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/*
* OMAP USB HOST xHCI Controller
*
* (C) Copyright 2013
* Texas Instruments, <www.ti.com>
*
* Author: Dan Murphy <dmurphy@ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <usb.h>
#include <linux/errno.h>
#include <asm/omap_common.h>
#include <asm/arch/cpu.h>
#include <asm/arch/sys_proto.h>
#include <linux/compat.h>
#include <linux/usb/dwc3.h>
#include <linux/usb/xhci-omap.h>
#include "xhci.h"
/* Declare global data pointer */
DECLARE_GLOBAL_DATA_PTR;
static struct omap_xhci omap;
__weak int omap_xhci_board_usb_init(int index, enum usb_init_type init)
{
enable_usb_clocks(index);
return 0;
}
int board_usb_init(int index, enum usb_init_type init)
{
return omap_xhci_board_usb_init(index, init);
}
__weak int omap_xhci_board_usb_cleanup(int index, enum usb_init_type init)
{
disable_usb_clocks(index);
return 0;
}
int board_usb_cleanup(int index, enum usb_init_type init)
{
return omap_xhci_board_usb_cleanup(index, init);
}
static int omap_xhci_core_init(struct omap_xhci *omap)
{
int ret = 0;
usb_phy_power(1);
omap_enable_phy(omap);
ret = dwc3_core_init(omap->dwc3_reg);
if (ret) {
debug("%s:failed to initialize core\n", __func__);
return ret;
}
/* We are hard-coding DWC3 core to Host Mode */
dwc3_set_mode(omap->dwc3_reg, DWC3_GCTL_PRTCAP_HOST);
return ret;
}
static void omap_xhci_core_exit(struct omap_xhci *omap)
{
usb_phy_power(0);
}
int xhci_hcd_init(int index, struct xhci_hccr **hccr, struct xhci_hcor **hcor)
{
struct omap_xhci *ctx = &omap;
int ret = 0;
ctx->hcd = (struct xhci_hccr *)OMAP_XHCI_BASE;
ctx->dwc3_reg = (struct dwc3 *)((char *)(ctx->hcd) + DWC3_REG_OFFSET);
ctx->usb3_phy = (struct omap_usb3_phy *)OMAP_OCP1_SCP_BASE;
ctx->otg_wrapper = (struct omap_dwc_wrapper *)OMAP_OTG_WRAPPER_BASE;
ret = board_usb_init(index, USB_INIT_HOST);
if (ret != 0) {
puts("Failed to initialize board for USB\n");
return ret;
}
ret = omap_xhci_core_init(ctx);
if (ret < 0) {
puts("Failed to initialize xhci\n");
return ret;
}
*hccr = (struct xhci_hccr *)(OMAP_XHCI_BASE);
*hcor = (struct xhci_hcor *)((uint32_t) *hccr
+ HC_LENGTH(xhci_readl(&(*hccr)->cr_capbase)));
debug("omap-xhci: init hccr %x and hcor %x hc_length %d\n",
(uint32_t)*hccr, (uint32_t)*hcor,
(uint32_t)HC_LENGTH(xhci_readl(&(*hccr)->cr_capbase)));
return ret;
}
void xhci_hcd_stop(int index)
{
struct omap_xhci *ctx = &omap;
omap_xhci_core_exit(ctx);
board_usb_cleanup(index, USB_INIT_HOST);
}
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