127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
/*
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* Copyright 2015 Xilinx, Inc.
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*
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* Zynq USB HOST xHCI Controller
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*
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* Author: Siva Durga Prasad Paladugu<sivadur@xilinx.com>
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*
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* This file was reused from Freescale USB xHCI
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <usb.h>
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#include <linux/errno.h>
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#include <asm/arch-zynqmp/hardware.h>
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#include <linux/compat.h>
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#include <linux/usb/dwc3.h>
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#include "xhci.h"
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/* Declare global data pointer */
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DECLARE_GLOBAL_DATA_PTR;
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/* Default to the ZYNQMP XHCI defines */
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#define USB3_PWRCTL_CLK_CMD_MASK 0x3FE000
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#define USB3_PWRCTL_CLK_FREQ_MASK 0xFFC
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#define USB3_PHY_PARTIAL_RX_POWERON BIT(6)
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#define USB3_PHY_RX_POWERON BIT(14)
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#define USB3_PHY_TX_POWERON BIT(15)
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#define USB3_PHY_TX_RX_POWERON (USB3_PHY_RX_POWERON | USB3_PHY_TX_POWERON)
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#define USB3_PWRCTL_CLK_CMD_SHIFT 14
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#define USB3_PWRCTL_CLK_FREQ_SHIFT 22
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/* USBOTGSS_WRAPPER definitions */
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#define USBOTGSS_WRAPRESET BIT(17)
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#define USBOTGSS_DMADISABLE BIT(16)
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#define USBOTGSS_STANDBYMODE_NO_STANDBY BIT(4)
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#define USBOTGSS_STANDBYMODE_SMRT BIT(5)
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#define USBOTGSS_STANDBYMODE_SMRT_WKUP (0x3 << 4)
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#define USBOTGSS_IDLEMODE_NOIDLE BIT(2)
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#define USBOTGSS_IDLEMODE_SMRT BIT(3)
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#define USBOTGSS_IDLEMODE_SMRT_WKUP (0x3 << 2)
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/* USBOTGSS_IRQENABLE_SET_0 bit */
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#define USBOTGSS_COREIRQ_EN BIT(1)
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/* USBOTGSS_IRQENABLE_SET_1 bits */
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#define USBOTGSS_IRQ_SET_1_IDPULLUP_FALL_EN BIT(1)
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#define USBOTGSS_IRQ_SET_1_DISCHRGVBUS_FALL_EN BIT(3)
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#define USBOTGSS_IRQ_SET_1_CHRGVBUS_FALL_EN BIT(4)
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#define USBOTGSS_IRQ_SET_1_DRVVBUS_FALL_EN BIT(5)
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#define USBOTGSS_IRQ_SET_1_IDPULLUP_RISE_EN BIT(8)
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#define USBOTGSS_IRQ_SET_1_DISCHRGVBUS_RISE_EN BIT(11)
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#define USBOTGSS_IRQ_SET_1_CHRGVBUS_RISE_EN BIT(12)
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#define USBOTGSS_IRQ_SET_1_DRVVBUS_RISE_EN BIT(13)
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#define USBOTGSS_IRQ_SET_1_OEVT_EN BIT(16)
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#define USBOTGSS_IRQ_SET_1_DMADISABLECLR_EN BIT(17)
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struct zynqmp_xhci {
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struct xhci_hccr *hcd;
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struct dwc3 *dwc3_reg;
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};
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static struct zynqmp_xhci zynqmp_xhci;
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unsigned long ctr_addr[] = CONFIG_ZYNQMP_XHCI_LIST;
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static int zynqmp_xhci_core_init(struct zynqmp_xhci *zynqmp_xhci)
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{
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int ret = 0;
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ret = dwc3_core_init(zynqmp_xhci->dwc3_reg);
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if (ret) {
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debug("%s:failed to initialize core\n", __func__);
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return ret;
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}
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/* We are hard-coding DWC3 core to Host Mode */
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dwc3_set_mode(zynqmp_xhci->dwc3_reg, DWC3_GCTL_PRTCAP_HOST);
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return ret;
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}
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int xhci_hcd_init(int index, struct xhci_hccr **hccr, struct xhci_hcor **hcor)
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{
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struct zynqmp_xhci *ctx = &zynqmp_xhci;
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int ret = 0;
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uint32_t hclen;
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if (index < 0 || index >= ARRAY_SIZE(ctr_addr))
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return -EINVAL;
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ctx->hcd = (struct xhci_hccr *)ctr_addr[index];
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ctx->dwc3_reg = (struct dwc3 *)((void *)ctx->hcd + DWC3_REG_OFFSET);
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ret = board_usb_init(index, USB_INIT_HOST);
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if (ret != 0) {
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puts("Failed to initialize board for USB\n");
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return ret;
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}
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ret = zynqmp_xhci_core_init(ctx);
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if (ret < 0) {
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puts("Failed to initialize xhci\n");
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return ret;
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}
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*hccr = (struct xhci_hccr *)ctx->hcd;
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hclen = HC_LENGTH(xhci_readl(&(*hccr)->cr_capbase));
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*hcor = (struct xhci_hcor *)((uintptr_t) *hccr + hclen);
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debug("zynqmp-xhci: init hccr %p and hcor %p hc_length %d\n",
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*hccr, *hcor, hclen);
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return ret;
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}
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void xhci_hcd_stop(int index)
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{
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/*
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* Currently zynqmp socs do not support PHY shutdown from
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* sw. But this support may be added in future socs.
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*/
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return;
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}
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