stdio: Introduce a new helper stdio_file_to_flags()

Let's deduplicate existing copies by splitting off to a new helper.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/common/stdio.c b/common/stdio.c
index 61fc087..d4acc52 100644 (file)
--- a/common/stdio.c
+++ b/common/stdio.c
@@ -28,6 +28,19 @@ static struct stdio_dev devs;
 struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL };
 char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
 
+int stdio_file_to_flags(const int file)
+{
+       switch (file) {
+       case stdin:
+               return DEV_FLAGS_INPUT;
+       case stdout:
+       case stderr:
+               return DEV_FLAGS_OUTPUT;
+       default:
+               return -EINVAL;
+       }
+}
+
 #if CONFIG_IS_ENABLED(SYS_DEVICE_NULLDEV)
 static void nulldev_putc(struct stdio_dev *dev, const char c)
 {

diff --git a/include/stdio_dev.h b/include/stdio_dev.h
index 109a68d..8fb9a12 100644 (file)
--- a/include/stdio_dev.h
+++ b/include/stdio_dev.h
@@ -18,6 +18,8 @@
 #define DEV_FLAGS_OUTPUT 0x00000002    /* Device can be used as output console */
 #define DEV_FLAGS_DM     0x00000004    /* Device priv is a struct udevice * */
 
+int stdio_file_to_flags(const int file);
+
 /* Device information */
 struct stdio_dev {
        int     flags;                  /* Device flags: input/output/system    */