75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Renesas USB driver RZ/A2 initialization and power control
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*
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* Copyright (C) 2019 Chris Brandt
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* Copyright (C) 2019 Renesas Electronics Corporation
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*/
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/of_device.h>
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#include <linux/phy/phy.h>
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#include "common.h"
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#include "rza.h"
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static int usbhs_rza2_hardware_init(struct platform_device *pdev)
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{
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struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
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struct phy *phy = phy_get(&pdev->dev, "usb");
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if (IS_ERR(phy))
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return PTR_ERR(phy);
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priv->phy = phy;
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return 0;
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}
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static int usbhs_rza2_hardware_exit(struct platform_device *pdev)
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{
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struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
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phy_put(&pdev->dev, priv->phy);
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priv->phy = NULL;
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return 0;
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}
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static int usbhs_rza2_power_ctrl(struct platform_device *pdev,
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void __iomem *base, int enable)
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{
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struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
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int retval = 0;
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if (!priv->phy)
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return -ENODEV;
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if (enable) {
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retval = phy_init(priv->phy);
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usbhs_bset(priv, SUSPMODE, SUSPM, SUSPM);
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udelay(100); /* Wait for PLL to become stable */
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if (!retval)
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retval = phy_power_on(priv->phy);
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} else {
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usbhs_bset(priv, SUSPMODE, SUSPM, 0);
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phy_power_off(priv->phy);
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phy_exit(priv->phy);
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}
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return retval;
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}
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const struct renesas_usbhs_platform_info usbhs_rza2_plat_info = {
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.platform_callback = {
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.hardware_init = usbhs_rza2_hardware_init,
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.hardware_exit = usbhs_rza2_hardware_exit,
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.power_ctrl = usbhs_rza2_power_ctrl,
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.get_id = usbhs_get_id_as_gadget,
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},
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.driver_param = {
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.has_cnen = 1,
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.cfifo_byte_addr = 1,
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.has_new_pipe_configs = 1,
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},
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};
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