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74 lines
1.6 KiB
74 lines
1.6 KiB
// 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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