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| author | Daniel Mack <zonque@gmail.com> | 2012-11-14 11:14:26 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-11-14 12:16:17 +0900 |
| commit | 2cd451792db174382aaca96c75bc3bf47a6065fe (patch) | |
| tree | a16e2eed2823febb9b8057d64c1d95716bc1e4f5 | |
| parent | 0384e90b853357d24935c65ba0e1bdd27faa6e58 (diff) | |
| download | linux-3.10-2cd451792db174382aaca96c75bc3bf47a6065fe.tar.gz linux-3.10-2cd451792db174382aaca96c75bc3bf47a6065fe.tar.bz2 linux-3.10-2cd451792db174382aaca96c75bc3bf47a6065fe.zip | |
spi/omap: fix D0/D1 direction confusion
0384e90b8 ("spi/mcspi: allow configuration of pin directions") did what
it claimed to do the wrong way around. D0/D1 is configured as output by
*clearing* the bits in the conf registers, hence also breaking the
former default behaviour.
Fix this before that change is merged to mainline.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | Documentation/devicetree/bindings/spi/omap-spi.txt | 6 | ||||
| -rw-r--r-- | drivers/spi/spi-omap2-mcspi.c | 6 | ||||
| -rw-r--r-- | include/linux/platform_data/spi-omap2-mcspi.h | 4 |
3 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/spi/omap-spi.txt b/Documentation/devicetree/bindings/spi/omap-spi.txt index 2ef0a6b8565..938809c6829 100644 --- a/Documentation/devicetree/bindings/spi/omap-spi.txt +++ b/Documentation/devicetree/bindings/spi/omap-spi.txt @@ -6,9 +6,9 @@ Required properties: - "ti,omap4-spi" for OMAP4+. - ti,spi-num-cs : Number of chipselect supported by the instance. - ti,hwmods: Name of the hwmod associated to the McSPI -- ti,pindir-d0-in-d1-out: Select the D0 pin as input and D1 as - output. The default is D0 as output and - D1 as input. +- ti,pindir-d0-out-d1-in: Select the D0 pin as output and D1 as + input. The default is D0 as input and + D1 as output. Example: diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index 51046332677..89f73c425c3 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -766,7 +766,7 @@ static int omap2_mcspi_setup_transfer(struct spi_device *spi, /* standard 4-wire master mode: SCK, MOSI/out, MISO/in, nCS * REVISIT: this controller could support SPI_3WIRE mode. */ - if (mcspi->pin_dir == MCSPI_PINDIR_D0_OUT_D1_IN) { + if (mcspi->pin_dir == MCSPI_PINDIR_D0_IN_D1_OUT) { l &= ~OMAP2_MCSPI_CHCONF_IS; l &= ~OMAP2_MCSPI_CHCONF_DPE1; l |= OMAP2_MCSPI_CHCONF_DPE0; @@ -1188,8 +1188,8 @@ static int __devinit omap2_mcspi_probe(struct platform_device *pdev) of_property_read_u32(node, "ti,spi-num-cs", &num_cs); master->num_chipselect = num_cs; master->bus_num = bus_num++; - if (of_get_property(node, "ti,pindir-d0-in-d1-out", NULL)) - mcspi->pin_dir = MCSPI_PINDIR_D0_IN_D1_OUT; + if (of_get_property(node, "ti,pindir-d0-out-d1-in", NULL)) + mcspi->pin_dir = MCSPI_PINDIR_D0_OUT_D1_IN; } else { pdata = pdev->dev.platform_data; master->num_chipselect = pdata->num_cs; diff --git a/include/linux/platform_data/spi-omap2-mcspi.h b/include/linux/platform_data/spi-omap2-mcspi.h index ce70f7b5a8e..a65572d5321 100644 --- a/include/linux/platform_data/spi-omap2-mcspi.h +++ b/include/linux/platform_data/spi-omap2-mcspi.h @@ -7,8 +7,8 @@ #define OMAP4_MCSPI_REG_OFFSET 0x100 -#define MCSPI_PINDIR_D0_OUT_D1_IN 0 -#define MCSPI_PINDIR_D0_IN_D1_OUT 1 +#define MCSPI_PINDIR_D0_IN_D1_OUT 0 +#define MCSPI_PINDIR_D0_OUT_D1_IN 1 struct omap2_mcspi_platform_config { unsigned short num_cs; |