma_chan *chan, void *param);
31	void *tx_param;
32	void *rx_param;
33
34	/* For non-PXA arches */
35	struct ssp_device ssp;
36};
37
38/* spi_board_info.controller_data for SPI slave devices,
39 * copied to spi_device.platform_data ... mostly for dma tuning
40 */
41struct pxa2xx_spi_chip {
42	u8 tx_threshold;
43	u8 tx_hi_threshold;
44	u8 rx_threshold;
45	u8 dma_burst_size;
46	u32 timeout;
47	u8 enable_loopback;
48	int gpio_cs;
49	void (*cs_control)(u32 command);
50};
51
52#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
53
54#include <linux/clk.h>
55
56extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info);
57
58#endif
59#endif
60