usb: host: xhci-dwc3: Add generic PHY support

Add support of generic PHY framework support

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c
index 93ae986b4d789453d4d0c48e95821286d73af77b..374fe743fe3e34b67560041bb282fe8e9d349699 100644 (file)
--- a/drivers/usb/host/xhci-dwc3.c
+++ b/drivers/usb/host/xhci-dwc3.c
@@ -10,6 +10,8 @@
 
 #include <common.h>
 #include <dm.h>
+#include <fdtdec.h>
+#include <generic-phy.h>
 #include <usb.h>
 
 #include "xhci.h"
@@ -19,6 +21,10 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+struct xhci_dwc3_platdata {
+       struct phy usb_phy;
+};
+
 void dwc3_set_mode(struct dwc3 *dwc3_reg, u32 mode)
 {
        clrsetbits_le32(&dwc3_reg->g_ctl,
@@ -112,11 +118,26 @@ static int xhci_dwc3_probe(struct udevice *dev)
        struct xhci_hccr *hccr;
        struct dwc3 *dwc3_reg;
        enum usb_dr_mode dr_mode;
+       int ret;
 
        hccr = (struct xhci_hccr *)devfdt_get_addr(dev);
        hcor = (struct xhci_hcor *)((phys_addr_t)hccr +
                        HC_LENGTH(xhci_readl(&(hccr)->cr_capbase)));
 
+       ret = generic_phy_get_by_index(dev, 0, &plat->usb_phy);
+       if (ret) {
+               if (ret != -ENOENT) {
+                       error("Failed to get USB PHY for %s\n", dev->name);
+                       return ret;
+               }
+       } else {
+               ret = generic_phy_init(&plat->usb_phy);
+               if (ret) {
+                       error("Can't init USB PHY for %s\n", dev->name);
+                       return ret;
+               }
+       }
+
        dwc3_reg = (struct dwc3 *)((char *)(hccr) + DWC3_REG_OFFSET);
 
        dwc3_core_init(dwc3_reg);
@@ -133,6 +154,17 @@ static int xhci_dwc3_probe(struct udevice *dev)
 
 static int xhci_dwc3_remove(struct udevice *dev)
 {
+       struct xhci_dwc3_platdata *plat = dev_get_platdata(dev);
+       int ret;
+
+       if (generic_phy_valid(&plat->usb_phy)) {
+               ret = generic_phy_exit(&plat->usb_phy);
+               if (ret) {
+                       error("Can't deinit USB PHY for %s\n", dev->name);
+                       return ret;
+               }
+       }
+
        return xhci_deregister(dev);
 }