Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 4638d9b..b45ceb9 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -13,6 +13,7 @@
#include <linux/usb/hcd.h>
#include <linux/usb/chipidea.h>
#include <linux/regulator/consumer.h>
+#include <linux/pinctrl/consumer.h>
#include "../host/ehci.h"
@@ -153,6 +154,10 @@
}
}
+ if (ci->platdata->pins_host)
+ pinctrl_select_state(ci->platdata->pctl,
+ ci->platdata->pins_host);
+
ret = usb_add_hcd(hcd, 0, 0);
if (ret) {
goto disable_reg;
@@ -165,6 +170,11 @@
otg->host = &hcd->self;
hcd->self.otg_port = 1;
}
+
+ if (ci->platdata->notify_event &&
+ (ci->platdata->flags & CI_HDRC_IMX_IS_HSIC))
+ ci->platdata->notify_event
+ (ci, CI_HDRC_IMX_HSIC_ACTIVE_EVENT);
}
return ret;
@@ -197,6 +207,10 @@
}
ci->hcd = NULL;
ci->otg.host = NULL;
+
+ if (ci->platdata->pins_host && ci->platdata->pins_default)
+ pinctrl_select_state(ci->platdata->pctl,
+ ci->platdata->pins_default);
}
@@ -206,9 +220,85 @@
host_stop(ci);
}
+/* The below code is based on tegra ehci driver */
+static int ci_ehci_hub_control(
+ struct usb_hcd *hcd,
+ u16 typeReq,
+ u16 wValue,
+ u16 wIndex,
+ char *buf,
+ u16 wLength
+)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ u32 __iomem *status_reg;
+ u32 temp;
+ unsigned long flags;
+ int retval = 0;
+ struct device *dev = hcd->self.controller;
+ struct ci_hdrc *ci = dev_get_drvdata(dev);
+
+ status_reg = &ehci->regs->port_status[(wIndex & 0xff) - 1];
+
+ spin_lock_irqsave(&ehci->lock, flags);
+
+ if (typeReq == SetPortFeature && wValue == USB_PORT_FEAT_SUSPEND) {
+ temp = ehci_readl(ehci, status_reg);
+ if ((temp & PORT_PE) == 0 || (temp & PORT_RESET) != 0) {
+ retval = -EPIPE;
+ goto done;
+ }
+
+ temp &= ~(PORT_RWC_BITS | PORT_WKCONN_E);
+ temp |= PORT_WKDISC_E | PORT_WKOC_E;
+ ehci_writel(ehci, temp | PORT_SUSPEND, status_reg);
+
+ /*
+ * If a transaction is in progress, there may be a delay in
+ * suspending the port. Poll until the port is suspended.
+ */
+ if (ehci_handshake(ehci, status_reg, PORT_SUSPEND,
+ PORT_SUSPEND, 5000))
+ ehci_err(ehci, "timeout waiting for SUSPEND\n");
+
+ if (ci->platdata->flags & CI_HDRC_IMX_IS_HSIC) {
+ if (ci->platdata->notify_event)
+ ci->platdata->notify_event(ci,
+ CI_HDRC_IMX_HSIC_SUSPEND_EVENT);
+
+ temp = ehci_readl(ehci, status_reg);
+ temp &= ~(PORT_WKDISC_E | PORT_WKCONN_E);
+ ehci_writel(ehci, temp, status_reg);
+ }
+
+ set_bit((wIndex & 0xff) - 1, &ehci->suspended_ports);
+ goto done;
+ }
+
+ /*
+ * After resume has finished, it needs do some post resume
+ * operation for some SoCs.
+ */
+ else if (typeReq == ClearPortFeature &&
+ wValue == USB_PORT_FEAT_C_SUSPEND) {
+ /* Make sure the resume has finished, it should be finished */
+ if (ehci_handshake(ehci, status_reg, PORT_RESUME, 0, 25000))
+ ehci_err(ehci, "timeout waiting for resume\n");
+ }
+
+ spin_unlock_irqrestore(&ehci->lock, flags);
+
+ /* Handle the hub control events here */
+ return ehci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
+done:
+ spin_unlock_irqrestore(&ehci->lock, flags);
+ return retval;
+}
static int ci_ehci_bus_suspend(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ struct device *dev = hcd->self.controller;
+ struct ci_hdrc *ci = dev_get_drvdata(dev);
int port;
u32 tmp;
@@ -240,6 +330,16 @@
* It needs a short delay between set RS bit and PHCD.
*/
usleep_range(150, 200);
+ /*
+ * Need to clear WKCN and WKOC for imx HSIC,
+ * otherwise, there will be wakeup event.
+ */
+ if (ci->platdata->flags & CI_HDRC_IMX_IS_HSIC) {
+ tmp = ehci_readl(ehci, reg);
+ tmp &= ~(PORT_WKDISC_E | PORT_WKCONN_E);
+ ehci_writel(ehci, tmp, reg);
+ }
+
break;
}
}
@@ -272,4 +372,5 @@
ehci_init_driver(&ci_ehci_hc_driver, &ehci_ci_overrides);
orig_bus_suspend = ci_ehci_hc_driver.bus_suspend;
ci_ehci_hc_driver.bus_suspend = ci_ehci_bus_suspend;
+ ci_ehci_hc_driver.hub_control = ci_ehci_hub_control;
}