MIPS: ath79: add initial support for the Atheros PB44 reference board

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1950/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/arch/mips/ath79/mach-pb44.c b/arch/mips/ath79/mach-pb44.c
new file mode 100644
index 000000000000..ffc24d7a2552
--- /dev/null
+++ b/arch/mips/ath79/mach-pb44.c
@@ -0,0 +1,56 @@
+/*
+ *  Atheros PB44 reference board support
+ *
+ *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  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/i2c.h>
+#include <linux/i2c-gpio.h>
+#include <linux/i2c/pcf857x.h>
+
+#include "machtypes.h"
+
+#define PB44_GPIO_I2C_SCL	0
+#define PB44_GPIO_I2C_SDA	1
+
+#define PB44_GPIO_EXP_BASE	16
+
+static struct i2c_gpio_platform_data pb44_i2c_gpio_data = {
+	.sda_pin        = PB44_GPIO_I2C_SDA,
+	.scl_pin        = PB44_GPIO_I2C_SCL,
+};
+
+static struct platform_device pb44_i2c_gpio_device = {
+	.name		= "i2c-gpio",
+	.id		= 0,
+	.dev = {
+		.platform_data	= &pb44_i2c_gpio_data,
+	}
+};
+
+static struct pcf857x_platform_data pb44_pcf857x_data = {
+	.gpio_base	= PB44_GPIO_EXP_BASE,
+};
+
+static struct i2c_board_info pb44_i2c_board_info[] __initdata = {
+	{
+		I2C_BOARD_INFO("pcf8575", 0x20),
+		.platform_data  = &pb44_pcf857x_data,
+	},
+};
+
+static void __init pb44_init(void)
+{
+	i2c_register_board_info(0, pb44_i2c_board_info,
+				ARRAY_SIZE(pb44_i2c_board_info));
+	platform_device_register(&pb44_i2c_gpio_device);
+}
+
+MIPS_MACHINE(ATH79_MACH_PB44, "PB44", "Atheros PB44 reference board",
+	     pb44_init);