linux-kernel - [PATCH 2/3] usb: typec: tcpci: Add get cc tcpci callback

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Date:   Fri, 15 Jul 2022 18:04:17 +0800
From:   Gene Chen <gene.chen.richtek@...il.com>
To:     linux@...ck-us.net, heikki.krogerus@...ux.intel.com,
        gregkh@...uxfoundation.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, gene_chen@...htek.com,
        cy_huang@...htek.com
Subject: [PATCH 2/3] usb: typec: tcpci: Add get cc tcpci callback

From: Gene Chen <gene_chen@...htek.com>

Add set_vbus tcpci callback for vendor IC workaround.
According to different rp level detected, set corresponding
rx dead zone threshold in order to decode right pd message.

Signed-off-by: Gene Chen <gene_chen@...htek.com>
---
 drivers/usb/typec/tcpm/tcpci.c | 3 +++
 drivers/usb/typec/tcpm/tcpci.h | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
index f33e08eb7670..fc2f6191b7d3 100644
--- a/drivers/usb/typec/tcpm/tcpci.c
+++ b/drivers/usb/typec/tcpm/tcpci.c
@@ -243,6 +243,9 @@ static int tcpci_get_cc(struct tcpc_dev *tcpc,
 	unsigned int reg, role_control;
 	int ret;
 
+	if (tcpci->data->get_cc)
+		return tcpci->data->get_cc(tcpci, tcpci->data, cc1, cc2);
+
 	ret = regmap_read(tcpci->regmap, TCPC_ROLE_CTRL, &role_control);
 	if (ret < 0)
 		return ret;
diff --git a/drivers/usb/typec/tcpm/tcpci.h b/drivers/usb/typec/tcpm/tcpci.h
index b2edd45f13c6..2cef19e131f8 100644
--- a/drivers/usb/typec/tcpm/tcpci.h
+++ b/drivers/usb/typec/tcpm/tcpci.h
@@ -190,6 +190,8 @@ struct tcpci_data {
 	unsigned char vbus_vsafe0v:1;
 
 	int (*init)(struct tcpci *tcpci, struct tcpci_data *data);
+	int (*get_cc)(struct tcpci *tcpci, struct tcpci_data *data,
+		      enum typec_cc_status *cc1, enum typec_cc_status *cc2);
 	int (*set_vconn)(struct tcpci *tcpci, struct tcpci_data *data,
 			 bool enable);
 	int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data,
-- 
2.25.1