usb: host: remove ehci-msm.c

No Qualcomm SoC requires the "ehci-msm.c" code any more.  So remove it.
Suggested-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NAlex Elder <elder@linaro.org>
Acked-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: NAndy Gross <andy.gross@linaro.org>
Acked-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/Kconfig

@@ -222,18 +222,6 @@ config USB_EHCI_HCD_AT91
           Enables support for the on-chip EHCI controller on
           Atmel chips.
 
-config USB_EHCI_MSM
-	tristate "Support for Qualcomm QSD/MSM on-chip EHCI USB controller"
-	depends on ARCH_QCOM
-	select USB_EHCI_ROOT_HUB_TT
-	---help---
-	  Enables support for the USB Host controller present on the
-	  Qualcomm chipsets. Root Hub has inbuilt TT.
-	  This driver depends on OTG driver for PHY initialization,
-	  clock management, powering up VBUS, and power management.
-	  This driver is not supported on boards like trout which
-	  has an external PHY.
-
 config USB_EHCI_TEGRA
        tristate "NVIDIA Tegra HCD support"
        depends on ARCH_TEGRA

drivers/usb/host/Makefile

@@ -43,7 +43,6 @@ obj-$(CONFIG_USB_EHCI_HCD_SPEAR)	+= ehci-spear.o
 obj-$(CONFIG_USB_EHCI_HCD_STI)	+= ehci-st.o
 obj-$(CONFIG_USB_EHCI_EXYNOS)	+= ehci-exynos.o
 obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o
-obj-$(CONFIG_USB_EHCI_MSM)	+= ehci-msm.o
 obj-$(CONFIG_USB_EHCI_TEGRA)	+= ehci-tegra.o
 obj-$(CONFIG_USB_W90X900_EHCI)	+= ehci-w90x900.o
 

drivers/usb/host/ehci-msm.c

-/* ehci-msm.c - HSUSB Host Controller Driver Implementation
- *
- * Copyright (c) 2008-2011, Code Aurora Forum. All rights reserved.
- *
- * Partly derived from ehci-fsl.c and ehci-hcd.c
- * Copyright (c) 2000-2004 by David Brownell
- * Copyright (c) 2005 MontaVista Software
- *
- * All source code in this file is licensed under the following license except
- * where indicated.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * See the GNU General Public License for more details.
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, you can find it at http://www.fsf.org
- */
-
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/usb/otg.h>
-#include <linux/usb/msm_hsusb_hw.h>
-#include <linux/usb.h>
-#include <linux/usb/hcd.h>
-#include <linux/acpi.h>
-
-#include "ehci.h"
-
-#define MSM_USB_BASE (hcd->regs)
-
-#define DRIVER_DESC "Qualcomm On-Chip EHCI Host Controller"
-
-static const char hcd_name[] = "ehci-msm";
-static struct hc_driver __read_mostly msm_hc_driver;
-
-static int ehci_msm_reset(struct usb_hcd *hcd)
-{
-	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-	int retval;
-
-	ehci->caps = USB_CAPLENGTH;
-	hcd->has_tt = 1;
-
-	retval = ehci_setup(hcd);
-	if (retval)
-		return retval;
-
-	/* select ULPI phy and clear other status/control bits in PORTSC */
-	writel(PORTSC_PTS_ULPI, USB_PORTSC);
-	/* bursts of unspecified length. */
-	writel(0, USB_AHBBURST);
-	/* Use the AHB transactor, allow posted data writes */
-	writel(0x8, USB_AHBMODE);
-	/* Disable streaming mode and select host mode */
-	writel(0x13, USB_USBMODE);
-	/* Disable ULPI_TX_PKT_EN_CLR_FIX which is valid only for HSIC */
-	writel(readl(USB_GENCONFIG_2) & ~ULPI_TX_PKT_EN_CLR_FIX, USB_GENCONFIG_2);
-
-	return 0;
-}
-
-static int ehci_msm_probe(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd;
-	struct resource *res;
-	struct usb_phy *phy;
-	int ret;
-
-	dev_dbg(&pdev->dev, "ehci_msm proble\n");
-
-	hcd = usb_create_hcd(&msm_hc_driver, &pdev->dev, dev_name(&pdev->dev));
-	if (!hcd) {
-		dev_err(&pdev->dev, "Unable to create HCD\n");
-		return  -ENOMEM;
-	}
-
-	ret = platform_get_irq(pdev, 0);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "Unable to get IRQ resource\n");
-		goto put_hcd;
-	}
-	hcd->irq = ret;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "Unable to get memory resource\n");
-		ret = -ENODEV;
-		goto put_hcd;
-	}
-
-	hcd->rsrc_start = res->start;
-	hcd->rsrc_len = resource_size(res);
-	hcd->regs = devm_ioremap(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len);
-	if (!hcd->regs) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		ret = -ENOMEM;
-		goto put_hcd;
-	}
-
-	/*
-	 * If there is an OTG driver, let it take care of PHY initialization,
-	 * clock management, powering up VBUS, mapping of registers address
-	 * space and power management.
-	 */
-	if (pdev->dev.of_node)
-		phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
-	else
-		phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
-
-	if (IS_ERR(phy)) {
-		if (PTR_ERR(phy) == -EPROBE_DEFER) {
-			dev_err(&pdev->dev, "unable to find transceiver\n");
-			ret = -EPROBE_DEFER;
-			goto put_hcd;
-		}
-		phy = NULL;
-	}
-
-	hcd->usb_phy = phy;
-	device_init_wakeup(&pdev->dev, 1);
-
-	if (phy && phy->otg) {
-		/*
-		 * MSM OTG driver takes care of adding the HCD and
-		 * placing hardware into low power mode via runtime PM.
-		 */
-		ret = otg_set_host(phy->otg, &hcd->self);
-		if (ret < 0) {
-			dev_err(&pdev->dev, "unable to register with transceiver\n");
-			goto put_hcd;
-		}
-
-		pm_runtime_no_callbacks(&pdev->dev);
-		pm_runtime_enable(&pdev->dev);
-	} else {
-		ret = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
-		if (ret)
-			goto put_hcd;
-	}
-
-	return 0;
-
-put_hcd:
-	usb_put_hcd(hcd);
-
-	return ret;
-}
-
-static int ehci_msm_remove(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd = platform_get_drvdata(pdev);
-
-	device_init_wakeup(&pdev->dev, 0);
-	pm_runtime_disable(&pdev->dev);
-	pm_runtime_set_suspended(&pdev->dev);
-
-	if (hcd->usb_phy && hcd->usb_phy->otg)
-		otg_set_host(hcd->usb_phy->otg, NULL);
-	else
-		usb_remove_hcd(hcd);
-
-	usb_put_hcd(hcd);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int ehci_msm_pm_suspend(struct device *dev)
-{
-	struct usb_hcd *hcd = dev_get_drvdata(dev);
-	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-	bool do_wakeup = device_may_wakeup(dev);
-
-	dev_dbg(dev, "ehci-msm PM suspend\n");
-
-	/* Only call ehci_suspend if ehci_setup has been done */
-	if (ehci->sbrn)
-		return ehci_suspend(hcd, do_wakeup);
-
-	return 0;
-}
-
-static int ehci_msm_pm_resume(struct device *dev)
-{
-	struct usb_hcd *hcd = dev_get_drvdata(dev);
-	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-
-	dev_dbg(dev, "ehci-msm PM resume\n");
-
-	/* Only call ehci_resume if ehci_setup has been done */
-	if (ehci->sbrn)
-		ehci_resume(hcd, false);
-
-	return 0;
-}
-
-#else
-#define ehci_msm_pm_suspend	NULL
-#define ehci_msm_pm_resume	NULL
-#endif
-
-static const struct dev_pm_ops ehci_msm_dev_pm_ops = {
-	.suspend         = ehci_msm_pm_suspend,
-	.resume          = ehci_msm_pm_resume,
-};
-
-static const struct acpi_device_id msm_ehci_acpi_ids[] = {
-	{ "QCOM8040", 0 },
-	{ }
-};
-MODULE_DEVICE_TABLE(acpi, msm_ehci_acpi_ids);
-
-static const struct of_device_id msm_ehci_dt_match[] = {
-	{ .compatible = "qcom,ehci-host", },
-	{}
-};
-MODULE_DEVICE_TABLE(of, msm_ehci_dt_match);
-
-static struct platform_driver ehci_msm_driver = {
-	.probe	= ehci_msm_probe,
-	.remove	= ehci_msm_remove,
-	.shutdown = usb_hcd_platform_shutdown,
-	.driver = {
-		   .name = "msm_hsusb_host",
-		   .pm = &ehci_msm_dev_pm_ops,
-		   .of_match_table = msm_ehci_dt_match,
-		   .acpi_match_table = ACPI_PTR(msm_ehci_acpi_ids),
-	},
-};
-
-static const struct ehci_driver_overrides msm_overrides __initconst = {
-	.reset = ehci_msm_reset,
-};
-
-static int __init ehci_msm_init(void)
-{
-	if (usb_disabled())
-		return -ENODEV;
-
-	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
-	ehci_init_driver(&msm_hc_driver, &msm_overrides);
-	return platform_driver_register(&ehci_msm_driver);
-}
-module_init(ehci_msm_init);
-
-static void __exit ehci_msm_cleanup(void)
-{
-	platform_driver_unregister(&ehci_msm_driver);
-}
-module_exit(ehci_msm_cleanup);
-
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_ALIAS("platform:msm-ehci");
-MODULE_LICENSE("GPL");