arm/imx21: Framebuffer support for i.MX21

This patch mimicks what Martin wrote on the mailing list:

* move arch/arm/mach-imx/include/mach/imxfb.h into
  arch/arm/mach-mxc/include/mach/imxfb.h
* changes Kconfig so that CONFIG_FB_IMX is selectable
* adds a platform device (copied from some pengutronix
  patches)

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx2/devices.c

@@ -228,6 +228,39 @@ struct platform_device mxc_nand_device = {
 	.resource = mxc_nand_resources,
 };
 
+#ifdef CONFIG_FB_IMX
+/*
+ * lcdc:
+ * - i.MX1: the basic controller
+ * - i.MX21: to be checked
+ * - i.MX27: like i.MX1, with slightly variations
+ */
+static struct resource mxc_fb[] = {
+	{
+		.start = LCDC_BASE_ADDR,
+		.end   = LCDC_BASE_ADDR + 0xFFF,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.start = MXC_INT_LCDC,
+		.end   = MXC_INT_LCDC,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+/* mxc lcd driver */
+struct platform_device mxc_fb_device = {
+	.name = "imx-fb",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(mxc_fb),
+	.resource = mxc_fb,
+	.dev = {
+		.coherent_dma_mask = 0xFFFFFFFF,
+	},
+};
+
+#endif
+
 /* GPIO port description */
 static struct mxc_gpio_port imx_gpio_ports[] = {
 	[0] = {

arch/arm/mach-mx2/devices.h

@@ -1,4 +1,3 @@
-
 extern struct platform_device mxc_gpt1;
 extern struct platform_device mxc_gpt2;
 extern struct platform_device mxc_gpt3;
@@ -14,3 +13,4 @@ extern struct platform_device mxc_uart_device4;
 extern struct platform_device mxc_uart_device5;
 extern struct platform_device mxc_w1_master_device;
 extern struct platform_device mxc_nand_device;
+extern struct platform_device mxc_fb_device;

drivers/video/Kconfig

@@ -397,7 +397,7 @@ config FB_SA1100
 
 config FB_IMX
 	tristate "Motorola i.MX LCD support"
-	depends on FB && ARM && ARCH_IMX
+	depends on FB && (ARCH_IMX || ARCH_MX2)
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT