spi: pxa2xx_spi: introduce chipselect GPIO to simplify the common cases
[deliverable/linux.git] / arch / arm / mach-pxa / include / mach / pxa2xx_spi.h
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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 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 */
18
19#ifndef PXA2XX_SPI_H_
20#define PXA2XX_SPI_H_
21
22#define PXA2XX_CS_ASSERT (0x01)
23#define PXA2XX_CS_DEASSERT (0x02)
24
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25/* device.platform_data for SSP controller devices */
26struct pxa2xx_spi_master {
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27 u32 clock_enable;
28 u16 num_chipselect;
29 u8 enable_dma;
30};
31
32/* spi_board_info.controller_data for SPI slave devices,
33 * copied to spi_device.platform_data ... mostly for dma tuning
34 */
35struct pxa2xx_spi_chip {
36 u8 tx_threshold;
37 u8 rx_threshold;
38 u8 dma_burst_size;
8d94cc50 39 u32 timeout;
e0c9905e 40 u8 enable_loopback;
a7bb3909 41 int gpio_cs;
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42 void (*cs_control)(u32 command);
43};
44
e172274c
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45extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info);
46
e0c9905e 47#endif /*PXA2XX_SPI_H_*/
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