MIPS: ath79: Add initial support for the Atheros AP81 reference board

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: 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/1952/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

4 files changed, 104 insertions, 0 deletions

diff --git a/arch/mips/ath79/Kconfig b/arch/mips/ath79/Kconfig
index cd6c738a916c..2e397708e2f7 100644
--- a/arch/mips/ath79/Kconfig
+++ b/arch/mips/ath79/Kconfig
@@ -2,6 +2,16 @@ if ATH79
 
 menu "Atheros AR71XX/AR724X/AR913X machine selection"
 
+config ATH79_MACH_AP81
+        bool "Atheros AP81 reference board"
+        select SOC_AR913X
+        select ATH79_DEV_GPIO_BUTTONS
+        select ATH79_DEV_LEDS_GPIO
+        select ATH79_DEV_SPI
+        help
+          Say 'Y' here if you want your kernel to support the
+          Atheros AP81 reference board.
+
 config ATH79_MACH_PB44
         bool "Atheros PB44 reference board"
         select SOC_AR71XX
diff --git a/arch/mips/ath79/Makefile b/arch/mips/ath79/Makefile
index 42f4295e650a..a245e3645271 100644
--- a/arch/mips/ath79/Makefile
+++ b/arch/mips/ath79/Makefile
@@ -23,4 +23,5 @@ obj-$(CONFIG_ATH79_DEV_SPI)		+= dev-spi.o
 #
 # Machines
 #
+obj-$(CONFIG_ATH79_MACH_AP81)           += mach-ap81.o
 obj-$(CONFIG_ATH79_MACH_PB44)           += mach-pb44.o
diff --git a/arch/mips/ath79/mach-ap81.c b/arch/mips/ath79/mach-ap81.c
new file mode 100644
index 000000000000..4e4ccd4f80d9
--- /dev/null
+++ b/arch/mips/ath79/mach-ap81.c
@@ -0,0 +1,92 @@
+/*
+ *  Atheros AP81 board support
+ *
+ *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2009 Imre Kaloz <kaloz@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 "machtypes.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "dev-spi.h"
+
+#define AP81_GPIO_LED_STATUS    1
+#define AP81_GPIO_LED_AOSS      3
+#define AP81_GPIO_LED_WLAN      6
+#define AP81_GPIO_LED_POWER     14
+
+#define AP81_GPIO_BTN_SW4       12
+#define AP81_GPIO_BTN_SW1       21
+
+#define AP81_KEYS_POLL_INTERVAL         20      /* msecs */
+#define AP81_KEYS_DEBOUNCE_INTERVAL     (3 * AP81_KEYS_POLL_INTERVAL)
+
+static struct gpio_led ap81_leds_gpio[] __initdata = {
+        {
+                .name           = "ap81:green:status",
+                .gpio           = AP81_GPIO_LED_STATUS,
+                .active_low     = 1,
+        }, {
+                .name           = "ap81:amber:aoss",
+                .gpio           = AP81_GPIO_LED_AOSS,
+                .active_low     = 1,
+        }, {
+                .name           = "ap81:green:wlan",
+                .gpio           = AP81_GPIO_LED_WLAN,
+                .active_low     = 1,
+        }, {
+                .name           = "ap81:green:power",
+                .gpio           = AP81_GPIO_LED_POWER,
+                .active_low     = 1,
+        }
+};
+
+static struct gpio_keys_button ap81_gpio_keys[] __initdata = {
+        {
+                .desc           = "sw1",
+                .type           = EV_KEY,
+                .code           = BTN_0,
+                .debounce_interval = AP81_KEYS_DEBOUNCE_INTERVAL,
+                .gpio           = AP81_GPIO_BTN_SW1,
+                .active_low     = 1,
+        } , {
+                .desc           = "sw4",
+                .type           = EV_KEY,
+                .code           = BTN_1,
+                .debounce_interval = AP81_KEYS_DEBOUNCE_INTERVAL,
+                .gpio           = AP81_GPIO_BTN_SW4,
+                .active_low     = 1,
+        }
+};
+
+static struct spi_board_info ap81_spi_info[] = {
+        {
+                .bus_num        = 0,
+                .chip_select    = 0,
+                .max_speed_hz   = 25000000,
+                .modalias       = "m25p64",
+        }
+};
+
+static struct ath79_spi_platform_data ap81_spi_data = {
+        .bus_num        = 0,
+        .num_chipselect = 1,
+};
+
+static void __init ap81_setup(void)
+{
+        ath79_register_leds_gpio(-1, ARRAY_SIZE(ap81_leds_gpio),
+                                 ap81_leds_gpio);
+        ath79_register_gpio_keys_polled(-1, AP81_KEYS_POLL_INTERVAL,
+                                        ARRAY_SIZE(ap81_gpio_keys),
+                                        ap81_gpio_keys);
+        ath79_register_spi(&ap81_spi_data, ap81_spi_info,
+                           ARRAY_SIZE(ap81_spi_info));
+}
+
+MIPS_MACHINE(ATH79_MACH_AP81, "AP81", "Atheros AP81 reference board",
+             ap81_setup);
diff --git a/arch/mips/ath79/machtypes.h b/arch/mips/ath79/machtypes.h
index a796fa3f92a3..3940fe470b2d 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_AP81,                /* Atheros AP81 reference board */
         ATH79_MACH_PB44,                /* Atheros PB44 reference board */
 };