From 130551928195bdef3369e13572b9a383400681bb Mon Sep 17 00:00:00 2001
From: Hartley Sweeten <hartleys@visionengravers.com>
Date: Thu, 27 Jan 2011 17:50:53 +0100
Subject: ARM: 6643/1: ep93xx: add framebuffer support to edb93xx boards

The ep9307, ep9312, and ep9315 variants of the ep93xx processor include
the raster engine needed for framebuffer support.

This allows the EDB93xx boards with those processors to use the
framebuffer driver.

Tested on an EDB9307A with the following kernel parameters:
	video=640x480-16@60
	video=1024x768-16@60

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-ep93xx/edb93xx.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

(limited to 'arch')

diff --git a/arch/arm/mach-ep93xx/edb93xx.c b/arch/arm/mach-ep93xx/edb93xx.c
index 4b043165213..fad371df40e 100644
--- a/arch/arm/mach-ep93xx/edb93xx.c
+++ b/arch/arm/mach-ep93xx/edb93xx.c
@@ -32,6 +32,7 @@
 #include <linux/i2c-gpio.h>
 
 #include <mach/hardware.h>
+#include <mach/fb.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -111,6 +112,37 @@ static void __init edb93xx_register_pwm(void)
 }
 
 
+/*************************************************************************
+ * EDB93xx framebuffer
+ *************************************************************************/
+static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
+	.num_modes	= EP93XXFB_USE_MODEDB,
+	.bpp		= 16,
+	.flags		= 0,
+};
+
+static int __init edb93xx_has_fb(void)
+{
+	/* These platforms have an ep93xx with video capability */
+	return machine_is_edb9307() || machine_is_edb9307a() ||
+	       machine_is_edb9312() || machine_is_edb9315() ||
+	       machine_is_edb9315a();
+}
+
+static void __init edb93xx_register_fb(void)
+{
+	if (!edb93xx_has_fb())
+		return;
+
+	if (machine_is_edb9307a() || machine_is_edb9315a())
+		edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
+	else
+		edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
+
+	ep93xx_register_fb(&edb93xxfb_info);
+}
+
+
 static void __init edb93xx_init_machine(void)
 {
 	ep93xx_init_devices();
@@ -118,6 +150,7 @@ static void __init edb93xx_init_machine(void)
 	ep93xx_register_eth(&edb93xx_eth_data, 1);
 	edb93xx_register_i2c();
 	edb93xx_register_pwm();
+	edb93xx_register_fb();
 }
 
 
-- 
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