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Date: Sat, 20 Apr 2024 10:19:00 +0530
From: Krishna Kurapati <quic_kriskura@...cinc.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Rob Herring
<robh@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
Wesley Cheng
<quic_wcheng@...cinc.com>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
"Greg
Kroah-Hartman" <gregkh@...uxfoundation.org>,
Conor Dooley
<conor+dt@...nel.org>,
Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
Felipe Balbi
<balbi@...nel.org>, Johan Hovold <johan@...nel.org>
CC: <devicetree@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<quic_ppratap@...cinc.com>, <quic_jackp@...cinc.com>,
Krishna Kurapati
<quic_kriskura@...cinc.com>,
Johan Hovold <johan+linaro@...nel.org>,
"Bjorn
Andersson" <quic_bjorande@...cinc.com>
Subject: [PATCH v21 8/9] usb: dwc3: qcom: Enable wakeup for applicable ports of multiport
DWC3 Qcom wrapper currently supports only wakeup configuration
for single port controllers. Read speed of each port connected
to the controller and enable wakeup for each of them accordingly.
Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
Reviewed-by: Johan Hovold <johan+linaro@...nel.org>
Reviewed-by: Bjorn Andersson <quic_bjorande@...cinc.com>
---
drivers/usb/dwc3/dwc3-qcom.c | 71 +++++++++++++++++++++---------------
1 file changed, 41 insertions(+), 30 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index 5ddb694dd8e7..b6f13bb14e2c 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -60,6 +60,7 @@ struct dwc3_qcom_port {
int dp_hs_phy_irq;
int dm_hs_phy_irq;
int ss_phy_irq;
+ enum usb_device_speed usb2_speed;
};
struct dwc3_qcom {
@@ -71,7 +72,6 @@ struct dwc3_qcom {
struct reset_control *resets;
struct dwc3_qcom_port ports[DWC3_QCOM_MAX_PORTS];
u8 num_ports;
- enum usb_device_speed usb2_speed;
struct extcon_dev *edev;
struct extcon_dev *host_edev;
@@ -310,7 +310,7 @@ static bool dwc3_qcom_is_host(struct dwc3_qcom *qcom)
return dwc->xhci;
}
-static enum usb_device_speed dwc3_qcom_read_usb2_speed(struct dwc3_qcom *qcom)
+static enum usb_device_speed dwc3_qcom_read_usb2_speed(struct dwc3_qcom *qcom, int port_index)
{
struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3);
struct usb_device *udev;
@@ -321,14 +321,8 @@ static enum usb_device_speed dwc3_qcom_read_usb2_speed(struct dwc3_qcom *qcom)
*/
hcd = platform_get_drvdata(dwc->xhci);
- /*
- * It is possible to query the speed of all children of
- * USB2.0 root hub via usb_hub_for_each_child(). DWC3 code
- * currently supports only 1 port per controller. So
- * this is sufficient.
- */
#ifdef CONFIG_USB
- udev = usb_hub_find_child(hcd->self.root_hub, 1);
+ udev = usb_hub_find_child(hcd->self.root_hub, port_index + 1);
#else
udev = NULL;
#endif
@@ -359,26 +353,26 @@ static void dwc3_qcom_disable_wakeup_irq(int irq)
disable_irq_nosync(irq);
}
-static void dwc3_qcom_disable_interrupts(struct dwc3_qcom *qcom)
+static void dwc3_qcom_disable_port_interrupts(struct dwc3_qcom_port *port)
{
- dwc3_qcom_disable_wakeup_irq(qcom->ports[0].qusb2_phy_irq);
+ dwc3_qcom_disable_wakeup_irq(port->qusb2_phy_irq);
- if (qcom->usb2_speed == USB_SPEED_LOW) {
- dwc3_qcom_disable_wakeup_irq(qcom->ports[0].dm_hs_phy_irq);
- } else if ((qcom->usb2_speed == USB_SPEED_HIGH) ||
- (qcom->usb2_speed == USB_SPEED_FULL)) {
- dwc3_qcom_disable_wakeup_irq(qcom->ports[0].dp_hs_phy_irq);
+ if (port->usb2_speed == USB_SPEED_LOW) {
+ dwc3_qcom_disable_wakeup_irq(port->dm_hs_phy_irq);
+ } else if ((port->usb2_speed == USB_SPEED_HIGH) ||
+ (port->usb2_speed == USB_SPEED_FULL)) {
+ dwc3_qcom_disable_wakeup_irq(port->dp_hs_phy_irq);
} else {
- dwc3_qcom_disable_wakeup_irq(qcom->ports[0].dp_hs_phy_irq);
- dwc3_qcom_disable_wakeup_irq(qcom->ports[0].dm_hs_phy_irq);
+ dwc3_qcom_disable_wakeup_irq(port->dp_hs_phy_irq);
+ dwc3_qcom_disable_wakeup_irq(port->dm_hs_phy_irq);
}
- dwc3_qcom_disable_wakeup_irq(qcom->ports[0].ss_phy_irq);
+ dwc3_qcom_disable_wakeup_irq(port->ss_phy_irq);
}
-static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom)
+static void dwc3_qcom_enable_port_interrupts(struct dwc3_qcom_port *port)
{
- dwc3_qcom_enable_wakeup_irq(qcom->ports[0].qusb2_phy_irq, 0);
+ dwc3_qcom_enable_wakeup_irq(port->qusb2_phy_irq, 0);
/*
* Configure DP/DM line interrupts based on the USB2 device attached to
@@ -389,21 +383,37 @@ static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom)
* DP and DM lines as rising edge to detect HS/HS/LS device connect scenario.
*/
- if (qcom->usb2_speed == USB_SPEED_LOW) {
- dwc3_qcom_enable_wakeup_irq(qcom->ports[0].dm_hs_phy_irq,
+ if (port->usb2_speed == USB_SPEED_LOW) {
+ dwc3_qcom_enable_wakeup_irq(port->dm_hs_phy_irq,
IRQ_TYPE_EDGE_FALLING);
- } else if ((qcom->usb2_speed == USB_SPEED_HIGH) ||
- (qcom->usb2_speed == USB_SPEED_FULL)) {
- dwc3_qcom_enable_wakeup_irq(qcom->ports[0].dp_hs_phy_irq,
+ } else if ((port->usb2_speed == USB_SPEED_HIGH) ||
+ (port->usb2_speed == USB_SPEED_FULL)) {
+ dwc3_qcom_enable_wakeup_irq(port->dp_hs_phy_irq,
IRQ_TYPE_EDGE_FALLING);
} else {
- dwc3_qcom_enable_wakeup_irq(qcom->ports[0].dp_hs_phy_irq,
+ dwc3_qcom_enable_wakeup_irq(port->dp_hs_phy_irq,
IRQ_TYPE_EDGE_RISING);
- dwc3_qcom_enable_wakeup_irq(qcom->ports[0].dm_hs_phy_irq,
+ dwc3_qcom_enable_wakeup_irq(port->dm_hs_phy_irq,
IRQ_TYPE_EDGE_RISING);
}
- dwc3_qcom_enable_wakeup_irq(qcom->ports[0].ss_phy_irq, 0);
+ dwc3_qcom_enable_wakeup_irq(port->ss_phy_irq, 0);
+}
+
+static void dwc3_qcom_disable_interrupts(struct dwc3_qcom *qcom)
+{
+ int i;
+
+ for (i = 0; i < qcom->num_ports; i++)
+ dwc3_qcom_disable_port_interrupts(&qcom->ports[i]);
+}
+
+static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom)
+{
+ int i;
+
+ for (i = 0; i < qcom->num_ports; i++)
+ dwc3_qcom_enable_port_interrupts(&qcom->ports[i]);
}
static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup)
@@ -430,7 +440,8 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup)
* freezable workqueue.
*/
if (dwc3_qcom_is_host(qcom) && wakeup) {
- qcom->usb2_speed = dwc3_qcom_read_usb2_speed(qcom);
+ for (i = 0; i < qcom->num_ports; i++)
+ qcom->ports[i].usb2_speed = dwc3_qcom_read_usb2_speed(qcom, i);
dwc3_qcom_enable_interrupts(qcom);
}
--
2.34.1
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