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Thomas Gleixnerc942fdd2019-05-27 08:55:06 +02001/* SPDX-License-Identifier: GPL-2.0-or-later */
Stephen Streete0c99052006-03-07 23:53:24 -08002/*
3 * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs
Stephen Streete0c99052006-03-07 23:53:24 -08004 */
Sebastian Andrzej Siewior8348c252010-11-22 17:12:15 -08005#ifndef __linux_pxa2xx_spi_h
6#define __linux_pxa2xx_spi_h
Stephen Streete0c99052006-03-07 23:53:24 -08007
Sebastian Andrzej Siewior8348c252010-11-22 17:12:15 -08008#include <linux/pxa2xx_ssp.h>
Stephen Streete0c99052006-03-07 23:53:24 -08009
10#define PXA2XX_CS_ASSERT (0x01)
11#define PXA2XX_CS_DEASSERT (0x02)
12
Mika Westerbergb729bf32014-08-19 20:29:19 +030013struct dma_chan;
14
Stephen Streete0c99052006-03-07 23:53:24 -080015/* device.platform_data for SSP controller devices */
Lubomir Rintel51eea522019-01-16 16:13:31 +010016struct pxa2xx_spi_controller {
Stephen Streete0c99052006-03-07 23:53:24 -080017 u16 num_chipselect;
18 u8 enable_dma;
Andy Shevchenko37821a82019-03-19 17:48:42 +020019 u8 dma_burst_size;
Lubomir Rintelec93cb62018-11-13 11:22:25 +010020 bool is_slave;
Mika Westerberg851bacf2013-01-07 12:44:33 +020021
Mika Westerberg59288082013-01-22 12:26:29 +020022 /* DMA engine specific config */
Mika Westerbergb729bf32014-08-19 20:29:19 +030023 bool (*dma_filter)(struct dma_chan *chan, void *param);
24 void *tx_param;
25 void *rx_param;
Mika Westerberg59288082013-01-22 12:26:29 +020026
Mika Westerberg851bacf2013-01-07 12:44:33 +020027 /* For non-PXA arches */
28 struct ssp_device ssp;
Stephen Streete0c99052006-03-07 23:53:24 -080029};
30
31/* spi_board_info.controller_data for SPI slave devices,
32 * copied to spi_device.platform_data ... mostly for dma tuning
33 */
34struct pxa2xx_spi_chip {
35 u8 tx_threshold;
Mika Westerberga0d26422013-01-22 12:26:32 +020036 u8 tx_hi_threshold;
Stephen Streete0c99052006-03-07 23:53:24 -080037 u8 rx_threshold;
38 u8 dma_burst_size;
Stephen Street8d94cc52006-12-10 02:18:54 -080039 u32 timeout;
Stephen Streete0c99052006-03-07 23:53:24 -080040 u8 enable_loopback;
Eric Miaoa7bb3902009-04-06 19:00:54 -070041 int gpio_cs;
Stephen Streete0c99052006-03-07 23:53:24 -080042 void (*cs_control)(u32 command);
43};
44
Qiao Zhou60172212012-06-04 10:41:03 +080045#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
Sebastian Andrzej Siewiord6ea3df2010-11-24 10:17:14 +010046
47#include <linux/clk.h>
Sebastian Andrzej Siewiord6ea3df2010-11-24 10:17:14 +010048
Lubomir Rintel51eea522019-01-16 16:13:31 +010049extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_controller *info);
Guennadi Liakhovetskie1722742008-06-13 09:17:31 +010050
Sebastian Andrzej Siewiord6ea3df2010-11-24 10:17:14 +010051#endif
Sebastian Andrzej Siewior8348c252010-11-22 17:12:15 -080052#endif