[ARM] S3C64XX: Add standard S3C64XX 24BPP LCD GPIO setup

Add a standard helper to configure the LCD output pins for a 24BPP
display with VSYNC/HSYNC/VDEN.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

arch/arm/plat-s3c64xx/Kconfig

@@ -53,4 +53,9 @@ config S3C64XX_SETUP_I2C1
 	help
 	  Common setup code for i2c bus 1.
 
+config S3C64XX_SETUP_FB_24BPP
+	bool
+	help
+	  Common setup code for S3C64XX with an 24bpp RGB display helper.
+
 endif

arch/arm/plat-s3c64xx/Makefile

@@ -28,3 +28,4 @@ obj-$(CONFIG_CPU_S3C6400_CLOCK)	+= s3c6400-clock.o
 
 obj-$(CONFIG_S3C64XX_SETUP_I2C0) += setup-i2c0.o
 obj-$(CONFIG_S3C64XX_SETUP_I2C1) += setup-i2c1.o
+obj-$(CONFIG_S3C64XX_SETUP_FB_24BPP) += setup-fb-24bpp.o

arch/arm/plat-s3c64xx/setup-fb-24bpp.c

+/* linux/arch/arm/plat-s3c64xx/setup-fb-24bpp.c
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *	http://armlinux.simtec.co.uk/
+ *
+ * Base S3C64XX setup information for 24bpp LCD framebuffer
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fb.h>
+
+#include <mach/regs-fb.h>
+#include <mach/gpio.h>
+#include <plat/fb.h>
+#include <plat/gpio-cfg.h>
+
+extern void s3c64xx_fb_gpio_setup_24bpp(void)
+{
+	unsigned int gpio;
+
+	for (gpio = S3C64XX_GPI(0); gpio <= S3C64XX_GPI(15); gpio++) {
+		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
+		s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+	}
+
+	for (gpio = S3C64XX_GPJ(0); gpio <= S3C64XX_GPJ(11); gpio++) {
+		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
+		s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+	}
+}