Commit e7018751 authored by Fabio Estevam's avatar Fabio Estevam Committed by Greg Kroah-Hartman
Browse files

usb: host: ehci-mxc: Remove the driver 



The ehci-mxc driver was only used by i.MX non-DT platforms.

Since 5.10-rc1, i.MX has been converted to a DT-only platform and all
board files are gone.

Remove the ehci-mxc driver as there are no more users at all.

Acked-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: default avatarFabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20201113171231.2205-1-festevam@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e625f3de

drivers/usb/host/Kconfig

+0 −7
Original line number Diff line number Diff line
@@ -213,13 +213,6 @@ config USB_EHCI_FSL 
	help

	  Variation of ARC USB block used in some Freescale chips.



config USB_EHCI_MXC

	tristate "Support for Freescale i.MX on-chip EHCI USB controller"

	depends on ARCH_MXC || COMPILE_TEST

	select USB_EHCI_ROOT_HUB_TT

	help

	  Variation of ARC USB block used in some Freescale chips.



config USB_EHCI_HCD_NPCM7XX

	tristate "Support for Nuvoton NPCM7XX on-chip EHCI USB controller"

	depends on (USB_EHCI_HCD && ARCH_NPCM7XX) || COMPILE_TEST

drivers/usb/host/Makefile

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Original line number Diff line number Diff line
@@ -40,7 +40,6 @@ obj-$(CONFIG_USB_PCI) += pci-quirks.o 
obj-$(CONFIG_USB_EHCI_HCD)	+= ehci-hcd.o

obj-$(CONFIG_USB_EHCI_PCI)	+= ehci-pci.o

obj-$(CONFIG_USB_EHCI_HCD_PLATFORM)	+= ehci-platform.o

obj-$(CONFIG_USB_EHCI_MXC)	+= ehci-mxc.o

obj-$(CONFIG_USB_EHCI_HCD_NPCM7XX)	+= ehci-npcm7xx.o

obj-$(CONFIG_USB_EHCI_HCD_OMAP)	+= ehci-omap.o

obj-$(CONFIG_USB_EHCI_HCD_ORION)	+= ehci-orion.o

drivers/usb/host/ehci-mxc.c

deleted100644 → 0
+0 −213
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0+

/*

 * Copyright (c) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix

 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>

 */



#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/io.h>

#include <linux/platform_device.h>

#include <linux/clk.h>

#include <linux/delay.h>

#include <linux/usb/otg.h>

#include <linux/usb/ulpi.h>

#include <linux/slab.h>

#include <linux/usb.h>

#include <linux/usb/hcd.h>

#include <linux/platform_data/usb-ehci-mxc.h>

#include "ehci.h"



#define DRIVER_DESC "Freescale On-Chip EHCI Host driver"



static const char hcd_name[] = "ehci-mxc";



#define ULPI_VIEWPORT_OFFSET	0x170



struct ehci_mxc_priv {

	struct clk *usbclk, *ahbclk, *phyclk;

};



static struct hc_driver __read_mostly ehci_mxc_hc_driver;



static const struct ehci_driver_overrides ehci_mxc_overrides __initconst = {

	.extra_priv_size =	sizeof(struct ehci_mxc_priv),

};



static int ehci_mxc_drv_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;

	struct mxc_usbh_platform_data *pdata = dev_get_platdata(dev);

	struct usb_hcd *hcd;

	struct resource *res;

	int irq, ret;

	struct ehci_mxc_priv *priv;

	struct ehci_hcd *ehci;



	if (!pdata) {

		dev_err(dev, "No platform data given, bailing out.\n");

		return -EINVAL;

	}



	irq = platform_get_irq(pdev, 0);

	if (irq < 0)

		return irq;



	hcd = usb_create_hcd(&ehci_mxc_hc_driver, dev, dev_name(dev));

	if (!hcd)

		return -ENOMEM;



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	hcd->regs = devm_ioremap_resource(dev, res);

	if (IS_ERR(hcd->regs)) {

		ret = PTR_ERR(hcd->regs);

		goto err_alloc;

	}

	hcd->rsrc_start = res->start;

	hcd->rsrc_len = resource_size(res);



	hcd->has_tt = 1;

	ehci = hcd_to_ehci(hcd);

	priv = (struct ehci_mxc_priv *) ehci->priv;



	/* enable clocks */

	priv->usbclk = devm_clk_get(dev, "ipg");

	if (IS_ERR(priv->usbclk)) {

		ret = PTR_ERR(priv->usbclk);

		goto err_alloc;

	}

	clk_prepare_enable(priv->usbclk);



	priv->ahbclk = devm_clk_get(dev, "ahb");

	if (IS_ERR(priv->ahbclk)) {

		ret = PTR_ERR(priv->ahbclk);

		goto err_clk_ahb;

	}

	clk_prepare_enable(priv->ahbclk);



	/* "dr" device has its own clock on i.MX51 */

	priv->phyclk = devm_clk_get(dev, "phy");

	if (IS_ERR(priv->phyclk))

		priv->phyclk = NULL;

	if (priv->phyclk)

		clk_prepare_enable(priv->phyclk);



	/* call platform specific init function */

	if (pdata->init) {

		ret = pdata->init(pdev);

		if (ret) {

			dev_err(dev, "platform init failed\n");

			goto err_init;

		}

		/* platforms need some time to settle changed IO settings */

		mdelay(10);

	}



	/* EHCI registers start at offset 0x100 */

	ehci->caps = hcd->regs + 0x100;

	ehci->regs = hcd->regs + 0x100 +

		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));



	/* set up the PORTSCx register */

	ehci_writel(ehci, pdata->portsc, &ehci->regs->port_status[0]);



	/* is this really needed? */

	msleep(10);



	/* Initialize the transceiver */

	if (pdata->otg) {

		pdata->otg->io_priv = hcd->regs + ULPI_VIEWPORT_OFFSET;

		ret = usb_phy_init(pdata->otg);

		if (ret) {

			dev_err(dev, "unable to init transceiver, probably missing\n");

			ret = -ENODEV;

			goto err_add;

		}

		ret = otg_set_vbus(pdata->otg->otg, 1);

		if (ret) {

			dev_err(dev, "unable to enable vbus on transceiver\n");

			goto err_add;

		}

	}



	platform_set_drvdata(pdev, hcd);



	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);

	if (ret)

		goto err_add;



	device_wakeup_enable(hcd->self.controller);

	return 0;



err_add:

	if (pdata && pdata->exit)

		pdata->exit(pdev);

err_init:

	if (priv->phyclk)

		clk_disable_unprepare(priv->phyclk);



	clk_disable_unprepare(priv->ahbclk);

err_clk_ahb:

	clk_disable_unprepare(priv->usbclk);

err_alloc:

	usb_put_hcd(hcd);

	return ret;

}



static int ehci_mxc_drv_remove(struct platform_device *pdev)

{

	struct mxc_usbh_platform_data *pdata = dev_get_platdata(&pdev->dev);

	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	struct ehci_hcd *ehci = hcd_to_ehci(hcd);

	struct ehci_mxc_priv *priv = (struct ehci_mxc_priv *) ehci->priv;



	usb_remove_hcd(hcd);



	if (pdata && pdata->exit)

		pdata->exit(pdev);



	if (pdata && pdata->otg)

		usb_phy_shutdown(pdata->otg);



	clk_disable_unprepare(priv->usbclk);

	clk_disable_unprepare(priv->ahbclk);



	if (priv->phyclk)

		clk_disable_unprepare(priv->phyclk);



	usb_put_hcd(hcd);

	return 0;

}



MODULE_ALIAS("platform:mxc-ehci");



static struct platform_driver ehci_mxc_driver = {

	.probe = ehci_mxc_drv_probe,

	.remove = ehci_mxc_drv_remove,

	.shutdown = usb_hcd_platform_shutdown,

	.driver = {

		   .name = "mxc-ehci",

	},

};



static int __init ehci_mxc_init(void)

{

	if (usb_disabled())

		return -ENODEV;



	pr_info("%s: " DRIVER_DESC "\n", hcd_name);



	ehci_init_driver(&ehci_mxc_hc_driver, &ehci_mxc_overrides);

	return platform_driver_register(&ehci_mxc_driver);

}

module_init(ehci_mxc_init);



static void __exit ehci_mxc_cleanup(void)

{

	platform_driver_unregister(&ehci_mxc_driver);

}

module_exit(ehci_mxc_cleanup);



MODULE_DESCRIPTION(DRIVER_DESC);

MODULE_AUTHOR("Sascha Hauer");

MODULE_LICENSE("GPL");

include/linux/platform_data/usb-ehci-mxc.h

deleted100644 → 0
+0 −14
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __INCLUDE_ASM_ARCH_MXC_EHCI_H

#define __INCLUDE_ASM_ARCH_MXC_EHCI_H



struct mxc_usbh_platform_data {

	int (*init)(struct platform_device *pdev);

	int (*exit)(struct platform_device *pdev);



	unsigned int		 portsc;

	struct usb_phy		*otg;

};



#endif /* __INCLUDE_ASM_ARCH_MXC_EHCI_H */