Support USB key repeat

diff --git a/include/grub/term.h b/include/grub/term.h
index 009258f6ec00eda7d02a5673cf74ea9af37e1625..9956398da0e83582519f31173ba56fa0fcc42d1f 100644 (file)
--- a/include/grub/term.h
+++ b/include/grub/term.h
@@ -490,6 +490,9 @@ grub_print_spaces (struct grub_term_output *term, int number_spaces)
 
 extern void (*EXPORT_VAR (grub_term_poll_usb)) (void);
 
+#define GRUB_TERM_REPEAT_PRE_INTERVAL 100
+#define GRUB_TERM_REPEAT_INTERVAL 50
+
 #endif /* ! ASM_FILE */
 
 #endif /* ! GRUB_TERM_HEADER */

diff --git a/term/usb_keyboard.c b/term/usb_keyboard.c
index 759b3eb7d8ef25245aefd97c22676de0cf0916ff..c3af1694b073c657de05921cbe244d6dd811e923 100644 (file)
--- a/term/usb_keyboard.c
+++ b/term/usb_keyboard.c
@@ -144,6 +144,8 @@ struct grub_usb_keyboard_data
   grub_usb_transfer_t transfer;
   grub_uint8_t report[8];
   int dead;
+  int last_key;
+  grub_uint64_t repeat_time;
 };
 
 static struct grub_term_input grub_usb_keyboards[16];
@@ -368,7 +370,16 @@ grub_usb_keyboard_checkkey (struct grub_term_input *term)
   err = grub_usb_check_transfer (termdata->transfer, &actual);
 
   if (err == GRUB_USB_ERR_WAIT)
-    return -1;
+    {
+      if (termdata->last_key != -1
+         && grub_get_time_ms () > termdata->repeat_time)
+       {
+         termdata->key = termdata->last_key;
+         termdata->repeat_time = grub_get_time_ms ()
+           + GRUB_TERM_REPEAT_INTERVAL;
+       }
+      return termdata->key;
+    }
 
   grub_memcpy (data, termdata->report, sizeof (data));
 
@@ -382,6 +393,7 @@ grub_usb_keyboard_checkkey (struct grub_term_input *term)
       termdata->dead = 1;
     }
 
+  termdata->last_key = -1;
 
   grub_dprintf ("usb_keyboard",
                "err = %d, actual = %d report: 0x%02x 0x%02x 0x%02x 0x%02x"
@@ -419,9 +431,13 @@ grub_usb_keyboard_checkkey (struct grub_term_input *term)
   if (data[2] > ARRAY_SIZE (usb_to_at_map) || usb_to_at_map[data[2]] == 0)
     grub_printf ("Unknown key 0x%02x detected\n", data[2]);
   else
-    termdata->key = grub_term_map_key (usb_to_at_map[data[2]],
-                                      interpret_status (data[0])
-                                      | termdata->mods);
+    {
+      termdata->last_key = termdata->key
+       = grub_term_map_key (usb_to_at_map[data[2]],
+                            interpret_status (data[0]) | termdata->mods);
+      termdata->repeat_time = grub_get_time_ms ()
+       + GRUB_TERM_REPEAT_PRE_INTERVAL;
+    }
 
   grub_errno = GRUB_ERR_NONE;