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spi/mcspi: allow configuration of pin directions

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Allow D0 to be an input and D1 to be an output, configurable via
platform data and a new DT property.

Based on a patch from  Matus Ujhelyi <matus.ujhelyi@streamunlimited.com>

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Daniel Mack 2012-10-07 18:19:44 +02:00 • committed by Mark Brown
parent ddffeb8c4d
commit 0384e90b85
3 changed files with 25 additions and 8 deletions
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4
include/linux/platform_data/spi-omap2-mcspi.h
View file

@ -7,9 +7,13 @@
#define OMAP4_MCSPI_REG_OFFSET 0x100
#define MCSPI_PINDIR_D0_OUT_D1_IN 0
#define MCSPI_PINDIR_D0_IN_D1_OUT 1
struct omap2_mcspi_platform_config {
unsigned short num_cs;
unsigned int regs_offset;
unsigned int pin_dir:1;
};
struct omap2_mcspi_dev_attr {