Keyboard wakeup.

The final piece links the keyboard press and x86_power module.

BUG=chrome-os-partner:8523
TEST=on the link board.
wait for 15 minutes to make host suspend. touch any key to wake up host.

Change-Id: Ie6ae840ae546731daea48ab457fdc056feb5a685

1 files changed, 19 insertions, 0 deletions

diff --git a/common/keyboard.c b/common/keyboard.c
index 54386ac2ec..78864755cb 100644
--- a/common/keyboard.c
+++ b/common/keyboard.c
@@ -10,6 +10,8 @@
 #include "console.h"
 #include "keyboard.h"
 #include "i8042.h"
+#include "lpc.h"
+#include "lpc_commands.h"
 #include "registers.h"
 #include "timer.h"
 #include "uart.h"
@@ -214,6 +216,19 @@ static void clean_underlying_buffer(void) {
 }
 
 
+/* TODO: Move this implementation to platform-dependent files.
+ *       We don't do it now because not every board implement x86_power.c
+ *         bds: no CONFIG_LPC and no CONFIG_TASK_X86POWER
+ *         daisy(variants): no CONFIG_LPC and no CONFIG_TASK_X86POWER
+ *       crosbug.com/p/8523
+ */
+static void keyboard_wakeup(void) {
+#ifdef CONFIG_LPC
+  lpc_set_host_events(EC_LPC_HOST_EVENT_MASK(EC_LPC_HOST_EVENT_KEY_PRESSED));
+#endif
+}
+
+
 void keyboard_state_changed(int row, int col, int is_pressed) {
   uint8_t scan_code[MAX_SCAN_CODE_LEN];
   int32_t len;
@@ -234,6 +249,10 @@ void keyboard_state_changed(int row, int col, int is_pressed) {
      *        assertion in the debug stage. */
     ASSERT(ret == EC_SUCCESS);
   }
+
+  if (is_pressed) {
+    keyboard_wakeup();
+  }
 }