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https://github.com/AsahiLinux/u-boot
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a821c4af79
These support the flat device tree. We want to use the dev_read_..() prefix for functions that support both flat tree and live tree. So rename the existing functions to avoid confusion. In the end we will have: 1. dev_read_addr...() - works on devices, supports flat/live tree 2. devfdt_get_addr...() - current functions, flat tree only 3. of_get_address() etc. - new functions, live tree only All drivers will be written to use 1. That function will in turn call either 2 or 3 depending on whether the flat or live tree is in use. Note this involves changing some dead code - the imx_lpi2c.c file. Signed-off-by: Simon Glass <sjg@chromium.org>
103 lines
2.3 KiB
C
103 lines
2.3 KiB
C
/*
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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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* SPDX-License-Identifier: GPL-2.0+
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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 <usb.h>
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#include <power/regulator.h>
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#include <asm/gpio.h>
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#include "xhci.h"
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DECLARE_GLOBAL_DATA_PTR;
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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(void)
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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();
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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 = devfdt_get_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-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_alloc_size = sizeof(struct mvebu_xhci_platdata),
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.priv_auto_alloc_size = sizeof(struct mvebu_xhci),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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