hatch: Add support for 2 color LED

This CL adds board specific files/functions required to support the
battery LED. Similar to Coral or Octopus, the LEDs are controlled by
GPIO on/off instead of PWM.

BRANCH=none
BUG=b:122251649
TEST=make buildall. Verfied charging LED turns when external power is
connected.

Change-Id: Ic16d4192aaeba6e765e97743ded772d52ca47111
Signed-off-by: Scott Collyer <scollyer@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1387586
Commit-Ready: Scott Collyer <scollyer@chromium.org>
Tested-by: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Zack Yang <zack_yang@compal.corp-partner.google.com>

4 files changed, 85 insertions, 1 deletions

diff --git a/board/hatch/board.h b/board/hatch/board.h
index 35b3f7351b..bf9c21bf9b 100644
--- a/board/hatch/board.h
+++ b/board/hatch/board.h
@@ -17,6 +17,7 @@
 #define CONFIG_POWER_BUTTON
 #define CONFIG_KEYBOARD_BOARD_CONFIG
 #define CONFIG_KEYBOARD_PROTOCOL_8042
+#define CONFIG_LED_COMMON
 #define CONFIG_LOW_POWER_IDLE
 
 #define CONFIG_HOSTCMD_ESPI
diff --git a/board/hatch/build.mk b/board/hatch/build.mk
index dda2da02f0..733912454f 100644
--- a/board/hatch/build.mk
+++ b/board/hatch/build.mk
@@ -11,5 +11,5 @@ CHIP_FAMILY:=npcx7
 CHIP_VARIANT:=npcx7m6fc
 BASEBOARD:=hatch
 
-board-y=board.o
+board-y=board.o led.o
 board-$(CONFIG_BATTERY_SMART)+=battery.o
diff --git a/board/hatch/gpio.inc b/board/hatch/gpio.inc
index bffbecb830..d7f305fccd 100644
--- a/board/hatch/gpio.inc
+++ b/board/hatch/gpio.inc
@@ -52,6 +52,10 @@ GPIO(EN_USB_A_LOW_PWR_ODL,     PIN(9, 4), GPIO_OUT_LOW)
 
 /* Misc Signals */
 GPIO(EC_BATT_PRES_ODL,         PIN(E, 1), GPIO_INPUT)
+GPIO(LED_1_L,                  PIN(C, 4), GPIO_OUT_HIGH)        /* Yellow (hatch) */
+GPIO(LED_2_L,                  PIN(C, 3), GPIO_OUT_HIGH)        /* White (hatch) */
+GPIO(LED_3_L,                  PIN(C, 2), GPIO_OUT_HIGH)
+GPIO(LED_4_L,                  PIN(6, 0), GPIO_OUT_HIGH)
 
 /* I2C pins - Alternate function below configures I2C module on these pins */
 GPIO(I2C0_SCL,                 PIN(B, 5), GPIO_INPUT |
diff --git a/board/hatch/led.c b/board/hatch/led.c
new file mode 100644
index 0000000000..ccba8054cb
--- /dev/null
+++ b/board/hatch/led.c
@@ -0,0 +1,79 @@
+/* Copyright 2018 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 Hatch
+ */
+
+#include "ec_commands.h"
+#include "gpio.h"
+#include "led_common.h"
+#include "led_states.h"
+#include "chipset.h"
+
+#define LED_ON_LVL 0
+#define LED_OFF_LVL 1
+
+const int led_charge_lvl_1 = 5;
+
+const int led_charge_lvl_2 = 95;
+
+struct led_descriptor led_bat_state_table[LED_NUM_STATES][LED_NUM_PHASES] = {
+	[STATE_CHARGING_LVL_1]	     = {{EC_LED_COLOR_AMBER, LED_INDEFINITE} },
+	[STATE_CHARGING_LVL_2]	     = {{EC_LED_COLOR_AMBER, LED_INDEFINITE} },
+	[STATE_CHARGING_FULL_CHARGE] = {{EC_LED_COLOR_WHITE,  LED_INDEFINITE} },
+	[STATE_DISCHARGE_S0]	     = {{LED_OFF,  LED_INDEFINITE} },
+	[STATE_DISCHARGE_S3]	     = {{LED_OFF,  LED_INDEFINITE} },
+	[STATE_DISCHARGE_S5]         = {{LED_OFF,  LED_INDEFINITE} },
+	[STATE_BATTERY_ERROR]        = {{EC_LED_COLOR_AMBER,  1 * LED_ONE_SEC},
+					{LED_OFF,	    1 * LED_ONE_SEC} },
+	[STATE_FACTORY_TEST]         = {{EC_LED_COLOR_WHITE,   2 * LED_ONE_SEC},
+					{EC_LED_COLOR_AMBER, 2 * LED_ONE_SEC} },
+};
+
+const enum ec_led_id supported_led_ids[] = {
+	EC_LED_ID_BATTERY_LED
+};
+
+const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
+
+void led_set_color_battery(enum ec_led_colors color)
+{
+	switch (color) {
+	case EC_LED_COLOR_AMBER:
+		gpio_set_level(GPIO_LED_2_L, LED_OFF_LVL);
+		gpio_set_level(GPIO_LED_1_L, LED_ON_LVL);
+		break;
+	case EC_LED_COLOR_WHITE:
+		gpio_set_level(GPIO_LED_1_L, LED_OFF_LVL);
+		gpio_set_level(GPIO_LED_2_L, LED_ON_LVL);
+		break;
+	default: /* LED_OFF and other unsupported colors */
+		gpio_set_level(GPIO_LED_1_L, LED_OFF_LVL);
+		gpio_set_level(GPIO_LED_2_L, 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_BATTERY_LED) {
+		brightness_range[EC_LED_COLOR_AMBER] = 1;
+		brightness_range[EC_LED_COLOR_WHITE] = 1;
+	}
+}
+
+int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
+{
+	if (led_id == EC_LED_ID_BATTERY_LED) {
+		if (brightness[EC_LED_COLOR_AMBER] != 0)
+			led_set_color_battery(EC_LED_COLOR_AMBER);
+		else if (brightness[EC_LED_COLOR_WHITE] != 0)
+			led_set_color_battery(EC_LED_COLOR_WHITE);
+		else
+			led_set_color_battery(LED_OFF);
+	}
+
+	return EC_SUCCESS;
+}
+