From: Daniel Mack <zonque@gmail.com>
Date: Wed, 14 Nov 2012 03:14:26 +0000 (+0800)
Subject: spi/omap: fix D0/D1 direction confusion
X-Git-Tag: firefly_0821_release~3680^2~1459^2~10^2~2^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2cd451792db174382aaca96c75bc3bf47a6065fe;p=firefly-linux-kernel-4.4.55.git

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>
---

diff --git a/Documentation/devicetree/bindings/spi/omap-spi.txt b/Documentation/devicetree/bindings/spi/omap-spi.txt
index 2ef0a6b85653..938809c6829b 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 51046332677c..89f73c425c3d 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 ce70f7b5a8e1..a65572d53211 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;