[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20200207201654.641525-13-bryan.odonoghue@linaro.org>
Date: Fri, 7 Feb 2020 20:16:48 +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 v5 12/18] usb: dwc3: qcom: Enable gpio-usb-conn based role-switching
This patch adds the ability to receive a notification from the DRD code for
role-switch events in doing so it introduces a disjunction between
gpio-usb-conn or extcon mode.
This is what we want to do, since the two methods are mutually exclusive.
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: Jack Pham <jackp@...eaurora.org>
Cc: linux-arm-msm@...r.kernel.org
Cc: linux-usb@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
---
drivers/usb/dwc3/dwc3-qcom.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index fc66ca3316ef..48e43dbc88cf 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -571,6 +571,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct dwc3_qcom *qcom;
struct resource *res, *parent_res = NULL;
+ struct dwc3 *dwc;
int ret, i;
bool ignore_pipe_clk;
@@ -669,8 +670,16 @@ static int dwc3_qcom_probe(struct platform_device *pdev)
if (qcom->mode == USB_DR_MODE_PERIPHERAL)
dwc3_qcom_vbus_overrride_enable(qcom, true);
- /* register extcon to override sw_vbus on Vbus change later */
- ret = dwc3_qcom_register_extcon(qcom);
+ if (dwc3_qcom_find_gpio_usb_connector(qcom->dwc3)) {
+ /* Using gpio-usb-conn register a notifier for VBUS */
+ dwc = platform_get_drvdata(qcom->dwc3);
+ qcom->vbus_nb.notifier_call = dwc3_qcom_vbus_notifier;
+ ret = dwc3_role_switch_notifier_register(dwc, &qcom->vbus_nb);
+ } else {
+ /* register extcon to override sw_vbus on Vbus change later */
+ ret = dwc3_qcom_register_extcon(qcom);
+ }
+
if (ret)
goto depopulate;
@@ -702,8 +711,11 @@ static int dwc3_qcom_remove(struct platform_device *pdev)
{
struct dwc3_qcom *qcom = platform_get_drvdata(pdev);
struct device *dev = &pdev->dev;
+ struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3);
int i;
+ dwc3_role_switch_notifier_unregister(dwc, &qcom->vbus_nb);
+
of_platform_depopulate(dev);
for (i = qcom->num_clocks - 1; i >= 0; i--) {
--
2.25.0
Powered by blists - more mailing lists