Add dummy display HAL

Change-Id: I6fa9b2f13594d8097a1d3051e8948e4daa9150bf
Signed-off-by: Youngjae Cho <y0.cho@samsung.com>

diff --git a/hw/display/display.c b/hw/display/display.c
index 8869ec962d29bd396b727924bc7f47e786ad4ed7..5fd0e68a31f2568d316f6f9e636b81bbf93fd000 100644 (file)
--- a/hw/display/display.c
+++ b/hw/display/display.c
@@ -17,24 +17,87 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <errno.h>
 #include <hw/display.h>
 
+#define DUMMY_MAX_BRIGHTNESS 100
+
+static enum display_state dummy_state;
+static int dummy_brightness;
+
+static int dummy_display_get_max_brightness(int *val)
+{
+       if (!val)
+               return -EINVAL;
+
+       *val = DUMMY_MAX_BRIGHTNESS;
+       return 0;
+}
+
+static int dummy_display_get_brightness(int *brightness)
+{
+       if (!brightness)
+               return -EINVAL;
+
+       *brightness = dummy_brightness;
+       return 0;
+}
+
+static int dummy_display_set_brightness(int brightness)
+{
+       if (brightness < 0 || brightness > DUMMY_MAX_BRIGHTNESS)
+               return -EINVAL;
+
+       dummy_brightness = brightness;
+       return 0;
+}
+
+static int dummy_display_get_state(enum display_state *state)
+{
+       *state = dummy_state;
+       return 0;
+}
+
+static int dummy_display_set_state(enum display_state state)
+{
+       dummy_state = state;
+       return 0;
+}
+
 static int display_open(struct hw_info *info,
                const char *id, struct hw_common **common)
 {
+       struct display_device *display_dev;
+
        if (!info || !common)
                return -EINVAL;
 
-       *common = NULL;
+       display_dev = calloc(1, sizeof(struct display_device));
+       if (!display_dev)
+               return -ENOMEM;
+
+       dummy_state = DISPLAY_ON;
+       dummy_brightness = 100;
+
+       display_dev->common.info = info;
+       display_dev->get_max_brightness = dummy_display_get_max_brightness;
+       display_dev->get_brightness = dummy_display_get_brightness;
+       display_dev->set_brightness = dummy_display_set_brightness;
+
+       display_dev->get_state = dummy_display_get_state;
+       display_dev->set_state = dummy_display_set_state;
+
+       *common = (struct hw_common *)display_dev;
        return 0;
 }
 
 static int display_close(struct hw_common *common)
 {
-       if (common) /* we use NULL display_dev */
+       if (!common)
                return -EINVAL;
 
+       free(common);
        return 0;
 }