mithrax: Initial EC image

Copy the Felwinter reference board EC files into a new directory
name for the Mithrax variant.

(Copy from commit 60c5d955940500bd5c9ea29ed8814c2977adc266.)

BUG=b:223091246
BRANCH=None
TEST=make BOARD=mithrax

Signed-off-by: johnwc_yeh <johnwc_yeh@compal.corp-partner.google.com>
Change-Id: Ieea80fcf70f55e02755d32d065c90503a820d97c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3631847
Reviewed-by: Ko Ko <ko_ko@compal.corp-partner.google.com>
Reviewed-by: Boris Mittelberg <bmbm@google.com>

1 files changed, 108 insertions, 44 deletions

diff --git a/board/mithrax/board.c b/board/mithrax/board.c
index 4ca53ffa48..892c4d85bd 100644
--- a/board/mithrax/board.c
+++ b/board/mithrax/board.c
@@ -1,4 +1,4 @@
-/* Copyright 2022 The Chromium OS Authors. All rights reserved.
+/* 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.
  */
@@ -15,7 +15,6 @@
 #include "hooks.h"
 #include "driver/accel_lis2dw12.h"
 #include "driver/accelgyro_lsm6dso.h"
-#include "driver/als_tcs3400.h"
 #include "fw_config.h"
 #include "hooks.h"
 #include "lid_switch.h"
@@ -33,6 +32,16 @@
 #define CPRINTF(format, args...) cprintf(CC_CHARGER, format, ## args)
 #define CPRINTS(format, args...) cprints(CC_CHARGER, format, ## args)
 
+/******************************************************************************/
+/* USB-A charging control */
+
+const int usb_port_enable[USB_PORT_COUNT] = {
+	GPIO_EN_PP5000_USBA_R,
+};
+BUILD_ASSERT(ARRAY_SIZE(usb_port_enable) == USB_PORT_COUNT);
+
+/******************************************************************************/
+
 __override void board_cbi_init(void)
 {
 	config_usb_db_type();
@@ -42,11 +51,7 @@ __override void board_cbi_init(void)
 static void board_chipset_resume(void)
 {
 	/* Allow keyboard backlight to be enabled */
-
-	if (get_board_id() == 1)
-		gpio_set_level(GPIO_ID_1_EC_KB_BL_EN, 1);
-	else
-		gpio_set_level(GPIO_EC_KB_BL_EN_L, 0);
+	gpio_set_level(GPIO_EC_KB_BL_EN_L, 0);
 }
 DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
 
@@ -54,55 +59,114 @@ DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
 static void board_chipset_suspend(void)
 {
 	/* Turn off the keyboard backlight if it's on. */
-
-	if (get_board_id() == 1)
-		gpio_set_level(GPIO_ID_1_EC_KB_BL_EN, 0);
-	else
-		gpio_set_level(GPIO_EC_KB_BL_EN_L, 1);
+	gpio_set_level(GPIO_EC_KB_BL_EN_L, 1);
 }
 DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT);
 
+/* Called on AP S5 -> S3 transition */
+static void board_chipset_startup(void)
+{
+	pen_config();
+}
+DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT);
+
+#ifdef CONFIG_CHARGE_RAMP_SW
+
 /*
- * Explicitly apply the board ID 1 *gpio.inc settings to pins that
- * were reassigned on current boards.
+ * TODO(b/181508008): tune this threshold
  */
 
-static void set_board_id_1_gpios(void)
+#define BC12_MIN_VOLTAGE 4400
+
+/**
+ * Return true if VBUS is too low
+ */
+int board_is_vbus_too_low(int port, enum chg_ramp_vbus_state ramp_state)
 {
-	if (get_board_id() != 1)
-		return;
+	int voltage;
+
+	if (charger_get_vbus_voltage(port, &voltage))
+		voltage = 0;
+
+	if (voltage == 0) {
+		CPRINTS("%s: must be disconnected", __func__);
+		return 1;
+	}
+
+	if (voltage < BC12_MIN_VOLTAGE) {
+		CPRINTS("%s: port %d: vbus %d lower than %d", __func__,
+			port, voltage, BC12_MIN_VOLTAGE);
+		return 1;
+	}
 
-	gpio_set_flags(GPIO_ID_1_EC_KB_BL_EN, GPIO_OUT_LOW);
+	return 0;
 }
-DECLARE_HOOK(HOOK_INIT, set_board_id_1_gpios, HOOK_PRIO_FIRST);
 
-/*
- * Reclaim GPIO pins on board ID 1 that are used as ADC inputs on
- * current boards. ALT function group MODULE_ADC pins are set in
- * HOOK_PRIO_INIT_ADC and can be reclaimed right after the hook runs.
- */
+#endif /* CONFIG_CHARGE_RAMP_SW */
+
+enum battery_present battery_hw_present(void)
+{
+	enum gpio_signal batt_pres;
+
+	batt_pres = GPIO_EC_BATT_PRES_ODL;
 
-static void board_id_1_reclaim_adc(void)
+	/* The GPIO is low when the battery is physically present */
+	return gpio_get_level(batt_pres) ? BP_NO : BP_YES;
+}
+
+static void board_init(void)
+{
+	if (ec_cfg_usb_db_type() == DB_USB4_NCT3807)
+		db_update_usb4_config_from_config();
+
+	if (ec_cfg_usb_mb_type() == MB_USB4_TBT)
+		mb_update_usb4_tbt_config_from_config();
+
+	if (ec_cfg_stylus() == STYLUS_PRSENT)
+		gpio_enable_interrupt(GPIO_PEN_DET_ODL);
+}
+DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
+
+
+/**
+ * Deferred function to handle pen detect change
+ */
+static void pendetect_deferred(void)
 {
-	if (get_board_id() != 1)
+	static int debounced_pen_detect;
+	int pen_detect = !gpio_get_level(GPIO_PEN_DET_ODL);
+
+	if (pen_detect == debounced_pen_detect)
 		return;
 
-	/*
-	 * GPIO_ID_1_USB_C0_C2_TCPC_RST_ODL is on GPIO34
-	 *
-	 * The TCPC has already been reset by board_tcpc_init() executed
-	 * from HOOK_PRIO_INIT_CHIPSET. Later, the pin gets set to ADC6
-	 * in HOOK_PRIO_INIT_ADC, so we simply need to set the pin back
-	 * to GPIO34.
-	 */
-	gpio_set_flags(GPIO_ID_1_USB_C0_C2_TCPC_RST_ODL, GPIO_ODR_HIGH);
-	gpio_set_alternate_function(GPIO_PORT_3, BIT(4), GPIO_ALT_FUNC_NONE);
-
-	/*
-	 * The pin gets set to ADC7 in HOOK_PRIO_INIT_ADC, so we simply
-	 * need to set it back to GPIOE1.
-	 */
-	gpio_set_flags(GPIO_ID_1_EC_BATT_PRES_ODL, GPIO_INPUT);
-	gpio_set_alternate_function(GPIO_PORT_E, BIT(1), GPIO_ALT_FUNC_NONE);
+	debounced_pen_detect = pen_detect;
+
+	if (!chipset_in_state(CHIPSET_STATE_ANY_OFF))
+		gpio_set_level(GPIO_EN_PP5000_PEN, debounced_pen_detect);
+}
+DECLARE_DEFERRED(pendetect_deferred);
+DECLARE_HOOK(HOOK_INIT, pendetect_deferred, HOOK_PRIO_DEFAULT);
+
+void pen_detect_interrupt(enum gpio_signal s)
+{
+	/* Trigger deferred notification of pen detect change */
+	hook_call_deferred(&pendetect_deferred_data,
+			500 * MSEC);
+}
+
+void pen_config(void)
+{
+	if (ec_cfg_stylus() == STYLUS_PRSENT) {
+		/* Make sure pen detection is triggered or not at resume */
+		if (!gpio_get_level(GPIO_PEN_DET_ODL))
+			gpio_set_level(GPIO_EN_PP5000_PEN, 1);
+		else
+			gpio_set_level(GPIO_EN_PP5000_PEN, 0);
+	}
+}
+
+static void board_chipset_shutdown(void)
+{
+	gpio_set_level(GPIO_EN_PP5000_PEN, 0);
 }
-DECLARE_HOOK(HOOK_INIT, board_id_1_reclaim_adc, HOOK_PRIO_INIT_ADC + 1);
+DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT);