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-rw-r--r--arch/mips/alchemy/gpr/platform.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/arch/mips/alchemy/gpr/platform.c b/arch/mips/alchemy/gpr/platform.c
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+++ b/arch/mips/alchemy/gpr/platform.c
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+/*
+ * GPR board platform device registration
+ *
+ * Copyright (C) 2010 Wolfgang Grandegger <wg@denx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/i2c-gpio.h>
+
+#include <asm/mach-au1x00/au1000.h>
+
+/*
+ * Watchdog
+ */
+static struct resource gpr_wdt_resource[] = {
+ [0] = {
+ .start = 1,
+ .end = 1,
+ .name = "gpr-adm6320-wdt",
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static struct platform_device gpr_wdt_device = {
+ .name = "adm6320-wdt",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(gpr_wdt_resource),
+ .resource = gpr_wdt_resource,
+};
+
+/*
+ * FLASH
+ *
+ * 0x00000000-0x00200000 : "kernel"
+ * 0x00200000-0x00a00000 : "rootfs"
+ * 0x01d00000-0x01f00000 : "config"
+ * 0x01c00000-0x01d00000 : "yamon"
+ * 0x01d00000-0x01d40000 : "yamon env vars"
+ * 0x00000000-0x00a00000 : "kernel+rootfs"
+ */
+static struct mtd_partition gpr_mtd_partitions[] = {
+ {
+ .name = "kernel",
+ .size = 0x00200000,
+ .offset = 0,
+ },
+ {
+ .name = "rootfs",
+ .size = 0x00800000,
+ .offset = MTDPART_OFS_APPEND,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ {
+ .name = "config",
+ .size = 0x00200000,
+ .offset = 0x01d00000,
+ },
+ {
+ .name = "yamon",
+ .size = 0x00100000,
+ .offset = 0x01c00000,
+ },
+ {
+ .name = "yamon env vars",
+ .size = 0x00040000,
+ .offset = MTDPART_OFS_APPEND,
+ },
+ {
+ .name = "kernel+rootfs",
+ .size = 0x00a00000,
+ .offset = 0,
+ },
+};
+
+static struct physmap_flash_data gpr_flash_data = {
+ .width = 4,
+ .nr_parts = ARRAY_SIZE(gpr_mtd_partitions),
+ .parts = gpr_mtd_partitions,
+};
+
+static struct resource gpr_mtd_resource = {
+ .start = 0x1e000000,
+ .end = 0x1fffffff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device gpr_mtd_device = {
+ .name = "physmap-flash",
+ .dev = {
+ .platform_data = &gpr_flash_data,
+ },
+ .num_resources = 1,
+ .resource = &gpr_mtd_resource,
+};
+
+/*
+ * LEDs
+ */
+static struct gpio_led gpr_gpio_leds[] = {
+ { /* green */
+ .name = "gpr:green",
+ .gpio = 4,
+ .active_low = 1,
+ },
+ { /* red */
+ .name = "gpr:red",
+ .gpio = 5,
+ .active_low = 1,
+ }
+};
+
+static struct gpio_led_platform_data gpr_led_data = {
+ .num_leds = ARRAY_SIZE(gpr_gpio_leds),
+ .leds = gpr_gpio_leds,
+};
+
+static struct platform_device gpr_led_devices = {
+ .name = "leds-gpio",
+ .id = -1,
+ .dev = {
+ .platform_data = &gpr_led_data,
+ }
+};
+
+/*
+ * I2C
+ */
+static struct i2c_gpio_platform_data gpr_i2c_data = {
+ .sda_pin = 209,
+ .sda_is_open_drain = 1,
+ .scl_pin = 210,
+ .scl_is_open_drain = 1,
+ .udelay = 2, /* ~100 kHz */
+ .timeout = HZ,
+ };
+
+static struct platform_device gpr_i2c_device = {
+ .name = "i2c-gpio",
+ .id = -1,
+ .dev.platform_data = &gpr_i2c_data,
+};
+
+static struct i2c_board_info gpr_i2c_info[] __initdata = {
+ {
+ I2C_BOARD_INFO("lm83", 0x18),
+ .type = "lm83"
+ }
+};
+
+static struct platform_device *gpr_devices[] __initdata = {
+ &gpr_wdt_device,
+ &gpr_mtd_device,
+ &gpr_i2c_device,
+ &gpr_led_devices,
+};
+
+static int __init gpr_dev_init(void)
+{
+ i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info));
+
+ return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices));
+}
+device_initcall(gpr_dev_init);