Homestar: Remove the DA9313 support, add the LN9310 support

LN9310 and DA9313 are not pin compatible. The layout of
Homestar can only choose one and it is LN9310.
So remove the DA9313 support and add the LN9310's.

BRANCH=Trogdor
BUG=b:182358144
TEST=Built homestar image

Change-Id: I3c07c0f062a68f64a13a006aa7010c438dfe1b5e
Signed-off-by: xuxinxiong <xuxinxiong@huaqin.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2748208
Reviewed-by: Wai-Hong Tam <waihong@google.com>
Commit-Queue: Wai-Hong Tam <waihong@google.com>

3 files changed, 45 insertions, 11 deletions

diff --git a/board/homestar/board.c b/board/homestar/board.c
index 1afb735bbc..8e1977b49a 100644
--- a/board/homestar/board.c
+++ b/board/homestar/board.c
@@ -13,6 +13,7 @@
 #include "extpower.h"
 #include "driver/accel_bma2x2.h"
 #include "driver/accelgyro_bmi_common.h"
+#include "driver/ln9310.h"
 #include "driver/ppc/sn5s330.h"
 #include "driver/tcpm/ps8xxx.h"
 #include "driver/tcpm/tcpci.h"
@@ -47,6 +48,7 @@ static void usb0_evt(enum gpio_signal signal);
 static void usb1_evt(enum gpio_signal signal);
 static void ppc_interrupt(enum gpio_signal signal);
 static void board_connect_c0_sbu(enum gpio_signal s);
+static void switchcap_interrupt(enum gpio_signal signal);
 
 #include "gpio_list.h"
 
@@ -108,6 +110,11 @@ static void board_connect_c0_sbu(enum gpio_signal s)
 	hook_call_deferred(&board_connect_c0_sbu_deferred_data, 0);
 }
 
+static void switchcap_interrupt(enum gpio_signal signal)
+{
+	ln9310_interrupt(signal);
+}
+
 /* I2C port map */
 const struct i2c_port_t i2c_ports[] = {
 	{"power",   I2C_PORT_POWER,  100, GPIO_EC_I2C_POWER_SCL,
@@ -175,6 +182,12 @@ const struct pwm_t pwm_channels[] = {
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 
+/* LN9310 switchcap */
+const struct ln9310_config_t ln9310_config = {
+	.i2c_port = I2C_PORT_POWER,
+	.i2c_addr_flags = LN9310_I2C_ADDR_0_FLAGS,
+};
+
 /* Power Path Controller */
 struct ppc_config_t ppc_chips[] = {
 	{
@@ -300,6 +313,25 @@ struct motion_sensor_t motion_sensors[] = {
 };
 const unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);
 
+enum battery_cell_type board_get_battery_cell_type(void)
+{
+	return BATTERY_CELL_TYPE_2S;
+}
+
+static void board_switchcap_init(void)
+{
+	CPRINTS("Use switchcap: LN9310");
+
+	/* Configure and enable interrupt for LN9310 */
+	gpio_set_flags(GPIO_SWITCHCAP_PG_INT_L, GPIO_INT_FALLING);
+	gpio_enable_interrupt(GPIO_SWITCHCAP_PG_INT_L);
+
+	/* Only configure the switchcap if not sysjump */
+	if (!system_jumped_late()) {
+		ln9310_init();
+	}
+}
+
 /* Initialize board. */
 static void board_init(void)
 {
@@ -317,6 +349,8 @@ static void board_init(void)
 
 	/* Set the backlight duty cycle to 0. AP will override it later. */
 	pwm_set_duty(PWM_CH_DISPLIGHT, 0);
+
+	board_switchcap_init();
 }
 DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
 
@@ -404,17 +438,17 @@ DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
 
 void board_set_switchcap_power(int enable)
 {
-	gpio_set_level(GPIO_SWITCHCAP_ON, enable);
+	gpio_set_level(GPIO_SWITCHCAP_ON_L, !enable);
 }
 
 int board_is_switchcap_enabled(void)
 {
-	return gpio_get_level(GPIO_SWITCHCAP_ON);
+	return !gpio_get_level(GPIO_SWITCHCAP_ON_L);
 }
 
 int board_is_switchcap_power_good(void)
 {
-	return gpio_get_level(GPIO_DA9313_GPIO0);
+	return ln9310_power_good();
 }
 
 void board_reset_pd_mcu(void)
diff --git a/board/homestar/board.h b/board/homestar/board.h
index c5d2e4aaf3..0e715b9078 100644
--- a/board/homestar/board.h
+++ b/board/homestar/board.h
@@ -32,6 +32,9 @@
 /* Internal SPI flash on NPCX7 */
 #define CONFIG_FLASH_SIZE_BYTES (512 * 1024)  /* 512KB internal spi flash */
 
+/* Switchcap */
+#define CONFIG_LN9310
+
 /* Battery */
 #define CONFIG_BATTERY_DEVICE_CHEMISTRY  "LION"
 #define CONFIG_BATTERY_REVIVE_DISCONNECT
@@ -66,6 +69,7 @@
 #define GPIO_PMIC_RESIN_L GPIO_PM845_RESIN_L
 /* TODO(Dolan): check which pin was used for tablet mode detect */
 #define GMR_TABLET_MODE_GPIO_L GPIO_LID_OPEN_EC
+#define GPIO_SWITCHCAP_PG_INT_L GPIO_LN9310_INT
 
 #ifndef __ASSEMBLER__
 
diff --git a/board/homestar/gpio.inc b/board/homestar/gpio.inc
index 23461fc432..165968d48c 100644
--- a/board/homestar/gpio.inc
+++ b/board/homestar/gpio.inc
@@ -44,6 +44,9 @@ GPIO_INT(BASE_DET_L,        PIN(3, 7), GPIO_INT_BOTH, base_detect_interrupt)  /*
 /* Sensor interrupts */
 GPIO_INT(ACCEL_GYRO_INT_L,  PIN(A, 0), GPIO_INT_FALLING, bmi160_interrupt)  /* Accelerometer/gyro interrupt */
 
+/* Switchcap, for LN9310, it is the interrupt line of LN9310. */
+GPIO_INT(LN9310_INT,      PIN(E, 2), GPIO_INT_FALLING, switchcap_interrupt)
+
 /*
  * EC_RST_ODL acts as a wake source from hibernate mode. However, it does not
  * need to be an interrupt for normal EC operations. Simply set it an INPUT.
@@ -60,7 +63,7 @@ GPIO(QSIP_ON,               PIN(5, 0), GPIO_OUT_LOW)   /* Not used, for non-swit
 
 /* Power enables */
 GPIO(HIBERNATE_L,           PIN(5, 2), GPIO_OUT_HIGH)  /* EC hibernate */
-GPIO(SWITCHCAP_ON,          PIN(D, 5), GPIO_OUT_LOW)   /* Enable switch cap; will be configured in the board init */
+GPIO(SWITCHCAP_ON_L,        PIN(D, 5), GPIO_ODR_HIGH)   /* Enable switch cap */
 GPIO(EN_PP3300_A,           PIN(A, 6), GPIO_OUT_LOW)   /* Enable PP3300 */
 GPIO(EN_PP5000_A,           PIN(6, 7), GPIO_OUT_LOW)   /* Enable PP5000 */
 GPIO(EC_BL_DISABLE_L,       PIN(B, 6), GPIO_OUT_LOW)   /* Backlight disable signal from EC */
@@ -121,13 +124,6 @@ GPIO(SKU_ID0,               PIN(F, 0), GPIO_INPUT)
 GPIO(SKU_ID1,               PIN(4, 1), GPIO_INPUT)
 GPIO(SKU_ID2,               PIN(D, 4), GPIO_INPUT)
 
-/* Switchcap */
-/*
- * GPIO0 is configured as PVC_PG. When the chip in power down mode, it outputs
- * high-Z. Set pull-down to avoid floating.
- */
-GPIO(DA9313_GPIO0,          PIN(E, 2), GPIO_INPUT | GPIO_PULL_DOWN) /* Switchcap GPIO0 */
-
 /* Special straps */
 GPIO(ARM_X86,               PIN(6, 6), GPIO_OUT_LOW)  /* NC, low for power saving */