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Subject[PATCH v10 10/15] usb: typec: tcpci: frs sourcing vbus callback
From
During FRS hardware autonomously starts to source vbus. Provide
callback to perform chip specific operations.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
---
v9 is the first version of this patch in the series. Added to fix
occasional bug of vbus turning back on when disconnecting the FRS accessory
after disconnect. No changes since v9.
---
drivers/usb/typec/tcpm/tcpci.c | 9 +++++++++
drivers/usb/typec/tcpm/tcpci.h | 4 ++++
2 files changed, 13 insertions(+)

diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
index f9f0af64da5f..f91688e43991 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 5ef07a56d67a..b418fe11b527 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);
--
2.28.0.806.g8561365e88-goog
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