coachz: Enable stylus charging

This patch enables stylus charging.

BUG=b:173235954
BRANCH=Trogdor
TEST=See the description of CL:2538536.

Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Change-Id: Ia28214cc963168df7b229a6fbf530fc357e85740
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2538540
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>

4 files changed, 28 insertions, 2 deletions

diff --git a/board/coachz/board.c b/board/coachz/board.c
index 1191b4566a..27e5885d6b 100644
--- a/board/coachz/board.c
+++ b/board/coachz/board.c
@@ -9,6 +9,7 @@
 #include "button.h"
 #include "charge_manager.h"
 #include "charge_state.h"
+#include "common.h"
 #include "extpower.h"
 #include "driver/accel_bma2x2.h"
 #include "driver/accelgyro_bmi_common.h"
@@ -20,11 +21,13 @@
 #include "keyboard_mkbp.h"
 #include "keyboard_scan.h"
 #include "lid_switch.h"
+#include "peripheral_charger.h"
 #include "pi3usb9201.h"
 #include "power.h"
 #include "power_button.h"
 #include "pwm.h"
 #include "pwm_chip.h"
+#include "queue.h"
 #include "system.h"
 #include "shi_chip.h"
 #include "switch.h"
@@ -47,6 +50,20 @@ static void ks_interrupt(enum gpio_signal s);
 
 #include "gpio_list.h"
 
+extern struct pchg_drv ctn730_drv;
+
+struct pchg pchgs[] = {
+	[0] = {
+		.cfg = &(const struct pchg_config) {
+			.drv = &ctn730_drv,
+			.i2c_port = I2C_PORT_WLC,
+			.irq_pin = GPIO_WLC_IRQ_CONN,
+		},
+		.events = QUEUE_NULL(PCHG_EVENT_QUEUE_SIZE, enum pchg_event),
+	},
+};
+const int pchg_count = ARRAY_SIZE(pchgs);
+
 /* GPIO Interrupt Handlers */
 static void tcpc_alert_event(enum gpio_signal signal)
 {
@@ -167,7 +184,7 @@ const struct i2c_port_t i2c_ports[] = {
 					  GPIO_EC_I2C_USB_C0_PD_SDA},
 	{"tcpc1",   I2C_PORT_TCPC1, 1000, GPIO_EC_I2C_USB_C1_PD_SCL,
 					  GPIO_EC_I2C_USB_C1_PD_SDA},
-	{"wlc",     I2C_PORT_WLC,   1000, GPIO_EC_I2C_WLC_SCL,
+	{"wlc",     I2C_PORT_WLC,    400, GPIO_EC_I2C_WLC_SCL,
 					  GPIO_EC_I2C_WLC_SDA},
 	{"eeprom",  I2C_PORT_EEPROM, 400, GPIO_EC_I2C_EEPROM_SCL,
 					  GPIO_EC_I2C_EEPROM_SDA},
diff --git a/board/coachz/board.h b/board/coachz/board.h
index 072ff42a04..10b72093cb 100644
--- a/board/coachz/board.h
+++ b/board/coachz/board.h
@@ -54,6 +54,11 @@
 #define GPIO_KS_ATTACHED_L GPIO_LID_INT_N_HALL1
 #define GPIO_KS_OPEN GPIO_LID_INT_N_HALL2
 
+/* WLC pins */
+#define GPIO_PCHG_P0 GPIO_WLC_IRQ_CONN
+#define CONFIG_PERIPHERAL_CHARGER
+#define CONFIG_CTN730
+
 #ifndef __ASSEMBLER__
 
 #include "gpio_signal.h"
diff --git a/board/coachz/ec.tasklist b/board/coachz/ec.tasklist
index 49e7fb11c6..dc5b32b4cf 100644
--- a/board/coachz/ec.tasklist
+++ b/board/coachz/ec.tasklist
@@ -9,6 +9,7 @@
 
 #define CONFIG_TASK_LIST \
 	TASK_ALWAYS(HOOKS, hook_task, NULL, ULTRA_TASK_STACK_SIZE) \
+	TASK_ALWAYS(PCHG, pchg_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_ALWAYS(USB_CHG_P0, usb_charger_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_ALWAYS(USB_CHG_P1, usb_charger_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_NOTEST(CHIPSET, chipset_task, NULL, ULTRA_TASK_STACK_SIZE) \
diff --git a/board/coachz/gpio.inc b/board/coachz/gpio.inc
index ec406b4fea..dc8eacdb26 100644
--- a/board/coachz/gpio.inc
+++ b/board/coachz/gpio.inc
@@ -28,6 +28,10 @@ GPIO_INT(AP_RST_L,          PIN(C, 1), GPIO_INT_BOTH | GPIO_SEL_1P8V, chipset_ap
 GPIO_INT(PS_HOLD,           PIN(A, 4), GPIO_INT_BOTH | GPIO_PULL_DOWN, power_signal_interrupt)  /* Indicate when AP triggers reset/shutdown */
 GPIO_INT(AP_SUSPEND,        PIN(5, 7), GPIO_INT_BOTH, power_signal_interrupt)  /* Suspend signal from PMIC */
 GPIO_INT(DEPRECATED_AP_RST_REQ, PIN(C, 2), GPIO_INT_BOTH | GPIO_PULL_DOWN | GPIO_SEL_1P8V, power_signal_interrupt) /* Deprecated AP initiated reset indicator */
+
+/* WLC interrupt */
+GPIO_INT(WLC_IRQ_CONN, PIN(7, 4), GPIO_INT_RISING, pchg_irq)
+
 /*
  * When switch-cap is off, the POWER_GOOD signal is floating. Need a pull-down
  * to make it low. Overload the interrupt function chipset_warm_reset_interrupt
@@ -72,7 +76,6 @@ GPIO(CAM_LED,               PIN(3, 0), GPIO_INPUT)
 
 /* Stylus */
 /* TODO(b/168652326): Implement the WLC controls */
-GPIO(WLC_IRQ_CONN,          PIN(7, 4), GPIO_INPUT)
 GPIO(WLC_NRST_CONN,         PIN(C, 5), GPIO_INPUT)
 
 /* Base detection */