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https://github.com/torvalds/linux
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7559e7572c
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for drivers/phy/phy-can-transceiver.c Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> Link: https://lore.kernel.org/r/20230714174841.4061919-1-robh@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Atheros AR71XX/9XXX USB PHY driver
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*
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* Copyright (C) 2015-2018 Alban Bedel <albeu@free.fr>
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*/
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#include <linux/mod_devicetable.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/phy/phy.h>
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#include <linux/reset.h>
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struct ath79_usb_phy {
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struct reset_control *reset;
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/* The suspend override logic is inverted, hence the no prefix
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* to make the code a bit easier to understand.
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*/
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struct reset_control *no_suspend_override;
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};
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static int ath79_usb_phy_power_on(struct phy *phy)
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{
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struct ath79_usb_phy *priv = phy_get_drvdata(phy);
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int err = 0;
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if (priv->no_suspend_override) {
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err = reset_control_assert(priv->no_suspend_override);
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if (err)
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return err;
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}
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err = reset_control_deassert(priv->reset);
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if (err && priv->no_suspend_override)
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reset_control_deassert(priv->no_suspend_override);
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return err;
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}
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static int ath79_usb_phy_power_off(struct phy *phy)
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{
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struct ath79_usb_phy *priv = phy_get_drvdata(phy);
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int err = 0;
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err = reset_control_assert(priv->reset);
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if (err)
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return err;
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if (priv->no_suspend_override) {
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err = reset_control_deassert(priv->no_suspend_override);
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if (err)
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reset_control_deassert(priv->reset);
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}
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return err;
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}
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static const struct phy_ops ath79_usb_phy_ops = {
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.power_on = ath79_usb_phy_power_on,
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.power_off = ath79_usb_phy_power_off,
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.owner = THIS_MODULE,
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};
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static int ath79_usb_phy_probe(struct platform_device *pdev)
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{
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struct ath79_usb_phy *priv;
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struct phy *phy;
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priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->reset = devm_reset_control_get(&pdev->dev, "phy");
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if (IS_ERR(priv->reset))
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return PTR_ERR(priv->reset);
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priv->no_suspend_override = devm_reset_control_get_optional(
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&pdev->dev, "usb-suspend-override");
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if (IS_ERR(priv->no_suspend_override))
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return PTR_ERR(priv->no_suspend_override);
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phy = devm_phy_create(&pdev->dev, NULL, &ath79_usb_phy_ops);
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if (IS_ERR(phy))
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return PTR_ERR(phy);
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phy_set_drvdata(phy, priv);
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return PTR_ERR_OR_ZERO(devm_of_phy_provider_register(
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&pdev->dev, of_phy_simple_xlate));
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}
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static const struct of_device_id ath79_usb_phy_of_match[] = {
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{ .compatible = "qca,ar7100-usb-phy" },
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{}
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};
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MODULE_DEVICE_TABLE(of, ath79_usb_phy_of_match);
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static struct platform_driver ath79_usb_phy_driver = {
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.probe = ath79_usb_phy_probe,
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.driver = {
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.of_match_table = ath79_usb_phy_of_match,
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.name = "ath79-usb-phy",
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}
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};
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module_platform_driver(ath79_usb_phy_driver);
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MODULE_DESCRIPTION("ATH79 USB PHY driver");
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MODULE_AUTHOR("Alban Bedel <albeu@free.fr>");
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MODULE_LICENSE("GPL");
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