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/*
* (C) Copyright 2014, Xilinx, Inc
*
* USB Low level initialization(Specific to zynq)
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sys_proto.h>
#include <asm/io.h>
#include <usb.h>
#include <usb/ehci-ci.h>
#include <usb/ulpi.h>
#include "ehci.h"
#define ZYNQ_USB_USBCMD_RST 0x0000002
#define ZYNQ_USB_USBCMD_STOP 0x0000000
#define ZYNQ_USB_NUM_MIO 12
/*
* Create the appropriate control structures to manage
* a new EHCI host controller.
*/
int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr,
struct ehci_hcor **hcor)
{
struct usb_ehci *ehci;
struct ulpi_viewport ulpi_vp;
int ret, mio_usb;
/* Used for writing the ULPI data address */
struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
if (!index) {
mio_usb = zynq_slcr_get_mio_pin_status("usb0");
if (mio_usb != ZYNQ_USB_NUM_MIO) {
printf("usb0 wrong num MIO: %d, Index %d\n", mio_usb,
index);
return -1;
}
ehci = (struct usb_ehci *)ZYNQ_USB_BASEADDR0;
} else {
mio_usb = zynq_slcr_get_mio_pin_status("usb1");
if (mio_usb != ZYNQ_USB_NUM_MIO) {
printf("usb1 wrong num MIO: %d, Index %d\n", mio_usb,
index);
return -1;
}
ehci = (struct usb_ehci *)ZYNQ_USB_BASEADDR1;
}
*hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
*hcor = (struct ehci_hcor *)((uint32_t) *hccr +
HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
ulpi_vp.port_num = 0;
ret = ulpi_init(&ulpi_vp);
if (ret) {
puts("zynq ULPI viewport init failed\n");
return -1;
}
/* ULPI set flags */
ulpi_write(&ulpi_vp, &ulpi->otg_ctrl,
ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN |
ULPI_OTG_EXTVBUSIND);
ulpi_write(&ulpi_vp, &ulpi->function_ctrl,
ULPI_FC_FULL_SPEED | ULPI_FC_OPMODE_NORMAL |
ULPI_FC_SUSPENDM);
ulpi_write(&ulpi_vp, &ulpi->iface_ctrl, 0);
/* Set VBus */
ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set,
ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
return 0;
}
/*
* Destroy the appropriate control structures corresponding
* the the EHCI host controller.
*/
int ehci_hcd_stop(int index)
{
struct usb_ehci *ehci;
if (!index)
ehci = (struct usb_ehci *)ZYNQ_USB_BASEADDR0;
else
ehci = (struct usb_ehci *)ZYNQ_USB_BASEADDR1;
/* Stop controller */
writel(ZYNQ_USB_USBCMD_STOP, &ehci->usbcmd);
udelay(1000);
/* Initiate controller reset */
writel(ZYNQ_USB_USBCMD_RST, &ehci->usbcmd);
return 0;
}
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