base_detect: Expose console command to force state.

In an effort to test wake sources on any given platform, this
CL exposes console command to set the base state. This console
command can then be invoked by autottests from the uart interface.
We have two implementations for managing base status.  One is interrupt
driven while the other is a polling via a task.

Boards current implementations then are:

  interrupts: lux, soraka, cheza
  polling task: nocturne, zoombini

For forcing base connect and disconnect,

  interrupts: Disable interrupts and set forced base state.
  polling task: Stop periodic task and set forced base state.

On reset,

  interrupts: Schedule deferred task immediately and enable interrupts.
  polling task: Clear forced base state and begin rescheduling periodic
                task.

Signed-off-by: RaviChandra Sadineni <ravisadineni@google.com>
BRANCH=poppy,nocturne
BUG=chromium:820668, b:37223093
TEST=Tested on lux, soraka and nocturne
             basestate  a : attaches the lid, reflected in ui.
             basestate  d : detaches the lid, reflected in ui.
             basestate  r : resets to the correct state.
     Wakes the device up on lux and nocturne and soraka.

Change-Id: Iab698e103a50b8d22bf216a6f816998cb158e38a
Reviewed-on: https://chromium-review.googlesource.com/1184172
Commit-Ready: Ravi Chandra Sadineni <ravisadineni@chromium.org>
Tested-by: Ravi Chandra Sadineni <ravisadineni@chromium.org>
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Todd Broch <tbroch@chromium.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/board/poppy/base_detect_poppy.c b/board/poppy/base_detect_poppy.c
index 83f395f43c..a049b41acd 100644
--- a/board/poppy/base_detect_poppy.c
+++ b/board/poppy/base_detect_poppy.c
@@ -238,3 +238,19 @@ static void base_init(void)
 		base_enable();
 }
 DECLARE_HOOK(HOOK_INIT, base_init, HOOK_PRIO_DEFAULT+1);
+
+void base_force_state(int state)
+{
+	if (state == 1) {
+		gpio_disable_interrupt(GPIO_BASE_DET_A);
+		base_detect_change(BASE_CONNECTED);
+		CPRINTS("BD forced connected");
+	} else if (state == 0) {
+		gpio_disable_interrupt(GPIO_BASE_DET_A);
+		base_detect_change(BASE_DISCONNECTED);
+		CPRINTS("BD forced disconnected");
+	} else {
+		base_enable();
+		CPRINTS("BD forced reset");
+	}
+}