NXP (Freecale) imx HSIC design has some special requirements, add
some flags at host code to handle them.
Reviewed-by: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>
Tested-by: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>
Signed-off-by: Peter Chen <peter.chen@xxxxxxx>
---
drivers/usb/chipidea/host.c | 17 +++++++++++++++++
include/linux/usb/chipidea.h | 3 +++
2 files changed, 20 insertions(+)
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index d858a82c4f44..028a3574266a 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -170,6 +170,11 @@ static int host_start(struct ci_hdrc *ci)
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;
@@ -218,6 +223,8 @@ void ci_hdrc_host_destroy(struct ci_hdrc *ci)
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;
@@ -249,6 +256,16 @@ static int ci_ehci_bus_suspend(struct usb_hcd *hcd)
* 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;
}
}
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index 63758c399e4e..911e05af671e 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -60,9 +60,12 @@ struct ci_hdrc_platform_data {
#define CI_HDRC_OVERRIDE_RX_BURST BIT(11)
#define CI_HDRC_OVERRIDE_PHY_CONTROL BIT(12) /* Glue layer manages phy */
#define CI_HDRC_REQUIRES_ALIGNED_DMA BIT(13)
+#define CI_HDRC_IMX_IS_HSIC BIT(14)
enum usb_dr_mode dr_mode;
#define CI_HDRC_CONTROLLER_RESET_EVENT 0
#define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
+#define CI_HDRC_IMX_HSIC_ACTIVE_EVENT 2
+#define CI_HDRC_IMX_HSIC_SUSPEND_EVENT 3
int (*notify_event) (struct ci_hdrc *ci, unsigned event);
struct regulator *reg_vbus;
struct usb_otg_caps ci_otg_caps;
--
2.14.1
