usb: dwc2: Add dwc2_core_reset()

dwc2_core_reset() was previously renamed to
dwc2_core_reset_and_dr_force_mode(). Now add back dwc2_core_reset() which
performs only a basic core reset without forcing the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c
index eb291c9e3c169e2d55c71e025b8ff940aabffb01..15f359fe76d3b67cc0ca920e5e966a74fc0bc7e5 100644 (file)
--- a/drivers/usb/dwc2/core.c
+++ b/drivers/usb/dwc2/core.c
@@ -481,11 +481,10 @@ static void dwc2_init_fs_ls_pclk_sel(struct dwc2_hsotg *hsotg)
  * Do core a soft reset of the core.  Be careful with this because it
  * resets all the internal state machines of the core.
  */
-int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg)
+int dwc2_core_reset(struct dwc2_hsotg *hsotg)
 {
        u32 greset;
        int count = 0;
-       u32 gusbcfg;
 
        dev_vdbg(hsotg->dev, "%s()\n", __func__);
 
@@ -517,6 +516,25 @@ int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg)
                }
        } while (!(greset & GRSTCTL_AHBIDLE));
 
+       return 0;
+}
+
+/*
+ * Do core a soft reset of the core.  Be careful with this because it
+ * resets all the internal state machines of the core.
+ *
+ * Additionally this will apply force mode as per the hsotg->dr_mode
+ * parameter.
+ */
+int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg)
+{
+       int retval;
+       u32 gusbcfg;
+
+       retval = dwc2_core_reset(hsotg);
+       if (retval)
+               return retval;
+
        if (hsotg->dr_mode == USB_DR_MODE_HOST) {
                gusbcfg = dwc2_readl(hsotg->regs + GUSBCFG);
                gusbcfg &= ~GUSBCFG_FORCEDEVMODE;

diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index d1989c68c728a6418a45f986665db8e3ee1425b5..15e27bb509b5b23779939ce0ccb8062c7a626a47 100644 (file)
--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
@@ -880,6 +880,7 @@ enum dwc2_halt_status {
  * The following functions support initialization of the core driver component
  * and the DWC_otg controller
  */
+extern int dwc2_core_reset(struct dwc2_hsotg *hsotg);
 extern int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg);
 extern void dwc2_core_host_init(struct dwc2_hsotg *hsotg);
 extern int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg);