/*
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* Sunxi ehci glue
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*
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* Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
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* Copyright (C) 2014 Roman Byshko <rbyshko@gmail.com>
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*
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* Based on code from
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/usb_phy.h>
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#include <asm/io.h>
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#include <dm.h>
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#include "ehci.h"
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#ifdef CONFIG_SUNXI_GEN_SUN4I
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#define BASE_DIST 0x8000
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#define AHB_CLK_DIST 2
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#else
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#define BASE_DIST 0x1000
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#define AHB_CLK_DIST 1
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#endif
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struct ehci_sunxi_priv {
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struct ehci_ctrl ehci;
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struct sunxi_ccm_reg *ccm;
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int ahb_gate_mask; /* Mask of ahb_gate0 clk gate bits for this hcd */
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int phy_index; /* Index of the usb-phy attached to this hcd */
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};
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static int ehci_usb_probe(struct udevice *dev)
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{
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struct usb_platdata *plat = dev_get_platdata(dev);
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struct ehci_sunxi_priv *priv = dev_get_priv(dev);
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struct ehci_hccr *hccr = (struct ehci_hccr *)devfdt_get_addr(dev);
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struct ehci_hcor *hcor;
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int extra_ahb_gate_mask = 0;
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priv->ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
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if (IS_ERR(priv->ccm))
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return PTR_ERR(priv->ccm);
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/*
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* This should go away once we've moved to the driver model for
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* clocks resp. phys.
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*/
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priv->ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0;
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#if defined(CONFIG_MACH_SUNXI_H3_H5) || defined(CONFIG_MACH_SUN50I)
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extra_ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_OHCI0;
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#endif
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priv->phy_index = ((uintptr_t)hccr - SUNXI_USB1_BASE) / BASE_DIST;
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priv->ahb_gate_mask <<= priv->phy_index * AHB_CLK_DIST;
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extra_ahb_gate_mask <<= priv->phy_index * AHB_CLK_DIST;
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priv->phy_index++; /* Non otg phys start at 1 */
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setbits_le32(&priv->ccm->ahb_gate0,
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priv->ahb_gate_mask | extra_ahb_gate_mask);
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#ifdef CONFIG_SUNXI_GEN_SUN6I
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setbits_le32(&priv->ccm->ahb_reset0_cfg,
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priv->ahb_gate_mask | extra_ahb_gate_mask);
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#endif
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sunxi_usb_phy_init(priv->phy_index);
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sunxi_usb_phy_power_on(priv->phy_index);
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hcor = (struct ehci_hcor *)((uintptr_t)hccr +
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HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
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return ehci_register(dev, hccr, hcor, NULL, 0, plat->init_type);
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}
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static int ehci_usb_remove(struct udevice *dev)
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{
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struct ehci_sunxi_priv *priv = dev_get_priv(dev);
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int ret;
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ret = ehci_deregister(dev);
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if (ret)
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return ret;
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sunxi_usb_phy_exit(priv->phy_index);
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#ifdef CONFIG_SUNXI_GEN_SUN6I
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clrbits_le32(&priv->ccm->ahb_reset0_cfg, priv->ahb_gate_mask);
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#endif
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clrbits_le32(&priv->ccm->ahb_gate0, priv->ahb_gate_mask);
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return 0;
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}
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static const struct udevice_id ehci_usb_ids[] = {
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{ .compatible = "allwinner,sun4i-a10-ehci", },
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{ .compatible = "allwinner,sun5i-a13-ehci", },
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{ .compatible = "allwinner,sun6i-a31-ehci", },
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{ .compatible = "allwinner,sun7i-a20-ehci", },
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{ .compatible = "allwinner,sun8i-a23-ehci", },
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{ .compatible = "allwinner,sun8i-a83t-ehci", },
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{ .compatible = "allwinner,sun8i-h3-ehci", },
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{ .compatible = "allwinner,sun9i-a80-ehci", },
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{ .compatible = "allwinner,sun50i-a64-ehci", },
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{ }
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};
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U_BOOT_DRIVER(ehci_sunxi) = {
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.name = "ehci_sunxi",
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.id = UCLASS_USB,
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.of_match = ehci_usb_ids,
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.probe = ehci_usb_probe,
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.remove = ehci_usb_remove,
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.ops = &ehci_usb_ops,
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.platdata_auto_alloc_size = sizeof(struct usb_platdata),
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.priv_auto_alloc_size = sizeof(struct ehci_sunxi_priv),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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