diff options
| author | David S. Miller <davem@davemloft.net> | 2012-10-02 23:02:10 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-10-02 23:02:10 -0400 |
| commit | 954f9ac43b87b44152b8c21163cefd466a87145e (patch) | |
| tree | 31c4197f975c66c96976948663e6ce844900b41a /include/linux/platform_data/spi-imx.h | |
| parent | 1b62ca7bf5775bed048032b7e779561e1fe66aa0 (diff) | |
| parent | 7fe0b14b725d6d09a1d9e1409bd465cb88b587f9 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
There's a Niagara 2 memcpy fix in this tree and I have
a Kconfig fix from Dave Jones which requires the sparc-next
changes which went upstream yesterday.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/platform_data/spi-imx.h')
| -rw-r--r-- | include/linux/platform_data/spi-imx.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/platform_data/spi-imx.h b/include/linux/platform_data/spi-imx.h new file mode 100644 index 000000000000..08be445e8eb8 --- /dev/null +++ b/include/linux/platform_data/spi-imx.h @@ -0,0 +1,27 @@ + +#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_*/ |