linux-kernel - [PATCH v8 11/12] platform/x86: intel_cht_int33fe: Add device connections for the Type-C port

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Date:   Wed, 14 Mar 2018 16:12:14 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans de Goede <hdegoede@...hat.com>
Cc:     Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Guenter Roeck <linux@...ck-us.net>, Jun Li <jun.li@....com>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: [PATCH v8 11/12] platform/x86: intel_cht_int33fe: Add device connections for the Type-C port

From: Hans de Goede <hdegoede@...hat.com>

We need to add device-connections for the Type-C mux/switch and usb-role
code to be able to find the PI3USB30532 Type-C cross-switch and the
device/host role-switch integrated in the CHT SoC.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
---
Changes in v4:
-Replace Andy's Acked-by with his Reviewed-by

Changes in v2:
-Add Andy's Acked-by
-Add Heikki's Reviewed-by
---
 drivers/platform/x86/intel_cht_int33fe.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/platform/x86/intel_cht_int33fe.c b/drivers/platform/x86/intel_cht_int33fe.c
index 380ef7ec094f..39d4100c60a2 100644
--- a/drivers/platform/x86/intel_cht_int33fe.c
+++ b/drivers/platform/x86/intel_cht_int33fe.c
@@ -33,6 +33,8 @@ struct cht_int33fe_data {
 	struct i2c_client *max17047;
 	struct i2c_client *fusb302;
 	struct i2c_client *pi3usb30532;
+	/* Contain a list-head must be per device */
+	struct device_connection connections[3];
 };
 
 /*
@@ -172,6 +174,20 @@ static int cht_int33fe_probe(struct i2c_client *client)
 			return -EPROBE_DEFER; /* Wait for i2c-adapter to load */
 	}
 
+	data->connections[0].endpoint[0] = "i2c-fusb302";
+	data->connections[0].endpoint[1] = "i2c-pi3usb30532";
+	data->connections[0].id = "typec-switch";
+	data->connections[1].endpoint[0] = "i2c-fusb302";
+	data->connections[1].endpoint[1] = "i2c-pi3usb30532";
+	data->connections[1].id = "typec-mux";
+	data->connections[2].endpoint[0] = "i2c-fusb302";
+	data->connections[2].endpoint[1] = "intel_xhci_usb_sw-role-switch";
+	data->connections[2].id = "usb-role-switch";
+
+	device_connection_add(&data->connections[0]);
+	device_connection_add(&data->connections[1]);
+	device_connection_add(&data->connections[2]);
+
 	memset(&board_info, 0, sizeof(board_info));
 	strlcpy(board_info.type, "typec_fusb302", I2C_NAME_SIZE);
 	board_info.dev_name = "fusb302";
@@ -201,6 +217,10 @@ static int cht_int33fe_probe(struct i2c_client *client)
 	if (data->max17047)
 		i2c_unregister_device(data->max17047);
 
+	device_connection_remove(&data->connections[2]);
+	device_connection_remove(&data->connections[1]);
+	device_connection_remove(&data->connections[0]);
+
 	return -EPROBE_DEFER; /* Wait for the i2c-adapter to load */
 }
 
@@ -213,6 +233,10 @@ static int cht_int33fe_remove(struct i2c_client *i2c)
 	if (data->max17047)
 		i2c_unregister_device(data->max17047);
 
+	device_connection_remove(&data->connections[2]);
+	device_connection_remove(&data->connections[1]);
+	device_connection_remove(&data->connections[0]);
+
 	return 0;
 }
 
-- 
2.16.1