83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* UniPhier Specific Glue Layer for DWC3
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*
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* Copyright (C) 2016-2017 Socionext Inc.
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* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
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*/
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#include <dm.h>
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#include <linux/bitops.h>
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#include <linux/errno.h>
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#include <linux/io.h>
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#include <linux/sizes.h>
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#define UNIPHIER_PRO4_DWC3_RESET 0x40
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#define UNIPHIER_PRO4_DWC3_RESET_XIOMMU BIT(5)
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#define UNIPHIER_PRO4_DWC3_RESET_XLINK BIT(4)
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#define UNIPHIER_PRO4_DWC3_RESET_PHY_SS BIT(2)
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#define UNIPHIER_PRO5_DWC3_RESET 0x00
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#define UNIPHIER_PRO5_DWC3_RESET_PHY_S1 BIT(17)
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#define UNIPHIER_PRO5_DWC3_RESET_PHY_S0 BIT(16)
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#define UNIPHIER_PRO5_DWC3_RESET_XLINK BIT(15)
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#define UNIPHIER_PRO5_DWC3_RESET_XIOMMU BIT(14)
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#define UNIPHIER_PXS2_DWC3_RESET 0x00
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#define UNIPHIER_PXS2_DWC3_RESET_XLINK BIT(15)
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static int uniphier_pro4_dwc3_init(void __iomem *regs)
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{
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u32 tmp;
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tmp = readl(regs + UNIPHIER_PRO4_DWC3_RESET);
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tmp &= ~UNIPHIER_PRO4_DWC3_RESET_PHY_SS;
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tmp |= UNIPHIER_PRO4_DWC3_RESET_XIOMMU | UNIPHIER_PRO4_DWC3_RESET_XLINK;
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writel(tmp, regs + UNIPHIER_PRO4_DWC3_RESET);
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return 0;
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}
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static int uniphier_pro5_dwc3_init(void __iomem *regs)
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{
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u32 tmp;
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tmp = readl(regs + UNIPHIER_PRO5_DWC3_RESET);
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tmp &= ~(UNIPHIER_PRO5_DWC3_RESET_PHY_S1 |
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UNIPHIER_PRO5_DWC3_RESET_PHY_S0);
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tmp |= UNIPHIER_PRO5_DWC3_RESET_XLINK | UNIPHIER_PRO5_DWC3_RESET_XIOMMU;
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writel(tmp, regs + UNIPHIER_PRO5_DWC3_RESET);
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return 0;
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}
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static int uniphier_pxs2_dwc3_init(void __iomem *regs)
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{
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u32 tmp;
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tmp = readl(regs + UNIPHIER_PXS2_DWC3_RESET);
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tmp |= UNIPHIER_PXS2_DWC3_RESET_XLINK;
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writel(tmp, regs + UNIPHIER_PXS2_DWC3_RESET);
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return 0;
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}
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static int uniphier_dwc3_probe(struct udevice *dev)
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{
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fdt_addr_t base;
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void __iomem *regs;
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int (*init)(void __iomem *regs);
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int ret;
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base = devfdt_get_addr(dev);
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if (base == FDT_ADDR_T_NONE)
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return -EINVAL;
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regs = ioremap(base, SZ_32K);
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if (!regs)
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return -ENOMEM;
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init = (typeof(init))dev_get_driver_data(dev);
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ret = init(regs);
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if (ret)
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dev_err(dev, "failed to init glue layer\n");
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iounmap(regs);
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return ret;
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}
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static const struct udevice_id uniphier_dwc3_match[] = {
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{
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.compatible = "socionext,uniphier-pro4-dwc3",
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.data = (ulong)uniphier_pro4_dwc3_init,
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},
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{
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.compatible = "socionext,uniphier-pro5-dwc3",
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.data = (ulong)uniphier_pro5_dwc3_init,
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},
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{
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.compatible = "socionext,uniphier-pxs2-dwc3",
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.data = (ulong)uniphier_pxs2_dwc3_init,
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},
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{
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.compatible = "socionext,uniphier-ld20-dwc3",
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.data = (ulong)uniphier_pxs2_dwc3_init,
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},
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{
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.compatible = "socionext,uniphier-pxs3-dwc3",
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.data = (ulong)uniphier_pxs2_dwc3_init,
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},
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{ /* sentinel */ }
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};
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U_BOOT_DRIVER(usb_xhci) = {
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.name = "uniphier-dwc3",
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.id = UCLASS_SIMPLE_BUS,
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.of_match = uniphier_dwc3_match,
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.probe = uniphier_dwc3_probe,
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};
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