zephyr: test: drivers: Use the LN9310 emulator

Test the LN9310 init function for both 2S and 3S battery types.

BRANCH=none
BUG=b:184856083
TEST=zmake configure --test zephyr/test/drivers

Signed-off-by: Yuval Peress <peress@chromium.org>
Change-Id: I6c6804657377cab615f7af6661839b019ab88a8a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3159648
Commit-Queue: Yuval Peress <peress@google.com>
Tested-by: Yuval Peress <peress@google.com>
Reviewed-by: Jeremy Bettis <jbettis@chromium.org>

4 files changed, 63 insertions, 0 deletions

diff --git a/zephyr/test/drivers/overlay.dts b/zephyr/test/drivers/overlay.dts
index 9ca18812b2..56027a7138 100644
--- a/zephyr/test/drivers/overlay.dts
+++ b/zephyr/test/drivers/overlay.dts
@@ -75,6 +75,11 @@
 			enum-name = "I2C_PORT_BATTERY";
 			label = "BATTERY";
 		};
+		power {
+			i2c-port = <&i2c0>;
+			enum-name = "I2C_PORT_POWER";
+			label = "POWER";
+		};
 		charger {
 			i2c-port = <&i2c0>;
 			enum-name = "I2C_PORT_CHARGER";
@@ -483,4 +488,11 @@
 		error-on-ro-write;
 		error-on-reserved-bit-write;
 	};
+
+	ln9310: ln9310@80 {
+		compatible = "cros,ln9310-emul";
+		status = "okay";
+		reg = <0x80>;
+		label = "LN9310";
+	};
 };
diff --git a/zephyr/test/drivers/prj.conf b/zephyr/test/drivers/prj.conf
index 4a6e981d7a..ff7f93b918 100644
--- a/zephyr/test/drivers/prj.conf
+++ b/zephyr/test/drivers/prj.conf
@@ -55,6 +55,7 @@ CONFIG_PLATFORM_EC_STEINHART_HART_3V0_22K6_47K_4050B=y
 CONFIG_PLATFORM_EC_STEINHART_HART_3V3_13K7_47K_4050B=y
 CONFIG_PLATFORM_EC_STEINHART_HART_3V3_30K9_47K_4050B=y
 CONFIG_PLATFORM_EC_STEINHART_HART_3V3_51K1_47K_4050B=y
+CONFIG_PLATFORM_EC_SWITCHCAP_LN9310=y
 CONFIG_PLATFORM_EC_ACCEL_BMA255=y
 CONFIG_PLATFORM_EC_MOTIONSENSE=y
 CONFIG_PLATFORM_EC_ACCELGYRO_BMI160=y
diff --git a/zephyr/test/drivers/src/ln9310.c b/zephyr/test/drivers/src/ln9310.c
new file mode 100644
index 0000000000..d41625f98f
--- /dev/null
+++ b/zephyr/test/drivers/src/ln9310.c
@@ -0,0 +1,48 @@
+/* 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 <ztest.h>
+#include <drivers/emul.h>
+#include "driver/ln9310.h"
+#include "emul/emul_ln9310.h"
+
+void test_ln9310_2s_no_startup__passes_init(void)
+{
+	const struct emul *emulator =
+		emul_get_binding(DT_LABEL(DT_NODELABEL(ln9310)));
+
+	zassert_not_null(emulator, NULL);
+
+	ln9310_emul_set_context(emulator);
+	ln9310_emul_reset(emulator);
+	ln9310_emul_set_battery_cell_type(emulator, BATTERY_CELL_TYPE_2S);
+	ln9310_emul_set_version(emulator, LN9310_BC_STS_C_CHIP_REV_FIXED);
+
+	zassert_ok(ln9310_init(), NULL);
+}
+
+void test_ln9310_3s_no_startup__passes_init(void)
+{
+	const struct emul *emulator =
+		emul_get_binding(DT_LABEL(DT_NODELABEL(ln9310)));
+
+	zassert_not_null(emulator, NULL);
+
+	ln9310_emul_set_context(emulator);
+	ln9310_emul_reset(emulator);
+	ln9310_emul_set_battery_cell_type(emulator, BATTERY_CELL_TYPE_3S);
+	ln9310_emul_set_version(emulator, LN9310_BC_STS_C_CHIP_REV_FIXED);
+
+	zassert_ok(ln9310_init(), NULL);
+}
+
+void test_suite_ln9310(void)
+{
+	ztest_test_suite(
+		ln9310,
+		ztest_unit_test(test_ln9310_2s_no_startup__passes_init),
+		ztest_unit_test(test_ln9310_3s_no_startup__passes_init));
+	ztest_run_test_suite(ln9310);
+}
diff --git a/zephyr/test/drivers/src/main.c b/zephyr/test/drivers/src/main.c
index 3336baeda5..5237f74c2f 100644
--- a/zephyr/test/drivers/src/main.c
+++ b/zephyr/test/drivers/src/main.c
@@ -20,6 +20,7 @@ extern void test_suite_bmi160(void);
 extern void test_suite_tcs3400(void);
 extern void test_suite_espi(void);
 extern void test_suite_bb_retimer(void);
+extern void test_suite_ln9310(void);
 
 void test_main(void)
 {
@@ -41,4 +42,5 @@ void test_main(void)
 	test_suite_tcs3400();
 	test_suite_espi();
 	test_suite_bb_retimer();
+	test_suite_ln9310();
 }