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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>
111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 Ramon Fried <ramon.fried@gmail.com>
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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 <linux/bitops.h>
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#include <usb/ehci-ci.h>
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#include <usb/ulpi.h>
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#include <asm/io.h>
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/* PHY viewport regs */
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#define ULPI_MISC_A_READ 0x96
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#define ULPI_MISC_A_SET 0x97
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#define ULPI_MISC_A_CLEAR 0x98
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#define ULPI_MISC_A_VBUSVLDEXT BIT(0)
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#define ULPI_MISC_A_VBUSVLDEXTSEL BIT(1)
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#define GEN2_SESS_VLD_CTRL_EN BIT(7)
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#define SESS_VLD_CTRL BIT(25)
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struct msm_phy_priv {
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void __iomem *regs;
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struct usb_ehci *ehci; /* Start of IP core*/
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struct ulpi_viewport ulpi_vp; /* ULPI Viewport */
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};
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static int msm_phy_power_on(struct phy *phy)
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{
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struct msm_phy_priv *priv = dev_get_priv(phy->dev);
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/* Select and enable external configuration with USB PHY */
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ulpi_write(&priv->ulpi_vp, (u8 *)ULPI_MISC_A_SET,
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ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT);
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return 0;
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}
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static int msm_phy_power_off(struct phy *phy)
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{
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struct msm_phy_priv *priv = dev_get_priv(phy->dev);
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/* Disable VBUS mimicing in the controller. */
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ulpi_write(&priv->ulpi_vp, (u8 *)ULPI_MISC_A_CLEAR,
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ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT);
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return 0;
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}
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static int msm_phy_reset(struct phy *phy)
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{
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struct msm_phy_priv *p = dev_get_priv(phy->dev);
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/* select ULPI phy */
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writel(PORT_PTS_ULPI, &p->ehci->portsc);
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/* Enable sess_vld */
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setbits_le32(&p->ehci->genconfig2, GEN2_SESS_VLD_CTRL_EN);
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/* Enable external vbus configuration in the LINK */
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setbits_le32(&p->ehci->usbcmd, SESS_VLD_CTRL);
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/* USB_OTG_HS_AHB_BURST */
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writel(0x0, &p->ehci->sbuscfg);
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/* USB_OTG_HS_AHB_MODE: HPROT_MODE */
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/* Bus access related config. */
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writel(0x08, &p->ehci->sbusmode);
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return 0;
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}
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static int msm_phy_probe(struct udevice *dev)
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{
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struct msm_phy_priv *priv = dev_get_priv(dev);
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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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priv->ehci = (struct usb_ehci *)priv->regs;
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priv->ulpi_vp.port_num = 0;
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/* Warning: this will not work if viewport address is > 64 bit due to
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* ULPI design.
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*/
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priv->ulpi_vp.viewport_addr = (phys_addr_t)&priv->ehci->ulpi_viewpoint;
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return 0;
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}
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static struct phy_ops msm_phy_ops = {
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.power_on = msm_phy_power_on,
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.power_off = msm_phy_power_off,
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.reset = msm_phy_reset,
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};
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static const struct udevice_id msm_phy_ids[] = {
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{ .compatible = "qcom,apq8016-usbphy" },
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{ }
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};
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U_BOOT_DRIVER(msm8916_usbphy) = {
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.name = "msm8916_usbphy",
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.id = UCLASS_PHY,
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.of_match = msm_phy_ids,
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.ops = &msm_phy_ops,
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.probe = msm_phy_probe,
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.priv_auto = sizeof(struct msm_phy_priv),
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};
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