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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>
93 lines
2.0 KiB
C
93 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
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*
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* Derived from linux/arch/mips/bcm63xx/usb-common.c:
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* Copyright 2008 Maxime Bizon <mbizon@freebox.fr>
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* Copyright 2013 Florian Fainelli <florian@openwrt.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <generic-phy.h>
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#include <log.h>
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#include <malloc.h>
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#include <reset.h>
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#include <asm/io.h>
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#include <dm/device.h>
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#include <linux/bitops.h>
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/* USBH Swap Control register */
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#define USBH_SWAP_REG 0x00
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#define USBH_SWAP_OHCI_DATA BIT(0)
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#define USBH_SWAP_OHCI_ENDIAN BIT(1)
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#define USBH_SWAP_EHCI_DATA BIT(3)
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#define USBH_SWAP_EHCI_ENDIAN BIT(4)
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/* USBH Test register */
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#define USBH_TEST_REG 0x24
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#define USBH_TEST_PORT_CTL 0x1c0020
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struct bcm6358_usbh_priv {
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void __iomem *regs;
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};
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static int bcm6358_usbh_init(struct phy *phy)
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{
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struct bcm6358_usbh_priv *priv = dev_get_priv(phy->dev);
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/* configure to work in native cpu endian */
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clrsetbits_be32(priv->regs + USBH_SWAP_REG,
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USBH_SWAP_EHCI_ENDIAN | USBH_SWAP_OHCI_ENDIAN,
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USBH_SWAP_EHCI_DATA | USBH_SWAP_OHCI_DATA);
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/* test port control */
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writel_be(USBH_TEST_PORT_CTL, priv->regs + USBH_TEST_REG);
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return 0;
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}
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static struct phy_ops bcm6358_usbh_ops = {
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.init = bcm6358_usbh_init,
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};
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static const struct udevice_id bcm6358_usbh_ids[] = {
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{ .compatible = "brcm,bcm6358-usbh" },
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{ /* sentinel */ }
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};
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static int bcm6358_usbh_probe(struct udevice *dev)
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{
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struct bcm6358_usbh_priv *priv = dev_get_priv(dev);
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struct reset_ctl rst_ctl;
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int ret;
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priv->regs = dev_remap_addr(dev);
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if (!priv->regs)
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return -EINVAL;
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/* perform reset */
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ret = reset_get_by_index(dev, 0, &rst_ctl);
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if (ret < 0)
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return ret;
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ret = reset_deassert(&rst_ctl);
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if (ret < 0)
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return ret;
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ret = reset_free(&rst_ctl);
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if (ret < 0)
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return ret;
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return 0;
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}
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U_BOOT_DRIVER(bcm6358_usbh) = {
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.name = "bcm6358-usbh",
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.id = UCLASS_PHY,
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.of_match = bcm6358_usbh_ids,
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.ops = &bcm6358_usbh_ops,
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.priv_auto = sizeof(struct bcm6358_usbh_priv),
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.probe = bcm6358_usbh_probe,
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};
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