>
>cdns3 has some special PM sequence between xhci_bus_suspend and
>xhci_suspend, add quirk to implement it.
>
>Signed-off-by: Peter Chen <peter.chen@xxxxxxx>
>---
> drivers/usb/cdns3/host-export.h | 6 +++++
> drivers/usb/cdns3/host.c | 40 +++++++++++++++++++++++++++++++++
> 2 files changed, 46 insertions(+)
>
>diff --git a/drivers/usb/cdns3/host-export.h b/drivers/usb/cdns3/host-export.h
>index ae11810f8826..26041718a086 100644
>--- a/drivers/usb/cdns3/host-export.h
>+++ b/drivers/usb/cdns3/host-export.h
>@@ -9,9 +9,11 @@
> #ifndef __LINUX_CDNS3_HOST_EXPORT
> #define __LINUX_CDNS3_HOST_EXPORT
>
>+struct usb_hcd;
> #ifdef CONFIG_USB_CDNS3_HOST
>
> int cdns3_host_init(struct cdns3 *cdns);
>+int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd);
>
> #else
>
>@@ -21,6 +23,10 @@ static inline int cdns3_host_init(struct cdns3 *cdns)
> }
>
> static inline void cdns3_host_exit(struct cdns3 *cdns) { }
>+static inline int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
>+{
>+ return 0;
>+}
>
> #endif /* CONFIG_USB_CDNS3_HOST */
>
>diff --git a/drivers/usb/cdns3/host.c b/drivers/usb/cdns3/host.c
>index b579ef15f4e0..030d6421abd3 100644
>--- a/drivers/usb/cdns3/host.c
>+++ b/drivers/usb/cdns3/host.c
>@@ -14,6 +14,18 @@
> #include "drd.h"
> #include "host-export.h"
> #include <linux/usb/hcd.h>
>+#include "../host/xhci.h"
>+#include "../host/xhci-plat.h"
>+
>+#define XECP_PORT_CAP_REG 0x8000
>+#define XECP_AUX_CTRL_REG1 0x8120
>+
>+#define CFG_RXDET_P3_EN (1 << 15)
>+#define LPM_2_STB_SWITCH_EN (1 << 25)
>+
Please use BIT(15) and BIT(25)
Reviewed-by: Pawel Laszczak <pawell@xxxxxxxxxxx>
Regards
Pawel
>+static const struct xhci_plat_priv xhci_plat_cdns3_xhci = {
>+ .suspend_quirk = xhci_cdns3_suspend_quirk,
>+};
>
> static int __cdns3_host_init(struct cdns3 *cdns)
> {
>@@ -39,6 +51,11 @@ static int __cdns3_host_init(struct cdns3 *cdns)
> goto err1;
> }
>
>+ ret = platform_device_add_data(xhci, &xhci_plat_cdns3_xhci,
>+ sizeof(struct xhci_plat_priv));
>+ if (ret)
>+ goto err1;
>+
> ret = platform_device_add(xhci);
> if (ret) {
> dev_err(cdns->dev, "failed to register xHCI device\n");
>@@ -56,6 +73,29 @@ static int __cdns3_host_init(struct cdns3 *cdns)
> return ret;
> }
>
>+int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
>+{
>+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
>+ u32 value;
>+
>+ /* set usbcmd.EU3S */
>+ value = readl(&xhci->op_regs->command);
>+ value |= CMD_PM_INDEX;
>+ writel(value, &xhci->op_regs->command);
>+
>+ if (hcd->regs) {
>+ value = readl(hcd->regs + XECP_AUX_CTRL_REG1);
>+ value |= CFG_RXDET_P3_EN;
>+ writel(value, hcd->regs + XECP_AUX_CTRL_REG1);
>+
>+ value = readl(hcd->regs + XECP_PORT_CAP_REG);
>+ value |= LPM_2_STB_SWITCH_EN;
>+ writel(value, hcd->regs + XECP_PORT_CAP_REG);
>+ }
>+
>+ return 0;
>+}
>+
> static void cdns3_host_exit(struct cdns3 *cdns)
> {
> platform_device_unregister(cdns->host_dev);
>--
>2.17.1
