kernel-ark/include/linux/platform_data/spi-imx.h
Arnd Bergmann 82906b13a6 ARM: imx: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the imx include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Sascha Hauer <kernel@pengutronix.de>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Dan Williams <djbw@fb.com>
Cc: "Ben Dooks (embedded platforms)" <ben-linux@fluff.org>
Cc: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Javier Martin <javier.martin@vista-silicon.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
2012-09-14 11:17:21 +02:00

28 lines
1.1 KiB
C

#ifndef __MACH_SPI_H_
#define __MACH_SPI_H_
/*
* struct spi_imx_master - device.platform_data for SPI controller devices.
* @chipselect: Array of chipselects for this master. Numbers >= 0 mean gpio
* pins, numbers < 0 mean internal CSPI chipselects according
* to MXC_SPI_CS(). Normally you want to use gpio based chip
* selects as the CSPI module tries to be intelligent about
* when to assert the chipselect: The CSPI module deasserts the
* chipselect once it runs out of input data. The other problem
* is that it is not possible to mix between high active and low
* active chipselects on one single bus using the internal
* chipselects. Unfortunately Freescale decided to put some
* chipselects on dedicated pins which are not usable as gpios,
* so we have to support the internal chipselects.
* @num_chipselect: ARRAY_SIZE(chipselect)
*/
struct spi_imx_master {
int *chipselect;
int num_chipselect;
};
#define MXC_SPI_CS(no) ((no) - 32)
#endif /* __MACH_SPI_H_*/