3 files changed, 102 insertions, 0 deletions
diff --git a/zephyr/shim/src/CMakeLists.txt b/zephyr/shim/src/CMakeLists.txt
index 7be2e75fb2..5fee14dfbd 100644
--- a/zephyr/shim/src/CMakeLists.txt
+++ b/zephyr/shim/src/CMakeLists.txt
@@ -33,6 +33,10 @@ zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_MOTIONSENSE
 zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_PANIC       panic.c)
 zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_PWM         pwm.c)
 zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_RTC         rtc.c)
+zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_SWITCHCAP_GPIO
+															switchcap_gpio.c)
+zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_SWITCHCAP_LN9310
+															switchcap_ln9310.c)
 zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_TEMP_SENSOR temp_sensors.c
                                                             thermal.c)
 zephyr_library_sources_ifdef(CONFIG_PLATFORM_EC_TIMER       hwtimer.c)
diff --git a/zephyr/shim/src/switchcap_gpio.c b/zephyr/shim/src/switchcap_gpio.c
new file mode 100644
index 0000000000..c635978b8b
--- /dev/null
+++ b/zephyr/shim/src/switchcap_gpio.c
@@ -0,0 +1,47 @@
+/* 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.
+ */
+
+#include <devicetree.h>
+#include "common.h"
+#include "gpio.h"
+
+#if DT_NODE_EXISTS(DT_PATH(switchcap))
+
+#if !DT_NODE_HAS_COMPAT(DT_PATH(switchcap), switchcap_gpio)
+#error "Invalid /switchcap node in device tree"
+#endif
+
+#define SC_PIN_ENABLE_PHANDLE \
+	DT_PHANDLE_BY_IDX(DT_PATH(switchcap), enable_pin, 0)
+#define SC_PIN_ENABLE \
+	GPIO_SIGNAL(SC_PIN_ENABLE_PHANDLE)
+
+#define SC_PIN_POWER_GOOD_PHANDLE \
+	DT_PHANDLE_BY_IDX(DT_PATH(switchcap), power_good_pin, 0)
+#define SC_PIN_POWER_GOOD_EXISTS \
+	DT_NODE_EXISTS(SC_PIN_POWER_GOOD_PHANDLE)
+#define SC_PIN_POWER_GOOD \
+	GPIO_SIGNAL(SC_PIN_POWER_GOOD_PHANDLE)
+
+void board_set_switchcap_power(int enable)
+{
+	gpio_set_level(SC_PIN_ENABLE, enable);
+}
+
+int board_is_switchcap_enabled(void)
+{
+	return gpio_get_level(SC_PIN_ENABLE);
+}
+
+int board_is_switchcap_power_good(void)
+{
+#if SC_PIN_POWER_GOOD_EXISTS
+	return gpio_get_level(SC_PIN_POWER_GOOD);
+#else
+	return 1;
+#endif
+}
+
+#endif
diff --git a/zephyr/shim/src/switchcap_ln9310.c b/zephyr/shim/src/switchcap_ln9310.c
new file mode 100644
index 0000000000..997ed8d15f
--- /dev/null
+++ b/zephyr/shim/src/switchcap_ln9310.c
@@ -0,0 +1,51 @@
+/* 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.
+ */
+
+#include <devicetree.h>
+#include "common.h"
+#include "gpio.h"
+#include "ln9310.h"
+
+#if DT_NODE_EXISTS(DT_PATH(switchcap))
+
+#if !DT_NODE_HAS_COMPAT(DT_PATH(switchcap), switchcap_ln9310)
+#error "Invalid /switchcap node in device tree"
+#endif
+
+#define SC_PIN_ENABLE_L_PHANDLE \
+	DT_PHANDLE_BY_IDX(DT_PATH(switchcap), enable_l_pin, 0)
+#define SC_PIN_ENABLE_L \
+	GPIO_SIGNAL(SC_PIN_ENABLE_L_PHANDLE)
+
+#define SC_PORT_PHANDLE \
+	DT_PHANDLE(DT_PATH(switchcap), port)
+#define SC_PORT \
+	DT_ENUM_UPPER_TOKEN(SC_PORT_PHANDLE, enum_name)
+
+#define SC_ADDR_FLAGS \
+	DT_ENUM_UPPER_TOKEN(DT_PATH(switchcap), addr_flags)
+
+void board_set_switchcap_power(int enable)
+{
+	gpio_set_level(SC_PIN_ENABLE_L, !enable);
+	ln9310_software_enable(enable);
+}
+
+int board_is_switchcap_enabled(void)
+{
+	return !gpio_get_level(SC_PIN_ENABLE_L);
+}
+
+int board_is_switchcap_power_good(void)
+{
+	return ln9310_power_good();
+}
+
+const struct ln9310_config_t ln9310_config = {
+	.i2c_port = SC_PORT,
+	.i2c_addr_flags = SC_ADDR_FLAGS,
+};
+
+#endif