[ARM] S3C24XX: Default SPI pin configuration for SPI

Add a set of default pin configuration routines for
setting up the SPI gpio configuration when using the
hardware SPI driver.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c b/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c
new file mode 100644
index 000000000000..8b403cbb53d2
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c
@@ -0,0 +1,37 @@
+/* linux/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c
+ *
+ * Copyright (c) 2008 Simtec Electronics
+ *      http://armlinux.simtec.co.uk/
+ *      Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C24XX SPI - gpio configuration for bus 0 on gpe11,12,13
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+*/
+
+#include <linux/kernel.h>
+
+#include <mach/hardware.h>
+
+#include <mach/spi.h>
+#include <mach/regs-gpio.h>
+
+void s3c24xx_spi_gpiocfg_bus0_gpe11_12_13(struct s3c2410_spi_info *spi,
+                                          int enable)
+{
+        if (enable) {
+                s3c2410_gpio_cfgpin(S3C2410_GPE13, S3C2410_GPE13_SPICLK0);
+                s3c2410_gpio_cfgpin(S3C2410_GPE12, S3C2410_GPE12_SPIMOSI0);
+                s3c2410_gpio_cfgpin(S3C2410_GPE11, S3C2410_GPE11_SPIMISO0);
+                s3c2410_gpio_pullup(S3C2410_GPE11, 0);
+                s3c2410_gpio_pullup(S3C2410_GPE13, 0);
+        } else {
+                s3c2410_gpio_cfgpin(S3C2410_GPE13, S3C2410_GPIO_INPUT);
+                s3c2410_gpio_cfgpin(S3C2410_GPE11, S3C2410_GPIO_INPUT);
+                s3c2410_gpio_pullup(S3C2410_GPE11, 1);
+                s3c2410_gpio_pullup(S3C2410_GPE12, 1);
+                s3c2410_gpio_pullup(S3C2410_GPE13, 1);
+        }
+}