Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
usb: renesas_usbhs: Add support for RZ/A2
The RZ/A2 is similar to the R-Car Gen3 with some small differences.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
authored by
Chris Brandt
and committed by
Greg Kroah-Hartman
b69dce63
f7560669
+90
-1
+1
-1
drivers/usb/renesas_usbhs/Makefile
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-1
drivers/usb/renesas_usbhs/Makefile
···
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obj-$(CONFIG_USB_RENESAS_USBHS) += renesas_usbhs.o
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renesas_usbhs-y := common.o mod.o pipe.o fifo.o rcar2.o rcar3.o rza.o
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renesas_usbhs-y := common.o mod.o pipe.o fifo.o rcar2.o rcar3.o rza.o rza2.o
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ifneq ($(CONFIG_USB_RENESAS_USBHS_HCD),)
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renesas_usbhs-y += mod_host.o
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drivers/usb/renesas_usbhs/common.c
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drivers/usb/renesas_usbhs/common.c
···
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}
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};
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static const struct usbhs_of_data rza2_data = {
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.platform_callback = &usbhs_rza2_ops,
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.param = {
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.type = USBHS_TYPE_RZA2,
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.has_cnen = 1,
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.cfifo_byte_addr = 1,
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.pipe_configs = usbhsc_new_pipe,
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.pipe_size = ARRAY_SIZE(usbhsc_new_pipe),
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}
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};
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/*
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* platform functions
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*/
···
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{
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.compatible = "renesas,rza1-usbhs",
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.data = &rza1_data,
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},
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{
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.compatible = "renesas,rza2-usbhs",
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.data = &rza2_data,
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},
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{ },
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};
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drivers/usb/renesas_usbhs/rza.h
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drivers/usb/renesas_usbhs/rza.h
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drivers/usb/renesas_usbhs/rza2.c
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drivers/usb/renesas_usbhs/rza2.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(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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static int usbhs_rza2_get_id(struct platform_device *pdev)
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{
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return USBHS_GADGET;
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}
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const struct renesas_usbhs_platform_callback usbhs_rza2_ops = {
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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_rza2_get_id,
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};