buddy: Implement LED control.

Implement LED control for buddy.

BUG=none
BRANCH=none
TEST=check LED behavior is correct.

Change-Id: I40a22994fa0aeeae027b200ed162d4c450b2389c
Signed-off-by: Grover Yen <Grover_Yen@wistron.com>
Reviewed-on: https://chromium-review.googlesource.com/294006
Reviewed-by: Mohammed Habibulla <moch@google.com>

2 files changed, 7 insertions, 76 deletions

diff --git a/board/buddy/gpio.inc b/board/buddy/gpio.inc
index 68e10751c0..72aa2578d5 100644
--- a/board/buddy/gpio.inc
+++ b/board/buddy/gpio.inc
@@ -83,10 +83,7 @@ GPIO(PCH_SUSACK_L,         F, 3, GPIO_OUT_HIGH, NULL) /* Acknowledge PCH SUSWARN
 GPIO(PCH_RTCRST_L,         F, 6, GPIO_ODR_HIGH, NULL) /* Not supposed to be here */
 GPIO(PCH_SRTCRST_L,        F, 7, GPIO_ODR_HIGH, NULL) /* Not supposed to be here */
 
-GPIO(BAT_LED0_L,           D, 0, GPIO_ODR_HIGH, NULL) /* Battery charging LED - blue */
-GPIO(BAT_LED1_L,           N, 4, GPIO_ODR_HIGH, NULL) /* Battery charging LED - orange */
-GPIO(PWR_LED0_L,           D, 1, GPIO_ODR_HIGH, NULL) /* Power LED - blue */
-GPIO(PWR_LED1_L,           N, 6, GPIO_ODR_HIGH, NULL) /* Power LED - orange */
+GPIO(PWR_LED0_L,           N, 6, GPIO_ODR_HIGH, NULL) /* Power LED - blue */
 
 ALTERNATE(A, 0x03, 1,  MODULE_UART,    GPIO_PULL_UP)	/* UART0 */
 ALTERNATE(B, 0x04, 3,  MODULE_I2C,     0)		/* I2C0 SCL */
diff --git a/board/buddy/led.c b/board/buddy/led.c
index 199da7600c..227934d36a 100644
--- a/board/buddy/led.c
+++ b/board/buddy/led.c
@@ -21,37 +21,23 @@
 enum led_color {
 	LED_OFF = 0,
 	LED_BLUE,
-	LED_AMBER,
-	LED_PINK,
-
 	LED_COLOR_COUNT  /* Number of colors, not a color itself */
 };
 
 const enum ec_led_id supported_led_ids[] = {
-	EC_LED_ID_POWER_LED, EC_LED_ID_BATTERY_LED};
+	EC_LED_ID_POWER_LED};
 
 const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
 
 static int buddy_led_set_gpio(enum led_color color,
-			      enum gpio_signal gpio_led_blue_l,
-			      enum gpio_signal gpio_led_amber_l)
+			      enum gpio_signal gpio_led_blue_l)
 {
 	switch (color) {
 	case LED_OFF:
 		gpio_set_level(gpio_led_blue_l,  1);
-		gpio_set_level(gpio_led_amber_l, 1);
 		break;
 	case LED_BLUE:
 		gpio_set_level(gpio_led_blue_l,  0);
-		gpio_set_level(gpio_led_amber_l, 1);
-		break;
-	case LED_AMBER:
-		gpio_set_level(gpio_led_blue_l,  1);
-		gpio_set_level(gpio_led_amber_l, 0);
-		break;
-	case LED_PINK:
-		gpio_set_level(gpio_led_blue_l,  0);
-		gpio_set_level(gpio_led_amber_l, 0);
 		break;
 	default:
 		return EC_ERROR_UNKNOWN;
@@ -59,14 +45,9 @@ static int buddy_led_set_gpio(enum led_color color,
 	return EC_SUCCESS;
 }
 
-static int buddy_led_set_color_battery(enum led_color color)
-{
-	return buddy_led_set_gpio(color, GPIO_BAT_LED0_L, GPIO_BAT_LED1_L);
-}
-
 static int buddy_led_set_color_power(enum led_color color)
 {
-	return buddy_led_set_gpio(color, GPIO_PWR_LED0_L, GPIO_PWR_LED1_L);
+	return buddy_led_set_gpio(color, GPIO_PWR_LED0_L);
 }
 
 static int buddy_led_set_color(enum ec_led_id led_id, enum led_color color)
@@ -75,9 +56,6 @@ static int buddy_led_set_color(enum ec_led_id led_id, enum led_color color)
 
 	led_auto_control(led_id, 0);
 	switch (led_id) {
-	case EC_LED_ID_BATTERY_LED:
-		rv = buddy_led_set_color_battery(color);
-		break;
 	case EC_LED_ID_POWER_LED:
 		rv = buddy_led_set_color_power(color);
 		break;
@@ -89,13 +67,8 @@ static int buddy_led_set_color(enum ec_led_id led_id, enum led_color color)
 
 int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
 {
-	if (brightness[EC_LED_COLOR_BLUE] != 0 &&
-	    brightness[EC_LED_COLOR_YELLOW] != 0)
-		buddy_led_set_color(led_id, LED_PINK);
-	else if (brightness[EC_LED_COLOR_BLUE] != 0)
+	if (brightness[EC_LED_COLOR_BLUE] != 0)
 		buddy_led_set_color(led_id, LED_BLUE);
-	else if (brightness[EC_LED_COLOR_YELLOW] != 0)
-		buddy_led_set_color(led_id, LED_AMBER);
 	else
 		buddy_led_set_color(led_id, LED_OFF);
 
@@ -106,7 +79,6 @@ void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
 {
 	/* Ignoring led_id as both leds support the same colors */
 	brightness_range[EC_LED_COLOR_BLUE] = 1;
-	brightness_range[EC_LED_COLOR_YELLOW] = 1;
 }
 
 static void buddy_led_set_power(void)
@@ -117,7 +89,7 @@ static void buddy_led_set_power(void)
 	power_ticks++;
 
 	if (chipset_in_state(CHIPSET_STATE_SUSPEND)) {
-		/* Reset ticks if entering suspend so LED turns amber
+		/* Reset ticks if entering suspend so LED turns blue
 		 * as soon as possible. */
 		if (!previous_state_suspend)
 			power_ticks = 0;
@@ -125,7 +97,7 @@ static void buddy_led_set_power(void)
 		/* Blink once every four seconds. */
 		buddy_led_set_color_power(
 			(power_ticks % LED_TOTAL_TICKS < LED_ON_TICKS) ?
-			LED_AMBER : LED_OFF);
+			LED_BLUE : LED_OFF);
 
 		previous_state_suspend = 1;
 		return;
@@ -139,48 +111,10 @@ static void buddy_led_set_power(void)
 		buddy_led_set_color_power(LED_BLUE);
 }
 
-static void buddy_led_set_battery(void)
-{
-	static int battery_ticks;
-	uint32_t chflags = charge_get_flags();
-
-	battery_ticks++;
-
-	switch (charge_get_state()) {
-	case PWR_STATE_CHARGE:
-		buddy_led_set_color_battery(LED_AMBER);
-		break;
-	case PWR_STATE_CHARGE_NEAR_FULL:
-		buddy_led_set_color_battery(LED_BLUE);
-		break;
-	case PWR_STATE_DISCHARGE:
-		buddy_led_set_color_battery(LED_OFF);
-		break;
-	case PWR_STATE_ERROR:
-		buddy_led_set_color_battery(
-			(battery_ticks % LED_TOTAL_TICKS < LED_ON_TICKS) ?
-			LED_AMBER : LED_OFF);
-		break;
-	case PWR_STATE_IDLE: /* External power connected in IDLE. */
-		if (chflags & CHARGE_FLAG_FORCE_IDLE)
-			buddy_led_set_color_battery(
-				(battery_ticks & 0x4) ? LED_BLUE : LED_OFF);
-		else
-			buddy_led_set_color_battery(LED_BLUE);
-		break;
-	default:
-		/* Other states don't alter LED behavior */
-		break;
-	}
-}
-
 /* Called by hook task every 250mSec */
 static void led_tick(void)
 {
 	if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED))
 		buddy_led_set_power();
-
-	if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
-		buddy_led_set_battery();
 }
 DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT);