From: Sandeep Maheswaram <sanm@codeaurora.org>
To: Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Felipe Balbi <balbi@kernel.org>,
Stephen Boyd <swboyd@chromium.org>,
Doug Anderson <dianders@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>
Cc: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Manu Gautam <mgautam@codeaurora.org>,
Sandeep Maheswaram <sanm@codeaurora.org>
Subject: [PATCH v4 2/5] usb: dwc3: host: Add suspend_quirk for dwc3 host
Date: Wed, 28 Oct 2020 02:08:00 +0530 [thread overview]
Message-ID: <1603831083-2025-3-git-send-email-sanm@codeaurora.org> (raw)
In-Reply-To: <1603831083-2025-1-git-send-email-sanm@codeaurora.org>
Adding suspend quirk function for dwc3 host which will be called
during xhci suspend.
Setting hs_phy_mode, ss_phy_mode flags and phy mode during host suspend.
Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org>
---
drivers/usb/dwc3/host.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index e195176..db03db8 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -11,6 +11,13 @@
#include <linux/platform_device.h>
#include "core.h"
+#include "../host/xhci.h"
+#include "../host/xhci-plat.h"
+int xhci_dwc3_suspend_quirk(struct usb_hcd *hcd);
+
+static const struct xhci_plat_priv xhci_plat_dwc3_xhci = {
+ .suspend_quirk = xhci_dwc3_suspend_quirk,
+};
static int dwc3_host_get_irq(struct dwc3 *dwc)
{
@@ -115,6 +122,13 @@ int dwc3_host_init(struct dwc3 *dwc)
}
}
+ ret = platform_device_add_data(xhci, &xhci_plat_dwc3_xhci,
+ sizeof(struct xhci_plat_priv));
+ if (ret) {
+ dev_err(dwc->dev, "failed to add data to xHCI\n");
+ goto err;
+ }
+
ret = platform_device_add(xhci);
if (ret) {
dev_err(dwc->dev, "failed to register xHCI device\n");
@@ -127,6 +141,43 @@ int dwc3_host_init(struct dwc3 *dwc)
return ret;
}
+static void dwc3_set_phy_mode(struct usb_hcd *hcd)
+{
+
+ int i, num_ports;
+ u32 reg;
+ unsigned int ss_phy_mode = 0;
+ struct device *dev = hcd->self.controller;
+ struct dwc3 *dwc = dev_get_drvdata(dev->parent);
+ struct xhci_hcd *xhci_hcd = hcd_to_xhci(hcd);
+
+ dwc->hs_phy_mode = 0;
+
+ reg = readl(&xhci_hcd->cap_regs->hcs_params1);
+
+ num_ports = HCS_MAX_PORTS(reg);
+ for (i = 0; i < num_ports; i++) {
+ reg = readl(&xhci_hcd->op_regs->port_status_base + i * 0x04);
+ if (reg & PORT_PE) {
+ if (DEV_HIGHSPEED(reg) || DEV_FULLSPEED(reg))
+ dwc->hs_phy_mode |= PHY_MODE_USB_HOST_HS;
+ else if (DEV_LOWSPEED(reg))
+ dwc->hs_phy_mode |= PHY_MODE_USB_HOST_LS;
+
+ if (DEV_SUPERSPEED(reg))
+ ss_phy_mode |= PHY_MODE_USB_HOST_SS;
+ }
+ }
+ phy_set_mode(dwc->usb2_generic_phy, dwc->hs_phy_mode);
+ phy_set_mode(dwc->usb3_generic_phy, ss_phy_mode);
+}
+
+int xhci_dwc3_suspend_quirk(struct usb_hcd *hcd)
+{
+ dwc3_set_phy_mode(hcd);
+ return 0;
+}
+
void dwc3_host_exit(struct dwc3 *dwc)
{
platform_device_unregister(dwc->xhci);
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2020-10-27 20:38 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-27 20:37 [PATCH v4 0/5] USB DWC3 host wake up support from system suspend Sandeep Maheswaram
2020-10-27 20:37 ` [PATCH v4 1/5] usb: dwc3: core: Host " Sandeep Maheswaram
2020-11-28 2:31 ` mgautam
2020-12-11 0:04 ` Matthias Kaehlcke
2020-10-27 20:38 ` Sandeep Maheswaram [this message]
2020-12-11 0:25 ` [PATCH v4 2/5] usb: dwc3: host: Add suspend_quirk for dwc3 host Matthias Kaehlcke
2020-10-27 20:38 ` [PATCH v4 3/5] usb: dwc3: qcom: Configure wakeup interrupts and set genpd active wakeup flag Sandeep Maheswaram
2020-12-11 0:47 ` Matthias Kaehlcke
2020-10-27 20:38 ` [PATCH v4 4/5] arm64: dts: qcom: sc7180: Use pdc interrupts for USB instead of GIC interrupts Sandeep Maheswaram
2021-02-25 18:15 ` Doug Anderson
2020-10-27 20:38 ` [PATCH v4 5/5] arm64: dts: qcom: sc7180: Add wakeup-source property for USB node in IDP and trogdor Sandeep Maheswaram
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