avr32: add support for EarthLCD Favr-32 board

This patch adds support for the Favr-32 board made by EarthLCD.

This kit, which is also called ezLCD-101, has a 10.4" touch screen LCD panel,
16 MB 32-bit SDRAM, 8 MB parallel flash, Ethernet, audio out, USB device,
SD-card slot, USART and various other connectors for cennecting stuff to SPI,
I2C, GPIO, etc.

Signed-off-by: Hans-Christian Egtvedt <[email protected]>
Signed-off-by: Haavard Skinnemoen <[email protected]>

arch/avr32/Kconfig

@@ -119,10 +119,15 @@ config BOARD_ATSTK1000
 config BOARD_ATNGW100
 	bool "ATNGW100 Network Gateway"
 	select CPU_AT32AP7000
+
+config BOARD_FAVR_32
+	bool "Favr-32 LCD-board"
+	select CPU_AT32AP7000
 endchoice
 
 source "arch/avr32/boards/atstk1000/Kconfig"
 source "arch/avr32/boards/atngw100/Kconfig"
+source "arch/avr32/boards/favr-32/Kconfig"
 
 choice
 	prompt "Boot loader type"

arch/avr32/Makefile

@@ -33,6 +33,7 @@ head-y					+= arch/avr32/kernel/head.o
 core-y					+= $(machdirs)
 core-$(CONFIG_BOARD_ATSTK1000)		+= arch/avr32/boards/atstk1000/
 core-$(CONFIG_BOARD_ATNGW100)		+= arch/avr32/boards/atngw100/
+core-$(CONFIG_BOARD_FAVR_32)		+= arch/avr32/boards/favr-32/
 core-$(CONFIG_LOADER_U_BOOT)		+= arch/avr32/boot/u-boot/
 core-y					+= arch/avr32/kernel/
 core-y					+= arch/avr32/mm/

arch/avr32/boards/favr-32/Kconfig

@@ -0,0 +1,22 @@
+# Favr-32 customization
+
+if BOARD_FAVR_32
+
+config BOARD_FAVR32_ABDAC_RATE
+	int "DAC target rate"
+	default 44100
+	range 32000 50000
+	help
+	  Specify the target rate the internal DAC should try to match. This
+	  will use PLL1 to generate a frequency as close as possible to this
+	  rate.
+
+	  Must be within the range 32000 to 50000, which should be suitable to
+	  generate most other frequencies in power of 2 steps.
+
+	  Ex:
+		48000 will also suit 24000 and 12000
+		44100 will also suit 22050 and 11025
+		32000 will also suit 16000 and 8000
+
+endif # BOARD_FAVR_32

arch/avr32/boards/favr-32/Makefile

@@ -0,0 +1 @@
+obj-y	+= setup.o flash.o

arch/avr32/boards/favr-32/flash.c

@@ -0,0 +1,98 @@
+/*
+ * Favr-32 board-specific flash initialization
+ *
+ * Copyright (C) 2008 Atmel Corporation
+ *
+ * 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/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/arch/smc.h>
+
+static struct smc_timing flash_timing __initdata = {
+	.ncs_read_setup		= 0,
+	.nrd_setup		= 40,
+	.ncs_write_setup	= 0,
+	.nwe_setup		= 10,
+
+	.ncs_read_pulse		= 80,
+	.nrd_pulse		= 40,
+	.ncs_write_pulse	= 65,
+	.nwe_pulse		= 55,
+
+	.read_cycle		= 120,
+	.write_cycle		= 120,
+};
+
+static struct smc_config flash_config __initdata = {
+	.bus_width		= 2,
+	.nrd_controlled		= 1,
+	.nwe_controlled		= 1,
+	.byte_write		= 1,
+};
+
+static struct mtd_partition flash_parts[] = {
+	{
+		.name           = "u-boot",
+		.offset         = 0x00000000,
+		.size           = 0x00020000,           /* 128 KiB */
+		.mask_flags     = MTD_WRITEABLE,
+	},
+	{
+		.name           = "root",
+		.offset         = 0x00020000,
+		.size           = 0x007d0000,
+	},
+	{
+		.name           = "env",
+		.offset         = 0x007f0000,
+		.size           = 0x00010000,
+		.mask_flags     = MTD_WRITEABLE,
+	},
+};
+
+static struct physmap_flash_data flash_data = {
+	.width		= 2,
+	.nr_parts	= ARRAY_SIZE(flash_parts),
+	.parts		= flash_parts,
+};
+
+static struct resource flash_resource = {
+	.start		= 0x00000000,
+	.end		= 0x007fffff,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device flash_device = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.resource	= &flash_resource,
+	.num_resources	= 1,
+	.dev		= {
+		.platform_data = &flash_data,
+	},
+};
+
+/* This needs to be called after the SMC has been initialized */
+static int __init favr32_flash_init(void)
+{
+	int ret;
+
+	smc_set_timing(&flash_config, &flash_timing);
+	ret = smc_set_configuration(0, &flash_config);
+	if (ret < 0) {
+		printk(KERN_ERR "Favr-32: failed to set NOR flash timing\n");
+		return ret;
+	}
+
+	platform_device_register(&flash_device);
+
+	return 0;
+}
+device_initcall(favr32_flash_init);