| #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_*/ |