at91: add support for RSIs EWS board

This adds support for the RSI EWS machine (at91rm9200-based),
machine type 1609.

Includes fixes as suggested by Uwe Kleine-König and
cleanups as suggested by Russell and R.Schwebel.

Signed-off-by: Josef Holzmayr <holzmayr@rsi-elektrotechnik.de>
[nicolas.ferre@atmel.com: simplify board file header, move to at91_init_irq_default]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

1 files changed, 233 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/board-rsi-ews.c b/arch/arm/mach-at91/board-rsi-ews.c
new file mode 100644
index 000000000000..e927df0175df
--- /dev/null
+++ b/arch/arm/mach-at91/board-rsi-ews.c
@@ -0,0 +1,233 @@
+/*
+ * board-rsi-ews.c
+ *
+ *  Copyright (C)
+ *  2005 SAN People,
+ *  2008-2011 R-S-I Elektrotechnik GmbH & Co. KG
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/hardware.h>
+#include <mach/board.h>
+
+#include <linux/gpio.h>
+
+#include "generic.h"
+
+static void __init rsi_ews_init_early(void)
+{
+        /* Initialize processor: 18.432 MHz crystal */
+        at91_initialize(18432000);
+
+        /* Setup the LEDs */
+        at91_init_leds(AT91_PIN_PB6, AT91_PIN_PB9);
+
+        /* DBGU on ttyS0. (Rx & Tx only) */
+        /* This one is for debugging */
+        at91_register_uart(0, 0, 0);
+
+        /* USART1 on ttyS2. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
+        /* Dialin/-out modem interface */
+        at91_register_uart(AT91RM9200_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS
+                           | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
+                           | ATMEL_UART_RI);
+
+        /* USART3 on ttyS4. (Rx, Tx, RTS) */
+        /* RS485 communication */
+        at91_register_uart(AT91RM9200_ID_US3, 4, ATMEL_UART_RTS);
+
+        /* set serial console to ttyS0 (ie, DBGU) */
+        at91_set_serial_console(0);
+}
+
+/*
+ * Ethernet
+ */
+static struct at91_eth_data rsi_ews_eth_data __initdata = {
+        .phy_irq_pin    = AT91_PIN_PC4,
+        .is_rmii        = 1,
+};
+
+/*
+ * USB Host
+ */
+static struct at91_usbh_data rsi_ews_usbh_data __initdata = {
+        .ports          = 1,
+};
+
+/*
+ * SD/MC
+ */
+static struct at91_mmc_data rsi_ews_mmc_data __initdata = {
+        .slot_b         = 0,
+        .wire4          = 1,
+        .det_pin        = AT91_PIN_PB27,
+        .wp_pin         = AT91_PIN_PB29,
+};
+
+/*
+ * I2C
+ */
+static struct i2c_board_info rsi_ews_i2c_devices[] __initdata = {
+        {
+                I2C_BOARD_INFO("ds1337", 0x68),
+        },
+        {
+                I2C_BOARD_INFO("24c01", 0x50),
+        }
+};
+
+/*
+ * LEDs
+ */
+static struct gpio_led rsi_ews_leds[] = {
+        {
+                .name                   = "led0",
+                .gpio                   = AT91_PIN_PB6,
+                .active_low             = 0,
+        },
+        {
+                .name                   = "led1",
+                .gpio                   = AT91_PIN_PB7,
+                .active_low             = 0,
+        },
+        {
+                .name                   = "led2",
+                .gpio                   = AT91_PIN_PB8,
+                .active_low             = 0,
+        },
+        {
+                .name                   = "led3",
+                .gpio                   = AT91_PIN_PB9,
+                .active_low             = 0,
+        },
+};
+
+/*
+ * DataFlash
+ */
+static struct spi_board_info rsi_ews_spi_devices[] = {
+        {       /* DataFlash chip 1*/
+                .modalias       = "mtd_dataflash",
+                .chip_select    = 0,
+                .max_speed_hz   = 5 * 1000 * 1000,
+        },
+        {       /* DataFlash chip 2*/
+                .modalias       = "mtd_dataflash",
+                .chip_select    = 1,
+                .max_speed_hz   = 5 * 1000 * 1000,
+        },
+};
+
+/*
+ * NOR flash
+ */
+static struct mtd_partition rsiews_nor_partitions[] = {
+        {
+                .name           = "boot",
+                .offset         = 0,
+                .size           = 3 * SZ_128K,
+                .mask_flags     = MTD_WRITEABLE
+        },
+        {
+                .name           = "kernel",
+                .offset         = MTDPART_OFS_NXTBLK,
+                .size           = SZ_2M - (3 * SZ_128K)
+        },
+        {
+                .name           = "root",
+                .offset         = MTDPART_OFS_NXTBLK,
+                .size           = SZ_8M
+        },
+        {
+                .name           = "kernelupd",
+                .offset         = MTDPART_OFS_NXTBLK,
+                .size           = 3 * SZ_512K,
+                .mask_flags     = MTD_WRITEABLE
+        },
+        {
+                .name           = "rootupd",
+                .offset         = MTDPART_OFS_NXTBLK,
+                .size           = 9 * SZ_512K,
+                .mask_flags     = MTD_WRITEABLE
+        },
+};
+
+static struct physmap_flash_data rsiews_nor_data = {
+        .width          = 2,
+        .parts          = rsiews_nor_partitions,
+        .nr_parts       = ARRAY_SIZE(rsiews_nor_partitions),
+};
+
+#define NOR_BASE        AT91_CHIPSELECT_0
+#define NOR_SIZE        SZ_16M
+
+static struct resource nor_flash_resources[] = {
+        {
+                .start  = NOR_BASE,
+                .end    = NOR_BASE + NOR_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        }
+};
+
+static struct platform_device rsiews_nor_flash = {
+        .name           = "physmap-flash",
+        .id             = 0,
+        .dev            = {
+                                .platform_data  = &rsiews_nor_data,
+        },
+        .resource       = nor_flash_resources,
+        .num_resources  = ARRAY_SIZE(nor_flash_resources),
+};
+
+/*
+ * Init Func
+ */
+static void __init rsi_ews_board_init(void)
+{
+        /* Serial */
+        at91_add_device_serial();
+        at91_set_gpio_output(AT91_PIN_PA21, 0);
+        /* Ethernet */
+        at91_add_device_eth(&rsi_ews_eth_data);
+        /* USB Host */
+        at91_add_device_usbh(&rsi_ews_usbh_data);
+        /* I2C */
+        at91_add_device_i2c(rsi_ews_i2c_devices,
+                        ARRAY_SIZE(rsi_ews_i2c_devices));
+        /* SPI */
+        at91_add_device_spi(rsi_ews_spi_devices,
+                        ARRAY_SIZE(rsi_ews_spi_devices));
+        /* MMC */
+        at91_add_device_mmc(0, &rsi_ews_mmc_data);
+        /* NOR Flash */
+        platform_device_register(&rsiews_nor_flash);
+        /* LEDs */
+        at91_gpio_leds(rsi_ews_leds, ARRAY_SIZE(rsi_ews_leds));
+}
+
+MACHINE_START(RSI_EWS, "RSI EWS")
+        /* Maintainer: Josef Holzmayr <holzmayr@rsi-elektrotechnik.de> */
+        .timer          = &at91rm9200_timer,
+        .map_io         = at91_map_io,
+        .init_early     = rsi_ews_init_early,
+        .init_irq       = at91_init_irq_default,
+        .init_machine   = rsi_ews_board_init,
+MACHINE_END