Edit File: spi-imx.h
#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_*/