From: Badhri Jagan Sridharan <badhri@google.com>
Date: Thu, 29 Oct 2020 06:31:33 +0000 (-0700)
Subject: usb: typec: tcpci: frs sourcing vbus callback
X-Git-Tag: accepted/tizen/unified/20230118.172025~8319^2~73
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a57d253fc0582d223464705a5103cfb1930a06cd;p=platform%2Fkernel%2Flinux-rpi.git

usb: typec: tcpci: frs sourcing vbus callback

During FRS hardware autonomously starts to source vbus. Provide
callback to perform chip specific operations.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20201029063138.1429760-6-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
index f9f0af6..f91688e 100644
--- a/drivers/usb/typec/tcpm/tcpci.c
+++ b/drivers/usb/typec/tcpm/tcpci.c
@@ -284,6 +284,14 @@ static int tcpci_enable_frs(struct tcpc_dev *dev, bool enable)
 	return ret;
 }
 
+static void tcpci_frs_sourcing_vbus(struct tcpc_dev *dev)
+{
+	struct tcpci *tcpci = tcpc_to_tcpci(dev);
+
+	if (tcpci->data->frs_sourcing_vbus)
+		tcpci->data->frs_sourcing_vbus(tcpci, tcpci->data);
+}
+
 static int tcpci_set_bist_data(struct tcpc_dev *tcpc, bool enable)
 {
 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
@@ -628,6 +636,7 @@ struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data)
 	tcpci->tcpc.pd_transmit = tcpci_pd_transmit;
 	tcpci->tcpc.set_bist_data = tcpci_set_bist_data;
 	tcpci->tcpc.enable_frs = tcpci_enable_frs;
+	tcpci->tcpc.frs_sourcing_vbus = tcpci_frs_sourcing_vbus;
 
 	err = tcpci_parse_config(tcpci);
 	if (err < 0)
diff --git a/drivers/usb/typec/tcpm/tcpci.h b/drivers/usb/typec/tcpm/tcpci.h
index 5ef07a5..b418fe1 100644
--- a/drivers/usb/typec/tcpm/tcpci.h
+++ b/drivers/usb/typec/tcpm/tcpci.h
@@ -143,6 +143,9 @@
 /*
  * @TX_BUF_BYTE_x_hidden
  *		optional; Set when TX_BUF_BYTE_x can only be accessed through I2C_WRITE_BYTE_COUNT.
+ * @frs_sourcing_vbus:
+ *		Optional; Callback to perform chip specific operations when FRS
+ *		is sourcing vbus.
  */
 struct tcpci;
 struct tcpci_data {
@@ -154,6 +157,7 @@ struct tcpci_data {
 	int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data,
 				  enum typec_cc_status cc);
 	int (*set_vbus)(struct tcpci *tcpci, struct tcpci_data *data, bool source, bool sink);
+	void (*frs_sourcing_vbus)(struct tcpci *tcpci, struct tcpci_data *data);
 };
 
 struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data);