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// SPDX-License-Identifier: GPL-2.0+
/*
* Sunxi ehci glue
*
* Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
* Copyright (C) 2014 Roman Byshko <rbyshko@gmail.com>
*
* Based on code from
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
*/
#include <common.h>
#include <asm/arch/clock.h>
#include <asm/io.h>
#include <dm.h>
#include "ehci.h"
#include <generic-phy.h>
#ifdef CONFIG_SUNXI_GEN_SUN4I
#define AHB_CLK_DIST 2
#else
#define AHB_CLK_DIST 1
#endif
struct ehci_sunxi_priv {
struct ehci_ctrl ehci;
struct sunxi_ccm_reg *ccm;
int ahb_gate_mask; /* Mask of ahb_gate0 clk gate bits for this hcd */
struct phy phy;
};
static int ehci_usb_probe(struct udevice *dev)
{
struct usb_platdata *plat = dev_get_platdata(dev);
struct ehci_sunxi_priv *priv = dev_get_priv(dev);
struct ehci_hccr *hccr = (struct ehci_hccr *)devfdt_get_addr(dev);
struct ehci_hcor *hcor;
int extra_ahb_gate_mask = 0;
int phys, ret;
priv->ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
if (IS_ERR(priv->ccm))
return PTR_ERR(priv->ccm);
phys = dev_count_phandle_with_args(dev, "phys", "#phy-cells");
if (phys < 0) {
phys = 0;
goto no_phy;
}
ret = generic_phy_get_by_name(dev, "usb", &priv->phy);
if (ret) {
pr_err("failed to get %s usb PHY\n", dev->name);
return ret;
}
ret = generic_phy_init(&priv->phy);
if (ret) {
pr_err("failed to init %s USB PHY\n", dev->name);
return ret;
}
ret = generic_phy_power_on(&priv->phy);
if (ret) {
pr_err("failed to power on %s USB PHY\n", dev->name);
return ret;
}
no_phy:
/*
* This should go away once we've moved to the driver model for
* clocks resp. phys.
*/
priv->ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0;
#if defined(CONFIG_MACH_SUNXI_H3_H5) || defined(CONFIG_MACH_SUN50I)
extra_ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_OHCI0;
#endif
priv->ahb_gate_mask <<= phys * AHB_CLK_DIST;
extra_ahb_gate_mask <<= phys * AHB_CLK_DIST;
setbits_le32(&priv->ccm->ahb_gate0,
priv->ahb_gate_mask | extra_ahb_gate_mask);
#ifdef CONFIG_SUNXI_GEN_SUN6I
setbits_le32(&priv->ccm->ahb_reset0_cfg,
priv->ahb_gate_mask | extra_ahb_gate_mask);
#endif
hcor = (struct ehci_hcor *)((uintptr_t)hccr +
HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
return ehci_register(dev, hccr, hcor, NULL, 0, plat->init_type);
}
static int ehci_usb_remove(struct udevice *dev)
{
struct ehci_sunxi_priv *priv = dev_get_priv(dev);
int ret;
if (generic_phy_valid(&priv->phy)) {
ret = generic_phy_exit(&priv->phy);
if (ret) {
pr_err("failed to exit %s USB PHY\n", dev->name);
return ret;
}
}
ret = ehci_deregister(dev);
if (ret)
return ret;
#ifdef CONFIG_SUNXI_GEN_SUN6I
clrbits_le32(&priv->ccm->ahb_reset0_cfg, priv->ahb_gate_mask);
#endif
clrbits_le32(&priv->ccm->ahb_gate0, priv->ahb_gate_mask);
return 0;
}
static const struct udevice_id ehci_usb_ids[] = {
{ .compatible = "allwinner,sun4i-a10-ehci", },
{ .compatible = "allwinner,sun5i-a13-ehci", },
{ .compatible = "allwinner,sun6i-a31-ehci", },
{ .compatible = "allwinner,sun7i-a20-ehci", },
{ .compatible = "allwinner,sun8i-a23-ehci", },
{ .compatible = "allwinner,sun8i-a83t-ehci", },
{ .compatible = "allwinner,sun8i-h3-ehci", },
{ .compatible = "allwinner,sun9i-a80-ehci", },
{ .compatible = "allwinner,sun50i-a64-ehci", },
{ }
};
U_BOOT_DRIVER(ehci_sunxi) = {
.name = "ehci_sunxi",
.id = UCLASS_USB,
.of_match = ehci_usb_ids,
.probe = ehci_usb_probe,
.remove = ehci_usb_remove,
.ops = &ehci_usb_ops,
.platdata_auto_alloc_size = sizeof(struct usb_platdata),
.priv_auto_alloc_size = sizeof(struct ehci_sunxi_priv),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
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