Backlight initial import

2 files changed, 78 insertions, 0 deletions

diff --git a/Android.mk b/Android.mk
new file mode 100644
index 0000000..8a5cf53
--- a/dev/null
+++ b/Android.mk
@@ -0,0 +1,8 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := lights.c
+LOCAL_PRELINK_MODULE := false
+LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
+LOCAL_SHARED_LIBRARIES := liblog
+LOCAL_MODULE := lights.amlogic
+include $(BUILD_SHARED_LIBRARY)
\ No newline at end of file
diff --git a/lights.c b/lights.c
new file mode 100644
index 0000000..522bf61
--- a/dev/null
+++ b/lights.c
@@ -0,0 +1,70 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <hardware/lights.h>
+#include <hardware/hardware.h>
+
+
+#define BACKLIGHT "/sys/class/backlight/aml-bl/brightness"
+static int set_light_backlight(struct light_device_t* dev,
+        struct light_state_t const* state)
+{
+    int nwr, ret, fd;
+    char value[20];
+    int light_level;
+    light_level = 15 - (state->color&0xff)/20;
+    
+    fd = open(BACKLIGHT, O_RDWR);
+    nwr = sprintf(value, "%d\n", light_level);
+    ret = write(fd, value, nwr);
+    close(fd);
+
+    return ret;
+}
+
+static int open_lights(const struct hw_module_t* module, char const* name,
+        struct hw_device_t** device)
+{
+    int res = -EINVAL;
+    int (*set_light)(struct light_device_t* dev,
+            struct light_state_t const* state);
+
+    if (strcmp(LIGHT_ID_BACKLIGHT, name) == 0) {
+    struct light_device_t *dev = malloc(sizeof(struct light_device_t));
+    if (!dev) {
+        return res;
+    }
+                
+    set_light = set_light_backlight;
+    
+    memset(dev, 0, sizeof(*dev));
+    dev->common.tag = HARDWARE_DEVICE_TAG;
+    dev->common.version = 0;
+    dev->common.module = (struct hw_module_t*)module;
+    dev->common.close = NULL;
+    dev->set_light = set_light;
+
+    *device = (struct hw_device_t*)dev;
+    res = 0;
+    }
+    return res;
+}
+
+
+
+
+static struct hw_module_methods_t lights_module_methods = {
+    .open =  open_lights,
+};
+const struct hw_module_t HAL_MODULE_INFO_SYM = {
+    .tag = HARDWARE_MODULE_TAG,
+    .version_major = 1,
+    .version_minor = 0,
+    .id = LIGHTS_HARDWARE_MODULE_ID,
+    .name = "lights Module",
+    .author = "",
+    .methods = &lights_module_methods,
+};
+
+