usb: host: nuvoton: Add nuvoton NPCM7xx ehci/ohci driver

Add nuvoton BMC NPCM750 ehci/ohci driver

Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index a0f48f09a7f3a7042459b1fa6b353986b323b74d..1aabe062fb34fc9d9625967d805a19cf581a3cb3 100644 (file)
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -214,6 +214,14 @@ config USB_EHCI_MXS
          Enables support for the on-chip EHCI controller on i.MX23 and
          i.MX28 SoCs.
 
+config USB_EHCI_NPCM
+       bool "Support for Nuvoton NPCM on-chip EHCI USB controller"
+       depends on ARCH_NPCM
+       default n
+       ---help---
+         Enables support for the on-chip EHCI controller on
+         Nuvoton NPCM chips.
+
 config USB_EHCI_OMAP
        bool "Support for OMAP3+ on-chip EHCI USB controller"
        depends on ARCH_OMAP2PLUS
@@ -343,6 +351,14 @@ config USB_OHCI_DA8XX
        help
          Enable support for the da850 USB controller.
 
+config USB_OHCI_NPCM
+       bool "Support for Nuvoton NPCM on-chip OHCI USB controller"
+       depends on ARCH_NPCM
+       default n
+       ---help---
+         Enables support for the on-chip OHCI controller on
+         Nuvoton NPCM chips.
+
 endif # USB_OHCI_HCD
 
 config SYS_USB_OHCI_SLOT_NAME

diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 5fdb8041167a6b81f1eea416854c04ab83e37b0d..ddc366320690060404e87fb45af0508f60b8d678 100644 (file)
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_USB_SL811HS) += sl811-hcd.o
 obj-$(CONFIG_USB_OHCI_LPC32XX) += ohci-lpc32xx.o
 obj-$(CONFIG_USB_OHCI_PCI) += ohci-pci.o
 obj-$(CONFIG_USB_OHCI_GENERIC) += ohci-generic.o
+obj-$(CONFIG_USB_OHCI_NPCM) += ohci-npcm.o
 
 # echi
 obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
@@ -34,6 +35,7 @@ obj-$(CONFIG_USB_EHCI_MXS) += ehci-mxs.o
 obj-$(CONFIG_USB_EHCI_MX5) += ehci-mx5.o
 obj-$(CONFIG_USB_EHCI_MX6) += ehci-mx6.o
 obj-$(CONFIG_USB_EHCI_MX7) += ehci-mx6.o
+obj-$(CONFIG_USB_EHCI_NPCM) += ehci-npcm.o
 obj-$(CONFIG_USB_EHCI_OMAP) += ehci-omap.o
 obj-$(CONFIG_USB_EHCI_MARVELL) += ehci-marvell.o
 obj-$(CONFIG_USB_EHCI_MSM) += ehci-msm.o

diff --git a/drivers/usb/host/ehci-npcm.c b/drivers/usb/host/ehci-npcm.c
new file mode 100644 (file)
index 0000000..357a561
--- /dev/null
+++ b/drivers/usb/host/ehci-npcm.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2021 Nuvoton Technology Corp.
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <generic-phy.h>
+#include <reset.h>
+#include <asm/io.h>
+#include <dm/device_compat.h>
+#include <linux/delay.h>
+#include "ehci.h"
+
+struct npcm_ehci_priv {
+       struct ehci_ctrl ctrl;
+       struct ehci_hccr *hcd;
+       struct phy phy;
+};
+
+static int npcm_ehci_setup_phy(struct udevice *dev, struct phy *phy)
+{
+       int ret;
+
+       if (!phy)
+               return 0;
+
+       ret = generic_phy_get_by_index(dev, 0, phy);
+       if (ret) {
+               if (ret != -ENOENT) {
+                       dev_err(dev, "failed to get usb phy\n");
+                       return ret;
+               }
+       } else {
+               ret = generic_phy_init(phy);
+               if (ret) {
+                       dev_err(dev, "failed to init usb phy\n");
+                       return ret;
+               }
+       }
+
+       return 0;
+}
+
+static int npcm_ehci_init(struct udevice *dev)
+{
+       struct npcm_ehci_priv *priv = dev_get_priv(dev);
+       struct reset_ctl reset;
+       int ret;
+
+       ret = reset_get_by_index(dev, 0, &reset);
+       if (ret && ret != -ENOENT && ret != -ENOTSUPP) {
+               dev_err(dev, "failed to get reset\n");
+               return ret;
+       }
+
+       /* reset controller */
+       if (reset_valid(&reset))
+               reset_assert(&reset);
+
+       /* setup phy */
+       ret = npcm_ehci_setup_phy(dev, &priv->phy);
+       if (ret)
+               return ret;
+
+       /* release controller from reset */
+       if (reset_valid(&reset))
+               reset_deassert(&reset);
+
+       return 0;
+}
+
+static int npcm_ehci_probe(struct udevice *dev)
+{
+       struct npcm_ehci_priv *priv = dev_get_priv(dev);
+       struct ehci_hcor *hcor;
+       enum usb_init_type type = dev_get_driver_data(dev);
+       int ret;
+
+       ret = npcm_ehci_init(dev);
+       if (ret)
+               return ret;
+
+       priv->hcd = (struct ehci_hccr *)dev_read_addr_ptr(dev);
+       debug("USB HCD @0x%p\n", priv->hcd);
+       hcor = (struct ehci_hcor *)((uintptr_t)priv->hcd +
+                       HC_LENGTH(ehci_readl(&priv->hcd->cr_capbase)));
+
+       return ehci_register(dev, priv->hcd, hcor, NULL, 0, type);
+}
+
+static int npcm_ehci_remove(struct udevice *dev)
+{
+       struct npcm_ehci_priv *priv = dev_get_priv(dev);
+
+       generic_phy_exit(&priv->phy);
+
+       return ehci_deregister(dev);
+}
+
+static const struct udevice_id npcm_ehci_ids[] = {
+       { .compatible = "nuvoton,npcm845-ehci", .data = USB_INIT_HOST },
+       { .compatible = "nuvoton,npcm845-udc", .data = USB_INIT_DEVICE },
+       { .compatible = "nuvoton,npcm750-ehci", .data = USB_INIT_HOST },
+       { .compatible = "nuvoton,npcm750-udc", .data = USB_INIT_DEVICE },
+       { }
+};
+
+U_BOOT_DRIVER(ehci_npcm) = {
+       .name   = "ehci_npcm",
+       .id     = UCLASS_USB,
+       .of_match = npcm_ehci_ids,
+       .probe = npcm_ehci_probe,
+       .remove = npcm_ehci_remove,
+       .ops    = &ehci_usb_ops,
+       .priv_auto = sizeof(struct npcm_ehci_priv),
+       .plat_auto = sizeof(struct usb_plat),
+       .flags  = DM_FLAG_ALLOC_PRIV_DMA,
+};

diff --git a/drivers/usb/host/ohci-npcm.c b/drivers/usb/host/ohci-npcm.c
new file mode 100644 (file)
index 0000000..9e1d529
--- /dev/null
+++ b/drivers/usb/host/ohci-npcm.c
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2021 Nuvoton Technology Corp.
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <generic-phy.h>
+#include <reset.h>
+#include <asm/io.h>
+#include <dm/device_compat.h>
+#include <linux/delay.h>
+#include "ohci.h"
+
+struct npcm_ohci_priv {
+       ohci_t ohci;
+       struct phy phy;
+};
+
+static int npcm_ohci_setup_phy(struct udevice *dev, struct phy *phy)
+{
+       int ret;
+
+       if (!phy)
+               return 0;
+
+       ret = generic_phy_get_by_index(dev, 0, phy);
+       if (ret) {
+               if (ret != -ENOENT) {
+                       dev_err(dev, "failed to get usb phy\n");
+                       return ret;
+               }
+       } else {
+               ret = generic_phy_init(phy);
+               if (ret) {
+                       dev_err(dev, "failed to init usb phy\n");
+                       return ret;
+               }
+       }
+
+       return 0;
+}
+
+static int npcm_ohci_init(struct udevice *dev)
+{
+       struct npcm_ohci_priv *priv = dev_get_priv(dev);
+       struct reset_ctl reset;
+       int ret;
+
+       ret = reset_get_by_index(dev, 0, &reset);
+       if (ret && ret != -ENOENT && ret != -ENOTSUPP) {
+               dev_err(dev, "failed to get reset\n");
+               return ret;
+       }
+
+       /* reset controller */
+       if (reset_valid(&reset))
+               reset_assert(&reset);
+
+       /* setup phy */
+       ret = npcm_ohci_setup_phy(dev, &priv->phy);
+       if (ret)
+               return ret;
+
+       /* release controller from reset */
+       if (reset_valid(&reset))
+               reset_deassert(&reset);
+
+       return 0;
+}
+
+static int npcm_ohci_probe(struct udevice *dev)
+{
+       struct ohci_regs *regs = dev_read_addr_ptr(dev);
+       int ret;
+
+       ret = npcm_ohci_init(dev);
+       if (ret)
+               return ret;
+
+       return ohci_register(dev, regs);
+}
+
+static int npcm_ohci_remove(struct udevice *dev)
+{
+       struct npcm_ohci_priv *priv = dev_get_priv(dev);
+
+       generic_phy_exit(&priv->phy);
+
+       return ohci_deregister(dev);
+}
+
+static const struct udevice_id npcm_ohci_ids[] = {
+       { .compatible = "nuvoton,npcm845-ohci" },
+       { .compatible = "nuvoton,npcm750-ohci" },
+       { }
+};
+
+U_BOOT_DRIVER(ohci_npcm) = {
+       .name   = "ohci_npcm",
+       .id     = UCLASS_USB,
+       .of_match = npcm_ohci_ids,
+       .probe = npcm_ohci_probe,
+       .remove = npcm_ohci_remove,
+       .ops    = &ohci_usb_ops,
+       .priv_auto = sizeof(struct npcm_ohci_priv),
+       .flags  = DM_FLAG_ALLOC_PRIV_DMA,
+};