mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-10-04 18:40:42 +09:00
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>
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019 Broadcom.
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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 <asm/io.h>
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#include <usb/xhci.h>
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#define DRD2U3H_XHC_REGS_AXIWRA 0xC08
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#define DRD2U3H_XHC_REGS_AXIRDA 0xC0C
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#define USBAXI_CACHE 0xF
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#define USBAXI_PROT 0x8
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#define USBAXI_SA_MASK 0x1FF
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#define USBAXI_UA_MASK (0x1FF << 16)
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#define USBAXI_SA_VAL ((USBAXI_CACHE << 4) | USBAXI_PROT)
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#define USBAXI_UA_VAL (USBAXI_SA_VAL << 16)
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#define USBAXI_SA_UA_MASK (USBAXI_UA_MASK | USBAXI_SA_MASK)
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#define USBAXI_SA_UA_VAL (USBAXI_UA_VAL | USBAXI_SA_VAL)
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struct brcm_xhci_platdata {
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unsigned int arcache;
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unsigned int awcache;
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void __iomem *hc_base;
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};
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static int xhci_brcm_probe(struct udevice *dev)
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{
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struct brcm_xhci_platdata *plat = dev_get_platdata(dev);
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struct xhci_hcor *hcor;
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struct xhci_hccr *hcd;
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int len, ret = 0;
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if (!plat) {
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dev_err(dev, "Can't get xHCI Plat data\n");
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return -ENOMEM;
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}
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hcd = dev_read_addr_ptr(dev);
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if (!hcd) {
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dev_err(dev, "Can't get the xHCI register base address\n");
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return -ENXIO;
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}
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plat->hc_base = hcd;
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len = HC_LENGTH(xhci_readl(&hcd->cr_capbase));
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hcor = (struct xhci_hcor *)(plat->hc_base + len);
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/* Save the default values of AXI read and write attributes */
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plat->awcache = readl(plat->hc_base + DRD2U3H_XHC_REGS_AXIWRA);
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plat->arcache = readl(plat->hc_base + DRD2U3H_XHC_REGS_AXIRDA);
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/* Enable AXI write attributes */
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clrsetbits_le32(plat->hc_base + DRD2U3H_XHC_REGS_AXIWRA,
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USBAXI_SA_UA_MASK, USBAXI_SA_UA_VAL);
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/* Enable AXI read attributes */
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clrsetbits_le32(plat->hc_base + DRD2U3H_XHC_REGS_AXIRDA,
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USBAXI_SA_UA_MASK, USBAXI_SA_UA_VAL);
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ret = xhci_register(dev, hcd, hcor);
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if (ret)
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dev_err(dev, "Failed to register xHCI\n");
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return ret;
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}
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static int xhci_brcm_deregister(struct udevice *dev)
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{
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struct brcm_xhci_platdata *plat = dev_get_platdata(dev);
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/* Restore the default values for AXI read and write attributes */
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writel(plat->awcache, plat->hc_base + DRD2U3H_XHC_REGS_AXIWRA);
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writel(plat->arcache, plat->hc_base + DRD2U3H_XHC_REGS_AXIRDA);
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return xhci_deregister(dev);
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}
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static const struct udevice_id xhci_brcm_ids[] = {
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{ .compatible = "brcm,generic-xhci" },
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{ }
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};
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U_BOOT_DRIVER(usb_xhci) = {
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.name = "xhci_brcm",
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.id = UCLASS_USB,
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.probe = xhci_brcm_probe,
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.remove = xhci_brcm_deregister,
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.ops = &xhci_usb_ops,
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.of_match = xhci_brcm_ids,
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.plat_auto = sizeof(struct brcm_xhci_platdata),
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.priv_auto = sizeof(struct xhci_ctrl),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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