mirror of
https://github.com/brain-hackers/u-boot-brain
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41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Marvell International Ltd.
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*
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* MVEBU USB HOST xHCI Controller
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*/
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#include <common.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <log.h>
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#include <usb.h>
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#include <power/regulator.h>
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#include <asm/gpio.h>
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#include <usb/xhci.h>
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struct mvebu_xhci_platdata {
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fdt_addr_t hcd_base;
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};
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/**
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* Contains pointers to register base addresses
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* for the usb controller.
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*/
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struct mvebu_xhci {
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struct xhci_ctrl ctrl; /* Needs to come first in this struct! */
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struct usb_platdata usb_plat;
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struct xhci_hccr *hcd;
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};
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/*
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* Dummy implementation that can be overwritten by a board
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* specific function
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*/
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__weak int board_xhci_enable(fdt_addr_t base)
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{
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return 0;
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}
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static int xhci_usb_probe(struct udevice *dev)
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{
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struct mvebu_xhci_platdata *plat = dev_get_platdata(dev);
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struct mvebu_xhci *ctx = dev_get_priv(dev);
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struct xhci_hcor *hcor;
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int len, ret;
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struct udevice *regulator;
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ctx->hcd = (struct xhci_hccr *)plat->hcd_base;
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len = HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase));
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hcor = (struct xhci_hcor *)((uintptr_t)ctx->hcd + len);
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ret = device_get_supply_regulator(dev, "vbus-supply", ®ulator);
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if (!ret) {
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ret = regulator_set_enable(regulator, true);
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if (ret) {
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printf("Failed to turn ON the VBUS regulator\n");
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return ret;
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}
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}
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/* Enable USB xHCI (VBUS, reset etc) in board specific code */
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board_xhci_enable(devfdt_get_addr_index(dev, 1));
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return xhci_register(dev, ctx->hcd, hcor);
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}
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static int xhci_usb_ofdata_to_platdata(struct udevice *dev)
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{
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struct mvebu_xhci_platdata *plat = dev_get_platdata(dev);
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/*
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* Get the base address for XHCI controller from the device node
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*/
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plat->hcd_base = dev_read_addr(dev);
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if (plat->hcd_base == FDT_ADDR_T_NONE) {
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debug("Can't get the XHCI register base address\n");
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return -ENXIO;
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}
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return 0;
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}
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static const struct udevice_id xhci_usb_ids[] = {
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{ .compatible = "marvell,armada3700-xhci" },
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{ .compatible = "marvell,armada-380-xhci" },
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{ .compatible = "marvell,armada-8k-xhci" },
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{ }
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};
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U_BOOT_DRIVER(usb_xhci) = {
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.name = "xhci_mvebu",
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.id = UCLASS_USB,
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.of_match = xhci_usb_ids,
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.ofdata_to_platdata = xhci_usb_ofdata_to_platdata,
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.probe = xhci_usb_probe,
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.remove = xhci_deregister,
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.ops = &xhci_usb_ops,
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.platdata_auto = sizeof(struct mvebu_xhci_platdata),
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.priv_auto = sizeof(struct mvebu_xhci),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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