RAA489000: Add TCPC driver

The RAA489000 is both a charger and TCPC.  This commit adds the driver
for the TCPC portion.

BRANCH=none
BUG=b:147316570
TEST=builds

Change-Id: I797a3bf9a6cd15a23b6188e695c6d1abd3ce3980
Signed-off-by: Diana Z <dzigterman@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1991846
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>

3 files changed, 97 insertions, 0 deletions

diff --git a/driver/build.mk b/driver/build.mk
index 0f530dce78..1f754ec4ec 100644
--- a/driver/build.mk
+++ b/driver/build.mk
@@ -138,6 +138,7 @@ driver-$(CONFIG_USB_PD_TCPM_PS8751)+=tcpm/ps8xxx.o
 driver-$(CONFIG_USB_PD_TCPM_PS8805)+=tcpm/ps8xxx.o
 driver-$(CONFIG_USB_PD_TCPM_TUSB422)+=tcpm/tusb422.o
 driver-$(CONFIG_USB_PD_TCPM_NCT38XX)+=tcpm/nct38xx.o
+driver-$(CONFIG_USB_PD_TCPM_RAA489000)+=tcpm/raa489000.o
 
 # Type-C Retimer drivers
 driver-$(CONFIG_USBC_RETIMER_INTEL_BB)+=retimer/bb_retimer.o
diff --git a/driver/tcpm/raa489000.c b/driver/tcpm/raa489000.c
new file mode 100644
index 0000000000..30f6b768df
--- /dev/null
+++ b/driver/tcpm/raa489000.c
@@ -0,0 +1,57 @@
+/* Copyright 2020 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.
+ *
+ * Renesas RAA489000 TCPC driver
+ */
+
+#include "i2c.h"
+#include "raa489000.h"
+#include "tcpci.h"
+#include "tcpm.h"
+
+int raa489000_tcpm_set_cc(int port, int pull)
+{
+	int rv;
+
+	rv = tcpci_tcpm_set_cc(port, pull);
+	if (rv)
+		return rv;
+
+	/* TCPM should set RDOE to 1 after setting Rp */
+	if (pull == TYPEC_CC_RP)
+		rv = tcpc_update16(port, RAA489000_TYPEC_SETTING1,
+				   RAA489000_SETTING1_RDOE, MASK_SET);
+
+	return rv;
+}
+
+/* RAA489000 is a TCPCI compatible port controller */
+const struct tcpm_drv raa489000_tcpm_drv = {
+	.init                   = &tcpci_tcpm_init,
+	.release                = &tcpci_tcpm_release,
+	.get_cc                 = &tcpci_tcpm_get_cc,
+#ifdef CONFIG_USB_PD_VBUS_DETECT_TCPC
+	.get_vbus_level         = &tcpci_tcpm_get_vbus_level,
+#endif
+	.select_rp_value        = &tcpci_tcpm_select_rp_value,
+	.set_cc                 = &raa489000_tcpm_set_cc,
+	.set_polarity           = &tcpci_tcpm_set_polarity,
+	.set_vconn              = &tcpci_tcpm_set_vconn,
+	.set_msg_header         = &tcpci_tcpm_set_msg_header,
+	.set_rx_enable          = &tcpci_tcpm_set_rx_enable,
+	.get_message_raw        = &tcpci_tcpm_get_message_raw,
+	.transmit               = &tcpci_tcpm_transmit,
+	.tcpc_alert             = &tcpci_tcpc_alert,
+#ifdef CONFIG_USB_PD_DISCHARGE_TCPC
+	.tcpc_discharge_vbus    = &tcpci_tcpc_discharge_vbus,
+#endif
+#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
+	.drp_toggle             = &tcpci_tcpc_drp_toggle,
+#endif
+	.get_chip_info          = &tcpci_get_chip_info,
+#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
+	.enter_low_power_mode   = &tcpci_enter_low_power_mode,
+#endif
+};
+
diff --git a/driver/tcpm/raa489000.h b/driver/tcpm/raa489000.h
new file mode 100644
index 0000000000..1f6f875acb
--- /dev/null
+++ b/driver/tcpm/raa489000.h
@@ -0,0 +1,39 @@
+/* Copyright 2020 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.
+ *
+ * TCPC driver for Renesas RAA489000 Buck-boost charger with TCPC
+ */
+
+#ifndef __CROS_EC_USB_PD_TCPM_RAA489000_H
+#define __CROS_EC_USB_PD_TCPM_RAA489000_H
+
+#define RAA489000_TCPC0_I2C_FLAGS 0x22
+#define RAA489000_TCPC1_I2C_FLAGS 0x23
+#define RAA489000_TCPC2_I2C_FLAGS 0x24
+#define RAA489000_TCPC3_I2C_FLAGS 0x25
+
+/* Vendor registers */
+#define RAA489000_TYPEC_SETTING1	0xC0
+
+/* Enables for reverse current protection */
+#define RAA489000_SETTING1_IP2_EN	BIT(9)
+#define RAA489000_SETTING1_IP1_EN	BIT(8)
+
+/* Switches from dead-battery Rd */
+#define RAA489000_SETTING1_RDOE		BIT(7)
+
+/* CC comparator enables */
+#define RAA489000_SETTING1_CC2_CMP3_EN	BIT(6)
+#define RAA489000_SETTING1_CC2_CMP2_EN	BIT(5)
+#define RAA489000_SETTING1_CC2_CMP1_EN	BIT(4)
+#define RAA489000_SETTING1_CC1_CMP3_EN	BIT(3)
+#define RAA489000_SETTING1_CC1_CMP2_EN	BIT(2)
+#define RAA489000_SETTING1_CC1_CMP1_EN	BIT(1)
+
+/* CC debounce enable */
+#define RAA489000_SETTING1_CC_DB_EN	BIT(0)
+
+extern const struct tcpm_drv raa489000_tcpm_drv;
+
+#endif