ARM: integrator: move core module LED to device tree

This gets rid of the custom LED driver in the Integrator directory
altogether and switches us over to using the syscon LEDs for this.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/arch/arm/boot/dts/integrator.dtsi b/arch/arm/boot/dts/integrator.dtsi
index 5d27087..28e38f8 100644 (file)
--- a/arch/arm/boot/dts/integrator.dtsi
+++ b/arch/arm/boot/dts/integrator.dtsi
@@ -8,6 +8,16 @@
        core-module@10000000 {
                compatible = "arm,core-module-integrator", "syscon";
                reg = <0x10000000 0x200>;
+
+               /* Use core module LED to indicate CPU load */
+               led@0c.0 {
+                       compatible = "register-bit-led";
+                       offset = <0x0c>;
+                       mask = <0x01>;
+                       label = "integrator:core_module";
+                       linux,default-trigger = "cpu0";
+                       default-state = "on";
+               };
        };
 
        ebi@12000000 {

diff --git a/arch/arm/mach-integrator/Makefile b/arch/arm/mach-integrator/Makefile
index ec759de..1ebe453 100644 (file)
--- a/arch/arm/mach-integrator/Makefile
+++ b/arch/arm/mach-integrator/Makefile
@@ -4,7 +4,7 @@
 
 # Object file lists.
 
-obj-y                                  := core.o lm.o leds.o
+obj-y                                  := core.o lm.o
 obj-$(CONFIG_ARCH_INTEGRATOR_AP)       += integrator_ap.o
 obj-$(CONFIG_ARCH_INTEGRATOR_CP)       += integrator_cp.o
 

diff --git a/arch/arm/mach-integrator/leds.c b/arch/arm/mach-integrator/leds.c
deleted file mode 100644 (file)
index 56f2437..0000000
--- a/arch/arm/mach-integrator/leds.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Driver for the 4 user LEDs found on the Integrator AP/CP baseboard
- * Based on Versatile and RealView machine LED code
- *
- * License terms: GNU General Public License (GPL) version 2
- * Author: Bryan Wu <bryan.wu@canonical.com>
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/leds.h>
-
-#include "hardware.h"
-#include "cm.h"
-
-#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
-
-struct integrator_led {
-       struct led_classdev     cdev;
-};
-
-/*
- * The triggers lines up below will only be used if the
- * LED triggers are compiled in.
- */
-static const struct {
-       const char *name;
-       const char *trigger;
-} integrator_leds[] = {
-       { "integrator:core_module", "cpu0", },
-};
-
-static void cm_led_set(struct led_classdev *cdev,
-                             enum led_brightness b)
-{
-       if (b != LED_OFF)
-               cm_control(CM_CTRL_LED, CM_CTRL_LED);
-       else
-               cm_control(CM_CTRL_LED, 0);
-}
-
-static enum led_brightness cm_led_get(struct led_classdev *cdev)
-{
-       u32 reg = cm_get();
-
-       return (reg & CM_CTRL_LED) ? LED_FULL : LED_OFF;
-}
-
-static int __init integrator_leds_init(void)
-{
-       int i;
-
-       for (i = 0; i < ARRAY_SIZE(integrator_leds); i++) {
-               struct integrator_led *led;
-
-               led = kzalloc(sizeof(*led), GFP_KERNEL);
-               if (!led)
-                       break;
-
-               led->cdev.name = integrator_leds[i].name;
-               led->cdev.brightness_set = cm_led_set;
-               led->cdev.brightness_get = cm_led_get;
-               led->cdev.default_trigger = integrator_leds[i].trigger;
-
-               if (led_classdev_register(NULL, &led->cdev) < 0) {
-                       kfree(led);
-                       break;
-               }
-       }
-
-       return 0;
-}
-
-/*
- * Since we may have triggers on any subsystem, defer registration
- * until after subsystem_init.
- */
-fs_initcall(integrator_leds_init);
-#endif