ARM: plat-versatile: convert LEDs to platform device

[deliverable/linux.git] / arch / arm / plat-versatile / leds.c

diff --git a/arch/arm/plat-versatile/leds.c b/arch/arm/plat-versatile/leds.c
index 2018f307f32eb4338c49324a173da8883faca996..80553022d661fcbd09e1a0048472deb5486b70ef 100644 (file)
--- a/arch/arm/plat-versatile/leds.c
+++ b/arch/arm/plat-versatile/leds.c
@@ -7,22 +7,14 @@
  */
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/module.h>
 #include <linux/io.h>
 #include <linux/slab.h>
 #include <linux/leds.h>
-
-#include <mach/hardware.h>
-#include <mach/platform.h>
-
-#ifdef VERSATILE_SYS_BASE
-#define LEDREG (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LED_OFFSET)
-#endif
-
-#ifdef REALVIEW_SYS_BASE
-#define LEDREG (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_LED_OFFSET)
-#endif
+#include <linux/platform_device.h>
 
 struct versatile_led {
+       void __iomem            *base;
        struct led_classdev     cdev;
        u8                      mask;
 };
@@ -50,30 +42,37 @@ static void versatile_led_set(struct led_classdev *cdev,
 {
        struct versatile_led *led = container_of(cdev,
                                                 struct versatile_led, cdev);
-       u32 reg = readl(LEDREG);
+       u32 reg = readl(led->base);
 
        if (b != LED_OFF)
                reg |= led->mask;
        else
                reg &= ~led->mask;
-       writel(reg, LEDREG);
+       writel(reg, led->base);
 }
 
 static enum led_brightness versatile_led_get(struct led_classdev *cdev)
 {
        struct versatile_led *led = container_of(cdev,
                                                 struct versatile_led, cdev);
-       u32 reg = readl(LEDREG);
+       u32 reg = readl(led->base);
 
        return (reg & led->mask) ? LED_FULL : LED_OFF;
 }
 
-static int __init versatile_leds_init(void)
+static int versatile_leds_probe(struct platform_device *dev)
 {
        int i;
+       struct resource *res;
+       void __iomem *base;
+
+       res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+       base = devm_ioremap_resource(&dev->dev, res);
+       if (IS_ERR(base))
+               return PTR_ERR(base);
 
        /* All off */
-       writel(0, LEDREG);
+       writel(0, base);
        for (i = 0; i < ARRAY_SIZE(versatile_leds); i++) {
                struct versatile_led *led;
 
@@ -81,6 +80,7 @@ static int __init versatile_leds_init(void)
                if (!led)
                        break;
 
+               led->base = base;
                led->cdev.name = versatile_leds[i].name;
                led->cdev.brightness_set = versatile_led_set;
                led->cdev.brightness_get = versatile_led_get;
@@ -96,8 +96,15 @@ static int __init versatile_leds_init(void)
        return 0;
 }
 
-/*
- * Since we may have triggers on any subsystem, defer registration
- * until after subsystem_init.
- */
-fs_initcall(versatile_leds_init);
+static struct platform_driver versatile_leds_driver = {
+       .driver = {
+               .name   = "versatile-leds",
+       },
+       .probe = versatile_leds_probe,
+};
+
+module_platform_driver(versatile_leds_driver);
+
+MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
+MODULE_DESCRIPTION("ARM Versatile LED driver");
+MODULE_LICENSE("GPL v2");