Thomas Gleixner | c942fdd | 2019-05-27 08:55:06 +0200 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
Stephen Street | e0c9905 | 2006-03-07 23:53:24 -0800 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs |
Stephen Street | e0c9905 | 2006-03-07 23:53:24 -0800 | [diff] [blame] | 4 | */ |
Sebastian Andrzej Siewior | 8348c25 | 2010-11-22 17:12:15 -0800 | [diff] [blame] | 5 | #ifndef __linux_pxa2xx_spi_h |
| 6 | #define __linux_pxa2xx_spi_h |
Stephen Street | e0c9905 | 2006-03-07 23:53:24 -0800 | [diff] [blame] | 7 | |
Sebastian Andrzej Siewior | 8348c25 | 2010-11-22 17:12:15 -0800 | [diff] [blame] | 8 | #include <linux/pxa2xx_ssp.h> |
Stephen Street | e0c9905 | 2006-03-07 23:53:24 -0800 | [diff] [blame] | 9 | |
| 10 | #define PXA2XX_CS_ASSERT (0x01) |
| 11 | #define PXA2XX_CS_DEASSERT (0x02) |
| 12 | |
Mika Westerberg | b729bf3 | 2014-08-19 20:29:19 +0300 | [diff] [blame] | 13 | struct dma_chan; |
| 14 | |
Stephen Street | e0c9905 | 2006-03-07 23:53:24 -0800 | [diff] [blame] | 15 | /* device.platform_data for SSP controller devices */ |
Lubomir Rintel | 51eea52 | 2019-01-16 16:13:31 +0100 | [diff] [blame] | 16 | struct pxa2xx_spi_controller { |
Stephen Street | e0c9905 | 2006-03-07 23:53:24 -0800 | [diff] [blame] | 17 | u16 num_chipselect; |
| 18 | u8 enable_dma; |
Andy Shevchenko | 37821a8 | 2019-03-19 17:48:42 +0200 | [diff] [blame] | 19 | u8 dma_burst_size; |
Lubomir Rintel | ec93cb6 | 2018-11-13 11:22:25 +0100 | [diff] [blame] | 20 | bool is_slave; |
Mika Westerberg | 851bacf | 2013-01-07 12:44:33 +0200 | [diff] [blame] | 21 | |
Mika Westerberg | 5928808 | 2013-01-22 12:26:29 +0200 | [diff] [blame] | 22 | /* DMA engine specific config */ |
Mika Westerberg | b729bf3 | 2014-08-19 20:29:19 +0300 | [diff] [blame] | 23 | bool (*dma_filter)(struct dma_chan *chan, void *param); |
| 24 | void *tx_param; |
| 25 | void *rx_param; |
Mika Westerberg | 5928808 | 2013-01-22 12:26:29 +0200 | [diff] [blame] | 26 | |
Mika Westerberg | 851bacf | 2013-01-07 12:44:33 +0200 | [diff] [blame] | 27 | /* For non-PXA arches */ |
| 28 | struct ssp_device ssp; |
Stephen Street | e0c9905 | 2006-03-07 23:53:24 -0800 | [diff] [blame] | 29 | }; |
| 30 | |
| 31 | /* spi_board_info.controller_data for SPI slave devices, |
| 32 | * copied to spi_device.platform_data ... mostly for dma tuning |
| 33 | */ |
| 34 | struct pxa2xx_spi_chip { |
| 35 | u8 tx_threshold; |
Mika Westerberg | a0d2642 | 2013-01-22 12:26:32 +0200 | [diff] [blame] | 36 | u8 tx_hi_threshold; |
Stephen Street | e0c9905 | 2006-03-07 23:53:24 -0800 | [diff] [blame] | 37 | u8 rx_threshold; |
| 38 | u8 dma_burst_size; |
Stephen Street | 8d94cc5 | 2006-12-10 02:18:54 -0800 | [diff] [blame] | 39 | u32 timeout; |
Stephen Street | e0c9905 | 2006-03-07 23:53:24 -0800 | [diff] [blame] | 40 | u8 enable_loopback; |
Eric Miao | a7bb390 | 2009-04-06 19:00:54 -0700 | [diff] [blame] | 41 | int gpio_cs; |
Stephen Street | e0c9905 | 2006-03-07 23:53:24 -0800 | [diff] [blame] | 42 | void (*cs_control)(u32 command); |
| 43 | }; |
| 44 | |
Qiao Zhou | 6017221 | 2012-06-04 10:41:03 +0800 | [diff] [blame] | 45 | #if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP) |
Sebastian Andrzej Siewior | d6ea3df | 2010-11-24 10:17:14 +0100 | [diff] [blame] | 46 | |
| 47 | #include <linux/clk.h> |
Sebastian Andrzej Siewior | d6ea3df | 2010-11-24 10:17:14 +0100 | [diff] [blame] | 48 | |
Lubomir Rintel | 51eea52 | 2019-01-16 16:13:31 +0100 | [diff] [blame] | 49 | extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_controller *info); |
Guennadi Liakhovetski | e172274 | 2008-06-13 09:17:31 +0100 | [diff] [blame] | 50 | |
Sebastian Andrzej Siewior | d6ea3df | 2010-11-24 10:17:14 +0100 | [diff] [blame] | 51 | #endif |
Sebastian Andrzej Siewior | 8348c25 | 2010-11-22 17:12:15 -0800 | [diff] [blame] | 52 | #endif |