From: Sandeep Maheswaram <sanm@codeaurora.org>
To: Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
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,
linux-kernel@vger.kernel.org,
Manu Gautam <mgautam@codeaurora.org>,
Sandeep Maheswaram <sanm@codeaurora.org>
Subject: [PATCH v6 1/5] usb: dwc3: host: Add suspend_quirk for dwc3 host
Date: Fri, 16 Apr 2021 15:31:49 +0530 [thread overview]
Message-ID: <1618567313-25373-2-git-send-email-sanm@codeaurora.org> (raw)
In-Reply-To: <1618567313-25373-1-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 , phy_power_off flags and phy mode
during host suspend.
Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org>
---
drivers/usb/dwc3/core.h | 3 +++
drivers/usb/dwc3/host.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 62 insertions(+)
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 6e9abfb..f409dc1 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -1111,6 +1111,9 @@ struct dwc3 {
bool phys_ready;
+ unsigned int hs_phy_mode;
+ bool phy_power_off;
+
struct ulpi *ulpi;
bool ulpi_ready;
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index f29a264..527f04c 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -11,6 +11,14 @@
#include <linux/platform_device.h>
#include "core.h"
+#include "../host/xhci.h"
+#include "../host/xhci-plat.h"
+
+static 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 +123,13 @@ 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 +142,50 @@ 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 dwc3 *dwc = dev_get_drvdata(hcd->self.controller->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)
+{
+ struct dwc3 *dwc = dev_get_drvdata(hcd->self.controller->parent);
+
+ dwc3_set_phy_mode(hcd);
+
+ if (usb_wakeup_enabled_descendants(hcd->self.root_hub))
+ dwc->phy_power_off = false;
+ else
+ dwc->phy_power_off = true;
+
+ 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:[~2021-04-16 10:02 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-16 10:01 [PATCH v6 0/5] USB DWC3 host wake up support from system suspend Sandeep Maheswaram
2021-04-16 10:01 ` Sandeep Maheswaram [this message]
2021-04-19 20:53 ` [PATCH v6 1/5] usb: dwc3: host: Add suspend_quirk for dwc3 host Matthias Kaehlcke
2021-04-16 10:01 ` [PATCH v6 2/5] usb: dwc3: core: Host wake up support from system suspend Sandeep Maheswaram
2021-04-19 23:16 ` Matthias Kaehlcke
2021-04-16 10:01 ` [PATCH v6 3/5] usb: dwc3: qcom: Add helper functions to enable,disable wake irqs Sandeep Maheswaram
2021-04-19 19:37 ` Matthias Kaehlcke
2021-04-16 10:01 ` [PATCH v6 4/5] usb: dwc3: qcom: Configure wakeup interrupts during suspend Sandeep Maheswaram
2021-04-19 23:22 ` Matthias Kaehlcke
2021-04-16 10:01 ` [PATCH v6 5/5] usb: dwc3: qcom: Set genpd active wakeup flag for usb gdsc Sandeep Maheswaram
2021-04-20 0:12 ` Matthias Kaehlcke
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