linux-kernel - [PATCH v2 1/3] usb: roles: intel_xhci: Always allow user control

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Date:   Wed, 23 May 2018 17:37:56 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans de Goede <hdegoede@...hat.com>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: [PATCH v2 1/3] usb: roles: intel_xhci: Always allow user control

Trying to determine the USB port type with this mux is very
difficult. To simplify the situation, always allowing user
control, even if the port is USB Type-C port.

Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
---
 .../usb/roles/intel-xhci-usb-role-switch.c    | 21 +------------------
 1 file changed, 1 insertion(+), 20 deletions(-)

diff --git a/drivers/usb/roles/intel-xhci-usb-role-switch.c b/drivers/usb/roles/intel-xhci-usb-role-switch.c
index 30b07ea3a3c6..3f14153d753f 100644
--- a/drivers/usb/roles/intel-xhci-usb-role-switch.c
+++ b/drivers/usb/roles/intel-xhci-usb-role-switch.c
@@ -39,20 +39,6 @@ struct intel_xhci_usb_data {
 	void __iomem *base;
 };
 
-struct intel_xhci_acpi_match {
-	const char *hid;
-	int hrv;
-};
-
-/*
- * ACPI IDs for PMICs which do not support separate data and power role
- * detection (USB ACA detection for micro USB OTG), we allow userspace to
- * change the role manually on these.
- */
-static const struct intel_xhci_acpi_match allow_userspace_ctrl_ids[] = {
-	{ "INT33F4",  3 }, /* X-Powers AXP288 PMIC */
-};
-
 static int intel_xhci_usb_set_role(struct device *dev, enum usb_role role)
 {
 	struct intel_xhci_usb_data *data = dev_get_drvdata(dev);
@@ -139,6 +125,7 @@ static enum usb_role intel_xhci_usb_get_role(struct device *dev)
 static struct usb_role_switch_desc sw_desc = {
 	.set = intel_xhci_usb_set_role,
 	.get = intel_xhci_usb_get_role,
+	.allow_userspace_control = true,
 };
 
 static int intel_xhci_usb_probe(struct platform_device *pdev)
@@ -146,7 +133,6 @@ static int intel_xhci_usb_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct intel_xhci_usb_data *data;
 	struct resource *res;
-	int i;
 
 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
@@ -159,11 +145,6 @@ static int intel_xhci_usb_probe(struct platform_device *pdev)
 	if (!data->base)
 		return -ENOMEM;
 
-	for (i = 0; i < ARRAY_SIZE(allow_userspace_ctrl_ids); i++)
-		if (acpi_dev_present(allow_userspace_ctrl_ids[i].hid, "1",
-				     allow_userspace_ctrl_ids[i].hrv))
-			sw_desc.allow_userspace_control = true;
-
 	platform_set_drvdata(pdev, data);
 
 	data->role_sw = usb_role_switch_register(dev, &sw_desc);
-- 
2.17.0