[PATCH v3 12/19] usb: dwc3: add rx_detect to polling lfps quirk

[Huang Rui]

This patch adds RX_DETECT to Polling.LFPS control quirk, and some special
platforms can configure that if it is needed.

Signed-off-by: Huang Rui <ray.hu...@amd.com>
---
 drivers/usb/dwc3/core.c          | 6 ++++++
 drivers/usb/dwc3/core.h          | 3 +++
 drivers/usb/dwc3/platform_data.h | 1 +
 3 files changed, 10 insertions(+)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 86ed064..19019dc 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -389,6 +389,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc)
        if (dwc->lfps_filter_quirk)
                reg |= DWC3_GUSB3PIPECTL_LFPSFILT;
 
+       if (dwc->rx_detect_poll_quirk)
+               reg |= DWC3_GUSB3PIPECTL_RX_DETOPOLL;
+
        dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
 
        mdelay(100);
@@ -771,6 +774,8 @@ static int dwc3_probe(struct platform_device *pdev)
                                "snps,del_phy_power_chg_quirk");
                dwc->lfps_filter_quirk = of_property_read_bool(node,
                                "snps,lfps_filter_quirk");
+               dwc->rx_detect_poll_quirk = of_property_read_bool(node,
+                               "snps,rx_detect_poll_quirk");
        } else if (pdata) {
                dwc->maximum_speed = pdata->maximum_speed;
                dwc->has_lpm_erratum = pdata->has_lpm_erratum;
@@ -787,6 +792,7 @@ static int dwc3_probe(struct platform_device *pdev)
                dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk;
                dwc->del_phy_power_chg_quirk = pdata->del_phy_power_chg_quirk;
                dwc->lfps_filter_quirk = pdata->lfps_filter_quirk;
+               dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk;
        }
 
        /* default to superspeed if no maximum_speed passed */
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 23b48a0..57a203a 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -184,6 +184,7 @@
 #define DWC3_GUSB3PIPECTL_DEPOCHANGE   (1 << 18)
 #define DWC3_GUSB3PIPECTL_SUSPHY       (1 << 17)
 #define DWC3_GUSB3PIPECTL_LFPSFILT     (1 << 9)
+#define DWC3_GUSB3PIPECTL_RX_DETOPOLL  (1 << 8)
 
 /* Global TX Fifo Size Register */
 #define DWC3_GTXFIFOSIZ_TXFDEF(n)      ((n) & 0xffff)
@@ -693,6 +694,7 @@ struct dwc3_scratchpad_array {
  * @del_p1p2p3_quirk: set if we enable delay p1p2p3 quirk
  * @del_phy_power_chg_quirk: set if we enable delay phy power change quirk
  * @lfps_filter_quirk: set if we enable LFPS filter quirk
+ * @rx_detect_poll_quirk: set if we enable rx_detect to polling lfps quirk
  */
 struct dwc3 {
        struct usb_ctrlrequest  *ctrl_req;
@@ -807,6 +809,7 @@ struct dwc3 {
        unsigned                del_p1p2p3_quirk:1;
        unsigned                del_phy_power_chg_quirk:1;
        unsigned                lfps_filter_quirk:1;
+       unsigned                rx_detect_poll_quirk:1;
 };
 
 /* -------------------------------------------------------------------------- 
*/
diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h
index 89918e5..9776764 100644
--- a/drivers/usb/dwc3/platform_data.h
+++ b/drivers/usb/dwc3/platform_data.h
@@ -34,4 +34,5 @@ struct dwc3_platform_data {
        unsigned del_p1p2p3_quirk:1;
        unsigned del_phy_power_chg_quirk:1;
        unsigned lfps_filter_quirk:1;
+       unsigned rx_detect_poll_quirk:1;
 };
-- 
1.9.1

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