meep: Add Power LED behavior

Add Power LED behavior to meet spec:
System is ON(S0):LED solid ON White.
System is Suspend/S0ix: LED blink White(1 sec on, 1 sec off).
System is OFF: LED OFF.

BUG=none
BRANCH=none
TEST=manual
Check Power LED solid on White when system is ON(S0).
Check Power LED blink White(1 sec on, 1 sec off)
when system is Suspend/S0ix.
Check Power LED off when system is OFF.

Change-Id: I0e53a51446735dee0296e9f2c5eb3ceb84313720
Signed-off-by: Zick Wei <zick.wei@quanta.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/1196642
Commit-Ready: Devin Lu <Devin.Lu@quantatw.com>
Tested-by: Devin Lu <Devin.Lu@quantatw.com>
Reviewed-by: Diana Z <dzigterman@chromium.org>

3 files changed, 44 insertions, 10 deletions

diff --git a/board/meep/board.h b/board/meep/board.h
index b11019c086..341c053b52 100644
--- a/board/meep/board.h
+++ b/board/meep/board.h
@@ -28,6 +28,7 @@
 #define CONFIG_CMD_ACCEL_INFO
 
 #define CONFIG_LED_COMMON
+#define OCTOPUS_POWER_LED
 
 /* Sensors */
 /* TODO(b/111842131): confirm lid accelerometer matches yorp */
diff --git a/board/meep/gpio.inc b/board/meep/gpio.inc
index d48fa9c481..b05068d011 100644
--- a/board/meep/gpio.inc
+++ b/board/meep/gpio.inc
@@ -139,7 +139,7 @@ GPIO(USB2_OTG_ID,	 PIN(8, 3), GPIO_ODR_LOW)	/* USB_OTG */
 /* LED */
 GPIO(BAT_LED_AMBER_L,	 PIN(C, 3), GPIO_OUT_HIGH)	/* LED_1_L */
 GPIO(BAT_LED_WHITE_L,	 PIN(C, 4), GPIO_OUT_HIGH)	/* LED_2_L */
-GPIO(LED_3_L,		 PIN(D, 7), GPIO_OUT_HIGH)
+GPIO(PWR_LED_WHITE_L,	 PIN(D, 7), GPIO_OUT_HIGH)	/* LED_3_L */
 
 /* Keyboard Backlight */
 GPIO(KB_BL_PWR_EN,	 PIN(6, 2), GPIO_OUT_LOW)
diff --git a/board/meep/led.c b/board/meep/led.c
index 1b2f58c7bd..ccf2f2f045 100644
--- a/board/meep/led.c
+++ b/board/meep/led.c
@@ -34,10 +34,32 @@ const struct led_descriptor
 					{LED_OFF, 1 * LED_ONE_SEC} },
 };
 
-const enum ec_led_id supported_led_ids[] = { EC_LED_ID_BATTERY_LED };
+const struct led_descriptor
+		led_pwr_state_table[PWR_LED_NUM_STATES][LED_NUM_PHASES] = {
+	[PWR_LED_STATE_ON]           = {{EC_LED_COLOR_WHITE, LED_INDEFINITE} },
+	[PWR_LED_STATE_SUSPEND_AC]   = {{EC_LED_COLOR_WHITE, 1 * LED_ONE_SEC},
+					{LED_OFF,	   1 * LED_ONE_SEC} },
+	[PWR_LED_STATE_SUSPEND_NO_AC] = {{EC_LED_COLOR_WHITE, 1 * LED_ONE_SEC},
+					{LED_OFF,	   1 * LED_ONE_SEC} },
+	[PWR_LED_STATE_OFF]           = {{LED_OFF, LED_INDEFINITE} },
+};
+
+const enum ec_led_id supported_led_ids[] = {
+	EC_LED_ID_BATTERY_LED,
+	EC_LED_ID_POWER_LED
+};
 
 const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
 
+void led_set_color_power(enum ec_led_colors color)
+{
+	if (color == EC_LED_COLOR_WHITE)
+		gpio_set_level(GPIO_PWR_LED_WHITE_L, LED_ON_LVL);
+	else
+		/* LED_OFF and unsupported colors */
+		gpio_set_level(GPIO_PWR_LED_WHITE_L, LED_OFF_LVL);
+}
+
 void led_set_color_battery(enum ec_led_colors color)
 {
 	switch (color) {
@@ -58,18 +80,29 @@ void led_set_color_battery(enum ec_led_colors color)
 
 void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
 {
-	brightness_range[EC_LED_COLOR_WHITE] = 1;
-	brightness_range[EC_LED_COLOR_AMBER] = 1;
+	if (led_id == EC_LED_ID_BATTERY_LED) {
+		brightness_range[EC_LED_COLOR_WHITE] = 1;
+		brightness_range[EC_LED_COLOR_AMBER] = 1;
+	} else if (led_id == EC_LED_ID_POWER_LED) {
+		brightness_range[EC_LED_COLOR_WHITE] = 1;
+	}
 }
 
 int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
 {
-	if (brightness[EC_LED_COLOR_WHITE] != 0)
-		led_set_color_battery(EC_LED_COLOR_WHITE);
-	else if (brightness[EC_LED_COLOR_AMBER] != 0)
-		led_set_color_battery(EC_LED_COLOR_AMBER);
-	else
-		led_set_color_battery(LED_OFF);
+	if (led_id == EC_LED_ID_BATTERY_LED) {
+		if (brightness[EC_LED_COLOR_WHITE] != 0)
+			led_set_color_battery(EC_LED_COLOR_WHITE);
+		else if (brightness[EC_LED_COLOR_AMBER] != 0)
+			led_set_color_battery(EC_LED_COLOR_AMBER);
+		else
+			led_set_color_battery(LED_OFF);
+	} else if (led_id == EC_LED_ID_POWER_LED) {
+		if (brightness[EC_LED_COLOR_WHITE] != 0)
+			led_set_color_power(EC_LED_COLOR_WHITE);
+		else
+			led_set_color_power(LED_OFF);
+	}
 
 	return EC_SUCCESS;
 }