| |
| #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_*/ |
