kano: Change LED control behavior

Change LED control from pwm to gpio.

BUG=none
BRANCH=master
TEST=Check LED status in each state.

Signed-off-by: David Huang <david.huang@quanta.corp-partner.google.com>
Change-Id: I640380175fe505348df3c3fa532c392ffa5943d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3244810
Reviewed-by: Boris Mittelberg <bmbm@google.com>

4 files changed, 60 insertions, 90 deletions

diff --git a/board/kano/board.h b/board/kano/board.h
index 3294092848..1101b68d9a 100644
--- a/board/kano/board.h
+++ b/board/kano/board.h
@@ -27,16 +27,7 @@
 #define CONFIG_MP2964
 
 /* LED */
-#define CONFIG_LED_PWM
-#define CONFIG_LED_PWM_COUNT 1
-#undef CONFIG_LED_PWM_NEAR_FULL_COLOR
-#undef CONFIG_LED_PWM_SOC_ON_COLOR
-#undef CONFIG_LED_PWM_SOC_SUSPEND_COLOR
-#undef CONFIG_LED_PWM_LOW_BATT_COLOR
-#define CONFIG_LED_PWM_NEAR_FULL_COLOR EC_LED_COLOR_WHITE
-#define CONFIG_LED_PWM_SOC_ON_COLOR EC_LED_COLOR_WHITE
-#define CONFIG_LED_PWM_SOC_SUSPEND_COLOR EC_LED_COLOR_WHITE
-#define CONFIG_LED_PWM_LOW_BATT_COLOR EC_LED_COLOR_AMBER
+#define CONFIG_LED_ONOFF_STATES
 
 /* Sensors */
 #define CONFIG_ACCELGYRO_ICM426XX	/* Base accel */
@@ -224,9 +215,7 @@ enum battery_type {
 };
 
 enum pwm_channel {
-	PWM_CH_LED2 = 0,		/* PWM0 (white charger) */
-	PWM_CH_LED1,			/* PWM2 (orange charger) */
-	PWM_CH_KBLIGHT,			/* PWM3 */
+	PWM_CH_KBLIGHT = 0,		/* PWM3 */
 	PWM_CH_FAN,			/* PWM5 */
 	PWM_CH_COUNT
 };
diff --git a/board/kano/gpio.inc b/board/kano/gpio.inc
index ff0fa9b12a..e5b452ced3 100644
--- a/board/kano/gpio.inc
+++ b/board/kano/gpio.inc
@@ -74,6 +74,8 @@ GPIO(USB_C1_FRS_EN,                  PIN(9, 4), GPIO_OUT_LOW)
 GPIO(USB_C1_RT_INT_ODL,              PIN(A, 0), GPIO_INPUT)
 GPIO(USB_C1_RT_RST_R_ODL,            PIN(0, 2), GPIO_ODR_LOW)
 GPIO(VCCST_PWRGD_OD,                 PIN(A, 4), GPIO_ODR_LOW)
+GPIO(LED_1_L,                        PIN(C, 4), GPIO_OUT_HIGH)
+GPIO(LED_2_L,                        PIN(C, 3), GPIO_OUT_HIGH)
 
 /* UART alternate functions */
 ALTERNATE(PIN_MASK(6, 0x30), 0, MODULE_UART, 0)              /* GPIO64/CR_SIN1, GPO65/CR_SOUT1/FLPRG1_L */
@@ -92,7 +94,6 @@ ALTERNATE(PIN_MASK(F, 0x0c), 0, MODULE_I2C, 0)               /* GPIOF3/I2C4_SCL1
 ALTERNATE(PIN_MASK(4, 0x01), 0, MODULE_PWM, 0)               /* GPIO40/TA1 */
 ALTERNATE(PIN_MASK(8, 0x01), 0, MODULE_PWM, 0)               /* GPIO80/PWM3 */
 ALTERNATE(PIN_MASK(B, 0x80), 0, MODULE_PWM, 0)               /* GPIOB7/PWM5 */
-ALTERNATE(PIN_MASK(C, 0x18), 0, MODULE_PWM, 0)               /* GPIOC4/PWM2, GPIOC3/PWM0 */
 
 /* ADC alternate functions */
 ALTERNATE(PIN_MASK(3, 0x10), 0, MODULE_ADC, 0)               /* GPIO34/PS2_DAT2/ADC6 */
diff --git a/board/kano/led.c b/board/kano/led.c
index ab1021b845..23c9fca50c 100644
--- a/board/kano/led.c
+++ b/board/kano/led.c
@@ -1,83 +1,79 @@
 /* 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 kano
  */
 
-/* Brya specific PWM LED settings: there are 2 LEDs on each side of the board,
- * each one can be controlled separately. The LED colors are white or amber,
- * and the default behavior is tied to the charging process: both sides are
- * amber while charging the battery and white when the battery is charged.
- */
+#include "ec_commands.h"
+#include "gpio.h"
+#include "led_common.h"
+#include "led_onoff_states.h"
+#include "chipset.h"
 
-#include <stdint.h>
+#define LED_ON_LVL 0
+#define LED_OFF_LVL 1
 
-#include "common.h"
-#include "compile_time_macros.h"
-#include "ec_commands.h"
-#include "led_pwm.h"
-#include "pwm.h"
-#include "util.h"
+__override const int led_charge_lvl_1 = 5;
+
+__override const int led_charge_lvl_2 = 95;
+
+__override 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_BLUE,  LED_INDEFINITE} },
+	[STATE_DISCHARGE_S0]	     = {{EC_LED_COLOR_BLUE,  LED_INDEFINITE} },
+	[STATE_DISCHARGE_S3]	     = {{EC_LED_COLOR_AMBER, 1 * LED_ONE_SEC},
+					{LED_OFF,            3 * LED_ONE_SEC} },
+	[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_BLUE,   2 * LED_ONE_SEC},
+					{EC_LED_COLOR_AMBER, 2 * LED_ONE_SEC} },
+};
 
 const enum ec_led_id supported_led_ids[] = {
-	EC_LED_ID_LEFT_LED,
-	EC_LED_ID_RIGHT_LED,
+	EC_LED_ID_BATTERY_LED
 };
 
 const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
 
-/*
- * We only have a white and an amber LED, so setting any other color results in
- * both LEDs being off.
- */
-struct pwm_led_color_map led_color_map[EC_LED_COLOR_COUNT] = {
-				/* Amber, White */
-	[EC_LED_COLOR_RED]    = {   0,   0 },
-	[EC_LED_COLOR_GREEN]  = {   0,   0 },
-	[EC_LED_COLOR_BLUE]   = {   0,   0 },
-	[EC_LED_COLOR_YELLOW] = {   0,   0 },
-	[EC_LED_COLOR_WHITE]  = {   0, 100 },
-	[EC_LED_COLOR_AMBER]  = {  100,  0 },
-};
-
-/* Two logical LEDs with amber and white channels. */
-struct pwm_led pwm_leds[CONFIG_LED_PWM_COUNT] = {
-	{
-		.ch0 = PWM_CH_LED1,
-		.ch1 = PWM_CH_LED2,
-		.ch2 = PWM_LED_NO_CHANNEL,
-		.enable = &pwm_enable,
-		.set_duty = &pwm_set_duty,
-	},
-};
+__override 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_ON_LVL);
+		gpio_set_level(GPIO_LED_1_L, LED_OFF_LVL);
+		break;
+	case EC_LED_COLOR_BLUE:
+		gpio_set_level(GPIO_LED_1_L, LED_ON_LVL);
+		gpio_set_level(GPIO_LED_2_L, LED_OFF_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)
 {
-	memset(brightness_range, '\0',
-	       sizeof(*brightness_range) * EC_LED_COLOR_COUNT);
-	brightness_range[EC_LED_COLOR_AMBER] = 100;
-	brightness_range[EC_LED_COLOR_WHITE] = 100;
+	if (led_id == EC_LED_ID_BATTERY_LED) {
+		brightness_range[EC_LED_COLOR_AMBER] = 1;
+		brightness_range[EC_LED_COLOR_BLUE] = 1;
+	}
 }
 
 int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
 {
-	enum pwm_led_id pwm_id;
-
-	/* Convert ec_led_id to pwm_led_id. */
-	switch (led_id) {
-	case EC_LED_ID_LEFT_LED:
-		pwm_id = PWM_LED0;
-		break;
-	default:
-		return EC_ERROR_UNKNOWN;
+	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_BLUE] != 0)
+			led_set_color_battery(EC_LED_COLOR_BLUE);
+		else
+			led_set_color_battery(LED_OFF);
 	}
 
-	if (brightness[EC_LED_COLOR_WHITE])
-		set_pwm_led_color(pwm_id, EC_LED_COLOR_WHITE);
-	else if (brightness[EC_LED_COLOR_AMBER])
-		set_pwm_led_color(pwm_id, EC_LED_COLOR_AMBER);
-	else
-		/* Otherwise, the "color" is "off". */
-		set_pwm_led_color(pwm_id, -1);
-
 	return EC_SUCCESS;
 }
diff --git a/board/kano/pwm.c b/board/kano/pwm.c
index 66239d606f..dc09a2bed5 100644
--- a/board/kano/pwm.c
+++ b/board/kano/pwm.c
@@ -11,16 +11,6 @@
 #include "pwm_chip.h"
 
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_LED2] = {
-		.channel = 0,
-		.flags = PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
-		.freq = 4800,
-	},
-	[PWM_CH_LED1] = {
-		.channel = 2,
-		.flags = PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
-		.freq = 4800,
-	},
 	[PWM_CH_KBLIGHT] = {
 		.channel = 3,
 		.flags = 0,
@@ -43,14 +33,8 @@ BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 static void board_pwm_init(void)
 {
 	/*
-	 * Turn on all the LED at 50%.
-	 * Turn on the fan at 100%.
+	 * Turn on the fan at 50%.
 	 */
-	pwm_enable(PWM_CH_LED1, 1);
-	pwm_set_duty(PWM_CH_LED1, 50);
-	pwm_enable(PWM_CH_LED2, 1);
-	pwm_set_duty(PWM_CH_LED2, 50);
-
 	pwm_enable(PWM_CH_KBLIGHT, 1);
 	pwm_set_duty(PWM_CH_KBLIGHT, 50);
 }