mirror of
https://github.com/AsahiLinux/u-boot
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caa4daa2ae
We use 'priv' for private data but often use 'platdata' for platform data. We can't really use 'pdata' since that is ambiguous (it could mean private or platform data). Rename some of the latter variables to end with 'plat' for consistency. Signed-off-by: Simon Glass <sjg@chromium.org>
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2014, Xilinx, Inc
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*
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* USB Low level initialization(Specific to zynq)
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*/
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#include <common.h>
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#include <dm.h>
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#include <usb.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/io.h>
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#include <usb/ehci-ci.h>
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#include <usb/ulpi.h>
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#include "ehci.h"
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struct zynq_ehci_priv {
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struct ehci_ctrl ehcictrl;
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struct usb_ehci *ehci;
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};
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static int ehci_zynq_ofdata_to_platdata(struct udevice *dev)
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{
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struct zynq_ehci_priv *priv = dev_get_priv(dev);
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priv->ehci = dev_read_addr_ptr(dev);
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if (!priv->ehci)
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return -EINVAL;
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return 0;
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}
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static int ehci_zynq_probe(struct udevice *dev)
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{
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struct usb_platdata *plat = dev_get_platdata(dev);
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struct zynq_ehci_priv *priv = dev_get_priv(dev);
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struct ehci_hccr *hccr;
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struct ehci_hcor *hcor;
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struct ulpi_viewport ulpi_vp;
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/* Used for writing the ULPI data address */
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struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
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int ret;
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hccr = (struct ehci_hccr *)((uint32_t)&priv->ehci->caplength);
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hcor = (struct ehci_hcor *)((uint32_t) hccr +
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HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
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ulpi_vp.viewport_addr = (u32)&priv->ehci->ulpi_viewpoint;
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ulpi_vp.port_num = 0;
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ret = ulpi_init(&ulpi_vp);
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if (ret) {
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puts("zynq ULPI viewport init failed\n");
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return -1;
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}
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/* ULPI set flags */
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ulpi_write(&ulpi_vp, &ulpi->otg_ctrl,
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ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN |
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ULPI_OTG_EXTVBUSIND);
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ulpi_write(&ulpi_vp, &ulpi->function_ctrl,
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ULPI_FC_FULL_SPEED | ULPI_FC_OPMODE_NORMAL |
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ULPI_FC_SUSPENDM);
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ulpi_write(&ulpi_vp, &ulpi->iface_ctrl, 0);
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/* Set VBus */
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ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set,
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ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
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return ehci_register(dev, hccr, hcor, NULL, 0, plat->init_type);
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}
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static const struct udevice_id ehci_zynq_ids[] = {
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{ .compatible = "xlnx,zynq-usb-2.20a" },
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{ }
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};
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U_BOOT_DRIVER(ehci_zynq) = {
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.name = "ehci_zynq",
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.id = UCLASS_USB,
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.of_match = ehci_zynq_ids,
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.ofdata_to_platdata = ehci_zynq_ofdata_to_platdata,
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.probe = ehci_zynq_probe,
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.remove = ehci_deregister,
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.ops = &ehci_usb_ops,
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.plat_auto = sizeof(struct usb_platdata),
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.priv_auto = sizeof(struct zynq_ehci_priv),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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