common: Drop linux/delay.h from common header

[oweals/u-boot.git] / drivers / usb / host / dwc2.c

diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c
index 350d820a6e50b914e564ea180eb804628d327164..cefe9d83b1dc860f6616ac5e36ae5282c3b82f5f 100644 (file)
--- a/drivers/usb/host/dwc2.c
+++ b/drivers/usb/host/dwc2.c
@@ -5,15 +5,22 @@
  */
 
 #include <common.h>
+#include <clk.h>
+#include <cpu_func.h>
 #include <dm.h>
 #include <errno.h>
-#include <usb.h>
+#include <generic-phy.h>
+#include <log.h>
 #include <malloc.h>
 #include <memalign.h>
 #include <phys2bus.h>
+#include <usb.h>
 #include <usbroothubdes.h>
 #include <wait_bit.h>
+#include <asm/cache.h>
 #include <asm/io.h>
+#include <dm/device_compat.h>
+#include <linux/delay.h>
 #include <power/regulator.h>
 #include <reset.h>
 
@@ -35,6 +42,8 @@ struct dwc2_priv {
 #ifdef CONFIG_DM_REGULATOR
        struct udevice *vbus_supply;
 #endif
+       struct phy phy;
+       struct clk_bulk clks;
 #else
        uint8_t *aligned_buffer;
        uint8_t *status_buffer;
@@ -1145,6 +1154,8 @@ static int dwc2_reset(struct udevice *dev)
                        return ret;
        }
 
+       /* force reset to clear all IP register */
+       reset_assert_bulk(&priv->resets);
        ret = reset_deassert_bulk(&priv->resets);
        if (ret) {
                reset_release_bulk(&priv->resets);
@@ -1211,6 +1222,8 @@ static int dwc2_init_common(struct udevice *dev, struct dwc2_priv *priv)
        if (readl(&regs->gintsts) & DWC2_GINTSTS_CURMODE_HOST)
                mdelay(1000);
 
+       printf("USB DWC2\n");
+
        return 0;
 }
 
@@ -1320,13 +1333,95 @@ static int dwc2_usb_ofdata_to_platdata(struct udevice *dev)
        return 0;
 }
 
+static int dwc2_setup_phy(struct udevice *dev)
+{
+       struct dwc2_priv *priv = dev_get_priv(dev);
+       int ret;
+
+       ret = generic_phy_get_by_index(dev, 0, &priv->phy);
+       if (ret) {
+               if (ret == -ENOENT)
+                       return 0; /* no PHY, nothing to do */
+               dev_err(dev, "Failed to get USB PHY: %d.\n", ret);
+               return ret;
+       }
+
+       ret = generic_phy_init(&priv->phy);
+       if (ret) {
+               dev_dbg(dev, "Failed to init USB PHY: %d.\n", ret);
+               return ret;
+       }
+
+       ret = generic_phy_power_on(&priv->phy);
+       if (ret) {
+               dev_dbg(dev, "Failed to power on USB PHY: %d.\n", ret);
+               generic_phy_exit(&priv->phy);
+               return ret;
+       }
+
+       return 0;
+}
+
+static int dwc2_shutdown_phy(struct udevice *dev)
+{
+       struct dwc2_priv *priv = dev_get_priv(dev);
+       int ret;
+
+       /* PHY is not valid when generic_phy_get_by_index() = -ENOENT */
+       if (!generic_phy_valid(&priv->phy))
+               return 0; /* no PHY, nothing to do */
+
+       ret = generic_phy_power_off(&priv->phy);
+       if (ret) {
+               dev_dbg(dev, "Failed to power off USB PHY: %d.\n", ret);
+               return ret;
+       }
+
+       ret = generic_phy_exit(&priv->phy);
+       if (ret) {
+               dev_dbg(dev, "Failed to power off USB PHY: %d.\n", ret);
+               return ret;
+       }
+
+       return 0;
+}
+
+static int dwc2_clk_init(struct udevice *dev)
+{
+       struct dwc2_priv *priv = dev_get_priv(dev);
+       int ret;
+
+       ret = clk_get_bulk(dev, &priv->clks);
+       if (ret == -ENOSYS || ret == -ENOENT)
+               return 0;
+       if (ret)
+               return ret;
+
+       ret = clk_enable_bulk(&priv->clks);
+       if (ret) {
+               clk_release_bulk(&priv->clks);
+               return ret;
+       }
+
+       return 0;
+}
+
 static int dwc2_usb_probe(struct udevice *dev)
 {
        struct dwc2_priv *priv = dev_get_priv(dev);
        struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev);
+       int ret;
 
        bus_priv->desc_before_addr = true;
 
+       ret = dwc2_clk_init(dev);
+       if (ret)
+               return ret;
+
+       ret = dwc2_setup_phy(dev);
+       if (ret)
+               return ret;
+
        return dwc2_init_common(dev, priv);
 }
 
@@ -1339,9 +1434,17 @@ static int dwc2_usb_remove(struct udevice *dev)
        if (ret)
                return ret;
 
+       ret = dwc2_shutdown_phy(dev);
+       if (ret) {
+               dev_dbg(dev, "Failed to shutdown USB PHY: %d.\n", ret);
+               return ret;
+       }
+
        dwc2_uninit_common(priv->regs);
 
        reset_release_bulk(&priv->resets);
+       clk_disable_bulk(&priv->clks);
+       clk_release_bulk(&priv->clks);
 
        return 0;
 }