Add "lightbar demo" mode for executive bikeshedding

I keep getting asked to build an EC image to manually control the lightbar
patterns so that the Powers That Be can look at it. This change just makes
it possible to turn that mode on and off for yourself. You'll need a root
shell or the EC console to do it, though.

BUG=chrome-os-partner:8039
BRANCH=link
TEST=manual

From the EC console, type

  lightbar demo 1

OR from the root shell run

  ectool lightbar demo 1

After that, these keys should change the lightbar appearance (transitions
may be slow and subtle - that's intended):

  UP = battery is more fully charged
  DOWN = battery is less fully charged
  RIGHT = battery is charging
  LEFT = battery is discharging
  BRIGHT = increase lightbar brightness
  DIM = decrase lightbar brightness

Note that this does not interfere with the normal function of any keys. It
only adds some additional EC behavior.

Change-Id: Ia1a9855188244d74b670f9dbfdf60e3ac0343460
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/30899

2 files changed, 17 insertions, 0 deletions

diff --git a/util/ectool.c b/util/ectool.c
index 81b9f2a133..0b6fa089e4 100644
--- a/util/ectool.c
+++ b/util/ectool.c
@@ -1044,6 +1044,8 @@ static const struct {
 	  sizeof(((struct ec_params_lightbar_cmd *)0)->out.rgb) },
 	{ sizeof(((struct ec_params_lightbar_cmd *)0)->in.get_seq),
 	  sizeof(((struct ec_params_lightbar_cmd *)0)->out.get_seq) },
+	{ sizeof(((struct ec_params_lightbar_cmd *)0)->in.demo),
+	  sizeof(((struct ec_params_lightbar_cmd *)0)->out.demo) },
 };
 
 static int lb_help(const char *cmd)
@@ -1059,6 +1061,7 @@ static int lb_help(const char *cmd)
 	printf("  %s CTRL REG VAL          - set LED controller regs\n", cmd);
 	printf("  %s LED RED GREEN BLUE    - set color manually"
 		 " (LED=4 for all)\n", cmd);
+	printf("  %s demo 0|1              - turn demo mode on & off\n", cmd);
 	return 0;
 }
 
@@ -1131,6 +1134,18 @@ static int cmd_lightbar(int argc, char **argv)
 		return lb_do_cmd(LIGHTBAR_CMD_BRIGHTNESS, &param);
 	}
 
+	if (argc == 3 && !strcasecmp(argv[1], "demo")) {
+		if (!strcasecmp(argv[2], "on") || argv[2][0] == '1')
+			param.in.demo.num = 1;
+		else if (!strcasecmp(argv[2], "off") || argv[2][0] == '0')
+			param.in.demo.num = 0;
+		else {
+			fprintf(stderr, "Invalid arg\n");
+			return -1;
+		}
+		return lb_do_cmd(LIGHTBAR_CMD_DEMO, &param);
+	}
+
 	if (argc >= 2 && !strcasecmp(argv[1], "seq")) {
 		char *e;
 		uint8_t num;
diff --git a/util/lbplay.c b/util/lbplay.c
index 9121623f91..9acabaddfb 100644
--- a/util/lbplay.c
+++ b/util/lbplay.c
@@ -40,6 +40,8 @@ static const struct {
 	  sizeof(((struct ec_params_lightbar_cmd *)0)->out.rgb) },
 	{ sizeof(((struct ec_params_lightbar_cmd *)0)->in.get_seq),
 	  sizeof(((struct ec_params_lightbar_cmd *)0)->out.get_seq) },
+	{ sizeof(((struct ec_params_lightbar_cmd *)0)->in.demo),
+	  sizeof(((struct ec_params_lightbar_cmd *)0)->out.demo) },
 };