[PATCH 08/10] usb: typec: Add support for usb role switch in rt1711h driver
From: Yu Chen <chenyu56@huawei.com>
Date: 2018-10-27 10:00:15
Also in:
linux-usb, lkml
Subsystem:
the rest, usb subsystem, usb typec class · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Heikki Krogerus
This patch add struct device_connection to rt1711h driver to support find "usb-role-switch" in tcpm_register_port. Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Lucas Tsai <redacted> Cc: shufan_lee <redacted> Cc: John Stultz <redacted> Cc: Binghui Wang <wangbinghui@hisilicon.com> Signed-off-by: Yu Chen <chenyu56@huawei.com> --- drivers/usb/typec/tcpm/tcpci_rt1711h.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/usb/typec/tcpm/tcpci_rt1711h.c b/drivers/usb/typec/tcpm/tcpci_rt1711h.c
index 017389021b96..5f8b952612fe 100644
--- a/drivers/usb/typec/tcpm/tcpci_rt1711h.c
+++ b/drivers/usb/typec/tcpm/tcpci_rt1711h.c@@ -39,6 +39,7 @@ struct rt1711h_chip { struct tcpci_data data; struct tcpci *tcpci; struct device *dev; + struct device_connection dev_conn; }; static int rt1711h_read16(struct rt1711h_chip *chip, unsigned int reg, u16 *val)
@@ -237,6 +238,7 @@ static int rt1711h_probe(struct i2c_client *client, { int ret; struct rt1711h_chip *chip; + const char *dev_conn_end; ret = rt1711h_check_revision(client); if (ret < 0) {
@@ -254,6 +256,7 @@ static int rt1711h_probe(struct i2c_client *client, return PTR_ERR(chip->data.regmap); chip->dev = &client->dev; + dev_set_name(chip->dev, "rt1711h"); i2c_set_clientdata(client, chip); ret = rt1711h_sw_reset(chip);
@@ -264,6 +267,15 @@ static int rt1711h_probe(struct i2c_client *client, if (ret < 0) return ret; + ret = device_property_read_string(chip->dev, "dev-conn-end", + &dev_conn_end); + if (!ret) { + chip->dev_conn.endpoint[0] = "rt1711h"; + chip->dev_conn.endpoint[1] = dev_conn_end; + chip->dev_conn.id = "usb-role-switch"; + device_connection_add(&chip->dev_conn); + } + chip->data.init = rt1711h_init; chip->data.set_vconn = rt1711h_set_vconn; chip->data.start_drp_toggling = rt1711h_start_drp_toggling;
@@ -279,6 +291,9 @@ static int rt1711h_remove(struct i2c_client *client) struct rt1711h_chip *chip = i2c_get_clientdata(client); tcpci_unregister_port(chip->tcpci); + if (chip->dev_conn.id) + device_connection_remove(&chip->dev_conn); + return 0; }
--
2.15.0-rc2