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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (C) 2016 MediaTek Inc.
- *
- * Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
- */
- #include <common.h>
- #include <dm/lists.h>
- #include <linux/iopoll.h>
- #include "mtu3.h"
- #include "mtu3_dr.h"
- void ssusb_set_force_mode(struct ssusb_mtk *ssusb,
- enum mtu3_dr_force_mode mode)
- {
- u32 value;
- value = mtu3_readl(ssusb->ippc_base, SSUSB_U2_CTRL(0));
- switch (mode) {
- case MTU3_DR_FORCE_DEVICE:
- value |= SSUSB_U2_PORT_FORCE_IDDIG | SSUSB_U2_PORT_RG_IDDIG;
- break;
- case MTU3_DR_FORCE_HOST:
- value |= SSUSB_U2_PORT_FORCE_IDDIG;
- value &= ~SSUSB_U2_PORT_RG_IDDIG;
- break;
- case MTU3_DR_FORCE_NONE:
- value &= ~(SSUSB_U2_PORT_FORCE_IDDIG | SSUSB_U2_PORT_RG_IDDIG);
- break;
- default:
- return;
- }
- mtu3_writel(ssusb->ippc_base, SSUSB_U2_CTRL(0), value);
- }
- /* u2-port0 should be powered on and enabled; */
- int ssusb_check_clocks(struct ssusb_mtk *ssusb, u32 ex_clks)
- {
- void __iomem *ibase = ssusb->ippc_base;
- u32 value, check_val;
- int ret;
- check_val = ex_clks | SSUSB_SYS125_RST_B_STS | SSUSB_SYSPLL_STABLE |
- SSUSB_REF_RST_B_STS;
- ret = readl_poll_timeout(ibase + U3D_SSUSB_IP_PW_STS1, value,
- ((value & check_val) == check_val), 10000);
- if (ret) {
- dev_err(ssusb->dev, "clks of sts1 are not stable!\n");
- return ret;
- }
- ret = readl_poll_timeout(ibase + U3D_SSUSB_IP_PW_STS2, value,
- (value & SSUSB_U2_MAC_SYS_RST_B_STS), 10000);
- if (ret) {
- dev_err(ssusb->dev, "mac2 clock is not stable\n");
- return ret;
- }
- return 0;
- }
- int ssusb_phy_setup(struct ssusb_mtk *ssusb)
- {
- struct udevice *dev = ssusb->dev;
- struct phy_bulk *phys = &ssusb->phys;
- int ret;
- ret = generic_phy_get_bulk(dev, phys);
- if (ret)
- return ret;
- ret = generic_phy_init_bulk(phys);
- if (ret)
- return ret;
- ret = generic_phy_power_on_bulk(phys);
- if (ret)
- generic_phy_exit_bulk(phys);
- return ret;
- }
- void ssusb_phy_shutdown(struct ssusb_mtk *ssusb)
- {
- generic_phy_power_off_bulk(&ssusb->phys);
- generic_phy_exit_bulk(&ssusb->phys);
- }
- static int ssusb_rscs_init(struct ssusb_mtk *ssusb)
- {
- int ret = 0;
- ret = regulator_set_enable(ssusb->vusb33_supply, true);
- if (ret < 0 && ret != -ENOSYS) {
- dev_err(ssusb->dev, "failed to enable vusb33\n");
- goto vusb33_err;
- }
- ret = clk_enable_bulk(&ssusb->clks);
- if (ret)
- goto clks_err;
- ret = ssusb_phy_setup(ssusb);
- if (ret) {
- dev_err(ssusb->dev, "failed to setup phy\n");
- goto phy_err;
- }
- return 0;
- phy_err:
- clk_disable_bulk(&ssusb->clks);
- clks_err:
- regulator_set_enable(ssusb->vusb33_supply, false);
- vusb33_err:
- return ret;
- }
- static void ssusb_rscs_exit(struct ssusb_mtk *ssusb)
- {
- clk_disable_bulk(&ssusb->clks);
- regulator_set_enable(ssusb->vusb33_supply, false);
- ssusb_phy_shutdown(ssusb);
- }
- static void ssusb_ip_sw_reset(struct ssusb_mtk *ssusb)
- {
- /* reset whole ip (xhci & u3d) */
- mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);
- udelay(1);
- mtu3_clrbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);
- }
- static int get_ssusb_rscs(struct udevice *dev, struct ssusb_mtk *ssusb)
- {
- struct udevice *child;
- int ret;
- ret = device_get_supply_regulator(dev, "vusb33-supply",
- &ssusb->vusb33_supply);
- if (ret) /* optional, ignore error */
- dev_warn(dev, "can't get optional vusb33 %d\n", ret);
- ret = device_get_supply_regulator(dev, "vbus-supply",
- &ssusb->vbus_supply);
- if (ret) /* optional, ignore error */
- dev_warn(dev, "can't get optional vbus regulator %d!\n", ret);
- ret = clk_get_bulk(dev, &ssusb->clks);
- if (ret) {
- dev_err(dev, "failed to get clocks %d!\n", ret);
- return ret;
- }
- ssusb->ippc_base = devfdt_remap_addr_name(dev, "ippc");
- if (!ssusb->ippc_base) {
- dev_err(dev, "error mapping memory for ippc\n");
- return -ENODEV;
- }
- ret = device_find_first_child(dev, &child);
- if (ret || !child) {
- dev_err(dev, "failed to get child %d!\n", ret);
- return ret;
- }
- ssusb->mac_base = devfdt_remap_addr_name(child, "mac");
- if (!ssusb->mac_base) {
- dev_err(dev, "error mapping memory for mac\n");
- return -ENODEV;
- }
- ssusb->dr_mode = usb_get_dr_mode(dev_ofnode(child));
- if (ssusb->dr_mode == USB_DR_MODE_UNKNOWN ||
- ssusb->dr_mode == USB_DR_MODE_OTG)
- ssusb->dr_mode = USB_DR_MODE_PERIPHERAL;
- if (IS_ENABLED(CONFIG_USB_MTU3_GADGET))
- ssusb->dr_mode = USB_DR_MODE_PERIPHERAL;
- else if (IS_ENABLED(CONFIG_USB_MTU3_HOST))
- ssusb->dr_mode = USB_DR_MODE_HOST;
- dev_info(dev, "dr_mode: %d, ippc: 0x%p, mac: 0x%p\n",
- ssusb->dr_mode, ssusb->ippc_base, ssusb->mac_base);
- return 0;
- }
- static int mtu3_probe(struct udevice *dev)
- {
- struct ssusb_mtk *ssusb = dev_get_priv(dev);
- int ret = -ENOMEM;
- ssusb->dev = dev;
- ret = get_ssusb_rscs(dev, ssusb);
- if (ret)
- return ret;
- ret = ssusb_rscs_init(ssusb);
- if (ret)
- return ret;
- ssusb_ip_sw_reset(ssusb);
- return 0;
- }
- static int mtu3_remove(struct udevice *dev)
- {
- struct ssusb_mtk *ssusb = dev_to_ssusb(dev);
- ssusb_rscs_exit(ssusb);
- return 0;
- }
- static const struct udevice_id ssusb_of_match[] = {
- {.compatible = "mediatek,ssusb",},
- {},
- };
- #if CONFIG_IS_ENABLED(DM_USB_GADGET)
- int dm_usb_gadget_handle_interrupts(struct udevice *dev)
- {
- struct mtu3 *mtu = dev_get_priv(dev);
- mtu3_irq(0, mtu);
- return 0;
- }
- static int mtu3_gadget_probe(struct udevice *dev)
- {
- struct ssusb_mtk *ssusb = dev_to_ssusb(dev->parent);
- struct mtu3 *mtu = dev_get_priv(dev);
- mtu->dev = dev;
- ssusb->u3d = mtu;
- return ssusb_gadget_init(ssusb);
- }
- static int mtu3_gadget_remove(struct udevice *dev)
- {
- struct mtu3 *mtu = dev_get_priv(dev);
- ssusb_gadget_exit(mtu->ssusb);
- return 0;
- }
- U_BOOT_DRIVER(mtu3_peripheral) = {
- .name = "mtu3-peripheral",
- .id = UCLASS_USB_GADGET_GENERIC,
- .of_match = ssusb_of_match,
- .probe = mtu3_gadget_probe,
- .remove = mtu3_gadget_remove,
- .priv_auto = sizeof(struct mtu3),
- };
- #endif
- #if defined(CONFIG_SPL_USB_HOST) || \
- (!defined(CONFIG_SPL_BUILD) && defined(CONFIG_USB_HOST))
- static int mtu3_host_probe(struct udevice *dev)
- {
- struct ssusb_mtk *ssusb = dev_to_ssusb(dev->parent);
- struct mtu3_host *u3h = dev_get_priv(dev);
- struct xhci_hcor *hcor;
- int rc;
- u3h->dev = dev;
- ssusb->u3h = u3h;
- rc = ssusb_host_init(ssusb);
- if (rc)
- return rc;
- u3h->ctrl.quirks = XHCI_MTK_HOST;
- hcor = (struct xhci_hcor *)((uintptr_t)u3h->hcd +
- HC_LENGTH(xhci_readl(&u3h->hcd->cr_capbase)));
- return xhci_register(dev, u3h->hcd, hcor);
- }
- static int mtu3_host_remove(struct udevice *dev)
- {
- struct mtu3_host *u3h = dev_get_priv(dev);
- xhci_deregister(dev);
- ssusb_host_exit(u3h->ssusb);
- return 0;
- }
- U_BOOT_DRIVER(mtu3_host) = {
- .name = "mtu3-host",
- .id = UCLASS_USB,
- .of_match = ssusb_of_match,
- .probe = mtu3_host_probe,
- .remove = mtu3_host_remove,
- .priv_auto = sizeof(struct mtu3_host),
- .ops = &xhci_usb_ops,
- .flags = DM_FLAG_ALLOC_PRIV_DMA,
- };
- #endif
- static int mtu3_glue_bind(struct udevice *parent)
- {
- struct udevice *dev;
- enum usb_dr_mode dr_mode;
- const char *driver;
- const char *name;
- ofnode node;
- int ret;
- node = ofnode_by_compatible(dev_ofnode(parent), "mediatek,ssusb");
- if (!ofnode_valid(node))
- return -ENODEV;
- name = ofnode_get_name(node);
- dr_mode = usb_get_dr_mode(node);
- switch (dr_mode) {
- #if CONFIG_IS_ENABLED(DM_USB_GADGET)
- case USB_DR_MODE_PERIPHERAL:
- case USB_DR_MODE_OTG:
- dev_dbg(parent, "%s: dr_mode: peripheral\n", __func__);
- driver = "mtu3-peripheral";
- break;
- #endif
- #if defined(CONFIG_SPL_USB_HOST) || \
- (!defined(CONFIG_SPL_BUILD) && defined(CONFIG_USB_HOST))
- case USB_DR_MODE_HOST:
- dev_dbg(parent, "%s: dr_mode: host\n", __func__);
- driver = "mtu3-host";
- break;
- #endif
- default:
- dev_err(parent, "%s: unsupported dr_mode %d\n",
- __func__, dr_mode);
- return -ENODEV;
- };
- dev_dbg(parent, "%s: node name: %s, driver %s, dr_mode %d\n",
- __func__, name, driver, dr_mode);
- ret = device_bind_driver_to_node(parent, driver, name, node, &dev);
- if (ret)
- dev_err(parent, "%s: not able to bind usb device mode\n",
- __func__);
- return ret;
- }
- static const struct udevice_id mtu3_of_match[] = {
- {.compatible = "mediatek,mtu3",},
- {},
- };
- U_BOOT_DRIVER(mtu3) = {
- .name = "mtu3",
- .id = UCLASS_NOP,
- .of_match = mtu3_of_match,
- .bind = mtu3_glue_bind,
- .probe = mtu3_probe,
- .remove = mtu3_remove,
- .priv_auto = sizeof(struct ssusb_mtk),
- };
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