Mancomb: Enable LEDs

Enable some basic power LED states for mancomb.  Solid green for S0,
flashing yellow for suspend, and flashing red for insufficient charger.

BRANCH=None
BUG=b:185508707
TEST=builds (boards have not SMT'd yet)

Signed-off-by: Diana Z <dzigterman@chromium.org>
Change-Id: I18369a8b0d51b73e3aa9883feef7441f5cae923c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2832695
Reviewed-by: Rob Barnes <robbarnes@google.com>
Commit-Queue: Rob Barnes <robbarnes@google.com>

6 files changed, 99 insertions, 12 deletions

diff --git a/baseboard/mancomb/base_gpio.inc b/baseboard/mancomb/base_gpio.inc
index 04ed32d3f8..999fafda83 100644
--- a/baseboard/mancomb/base_gpio.inc
+++ b/baseboard/mancomb/base_gpio.inc
@@ -74,8 +74,8 @@ ALTERNATE(			PIN_MASK(3, BIT(4)), 0,				MODULE_ADC, 0)		/* TEMP_AMBIENT_VR */
 
 /* LED Signals */
 GPIO(EC_DISABLE_DISP_BL,	PIN(A, 6), GPIO_OUT_HIGH)						/* Disable Display Backlight */
-ALTERNATE(/*EC_PWM_LED_CHRG_L*/	PIN_MASK(C, BIT(4)), 0, 			MODULE_PWM, 0)		/* Charging LED */
-ALTERNATE(/*EC_PWM_LED_FULL_L*/	PIN_MASK(8, BIT(0)), 0, 			MODULE_PWM, 0)		/* Full LED */
+ALTERNATE(			PIN_MASK(C, BIT(4)), 0,				MODULE_PWM, 0)		/* EC_PWM_LED1_L */
+ALTERNATE(			PIN_MASK(8, BIT(0)), 0,				MODULE_PWM, 0)		/* EC_PWM_LED2_L */
 
 /* Fan Signals */
 ALTERNATE(			PIN_MASK(C, BIT(3)), 0, 			MODULE_PWM, 0)		/* EC_FAN_PWM - Fan PWM */
diff --git a/baseboard/mancomb/baseboard.c b/baseboard/mancomb/baseboard.c
index 48aaa6d165..991e2acfd0 100644
--- a/baseboard/mancomb/baseboard.c
+++ b/baseboard/mancomb/baseboard.c
@@ -385,12 +385,12 @@ const struct pwm_t pwm_channels[] = {
 		.flags = PWM_CONFIG_OPEN_DRAIN,
 		.freq = 25000,
 	},
-	[PWM_CH_LED_CHRG] = {
+	[PWM_CH_LED1] = {
 		.channel = 2,
 		.flags = PWM_CONFIG_DSLEEP,
 		.freq = 100,
 	},
-	[PWM_CH_LED_FULL] = {
+	[PWM_CH_LED2] = {
 		.channel = 3,
 		.flags = PWM_CONFIG_DSLEEP,
 		.freq = 100,
diff --git a/baseboard/mancomb/baseboard.h b/baseboard/mancomb/baseboard.h
index 66703fb317..e7228527b5 100644
--- a/baseboard/mancomb/baseboard.h
+++ b/baseboard/mancomb/baseboard.h
@@ -286,8 +286,8 @@ enum temp_sensor_id {
 /* PWM Channels */
 enum pwm_channel {
 	PWM_CH_FAN = 0,
-	PWM_CH_LED_CHRG,
-	PWM_CH_LED_FULL,
+	PWM_CH_LED1,
+	PWM_CH_LED2,
 	PWM_CH_COUNT
 };
 
diff --git a/board/mancomb/board.h b/board/mancomb/board.h
index 9d651404e9..7cb1fdb0f1 100644
--- a/board/mancomb/board.h
+++ b/board/mancomb/board.h
@@ -11,11 +11,9 @@
 /* Baseboard features */
 #include "baseboard.h"
 
-/* Motion sensing drivers */
-
-/* Keyboard features */
-
-/* Sensors */
+/* LED */
+#define CONFIG_LED_COMMON
+#define CONFIG_LED_ONOFF_STATES
 
 /* USB Type C and USB PD defines */
 
diff --git a/board/mancomb/build.mk b/board/mancomb/build.mk
index 1630304826..ff7b62d146 100644
--- a/board/mancomb/build.mk
+++ b/board/mancomb/build.mk
@@ -8,4 +8,4 @@
 
 BASEBOARD:=mancomb
 
-board-y=board.o
+board-y=board.o led.o
diff --git a/board/mancomb/led.c b/board/mancomb/led.c
new file mode 100644
index 0000000000..a36b3a370d
--- /dev/null
+++ b/board/mancomb/led.c
@@ -0,0 +1,89 @@
+/* Copyright 2021 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Power and battery LED control for Mancomb
+ */
+
+#include "ec_commands.h"
+#include "gpio.h"
+#include "led_common.h"
+#include "led_onoff_states.h"
+#include "pwm.h"
+
+#define LED_OFF_LVL	1
+#define LED_ON_LVL	0
+
+#define CPRINTS(format, args...) cprints(CC_PWM, format, ## args)
+
+__override const struct led_descriptor
+		led_pwr_state_table[PWR_LED_NUM_STATES][LED_NUM_PHASES] = {
+	[PWR_LED_STATE_ON]           = {{EC_LED_COLOR_GREEN, LED_INDEFINITE} },
+	[PWR_LED_STATE_SUSPEND_AC]   = {{EC_LED_COLOR_YELLOW, 1 * LED_ONE_SEC},
+					{LED_OFF,	   1 * LED_ONE_SEC} },
+	[PWR_LED_STATE_OFF]           = {{LED_OFF, LED_INDEFINITE} },
+	[PWR_LED_STATE_OFF_LOW_POWER] = {{EC_LED_COLOR_RED, 1 * LED_ONE_SEC},
+					 {LED_OFF,	    1 * LED_ONE_SEC} },
+};
+
+const enum ec_led_id supported_led_ids[] = {
+	EC_LED_ID_POWER_LED,
+};
+
+const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
+
+__override void led_set_color_power(enum ec_led_colors color)
+{
+	switch (color) {
+	case EC_LED_COLOR_GREEN:
+		pwm_enable(PWM_CH_LED1, LED_OFF_LVL);
+		pwm_enable(PWM_CH_LED2, LED_ON_LVL);
+		break;
+	case EC_LED_COLOR_RED:
+		pwm_enable(PWM_CH_LED1, LED_ON_LVL);
+		pwm_enable(PWM_CH_LED2, LED_OFF_LVL);
+		break;
+	case EC_LED_COLOR_YELLOW:
+		pwm_enable(PWM_CH_LED1, LED_ON_LVL);
+		pwm_enable(PWM_CH_LED2, LED_ON_LVL);
+		break;
+	case LED_OFF:
+		pwm_enable(PWM_CH_LED1, LED_OFF_LVL);
+		pwm_enable(PWM_CH_LED2, LED_OFF_LVL);
+		break;
+	default: /* Unsupported colors */
+		CPRINTS("Unsupported LED color: %d", color);
+		pwm_enable(PWM_CH_LED1, LED_OFF_LVL);
+		pwm_enable(PWM_CH_LED2, LED_OFF_LVL);
+		break;
+	}
+}
+
+void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
+{
+	if (led_id == EC_LED_ID_POWER_LED) {
+		brightness_range[EC_LED_COLOR_RED] = 1;
+		brightness_range[EC_LED_COLOR_GREEN] = 1;
+		brightness_range[EC_LED_COLOR_YELLOW] = 1;
+	}
+}
+
+int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
+{
+	if (led_id == EC_LED_ID_POWER_LED) {
+		if (brightness[EC_LED_COLOR_RED] != 0)
+			led_set_color_power(EC_LED_COLOR_RED);
+		else if (brightness[EC_LED_COLOR_GREEN] != 0)
+			led_set_color_power(EC_LED_COLOR_GREEN);
+		else if (brightness[EC_LED_COLOR_YELLOW] != 0)
+			led_set_color_power(EC_LED_COLOR_YELLOW);
+		else
+			led_set_color_power(LED_OFF);
+	} else {
+		CPRINTS("Unsuppored LED set: %d", led_id);
+		return EC_ERROR_INVAL;
+	}
+
+	return EC_SUCCESS;
+}
+