8a8d24bdf1
Try to maintain some consistency between these variables by using _plat as a suffix for them. Signed-off-by: Simon Glass <sjg@chromium.org>
151 lines
3.2 KiB
C
151 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Qualcomm EHCI driver
|
|
*
|
|
* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
|
|
*
|
|
* Based on Linux driver
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <usb.h>
|
|
#include <usb/ehci-ci.h>
|
|
#include <usb/ulpi.h>
|
|
#include <wait_bit.h>
|
|
#include <asm/gpio.h>
|
|
#include <asm/io.h>
|
|
#include <linux/compat.h>
|
|
#include "ehci.h"
|
|
|
|
struct msm_ehci_priv {
|
|
struct ehci_ctrl ctrl; /* Needed by EHCI */
|
|
struct usb_ehci *ehci; /* Start of IP core*/
|
|
struct ulpi_viewport ulpi_vp; /* ULPI Viewport */
|
|
struct phy phy;
|
|
};
|
|
|
|
static int msm_init_after_reset(struct ehci_ctrl *dev)
|
|
{
|
|
struct msm_ehci_priv *p = container_of(dev, struct msm_ehci_priv, ctrl);
|
|
struct usb_ehci *ehci = p->ehci;
|
|
|
|
generic_phy_reset(&p->phy);
|
|
|
|
/* set mode to host controller */
|
|
writel(CM_HOST, &ehci->usbmode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct ehci_ops msm_ehci_ops = {
|
|
.init_after_reset = msm_init_after_reset
|
|
};
|
|
|
|
static int ehci_usb_probe(struct udevice *dev)
|
|
{
|
|
struct msm_ehci_priv *p = dev_get_priv(dev);
|
|
struct usb_ehci *ehci = p->ehci;
|
|
struct usb_plat *plat = dev_get_plat(dev);
|
|
struct ehci_hccr *hccr;
|
|
struct ehci_hcor *hcor;
|
|
int ret;
|
|
|
|
hccr = (struct ehci_hccr *)((phys_addr_t)&ehci->caplength);
|
|
hcor = (struct ehci_hcor *)((phys_addr_t)hccr +
|
|
HC_LENGTH(ehci_readl(&(hccr)->cr_capbase)));
|
|
|
|
ret = ehci_setup_phy(dev, &p->phy, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = board_usb_init(0, plat->init_type);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return ehci_register(dev, hccr, hcor, &msm_ehci_ops, 0,
|
|
plat->init_type);
|
|
}
|
|
|
|
static int ehci_usb_remove(struct udevice *dev)
|
|
{
|
|
struct msm_ehci_priv *p = dev_get_priv(dev);
|
|
struct usb_ehci *ehci = p->ehci;
|
|
int ret;
|
|
|
|
ret = ehci_deregister(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Stop controller. */
|
|
clrbits_le32(&ehci->usbcmd, CMD_RUN);
|
|
|
|
ret = ehci_shutdown_phy(dev, &p->phy);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = board_usb_init(0, USB_INIT_DEVICE); /* Board specific hook */
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Reset controller */
|
|
setbits_le32(&ehci->usbcmd, CMD_RESET);
|
|
|
|
/* Wait for reset */
|
|
if (wait_for_bit_le32(&ehci->usbcmd, CMD_RESET, false, 30, false)) {
|
|
printf("Stuck on USB reset.\n");
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ehci_usb_of_to_plat(struct udevice *dev)
|
|
{
|
|
struct msm_ehci_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->ulpi_vp.port_num = 0;
|
|
priv->ehci = dev_read_addr_ptr(dev);
|
|
|
|
if (priv->ehci == (void *)FDT_ADDR_T_NONE)
|
|
return -EINVAL;
|
|
|
|
/* Warning: this will not work if viewport address is > 64 bit due to
|
|
* ULPI design.
|
|
*/
|
|
priv->ulpi_vp.viewport_addr = (phys_addr_t)&priv->ehci->ulpi_viewpoint;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if defined(CONFIG_CI_UDC)
|
|
/* Little quirk that MSM needs with Chipidea controller
|
|
* Must reinit phy after reset
|
|
*/
|
|
void ci_init_after_reset(struct ehci_ctrl *ctrl)
|
|
{
|
|
struct msm_ehci_priv *p = ctrl->priv;
|
|
|
|
generic_phy_reset(&p->phy);
|
|
}
|
|
#endif
|
|
|
|
static const struct udevice_id ehci_usb_ids[] = {
|
|
{ .compatible = "qcom,ehci-host", },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(usb_ehci) = {
|
|
.name = "ehci_msm",
|
|
.id = UCLASS_USB,
|
|
.of_match = ehci_usb_ids,
|
|
.of_to_plat = ehci_usb_of_to_plat,
|
|
.probe = ehci_usb_probe,
|
|
.remove = ehci_usb_remove,
|
|
.ops = &ehci_usb_ops,
|
|
.priv_auto = sizeof(struct msm_ehci_priv),
|
|
.plat_auto = sizeof(struct usb_plat),
|
|
.flags = DM_FLAG_ALLOC_PRIV_DMA,
|
|
};
|