powerpc/83xx: Add MCU LEDs support for MPC837xRDB and MPC8315RDB boards

There are two front-panel LEDs on MPC837xRDB and MPC8315RDB boards: PWR
and HDD. After adding appropriate nodes we can program these LEDs from
kernel and user space.

Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

6 files changed, 58 insertions, 0 deletions

diff --git a/arch/powerpc/boot/dts/mpc8315erdb.dts b/arch/powerpc/boot/dts/mpc8315erdb.dts
index 508b770d3dd..4dd08c32297 100644
--- a/arch/powerpc/boot/dts/mpc8315erdb.dts
+++ b/arch/powerpc/boot/dts/mpc8315erdb.dts
@@ -463,4 +463,18 @@
                                   0 0x00800000>;
                 };
         };
+
+        leds {
+                compatible = "gpio-leds";
+
+                pwr {
+                        gpios = <&mcu_pio 0 0>;
+                        default-state = "on";
+                };
+
+                hdd {
+                        gpios = <&mcu_pio 1 0>;
+                        linux,default-trigger = "ide-disk";
+                };
+        };
 };
diff --git a/arch/powerpc/boot/dts/mpc8377_rdb.dts b/arch/powerpc/boot/dts/mpc8377_rdb.dts
index 9e2264b1000..dbc1b988b29 100644
--- a/arch/powerpc/boot/dts/mpc8377_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8377_rdb.dts
@@ -486,4 +486,18 @@
                                   0 0x00800000>;
                 };
         };
+
+        leds {
+                compatible = "gpio-leds";
+
+                pwr {
+                        gpios = <&mcu_pio 0 0>;
+                        default-state = "on";
+                };
+
+                hdd {
+                        gpios = <&mcu_pio 1 0>;
+                        linux,default-trigger = "ide-disk";
+                };
+        };
 };
diff --git a/arch/powerpc/boot/dts/mpc8378_rdb.dts b/arch/powerpc/boot/dts/mpc8378_rdb.dts
index 4e6a1a407bb..3447eb9f6e8 100644
--- a/arch/powerpc/boot/dts/mpc8378_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8378_rdb.dts
@@ -470,4 +470,18 @@
                                   0 0x00800000>;
                 };
         };
+
+        leds {
+                compatible = "gpio-leds";
+
+                pwr {
+                        gpios = <&mcu_pio 0 0>;
+                        default-state = "on";
+                };
+
+                hdd {
+                        gpios = <&mcu_pio 1 0>;
+                        linux,default-trigger = "ide-disk";
+                };
+        };
 };
diff --git a/arch/powerpc/boot/dts/mpc8379_rdb.dts b/arch/powerpc/boot/dts/mpc8379_rdb.dts
index 72336d50452..15560c619b0 100644
--- a/arch/powerpc/boot/dts/mpc8379_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8379_rdb.dts
@@ -436,4 +436,18 @@
                 compatible = "fsl,mpc8349-pci";
                 device_type = "pci";
         };
+
+        leds {
+                compatible = "gpio-leds";
+
+                pwr {
+                        gpios = <&mcu_pio 0 0>;
+                        default-state = "on";
+                };
+
+                hdd {
+                        gpios = <&mcu_pio 1 0>;
+                        linux,default-trigger = "ide-disk";
+                };
+        };
 };
diff --git a/arch/powerpc/platforms/83xx/mpc831x_rdb.c b/arch/powerpc/platforms/83xx/mpc831x_rdb.c
index 0b4f883b20e..ae525e4745d 100644
--- a/arch/powerpc/platforms/83xx/mpc831x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc831x_rdb.c
@@ -74,6 +74,7 @@ static int __init mpc831x_rdb_probe(void)
 static struct of_device_id __initdata of_bus_ids[] = {
         { .compatible = "simple-bus" },
         { .compatible = "gianfar" },
+        { .compatible = "gpio-leds", },
         {},
 };
 
diff --git a/arch/powerpc/platforms/83xx/mpc837x_rdb.c b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
index a1908d26124..e00801c4254 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
@@ -72,6 +72,7 @@ static struct of_device_id mpc837x_ids[] = {
         { .compatible = "soc", },
         { .compatible = "simple-bus", },
         { .compatible = "gianfar", },
+        { .compatible = "gpio-leds", },
         {},
 };