blob: b1b22b9357cef0211f79091899249f7ff599e372 [file] [log] [blame]
// 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),
};