Nami: Derive board files from Nautilus

BUG=b:70157960
BRANCH=none
TEST=make buildall

Change-Id: Iecbca185a3575818892f66f988ad36b0b175f317
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>

1 files changed, 87 insertions, 186 deletions

diff --git a/board/nami/led.c b/board/nami/led.c
index 9b6942d241..6b92ab6992 100644
--- a/board/nami/led.c
+++ b/board/nami/led.c
@@ -2,231 +2,132 @@
  * 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 Fizz
+ * Power and battery LED control.
  */
 
+#include "battery.h"
+#include "charge_manager.h"
+#include "charge_state.h"
 #include "chipset.h"
-#include "console.h"
 #include "ec_commands.h"
 #include "gpio.h"
 #include "hooks.h"
+#include "host_command.h"
 #include "led_common.h"
-#include "pwm.h"
-#include "timer.h"
+#include "system.h"
 #include "util.h"
 
-const enum ec_led_id supported_led_ids[] = {EC_LED_ID_POWER_LED};
+#define BAT_LED_ON 1
+#define BAT_LED_OFF 0
+
+#define LED_TOTAL_TICKS 16
+#define LED_ON_TICKS 8
+
+const enum ec_led_id supported_led_ids[] = {
+	EC_LED_ID_POWER_LED,
+	EC_LED_ID_BATTERY_LED};
+
 const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
 
 enum led_color {
 	LED_OFF = 0,
 	LED_RED,
 	LED_GREEN,
-	LED_AMBER,
+	LED_BLUE,
 
 	/* Number of colors, not a color itself */
 	LED_COLOR_COUNT
 };
 
-static int set_color_power(enum led_color color, int duty)
-{
-	int green = 0;
-	int red = 0;
-
-	if (duty < 0 || 100 < duty)
-		return EC_ERROR_UNKNOWN;
-
-	switch (color) {
-	case LED_OFF:
-		break;
-	case LED_GREEN:
-		green = 1;
-		break;
-	case LED_RED:
-		red = 1;
-		break;
-	case LED_AMBER:
-		green = 1;
-		red = 1;
-		break;
-	default:
-		return EC_ERROR_UNKNOWN;
-	}
-
-	if (red)
-		pwm_set_duty(PWM_CH_LED_RED, duty);
-	else
-		pwm_set_duty(PWM_CH_LED_RED, 0);
-
-	if (green)
-		pwm_set_duty(PWM_CH_LED_GREEN, duty);
-	else
-		pwm_set_duty(PWM_CH_LED_GREEN, 0);
-
-	return EC_SUCCESS;
-}
-
-static int set_color(enum ec_led_id id, enum led_color color, int duty)
+/**
+ * Set LED color
+ *
+ * @param color         Enumerated color value
+ */
+static void set_color(enum led_color color)
 {
-	switch (id) {
-	case EC_LED_ID_POWER_LED:
-		return set_color_power(color, duty);
-	default:
-		return EC_ERROR_UNKNOWN;
-	}
+	gpio_set_level(GPIO_POWER_LED, !(color == LED_BLUE));
+	gpio_set_level(GPIO_LED_ACIN, !(color == LED_GREEN));
+	gpio_set_level(GPIO_LED_CHARGE, !(color == LED_RED));
 }
 
-#define LED_PULSE_US		(2 * SECOND)
-/* 40 msec for nice and smooth transition. */
-#define LED_PULSE_TICK_US	(40 * MSEC)
-
-/* When pulsing is enabled, brightness is incremented by <duty_inc> every
- * <interval> usec from 0 to 100% in LED_PULSE_US usec. Then it's decremented
- * likewise in LED_PULSE_US usec. */
-static struct {
-	uint32_t interval;
-	int duty_inc;
-	enum led_color color;
-	int duty;
-} led_pulse;
-
-#define CONFIG_TICK(interval, color) \
-	config_tick((interval), 100 / (LED_PULSE_US / (interval)), (color))
-
-static void config_tick(uint32_t interval, int duty_inc, enum led_color color)
+void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
 {
-	led_pulse.interval = interval;
-	led_pulse.duty_inc = duty_inc;
-	led_pulse.color = color;
-	led_pulse.duty = 0;
+	brightness_range[EC_LED_COLOR_RED] = 1;
+	brightness_range[EC_LED_COLOR_BLUE] = 1;
+	brightness_range[EC_LED_COLOR_GREEN] = 1;
 }
 
-static void pulse_power_led(enum led_color color)
+int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
 {
-	set_color(EC_LED_ID_POWER_LED, color, led_pulse.duty);
-	if (led_pulse.duty + led_pulse.duty_inc > 100)
-		led_pulse.duty_inc = led_pulse.duty_inc * -1;
-	else if (led_pulse.duty + led_pulse.duty_inc < 0)
-		led_pulse.duty_inc = led_pulse.duty_inc * -1;
-	led_pulse.duty += led_pulse.duty_inc;
-}
+	gpio_set_level(GPIO_POWER_LED, !brightness[EC_LED_COLOR_BLUE]);
+	gpio_set_level(GPIO_LED_ACIN, !brightness[EC_LED_COLOR_GREEN]);
+	gpio_set_level(GPIO_LED_CHARGE, !brightness[EC_LED_COLOR_RED]);
 
-static void led_tick(void);
-DECLARE_DEFERRED(led_tick);
-static void led_tick(void)
-{
-	uint32_t elapsed;
-	uint32_t next = 0;
-	uint32_t start = get_time().le.lo;
-	static uint8_t pwm_enabled = 0;
-
-	if (!pwm_enabled) {
-		pwm_enable(PWM_CH_LED_RED, 1);
-		pwm_enable(PWM_CH_LED_GREEN, 1);
-		pwm_enabled = 1;
-	}
-	if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED))
-		pulse_power_led(led_pulse.color);
-	elapsed = get_time().le.lo - start;
-	next = led_pulse.interval > elapsed ? led_pulse.interval - elapsed : 0;
-	hook_call_deferred(&led_tick_data, next);
+	return EC_SUCCESS;
 }
 
-static void led_suspend(void)
-{
-	CONFIG_TICK(LED_PULSE_TICK_US, LED_GREEN);
-	led_tick();
-}
-DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, led_suspend, HOOK_PRIO_DEFAULT);
 
-static void led_shutdown(void)
+static void nautilus_led_set_power_battery(void)
 {
-	hook_call_deferred(&led_tick_data, -1);
-	if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED))
-		set_color(EC_LED_ID_POWER_LED, LED_OFF, 0);
-}
-DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, led_shutdown, HOOK_PRIO_DEFAULT);
+	static unsigned int power_ticks;
+	enum led_color cur_led_color = LED_RED;
+	enum charge_state chg_state = charge_get_state();
+	int charge_percent = charge_get_percent();
+
+	if (chipset_in_state(CHIPSET_STATE_ON)) {
+		set_color(LED_BLUE);
+		return;
+	}
 
-static void led_resume(void)
-{
-	/* Assume there is no race condition with led_tick, which also
-	 * runs in hook_task. */
-	hook_call_deferred(&led_tick_data, -1);
-	if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED))
-		set_color(EC_LED_ID_POWER_LED, LED_GREEN, 100);
-}
-DECLARE_HOOK(HOOK_CHIPSET_RESUME, led_resume, HOOK_PRIO_DEFAULT);
+	/* Flash red on critical battery, which usually inhibits AP power-on. */
+	if (battery_is_present() != BP_YES ||
+		charge_percent < CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON) {
+			set_color(((power_ticks++ % LED_TOTAL_TICKS) < LED_ON_TICKS) ?
+						  LED_RED : LED_OFF);
+		return;
+	}
 
-void led_alert(int enable)
-{
-	if (enable) {
-		/* Overwrite the current signal */
-		config_tick(1 * SECOND, 100, LED_RED);
-		led_tick();
-	} else {
-		/* Restore the previous signal */
-		if (chipset_in_state(CHIPSET_STATE_ON))
-			led_resume();
-		else if (chipset_in_state(CHIPSET_STATE_SUSPEND))
-			led_suspend();
-		else if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
-			led_shutdown();
+	/* CHIPSET_STATE_OFF */
+	switch (chg_state) {
+	case PWR_STATE_DISCHARGE:
+		if ((charge_get_flags() & CHARGE_FLAG_EXTERNAL_POWER) &&
+			charge_percent >= BATTERY_LEVEL_NEAR_FULL)
+			cur_led_color = LED_GREEN;
+		else
+			cur_led_color = LED_OFF;
+		break;
+	case PWR_STATE_CHARGE:
+		cur_led_color = LED_RED;
+		break;
+	case PWR_STATE_ERROR:
+		cur_led_color = ((power_ticks++ % LED_TOTAL_TICKS)
+					  < LED_ON_TICKS) ? LED_RED : LED_GREEN;
+		break;
+	case PWR_STATE_CHARGE_NEAR_FULL:
+	case PWR_STATE_IDLE: /* External power connected in IDLE. */
+		cur_led_color = LED_GREEN;
+		break;
+	default:
+		cur_led_color = LED_RED;
+		break;
 	}
-}
 
-void led_critical(void)
-{
-	hook_call_deferred(&led_tick_data, -1);
-	if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED))
-		set_color(EC_LED_ID_POWER_LED, LED_RED, 100);
-}
+	set_color(cur_led_color);
 
-static int command_led(int argc, char **argv)
-{
-	enum ec_led_id id = EC_LED_ID_POWER_LED;
-
-	if (argc < 2)
-		return EC_ERROR_PARAM_COUNT;
-
-	if (!strcasecmp(argv[1], "debug")) {
-		led_auto_control(id, !led_auto_control_is_enabled(id));
-		ccprintf("o%s\n", led_auto_control_is_enabled(id) ? "ff" : "n");
-	} else if (!strcasecmp(argv[1], "off")) {
-		set_color(id, LED_OFF, 0);
-	} else if (!strcasecmp(argv[1], "red")) {
-		set_color(id, LED_RED, 100);
-	} else if (!strcasecmp(argv[1], "green")) {
-		set_color(id, LED_GREEN, 100);
-	} else if (!strcasecmp(argv[1], "amber")) {
-		set_color(id, LED_AMBER, 100);
-	} else if (!strcasecmp(argv[1], "alert")) {
-		led_alert(1);
-	} else if (!strcasecmp(argv[1], "crit")) {
-		led_critical();
-	} else {
-		return EC_ERROR_PARAM1;
-	}
-	return EC_SUCCESS;
+	if (chg_state != PWR_STATE_ERROR)
+		power_ticks = 0;
 }
-DECLARE_CONSOLE_COMMAND(led, command_led,
-			"[debug|red|green|amber|off|alert|crit]",
-			"Turn on/off LED.");
 
-void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
+/**
+ * Called by hook task every 250 ms
+ */
+static void led_tick(void)
 {
-	brightness_range[EC_LED_COLOR_RED] = 100;
-	brightness_range[EC_LED_COLOR_GREEN] = 100;
-	brightness_range[EC_LED_COLOR_AMBER] = 100;
+	if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED) &&
+		led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED)) {
+			nautilus_led_set_power_battery();
+	}
 }
 
-int led_set_brightness(enum ec_led_id id, const uint8_t *brightness)
-{
-	if (brightness[EC_LED_COLOR_RED])
-		return set_color(id, LED_RED, brightness[EC_LED_COLOR_RED]);
-	else if (brightness[EC_LED_COLOR_GREEN])
-		return set_color(id, LED_GREEN, brightness[EC_LED_COLOR_GREEN]);
-	else if (brightness[EC_LED_COLOR_AMBER])
-		return set_color(id, LED_AMBER, brightness[EC_LED_COLOR_AMBER]);
-	else
-		return set_color(id, LED_OFF, 0);
-}
+DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT);