linux-kernel - [PATCH v7 09/18] usb: dwc3: qcom: Add support for usb-conn-gpio connectors

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Date:   Tue,  3 Mar 2020 17:11:50 +0000
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        gregkh@...uxfoundation.org, jackp@...eaurora.org, balbi@...nel.org,
        bjorn.andersson@...aro.org, robh@...nel.org
Cc:     linux-kernel@...r.kernel.org,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
Subject: [PATCH v7 09/18] usb: dwc3: qcom: Add support for usb-conn-gpio connectors

This patch adds a routine to find a usb-conn-gpio in the main DWC3 code.
This will be useful in a subsequent patch where we will reuse the current
extcon VBUS notifier with usb-conn-gpio.

Cc: Andy Gross <agross@...nel.org>
Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
Cc: Lee Jones <lee.jones@...aro.org>
Cc: Felipe Balbi <balbi@...nel.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-arm-msm@...r.kernel.org
Cc: linux-usb@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Acked-by: Felipe Balbi <balbi@...nel.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
---
 drivers/usb/dwc3/dwc3-qcom.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index 1dfd024cd06b..6f4b2b3cffce 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -550,6 +550,21 @@ static const struct dwc3_acpi_pdata sdm845_acpi_pdata = {
 	.ss_phy_irq_index = 2
 };
 
+static bool dwc3_qcom_find_gpio_usb_connector(struct platform_device *pdev)
+{
+	struct device_node	*np;
+	bool			retval = false;
+
+	np = of_get_child_by_name(pdev->dev.of_node, "connector");
+	if (np) {
+		if (of_device_is_compatible(np, "gpio-usb-b-connector"))
+			retval = true;
+	}
+	of_node_put(np);
+
+	return retval;
+}
+
 static int dwc3_qcom_probe(struct platform_device *pdev)
 {
 	struct device_node	*np = pdev->dev.of_node;
-- 
2.25.1