u-boot/drivers/usb/host/ehci-sunxi.c
Amit Singh Tomar 9d6c9d988f sunxi: A64: enable USB support
Mostly by adding MACH_SUN50I to some existing #ifdefs enable support
for the the HCI0 USB host controller on the A64.
Fix up some minor 64-bit hiccups on the way.
Add the bare minimum DT bits to the A64 .dtsi and enable the controllers
and the PHY on the Pine64.
This is limited to the first USB controller at the moment, which is
connected to the lower USB socket on the Pine64 board.
[Andre: remove unneeded defines, enable OHCI, add commit message]

Signed-off-by: Amit Singh Tomar <amittomer25@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-10-30 11:38:04 +01:00

115 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,
};