usb: dwc3: core: add current_dr_role member

We're going to use this member to track which role we're currently
playing, that way we can more easily implement dual-role swap in
upcoming patches.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 56f136784cd387099bff3ca612be28089abd0eb9..68e6a7b6fd810d980f2652bc7bf52f61f9ad8321 100644 (file)
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -108,6 +108,8 @@ void dwc3_set_mode(struct dwc3 *dwc, u32 mode)
        reg &= ~(DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG));
        reg |= DWC3_GCTL_PRTCAPDIR(mode);
        dwc3_writel(dwc->regs, DWC3_GCTL, reg);
+
+       dwc->current_dr_role = mode;
 }
 
 u32 dwc3_core_fifo_space(struct dwc3_ep *dep, u8 type)

diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index d3b824912120b59df76fd6fc3aed51259b9c9314..3464dbfe153be83c83c4e562f93d803e3af21d85 100644 (file)
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -781,6 +781,7 @@ struct dwc3_scratchpad_array {
  * @maximum_speed: maximum speed requested (mainly for testing purposes)
  * @revision: revision register contents
  * @dr_mode: requested mode of operation
+ * @current_dr_role: current role of operation when in dual-role mode
  * @hsphy_mode: UTMI phy mode, one of following:
  *             - USBPHY_INTERFACE_MODE_UTMI
  *             - USBPHY_INTERFACE_MODE_UTMIW
@@ -891,6 +892,7 @@ struct dwc3 {
        size_t                  regs_size;
 
        enum usb_dr_mode        dr_mode;
+       u32                     current_dr_role;
        enum usb_phy_interface  hsphy_mode;
 
        u32                     fladj;