gimble: Initial EC image

Create the initial EC image for the gimble variant by copying
the brya reference board EC files into a new directory named for
the variant.

(Auto-Generated by create_initial_ec_image.sh version 1.5.0).

BUG=b:190334274
BRANCH=None
TEST=make BOARD=gimble

Signed-off-by: Mark Hsieh <mark_hsieh@wistron.corp-partner.google.com>
Change-Id: Ia740667582e0f53bfc6afb37d23edf8c2d1d543e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2944517
Reviewed-by: Scott Chao <scott_chao@wistron.corp-partner.google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: Scott Chao <scott_chao@wistron.corp-partner.google.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/board/gimble/led.c b/board/gimble/led.c
new file mode 100644
index 0000000000..aa8da52778
--- /dev/null
+++ b/board/gimble/led.c
@@ -0,0 +1,90 @@
+/* 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.
+ */
+
+/* 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 "common.h"
+#include "ec_commands.h"
+#include "led_pwm.h"
+#include "pwm.h"
+#include "util.h"
+
+const enum ec_led_id supported_led_ids[] = {
+	EC_LED_ID_LEFT_LED,
+	EC_LED_ID_RIGHT_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 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,
+	},
+	{
+		.ch0 = PWM_CH_LED3,
+		.ch1 = PWM_CH_LED4,
+		.ch2 = PWM_LED_NO_CHANNEL,
+		.enable = &pwm_enable,
+		.set_duty = &pwm_set_duty,
+	},
+};
+
+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;
+}
+
+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;
+	case EC_LED_ID_RIGHT_LED:
+		pwm_id = PWM_LED1;
+		break;
+	default:
+		return EC_ERROR_UNKNOWN;
+	}
+
+	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;
+}