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

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Date:   Fri, 16 Feb 2018 11:43:20 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Tejun Heo <tj@...nel.org>
Cc:     Hans de Goede <hdegoede@...hat.com>, linux-ide@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 11/12] platform/x86: intel_cht_int33fe: Add device connections for the Type-C port

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 switch integrated in the CHT SoC.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
 drivers/platform/x86/intel_cht_int33fe.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/platform/x86/intel_cht_int33fe.c b/drivers/platform/x86/intel_cht_int33fe.c
index 380ef7ec094f..a3f8674f14da 100644
--- a/drivers/platform/x86/intel_cht_int33fe.c
+++ b/drivers/platform/x86/intel_cht_int33fe.c
@@ -21,6 +21,7 @@
  */
 
 #include <linux/acpi.h>
+#include <linux/connection.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
@@ -33,6 +34,8 @@ 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 devcon connections[3];
 };
 
 /*
@@ -172,6 +175,20 @@ 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";
+
+	add_device_connection(&data->connections[0]);
+	add_device_connection(&data->connections[1]);
+	add_device_connection(&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 +218,10 @@ static int cht_int33fe_probe(struct i2c_client *client)
 	if (data->max17047)
 		i2c_unregister_device(data->max17047);
 
+	remove_device_connection(&data->connections[2]);
+	remove_device_connection(&data->connections[1]);
+	remove_device_connection(&data->connections[0]);
+
 	return -EPROBE_DEFER; /* Wait for the i2c-adapter to load */
 }
 
@@ -213,6 +234,10 @@ static int cht_int33fe_remove(struct i2c_client *i2c)
 	if (data->max17047)
 		i2c_unregister_device(data->max17047);
 
+	remove_device_connection(&data->connections[2]);
+	remove_device_connection(&data->connections[1]);
+	remove_device_connection(&data->connections[0]);
+
 	return 0;
 }
 
-- 
2.14.3