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>
diff --git a/arch/mips/ath79/Kconfig b/arch/mips/ath79/Kconfig
index 50b9334..fabb2b0 100644
--- a/arch/mips/ath79/Kconfig
+++ b/arch/mips/ath79/Kconfig
@@ -1,5 +1,16 @@
if ATH79
+menu "Atheros AR71XX/AR724X/AR913X machine selection"
+
+config ATH79_MACH_PB44
+ bool "Atheros PB44 reference board"
+ select SOC_AR71XX
+ help
+ Say 'Y' here if you want your kernel to support the
+ Atheros PB44 reference board.
+
+endmenu
+
config SOC_AR71XX
def_bool n
diff --git a/arch/mips/ath79/Makefile b/arch/mips/ath79/Makefile
index e621d6c..c3093f7 100644
--- a/arch/mips/ath79/Makefile
+++ b/arch/mips/ath79/Makefile
@@ -16,3 +16,8 @@
# Devices
#
obj-y += dev-common.o
+
+#
+# Machines
+#
+obj-$(CONFIG_ATH79_MACH_PB44) += mach-pb44.o
diff --git a/arch/mips/ath79/mach-pb44.c b/arch/mips/ath79/mach-pb44.c
new file mode 100644
index 0000000..ffc24d7
--- /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);
diff --git a/arch/mips/ath79/machtypes.h b/arch/mips/ath79/machtypes.h
index fac0e26..a796fa3 100644
--- a/arch/mips/ath79/machtypes.h
+++ b/arch/mips/ath79/machtypes.h
@@ -16,6 +16,7 @@
enum ath79_mach_type {
ATH79_MACH_GENERIC = 0,
+ ATH79_MACH_PB44, /* Atheros PB44 reference board */
};
#endif /* _ATH79_MACHTYPE_H */