116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/*
|
|
* 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>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <asm/arch/usb_phy.h>
|
|
#include <asm/io.h>
|
|
#include <dm.h>
|
|
#include "ehci.h"
|
|
|
|
#ifdef CONFIG_SUNXI_GEN_SUN4I
|
|
#define BASE_DIST 0x8000
|
|
#define AHB_CLK_DIST 2
|
|
#else
|
|
#define BASE_DIST 0x1000
|
|
#define AHB_CLK_DIST 1
|
|
#endif
|
|
|
|
struct ehci_sunxi_priv {
|
|
struct ehci_ctrl ehci;
|
|
int ahb_gate_mask; /* Mask of ahb_gate0 clk gate bits for this hcd */
|
|
int phy_index; /* Index of the usb-phy attached to this hcd */
|
|
};
|
|
|
|
static int ehci_usb_probe(struct udevice *dev)
|
|
{
|
|
struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
|
struct usb_platdata *plat = dev_get_platdata(dev);
|
|
struct ehci_sunxi_priv *priv = dev_get_priv(dev);
|
|
struct ehci_hccr *hccr = (struct ehci_hccr *)dev_get_addr(dev);
|
|
struct ehci_hcor *hcor;
|
|
int extra_ahb_gate_mask = 0;
|
|
|
|
/*
|
|
* 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_SUN8I_H3) || defined(CONFIG_MACH_SUN50I)
|
|
extra_ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_OHCI0;
|
|
#endif
|
|
priv->phy_index = ((uintptr_t)hccr - SUNXI_USB1_BASE) / BASE_DIST;
|
|
priv->ahb_gate_mask <<= priv->phy_index * AHB_CLK_DIST;
|
|
extra_ahb_gate_mask <<= priv->phy_index * AHB_CLK_DIST;
|
|
priv->phy_index++; /* Non otg phys start at 1 */
|
|
|
|
setbits_le32(&ccm->ahb_gate0,
|
|
priv->ahb_gate_mask | extra_ahb_gate_mask);
|
|
#ifdef CONFIG_SUNXI_GEN_SUN6I
|
|
setbits_le32(&ccm->ahb_reset0_cfg,
|
|
priv->ahb_gate_mask | extra_ahb_gate_mask);
|
|
#endif
|
|
|
|
sunxi_usb_phy_init(priv->phy_index);
|
|
sunxi_usb_phy_power_on(priv->phy_index);
|
|
|
|
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 sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
|
|
struct ehci_sunxi_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
ret = ehci_deregister(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
sunxi_usb_phy_exit(priv->phy_index);
|
|
|
|
#ifdef CONFIG_SUNXI_GEN_SUN6I
|
|
clrbits_le32(&ccm->ahb_reset0_cfg, priv->ahb_gate_mask);
|
|
#endif
|
|
clrbits_le32(&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,
|
|
};
|