dalboz: add power led support

dalboz has a power led.

BRANCH=none
BUG=none
TEST=S0: on
     S3: blink
     S5: off

Signed-off-by: Lu Zhang <lu.zhang@bitland.corp-partner.google.com>
Change-Id: Ic63f18cdf3ce697d2a1b612629c0c6067932e1d9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2147767
Reviewed-by: Edward Hill <ecgh@chromium.org>

3 files changed, 48 insertions, 10 deletions

diff --git a/board/dalboz/board.h b/board/dalboz/board.h
index 38d409fc5b..2a9db57ccc 100644
--- a/board/dalboz/board.h
+++ b/board/dalboz/board.h
@@ -22,6 +22,9 @@
 
 #define CONFIG_MKBP_USE_GPIO
 
+/* Power  LEDs */
+#define CONFIG_LED_POWER_LED
+
 /* Motion sensing drivers */
 #define CONFIG_ACCELGYRO_LSM6DSM
 #define CONFIG_ACCEL_LSM6DSM_INT_EVENT \
diff --git a/board/dalboz/gpio.inc b/board/dalboz/gpio.inc
index d10d151f74..f55565866e 100644
--- a/board/dalboz/gpio.inc
+++ b/board/dalboz/gpio.inc
@@ -52,6 +52,7 @@ UNIMPLEMENTED(PCH_SMI_L)
 
 GPIO(LED_FULL_L,		PIN(6, 0), GPIO_OUT_HIGH)
 GPIO(LED_CHRG_L,		PIN(C, 0), GPIO_OUT_HIGH)
+GPIO(LED3_PWM,			PIN(C, 3), GPIO_OUT_HIGH)
 
 /*
  * Dalboz has 2 DB options, with different IO expanders. IOEX_C1_NCT3807 is the
@@ -120,7 +121,6 @@ ALTERNATE(PIN_MASK(B, BIT(2) | BIT(3)), 0, MODULE_I2C, 0)			/* I2C7 */
 
 ALTERNATE(PIN_MASK(4, BIT(2) | BIT(3)), 0, MODULE_ADC, 0)			/* ADC2, ADC3 Temp Sensors */
 
-ALTERNATE(PIN_MASK(C, BIT(3)), 0, MODULE_PWM, 0)				/* PWM0 LED */
 ALTERNATE(PIN_MASK(8, BIT(0)), 0, MODULE_PWM, 0)				/* PWM3 KB Backlight */
 
 ALTERNATE(PIN_MASK(3, 0x03), 0, MODULE_KEYBOARD_SCAN, GPIO_INPUT)		/* KSI_00-01 */
diff --git a/board/dalboz/led.c b/board/dalboz/led.c
index 9f3f7492c0..6ef9c26e8c 100644
--- a/board/dalboz/led.c
+++ b/board/dalboz/led.c
@@ -27,12 +27,36 @@ struct led_descriptor led_bat_state_table[LED_NUM_STATES][LED_NUM_PHASES] = {
 					{EC_LED_COLOR_RED, 2 * LED_ONE_SEC} },
 	[STATE_FACTORY_TEST]         = {{EC_LED_COLOR_GREEN,  LED_INDEFINITE} },
 };
+
 BUILD_ASSERT(ARRAY_SIZE(led_bat_state_table) == LED_NUM_STATES);
 
-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, 3 * LED_ONE_SEC},
+				{LED_OFF,          0.5 * LED_ONE_SEC} },
+	[PWR_LED_STATE_SUSPEND_NO_AC] = {{LED_OFF, LED_INDEFINITE} },
+	[PWR_LED_STATE_OFF]           = {{LED_OFF, LED_INDEFINITE} },
+};
+
+BUILD_ASSERT(ARRAY_SIZE(led_pwr_state_table) == PWR_LED_NUM_STATES);
+
+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_LED3_PWM, LED_ON_LVL);
+	else
+		/* LED_OFF and unsupported colors */
+		gpio_set_level(GPIO_LED3_PWM, LED_OFF_LVL);
+}
+
 void led_set_color_battery(enum ec_led_colors color)
 {
 	switch (color) {
@@ -53,18 +77,29 @@ 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_GREEN] = 1;
-	brightness_range[EC_LED_COLOR_RED] = 1;
+	if (led_id == EC_LED_ID_BATTERY_LED) {
+		brightness_range[EC_LED_COLOR_GREEN] = 1;
+		brightness_range[EC_LED_COLOR_RED] = 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_GREEN] != 0)
-		led_set_color_battery(EC_LED_COLOR_GREEN);
-	else if (brightness[EC_LED_COLOR_RED] != 0)
-		led_set_color_battery(EC_LED_COLOR_RED);
-	else
-		led_set_color_battery(LED_OFF);
+	if (led_id == EC_LED_ID_BATTERY_LED) {
+		if (brightness[EC_LED_COLOR_GREEN] != 0)
+			led_set_color_battery(EC_LED_COLOR_GREEN);
+		else if (brightness[EC_LED_COLOR_RED] != 0)
+			led_set_color_battery(EC_LED_COLOR_RED);
+		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;
 }